/* ==========================================================================
   ARCHITECTURAL PORTFOLIO WEBSITE - PERFORMANCE OPTIMIZED
   Technical Drawing Aesthetic on Paper
   ========================================================================== */

/* ==========================================================================
   CSS RESET & BASE STYLES - PERFORMANCE OPTIMIZED
   ========================================================================== */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    /* PERFORMANCE: Reduce repaints */
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* ==========================================================================
   ACCESSIBILITY & UX IMPROVEMENTS
   ========================================================================== */

/* Screen reader only content */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Skip link for accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--technical-ink);
    color: var(--drawing-paper);
    padding: 8px 16px;
    text-decoration: none;
    font-family: var(--font-technical);
    font-size: var(--technical-note);
    text-transform: uppercase;
    letter-spacing: 1px;
    border-radius: 0 0 4px 4px;
    z-index: 1000;
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: 0;
}

/* Enhanced focus indicators - High contrast architectural style */
*:focus {
    outline: 3px solid var(--annotation-red);
    outline-offset: 2px;
    border-radius: 2px;
}

/* Custom focus for buttons and links */
button:focus,
a:focus,
[role="button"]:focus,
[role="tab"]:focus {
    outline: 3px solid var(--annotation-red);
    outline-offset: 2px;
    background-color: rgba(201, 74, 60, 0.1);
    transition: all 0.2s ease;
}

/* Reduced motion preferences */
@media (prefers-reduced-motion: reduce) {
    *, *::before, *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ==========================================================================
   CSS CUSTOM PROPERTIES (ARCHITECTURAL COLOR PALETTE & MEASUREMENTS)
   ========================================================================== */

:root {
    /* Architectural Drawing Color Palette */
    --drawing-paper: #FEFDFB;
    --paper-texture: #F8F7F4;
    --technical-ink: #1A1A1A;
    --blueprint-blue: #2E5984;
    --draft-blue: #4A90B8;
    --dimension-lines: #6B8DB5;
    --grid-lines: #E8E6E0;
    --annotation-red: #C94A3C;
    --construction-orange: #D17A47;
    --elevation-green: #5A7C65;
    --success-green: #4CAF50;
    
    /* Technical Typography */
    --font-technical: 'Roboto Mono', 'Courier New', monospace;
    --font-annotations: 'Source Code Pro', monospace;
    --font-body: "et-book", Georgia, serif;
    
    /* Grid System - Based on Architectural Standards */
    --grid-unit: 12px;
    --margin-width: 48px;
    --max-width: 1200px;
    --section-spacing: 96px;
    --detail-spacing: 24px;
    
    /* Technical Drawing Typography Scale */
    --title-size: 3rem;
    --section-title: 1.8rem;
    --subsection-title: 1.3rem;
    --annotation-size: 0.9rem;
    --body-text: 1.1rem;
    --technical-note: 0.85rem;
    
    /* Animation & Interaction - OPTIMIZED */
    --drawing-transition: 0.2s ease-out;
    --hover-lift: translateY(-2px);
    --gpu-transform: translate3d(0, 0, 0);
    
    /* Research Enhancement Variables */
    --research-accent: var(--blueprint-blue);
    --impact-highlight: var(--annotation-red);
    --platform-badge: var(--elevation-green);
    --metric-background: rgba(46, 89, 132, 0.08);
}

/* ==========================================================================
   BASE TYPOGRAPHY & ARCHITECTURAL PAPER BACKGROUND - PERFORMANCE OPTIMIZED
   ========================================================================== */

html {
    font-size: 16px;
    line-height: 1.6;
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    font-size: var(--body-text);
    color: var(--technical-ink);
    background: var(--drawing-paper);
    /* PERFORMANCE: Moved filter to ::after to reduce repaints */
    /* PERFORMANCE OPTIMIZED: Single base64 texture instead of multiple SVG layers */
    background-image: 
        /* Pre-rendered grid pattern as base64 - combines all the previous SVG layers */
        url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='48' height='48' viewBox='0 0 48 48'%3E%3Cg fill='none' stroke='%237A8471' stroke-width='0.5' opacity='0.12'%3E%3Cpath d='M0 24h48M24 0v48'/%3E%3Cpath d='M0 12h48M0 36h48M12 0v48M36 0v48' stroke-width='0.25' opacity='0.6'/%3E%3C/g%3E%3C/svg%3E");
    background-size: 48px 48px;
    background-position: 0 0;
    background-repeat: repeat;
    line-height: 1.6;
    position: relative;
    /* PERFORMANCE: Enhanced containment for better rendering */
    contain: layout style paint;
}

/* PERFORMANCE OPTIMIZED: Combined texture and filter overlay */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: -1;
    /* PERFORMANCE: Combined all visual effects into one layer */
    background: 
        radial-gradient(ellipse at 20% 30%, rgba(248, 245, 235, 0.4) 0%, transparent 40%);
    opacity: 0.6;
    /* REMOVED: filter and transform that break fixed positioning for tooltips */
}

/* PERFORMANCE: Optimized page reveal animation - Updated to avoid transform on body */
@keyframes revealPage {
    from {
        opacity: 0.95;
    }
    to {
        opacity: 1;
    }
}

body {
    animation: revealPage 0.8s ease-out;
    animation-fill-mode: both;
    /* Ensure no transform persists after animation */
    transform: none !important;
}

/* ==========================================================================
   ARCHITECTURAL DRAWING CONTAINER & TECHNICAL LAYOUT
   ========================================================================== */

.container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--margin-width);
    position: relative;
    /* PERFORMANCE: Contain children */
    contain: layout;
}

/* PERFORMANCE: Optimized contextual hover effect */
.contextual-hover {
    background-color: rgba(46, 89, 132, 0.06) !important;
    border-radius: 4px !important;
    transition: background-color 0.15s ease-out, border-radius 0.15s ease-out;
    transform: var(--gpu-transform);
}

/* Technical drawing border frame */
.container::before {
    content: '';
    position: absolute;
    top: calc(var(--margin-width) / 2);
    left: calc(var(--margin-width) / 2);
    right: calc(var(--margin-width) / 2);
    bottom: calc(var(--margin-width) / 2);
    border: 2px solid var(--dimension-lines);
    pointer-events: none;
    z-index: -1;
    /* PERFORMANCE: GPU acceleration */
    transform: translateZ(0);
}

/* ==========================================================================
   TECHNICAL DRAWING TYPOGRAPHY HIERARCHY
   ========================================================================== */

h1, h2, h3, h4 {
    font-family: var(--font-technical);
    font-weight: 500;
    text-transform: uppercase;
    color: var(--technical-ink);
    letter-spacing: 2px;
    position: relative;
}

/* Main title - Drawing title block style */
h1 {
    font-size: var(--title-size);
    margin-bottom: calc(var(--grid-unit) * 2);
    position: relative;
    display: inline-block;
}

h1::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--blueprint-blue) 0%, var(--draft-blue) 100%);
}

/* Section headers - Technical drawing section markers */
h2 {
    font-size: var(--section-title);
    margin-bottom: calc(var(--grid-unit) * 4);
    margin-top: calc(var(--grid-unit) * 8);
    position: relative;
    padding-left: calc(var(--grid-unit) * 3);
}

h2::before {
    content: '§';
    position: absolute;
    left: 0;
    top: 0;
    color: var(--blueprint-blue);
    font-size: 1.2em;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--dimension-lines) 0%, transparent 100%);
}

/* Subsection headers - Technical annotations */
h3 {
    font-size: var(--subsection-title);
    font-weight: 400;
    margin-bottom: calc(var(--grid-unit) * 2);
    color: var(--blueprint-blue);
    position: relative;
}

h3::before {
    content: '▸';
    margin-right: 8px;
    color: var(--annotation-red);
    font-size: 0.8em;
}

h4 {
    font-size: var(--annotation-size);
    font-weight: 400;
    margin-bottom: calc(var(--grid-unit) * 2);
    color: var(--dimension-lines);
}

p {
    margin-bottom: calc(var(--detail-spacing));
    color: var(--technical-ink);
    line-height: 1.7;
}

/* ==========================================================================
   PROFESSIONAL ARCHITECTURAL HERO TITLE BLOCK
   ========================================================================== */

/* Main title block container */
.hero-professional {
    margin: calc(var(--grid-unit) * 2) 0 calc(var(--grid-unit) * 4) 0;
    padding: calc(var(--grid-unit) * 2) 0;
    background: var(--drawing-paper);
    position: relative;
}

.title-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--grid-unit) * 3);
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 0 var(--margin-width);
    position: relative;
    align-items: start;
}

/* Technical drawing frame */
.title-block::before {
    content: '';
    position: absolute;
    top: -16px;
    left: 16px;
    right: 16px;
    bottom: -16px;
    border: 1px solid var(--technical-ink);
    background: linear-gradient(
        90deg,
        transparent 0%,
        transparent calc(100% - 1px),
        var(--technical-ink) calc(100% - 1px),
        var(--technical-ink) 100%
    );
}

/* Primary Information Panel */
.primary-panel {
    background: var(--drawing-paper);
    border: 1px solid var(--dimension-lines);
    padding: calc(var(--grid-unit) * 2);
    position: relative;
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 2);
    grid-column: 1;
}

/* Secondary Information Column */
.secondary-column {
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 2);
    grid-column: 2;
    align-self: start;
}

/* Enhanced visual hierarchy for secondary column panels */
.secondary-column .credentials-block,
.secondary-column .reference-panel {
    background: var(--paper-texture);
    border: 1px solid var(--dimension-lines);
    border-left: 3px solid var(--blueprint-blue);
    transition: all var(--drawing-transition);
}

.secondary-column .credentials-block:hover,
.secondary-column .reference-panel:hover {
    border-left-color: var(--annotation-red);
    box-shadow: 0 2px 8px rgba(46, 89, 132, 0.08);
}

/* Bottom Row Information - Full Width */
/* Floating Research Access Panel */














.panel-title {
    font-family: var(--font-technical);
    font-size: 0.85rem;
    color: var(--blueprint-blue);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}



/* Identity Header */
.identity-header {
    display: flex;
    gap: calc(var(--grid-unit) * 2);
    align-items: flex-start;
    padding-bottom: calc(var(--grid-unit) * 1.5);
    border-bottom: 1px solid var(--grid-lines);
}

.professional-headshot {
    width: 96px;
    height: 96px;
    border-radius: 4px;
    border: 2px solid var(--dimension-lines);
    object-fit: cover;
    flex-shrink: 0;
    filter: none !important;
    isolation: isolate;
    image-rendering: -webkit-optimize-contrast;
}

.title-information {
    flex: 1;
}

.researcher-name {
    font-family: var(--font-technical);
    font-size: 1.8rem;
    font-weight: 500;
    color: var(--technical-ink);
    margin: 0 0 calc(var(--grid-unit) * 0.5) 0;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.researcher-name::after {
    display: none;
}

.title-line {
    display: flex;
    flex-direction: column;
    gap: 3px;
    margin-bottom: calc(var(--grid-unit) * 1.5);
}

.position-title {
    font-family: var(--font-technical);
    font-size: 1rem;
    color: var(--blueprint-blue);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 400;
}

.degree-designation {
    font-family: var(--font-technical);
    font-size: 0.85rem;
    color: var(--annotation-red);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.institutional-affiliation {
    display: flex;
    flex-direction: column;
    gap: 1px;
}

.institution {
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--technical-ink);
    font-weight: 500;
}

.department {
    font-family: var(--font-body);
    font-size: 0.8rem;
    color: var(--dimension-lines);
}

/* Contact Links */
.contact-links {
    display: flex;
    gap: calc(var(--grid-unit) * 1);
    margin-top: calc(var(--grid-unit) * 1);
    padding-top: calc(var(--grid-unit) * 0.75);
    border-top: 1px dotted var(--grid-lines);
}

.contact-link {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 6px;
    border-radius: 3px;
    color: var(--dimension-lines);
    text-decoration: none;
    background: var(--paper-texture);
    border: 1px solid var(--grid-lines);
    transition: all var(--drawing-transition);
}

.contact-link:hover,
.contact-link:focus {
    color: var(--blueprint-blue);
    background: var(--drawing-paper);
    border-color: var(--blueprint-blue);
    box-shadow: 0 1px 3px rgba(46, 89, 132, 0.1);
    transform: translateY(-1px);
}

.contact-icon {
    width: 14px;
    height: 14px;
    fill: currentColor;
}

/* Project Description Section - Enhanced for prominence */
.project-description {
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 1.5);
    background: rgba(46, 89, 132, 0.03);
    padding: calc(var(--grid-unit) * 1.5);
    border-left: 4px solid var(--blueprint-blue);
    border-radius: 4px;
    margin: calc(var(--grid-unit) * 1.5) 0;
}

.section-divider {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-bottom: calc(var(--grid-unit) * 0.5);
    border-bottom: 1px dotted var(--dimension-lines);
    margin-bottom: calc(var(--grid-unit) * 1);
}

.section-label {
    font-family: var(--font-technical);
    font-size: 0.9rem;
    color: var(--blueprint-blue);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.section-code {
    font-family: var(--font-technical);
    font-size: 0.7rem;
    color: var(--dimension-lines);
    background: var(--paper-texture);
    padding: 2px 6px;
    border: 1px solid var(--grid-lines);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.description-content {
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 1.5);
}

.description-content p {
    font-family: var(--font-body);
    font-size: 1rem;
    color: var(--technical-ink);
    line-height: 1.7;
    margin: 0;
    font-weight: 400;
}

.description-content p:first-child {
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--blueprint-blue);
}

/* ==========================================================================
   IMPACT & APPLICATIONS SECTION - WHY IT MATTERS
   ========================================================================== */

/* Impact Applications Block */
.impact-applications-block {
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 1);
    margin-top: calc(var(--grid-unit) * 2);
    border-left: 3px solid var(--annotation-red);
    padding-left: calc(var(--grid-unit) * 1.5);
    background: linear-gradient(90deg, rgba(201, 74, 60, 0.03) 0%, transparent 40%);
}

/* Impact Preview - Always Visible Key Metrics */
.impact-preview {
    background: var(--drawing-paper);
    border: 1px solid var(--grid-lines);
    padding: calc(var(--grid-unit) * 1.5);
}

.impact-metric-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--grid-unit) * 1.5);
}

.impact-metric {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: calc(var(--grid-unit) * 1);
    border: 1px solid var(--dimension-lines);
    background: var(--paper-texture);
    position: relative;
}

.impact-metric::before {
    content: '';
    position: absolute;
    top: 6px;
    right: 6px;
    width: 8px;
    height: 8px;
    background: var(--annotation-red);
    border-radius: 50%;
    opacity: 0.6;
}

.impact-value {
    font-family: var(--font-technical);
    font-size: 1.6rem;
    font-weight: 500;
    color: var(--annotation-red);
    line-height: 1;
    margin-bottom: calc(var(--grid-unit) * 0.5);
    text-transform: uppercase;
}

.impact-label {
    font-family: var(--font-technical);
    font-size: 0.85rem;
    color: var(--technical-ink);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: calc(var(--grid-unit) * 0.25);
}

.impact-detail {
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: var(--dimension-lines);
    line-height: 1.2;
    font-style: italic;
}


/* Expandable Impact Content */
.impact-expandable-content {
    display: block; /* Always visible on desktop */
    margin-top: calc(var(--grid-unit) * 1.5);
}

.impact-applications-grid {
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 2);
    margin-bottom: calc(var(--grid-unit) * 2);
}

/* Application Entry Cards */
.application-entry {
    background: var(--drawing-paper);
    border: 1px solid var(--dimension-lines);
    padding: calc(var(--grid-unit) * 1.5);
    position: relative;
    transition: all var(--drawing-transition);
}

.application-entry:hover {
    border-color: var(--blueprint-blue);
    box-shadow: 0 2px 8px rgba(46, 89, 132, 0.1);
    transform: translateY(-1px);
}

.application-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: calc(var(--grid-unit) * 1);
    padding-bottom: calc(var(--grid-unit) * 0.5);
    border-bottom: 1px dotted var(--grid-lines);
}

.application-code {
    font-family: var(--font-technical);
    font-size: 0.75rem;
    color: var(--annotation-red);
    background: var(--paper-texture);
    padding: 2px 6px;
    border: 1px solid var(--grid-lines);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.application-title {
    font-family: var(--font-technical);
    font-size: 1rem;
    color: var(--blueprint-blue);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.application-description {
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 0.75);
}

.application-description p {
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--technical-ink);
    line-height: 1.5;
    margin: 0;
}

.application-description strong {
    color: var(--blueprint-blue);
    font-weight: 500;
}

/* Future Vision Block */
.future-vision-block {
    background: var(--paper-texture);
    border: 1px solid var(--dimension-lines);
    padding: calc(var(--grid-unit) * 1.5);
    margin-top: calc(var(--grid-unit) * 1);
}

.vision-separator {
    display: flex;
    align-items: center;
    gap: calc(var(--grid-unit) * 1);
    margin-bottom: calc(var(--grid-unit) * 1.5);
    padding: calc(var(--grid-unit) * 0.5) 0;
}

.vision-content {
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 1);
}

.vision-content p {
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--technical-ink);
    line-height: 1.6;
    margin: 0;
}

.vision-content strong {
    color: var(--elevation-green);
    font-weight: 500;
}

/* Credentials Block */
.credentials-block {
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 1);
}

.credentials-grid {
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 1);
}

.credential-item {
    background: var(--paper-texture);
    padding: calc(var(--grid-unit) * 1.5);
    border: 1px solid var(--grid-lines);
    display: grid;
    grid-template-columns: 1fr auto auto;
    grid-template-rows: auto auto;
    gap: 4px 12px;
    align-items: start;
}

.credential-degree {
    font-family: var(--font-technical);
    font-size: 0.9rem;
    color: var(--technical-ink);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
    grid-column: 1;
    grid-row: 1;
}

.credential-institution {
    font-family: var(--font-body);
    font-size: 0.8rem;
    color: var(--blueprint-blue);
    grid-column: 2;
    grid-row: 1;
}

.credential-year {
    font-family: var(--font-technical);
    font-size: 0.8rem;
    color: var(--annotation-red);
    font-weight: 500;
    grid-column: 3;
    grid-row: 1;
}

.credential-focus {
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: var(--dimension-lines);
    line-height: 1.3;
    grid-column: 1 / -1;
    grid-row: 2;
    font-style: italic;
}

.credential-separator {
    height: 1px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        var(--grid-lines) 20%,
        var(--grid-lines) 80%,
        transparent 100%
    );
    margin: calc(var(--grid-unit) * 0.5) 0;
}

/* Technical Specifications Panel */
.specifications-panel,
.reference-panel {
    background: var(--paper-texture);
    border: 1px solid var(--dimension-lines);
    padding: calc(var(--grid-unit) * 1.5);
    position: relative;
}

/* Hide mobile-specific elements on desktop */
.spec-preview,
.spec-toggle,
.ref-toggle {
    display: none;
}

.panel-title {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: calc(var(--grid-unit) * 1.5);
    padding-bottom: calc(var(--grid-unit) * 0.75);
    border-bottom: 1px solid var(--dimension-lines);
}

.spec-label {
    font-family: var(--font-technical);
    font-size: 0.95rem;
    color: var(--blueprint-blue);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.drawing-number {
    font-family: var(--font-technical);
    font-size: 0.75rem;
    color: var(--dimension-lines);
    background: var(--drawing-paper);
    padding: 2px 6px;
    border: 1px solid var(--dimension-lines);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Specification entries */
.specification-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--grid-unit) * 1.5);
}

.spec-entry {
    padding: calc(var(--grid-unit) * 1);
    border: 1px solid var(--grid-lines);
    background: var(--drawing-paper);
    position: relative;
}

.spec-value {
    font-family: var(--font-technical);
    font-size: 1.4rem;
    font-weight: 500;
    color: var(--annotation-red);
    margin-bottom: 3px;
    text-transform: uppercase;
}

.spec-description {
    font-family: var(--font-technical);
    font-size: 0.8rem;
    color: var(--technical-ink);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 2px;
}

.spec-detail {
    font-family: var(--font-body);
    font-size: 0.75rem;
    color: var(--dimension-lines);
    line-height: 1.3;
}

/* Specification Separator */
.spec-separator {
    grid-column: 1 / -1;
    display: flex;
    align-items: center;
    gap: calc(var(--grid-unit) * 1);
    margin: calc(var(--grid-unit) * 1.5) 0;
    padding: calc(var(--grid-unit) * 0.5) 0;
}

.separator-line {
    flex: 1;
    height: 1px;
    background: var(--grid-lines);
    position: relative;
}

.separator-line::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, var(--dimension-lines) 0%, transparent 15%, transparent 85%, var(--dimension-lines) 100%);
    transform: translateY(-50%);
}

.separator-label {
    font-family: var(--font-technical);
    font-size: 0.7rem;
    color: var(--blueprint-blue);
    text-transform: uppercase;
    letter-spacing: 1px;
    padding: 0 calc(var(--grid-unit) * 0.5);
    background: var(--drawing-paper);
    white-space: nowrap;
}

/* Reference Panel */
.research-domains {
    margin-bottom: calc(var(--grid-unit) * 1.5);
}

.domain-entry {
    font-family: var(--font-technical);
    font-size: 0.8rem;
    color: var(--blueprint-blue);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 4px 0;
    border-bottom: 1px dotted var(--grid-lines);
    margin-bottom: 4px;
}

.domain-entry::before {
    content: '→';
    color: var(--annotation-red);
    margin-right: 8px;
    font-weight: bold;
}

/* Technical Links */
.access-links {
    margin-bottom: calc(var(--grid-unit) * 1.5);
}

.technical-link {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: calc(var(--grid-unit) * 0.75);
    margin-bottom: calc(var(--grid-unit) * 0.75);
    border: 1px solid var(--dimension-lines);
    background: var(--drawing-paper);
    text-decoration: none;
    transition: all var(--drawing-transition);
}

.technical-link:hover {
    background: var(--blueprint-blue);
    border-color: var(--blueprint-blue);
}

.technical-link:hover .link-label {
    color: var(--drawing-paper);
}

.technical-link:hover .link-code {
    color: var(--drawing-paper);
}

.link-label {
    font-family: var(--font-technical);
    font-size: 0.8rem;
    color: var(--technical-ink);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.link-code {
    font-family: var(--font-technical);
    font-size: 0.75rem;
    color: var(--annotation-red);
    font-weight: 500;
}

/* Contact Reference */
.contact-reference {
    border-top: 1px solid var(--grid-lines);
    padding-top: calc(var(--grid-unit) * 0.75);
}

.contact-entry {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 4px 0;
}

.contact-type {
    font-family: var(--font-technical);
    font-size: 0.7rem;
    color: var(--dimension-lines);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    min-width: 60px;
}

.contact-value {
    font-family: var(--font-technical);
    font-size: 0.8rem;
    color: var(--blueprint-blue);
    text-decoration: none;
    transition: color var(--drawing-transition);
    display: flex;
    align-items: center;
    gap: 6px;
}

.contact-value:hover {
    color: var(--annotation-red);
}

.contact-icon {
    width: 14px;
    height: 14px;
    fill: currentColor;
    transition: fill var(--drawing-transition);
}

/* Responsive Design */
@media (max-width: 1200px) {
    .title-block {
        grid-template-columns: 1fr 1fr;
        gap: calc(var(--grid-unit) * 2.5);
    }
}

@media (max-width: 1024px) {
    .title-block {
        grid-template-columns: 1fr;
        gap: calc(var(--grid-unit) * 2);
    }
    
    .primary-panel {
        grid-column: 1;
        margin-bottom: calc(var(--grid-unit) * 1);
    }
    
    .secondary-column {
        grid-column: 1;
        flex-direction: row;
        gap: calc(var(--grid-unit) * 2);
    }
    
    .secondary-column > * {
        flex: 1;
    }
}

@media (max-width: 768px) {
    .title-block {
        display: block; /* DISABLE GRID - use simple block layout */
        grid-template-columns: none;
        gap: 0;
    }
    
    .secondary-column {
        flex-direction: column;
        gap: calc(var(--grid-unit) * 1.5);
    }
    
    .project-description {
        order: -1; /* Move mission statement to top on mobile */
        margin-top: calc(var(--grid-unit) * 1);
        margin-bottom: calc(var(--grid-unit) * 2);
    }
    
    .identity-header {
        flex-direction: column;
        text-align: center;
        align-items: center;
    }
    
    .contact-links {
        justify-content: center;
        gap: calc(var(--grid-unit) * 0.75);
        margin-top: calc(var(--grid-unit) * 0.75);
        padding-top: calc(var(--grid-unit) * 0.5);
    }
    
    .contact-link {
        padding: 8px;
        min-width: 32px;
        min-height: 32px;
    }
    
    .professional-headshot {
        align-self: center;
    }
    
    .specification-grid {
        grid-template-columns: 1fr;
    }
    
    .researcher-name {
        font-size: 1.8rem;
    }
    
    .credential-item {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto auto;
        gap: 4px;
        text-align: center;
    }
    
    .credential-degree,
    .credential-institution,
    .credential-year,
    .credential-focus {
        grid-column: 1;
    }
    
    .credential-degree { grid-row: 1; }
    .credential-institution { grid-row: 2; }
    .credential-year { grid-row: 3; }
    .credential-focus { grid-row: 4; }
    
    /* Mobile-specific progressive disclosure */
    .mobile-disclosure {
        display: block;
    }
    
    .spec-accordion {
        border: 1px solid var(--grid-lines);
        margin-bottom: calc(var(--grid-unit) * 0.5);
        background: var(--drawing-paper);
        overflow: hidden; /* Ensure content doesn't overflow */
    }
    
    .spec-accordion-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: calc(var(--grid-unit) * 1);
        cursor: pointer;
        background: var(--paper-texture);
        border-bottom: 1px solid var(--grid-lines);
        transition: background-color 0.2s ease;
    }
    
    .spec-accordion-header:hover {
        background: var(--dimension-lines);
        background-opacity: 0.1;
    }
    
    .spec-accordion-title {
        font-family: var(--font-technical);
        font-size: 0.9rem;
        color: var(--blueprint-blue);
        text-transform: uppercase;
        letter-spacing: 0.5px;
        font-weight: 500;
    }
    
    .spec-accordion-indicator {
        font-family: var(--font-technical);
        font-size: 0.8rem;
        color: var(--annotation-red);
        transition: transform 0.3s ease;
    }
    
    .spec-accordion-content {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease-out;
    }
    
    .spec-accordion.expanded .spec-accordion-content {
        max-height: 200px; /* Reduced from 500px to prevent massive space */
    }
    
    .spec-accordion.expanded .spec-accordion-indicator {
        transform: rotate(180deg);
    }
    
    .spec-accordion-inner {
        padding: calc(var(--grid-unit) * 0.75); /* Reduced padding for mobile */
        max-height: 150px; /* Additional safeguard against excessive height */
        overflow-y: auto; /* Allow scrolling if content is too large */
    }
    
    /* Compact metrics display for mobile */
    .mobile-metrics-grid {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: calc(var(--grid-unit) * 0.5);
        margin-bottom: calc(var(--grid-unit) * 1);
    }
    
    .mobile-metric-card {
        background: var(--drawing-paper);
        border: 1px solid var(--grid-lines);
        padding: calc(var(--grid-unit) * 0.75);
        text-align: center;
    }
    
    .mobile-metric-value {
        font-family: var(--font-technical);
        font-size: 1rem;
        font-weight: 500;
        color: var(--annotation-red);
        margin-bottom: 2px;
    }
    
    .mobile-metric-label {
        font-family: var(--font-technical);
        font-size: 0.7rem;
        color: var(--technical-ink);
        text-transform: uppercase;
    }
    
    /* Mobile Navigation Styles */
    .mobile-nav-toggle {
        display: flex;
    }
    
    .header-top {
        display: none; /* Hide header-top completely on mobile to eliminate empty space */
    }
    
    .navigation {
        position: fixed;
        top: 0;
        left: -100%;
        width: 280px;
        height: 100vh;
        background: var(--drawing-paper);
        border-right: 2px solid var(--blueprint-blue);
        padding: calc(var(--grid-unit) * 4) calc(var(--grid-unit) * 2);
        transition: left 0.3s ease;
        z-index: 1000;
        flex-direction: column;
        gap: calc(var(--grid-unit) * 1.5);
        align-items: flex-start;
        box-shadow: 2px 0 12px rgba(0,0,0,0.1);
    }
    
    .navigation.mobile-nav-open {
        left: 0;
    }
    
    .navigation a {
        font-size: 1.1rem;
        padding: calc(var(--grid-unit) * 0.75) 0;
        border-bottom: none;
        border-left: 3px solid transparent;
        padding-left: calc(var(--grid-unit) * 1);
        width: 100%;
        transition: all 0.3s ease;
    }
    
    .navigation a:hover,
    .navigation a.active {
        border-left-color: var(--blueprint-blue);
        background: rgba(46, 89, 132, 0.05);
        transform: translateX(8px);
    }
    
    /* Mobile Navigation Overlay */
    .mobile-nav-overlay {
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100vh;
        background: rgba(0, 0, 0, 0.5);
        opacity: 0;
        visibility: hidden;
        pointer-events: none;
        transition: all 0.3s ease;
        z-index: 999;
    }
    
    .mobile-nav-overlay.visible {
        opacity: 1;
        visibility: visible;
        pointer-events: auto;
        letter-spacing: 0.5px;
    }
    
    /* Mobile Space Optimization - Reduce margins, paddings, and simplify borders */
    .container {
        padding: 0 calc(var(--grid-unit) * 0.75); /* Minimal side padding */
    }
    
    .container::before {
        display: none !important; /* FORCE HIDE container border frame */
    }
    
    .header {
        display: block;
        margin: 0;
        padding: 0;
        border: none;
    }
    
    /* Keep header-top hidden - it causes the massive space issue */
    .header-top {
        display: none !important;
    }
    
    /* Remove all header pseudo-elements */
    .header::before,
    .header::after {
        display: none !important;
    }
    
    /* Fix mobile-disclosure with proper constraints */
    .mobile-disclosure {
        display: block;
        margin: calc(var(--grid-unit) * 0.5) 0;
        padding: calc(var(--grid-unit) * 0.25);
        max-height: 200px; /* CRITICAL: Prevent massive height */
        overflow: hidden; /* Prevent content overflow */
    }
    
    /* Test reference-panel */
    .reference-panel {
        display: block;
        margin: calc(var(--grid-unit) * 0.5) 0;
        padding: calc(var(--grid-unit) * 0.25);
        border: 1px solid var(--grid-lines);
    }
    
    /* Test specifications-panel */
    .specifications-panel {
        display: block;
        margin: calc(var(--grid-unit) * 0.5) 0;
        padding: calc(var(--grid-unit) * 0.25);
        border: 1px solid var(--grid-lines);
    }
    
    /* Allow basic hero content but with minimal spacing */
    .hero-professional {
        display: block;
        margin: 0;
        padding: 0; /* Remove padding that might cause gap */
    }
    
    .title-block {
        display: block; /* NO GRID */
        margin: 0;
        padding: 0;
        border: none;
    }
    
    .primary-panel {
        display: block;
        margin: 0;
        padding: calc(var(--grid-unit) * 0.25); /* Minimal padding */
        border: 1px solid var(--grid-lines);
    }
    
    .identity-header {
        display: block;
        margin: 0; /* Remove margin that might cause gap */
        padding-top: 0; /* Ensure no top padding */
    }
    
    /* Add back project-description to test */
    .project-description {
        display: block;
        margin: calc(var(--grid-unit) * 0.5) 0;
        padding: calc(var(--grid-unit) * 0.5);
    }
    
    /* Add back credentials-block to test */
    .credentials-block {
        display: block;
        margin: calc(var(--grid-unit) * 0.5) 0;
        padding: calc(var(--grid-unit) * 0.25);
    }
    
    /* Fix hero-professional mobile spacing - MINIMAL */
    .hero-professional {
        margin: 0;
        padding: calc(var(--grid-unit) * 0.5) 0;
    }
    
    .title-block {
        gap: 0; /* NO gap */
        border: none; /* Remove border */
        padding: calc(var(--grid-unit) * 0.25); /* ULTRA minimal padding */
        min-height: auto; /* No forced height */
    }
    
    .title-block::before {
        display: none; /* Remove title-block decorative border on mobile */
    }
    
    .primary-panel {
        padding: calc(var(--grid-unit) * 0.25); /* ULTRA minimal padding */
        border: none; /* Remove border */
        margin-bottom: 0; /* NO margin */
    }
    
    .identity-header {
        margin-bottom: calc(var(--grid-unit) * 0.5); /* MINIMAL spacing */
    }
    
    .project-description {
        margin: calc(var(--grid-unit) * 1) 0; /* Reduced margins */
    }
    
    .credentials-block {
        margin-top: calc(var(--grid-unit) * 2); /* Reduced from * 6 */
    }
    
    .credentials-grid {
        gap: calc(var(--grid-unit) * 1); /* Reduced gap */
    }
    

    
    /* Impact cards on mobile */
    .secondary-column {
        margin-top: calc(var(--grid-unit) * 1.5);
        padding: calc(var(--grid-unit) * 1);
        background: var(--paper-texture);
        border: 1px solid var(--grid-lines);
        border-radius: 4px;
    }
    
    .secondary-column .impact-cards-container {
        grid-template-columns: 1fr;
        gap: calc(var(--grid-unit) * 1);
    }
    
    .impact-card {
        height: 140px;
    }
    
    /* Mobile Education Dropdown */
    .mobile-education-toggle {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: calc(var(--grid-unit) * 0.75);
        background: var(--paper-texture);
        border: 1px solid var(--grid-lines);
        cursor: pointer;
        margin-top: calc(var(--grid-unit) * 0.5);
        transition: all 0.2s ease;
    }
    
    .mobile-education-toggle:hover {
        background: var(--dimension-lines);
        background-opacity: 0.1;
    }
    
    .education-toggle-text {
        font-family: var(--font-technical);
        font-size: 0.9rem;
        color: var(--blueprint-blue);
        text-transform: uppercase;
        letter-spacing: 0.5px;
        font-weight: 500;
    }
    
    .education-toggle-indicator {
        font-family: var(--font-technical);
        font-size: 0.8rem;
        color: var(--annotation-red);
        transition: transform 0.3s ease;
    }
    
    .mobile-education-toggle[aria-expanded="true"] .education-toggle-indicator {
        transform: rotate(180deg);
    }
    
    .secondary-education {
        display: none; /* Hidden by default on mobile */
        margin-top: calc(var(--grid-unit) * 0.5);
    }
    
    .secondary-education.expanded {
        display: block;
        animation: slideDown 0.3s ease-out;
    }
    
    @keyframes slideDown {
        from {
            opacity: 0;
            transform: translateY(-10px);
        }
        to {
            opacity: 1;
            transform: translateY(0);
        }
    }
    
    
    .specification-grid {
        gap: calc(var(--grid-unit) * 0.75); /* Tighter grid spacing */
    }
    
    .spec-entry {
        padding: calc(var(--grid-unit) * 0.75); /* Reduced entry padding */
        border: none; /* Remove individual borders on mobile */
        border-bottom: 1px solid var(--grid-lines); /* Only bottom border */
    }
    
    .spec-entry:last-child {
        border-bottom: none; /* Remove last border */
    }
    
    /* Simplified section spacing */
    .section {
        margin-bottom: calc(var(--grid-unit) * 2); /* Reduced from larger spacing */
        padding-top: calc(var(--grid-unit) * 1.5); /* Reduced padding */
    }
    
    .section::before {
        display: none; /* Remove side elevation markers on mobile */
    }
    
    /* Optimize mobile sheet container */
    .mobile-sheet-container {
        margin-top: calc(var(--grid-unit) * 1); /* Reduced top margin */
    }
    
    .mobile-sheet {
        padding: calc(var(--grid-unit) * 1.5); /* Reduced sheet padding */
    }
    
    .mobile-sheet-header {
        margin-bottom: calc(var(--grid-unit) * 1); /* Reduced header margin */
    }
    
    /* Hide potentially problematic panels on mobile */
    /* Specifications Panel - Mobile Accordion Version */
    .specifications-panel {
        display: block;
        margin: calc(var(--grid-unit) * 0.5) 0;
        padding: 0;
        border: 1px solid var(--grid-lines);
        background: var(--drawing-paper);
    }
    
    .specifications-panel .panel-title {
        padding: calc(var(--grid-unit) * 1);
        background: var(--paper-texture);
        border-bottom: 1px solid var(--grid-lines);
        margin: 0;
    }
    
    /* Show mobile-specific elements */
    .spec-preview,
    .spec-toggle,
    .ref-toggle {
        display: flex;
    }
    
    /* Impact & Applications - Mobile Accordion Version */
    .impact-applications-block {
        margin: calc(var(--grid-unit) * 0.5) 0;
        padding: 0;
        border-left: none;
        background: none;
        border: 1px solid var(--annotation-red);
    }
    
    .impact-applications-block .section-divider {
        padding: calc(var(--grid-unit) * 1);
        background: var(--paper-texture);
        border-bottom: 1px solid var(--grid-lines);
        margin: 0;
    }
    
    .impact-applications-block .impact-preview {
        padding: calc(var(--grid-unit) * 1);
        border: none;
        border-bottom: 1px solid var(--grid-lines);
        background: var(--drawing-paper);
    }
    
    .impact-metric-grid {
        grid-template-columns: 1fr 1fr;
        gap: calc(var(--grid-unit) * 0.75);
    }
    
    .impact-metric {
        padding: calc(var(--grid-unit) * 0.75);
    }
    
    .impact-value {
        font-size: 1.3rem;
    }
    
    .impact-label {
        font-size: 0.75rem;
    }
    
    .impact-detail {
        font-size: 0.7rem;
    }
    
    /* Mobile accordion for impact details */
    .impact-expandable-content {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease-out;
        display: none;
    }
    
    .impact-applications-block.expanded .impact-expandable-content {
        max-height: 600px;
        display: block;
        padding: calc(var(--grid-unit) * 1);
    }
    
    .impact-applications-block.expanded .impact-toggle-indicator {
        transform: rotate(180deg);
    }
    
    .impact-applications-grid {
        gap: calc(var(--grid-unit) * 1.5);
        margin-bottom: calc(var(--grid-unit) * 1);
    }
    
    .application-entry {
        padding: calc(var(--grid-unit) * 1);
        border: none;
        border-bottom: 1px solid var(--grid-lines);
        border-radius: 0;
    }
    
    .application-entry:last-child {
        border-bottom: none;
    }
    
    .application-header {
        margin-bottom: calc(var(--grid-unit) * 0.75);
        padding-bottom: calc(var(--grid-unit) * 0.5);
    }
    
    .application-title {
        font-size: 0.9rem;
    }
    
    .application-description {
        gap: calc(var(--grid-unit) * 0.5);
    }
    
    .application-description p {
        font-size: 0.85rem;
        line-height: 1.4;
    }
    
    .future-vision-block {
        padding: calc(var(--grid-unit) * 1);
        margin-top: calc(var(--grid-unit) * 0.5);
        border: none;
        border-top: 1px solid var(--grid-lines);
    }
    
    .vision-separator {
        margin-bottom: calc(var(--grid-unit) * 1);
    }
    
    .vision-content {
        gap: calc(var(--grid-unit) * 0.75);
    }
    
    .vision-content p {
        font-size: 0.85rem;
        line-height: 1.4;
    }
    
    /* Mobile compact specifications preview */
    .specifications-panel .spec-preview {
        padding: calc(var(--grid-unit) * 1);
        border-bottom: 1px solid var(--grid-lines);
        background: var(--drawing-paper);
    }
    
    .preview-metrics {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: calc(var(--grid-unit) * 1);
    }
    
    .preview-metric {
        display: flex;
        flex-direction: column;
        align-items: center;
        text-align: center;
        padding: calc(var(--grid-unit) * 0.75);
        border: 1px solid var(--grid-lines);
        background: var(--paper-texture);
    }
    
    .preview-value {
        font-family: var(--font-technical);
        font-size: 1.5rem;
        font-weight: 500;
        color: var(--blueprint-blue);
        line-height: 1;
        margin-bottom: calc(var(--grid-unit) * 0.25);
    }
    
    .preview-label {
        font-family: var(--font-technical);
        font-size: 0.75rem;
        color: var(--technical-ink);
        text-transform: uppercase;
        letter-spacing: 0.5px;
        line-height: 1.2;
    }
    
    .specifications-panel .specification-grid {
        display: none;
    }
    
    /* Mobile accordion for full specifications */
    .specifications-panel .spec-toggle {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: calc(var(--grid-unit) * 1);
        cursor: pointer;
        background: var(--paper-texture);
        border-bottom: 1px solid var(--grid-lines);
        transition: background-color 0.2s ease;
    }
    
    .specifications-panel .spec-toggle:hover {
        background: rgba(107, 141, 181, 0.1);
    }
    
    .specifications-panel .spec-toggle-text {
        font-family: var(--font-technical);
        font-size: 0.9rem;
        color: var(--blueprint-blue);
        text-transform: uppercase;
        letter-spacing: 0.5px;
        font-weight: 500;
    }
    
    .specifications-panel .spec-toggle-indicator {
        font-family: var(--font-technical);
        font-size: 0.8rem;
        color: var(--annotation-red);
        transition: transform 0.3s ease;
    }
    
    .specifications-panel .spec-expandable-content {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease-out;
    }
    
    .specifications-panel.expanded .spec-expandable-content {
        max-height: 400px;
    }
    
    .specifications-panel.expanded .spec-toggle-indicator {
        transform: rotate(180deg);
    }
    
    .specifications-panel.expanded .specification-grid {
        display: block;
        padding: calc(var(--grid-unit) * 1);
    }
    
    /* Reference Panel - Mobile Accordion Version */
    .reference-panel {
        display: block;
        margin: calc(var(--grid-unit) * 0.5) 0;
        padding: 0;
        border: 1px solid var(--grid-lines);
        background: var(--drawing-paper);
    }
    
    .reference-panel .panel-title {
        padding: calc(var(--grid-unit) * 1);
        background: var(--paper-texture);
        border-bottom: 1px solid var(--grid-lines);
        margin: 0;
    }
    
    /* Always visible action links */
    .reference-panel .access-links {
        display: block;
        padding: calc(var(--grid-unit) * 1);
        border-bottom: 1px solid var(--grid-lines);
        background: var(--drawing-paper);
    }
    
    /* Hidden by default on mobile */
    .reference-panel .research-domains,
    .reference-panel .contact-reference {
        display: none;
    }
    
    /* Mobile accordion for additional details */
    .reference-panel .ref-toggle {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: calc(var(--grid-unit) * 1);
        cursor: pointer;
        background: var(--paper-texture);
        transition: background-color 0.2s ease;
    }
    
    .reference-panel .ref-toggle:hover {
        background: rgba(107, 141, 181, 0.1);
    }
    
    .reference-panel .ref-toggle-text {
        font-family: var(--font-technical);
        font-size: 0.9rem;
        color: var(--blueprint-blue);
        text-transform: uppercase;
        letter-spacing: 0.5px;
        font-weight: 500;
    }
    
    .reference-panel .ref-toggle-indicator {
        font-family: var(--font-technical);
        font-size: 0.8rem;
        color: var(--annotation-red);
        transition: transform 0.3s ease;
    }
    
    .reference-panel .ref-expandable-content {
        max-height: 0;
        overflow: hidden;
        transition: max-height 0.3s ease-out;
    }
    
    .reference-panel.expanded .ref-expandable-content {
        max-height: 300px;
    }
    
    .reference-panel.expanded .ref-toggle-indicator {
        transform: rotate(180deg);
    }
    
    .reference-panel.expanded .research-domains,
    .reference-panel.expanded .contact-reference {
        display: block;
        padding: calc(var(--grid-unit) * 1);
    }
    
    .mobile-disclosure {
        display: none !important;
    }
    
    /* Mobile Sheet Navigation System */
    .mobile-sheet-container {
        display: none !important; /* Keep hidden - controlled by JavaScript when needed */
        position: relative;
        overflow: hidden;
        margin-top: calc(var(--grid-unit) * 2);
    }
    
    .mobile-sheet-wrapper {
        display: flex;
        transition: transform 0.3s ease-out;
        touch-action: pan-x;
    }
    
    .mobile-sheet {
        min-width: 100%;
        flex-shrink: 0;
        padding: calc(var(--grid-unit) * 1);
        background: var(--drawing-paper);
        border: 1px solid var(--grid-lines);
        margin-right: calc(var(--grid-unit) * 0.5);
    }
    
    .mobile-sheet-header {
        display: flex;
        justify-content: space-between;
        align-items: center;
        margin-bottom: calc(var(--grid-unit) * 1);
        padding-bottom: calc(var(--grid-unit) * 0.5);
        border-bottom: 1px solid var(--grid-lines);
    }
    
    .mobile-sheet-title {
        font-family: var(--font-technical);
        font-size: 1.1rem;
        color: var(--blueprint-blue);
        text-transform: uppercase;
        letter-spacing: 0.5px;
        font-weight: 500;
    }
    
    .mobile-sheet-number {
        font-family: var(--font-technical);
        font-size: 0.8rem;
        color: var(--annotation-red);
        text-transform: uppercase;
    }
    
    .mobile-sheet-nav {
        display: flex;
        justify-content: center;
        gap: calc(var(--grid-unit) * 0.5);
        margin-top: calc(var(--grid-unit) * 1);
        padding: calc(var(--grid-unit) * 1) 0;
    }
    
    .mobile-sheet-dot {
        width: 8px;
        height: 8px;
        border-radius: 50%;
        background: var(--grid-lines);
        transition: all 0.3s ease;
        cursor: pointer;
    }
    
    .mobile-sheet-dot.active {
        background: var(--annotation-red);
        transform: scale(1.2);
    }
    
    .mobile-sheet-swipe-hint {
        text-align: center;
        font-family: var(--font-technical);
        font-size: 0.7rem;
        color: var(--dimension-lines);
        margin-top: calc(var(--grid-unit) * 0.5);
        text-transform: uppercase;
        letter-spacing: 0.5px;
    }
    
    /* Hide desktop sections on mobile */
    main .section {
        display: none;
    }
}


/* ==========================================================================
   ARCHITECTURAL PUBLICATIONS SECTION
   ========================================================================== */

/* Publications Professional Layout */
.publications-professional {
    margin: calc(var(--grid-unit) * 6) 0;
    background: var(--drawing-paper);
    position: relative;
}

/* Publications Title Block */
.publications-title-block {
    display: grid;
    grid-template-columns: 1fr;
    gap: calc(var(--grid-unit) * 4);
    margin-bottom: calc(var(--grid-unit) * 4);
    padding: calc(var(--grid-unit) * 3);
    border: 1px solid var(--technical-ink);
    background: var(--drawing-paper);
    position: relative;
}

.publications-header {
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 2);
}

.section-title {
    font-family: var(--font-technical);
    font-size: 2rem;
    color: var(--technical-ink);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin: 0;
}

.section-title::before {
    content: '§';
    margin-right: 12px;
    color: var(--blueprint-blue);
}

.publications-summary {
    display: flex;
    gap: calc(var(--grid-unit) * 2);
}

.summary-stat {
    font-family: var(--font-technical);
    font-size: 0.9rem;
    color: var(--annotation-red);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 4px 8px;
    border: 1px solid var(--grid-lines);
    background: var(--paper-texture);
}

/* Controls Panel */
.controls-panel {
    background: var(--paper-texture);
    border: 1px solid var(--dimension-lines);
    padding: calc(var(--grid-unit) * 2);
}

.domain-controls {
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 0.75);
}

.domain-filter {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: calc(var(--grid-unit) * 1);
    align-items: center;
    padding: calc(var(--grid-unit) * 1);
    border: 1px solid var(--grid-lines);
    background: var(--drawing-paper);
    cursor: pointer;
    transition: all var(--drawing-transition);
    font-family: var(--font-technical);
}

.domain-filter:hover,
.domain-filter.active {
    background: var(--blueprint-blue);
    border-color: var(--blueprint-blue);
}

.domain-filter:hover .filter-code,
.domain-filter:hover .filter-label,
.domain-filter:hover .filter-count,
.domain-filter.active .filter-code,
.domain-filter.active .filter-label,
.domain-filter.active .filter-count {
    color: var(--drawing-paper);
}

.filter-code {
    font-size: 0.8rem;
    color: var(--annotation-red);
    font-weight: 500;
    text-transform: uppercase;
}

.filter-label {
    font-size: 0.8rem;
    color: var(--technical-ink);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-count {
    font-size: 0.7rem;
    color: var(--dimension-lines);
}

/* Publications Drawing Sheet */
.publications-drawing-sheet {
    background: var(--drawing-paper);
    border: 1px solid var(--dimension-lines);
    margin-top: calc(var(--grid-unit) * 2);
    position: relative;
}

/* Animations for compact publications */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Hidden publication data (used by JavaScript for filtering) */
.publications-data {
    display: none !important;
}


/* Impact Metrics Row */
.impact-metrics-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--grid-unit) * 1);
    margin-bottom: calc(var(--grid-unit) * 1.5);
    padding-bottom: calc(var(--grid-unit) * 1);
    border-bottom: 1px dotted var(--grid-lines);
}

.impact-metric-small {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: calc(var(--grid-unit) * 0.75);
    border: 1px solid var(--grid-lines);
    background: var(--paper-texture);
}

.impact-metric-small .metric-value {
    font-family: var(--font-technical);
    font-size: 1.2rem;
    font-weight: 500;
    color: var(--blueprint-blue);
    line-height: 1;
    margin-bottom: calc(var(--grid-unit) * 0.25);
    text-transform: uppercase;
}

.impact-metric-small .metric-label {
    font-family: var(--font-technical);
    font-size: 0.7rem;
    color: var(--technical-ink);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1.2;
}

/* Impact Explanation */
.impact-explanation {
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 1);
}

.impact-explanation p {
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: var(--technical-ink);
    line-height: 1.5;
    margin: 0;
}

.impact-explanation strong {
    color: var(--blueprint-blue);
    font-weight: 500;
}

/* Mobile Responsive for Publication Impact */
@media (max-width: 768px) {
    .pub-impact-toggle {
        padding: calc(var(--grid-unit) * 0.5);
        margin-top: calc(var(--grid-unit) * 0.75);
    }
    
    .pub-impact-label {
        font-size: 0.75rem;
    }
    
    .pub-impact-content.expanded {
        padding: calc(var(--grid-unit) * 1);
    }
    
    .impact-metrics-row {
        gap: calc(var(--grid-unit) * 0.75);
        margin-bottom: calc(var(--grid-unit) * 1);
    }
    
    .impact-metric-small {
        padding: calc(var(--grid-unit) * 0.5);
    }
    
    .impact-metric-small .metric-value {
        font-size: 1rem;
    }
    
    .impact-metric-small .metric-label {
        font-size: 0.65rem;
    }
    
    .impact-explanation p {
        font-size: 0.8rem;
        line-height: 1.4;
    }
}


/* Platform Impact Section */
.platform-impact-section {
    margin-top: calc(var(--grid-unit) * 2);
    border-top: 2px solid var(--elevation-green);
    background: linear-gradient(180deg, rgba(90, 124, 101, 0.03) 0%, transparent 40%);
}

.platform-impact-toggle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: calc(var(--grid-unit) * 1);
    background: var(--elevation-green);
    color: var(--drawing-paper);
    cursor: pointer;
    transition: all 0.2s ease;
}

.platform-impact-toggle:hover {
    background: var(--technical-ink);
}

.platform-impact-label {
    font-family: var(--font-technical);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.platform-impact-indicator {
    font-family: var(--font-technical);
    font-size: 0.8rem;
    transition: transform 0.3s ease;
}

.platform-impact-toggle[aria-expanded="true"] .platform-impact-indicator {
    transform: rotate(180deg);
}

/* Platform Impact Content */
.platform-impact-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease-out;
    background: var(--drawing-paper);
}

.platform-impact-content.expanded {
    max-height: 600px;
    padding: calc(var(--grid-unit) * 2);
}

/* Use Case Grid */
.use-case-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--grid-unit) * 1.5);
    margin-bottom: calc(var(--grid-unit) * 2);
}

.use-case-entry {
    background: var(--paper-texture);
    border: 1px solid var(--grid-lines);
    padding: calc(var(--grid-unit) * 1.5);
    position: relative;
    transition: all var(--drawing-transition);
}

.use-case-entry:hover {
    border-color: var(--elevation-green);
    box-shadow: 0 2px 8px rgba(90, 124, 101, 0.1);
    transform: translateY(-1px);
}

.use-case-header {
    display: flex;
    align-items: center;
    gap: calc(var(--grid-unit) * 0.75);
    margin-bottom: calc(var(--grid-unit) * 1);
    padding-bottom: calc(var(--grid-unit) * 0.75);
    border-bottom: 1px dotted var(--grid-lines);
}

.use-case-icon {
    font-size: 1.2rem;
    line-height: 1;
}

.use-case-title {
    font-family: var(--font-technical);
    font-size: 0.85rem;
    color: var(--elevation-green);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
}

.use-case-description p {
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: var(--technical-ink);
    line-height: 1.5;
    margin: 0;
}

/* Impact Stats Bar */
.impact-stats-bar {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: calc(var(--grid-unit) * 1);
    padding-top: calc(var(--grid-unit) * 1.5);
    border-top: 1px solid var(--grid-lines);
}

.impact-stat {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: calc(var(--grid-unit) * 1);
    background: var(--drawing-paper);
    border: 1px solid var(--dimension-lines);
}

.impact-stat .stat-number {
    font-family: var(--font-technical);
    font-size: 1.4rem;
    font-weight: 500;
    color: var(--elevation-green);
    line-height: 1;
    margin-bottom: calc(var(--grid-unit) * 0.5);
    text-transform: uppercase;
}

.impact-stat .stat-label {
    font-family: var(--font-technical);
    font-size: 0.7rem;
    color: var(--technical-ink);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1.2;
}

/* Mobile Responsive for Platform Impact */
@media (max-width: 768px) {
    .platform-impact-section {
        margin-top: calc(var(--grid-unit) * 1);
    }
    
    .platform-impact-toggle {
        padding: calc(var(--grid-unit) * 0.75);
    }
    
    .platform-impact-label {
        font-size: 0.8rem;
    }
    
    .platform-impact-content.expanded {
        padding: calc(var(--grid-unit) * 1);
    }
    
    .use-case-grid {
        grid-template-columns: 1fr;
        gap: calc(var(--grid-unit) * 1);
        margin-bottom: calc(var(--grid-unit) * 1.5);
    }
    
    .use-case-entry {
        padding: calc(var(--grid-unit) * 1);
    }
    
    .use-case-header {
        margin-bottom: calc(var(--grid-unit) * 0.75);
        gap: calc(var(--grid-unit) * 0.5);
    }
    
    .use-case-icon {
        font-size: 1rem;
    }
    
    .use-case-title {
        font-size: 0.8rem;
    }
    
    .use-case-description p {
        font-size: 0.8rem;
        line-height: 1.4;
    }
    
    .impact-stats-bar {
        grid-template-columns: 1fr;
        gap: calc(var(--grid-unit) * 0.75);
    }
    
    .impact-stat {
        padding: calc(var(--grid-unit) * 0.75);
    }
    
    .impact-stat .stat-number {
        font-size: 1.2rem;
    }
    
    .impact-stat .stat-label {
        font-size: 0.65rem;
    }
}

.publication-entry {
    background: var(--drawing-paper);
    border: 1px solid var(--grid-lines);
    display: grid;
    grid-template-columns: auto 1fr;
    transition: all var(--drawing-transition);
}

.publication-entry:hover {
    border-color: var(--blueprint-blue);
    box-shadow: 0 2px 8px rgba(46, 89, 132, 0.1);
}

/* Publication Header (Left Side) */
.publication-header {
    background: var(--paper-texture);
    padding: calc(var(--grid-unit) * 2);
    border-right: 1px solid var(--grid-lines);
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 1);
    min-width: 120px;
}

.pub-reference {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.pub-number {
    font-family: var(--font-technical);
    font-size: 0.9rem;
    color: var(--annotation-red);
    font-weight: 500;
}

.pub-year {
    font-family: var(--font-technical);
    font-size: 0.8rem;
    color: var(--technical-ink);
    font-weight: 500;
}

.pub-type {
    font-family: var(--font-technical);
    font-size: 0.7rem;
    color: var(--dimension-lines);
    text-transform: uppercase;
}

.pub-classification {
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.primary-tag,
.secondary-tag {
    font-family: var(--font-technical);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 2px 6px;
    border: 1px solid;
    text-align: center;
}

.primary-tag {
    color: var(--blueprint-blue);
    border-color: var(--blueprint-blue);
    background: rgba(46, 89, 132, 0.1);
}

.secondary-tag {
    color: var(--construction-orange);
    border-color: var(--construction-orange);
    background: rgba(209, 122, 71, 0.1);
}

/* Publication Specification (Right Side) */
.publication-specification {
    padding: calc(var(--grid-unit) * 2);
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 1.5);
}

.pub-title-block {
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 1);
}

.pub-title {
    font-family: var(--font-technical);
    font-size: 1.1rem;
    color: var(--technical-ink);
    font-weight: 500;
    line-height: 1.4;
    margin: 0;
}

.pub-authors {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.author {
    font-family: var(--font-body);
    font-size: 0.85rem;
    color: var(--dimension-lines);
}

.author.primary {
    color: var(--blueprint-blue);
    font-weight: 500;
}

.pub-details {
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 1);
}

.pub-venue {
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--technical-ink);
    font-style: italic;
}

.pub-description {
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--technical-ink);
    line-height: 1.6;
}

.pub-access {
    margin-top: calc(var(--grid-unit) * 0.5);
}

.technical-access {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 6px 12px;
    border: 1px solid var(--dimension-lines);
    background: var(--drawing-paper);
    text-decoration: none;
    transition: all var(--drawing-transition);
}

.technical-access:hover {
    background: var(--blueprint-blue);
    border-color: var(--blueprint-blue);
}

.technical-access:hover .access-label,
.technical-access:hover .access-code {
    color: var(--drawing-paper);
}

.access-label {
    font-family: var(--font-technical);
    font-size: 0.8rem;
    color: var(--technical-ink);
    text-transform: uppercase;
}

.access-code {
    font-family: var(--font-technical);
    font-size: 0.75rem;
    color: var(--annotation-red);
}

/* ==========================================================================
   ULTRA-COMPACT PUBLICATIONS DISPLAY (IN TITLE BLOCK)
   ========================================================================== */

/* Ultra-Compact Publications Container */
.compact-publications-display {
    margin-top: calc(var(--grid-unit) * 1.5);
    padding-top: calc(var(--grid-unit) * 1.5);
    border-top: 1px solid var(--grid-lines);
    background: var(--drawing-paper);
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 0.5);
}

.compact-publications-display:empty {
    display: none;
}

/* Ultra-Compact Publication Entry */
.ultra-compact-publication {
    background: var(--paper-texture);
    border: 1px solid var(--grid-lines);
    padding: calc(var(--grid-unit) * 0.75);
    transition: all var(--drawing-transition);
    display: grid;
    grid-template-columns: auto 1fr min-content;
    gap: calc(var(--grid-unit) * 0.75);
    align-items: start;
    min-height: 60px; /* Increased to accommodate multi-line text */
    contain: layout style; /* Performance optimization */
}

.ultra-compact-publication:hover {
    border-color: var(--blueprint-blue);
    background: var(--drawing-paper);
    box-shadow: 0 1px 3px rgba(46, 89, 132, 0.1);
}

/* Ultra-Compact Reference (Left) */
.ultra-compact-ref {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 1px;
    min-width: 45px;
}

.ultra-pub-number {
    font-family: var(--font-technical);
    font-size: 0.65rem;
    color: var(--annotation-red);
    font-weight: 500;
    line-height: 1;
}

.ultra-pub-year {
    font-family: var(--font-technical);
    font-size: 0.6rem;
    color: var(--dimension-lines);
    line-height: 1;
}

.ultra-pub-tag {
    font-family: var(--font-technical);
    font-size: 0.55rem;
    color: var(--blueprint-blue);
    background: rgba(46, 89, 132, 0.1);
    border: 1px solid var(--blueprint-blue);
    padding: 1px 3px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    line-height: 1;
}

/* Ultra-Compact Content (Center) */
.ultra-compact-content {
    display: flex;
    flex-direction: column;
    gap: 2px;
    min-width: 0;
    width: 100%;
    flex: 1;
}

.ultra-pub-title {
    font-family: var(--font-technical);
    font-size: clamp(0.7rem, 0.7rem + 0.3vw, 0.85rem);
    color: var(--technical-ink);
    font-weight: 500;
    line-height: 1.3;
    margin: 0;
    width: 100%;
    
    /* Multi-line display with ellipsis */
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2; /* 2 lines on mobile, will be overridden for desktop */
    overflow: hidden;
    word-break: break-word;
    hyphens: auto;
}

.ultra-pub-meta {
    display: flex;
    flex-direction: column;
    gap: 1px;
    width: 100%;
}

.ultra-authors {
    font-family: var(--font-body);
    font-size: clamp(0.55rem, 0.55rem + 0.2vw, 0.65rem);
    color: var(--dimension-lines);
    line-height: 1.2;
    width: 100%;
    
    /* Multi-line support */
    display: -webkit-box;
    -webkit-box-orient: vertical;
    -webkit-line-clamp: 2;
    overflow: hidden;
    word-break: break-word;
}

.ultra-venue {
    font-family: var(--font-body);
    font-size: clamp(0.55rem, 0.55rem + 0.15vw, 0.65rem);
    color: var(--dimension-lines);
    font-style: italic;
    line-height: 1.2;
    width: 100%;
    
    /* Single line with ellipsis */
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Ultra-Compact Access (Right) */
.ultra-compact-access {
    display: flex;
    align-items: center;
    min-width: 20px;
}

.ultra-access-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    border: 1px solid var(--dimension-lines);
    background: var(--drawing-paper);
    text-decoration: none;
    transition: all var(--drawing-transition);
}

.ultra-access-link:hover {
    background: var(--blueprint-blue);
    border-color: var(--blueprint-blue);
}

.ultra-access-icon {
    font-family: var(--font-technical);
    font-size: 0.6rem;
    color: var(--dimension-lines);
    transition: color var(--drawing-transition);
}

.ultra-access-link:hover .ultra-access-icon {
    color: var(--drawing-paper);
}

/* Dynamic height adjustment - Much more compact */
.publications-title-block[data-publication-count="1"] {
    min-height: 120px;
}

.publications-title-block[data-publication-count="2"] {
    min-height: 140px;
}

.publications-title-block[data-publication-count="3"] {
    min-height: 160px;
}

.publications-title-block[data-publication-count="4"] {
    min-height: 180px;
}

.publications-title-block[data-publication-count="5"] {
    min-height: 200px;
}

.publications-title-block[data-publication-count="6"] {
    min-height: 220px;
}

.publications-title-block[data-publication-count="7"] {
    min-height: 240px;
}

.publications-title-block[data-publication-count="8"] {
    min-height: 260px;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .ultra-compact-publication {
        grid-template-columns: auto 1fr;
        gap: calc(var(--grid-unit) * 0.5);
        padding: calc(var(--grid-unit) * 0.5);
    }
    
    .ultra-compact-access {
        grid-column: 1 / -1;
        margin-top: 4px;
        justify-self: start;
    }
    
    .ultra-compact-ref {
        flex-direction: row;
        gap: 4px;
        min-width: auto;
    }
    
    .ultra-pub-title {
        font-size: 0.7rem;
    }
    
    .ultra-authors,
    .ultra-venue {
        font-size: 0.55rem;
    }
    
    /* Adjust mobile heights - even more compact */
    .publications-title-block[data-publication-count="1"] {
        min-height: 100px;
    }
    
    .publications-title-block[data-publication-count="2"] {
        min-height: 120px;
    }
    
    .publications-title-block[data-publication-count="3"] {
        min-height: 140px;
    }
    
    .publications-title-block[data-publication-count="4"] {
        min-height: 160px;
    }
    
    .publications-title-block[data-publication-count="5"] {
        min-height: 180px;
    }
    
    .publications-title-block[data-publication-count="6"] {
        min-height: 200px;
    }
    
    .publications-title-block[data-publication-count="7"] {
        min-height: 220px;
    }
    
    .publications-title-block[data-publication-count="8"] {
        min-height: 240px;
    }
}

/* Responsive Design */
@media (max-width: 768px) {
    /* Mobile Publications Reorganization - Filters at Top */
    .publications-title-block {
        grid-template-columns: 1fr;
        gap: calc(var(--grid-unit) * 1); /* Reduced gap */
        padding: calc(var(--grid-unit) * 1.5); /* Reduced padding */
        border: 1px solid var(--dimension-lines); /* Simplified border */
    }
    
    .controls-panel {
        margin-bottom: calc(var(--grid-unit) * 1);
        padding: calc(var(--grid-unit) * 1);
        border: 1px solid var(--dimension-lines);
        background: var(--paper-texture);
        position: sticky;
        top: calc(var(--grid-unit) * 1);
        z-index: 10;
        box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    }
    
    .domain-controls {
        display: flex;
        flex-direction: column;
        gap: calc(var(--grid-unit) * 0.5);
    }
    
    .domain-filter {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: calc(var(--grid-unit) * 0.75) calc(var(--grid-unit) * 1);
        text-align: left;
        border: 1px solid var(--grid-lines);
        background: var(--drawing-paper);
        margin-bottom: calc(var(--grid-unit) * 0.25);
        transition: all 0.2s ease;
    }
    
    .domain-filter:hover,
    .domain-filter.active {
        background: var(--blueprint-blue);
        color: var(--drawing-paper);
        border-color: var(--blueprint-blue);
        transform: translateX(4px);
        box-shadow: 0 2px 6px rgba(46, 89, 132, 0.3);
    }
    
    .domain-filter.active {
        border-left: 4px solid var(--annotation-red);
    }
    
    .domain-filter:hover .filter-code,
    .domain-filter.active .filter-code,
    .domain-filter:hover .filter-label,
    .domain-filter.active .filter-label,
    .domain-filter:hover .filter-count,
    .domain-filter.active .filter-count {
        color: var(--drawing-paper);
    }
    
    .filter-code {
        font-weight: 500;
        min-width: 40px;
    }
    
    .filter-label {
        flex: 1;
        margin: 0 calc(var(--grid-unit) * 0.5);
    }
    
    .filter-count {
        font-size: 0.8rem;
        opacity: 0.8;
    }
    
    /* Optimize publications header for mobile with filters on top */
    .publications-header {
        padding: calc(var(--grid-unit) * 1);
    }
    
    .section-title {
        font-size: 1.5rem;
        margin-bottom: calc(var(--grid-unit) * 0.75);
    }
    
    .publications-summary {
        margin-bottom: calc(var(--grid-unit) * 1);
    }
    
    .compact-publications-display {
        border-top: 1px solid var(--grid-lines);
        padding-top: calc(var(--grid-unit) * 1);
        margin-top: calc(var(--grid-unit) * 1);
    }
    
    /* Panel title optimization for mobile filters */
    .controls-panel .panel-title {
        margin-bottom: calc(var(--grid-unit) * 0.75);
        padding-bottom: calc(var(--grid-unit) * 0.5);
        border-bottom: 1px solid var(--grid-lines);
    }
    
    .spec-label {
        font-size: 0.9rem;
        font-weight: 500;
    }
    
    .publication-entry {
        grid-template-columns: 1fr;
        margin-bottom: calc(var(--grid-unit) * 1); /* Reduced margin */
        border: 1px solid var(--grid-lines); /* Single border only */
    }
    
    .publication-header {
        border-right: none;
        border-bottom: 1px solid var(--grid-lines);
        flex-direction: row;
        justify-content: space-between;
        padding: calc(var(--grid-unit) * 0.75); /* Reduced padding */
    }
    
    .publication-content {
        padding: calc(var(--grid-unit) * 0.75); /* Reduced content padding */
    }
    
    .publications-summary {
        flex-wrap: wrap;
        gap: calc(var(--grid-unit) * 0.5); /* Reduced gap */
    }
    
    .summary-stat {
        font-size: 0.8rem;
        padding: calc(var(--grid-unit) * 0.25) calc(var(--grid-unit) * 0.5); /* Reduced padding */
    }
    
    /* Optimize compact publications container */
    #compact-publications-container {
        padding: calc(var(--grid-unit) * 1); /* Reduced padding */
        border: 1px solid var(--grid-lines); /* Single border */
    }
    
    .ultra-compact-publication {
        padding: calc(var(--grid-unit) * 0.5); /* Reduced padding */
        margin-bottom: calc(var(--grid-unit) * 0.5); /* Reduced margin */
        border-bottom: 1px solid var(--grid-lines);
        border-left: none;
        border-right: none;
        border-top: none;
    }
    
    .ultra-compact-publication:last-child {
        border-bottom: none;
    }
}

/* ==========================================================================
   ENHANCED NAVIGATION & INTERACTIVE ELEMENTS
   ========================================================================== */

/* Active navigation state highlighting */
.nav-link {
    position: relative;
    transition: all var(--drawing-transition);
}

.nav-link[aria-current="true"]::after,
.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--annotation-red);
    transform: scaleX(1);
    transition: transform var(--drawing-transition);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 100%;
    height: 2px;
    background: var(--dimension-lines);
    transform: scaleX(0);
    transition: transform var(--drawing-transition);
}

.nav-link:hover::after {
    transform: scaleX(1);
}

/* Back to top button */
.back-to-top {
    position: fixed;
    bottom: 32px;
    right: 32px;
    width: 56px;
    height: 56px;
    background: var(--technical-ink);
    color: var(--drawing-paper);
    border: 2px solid var(--dimension-lines);
    border-radius: 50%;
    font-family: var(--font-technical);
    font-size: 20px;
    cursor: pointer;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transform: translateY(20px);
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.back-to-top:hover {
    background: var(--annotation-red);
    border-color: var(--annotation-red);
    transform: translateY(-2px);
    box-shadow: 0 6px 16px rgba(0, 0, 0, 0.2);
}

.back-to-top:focus {
    outline: 3px solid var(--construction-orange);
    outline-offset: 3px;
}

/* Enhanced loading states */
.loading-state {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    color: var(--dimension-lines);
    font-family: var(--font-technical);
    font-size: var(--technical-note);
}

.loading-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--grid-lines);
    border-top: 2px solid var(--blueprint-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Improved touch targets for mobile */
@media (max-width: 768px) {
    .social-link-compact,
    .filter-btn,
    .category-header,
    .nav-link {
        min-height: 44px;
        min-width: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
        padding: 12px;
    }
    
    .back-to-top {
        width: 64px;
        height: 64px;
        bottom: 24px;
        right: 24px;
        font-size: 24px;
    }
}

/* ==========================================================================
   TECHNICAL DRAWING LINKS & INTERACTIVE ELEMENTS
   ========================================================================== */

a {
    color: var(--blueprint-blue);
    text-decoration: none;
    transition: all var(--drawing-transition);
    position: relative;
    border-bottom: 1px dotted var(--dimension-lines);
}

a:hover {
    color: var(--draft-blue);
    border-bottom: 1px solid var(--blueprint-blue);
    /* PERFORMANCE: Use transform instead of position change */
    transform: var(--hover-lift);
}

/* Technical annotation links */
.publication-link, .project-link {
    display: inline-block;
    padding: 4px 8px;
    background: var(--paper-texture);
    border: 1px solid var(--dimension-lines);
    border-radius: 2px;
    font-family: var(--font-annotations);
    font-size: var(--technical-note);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: background-color var(--drawing-transition), color var(--drawing-transition), border-color var(--drawing-transition), transform var(--drawing-transition);
    position: relative;
    overflow: hidden;
    transform: var(--gpu-transform);
    contain: layout style;
    will-change: transform;
}

.publication-link:hover, .project-link:hover {
    background: var(--blueprint-blue);
    color: var(--drawing-paper);
    border-color: var(--blueprint-blue);
    transform: translate3d(0, -2px, 0);
}

/* PERFORMANCE: Simplified shine effect */
.publication-link::before, .project-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
    transition: left 0.3s ease-out;
    /* PERFORMANCE: GPU acceleration */
    transform: translateZ(0);
}

.publication-link:hover::before, .project-link:hover::before {
    left: 100%;
}

/* ==========================================================================
   ARCHITECTURAL TITLE BLOCK & TECHNICAL NAVIGATION
   ========================================================================== */

.header {
    margin-bottom: calc(var(--grid-unit) * 6);
    position: relative;
    background: var(--paper-texture);
    border: 2px solid var(--dimension-lines);
    border-radius: 4px;
    overflow: hidden;
    /* PERFORMANCE: Contain repaints */
    contain: layout;
}

/* Title block frame - mimics architectural drawing title blocks */
.header::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 8px;
    right: 8px;
    bottom: 8px;
    border: 1px solid var(--grid-lines);
    pointer-events: none;
    z-index: 0;
}

/* Drawing number annotation */
.header::after {
    content: 'DWG-001';
    position: absolute;
    top: 12px;
    right: 16px;
    font-family: var(--font-annotations);
    font-size: var(--technical-note);
    color: var(--dimension-lines);
    text-transform: uppercase;
    letter-spacing: 1px;
    z-index: 2;
}

/* Header Top Bar with Navigation */
.header-top {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: calc(var(--grid-unit) * 1.5) calc(var(--grid-unit) * 2);
    background: rgba(46, 89, 132, 0.03);
    border-bottom: 1px solid var(--grid-lines);
    position: relative;
    z-index: 2;
}

.name {
    margin-bottom: calc(var(--grid-unit) * 0.5);
    position: relative;
    z-index: 1;
    line-height: 1.2;
}

.title {
    color: var(--dimension-lines);
    font-size: 0.95rem;
    margin-bottom: 0;
    font-weight: 400;
    font-family: var(--font-annotations);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    position: relative;
    z-index: 1;
    line-height: 1.4;
}

/* Improved Header Content Layout */
.header-content {
    padding: calc(var(--grid-unit) * 4) calc(var(--grid-unit) * 4);
    position: relative;
    z-index: 1;
}

.header-main {
    display: flex;
    align-items: center;
    gap: calc(var(--grid-unit) * 6);
    max-width: 100%;
}

.header-info {
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 1.5);
    min-width: 0; /* Allow text to wrap */
}

.header-photo {
    position: relative;
    flex-shrink: 0;
}

.headshot {
    width: 180px;
    height: 180px;
    border-radius: 10px;
    object-fit: cover;
    border: 3px solid var(--dimension-lines);
    background: var(--drawing-paper);
    position: relative;
    transition: border-color var(--drawing-transition), transform var(--drawing-transition), box-shadow var(--drawing-transition);
    box-shadow: 0 3px 12px rgba(46, 89, 132, 0.12);
    /* PERFORMANCE: GPU acceleration for transforms */
    transform: var(--gpu-transform);
    /* CRITICAL: Completely remove any color filtering */
    filter: none !important;
    /* Create new stacking context to isolate from parent filters */
    isolation: isolate;
    contain: layout style;
    will-change: transform;
}

.headshot:hover {
    border-color: var(--blueprint-blue);
    transform: translate3d(0, -2px, 0);
    box-shadow: 0 4px 16px rgba(46, 89, 132, 0.2);
}

/* Simplified architectural frame effect */
.header-photo::before {
    content: '';
    position: absolute;
    top: -8px;
    left: -8px;
    right: -8px;
    bottom: -8px;
    border: 1px dashed var(--grid-lines);
    border-radius: 16px;
    pointer-events: none;
    transition: border-color var(--drawing-transition);
}

.header-photo:hover::before {
    border-color: var(--blueprint-blue);
}

/* Simplified technical annotation */
.header-photo::after {
    content: 'ID';
    position: absolute;
    bottom: -18px;
    right: -10px;
    font-family: var(--font-annotations);
    font-size: 0.7rem;
    color: var(--dimension-lines);
    background: var(--drawing-paper);
    padding: 2px 6px;
    border-radius: 2px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    border: 1px solid var(--grid-lines);
    transition: all var(--drawing-transition);
}

.header-photo:hover::after {
    color: var(--blueprint-blue);
    border-color: var(--blueprint-blue);
}

/* Compact Social Links in Header */
.social-links {
    display: flex;
    gap: calc(var(--grid-unit) * 0.75);
    margin-top: calc(var(--grid-unit) * 1.5);
    align-items: center;
}

.social-link {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--paper-texture);
    border: 1px solid var(--dimension-lines);
    border-radius: 50%;
    color: var(--blueprint-blue);
    transition: all var(--drawing-transition);
    position: relative;
    overflow: hidden;
    border-bottom: 1px solid var(--dimension-lines);
    text-decoration: none;
    /* PERFORMANCE: GPU acceleration */
    transform: translateZ(0);
}

.social-link:hover {
    background: var(--blueprint-blue);
    color: var(--drawing-paper);
    border-color: var(--blueprint-blue);
    transform: translateY(-2px) scale(1.1);
    box-shadow: 0 4px 12px rgba(46, 89, 132, 0.2);
    border-bottom: 1px solid var(--blueprint-blue);
}

.social-icon {
    font-size: 0.9rem;
    transition: transform var(--drawing-transition);
    line-height: 1;
}

.social-link:hover .social-icon {
    transform: scale(1.1);
}

/* PERFORMANCE: Simplified glow effect */
.social-link::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255,255,255,0.3);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.3s ease, height 0.3s ease;
}

.social-link:hover::before {
    width: 100%;
    height: 100%;
}

/* Technical navigation - looks like drawing index */
.navigation {
    display: flex;
    gap: calc(var(--grid-unit) * 0.5);
    flex-wrap: wrap;
    position: relative;
    z-index: 1;
}

.navigation a {
    font-family: var(--font-annotations);
    font-size: var(--technical-note);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 400;
    padding: calc(var(--grid-unit) * 0.5) calc(var(--grid-unit) * 1.25);
    transition: all var(--drawing-transition);
    position: relative;
    border-bottom: 2px solid transparent;
    color: var(--technical-ink);
}

.navigation a:hover {
    color: var(--blueprint-blue);
    border-bottom-color: var(--blueprint-blue);
    transform: translateY(-1px);
}

/* Active navigation indicator */
.navigation a:target,
.navigation a.active {
    color: var(--blueprint-blue);
    border-bottom-color: var(--blueprint-blue);
}

/* Mobile Navigation Toggle */
.mobile-nav-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    flex-direction: column;
    justify-content: space-around;
    width: 24px;
    height: 24px;
    padding: 0;
    position: relative;
    z-index: 1001;
}

/* Hide mobile-specific elements by default */
.mobile-disclosure {
    display: none;
}

/* Hide mobile education dropdown elements by default */
.mobile-education-toggle {
    display: none;
}

.secondary-education {
    display: block; /* Show by default on desktop */
}

.hamburger-line {
    display: block;
    height: 2px;
    width: 100%;
    background: var(--technical-ink);
    transition: all 0.3s ease;
    transform-origin: center;
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger-line:first-child {
    transform: rotate(45deg) translate(5px, 5px);
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger-line:nth-child(2) {
    opacity: 0;
}

.mobile-nav-toggle[aria-expanded="true"] .hamburger-line:last-child {
    transform: rotate(-45deg) translate(7px, -6px);
}

/* ==========================================================================
   TECHNICAL DRAWING SECTIONS
   ========================================================================== */

.section {
    margin-bottom: var(--section-spacing);
    padding-top: calc(var(--grid-unit) * 3);
    position: relative;
    /* PERFORMANCE: Contain layout */
    contain: layout;
}

.section:first-of-type {
    padding-top: 0;
}

.section h2:first-child {
    margin-top: 0;
}

/* Section elevation markers */
.section::before {
    content: '';
    position: absolute;
    left: -24px;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--blueprint-blue) 0%, var(--dimension-lines) 50%, transparent 100%);
}

/* ==========================================================================
   ABOUT SECTION - TECHNICAL SPECIFICATIONS
   ========================================================================== */

.credentials {
    margin-top: calc(var(--grid-unit) * 6);
    background: var(--paper-texture);
    border: 1px solid var(--grid-lines);
    border-radius: 4px;
    padding: calc(var(--grid-unit) * 3);
    position: relative;
}

.credentials::before {
    content: 'QUALIFICATIONS';
    position: absolute;
    top: -8px;
    left: 16px;
    background: var(--drawing-paper);
    padding: 0 8px;
    font-family: var(--font-annotations);
    font-size: var(--technical-note);
    color: var(--dimension-lines);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.degree {
    margin-bottom: calc(var(--grid-unit) * 3);
    padding-bottom: calc(var(--grid-unit) * 2);
    position: relative;
}

.degree:not(:last-child) {
    border-bottom: 1px dashed var(--grid-lines);
}

.degree::before {
    content: '●';
    color: var(--blueprint-blue);
    margin-right: 8px;
    font-size: 0.8em;
}

.meta {
    color: var(--dimension-lines);
    font-size: 0.9rem;
    font-family: var(--font-annotations);
}

/* ==========================================================================
   RESEARCH SECTION - TECHNICAL SPECIFICATIONS
   ========================================================================== */

.research-areas {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: calc(var(--grid-unit) * 4);
}

.research-area {
    background: var(--paper-texture);
    border: 1px solid var(--grid-lines);
    border-radius: 4px;
    padding: calc(var(--grid-unit) * 3);
    position: relative;
    transition: all var(--drawing-transition);
    /* PERFORMANCE: GPU acceleration */
    transform: translateZ(0);
}

.research-area:hover {
    border-color: var(--blueprint-blue);
    transform: var(--hover-lift);
    box-shadow: 0 4px 12px rgba(46, 89, 132, 0.1);
}

/* Clickable research areas */
.clickable-area {
    cursor: pointer;
    overflow: hidden;
}

.clickable-area:hover {
    border-color: var(--construction-orange);
    background: linear-gradient(135deg, var(--paper-texture) 0%, rgba(209, 122, 71, 0.05) 100%);
    transform: translateY(-4px) scale(1.02);
    box-shadow: 0 8px 25px rgba(209, 122, 71, 0.2);
}

.clickable-area .research-content {
    position: relative;
    z-index: 2;
}

.clickable-area .explore-indicator {
    color: var(--construction-orange);
    font-weight: bold;
    opacity: 0.7;
    transition: all 0.3s ease;
    transform: translateX(0);
}

.clickable-area:hover .explore-indicator {
    opacity: 1;
    transform: translateX(4px);
    color: var(--annotation-red);
}

.research-stats {
    display: flex;
    gap: calc(var(--grid-unit) * 2);
    margin-top: calc(var(--grid-unit) * 2);
    flex-wrap: wrap;
}

.stat-item {
    background: var(--drawing-paper);
    border: 1px solid var(--dimension-lines);
    padding: 4px 8px;
    border-radius: 3px;
    font-family: var(--font-annotations);
    font-size: 0.7rem;
    color: var(--blueprint-blue);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.3s ease;
}

.clickable-area:hover .stat-item {
    background: var(--construction-orange);
    color: var(--drawing-paper);
    border-color: var(--construction-orange);
    transform: translateY(-2px);
}

.research-hover-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: transparent;
    opacity: 0;
    pointer-events: none;
    z-index: 1;
    border-radius: 4px;
}

.clickable-area:hover .research-hover-overlay {
    opacity: 0;
}

.overlay-content {
    display: none;
}

/* PERFORMANCE: Simplified highlight animation */
.research-area.highlighted {
    border-color: var(--annotation-red);
    background: linear-gradient(135deg, rgba(201, 74, 60, 0.1) 0%, var(--paper-texture) 100%);
    transform: scale(1.05);
    box-shadow: 0 8px 30px rgba(201, 74, 60, 0.3);
}

.research-area::before {
    content: '';
    position: absolute;
    top: 8px;
    right: 8px;
    width: 8px;
    height: 8px;
    background: var(--annotation-red);
    border-radius: 50%;
}

.research-area h3 {
    margin-bottom: calc(var(--grid-unit) * 2);
}

.research-area p {
    margin-bottom: 0;
    font-size: 0.95rem;
}

/* ==========================================================================
   PUBLICATIONS SECTION - ORGANIZED TECHNICAL DRAWING SHOWCASE
   ========================================================================== */

/* Publications Filter Controls */
.publications-filter {
    margin-bottom: calc(var(--grid-unit) * 6);
    background: var(--paper-texture);
    border: 1px solid var(--grid-lines);
    border-radius: 6px;
    padding: calc(var(--grid-unit) * 3);
    position: relative;
}

.publications-filter::before {
    content: 'PUBLICATION FILTERS';
    position: absolute;
    top: -8px;
    left: 16px;
    background: var(--drawing-paper);
    padding: 0 8px;
    font-family: var(--font-annotations);
    font-size: var(--technical-note);
    color: var(--dimension-lines);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.filter-controls {
    display: flex;
    gap: calc(var(--grid-unit) * 1);
    flex-wrap: wrap;
}

.filter-btn {
    background: var(--drawing-paper);
    border: 1px solid var(--dimension-lines);
    color: var(--blueprint-blue);
    padding: calc(var(--grid-unit) * 1) calc(var(--grid-unit) * 2);
    border-radius: 3px;
    font-family: var(--font-annotations);
    font-size: var(--technical-note);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all var(--drawing-transition);
    position: relative;
    overflow: hidden;
}

.filter-btn:hover {
    background: var(--blueprint-blue);
    color: var(--drawing-paper);
    transform: var(--hover-lift);
}

.filter-btn.active {
    background: var(--draft-blue);
    color: var(--drawing-paper);
    border-color: var(--draft-blue);
}

/* Publication Categories */
.publication-category {
    margin-bottom: calc(var(--grid-unit) * 6);
    border: 2px solid var(--dimension-lines);
    border-radius: 8px;
    background: var(--drawing-paper);
    overflow: hidden;
    transition: all var(--drawing-transition);
    /* PERFORMANCE: Contain layout */
    contain: layout;
}

.publication-category:hover {
    border-color: var(--blueprint-blue);
    box-shadow: 0 4px 16px rgba(46, 89, 132, 0.1);
}

.category-header {
    background: var(--paper-texture);
    padding: calc(var(--grid-unit) * 3);
    border-bottom: 1px solid var(--grid-lines);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: space-between;
    transition: all var(--drawing-transition);
    position: relative;
}

.category-header:hover {
    background: var(--blueprint-blue);
    color: var(--drawing-paper);
}

.category-header:hover .category-title,
.category-header:hover .expand-icon {
    color: var(--drawing-paper);
}

.category-title {
    display: flex;
    align-items: center;
    gap: calc(var(--grid-unit) * 1);
    margin: 0;
    font-size: var(--subsection-title);
    color: var(--blueprint-blue);
    font-weight: 500;
}

.category-title::before {
    content: none; /* Remove the arrow from h3 */
}

.category-icon {
    font-size: 1.2em;
    margin-right: 4px;
}

.publication-count {
    font-size: 0.9em;
    color: var(--dimension-lines);
    font-weight: normal;
    background: var(--drawing-paper);
    padding: 2px 6px;
    border-radius: 2px;
    border: 1px solid var(--grid-lines);
}

.expand-icon {
    font-family: var(--font-annotations);
    font-size: 1rem;
    color: var(--blueprint-blue);
    transition: transform var(--drawing-transition);
    transform-origin: center;
}

.category-header.collapsed .expand-icon {
    transform: rotate(-90deg);
}

.category-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s ease;
    opacity: 0;
}

.category-content.expanded {
    max-height: 5000px; /* Large enough to accommodate content */
    opacity: 1;
}

.publication-list {
    display: grid;
    grid-template-columns: 1fr;
    gap: calc(var(--grid-unit) * 4);
    padding: calc(var(--grid-unit) * 3);
}

/* Publication Tags */
.publication-tags {
    display: flex;
    gap: calc(var(--grid-unit) * 1);
    flex-wrap: wrap;
    margin-bottom: calc(var(--grid-unit) * 2);
}

.tag {
    display: inline-block;
    padding: 2px 6px;
    border-radius: 2px;
    font-family: var(--font-annotations);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-weight: 500;
    line-height: 1.2;
}

.tag-primary {
    background: var(--blueprint-blue);
    color: var(--drawing-paper);
    border: 1px solid var(--blueprint-blue);
}

.tag-secondary {
    background: var(--paper-texture);
    color: var(--dimension-lines);
    border: 1px solid var(--grid-lines);
}

.tag-highlight {
    background: var(--construction-orange);
    color: var(--drawing-paper);
    border: 1px solid var(--construction-orange);
}

/* Publication Cards in Categories */
.publication-category .publication {
    border: 1px solid var(--grid-lines);
    border-radius: 4px;
    margin-bottom: 0;
}

.publication-category .publication:hover {
    border-color: var(--draft-blue);
}

/* Hidden/Filtered States */
.publication-category.hidden {
    display: none;
}

.publication.hidden {
    display: none;
}

.publication {
    background: var(--drawing-paper);
    border: 2px solid var(--dimension-lines);
    border-radius: 6px;
    padding: calc(var(--grid-unit) * 4);
    position: relative;
    transition: border-color var(--drawing-transition), transform var(--drawing-transition), box-shadow var(--drawing-transition);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    /* PERFORMANCE: GPU acceleration */
    transform: var(--gpu-transform);
    contain: layout style;
    will-change: transform;
}

.publication:hover {
    border-color: var(--blueprint-blue);
    transform: translate3d(0, -2px, 0);
    box-shadow: 0 8px 24px rgba(46, 89, 132, 0.15);
}

/* Publication drawing number */
.publication::before {
    content: 'PUB-' counter(pub-counter, decimal-leading-zero);
    counter-increment: pub-counter;
    position: absolute;
    top: 12px;
    right: 16px;
    font-family: var(--font-annotations);
    font-size: var(--technical-note);
    color: var(--dimension-lines);
    background: var(--paper-texture);
    padding: 2px 6px;
    border-radius: 2px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.publication-list {
    counter-reset: pub-counter;
}

/* Technical frame for each publication */
.publication::after {
    content: '';
    position: absolute;
    top: 6px;
    left: 6px;
    right: 6px;
    bottom: 6px;
    border: 1px dashed var(--grid-lines);
    pointer-events: none;
    border-radius: 3px;
}

.publication h3 {
    margin-bottom: calc(var(--grid-unit) * 2);
    line-height: 1.4;
    color: var(--blueprint-blue);
    padding-right: 80px; /* Space for drawing number */
}

.publication h3::before {
    content: '';
    display: inline-block;
    width: 8px;
    height: 8px;
    background: var(--annotation-red);
    border-radius: 50%;
    margin-right: 8px;
    vertical-align: middle;
}

.authors {
    color: var(--dimension-lines);
    margin-bottom: calc(var(--grid-unit) * 1);
    font-size: 0.9rem;
    font-family: var(--font-annotations);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.authors strong {
    color: var(--blueprint-blue);
    background: var(--paper-texture);
    padding: 1px 4px;
    border-radius: 2px;
}

.venue {
    color: var(--technical-ink);
    margin-bottom: calc(var(--grid-unit) * 2);
    font-size: 0.95rem;
    font-style: italic;
    padding-left: 16px;
    border-left: 3px solid var(--elevation-green);
}

.citations {
    display: inline-block;
    background: var(--construction-orange);
    color: var(--drawing-paper);
    padding: 2px 6px;
    border-radius: 2px;
    font-family: var(--font-annotations);
    font-size: var(--technical-note);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: calc(var(--grid-unit) * 2);
    font-weight: 500;
}

.description {
    background: var(--paper-texture);
    padding: calc(var(--grid-unit) * 2);
    border-radius: 4px;
    border-left: 4px solid var(--draft-blue);
    margin-bottom: calc(var(--grid-unit) * 3);
    font-size: 0.95rem;
    line-height: 1.6;
}

.publication-links {
    display: flex;
    gap: calc(var(--grid-unit) * 2);
    flex-wrap: wrap;
    margin-top: calc(var(--grid-unit) * 2);
}

/* ==========================================================================
   PROJECTS SECTION - INTERACTIVE ARCHITECTURAL GALLERY
   ========================================================================== */

.project-list {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: calc(var(--grid-unit) * 6);
}

.project {
    background: var(--paper-texture);
    border: 2px solid var(--grid-lines);
    border-radius: 8px;
    padding: calc(var(--grid-unit) * 4);
    position: relative;
    transition: all var(--drawing-transition);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    overflow: hidden;
    /* PERFORMANCE: GPU acceleration */
    transform: translateZ(0);
}

.project:hover {
    border-color: var(--elevation-green);
    transform: var(--hover-lift);
    box-shadow: 0 12px 32px rgba(90, 124, 101, 0.2);
}

/* PERFORMANCE: Simplified project overlay */
.project::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, 
        transparent 40%, 
        rgba(90, 124, 101, 0.05) 50%, 
        transparent 60%);
    opacity: 0;
    transition: opacity var(--drawing-transition);
    pointer-events: none;
}

.project:hover::before {
    opacity: 1;
}

/* Project technical number */
.project::after {
    content: 'PROJ-' counter(proj-counter, decimal-leading-zero);
    counter-increment: proj-counter;
    position: absolute;
    top: 12px;
    right: 16px;
    font-family: var(--font-annotations);
    font-size: var(--technical-note);
    color: var(--dimension-lines);
    background: var(--drawing-paper);
    padding: 4px 8px;
    border-radius: 3px;
    border: 1px solid var(--grid-lines);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.project-list {
    counter-reset: proj-counter;
}

.project h3 {
    margin-bottom: calc(var(--grid-unit) * 2);
    color: var(--elevation-green);
    font-size: 1.4rem;
    padding-right: 80px; /* Space for project number */
    position: relative;
}

.project h3::before {
    content: '\u2699'; /* Gear symbol */
    color: var(--construction-orange);
    margin-right: 8px;
    font-size: 0.9em;
}

.project p {
    margin-bottom: calc(var(--grid-unit) * 3);
    font-size: 0.95rem;
    line-height: 1.6;
    background: var(--drawing-paper);
    padding: calc(var(--grid-unit) * 2);
    border-radius: 4px;
    border-left: 4px solid var(--elevation-green);
}

.project-links {
    display: flex;
    gap: calc(var(--grid-unit) * 2);
    flex-wrap: wrap;
    margin-top: calc(var(--grid-unit) * 2);
}

/* Enhanced project links */
.project-links .publication-link {
    background: var(--elevation-green);
    color: var(--drawing-paper);
    border-color: var(--elevation-green);
}

.project-links .publication-link:hover {
    background: var(--construction-orange);
    border-color: var(--construction-orange);
}

/* ==========================================================================
   CONTACT SECTION - TECHNICAL SPECIFICATIONS
   ========================================================================== */

.contact-info {
    line-height: 1.8;
    background: var(--paper-texture);
    border: 2px solid var(--dimension-lines);
    border-radius: 6px;
    padding: calc(var(--grid-unit) * 4);
    position: relative;
}

.contact-info::before {
    content: 'CONTACT DETAILS';
    position: absolute;
    top: -8px;
    left: 16px;
    background: var(--drawing-paper);
    padding: 0 8px;
    font-family: var(--font-annotations);
    font-size: var(--technical-note);
    color: var(--dimension-lines);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.contact-info strong {
    font-weight: 600;
    color: var(--blueprint-blue);
    font-family: var(--font-annotations);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* ==========================================================================
   RESEARCH PLATFORMS SECTION (ARCHITECTURAL STYLE)
   ========================================================================== */

.platforms-professional {
    background: var(--drawing-paper);
    padding: calc(var(--grid-unit) * 4) 0;
    margin-top: calc(var(--grid-unit) * 4);
    position: relative;
}

/* Platforms Title Block */
.platforms-title-block {
    background: var(--drawing-paper);
    border: 2px solid var(--technical-ink);
    display: grid;
    grid-template-columns: 2fr 1fr;
    margin-bottom: calc(var(--grid-unit) * 3);
}

.platforms-header {
    padding: calc(var(--grid-unit) * 3);
    background: var(--paper-texture);
    border-right: 1px solid var(--grid-lines);
}

.platforms-header .section-title {
    font-family: var(--font-technical);
    font-size: 1.8rem;
    color: var(--technical-ink);
    margin: 0;
    margin-bottom: calc(var(--grid-unit) * 1);
    text-transform: uppercase;
    letter-spacing: 2px;
}

.platforms-summary {
    display: flex;
    gap: calc(var(--grid-unit) * 2);
}

/* Platform Controls Panel */
.platform-controls {
    background: var(--drawing-paper);
    padding: calc(var(--grid-unit) * 2);
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 2);
}

.deployment-metrics {
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 1);
}

.metric-entry {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: calc(var(--grid-unit) * 0.5) 0;
    border-bottom: 1px dotted var(--grid-lines);
}

.metric-label {
    font-family: var(--font-technical);
    font-size: 0.7rem;
    color: var(--dimension-lines);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.metric-value {
    font-family: var(--font-technical);
    font-size: 0.8rem;
    color: var(--blueprint-blue);
    font-weight: 500;
}

/* Platform Showcase Container */
.platform-showcase {
    display: grid;
    grid-template-columns: 1fr;
    gap: calc(var(--grid-unit) * 4);
}

/* Platform Showcase Entry */
.platform-showcase-entry {
    background: var(--drawing-paper);
    border: 2px solid var(--technical-ink);
    transition: all var(--drawing-transition);
}

.platform-showcase-entry:hover {
    box-shadow: 0 4px 12px rgba(46, 89, 132, 0.15);
}

/* Showcase Header */
.showcase-header {
    background: var(--paper-texture);
    padding: calc(var(--grid-unit) * 2);
    border-bottom: 1px solid var(--grid-lines);
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: calc(var(--grid-unit) * 2);
}

.showcase-title-block {
    flex: 1;
}

.showcase-reference {
    display: flex;
    align-items: center;
    gap: calc(var(--grid-unit) * 1);
    margin-bottom: calc(var(--grid-unit) * 1);
}

.platform-number {
    font-family: var(--font-technical);
    font-size: 0.8rem;
    color: var(--annotation-red);
    font-weight: 500;
    background: var(--drawing-paper);
    padding: 4px 8px;
    border: 1px solid var(--annotation-red);
}

.platform-status {
    font-family: var(--font-technical);
    font-size: 0.8rem;
    color: var(--success-green);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 4px;
}

.showcase-title {
    font-family: var(--font-technical);
    font-size: 1.4rem;
    color: var(--technical-ink);
    margin: 0 0 calc(var(--grid-unit) * 1) 0;
    font-weight: 500;
}

.showcase-tags {
    display: flex;
    gap: calc(var(--grid-unit) * 0.5);
    flex-wrap: wrap;
}

.tag-badge {
    font-family: var(--font-technical);
    font-size: 0.65rem;
    color: var(--blueprint-blue);
    background: rgba(46, 89, 132, 0.1);
    border: 1px solid var(--blueprint-blue);
    padding: 2px 6px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Showcase Actions */
.showcase-actions {
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 0.75);
}

.action-link {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: calc(var(--grid-unit) * 0.75) calc(var(--grid-unit) * 1);
    border: 1px solid var(--dimension-lines);
    background: var(--drawing-paper);
    text-decoration: none;
    font-family: var(--font-technical);
    font-size: 0.8rem;
    color: var(--technical-ink);
    transition: all var(--drawing-transition);
    min-width: 140px;
}

.action-link:hover {
    background: var(--blueprint-blue);
    border-color: var(--blueprint-blue);
    color: var(--drawing-paper);
}

.action-link .arrow {
    font-size: 0.9rem;
    transition: transform var(--drawing-transition);
}

.action-link:hover .arrow {
    transform: translateX(2px);
}

/* Live Demo Preview - Front and Center */
.showcase-preview {
    background: var(--drawing-paper);
    padding: calc(var(--grid-unit) * 2);
}

.preview-browser {
    border: 2px solid var(--dimension-lines);
    background: var(--drawing-paper);
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.browser-bar {
    background: var(--paper-texture);
    padding: calc(var(--grid-unit) * 1);
    border-bottom: 1px solid var(--grid-lines);
    display: flex;
    align-items: center;
    gap: calc(var(--grid-unit) * 1);
}

.browser-controls {
    display: flex;
    gap: 6px;
}

.control-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.control-dot.red { background: #FF5F57; }
.control-dot.yellow { background: #FFBD2E; }
.control-dot.green { background: #28CA42; }

.browser-url {
    flex: 1;
    background: var(--drawing-paper);
    padding: 4px 8px;
    border: 1px solid var(--grid-lines);
    border-radius: 4px;
    font-family: var(--font-technical);
    font-size: 0.8rem;
    color: var(--technical-ink);
}

.url-protocol {
    color: var(--dimension-lines);
}

.url-domain {
    color: var(--blueprint-blue);
    font-weight: 500;
}

.browser-reload {
    background: var(--drawing-paper);
    border: 1px solid var(--dimension-lines);
    padding: 4px 8px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all var(--drawing-transition);
}

.browser-reload:hover {
    background: var(--blueprint-blue);
    color: var(--drawing-paper);
}

/* Preview Container */
.preview-container {
    height: 400px;
    position: relative;
    background: var(--drawing-paper);
}

.preview-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--paper-texture);
}

.placeholder-content {
    text-align: center;
    padding: calc(var(--grid-unit) * 3);
}

.placeholder-icon {
    font-size: 3rem;
    margin-bottom: calc(var(--grid-unit) * 1);
}

.placeholder-content h4 {
    font-family: var(--font-technical);
    color: var(--technical-ink);
    margin: 0 0 calc(var(--grid-unit) * 1) 0;
}

.placeholder-content p {
    font-family: var(--font-body);
    color: var(--dimension-lines);
    margin: 0 0 calc(var(--grid-unit) * 2) 0;
}

.load-demo-btn {
    background: var(--blueprint-blue);
    color: var(--drawing-paper);
    border: none;
    padding: calc(var(--grid-unit) * 1) calc(var(--grid-unit) * 2);
    font-family: var(--font-technical);
    font-size: 0.9rem;
    cursor: pointer;
    transition: all var(--drawing-transition);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.load-demo-btn:hover {
    background: var(--annotation-red);
    transform: translateY(-1px);
}

/* Preview iframe when loaded */
.preview-iframe {
    width: 100%;
    height: 100%;
    border: none;
    background: white;
}

/* Loading state */
.preview-loading {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--paper-texture);
    color: var(--technical-ink);
    font-family: var(--font-technical);
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 3px solid var(--grid-lines);
    border-top: 3px solid var(--blueprint-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-bottom: calc(var(--grid-unit) * 1);
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Preview fallback */
.preview-fallback {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--paper-texture);
    color: var(--technical-ink);
    font-family: var(--font-technical);
    text-align: center;
    padding: calc(var(--grid-unit) * 2);
}

/* Showcase Description */
.showcase-description {
    padding: calc(var(--grid-unit) * 2);
    border-top: 1px solid var(--grid-lines);
    background: var(--paper-texture);
}

.showcase-description p {
    font-family: var(--font-body);
    font-size: 0.9rem;
    color: var(--technical-ink);
    line-height: 1.6;
    margin: 0;
}

/* Responsive Platform Design */
@media (max-width: 768px) {
    .platforms-title-block {
        grid-template-columns: 1fr;
        gap: calc(var(--grid-unit) * 1); /* Reduced gap */
        padding: calc(var(--grid-unit) * 1.5); /* Reduced padding */
    }
    
    .platforms-professional {
        margin-bottom: calc(var(--grid-unit) * 2); /* Reduced section margin */
    }
    
    .platform-controls {
        padding: calc(var(--grid-unit) * 1); /* Reduced padding */
        border: 1px solid var(--dimension-lines); /* Simplified border */
    }
    
    .platform-showcase {
        gap: calc(var(--grid-unit) * 1.5); /* Reduced gap between projects */
    }
    
    .platform-showcase-entry {
        border: 1px solid var(--grid-lines); /* Single border only */
        margin-bottom: calc(var(--grid-unit) * 1.5); /* Reduced margin */
    }
    
    .showcase-header {
        flex-direction: column;
        align-items: stretch;
        gap: calc(var(--grid-unit) * 1); /* Reduced gap */
        padding: calc(var(--grid-unit) * 1); /* Reduced padding */
    }
    
    .showcase-actions {
        flex-direction: row;
        justify-content: space-between;
        gap: calc(var(--grid-unit) * 0.75); /* Reduced gap */
    }
    
    .action-link {
        flex: 1;
        min-width: auto;
        padding: calc(var(--grid-unit) * 0.5) calc(var(--grid-unit) * 1); /* Reduced padding */
    }
    
    .platforms-summary {
        flex-wrap: wrap;
        gap: calc(var(--grid-unit) * 0.5); /* Reduced gap */
    }
    
    .showcase-preview {
        margin: calc(var(--grid-unit) * 1) 0; /* Reduced margin */
    }
    
    .showcase-description {
        padding: calc(var(--grid-unit) * 1); /* Reduced padding */
    }
    
    .preview-container {
        height: 300px;
    }
    
    .showcase-tags {
        margin-top: calc(var(--grid-unit) * 0.5);
    }
    
    .browser-bar {
        padding: calc(var(--grid-unit) * 0.75);
    }
    
    .browser-url {
        font-size: 0.7rem;
    }
}

/* ==========================================================================
   COMPACT HERO SECTION
   ========================================================================== */

/* Compact Hero Container */
.hero-compact {
    height: 40vh;
    min-height: 300px;
    padding: calc(var(--grid-unit) * 2) 0;
    background: var(--drawing-paper);
    border-bottom: 2px solid var(--dimension-lines);
    position: relative;
}

.hero-compact::before {
    content: 'RESEARCH PROFILE';
    position: absolute;
    top: -8px;
    left: 16px;
    background: var(--drawing-paper);
    padding: 0 8px;
    font-family: var(--font-annotations);
    font-size: var(--technical-note);
    color: var(--dimension-lines);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.hero-grid {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: calc(var(--grid-unit) * 4);
    height: 100%;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 calc(var(--grid-unit) * 2);
}

/* Identity Block */
.identity-block {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    gap: calc(var(--grid-unit));
}

.headshot-compact {
    width: 80px !important;
    height: 80px !important;
    border-radius: 50%;
    border: 3px solid var(--blueprint-blue);
    object-fit: cover;
    transition: all 0.3s ease;
    flex-shrink: 0;
}

.headshot-compact:hover {
    border-color: var(--elevation-green);
    transform: scale(1.05);
}

.identity-text .name {
    font-size: 2rem;
    margin-bottom: calc(var(--grid-unit));
    color: var(--technical-ink);
}

.tagline {
    font-family: var(--font-annotations);
    font-size: 1rem;
    color: var(--blueprint-blue);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: calc(var(--grid-unit) / 2);
    font-weight: 600;
}

.subtitle {
    font-size: 0.9rem;
    color: var(--dimension-lines);
    line-height: 1.4;
    cursor: help;
    border-bottom: 1px dotted var(--blueprint-blue);
    transition: color 0.2s ease;
}

.subtitle:hover {
    color: var(--elevation-green);
    border-bottom-color: var(--elevation-green);
}

/* Metrics Dashboard */
.metrics-dashboard {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: calc(var(--grid-unit) * 2);
    padding: calc(var(--grid-unit) * 2);
}

.metric-card {
    background: var(--paper-texture);
    border: 2px solid var(--blueprint-blue);
    border-radius: 8px;
    padding: calc(var(--grid-unit) * 2);
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: help;
    position: relative;
    overflow: hidden;
}

.metric-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(46, 89, 132, 0.1), transparent);
    transition: left 0.6s ease;
}

.metric-card:hover::before {
    left: 100%;
}

.metric-card.primary {
    grid-column: 1 / -1;
    border-color: var(--elevation-green);
    background: linear-gradient(135deg, var(--paper-texture), rgba(90, 124, 101, 0.08));
}

.metric-card:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(46, 89, 132, 0.15);
    border-color: var(--elevation-green);
}

.metric-number {
    display: block;
    font-size: 2.5rem;
    font-family: var(--font-annotations);
    color: var(--blueprint-blue);
    font-weight: 600;
    line-height: 1;
    margin-bottom: calc(var(--grid-unit) / 2);
}

.metric-card.primary .metric-number {
    color: var(--elevation-green);
    font-size: 3rem;
}

.metric-label {
    display: block;
    font-size: 0.8rem;
    color: var(--dimension-lines);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    font-family: var(--font-annotations);
}

/* Quick Access Section */
.quick-access {
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 2);
    align-items: center;
}

.research-pillars {
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit));
    width: 100%;
}

.pillar-tag {
    background: var(--blueprint-blue);
    color: var(--drawing-paper);
    padding: calc(var(--grid-unit) / 2) calc(var(--grid-unit));
    border-radius: 16px;
    font-size: 0.7rem;
    font-family: var(--font-annotations);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    text-align: center;
    transition: all 0.2s ease;
    cursor: help;
}

.pillar-tag:hover {
    background: var(--elevation-green);
    transform: translateX(4px);
}

.action-buttons {
    display: flex;
    gap: calc(var(--grid-unit));
    width: 100%;
}

.btn-primary, .btn-secondary {
    flex: 1;
    padding: calc(var(--grid-unit) * 1.5) calc(var(--grid-unit) * 2);
    border-radius: 6px;
    text-decoration: none;
    text-align: center;
    font-family: var(--font-annotations);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    transition: all 0.2s ease;
}

.btn-primary {
    background: var(--elevation-green);
    color: var(--drawing-paper);
    border: 2px solid var(--elevation-green);
}

.btn-primary:hover {
    background: var(--construction-orange);
    border-color: var(--construction-orange);
    transform: translateY(-2px);
}

.btn-secondary {
    background: transparent;
    color: var(--blueprint-blue);
    border: 2px solid var(--blueprint-blue);
}

.btn-secondary:hover {
    background: var(--blueprint-blue);
    color: var(--drawing-paper);
    transform: translateY(-2px);
}

.social-links-compact {
    display: flex;
    gap: calc(var(--grid-unit));
    justify-content: center;
}

.social-link-compact {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: var(--paper-texture);
    border: 1px solid var(--grid-lines);
    border-radius: 50%;
    color: var(--dimension-lines);
    text-decoration: none;
    transition: all 0.2s ease;
}

.social-link-compact:hover {
    background: var(--blueprint-blue);
    border-color: var(--blueprint-blue);
    color: var(--drawing-paper);
    transform: translateY(-2px);
}

.social-link-compact .social-icon {
    font-size: 0.8rem;
}

/* ==========================================================================
   ARCHITECTURAL DRAWING FOOTER
   ========================================================================== */

.footer {
    margin-top: calc(var(--grid-unit) * 12);
    padding: calc(var(--grid-unit) * 4) 0 calc(var(--grid-unit) * 6) 0;
    border-top: 2px solid var(--dimension-lines);
    background: var(--paper-texture);
    position: relative;
}

.footer::before {
    content: 'END OF DRAWING';
    position: absolute;
    top: -8px;
    right: 16px;
    background: var(--drawing-paper);
    padding: 0 8px;
    font-family: var(--font-annotations);
    font-size: var(--technical-note);
    color: var(--dimension-lines);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.footer-divider {
    width: 100%;
    height: 1px;
    background: linear-gradient(90deg, transparent 0%, var(--grid-lines) 50%, transparent 100%);
    margin-bottom: calc(var(--grid-unit) * 3);
}

.footer-text {
    color: var(--dimension-lines);
    font-size: 0.85rem;
    text-align: center;
    margin-bottom: 0;
    font-family: var(--font-annotations);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ==========================================================================
   TECHNICAL CODE BLOCKS & DRAWING ELEMENTS
   ========================================================================== */

code, pre {
    font-family: var(--font-annotations);
    background: var(--paper-texture);
    border: 1px solid var(--grid-lines);
    padding: calc(var(--grid-unit) * 1) calc(var(--grid-unit) * 2);
    font-size: 0.85rem;
    border-radius: 3px;
}

pre {
    padding: calc(var(--grid-unit) * 2);
    margin-bottom: calc(var(--grid-unit) * 3);
    overflow-x: auto;
    line-height: 1.5;
    border-left: 4px solid var(--blueprint-blue);
}

/* ==========================================================================
   TECHNICAL BLOCKQUOTES
   ========================================================================== */

blockquote {
    border-left: 4px solid var(--blueprint-blue);
    padding-left: calc(var(--grid-unit) * 3);
    margin: calc(var(--grid-unit) * 4) 0;
    font-style: italic;
    color: var(--technical-ink);
    background: var(--paper-texture);
    padding: calc(var(--grid-unit) * 2) calc(var(--grid-unit) * 3);
    border-radius: 4px;
    position: relative;
}

blockquote::before {
    content: '"';
    font-size: 2em;
    color: var(--blueprint-blue);
    position: absolute;
    top: 8px;
    left: 8px;
    line-height: 1;
}

/* ==========================================================================
   IMPACT SIGNIFICANCE SECTIONS
   ========================================================================== */

/* Impact Significance Block */
.impact-significance-block {
    margin-top: var(--detail-spacing);
    padding-top: var(--detail-spacing);
    border-top: 1px solid var(--grid-lines);
}

/* Impact Preview */
.impact-preview {
    margin: var(--detail-spacing) 0;
}

.impact-metrics-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: calc(var(--grid-unit) * 1.5);
}

.impact-metric-card {
    background: var(--paper-texture);
    border: 1px solid var(--dimension-lines);
    border-radius: 4px;
    padding: calc(var(--grid-unit) * 1.5);
    text-align: center;
    transition: border-color 0.2s ease;
}

.impact-metric-card:hover {
    border-color: var(--annotation-red);
}

.impact-metric-value {
    font-family: var(--font-technical);
    font-size: 1.1rem;
    font-weight: 500;
    color: var(--annotation-red);
    margin-bottom: calc(var(--grid-unit) * 0.5);
}

.impact-metric-label {
    font-size: 0.85rem;
    color: var(--technical-ink);
    font-weight: 400;
}

/* Impact Toggle */
.impact-toggle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: calc(var(--grid-unit) * 1.5);
    background: var(--paper-texture);
    border: 1px solid var(--dimension-lines);
    border-radius: 4px;
    cursor: pointer;
    margin: var(--detail-spacing) 0;
    transition: all 0.2s ease;
}

.impact-toggle:hover {
    border-color: var(--annotation-red);
    background: rgba(201, 74, 60, 0.05);
}

.impact-toggle-text {
    font-family: var(--font-technical);
    font-size: 0.9rem;
    color: var(--technical-ink);
    font-weight: 500;
}

.impact-toggle-indicator {
    font-family: var(--font-technical);
    color: var(--annotation-red);
    font-size: 0.8rem;
    transition: transform 0.2s ease;
}

/* Impact Expandable Content */
.impact-expandable-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.impact-expandable-content.expanded {
    max-height: 2000px;
}

/* ==========================================================================
   IMPACT CARDS FLIP ANIMATION - PERFORMANCE OPTIMIZED
   ========================================================================== */

/* Impact Cards Section */
.impact-cards-section {
    margin: var(--detail-spacing) 0;
    padding: var(--detail-spacing);
    background: var(--paper-texture);
    border: 1px solid var(--dimension-lines);
    border-radius: 4px;
}

/* Cards Container */
.impact-cards-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: calc(var(--grid-unit) * 2);
    margin: var(--detail-spacing) 0;
    perspective: 1000px; /* 3D perspective for flip effect */
}

/* Impact cards in secondary column - single column layout */
.secondary-column .impact-cards-container {
    grid-template-columns: 1fr;
    gap: calc(var(--grid-unit) * 1.5);
    margin: calc(var(--grid-unit) * 1) 0;
}

/* Individual Impact Card */
.impact-card {
    position: relative;
    width: 100%;
    height: 170px;
    cursor: pointer;
    outline: none;
    border-radius: 6px;
    
    /* PERFORMANCE: Prepare for 3D transforms */
    transform-style: preserve-3d;
    will-change: transform;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Card Inner Container */
.card-inner {
    position: relative;
    width: 100%;
    height: 100%;
    transform-style: preserve-3d;
    transition: transform 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

/* Flip Animation Triggers */
.impact-card:hover .card-inner,
.impact-card:focus .card-inner,
.impact-card.flipped .card-inner {
    transform: rotateY(180deg);
}

/* Card Front and Back Faces */
.card-front,
.card-back {
    position: absolute;
    width: 100%;
    height: 100%;
    border-radius: 6px;
    border: 1px solid var(--dimension-lines);
    backface-visibility: hidden; /* PERFORMANCE: Hide back face during rotation */
    
    /* PERFORMANCE: Hardware acceleration */
    transform: translateZ(0);
    -webkit-backface-visibility: hidden;
}

/* Card Front */
.card-front {
    background: linear-gradient(135deg, var(--paper-texture) 0%, rgba(249, 248, 246, 0.95) 100%);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.card-front-content {
    text-align: center;
    padding: var(--detail-spacing);
}

.impact-metric-value {
    font-family: var(--font-technical);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--annotation-red);
    line-height: 1;
    margin-bottom: calc(var(--grid-unit) * 0.5);
}

.impact-metric-label {
    font-family: var(--font-technical);
    font-size: 0.9rem;
    color: var(--technical-ink);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Card Back */
.card-back {
    background: linear-gradient(135deg, rgba(249, 248, 246, 0.98) 0%, var(--paper-texture) 100%);
    transform: rotateY(180deg);
    padding: calc(var(--grid-unit) * 1.5);
    overflow-y: auto;
    z-index: 1;
}

.card-back-content {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.card-back-header {
    display: flex;
    align-items: center;
    gap: calc(var(--grid-unit) * 0.75);
    margin-bottom: calc(var(--grid-unit) * 1);
    padding-bottom: calc(var(--grid-unit) * 0.5);
    border-bottom: 1px solid var(--dimension-lines);
}

.card-code {
    font-family: var(--font-technical);
    font-size: 0.7rem;
    color: var(--annotation-red);
    background: rgba(201, 74, 60, 0.1);
    padding: 2px 6px;
    border-radius: 3px;
    font-weight: 600;
}

.card-title {
    font-family: var(--font-technical);
    font-size: 1rem;
    color: var(--technical-ink);
    font-weight: 600;
    margin: 0;
}

.card-back-text {
    flex: 1;
    font-family: var(--font-body);
    font-size: 0.8rem;
    line-height: 1.4;
    color: var(--technical-ink);
}

.card-back-text p {
    margin: 0 0 calc(var(--grid-unit) * 0.75) 0;
}

.card-back-text strong {
    color: var(--annotation-red);
    font-weight: 600;
}

/* Enhanced Impact Card States */
.card-back-summary {
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 1);
    flex: 1;
}

.card-back-detailed {
    display: flex;
    flex-direction: column;
    gap: calc(var(--grid-unit) * 1);
    flex: 1;
    animation: fadeIn 0.3s ease-out;
}

.impact-summary {
    font-family: var(--font-body);
    font-size: 0.85rem;
    line-height: 1.45;
    color: var(--technical-ink);
    margin: 0;
    font-weight: 500;
}

.expand-details, .collapse-details {
    background: linear-gradient(135deg, var(--blueprint-blue) 0%, rgba(46, 89, 132, 0.9) 100%);
    color: var(--paper-texture);
    border: none;
    padding: calc(var(--grid-unit) * 0.5) calc(var(--grid-unit) * 1);
    border-radius: 4px;
    font-family: var(--font-technical);
    font-size: 0.7rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: calc(var(--grid-unit) * 0.5);
    transition: all 0.2s ease;
    margin-top: auto;
    min-height: 32px;
}

.expand-details:hover, .collapse-details:hover {
    background: linear-gradient(135deg, rgba(46, 89, 132, 0.9) 0%, var(--blueprint-blue) 100%);
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(46, 89, 132, 0.2);
}

.expand-details:focus, .collapse-details:focus {
    outline: 2px solid var(--annotation-red);
    outline-offset: 2px;
}

.expand-details:active, .collapse-details:active {
    transform: translateY(0);
    box-shadow: 0 1px 4px rgba(46, 89, 132, 0.2);
}

.expand-icon, .collapse-icon {
    font-size: 0.6rem;
    transition: transform 0.2s ease;
}

.expand-details:hover .expand-icon {
    transform: translateY(1px);
}

.collapse-details:hover .collapse-icon {
    transform: translateY(-1px);
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mission Statement - Enhanced prominence */
.impact-mission {
    margin-top: calc(var(--detail-spacing) * 1.5);
    padding: calc(var(--detail-spacing) * 1.25);
    background: linear-gradient(135deg, rgba(46, 89, 132, 0.04) 0%, rgba(201, 74, 60, 0.03) 100%);
    border: 2px solid var(--blueprint-blue);
    border-radius: 6px;
    position: relative;
    box-shadow: 0 2px 12px rgba(46, 89, 132, 0.1);
}

.impact-mission::before {
    content: '';
    position: absolute;
    top: -1px;
    left: -1px;
    right: -1px;
    bottom: -1px;
    background: linear-gradient(45deg, var(--blueprint-blue), var(--annotation-red));
    border-radius: 6px;
    z-index: -1;
    opacity: 0.8;
}

.mission-content p {
    font-family: var(--font-technical);
    font-size: 0.9rem;
    line-height: 1.5;
    color: var(--technical-ink);
    margin: 0;
    font-style: italic;
}

.mission-content strong {
    color: var(--annotation-red);
    font-weight: 600;
    font-style: normal;
}

/* ==========================================================================
   ACCESSIBILITY & KEYBOARD NAVIGATION
   ========================================================================== */

/* Focus States */
.impact-card:focus {
    outline: 2px solid var(--annotation-red);
    outline-offset: 2px;
}

.impact-card:focus .card-front {
    border-color: var(--annotation-red);
    box-shadow: 0 0 0 2px rgba(201, 74, 60, 0.1);
}

/* ==========================================================================
   MOBILE RESPONSIVENESS
   ========================================================================== */

@media (max-width: 768px) {
    .impact-cards-container {
        grid-template-columns: 1fr;
        gap: var(--grid-unit);
    }
    
    .impact-card {
        height: 150px;
    }
    
    .impact-metric-value {
        font-size: 1.5rem;
    }
    
    .card-back {
        padding: var(--grid-unit);
    }
    
    .card-back-text {
        font-size: 0.75rem;
        line-height: 1.35;
    }
    
    .impact-summary {
        font-size: 0.8rem;
        line-height: 1.4;
    }
    
    .expand-details, .collapse-details {
        padding: calc(var(--grid-unit) * 0.4) calc(var(--grid-unit) * 0.8);
        font-size: 0.65rem;
        min-height: 28px;
    }
}

/* ==========================================================================
   REDUCED MOTION ACCESSIBILITY
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
    .impact-card,
    .card-inner {
        transition: none;
    }
    
    /* Alternative presentation for reduced motion */
    .impact-card:hover .card-front {
        opacity: 0.7;
        transform: scale(0.98);
    }
    
    .impact-card:hover .card-back {
        position: static;
        transform: none;
        opacity: 1;
        z-index: 3;
        margin-top: calc(var(--grid-unit) * -1);
        border-top: 2px solid var(--annotation-red);
    }
}

.impact-content-grid {
    padding: var(--detail-spacing);
    background: var(--paper-texture);
    border: 1px solid var(--grid-lines);
    border-top: none;
    border-radius: 0 0 4px 4px;
}

.impact-section {
    margin-bottom: calc(var(--detail-spacing) * 1.5);
    padding-bottom: calc(var(--detail-spacing) * 1.5);
    border-bottom: 1px solid var(--grid-lines);
}

.impact-section:last-child {
    border-bottom: none;
    margin-bottom: 0;
    padding-bottom: 0;
}

.impact-section-header {
    display: flex;
    align-items: center;
    margin-bottom: var(--grid-unit);
    gap: calc(var(--grid-unit) * 1.5);
}

.impact-section-code {
    font-family: var(--font-technical);
    font-size: 0.75rem;
    color: var(--annotation-red);
    background: rgba(201, 74, 60, 0.1);
    padding: calc(var(--grid-unit) * 0.5) var(--grid-unit);
    border-radius: 3px;
    border: 1px solid var(--annotation-red);
    min-width: 60px;
    text-align: center;
}

.impact-section-title {
    font-family: var(--font-technical);
    font-size: 1rem;
    color: var(--technical-ink);
    font-weight: 500;
    margin: 0;
}

.impact-section-content {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--technical-ink);
}

.impact-section-content p {
    margin: 0 0 var(--grid-unit) 0;
}

.impact-section-content p:last-child {
    margin-bottom: 0;
}

/* Impact Stakes Special Styling */
.impact-stakes {
    background: rgba(201, 74, 60, 0.05);
    border: 1px solid var(--annotation-red);
    border-radius: 4px;
    padding: var(--detail-spacing);
    margin-top: var(--detail-spacing);
}

.stakes-header {
    display: flex;
    align-items: center;
    margin-bottom: var(--grid-unit);
    gap: calc(var(--grid-unit) * 1.5);
}

.stakes-code {
    font-family: var(--font-technical);
    font-size: 0.75rem;
    color: var(--annotation-red);
    background: var(--drawing-paper);
    padding: calc(var(--grid-unit) * 0.5) var(--grid-unit);
    border-radius: 3px;
    border: 1px solid var(--annotation-red);
    font-weight: 500;
}

.stakes-title {
    font-family: var(--font-technical);
    font-size: 1rem;
    color: var(--annotation-red);
    font-weight: 500;
    margin: 0;
}

.stakes-content {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--technical-ink);
}

.stakes-content p {
    margin: 0 0 var(--grid-unit) 0;
}

.stakes-content p:last-child {
    margin-bottom: 0;
}

/* Publication Impact Sections */
.pub-impact-toggle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: calc(var(--grid-unit) * 1.25);
    background: var(--paper-texture);
    border: 1px solid var(--dimension-lines);
    border-radius: 4px;
    cursor: pointer;
    margin-top: var(--detail-spacing);
    transition: all 0.2s ease;
}

.pub-impact-toggle:hover {
    border-color: var(--annotation-red);
    background: rgba(201, 74, 60, 0.05);
}

.pub-impact-toggle-text {
    font-family: var(--font-technical);
    font-size: 0.85rem;
    color: var(--technical-ink);
    font-weight: 500;
}

.pub-impact-toggle-indicator {
    font-family: var(--font-technical);
    color: var(--annotation-red);
    font-size: 0.75rem;
}

.pub-impact-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.pub-impact-content.expanded {
    max-height: 1000px;
}

.pub-impact-grid {
    padding: var(--detail-spacing);
    background: var(--paper-texture);
    border: 1px solid var(--grid-lines);
    border-top: none;
    border-radius: 0 0 4px 4px;
    display: grid;
    gap: calc(var(--detail-spacing) * 1.5);
}

.pub-impact-section {
    padding-bottom: calc(var(--detail-spacing) * 1.5);
    border-bottom: 1px solid var(--grid-lines);
}

.pub-impact-section:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.pub-impact-header {
    display: flex;
    align-items: center;
    margin-bottom: var(--grid-unit);
    gap: calc(var(--grid-unit) * 1.5);
}

.pub-impact-code {
    font-family: var(--font-technical);
    font-size: 0.7rem;
    color: var(--blueprint-blue);
    background: rgba(46, 89, 132, 0.1);
    padding: calc(var(--grid-unit) * 0.5) var(--grid-unit);
    border-radius: 3px;
    border: 1px solid var(--blueprint-blue);
    min-width: 50px;
    text-align: center;
}

.pub-impact-title {
    font-family: var(--font-technical);
    font-size: 0.9rem;
    color: var(--technical-ink);
    font-weight: 500;
    margin: 0;
}

.pub-impact-text {
    font-family: var(--font-body);
    font-size: 0.9rem;
    line-height: 1.6;
    color: var(--technical-ink);
}

.pub-impact-text p {
    margin: 0;
}

/* Platform Impact Sections */
.platform-impact-toggle {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: calc(var(--grid-unit) * 1.5);
    background: var(--paper-texture);
    border: 1px solid var(--dimension-lines);
    border-radius: 4px;
    cursor: pointer;
    margin-top: var(--detail-spacing);
    transition: all 0.2s ease;
}

.platform-impact-toggle:hover {
    border-color: var(--elevation-green);
    background: rgba(90, 124, 101, 0.05);
}

.platform-impact-toggle-text {
    font-family: var(--font-technical);
    font-size: 0.9rem;
    color: var(--technical-ink);
    font-weight: 500;
}

.platform-impact-toggle-indicator {
    font-family: var(--font-technical);
    color: var(--elevation-green);
    font-size: 0.8rem;
}

.platform-impact-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.platform-impact-content.expanded {
    max-height: 2000px;
}

.platform-use-cases {
    padding: var(--detail-spacing);
    background: var(--paper-texture);
    border: 1px solid var(--grid-lines);
    border-top: none;
    border-radius: 0 0 4px 4px;
}

.use-case-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--detail-spacing);
    margin-bottom: calc(var(--detail-spacing) * 1.5);
}

.use-case-card {
    background: var(--drawing-paper);
    border: 1px solid var(--dimension-lines);
    border-radius: 4px;
    padding: calc(var(--detail-spacing) * 1.25);
    transition: all 0.2s ease;
}

.use-case-card:hover {
    border-color: var(--elevation-green);
    box-shadow: 0 2px 8px rgba(90, 124, 101, 0.1);
}

.use-case-header {
    display: flex;
    align-items: center;
    margin-bottom: var(--grid-unit);
    gap: calc(var(--grid-unit) * 1.5);
}

.use-case-icon {
    font-size: 1.2rem;
}

.use-case-title {
    font-family: var(--font-technical);
    font-size: 0.9rem;
    color: var(--technical-ink);
    font-weight: 500;
    margin: 0;
}

.use-case-content {
    font-family: var(--font-body);
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--technical-ink);
}

.use-case-content p {
    margin: 0;
}

/* Platform Impact Stats */
.platform-impact-stats {
    border-top: 1px solid var(--grid-lines);
    padding-top: var(--detail-spacing);
}

.impact-stats-header {
    display: flex;
    align-items: center;
    margin-bottom: var(--grid-unit);
    gap: calc(var(--grid-unit) * 1.5);
}

.stats-code {
    font-family: var(--font-technical);
    font-size: 0.75rem;
    color: var(--elevation-green);
    background: rgba(90, 124, 101, 0.1);
    padding: calc(var(--grid-unit) * 0.5) var(--grid-unit);
    border-radius: 3px;
    border: 1px solid var(--elevation-green);
    font-weight: 500;
}

.stats-title {
    font-family: var(--font-technical);
    font-size: 0.9rem;
    color: var(--technical-ink);
    font-weight: 500;
    margin: 0;
}

.impact-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: calc(var(--grid-unit) * 1.5);
}

.impact-stat {
    text-align: center;
    padding: calc(var(--grid-unit) * 1.25);
    background: rgba(90, 124, 101, 0.05);
    border: 1px solid var(--elevation-green);
    border-radius: 4px;
}

.stat-value {
    font-family: var(--font-technical);
    font-size: 1rem;
    font-weight: 500;
    color: var(--elevation-green);
    margin-bottom: calc(var(--grid-unit) * 0.5);
}

.stat-label {
    font-family: var(--font-technical);
    font-size: 0.75rem;
    color: var(--technical-ink);
}

/* ==========================================================================
   RESPONSIVE ARCHITECTURAL DESIGN
   ========================================================================== */

@media (max-width: 768px) {
    .container {
        padding: 0 calc(var(--grid-unit) * 2);
    }
    
    .container::before {
        display: none; /* Hide border frame on mobile */
    }
    
    .navigation {
        flex-direction: column;
        gap: 0;
    }
    
    .navigation a {
        padding: calc(var(--grid-unit) * 2) calc(var(--grid-unit) * 2);
        border-right: none;
        border-bottom: 1px solid var(--grid-lines);
    }
    
    .navigation a:last-child {
        border-bottom: none;
    }
    
    .header {
        padding: calc(var(--grid-unit) * 4) 0 calc(var(--grid-unit) * 3) 0;
    }
    
    /* Compact Hero Mobile Layout */
    .hero-compact {
        height: auto;
        min-height: 50vh;
        padding: calc(var(--grid-unit) * 3) 0;
    }
    
    .hero-grid {
        grid-template-columns: 1fr;
        grid-template-rows: auto auto auto;
        gap: calc(var(--grid-unit) * 3);
        text-align: center;
        padding: 0 calc(var(--grid-unit) * 2);
    }
    
    .identity-block {
        order: 1;
    }
    
    .metrics-dashboard {
        order: 2;
        grid-template-columns: 1fr 1fr;
        gap: calc(var(--grid-unit) * 1.5);
        padding: calc(var(--grid-unit));
    }
    
    .metric-card.primary {
        grid-column: 1 / -1;
    }
    
    .quick-access {
        order: 3;
        gap: calc(var(--grid-unit) * 1.5);
    }
    
    .research-pillars {
        flex-direction: row;
        flex-wrap: wrap;
        justify-content: center;
        gap: calc(var(--grid-unit) / 2);
    }
    
    .pillar-tag {
        flex: 1;
        min-width: fit-content;
        font-size: 0.6rem;
        padding: calc(var(--grid-unit) / 2) calc(var(--grid-unit) / 1.5);
    }
    
    .action-buttons {
        flex-direction: column;
        gap: calc(var(--grid-unit));
    }
    
    .headshot-compact {
        width: 70px !important;
        height: 70px !important;
    }
    
    .identity-text .name {
        font-size: 1.8rem;
    }
    
    .tagline {
        font-size: 0.9rem;
    }
    
    .subtitle {
        font-size: 0.8rem;
    }
    
    /* Mobile responsive header layout - Legacy support */
    .header-content {
        grid-template-columns: 1fr;
        grid-template-areas: 
            "text"
            "photo"
            "social";
        gap: calc(var(--grid-unit) * 2);
        text-align: center;
    }
    
    .header-photo {
        justify-self: center;
    }
    
    .headshot {
        width: 120px;
        height: 120px;
    }
    
    /* Mobile responsive social links */
    .social-links {
        justify-content: center;
        gap: calc(var(--grid-unit) * 1);
    }
    
    .social-link {
        padding: 6px 10px;
        font-size: 0.75rem;
    }
    
    .social-icon {
        font-size: 0.9rem;
    }
    
    h1 {
        font-size: 2rem;
    }
    
    h2 {
        font-size: 1.5rem;
    }
    
    .project-list {
        grid-template-columns: 1fr;
    }
    
    .research-areas {
        grid-template-columns: 1fr;
    }
    
    .publication-links,
    .project-links {
        flex-direction: column;
        gap: calc(var(--grid-unit) * 1);
    }
    
    .publication h3,
    .project h3 {
        padding-right: 60px; /* Smaller space for drawing numbers */
    }
    
    /* Mobile responsiveness for publication categories */
    .filter-controls {
        flex-direction: column;
        gap: calc(var(--grid-unit) * 1);
    }
    
    .filter-btn {
        padding: calc(var(--grid-unit) * 1.5) calc(var(--grid-unit) * 2);
        text-align: center;
    }
    
    .category-header {
        padding: calc(var(--grid-unit) * 2);
    }
    
    .category-title {
        font-size: 1.1rem;
    }
    
    .publication-tags {
        gap: calc(var(--grid-unit) * 0.5);
    }
    
    .tag {
        font-size: 0.65rem;
    }
}

@media (max-width: 480px) {
    body {
        background-size: 150px 150px, 36px 36px; /* Smaller patterns on mobile */
    }
    
    /* Ultra-compact hero for small screens */
    .hero-compact {
        padding: calc(var(--grid-unit) * 2) 0;
        min-height: 40vh;
    }
    
    .hero-grid {
        gap: calc(var(--grid-unit) * 2);
        padding: 0 calc(var(--grid-unit));
    }
    
    .metrics-dashboard {
        grid-template-columns: 1fr;
        gap: calc(var(--grid-unit));
        padding: calc(var(--grid-unit) / 2);
    }
    
    .metric-card {
        padding: calc(var(--grid-unit) * 1.5);
    }
    
    .metric-number {
        font-size: 2rem;
    }
    
    .metric-card.primary .metric-number {
        font-size: 2.5rem;
    }
    
    .metric-label {
        font-size: 0.7rem;
    }
    
    .research-pillars {
        gap: calc(var(--grid-unit) / 4);
    }
    
    .pillar-tag {
        font-size: 0.55rem;
        padding: calc(var(--grid-unit) / 3) calc(var(--grid-unit) / 2);
    }
    
    .btn-primary, .btn-secondary {
        padding: calc(var(--grid-unit)) calc(var(--grid-unit) * 1.5);
        font-size: 0.7rem;
    }
    
    .headshot-compact {
        width: 60px !important;
        height: 60px !important;
    }
    
    h1 {
        font-size: 1.8rem;
        letter-spacing: 1px;
    }
    
    h2 {
        font-size: 1.3rem;
        letter-spacing: 1px;
    }
    
    h3 {
        font-size: 1.1rem;
    }
    
    .navigation a {
        font-size: 0.8rem;
    }
    
    .publication,
    .project {
        padding: calc(var(--grid-unit) * 3);
    }
    
    .header::after,
    .publication::before,
    .project::after {
        font-size: 0.7rem; /* Smaller technical annotations on mobile */
    }
    
    /* Very small mobile social links */
    .social-links {
        flex-direction: column;
        align-items: center;
        gap: 8px;
    }
    
    .social-link {
        width: 100%;
        max-width: 200px;
        justify-content: center;
        padding: 8px 12px;
    }
}

/* ==========================================================================
   PRINT STYLES
   ========================================================================== */

@media print {
    body {
        background: white !important;
        color: black !important;
        font-size: 11pt;
        line-height: 1.4;
    }
    
    .container {
        max-width: none;
        padding: 24px;
    }
    
    .container::before {
        border-color: #ccc !important;
    }
    
    .navigation {
        display: none;
    }
    
    .publication-link,
    .project-link {
        display: none;
    }
    
    .footer::before {
        display: none;
    }
    
    h1, h2, h3, h4 {
        page-break-after: avoid;
        color: black !important;
    }
    
    h1::after,
    h2::after {
        background: #666 !important;
    }
    
    .section {
        page-break-inside: avoid;
    }
    
    .publication,
    .project {
        border-color: #ccc !important;
        box-shadow: none !important;
        page-break-inside: avoid;
    }
    
    .publication::before,
    .project::after {
        color: #666 !important;
        background: white !important;
    }
}

/* ==========================================================================
   PROJECT WEBSITE PREVIEWS
   ========================================================================== */

.project-preview {
    margin-top: calc(var(--grid-unit) * 2);
    border: 1px solid var(--grid-lines);
    border-radius: 4px;
    overflow: hidden;
    background: var(--drawing-paper);
    position: relative;
    height: 400px; /* Back to reasonable container size */
    width: 100%;
}

.project-preview::before {
    content: 'LIVE PREVIEW';
    position: absolute;
    top: -8px;
    left: 16px;
    background: var(--drawing-paper);
    padding: 0 8px;
    font-family: var(--font-annotations);
    font-size: var(--technical-note);
    color: var(--dimension-lines);
    text-transform: uppercase;
    letter-spacing: 1px;
    z-index: 10;
}

.preview-header {
    background: var(--paper-texture);
    padding: 8px 16px;
    border-bottom: 1px solid var(--grid-lines);
    display: flex;
    align-items: center;
    gap: 8px;
    font-family: var(--font-annotations);
    font-size: 0.8rem;
    color: var(--dimension-lines);
    position: relative;
    z-index: 10;
}

.preview-controls {
    display: flex;
    gap: 4px;
    margin-right: auto;
}

.preview-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--grid-lines);
}

.preview-dot.red { background: var(--annotation-red); }
.preview-dot.orange { background: var(--construction-orange); }
.preview-dot.green { background: var(--elevation-green); }

.preview-url {
    font-family: var(--font-technical);
    font-size: 0.75rem;
    color: var(--blueprint-blue);
}

.preview-iframe {
    width: 135%; /* Make iframe bigger so website thinks it's on larger screen */
    height: 135%; /* Make iframe bigger so website thinks it's on larger screen */
    border: none;
    background: white;
    display: block;
    transform: scale(0.74); /* Scale down to fit - shows more zoomed out content */
    transform-origin: top left;
    position: absolute;
    top: 0;
    left: 0;
}

.preview-fallback {
    padding: calc(var(--grid-unit) * 3);
    text-align: center;
    color: var(--dimension-lines);
    font-family: var(--font-annotations);
    font-size: 0.9rem;
    background: repeating-linear-gradient(
        45deg,
        transparent,
        transparent 10px,
        var(--grid-lines) 10px,
        var(--grid-lines) 11px
    );
    min-height: 200px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 16px;
}

.preview-button {
    background: var(--blueprint-blue);
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 3px;
    font-family: var(--font-annotations);
    font-size: 0.8rem;
    cursor: pointer;
    transition: background 0.2s ease;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.preview-button:hover {
    background: var(--draft-blue);
}

.preview-loading {
    padding: calc(var(--grid-unit) * 3);
    text-align: center;
    color: var(--dimension-lines);
    font-family: var(--font-annotations);
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    min-height: 200px;
}

.loading-spinner {
    width: 16px;
    height: 16px;
    border: 2px solid var(--grid-lines);
    border-top: 2px solid var(--blueprint-blue);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Enhanced iframe interaction */
.preview-iframe-container {
    position: relative;
    width: 100%;
    height: 100%;
    overflow: hidden;
}

.preview-iframe-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: transparent;
    z-index: 10;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--blueprint-blue);
    font-family: var(--font-annotations);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.preview-iframe-overlay:hover {
    background: rgba(46, 89, 132, 0.1);
    opacity: 1;
}

.preview-iframe-overlay::after {
    content: 'Click to interact with preview';
}

/* Let iframes use natural sizing within container */

/* Mobile responsiveness for previews */
@media (max-width: 768px) {
    .project-preview {
        height: 350px;
    }
    
    .preview-iframe {
        width: 135%;
        height: 135%;
        transform: scale(0.74);
        transform-origin: top left;
        position: absolute;
        top: 0;
        left: 0;
    }
    
    .project-preview::before {
        font-size: 0.7rem;
        padding: 0 6px;
    }
    
    .preview-header {
        padding: 6px 12px;
        font-size: 0.7rem;
    }
    
    .preview-url {
        font-size: 0.65rem;
    }
}


/* ==========================================================================
   CONTEXTUAL ELEMENTS - HOVER INDICATORS
   ========================================================================== */

/* Production Elements with contextual information */
[data-contextual-info] {
    position: relative;
    transition: 
        background-color 0.15s cubic-bezier(0.4, 0, 0.2, 1),
        transform 0.15s cubic-bezier(0.4, 0, 0.2, 1),
        border-radius 0.15s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: help !important;
    /* PRODUCTION: Prevent layout shifts */
    contain: layout;
    /* PRODUCTION: GPU optimization */
    transform: translateZ(0);
    backface-visibility: hidden;
}

[data-contextual-info]:hover {
    background-color: rgba(46, 89, 132, 0.06) !important;
    border-radius: 4px;
    transform: translateZ(0) translateY(-1px);
    /* PRODUCTION: Temporary will-change for animation */
    will-change: transform, background-color;
}

/* Remove will-change after animation completes */
[data-contextual-info]:not(:hover) {
    will-change: auto;
}

/* Subtle indicator for contextual elements */
[data-contextual-info]::after {
    content: '💡';
    position: absolute;
    top: -2px;
    right: -2px;
    font-size: 0.7rem;
    opacity: 0;
    transition: opacity 0.2s ease;
    pointer-events: none;
    z-index: 10;
}

[data-contextual-info]:hover::after {
    opacity: 0.6;
}

/* Special styling for metric highlights */
.metric-highlight[data-contextual-info] {
    border: 1px dashed transparent;
    transition: all 0.2s ease;
}

.metric-highlight[data-contextual-info]:hover {
    border-color: var(--blueprint-blue);
    box-shadow: 0 2px 8px rgba(46, 89, 132, 0.1);
}

/* ==========================================================================
   PAPER CLIP CONTEXTUAL SIDEBAR - PERFORMANCE OPTIMIZED
   ========================================================================== */

/* Production Paper Clip - Contextual Tooltip */
.paper-clip-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 320px;
    max-height: 400px;
    background: 
        linear-gradient(145deg, #FEFEFE 0%, #F9F9F7 50%, #F5F5F2 100%);
    border: 1.5px solid var(--dimension-lines);
    border-left: 3px solid var(--blueprint-blue);
    border-radius: 8px;
    box-shadow: 
        0 8px 32px rgba(0, 0, 0, 0.12),
        0 2px 8px rgba(46, 89, 132, 0.08);
    /* PRODUCTION: Optimized transitions */
    transition: 
        opacity 0.2s cubic-bezier(0.4, 0, 0.2, 1),
        transform 0.2s cubic-bezier(0.4, 0, 0.2, 1),
        visibility 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 9999;
    cursor: default;
    overflow: hidden;
    /* PRODUCTION: Maximum GPU optimization */
    transform: translate3d(0, 0, 0) scale(1);
    backface-visibility: hidden;
    perspective: 1000px;
    /* PRODUCTION: Aggressive containment */
    contain: layout style paint size;
    /* PRODUCTION: Prevent layout thrashing */
    will-change: auto;
}

.paper-clip-sidebar::before {
    content: '';
    position: absolute;
    top: 8px;
    left: 20px;
    right: 8px;
    bottom: 8px;
    border: 1px solid rgba(46, 89, 132, 0.15);
    border-radius: 12px 3px 3px 12px;
    background: 
        linear-gradient(90deg, 
            rgba(46, 89, 132, 0.02) 0%, 
            rgba(46, 89, 132, 0.06) 30%, 
            rgba(46, 89, 132, 0.02) 100%);
}

/* Elegant paper clip icon using CSS */
.paper-clip-sidebar::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 12px;
    width: 16px;
    height: 20px;
    transform: translateY(-50%);
    border: 2px solid var(--blueprint-blue);
    border-radius: 8px 8px 3px 3px;
    background: transparent;
    opacity: 0.7;
    transition: all 0.3s ease;
}

/* Inner curve of paper clip */
.paper-clip-sidebar:before {
    content: '';
    position: absolute;
    top: 50%;
    left: 14px;
    width: 12px;
    height: 8px;
    transform: translateY(-50%);
    border: 1.5px solid var(--blueprint-blue);
    border-top: none;
    border-radius: 0 0 6px 6px;
    background: transparent;
    opacity: 0.5;
    z-index: 1;
}

.paper-clip-sidebar:hover {
    width: 115px;
    height: 40px;
    transform: translateX(-2px);
    box-shadow: 
        0 4px 16px rgba(46, 89, 132, 0.12),
        0 6px 24px rgba(46, 89, 132, 0.06),
        inset 0 1px 3px rgba(255, 255, 255, 0.95);
}

.paper-clip-sidebar:hover::after {
    opacity: 0.9;
    border-color: var(--draft-blue);
}

.paper-clip-sidebar.auto-opened {
    right: -10px;
    width: 280px;
    height: auto;
    min-height: 120px;
    max-height: 280px;
    border-radius: 16px 4px 4px 16px;
    border-left: 3px solid var(--blueprint-blue);
    box-shadow: 
        -2px 4px 20px rgba(46, 89, 132, 0.15),
        inset 1px 1px 4px rgba(255, 255, 255, 0.8);
}

.paper-clip-sidebar.expanded {
    right: -15px;
    width: 340px;
    height: auto;
    min-height: 200px;
    max-height: 450px;
    border-radius: 18px 6px 6px 18px;
    border-left: 4px solid var(--construction-orange);
    box-shadow: 
        -4px 6px 28px rgba(46, 89, 132, 0.2),
        inset 2px 2px 6px rgba(255, 255, 255, 0.9);
}

.paper-clip-sidebar.expanded::after,
.paper-clip-sidebar.auto-opened::after {
    display: none;
}

.clip-content {
    opacity: 1;
    padding: calc(var(--grid-unit) * 1.5);
    height: auto;
    overflow: hidden;
    transition: opacity 0.15s ease-out, transform 0.15s ease-out;
    background: rgba(254, 253, 251, 0.98);
    backdrop-filter: blur(8px);
    border-radius: 15px 4px 4px 15px;
    /* PERFORMANCE: GPU acceleration */
    transform: var(--gpu-transform);
    contain: layout style paint;
    will-change: opacity, transform;
}

.paper-clip-sidebar.expanded .clip-content,
.paper-clip-sidebar.auto-opened .clip-content {
    opacity: 1;
    padding: calc(var(--grid-unit) * 2.5);
    height: auto;
    overflow-y: auto;
    border-radius: 0 0 14px 14px;
}

.clip-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: calc(var(--grid-unit) * -0.5) calc(var(--grid-unit) * -0.5) calc(var(--grid-unit) * 2) calc(var(--grid-unit) * -0.5);
    padding: calc(var(--grid-unit) * 1.5);
    background: linear-gradient(90deg, 
        rgba(46, 89, 132, 0.08) 0%, 
        rgba(46, 89, 132, 0.04) 100%);
    border-bottom: 2px solid var(--grid-lines);
    border-radius: 12px 0 0 0;
}

.clip-header h4 {
    font-family: var(--font-technical);
    font-size: 1rem;
    color: var(--blueprint-blue);
    text-transform: uppercase;
    letter-spacing: 1.2px;
    margin: 0;
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(46, 89, 132, 0.1);
}

.clip-close {
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid var(--grid-lines);
    font-size: 1.1rem;
    color: var(--dimension-lines);
    cursor: pointer;
    padding: 6px 8px;
    transition: background-color 0.2s ease-out, color 0.2s ease-out, border-color 0.2s ease-out, transform 0.2s ease-out;
    border-radius: 6px;
    backdrop-filter: blur(4px);
    line-height: 1;
    /* PERFORMANCE: GPU acceleration */
    transform: var(--gpu-transform);
    will-change: transform;
}

.clip-close:hover {
    background: var(--annotation-red);
    color: var(--drawing-paper);
    border-color: var(--annotation-red);
    transform: translate3d(0, 0, 0) scale(1.1);
}

.clip-section {
    margin-bottom: calc(var(--grid-unit) * 2.5);
    padding: calc(var(--grid-unit) * 1.5);
    background: rgba(255, 255, 255, 0.6);
    border: 1px solid var(--grid-lines);
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(46, 89, 132, 0.08);
    transition: transform 0.2s ease-out, box-shadow 0.2s ease-out, border-color 0.2s ease-out;
    /* PERFORMANCE: GPU acceleration */
    transform: var(--gpu-transform);
    contain: layout style;
    will-change: transform;
}

.clip-section:hover {
    background: rgba(255, 255, 255, 0.8);
    border-color: var(--blueprint-blue);
    transform: translate3d(0, -1px, 0);
    box-shadow: 0 4px 12px rgba(46, 89, 132, 0.12);
}

/* Mobile Responsiveness for Impact Sections */
@media (max-width: 768px) {
    .impact-metrics-grid {
        grid-template-columns: 1fr;
        gap: var(--grid-unit);
    }
    
    .impact-metric-card {
        padding: var(--grid-unit);
    }
    
    .use-case-grid {
        grid-template-columns: 1fr;
        gap: calc(var(--grid-unit) * 1.5);
    }
    
    .impact-stats-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: var(--grid-unit);
    }
    
    .impact-section-header,
    .pub-impact-header,
    .stakes-header,
    .impact-stats-header {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--grid-unit);
    }
    
    .impact-section-code,
    .pub-impact-code,
    .stakes-code,
    .stats-code {
        align-self: flex-start;
    }
    
    .impact-toggle,
    .pub-impact-toggle,
    .platform-impact-toggle {
        padding: calc(var(--grid-unit) * 1.25);
    }
    
    .impact-toggle-text,
    .pub-impact-toggle-text,
    .platform-impact-toggle-text {
        font-size: 0.85rem;
    }
}

.clip-section:last-child {
    margin-bottom: 0;
}

.clip-section h5 {
    font-family: var(--font-technical);
    font-size: 0.8rem;
    color: var(--construction-orange);
    text-transform: uppercase;
    letter-spacing: 0.8px;
    margin-bottom: calc(var(--grid-unit) * 1);
    display: flex;
    align-items: center;
    font-weight: 500;
    text-shadow: 0 1px 2px rgba(209, 122, 71, 0.2);
}

.clip-section h5::before {
    content: '◆';
    margin-right: 8px;
    font-size: 0.7rem;
    color: var(--blueprint-blue);
}

.clip-section-content {
    font-size: 0.85rem;
    line-height: 1.6;
    color: var(--technical-ink);
    font-family: var(--font-body);
    text-align: left;
}

.clip-section-content strong {
    color: var(--blueprint-blue);
    font-weight: 500;
}

.clip-section-content em {
    color: var(--construction-orange);
    font-style: normal;
    font-weight: 500;
}

.bullet-point {
    margin: calc(var(--grid-unit) * 0.5) 0;
    padding-left: calc(var(--grid-unit) * 1);
    color: var(--technical-ink);
    position: relative;
}

.bullet-point:before {
    content: '◆';
    position: absolute;
    left: 0;
    color: var(--blueprint-blue);
    font-size: 0.7rem;
}

/* ==========================================================================
   DETAIL LEVEL CONTROLS & LAYERED REVEAL
   ========================================================================== */

.detail-controls {
    margin-bottom: calc(var(--grid-unit) * 4);
    background: var(--paper-texture);
    border: 1px solid var(--grid-lines);
    border-radius: 6px;
    padding: calc(var(--grid-unit) * 2);
    position: relative;
}

.detail-controls::before {
    content: 'DETAIL LEVEL';
    position: absolute;
    top: -8px;
    left: 16px;
    background: var(--drawing-paper);
    padding: 0 8px;
    font-family: var(--font-annotations);
    font-size: var(--technical-note);
    color: var(--dimension-lines);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.zoom-controls {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.zoom-btn {
    background: var(--drawing-paper);
    border: 1px solid var(--dimension-lines);
    color: var(--blueprint-blue);
    padding: 8px 16px;
    border-radius: 4px;
    font-family: var(--font-annotations);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all var(--drawing-transition);
    position: relative;
}

.zoom-btn:hover {
    background: var(--blueprint-blue);
    color: var(--drawing-paper);
    transform: translateY(-2px);
}

.zoom-btn.active {
    background: var(--draft-blue);
    color: var(--drawing-paper);
    border-color: var(--draft-blue);
}

/* Different detail levels */
.detail-level-overview .publication .description,
.detail-level-overview .publication .methodology-notes {
    display: block;
}

.detail-level-overview .publication {
    padding: calc(var(--grid-unit) * 2);
}

.detail-level-category .publication .methodology-notes {
    display: block;
}

.detail-level-deep .publication .methodology-notes {
    display: block !important;
    margin-top: calc(var(--grid-unit) * 2);
    padding: calc(var(--grid-unit) * 2);
    background: var(--paper-texture);
    border-radius: 4px;
    border-left: 3px solid var(--construction-orange);
}


/* ==========================================================================
   MOBILE SWIPE NAVIGATION
   ========================================================================== */

.mobile-swipe-container {
    display: none;
    margin-bottom: calc(var(--grid-unit) * 4);
    position: relative;
}

.swipe-indicators {
    display: flex;
    justify-content: center;
    gap: 8px;
    margin-bottom: 16px;
}

.swipe-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--grid-lines);
    cursor: pointer;
    transition: all 0.3s ease;
}

.swipe-dot.active {
    background: var(--blueprint-blue);
    transform: scale(1.2);
}

.swipe-cards {
    display: flex;
    overflow-x: hidden;
    scroll-snap-type: x mandatory;
    -webkit-overflow-scrolling: touch;
    gap: 16px;
}

.swipe-card {
    min-width: 100%;
    background: var(--paper-texture);
    border: 1px solid var(--grid-lines);
    border-radius: 8px;
    padding: calc(var(--grid-unit) * 4);
    text-align: center;
    scroll-snap-align: center;
    transition: transform 0.3s ease;
    position: relative;
}

.swipe-card:not(.active) {
    transform: translateX(100%);
    opacity: 0;
}

.swipe-card h3 {
    margin-bottom: calc(var(--grid-unit) * 2);
    color: var(--blueprint-blue);
    font-size: 1.2rem;
}

.swipe-card p {
    margin-bottom: calc(var(--grid-unit) * 3);
    color: var(--dimension-lines);
    font-size: 0.9rem;
}

.swipe-explore-btn {
    background: var(--blueprint-blue);
    color: var(--drawing-paper);
    border: none;
    padding: 12px 24px;
    border-radius: 4px;
    font-family: var(--font-annotations);
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    cursor: pointer;
    transition: all var(--drawing-transition);
}

.swipe-explore-btn:hover {
    background: var(--draft-blue);
    transform: translateY(-2px);
}

/* ==========================================================================
   BLUEPRINT ANIMATIONS - PERFORMANCE OPTIMIZED
   ========================================================================== */

/* PERFORMANCE: Single keyframe for all fade animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* PERFORMANCE: Use classes instead of multiple animations */
.blueprint-animate {
    animation: fadeIn 0.6s cubic-bezier(0.4, 0, 0.2, 1) forwards;
}

.publication:hover {
    transform: translateY(-4px) rotate(0.5deg);
    box-shadow: 0 8px 25px rgba(46, 89, 132, 0.15);
}


/* ==========================================================================
   RESEARCH TOPIC EXPLORATION OVERLAY
   ========================================================================== */

.research-topic-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 10000;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.research-topic-overlay.active {
    opacity: 1;
    visibility: visible;
}

.research-topic-overlay .overlay-content {
    background: var(--drawing-paper);
    border: 3px solid var(--construction-orange);
    border-radius: 12px;
    padding: calc(var(--grid-unit) * 6);
    max-width: 600px;
    width: 90%;
    position: relative;
    transform: scale(0.8) translateY(30px);
    transition: transform 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.research-topic-overlay.active .overlay-content {
    transform: scale(1) translateY(0);
}

.overlay-header {
    text-align: center;
    margin-bottom: calc(var(--grid-unit) * 4);
}

.overlay-header h3 {
    font-family: var(--font-annotations);
    font-size: 0.9rem;
    color: var(--dimension-lines);
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: calc(var(--grid-unit) * 1);
}

.topic-name {
    font-family: var(--font-technical);
    font-size: 1.8rem;
    color: var(--construction-orange);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.overlay-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: calc(var(--grid-unit) * 3);
    margin-bottom: calc(var(--grid-unit) * 4);
    text-align: center;
}

.overlay-stats .stat {
    background: var(--paper-texture);
    border: 1px solid var(--grid-lines);
    border-radius: 6px;
    padding: calc(var(--grid-unit) * 2);
    transition: all 0.3s ease;
}

.overlay-stats .stat:hover {
    border-color: var(--construction-orange);
    transform: translateY(-2px);
}

.stat-number {
    display: block;
    font-family: var(--font-technical);
    font-size: 1.8rem;
    color: var(--construction-orange);
    font-weight: 500;
    margin-bottom: 4px;
}

.stat-label {
    font-family: var(--font-annotations);
    font-size: 0.8rem;
    color: var(--dimension-lines);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.overlay-description {
    background: var(--paper-texture);
    border-left: 4px solid var(--construction-orange);
    padding: calc(var(--grid-unit) * 3);
    border-radius: 4px;
    margin-bottom: calc(var(--grid-unit) * 4);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--technical-ink);
}

.overlay-progress {
    width: 100%;
    height: 4px;
    background: var(--grid-lines);
    border-radius: 2px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--construction-orange), var(--annotation-red));
    width: 0%;
    border-radius: 2px;
    animation: progressLoad 2.5s ease-out forwards;
}

@keyframes progressLoad {
    0% { width: 0%; }
    100% { width: 100%; }
}

/* Publication highlighting */
.publication-highlighted {
    border-color: var(--construction-orange) !important;
    background: linear-gradient(135deg, var(--paper-texture) 0%, rgba(209, 122, 71, 0.08) 100%) !important;
    box-shadow: 0 8px 25px rgba(209, 122, 71, 0.2) !important;
    transform: translateY(-2px) !important;
    position: relative;
}

.publication-highlighted::before {
    background: var(--construction-orange) !important;
    color: var(--drawing-paper) !important;
}

.publication-highlighted::after {
    border-color: var(--construction-orange) !important;
}

.publication-highlighted .tag-primary {
    background: var(--construction-orange) !important;
    border-color: var(--construction-orange) !important;
}

/* PERFORMANCE: Simplified pulse animation */
.publication-highlighted {
    animation: publicationPulse 3s ease-in-out;
}

@keyframes publicationPulse {
    0%, 100% { 
        transform: translateY(-2px) scale(1); 
        box-shadow: 0 8px 25px rgba(209, 122, 71, 0.2);
    }
    50% { 
        transform: translateY(-4px) scale(1.02); 
        box-shadow: 0 12px 35px rgba(209, 122, 71, 0.3);
    }
}

/* Mobile responsiveness for overlay */
@media (max-width: 768px) {
    .research-topic-overlay .overlay-content {
        padding: calc(var(--grid-unit) * 4);
        margin: 20px;
    }
    
    .overlay-stats {
        grid-template-columns: 1fr;
        gap: calc(var(--grid-unit) * 2);
    }
    
    .topic-name {
        font-size: 1.4rem;
    }
    
    .stat-number {
        font-size: 1.4rem;
    }
}

/* ==========================================================================
   RESPONSIVE DESIGN FOR NEW FEATURES
   ========================================================================== */

@media (max-width: 768px) {
    .view-controls {
        position: static;
        margin-bottom: calc(var(--grid-unit) * 3);
        justify-content: center;
        flex-wrap: wrap;
    }
    
    .paper-clip-sidebar {
        right: -15px;
        width: 90px;
        height: 32px;
    }
    
    .paper-clip-sidebar:hover {
        width: 100px;
        height: 35px;
    }
    
    .paper-clip-sidebar.auto-opened {
        right: -5px;
        width: calc(100vw - 60px);
        max-width: 280px;
        max-height: 40vh;
    }
    
    .paper-clip-sidebar.expanded {
        right: -10px;
        width: calc(100vw - 40px);
        max-width: 320px;
        max-height: 55vh;
    }
    
    .mobile-swipe-container {
        display: block;
    }
    
    .publications-filter {
        display: none;
    }
    
    .zoom-controls {
        flex-direction: column;
        gap: 4px;
    }
    
    .zoom-btn {
        text-align: center;
    }
    
    .legend-item {
        font-size: 0.7rem;
    }
}

@media (max-width: 480px) {
    .swipe-card {
        padding: calc(var(--grid-unit) * 3);
    }
    
    .sidebar-trigger {
        display: none;
    }
}

/* Mobile Header Adjustments */
@media (max-width: 768px) {
    .header-top {
        padding: calc(var(--grid-unit) * 1);
    }
    
    .navigation {
        width: 100%;
        justify-content: center;
    }
    
    .navigation a {
        font-size: 0.75rem;
        padding: calc(var(--grid-unit) * 0.5) calc(var(--grid-unit) * 0.75);
    }
    
    .header-content {
        padding: calc(var(--grid-unit) * 2);
    }
    
    .header-main {
        flex-direction: column;
        text-align: center;
        gap: calc(var(--grid-unit) * 2);
    }
    
    .header-info {
        align-items: center;
    }
    
    .name {
        font-size: 1.8rem;
    }
    
    .title {
        font-size: 0.85rem;
    }
    
    .social-links {
        justify-content: center;
    }
    
    .headshot {
        width: 120px;
        height: 120px;
    }
    
    .header::after {
        display: none;
    }
}

/* ==========================================================================
   PERFORMANCE-CRITICAL STYLES
   ========================================================================== */

/* Force GPU layers for frequently animated elements */
.paper-clip-sidebar,
.publication,
.project,
.research-area,
.social-link {
    transform: translateZ(0);
    backface-visibility: hidden;
}

/* Optimize font loading */
@font-face {
    font-family: 'et-book';
    font-display: swap; /* Prevent render blocking */
}

/* Reduce paint areas */
.section > * {
    contain: layout style;
}

/* ==========================================================================
   RESEARCH ENHANCEMENT STYLES - HEADER INTEGRATION
   ========================================================================== */

.enhanced-title {
    font-family: var(--font-technical);
    color: var(--technical-ink);
}

.title-subtitle {
    display: block;
    font-size: var(--annotation-size);
    color: var(--blueprint-blue);
    font-family: var(--font-body);
    margin-top: var(--grid-unit);
    font-weight: normal;
    font-style: italic;
}

.quick-metrics {
    display: flex;
    gap: var(--detail-spacing);
    margin: var(--detail-spacing) 0;
    flex-wrap: wrap;
}

.metric-highlight {
    background: var(--metric-background);
    padding: calc(var(--grid-unit)/2) var(--grid-unit);
    border-radius: 4px;
    font-family: var(--font-technical);
    font-size: var(--annotation-size);
    color: var(--blueprint-blue);
    border-left: 3px solid var(--research-accent);
    cursor: pointer;
    transition: var(--drawing-transition);
    transform: translateZ(0); /* GPU optimization */
}

.metric-highlight:hover {
    background: rgba(46, 89, 132, 0.15);
    transform: var(--hover-lift);
}

/* Paper clip integration styles */
.impact-metric {
    margin-bottom: var(--detail-spacing);
    padding: var(--grid-unit);
    background: var(--paper-texture);
    border-left: 3px solid var(--blueprint-blue);
    border-radius: 4px;
}

.metric-number {
    display: block;
    font-family: var(--font-technical);
    font-size: 1.5rem;
    color: var(--blueprint-blue);
    font-weight: 500;
    line-height: 1.2;
}

.metric-label {
    display: block;
    font-family: var(--font-technical);
    font-size: var(--annotation-size);
    color: var(--technical-ink);
    margin-top: calc(var(--grid-unit)/2);
    font-weight: 500;
}

.metric-detail {
    display: block;
    font-size: var(--technical-note);
    color: var(--dimension-lines);
    margin-top: calc(var(--grid-unit)/2);
    line-height: 1.4;
}

/* Responsive adjustments for mobile */
@media (max-width: 768px) {
    .quick-metrics {
        gap: calc(var(--detail-spacing) / 2);
    }
    
    .metric-highlight {
        font-size: var(--technical-note);
        padding: calc(var(--grid-unit)/3) calc(var(--grid-unit)/1.5);
    }
    
    .title-subtitle {
        font-size: var(--technical-note);
    }
}

/* ==========================================================================
   APPLICATIONS SECTION - RESEARCH IMPACT SHOWCASE
   ========================================================================== */

.section-intro {
    font-size: var(--body-text);
    color: var(--dimension-lines);
    text-align: center;
    margin-bottom: var(--section-spacing);
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.application-areas {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--detail-spacing);
    margin-bottom: var(--section-spacing);
}

.application-card {
    background: var(--drawing-paper);
    border: 2px solid var(--grid-lines);
    border-left: 4px solid var(--blueprint-blue);
    border-radius: calc(var(--grid-unit)/2);
    padding: var(--detail-spacing);
    position: relative;
    transition: all var(--drawing-transition);
    cursor: pointer;
    overflow: hidden;
    /* PERFORMANCE: contain layout calculations */
    contain: layout style;
    /* PERFORMANCE: minimal transforms for smooth hover */
    transform: translateZ(0);
}

.application-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: 
        linear-gradient(135deg, 
            rgba(46, 89, 132, 0.02) 0%, 
            rgba(46, 89, 132, 0.06) 50%, 
            rgba(46, 89, 132, 0.02) 100%);
    opacity: 0;
    transition: opacity var(--drawing-transition);
    pointer-events: none;
}

.application-card:hover {
    transform: translateY(-2px);
    border-color: var(--blueprint-blue);
    box-shadow: 
        0 4px 12px rgba(46, 89, 132, 0.08),
        0 8px 24px rgba(46, 89, 132, 0.04);
}

.application-card:hover::before {
    opacity: 1;
}

.app-icon {
    font-size: 2.5rem;
    margin-bottom: calc(var(--grid-unit));
    line-height: 1;
    opacity: 0.8;
}

.application-card h3 {
    font-family: var(--font-technical);
    font-size: var(--subsection-title);
    color: var(--technical-ink);
    margin-bottom: calc(var(--grid-unit));
    font-weight: 500;
    line-height: 1.3;
}

.application-card p {
    font-size: var(--body-text);
    color: var(--technical-ink);
    line-height: 1.6;
    margin-bottom: calc(var(--detail-spacing) / 1.5);
    opacity: 0.9;
}

.app-metrics {
    display: flex;
    flex-wrap: wrap;
    gap: calc(var(--grid-unit) / 2);
    margin-top: calc(var(--detail-spacing) / 2);
}

.app-metric {
    display: inline-block;
    background: var(--metric-background);
    color: var(--blueprint-blue);
    font-family: var(--font-technical);
    font-size: var(--technical-note);
    font-weight: 500;
    padding: calc(var(--grid-unit)/3) calc(var(--grid-unit)/1.5);
    border-radius: calc(var(--grid-unit)/3);
    border: 1px solid rgba(46, 89, 132, 0.1);
    white-space: nowrap;
    transition: all var(--drawing-transition);
}

.app-metric:hover {
    background: rgba(46, 89, 132, 0.12);
    border-color: var(--blueprint-blue);
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .application-areas {
        grid-template-columns: 1fr;
        gap: calc(var(--detail-spacing) / 1.5);
    }
    
    .application-card {
        padding: calc(var(--detail-spacing) * 0.75);
    }
    
    .app-icon {
        font-size: 2rem;
    }
    
    .application-card h3 {
        font-size: 1.1rem;
    }
    
    .application-card p {
        font-size: 0.95rem;
    }
    
    .app-metric {
        font-size: 0.75rem;
        padding: calc(var(--grid-unit)/4) calc(var(--grid-unit));
    }
}


    
    
    
    /* Switch to mobile content layout */
    .desktop-panel-content {
        display: none;
    }
    
    .mobile-panel-content {
        display: block;
    }
    

}

/* Optimize animations for 60fps */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* ==========================================================================
   SIMPLE TOOLTIP SYSTEM
   Lightweight CSS-based tooltips replacing heavy paper clip
   ========================================================================== */

.has-tooltip {
    cursor: help;
    position: relative;
    transition: color 0.2s ease;
}

.has-tooltip:hover {
    color: var(--annotation-red);
}

.simple-tooltip {
    position: fixed !important;
    background: var(--drawing-paper, #ffffff);
    border: 1px solid var(--grid-lines, #cccccc);
    border-radius: 4px;
    padding: 12px 16px;
    max-width: 280px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    z-index: 99999 !important;
    pointer-events: none;
    opacity: 0;
    transform: translateY(-4px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    display: block !important;
    visibility: visible !important;
    
    /* Debug: Temporary high contrast for testing */
    background: #ffff00 !important;
    border: 2px solid #ff0000 !important;
    color: #000000 !important;
    min-width: 200px !important;
    min-height: 50px !important;
}

.simple-tooltip.visible {
    opacity: 1 !important;
    transform: translateY(0) !important;
}

.simple-tooltip .tooltip-header {
    font-weight: 600;
    margin-bottom: 4px;
    color: var(--text-primary);
    font-size: 0.9rem;
}

.simple-tooltip .tooltip-content {
    font-size: 0.85rem;
    line-height: 1.4;
    color: var(--text-secondary);
}

/* Mobile-responsive tooltip styles */
@media (max-width: 768px) {
    .simple-tooltip {
        max-width: 90vw;
        padding: 10px 14px;
        font-size: 0.8rem;
        /* Mobile positioning will be handled by JavaScript */
        transform: translateX(-50%) translateY(-4px);
    }
    
    .simple-tooltip.visible {
        transform: translateX(-50%) translateY(0);
    }
    
    .simple-tooltip .tooltip-header {
        font-size: 0.85rem;
        margin-bottom: 6px;
    }
    
    .simple-tooltip .tooltip-content {
        font-size: 0.8rem;
        line-height: 1.3;
    }
}

/* Touch interaction feedback */
.has-tooltip:active {
    background-color: rgba(46, 89, 132, 0.05);
}

/* Hide the old paper clip sidebar */
#paper-clip-sidebar {
    display: none !important;
}

/* ==========================================================================
   SIMPLIFIED ANIMATIONS
   Replacing complex animation systems with simple CSS
   ========================================================================== */

/* Fade in animation for elements coming into view */
.publication-entry,
.platform-showcase-entry,
.spec-entry {
    opacity: 0;
    transform: translateY(20px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.publication-entry.in-view,
.platform-showcase-entry.in-view,
.spec-entry.in-view {
    opacity: 1;
    transform: translateY(0);
}

/* Header scroll effect */
.header {
    transition: background-color 0.2s ease, box-shadow 0.2s ease;
}

.header.scrolled {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(8px);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

/* ========================= */
/* RESPONSIVE PUBLICATION DISPLAY ENHANCEMENTS */
/* ========================= */

/* Small mobile (up to 480px) */
@media (max-width: 480px) {
    .ultra-pub-title {
        -webkit-line-clamp: 2;
    }
    
    .ultra-authors {
        -webkit-line-clamp: 1;
    }
    
    .ultra-compact-publication {
        min-height: 50px;
    }
}

/* Tablet (481px to 1024px) */
@media (min-width: 481px) and (max-width: 1024px) {
    .ultra-pub-title {
        -webkit-line-clamp: 3;
    }
    
    .ultra-authors {
        -webkit-line-clamp: 2;
    }
    
    .ultra-compact-publication {
        gap: calc(var(--grid-unit) * 1);
        min-height: 70px;
    }
}

/* Desktop (1025px to 1440px) */
@media (min-width: 1025px) and (max-width: 1440px) {
    .ultra-pub-title {
        -webkit-line-clamp: 3;
    }
    
    .ultra-authors {
        -webkit-line-clamp: 2;
    }
    
    .ultra-compact-publication {
        min-height: 70px;
    }
}

/* Large desktop (1441px+) */
@media (min-width: 1441px) {
    .ultra-pub-title {
        -webkit-line-clamp: 4;
    }
    
    .ultra-authors {
        -webkit-line-clamp: 3;
    }
    
    .ultra-compact-publication {
        gap: calc(var(--grid-unit) * 1.25);
        min-height: 80px;
    }
}

/* Override mobile styles for clamp compatibility */
@media (max-width: 768px) {
    .ultra-pub-title {
        font-size: clamp(0.7rem, 0.7rem + 0.3vw, 0.85rem);
    }
    
    .ultra-authors,
    .ultra-venue {
        font-size: clamp(0.55rem, 0.55rem + 0.2vw, 0.65rem);
    }
}