/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* Option 1: Monochromatic Slate - Minimalist & Professional */
    --primary-color: #64748b;
    --primary-dark: #475569;
    --primary-light: #94a3b8;
    --secondary-color: #64748b;
    --accent-color: #22d3ee;
    --navy-dark: #0a0f1a;
    --navy-medium: #1a1f2e;
    --navy-light: #2a2f3e;
    --text-dark: #0a0f1a;
    --text-light: #94a3b8;
    --text-lighter: #cbd5e1;
    --bg-light: #f8fafc;
    --bg-white: #ffffff;
    --border-color: #334155;
    --success-color: #10b981;
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--bg-white);
}

/* Navigation */
#navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: all 0.3s ease;
}

#navbar.scrolled {
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--navy-dark);
}

.nav-links {
    display: flex;
    gap: 2rem;
    align-items: center;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 500;
    transition: color 0.3s ease;
    position: relative;
    display: inline-flex;
    align-items: center;
}

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-color);
    transition: width 0.3s ease;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.nav-links a:hover::after {
    width: 100%;
}

.nav-btn {
    background: rgba(100, 116, 139, 0.1);
    padding: 0.5rem 1rem;
    border-radius: 8px;
    border: 1px solid rgba(100, 116, 139, 0.3);
    transition: all 0.3s ease;
    font-size: 0.9375rem;
}

.nav-btn::after {
    display: none !important;
}

.nav-btn:hover {
    background: rgba(100, 116, 139, 0.2);
    border-color: rgba(100, 116, 139, 0.5);
    color: var(--text-dark);
    transform: translateY(-1px);
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

/* Hero Section */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #0a0f1a 0%, #1a1f2e 50%, #2a2f3e 100%);
    position: relative;
    overflow: hidden;
    padding: 6rem 0 2rem;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg width="80" height="80" xmlns="http://www.w3.org/2000/svg"><defs><pattern id="grid" width="80" height="80" patternUnits="userSpaceOnUse"><path d="M 80 0 L 0 0 0 80" fill="none" stroke="rgba(14,165,233,0.1)" stroke-width="1"/></pattern></defs><rect width="100%" height="100%" fill="url(%23grid)"/></svg>');
    opacity: 0.4;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    color: white;
}

.title {
    font-size: 2.7225rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    letter-spacing: -0.02em;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    line-height: 1.1;
}

.subtitle {
    font-size: 1.21rem;
    font-weight: 300;
    margin-bottom: 0.75rem;
    opacity: 0.9;
    line-height: 1.3;
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.authors {
    font-size: 1.134375rem;
    margin-bottom: 0.25rem;
    opacity: 0.85;
    font-weight: 300;
}

.author {
    display: inline-block;
    margin: 0 0.35rem;
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
}

.author:hover {
    color: var(--primary-light);
    text-decoration: none;
}

.author::after {
    content: '•';
    margin-left: 0.75rem;
    opacity: 0.5;
    color: white;
}

.author:last-child::after {
    content: '';
    margin: 0;
}

.affiliation {
    font-size: 0.8125rem;
    font-weight: 500;
    margin-bottom: 0.75rem;
    opacity: 0.8;
    text-transform: uppercase;
    letter-spacing: 0.1em;
}

.key-finding {
    margin: 1.5rem 0 0.5rem;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(14, 165, 233, 0.2);
    backdrop-filter: blur(20px);
    padding: 0.75rem 1.75rem;
    border-radius: 100px;
    border: 2px solid rgba(14, 165, 233, 0.4);
    box-shadow: 0 8px 32px rgba(14, 165, 233, 0.2);
}

.badge-icon {
    font-size: 1.5rem;
    filter: drop-shadow(0 0 8px rgba(14, 165, 233, 0.6));
}

.badge-text {
    font-size: 1rem;
    font-weight: 400;
    letter-spacing: 0.01em;
}

/* Video Container - Combination: Elevated Platform + Larger */
.video-container {
    margin: 1.5rem auto 1rem;
    max-width: 900px;
    position: relative;
    padding: 3rem;
    border-radius: 20px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.08), rgba(255, 255, 255, 0.05));
    backdrop-filter: blur(20px);
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.5),
                0 10px 30px rgba(0, 0, 0, 0.3),
                inset 0 1px 0 rgba(255, 255, 255, 0.1);
}

.hero-video-small {
    max-width: 708px;
}

.hero-video {
    width: 100%;
    height: auto;
    display: block;
    border-radius: 16px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    outline: 4px solid rgba(255, 255, 255, 0.5);
    outline-offset: -4px;
}

.video-caption {
    padding: 1.25rem 2rem 0.625rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.8);
    background: transparent;
    font-size: 0.9rem;
    font-weight: 400;
    position: relative;
    z-index: 3;
}

/* Action Buttons */
.action-buttons {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-top: 1.5rem;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.875rem 1.75rem;
    border-radius: 10px;
    text-decoration: none;
    font-weight: 600;
    font-size: 0.9375rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    border: 2px solid transparent;
    letter-spacing: 0.01em;
}

.btn-primary {
    background: white;
    color: var(--navy-dark);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3),
                0 0 0 1px rgba(255, 255, 255, 0.2);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.4),
                0 0 0 1px rgba(14, 165, 233, 0.5);
    border-color: var(--primary-color);
}

.btn-secondary {
    background: rgba(14, 165, 233, 0.15);
    color: white;
    border-color: rgba(14, 165, 233, 0.4);
    backdrop-filter: blur(20px);
}

.btn-secondary:hover {
    background: rgba(14, 165, 233, 0.25);
    transform: translateY(-3px);
    border-color: rgba(14, 165, 233, 0.6);
    box-shadow: 0 10px 30px rgba(14, 165, 233, 0.3);
}

.btn-icon {
    font-size: 1.25rem;
}

/* Sections */
.section {
    padding: 7rem 0;
}

.bg-light {
    background: var(--bg-light);
}

.section-title {
    font-size: 2.75rem;
    font-weight: 700;
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--navy-dark);
    letter-spacing: -0.02em;
    line-height: 1.2;
}

.section-subtitle {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-light);
    margin-bottom: 4rem;
    font-weight: 400;
    line-height: 1.6;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* Abstract Section */
.abstract-content {
    max-width: 850px;
    margin: 0 auto;
    font-size: 1.0625rem;
    line-height: 1.8;
    color: var(--text-dark);
}

.abstract-content p {
    margin-bottom: 1.75rem;
}

.abstract-content strong {
    color: var(--navy-dark);
    font-weight: 600;
}

.highlight-box {
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.05), rgba(8, 145, 178, 0.05));
    border-left: 5px solid var(--primary-color);
    padding: 2.5rem;
    border-radius: 16px;
    margin-top: 3.5rem;
    box-shadow: var(--shadow-sm);
}

.highlight-box h3 {
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
    font-weight: 600;
}

.highlight-box ul {
    list-style: none;
    padding: 0;
}

.highlight-box li {
    padding: 0.875rem 0;
    font-size: 1.0625rem;
    border-bottom: 1px solid rgba(14, 165, 233, 0.1);
    line-height: 1.6;
}

.highlight-box li:last-child {
    border-bottom: none;
}

/* Comparison Section */
.comparison-image-container {
    text-align: center;
    margin: 3rem 0;
    padding: 2rem;
    background: white;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
}

.comparison-image {
    max-width: 100%;
    height: auto;
    border-radius: 12px;
    box-shadow: var(--shadow-md);
}

.comparison-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1.5rem;
    margin-top: 3rem;
}

.comparison-card {
    background: white;
    padding: 2rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: 2px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.comparison-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--text-lighter), var(--border-color));
    opacity: 0.3;
}

.comparison-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-light);
}

.comparison-card.highlight {
    background: linear-gradient(135deg, 
                rgba(14, 165, 233, 0.03) 0%,
                rgba(6, 182, 212, 0.05) 50%,
                rgba(14, 165, 233, 0.03) 100%);
    border: 3px solid var(--primary-color);
    box-shadow: 0 8px 32px rgba(14, 165, 233, 0.2),
                0 0 0 1px var(--primary-color);
    transform: scale(1.02);
}

.comparison-card.highlight::before {
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    opacity: 1;
    height: 4px;
}

.comparison-card.highlight:hover {
    transform: scale(1.02) translateY(-5px);
    box-shadow: 0 12px 40px rgba(14, 165, 233, 0.25),
                0 0 0 1px var(--primary-color);
}

.card-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.8;
    transition: all 0.3s ease;
}

.comparison-card:hover .card-icon {
    opacity: 1;
    transform: scale(1.1);
}

.comparison-card.highlight .card-icon {
    opacity: 1;
    filter: drop-shadow(0 4px 12px rgba(14, 165, 233, 0.4));
}

.comparison-card h3 {
    font-size: 1.375rem;
    margin-bottom: 0.5rem;
    color: var(--navy-dark);
    font-weight: 600;
    letter-spacing: -0.01em;
    transition: color 0.3s ease;
}

.comparison-card.highlight h3 {
    color: var(--primary-color);
    font-size: 1.5rem;
    font-weight: 700;
}

.card-label {
    font-size: 0.875rem;
    color: var(--text-light);
    margin-bottom: 1.25rem;
    font-style: italic;
    font-weight: 400;
}

.comparison-card ul {
    list-style: none;
    padding: 0;
}

.comparison-card li {
    padding: 0.625rem 0;
    font-size: 0.9375rem;
    color: var(--text-light);
    line-height: 1.5;
}

/* Method Section */
.method-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.method-card {
    background: white;
    padding: 2.5rem;
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    border: 2px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.method-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

.method-number {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
}

.method-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.method-card p {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.code-example {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
    margin-top: 1rem;
}

.code-example strong {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--primary-color);
}

.code-example code {
    display: block;
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--text-dark);
}

.method-visual {
    margin-top: 1.5rem;
}

.timeline {
    display: flex;
    justify-content: space-around;
    align-items: center;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 8px;
}

.timeline-step {
    padding: 0.75rem 1.25rem;
    background: white;
    border-radius: 8px;
    font-weight: 600;
    color: var(--text-light);
    border: 2px solid var(--border-color);
}

.timeline-step.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.timeline-caption {
    text-align: center;
    margin-top: 1rem;
    font-size: 0.875rem;
    color: var(--text-light);
}

.mask-example {
    background: var(--bg-light);
    padding: 1.5rem;
    border-radius: 8px;
    margin-top: 1rem;
}

.mask-line {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin: 0.5rem 0;
    font-family: 'Monaco', 'Courier New', monospace;
}

.mask-line .label {
    font-weight: 600;
    color: var(--primary-color);
    min-width: 80px;
}

.mask-line .text {
    flex: 1;
    font-size: 1rem;
}

.masked {
    background: var(--text-dark);
    color: transparent;
    border-radius: 4px;
    padding: 0 4px;
}


/* Results Section */
.results-subsection {
    margin-bottom: 6rem;
}

.subsection-title {
    font-size: 1.875rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--navy-dark);
    letter-spacing: -0.01em;
}

.subsection-subtitle {
    font-size: 1.0625rem;
    color: var(--text-light);
    margin-bottom: 2.5rem;
    line-height: 1.6;
}

.table-container {
    overflow-x: auto;
    background: white;
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    margin: 2.5rem 0;
    border: 1px solid var(--border-color);
}

.results-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.9375rem;
}

.results-table thead {
    background: var(--navy-dark);
    color: white;
}

.results-table th {
    padding: 1.125rem 0.875rem;
    text-align: center;
    font-weight: 600;
    font-size: 0.8125rem;
    letter-spacing: 0.025em;
    text-transform: uppercase;
}

.results-table td {
    padding: 0.875rem 0.75rem;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
    font-weight: 400;
}

.results-table tbody tr {
    transition: all 0.2s ease;
}

.results-table tbody tr:hover {
    background: var(--bg-light);
    transform: scale(1.002);
}

.results-table .section-header {
    background: linear-gradient(135deg, 
                rgba(14, 165, 233, 0.08), 
                rgba(6, 182, 212, 0.05));
    font-weight: 600;
    border-top: 2px solid var(--primary-color);
    border-bottom: 2px solid var(--primary-color);
}

.results-table .section-header td {
    text-align: left;
    padding: 1.125rem 1rem;
    color: var(--navy-dark);
    font-size: 0.9375rem;
}

.highlight-row {
    background: linear-gradient(135deg, 
                rgba(14, 165, 233, 0.1), 
                rgba(6, 182, 212, 0.08)) !important;
    font-weight: 600;
    border-left: 4px solid var(--primary-color);
    box-shadow: inset 0 0 0 1px rgba(14, 165, 233, 0.2);
}

.highlight-row:hover {
    background: linear-gradient(135deg, 
                rgba(14, 165, 233, 0.15), 
                rgba(6, 182, 212, 0.12)) !important;
}

.reference-row {
    background: rgba(14, 165, 233, 0.02);
    font-style: italic;
    color: var(--text-light);
    opacity: 0.7;
}

.yes-icon {
    color: var(--success-color);
    font-weight: 700;
    font-size: 1.125rem;
}

.no-icon {
    color: var(--text-lighter);
    font-weight: 700;
    font-size: 1.125rem;
    opacity: 0.5;
}

.underline {
    text-decoration: underline;
    text-decoration-color: var(--primary-color);
    text-decoration-thickness: 2px;
    text-underline-offset: 3px;
}

/* Result Highlights */
.result-highlights {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.highlight-card {
    background: linear-gradient(135deg, 
                rgba(14, 165, 233, 0.05), 
                rgba(6, 182, 212, 0.03));
    padding: 2.5rem 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow-md);
    border: 2px solid rgba(14, 165, 233, 0.15);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.highlight-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

.highlight-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.highlight-number {
    font-size: 3.5rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.75rem;
    line-height: 1;
}

.highlight-label {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--navy-dark);
    margin-bottom: 0.5rem;
}

.highlight-desc {
    font-size: 0.875rem;
    color: var(--text-light);
    font-weight: 400;
}

/* Real World Results */
.video-results-container {
    margin: 3rem 0;
}

.video-wrapper {
    background: white;
    border-radius: 24px;
    overflow: hidden;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12),
                0 8px 24px rgba(0, 0, 0, 0.08);
    border: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.video-wrapper:hover {
    box-shadow: 0 25px 70px rgba(0, 0, 0, 0.15),
                0 10px 30px rgba(0, 0, 0, 0.1);
    transform: translateY(-2px);
}

.video-square {
    max-width: 750px;
    margin: 0 auto;
    aspect-ratio: 1;
    position: relative;
    background: linear-gradient(135deg, 
                var(--bg-light) 0%, 
                white 100%);
}

.video-square .results-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    display: block;
}

.results-video {
    width: 100%;
    height: auto;
    display: block;
}

.real-world-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin: 3rem 0;
}

.stat-card {
    background: white;
    padding: 2.5rem 2rem;
    border-radius: 20px;
    text-align: center;
    box-shadow: var(--shadow-md);
    transition: all 0.3s ease;
    border: 2px solid var(--border-color);
    position: relative;
    overflow: hidden;
}

.stat-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.stat-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.stat-number {
    font-size: 2.75rem;
    font-weight: 800;
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 0.75rem;
    line-height: 1;
}

.stat-label {
    font-size: 0.9375rem;
    color: var(--text-light);
    font-weight: 500;
}

.callout-box {
    background: linear-gradient(135deg, 
                rgba(14, 165, 233, 0.06), 
                rgba(6, 182, 212, 0.04));
    border-left: 5px solid var(--primary-color);
    padding: 2rem;
    border-radius: 16px;
    margin: 3rem 0;
    font-size: 1.0625rem;
    box-shadow: var(--shadow-sm);
    line-height: 1.7;
}

.callout-box strong {
    color: var(--primary-color);
    font-weight: 600;
}


/* Citation Section */
.citation-box {
    background: var(--navy-dark);
    color: white;
    padding: 2.5rem;
    border-radius: 20px;
    position: relative;
    margin: 2.5rem 0;
    box-shadow: var(--shadow-lg);
    border: 1px solid rgba(14, 165, 233, 0.2);
}

.citation-box pre {
    overflow-x: auto;
    margin: 0;
    padding-right: 2rem;
}

.citation-box code {
    font-family: 'Monaco', 'Courier New', monospace;
    font-size: 0.875rem;
    line-height: 1.7;
    color: rgba(255, 255, 255, 0.95);
}

.copy-btn {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    background: white;
    color: var(--navy-dark);
    border: none;
    padding: 0.875rem 1.75rem;
    border-radius: 10px;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    transition: all 0.3s ease;
    box-shadow: var(--shadow-md);
    font-size: 0.9375rem;
}

.copy-btn:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.copy-icon {
    font-size: 1.125rem;
}

/* Links Section */
.links-section {
    margin-top: 5rem;
}

.links-section h3 {
    font-size: 1.875rem;
    margin-bottom: 2.5rem;
    text-align: center;
    color: var(--navy-dark);
    font-weight: 600;
}

.resource-links {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.resource-link {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 2.25rem 2rem;
    background: white;
    border-radius: 20px;
    text-decoration: none;
    color: var(--text-dark);
    box-shadow: var(--shadow-md);
    border: 2px solid var(--border-color);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.resource-link::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
    opacity: 0;
    transition: opacity 0.3s ease;
}

.resource-link:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary-color);
}

.resource-link:hover::before {
    opacity: 1;
}

.resource-icon {
    font-size: 2.5rem;
    opacity: 0.9;
    transition: transform 0.3s ease;
}

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

.resource-text {
    display: flex;
    flex-direction: column;
    gap: 0.375rem;
}

.resource-text strong {
    font-size: 1.125rem;
    color: var(--navy-dark);
    font-weight: 600;
}

.resource-text small {
    color: var(--text-light);
    font-size: 0.875rem;
    line-height: 1.5;
}

/* Footer */
.footer {
    background: var(--navy-dark);
    color: white;
    padding: 4rem 0 3rem;
    text-align: center;
    border-top: 1px solid rgba(14, 165, 233, 0.2);
}

.footer p {
    margin: 0.5rem 0;
    opacity: 0.7;
    font-size: 0.9375rem;
}

.footer-note {
    font-size: 0.875rem;
    max-width: 600px;
    margin: 1rem auto 0;
    opacity: 0.6;
    line-height: 1.6;
    text-align: center;
}

/* Animations */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.8s ease forwards;
}

.fade-in-delay-1 {
    animation: fadeIn 0.8s ease 0.2s forwards;
    opacity: 0;
}

.fade-in-delay-2 {
    animation: fadeIn 0.8s ease 0.4s forwards;
    opacity: 0;
}

.fade-in-delay-3 {
    animation: fadeIn 0.8s ease 0.6s forwards;
    opacity: 0;
}

.fade-in-delay-4 {
    animation: fadeIn 0.8s ease 0.8s forwards;
    opacity: 0;
}

.fade-in-delay-5 {
    animation: fadeIn 0.8s ease 1s forwards;
    opacity: 0;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-container {
        padding: 0.75rem 1rem;
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .nav-logo {
        font-size: 1.25rem;
    }
    
    .nav-links {
        font-size: 0.8125rem;
        display: grid;
        grid-template-columns: repeat(4, auto);
        gap: 0.75rem;
        justify-content: center;
        width: 100%;
    }
    
    /* Regular nav links on first row */
    .nav-links a:nth-child(1) { grid-column: 1; grid-row: 1; }
    .nav-links a:nth-child(2) { grid-column: 2; grid-row: 1; }
    .nav-links a:nth-child(3) { grid-column: 3; grid-row: 1; }
    .nav-links a:nth-child(4) { grid-column: 4; grid-row: 1; }
    
    /* Paper and Code buttons on second row, centered */
    .nav-btn:nth-child(5) { grid-column: 2; grid-row: 2; }
    .nav-btn:nth-child(6) { grid-column: 3; grid-row: 2; }
    
    .nav-btn {
        padding: 0.4rem 0.75rem;
        font-size: 0.8125rem;
        margin-top: 0.5rem;
    }
    
    /* Hero section - more top padding to prevent title overlap */
    .hero {
        padding: 10rem 0 2rem;
    }

    .title {
        font-size: 2rem;
    }

    .subtitle {
        font-size: 1rem;
    }

    .section-title {
        font-size: 1.875rem;
    }
    
    .hero-video-small {
        max-width: 100%;
    }
    
    .video-square {
        max-width: 100%;
    }

    .comparison-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }
    
    .method-grid,
    .result-highlights,
    .real-world-stats {
        grid-template-columns: 1fr;
    }

    .action-buttons {
        flex-direction: column;
        align-items: stretch;
    }

    .btn {
        justify-content: center;
    }

    .table-container {
        font-size: 0.8rem;
    }

    .results-table th,
    .results-table td {
        padding: 0.75rem 0.5rem;
    }

    .copy-btn {
        position: static;
        width: 100%;
        justify-content: center;
        margin-top: 1.5rem;
    }
    
    .author::after {
        margin-left: 0.75rem;
    }
    
    .badge {
        padding: 0.75rem 1.5rem;
        font-size: 0.875rem;
    }
    
    .badge-text {
        font-size: 0.875rem;
    }
    
    .video-container {
        padding: 2rem;
    }
    
    .stat-card {
        padding: 1.5rem 1rem;
    }
}

/* Smooth Scrolling Elements */
.scroll-reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.scroll-reveal.revealed {
    opacity: 1;
    transform: translateY(0);
}