/* =====================================================================
   Carbox Showcase Frontend Stylesheet
   Authors: Suleiman M Hajizadeh & Garib N Murshudov (2026)
   Clean, modern, glassmorphic dark-theme scientific styling.
   ===================================================================== */

:root {
    --bg-dark: #07090e;
    --bg-surface: #0e131f;
    --bg-surface-elevated: #161d30;
    --bg-card: rgba(22, 29, 48, 0.7);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-highlight: rgba(0, 229, 255, 0.3);
    
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    
    --accent-cyan: #00e5ff;
    --accent-blue: #38bdf8;
    --accent-purple: #a855f7;
    --accent-green: #10b981;
    --accent-orange: #f59e0b;
    --accent-red: #ef4444;

    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-mono: 'Fira Code', monospace;
    
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    --shadow-card: 0 10px 30px -10px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 25px rgba(0, 229, 255, 0.15);
}

/* Base Reset */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

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

body {
    background-color: var(--bg-dark);
    color: var(--text-primary);
    font-family: var(--font-sans);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Container */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Navbar */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgba(7, 9, 14, 0.85);
    backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-color);
    padding: 14px 0;
    transition: all 0.3s ease;
}

.nav-container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 20px;
}

.brand-group {
    display: flex;
    align-items: center;
    gap: 12px;
    text-decoration: none;
}

.brand-logo {
    width: 34px;
    height: 34px;
    object-fit: contain;
}

.brand-text {
    display: flex;
    flex-direction: column;
}

.brand-name {
    font-size: 1.15rem;
    font-weight: 800;
    letter-spacing: 0.05em;
    color: var(--text-primary);
}

.brand-tag {
    font-size: 0.65rem;
    font-weight: 700;
    color: var(--accent-cyan);
    letter-spacing: 0.08em;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 24px;
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 6px;
    transition: color 0.2s ease;
}

.nav-link:hover {
    color: var(--accent-cyan);
}

.nav-actions {
    display: flex;
    align-items: center;
    gap: 12px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
}

.btn-colab {
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #ffffff;
}

.btn-colab:hover {
    box-shadow: 0 4px 15px rgba(245, 158, 11, 0.35);
    transform: translateY(-1px);
}

.btn-github {
    background: var(--bg-surface-elevated);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.btn-github:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--text-secondary);
}

/* Hero Section */
.hero-section {
    position: relative;
    padding: 80px 0 60px;
    overflow: hidden;
    text-align: center;
}

.hero-glow {
    position: absolute;
    top: -100px;
    left: 50%;
    transform: translateX(-50%);
    width: 600px;
    height: 350px;
    background: radial-gradient(circle, rgba(0, 229, 255, 0.12) 0%, rgba(168, 85, 247, 0.08) 50%, transparent 70%);
    pointer-events: none;
    z-index: 0;
}

.hero-content {
    position: relative;
    z-index: 1;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    background: rgba(0, 229, 255, 0.08);
    border: 1px solid rgba(0, 229, 255, 0.2);
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--accent-cyan);
    margin-bottom: 24px;
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-cyan);
    border-radius: 50%;
    box-shadow: 0 0 10px var(--accent-cyan);
}

.hero-title {
    font-size: 2.75rem;
    font-weight: 800;
    line-height: 1.25;
    max-width: 950px;
    margin: 0 auto 20px;
}

.gradient-text {
    background: linear-gradient(135deg, var(--accent-cyan), var(--accent-purple));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-description {
    font-size: 1.15rem;
    color: var(--text-secondary);
    max-width: 820px;
    margin: 0 auto 36px;
    line-height: 1.7;
}

/* Authors Card */
.authors-card {
    display: inline-flex;
    align-items: center;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 16px 24px;
    margin-bottom: 48px;
    box-shadow: var(--shadow-card);
    text-align: left;
    max-width: 900px;
}

.author-item {
    display: flex;
    align-items: center;
    gap: 14px;
}

.author-avatar {
    width: 42px;
    height: 42px;
    border-radius: 50%;
    background: rgba(0, 229, 255, 0.1);
    color: var(--accent-cyan);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.1rem;
    flex-shrink: 0;
}

.author-avatar.mrc {
    background: rgba(168, 85, 247, 0.1);
    color: var(--accent-purple);
}

.author-details {
    display: flex;
    flex-direction: column;
}

.author-name {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
}

.author-affil {
    font-size: 0.78rem;
    color: var(--text-muted);
}

.author-divider {
    width: 1px;
    height: 40px;
    background: var(--border-color);
    margin: 0 24px;
}

/* Metrics Grid */
.metrics-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 18px;
    margin-top: 10px;
}

.metric-card {
    background: var(--bg-card);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 24px 20px;
    transition: transform 0.2s ease, border-color 0.2s ease;
}

.metric-card:hover {
    transform: translateY(-3px);
    border-color: rgba(255, 255, 255, 0.2);
}

.metric-card.highlight {
    border-color: rgba(0, 229, 255, 0.35);
    background: linear-gradient(180deg, rgba(0, 229, 255, 0.05), rgba(22, 29, 48, 0.7));
}

.metric-card.success {
    border-color: rgba(16, 185, 129, 0.35);
    background: linear-gradient(180deg, rgba(16, 185, 129, 0.05), rgba(22, 29, 48, 0.7));
}

.metric-num {
    font-size: 2.1rem;
    font-weight: 800;
    font-family: var(--font-mono);
    color: var(--text-primary);
    margin-bottom: 6px;
}

.metric-card.highlight .metric-num {
    color: var(--accent-cyan);
}

.metric-card.success .metric-num {
    color: var(--accent-green);
}

.metric-label {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.metric-sub {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Sections */
.section {
    padding: 80px 0;
}

.section.bg-alt {
    background: var(--bg-surface);
}

.section-header {
    text-align: center;
    max-width: 720px;
    margin: 0 auto 50px;
}

.section-tag {
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.1em;
    color: var(--accent-cyan);
    display: inline-block;
    margin-bottom: 10px;
}

.section-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 12px;
}

.section-subtitle {
    font-size: 1.05rem;
    color: var(--text-secondary);
}

/* Vision Cards */
.vision-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
}

.vision-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 36px 30px;
    box-shadow: var(--shadow-card);
}

.vision-card .card-icon {
    font-size: 2rem;
    margin-bottom: 20px;
}

.error-card .card-icon {
    color: var(--accent-orange);
}

.solution-card .card-icon {
    color: var(--accent-cyan);
}

.vision-card h3 {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 14px;
}

.vision-card p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 20px;
}

.quote-box {
    border-left: 3px solid var(--accent-orange);
    padding-left: 18px;
    font-style: italic;
    color: #e2e8f0;
    font-size: 0.92rem;
    line-height: 1.6;
}

.quote-box cite {
    display: block;
    margin-top: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    font-style: normal;
    color: var(--accent-orange);
}

.check-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.check-list li {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 0.92rem;
    color: var(--text-secondary);
}

.check-list li i {
    color: var(--accent-green);
}

/* Stepper Tabs */
.stepper-nav {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 30px;
    flex-wrap: wrap;
}

.step-btn {
    display: flex;
    align-items: center;
    gap: 10px;
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    padding: 10px 20px;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.step-btn .step-num {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
}

.step-btn.active {
    background: rgba(0, 229, 255, 0.1);
    border-color: var(--accent-cyan);
    color: var(--text-primary);
}

.step-btn.active .step-num {
    background: var(--accent-cyan);
    color: #000;
}

.step-content-box {
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    padding: 40px;
}

.step-pane {
    display: none;
}

.step-pane.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: translateY(0); }
}

.pane-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr;
    gap: 36px;
    align-items: center;
}

.pane-text .badge {
    background: rgba(0, 229, 255, 0.1);
    color: var(--accent-cyan);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 700;
    display: inline-block;
    margin-bottom: 12px;
}

.pane-text h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 14px;
}

.pane-text p {
    color: var(--text-secondary);
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 16px;
}

.math-box {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 12px 18px;
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
    color: var(--accent-cyan);
    font-size: 0.95rem;
    margin: 14px 0;
}

.pane-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.pane-card h4 {
    font-size: 1rem;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.spec-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.spec-list li {
    display: flex;
    justify-content: space-between;
    font-size: 0.88rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.05);
    padding-bottom: 8px;
}

.spec-list li span {
    color: var(--text-secondary);
}

.spec-list li strong {
    color: var(--accent-cyan);
    font-family: var(--font-mono);
}

.stat-badge-group {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.s-badge {
    display: flex;
    justify-content: space-between;
    padding: 8px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
}

.s-badge.red { background: rgba(239, 68, 68, 0.1); color: #fca5a5; }
.s-badge.orange { background: rgba(245, 158, 11, 0.1); color: #fcd34d; }
.s-badge.purple { background: rgba(168, 85, 247, 0.1); color: #d8b4fe; }
.s-badge.green { background: rgba(16, 185, 129, 0.1); color: #6ee7b7; font-weight: 700; }

/* 3D Molecular Viewer */
.viewer-wrapper {
    display: grid;
    grid-template-columns: 380px 1fr;
    gap: 24px;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.viewer-controls {
    padding: 28px;
    display: flex;
    flex-direction: column;
    border-right: 1px solid var(--border-color);
}

.control-label {
    font-size: 0.82rem;
    font-weight: 700;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 12px;
}

.preset-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 8px;
    margin-bottom: 24px;
}

.preset-btn {
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    padding: 10px;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.82rem;
    cursor: pointer;
    transition: all 0.2s ease;
    text-align: center;
}

.preset-btn .p-id {
    font-weight: 700;
    font-family: var(--font-mono);
    color: var(--text-primary);
    display: block;
}

.preset-btn.active {
    background: rgba(0, 229, 255, 0.12);
    border-color: var(--accent-cyan);
}

.preset-btn.active .p-id {
    color: var(--accent-cyan);
}

.viewer-info-card {
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 20px;
}

.viewer-info-card h4 {
    font-size: 1.05rem;
    font-weight: 700;
    margin-bottom: 14px;
}

.v-meta {
    display: flex;
    flex-direction: column;
    gap: 8px;
    font-size: 0.82rem;
    margin-bottom: 14px;
}

.v-label {
    color: var(--text-muted);
}

.highlight-text {
    color: var(--accent-cyan);
    font-family: var(--font-mono);
}

.status-pill {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 999px;
    font-size: 0.72rem;
    font-weight: 700;
}

.status-pill.green {
    background: rgba(16, 185, 129, 0.15);
    color: var(--accent-green);
}

.status-pill.blue {
    background: rgba(0, 229, 255, 0.15);
    color: var(--accent-cyan);
}

.mol-loader {
    position: absolute;
    inset: 0;
    background: rgba(7, 9, 14, 0.85);
    backdrop-filter: blur(4px);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 12px;
    z-index: 20;
    color: var(--accent-cyan);
    font-size: 0.9rem;
    font-weight: 500;
}

.mol-loader i {
    font-size: 1.8rem;
}

.viewer-fallback-msg {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--accent-orange);
    gap: 10px;
    font-size: 0.95rem;
}

.pdb-tag {
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--accent-cyan);
    background: rgba(0, 229, 255, 0.08);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

.res-tag {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.dist-lbhb {
    color: #38ef7d;
    font-weight: 700;
    font-family: var(--font-mono);
}

.dist-norm {
    color: var(--text-secondary);
    font-family: var(--font-mono);
}

.env-buried {
    color: #a78bfa;
    font-family: var(--font-mono);
    font-weight: 600;
}

.env-exposed {
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.b-cutoff {
    font-family: var(--font-mono);
    font-size: 0.8rem;
    color: var(--text-muted);
}

.empty-table-msg {
    text-align: center;
    padding: 32px !important;
    color: var(--text-muted);
    font-style: italic;
}

.btn-copied {
    border-color: var(--accent-green) !important;
    color: var(--accent-green) !important;
}

.v-description {
    font-size: 0.82rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.viewer-container {
    position: relative;
    min-height: 520px;
    background: #040508;
}

.mol-viewport {
    width: 100%;
    height: 100%;
    min-height: 520px;
}

.viewer-overlay {
    position: absolute;
    bottom: 16px;
    left: 16px;
    background: rgba(7, 9, 14, 0.75);
    backdrop-filter: blur(8px);
    border: 1px solid var(--border-color);
    padding: 6px 14px;
    border-radius: 999px;
    display: flex;
    gap: 16px;
    font-size: 0.72rem;
    color: var(--text-muted);
}

/* Benchmarks Table */
.table-card {
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-card);
}

.table-toolbar {
    padding: 18px 24px;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-wrap: wrap;
}

.search-box {
    position: relative;
    width: 320px;
}

.search-box i {
    position: absolute;
    left: 14px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.search-box input {
    width: 100%;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 8px 14px 8px 36px;
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 0.85rem;
    outline: none;
}

.search-box input:focus {
    border-color: var(--accent-cyan);
}

.filter-pills {
    display: flex;
    gap: 8px;
}

.pill-btn {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 6px 14px;
    border-radius: 999px;
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s ease;
}

.pill-btn.active {
    background: rgba(0, 229, 255, 0.15);
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

.table-responsive {
    overflow-x: auto;
}

.data-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.85rem;
    text-align: left;
}

.data-table th {
    background: var(--bg-surface);
    color: var(--text-secondary);
    font-weight: 600;
    padding: 12px 18px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.78rem;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.data-table td {
    padding: 14px 18px;
    border-bottom: 1px solid rgba(255, 255, 255, 0.04);
    color: var(--text-secondary);
}

.data-table tr:hover td {
    background: rgba(255, 255, 255, 0.02);
}

.pdb-badge {
    font-family: var(--font-mono);
    font-weight: 700;
    color: var(--accent-cyan);
    background: rgba(0, 229, 255, 0.08);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

.mono-cell {
    font-family: var(--font-mono);
    color: var(--text-primary);
}

/* Citation Section */
.citation-grid {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 28px;
}

.citation-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 24px;
}

.citation-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 14px;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.btn-copy {
    background: var(--bg-surface-elevated);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 5px 12px;
    border-radius: var(--radius-sm);
    font-size: 0.78rem;
    cursor: pointer;
}

.btn-copy:hover {
    border-color: var(--accent-cyan);
    color: var(--accent-cyan);
}

.code-block {
    background: #040508;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    padding: 16px;
    overflow-x: auto;
    font-family: var(--font-mono);
    font-size: 0.8rem;
    line-height: 1.5;
    color: #cbd5e1;
}

.citation-links-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: 28px;
}

.citation-links-card h3 {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 8px;
}

.citation-links-card p {
    color: var(--text-secondary);
    font-size: 0.88rem;
    margin-bottom: 20px;
}

.resource-links {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.r-link {
    display: flex;
    align-items: center;
    gap: 14px;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 12px 16px;
    text-decoration: none;
    color: var(--text-primary);
    transition: all 0.2s ease;
}

.r-link:hover {
    border-color: var(--accent-cyan);
    transform: translateX(4px);
}

.r-link i {
    font-size: 1.2rem;
    color: var(--accent-cyan);
    width: 24px;
    text-align: center;
}

.r-link strong {
    display: block;
    font-size: 0.88rem;
}

.r-link span {
    display: block;
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Footer */
.footer {
    border-top: 1px solid var(--border-color);
    padding: 36px 0;
    background: var(--bg-dark);
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
}

.footer-left {
    display: flex;
    align-items: center;
    gap: 14px;
}

.footer-logo {
    width: 32px;
    height: 32px;
}

.footer-brand {
    font-size: 0.95rem;
    font-weight: 700;
}

.footer-copy {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.affil-tag {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

/* Responsive Media Queries */
@media (max-width: 980px) {
    .nav-links { display: none; }
    .hero-title { font-size: 2.2rem; }
    .vision-grid { grid-template-columns: 1fr; }
    .pane-grid { grid-template-columns: 1fr; }
    .viewer-wrapper { grid-template-columns: 1fr; }
    .viewer-controls { border-right: none; border-bottom: 1px solid var(--border-color); }
    .citation-grid { grid-template-columns: 1fr; }
    .authors-card { flex-direction: column; gap: 16px; }
    .author-divider { width: 100%; height: 1px; margin: 0; }
}

@media (max-width: 640px) {
    .hero-title { font-size: 1.8rem; }
    .hero-description { font-size: 0.95rem; }
    .metric-num { font-size: 1.75rem; }
    .table-toolbar { flex-direction: column; align-items: stretch; }
    .search-box { width: 100%; }
}