/* xanadu.science - Generative Scientific Inquiry */
/* Colors: #1a1a2e (deep base), #4a90d9 (primary blue), #f5f0e8 (warm off-white), #e8b84b (accent gold), #6c757d (muted gray) */
/* Fonts: Bebas Neue (headings), Inter (body), Lora (serif accents) */

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

:root {
    --deep-base: #1a1a2e;
    --primary-blue: #4a90d9;
    --warm-white: #f5f0e8;
    --accent-gold: #e8b84b;
    --muted-gray: #6c757d;
    --deep-base-80: rgba(26, 26, 46, 0.8);
    --primary-blue-30: rgba(74, 144, 217, 0.3);
    --primary-blue-60: rgba(74, 144, 217, 0.6);
    --accent-gold-30: rgba(232, 184, 75, 0.3);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Inter', sans-serif;
    background: var(--deep-base);
    color: var(--warm-white);
    overflow-x: hidden;
    line-height: 1.6;
}

/* ===== GENERATIVE CANVAS BACKGROUND ===== */
#generative-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 0;
    opacity: 0.3;
    pointer-events: none;
}

/* ===== HUD GRID OVERLAY ===== */
#hud-grid-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: 1;
    pointer-events: none;
}

.hud-crosshair {
    position: absolute;
    width: 40px;
    height: 40px;
}
.hud-crosshair::before,
.hud-crosshair::after {
    content: '';
    position: absolute;
    background: var(--primary-blue-30);
}
.hud-crosshair::before {
    width: 1px;
    height: 100%;
    left: 50%;
}
.hud-crosshair::after {
    width: 100%;
    height: 1px;
    top: 50%;
}
.hud-crosshair.top-left { top: 20px; left: 20px; }
.hud-crosshair.top-right { top: 20px; right: 20px; }
.hud-crosshair.bottom-left { bottom: 20px; left: 20px; }
.hud-crosshair.bottom-right { bottom: 20px; right: 20px; }

/* ===== NAV HUD BAR ===== */
#hud-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px 40px;
    background: linear-gradient(180deg, rgba(26,26,46,0.95) 0%, rgba(26,26,46,0.7) 100%);
    border-bottom: 1px solid var(--primary-blue-30);
    backdrop-filter: blur(10px);
}

.nav-brand {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 24px;
    letter-spacing: 3px;
    display: flex;
    align-items: center;
    gap: 2px;
}
.brand-bracket { color: var(--muted-gray); }
.brand-name { color: var(--warm-white); }
.brand-dot { color: var(--accent-gold); }
.brand-ext { color: var(--primary-blue); }

.nav-links {
    display: flex;
    gap: 32px;
}
.nav-link {
    color: var(--muted-gray);
    text-decoration: none;
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 2px;
    text-transform: uppercase;
    transition: color 0.3s ease;
    position: relative;
}
.nav-link::before {
    content: attr(data-index) '.';
    color: var(--primary-blue);
    margin-right: 4px;
    font-size: 11px;
}
.nav-link:hover { color: var(--warm-white); }
.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent-gold);
    transition: width 0.3s ease;
}
.nav-link:hover::after { width: 100%; }

.nav-status {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 11px;
    letter-spacing: 1px;
    color: var(--muted-gray);
}
.status-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: #4caf50;
    animation: pulse-glow 2s ease-in-out infinite;
}

@keyframes pulse-glow {
    0%, 100% { box-shadow: 0 0 4px #4caf50; }
    50% { box-shadow: 0 0 12px #4caf50, 0 0 24px rgba(76,175,80,0.3); }
}

/* ===== MAIN CONTENT ===== */
#main-content {
    position: relative;
    z-index: 2;
}

.section {
    padding: 120px 60px 80px;
    min-height: 100vh;
}

/* ===== HERO SECTION ===== */
#hero {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    align-items: center;
    padding-top: 140px;
}

.hero-left {
    position: relative;
}

.viz-canvas {
    width: 100%;
    aspect-ratio: 1;
    border: 1px solid var(--primary-blue-30);
    background: rgba(26, 26, 46, 0.6);
}

.hero-hud-panel {
    position: absolute;
    bottom: -10px;
    right: -10px;
}

.hero-right {
    padding-left: 20px;
}

.hero-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: clamp(56px, 8vw, 96px);
    line-height: 0.95;
    letter-spacing: 4px;
    color: var(--warm-white);
    margin-bottom: 24px;
}

.hero-subtitle {
    font-family: 'Lora', serif;
    font-size: 18px;
    line-height: 1.8;
    color: var(--muted-gray);
    max-width: 480px;
    margin-bottom: 40px;
}

.hero-cta {
    display: flex;
    gap: 20px;
}

.cta-button {
    display: inline-block;
    padding: 14px 32px;
    font-family: 'Inter', sans-serif;
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 2px;
    text-transform: uppercase;
    text-decoration: none;
    border: 1px solid var(--primary-blue);
    transition: all 0.3s ease;
}
.cta-button.primary {
    background: var(--primary-blue);
    color: var(--deep-base);
}
.cta-button.primary:hover {
    background: transparent;
    color: var(--primary-blue);
    box-shadow: 0 0 20px var(--primary-blue-30);
}
.cta-button.secondary {
    background: transparent;
    color: var(--primary-blue);
}
.cta-button.secondary:hover {
    background: var(--primary-blue);
    color: var(--deep-base);
}

/* ===== HUD PANELS ===== */
.hud-panel {
    background: var(--deep-base-80);
    border: 1px solid var(--primary-blue-30);
    font-size: 12px;
    min-width: 220px;
}
.hud-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    border-bottom: 1px solid var(--primary-blue-30);
    background: rgba(74, 144, 217, 0.08);
}
.hud-label {
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    font-size: 10px;
    letter-spacing: 2px;
    color: var(--primary-blue);
}
.hud-blink {
    color: var(--accent-gold);
    animation: blink 1.5s ease-in-out infinite;
}
@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.2; }
}
.hud-panel-data {
    padding: 10px 12px;
}
.hud-panel-body {
    padding: 16px;
}
.hud-panel-body p {
    font-family: 'Lora', serif;
    font-size: 14px;
    line-height: 1.7;
    color: var(--muted-gray);
    margin-bottom: 16px;
}
.data-row {
    display: flex;
    justify-content: space-between;
    padding: 4px 0;
    border-bottom: 1px solid rgba(74, 144, 217, 0.1);
}
.data-row:last-child { border-bottom: none; }
.data-key {
    color: var(--muted-gray);
    font-weight: 500;
    letter-spacing: 1px;
    font-size: 10px;
}
.data-val {
    color: var(--accent-gold);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

/* ===== SECTION HEADERS ===== */
.section-header {
    display: flex;
    align-items: center;
    gap: 20px;
    margin-bottom: 60px;
}
.section-index {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 48px;
    color: var(--primary-blue-30);
    line-height: 1;
}
.section-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 42px;
    letter-spacing: 4px;
    color: var(--warm-white);
    white-space: nowrap;
}
.section-line {
    flex: 1;
    height: 1px;
    background: linear-gradient(90deg, var(--primary-blue-30), transparent);
}

/* ===== RESEARCH GRID ===== */
.research-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 30px;
}

.research-card {
    position: relative;
    padding: 40px;
    background: rgba(26, 26, 46, 0.6);
    border: 1px solid var(--primary-blue-30);
    transition: all 0.4s ease;
    overflow: hidden;
}
.research-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--primary-blue), transparent);
    opacity: 0;
    transition: opacity 0.4s ease;
}
.research-card:hover::before { opacity: 1; }
.research-card:hover {
    border-color: var(--primary-blue-60);
    background: rgba(74, 144, 217, 0.05);
    transform: translateY(-2px);
}

.card-hud-corner {
    position: absolute;
    width: 12px;
    height: 12px;
}
.card-hud-corner::before,
.card-hud-corner::after {
    content: '';
    position: absolute;
    background: var(--primary-blue-30);
    transition: background 0.3s ease;
}
.research-card:hover .card-hud-corner::before,
.research-card:hover .card-hud-corner::after {
    background: var(--primary-blue);
}
.card-hud-corner.tl { top: 0; left: 0; }
.card-hud-corner.tl::before { width: 12px; height: 1px; top: 0; left: 0; }
.card-hud-corner.tl::after { width: 1px; height: 12px; top: 0; left: 0; }
.card-hud-corner.tr { top: 0; right: 0; }
.card-hud-corner.tr::before { width: 12px; height: 1px; top: 0; right: 0; }
.card-hud-corner.tr::after { width: 1px; height: 12px; top: 0; right: 0; }
.card-hud-corner.bl { bottom: 0; left: 0; }
.card-hud-corner.bl::before { width: 12px; height: 1px; bottom: 0; left: 0; }
.card-hud-corner.bl::after { width: 1px; height: 12px; bottom: 0; left: 0; }
.card-hud-corner.br { bottom: 0; right: 0; }
.card-hud-corner.br::before { width: 12px; height: 1px; bottom: 0; right: 0; }
.card-hud-corner.br::after { width: 1px; height: 12px; bottom: 0; right: 0; }

.card-icon {
    width: 80px;
    height: 80px;
    margin-bottom: 24px;
}
.card-svg {
    width: 100%;
    height: 100%;
}
.orbit-ring {
    fill: none;
    stroke: var(--primary-blue-30);
    stroke-width: 1;
}
.nucleus { fill: var(--accent-gold); }
.electron { fill: var(--primary-blue); }
.e1 { animation: orbit1 3s linear infinite; transform-origin: 40px 40px; }
.e2 { animation: orbit2 4s linear infinite; transform-origin: 40px 40px; }
.e3 { animation: orbit3 5s linear infinite; transform-origin: 40px 40px; }
@keyframes orbit1 { from { transform: rotate(0deg); } to { transform: rotate(360deg); } }
@keyframes orbit2 { from { transform: rotate(120deg); } to { transform: rotate(480deg); } }
@keyframes orbit3 { from { transform: rotate(240deg); } to { transform: rotate(600deg); } }

.topo-path {
    fill: none;
    stroke: var(--primary-blue);
    stroke-width: 1.5;
    opacity: 0.6;
}
.topo-path.inner { stroke: var(--accent-gold); opacity: 0.4; }
.topo-line { stroke: var(--muted-gray); stroke-width: 0.5; stroke-dasharray: 4 2; }

.neuron { fill: var(--primary-blue); opacity: 0.7; }
.synapse { stroke: var(--primary-blue-30); stroke-width: 1; }

.hex-shape {
    fill: none;
    stroke: var(--primary-blue);
    stroke-width: 1.5;
    opacity: 0.5;
}
.hex-shape.inner { stroke: var(--accent-gold); opacity: 0.3; }
.hex-core { fill: var(--accent-gold); opacity: 0.6; }

.card-title {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 26px;
    letter-spacing: 2px;
    color: var(--warm-white);
    margin-bottom: 12px;
}
.card-desc {
    font-family: 'Lora', serif;
    font-size: 14px;
    line-height: 1.7;
    color: var(--muted-gray);
    margin-bottom: 20px;
}
.card-meta {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.meta-tag {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 1px;
    padding: 4px 10px;
    border: 1px solid var(--primary-blue-30);
    color: var(--primary-blue);
    background: rgba(74, 144, 217, 0.05);
}

/* ===== METHODOLOGY ===== */
.methodology-container {
    display: flex;
    flex-direction: column;
    gap: 40px;
}

.method-flow {
    width: 100%;
    padding: 20px 0;
}

#method-svg {
    width: 100%;
    height: auto;
    max-height: 300px;
}

.flow-path {
    fill: none;
    stroke: var(--primary-blue-30);
    stroke-width: 2;
    stroke-dasharray: 1200;
    stroke-dashoffset: 1200;
    transition: stroke-dashoffset 2s ease;
}
.flow-path.animated {
    stroke-dashoffset: 0;
}
.flow-path-glow {
    fill: none;
    stroke: var(--primary-blue);
    stroke-width: 3;
    stroke-dasharray: 1200;
    stroke-dashoffset: 1200;
    filter: blur(3px);
    opacity: 0.5;
    transition: stroke-dashoffset 2s ease;
}
.flow-path-glow.animated {
    stroke-dashoffset: 0;
}

.node-circle {
    fill: var(--deep-base);
    stroke: var(--primary-blue);
    stroke-width: 2;
    cursor: pointer;
    transition: all 0.3s ease;
}
.node-circle:hover,
.method-node.active .node-circle {
    fill: var(--primary-blue);
    filter: drop-shadow(0 0 8px var(--primary-blue));
}
.node-text {
    fill: var(--primary-blue);
    font-family: 'Inter', sans-serif;
    font-size: 12px;
    font-weight: 600;
    text-anchor: middle;
    pointer-events: none;
}
.method-node.active .node-text { fill: var(--deep-base); }
.node-label {
    fill: var(--muted-gray);
    font-family: 'Inter', sans-serif;
    font-size: 12px;
    text-anchor: middle;
}

.method-details {
    position: relative;
    min-height: 200px;
}
.method-detail {
    display: none;
    animation: fadeIn 0.4s ease;
}
.method-detail.active { display: block; }
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.method-stats {
    display: flex;
    gap: 40px;
}
.stat {
    display: flex;
    flex-direction: column;
    gap: 4px;
}
.stat-val {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 32px;
    color: var(--accent-gold);
    letter-spacing: 1px;
}
.stat-val sup {
    font-size: 16px;
}
.stat-label {
    font-size: 11px;
    color: var(--muted-gray);
    letter-spacing: 1px;
    text-transform: uppercase;
}

/* ===== PUBLICATIONS ===== */
.publications-list {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.pub-entry {
    display: grid;
    grid-template-columns: 80px 1fr 80px;
    gap: 24px;
    align-items: start;
    padding: 28px 24px;
    background: rgba(26, 26, 46, 0.4);
    border: 1px solid transparent;
    border-left: 3px solid var(--primary-blue-30);
    transition: all 0.3s ease;
}
.pub-entry:hover {
    background: rgba(74, 144, 217, 0.05);
    border-left-color: var(--accent-gold);
    border-color: var(--primary-blue-30);
    border-left-color: var(--accent-gold);
}

.pub-year {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 24px;
    color: var(--primary-blue);
    letter-spacing: 2px;
}

.pub-title {
    font-family: 'Lora', serif;
    font-size: 18px;
    font-weight: 600;
    color: var(--warm-white);
    margin-bottom: 6px;
    line-height: 1.4;
}
.pub-authors {
    font-size: 13px;
    color: var(--muted-gray);
    margin-bottom: 4px;
}
.pub-journal {
    font-size: 13px;
    color: var(--muted-gray);
    margin-bottom: 10px;
}
.pub-journal em {
    color: var(--primary-blue);
    font-style: italic;
}
.pub-tags {
    display: flex;
    gap: 6px;
    flex-wrap: wrap;
}
.pub-tag {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 1px;
    padding: 3px 8px;
    border: 1px solid var(--accent-gold-30);
    color: var(--accent-gold);
    text-transform: uppercase;
}

.pub-hud-badge {
    display: flex;
    align-items: center;
    justify-content: center;
}
.badge-val {
    font-family: 'Inter', sans-serif;
    font-size: 12px;
    font-weight: 600;
    color: var(--accent-gold);
    padding: 6px 12px;
    border: 1px solid var(--accent-gold-30);
    letter-spacing: 1px;
}

/* ===== LAB SECTION ===== */
.lab-container {
    display: grid;
    grid-template-columns: 1fr 300px;
    gap: 30px;
    align-items: start;
}

.lab-canvas-wrap {
    position: relative;
}

#lab-canvas {
    width: 100%;
    aspect-ratio: 16/10;
    background: rgba(26, 26, 46, 0.8);
    border: 1px solid var(--primary-blue-30);
}

.lab-controls {
    display: flex;
    gap: 20px;
    padding: 20px;
    background: var(--deep-base-80);
    border: 1px solid var(--primary-blue-30);
    border-top: none;
    flex-wrap: wrap;
}

.control-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    flex: 1;
    min-width: 140px;
}
.control-label {
    font-size: 10px;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--primary-blue);
}
.control-value {
    font-size: 12px;
    color: var(--accent-gold);
    font-weight: 600;
    font-variant-numeric: tabular-nums;
}

.hud-slider {
    -webkit-appearance: none;
    appearance: none;
    width: 100%;
    height: 4px;
    background: var(--primary-blue-30);
    outline: none;
    border-radius: 0;
}
.hud-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 14px;
    height: 14px;
    background: var(--primary-blue);
    border: 2px solid var(--warm-white);
    cursor: pointer;
}
.hud-slider::-moz-range-thumb {
    width: 14px;
    height: 14px;
    background: var(--primary-blue);
    border: 2px solid var(--warm-white);
    cursor: pointer;
    border-radius: 0;
}

.hud-button {
    font-family: 'Inter', sans-serif;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 2px;
    padding: 10px 20px;
    background: transparent;
    color: var(--accent-gold);
    border: 1px solid var(--accent-gold-30);
    cursor: pointer;
    transition: all 0.3s ease;
    width: 100%;
    margin-top: 4px;
}
.hud-button:hover {
    background: var(--accent-gold);
    color: var(--deep-base);
    border-color: var(--accent-gold);
}

.lab-readout .hud-panel {
    position: sticky;
    top: 100px;
}

/* ===== FOOTER ===== */
#footer {
    padding: 60px 60px 30px;
    border-top: 1px solid var(--primary-blue-30);
    background: rgba(26, 26, 46, 0.9);
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr;
    gap: 60px;
    margin-bottom: 40px;
}

.footer-brand .brand-bracket,
.footer-brand .brand-name,
.footer-brand .brand-dot,
.footer-brand .brand-ext {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 20px;
    letter-spacing: 2px;
}
.footer-tagline {
    font-family: 'Lora', serif;
    font-size: 14px;
    color: var(--muted-gray);
    margin-top: 8px;
    font-style: italic;
}

.footer-heading {
    font-family: 'Bebas Neue', sans-serif;
    font-size: 18px;
    letter-spacing: 2px;
    color: var(--primary-blue);
    margin-bottom: 16px;
}

.footer-links a {
    display: block;
    color: var(--muted-gray);
    text-decoration: none;
    font-size: 13px;
    padding: 4px 0;
    transition: color 0.3s ease;
}
.footer-links a:hover { color: var(--warm-white); }

.footer-contact p {
    font-size: 13px;
    color: var(--muted-gray);
    margin-bottom: 4px;
}

.footer-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 24px;
    border-top: 1px solid var(--primary-blue-30);
    font-size: 12px;
    color: var(--muted-gray);
}
.footer-status {
    font-family: 'Inter', sans-serif;
    font-weight: 600;
    letter-spacing: 2px;
    color: var(--primary-blue);
    font-size: 10px;
}

/* ===== SCROLLBAR ===== */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--deep-base); }
::-webkit-scrollbar-thumb { background: var(--primary-blue-30); }
::-webkit-scrollbar-thumb:hover { background: var(--primary-blue); }

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
    .section { padding: 100px 30px 60px; }
    #hero { grid-template-columns: 1fr; gap: 40px; }
    .research-grid { grid-template-columns: 1fr; }
    .lab-container { grid-template-columns: 1fr; }
    .footer-grid { grid-template-columns: 1fr; gap: 30px; }
    .pub-entry { grid-template-columns: 60px 1fr 60px; }
}

@media (max-width: 768px) {
    #hud-nav {
        flex-direction: column;
        gap: 12px;
        padding: 12px 20px;
    }
    .nav-links { gap: 16px; flex-wrap: wrap; justify-content: center; }
    .nav-status { display: none; }
    .hero-title { font-size: 48px; }
    .section-title { font-size: 28px; }
    .section-index { font-size: 36px; }
    .methodology-container { gap: 20px; }
    .method-stats { flex-direction: column; gap: 16px; }
    .lab-controls { flex-direction: column; }
}