@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;700&display=swap');

/* 
   NovaFuse Technologies - design.css
   Aesthetic: Premium, high-contrast developer R&D lab.
   Colors: Midnight dark background, electric blue highlights, stark white text, clean code borders.
*/

:root {
    --bg-main: #080C14;
    --bg-card: #111C35;
    --bg-code: #0D1526;
    --accent-blue: #3B7EFF;
    --accent-blue-hover: #5590FF;
    --accent-glow: rgba(59, 126, 255, 0.18);
    --accent-cyan: #20D4FF;
    --accent-cyan-glow: rgba(32, 212, 255, 0.16);
    --accent-gold: #F5A623;
    --gold: var(--accent-gold);
    --border-color: #1E2F52;
    --text-primary: #e8edf8;
    --text-secondary: #7a8aab;
    --text-muted: #4a5a7a;
    --font-heading: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-code: 'JetBrains Mono', 'Space Mono', SFMono-Regular, Consolas, "Liberation Mono", Menlo, monospace;
}

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

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

/* Typography */
h1, h2, h3, h4 {
    font-family: var(--font-heading);
    font-weight: 700;
    letter-spacing: -0.02em;
    color: var(--text-primary);
}

p {
    color: var(--text-secondary);
}

a {
    color: var(--accent-blue);
    text-decoration: none;
    transition: color 0.2s ease;
}

a:hover {
    color: var(--accent-blue-hover);
}

/* Layout */
.container {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 2rem;
}

header {
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 0;
    background-color: rgba(8, 12, 20, 0.8);
    backdrop-filter: blur(12px);
    position: sticky;
    top: 0;
    z-index: 100;
}

header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    font-family: var(--font-body);
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.logo span {
    color: var(--accent-blue);
}

nav ul {
    display: flex;
    list-style: none;
    gap: 2rem;
}

nav a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.9rem;
}

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

/* Hero Section */
.hero {
    padding: 8rem 0 6rem 0;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 900px;
    height: 900px;
    background: radial-gradient(circle, rgba(59,126,255,0.1) 0%, transparent 65%);
    z-index: -1;
    pointer-events: none;
}

.hero-tag {
    font-family: var(--font-code);
    font-size: 0.78rem;
    font-weight: 500;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-bottom: 1.5rem;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    border: 1px solid rgba(32, 212, 255, 0.35);
    padding: 0.35rem 0.9rem;
    border-radius: 9999px;
    background: linear-gradient(90deg, rgba(32, 212, 255, 0.12), rgba(59, 126, 255, 0.08));
    box-shadow: 0 0 24px var(--accent-cyan-glow);
}

.hero-tag::before {
    content: '●';
    font-size: 0.6rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.hero h1 {
    font-family: var(--font-body);
    font-size: 3.5rem;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.03em;
}

.hero p {
    font-size: 1.25rem;
    max-width: 750px;
    margin: 0 auto 2.5rem auto;
}

.hero-tag::before {
    content: '';
    width: 0.45rem;
    height: 0.45rem;
    border-radius: 999px;
    background: var(--accent-cyan);
    box-shadow: 0 0 10px var(--accent-cyan);
    display: inline-block;
}

.page-guide-panel {
    max-width: 920px;
    margin: 2rem auto 0 auto;
    padding: 0.75rem;
    border: 1px solid rgba(32, 212, 255, 0.18);
    border-radius: 999px;
    background: rgba(13, 21, 38, 0.72);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.22);
}

.page-guide-panel ol {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 0.5rem;
    list-style: none;
}

.page-guide-panel a {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 2.4rem;
    padding: 0.5rem 0.75rem;
    border: 1px solid rgba(59, 126, 255, 0.12);
    border-radius: 999px;
    color: var(--text-secondary);
    font-family: var(--font-code);
    font-size: 0.72rem;
    letter-spacing: 0.03em;
    text-transform: uppercase;
    background: rgba(255, 255, 255, 0.02);
}

.page-guide-panel a:hover {
    color: var(--text-primary);
    border-color: rgba(32, 212, 255, 0.38);
    background: rgba(32, 212, 255, 0.08);
}

.showcase-hero h1 {
    max-width: 920px;
    margin-left: auto;
    margin-right: auto;
}

.showcase-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 1.5rem;
}

.capability-card {
    background: radial-gradient(circle at top left, rgba(59, 126, 255, 0.08), transparent 45%), var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 2rem;
    transition: all 0.25s ease;
}

.capability-card:hover {
    border-color: rgba(32, 212, 255, 0.38);
    transform: translateY(-2px);
    box-shadow: 0 18px 44px rgba(0, 0, 0, 0.28);
}

.capability-card.featured {
    grid-row: span 2;
    display: flex;
    flex-direction: column;
    justify-content: center;
    background: radial-gradient(circle at top left, rgba(32, 212, 255, 0.14), transparent 48%), var(--bg-card);
}

.capability-card h3 {
    font-size: 1.55rem;
    margin-bottom: 1rem;
}

.capability-card p {
    margin-bottom: 1.25rem;
}

.capability-line {
    font-family: var(--font-code);
    font-size: 0.78rem;
    color: var(--accent-cyan);
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
    margin: 1rem 0 1.25rem 0;
}

.showcase-flow {
    display: grid;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    gap: 0.75rem;
    margin-bottom: 3rem;
}

.path-step {
    position: relative;
    min-height: 13rem;
    padding: 1.25rem;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: rgba(17, 28, 53, 0.72);
}

.path-step span {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 2.25rem;
    height: 2.25rem;
    margin-bottom: 1rem;
    border: 1px solid rgba(32, 212, 255, 0.28);
    border-radius: 999px;
    color: var(--accent-cyan);
    font-family: var(--font-code);
    font-size: 0.74rem;
}

.path-step h3 {
    margin-bottom: 0.75rem;
}

.path-step p {
    font-size: 0.9rem;
}

.home-bridge {
    max-width: 820px;
    margin: 0 auto;
    padding: 2.5rem;
    border: 1px solid rgba(32, 212, 255, 0.22);
    border-radius: 12px;
    background: radial-gradient(circle at top, rgba(32, 212, 255, 0.1), transparent 55%), var(--bg-card);
    text-align: center;
}

.home-bridge h3 {
    font-size: 1.6rem;
    margin-bottom: 1rem;
}

.home-bridge p {
    margin: 0 auto 1.5rem auto;
    max-width: 650px;
}

.decision-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
}

.decision-card {
    display: block;
    min-height: 12rem;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-card);
    color: var(--text-primary);
}

.decision-card:hover {
    color: var(--text-primary);
    border-color: rgba(32, 212, 255, 0.38);
    background: rgba(32, 212, 255, 0.06);
}

.decision-card h3 {
    margin: 0.75rem 0;
    font-size: 1.2rem;
}

.mini-label {
    font-family: var(--font-code);
    font-size: 0.72rem;
    color: var(--accent-cyan);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.narrow {
    max-width: 900px;
}

.discipline-hero h1 {
    max-width: 900px;
    margin-left: auto;
    margin-right: auto;
}

.invariant-panel {
    max-width: 760px;
    margin: 2.5rem auto 0 auto;
    padding: 2.5rem;
    border: 1px solid rgba(32, 212, 255, 0.24);
    border-radius: 14px;
    background: radial-gradient(circle at top, rgba(32, 212, 255, 0.12), transparent 58%), var(--bg-card);
    box-shadow: 0 28px 70px rgba(0, 0, 0, 0.3);
}

.invariant-panel h2 {
    margin: 0.75rem 0;
    font-size: 2rem;
}

.story-block {
    max-width: 780px;
    margin: 0 auto 2.5rem auto;
}

.story-block p {
    margin-bottom: 1.4rem;
    font-size: 1.16rem;
    line-height: 1.8;
    color: var(--text-primary);
}

.definition-band,
.operational-band,
.why-ai-panel {
    max-width: 840px;
    margin: 0 auto;
    padding: 2.5rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: var(--bg-card);
}

.definition-band h3,
.operational-band h3,
.why-ai-panel h3 {
    margin: 0.75rem 0 1rem 0;
    font-size: 1.55rem;
}

.definition-band p,
.operational-band p,
.why-ai-panel p {
    margin-bottom: 1.25rem;
}

.consequence-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 1rem;
}

.consequence-grid article,
.public-work-card {
    min-height: 15rem;
    padding: 1.5rem;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: rgba(17, 28, 53, 0.72);
}

.consequence-grid h3,
.public-work-card h3 {
    font-size: 1.2rem;
    margin-bottom: 0.75rem;
}

.consequence-grid p,
.public-work-card p {
    margin-bottom: 1rem;
}

.primitive-panel {
    display: grid;
    grid-template-columns: 0.9fr 1.1fr;
    gap: 1.5rem;
    align-items: stretch;
    margin-bottom: 1.5rem;
}

.primitive-panel > div {
    padding: 2rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: var(--bg-card);
}

.primitive-panel h3 {
    margin: 0.75rem 0 1rem 0;
    font-size: 1.6rem;
}

.primitive-sequence {
    display: grid;
    grid-template-columns: 1fr;
    gap: 0.6rem;
}

.primitive-sequence span {
    display: block;
    padding: 0.75rem 1rem;
    border: 1px solid rgba(32, 212, 255, 0.16);
    border-radius: 999px;
    color: var(--text-primary);
    font-family: var(--font-code);
    font-size: 0.82rem;
    text-align: center;
    background: rgba(32, 212, 255, 0.05);
}

.why-ai-panel {
    margin-top: 1.5rem;
}

.why-ai-panel blockquote {
    margin-top: 1.5rem;
    padding-left: 1.25rem;
    border-left: 3px solid var(--accent-cyan);
    color: var(--text-primary);
    font-size: 1.15rem;
    line-height: 1.7;
}

.public-work-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 1rem;
    margin-bottom: 2rem;
}

.public-work-card {
    display: block;
    color: var(--text-primary);
}

.public-work-card:hover {
    color: var(--text-primary);
    border-color: rgba(32, 212, 255, 0.38);
    background: rgba(32, 212, 255, 0.06);
}

.operational-band {
    text-align: center;
    background: radial-gradient(circle at top, rgba(59, 126, 255, 0.12), transparent 60%), var(--bg-card);
}

.reference-hero h1 {
    max-width: 850px;
    margin-left: auto;
    margin-right: auto;
}

.reference-grid {
    display: grid;
    gap: 1.5rem;
}

.reference-grid.two {
    grid-template-columns: repeat(2, minmax(0, 1fr));
}

.reference-card {
    display: block;
    padding: 2rem;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    background: radial-gradient(circle at top left, rgba(59, 126, 255, 0.08), transparent 48%), var(--bg-card);
}

.reference-card-wide {
    max-width: 880px;
    margin: 0 auto;
}

.reference-card h3 {
    margin: 0.75rem 0 1rem 0;
    font-size: 1.55rem;
}

.reference-card p {
    max-width: 780px;
    margin-bottom: 1.5rem;
    font-size: 1rem;
    line-height: 1.7;
}

.reference-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.fusion-pill-rail {
    position: absolute;
    top: 7rem;
    right: max(2rem, calc((100vw - 1100px) / 2));
    z-index: 5;
    display: flex;
    flex-direction: column;
    align-items: flex-end;
    gap: 0.75rem;
}

.fusion-pill-rail .meta-pill {
    min-width: 10.5rem;
    justify-content: center;
    color: var(--accent-cyan);
    border-color: rgba(32, 212, 255, 0.26);
    background: rgba(32, 212, 255, 0.06);
}

.fusion-pill-rail .meta-pill:hover,
.fusion-pill-rail .meta-pill.active {
    color: var(--text-primary);
    border-color: rgba(32, 212, 255, 0.55);
    background: rgba(32, 212, 255, 0.12);
    box-shadow: 0 0 20px rgba(32, 212, 255, 0.18);
}

.fusion-pill-rail .meta-popover {
    left: auto;
    right: 0;
    transform: translateY(-5px);
}

.fusion-pill-rail .meta-popover.visible {
    transform: translateY(0);
}

.fusion-pill-rail .meta-popover::before,
.fusion-pill-rail .meta-popover::after {
    left: auto;
    right: 2rem;
    transform: none;
}

.btn {
    display: inline-block;
    background-color: var(--accent-blue);
    color: var(--text-primary);
    padding: 0.75rem 1.5rem;
    border-radius: 6px;
    font-weight: 600;
    font-size: 0.95rem;
    transition: all 0.2s ease;
    border: 1px solid var(--accent-blue);
    cursor: pointer;
}

.btn:hover {
    background-color: var(--accent-blue-hover);
    border-color: var(--accent-blue-hover);
    box-shadow: 0 0 20px rgba(0, 112, 243, 0.3);
    color: var(--text-primary);
}

.btn-secondary {
    background-color: transparent;
    border-color: var(--border-color);
    margin-left: 1rem;
}

.btn-secondary:hover {
    background-color: rgba(255, 255, 255, 0.05);
    border-color: var(--text-secondary);
    box-shadow: none;
}

/* Sections */
section {
    padding: 6rem 0;
    border-bottom: 1px solid var(--border-color);
}

.section-title {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title h2 {
    font-size: 2.25rem;
    margin-bottom: 1rem;
}

.section-title p {
    font-size: 1.1rem;
    max-width: 600px;
    margin: 0 auto;
}

/* Grid & Cards */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 2.5rem;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.card:hover {
    border-color: var(--accent-blue);
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.2);
    transform: translateY(-2px);
}

.card-step {
    font-family: var(--font-code);
    font-size: 0.9rem;
    color: var(--accent-blue);
    margin-bottom: 1rem;
    font-weight: 700;
}

.card h3 {
    font-size: 1.4rem;
    margin-bottom: 1rem;
}

.card p {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

#genesis {
    position: relative;
    overflow: hidden;
}

#genesis::before {
    content: '';
    position: absolute;
    top: -200px;
    left: 50%;
    transform: translateX(-50%);
    width: 900px;
    height: 900px;
    background: radial-gradient(circle, rgba(59,126,255,0.1) 0%, transparent 65%);
    z-index: -1;
    pointer-events: none;
}

/* Origin Timeline Section */
.origin-flow {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.origin-flow::before {
    content: '';
    position: absolute;
    left: 2rem;
    top: 0;
    bottom: 0;
    width: 2px;
    background-color: var(--border-color);
    z-index: 1;
}

.flow-step {
    display: flex;
    gap: 2rem;
    position: relative;
    z-index: 2;
}

.flow-badge {
    width: 4rem;
    height: 4rem;
    background-color: var(--bg-card);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-heading);
    font-weight: 800;
    font-size: 1.1rem;
    color: var(--text-primary);
    flex-shrink: 0;
    transition: all 0.3s ease;
}

.flow-step:hover .flow-badge {
    border-color: var(--accent-blue);
    color: var(--accent-blue);
    box-shadow: 0 0 15px rgba(0, 112, 243, 0.2);
}

.flow-content {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 8px;
    flex-grow: 1;
}

.flow-content h3 {
    margin-bottom: 0.5rem;
}

.flow-content span {
    font-family: var(--font-code);
    font-size: 0.8rem;
    color: var(--text-muted);
}

/* Equations Grid */
.eq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 1.5rem;
}

.eq-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 2rem;
    border-radius: 8px;
    text-align: center;
}

.eq-formula {
    font-family: var(--font-code);
    font-size: 1.25rem;
    font-weight: bold;
    color: var(--text-primary);
    margin-bottom: 0.75rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
}

.eq-card p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Five Layers Diagram */
.layers-diagram {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    max-width: 700px;
    margin: 0 auto;
}

.layer-bar {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 1.5rem 2rem;
    border-radius: 6px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    transition: all 0.3s ease;
}

.layer-bar:hover {
    border-color: var(--accent-blue);
    transform: scale(1.01);
    box-shadow: 0 0 20px rgba(0, 112, 243, 0.1);
}

.layer-info {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.layer-icon {
    font-size: 1.5rem;
}

.layer-name {
    font-family: var(--font-heading);
    font-weight: 700;
    font-size: 1.1rem;
}

.layer-desc {
    font-size: 0.9rem;
    color: var(--text-secondary);
}

/* Callout Section */
.callout-box {
    background: radial-gradient(circle at top left, rgba(0, 112, 243, 0.1), transparent), var(--bg-card);
    border: 1px solid var(--border-color);
    padding: 4rem;
    border-radius: 12px;
    text-align: center;
    max-width: 850px;
    margin: 0 auto;
}

.callout-box h2 {
    font-size: 1.8rem;
    margin-bottom: 1.5rem;
    font-weight: 700;
    line-height: 1.4;
}

.callout-box p {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 650px;
    margin: 0 auto;
}

/* Footer & CTA */
footer {
    padding: 6rem 0;
    background-color: #050810;
    border-top: 1px solid var(--border-color);
}

.footer-cta {
    text-align: center;
    margin-bottom: 4rem;
}

.footer-cta h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.footer-cta p {
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

.footer-bottom {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 2rem;
    color: var(--text-muted);
    font-size: 0.85rem;
}

/* Code Snippets */
pre {
    background-color: var(--bg-code);
    border: 1px solid var(--border-color);
    padding: 1.25rem;
    border-radius: 6px;
    overflow-x: auto;
    font-family: var(--font-code);
    font-size: 0.85rem;
    color: #E2E8F0;
    text-align: left;
}

/* Responsiveness */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    .hero p {
        font-size: 1.1rem;
    }
    .btn-secondary {
        margin-top: 1rem;
        margin-left: 0;
        display: block;
    }
    .fusion-pill-rail {
        position: static;
        flex-direction: column;
        align-items: center;
        margin: 0 auto 2rem auto;
    }
    .fusion-pill-rail .meta-pill {
        min-width: 13rem;
    }
    .fusion-pill-rail .meta-popover {
        left: 50%;
        right: auto;
        transform: translateX(-50%) translateY(-5px);
    }
    .fusion-pill-rail .meta-popover.visible {
        transform: translateX(-50%) translateY(0);
    }
    .fusion-pill-rail .meta-popover::before,
    .fusion-pill-rail .meta-popover::after {
        left: 50%;
        right: auto;
        transform: translateX(-50%);
    }
    .showcase-grid,
    .showcase-flow,
    .decision-grid,
    .consequence-grid,
    .primitive-panel,
    .public-work-grid,
    .reference-grid.two {
        grid-template-columns: 1fr;
    }
    .capability-card.featured {
        grid-row: auto;
    }
    .path-step {
        min-height: auto;
    }
    .callout-box {
        padding: 2rem;
    }
    .page-guide-panel {
        border-radius: 14px;
        margin-top: 1.5rem;
    }
    .page-guide-panel ol {
        grid-template-columns: 1fr;
    }
    .layer-bar {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }
    .footer-bottom {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
    nav ul {
        display: none; /* simple nav hide for mobile preview */
    }
}

/* Interactive Metadata Pills and Popovers */
.meta-row {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    flex-wrap: wrap;
    margin-bottom: 2.5rem;
}

.meta-pill-container {
    position: relative;
    display: inline-block;
}

.meta-pill {
    font-family: var(--font-code);
    font-size: 0.76rem;
    font-weight: 500;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.04em;
    border: 1px solid var(--border-color);
    padding: 0.35rem 0.9rem;
    border-radius: 9999px;
    background-color: rgba(30, 47, 82, 0.2);
    display: inline-flex;
    align-items: center;
    gap: 6px;
    transition: all 0.25s ease;
    user-select: none;
}

.meta-pill.dropdown {
    cursor: pointer;
    background-color: rgba(59, 126, 255, 0.05);
    border-color: rgba(59, 126, 255, 0.2);
    color: var(--accent-blue);
}

.meta-pill.dropdown:hover {
    background-color: rgba(59, 126, 255, 0.12);
    border-color: var(--accent-blue);
    box-shadow: 0 0 10px rgba(59, 126, 255, 0.2);
}

.meta-pill.dropdown.active {
    background-color: rgba(59, 126, 255, 0.18);
    border-color: var(--accent-blue);
    color: #FFFFFF;
    box-shadow: 0 0 15px rgba(59, 126, 255, 0.3);
}

.meta-popover {
    display: none;
    position: absolute;
    top: calc(100% + 12px);
    left: 50%;
    transform: translateX(-50%) translateY(-5px);
    width: 310px;
    background: rgba(13, 21, 38, 0.96);
    border: 1px solid var(--border-color);
    border-radius: 10px;
    padding: 1.25rem;
    box-shadow: 0 12px 36px rgba(0, 0, 0, 0.65), 0 0 0 1px rgba(59, 126, 255, 0.08);
    z-index: 150;
    text-align: left;
    backdrop-filter: blur(12px);
    transition: opacity 0.2s ease, transform 0.2s ease;
    opacity: 0;
    pointer-events: none;
}

.meta-popover.visible {
    display: block;
    opacity: 1;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}

.meta-popover h4 {
    font-family: var(--font-code);
    font-size: 0.8rem;
    color: var(--accent-blue);
    margin-bottom: 0.5rem;
    letter-spacing: 0.05em;
    text-transform: uppercase;
}

.meta-popover p {
    font-size: 0.85rem;
    line-height: 1.5;
    color: var(--text-secondary);
}

.meta-popover ul {
    margin-top: 0.5rem;
    padding-left: 1rem;
    list-style-type: disc;
}

.meta-popover li {
    font-size: 0.8rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

/* Arrow indicator pointing up at the pill */
.meta-popover::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border-width: 6px;
    border-style: solid;
    border-color: transparent transparent var(--border-color) transparent;
}

.meta-popover::after {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%);
    border-width: 5px;
    border-style: solid;
    border-color: transparent transparent rgba(13, 21, 38, 0.96) transparent;
}

@media (max-width: 480px) {
    .meta-popover {
        width: 280px;
    }
}

/* Header Specific Popover Positioning (Top-Right) */
.header-guide {
    display: inline-block;
}

.header-guide .meta-popover {
    top: calc(100% + 15px);
    right: 0;
    left: auto;
    transform: translateY(-5px);
}

.header-guide .meta-popover.visible {
    transform: translateY(0);
}

.header-guide .meta-popover::before {
    left: auto;
    right: 24px;
    transform: none;
}

.header-guide .meta-popover::after {
    left: auto;
    right: 25px;
    transform: none;
}

.header-guide .meta-popover a {
    color: var(--accent-blue);
    text-decoration: underline;
}

.header-guide .meta-popover a:hover {
    color: var(--accent-blue-hover);
}

/* Academic & Research Page Styles */
.divider {
    border: 0;
    border-top: 1px solid var(--border-color);
    margin: 4rem 0;
    position: relative;
}

.divider::after {
    content: '◆';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background-color: var(--bg-main);
    padding: 0 1rem;
    color: var(--accent-blue);
    font-size: 0.8rem;
}

.manifesto-block {
    border-left: 2px solid var(--accent-blue);
    padding-left: 2rem;
    margin: 3rem 0;
}

.manifesto-block blockquote {
    font-size: 1.4rem;
    font-weight: 500;
    line-height: 1.6;
    color: var(--text-primary);
}

.academic-list {
    list-style: none;
    padding: 0;
}

.academic-list li {
    position: relative;
    padding-left: 1.75rem;
    margin-bottom: 1.5rem;
    font-size: 1.05rem;
    line-height: 1.6;
}

.academic-list li::before {
    content: '▪';
    position: absolute;
    left: 0;
    color: var(--accent-blue);
    font-size: 1.2rem;
    line-height: 1;
}

.pub-card {
    background-color: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    transition: all 0.3s ease;
}

.pub-card:hover {
    border-color: var(--accent-blue);
    box-shadow: 0 4px 20px rgba(59, 126, 255, 0.1);
}

.pub-card h3 {
    font-size: 1.15rem;
    margin-bottom: 0.5rem;
    font-family: var(--font-code);
}

.pub-card p {
    font-size: 0.9rem;
    margin-bottom: 1.5rem;
    flex-grow: 1;
}

.pub-actions {
    display: flex;
    gap: 0.75rem;
}

.pub-btn {
    flex: 1;
    text-align: center;
    font-family: var(--font-code);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    padding: 0.5rem 0.25rem;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    background: transparent;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    cursor: pointer;
}

.pub-btn:hover {
    border-color: var(--accent-blue);
    color: #FFFFFF;
    background: rgba(59, 126, 255, 0.05);
}

.industry-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin-top: 3rem;
}

.industry-card {
    background-color: rgba(30, 47, 82, 0.1);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 1.5rem;
    transition: all 0.2s ease;
}

.industry-card:hover {
    border-color: rgba(59, 126, 255, 0.3);
    background-color: rgba(30, 47, 82, 0.15);
}

.industry-card h4 {
    font-family: var(--font-code);
    font-size: 0.85rem;
    color: var(--accent-blue);
    margin-bottom: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.industry-card p {
    font-size: 0.85rem;
    line-height: 1.5;
}