:root {
  --bg-color: #050508;
  --surface-color: rgba(15, 15, 20, 0.6);
  --surface-hover: rgba(25, 25, 30, 0.8);
  --border-light: rgba(255, 255, 255, 0.08);
  --border-glow: rgba(139, 92, 246, 0.3);
  
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  
  --color-violet: #8b5cf6;
  --color-indigo: #6366f1;
  --color-teal: #14b8a6;
  
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
    font-family: var(--font-sans);
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Base Styles & Utility */
.fade-in-up { opacity: 0; transform: translateY(20px); transition: all 0.8s cubic-bezier(0.16, 1, 0.3, 1); }
.fade-in { opacity: 0; transition: opacity 1s ease-in-out; }
.is-visible { opacity: 1; transform: translateY(0); }
.delay-1 { transition-delay: 0.15s; }
.delay-2 { transition-delay: 0.3s; }
.delay-3 { transition-delay: 0.45s; }

/* Background Mesh / Glows */
.ambient-glow {
    position: absolute;
    border-radius: 50%;
    filter: blur(120px);
    z-index: -2;
    pointer-events: none;
    opacity: 0.4;
}
.glow-1 {
    width: 60vw; height: 60vw;
    background: radial-gradient(circle, rgba(99,102,241,0.15) 0%, transparent 70%);
    top: -20%; left: -10%;
}
.glow-2 {
    width: 50vw; height: 50vw;
    background: radial-gradient(circle, rgba(139,92,246,0.1) 0%, transparent 70%);
    top: 30%; right: -10%;
}
.signal-mesh {
    position: fixed;
    top:0; left:0; width:100%; height:100%;
    background-image: linear-gradient(var(--border-light) 1px, transparent 1px),
                      linear-gradient(90deg, var(--border-light) 1px, transparent 1px);
    background-size: 40px 40px;
    z-index: -3; opacity: 0.15;
    mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
    -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
}

/* Nav */
.site-nav {
    position: fixed; top: 0; width: 100%;
    padding: 16px 0; z-index: 100;
    transition: all 0.3s ease;
    border-bottom: 1px solid transparent;
}
.site-nav.scrolled {
    background: rgba(5, 5, 8, 0.8);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border-light);
}
.nav-container {
    max-width: 1200px; margin: 0 auto;
    padding: 0 32px;
    display: flex; justify-content: space-between; align-items: center;
}
.nav-brand { display: flex; align-items: center; gap: 12px; }
.brand-logo { height: 28px; width: auto; }
.brand-logo.sm { height: 20px; }
.brand-badge {
    font-size: 0.75rem; color: var(--text-muted);
    letter-spacing: 0.5px; text-transform: uppercase; border-left: 1px solid var(--border-light); padding-left: 12px;
}
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a:not(.btn) {
    color: var(--text-secondary); text-decoration: none;
    font-size: 0.875rem; font-weight: 500; transition: color 0.2s;
}
.nav-links a:hover:not(.btn) { color: var(--text-primary); }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center;
    border-radius: 8px; font-weight: 500; font-size: 0.875rem;
    text-decoration: none; transition: all 0.2s;
    padding: 10px 20px;
    cursor: pointer;
}
.btn-sm { padding: 8px 16px; font-size: 0.8rem; }
.btn-lg { padding: 14px 28px; font-size: 1rem; }
.btn-primary {
    background: var(--text-primary); color: #000 !important;
    box-shadow: 0 0 0 1px rgba(255,255,255,0.1), 0 4px 14px rgba(255,255,255,0.1);
}
.btn-primary:hover { background: #e2e8f0; transform: translateY(-1px); }
.btn-outline {
    background: var(--surface-color); color: var(--text-primary);
    border: 1px solid var(--border-light); box-shadow: 0 2px 8px rgba(0,0,0,0.2);
    backdrop-filter: blur(8px);
}
.btn-outline:hover {
    background: var(--surface-hover); border-color: rgba(255,255,255,0.2);
}

/* Sections */
main { padding-top: 140px; }
.section-container { max-width: 1200px; margin: 0 auto; padding: 100px 32px; }
.section-header { margin-bottom: 64px; }
.section-title { font-size: 2.5rem; font-weight: 600; letter-spacing: -0.02em; margin-bottom: 16px; }
.section-desc { color: var(--text-secondary); font-size: 1.125rem; max-width: 640px; }
.text-center { text-align: center; }
.text-center .section-desc { margin-left: auto; margin-right: auto; }

/* Hero */
.hero-container {
    max-width: 1200px; margin: 0 auto; padding: 40px 32px 120px;
    display: grid; grid-template-columns: 1fr 1fr; gap: 64px; align-items: center;
}
.hero-title {
    font-size: 4.5rem; font-weight: 600; line-height: 1.1; letter-spacing: -0.03em; margin-bottom: 24px;
}
.text-glow {
    background: linear-gradient(135deg, #f8fafc 0%, #94a3b8 100%);
    -webkit-background-clip: text; -webkit-text-fill-color: transparent;
    text-shadow: 0 0 40px rgba(255,255,255,0.1);
}
.hero-subtitle {
    font-size: 1.25rem; color: var(--text-secondary); margin-bottom: 40px; max-width: 480px;
}
.hero-actions { display: flex; gap: 16px; margin-bottom: 32px; }
.hero-trust { font-size: 0.875rem; color: var(--text-muted); border-left: 2px solid var(--border-light); padding-left: 12px; }

/* App Window Mockup */
.app-window {
    background: #0d0d12; border: 1px solid var(--border-light); border-radius: 12px;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5), 0 0 0 1px rgba(255,255,255,0.02);
    overflow: hidden; display: flex; flex-direction: column;
}
.app-header {
    height: 48px; border-bottom: 1px solid var(--border-light); background: rgba(255,255,255,0.02);
    display: flex; align-items: center; padding: 0 16px; gap: 16px;
}
.window-controls { display: flex; gap: 8px; }
.window-controls span { width: 10px; height: 10px; border-radius: 50%; background: #334155; }
.window-title { color: var(--text-muted); font-size: 0.8rem; font-family: monospace; }
.app-body { display: flex; height: 380px; }
.app-sidebar { width: 64px; border-right: 1px solid var(--border-light); padding: 16px 0; display: flex; flex-direction: column; align-items: center; gap: 16px; background: rgba(0,0,0,0.2); }
.nav-item { width: 32px; height: 32px; border-radius: 6px; background: var(--surface-color); }
.nav-item.active { background: rgba(139, 92, 246, 0.2); border: 1px solid rgba(139, 92, 246, 0.4); }
.app-main { flex: 1; padding: 24px; display: flex; flex-direction: column; gap: 24px; background: linear-gradient(180deg, rgba(255,255,255,0.0) 0%, rgba(255,255,255,0.02) 100%); }
.audio-player-mock { height: 48px; border-radius: 8px; border: 1px solid var(--border-light); background: rgba(0,0,0,0.3); display: flex; align-items: center; padding: 0 16px; gap: 16px; }
.play-btn { width: 24px; height: 24px; border-radius: 50%; background: var(--color-violet); box-shadow: 0 0 10px var(--color-violet); }
.progress-bar { flex: 1; height: 4px; background: var(--surface-color); border-radius: 2px; overflow: hidden; }
.progress-fill { width: 45%; height: 100%; background: var(--color-violet); }
.time { font-size: 0.75rem; color: var(--text-muted); font-variant-numeric: tabular-nums; }
.dashboard-grid { display: grid; grid-template-columns: 2fr 1fr; gap: 16px; flex: 1; }
.card { background: rgba(255,255,255,0.02); border: 1px solid var(--border-light); border-radius: 8px; padding: 16px; }
.card-header h4 { font-size: 0.875rem; font-weight: 500; color: #fff; }
.card-subtitle { font-size: 0.75rem; color: var(--text-muted); display: block; margin-top: 4px; }
.timeline-card { display: flex; flex-direction: column; }
.timeline-vis { flex: 1; margin-top: 16px; display: flex; align-items: flex-end; gap: 2px; }
.t-bar { width: 4px; background: var(--color-indigo); border-radius: 2px 2px 0 0; opacity: 0.8; }
.metrics-column { display: flex; flex-direction: column; gap: 12px; }
.metric-card { flex: 1; display: flex; flex-direction: column; justify-content: center; position: relative; overflow: hidden; }
.metric-val { font-size: 1.5rem; font-weight: 600; color: #fff; line-height: 1; margin: 8px 0 4px; }
.metric-lbl { font-size: 0.7rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; }
.confidence-high { border-color: rgba(20, 184, 166, 0.3); background: rgba(20, 184, 166, 0.05); }
.confidence-high .metric-val { color: var(--color-teal); }
.unit { font-size: 0.75rem; color: var(--text-muted); font-weight: 400; margin-left: 4px; }

/* Callout / What you're seeing */
.composition-container { position: relative; height: 500px; margin-top: 64px; }
.central-screenshot { position: absolute; top:50%; left:50%; transform: translate(-50%, -50%); width: 600px; height: 340px; background: #0f1015; border: 1px solid var(--border-light); border-radius: 12px; box-shadow: 0 20px 40px rgba(0,0,0,0.6); }
.pipeline-mock { padding: 40px; display: flex; flex-direction: column; gap: 24px; height: 100%; justify-content: center; }
.vis-layer { height: 40px; border-radius: 6px; border: 1px dashed var(--border-light); background: rgba(255,255,255,0.01); }
.vis-layer.waveform-layer { background: linear-gradient(90deg, rgba(99,102,241,0.2) 0%, transparent 100%); border-style: solid; }
.vis-layer.tokens-layer { display: flex; gap: 8px; border: none; background: transparent; }
.vis-layer.tokens-layer::before { content:''; flex:1; background:var(--surface-color); border-radius:4px; border:1px solid var(--border-light); }
.vis-layer.tokens-layer::after { content:''; flex:2; background:rgba(139,92,246,0.1); border-radius:4px; border:1px solid rgba(139,92,246,0.3); }
.vis-layer.interpretation-layer { background: var(--surface-color); border: 1px solid var(--border-light); height: 80px; }

.callout { position: absolute; display: flex; align-items: center; gap: 12px; color: var(--text-secondary); font-size: 0.875rem; }
.dot { width: 6px; height: 6px; border-radius: 50%; background: var(--color-violet); box-shadow: 0 0 8px var(--color-violet); }
.callout-1 { top: 20%; left: 10%; }
.callout-2 { top: 40%; left: 5%; }
.callout-3 { bottom: 20%; left: 15%; }
.callout-4 { top: 15%; right: 10%; flex-direction: row-reverse; }
.callout-5 { top: 45%; right: 5%; flex-direction: row-reverse; }
.callout-6 { bottom: 25%; right: 15%; flex-direction: row-reverse; }

/* Difference */
.difference-section .section-container { padding: 80px 32px; }
.comparison-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.comp-col { background: var(--surface-color); border: 1px solid var(--border-light); border-radius: 16px; padding: 48px; position: relative; overflow: hidden; }
.comp-col.auravoxa { background: rgba(15, 15, 20, 0.8); border-color: rgba(139, 92, 246, 0.2); }
.glow-bg { position: absolute; top:0; left:50%; transform:translateX(-50%); width:80%; height:100px; background:radial-gradient(ellipse, rgba(139,92,246,0.15) 0%, transparent 70%); }
.col-title { font-size: 1.25rem; font-weight: 500; margin-bottom: 40px; text-align: center; color: var(--text-muted); }
.col-title.highlight { color: #fff; }
.flow-diagram { display: flex; flex-direction: column; align-items: center; gap: 16px; margin-bottom: 40px; font-family: monospace; font-size: 0.875rem; }
.node { padding: 10px 24px; border-radius: 6px; background: rgba(0,0,0,0.5); border: 1px solid var(--border-light); min-width: 140px; text-align: center; }
.node.dim { color: var(--text-muted); }
.node.highlight-node { background: rgba(139, 92, 246, 0.1); border-color: var(--color-violet); color: #fff; font-weight: 600; box-shadow: 0 0 20px rgba(139,92,246,0.2); }
.arrow { color: var(--text-muted); }
.arrow.active { color: var(--color-violet); }
.comp-desc { font-size: 0.95rem; color: var(--text-muted); text-align: center; line-height: 1.6; }
.comp-desc.highlight-desc { color: var(--text-secondary); }

/* Method */
.method-cards { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.glass-card { background: rgba(255,255,255,0.015); border: 1px solid var(--border-light); border-radius: 16px; padding: 32px; backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); transition: transform 0.3s, border-color 0.3s; }
.glass-card:hover { transform: translateY(-2px); border-color: rgba(255,255,255,0.15); }
.card-icon { font-family: monospace; font-size: 1.25rem; color: var(--text-muted); margin-bottom: 24px; }
.glass-card h4 { font-size: 1.125rem; font-weight: 500; margin-bottom: 12px; color: #fff; }
.glass-card p { font-size: 0.95rem; color: var(--text-secondary); }
.start-2 { grid-column: span 1; }

/* Preview Strip */
.preview-strip { overflow: hidden; padding: 60px 0; background: rgba(0,0,0,0.2); border-top: 1px solid var(--border-light); border-bottom: 1px solid var(--border-light); }
.strip-track { display: flex; gap: 24px; padding: 0 40px; width: max-content; }
.strip-pane { width: 360px; height: 240px; background: #0c0c10; border: 1px solid var(--border-light); border-radius: 8px; padding: 20px; box-shadow: 0 10px 30px rgba(0,0,0,0.5); }
.mock-header { font-size: 0.8rem; color: var(--text-muted); text-transform: uppercase; letter-spacing: 0.5px; border-bottom: 1px solid var(--border-light); padding-bottom: 12px; margin-bottom: 16px; }
.mock-stats { display: flex; gap: 12px; margin-bottom: 16px; }
.m-stat { flex:1; background: var(--surface-color); padding: 12px; border-radius: 6px; font-size: 0.7rem; color: var(--text-muted); }
.m-stat span { display: block; font-size: 1.1rem; color: #fff; font-weight: 600; margin-bottom: 4px; }
.m-stat.highlight { border: 1px solid rgba(20, 184, 166, 0.3); }
.mock-list { display: flex; flex-direction: column; gap: 8px; }
.m-row { display: flex; justify-content: space-between; padding: 10px; background: var(--surface-color); border-radius: 4px; font-size: 0.75rem; font-family: monospace; }
.badge { color: var(--color-teal); background: rgba(20, 184, 166, 0.1); padding: 2px 6px; border-radius: 4px; }
.chart-mock { height: 120px; border-bottom: 1px solid var(--border-light); position: relative; }
.marker { display: flex; justify-content: space-between; padding: 12px; border: 1px solid var(--border-light); border-radius: 6px; font-size: 0.8rem; margin-bottom: 8px; background: rgba(139, 92, 246, 0.05); }

/* Use Cases */
.usecase-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }
.usecase-card { padding: 40px; background: transparent; border-top: 1px solid var(--border-light); }
.uc-icon { font-size: 1.5rem; margin-bottom: 24px; opacity: 0.8; }
.usecase-card h4 { font-size: 1.25rem; font-weight: 500; margin-bottom: 16px; color: #fff; }
.usecase-card p { font-size: 1rem; color: var(--text-secondary); max-width: 400px; line-height: 1.6; }

/* Ecosystem */
.ecosystem-section .section-container { max-width: 800px; text-align: center; }
.ecosystem-box { padding: 64px 40px; border: 1px solid var(--border-light); border-radius: 24px; background: linear-gradient(180deg, rgba(255,255,255,0.02) 0%, transparent 100%); }
.ecosystem-box .section-title { font-size: 2rem; }
.lineage-diagram { margin-top: 48px; display: inline-flex; flex-direction: column; align-items: center; }
.l-node { font-size: 0.875rem; color: var(--text-secondary); padding: 8px 16px; border: 1px solid var(--border-light); border-radius: 4px; background: #000; }
.l-line { width: 1px; height: 32px; background: var(--border-light); }
.l-node.focus { color: #fff; border-color: var(--color-violet); background: rgba(139, 92, 246, 0.1); font-weight: 500; }
.l-line.focus { background: linear-gradient(180deg, var(--border-light) 0%, var(--color-violet) 100%); }

/* Governance */
.governance-section { border-top: 1px solid var(--border-light); background: rgba(0,0,0,0.3); }
.gov-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 32px; margin-top: 64px; }
.gov-item { text-align: center; }
.g-icon { font-size: 1.5rem; color: var(--text-muted); margin-bottom: 16px; }
.gov-item h5 { font-size: 1rem; font-weight: 500; margin-bottom: 12px; color: #fff; }
.gov-item p { font-size: 0.9rem; color: var(--text-secondary); }

/* Final CTA */
.final-cta { padding: 120px 32px; display: flex; justify-content: center; }
.cta-box { text-align: center; max-width: 600px; }
.cta-box h2 { font-size: 3rem; font-weight: 600; letter-spacing: -0.02em; margin-bottom: 24px; color: #fff; }
.cta-box p { font-size: 1.25rem; color: var(--text-secondary); margin-bottom: 40px; }
.cta-actions { display: flex; gap: 16px; justify-content: center; }

/* Footer */
.site-footer { border-top: 1px solid var(--border-light); padding: 64px 32px 32px; background: #000; }
.footer-container { max-width: 1200px; margin: 0 auto; display: flex; flex-direction: column; gap: 48px; }
.footer-brand { display: flex; align-items: center; gap: 12px; }
.muted { font-size: 0.75rem; color: var(--text-muted); }
.footer-links { display: flex; gap: 32px; }
.footer-links a { color: var(--text-secondary); text-decoration: none; font-size: 0.875rem; transition: color 0.2s; }
.footer-links a:hover { color: #fff; }
.footer-legal { font-size: 0.75rem; color: var(--text-muted); border-top: 1px solid var(--border-light); padding-top: 24px; }

/* Responsive */
@media (max-width: 900px) {
    .hero-container { grid-template-columns: 1fr; text-align: center; }
    .hero-subtitle { margin: 0 auto 40px; }
    .hero-actions { justify-content: center; }
    .hero-trust { display: inline-block; text-align: left; }
    .dashboard-grid { grid-template-columns: 1fr; }
    .composition-container { display: none; } /* simplify on mobile */
    .comparison-grid { grid-template-columns: 1fr; }
    .method-cards { grid-template-columns: 1fr; }
    .start-2 { grid-column: auto; }
    .usecase-grid { grid-template-columns: 1fr; }
    .gov-grid { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
    .nav-links { display: none; }
    .hero-title { font-size: 3rem; }
    .cta-actions, .hero-actions { flex-direction: column; }
    .footer-links { flex-wrap: wrap; }
}

/* --- MODAL STYLES --- */
.modal-overlay {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    background: rgba(0,0,0,0.8);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    z-index: 9999;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0;
    pointer-events: none;
    transition: all 0.3s ease;
}
.modal-overlay.active {
    opacity: 1;
    pointer-events: all;
}
.modal-content {
    background: rgba(14, 16, 20, 0.95);
    border: 1px solid rgba(255,255,255,0.1);
    padding: 2.5rem;
    border-radius: 12px;
    width: 90%;
    max-width: 500px;
    position: relative;
    transform: translateY(20px);
    transition: all 0.3s ease;
    box-shadow: 0 25px 50px -12px rgba(0,0,0,0.5);
}
.modal-overlay.active .modal-content {
    transform: translateY(0);
}
.modal-close {
    position: absolute;
    top: 1rem; right: 1.5rem;
    background: none; border: none;
    color: var(--text-muted);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color 0.2s;
}
.modal-close:hover { color: var(--text-light); }
.modal-header h3 { margin: 0 0 0.5rem; font-size: 1.5rem; color: #fff; }
.beta-form .form-group { margin-bottom: 1.5rem; text-align: left; }
.beta-form label {
    display: block; font-size: 0.85rem;
    color: var(--text-muted); margin-bottom: 0.4rem;
    font-weight: 500;
}
.beta-form input, .beta-form textarea {
    width: 100%;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.1);
    color: #fff;
    padding: 0.8rem 1rem;
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.95rem;
    transition: border-color 0.2s;
}
.beta-form input:focus, .beta-form textarea:focus {
    outline: none;
    border-color: var(--color-violet);
}
.beta-form textarea { resize: vertical; min-height: 100px; }