@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap');

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

:root {
    --bg: #0a0a0a;
    --surface: #141414;
    --border: #222;
    --text: #f0f0f0;
    --text-secondary: #888;
    --accent: #c4a882;
    --accent-glow: rgba(196, 168, 130, 0.15);
    --premium: #b8a0e0;
    --premium-glow: rgba(184, 160, 224, 0.12);
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    overflow-x: hidden;
}

.ambient {
    position: fixed;
    top: 0; left: 0; right: 0; bottom: 0;
    z-index: -1;
    background: 
        radial-gradient(ellipse at 20% 20%, rgba(196, 168, 130, 0.06) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(130, 160, 196, 0.04) 0%, transparent 50%),
        var(--bg);
}

/* Nav */
.nav {
    position: fixed;
    top: 0; left: 0; right: 0;
    z-index: 100;
    padding: 16px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: rgba(10, 10, 10, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(34, 34, 34, 0.6);
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text);
    font-weight: 600;
    font-size: 1rem;
}

.nav-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
}

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

.nav-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--text);
}

.nav-cta {
    padding: 7px 18px !important;
    background: var(--text) !important;
    color: var(--bg) !important;
    border-radius: 10px;
    font-weight: 600 !important;
    transition: all 0.2s !important;
}

.nav-cta:hover {
    opacity: 0.9;
    transform: translateY(-1px);
}

/* Hero */
.hero {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 120px 24px 80px;
}

.app-icon {
    width: 120px;
    height: 120px;
    border-radius: 27px;
    margin-bottom: 32px;
    box-shadow: 0 8px 40px rgba(0,0,0,0.5), 0 0 60px var(--accent-glow);
}

.hero h1 {
    font-size: clamp(2.5rem, 6vw, 4rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 8px;
    background: linear-gradient(135deg, var(--text) 0%, var(--accent) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero .subtitle {
    font-size: clamp(1.1rem, 2.5vw, 1.4rem);
    font-weight: 300;
    color: var(--text-secondary);
    margin-bottom: 40px;
    max-width: 500px;
}

.tagline {
    font-size: 0.95rem;
    color: var(--accent);
    letter-spacing: 0.15em;
    text-transform: uppercase;
    margin-bottom: 16px;
    font-weight: 500;
}

/* CTA */
.cta-group {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
    justify-content: center;
}

.cta-primary {
    display: inline-flex;
    align-items: center;
    gap: 10px;
    padding: 16px 36px;
    background: var(--text);
    color: var(--bg);
    text-decoration: none;
    border-radius: 14px;
    font-size: 1.05rem;
    font-weight: 600;
    transition: all 0.3s ease;
    letter-spacing: -0.01em;
}

.cta-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 30px rgba(255,255,255,0.15);
}

.cta-primary svg { width: 22px; height: 22px; }

.cta-secondary {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 28px;
    background: transparent;
    color: var(--text-secondary);
    text-decoration: none;
    border: 1px solid var(--border);
    border-radius: 12px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.cta-secondary:hover {
    border-color: var(--accent);
    color: var(--text);
}

/* ==================== BENTO ==================== */
.bento {
    padding: 80px 24px 40px;
    max-width: 960px;
    margin: 0 auto;
}

.bento-premium-section {
    padding-top: 40px;
}

.bento-header {
    text-align: center;
    margin-bottom: 40px;
}

.bento-header h2 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: 700;
    letter-spacing: -0.03em;
    margin-bottom: 8px;
}

.bento-label {
    font-size: 0.85rem;
    color: var(--accent);
    letter-spacing: 0.12em;
    text-transform: uppercase;
    font-weight: 600;
    margin-bottom: 8px;
}

.bento-label-premium {
    color: var(--premium);
}

.bento-sub {
    color: var(--text-secondary);
    font-size: 1.05rem;
    max-width: 480px;
    margin: 0 auto;
    font-weight: 300;
}

/* Grid */
.bento-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
}

/* Cards */
.bento-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 20px;
    padding: 28px;
    position: relative;
    transition: border-color 0.3s, transform 0.3s;
}

.bento-card:hover {
    border-color: rgba(196, 168, 130, 0.3);
    transform: translateY(-2px);
}

.bento-wide {
    grid-column: span 2;
}

.bento-tall {
    grid-row: span 2;
}

.bento-icon {
    font-size: 2rem;
    margin-bottom: 14px;
    line-height: 1;
}

.bento-card h3 {
    font-size: 1.05rem;
    font-weight: 600;
    margin-bottom: 8px;
    letter-spacing: -0.01em;
}

.bento-card p {
    font-size: 0.87rem;
    color: var(--text-secondary);
    line-height: 1.55;
}

/* Badge */
.badge {
    position: absolute;
    top: 16px;
    right: 16px;
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.05em;
    text-transform: uppercase;
    padding: 4px 10px;
    border-radius: 8px;
}

.badge-free {
    background: rgba(80, 200, 120, 0.12);
    color: #5ac87a;
    border: 1px solid rgba(80, 200, 120, 0.2);
}

/* Instrument chips inside bento card */
.instrument-chips {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-top: 16px;
}

.instrument-chips span {
    padding: 6px 14px;
    background: rgba(255,255,255,0.05);
    border: 1px solid rgba(255,255,255,0.08);
    border-radius: 10px;
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Mini list (cymatics) */
.mini-list {
    display: flex;
    flex-direction: column;
    gap: 6px;
    margin-top: 16px;
}

.mini-list span {
    padding: 8px 14px;
    background: rgba(255,255,255,0.04);
    border-radius: 10px;
    font-size: 0.82rem;
    color: var(--text-secondary);
    font-weight: 500;
}

/* Frequency grid */
.freq-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 12px;
    margin-top: 16px;
}

.freq-item {
    text-align: center;
    padding: 14px 8px;
    background: rgba(255,255,255,0.04);
    border-radius: 12px;
    border: 1px solid rgba(255,255,255,0.06);
}

.freq-hz {
    display: block;
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--accent);
    margin-bottom: 2px;
}

.freq-name {
    font-size: 0.75rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

/* Theme dots */
.theme-dots {
    display: flex;
    gap: 10px;
    margin-top: 16px;
    justify-content: center;
}

.dot {
    width: 28px;
    height: 28px;
    border-radius: 50%;
    border: 2px solid rgba(255,255,255,0.1);
}

.dot-mono { background: linear-gradient(135deg, #888, #333); }
.dot-sand { background: linear-gradient(135deg, #c4a882, #8a7050); }
.dot-green { background: linear-gradient(135deg, #5ac87a, #2a6040); }
.dot-ocean { background: linear-gradient(135deg, #5a9cc8, #2a4060); }

.dot-labels {
    text-align: center;
    margin-top: 8px;
    font-size: 0.75rem !important;
    color: #555 !important;
}

/* ==================== PREMIUM CARDS ==================== */
.bento-card-premium {
    background: linear-gradient(145deg, rgba(184, 160, 224, 0.06) 0%, var(--surface) 100%);
    border-color: rgba(184, 160, 224, 0.15);
}

.bento-card-premium:hover {
    border-color: rgba(184, 160, 224, 0.35);
    box-shadow: 0 4px 30px var(--premium-glow);
}

.bento-card-premium h3 {
    background: linear-gradient(135deg, var(--text) 0%, var(--premium) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ==================== SCIENCE ==================== */
.science {
    padding: 80px 24px;
    text-align: center;
}

.science h2 {
    font-size: clamp(1.5rem, 3.5vw, 2rem);
    font-weight: 600;
    margin-bottom: 16px;
    letter-spacing: -0.02em;
}

.science p {
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 32px;
    font-size: 1rem;
}

.tech-pills {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    max-width: 600px;
    margin: 0 auto;
}

.pill {
    padding: 8px 16px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 0.8rem;
    color: var(--text-secondary);
}

/* Research CTA */
.research-cta {
    padding: 80px 24px;
    text-align: center;
}

.research-cta h2 {
    font-size: clamp(1.5rem, 3.5vw, 2rem);
    font-weight: 600;
    margin-bottom: 12px;
    letter-spacing: -0.02em;
}

.research-cta p {
    color: var(--text-secondary);
    max-width: 550px;
    margin: 0 auto 28px;
    font-size: 1rem;
}

.research-stats {
    display: flex;
    justify-content: center;
    gap: 32px;
    margin-bottom: 32px;
    flex-wrap: wrap;
}

.stat { text-align: center; }

.stat-number {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent);
    display: block;
}

.stat-label {
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Footer */
footer {
    padding: 60px 24px;
    text-align: center;
    border-top: 1px solid var(--border);
}

footer .cta-primary { margin-bottom: 24px; }

.footer-meta { color: var(--text-secondary); font-size: 0.8rem; }
.footer-meta a { color: var(--text-secondary); text-decoration: none; }
.footer-meta a:hover { color: var(--accent); }

.languages {
    margin-top: 16px;
    font-size: 0.75rem;
    color: #555;
}

/* ==================== RESPONSIVE ==================== */
@media (max-width: 768px) {
    .bento-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .freq-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 480px) {
    .hero { padding: 100px 20px 60px; }
    .app-icon { width: 96px; height: 96px; border-radius: 22px; }
    .cta-primary { padding: 14px 28px; font-size: 1rem; }
    .nav-links a:not(.nav-cta) { display: none; }
    
    .bento-grid {
        grid-template-columns: 1fr;
    }
    
    .bento-wide,
    .bento-tall {
        grid-column: span 1;
        grid-row: span 1;
    }
    
    .freq-grid {
        grid-template-columns: repeat(2, 1fr);
    }
    
    .bento-card {
        padding: 22px;
    }
}