/* ===== RESET & BASE ===== */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --bg: #0a0a0f;
    --bg2: #111118;
    --bg3: #1a1a24;
    --surface: #16161f;
    --border: #2a2a3a;
    --text: #e4e4ed;
    --text2: #9494a8;
    --accent: #6366f1;
    --accent2: #818cf8;
    --accent-glow: rgba(99, 102, 241, 0.15);
    --green: #34d399;
    --cyan: #22d3ee;
    --pink: #f472b6;
    --radius: 12px;
    --radius-lg: 20px;
}

html { scroll-behavior: smooth; scroll-padding-top: 80px; }

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

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

/* ===== NAVIGATION ===== */
#navbar {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    background: rgba(10, 10, 15, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
}

.nav-inner {
    max-width: 1200px; margin: 0 auto; padding: 0 24px;
    display: flex; align-items: center; justify-content: space-between;
    height: 64px;
}

.nav-logo {
    font-weight: 700; font-size: 1.2rem; color: var(--text);
    text-decoration: none; display: flex; align-items: center; gap: 6px;
}

.logo-icon { color: var(--accent); font-size: 1.4rem; }

.nav-links { display: flex; gap: 32px; }
.nav-links a {
    color: var(--text2); text-decoration: none; font-size: 0.875rem;
    font-weight: 500; transition: color 0.2s;
}
.nav-links a:hover { color: var(--accent2); }

/* ===== HERO ===== */
#hero {
    position: relative; min-height: 100vh;
    display: flex; align-items: center; justify-content: center;
    text-align: center; overflow: hidden;
}

.hero-bg {
    position: absolute; inset: 0; z-index: 0;
}

#waveCanvas { width: 100%; height: 100%; opacity: 0.3; }

.hero-content { position: relative; z-index: 1; padding: 120px 24px 80px; }

.hero-tag {
    font-size: 0.8rem; font-weight: 600; text-transform: uppercase;
    letter-spacing: 3px; color: var(--accent2); margin-bottom: 20px;
}

#hero h1 {
    font-size: clamp(2.5rem, 7vw, 5rem); font-weight: 800;
    line-height: 1.1; margin-bottom: 20px;
}

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

.hero-desc { font-size: 1.1rem; color: var(--text2); max-width: 600px; margin: 0 auto 40px; }

.hero-stats {
    display: flex; gap: 40px; justify-content: center; flex-wrap: wrap;
    margin-bottom: 40px;
}

.stat { text-align: center; }
.stat-val {
    display: block; font-size: 1.8rem; font-weight: 700;
    font-family: 'JetBrains Mono', monospace; color: var(--green);
}
.stat-label { font-size: 0.75rem; color: var(--text2); text-transform: uppercase; letter-spacing: 1.5px; }

.cta-btn {
    display: inline-block; padding: 14px 36px;
    background: var(--accent); color: #fff; text-decoration: none;
    border-radius: 50px; font-weight: 600; font-size: 0.95rem;
    transition: all 0.3s; box-shadow: 0 4px 24px var(--accent-glow);
}
.cta-btn:hover { transform: translateY(-2px); box-shadow: 0 8px 32px var(--accent-glow); }

/* ===== SECTIONS ===== */
section { padding: 100px 0; }

.section-tag {
    font-size: 0.75rem; font-weight: 600; text-transform: uppercase;
    letter-spacing: 3px; color: var(--accent2); margin-bottom: 8px;
}

h2 {
    font-size: clamp(1.8rem, 4vw, 2.5rem); font-weight: 700;
    margin-bottom: 16px;
}

.section-desc { color: var(--text2); max-width: 600px; margin-bottom: 48px; }

/* ===== PIPELINE ===== */
.pipeline {
    display: flex; align-items: stretch; gap: 0;
    overflow-x: auto; padding: 20px 0;
}

.pipe-step {
    flex: 1; min-width: 220px; padding: 28px 24px;
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); position: relative;
    transition: border-color 0.3s;
}
.pipe-step:hover { border-color: var(--accent); }

.pipe-num {
    font-family: 'JetBrains Mono', monospace; font-weight: 700;
    font-size: 0.8rem; color: var(--accent); margin-bottom: 12px;
}

.pipe-step h3 { font-size: 1.05rem; margin-bottom: 8px; }
.pipe-step p { font-size: 0.82rem; color: var(--text2); line-height: 1.5; }

.pipe-tag {
    margin-top: 16px; font-family: 'JetBrains Mono', monospace;
    font-size: 0.7rem; color: var(--cyan); opacity: 0.7;
}

.pipe-arrow {
    display: flex; align-items: center; padding: 0 10px;
    font-size: 1.4rem; color: var(--accent); font-weight: 300; flex-shrink: 0;
}

/* ===== NN VISUAL ===== */
#architecture { background: var(--bg2); }

.nn-visual {
    display: flex; align-items: center; justify-content: center;
    gap: 0; padding: 40px 0; flex-wrap: wrap;
}

.nn-layer { text-align: center; padding: 20px 16px; }
.nn-label { font-size: 0.7rem; text-transform: uppercase; letter-spacing: 1.5px; color: var(--text2); margin-bottom: 12px; }

.nn-nodes { display: flex; flex-direction: column; gap: 6px; align-items: center; margin-bottom: 12px; }

.nn-node {
    width: 18px; height: 18px; border-radius: 50%;
    background: var(--accent); opacity: 0.6;
    animation: pulse 2s ease-in-out infinite;
}
.nn-node.sin { background: var(--cyan); }
.nn-node.cos { background: var(--pink); }

.nn-mid .nn-node { animation-delay: 0.3s; }
.nn-output .nn-node { animation-delay: 0.6s; }

@keyframes pulse {
    0%, 100% { opacity: 0.4; transform: scale(1); }
    50% { opacity: 0.9; transform: scale(1.2); }
}

.nn-size { font-size: 0.72rem; color: var(--text2); line-height: 1.4; }

.nn-conn {
    width: 40px; height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
    flex-shrink: 0;
}

.nn-detail-row {
    display: flex; justify-content: center; gap: 48px;
    padding-top: 24px; flex-wrap: wrap;
}

.nn-detail { text-align: center; }
.detail-label { display: block; font-size: 0.7rem; color: var(--text2); text-transform: uppercase; letter-spacing: 1px; }
.detail-val { font-family: 'JetBrains Mono', monospace; font-weight: 600; color: var(--green); font-size: 1.1rem; }

/* ===== DEMO ===== */
#demo { background: var(--bg); }

.demo-layout { display: grid; grid-template-columns: 1fr 1fr; gap: 40px; align-items: start; }

.demo-controls { display: flex; flex-direction: column; gap: 20px; }

.slider-label { font-weight: 500; font-size: 0.95rem; }
.angle-display {
    font-family: 'JetBrains Mono', monospace; font-weight: 700;
    font-size: 1.4rem; color: var(--accent2); margin-left: 8px;
}

.slider {
    width: 100%; height: 6px; -webkit-appearance: none;
    background: var(--bg3); border-radius: 3px; outline: none;
}
.slider::-webkit-slider-thumb {
    -webkit-appearance: none; width: 22px; height: 22px;
    background: var(--accent); border-radius: 50%; cursor: pointer;
    box-shadow: 0 0 12px var(--accent-glow);
}

.slider-ticks { display: flex; justify-content: space-between; font-size: 0.7rem; color: var(--text2); }

.element-table {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); overflow: hidden;
}

.table-header, .table-row {
    display: grid; grid-template-columns: 1fr 1.2fr 0.8fr 1.2fr;
    padding: 12px 16px; font-size: 0.85rem;
}

.table-header {
    background: var(--bg3); font-weight: 600; font-size: 0.75rem;
    text-transform: uppercase; letter-spacing: 1px; color: var(--text2);
}

.table-row { border-top: 1px solid var(--border); font-family: 'JetBrains Mono', monospace; font-size: 0.82rem; }
.table-row span:first-child { color: var(--accent2); font-weight: 600; }

.total-power {
    font-family: 'JetBrains Mono', monospace; font-size: 0.85rem;
    color: var(--green); text-align: right; padding: 8px 0;
}

.demo-pattern { display: flex; flex-direction: column; align-items: center; }

#patternCanvas {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); max-width: 100%;
}

.pattern-metrics {
    display: flex; gap: 24px; margin-top: 16px; font-size: 0.8rem;
    font-family: 'JetBrains Mono', monospace; color: var(--text2);
}

/* ===== RESULTS ===== */
#results { background: var(--bg2); }

.results-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 60px; }

.result-card {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 28px 24px; text-align: center;
    transition: border-color 0.3s, transform 0.3s;
}
.result-card:hover { border-color: var(--accent); transform: translateY(-4px); }

.result-icon { font-size: 2rem; margin-bottom: 12px; }
.result-card h3 { font-size: 0.85rem; color: var(--text2); margin-bottom: 8px; text-transform: uppercase; letter-spacing: 1px; }
.result-val { font-family: 'JetBrains Mono', monospace; font-size: 1.8rem; font-weight: 700; color: var(--green); margin-bottom: 8px; }
.result-card p { font-size: 0.78rem; color: var(--text2); }

.comparison-table {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 32px; max-width: 800px; margin: 0 auto;
}
.comparison-table h3 { margin-bottom: 20px; font-size: 1.1rem; }

table { width: 100%; border-collapse: collapse; }
th, td { padding: 12px 16px; text-align: left; font-size: 0.85rem; border-bottom: 1px solid var(--border); }
th { color: var(--text2); font-weight: 600; font-size: 0.75rem; text-transform: uppercase; letter-spacing: 1px; }
td.highlight, th.highlight { color: var(--green); font-weight: 600; }

/* ===== SPECS ===== */
.specs-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; }

.spec-group {
    background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 28px;
}
.spec-group h3 { font-size: 0.95rem; margin-bottom: 16px; color: var(--accent2); }

.spec-group ul { list-style: none; }
.spec-group li {
    display: flex; justify-content: space-between; padding: 8px 0;
    border-bottom: 1px solid rgba(42, 42, 58, 0.5); font-size: 0.82rem;
}
.spec-group li span:first-child { color: var(--text2); }
.spec-group li span:last-child { font-family: 'JetBrains Mono', monospace; color: var(--text); font-weight: 500; }

/* ===== FOOTER ===== */
footer {
    text-align: center; padding: 60px 0; border-top: 1px solid var(--border);
}
.footer-title { font-weight: 700; font-size: 1.1rem; margin-bottom: 8px; }
footer p { font-size: 0.82rem; color: var(--text2); }
.footer-copy { margin-top: 16px; font-size: 0.72rem; opacity: 0.5; }

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
    .pipeline { flex-direction: column; }
    .pipe-arrow { transform: rotate(90deg); padding: 4px 0; }
    .demo-layout { grid-template-columns: 1fr; }
    .results-grid { grid-template-columns: repeat(2, 1fr); }
    .specs-grid { grid-template-columns: 1fr; }
    .hero-stats { gap: 24px; }
    .nav-links { display: none; }
}

@media (max-width: 600px) {
    .results-grid { grid-template-columns: 1fr; }
    .hero-stats { flex-direction: column; gap: 16px; }
    .nn-visual { flex-direction: column; }
    .nn-conn { width: 2px; height: 24px; }
}