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

:root {
  --bg: #08090c;
  --surface: #0f1117;
  --surface-2: #161a24;
  --border: #1e2330;
  --accent: #f59e0b;
  --accent-dim: rgba(245, 158, 11, 0.15);
  --text: #f0f2f5;
  --text-2: #8892a4;
  --text-3: #555e73;
  --font-display: 'Syne', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

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

/* === SITE NAV === */
.site-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(8, 9, 12, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.site-nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0.875rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.site-nav-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

.site-nav-brand span { color: var(--accent); }

.site-nav-cta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--accent);
  text-decoration: none;
  padding: 0.4rem 1rem;
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: 6px;
  transition: background 0.2s, color 0.2s;
}

.site-nav-cta:hover {
  background: var(--accent);
  color: #000;
}

/* === HERO BUTTON === */
.hero-actions { margin-bottom: 2.5rem; }

.hero-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent);
  color: #000;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 700;
  text-decoration: none;
  padding: 0.75rem 1.75rem;
  border-radius: 8px;
  transition: opacity 0.15s, transform 0.15s;
}

.hero-btn:hover { opacity: 0.9; transform: translateY(-1px); }

.hero-btn-arrow { transition: transform 0.2s; }
.hero-btn:hover .hero-btn-arrow { transform: translateX(3px); }

/* === HERO === */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 5rem 2rem 2rem;
  position: relative;
  border-bottom: 1px solid var(--border);
}

.hero-inner {
  max-width: 1100px;
  margin: 0 auto;
  width: 100%;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.875rem;
  background: var(--accent-dim);
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1.75rem;
}

.badge-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.hero-headline {
  font-family: var(--font-display);
  font-size: clamp(3rem, 6vw, 5.5rem);
  font-weight: 800;
  line-height: 1.0;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 1.5rem;
}

.hero-lede {
  font-size: 1.125rem;
  color: var(--text-2);
  line-height: 1.7;
  max-width: 480px;
  margin-bottom: 2rem;
}

.hero-meta {}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 2rem;
  flex-wrap: wrap;
}

.stat { display: flex; flex-direction: column; gap: 0.25rem; }

.stat-number {
  font-family: var(--font-display);
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-family: var(--font-mono);
}

.stat-divider {
  width: 1px;
  height: 40px;
  background: var(--border);
}

/* === SYSTEM VIZ === */
.hero-right { display: flex; justify-content: center; }

.system-viz {
  position: relative;
  width: 320px;
  height: 320px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.orbit-container {
  position: relative;
  width: 280px;
  height: 280px;
  margin-bottom: 1.5rem;
}

.orbit {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--border);
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
}

.orbit-1 { width: 180px; height: 180px; animation: spin 12s linear infinite; }
.orbit-2 { width: 230px; height: 230px; animation: spin 20s linear infinite reverse; }
.orbit-3 { width: 280px; height: 280px; animation: spin 28s linear infinite; }

@keyframes spin { from { transform: translate(-50%, -50%) rotate(0deg); } to { transform: translate(-50%, -50%) rotate(360deg); } }

.orbit-dot {
  position: absolute;
  width: 10px; height: 10px;
  border-radius: 50%;
  top: -5px; left: 50%;
  transform: translateX(-50%);
  box-shadow: 0 0 12px currentColor;
}

.dot-research { background: #f59e0b; color: #f59e0b; }
.dot-engineering { background: #38bdf8; color: #38bdf8; width: 8px; height: 8px; top: -4px; }
.dot-growth { background: #a78bfa; color: #a78bfa; width: 7px; height: 7px; top: -3.5px; }

.orbit-core {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 70px; height: 70px;
  background: var(--accent-dim);
  border: 1px solid rgba(245, 158, 11, 0.5);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.core-label {
  font-family: var(--font-mono);
  font-size: 0.5rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.1em;
}

.agent-labels {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  align-self: flex-end;
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%);
}

.agent-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-2);
  white-space: nowrap;
}

.agent-status {
  width: 6px; height: 6px;
  border-radius: 50%;
  display: inline-block;
}

.agent-research .agent-status { background: #f59e0b; box-shadow: 0 0 6px #f59e0b; }
.agent-engineering .agent-status { background: #38bdf8; box-shadow: 0 0 6px #38bdf8; }
.agent-growth .agent-status { background: #a78bfa; box-shadow: 0 0 6px #a78bfa; }

/* === SCROLL CUE === */
.scroll-cue {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-3);
  font-size: 0.75rem;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(6px); }
}

/* === DEMONSTRATIONS === */
.demonstrations {
  padding: 5rem 2rem;
  border-bottom: 1px solid var(--border);
}

.demo-label {
  max-width: 1100px;
  margin: 0 auto 2rem;
}

.label-tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.demo-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
}

.demo-card {
  background: var(--surface);
  padding: 1.75rem;
}

.demo-card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.demo-card-title {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.demo-card-desc {
  font-size: 0.8rem;
  color: var(--text-3);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.demo-card-status {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 0.25rem 0.625rem;
  border-radius: 4px;
}

.demo-card-status::before {
  content: '';
  width: 5px; height: 5px;
  border-radius: 50%;
}

.status-running { color: var(--accent); background: var(--accent-dim); }
.status-running::before { background: var(--accent); animation: pulse 2s infinite; }
.status-done { color: #4ade80; background: rgba(74, 222, 128, 0.1); }
.status-done::before { background: #4ade80; }
.status-queued { color: var(--text-3); background: var(--surface-2); }
.status-queued::before { background: var(--text-3); }

/* === FEATURES === */
.features {
  padding: 6rem 2rem;
  border-bottom: 1px solid var(--border);
}

.section-header {
  max-width: 1100px;
  margin: 0 auto 4rem;
  text-align: left;
}

.section-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 0.75rem;
}

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--text);
}

.feature-grid {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  transition: border-color 0.2s;
}

.feature-card:hover { border-color: rgba(245, 158, 11, 0.3); }

.feature-icon { margin-bottom: 1.25rem; }

.feature-title {
  font-family: var(--font-display);
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.75rem;
}

.feature-desc {
  font-size: 0.875rem;
  color: var(--text-2);
  line-height: 1.7;
  margin-bottom: 1.25rem;
}

.feature-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.feature-list li {
  font-size: 0.8rem;
  color: var(--text-3);
  padding-left: 1rem;
  position: relative;
}

.feature-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--accent);
  font-size: 0.75rem;
}

/* === PRINCIPLES === */
.principles {
  padding: 6rem 2rem;
  border-bottom: 1px solid var(--border);
  background: var(--surface);
}

.principles-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 5rem;
  align-items: start;
}

.principles-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text);
}

.principles-right {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.principle {
  display: grid;
  grid-template-columns: 2.5rem 1fr;
  gap: 1.25rem;
  align-items: start;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.principle:last-child { border-bottom: none; padding-bottom: 0; }

.principle-marker {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-3);
  letter-spacing: 0.05em;
  padding-top: 0.35rem;
}

.principle-content h4 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.5rem;
}

.principle-content p {
  font-size: 0.875rem;
  color: var(--text-2);
  line-height: 1.65;
}

/* === CLOSING === */
.closing {
  padding: 8rem 2rem;
  text-align: center;
  background: var(--bg);
  position: relative;
  overflow: hidden;
}

.closing::before {
  content: '';
  position: absolute;
  top: 0; left: 50%;
  transform: translateX(-50%);
  width: 600px; height: 600px;
  background: radial-gradient(circle, rgba(245, 158, 11, 0.04) 0%, transparent 70%);
  pointer-events: none;
}

.closing-inner { position: relative; max-width: 800px; margin: 0 auto; }

.closing-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.375rem 0.875rem;
  background: var(--accent-dim);
  border: 1px solid rgba(245, 158, 11, 0.25);
  border-radius: 999px;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 2.5rem;
}

.closing-headline {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4.5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -0.03em;
  color: var(--text);
  margin-bottom: 1.5rem;
}

.closing-headline em {
  font-style: normal;
  color: var(--accent);
}

.closing-sub {
  font-size: 1.125rem;
  color: var(--text-2);
}

/* === FOOTER === */
.footer {
  padding: 2rem;
  border-top: 1px solid var(--border);
}

.footer-inner {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--text);
}

.footer-tagline {
  font-size: 0.8rem;
  color: var(--text-3);
  margin-left: 0.75rem;
}

.footer-note {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--text-3);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* === RESPONSIVE === */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 3rem; }
  .hero-right { display: none; }
  .demo-grid { grid-template-columns: 1fr; }
  .feature-grid { grid-template-columns: 1fr; }
  .principles-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .hero-stats { gap: 1.25rem; }
  .stat-divider { display: none; }
  .footer-inner { flex-direction: column; gap: 0.75rem; text-align: center; }
  .agent-labels { display: none; }
}

@media (max-width: 480px) {
  .hero { padding: 3rem 1.25rem 1.5rem; }
  .hero-headline { font-size: 2.5rem; }
  .hero-lede { font-size: 0.95rem; }
  .section-title { font-size: 1.75rem; }
  .closing-headline { font-size: 1.75rem; }
  .scroll-cue { bottom: 1.25rem; }
}