:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #18182a;
  --fg: #e8e8ed;
  --fg-muted: #8888a0;
  --accent: #00e5a0;
  --accent-dim: rgba(0, 229, 160, 0.12);
  --accent-glow: rgba(0, 229, 160, 0.25);
  --border: rgba(255,255,255,0.06);
  --radius: 16px;
  --radius-sm: 10px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── HERO ── */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 1fr 1fr;
  align-items: center;
  gap: 4rem;
  padding: 6rem 5vw 4rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -30%;
  right: -20%;
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 65%);
  pointer-events: none;
  z-index: 0;
}

.hero-grid { position: relative; z-index: 1; }
.hero-visual { position: relative; z-index: 1; }

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 0.45rem 1rem;
  border-radius: 100px;
  margin-bottom: 2rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 5.5vw, 5rem);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.03em;
  margin-bottom: 1.5rem;
}

.hero h1 .accent { color: var(--accent); }

.hero-sub {
  font-size: 1.1rem;
  color: var(--fg-muted);
  max-width: 480px;
  line-height: 1.7;
}

/* Terminal */
.terminal {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 40px 80px rgba(0,0,0,0.5), 0 0 120px var(--accent-glow);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 1.2rem;
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--border);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot.red { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green { background: #28c840; }

.terminal-title {
  font-family: var(--font-display);
  font-size: 0.75rem;
  color: var(--fg-muted);
  margin-left: 0.5rem;
}

.terminal-body {
  padding: 1.5rem;
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.9rem;
}

.line {
  padding: 0.4rem 0;
  display: flex;
  gap: 0.6rem;
}

.prompt { color: var(--accent); font-weight: 600; }
.val { color: var(--accent); margin-left: auto; font-weight: 500; }

.blink .cursor {
  animation: blink 1.1s step-end infinite;
}

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

/* ── METRICS ── */
.metrics {
  padding: 4rem 5vw;
}

.metrics-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.metric-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: border-color 0.3s;
}

.metric-card:hover {
  border-color: var(--accent);
}

.metric-number {
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.metric-label {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg);
  margin-bottom: 0.75rem;
}

.metric-detail {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.5;
}

/* ── FEATURES ── */
.features {
  padding: 6rem 5vw;
}

.section-header {
  max-width: 640px;
  margin-bottom: 3.5rem;
}

.tag {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 1rem;
}

.section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.025em;
  margin-bottom: 1rem;
}

.section-sub {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2rem;
  transition: transform 0.2s, border-color 0.3s;
}

.feature-card:hover {
  transform: translateY(-3px);
  border-color: rgba(0, 229, 160, 0.3);
}

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

.feature-icon {
  font-size: 1.6rem;
  color: var(--accent);
  margin-bottom: 1rem;
  line-height: 1;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 0.65rem;
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* ── STACK ── */
.stack {
  padding: 6rem 5vw;
}

.stack-items {
  display: flex;
  flex-direction: column;
  gap: 2rem;
  max-width: 720px;
}

.stack-item {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  padding: 2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.3s;
}

.stack-item:hover {
  border-color: var(--accent);
}

.stack-num {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  min-width: 48px;
}

.stack-content h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.stack-content p {
  font-size: 0.92rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* ── CLOSING ── */
.closing {
  padding: 8rem 5vw;
  text-align: center;
}

.closing-inner {
  max-width: 680px;
  margin: 0 auto;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 3.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.025em;
  margin-bottom: 1.5rem;
}

.closing p {
  font-size: 1.05rem;
  color: var(--fg-muted);
  line-height: 1.7;
  margin-bottom: 1rem;
}

.closing-vision {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--accent);
  margin-top: 2rem;
}

/* ── FOOTER ── */
.site-footer {
  padding: 3rem 5vw;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  color: var(--fg);
}

.footer-note {
  font-size: 0.82rem;
  color: var(--fg-muted);
}

.footer-links { display: flex; align-items: center; }

.footer-cta {
  font-family: var(--font-display);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  padding: 0.45rem 1rem;
  border: 1px solid rgba(0, 229, 160, 0.3);
  border-radius: var(--radius-sm);
  background: var(--accent-dim);
  transition: all 0.2s;
}

.footer-cta:hover {
  background: rgba(0, 229, 160, 0.2);
  border-color: var(--accent);
}

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding-top: 4rem;
    gap: 3rem;
  }
  .metrics-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .feature-wide {
    grid-column: span 1;
  }
}

@media (max-width: 640px) {
  .hero { padding: 3rem 1.25rem 2rem; }
  .metrics { padding: 2rem 1.25rem; }
  .features { padding: 3rem 1.25rem; }
  .stack { padding: 3rem 1.25rem; }
  .closing { padding: 4rem 1.25rem; }
  .site-footer { padding: 2rem 1.25rem; }
  .metrics-grid {
    grid-template-columns: 1fr;
  }
  .stack-item {
    flex-direction: column;
    gap: 1rem;
  }
  .footer-inner {
    flex-direction: column;
    gap: 0.5rem;
    text-align: center;
  }
}