:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #181824;
  --fg: #e8e8f0;
  --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;
  --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: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: var(--font-display); line-height: 1.15; }

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

/* HERO */
.hero {
  padding: 80px 24px 40px;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-dim);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 28px;
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  font-weight: 700;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.lede {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 480px;
  line-height: 1.7;
}

/* PHONE MOCK */
.phone-mock {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 40px 80px rgba(0,0,0,0.4), 0 0 60px var(--accent-glow);
}

.phone-header {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  background: var(--bg-elevated);
}

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

.dot.green {
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent-glow);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.5; }
}

.call-label {
  font-family: var(--font-display);
  font-size: 13px;
  font-weight: 600;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.transcript {
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.msg {
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 0.9rem;
  max-width: 85%;
  line-height: 1.5;
}

.msg.ai {
  background: var(--accent-dim);
  color: var(--accent);
  border: 1px solid rgba(0, 229, 160, 0.15);
  align-self: flex-start;
}

.msg.caller {
  background: var(--bg-elevated);
  color: var(--fg-muted);
  border: 1px solid var(--border);
  align-self: flex-end;
}

.phone-status {
  padding: 14px 20px;
  border-top: 1px solid var(--border);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  background: var(--bg-elevated);
  display: flex;
  align-items: center;
  gap: 8px;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}

/* STATS */
.stats {
  padding: 60px 24px;
  max-width: 1200px;
  margin: 0 auto;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
}

.stat {
  text-align: center;
}

.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 2.8rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
}

.stat-label {
  display: block;
  font-size: 0.85rem;
  color: var(--fg-muted);
  margin-top: 8px;
  line-height: 1.5;
}

/* FEATURES */
.features {
  padding: 100px 24px;
  max-width: 1200px;
  margin: 0 auto;
}

.features-header {
  max-width: 600px;
  margin-bottom: 60px;
}

.features-header h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.features-sub {
  font-size: 1.1rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: border-color 0.2s;
}

.feature-card:hover {
  border-color: rgba(0, 229, 160, 0.2);
}

.feature-card.large {
  grid-column: span 3;
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 24px;
  align-items: start;
  padding: 40px 36px;
  background: linear-gradient(135deg, var(--bg-card) 0%, rgba(0,229,160,0.04) 100%);
}

.feature-card.large .feature-icon {
  font-size: 2.4rem;
}

.feature-card.large h3 {
  font-size: 1.4rem;
}

.feature-card.large p {
  margin-top: 8px;
}

.feature-icon {
  font-size: 1.8rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 10px;
}

.feature-card p {
  font-size: 0.9rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

/* HOW */
.how {
  padding: 100px 24px;
  max-width: 900px;
  margin: 0 auto;
}

.how h2 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 700;
  margin-bottom: 60px;
  letter-spacing: -0.02em;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.step {
  display: flex;
  gap: 32px;
  align-items: flex-start;
  padding: 28px 0;
}

.step-num {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.3;
  line-height: 1;
  min-width: 70px;
}

.step-content h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-content p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.6;
}

.step-line {
  width: 2px;
  height: 32px;
  background: linear-gradient(to bottom, var(--accent-dim), transparent);
  margin-left: 34px;
}

/* CLOSING */
.closing {
  padding: 120px 24px;
  text-align: center;
  background: radial-gradient(ellipse at center bottom, var(--accent-dim) 0%, transparent 60%);
}

.closing-content {
  max-width: 600px;
  margin: 0 auto;
}

.closing h2 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  font-weight: 700;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.closing p {
  font-size: 1.1rem;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* FOOTER */
.site-footer {
  padding: 32px 24px;
  border-top: 1px solid var(--border);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.85rem;
  color: var(--fg-muted);
}

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

.footer-sep {
  opacity: 0.3;
}

/* RESPONSIVE */
@media (max-width: 768px) {
  .hero { padding: 60px 20px 32px; }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .stats-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .features-grid { grid-template-columns: 1fr; }
  .feature-card.large { grid-column: span 1; grid-template-columns: 1fr; }
  .step { gap: 20px; }
  .step-num { font-size: 2.2rem; min-width: 50px; }
  .step-line { margin-left: 24px; }
  .stat-num { font-size: 2.2rem; }
}

@media (max-width: 480px) {
  .hero h1 { font-size: 2rem; }
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .closing { padding: 80px 20px; }
}