:root {
  --bg: #0C0F0A;
  --bg-warm: #141810;
  --fg: #F2EDE4;
  --fg-muted: #A89F91;
  --accent: #E8A838;
  --accent-glow: #F5C563;
  --green: #25D366;
  --green-dark: #1DA851;
  --card-bg: #1A1E16;
  --card-border: #2A2F22;
  --chat-incoming: #1F2C1A;
  --chat-outgoing: #1A3025;
  --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);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 80px 24px 60px;
  background: 
    radial-gradient(ellipse 60% 50% at 20% 80%, rgba(37, 211, 102, 0.06) 0%, transparent 60%),
    radial-gradient(ellipse 40% 40% at 80% 20%, rgba(232, 168, 56, 0.05) 0%, transparent 60%),
    var(--bg);
}

.hero-inner {
  max-width: 780px;
  margin: 0 auto;
  width: 100%;
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-display);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 3px;
  color: var(--green);
  border: 1px solid rgba(37, 211, 102, 0.3);
  padding: 6px 16px;
  border-radius: 100px;
  margin-bottom: 32px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.lede {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 560px;
  margin-bottom: 48px;
  line-height: 1.7;
}

/* Chat visual */
.hero-visual {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.chat-bubble {
  padding: 12px 16px;
  border-radius: 12px;
  max-width: 85%;
  font-size: 0.92rem;
  line-height: 1.5;
  position: relative;
}

.chat-sender {
  display: block;
  font-family: var(--font-display);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-bottom: 4px;
}

.chat-bubble.incoming {
  background: var(--chat-incoming);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.chat-bubble.incoming .chat-sender { color: var(--fg-muted); }

.chat-bubble.outgoing {
  background: var(--chat-outgoing);
  align-self: flex-end;
  border-bottom-right-radius: 4px;
  border-left: 2px solid var(--green);
}

.chat-bubble.outgoing .chat-sender { color: var(--green); }

/* ===== STATS ===== */
.stats {
  padding: 64px 24px;
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
}

.stats-inner {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
}

.stat { text-align: center; flex: 1; }

.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 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: 4px;
}

.stat-divider {
  width: 1px;
  height: 48px;
  background: var(--card-border);
}

/* ===== FEATURES ===== */
.features {
  padding: 100px 24px;
}

.features-inner {
  max-width: 900px;
  margin: 0 auto;
}

.features-header {
  margin-bottom: 64px;
}

.features-header h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 16px;
}

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

.features-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
}

.feature-card {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 16px;
  padding: 32px;
  transition: border-color 0.2s;
}

.feature-card:hover {
  border-color: rgba(232, 168, 56, 0.3);
}

.feature-icon {
  font-size: 1.6rem;
  margin-bottom: 16px;
  display: block;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* ===== HOW ===== */
.how {
  padding: 100px 24px;
  background: var(--bg-warm);
}

.how-inner {
  max-width: 700px;
  margin: 0 auto;
}

.how h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 700;
  margin-bottom: 56px;
}

.how-steps {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.how-step {
  display: flex;
  gap: 28px;
  align-items: flex-start;
}

.step-num {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.4;
  min-width: 56px;
  line-height: 1;
  padding-top: 4px;
}

.step-content h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 8px;
}

.step-content p {
  font-size: 0.95rem;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* ===== CLOSING ===== */
.closing {
  padding: 120px 24px;
  text-align: center;
  background:
    radial-gradient(ellipse 50% 60% at 50% 50%, rgba(232, 168, 56, 0.06) 0%, transparent 70%),
    var(--bg);
}

.closing-inner {
  max-width: 640px;
  margin: 0 auto;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 20px;
}

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

/* ===== FOOTER ===== */
.site-footer {
  padding: 40px 24px;
  border-top: 1px solid var(--card-border);
}

.footer-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
}

.footer-tagline {
  font-size: 0.85rem;
  color: var(--fg-muted);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 680px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .stats-inner {
    flex-direction: column;
    gap: 32px;
  }
  
  .stat-divider {
    width: 48px;
    height: 1px;
  }
  
  .hero {
    min-height: auto;
    padding: 60px 20px 48px;
  }
  
  .hero-visual {
    padding: 16px;
  }
  
  .chat-bubble {
    max-width: 95%;
  }
  
  .how-step {
    flex-direction: column;
    gap: 12px;
  }
  
  .step-num {
    font-size: 1.6rem;
  }
  
  .footer-inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }
}