:root {
  --bg: #0a0a0f;
  --bg-subtle: #12121a;
  --fg: #f0f0f5;
  --fg-muted: #8a8a9a;
  --accent: #00ff88;
  --accent-dim: #00cc6a;
  --accent-glow: rgba(0, 255, 136, 0.15);
  --purple: #a855f7;
  --purple-glow: rgba(168, 85, 247, 0.15);
  --card-bg: #16161f;
  --card-border: #2a2a3a;
  --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;
  overflow-x: hidden;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.1;
}

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

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 80%;
  height: 150%;
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 60%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 60%;
  height: 100%;
  background: radial-gradient(ellipse, var(--purple-glow) 0%, transparent 60%);
  pointer-events: none;
}

.hero-badge {
  display: inline-block;
  background: var(--accent-glow);
  border: 1px solid var(--accent-dim);
  color: var(--accent);
  padding: 0.4rem 1rem;
  border-radius: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  margin-bottom: 1.5rem;
}

.hero h1 .accent {
  background: linear-gradient(135deg, var(--accent), var(--purple));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.lede {
  font-size: 1.2rem;
  color: var(--fg-muted);
  max-width: 480px;
  margin-bottom: 2.5rem;
}

.hero-stats {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.stat {
  display: flex;
  flex-direction: column;
}

.stat-value {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--accent);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

/* Phone Mockup */
.hero-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  position: relative;
  z-index: 1;
}

.phone-mockup {
  width: 300px;
  height: 550px;
  background: var(--card-bg);
  border-radius: 40px;
  border: 2px solid var(--card-border);
  padding: 2rem 1.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 1rem;
  box-shadow: 0 40px 80px rgba(0,0,0,0.5), 0 0 60px var(--accent-glow);
}

.phone-screen {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.chat-bubble {
  padding: 0.75rem 1rem;
  border-radius: 16px;
  font-size: 0.9rem;
  max-width: 85%;
  animation: fadeSlide 0.5s ease both;
}

.chat-bubble.left {
  background: var(--bg-subtle);
  border: 1px solid var(--card-border);
  align-self: flex-start;
  border-bottom-left-radius: 4px;
}

.chat-bubble.right {
  background: linear-gradient(135deg, var(--accent-dim), #009955);
  color: #000;
  font-weight: 500;
  align-self: flex-end;
  border-bottom-right-radius: 4px;
}

.vibe-indicator {
  margin-top: 1rem;
  padding: 0.5rem 1rem;
  background: var(--purple-glow);
  border: 1px solid rgba(168, 85, 247, 0.3);
  border-radius: 100px;
  font-size: 0.75rem;
  color: var(--purple);
  text-align: center;
}

@keyframes fadeSlide {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* FEATURES */
.features {
  padding: 6rem;
  position: relative;
}

.features-header {
  margin-bottom: 4rem;
  max-width: 600px;
}

.features-header h2 {
  font-size: clamp(2rem, 3.5vw, 3rem);
  margin-bottom: 1rem;
}

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

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

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

.feature-card:hover {
  border-color: var(--accent-dim);
  transform: translateY(-4px);
}

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

.feature-icon {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent);
  background: var(--accent-glow);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 12px;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
}

.feature-card h3 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* HOW IT WORKS */
.how-it-works {
  padding: 6rem;
  background: var(--bg-subtle);
  border-top: 1px solid var(--card-border);
  border-bottom: 1px solid var(--card-border);
}

.how-it-works h2 {
  font-size: clamp(2rem, 3.5vw, 3rem);
  margin-bottom: 4rem;
  text-align: center;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3rem;
}

.step {
  text-align: center;
}

.step-number {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 1rem;
  opacity: 0.6;
}

.step h3 {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
}

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

.guest-note {
  text-align: center;
  padding: 1.5rem 2rem;
  background: var(--accent-glow);
  border: 1px solid rgba(0, 255, 136, 0.2);
  border-radius: var(--radius);
  max-width: 500px;
  margin: 0 auto;
}

.guest-note p {
  font-size: 0.95rem;
  color: var(--fg-muted);
}

.guest-note strong {
  color: var(--accent);
}

/* CLOSING */
.closing {
  padding: 8rem 6rem;
  text-align: center;
  position: relative;
}

.closing::before {
  content: '';
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 100%;
  background: radial-gradient(ellipse at center, var(--purple-glow) 0%, transparent 70%);
  pointer-events: none;
}

.closing-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
  margin: 0 auto;
}

.closing h2 {
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  margin-bottom: 1.5rem;
}

.closing p {
  font-size: 1.2rem;
  color: var(--fg-muted);
  margin-bottom: 1rem;
}

.closing-detail p {
  font-size: 0.85rem;
  color: var(--fg-muted);
  opacity: 0.7;
}

/* CTA BUTTON */
.hero-cta-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent);
  color: #000;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  padding: 0.9rem 2rem;
  border-radius: 100px;
  text-decoration: none;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 0 24px var(--accent-glow);
}
.hero-cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 40px var(--accent-glow);
}

/* FOOTER */
.site-footer {
  padding: 3rem 6rem;
  border-top: 1px solid var(--card-border);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 2rem;
}

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
}

.footer-brand p {
  color: var(--fg-muted);
  font-size: 0.85rem;
  margin-top: 0.25rem;
}

.footer-legal p {
  font-size: 0.75rem;
  color: var(--fg-muted);
  opacity: 0.6;
  max-width: 400px;
  text-align: right;
}

/* RESPONSIVE */
@media (max-width: 1024px) {
  .hero {
    padding: 3rem;
    gap: 3rem;
  }
  .features {
    padding: 4rem 3rem;
  }
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .feature-large {
    grid-column: span 2;
  }
  .how-it-works {
    padding: 4rem 3rem;
  }
  .closing {
    padding: 5rem 3rem;
  }
  .site-footer {
    padding: 2rem 3rem;
  }
}

@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    min-height: auto;
    padding: 3rem 1.5rem;
    text-align: center;
  }
  .lede {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-stats {
    justify-content: center;
  }
  .hero-visual {
    order: -1;
  }
  .phone-mockup {
    width: 260px;
    height: 450px;
  }
  .features {
    padding: 3rem 1.5rem;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .feature-large {
    grid-column: span 1;
  }
  .how-it-works {
    padding: 3rem 1.5rem;
  }
  .steps {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  .closing {
    padding: 4rem 1.5rem;
  }
  .site-footer {
    padding: 2rem 1.5rem;
  }
  .footer-content {
    flex-direction: column;
    text-align: center;
  }
  .footer-legal p {
    text-align: center;
  }
}