:root {
  --bg: #0a0a0f;
  --bg-surface: #12121a;
  --fg: #e8e6e3;
  --fg-muted: #8a8690;
  --accent: #c084fc;
  --accent-glow: rgba(192, 132, 252, 0.15);
  --accent-warm: #f472b6;
  --border: rgba(255, 255, 255, 0.06);
  --font-display: 'Syne', sans-serif;
  --font-body: 'Space Grotesk', sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

/* === HERO === */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  overflow: hidden;
}

.hero-glow {
  position: absolute;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  top: -100px;
  left: -200px;
  pointer-events: none;
  animation: pulse 8s ease-in-out infinite;
}

.hero-glow--right {
  background: radial-gradient(circle, rgba(244, 114, 182, 0.1) 0%, transparent 70%);
  top: auto;
  bottom: -200px;
  left: auto;
  right: -200px;
  animation-delay: 4s;
}

@keyframes pulse {
  0%, 100% { opacity: 0.5; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.1); }
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 720px;
  text-align: left;
}

.hero-tag {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 2rem;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 6vw, 5rem);
  font-weight: 800;
  line-height: 1.05;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--fg) 0%, var(--fg-muted) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: 1.15rem;
  font-weight: 300;
  color: var(--fg-muted);
  max-width: 540px;
  line-height: 1.7;
}

.hero-line {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}

/* === FEATURES === */
.features {
  padding: 6rem 2rem;
  max-width: 1100px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.feature-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2.5rem;
  transition: border-color 0.3s ease;
}

.feature-card:hover {
  border-color: rgba(192, 132, 252, 0.2);
}

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

.feature-card--accent {
  border-color: rgba(192, 132, 252, 0.15);
  background: linear-gradient(135deg, var(--bg-surface), rgba(192, 132, 252, 0.04));
}

.feature-number {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
}

.feature-card h3 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.feature-card p {
  color: var(--fg-muted);
  font-size: 0.95rem;
  font-weight: 300;
  line-height: 1.7;
}

/* === RHYTHM === */
.rhythm {
  padding: 8rem 2rem;
  display: flex;
  justify-content: center;
}

.rhythm-content {
  max-width: 640px;
}

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

.rhythm-text {
  font-size: 1.1rem;
  font-weight: 300;
  color: var(--fg-muted);
  line-height: 1.8;
  margin-bottom: 1.5rem;
}

/* === CLOSING === */
.closing {
  padding: 8rem 2rem;
  position: relative;
  overflow: hidden;
}

.closing::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 800px;
  height: 400px;
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 60%);
  pointer-events: none;
}

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

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.5rem;
  background: linear-gradient(135deg, var(--accent) 0%, var(--accent-warm) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.closing-sub {
  font-size: 1.15rem;
  font-weight: 300;
  color: var(--fg-muted);
  line-height: 1.7;
}

/* === FOOTER === */
.site-footer {
  padding: 3rem 2rem;
  border-top: 1px solid var(--border);
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--fg-muted);
}

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

.footer-divider {
  opacity: 0.3;
}

/* === RESPONSIVE === */
@media (max-width: 768px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .feature-card--wide {
    grid-column: span 1;
  }
  
  .hero {
    padding: 4rem 1.5rem;
  }
  
  .features {
    padding: 4rem 1.5rem;
  }
  
  .rhythm {
    padding: 5rem 1.5rem;
  }
  
  .closing {
    padding: 5rem 1.5rem;
  }
}

@media (max-width: 480px) {
  .hero h1 {
    font-size: 2.2rem;
  }
  
  .feature-card {
    padding: 1.75rem;
  }
  
  .closing h2 {
    font-size: 1.8rem;
  }
}