:root {
  --bg: #0a0a0f;
  --bg-elevated: #12121a;
  --bg-card: #16161f;
  --fg: #e8e8ed;
  --fg-muted: #8888a0;
  --fg-dim: #55556a;
  --accent: #00ff88;
  --accent-dim: rgba(0, 255, 136, 0.15);
  --accent-glow: rgba(0, 255, 136, 0.3);
  --danger: #ff4466;
  --danger-dim: rgba(255, 68, 102, 0.15);
  --success: #00ff88;
  --border: #1e1e2a;
  --radius: 12px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', 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;
}

.gradient-text {
  background: linear-gradient(135deg, var(--accent), #00ccff);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 80px 40px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 80px;
  align-items: center;
  width: 100%;
}

.hero-tag {
  display: inline-block;
  padding: 6px 16px;
  background: var(--accent-dim);
  border: 1px solid rgba(0, 255, 136, 0.2);
  border-radius: 100px;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 24px;
}

.hero h1 {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 24px;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--fg-muted);
  max-width: 520px;
  line-height: 1.7;
}

/* Radar visual */
.hero-visual {
  position: relative;
  width: 100%;
  aspect-ratio: 1;
  max-width: 420px;
  justify-self: center;
}

.radar-ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid rgba(0, 255, 136, 0.1);
}

.ring-1 {
  top: 10%; left: 10%; right: 10%; bottom: 10%;
  animation: pulse-ring 3s ease-in-out infinite;
}

.ring-2 {
  top: 25%; left: 25%; right: 25%; bottom: 25%;
  border-color: rgba(0, 255, 136, 0.15);
  animation: pulse-ring 3s ease-in-out infinite 0.5s;
}

.ring-3 {
  top: 38%; left: 38%; right: 38%; bottom: 38%;
  border-color: rgba(0, 255, 136, 0.25);
  animation: pulse-ring 3s ease-in-out infinite 1s;
}

.radar-center {
  position: absolute;
  top: 50%; left: 50%;
  transform: translate(-50%, -50%);
  width: 60px;
  height: 60px;
  background: var(--accent);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--bg);
  box-shadow: 0 0 40px var(--accent-glow), 0 0 80px rgba(0, 255, 136, 0.1);
}

.radar-dot {
  position: absolute;
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
  opacity: 0;
  animation: dot-blink 4s ease-in-out infinite;
}

.dot-1 { top: 15%; left: 40%; animation-delay: 0s; }
.dot-2 { top: 30%; right: 15%; animation-delay: 0.8s; }
.dot-3 { bottom: 25%; left: 20%; animation-delay: 1.6s; }
.dot-4 { top: 45%; left: 12%; animation-delay: 2.4s; }
.dot-5 { bottom: 15%; right: 30%; animation-delay: 3.2s; }

@keyframes pulse-ring {
  0%, 100% { opacity: 0.4; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.03); }
}

@keyframes dot-blink {
  0%, 20%, 100% { opacity: 0; transform: scale(0.5); }
  10% { opacity: 1; transform: scale(1.2); }
  15% { opacity: 0.7; transform: scale(1); }
}

/* ===== PROBLEM ===== */
.problem {
  padding: 120px 40px;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.problem-container {
  max-width: 1100px;
  margin: 0 auto;
}

.problem-label {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--danger);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.problem h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 56px;
  max-width: 700px;
}

.strike {
  text-decoration: line-through;
  color: var(--danger);
  opacity: 0.7;
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

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

.problem-card:hover {
  transform: translateY(-4px);
}

.problem-card.dead {
  border-color: rgba(255, 68, 102, 0.2);
}

.problem-card.dead .card-icon {
  color: var(--danger);
  background: var(--danger-dim);
}

.problem-card.alive {
  border-color: rgba(0, 255, 136, 0.2);
}

.problem-card.alive .card-icon {
  color: var(--accent);
  background: var(--accent-dim);
}

.card-icon {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.problem-card h3 {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 10px;
}

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

/* ===== FEATURES ===== */
.features {
  padding: 120px 40px;
}

.features-container {
  max-width: 1100px;
  margin: 0 auto;
}

.features-label {
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}

.features-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 3.5vw, 2.8rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 64px;
}

.features-stack {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.feature-row {
  display: grid;
  grid-template-columns: 80px 1fr 280px;
  gap: 40px;
  align-items: center;
  padding: 40px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  transition: border-color 0.2s;
}

.feature-row:hover {
  border-color: rgba(0, 255, 136, 0.2);
}

.feature-number {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--fg-dim);
}

.feature-content h3 {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 600;
  margin-bottom: 8px;
}

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

.feature-visual {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  justify-content: flex-end;
}

.platform-pill {
  padding: 8px 18px;
  background: var(--accent-dim);
  border: 1px solid rgba(0, 255, 136, 0.15);
  border-radius: 100px;
  font-family: var(--font-display);
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
}

.transform-block {
  display: flex;
  align-items: center;
  gap: 16px;
}

.transform-before {
  padding: 10px 20px;
  background: var(--danger-dim);
  border: 1px solid rgba(255, 68, 102, 0.2);
  border-radius: 8px;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--danger);
  text-decoration: line-through;
}

.transform-arrow {
  font-size: 1.3rem;
  color: var(--fg-dim);
}

.transform-after {
  padding: 10px 20px;
  background: var(--accent-dim);
  border: 1px solid rgba(0, 255, 136, 0.2);
  border-radius: 8px;
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--accent);
}

.schedule-bars {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 60px;
}

.schedule-bars .bar {
  width: 28px;
  background: rgba(0, 255, 136, 0.15);
  border-radius: 4px 4px 0 0;
  transition: background 0.2s;
}

.schedule-bars .bar.active {
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent-glow);
}

/* ===== STATS ===== */
.how {
  padding: 80px 40px;
  background: var(--bg-elevated);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.how-container {
  max-width: 1100px;
  margin: 0 auto;
}

.stat-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
  text-align: center;
}

.stat-number {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 4vw, 3.5rem);
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 8px;
}

.stat-desc {
  font-size: 0.95rem;
  color: var(--fg-muted);
  max-width: 240px;
  margin: 0 auto;
  line-height: 1.5;
}

/* ===== CLOSING ===== */
.closing {
  padding: 140px 40px;
  text-align: center;
}

.closing-container {
  max-width: 720px;
  margin: 0 auto;
}

.closing h2 {
  font-family: var(--font-display);
  font-size: clamp(2rem, 4vw, 3.2rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 24px;
}

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

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

.footer-container {
  max-width: 1100px;
  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: 600;
  color: var(--fg);
}

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

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
    text-align: center;
  }

  .hero-sub {
    margin: 0 auto;
  }

  .hero-visual {
    max-width: 300px;
  }

  .problem-grid {
    grid-template-columns: 1fr;
  }

  .feature-row {
    grid-template-columns: 1fr;
    gap: 20px;
    text-align: center;
  }

  .feature-number {
    font-size: 1.5rem;
  }

  .feature-visual {
    justify-content: center;
  }

  .stat-row {
    grid-template-columns: 1fr;
    gap: 32px;
  }
}

@media (max-width: 600px) {
  .hero {
    padding: 60px 20px;
  }

  .problem,
  .features,
  .how,
  .closing {
    padding: 80px 20px;
  }

  .feature-row {
    padding: 24px;
  }

  .site-footer {
    padding: 24px 20px;
  }

  .footer-container {
    flex-direction: column;
    gap: 8px;
  }
}