:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #1a1a26;
  --fg-primary: #f0f0f5;
  --fg-secondary: #9898a8;
  --fg-muted: #6a6a7a;
  --accent: #6366f1;
  --accent-light: #818cf8;
  --accent-glow: rgba(99, 102, 241, 0.15);
  --gradient-start: #6366f1;
  --gradient-mid: #a855f7;
  --gradient-end: #ec4899;
  --border: #2a2a3a;
  --radius: 12px;
  --radius-sm: 8px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg-primary);
  color: var(--fg-primary);
  font-family: 'DM Sans', sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ---- HERO ---- */
.hero {
  min-height: 90vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px 60px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -40%;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero-container {
  max-width: 800px;
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  border: 1px solid var(--border);
  border-radius: 100px;
  font-family: 'Space Grotesk', sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--accent-light);
  margin-bottom: 32px;
}

.hero h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

.gradient-text {
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-mid), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--fg-secondary);
  max-width: 600px;
  margin: 0 auto 48px;
  line-height: 1.7;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 32px;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.stat-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--fg-primary);
}

.stat-label {
  font-size: 0.8rem;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

/* ---- PROBLEM ---- */
.problem {
  padding: 100px 24px;
  background: var(--bg-secondary);
}

.problem-container {
  max-width: 1000px;
  margin: 0 auto;
}

.problem-label,
.how-label,
.features-label {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 2px;
  color: var(--accent-light);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.problem h2,
.how h2,
.features h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 48px;
  letter-spacing: -0.01em;
}

.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;
}

.problem-icon {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--gradient-end);
  margin-bottom: 16px;
}

.problem-card h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 12px;
}

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

/* ---- HOW ---- */
.how {
  padding: 100px 24px;
}

.how-container {
  max-width: 800px;
  margin: 0 auto;
}

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

.step {
  display: flex;
  gap: 32px;
  padding: 32px 0;
  border-bottom: 1px solid var(--border);
}

.step:last-child {
  border-bottom: none;
}

.step-num {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 3rem;
  font-weight: 700;
  color: var(--bg-card);
  -webkit-text-stroke: 1px var(--border);
  line-height: 1;
  min-width: 80px;
}

.step-content h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 8px;
}

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

/* ---- FEATURES ---- */
.features {
  padding: 100px 24px;
  background: var(--bg-secondary);
}

.features-container {
  max-width: 1000px;
  margin: 0 auto;
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px;
}

.feature-highlight {
  border-color: var(--accent);
  background: linear-gradient(135deg, rgba(99,102,241,0.08) 0%, var(--bg-card) 100%);
}

.feature-card h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 12px;
}

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

/* ---- CLOSING ---- */
.closing {
  padding: 120px 24px;
  text-align: center;
}

.closing-container {
  max-width: 700px;
  margin: 0 auto;
}

.closing h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(2rem, 5vw, 3.2rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 24px;
  letter-spacing: -0.02em;
}

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

/* ---- FOOTER ---- */
.site-footer {
  padding: 48px 24px;
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-container {
  max-width: 1000px;
  margin: 0 auto;
}

.footer-brand {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 8px;
}

.footer-tagline {
  color: var(--fg-muted);
  font-size: 0.9rem;
}

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .problem-grid {
    grid-template-columns: 1fr;
  }

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

  .step {
    flex-direction: column;
    gap: 16px;
  }

  .step-num {
    font-size: 2rem;
    min-width: auto;
  }

  .hero-stats {
    flex-direction: column;
    gap: 24px;
  }

  .stat-divider {
    width: 40px;
    height: 1px;
  }

  .hero {
    min-height: 80vh;
    padding: 60px 20px 40px;
  }

  .problem,
  .how,
  .features {
    padding: 60px 20px;
  }

  .closing {
    padding: 80px 20px;
  }
}