:root {
  --bg-dark: #0a0a0f;
  --bg-card: #12121a;
  --bg-accent: #1a1a2e;
  --text-primary: #f0f0f5;
  --text-secondary: #8888a0;
  --text-muted: #55556a;
  --accent: #ff3d00;
  --accent-glow: rgba(255, 61, 0, 0.15);
  --accent-secondary: #ff6d3a;
  --gradient-start: #ff3d00;
  --gradient-end: #ff8a00;
  --border: rgba(255, 255, 255, 0.06);
  --radius: 16px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  background: var(--bg-dark);
  color: var(--text-primary);
  font-family: 'DM Sans', sans-serif;
  font-size: 17px;
  line-height: 1.6;
  overflow-x: hidden;
}

/* ── NAV ── */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 20px 40px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  backdrop-filter: blur(20px);
  background: rgba(10, 10, 15, 0.8);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 22px;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  letter-spacing: -0.5px;
}

.nav-logo span {
  color: var(--accent);
}

.nav-tag {
  font-size: 12px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 2px;
}

/* ── HERO ── */
.hero {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 140px 24px 80px;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 800px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 60%);
  pointer-events: none;
}

.hero-eyebrow {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 13px;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--accent);
  margin-bottom: 32px;
  font-weight: 600;
}

.hero h1 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(48px, 8vw, 96px);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -3px;
  max-width: 900px;
  margin-bottom: 28px;
}

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

.hero-sub {
  font-size: 20px;
  color: var(--text-secondary);
  max-width: 540px;
  line-height: 1.6;
  margin-bottom: 56px;
}

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

.hero-mockup {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.mockup-prompt {
  background: var(--bg-accent);
  border-radius: 12px;
  padding: 20px 24px;
  color: var(--text-secondary);
  font-size: 15px;
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 12px;
}

.mockup-prompt .cursor {
  color: var(--accent);
  font-weight: 600;
  animation: blink 1.2s infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50% { opacity: 0; }
}

.mockup-output {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.mockup-frame {
  aspect-ratio: 9/16;
  border-radius: 10px;
  position: relative;
  overflow: hidden;
}

.mockup-frame:nth-child(1) {
  background: linear-gradient(160deg, #1a0a2e 0%, #2d1b4e 50%, #0a0a1a 100%);
}

.mockup-frame:nth-child(2) {
  background: linear-gradient(160deg, #2e0a0a 0%, #4e1b1b 50%, #1a0a0a 100%);
}

.mockup-frame:nth-child(3) {
  background: linear-gradient(160deg, #0a2e1a 0%, #1b4e2d 50%, #0a1a0a 100%);
}

.mockup-frame .label {
  position: absolute;
  bottom: 12px;
  left: 12px;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: rgba(255,255,255,0.5);
  font-family: 'Space Grotesk', sans-serif;
}

.mockup-frame .play-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 40px;
  height: 40px;
  border: 2px solid rgba(255,255,255,0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.mockup-frame .play-icon::after {
  content: '';
  width: 0;
  height: 0;
  border-style: solid;
  border-width: 7px 0 7px 12px;
  border-color: transparent transparent transparent rgba(255,255,255,0.5);
  margin-left: 3px;
}

/* ── HOW IT WORKS ── */
.how {
  padding: 120px 24px;
  max-width: 1100px;
  margin: 0 auto;
}

.section-label {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 3px;
  color: var(--accent);
  margin-bottom: 20px;
  font-weight: 600;
}

.section-title {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(32px, 5vw, 52px);
  font-weight: 700;
  letter-spacing: -2px;
  line-height: 1.1;
  margin-bottom: 64px;
  max-width: 600px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.step {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 36px 28px;
  position: relative;
}

.step-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 64px;
  font-weight: 700;
  color: var(--bg-accent);
  line-height: 1;
  margin-bottom: 20px;
  background: linear-gradient(180deg, rgba(255,255,255,0.08) 0%, rgba(255,255,255,0.02) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.step h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 20px;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.step p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.6;
}

/* ── PLATFORMS ── */
.platforms {
  padding: 120px 24px;
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.platforms-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 56px;
}

.platform-card {
  background: var(--bg-dark);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  transition: border-color 0.3s;
}

.platform-card:hover {
  border-color: rgba(255, 61, 0, 0.3);
}

.platform-icon {
  font-size: 32px;
  margin-bottom: 16px;
  display: block;
}

.platform-name {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 600;
  font-size: 17px;
  margin-bottom: 8px;
}

.platform-detail {
  font-size: 13px;
  color: var(--text-muted);
}

/* ── WHY ── */
.why {
  padding: 120px 24px;
  max-width: 1100px;
  margin: 0 auto;
}

.why-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 56px;
}

.why-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 32px;
}

.why-card.featured {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, rgba(255,61,0,0.08), rgba(255,138,0,0.04));
  border-color: rgba(255, 61, 0, 0.2);
}

.why-card h3 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 22px;
  font-weight: 600;
  margin-bottom: 12px;
  letter-spacing: -0.5px;
}

.why-card p {
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
}

.why-card .stat {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 48px;
  font-weight: 700;
  background: linear-gradient(135deg, var(--gradient-start), var(--gradient-end));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 8px;
  line-height: 1;
}

/* ── CLOSING ── */
.closing {
  padding: 140px 24px;
  text-align: center;
  position: relative;
}

.closing::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 60%);
  pointer-events: none;
}

.closing h2 {
  font-family: 'Space Grotesk', sans-serif;
  font-size: clamp(36px, 6vw, 64px);
  font-weight: 700;
  letter-spacing: -2px;
  line-height: 1.1;
  max-width: 700px;
  margin: 0 auto 24px;
  position: relative;
}

.closing p {
  color: var(--text-secondary);
  font-size: 18px;
  max-width: 480px;
  margin: 0 auto;
  position: relative;
}

/* ── FOOTER ── */
.footer {
  padding: 40px 24px;
  text-align: center;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 14px;
}

.footer a {
  color: var(--text-secondary);
  text-decoration: none;
}

/* ── RESPONSIVE ── */
@media (max-width: 768px) {
  .nav {
    padding: 16px 20px;
  }

  .hero {
    padding: 120px 20px 60px;
  }

  .hero h1 {
    letter-spacing: -1.5px;
  }

  .mockup-output {
    grid-template-columns: repeat(3, 1fr);
    gap: 8px;
  }

  .steps {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .platform-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
  }

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

  .hero-mockup {
    padding: 20px;
  }

  .how, .why {
    padding: 80px 20px;
  }

  .platforms {
    padding: 80px 20px;
  }

  .closing {
    padding: 100px 20px;
  }
}