:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #111118;
  --bg-card: #16161f;
  --fg-primary: #f0f0f5;
  --fg-secondary: #8a8a9a;
  --fg-muted: #5a5a6a;
  --accent: #00e879;
  --accent-dim: #00c966;
  --accent-glow: rgba(0, 232, 121, 0.15);
  --border: #22222e;
  --radius: 12px;
  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'DM Sans', sans-serif;
}

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

body {
  background: var(--bg-primary);
  color: var(--fg-primary);
  font-family: var(--font-body);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.15;
}

/* ---- HERO ---- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 80px 40px 60px;
  background: var(--bg-primary);
  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: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

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

.hero h1 {
  font-size: clamp(2.2rem, 4.5vw, 3.6rem);
  margin-bottom: 24px;
  color: var(--fg-primary);
}

.hero h1 .highlight {
  color: var(--accent);
}

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

/* Phone mockup */
.phone-mockup {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 24px 20px;
  max-width: 380px;
  margin-left: auto;
  box-shadow: 0 40px 80px rgba(0,0,0,0.4);
}

.phone-screen {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.chat-bubble {
  padding: 14px 18px;
  border-radius: 16px;
  font-size: 0.9rem;
  line-height: 1.5;
  max-width: 90%;
}

.chat-bubble.incoming {
  background: var(--bg-card);
  color: var(--fg-primary);
  border-bottom-left-radius: 4px;
  align-self: flex-start;
}

.chat-bubble.outgoing {
  background: var(--accent);
  color: var(--bg-primary);
  border-bottom-right-radius: 4px;
  align-self: flex-end;
  font-weight: 500;
}

/* ---- HOW ---- */
.how {
  padding: 120px 40px;
  background: var(--bg-secondary);
}

.how-inner {
  max-width: 900px;
  margin: 0 auto;
}

.how h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  margin-bottom: 12px;
}

.section-sub {
  color: var(--fg-secondary);
  font-size: 1.1rem;
  margin-bottom: 60px;
}

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

.step {
  display: grid;
  grid-template-columns: 80px 1fr;
  gap: 24px;
  padding: 40px 0;
  border-top: 1px solid var(--border);
}

.step:last-child {
  border-bottom: 1px solid var(--border);
}

.step-number {
  font-family: var(--font-display);
  font-size: 2.4rem;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
}

.step h3 {
  font-size: 1.3rem;
  margin-bottom: 8px;
}

.step p {
  color: var(--fg-secondary);
  font-size: 1rem;
}

/* ---- PROOF ---- */
.proof {
  padding: 120px 40px;
  background: var(--bg-primary);
}

.proof-inner {
  max-width: 1000px;
  margin: 0 auto;
}

.proof h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  margin-bottom: 60px;
  text-align: center;
}

.proof-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 80px;
}

.proof-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 40px 28px;
  text-align: center;
}

.proof-stat {
  font-family: var(--font-display);
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 12px;
}

.proof-card p {
  color: var(--fg-secondary);
  font-size: 0.95rem;
}

/* Compare */
.proof-compare {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 32px;
  align-items: center;
}

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

.compare-item.new {
  border-color: var(--accent);
  box-shadow: 0 0 40px var(--accent-glow);
}

.compare-item h3 {
  font-size: 1.2rem;
  margin-bottom: 8px;
}

.compare-price {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  margin-bottom: 12px;
}

.compare-item.old .compare-price {
  color: var(--fg-muted);
  text-decoration: line-through;
}

.compare-item.new .compare-price {
  color: var(--accent);
}

.compare-item p:last-child {
  color: var(--fg-secondary);
  font-size: 0.95rem;
}

.compare-vs {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--fg-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* ---- CLOSING ---- */
.closing {
  padding: 120px 40px;
  background: var(--bg-secondary);
  text-align: center;
}

.closing-inner {
  max-width: 800px;
  margin: 0 auto;
}

.closing h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 40px;
}

.niche-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  justify-content: center;
  margin-bottom: 48px;
}

.niche {
  display: inline-block;
  padding: 10px 20px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 100px;
  font-family: var(--font-display);
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--fg-primary);
  transition: border-color 0.2s, color 0.2s;
}

.niche:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.closing-statement {
  font-size: 1.25rem;
  color: var(--fg-secondary);
  line-height: 1.7;
  max-width: 600px;
  margin: 0 auto;
}

/* ---- FOOTER ---- */
.site-footer {
  padding: 48px 40px;
  background: var(--bg-primary);
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-brand {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--fg-primary);
  margin-bottom: 8px;
}

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

/* ---- RESPONSIVE ---- */
@media (max-width: 768px) {
  .hero {
    padding: 60px 20px 40px;
    min-height: auto;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }

  .phone-mockup {
    margin-left: 0;
    max-width: 100%;
  }

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

  .step {
    grid-template-columns: 60px 1fr;
    gap: 16px;
    padding: 28px 0;
  }

  .step-number {
    font-size: 1.8rem;
  }

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

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

  .compare-vs {
    text-align: center;
  }

  .niche-tags {
    gap: 8px;
  }

  .niche {
    padding: 8px 16px;
    font-size: 0.8rem;
  }

  .site-footer {
    padding: 32px 20px;
  }
}