:root {
  --bg: #0c0f14;
  --bg-elevated: #141820;
  --bg-card: #1a1f2b;
  --fg: #e8eaed;
  --fg-muted: #8b919e;
  --accent: #3dd68c;
  --accent-glow: rgba(61, 214, 140, 0.15);
  --accent-secondary: #6ee7b7;
  --warning: #f59e0b;
  --card-public: #1e3a2f;
  --card-private: #1e2d3a;
  --card-summary: #2a2535;
  --card-recovery: #2f2a1e;
  --radius: 12px;
  --radius-lg: 20px;
}

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

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

h1, h2, h3 {
  font-family: 'Space Grotesk', sans-serif;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

/* ===== HERO ===== */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 80px 24px 60px;
  position: relative;
  overflow: hidden;
  background: 
    radial-gradient(ellipse 60% 50% at 50% 0%, rgba(61, 214, 140, 0.08), transparent),
    radial-gradient(ellipse 40% 60% at 80% 80%, rgba(61, 214, 140, 0.04), transparent),
    var(--bg);
}

.hero-inner {
  max-width: 720px;
  text-align: center;
}

.badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: 100px;
  background: var(--accent-glow);
  border: 1px solid rgba(61, 214, 140, 0.25);
  color: var(--accent);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.02em;
  margin-bottom: 28px;
}

.hero h1 {
  font-size: clamp(2.4rem, 6vw, 4rem);
  font-weight: 700;
  margin-bottom: 24px;
  color: #fff;
}

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

.lede {
  font-size: clamp(1.05rem, 2.2vw, 1.25rem);
  color: var(--fg-muted);
  max-width: 560px;
  margin: 0 auto 48px;
  line-height: 1.7;
}

/* Demo card */
.hero-demo {
  max-width: 520px;
  margin: 0 auto;
}

.demo-review {
  background: var(--bg-card);
  border: 1px solid rgba(255,255,255,0.06);
  border-radius: var(--radius-lg);
  padding: 28px;
  text-align: left;
}

.demo-stars {
  margin-bottom: 12px;
}

.star {
  font-size: 18px;
  color: #333;
}

.star.filled {
  color: var(--warning);
}

.demo-text {
  font-size: 15px;
  color: var(--fg-muted);
  font-style: italic;
  line-height: 1.6;
}

.demo-arrow {
  text-align: center;
  font-size: 24px;
  color: var(--accent);
  margin: 16px 0;
  opacity: 0.6;
}

.demo-output {
  background: var(--card-public);
  border: 1px solid rgba(61, 214, 140, 0.15);
  border-radius: var(--radius);
  padding: 20px;
}

.demo-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: rgba(61, 214, 140, 0.1);
  padding: 3px 10px;
  border-radius: 6px;
  margin-bottom: 10px;
}

.demo-response {
  font-size: 14px;
  color: var(--fg);
  line-height: 1.65;
}

/* ===== HOW IT WORKS ===== */
.how-it-works {
  padding: 100px 24px;
  background: var(--bg-elevated);
}

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

.how-it-works h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  text-align: center;
  margin-bottom: 60px;
  color: #fff;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px;
}

.step {
  text-align: center;
}

.step-number {
  font-family: 'Space Grotesk', sans-serif;
  font-size: 48px;
  font-weight: 700;
  color: var(--accent);
  opacity: 0.3;
  margin-bottom: 16px;
}

.step h3 {
  font-size: 1.15rem;
  margin-bottom: 10px;
  color: #fff;
}

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

/* ===== RESPONSE CARDS ===== */
.response-cards {
  padding: 100px 24px;
  background: var(--bg);
}

.response-cards h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  text-align: center;
  margin-bottom: 12px;
  color: #fff;
}

.section-sub {
  text-align: center;
  color: var(--fg-muted);
  font-size: 1.05rem;
  margin-bottom: 56px;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.card {
  padding: 32px;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(255,255,255,0.05);
}

.card-public { background: var(--card-public); }
.card-private { background: var(--card-private); }
.card-summary { background: var(--card-summary); }
.card-recovery { background: var(--card-recovery); }

.card-icon {
  font-size: 28px;
  margin-bottom: 16px;
}

.card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
  color: #fff;
}

.card p {
  font-size: 14px;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* ===== WHY ===== */
.why {
  padding: 100px 24px;
  background: var(--bg-elevated);
}

.why h2 {
  font-size: clamp(1.5rem, 3.2vw, 2rem);
  text-align: center;
  margin-bottom: 56px;
  color: #fff;
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 40px 48px;
}

.why-item h3 {
  font-size: 1rem;
  color: var(--accent);
  margin-bottom: 8px;
}

.why-item p {
  font-size: 15px;
  color: var(--fg-muted);
  line-height: 1.65;
}

/* ===== CLOSING ===== */
.closing {
  padding: 120px 24px;
  background: 
    radial-gradient(ellipse 50% 50% at 50% 100%, rgba(61, 214, 140, 0.06), transparent),
    var(--bg);
}

.closing-content {
  max-width: 640px;
  margin: 0 auto;
  text-align: center;
}

.closing h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  color: #fff;
  margin-bottom: 20px;
}

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

/* ===== FOOTER ===== */
.site-footer {
  padding: 40px 24px;
  border-top: 1px solid rgba(255,255,255,0.05);
  background: var(--bg);
}

.footer-inner {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-brand {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: #fff;
}

.footer-note {
  font-size: 13px;
  color: var(--fg-muted);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .steps {
    grid-template-columns: 1fr;
    gap: 36px;
  }

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

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

  .footer-inner {
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .hero {
    min-height: auto;
    padding: 60px 20px 48px;
  }

  .how-it-works,
  .response-cards,
  .why {
    padding: 64px 20px;
  }

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