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

:root {
  --bg: #111318;
  --surface: #1a1d24;
  --surface2: #23272f;
  --surface3: #2e333c;
  --text: #e8e9ec;
  --text-dim: #6b7280;
  --accent: #dca53b;
  --green: #34d399;
  --red: #f87171;
  --blue: #60a5fa;
}

html {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  scroll-behavior: smooth;
}

body { overflow-x: hidden; }

/* ===== Nav ===== */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 50;
  background: rgba(17, 19, 24, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--surface2);
}

.nav-inner {
  max-width: 1080px;
  margin: 0 auto;
  padding: 14px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  text-decoration: none;
}

.logo img {
  height: 28px;
  display: block;
}

.nav-cta {
  background: var(--accent);
  color: #111318;
  padding: 8px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 700;
  text-decoration: none;
  transition: opacity 0.15s;
}

.nav-cta:hover { opacity: 0.85; }

/* ===== Hero ===== */
.hero {
  padding: 100px 24px 60px;
  min-height: 100vh;
  display: flex;
  align-items: center;
}

.hero-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
  width: 100%;
}

.hero-text h1 {
  font-size: 56px;
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.05;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 18px;
  line-height: 1.6;
  color: var(--text-dim);
  margin-bottom: 32px;
  max-width: 480px;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
  align-items: flex-start;
}

.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: #111318;
  padding: 16px 40px;
  border-radius: 12px;
  font-size: 17px;
  font-weight: 800;
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  transition: opacity 0.15s, transform 0.1s;
}

.btn-primary:hover { opacity: 0.9; }
.btn-primary:active { transform: scale(0.98); }

.hero-hint {
  font-size: 13px;
  color: var(--text-dim);
}

/* ===== Phone Mockup ===== */
.hero-phone {
  display: flex;
  justify-content: center;
}

.phone-frame {
  width: 280px;
  background: var(--surface);
  border-radius: 32px;
  padding: 12px;
  border: 2px solid var(--surface2);
  box-shadow: 0 40px 80px rgba(0,0,0,0.5);
}

.phone-screen {
  background: var(--bg);
  border-radius: 22px;
  padding: 16px 12px 12px;
  overflow: hidden;
}

.mock-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px;
  background: var(--surface);
  border-radius: 8px;
  margin-bottom: 8px;
}

.mock-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--green);
  box-shadow: 0 0 6px rgba(52, 211, 153, 0.5);
}

.mock-label {
  font-size: 12px;
  font-weight: 600;
  color: var(--text);
}

.mock-chips {
  display: flex;
  gap: 4px;
  margin-bottom: 6px;
}

.mock-chip {
  flex: 1;
  background: var(--surface);
  border-radius: 6px;
  padding: 5px 4px;
  text-align: center;
}

.mc-label {
  display: block;
  font-size: 8px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.3px;
  color: var(--text-dim);
}

.mc-val {
  display: block;
  font-size: 13px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  margin-top: 1px;
}

.mock-chip.green .mc-val { color: var(--green); }
.mock-chip.red .mc-val { color: var(--red); }
.mock-chip.blue .mc-val { color: var(--blue); }

.mock-spendable {
  display: flex;
  justify-content: space-between;
  padding: 6px 10px;
  background: var(--surface);
  border-radius: 6px;
  font-size: 10px;
  font-weight: 700;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.3px;
  margin-bottom: 10px;
}

.mock-spend-val {
  color: #fbbf24;
  font-size: 12px;
  text-transform: none;
}

.mock-amount {
  text-align: center;
  font-size: 36px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  color: var(--text);
  padding: 12px 0 4px;
  letter-spacing: -1px;
}

.mock-amount .mock-num { color: var(--text); }

.mock-cursor {
  display: inline-block;
  width: 2px;
  height: 28px;
  background: var(--accent);
  margin-left: 1px;
  vertical-align: middle;
  animation: blink 1s step-end infinite;
}

@keyframes blink { 50% { opacity: 0; } }

.mock-note {
  text-align: center;
  font-size: 11px;
  color: var(--text-dim);
  padding: 4px 0 8px;
}

.mock-buttons {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 6px;
  margin-bottom: 8px;
}

.mock-btn {
  padding: 10px 4px;
  border-radius: 8px;
  text-align: center;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.5px;
}

.mock-btn.red { background: var(--red); color: white; }
.mock-btn.green { background: var(--green); color: #111318; }
.mock-btn.blue { background: var(--blue); color: #111318; }

.mock-numpad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
}

.mock-key {
  background: var(--surface);
  border-radius: 6px;
  padding: 8px;
  text-align: center;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.mock-key.dim { color: var(--text-dim); }

/* ===== Features ===== */
.features {
  padding: 80px 24px;
  border-top: 1px solid var(--surface2);
}

.features-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 40px;
}

.feature-icon {
  width: 44px;
  height: 44px;
  background: var(--surface);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
  color: var(--accent);
}

.feature-icon svg {
  width: 22px;
  height: 22px;
}

.feature h3 {
  font-size: 18px;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.3px;
}

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

/* ===== How It Works ===== */
.how {
  padding: 80px 24px;
  border-top: 1px solid var(--surface2);
}

.how-inner {
  max-width: 640px;
  margin: 0 auto;
}

.how h2 {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 40px;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.step {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.step-num {
  width: 36px;
  height: 36px;
  background: var(--accent);
  color: #111318;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 16px;
  font-weight: 800;
  flex-shrink: 0;
}

.step-text h4 {
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 4px;
}

.step-text p {
  font-size: 14px;
  line-height: 1.6;
  color: var(--text-dim);
}

/* ===== CTA ===== */
.cta {
  padding: 80px 24px;
  border-top: 1px solid var(--surface2);
  text-align: center;
}

.cta-inner {
  max-width: 480px;
  margin: 0 auto;
}

.cta h2 {
  font-size: 36px;
  font-weight: 800;
  letter-spacing: -1px;
  margin-bottom: 12px;
}

.cta p {
  font-size: 16px;
  color: var(--text-dim);
  margin-bottom: 28px;
}

/* ===== Footer ===== */
.footer {
  padding: 24px;
  border-top: 1px solid var(--surface2);
}

.footer-inner {
  max-width: 1080px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.footer-logo {
  font-size: 16px;
  font-weight: 800;
  color: var(--text-dim);
  letter-spacing: -0.3px;
}

.footer-copy {
  font-size: 13px;
  color: var(--text-dim);
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .hero {
    padding: 80px 20px 40px;
    min-height: auto;
  }

  .hero-inner {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .hero-text h1 {
    font-size: 36px;
    letter-spacing: -1px;
  }

  .hero-sub {
    font-size: 16px;
    margin: 0 auto 28px;
  }

  .hero-actions {
    align-items: center;
  }

  .hero-phone { order: -1; }

  .phone-frame {
    width: 240px;
  }

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

  .feature {
    text-align: center;
  }

  .feature-icon {
    margin: 0 auto 16px;
  }

  .how h2, .cta h2 {
    font-size: 28px;
  }

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

/* ===== Reduced Motion ===== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}