:root {
  --bg-base: #0a0a0c;
  --bg-surface: #111114;
  --bg-surface-elevated: #18181b;
  --border: #27272a;
  --border-hi: #3f3f46;
  --white: #ffffff;
  --muted: #a1a1aa;
  --accent: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-glow: rgba(37,99,235,0.18);
  --green: #10b981;
  --amber: #f59e0b;
  --container: 1200px;
  --radius: 20px;
}

*, *::before, *::after { margin:0; padding:0; box-sizing:border-box; }
html { scroll-behavior:smooth; }
body {
  font-family: 'Inter', system-ui, sans-serif;
  background: var(--bg-base);
  color: var(--white);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
  min-height: 100vh;
}

/* Ambient glow */
.glow-bg {
  position: fixed; top: 0; left: 0; right: 0; height: 600px;
  background: radial-gradient(ellipse 80% 50% at 50% 0%, rgba(37,99,235,0.1) 0%, transparent 70%);
  z-index: -1; pointer-events: none;
}

/* Layout */
.container { width: 100%; max-width: var(--container); margin: 0 auto; padding: 0 1.5rem; }
.section { padding: 5rem 0; }
.section-label {
  font-size: 0.75rem; font-weight: 700; letter-spacing: 1.5px; text-transform: uppercase;
  color: var(--accent); margin-bottom: 2rem;
}

/* Navbar */
.navbar {
  padding: 1.25rem 0; position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  backdrop-filter: blur(16px); border-bottom: 1px solid rgba(255,255,255,0.06);
  background: rgba(10,10,12,0.85);
}
.nav-content { max-width: var(--container); margin: 0 auto; padding: 0 1.5rem; display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.5rem; font-weight: 800; letter-spacing: -1.5px; text-decoration: none; color: var(--white); }
.logo .dot { color: var(--accent); }
.nav-links { display: flex; gap: 2rem; align-items: center; }
.nav-links a { text-decoration: none; color: var(--muted); font-size: 0.9rem; font-weight: 500; transition: color 0.2s; }
.nav-links a:hover { color: var(--white); }

/* Buttons */
.btn {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 0.75rem 1.6rem; font-size: 0.9rem; font-weight: 700;
  border-radius: 12px; cursor: pointer; border: none;
  text-decoration: none; font-family: inherit; transition: all 0.2s;
}
.btn-primary { background: var(--accent); color: #fff; box-shadow: 0 8px 24px var(--accent-glow); }
.btn-primary:hover { background: var(--accent-hover); transform: translateY(-2px); }
.btn-secondary { background: transparent; color: var(--white); border: 1px solid var(--border); }
.btn-secondary:hover { border-color: var(--border-hi); background: rgba(255,255,255,0.04); transform: translateY(-2px); }
.btn-large { padding: 1rem 2rem; font-size: 1rem; }

/* Hero */
.hero {
  padding: 10rem 0 4rem;
  text-align: center;
}
.hero-badge {
  display: inline-block; padding: 0.4rem 1rem;
  background: rgba(37,99,235,0.1); border: 1px solid rgba(37,99,235,0.25);
  border-radius: 100px; font-size: 0.7rem; font-weight: 700;
  letter-spacing: 1.5px; text-transform: uppercase; color: var(--accent);
  margin-bottom: 1.5rem;
}
.hero h1 {
  font-size: clamp(2.8rem, 7vw, 5rem); font-weight: 800;
  letter-spacing: -0.04em; line-height: 1.05; margin-bottom: 1.25rem;
  background: linear-gradient(160deg, #fff 40%, #71717a);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.hero p {
  font-size: clamp(1rem, 2vw, 1.15rem); color: var(--muted);
  max-width: 620px; margin: 0 auto 2.5rem; line-height: 1.7;
}

/* Method pills */
.method-pills { display: flex; flex-wrap: wrap; gap: 0.6rem; justify-content: center; }
.pill {
  padding: 0.45rem 1rem; background: var(--bg-surface); border: 1px solid var(--border);
  border-radius: 100px; font-size: 0.8rem; font-weight: 600; color: var(--muted);
}

/* Confirm Banner */
.confirm-banner-wrap { padding: 2.5rem 0 0; }
.confirm-banner {
  background: linear-gradient(135deg, rgba(255,60,0,0.1), rgba(255,60,0,0.03));
  border: 1px solid rgba(255,60,0,0.25); border-radius: 16px;
  padding: 1.5rem 2rem; display: flex; align-items: center;
  justify-content: space-between; flex-wrap: wrap; gap: 1rem;
}
.confirm-banner strong { color: var(--white); font-size: 1rem; display: block; margin-bottom: 0.2rem; }
.confirm-banner p { color: var(--muted); font-size: 0.875rem; margin: 0; }

/* Payments grid */
.payments-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.25rem;
}

/* Card base */
.payment-card {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  transition: border-color 0.2s, transform 0.2s, box-shadow 0.2s;
}
.payment-card:hover {
  border-color: var(--border-hi);
  transform: translateY(-4px);
  box-shadow: 0 20px 40px rgba(0,0,0,0.35);
}

/* Featured card (credit card) — spans full width */
.card-featured {
  grid-column: 1 / -1;
  background: linear-gradient(135deg, #111827, #0f172a);
  border-color: rgba(37,99,235,0.3);
  flex-direction: column;
}

.card-top { display: flex; gap: 1.25rem; align-items: flex-start; }
.payment-icon { font-size: 2rem; flex-shrink: 0; line-height: 1; }
.card-title-row { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.4rem; flex-wrap: wrap; }
.card-title-row h3 { font-size: 1.25rem; font-weight: 700; letter-spacing: -0.03em; }
.payment-desc { color: var(--muted); font-size: 0.875rem; line-height: 1.55; margin: 0; }

/* Badges */
.badge {
  font-size: 0.65rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.5px; padding: 0.25rem 0.65rem; border-radius: 100px;
}
.badge-green { background: rgba(16,185,129,0.12); color: #10b981; border: 1px solid rgba(16,185,129,0.2); }
.badge-blue  { background: rgba(37,99,235,0.1);  color: #60a5fa; border: 1px solid rgba(37,99,235,0.25); }
.badge-amber { background: rgba(245,158,11,0.1); color: #f59e0b; border: 1px solid rgba(245,158,11,0.2); }

/* Detail list */
.detail-list { display: flex; flex-direction: column; gap: 0; border: 1px solid var(--border); border-radius: 12px; overflow: hidden; }
.detail-row {
  display: flex; justify-content: space-between; align-items: baseline;
  padding: 0.6rem 0.85rem; gap: 1rem;
  font-size: 0.82rem; border-bottom: 1px solid var(--border);
}
.detail-row:last-child { border-bottom: none; }
.detail-row span:first-child { color: var(--muted); flex-shrink: 0; }
.detail-row span:last-child { color: var(--white); font-weight: 600; text-align: right; }
.detail-row.warning { background: rgba(245,158,11,0.06); }
.detail-row.warning span:first-child { color: #f59e0b; }

/* Mono */
.mono { font-family: 'SF Mono', 'Fira Code', monospace; letter-spacing: 0.3px; color: #60a5fa !important; }
.small { font-size: 0.72rem !important; word-break: break-all; }

/* CC buttons */
.cc-buttons { display: flex; gap: 0.6rem; flex-wrap: wrap; }
.btn-payment {
  padding: 0.55rem 1.1rem; font-size: 0.85rem; font-weight: 700;
  border-radius: 10px; background: rgba(37,99,235,0.12);
  color: #60a5fa; border: 1px solid rgba(37,99,235,0.25);
  text-decoration: none; transition: all 0.2s;
}
.btn-payment:hover { background: rgba(37,99,235,0.22); border-color: rgba(37,99,235,0.45); transform: translateY(-2px); }
.btn-block { width: 100%; }

.payment-actions { display: flex; gap: 0.75rem; flex-wrap: wrap; }

/* Requirements */
.reqs-section { background: var(--bg-surface); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); padding: 4rem 0; }
.requirements-grid { display: grid; grid-template-columns: repeat(4,1fr); gap: 1rem; margin-top: 0; }
.req-item {
  background: var(--bg-base); border: 1px solid var(--border); border-radius: 16px;
  padding: 1.5rem; text-align: center;
}
.req-icon { font-size: 1.5rem; margin-bottom: 0.75rem; }
.req-item p { color: var(--muted); font-size: 0.875rem; line-height: 1.5; }
.req-item strong { color: var(--white); }

/* CTA */
.cta-box {
  background: linear-gradient(135deg, var(--bg-surface), var(--bg-surface-elevated));
  border: 1px solid var(--border); border-radius: 32px;
  padding: 5rem 4rem; text-align: center;
}
.cta-box h2 { font-size: clamp(2rem,5vw,3rem); font-weight: 800; letter-spacing:-0.04em; margin-bottom: 1rem; }
.cta-box p { font-size: 1.05rem; color: var(--muted); margin-bottom: 2.5rem; max-width: 520px; margin-left: auto; margin-right: auto; }
.hero-actions { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; }

/* Footer */
.footer { padding: 4rem 0; border-top: 1px solid var(--border); }
.footer-content { display: flex; justify-content: space-between; align-items: center; margin-bottom: 2rem; }
.footer-bottom { text-align: center; padding-top: 1.5rem; border-top: 1px solid rgba(255,255,255,0.05); color: var(--muted); font-size: 0.82rem; }

/* Mobile nav toggle */
.mobile-menu-toggle {
  display: none; flex-direction: column; justify-content: space-between;
  width: 28px; height: 20px; background: transparent; border: none;
  cursor: pointer; z-index: 1001; padding: 0;
}
.mobile-menu-toggle span { width: 100%; height: 2px; background: var(--white); border-radius: 2px; transition: all 0.3s; }

/* Responsive */
@media (max-width: 1100px) {
  .payments-grid { grid-template-columns: repeat(2,1fr); }
  .card-featured { grid-column: 1 / -1; }
  .requirements-grid { grid-template-columns: repeat(2,1fr); }
}

@media (max-width: 768px) {
  .hero { padding: 8rem 0 3rem; }
  .payments-grid { grid-template-columns: 1fr; }
  .card-featured { grid-column: 1; }
  .requirements-grid { grid-template-columns: 1fr 1fr; }
  .card-top { flex-direction: row; }
  .cta-box { padding: 3rem 1.5rem; border-radius: 20px; }
  .footer-content { flex-direction: column; gap: 1.5rem; text-align: center; }
  .hero-actions { flex-direction: column; align-items: center; }
  .mobile-menu-toggle { display: flex; }
  .nav-links { display: none; }
  .nav-links.active {
    display: flex; position: fixed; top: 68px; left: 0; right: 0;
    background: rgba(10,10,12,0.98); flex-direction: column;
    padding: 2rem; gap: 1.5rem; border-bottom: 1px solid var(--border);
    backdrop-filter: blur(16px);
  }
}

@media (max-width: 480px) {
  .requirements-grid { grid-template-columns: 1fr; }
  .confirm-banner { flex-direction: column; }
}