/* ── Reset & base ────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:        #0d0f14;
  --bg2:       #13161d;
  --bg3:       #1a1d26;
  --border:    #2a2d38;
  --text:      #e2e4eb;
  --text-muted:#8b8fa8;
  --accent:    #635bff;
  --green:     #10b981;
  --red:       #ef4444;
  --orange:    #f59e0b;
  --blue:      #3b82f6;
  --purple:    #8b5cf6;
  --radius:    10px;
  --font:      'Inter', 'Segoe UI', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 15px;
  line-height: 1.6;
}

/* ── Nav ─────────────────────────────────────────────────────────────────── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 40px;
  background: rgba(13,15,20,0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 17px;
  letter-spacing: -.3px;
}

.brand-dot {
  width: 10px;
  height: 10px;
  background: var(--green);
  border-radius: 50%;
  box-shadow: 0 0 8px var(--green);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%,100% { opacity: 1; }
  50%      { opacity: .4; }
}

.nav-badge {
  font-size: 11px;
  font-weight: 600;
  background: #635bff22;
  color: var(--accent);
  border: 1px solid #635bff44;
  border-radius: 20px;
  padding: 2px 10px;
  text-transform: uppercase;
  letter-spacing: .5px;
}

.nav-links { display: flex; gap: 28px; }
.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 14px;
  transition: color .2s;
}
.nav-links a:hover { color: var(--text); }

/* ── Hero ────────────────────────────────────────────────────────────────── */
.hero {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
  padding: 80px 60px;
  max-width: 1200px;
  margin: 0 auto;
}

.hero-label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--accent);
  margin-bottom: 16px;
}

.hero h1 {
  font-size: 44px;
  font-weight: 800;
  letter-spacing: -1.5px;
  line-height: 1.1;
  margin-bottom: 18px;
}

.hero-sub {
  color: var(--text-muted);
  font-size: 16px;
  line-height: 1.7;
  margin-bottom: 28px;
}

.hero-pills { display: flex; flex-wrap: wrap; gap: 10px; }

.pill {
  font-size: 12px;
  font-weight: 600;
  padding: 5px 14px;
  border-radius: 20px;
  border: 1px solid;
}
.pill-green  { color: var(--green);  border-color: #10b98144; background: #10b98110; }
.pill-blue   { color: var(--blue);   border-color: #3b82f644; background: #3b82f610; }
.pill-purple { color: var(--purple); border-color: #8b5cf644; background: #8b5cf610; }
.pill-orange { color: var(--orange); border-color: #f59e0b44; background: #f59e0b10; }

/* ── Terminal ────────────────────────────────────────────────────────────── */
.hero-terminal, .sim-log, .webhook-code pre {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
  background: #1e2130;
  border-bottom: 1px solid var(--border);
}

.dot { width: 10px; height: 10px; border-radius: 50%; }
.dot.red    { background: #ff5f57; }
.dot.yellow { background: #febc2e; }
.dot.green  { background: #28c840; }

.terminal-title {
  margin-left: 8px;
  font-size: 12px;
  color: var(--text-muted);
  flex: 1;
  text-align: center;
}

.terminal-body {
  background: #0a0c12;
  padding: 18px 20px;
  font-family: 'JetBrains Mono', 'Fira Code', 'Consolas', monospace;
  font-size: 12px;
  line-height: 1.9;
  min-height: 160px;
  max-height: 340px;
  overflow-y: auto;
}

.log-line { display: flex; gap: 10px; animation: fadeIn .3s ease; }
.log-ts   { color: #4b5563; flex-shrink: 0; }
.log-info { color: #60a5fa; }
.log-ok   { color: #34d399; }
.log-warn { color: #fbbf24; }
.log-err  { color: #f87171; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(4px); } to { opacity: 1; } }

/* ── Sections ────────────────────────────────────────────────────────────── */
.section {
  padding: 80px 60px;
  max-width: 1200px;
  margin: 0 auto;
}

.section-dark {
  max-width: 100%;
  background: var(--bg2);
  padding: 80px 0;
}
.section-dark > * { max-width: 1200px; margin-left: auto; margin-right: auto; padding-left: 60px; padding-right: 60px; }
.section-dark .section-header { padding-left: 60px; padding-right: 60px; }

.section-header {
  display: flex;
  align-items: flex-start;
  gap: 18px;
  margin-bottom: 40px;
}

.section-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  flex-shrink: 0;
}

.section-header h2 {
  font-size: 28px;
  font-weight: 700;
  letter-spacing: -.5px;
  margin-bottom: 4px;
}

.section-desc { color: var(--text-muted); font-size: 14px; }

/* ── Payment flow steps ──────────────────────────────────────────────────── */
.flow-steps {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 36px;
  flex-wrap: wrap;
}

.flow-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 14px 20px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  min-width: 120px;
  opacity: .5;
  transition: all .3s;
}
.flow-step.active { opacity: 1; border-color: var(--accent); background: #635bff12; }
.flow-step.done   { opacity: 1; border-color: var(--green);  background: #10b98112; }

.step-num {
  width: 28px; height: 28px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  display: flex; align-items: center; justify-content: center;
}
.flow-step.done .step-num { background: var(--green); }
.step-label { font-size: 12px; font-weight: 600; color: var(--text-muted); }
.flow-arrow { color: var(--text-muted); font-size: 18px; }

/* ── Plan cards ──────────────────────────────────────────────────────────── */
.plans-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
  margin-bottom: 36px;
}

.plan-card {
  background: var(--bg3);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 18px;
  cursor: pointer;
  transition: all .2s;
  text-align: center;
}
.plan-card:hover   { border-color: #635bff88; transform: translateY(-2px); }
.plan-card.selected { border-color: var(--accent); background: #635bff12; }

.plan-name  { font-weight: 700; font-size: 17px; margin-bottom: 8px; }
.plan-price { font-size: 26px; font-weight: 800; color: var(--accent); }
.plan-price span { font-size: 13px; color: var(--text-muted); font-weight: 400; }
.plan-specs { font-size: 12px; color: var(--text-muted); margin-top: 10px; line-height: 1.8; }

.plan-btn {
  margin-top: 16px;
  width: 100%;
  padding: 9px 0;
  background: var(--accent);
  color: #fff;
  border: none;
  border-radius: 7px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: opacity .2s;
}
.plan-btn:hover { opacity: .85; }

/* ── Checkout result ─────────────────────────────────────────────────────── */
.checkout-result { margin-bottom: 36px; }
.result-card {
  display: flex;
  gap: 20px;
  background: #10b98112;
  border: 1px solid #10b98144;
  border-radius: var(--radius);
  padding: 24px 28px;
}
.result-icon { font-size: 32px; flex-shrink: 0; }
.result-card h3 { font-size: 17px; margin-bottom: 12px; }
.result-fields { display: flex; flex-direction: column; gap: 6px; margin-bottom: 14px; }
.result-fields div { font-size: 13px; color: var(--text-muted); }
.result-fields strong { color: var(--text); }
.result-note { font-size: 13px; color: var(--text-muted); }

/* ── Invoice table ───────────────────────────────────────────────────────── */
.invoices-section h3 { font-size: 17px; font-weight: 600; margin-bottom: 16px; }

.invoice-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}
.invoice-table th {
  text-align: left;
  padding: 10px 14px;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
  font-weight: 600;
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: .5px;
}
.invoice-table td {
  padding: 12px 14px;
  border-bottom: 1px solid #1e2130;
}
.loading-cell { text-align: center; color: var(--text-muted); }
.badge-paid {
  font-size: 11px;
  font-weight: 600;
  background: #10b98120;
  color: var(--green);
  border: 1px solid #10b98140;
  border-radius: 20px;
  padding: 2px 10px;
}

/* ── Metrics ─────────────────────────────────────────────────────────────── */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
  padding: 0 60px;
}

.metric-card {
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 20px;
}
.metric-label { font-size: 12px; color: var(--text-muted); font-weight: 600; text-transform: uppercase; letter-spacing: .5px; margin-bottom: 8px; }
.metric-value { font-size: 32px; font-weight: 800; letter-spacing: -1px; margin-bottom: 12px; }
.metric-bar-wrap { background: #1e2130; border-radius: 4px; height: 8px; overflow: hidden; margin-bottom: 8px; }
.metric-bar { height: 100%; border-radius: 4px; width: 0%; transition: width .6s ease, background .4s; }
.metric-sub { font-size: 12px; color: var(--text-muted); }

.alert-banner {
  margin: 0 60px 24px;
  padding: 14px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  animation: fadeIn .3s ease;
}
.alert-banner.warning  { background: #f59e0b18; border: 1px solid #f59e0b44; color: #fbbf24; }
.alert-banner.critical { background: #ef444418; border: 1px solid #ef444444; color: #f87171; }

/* ── Simulate buttons ────────────────────────────────────────────────────── */
.simulate-btns {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  padding: 0 60px;
  margin-bottom: 24px;
}

.btn {
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all .2s;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { opacity: .85; }
.btn-warning { background: #f59e0b20; color: var(--orange); border: 1px solid #f59e0b44; }
.btn-warning:hover { background: #f59e0b30; }
.btn-success { background: #10b98120; color: var(--green); border: 1px solid #10b98144; }
.btn-success:hover { background: #10b98130; }
.btn-danger  { background: #ef444420; color: var(--red);   border: 1px solid #ef444444; }
.btn-danger:hover  { background: #ef444430; }
.btn-outline { background: transparent; color: var(--text); border: 1px solid var(--border); }
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-lg { padding: 14px 32px; font-size: 16px; }

.sim-log { margin: 0 0 0 0; }
.section-dark .sim-log { margin: 0 60px; }

/* ── Monitor info ────────────────────────────────────────────────────────── */
.monitor-info {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 0 60px;
  margin-bottom: 28px;
}
.info-item {
  display: flex;
  gap: 14px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
}
.info-icon { font-size: 22px; flex-shrink: 0; margin-top: 2px; }
.info-item strong { display: block; font-size: 15px; margin-bottom: 6px; }
.info-item p  { font-size: 13px; color: var(--text-muted); line-height: 1.6; }
.info-item code { font-family: monospace; font-size: 12px; color: var(--blue); }

/* ── Auto-scale flow ─────────────────────────────────────────────────────── */
.autoscale-flow {
  display: flex;
  align-items: flex-start;
  gap: 8px;
  margin-bottom: 36px;
  overflow-x: auto;
  padding-bottom: 8px;
}
.as-step {
  flex: 1;
  min-width: 150px;
  background: var(--bg3);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 16px;
  text-align: center;
}
.as-icon  { font-size: 26px; margin-bottom: 8px; }
.as-label { font-weight: 700; font-size: 14px; margin-bottom: 8px; }
.as-desc  { font-size: 12px; color: var(--text-muted); line-height: 1.5; }
.as-desc code { font-size: 11px; color: var(--blue); }
.as-arrow { color: var(--text-muted); font-size: 22px; align-self: center; flex-shrink: 0; }
.as-demo { text-align: center; margin-bottom: 24px; }

/* ── Email tabs ──────────────────────────────────────────────────────────── */
.email-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  padding: 0 60px;
  margin-bottom: 20px;
}
.etab {
  padding: 8px 18px;
  background: var(--bg3);
  border: 1px solid var(--border);
  color: var(--text-muted);
  border-radius: 8px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all .2s;
}
.etab.active  { background: #f59e0b20; border-color: #f59e0b44; color: var(--orange); }
.etab:hover:not(.active) { border-color: #f59e0b44; color: var(--text); }

.email-preview-wrap {
  margin: 0 60px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: #f4f4f5;
}
.email-preview-wrap iframe {
  width: 100%;
  height: 560px;
  border: none;
  display: block;
}

/* ── Webhook section ─────────────────────────────────────────────────────── */
.webhook-events { display: flex; gap: 14px; flex-wrap: wrap; margin-bottom: 24px; }

.webhook-code { margin-top: 32px; }
.webhook-code h3 { font-size: 16px; font-weight: 600; margin-bottom: 14px; }
.webhook-code pre {
  background: #0a0c12;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  font-size: 12px;
  line-height: 1.8;
  overflow-x: auto;
}
.webhook-code code { color: #e2e4eb; font-family: 'JetBrains Mono', 'Fira Code', monospace; }

/* ── Footer ──────────────────────────────────────────────────────────────── */
footer {
  border-top: 1px solid var(--border);
  padding: 32px 60px;
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
}
.footer-brand { font-weight: 800; font-size: 16px; }
.footer-links { display: flex; gap: 12px; align-items: center; font-size: 13px; color: var(--text-muted); }
.footer-links a { color: var(--accent); text-decoration: none; }
.footer-sep { color: var(--border); }
.footer-stack { font-size: 12px; color: var(--text-muted); }

/* ── Utilities ───────────────────────────────────────────────────────────── */
.hidden { display: none !important; }

code {
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 12px;
  background: #1e2130;
  padding: 2px 6px;
  border-radius: 4px;
  color: var(--blue);
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 900px) {
  .hero { grid-template-columns: 1fr; padding: 48px 24px; }
  .hero h1 { font-size: 32px; }
  .section { padding: 60px 24px; }
  .section-dark .section-header,
  .section-dark .metrics-grid,
  .section-dark .monitor-info,
  .section-dark .simulate-btns,
  .section-dark .sim-log,
  .section-dark .email-tabs,
  .section-dark .email-preview-wrap { padding-left: 24px; padding-right: 24px; }
  .autoscale-flow { flex-direction: column; }
  .as-arrow { transform: rotate(90deg); align-self: center; }
  nav { padding: 14px 24px; }
  .nav-links { display: none; }
  .monitor-info { grid-template-columns: 1fr; }
  footer { padding: 24px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}