:root {
  /* Foundations: GitHub/Linear dark with Vercel/Linear hierarchy */
  --bg: #0B0F14;
  --panel: #0f141a;       /* slightly lifted from bg */
  --panel-alt: #0b1117;
  --text: #F5F7FA;        /* primary text */
  --muted: #9AA4B2;       /* secondary text */
  --border: #1F2937;      /* subtle card/border */

  /* Accent: Supabase-like mint for Postgres category cue */
  --brand: #34D399;       /* primary accent / CTA */
  --brand-strong: #34D399;/* no gradient; keep equal for consistency */
  --accent: #34D399;
  --warning: #F59E0B;     /* optional warning/status */

  --danger: #e55353;
  --shadow: 0 8px 24px rgba(0,0,0,0.35);
  --radius: 12px;

  /* Surfaces for chips/code */
  --chip-bg: #121821;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial, "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", sans-serif;
  color: var(--text);
  background: radial-gradient(1200px 800px at 70% -10%, rgba(255,255,255,0.03), transparent 60%),
              radial-gradient(900px 600px at -10% -20%, rgba(255,255,255,0.025), transparent 50%),
              var(--bg);
  line-height: 1.6;
}

.container {
  width: 100%;
  max-width: 1000px;
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  border-bottom: 1px solid var(--border);
  background: linear-gradient(to bottom, rgba(2,4,8,0.6), rgba(2,4,8,0));
  position: sticky;
  top: 0;
  backdrop-filter: blur(8px);
  z-index: 10;
}
.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 64px;
}
.logo {
  font-weight: 700;
  letter-spacing: 0.5px;
  font-size: 18px;
}
.beta-tag {
  color: var(--muted);
  font-size: 13px;
}

.hero {
  padding: 64px 0 24px;
}
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  background: rgba(255,255,255,0.04);
  border: 1px solid var(--border);
  box-shadow: none;
}
.hero-title {
  margin: 8px 0 12px;
  font-size: clamp(28px, 4.5vw, 46px);
  line-height: 1.1;
  letter-spacing: -0.02em;
}
.hero-subtitle {
  margin: 0;
  color: var(--muted);
  font-size: clamp(15px, 2.2vw, 18px);
}
code {
  background: var(--chip-bg);
  color: #d4dbe3;
  padding: 1px 6px;
  border-radius: 6px;
  border: 1px solid var(--border);
}

.waitlist-card {
  margin-top: 28px;
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
}
.card-title {
  margin: 0 0 4px;
  font-size: 18px;
}
.card-subtitle {
  margin: 0 0 12px;
  color: var(--muted);
  font-size: 14px;
}

.waitlist-form .form-row {
  display: flex;
  gap: 10px;
  align-items: center;
}
.waitlist-form input[type="email"] {
  flex: 1;
  background: var(--panel);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 14px;
  border-radius: 10px;
  font-size: 15px;
  outline: none;
}
.waitlist-form input[type="email"]::placeholder {
  color: #94a3b8;
}
.waitlist-form button {
  /* Vercel-like restraint: solid mint, no gradient */
  background: var(--brand);
  color: #0B0F14; /* dark text on mint */
  border: none;
  font-weight: 700;
  padding: 12px 14px;
  border-radius: 10px;
  cursor: pointer;
  transition: transform 0.04s ease;
  box-shadow: 0 6px 16px rgba(52, 211, 153, 0.25);
}
.waitlist-form button:hover {
  transform: translateY(-1px);
}
.waitlist-form button:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}
/* Focus states for accessibility */
.waitlist-form input[type="email"]:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 4px rgba(52, 211, 153, 0.18);
}
.waitlist-form button:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 2px;
}
.form-hint {
  margin: 8px 2px 0;
  color: var(--muted);
  font-size: 12px;
}
.form-status {
  margin: 10px 2px 0;
  font-size: 14px;
}
.form-status.success { color: #6ee7b7; }
.form-status.error { color: var(--danger); }
.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 1px, 1px);
  white-space: nowrap;
  border: 0;
}

.section {
  padding: 36px 0;
}
.section.alt {
  background: linear-gradient(0deg, rgba(255,255,255,0.02), rgba(255,255,255,0));
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}
.section-header {
  margin-bottom: 14px;
}
.section-kicker {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}
.section-title {
  margin: 0 0 6px;
  font-size: 18px;
}
.section-body {
  margin: 0;
  color: var(--muted);
}
.card {
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 10px;
  height: 100%;
}
.card-heading {
  margin: 0;
  font-size: 16px;
}
.grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: 16px;
  align-items: stretch;
}
.chips {
  list-style: none;
  margin: 2px 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.chips li {
  display: inline-flex;
  align-items: center;
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  color: var(--text);
  background: var(--chip-bg);
  border: 1px solid var(--border);
}
.note {
  color: var(--muted);
  font-size: 13px;
}
.pull-quote {
  margin-top: 18px;
  padding: 14px 16px;
  border-left: 3px solid var(--border);
  background: linear-gradient(90deg, rgba(255,255,255,0.03), rgba(0,0,0,0));
  border-radius: 8px;
  color: var(--text);
}
.pricing-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.bullets {
  margin: 0;
  padding-left: 18px;
  color: var(--muted);
}
.bullets li { margin-bottom: 6px; }

@media (min-width: 840px) {
  .grid-2 { grid-template-columns: 1fr 1fr; gap: 20px; }
  .hero { padding: 80px 0 32px; }
  .waitlist-card { padding: 24px; }
}

.site-footer {
  padding: 28px 0 40px;
}
.foot {
  display: flex;
  gap: 8px;
  align-items: baseline;
  color: var(--muted);
  font-size: 13px;
}
.foot-brand {
  color: var(--text);
  font-weight: 600;
}
.small-muted {
  color: var(--muted);
  font-size: 13px;
}