:root {
  --bg: #fafafa;
  --fg: #18181b;
  --muted: #71717a;
  --accent: #5b21b6;
  --accent-fg: #ffffff;
  --card: #ffffff;
  --border: #e4e4e7;
  --founding: #f59e0b;
  --max-width: 760px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0a0a0b;
    --fg: #f4f4f5;
    --muted: #a1a1aa;
    --card: #18181b;
    --border: #27272a;
  }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  font-size: 17px;
  line-height: 1.55;
  -webkit-font-smoothing: antialiased;
}

main { max-width: var(--max-width); margin: 0 auto; padding: 4rem 1.5rem 6rem; }

main.single { display: flex; align-items: center; min-height: 100vh; padding: 2rem 1.5rem; }
main.single .card { width: 100%; max-width: 480px; margin: 0 auto; }

#auth-callback { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 2rem 1.5rem; }

h1 { font-size: 2.5rem; line-height: 1.15; font-weight: 700; letter-spacing: -0.02em; margin: 0 0 1rem; }
h2 { font-size: 1.5rem; font-weight: 600; margin: 3rem 0 1rem; letter-spacing: -0.01em; }
h3 { font-size: 1.15rem; font-weight: 600; margin: 0 0 0.75rem; }

.hero { padding-top: 2rem; }
.lede { font-size: 1.15rem; color: var(--muted); margin: 0 0 2rem; max-width: 56ch; }

.waitlist { display: flex; gap: 0.5rem; max-width: 460px; }
.waitlist input {
  flex: 1; padding: 0.75rem 1rem; font: inherit; color: var(--fg);
  background: var(--card); border: 1px solid var(--border); border-radius: 8px;
}
.waitlist input:focus { outline: 2px solid var(--accent); outline-offset: -1px; border-color: transparent; }
.waitlist button {
  padding: 0.75rem 1.25rem; font: inherit; font-weight: 600;
  background: var(--accent); color: var(--accent-fg);
  border: 0; border-radius: 8px; cursor: pointer;
}
.waitlist button:disabled { opacity: 0.6; cursor: not-allowed; }
.waitlist button:not(:disabled):hover { filter: brightness(1.1); }

.how ol { padding-left: 1.25rem; margin: 0; }
.how li { margin-bottom: 0.5rem; }

.pricing .muted { margin-top: -0.5rem; margin-bottom: 1.5rem; }

.plans { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width: 640px) { .plans { grid-template-columns: 1fr; } }

.card {
  background: var(--card); border: 1px solid var(--border);
  border-radius: 12px; padding: 1.5rem;
}
.plan ul { padding-left: 1.1rem; margin: 1rem 0 0; }
.plan li { margin-bottom: 0.35rem; }
.plan .price { margin: 0; }
.plan .amount { font-size: 2rem; font-weight: 700; letter-spacing: -0.02em; }
.plan .per { color: var(--muted); margin-left: 0.25rem; }

.plan.founding { position: relative; border-color: var(--founding); }
.badge {
  position: absolute; top: -10px; right: 16px;
  background: var(--founding); color: #fff;
  font-size: 0.7rem; font-weight: 700; letter-spacing: 0.05em;
  text-transform: uppercase;
  padding: 0.15rem 0.5rem; border-radius: 4px;
}

.auth-card { max-width: 460px; }
.auth-card h1 { font-size: 1.5rem; margin-bottom: 0.5rem; }
.auth-card p { margin: 0 0 0.75rem; }

footer { margin-top: 4rem; padding-top: 2rem; border-top: 1px solid var(--border); }

.muted { color: var(--muted); }
.small { font-size: 0.875rem; }
a { color: var(--accent); }
@media (prefers-color-scheme: dark) { a { color: #c4b5fd; } }