/* oneserpent.com: one screen -- the mark, the name, "Coming soon", and the
   way into the app. The app's own colours (frontend/src/styles/tokens.css),
   light or dark as the visitor's system is; no web font, no script. */

:root {
  --bg: #ffffff;
  --text: #1b1f24;
  --muted: #4b5563;
  --accent: #0f5c5c;
  --on-accent: #ffffff;
  --glow: rgba(15, 92, 92, 0.1);
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1419;
    --text: #e6edf3;
    --muted: #b1bac4;
    --accent: #5fd4c8;
    --on-accent: #0f1419;
    --glow: rgba(95, 212, 200, 0.12);
    color-scheme: dark;
  }
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  background: radial-gradient(56rem 36rem at 50% 38%, var(--glow), transparent 70%), var(--bg);
  color: var(--text);
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  -webkit-font-smoothing: antialiased;
}

.stage {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 24px 16px 56px;
  text-align: center;
}

.mark {
  width: clamp(168px, 30vw, 272px);
  height: auto;
}

.mark-body {
  fill: none;
  stroke: var(--accent);
  stroke-linecap: round;
  stroke-linejoin: round;
}

.mark-head {
  fill: var(--accent);
}

.mark-eye {
  fill: var(--bg);
}

.wordmark {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 1rem;
  font-weight: 600;
  letter-spacing: 0.34em;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(3.25rem, 13vw, 9rem);
  font-weight: 800;
  line-height: 0.95;
  letter-spacing: -0.035em;
}

.signin {
  display: inline-block;
  margin-top: 32px;
  padding: 15px 38px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--on-accent);
  font-size: 1.0625rem;
  font-weight: 700;
  text-decoration: none;
}

.signin:hover {
  filter: brightness(1.08);
}

.signin:focus-visible {
  outline: 3px solid var(--text);
  outline-offset: 3px;
}

.foot {
  padding: 24px 16px;
  color: var(--muted);
  font-size: 0.875rem;
  text-align: center;
}