/* Mirrors the app's neutral default scheme (client/src/index.css), dark first:
   this page shares the launch screen's background and must not flash. */
:root {
  --bg: #09090b;
  --surface: #18181b;
  --edge: #27272a;
  --ink: #fafafa;
  --muted: #a1a1aa;
  --accent: #e4e4e7;
  --accent-ink: #09090b;
  --danger: #f87171;
  color-scheme: dark;
}

@media (prefers-color-scheme: light) {
  :root {
    --bg: #ffffff;
    --surface: #f4f4f5;
    --edge: #e4e4e7;
    --ink: #111827;
    --muted: #6b7280;
    --accent: #111827;
    --accent-ink: #ffffff;
    --danger: #dc2626;
    color-scheme: light;
  }
  .shell-logo { filter: invert(1); }
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  -webkit-text-size-adjust: 100%;
}

.shell {
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 12px;
  max-width: 420px;
  margin: 0 auto;
  padding: calc(env(safe-area-inset-top) + 24px) 24px calc(env(safe-area-inset-bottom) + 24px);
}

.shell-logo { width: 56px; height: 56px; margin-bottom: 8px; }
.shell-title { font-size: 1.5rem; font-weight: 600; margin: 0; }
.shell-hint { color: var(--muted); margin: 0 0 12px; line-height: 1.5; overflow-wrap: anywhere; }

.shell-form { display: flex; flex-direction: column; gap: 12px; }

.shell-input {
  font: inherit;
  font-size: 1rem;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid var(--edge);
  background: var(--surface);
  color: var(--ink);
  outline: none;
}
.shell-input:focus { border-color: var(--accent); }

.shell-button {
  font: inherit;
  font-weight: 600;
  padding: 14px 16px;
  border: 0;
  border-radius: 12px;
  background: var(--accent);
  color: var(--accent-ink);
}
.shell-button:disabled { opacity: 0.6; }

.shell-link {
  font: inherit;
  padding: 10px;
  border: 0;
  background: none;
  color: var(--muted);
}

.shell-error { color: var(--danger); margin: 0; min-height: 1.5em; line-height: 1.5; }