/* Sign-in page. Same tokens as app.css (docs/UX-SPEC.md). */

:root {
  --bg: #0B1B2B;
  --accent: #4DA3FF;
  --text: #E8F3FC;
  --muted: #A6BCD0;
  --on-accent: #06182A;
  color-scheme: dark;
}
:root[data-theme="light"] {
  --bg: #F4F8FC;
  --accent: #1769BA;
  --text: #102B43;
  --muted: #526A7D;
  --on-accent: #FFFFFF;
  color-scheme: light;
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme="dark"]) {
    --bg: #F4F8FC;
    --accent: #1769BA;
    --text: #102B43;
    --muted: #526A7D;
    --on-accent: #FFFFFF;
    color-scheme: light;
  }
}

*, *::before, *::after { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  display: grid;
  place-items: center;
  padding: 24px;
  background: var(--bg);
  color: var(--text);
  font: 16px/25px system-ui, "Segoe UI", Roboto, Vazirmatn, Tahoma, sans-serif;
}
.card { width: 100%; max-width: 340px; padding-bottom: 8vh; text-align: center; }
.logo { display: block; margin: 0 auto 20px; border-radius: 18px; }
h1 { margin: 0 0 8px; font-size: 28px; font-weight: 600; line-height: 36px; }
p { margin: 0 0 28px; color: var(--muted); }
.button {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 0 24px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--on-accent);
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
}
.button:hover { filter: brightness(1.08); }
.button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }