:root {
  color-scheme: light dark;
  --bg: #0b0b12;
  --card: #15151f;
  --text: #f4f4f8;
  --muted: #a3a3b5;
  --primary: #6d28d9;
  --border: #2a2a3a;
}
@media (prefers-color-scheme: light) {
  :root {
    --bg: #f5f5fa;
    --card: #ffffff;
    --text: #14141f;
    --muted: #5d5d72;
    --border: #e3e3ee;
  }
}
* {
  box-sizing: border-box;
}
html,
body {
  height: 100%;
  margin: 0;
}
body {
  display: grid;
  place-items: center;
  padding: 16px;
  background: var(--bg);
  color: var(--text);
  font-family:
    system-ui,
    -apple-system,
    "Segoe UI",
    Roboto,
    sans-serif;
}
.card {
  width: 100%;
  max-width: 400px;
  padding: 32px 24px;
  border: 1px solid var(--border);
  border-radius: 16px;
  background: var(--card);
  text-align: center;
}
.brand {
  margin: 0 0 24px;
  font-size: 18px;
  letter-spacing: 0.04em;
}
.lead {
  margin: 0 0 8px;
  font-size: 16px;
  font-weight: 600;
}
.muted {
  margin: 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.5;
}
.foot {
  margin: 28px 0 0;
  color: var(--muted);
  font-size: 12px;
}
.actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 24px;
}
.btn {
  display: block;
  width: 100%;
  min-height: 44px;
  padding: 12px 16px;
  border: 1px solid transparent;
  border-radius: 10px;
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}
.btn-primary {
  background: var(--primary);
  color: #fff;
}
.btn-ghost {
  border-color: var(--border);
  background: transparent;
  color: var(--text);
}
.btn:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}
.spinner {
  width: 36px;
  height: 36px;
  margin: 0 auto 16px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.9s linear infinite;
}
@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}
@media (prefers-reduced-motion: reduce) {
  .spinner {
    animation: none;
  }
}