/* Chater admin — login */
* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font-sans);
  background: var(--canvas);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  line-height: 1.5;
  transition: background-color var(--duration-normal) var(--ease-out),
    color var(--duration-normal) var(--ease-out);
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(ellipse 70% 45% at 50% -10%, var(--accent-subtle), transparent),
    radial-gradient(ellipse 50% 35% at 100% 100%, rgba(113, 113, 122, 0.06), transparent);
  pointer-events: none;
}

.login-wrap {
  position: relative;
  width: 100%;
  max-width: 400px;
}

.login-brand {
  text-align: center;
  margin-bottom: 1.75rem;
}

.login-brand h1 {
  margin: 0;
  font-size: 1.75rem;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.login-brand p {
  margin: 0.45rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.login-card {
  background: var(--surface-1);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.5rem 1.4rem;
  box-shadow: var(--shadow-md);
}

.login-card__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 1.15rem;
}

.login-card h2 {
  margin: 0;
  font-size: 1.05rem;
  font-weight: 600;
}

.login-theme-btn {
  width: 34px;
  height: 34px;
  padding: 0;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  color: var(--text-secondary);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background var(--duration-fast) var(--ease-out),
    border-color var(--duration-fast) var(--ease-out);
}

.login-theme-btn:hover {
  background: var(--surface-3);
  border-color: var(--border-strong);
}

.login-theme-btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.theme-icon {
  width: 16px;
  height: 16px;
}

[data-theme="light"] .theme-icon--moon,
[data-theme="dark"] .theme-icon--sun {
  display: none;
}

label {
  display: block;
  margin-top: 0.85rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--muted);
}

label:first-of-type { margin-top: 0; }

input {
  width: 100%;
  margin-top: 0.35rem;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--canvas);
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color var(--duration-fast) var(--ease-out),
    box-shadow var(--duration-fast) var(--ease-out);
}

input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: var(--focus-ring);
}

button[type="submit"] {
  width: 100%;
  margin-top: 1.35rem;
  padding: 0.65rem 1rem;
  border: none;
  border-radius: var(--radius-sm);
  background: var(--accent);
  color: var(--accent-fg);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  font-family: inherit;
  transition: background var(--duration-fast) var(--ease-out),
    transform var(--duration-fast) var(--ease-out);
}

button[type="submit"]:hover { background: var(--accent-hover); }
button[type="submit"]:active { transform: scale(0.98); }
button[type="submit"]:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.alert-error {
  margin: 0 0 1rem;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  background: var(--danger-bg);
  border: 1px solid rgba(159, 47, 45, 0.2);
  color: var(--danger);
  font-size: 0.88rem;
}

.alert-warn {
  margin: 0 0 1rem;
  padding: 0.65rem 0.85rem;
  border-radius: var(--radius-sm);
  background: var(--warn-bg);
  border: 1px solid rgba(149, 100, 0, 0.2);
  color: var(--warn);
  font-size: 0.88rem;
}

.login-hint {
  margin: 1.1rem 0 0;
  font-size: 0.78rem;
  color: var(--muted);
  text-align: center;
  line-height: 1.5;
}

.login-hint code {
  font-size: 0.85em;
  color: var(--text-secondary);
  background: var(--surface-2);
  padding: 0.1rem 0.35rem;
  border-radius: 4px;
  font-family: var(--font-mono);
}