.login-page {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  padding: 1.5rem;
  background:
    radial-gradient(circle at 12% 15%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 55%),
    radial-gradient(circle at 88% 20%, color-mix(in srgb, #7fd6ff 30%, transparent), transparent 50%),
    radial-gradient(circle at 50% 100%, color-mix(in srgb, var(--good) 14%, transparent), transparent 55%),
    linear-gradient(160deg, color-mix(in srgb, #dbeeff 65%, var(--bg)) 0%, var(--bg) 55%, color-mix(in srgb, #e3f8f1 55%, var(--bg)) 100%);
}

[data-theme="dark"] .login-page {
  background:
    radial-gradient(circle at 12% 15%, color-mix(in srgb, var(--accent) 30%, transparent), transparent 55%),
    radial-gradient(circle at 88% 20%, color-mix(in srgb, #7fd6ff 18%, transparent), transparent 50%),
    radial-gradient(circle at 50% 100%, color-mix(in srgb, var(--good) 16%, transparent), transparent 55%),
    var(--bg);
}

.login-card {
  width: 100%;
  max-width: 360px;
  padding: 2.25rem 2rem;
  background: color-mix(in srgb, var(--surface) 55%, transparent);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  box-shadow:
    0 0 0 1px color-mix(in srgb, var(--accent) 18%, transparent),
    0 0 32px color-mix(in srgb, var(--accent) 16%, transparent),
    inset 0 1px 0 color-mix(in srgb, #fff 30%, transparent),
    var(--shadow-md);
}

.login-card__brand {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  margin: 0 auto 1.75rem;
}

.login-card__logo {
  height: 48px;
  width: auto;
  display: block;
}

.login-card__tagline {
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  background: linear-gradient(
    100deg,
    #ff5f6d, #ffc371, #4fd68c, #4facfe, #a06bff, #ff5f6d
  );
  background-size: 300% auto;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  filter: saturate(1.15) drop-shadow(0 0 6px color-mix(in srgb, var(--accent) 25%, transparent));
  animation: tagline-shimmer 6s linear infinite;
}

.login-card h1 {
  font-size: 1.125rem;
  margin: 0 0 1.25rem;
}

.field {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  margin-bottom: 1rem;
}

.field label {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.field input {
  padding: 0.6rem 0.7rem;
  border: 1px solid color-mix(in srgb, var(--text) 12%, transparent);
  border-radius: 8px;
  background: color-mix(in srgb, var(--surface) 60%, transparent);
  color: var(--text);
  font-size: 0.9rem;
  transition: border-color 0.15s ease, background 0.15s ease;
}

.field input:focus {
  outline: none;
  border-color: var(--accent);
  background: var(--surface);
}

/* Scoped to .login-page. This sheet is loaded on every page (see
   partials/_css.html), so an unscoped `.btn { width: 100% }` here reached every
   .btn in the app -- which is what stretched the inline comment composer's
   Post button across its whole row. The auth pages want a full-width CTA; no
   other page does. Keep these selectors scoped. */
.login-page .btn {
  width: 100%;
  padding: 0.65rem;
  border: 1px solid transparent;
  background: var(--accent);
  color: #fff;
  font-size: 0.9rem;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 4px 14px color-mix(in srgb, var(--accent) 35%, transparent);
  transition: transform 0.12s ease, box-shadow 0.12s ease;
}

.login-page .btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 6px 18px color-mix(in srgb, var(--accent) 42%, transparent);
}

.login-page .btn--secondary {
  display: block;
  width: 100%;
  margin-top: 0.75rem;
  padding: 0.65rem;
  border: 1px solid color-mix(in srgb, var(--text) 14%, transparent);
  background: color-mix(in srgb, var(--surface) 50%, transparent);
  color: var(--text);
  font-size: 0.9rem;
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease, color 0.15s ease;
}

.btn--secondary:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

.error-banner {
  background: #fdeceb;
  color: #b3261e;
  border: 1px solid #f6c6c2;
  border-radius: 6px;
  padding: 0.5rem 0.75rem;
  font-size: 0.85rem;
  margin-bottom: 1rem;
}

[data-theme="dark"] .error-banner {
  background: #3a1f1e;
  color: #ff9d97;
  border-color: #5c2b28;
}

/* Registration username field: the hint and its live availability check. */
.field__hint {
  margin: 0.3rem 0 0;
  color: var(--text-muted);
  font-size: 0.72rem;
}

/* Reserves a line so the form does not jump as the message appears. */
.username-status {
  min-height: 1.1rem;
  margin-top: 0.25rem;
}

.username-status__msg {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.72rem;
}

.username-status__msg--ok {
  color: var(--good);
}

.username-status__msg--bad {
  color: var(--bad);
}