/* ==========================================================================
   Sign-in surface. Tokens, brand, and button primitives come from tokens.css.
   ========================================================================== */

.auth-body {
  position: relative;
  display: grid;
  place-items: center;
  min-height: 100dvh;
  padding: 28px 20px;
  background-color: var(--bg-base);
  color: var(--ink-primary);
  font-family: var(--font-sans);
}

.auth-topbar-actions {
  position: absolute;
  top: 20px;
  right: 24px;
}

.auth-shell {
  width: min(460px, 100%);
}

.auth-card {
  padding: 38px 36px 32px;
  border: 1px solid var(--line-base);
  border-radius: var(--r-xl);
  background: var(--bg-surface);
  box-shadow: var(--shadow-lg);
  position: relative;
  overflow: hidden;
}

.auth-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--brand-primary), var(--gold-primary));
}

.auth-brand {
  margin-bottom: 24px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
}

.auth-title {
  margin: 0 0 10px;
  font-family: var(--font-serif);
  font-size: 2.125rem;
  font-weight: 500;
  line-height: 1.1;
  letter-spacing: -0.025em;
  color: var(--ink-primary);
}

.auth-lede {
  margin: 0 0 24px;
  font-size: 0.9375rem;
  line-height: 1.6;
  color: var(--ink-secondary);
}

.auth-alert {
  margin-bottom: 18px;
  padding: 12px 14px;
  border: 1px solid var(--status-danger);
  border-radius: var(--r-md);
  background: var(--status-danger-bg);
  font-size: 0.8438rem;
  line-height: 1.5;
  color: var(--status-danger);
}

/* Google's brand guidance: a neutral surface, its own mark, unmodified. */
.google-button {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
  width: 100%;
  padding: 13px 16px;
  border: 1px solid var(--line-strong);
  border-radius: var(--r-md);
  background: var(--bg-surface);
  box-shadow: var(--shadow-sm);
  color: var(--ink-primary);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition-fast);
}

.google-button:hover {
  background: var(--bg-subtle);
  border-color: var(--ink-muted);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.google-button:active {
  transform: translateY(1px);
}

.google-button.is-disabled {
  opacity: 0.5;
  pointer-events: none;
}

.google-mark {
  width: 18px;
  height: 18px;
  flex: none;
}

.auth-note {
  margin: 12px 0 0;
  font-size: 0.8125rem;
  color: var(--ink-muted);
  text-align: center;
}

.auth-points {
  display: grid;
  gap: 10px;
  margin: 26px 0 0;
  padding: 22px 0 0;
  border-top: 1px dashed var(--line-dashed);
  list-style: none;
}

.auth-points li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--ink-secondary);
}

.auth-tick {
  position: relative;
  width: 18px;
  height: 18px;
  flex: none;
  margin-top: 2px;
  border-radius: 50%;
  background: var(--brand-light);
}

.auth-tick::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand-primary);
}

.auth-fineprint {
  margin: 20px 0 0;
  font-size: 0.75rem;
  line-height: 1.55;
  color: var(--ink-muted);
}

@media (max-width: 640px) {
  .auth-card {
    padding: 28px 22px 24px;
    border-radius: var(--r-lg);
  }
  .auth-title { font-size: 1.75rem; }
}