/* 登录 / 注册页（与 notes 主题变量一致） */

body.portal-auth {
  min-height: 100vh;
}

.portal-auth-shell {
  position: relative;
  z-index: 1;
  min-height: 100vh;
}

.portal-auth-page {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem 1rem;
}

.portal-auth-card {
  width: min(100%, 400px);
  padding: 2rem 1.75rem;
  background: var(--ink-surface-solid);
  border: 1px solid var(--ink-border);
  border-radius: var(--ink-radius);
  box-shadow: var(--ink-shadow);
  animation: portal-fade-up 0.5s ease-out;
}

.portal-auth-card--register {
  width: min(100%, 440px);
}

@keyframes portal-fade-up {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.portal-auth-brand {
  margin-bottom: 1.25rem;
}

.portal-auth-card h1 {
  margin: 0 0 1.5rem;
  font-family: var(--ink-serif);
  font-size: 1.65rem;
}

.portal-auth-hint {
  color: var(--ink-muted);
  margin: 0 0 1.5rem;
  font-size: 0.92rem;
  line-height: 1.55;
}

.portal-auth-form .portal-form-group {
  margin-bottom: 1rem;
}

.portal-auth-form label {
  display: block;
  margin-bottom: 0.35rem;
  font-size: 0.9rem;
  font-weight: 500;
}

.portal-input {
  width: 100%;
  padding: 0.7rem 0.85rem;
  border: 1px solid var(--ink-border);
  border-radius: 10px;
  font: inherit;
  background: var(--ink-surface);
  color: var(--ink-text);
  transition: border-color var(--ink-transition), box-shadow var(--ink-transition);
}

.portal-input:focus {
  outline: none;
  border-color: var(--ink-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--ink-accent) 25%, transparent);
}

.portal-field-error {
  display: block;
  color: #ef4444;
  font-size: 0.85rem;
  margin-top: 0.25rem;
}

.portal-field-help {
  display: block;
  color: var(--ink-muted);
  font-size: 0.8rem;
  margin-top: 0.25rem;
}

.portal-field-help.portal-field-error {
  color: #ef4444;
}

.portal-form-errors {
  background: color-mix(in srgb, #ef4444 12%, var(--ink-surface));
  color: #b91c1c;
  padding: 0.75rem 1rem;
  border-radius: 10px;
  margin: 0 0 1rem;
  list-style: none;
}

.portal-auth-footer {
  margin-top: 1.5rem;
  text-align: center;
  color: var(--ink-muted);
  font-size: 0.9rem;
  line-height: 1.6;
}

.portal-auth-footer a {
  color: var(--ink-accent);
}

.portal-btn-block {
  width: 100%;
  margin-top: 0.25rem;
}

.portal-code-row {
  display: flex;
  gap: 0.5rem;
  align-items: stretch;
}

.portal-code-row .portal-input {
  flex: 1;
  min-width: 0;
}

.portal-btn-secondary {
  flex-shrink: 0;
  white-space: nowrap;
  padding: 0.55rem 0.85rem;
  font-size: 0.88rem;
  border-radius: 10px;
  border: 1px solid var(--ink-border);
  background: var(--ink-surface);
  color: var(--ink-text);
  cursor: pointer;
  font: inherit;
  transition: border-color var(--ink-transition), background var(--ink-transition);
}

.portal-btn-secondary:hover:not(:disabled) {
  border-color: var(--ink-accent);
  background: var(--ink-surface-solid);
}

.portal-btn-secondary:disabled {
  opacity: 0.65;
  cursor: not-allowed;
}