/* ============================================================
 * Auth Gate — 密码门样式
 * ============================================================ */

#auth-gate {
  position: fixed;
  inset: 0;
  z-index: var(--z-modal, 1000);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg,
    rgba(45, 80, 22, 0.92) 0%,
    rgba(107, 142, 127, 0.92) 50%,
    rgba(135, 206, 235, 0.85) 100%);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

#auth-gate[aria-hidden="true"] {
  display: none;
}

.auth-card {
  width: 100%;
  max-width: 380px;
  margin: var(--space-4, 16px);
  padding: var(--space-6, 32px) var(--space-5, 24px);
  background: var(--color-bg-card, #fff);
  border-radius: var(--radius-lg, 16px);
  box-shadow: var(--shadow-xl, 0 16px 48px rgba(0,0,0,0.16));
  text-align: center;
}

.auth-card__icon {
  font-size: 48px;
  margin-bottom: var(--space-3, 12px);
  display: block;
}

.auth-card__title {
  margin: 0 0 var(--space-2, 8px);
  font-size: var(--fs-lg, 22px);
  font-weight: 600;
  color: var(--color-text, #2C3E2D);
}

.auth-card__desc {
  margin: 0 0 var(--space-5, 24px);
  font-size: var(--fs-sm, 14px);
  color: var(--color-text-muted, #6B7B6C);
}

#auth-form {
  display: flex;
  flex-direction: column;
  gap: var(--space-3, 12px);
}

#auth-input {
  width: 100%;
  padding: var(--space-3, 12px) var(--space-4, 16px);
  font-size: var(--fs-base, 16px);
  font-family: inherit;
  color: var(--color-text, #2C3E2D);
  background: var(--color-bg-soft, #F0EDE3);
  border: 1.5px solid var(--color-border, #E5E5E0);
  border-radius: var(--radius-md, 8px);
  transition: border-color var(--duration-fast, 150ms) var(--ease, ease);
  outline: none;
  box-sizing: border-box;
}

#auth-input:focus {
  border-color: var(--color-primary-light, #5A8F3D);
  background: var(--color-bg-card, #fff);
}

#auth-input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

#auth-submit {
  width: 100%;
  padding: var(--space-3, 12px) var(--space-4, 16px);
  font-size: var(--fs-base, 16px);
  font-weight: 600;
  font-family: inherit;
  color: #fff;
  background: var(--color-primary, #2D5016);
  border: none;
  border-radius: var(--radius-md, 8px);
  cursor: pointer;
  transition: background var(--duration-fast, 150ms) var(--ease, ease);
}

#auth-submit:hover:not(:disabled) {
  background: var(--color-primary-light, #5A8F3D);
}

#auth-submit:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

#auth-error {
  margin: 0;
  padding: var(--space-2, 8px) var(--space-3, 12px);
  font-size: var(--fs-sm, 14px);
  color: var(--color-danger, #C0392B);
  background: rgba(192, 57, 43, 0.08);
  border-radius: var(--radius-sm, 4px);
  display: none;
}

#auth-error:not(:empty) {
  display: block;
}

.auth-card__hint {
  margin-top: var(--space-5, 24px);
  padding-top: var(--space-4, 16px);
  border-top: 1px solid var(--color-border, #E5E5E0);
  font-size: var(--fs-xs, 12px);
  color: var(--color-text-light, #9CA89E);
}

/* ---------- Mobile ---------- */
@media (max-width: 480px) {
  .auth-card {
    margin: var(--space-3, 12px);
    padding: var(--space-5, 24px) var(--space-4, 16px);
  }

  .auth-card__icon {
    font-size: 40px;
  }
}