/* ============================================================
   login.css — 登录页样式
   - 复用 base.css 的变量 + components.css 的 .btn / .glass
   - BEM:.login-page / .login-card / .login-form / .login-field / .login-hint
   ============================================================ */

.login-page {
  /* 占满 header 下方剩余高度,卡片垂直水平居中 */
  min-height: calc(100vh - 56px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 16px;
}

.login-card {
  width: 100%;
  max-width: 400px;
  padding: 36px 32px 28px;
  border-radius: var(--radius-lg, 12px);
  background: var(--card-bg, rgba(20, 22, 28, 0.78));
  border: 1px solid var(--card-border, rgba(255, 255, 255, 0.08));
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.32);
}

.login-card__head {
  text-align: center;
  margin-bottom: 28px;
}

.login-card__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  margin: 0 auto 16px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(124, 92, 255, 0.18), rgba(78, 160, 255, 0.18));
  color: var(--brand-1, #7c5cff);
}

.login-card__title {
  font-size: 24px;
  font-weight: 600;
  margin: 0 0 8px;
  letter-spacing: 0.5px;
}

.login-card__subtitle {
  font-size: 14px;
  color: var(--text-muted, #8b95a7);
  margin: 0;
}

/* 表单 */
.login-form {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.login-field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.login-field__label {
  font-size: 13px;
  font-weight: 500;
  color: var(--text-secondary, #b9c1cf);
}

.login-field__input {
  width: 100%;
  padding: 10px 14px;
  font-size: 14px;
  color: var(--text-primary, #e8ecf3);
  background: var(--input-bg, rgba(255, 255, 255, 0.04));
  border: 1px solid var(--input-border, rgba(255, 255, 255, 0.12));
  border-radius: var(--radius-md, 8px);
  outline: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
  box-sizing: border-box;
}

.login-field__input::placeholder {
  color: var(--text-faint, #5e6878);
}

.login-field__input:hover {
  border-color: rgba(255, 255, 255, 0.18);
}

.login-field__input:focus {
  border-color: var(--brand-1, #7c5cff);
  box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.18);
}

/* 错误提示 */
.login-error {
  padding: 10px 14px;
  font-size: 13px;
  color: #ff6b6b;
  background: rgba(255, 107, 107, 0.08);
  border: 1px solid rgba(255, 107, 107, 0.28);
  border-radius: var(--radius-md, 8px);
  animation: login-shake 0.4s ease;
}

@keyframes login-shake {
  0%, 100% { transform: translateX(0); }
  20% { transform: translateX(-6px); }
  40% { transform: translateX(6px); }
  60% { transform: translateX(-4px); }
  80% { transform: translateX(4px); }
}

/* 提交按钮 */
.login-submit {
  margin-top: 8px;
  padding: 12px;
  font-size: 15px;
  font-weight: 500;
  letter-spacing: 1px;
  cursor: pointer;
  border: none;
  border-radius: var(--radius-md, 8px);
  background: linear-gradient(135deg, var(--brand-1, #7c5cff), var(--brand-2, #4ea0ff));
  color: #fff;
  transition: opacity 0.15s ease, transform 0.1s ease;
}

.login-submit:hover:not(:disabled) {
  opacity: 0.92;
}

.login-submit:active:not(:disabled) {
  transform: translateY(1px);
}

.login-submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* 底部友好提示 */
.login-hint {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px dashed rgba(255, 255, 255, 0.08);
  font-size: 12px;
  color: var(--text-faint, #5e6878);
}

.login-hint strong {
  color: var(--text-secondary, #b9c1cf);
  font-weight: 600;
}

/* 亮色主题适配 */
[data-theme="light"] .login-card {
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(0, 0, 0, 0.08);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.08);
}

[data-theme="light"] .login-field__input {
  background: rgba(0, 0, 0, 0.03);
  border-color: rgba(0, 0, 0, 0.14);
  color: #1a1f2a;
}

[data-theme="light"] .login-field__input:focus {
  border-color: var(--brand-1, #7c5cff);
  box-shadow: 0 0 0 3px rgba(124, 92, 255, 0.15);
}

[data-theme="light"] .login-hint {
  border-top-color: rgba(0, 0, 0, 0.08);
}

/* 响应式 */
@media (max-width: 480px) {
  .login-card {
    padding: 28px 22px 22px;
  }
  .login-card__title {
    font-size: 20px;
  }
}