/* 密码输入框容器样式 */
    .password-input-container {
      position: relative;
    }
    .password-toggle {
      position: absolute;
      right: 12px;
      top: 50%;
      transform: translateY(-50%);
      cursor: pointer;
      color: #94a3b8;
      transition: color 0.2s ease;
    }
    .password-toggle:hover {
      color: #3b82f6;
    }
    /* 错误提示样式 */
    .error-message {
      color: #ef4444;
      font-size: 0.875rem;
      margin-top: 0.5rem;
      display: none;
    }
    .error-message.show {
      display: block;
    }
    /* 错误状态输入框样式 */
    input.error {
      border-color: #ef4444 !important;
    }
    /* 按钮加载状态 */
    .btn-loading {
      pointer-events: none;
      opacity: 0.8;
    }
    .btn-loading::after {
      content: '';
      display: inline-block;
      width: 16px;
      height: 16px;
      border: 2px solid #ffffff;
      border-radius: 50%;
      border-top-color: transparent;
      animation: spin 1s linear infinite;
      margin-left: 8px;
      vertical-align: middle;
    }
    @keyframes spin {
      0% { transform: rotate(0deg); }
      100% { transform: rotate(360deg); }
    }
    /* 成功弹窗样式 */
    .modal-overlay {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: rgba(0, 0, 0, 0.7);
      backdrop-filter: blur(4px);
      display: flex;
      align-items: center;
      justify-content: center;
      z-index: 9999;
      opacity: 0;
      visibility: hidden;
      transition: all 0.3s ease;
    }
    .modal-overlay.show {
      opacity: 1;
      visibility: visible;
    }
    .modal-content {
      background: linear-gradient(145deg, #1e293b, #0f172a);
      border: 1px solid rgba(255, 255, 255, 0.1);
      border-radius: 16px;
      padding: 2rem;
      width: 90%;
      max-width: 420px;
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
      transform: translateY(20px);
      transition: all 0.3s ease;
    }
    .modal-overlay.show .modal-content {
      transform: translateY(0);
    }