.btn-primary:hover {
        background: #1a252f;
      }

      .btn-secondary {
        background: #95a5a6;
        color: white;
      }

      .btn-secondary:hover {
        background: #7f8c8d;
      }

      .btn-danger {
        background: #e74c3c;
        color: white;
      }

      .btn-danger:hover {
        background: #c0392b;
      }

      .response-box {
        background: #f9f9f9;
        border: 1px solid #ddd;
        border-radius: 4px;
        padding: 15px;
        margin-top: 20px;
        max-height: 300px;
        overflow-y: auto;
        font-family: "Courier New", monospace;
        font-size: 12px;
        white-space: pre-wrap;
        word-break: break-all;
      }

      .response-box.success {
        background: #d4edda;
        border-color: #c3e6cb;
        color: #155724;
      }

      .response-box.error {
        background: #f8d7da;
        border-color: #f5c6cb;
        color: #721c24;
      }

      .mode-toggle {
        display: flex;
        gap: 10px;
        margin-bottom: 20px;
      }

      .mode-toggle button {
        flex: 1;
        padding: 10px;
      }

      .mode-toggle button.active {
        background: #2c3e50;
        color: white;
      }

      .mode-toggle button:not(.active) {
        background: #ecf0f1;
        color: #333;
      }

      .hints-list {
        display: flex;
        flex-direction: column;
        gap: 10px;
        margin-bottom: 20px;
      }

      .hint-item {
        display: flex;
        gap: 10px;
        align-items: center;
        background: #f8f9fa;
        padding: 12px;
        border-radius: 6px;
        border: 1px solid #e9ecef;
        transition: all 0.3s;
      }

      .hint-item:hover {
        background: #f0f1f3;
        border-color: #dee2e6;
      }

      .hint-item input {
        flex: 1;
        background: white;
        border: 1px solid #dee2e6;
        padding: 8px 12px;
        border-radius: 4px;
      }

      .hint-item .hint-controls {
        display: flex;
        gap: 5px;
      }

      .hint-item button {
        padding: 8px 12px;
        font-size: 12px;
      }

      .hint-item .toggle-active {
        padding: 8px 12px;
        background: #3498db;
        color: white;
        font-size: 12px;
      }

      .hint-item .toggle-active.inactive {
        background: #95a5a6;
      }

      .hint-item .btn-delete {
        padding: 8px 12px;
        background: #e74c3c;
        color: white;
        font-size: 12px;
      }

      .hint-item .btn-delete:hover {
        background: #c0392b;
      }

      .add-hint-btn {
        width: 100%;
        margin-top: 10px;
      }

      .csv-upload-section {
        background: #ecf0f1;
        padding: 15px;
        border-radius: 6px;
        margin-bottom: 20px;
        border: 2px dashed #bdc3c7;
      }

      .csv-upload-section h4 {
        margin-bottom: 10px;
        color: #2c3e50;
        font-size: 14px;
      }

      .csv-upload-section p {
        font-size: 12px;
        color: #7f8c8d;
        margin-bottom: 10px;
      }

      .csv-upload-section input[type="file"] {
        margin-bottom: 10px;
      }

      .csv-upload-section button {
        width: 100%;
      }

      .file-info {
        background: #ecf0f1;
        padding: 10px;
        border-radius: 4px;
        margin-top: 10px;
        font-size: 12px;
      }

      /* Loading states */
      .loading {
        position: relative;
        pointer-events: none;
        opacity: 0.7;
      }

      .loading::after {
        content: "";
        position: absolute;
        top: 50%;
        left: 50%;
        width: 16px;
        height: 16px;
        margin: -8px 0 0 -8px;
        border: 2px solid transparent;
        border-top: 2px solid #fff;
        border-radius: 50%;
        animation: spin 1s linear infinite;
      }

      @keyframes spin {
        0% {
          transform: rotate(0deg);
        }

        100% {
          transform: rotate(360deg);
        }
      }

      .loading-text {
        opacity: 0;
      }

      .tab-content h2 {
        color: #2c3e50;
        margin-bottom: 4px;
      }

      .tab-subtitle {
        color: #7f8c8d;
        font-size: 14px;
        margin-bottom: 24px;
      }

      .login-help-sections {
        margin-top: 28px;
      }

      .login-help-sections .section-card + .section-card {
        margin-top: 16px;
      }

      .login-help-sections .help-text {
        font-size: 13px;
        color: #7f8c8d;
        margin-bottom: 16px;
        line-height: 1.5;
      }

      .login-help-sections .help-steps {
        font-size: 13px;
        color: #7f8c8d;
        margin: 0 0 16px 1.2em;
        padding: 0;
        line-height: 1.6;
      }

      .login-help-sections .btn-secondary {
        margin-top: 4px;
      }

      .login-help-sections .inline-actions {
        display: flex;
        gap: 10px;
        flex-wrap: wrap;
        align-items: center;
      }

      .section-card {
        background: #fafafa;
        border: 1px solid #e9ecef;
        border-radius: 8px;
        padding: 20px;
        margin-bottom: 24px;
      }

      .section-card h3 {
        font-size: 15px;
        color: #2c3e50;
        margin-bottom: 16px;
      }