/* Toast: see ENHANCED TOAST section below */


    .error-box {
      margin-top: 18px;
      padding: 16px;
      border-radius: var(--radius-md);
      background: var(--red-light);
      border: 2px solid var(--red);
      color: var(--red-dark);
      font-size: 14px;
      font-weight: 700;
    }


    /* ==========================================
       MODAL
    ========================================== */
    .modal-backdrop {
      position: fixed;
      inset: 0;
      z-index: 1000;
      background: rgba(0, 0, 0, 0.6);
      backdrop-filter: blur(8px);
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 24px;
      animation: modalFadeIn 0.25s ease;
    }

    @keyframes modalFadeIn {
      from {
        opacity: 0;
      }

      to {
        opacity: 1;
      }
    }

    .modal-content {
      background: var(--card-bg);
      border: 2px solid var(--card-border);
      border-radius: var(--radius-xl);
      box-shadow: var(--shadow-lg);
      max-width: min(640px, calc(100vw - 24px));
      box-sizing: border-box;
      width: 100%;
      max-height: 85vh;
      overflow-y: auto;
      padding: 36px;
      animation: modalSlideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1);
    }

    @keyframes modalSlideIn {
      from {
        opacity: 0;
        transform: translateY(20px) scale(0.97);
      }

      to {
        opacity: 1;
        transform: translateY(0) scale(1);
      }
    }

    .modal-close {
      float: right;
      background: none;
      border: none;
      color: var(--muted);
      font-size: 24px;
      cursor: pointer;
      padding: 4px;
      transition: color 0.2s;
    }

    .modal-close:hover {
      color: var(--ink);
    }

    /* Quiz Question Modal Enhancements */
    .qq-option-row {
      display: flex;
      align-items: center;
      gap: 10px;
      padding: 6px 12px;
      background: var(--card-bg-subtle);
      border: 1.5px solid var(--card-border);
      border-radius: var(--radius-md);
      transition: all 0.2s ease;
    }

    .qq-option-row:focus-within {
      border-color: var(--brand-cyan);
      box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
    }

    .qq-option-row.is-correct {
      border-color: var(--green);
      background: rgba(16, 185, 129, 0.08);
    }

    .qq-badge {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      width: 32px;
      height: 32px;
      border-radius: var(--radius-sm);
      font-weight: 800;
      font-size: 13.5px;
      flex-shrink: 0;
      user-select: none;
    }

    .qq-badge-a {
      background: var(--option-a-bg);
      border: 1px solid var(--option-a-border);
      color: var(--option-a-text);
    }

    .qq-badge-b {
      background: var(--option-b-bg);
      border: 1px solid var(--option-b-border);
      color: var(--option-b-text);
    }

    .qq-badge-c {
      background: var(--option-c-bg);
      border: 1px solid var(--option-c-border);
      color: var(--option-c-text);
    }

    .qq-badge-d {
      background: var(--option-d-bg);
      border: 1px solid var(--option-d-border);
      color: var(--option-d-text);
    }

    .qq-correct-tag {
      font-size: 11.5px;
      font-weight: 800;
      padding: 3px 8px;
      border-radius: var(--radius-full);
      background: rgba(16, 185, 129, 0.18);
      color: var(--green-dark);
      border: 1px solid var(--green);
      display: none;
      white-space: nowrap;
      flex-shrink: 0;
    }

    .qq-option-row.is-correct .qq-correct-tag {
      display: inline-flex;
      align-items: center;
      gap: 4px;
    }

    /* Quiz Builder Media Blocks (Image, Code, Preview) */
    .qq-media-block {
      border: 1.5px dashed var(--card-border);
      border-radius: var(--radius-md);
      padding: 12px 14px;
      background: var(--card-bg-subtle, rgba(255, 255, 255, 0.02));
      display: flex;
      flex-direction: column;
      gap: 10px;
      transition: border-color 0.2s ease, background 0.2s ease;
    }

    .qq-media-block:hover {
      border-color: var(--brand-indigo);
    }

    .qq-media-header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      gap: 8px;
    }

    .qq-media-title {
      font-size: 12.5px;
      font-weight: 700;
      color: var(--ink);
      display: flex;
      align-items: center;
      gap: 6px;
    }

    .qq-media-action-btn {
      padding: 4px 12px;
      font-size: 12px;
      font-weight: 700;
      border-radius: var(--radius-full);
      flex-shrink: 0;
    }

    .qq-image-preview-wrap {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .qq-image-preview-wrap.hidden {
      display: none !important;
    }

    .qq-image-preview-card {
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 12px;
      padding: 10px 12px;
      border-radius: var(--radius-sm);
      background: var(--card-bg);
      border: 1px solid var(--card-border);
    }

    .qq-image-preview-img {
      max-width: 140px;
      max-height: 90px;
      object-fit: contain;
      border-radius: 6px;
      border: 1px solid var(--card-border);
      background: rgba(0, 0, 0, 0.04);
    }

    .qq-image-preview-actions {
      display: flex;
      align-items: center;
      gap: 10px;
      flex-wrap: wrap;
    }

    .qq-upload-status {
      font-size: 12px;
      font-weight: 600;
      color: var(--brand-cyan);
      display: inline-flex;
      align-items: center;
      gap: 5px;
    }

    .qq-upload-status.hidden {
      display: none !important;
    }

    .qq-code-input-wrap {
      display: flex;
      flex-direction: column;
      gap: 8px;
    }

    .qq-code-input-wrap.hidden {
      display: none !important;
    }

    .qq-code-textarea {
      font-family: 'JetBrains Mono', Consolas, monospace;
      font-size: 13px;
      line-height: 1.6;
      resize: vertical;
      background: #0b132b;
      color: #f1f5f9;
      border: 1.5px solid #1e293b;
      tab-size: 2;
    }

    .qq-code-textarea:focus {
      border-color: var(--brand-indigo);
      box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.2);
    }

    .qq-code-preview-bar {
      display: flex;
      justify-content: space-between;
      align-items: center;
      margin-top: 4px;
    }

    @media (max-width: 640px) {
      .modal-backdrop {
        padding: 10px;
      }

      .modal-content {
        padding: 20px 16px;
        max-height: 92vh;
        border-radius: var(--radius-lg);
      }
    }

    /* ==========================================
       ENHANCED TOAST
    ========================================== */
    .toast {
      position: fixed;
      right: 24px;
      bottom: 24px;
      z-index: 500;
      max-width: 380px;
      padding: 14px 20px;
      border-radius: var(--radius-md);
      background: rgba(15, 23, 42, 0.95);
      backdrop-filter: blur(12px);
      color: #ffffff;
      border: 2px solid var(--brand-indigo);
      box-shadow: var(--shadow-lg);
      font-size: 14px;
      font-weight: 800;
      display: inline-flex;
      align-items: center;
      gap: 10px;
      animation: toastSlideIn 0.3s cubic-bezier(0.16, 1, 0.3, 1),
        toastFadeOut 0.3s ease 2.3s forwards;
    }

    .toast svg,
    .toast .toast-icon {
      width: 20px;
      height: 20px;
      flex-shrink: 0;
      display: inline-block;
    }

    @keyframes toastSlideIn {
      from {
        opacity: 0;
        transform: translateY(20px) translateX(20px);
      }

      to {
        opacity: 1;
        transform: translateY(0) translateX(0);
      }
    }

    @keyframes toastFadeOut {
      from {
        opacity: 1;
        transform: translateY(0);
      }

      to {
        opacity: 0;
        transform: translateY(10px);
      }
    }

    .toast.success {
      border-color: var(--green);
    }

    .toast.error {
      border-color: var(--red);
    }

/* Phase 41: Mobile Modal Adaptation */
@media (max-width: 768px) {
  .modal-backdrop {
    padding: 12px;
    align-items: center;
  }

  .modal-content {
    max-width: calc(100vw - 24px) !important;
    width: 100% !important;
    padding: 20px 16px !important;
    max-height: 90vh;
    max-height: 90dvh;
    border-radius: var(--radius-lg, 16px);
    box-sizing: border-box;
  }

  .modal-content [style*="grid-template-columns"] {
    grid-template-columns: 1fr !important;
  }

  .modal-content .field {
    margin: 12px 0;
  }

  .modal-content .form-input,
  .modal-content .input-field {
    padding: 10px 12px;
    font-size: 14px;
    max-width: 100%;
    box-sizing: border-box;
  }
}