/* ==========================================================================
   MATELORA - Panel de Administración / CMS Styles
   ========================================================================== */

.admin-header {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
  height: var(--header-height);
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  z-index: var(--z-header);
  box-shadow: 0 1px 4px 0 rgba(0, 0, 0, 0.05);
}

.admin-header-inner {
  max-width: 1500px;
  height: 100%;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.admin-brand-group {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.admin-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background-color: #0f172a;
  color: #f8fafc;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.admin-header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* --------------------------------------------------------------------------
   Layout General del Panel
   -------------------------------------------------------------------------- */
.admin-main {
  max-width: 1500px;
  margin: 0 auto;
  padding: 1.5rem 1.5rem 4rem;
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.admin-section-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.6rem;
  margin-bottom: 1rem;
}

.admin-section-subtitle {
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-top: -0.5rem;
  margin-bottom: 1.25rem;
}

/* --------------------------------------------------------------------------
   Split-Screen Editor (Formulario + Previsualización)
   -------------------------------------------------------------------------- */
.editor-split-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.75rem;
  align-items: start;
}

.editor-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem;
}

.editor-mode-indicator {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1rem;
  margin-bottom: 1.25rem;
  border-bottom: 1px solid var(--border-subtle);
}

.mode-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  background-color: #e0e7ff;
  color: #3730a3;
}

.mode-badge.is-editing {
  background-color: #fef3c7;
  color: #92400e;
}

/* Form Styles */
.form-grid-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 0.65rem 0.85rem;
  font-size: 0.9rem;
  font-family: inherit;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  background-color: var(--bg-surface-secondary);
  color: var(--text-primary);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  outline: none;
  background-color: var(--bg-surface);
  border-color: var(--primary-500);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.15);
}

.form-textarea {
  min-height: 110px;
  resize: vertical;
  font-family: 'JetBrains Mono', 'Fira Code', 'Courier New', monospace;
  font-size: 0.85rem;
  line-height: 1.5;
}

.form-switch-label {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
  cursor: pointer;
  padding: 0.5rem 0;
}

.form-switch-label input[type="checkbox"] {
  width: 18px;
  height: 18px;
  accent-color: var(--primary-600);
  cursor: pointer;
}

/* Math Toolbar Chips */
.math-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  margin-bottom: 0.4rem;
  padding: 0.35rem;
  background-color: var(--bg-app);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
}

.math-chip-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  padding: 0.2rem 0.45rem;
  font-size: 0.75rem;
  font-family: 'Courier New', monospace;
  color: var(--primary-700);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.math-chip-btn:hover {
  background: var(--primary-50);
  border-color: var(--primary-400);
  transform: translateY(-1px);
}

/* Live Preview Side */
.preview-container {
  position: sticky;
  top: calc(var(--header-height) + 1.5rem);
}

.preview-status-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
  padding: 0.5rem 0.85rem;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  border-radius: var(--radius-md);
  color: #166534;
  font-size: 0.8rem;
  font-weight: 600;
}

.preview-pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #22c55e;
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.3);
  animation: pulseDot 2s infinite;
}

@keyframes pulseDot {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.5); }
  70% { transform: scale(1); box-shadow: 0 0 0 6px rgba(34, 197, 94, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(34, 197, 94, 0); }
}

/* --------------------------------------------------------------------------
   Tabla de Gestión de Preguntas
   -------------------------------------------------------------------------- */
.table-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  padding: 1.5rem;
  overflow: hidden;
}

.table-filter-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.table-responsive-wrapper {
  overflow-x: auto;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
}

.admin-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.875rem;
}

.admin-table th {
  background-color: var(--bg-surface-secondary);
  color: var(--text-secondary);
  font-weight: 600;
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  white-space: nowrap;
}

.admin-table td {
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-primary);
  vertical-align: middle;
}

.admin-table tr:hover {
  background-color: rgba(99, 102, 241, 0.03);
}

.table-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  white-space: nowrap;
}

.btn-icon-action {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
}

.btn-icon-action.edit-btn:hover {
  background-color: var(--primary-50);
  border-color: var(--primary-400);
  color: var(--primary-700);
}

.btn-icon-action.delete-btn:hover {
  background-color: #fef2f2;
  border-color: #fca5a5;
  color: #dc2626;
}

/* Mobile Tabs */
.mobile-view-tabs {
  display: none;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.tab-btn {
  flex: 1;
  padding: 0.6rem;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-subtle);
  background: var(--bg-surface);
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  text-align: center;
}

.tab-btn.active {
  background: var(--primary-600);
  color: white;
  border-color: var(--primary-600);
}

@media (max-width: 900px) {
  .editor-split-grid {
    grid-template-columns: 1fr;
  }

  .mobile-view-tabs {
    display: flex;
  }

  .editor-card.mobile-hidden,
  .preview-container.mobile-hidden {
    display: none;
  }

  .preview-container {
    position: static;
  }
}

@media (max-width: 768px) {
  .admin-header {
    height: 60px;
    max-width: 100vw;
    overflow: visible;
  }

  .admin-header-inner {
    padding: 0 0.75rem;
    gap: 0.45rem;
  }

  .admin-brand-group {
    gap: 0.45rem;
  }

  .admin-badge {
    padding: 0.25rem 0.5rem;
    font-size: 0.7rem;
  }

  .admin-badge-text {
    display: none;
  }

  .admin-header-actions {
    gap: 0.45rem;
  }

  .admin-header-actions .btn-outline {
    width: 38px;
    height: 38px;
    padding: 0;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
  }

  .admin-header-actions .btn-text-hide {
    display: none !important;
  }

  .admin-main {
    padding: 1rem 0.75rem 3rem;
    max-width: 100vw;
    overflow-x: hidden;
  }
}