/* ==========================================================================
       Delinea Comics Admin - Variables & Design Tokens (Red & White Editorial Dark)
       ========================================================================== */
    :root {
      --bg-main: #0b0c10;
      --bg-surface: #111319;
      --bg-card: rgba(18, 20, 28, 0.78);
      --bg-card-hover: rgba(28, 30, 42, 0.92);
      --bg-glass: rgba(15, 17, 24, 0.9);
      --bg-sidebar: rgba(13, 15, 20, 0.96);

      --accent-primary: #e20613;
      --accent-primary-rgb: 226, 6, 19;
      --accent-primary-hover: #c40510;
      --accent-primary-light: #ff4d5a;
      --accent-indigo: #e20613;
      --accent-blue: #3b82f6;
      --accent-cyan: #ff2e3b;
      --accent-danger: #ef4444;
      --accent-danger-hover: #dc2626;
      --accent-success: #10b981;
      
      --accent-subtle: rgba(var(--accent-primary-rgb), 0.18);
      --accent-glow: rgba(var(--accent-primary-rgb), 0.45);
      --accent-glow-strong: rgba(var(--accent-primary-rgb), 0.75);

      --font-family: 'Plus Jakarta Sans', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
      --text-primary: #ffffff;
      --text-secondary: #d1d5db;
      --text-muted: #6b7280;
      --text-dim: #94a3b8;

      --border-subtle: rgba(255, 255, 255, 0.08);
      --border-focus: rgba(var(--accent-primary-rgb), 0.6);
      
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
      --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.45);
      --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.6);
      --shadow-glow: 0 0 24px var(--accent-glow);

      --sidebar-width: 260px;
      --header-height: 72px;
      --border-radius-sm: 8px;
      --border-radius-md: 14px;
      --border-radius-lg: 20px;
      --border-radius-full: 9999px;

      --transition-fast: 0.18s cubic-bezier(0.4, 0, 0.2, 1);
      --transition-normal: 0.28s cubic-bezier(0.4, 0, 0.2, 1);
    }

    [data-theme="light"] {
      --bg-main: #f1f5f9;
      --bg-surface: #ffffff;
      --bg-card: rgba(255, 255, 255, 0.88);
      --bg-card-hover: rgba(241, 245, 249, 0.95);
      --bg-glass: rgba(255, 255, 255, 0.92);
      --bg-sidebar: rgba(255, 255, 255, 0.95);

      --text-primary: #0f172a;
      --text-secondary: #334155;
      --text-muted: #64748b;
      --text-dim: #475569;

      --border-subtle: rgba(0, 0, 0, 0.08);
      --border-focus: rgba(var(--accent-primary-rgb), 0.6);
      --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.06);
      --shadow-md: 0 8px 20px rgba(0, 0, 0, 0.08);
      --shadow-lg: 0 16px 36px rgba(0, 0, 0, 0.12);
    }

    /* Reset */
    * {
      margin: 0;
      padding: 0;
      box-sizing: border-box;
    }

    html {
      font-family: var(--font-family);
      background-color: var(--bg-main);
      color: var(--text-primary);
      scroll-behavior: smooth;
      -webkit-font-smoothing: antialiased;
    }

    body {
      min-height: 100vh;
      background: var(--bg-main);
      overflow-x: hidden;
      display: flex;
    }

    a {
      text-decoration: none;
      color: inherit;
    }

    button {
      cursor: pointer;
      border: none;
      background: none;
      font-family: inherit;
      color: inherit;
    }

    input, textarea, select {
      font-family: inherit;
      color: inherit;
    }

    /* ==========================================================================
       Layout: Sidebar & Main Area
       ========================================================================== */
    .admin-sidebar {
      width: var(--sidebar-width);
      min-height: 100vh;
      background: var(--bg-sidebar);
      backdrop-filter: blur(16px);
      -webkit-backdrop-filter: blur(16px);
      border-right: 1px solid var(--border-subtle);
      display: flex;
      flex-direction: column;
      position: fixed;
      top: 0;
      left: 0;
      bottom: 0;
      z-index: 100;
      transition: transform var(--transition-normal);
    }

    .sidebar-header {
      padding: 1.5rem 1.25rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid var(--border-subtle);
    }

    .brand-logo {
      display: flex;
      align-items: center;
      gap: 0.65rem;
      font-weight: 800;
      font-size: 1.25rem;
      letter-spacing: -0.02em;
    }

    .logo-badge {
      font-size: 0.65rem;
      text-transform: uppercase;
      letter-spacing: 0.08em;
      padding: 0.2rem 0.45rem;
      border-radius: var(--border-radius-sm);
      background: var(--accent-subtle);
      color: var(--accent-primary);
      border: 1px solid rgba(var(--accent-primary-rgb), 0.35);
      font-weight: 700;
    }

    .sidebar-close-btn {
      display: none;
      color: var(--text-muted);
      padding: 0.4rem;
      border-radius: 8px;
    }

    .sidebar-nav {
      flex: 1;
      padding: 1.25rem 0.85rem;
      display: flex;
      flex-direction: column;
      gap: 0.4rem;
      overflow-y: auto;
    }

    .nav-label {
      font-size: 0.72rem;
      text-transform: uppercase;
      font-weight: 700;
      color: var(--text-muted);
      letter-spacing: 0.08em;
      margin: 1rem 0.6rem 0.4rem;
    }

    .nav-item {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      padding: 0.75rem 0.9rem;
      border-radius: var(--border-radius-md);
      color: var(--text-secondary);
      font-weight: 600;
      font-size: 0.92rem;
      transition: all var(--transition-fast);
    }

    .nav-item:hover {
      background: rgba(255, 255, 255, 0.05);
      color: var(--text-primary);
      transform: translateX(3px);
    }

    [data-theme="light"] .nav-item:hover {
      background: rgba(0, 0, 0, 0.05);
    }

    .nav-item.active {
      background: var(--accent-subtle);
      color: var(--accent-primary-light);
      border: 1px solid rgba(var(--accent-primary-rgb), 0.3);
    }

    [data-theme="light"] .nav-item.active {
      color: var(--accent-primary);
    }

    .nav-item svg {
      width: 18px;
      height: 18px;
      flex-shrink: 0;
    }

    .sidebar-footer {
      padding: 1.25rem;
      border-top: 1px solid var(--border-subtle);
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
    }

    .btn-return-site {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      width: 100%;
      padding: 0.7rem 1rem;
      border-radius: var(--border-radius-md);
      background: rgba(255, 255, 255, 0.06);
      border: 1px solid var(--border-subtle);
      color: var(--text-primary);
      font-weight: 600;
      font-size: 0.88rem;
      transition: all var(--transition-fast);
    }

    .btn-return-site:hover {
      background: rgba(255, 255, 255, 0.12);
      transform: translateY(-1px);
    }

    /* Main Container */
    .admin-main {
      margin-left: var(--sidebar-width);
      flex: 1;
      min-height: 100vh;
      display: flex;
      flex-direction: column;
      width: calc(100% - var(--sidebar-width));
    }

    /* Header */
    .admin-topbar {
      min-height: var(--header-height);
      height: auto;
      background: var(--bg-glass);
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      border-bottom: 1px solid var(--border-subtle);
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 0.75rem 2rem;
      gap: 1rem;
      flex-wrap: wrap;
      position: sticky;
      top: 0;
      z-index: 90;
    }

    .topbar-left {
      display: flex;
      align-items: center;
      gap: 1rem;
    }

    .menu-toggle-btn {
      display: none;
      padding: 0.5rem;
      border-radius: var(--border-radius-sm);
      color: var(--text-primary);
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--border-subtle);
    }

    .topbar-title h1 {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-primary);
    }

    .topbar-title p {
      font-size: 0.8rem;
      color: var(--text-muted);
    }

    .topbar-right {
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 0.75rem;
      flex-wrap: wrap;
    }

    
    .genre-chips-grid {
      display: flex;
      flex-wrap: wrap;
      gap: 0.45rem;
      margin-top: 0.4rem;
    }

    .genre-select-chip {
      padding: 6px 13px;
      border-radius: 9999px;
      border: 1px solid var(--border-subtle);
      background: rgba(255, 255, 255, 0.04);
      color: var(--text-secondary);
      font-size: 0.8rem;
      font-weight: 600;
      cursor: pointer;
      transition: all var(--transition-fast);
      user-select: none;
      display: inline-flex;
      align-items: center;
      gap: 5px;
    }

    .genre-select-chip:hover {
      background: rgba(255, 255, 255, 0.1);
      color: var(--text-primary);
      border-color: rgba(255, 255, 255, 0.2);
    }

    .genre-select-chip.active {
      background: var(--accent-primary);
      color: #ffffff;
      border-color: var(--accent-primary-light);
      box-shadow: 0 2px 10px var(--accent-glow);
    }

    .btn-theme-toggle {
      width: 40px;
      height: 40px;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.05);
      border: 1px solid var(--border-subtle);
      color: var(--text-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      transition: all var(--transition-fast);
    }

    .btn-theme-toggle:hover {
      background: rgba(255, 255, 255, 0.12);
      transform: scale(1.05);
    }

    .btn-primary-action {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      background: var(--accent-primary);
      color: #ffffff;
      padding: 0.65rem 1.25rem;
      border-radius: var(--border-radius-md);
      font-weight: 600;
      font-size: 0.9rem;
      box-shadow: 0 4px 14px var(--accent-glow);
      transition: all var(--transition-fast);
    }

    .btn-primary-action:hover:not(:disabled):not(.btn-blocked):not(.is-saving):not([data-saving="true"]) {
      background: var(--accent-primary-hover);
      transform: translateY(-2px);
      box-shadow: 0 6px 20px var(--accent-glow-strong);
    }

    /* Estados de bloqueo y guardado */
    .btn-primary-action:disabled,
    .btn-primary-action.btn-blocked,
    .btn-primary-action.is-saving,
    .btn-primary-action[data-saving="true"] {
      cursor: not-allowed !important;
      opacity: 0.65 !important;
      background: #1e293b !important;
      color: #94a3b8 !important;
      border: 1px solid rgba(239, 68, 68, 0.5) !important;
      box-shadow: none !important;
      transform: none !important;
      pointer-events: auto !important; /* Permite mostrar el cursor de prohibición al pasar el ratón */
      user-select: none !important;
      position: relative;
    }

    /* Al pasar el cursor del ratón durante el guardado: Bloqueo visual estricto en lugar de sombreado */
    .btn-primary-action:disabled:hover,
    .btn-primary-action.btn-blocked:hover,
    .btn-primary-action.is-saving:hover,
    .btn-primary-action[data-saving="true"]:hover {
      cursor: not-allowed !important;
      background: rgba(239, 68, 68, 0.22) !important;
      color: #fca5a5 !important;
      border-color: #ef4444 !important;
      transform: none !important;
      box-shadow: 0 0 14px rgba(239, 68, 68, 0.4) !important;
      filter: none !important;
    }

    .btn-primary-action.btn-blocked:hover::after,
    .btn-primary-action.is-saving:hover::after,
    .btn-primary-action[data-saving="true"]:hover::after {
      content: " 🚫 (Bloqueado)";
      font-size: 0.74rem;
      font-weight: 800;
      color: #f87171;
      margin-left: 6px;
    }

    /* Content Area */
    .admin-content {
      padding: 2rem;
      flex: 1;
      max-width: 1400px;
      width: 100%;
      margin: 0 auto;
    }

    /* Dashboard Stats Grid */
    .stats-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
      gap: 1.25rem;
      margin-bottom: 2.5rem;
    }

    .stat-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--border-radius-lg);
      padding: 1.35rem;
      display: flex;
      align-items: center;
      gap: 1.1rem;
      backdrop-filter: blur(12px);
      transition: all var(--transition-fast);
    }

    .stat-card:hover {
      transform: translateY(-3px);
      border-color: rgba(var(--accent-primary-rgb), 0.35);
      box-shadow: var(--shadow-md);
    }

    .stat-icon {
      width: 48px;
      height: 48px;
      border-radius: var(--border-radius-md);
      background: var(--accent-subtle);
      color: var(--accent-primary);
      display: flex;
      align-items: center;
      justify-content: center;
      font-size: 1.35rem;
      flex-shrink: 0;
    }

    .stat-info h3 {
      font-size: 0.82rem;
      text-transform: uppercase;
      letter-spacing: 0.05em;
      color: var(--text-muted);
      margin-bottom: 0.25rem;
      font-weight: 600;
    }

    .stat-value {
      font-size: 1.65rem;
      font-weight: 800;
      color: var(--text-primary);
    }

    /* Section Headers */
    .section-header {
      display: flex;
      align-items: center;
      justify-content: space-between;
      margin-bottom: 1.5rem;
      flex-wrap: wrap;
      gap: 1rem;
    }

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

    .section-filters {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      flex-wrap: wrap;
    }

    .search-box {
      display: flex;
      align-items: center;
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--border-radius-md);
      padding: 0.55rem 0.9rem;
      gap: 0.6rem;
      color: var(--text-muted);
      width: 260px;
      transition: border-color var(--transition-fast);
    }

    .search-box:focus-within {
      border-color: var(--border-focus);
      box-shadow: 0 0 0 3px var(--accent-subtle);
    }

    .search-box input {
      border: none;
      background: none;
      outline: none;
      font-size: 0.9rem;
      color: var(--text-primary);
      width: 100%;
    }

    .filter-select {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--border-radius-md);
      padding: 0.6rem 1rem;
      color: var(--text-primary);
      font-size: 0.88rem;
      outline: none;
      cursor: pointer;
    }

    .filter-select option {
      background: var(--bg-surface);
      color: var(--text-primary);
    }

    /* Comics Grid */
    .comics-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
      gap: 1.5rem;
      margin-bottom: 3rem;
    }

    .admin-comic-card {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--border-radius-lg);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      backdrop-filter: blur(12px);
      transition: all var(--transition-fast);
      position: relative;
    }

    .admin-comic-card:hover {
      transform: translateY(-4px);
      border-color: rgba(var(--accent-primary-rgb), 0.4);
      box-shadow: var(--shadow-lg);
    }

    .card-cover-container {
      position: relative;
      width: 100%;
      height: 200px;
      overflow: hidden;
      background: #000;
    }

    .card-cover-img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      transition: transform 0.4s ease;
    }

    .admin-comic-card:hover .card-cover-img {
      transform: scale(1.04);
    }

    .card-badges {
      position: absolute;
      top: 10px;
      left: 10px;
      display: flex;
      flex-wrap: wrap;
      gap: 0.4rem;
      z-index: 2;
    }

    .genre-badge {
      font-size: 0.72rem;
      font-weight: 700;
      padding: 0.25rem 0.6rem;
      border-radius: var(--border-radius-full);
      background: rgba(14, 20, 36, 0.85);
      color: var(--accent-primary-light);
      border: 1px solid rgba(var(--accent-primary-rgb), 0.35);
      backdrop-filter: blur(8px);
    }

    .comic-status-badge {
      font-size: 0.72rem;
      font-weight: 700;
      padding: 0.25rem 0.65rem;
      border-radius: var(--border-radius-full);
      backdrop-filter: blur(8px);
      display: inline-flex;
      align-items: center;
      gap: 4px;
      box-shadow: 0 2px 8px rgba(0,0,0,0.5);
      z-index: 2;
    }

    .comic-status-badge.badge-published {
      background: rgba(16, 185, 129, 0.92);
      color: #ffffff;
      border: 1px solid rgba(52, 211, 153, 0.6);
    }

    .comic-status-badge.badge-draft {
      background: rgba(245, 158, 11, 0.95);
      color: #0f172a;
      border: 1px solid rgba(251, 191, 36, 0.7);
      font-weight: 800;
    }

    .card-body {
      padding: 1.25rem;
      display: flex;
      flex-direction: column;
      flex: 1;
    }

    .card-title {
      font-size: 1.1rem;
      font-weight: 700;
      margin-bottom: 0.35rem;
      color: var(--text-primary);
      line-height: 1.3;
    }

    .card-author {
      font-size: 0.85rem;
      color: var(--text-muted);
      margin-bottom: 0.8rem;
      display: flex;
      align-items: center;
      gap: 0.4rem;
    }

    .card-synopsis {
      font-size: 0.85rem;
      color: var(--text-secondary);
      line-height: 1.45;
      margin-bottom: 1.25rem;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
      text-overflow: ellipsis;
      flex: 1;
    }

    .card-meta-stats {
      display: flex;
      align-items: center;
      gap: 1rem;
      font-size: 0.82rem;
      color: var(--text-muted);
      margin-bottom: 1rem;
      padding-top: 0.75rem;
      border-top: 1px solid var(--border-subtle);
    }

    .card-meta-stats span {
      display: inline-flex;
      align-items: center;
      gap: 0.35rem;
    }

    .card-actions {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 0.65rem;
    }

    .btn-action-chapters {
      grid-column: span 2;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      padding: 0.65rem;
      border-radius: var(--border-radius-md);
      background: rgba(var(--accent-primary-rgb), 0.16);
      color: var(--accent-primary-light);
      border: 1px solid rgba(var(--accent-primary-rgb), 0.45);
      font-weight: 700;
      font-size: 0.85rem;
      transition: all var(--transition-fast);
    }

    .btn-action-chapters:hover {
      background: var(--accent-primary);
      color: #ffffff;
      box-shadow: 0 4px 16px var(--accent-glow);
      transform: translateY(-1px);
    }

    .btn-action-status {
      grid-column: span 2;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.45rem;
      padding: 0.55rem 0.8rem;
      border-radius: var(--border-radius-md);
      font-weight: 700;
      font-size: 0.82rem;
      cursor: pointer;
      transition: all var(--transition-fast);
      border: 1px solid transparent;
    }

    .btn-action-status.is-draft {
      background: rgba(245, 158, 11, 0.12);
      color: #fbbf24;
      border-color: rgba(245, 158, 11, 0.35);
    }

    .btn-action-status.is-draft:hover {
      background: #f59e0b;
      color: #0f172a;
      box-shadow: 0 4px 14px rgba(245, 158, 11, 0.3);
    }

    .btn-action-status.is-published {
      background: rgba(16, 185, 129, 0.12);
      color: #34d399;
      border-color: rgba(16, 185, 129, 0.35);
    }

    .btn-action-status.is-published:hover {
      background: #10b981;
      color: #ffffff;
      box-shadow: 0 4px 14px rgba(16, 185, 129, 0.3);
    }

    .btn-action-edit {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.4rem;
      padding: 0.6rem;
      border-radius: var(--border-radius-md);
      background: rgba(var(--accent-primary-rgb), 0.15);
      color: var(--accent-primary-light);
      border: 1px solid rgba(var(--accent-primary-rgb), 0.3);
      font-weight: 600;
      font-size: 0.85rem;
      transition: all var(--transition-fast);
    }

    .btn-action-edit:hover {
      background: var(--accent-primary);
      color: #fff;
    }

    .btn-action-delete {
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 0.4rem;
      padding: 0.6rem;
      border-radius: var(--border-radius-md);
      background: rgba(239, 68, 68, 0.12);
      color: #f87171;
      border: 1px solid rgba(239, 68, 68, 0.25);
      font-weight: 600;
      font-size: 0.85rem;
      transition: all var(--transition-fast);
    }

    .btn-action-delete:hover {
      background: var(--accent-danger);
      color: #fff;
    }

    /* Chapter Manager Modal Styles */
    .chapter-bar {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      flex-wrap: wrap;
      margin-bottom: 1.25rem;
      background: rgba(255, 255, 255, 0.03);
      padding: 0.85rem;
      border-radius: var(--border-radius-md);
      border: 1px solid var(--border-subtle);
    }

    .chapter-bar select {
      flex: 1;
      min-width: 200px;
    }

    .pages-dropzone {
      border: 2px dashed rgba(var(--accent-primary-rgb), 0.45);
      background: rgba(var(--accent-primary-rgb), 0.04);
      border-radius: var(--border-radius-md);
      padding: 1.5rem 1rem;
      text-align: center;
      cursor: pointer;
      transition: all var(--transition-fast);
      margin-bottom: 1rem;
    }

    .pages-dropzone:hover, .pages-dropzone.dragover {
      background: rgba(var(--accent-primary-rgb), 0.12);
      border-color: var(--accent-primary);
    }

    .pages-grid {
      display: grid;
      grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
      gap: 1rem;
      max-height: 380px;
      overflow-y: auto;
      padding: 0.5rem;
      background: var(--bg-main);
      border-radius: var(--border-radius-md);
      border: 1px solid var(--border-subtle);
      margin-top: 0.75rem;
    }

    .page-card {
      position: relative;
      aspect-ratio: 2 / 3;
      border-radius: var(--border-radius-sm);
      overflow: hidden;
      border: 1px solid var(--border-subtle);
      background: #020617;
      box-shadow: var(--shadow-sm);
      transition: transform var(--transition-fast), border-color var(--transition-fast), box-shadow var(--transition-fast), opacity var(--transition-fast);
      cursor: grab;
      user-select: none;
    }

    .page-card:active {
      cursor: grabbing;
    }

    .page-card.is-dragging {
      opacity: 0.35;
      transform: scale(0.94);
      border: 2px dashed var(--accent-primary) !important;
      box-shadow: 0 0 16px var(--accent-glow) !important;
    }

    .page-card.drop-target {
      border: 2px solid #38bdf8 !important;
      box-shadow: 0 0 18px rgba(56, 189, 248, 0.6) !important;
      transform: scale(1.04);
    }

    .page-card-drag-handle {
      position: absolute;
      top: 6px;
      left: 50%;
      transform: translateX(-50%);
      width: 24px;
      height: 22px;
      border-radius: 4px;
      background: rgba(0, 0, 0, 0.72);
      color: #94a3b8;
      display: flex;
      align-items: center;
      justify-content: center;
      z-index: 2;
      backdrop-filter: blur(4px);
      pointer-events: none;
      transition: color var(--transition-fast);
    }

    .page-card:hover .page-card-drag-handle {
      color: var(--accent-cyan);
    }

    .page-card-reorder-nav {
      position: absolute;
      bottom: 0;
      left: 0;
      right: 0;
      display: flex;
      justify-content: space-between;
      gap: 2px;
      padding: 4px 6px;
      background: linear-gradient(to top, rgba(0,0,0,0.85) 0%, rgba(0,0,0,0.4) 70%, transparent 100%);
      z-index: 2;
    }

    .btn-page-nav-left,
    .btn-page-nav-right {
      background: rgba(255, 255, 255, 0.15);
      color: #fff;
      border: 1px solid rgba(255, 255, 255, 0.2);
      border-radius: 4px;
      font-size: 0.75rem;
      font-weight: 700;
      padding: 2px 8px;
      cursor: pointer;
      transition: background var(--transition-fast), transform var(--transition-fast);
    }

    .btn-page-nav-left:hover:not(:disabled),
    .btn-page-nav-right:hover:not(:disabled) {
      background: var(--accent-primary);
      transform: scale(1.08);
    }

    .page-card:hover {
      transform: scale(1.02);
      border-color: var(--accent-primary);
    }

    .page-card img {
      width: 100%;
      height: 100%;
      object-fit: cover;
      display: block;
    }

    .page-card-badge {
      position: absolute;
      top: 6px;
      left: 6px;
      font-size: 0.7rem;
      font-weight: 700;
      padding: 2px 7px;
      border-radius: var(--border-radius-full);
      background: rgba(0, 0, 0, 0.78);
      color: #fff;
      backdrop-filter: blur(4px);
      z-index: 2;
    }

    .page-card-remove {
      position: absolute;
      top: 6px;
      right: 6px;
      width: 26px;
      height: 26px;
      border-radius: 50%;
      background: rgba(239, 68, 68, 0.9);
      color: #ffffff;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      border: none;
      transition: all var(--transition-fast);
      z-index: 2;
    }

    .page-card-remove:hover {
      transform: scale(1.15);
      background: var(--accent-danger);
    }

    .add-page-url-row {
      display: flex;
      gap: 0.5rem;
      margin-top: 0.75rem;
    }

    .add-page-url-row input {
      flex: 1;
    }


    /* Empty state */
    .empty-state {
      grid-column: 1 / -1;
      text-align: center;
      padding: 3.5rem 2rem;
      background: var(--bg-card);
      border: 1px dashed var(--border-subtle);
      border-radius: var(--border-radius-lg);
      margin-top: 1.5rem;
    }

    .empty-state svg {
      color: var(--text-muted);
      margin-bottom: 1rem;
    }

    .empty-state h3 {
      font-size: 1.25rem;
      margin-bottom: 0.5rem;
      color: var(--text-primary);
    }

    .empty-state p {
      color: var(--text-muted);
      margin-bottom: 1.5rem;
    }

    /* Categorías & Géneros Cards */
    .admin-category-card {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--border-subtle);
      border-radius: var(--border-radius-md);
      padding: 0.85rem 1rem;
      display: flex;
      align-items: center;
      justify-content: space-between;
      gap: 0.75rem;
      transition: all 0.2s ease;
    }
    .admin-category-card:hover {
      background: rgba(56, 189, 248, 0.06);
      border-color: rgba(56, 189, 248, 0.35);
      transform: translateY(-2px);
    }
    .admin-category-card.admin-cat-unused {
      border-color: rgba(239, 68, 68, 0.25);
      background: rgba(239, 68, 68, 0.04);
    }
    .admin-category-card.admin-cat-unused:hover {
      border-color: rgba(239, 68, 68, 0.5);
      background: rgba(239, 68, 68, 0.09);
    }
    .admin-category-card.selected-for-delete {
      border-color: #ef4444 !important;
      background: rgba(239, 68, 68, 0.15) !important;
    }
    .admin-cat-icon {
      font-size: 1.3rem;
      width: 36px;
      height: 36px;
      border-radius: 10px;
      background: rgba(255, 255, 255, 0.05);
      display: flex;
      align-items: center;
      justify-content: center;
      flex-shrink: 0;
    }
    .admin-cat-info {
      flex: 1;
      min-width: 0;
    }
    .admin-cat-name {
      font-weight: 700;
      font-size: 0.9rem;
      color: var(--text-primary);
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }
    .admin-cat-count {
      font-size: 0.76rem;
      color: var(--text-muted);
    }
    .admin-cat-delete-btn {
      background: rgba(239, 68, 68, 0.1);
      border: 1px solid rgba(239, 68, 68, 0.25);
      color: #f87171;
      width: 30px;
      height: 30px;
      border-radius: 8px;
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: all 0.2s;
      flex-shrink: 0;
    }
    .admin-cat-delete-btn:hover {
      background: #ef4444;
      color: #fff;
      border-color: #ef4444;
    }

    /* Backup & Tools Section */
    .tools-section {
      background: var(--bg-card);
      border: 1px solid var(--border-subtle);
      border-radius: var(--border-radius-lg);
      padding: 2rem;
      backdrop-filter: blur(12px);
      margin-bottom: 3rem;
    }

    .tools-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
      gap: 1.5rem;
      margin-top: 1.5rem;
    }

    .tool-box {
      background: rgba(255, 255, 255, 0.03);
      border: 1px solid var(--border-subtle);
      border-radius: var(--border-radius-md);
      padding: 1.5rem;
      display: flex;
      flex-direction: column;
      gap: 0.8rem;
    }

    [data-theme="light"] .tool-box {
      background: rgba(0, 0, 0, 0.02);
    }

    .tool-box h4 {
      font-size: 1.05rem;
      font-weight: 700;
      display: flex;
      align-items: center;
      gap: 0.5rem;
    }

    .tool-box p {
      font-size: 0.85rem;
      color: var(--text-muted);
      line-height: 1.5;
      flex: 1;
    }

    .btn-secondary {
      display: inline-flex;
      align-items: center;
      justify-content: center;
      gap: 0.5rem;
      padding: 0.65rem 1.25rem;
      border-radius: var(--border-radius-md);
      background: rgba(255, 255, 255, 0.08);
      color: var(--text-primary);
      border: 1px solid var(--border-subtle);
      font-weight: 600;
      font-size: 0.88rem;
      transition: all var(--transition-fast);
    }

    .btn-secondary:hover {
      background: rgba(255, 255, 255, 0.15);
      border-color: rgba(255, 255, 255, 0.2);
    }

    /* ==========================================================================
       Modals (Glassmorphism Dialogs)
       ========================================================================== */
    .modal-overlay {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: rgba(0, 0, 0, 0.75);
      backdrop-filter: blur(10px);
      -webkit-backdrop-filter: blur(10px);
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 1.5rem;
      z-index: 200;
      opacity: 0;
      visibility: hidden;
      transition: all var(--transition-normal);
    }

    .modal-overlay.active {
      opacity: 1;
      visibility: visible;
    }

    .modal-card {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--border-radius-lg);
      width: 100%;
      max-width: 600px;
      max-height: 90vh;
      overflow-y: auto;
      box-shadow: var(--shadow-lg);
      transform: scale(0.94) translateY(10px);
      transition: all var(--transition-normal);
      display: flex;
      flex-direction: column;
    }

    .modal-overlay.active .modal-card {
      transform: scale(1) translateY(0);
    }

    .modal-header {
      padding: 1.25rem 1.5rem;
      border-bottom: 1px solid var(--border-subtle);
      display: flex;
      align-items: center;
      justify-content: space-between;
    }

    .modal-header h3 {
      font-size: 1.2rem;
      font-weight: 700;
      color: var(--text-primary);
    }

    .modal-close-btn {
      color: var(--text-muted);
      padding: 0.4rem;
      border-radius: 8px;
      transition: color var(--transition-fast);
    }

    .modal-close-btn:hover {
      color: var(--text-primary);
    }

    .modal-body {
      padding: 1.5rem;
      display: flex;
      flex-direction: column;
      gap: 1.25rem;
    }

    .form-group {
      display: flex;
      flex-direction: column;
      gap: 0.45rem;
    }

    .form-row {
      display: grid;
      grid-template-columns: 1fr 1fr;
      gap: 1rem;
    }

    .form-label {
      font-size: 0.85rem;
      font-weight: 600;
      color: var(--text-secondary);
    }

    .form-input, .form-textarea {
      background: var(--bg-main);
      border: 1px solid var(--border-subtle);
      border-radius: var(--border-radius-md);
      padding: 0.75rem 1rem;
      color: var(--text-primary);
      font-size: 0.9rem;
      outline: none;
      transition: all var(--transition-fast);
    }

    .form-input:focus, .form-textarea:focus {
      border-color: var(--border-focus);
      box-shadow: 0 0 0 3px var(--accent-subtle);
    }

    .form-textarea {
      min-height: 90px;
      resize: vertical;
    }

    /* Cover Upload Tabs / Area */
    .cover-upload-wrapper {
      border: 1px solid var(--border-subtle);
      border-radius: var(--border-radius-md);
      overflow: hidden;
      background: var(--bg-main);
    }

    .cover-tabs {
      display: flex;
      border-bottom: 1px solid var(--border-subtle);
      background: rgba(255, 255, 255, 0.02);
    }

    .cover-tab-btn {
      flex: 1;
      padding: 0.65rem;
      font-size: 0.82rem;
      font-weight: 600;
      color: var(--text-muted);
      text-align: center;
      transition: all var(--transition-fast);
    }

    .cover-tab-btn.active {
      color: var(--accent-primary-light);
      background: var(--accent-subtle);
      border-bottom: 2px solid var(--accent-primary);
    }

    .tab-content {
      padding: 1rem;
      display: none;
    }

    .tab-content.active {
      display: block;
    }

    .dropzone {
      border: 2px dashed rgba(var(--accent-primary-rgb), 0.35);
      border-radius: var(--border-radius-md);
      padding: 1.5rem 1rem;
      text-align: center;
      cursor: pointer;
      background: rgba(var(--accent-primary-rgb), 0.04);
      transition: all var(--transition-fast);
    }

    .dropzone:hover, .dropzone.dragover {
      background: rgba(var(--accent-primary-rgb), 0.08);
      border-color: var(--accent-primary);
    }

    .dropzone svg {
      color: var(--accent-primary);
      margin-bottom: 0.5rem;
    }

    .dropzone p {
      font-size: 0.85rem;
      color: var(--text-secondary);
    }

    .dropzone span {
      font-size: 0.75rem;
      color: var(--text-muted);
    }

    .cover-preview-box {
      margin-top: 0.75rem;
      display: flex;
      align-items: center;
      gap: 1rem;
      background: rgba(255, 255, 255, 0.03);
      padding: 0.6rem 0.8rem;
      border-radius: var(--border-radius-sm);
    }

    .preview-thumb {
      width: 50px;
      height: 70px;
      object-fit: cover;
      border-radius: 6px;
      background: #000;
    }

    .preview-info {
      font-size: 0.8rem;
      color: var(--text-muted);
      flex: 1;
    }

    .modal-footer {
      padding: 1.25rem 1.5rem;
      border-top: 1px solid var(--border-subtle);
      display: flex;
      align-items: center;
      justify-content: flex-end;
      gap: 0.75rem;
    }

    /* Banner Management Cards */
    .banner-card-item {
      background: rgba(18, 25, 48, 0.65);
      border: 1px solid var(--border-subtle);
      border-radius: var(--border-radius-md);
      overflow: hidden;
      display: flex;
      flex-direction: column;
      transition: all var(--transition-fast);
      position: relative;
    }
    .banner-card-item:hover {
      border-color: rgba(var(--accent-primary-rgb), 0.45);
      transform: translateY(-2px);
      box-shadow: 0 6px 18px rgba(0,0,0,0.35);
    }
    .banner-card-thumb {
      height: 110px;
      background-size: cover;
      background-position: center;
      position: relative;
      display: flex;
      align-items: flex-end;
      padding: 10px;
    }
    .banner-card-thumb-overlay {
      position: absolute;
      inset: 0;
      background: linear-gradient(0deg, rgba(9,13,22,0.92) 0%, rgba(9,13,22,0.2) 60%, transparent 100%);
    }
    .banner-order-badge {
      position: absolute;
      top: 8px;
      left: 8px;
      z-index: 2;
      background: rgba(0,0,0,0.7);
      backdrop-filter: blur(4px);
      color: #fff;
      font-size: 0.72rem;
      font-weight: 700;
      padding: 2px 8px;
      border-radius: 999px;
      border: 1px solid rgba(255,255,255,0.15);
    }
    .banner-card-body {
      padding: 0.9rem;
      display: flex;
      flex-direction: column;
      flex: 1;
      justify-content: space-between;
      gap: 0.6rem;
    }
    .banner-card-title {
      font-size: 0.92rem;
      font-weight: 700;
      color: var(--text-primary);
      line-height: 1.3;
    }
    .banner-card-sub {
      font-size: 0.78rem;
      color: var(--text-muted);
      line-height: 1.4;
      display: -webkit-box;
      -webkit-line-clamp: 2;
      -webkit-box-orient: vertical;
      overflow: hidden;
    }
    .banner-card-actions {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding-top: 0.6rem;
      border-top: 1px solid var(--border-subtle);
    }
    .banner-order-btns {
      display: flex;
      gap: 4px;
    }
    .banner-icon-btn {
      width: 28px;
      height: 28px;
      border-radius: 6px;
      background: rgba(255,255,255,0.06);
      border: 1px solid var(--border-subtle);
      color: var(--text-secondary);
      display: flex;
      align-items: center;
      justify-content: center;
      cursor: pointer;
      transition: all var(--transition-fast);
    }
    .banner-icon-btn:hover {
      background: var(--accent-subtle);
      color: var(--accent-primary-light);
      border-color: rgba(var(--accent-primary-rgb), 0.4);
    }

    /* Toast Notification */
    .toast-container {
      position: fixed;
      bottom: 2rem;
      right: 2rem;
      z-index: 300;
      display: flex;
      flex-direction: column;
      gap: 0.6rem;
      pointer-events: none;
    }

    .toast {
      background: var(--bg-surface);
      border: 1px solid var(--border-subtle);
      border-radius: var(--border-radius-md);
      padding: 0.9rem 1.25rem;
      box-shadow: var(--shadow-lg);
      color: var(--text-primary);
      font-size: 0.88rem;
      font-weight: 600;
      display: flex;
      align-items: center;
      gap: 0.6rem;
      pointer-events: auto;
      transform: translateY(20px);
      opacity: 0;
      transition: all var(--transition-normal);
    }

    .toast.show {
      transform: translateY(0);
      opacity: 1;
    }

    .toast-success {
      border-left: 4px solid var(--accent-success);
    }

    .toast-error {
      border-left: 4px solid var(--accent-danger);
    }

    .toast-info {
      border-left: 4px solid var(--accent-primary);
    }

    /* ==========================================================================
       Responsive Media Queries
       ========================================================================== */
    @media (max-width: 900px) {
      .admin-sidebar {
        transform: translateX(-100%);
      }

      .admin-sidebar.open {
        transform: translateX(0);
      }

      .sidebar-close-btn {
        display: block;
      }

      .admin-main {
        margin-left: 0;
        width: 100%;
      }

      .menu-toggle-btn {
        display: block;
      }

      .admin-content {
        padding: 1.25rem;
      }
    }

    @media (max-width: 600px) {
      .form-row {
        grid-template-columns: 1fr;
      }

      .section-filters {
        width: 100%;
      }

      .search-box {
        width: 100%;
      }

      .filter-select {
        width: 100%;
      }

      .admin-topbar {
        padding: 0.75rem 1rem;
        gap: 0.75rem;
      }

      .topbar-right {
        width: 100%;
        justify-content: flex-start;
      }

      .stats-grid {
        grid-template-columns: 1fr 1fr;
      }
    }

    /* ==========================================================================
       Control de Visibilidad y Pantalla de Inicio de Sesión (Login)
       ========================================================================== */
    html.not-authenticated #adminSidebar,
    html.not-authenticated .admin-main,
    html.not-authenticated .modal-overlay:not(#adminLoginOverlay) {
      display: none !important;
    }

    html:not(.not-authenticated) #adminLoginOverlay {
      display: none !important;
    }

    #adminLoginOverlay {
      position: fixed;
      inset: 0;
      z-index: 99999;
      background: #070a12;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 1.5rem;
      backdrop-filter: blur(14px);
      -webkit-backdrop-filter: blur(14px);
      box-sizing: border-box;
    }

    .login-card {
      width: 100%;
      max-width: 440px;
      background: rgba(14, 20, 36, 0.94);
      border: 1px solid rgba(var(--accent-primary-rgb), 0.35);
      border-radius: var(--border-radius-lg);
      padding: 2.4rem 2rem;
      box-shadow: 0 24px 60px rgba(0, 0, 0, 0.85), 0 0 35px rgba(var(--accent-primary-rgb), 0.25);
      display: flex;
      flex-direction: column;
      gap: 1.35rem;
      position: relative;
      overflow: hidden;
      transition: all 0.3s ease;
      box-sizing: border-box;
    }

    .login-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 3.5px;
      background: var(--accent-primary);
    }

    .login-header {
      text-align: center;
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 0.5rem;
    }

    .login-logo {
      display: inline-flex;
      align-items: center;
      gap: 0.6rem;
      font-size: 1.45rem;
      font-weight: 800;
      color: var(--text-primary);
      text-decoration: none;
    }

    .login-title {
      font-size: 1.25rem;
      font-weight: 700;
      color: var(--text-primary);
      margin-top: 0.4rem;
    }

    .login-subtitle {
      font-size: 0.84rem;
      color: var(--text-muted);
      line-height: 1.45;
      margin: 0;
    }

    .login-input-group {
      position: relative;
      display: flex;
      flex-direction: column;
      gap: 0.4rem;
    }

    .login-input-wrapper {
      position: relative;
      display: flex;
      align-items: center;
      width: 100%;
    }

    .login-input-wrapper svg.input-icon {
      position: absolute;
      left: 14px;
      color: var(--text-muted);
      pointer-events: none;
    }

    .login-input-wrapper input {
      width: 100%;
      padding: 0.75rem 2.8rem 0.75rem 42px;
      background: rgba(0, 0, 0, 0.4);
      border: 1px solid var(--border-subtle);
      border-radius: var(--border-radius-md);
      color: var(--text-primary);
      font-size: 0.92rem;
      transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
      outline: none;
      font-family: inherit;
      box-sizing: border-box;
    }

    .login-input-wrapper input:focus {
      border-color: var(--accent-primary);
      box-shadow: 0 0 0 3px rgba(var(--accent-primary-rgb), 0.25);
    }

    .toggle-password-btn {
      position: absolute;
      right: 12px;
      background: none;
      border: none;
      color: var(--text-muted);
      cursor: pointer;
      display: flex;
      align-items: center;
      padding: 4px;
      transition: color 0.2s ease;
    }

    .toggle-password-btn:hover {
      color: var(--text-primary);
    }

    .login-error-alert {
      display: none;
      align-items: center;
      gap: 10px;
      background: rgba(239, 68, 68, 0.12);
      border: 1px solid rgba(239, 68, 68, 0.35);
      color: #fca5a5;
      padding: 10px 14px;
      border-radius: var(--border-radius-md);
      font-size: 0.84rem;
    }

    @keyframes loginShake {
      0%, 100% { transform: translateX(0); }
      20%, 60% { transform: translateX(-9px); }
      40%, 80% { transform: translateX(9px); }
    }

    .login-card.shake {
      animation: loginShake 0.45s ease-in-out;
      border-color: rgba(239, 68, 68, 0.65);
      box-shadow: 0 0 32px rgba(239, 68, 68, 0.35);
    }

/* ==========================================================================
   Centrado Geométrico de Botones Circulares y de Cierre en Admin
   ========================================================================== */
.modal-close-btn,
.btn-close,
.btn-icon {
  display: inline-flex !important;
  align-items: center !important;
  justify-content: center !important;
  text-align: center !important;
  padding: 0 !important;
  line-height: 0 !important;
  box-sizing: border-box !important;
}

.modal-close-btn svg,
.btn-close svg,
.btn-icon svg {
  display: block !important;
  margin: auto !important;
  flex-shrink: 0 !important;
}

/* ==========================================================================
   Vistas Aisladas e Independientes del Panel de Control
   ========================================================================== */
.admin-view {
  animation: adminViewFade 0.22s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes adminViewFade {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Drag & Drop Reordering para Taller de Imágenes a PDF */
.i2p-scene-draggable {
  cursor: grab !important;
  user-select: none;
  transition: transform 0.15s ease, border-color 0.15s ease, opacity 0.15s ease, box-shadow 0.15s ease !important;
}

.i2p-scene-draggable:active {
  cursor: grabbing !important;
}

.i2p-scene-draggable.is-dragging {
  opacity: 0.35 !important;
  border: 2px dashed var(--accent-primary) !important;
  transform: scale(0.95) !important;
}

.i2p-scene-draggable.drop-target {
  border: 2px solid #38bdf8 !important;
  box-shadow: 0 0 16px rgba(56, 189, 248, 0.6) !important;
  transform: scale(1.03) !important;
}

/* Barra de Opciones de Conversión Directa de PDF */
.direct-pdf-options-bar {
  transition: all 0.25s ease;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

[data-theme="light"] .direct-pdf-options-bar {
  background: rgba(241, 245, 249, 0.9) !important;
  border-color: rgba(0, 0, 0, 0.1) !important;
}

[data-theme="light"] .direct-pdf-options-bar span {
  color: #1e293b !important;
}

[data-theme="light"] .direct-pdf-options-bar select {
  color: #1e293b !important;
}

[data-theme="light"] .direct-pdf-options-bar select option {
  background: #ffffff !important;
  color: #1e293b !important;
}