/* Dropdown de Categorías Multi-nivel */
.mega-dropdown {
    position: relative !important;
}

.mega-dropdown .dropdown-menu {
    width: 900px;
    max-width: 900px;
    left: 0 !important;
    right: auto !important;
    border: none;
    border-radius: 8px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
    padding: 0;
    margin-top: 2px;
    background: white;
    position: absolute;
    top: 100%;
    z-index: 1050;
}

/* Ajuste específico para alineación con el botón */
.navbar-nav .mega-dropdown {
    position: relative;
}

.navbar-nav .mega-dropdown .dropdown-menu {
    left: 0 !important;
    transform: none !important;
    margin-left: 0;
}

/* Asegurar que el dropdown se alinee perfectamente */
.mega-dropdown .dropdown-toggle {
    position: relative;
}

.mega-dropdown-content {
    display: flex;
    min-height: 350px;
    max-height: 450px;
    border-radius: 8px;
    overflow: hidden;
}

/* Categorías Principales (Sidebar Izquierdo) */
.categorias-principales {
    background: #f8f9fa;
    border-right: 1px solid #e9ecef;
    width: 280px;
    overflow-y: auto;
}

.categorias-principales .categoria-item {
    padding: 14px 18px;
    border-bottom: 1px solid #e9ecef;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: relative;
}

.categorias-principales .categoria-item:hover,
.categorias-principales .categoria-item.active {
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    color: white;
    border-left: 4px solid #ffc107;
}

.categorias-principales .categoria-item:hover .fa-chevron-right,
.categorias-principales .categoria-item.active .fa-chevron-right {
    color: white;
    transform: translateX(4px);
}

.categorias-principales .categoria-nombre {
    font-weight: 500;
    font-size: 14px;
    line-height: 1.3;
}

.categorias-principales .fa-chevron-right {
    color: #6c757d;
    font-size: 11px;
    transition: all 0.2s ease;
}

/* Subcategorías (Panel Derecho) */
.subcategorias-panel {
    flex: 1;
    padding: 25px;
    background: white;
    overflow-y: auto;
}

.subcategorias-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
    gap: 25px;
}

.subcategoria-grupo {
    min-width: 200px;
}

.subcategoria-titulo {
    font-weight: 600;
    color: #333;
    font-size: 16px;
    margin-bottom: 12px;
    padding-bottom: 8px;
    border-bottom: 2px solid #007bff;
    display: block;
    text-decoration: none;
    transition: all 0.2s ease;
    position: relative;
}

.subcategoria-titulo::before {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 2px;
    background: #ffc107;
    transition: width 0.3s ease;
}

.subcategoria-titulo:hover {
    color: #007bff;
    transform: translateX(4px);
}

.subcategoria-titulo:hover::before {
    width: 100%;
}

.subcategoria-lista {
    list-style: none;
    padding: 0;
    margin: 0;
}

.subcategoria-lista li {
    margin-bottom: 6px;
}

.subcategoria-lista a {
    color: #6c757d;
    text-decoration: none;
    font-size: 14px;
    display: block;
    padding: 6px 0;
    transition: all 0.2s ease;
    position: relative;
    border-radius: 4px;
}

.subcategoria-lista a::before {
    content: '•';
    margin-right: 8px;
    color: #007bff;
    font-weight: bold;
}

.subcategoria-lista a:hover {
    color: #007bff;
    padding-left: 12px;
    background: rgba(0,123,255,0.05);
}

/* Panel vacío */
.panel-vacio {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    color: #6c757d;
    text-align: center;
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
}

.panel-vacio i {
    font-size: 64px;
    margin-bottom: 20px;
    opacity: 0.4;
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.panel-vacio h5 {
    margin-bottom: 12px;
    font-weight: 600;
    color: #333;
}

.panel-vacio p {
    font-size: 14px;
    margin: 0;
    opacity: 0.8;
}

/* Badges y contadores */
.categoria-contador {
    background: #007bff;
    color: white;
    font-size: 11px;
    padding: 2px 6px;
    border-radius: 10px;
    margin-left: 8px;
}

.categoria-item.active .categoria-contador {
    background: #ffc107;
    color: #333;
}

/* Separadores visuales */
.subcategoria-grupo:not(:last-child) {
    position: relative;
}

.subcategoria-grupo:not(:last-child)::after {
    content: '';
    position: absolute;
    right: -12px;
    top: 0;
    width: 1px;
    height: 100%;
    background: linear-gradient(to bottom, transparent 0%, #e9ecef 20%, #e9ecef 80%, transparent 100%);
}

/* Responsive */
@media (max-width: 768px) {
    .mega-dropdown .dropdown-menu {
        max-width: 100%;
        margin-left: -15px;
        margin-right: -15px;
        border-radius: 0;
    }
    
    .mega-dropdown-content {
        flex-direction: column;
        max-height: 500px;
    }
    
    .categorias-principales {
        width: 100%;
        max-height: 200px;
        border-right: none;
        border-bottom: 1px solid #e9ecef;
    }
    
    .subcategorias-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }
    
    .subcategorias-panel {
        padding: 20px 15px;
    }
}

/* Animaciones mejoradas */
.mega-dropdown .dropdown-menu {
    opacity: 0;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    visibility: hidden;
}

.mega-dropdown .dropdown-menu.show {
    opacity: 1;
    transform: translateY(0);
    visibility: visible;
}

.fade-in {
    animation: fadeInUp 0.4s ease-out;
}

@keyframes fadeInUp {
    from { 
        opacity: 0; 
        transform: translateY(20px);
    }
    to { 
        opacity: 1; 
        transform: translateY(0);
    }
}

/* Hover effects para el dropdown principal */
.mega-dropdown:hover .dropdown-menu {
    display: block;
}

/* Scroll personalizado mejorado */
.categorias-principales::-webkit-scrollbar,
.subcategorias-panel::-webkit-scrollbar {
    width: 8px;
}

.categorias-principales::-webkit-scrollbar-track,
.subcategorias-panel::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.categorias-principales::-webkit-scrollbar-thumb,
.subcategorias-panel::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, #007bff 0%, #0056b3 100%);
    border-radius: 4px;
}

.categorias-principales::-webkit-scrollbar-thumb:hover,
.subcategorias-panel::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, #0056b3 0%, #004085 100%);
}

/* Loading state */
.loading-subcategorias {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 200px;
}

.loading-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid #f3f3f3;
    border-top: 4px solid #007bff;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}