/* Global Styles */
:root {
    --primary: #0d6efd;
    --secondary: #6c757d;
    --success: #198754;
    --danger: #dc3545;
    --warning: #ffc107;
    --light: #f8f9fa;
    --dark: #212529;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: #333;
    background-color: #f8f9fa;
}

/* Header */
.navbar {
    box-shadow: 0 2px 4px rgba(0,0,0,.1);
}

.search-form .input-group {
    box-shadow: 0 2px 4px rgba(0,0,0,.1);
}

/* Navigation */
.navbar-nav .nav-link {
    padding: 0.5rem 1rem;
    transition: all 0.3s;
}

.navbar-nav .nav-link:hover {
    color: var(--primary);
    transform: translateY(-2px);
}

/* Dropdown Submenu */
.dropdown-submenu {
    position: absolute;
    left: 100%;
    top: 0;
    display: none;
    margin-top: -1px;
}

.dropdown-menu li:hover .dropdown-submenu {
    display: block;
}

/* Product Card */
.product-card {
    border: 1px solid #e9ecef;
    transition: all 0.3s;
}

.product-card:hover {
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transform: translateY(-5px);
}

/* Category Card */
.category-card {
    overflow: hidden;
}

.category-image {
    position: relative;
}

.category-overlay {
    background: rgba(0,0,0,0.7);
    opacity: 0;
    transition: opacity 0.3s;
}

.category-card:hover .category-overlay {
    opacity: 1;
}

/* Buttons */
.btn-primary {
    background-color: var(--primary);
    border-color: var(--primary);
    transition: all 0.3s;
}

.btn-primary:hover {
    background-color: #0b5ed7;
    border-color: #0a58ca;
    transform: translateY(-2px);
}

.btn-outline-primary:hover {
    transform: translateY(-2px);
}

/* Forms */
.form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.25rem rgba(13, 110, 253, 0.25);
}

.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

/* Tables */
.table-hover tbody tr:hover {
    background-color: rgba(13, 110, 253, 0.05);
}

/* Badges */
.badge {
    padding: 0.5em 0.8em;
    font-weight: 500;
}

/* Alerts */
.alert {
    border: none;
    border-radius: 0.5rem;
}

/* Pagination */
.page-link {
    color: var(--primary);
}

.page-item.active .page-link {
    background-color: var(--primary);
    border-color: var(--primary);
}

/* Cards */
.card {
    border: none;
    box-shadow: 0 2px 4px rgba(0,0,0,.1);
    border-radius: 0.5rem;
}

.card-header {
    background-color: var(--light);
    border-bottom: 1px solid #dee2e6;
}

/* Footer */
footer a {
    transition: color 0.3s;
}

footer a:hover {
    color: var(--primary) !important;
}

.social-links a {
    transition: transform 0.3s;
}

.social-links a:hover {
    transform: translateY(-3px);
}

/* Responsive */
@media (max-width: 768px) {
    .display-4 {
        font-size: 2rem;
    }

    .btn-lg {
        padding: 0.5rem 1rem;
        font-size: 1rem;
    }

    .card-body {
        padding: 1rem;
    }
}

/* Custom Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* Loading Spinner */
.spinner-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 200px;
}

/* Custom Scrollbar */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
}

::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #555;
}

/* Utility Classes */
.text-justify {
    text-align: justify;
}

.rounded-lg {
    border-radius: 1rem;
}

.shadow-sm {
    box-shadow: 0 1px 2px rgba(0,0,0,.1) !important;
}

.shadow-md {
    box-shadow: 0 4px 6px rgba(0,0,0,.1) !important;
}

.shadow-lg {
    box-shadow: 0 10px 15px rgba(0,0,0,.1) !important;
}