/* Resource Library CSS - Reusable Components */

:root {
    --primary-color: #6366f1;
    --primary-light: #e0e7ff;
    --success-color: #10b981;
    --warning-color: #f59e0b;
    --danger-color: #ef4444;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-500: #6b7280;
    --gray-700: #374151;
    --gray-900: #111827;
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --card-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
}

/* Resource Card Component */
.resource-card {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    overflow: hidden;
    transition: all 0.3s ease;
    display: flex;
    flex-direction: column;
    height: 100%;
    box-shadow: var(--card-shadow);
}

.resource-card:hover {
    box-shadow: var(--card-shadow-lg);
    transform: translateY(-4px);
    border-color: var(--primary-color);
}

.resource-card-header {
    padding: 1.25rem;
    background: linear-gradient(135deg, var(--primary-color) 0%, #8b5cf6 100%);
    color: white;
    position: relative;
    min-height: 80px;
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
}

.resource-card-icon {
    font-size: 2rem;
    opacity: 0.8;
    margin-bottom: 0.5rem;
}

.resource-card-title {
    margin: 0;
    font-size: 0.95rem;
    font-weight: 700;
    line-height: 1.4;
    flex: 1;
}

.resource-badge {
    display: inline-block;
    background: rgba(255, 255, 255, 0.2);
    color: white;
    padding: 0.25rem 0.75rem;
    border-radius: 999px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    white-space: nowrap;
    margin-left: 0.5rem;
}

.resource-badge.new {
    background: #dc2626;
    color: white;
}

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

.resource-meta {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.75rem;
    margin-bottom: 1rem;
    font-size: 0.85rem;
}

.meta-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--gray-600);
}

.meta-item i {
    color: var(--primary-color);
    min-width: 16px;
}

.resource-description {
    color: var(--gray-600);
    font-size: 0.875rem;
    line-height: 1.5;
    margin-bottom: 1rem;
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.resource-card-footer {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
    padding-top: 1rem;
    border-top: 1px solid var(--gray-200);
}

.resource-footer-stat {
    text-align: center;
    font-size: 0.85rem;
}

.resource-footer-stat-value {
    display: block;
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.1rem;
}

.resource-footer-stat-label {
    color: var(--gray-500);
    font-size: 0.75rem;
    text-transform: uppercase;
}

.resource-card-actions {
    display: flex;
    gap: 0.5rem;
    padding-top: 1rem;
    padding-bottom: 0;
    margin-top: auto;
}

.btn-view, .btn-download {
    flex: 1;
    padding: 0.5rem 0.75rem;
    border: none;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.4rem;
}

.btn-view {
    background: var(--gray-100);
    color: var(--gray-900);
    border: 1px solid var(--gray-300);
}

.btn-view:hover {
    background: var(--gray-200);
}

.btn-download {
    background: var(--primary-color);
    color: white;
}

.btn-download:hover {
    background: #4f46e5;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.4);
}

/* Sidebar Filter Component */
.library-sidebar {
    background: white;
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    padding: 1.5rem;
    height: fit-content;
    position: sticky;
    top: 20px;
    box-shadow: var(--card-shadow);
}

.sidebar-section {
    margin-bottom: 1.75rem;
}

.sidebar-section:last-child {
    margin-bottom: 0;
}

.sidebar-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--gray-900);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.sidebar-title i {
    color: var(--primary-color);
}

.filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.filter-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.filter-item input[type="checkbox"],
.filter-item input[type="radio"] {
    cursor: pointer;
    width: 18px;
    height: 18px;
    accent-color: var(--primary-color);
}

.filter-item label {
    cursor: pointer;
    flex: 1;
    font-size: 0.9rem;
    color: var(--gray-700);
    margin: 0;
}

.filter-item label:hover {
    color: var(--primary-color);
}

.filter-count {
    font-size: 0.8rem;
    color: var(--gray-500);
    margin-left: auto;
}

.sidebar-actions {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--gray-200);
}

.btn-apply, .btn-reset {
    padding: 0.75rem 1rem;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 0.9rem;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-apply {
    background: var(--primary-color);
    color: white;
}

.btn-apply:hover {
    background: #4f46e5;
}

.btn-reset {
    background: var(--gray-100);
    color: var(--gray-900);
    border: 1px solid var(--gray-300);
}

.btn-reset:hover {
    background: var(--gray-200);
}

/* Search Bar Component */
.library-search-bar {
    position: relative;
    margin-bottom: 2rem;
}

.search-input-wrapper {
    position: relative;
}

.search-input-wrapper input {
    width: 100%;
    padding: 0.875rem 1rem 0.875rem 2.5rem;
    border: 1px solid var(--gray-300);
    border-radius: 12px;
    font-size: 1rem;
    transition: all 0.2s ease;
    font-family: inherit;
}

.search-input-wrapper input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.search-input-wrapper i {
    position: absolute;
    left: 0.875rem;
    top: 50%;
    transform: translateY(-50%);
    color: var(--gray-500);
    pointer-events: none;
}

/* Grid Layout */
.resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
    width: 100%;
}

.library-container {
    display: grid;
    grid-template-columns: 1fr 280px;
    gap: 2rem;
    margin: 2rem 0;
}

.library-main {
    display: flex;
    flex-direction: column;
}

/* Loading and Empty States */
.loading-spinner {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 300px;
    color: var(--gray-500);
}

.spinner {
    border: 4px solid var(--gray-200);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    animation: spin 1s linear infinite;
    margin-right: 1rem;
}

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

.empty-state {
    text-align: center;
    padding: 3rem 1rem;
    color: var(--gray-500);
}

.empty-state-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
    opacity: 0.5;
}

.empty-state-text {
    font-size: 1.1rem;
    margin-bottom: 0.5rem;
}

/* Pagination */
.pagination-container {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--gray-200);
}

.pagination-info {
    font-size: 0.9rem;
    color: var(--gray-600);
}

.pagination-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--gray-300);
    background: white;
    border-radius: 8px;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.2s ease;
}

.pagination-btn:hover:not(:disabled) {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* Mobile Responsive */
@media (max-width: 768px) {
    .library-container {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .library-sidebar {
        position: static;
        margin-bottom: 2rem;
    }

    .resources-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 1rem;
    }

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

    .resource-meta {
        grid-template-columns: 1fr;
    }

    .resource-card-header {
        min-height: 70px;
        padding: 1rem;
    }

    .resource-card-title {
        font-size: 0.9rem;
    }

    .resource-card-actions {
        padding: 0.75rem 0;
    }

    .btn-view, .btn-download {
        padding: 0.4rem 0.5rem;
        font-size: 0.8rem;
    }
}

@media (max-width: 480px) {
    .resources-grid {
        grid-template-columns: 1fr;
    }

    .resource-card-header {
        min-height: 60px;
    }

    .resource-meta {
        gap: 0.5rem;
    }

    .resource-card-body {
        padding: 0.75rem;
    }

    .library-sidebar {
        padding: 1rem;
    }

    .sidebar-section {
        margin-bottom: 1.25rem;
    }
}

/* Header Navigation for Resource Links */
.resource-nav-links {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.resource-nav-link {
    padding: 0.5rem 1rem;
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    border-radius: 8px;
    text-decoration: none;
    color: var(--gray-900);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.resource-nav-link:hover {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

.resource-nav-link.active {
    background: var(--primary-color);
    color: white;
    border-color: var(--primary-color);
}

/* Tab Navigation */
.nav-tabs {
    display: flex;
    gap: 0.5rem;
    border-bottom: 2px solid var(--gray-200);
    margin-bottom: 2rem;
    overflow-x: auto;
}

.nav-tab {
    padding: 1rem 1.5rem;
    background: transparent;
    border: none;
    border-bottom: 3px solid transparent;
    color: var(--gray-600);
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.nav-tab:hover {
    color: var(--primary-color);
}

.nav-tab.active {
    color: var(--primary-color);
    border-bottom-color: var(--primary-color);
}