/* Material Card Styles */
.material-card {
    transition: all 0.3s ease;
    cursor: pointer;
    border-radius: 20px !important;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.05);
    background: white;
    position: relative;
}

/* Top accent border */
.material-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(135deg, #3949ab 0%, #5c6bc0 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.material-card:hover::before {
    opacity: 1;
}

.material-card .card-header {
    border-radius: 20px 20px 0 0 !important;
    background: linear-gradient(to bottom, #ffffff 0%, #f8f9fa 100%);
    transition: all 0.3s ease;
}

.material-card:hover .card-header {
    background: linear-gradient(to bottom, #ffffff 0%, #f0f4ff 100%);
}

.material-card .card-footer {
    border-radius: 0 0 20px 20px !important;
}

.material-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(57, 73, 171, 0.15);
    border-color: rgba(57, 73, 171, 0.2);
}

.material-meta {
    font-size: 0.9rem;
    color: #6c757d;
}

.material-meta i {
    font-size: 1.1rem;
}

.material-badge {
    background: linear-gradient(135deg, #e8f0f5 0%, #f0f4ff 100%) !important;
    color: #2c3e50 !important;
    border: 1px solid #d0e0eb;
    border-radius: 25px !important;
    padding: 0.4rem 0.75rem !important;
    font-weight: 500 !important;
    font-size: 0.85rem !important;
    transition: all 0.3s ease;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.05);
}

.material-card:hover .material-badge {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    border-color: #c5d4e8;
}

.material-card .card-footer {
    border-top: none !important;
}

/* Material Card Header Title - Handle Long Titles */
.material-card .card-header {
    min-height: auto;
    padding: 0.75rem 1rem;
}

.material-card .card-header h5 {
    overflow: visible;
    word-wrap: break-word;
    word-break: break-word;
    -webkit-hyphens: auto;
    hyphens: auto;
    max-width: 100%;
    margin-right: 0.5rem; /* Space for bookmark button */
    line-height: 1.4;
    transition: color 0.3s ease;
    color: #2c3e50;
}

.material-card:hover .card-header h5 {
    color: #3949ab;
}

.material-card .card-header .bookmark-btn {
    flex-shrink: 0;
    margin-left: 0.5rem;
    align-self: flex-start; /* Align bookmark button to top */
}

/* Bookmark Button Styles */
.bookmark-btn {
    color: #6c757d;
    transition: all 0.2s ease;
    border: none;
    background: transparent;
    padding: 0;
    cursor: pointer;
    position: relative;
    z-index: 10;
    pointer-events: auto;
}

.bookmark-btn:hover {
    color: #3949ab;
    transform: scale(1.1);
}

.bookmark-btn.bookmarked {
    color: #3949ab;
}

.bookmark-btn.bookmarked:hover {
    color: #2d3a8b;
    transform: scale(1.15);
}

.bookmark-icon {
    transition: all 0.2s ease;
    pointer-events: none; /* Allow clicks to pass through to button */
}

.bookmark-btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(57, 73, 171, 0.25);
    border-radius: 4px;
}

/* Ensure bookmark button is clickable even when card has cursor pointer */
.material-card .bookmark-btn {
    cursor: pointer !important;
    pointer-events: auto !important;
}

/* Search Box */
.search-box {
    border-radius: 30px;
    padding-left: 20px;
    padding-right: 20px;
}

/* Autocomplete Dropdown */
.autocomplete-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: white;
    border: 1px solid #dee2e6;
    border-radius: 0.375rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    max-height: 300px;
    overflow-y: auto;
    z-index: 1000;
    margin-top: 4px;
}

.autocomplete-item {
    padding: 10px 20px;
    cursor: pointer;
    border-bottom: 1px solid #f0f0f0;
    transition: background-color 0.2s ease;
}

.autocomplete-item:last-child {
    border-bottom: none;
}

.autocomplete-item:hover,
.autocomplete-item.active {
    background-color: #f8f9fa;
    color: #3949ab;
}

.autocomplete-item .course-code {
    font-weight: 600;
    color: #3949ab;
}

.autocomplete-empty {
    padding: 10px 20px;
    color: #6c757d;
    font-style: italic;
    text-align: center;
}

/* RTL Support for Autocomplete */
html[dir="rtl"] .autocomplete-dropdown {
    left: auto;
    right: 0;
}

html[dir="rtl"] .autocomplete-item {
    text-align: right;
}

/* Search button icon centering */
.rtl-search-form button[type="submit"] {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    width: 40px !important;
    height: 38px !important;
    min-width: 40px !important;
    max-width: 40px !important;
    padding: 0 !important;
    border-radius: 25px !important;
    box-sizing: border-box !important;
    text-align: center !important;
}

.rtl-search-form button[type="submit"] i {
    margin: 0 !important;
    padding: 0 !important;
    line-height: 1 !important;
    font-size: 1rem !important;
    display: inline-block !important;
    vertical-align: middle !important;
    text-align: center !important;
    position: relative !important;
    left: 1px !important;
}

html[dir="rtl"] .rtl-search-form button[type="submit"] i {
    margin: 0 !important;
    padding: 0 !important;
    left: 1px !important;
}

/* Department dropdown active state */
.dropdown-item.active {
    background-color: #0d6efd !important;
    color: white !important;
}

.dropdown-item.active .badge {
    background-color: rgba(255, 255, 255, 0.3) !important;
    color: white !important;
}

.dropdown-item.active:hover {
    background-color: #0b5ed7 !important;
    color: white !important;
}

/* Enhanced Search Results Alert Styling */
.alert-info {
    background: linear-gradient(135deg, #e3f2fd 0%, #f8f9fa 100%) !important;
    border: 1px solid #e1f5fe !important;
    border-radius: 12px !important;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08) !important;
}

.alert-info .fas.fa-search {
    display: none !important;
}

.alert-info .alert-heading {
    color: #1976d2 !important;
    font-size: 1.25rem !important;
    font-weight: 600 !important;
}

.alert-info p {
    color: #6c757d !important;
    font-size: 0.95rem !important;
}

.alert-info .alert-link {
    color: #1976d2 !important;
    text-decoration: underline !important;
    font-weight: 500 !important;
}

.alert-info .btn-close {
    display: none !important;
}

/* File Icons */
.file-icon {
    font-size: 2.5rem;
    color: #1a237e;
    transition: all 0.3s ease;
    display: inline-block;
}

.material-card:hover .file-icon {
    transform: scale(1.15) translateY(-3px);
    filter: drop-shadow(0 4px 8px rgba(0, 0, 0, 0.15));
}

.file-pdf { color: #f44336; }
.file-word { color: #2196f3; }
.file-excel { color: #4caf50; }
.file-powerpoint { color: #ff9800; }
.file-image { color: #9c27b0; }
.file-archive { color: #795548; }
.file-code { color: #607d8b; }


.download-count {
    font-size: 0.9rem;
    color: #6c757d;
}

/* Document Preview Modal */
.document-preview-modal .modal-dialog {
    max-width: 95%;
    width: 95%;
    height: 95vh;
    margin: 2.5vh auto;
}

.document-preview-modal .modal-content {
    height: 100%;
    display: flex;
    flex-direction: column;
}

.document-preview-modal .modal-header,
.document-preview-modal .modal-footer {
    flex-shrink: 0;
    padding: 0.5rem 1rem;
}

.document-preview-modal .modal-body {
    padding: 0;
    flex: 1 1 auto;
    overflow: hidden;
    position: relative;
    background-color: #525659;
}

.pdf-viewer {
    width: 100%;
    height: 100%;
    display: block;
    border: none;
}

/* Card Actions */
.card-actions {
    display: flex;
    gap: 0.5rem;
}

.card-actions .btn {
    flex: 1;
}

/* Enhanced Button Styles */
.btn {
    border-radius: 25px !important;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-primary {
    background-color: #3949ab;
    border-color: #3949ab;
    box-shadow: 0 2px 4px rgba(57, 73, 171, 0.3);
}

.btn-primary:hover {
    background-color: #303f9f;
    border-color: #303f9f;
    box-shadow: 0 4px 8px rgba(57, 73, 171, 0.4);
    transform: translateY(-1px);
}

.btn-outline-primary {
    color: #3949ab;
    border-color: #3949ab;
}

.btn-outline-primary:hover {
    background-color: #3949ab;
    border-color: #3949ab;
    box-shadow: 0 2px 4px rgba(57, 73, 171, 0.3);
    transform: translateY(-1px);
}

.btn-outline-primary.active {
    background-color: #3949ab;
    border-color: #3949ab;
    color: white;
    box-shadow: 0 2px 4px rgba(57, 73, 171, 0.3);
}

.btn-outline-secondary {
    color: #5c6bc0;
    border-color: #5c6bc0;
}

.btn-outline-secondary:hover {
    background-color: #5c6bc0;
    border-color: #5c6bc0;
    box-shadow: 0 2px 4px rgba(92, 107, 192, 0.3);
    transform: translateY(-1px);
}

.btn-outline-danger {
    color: #f44336;
    border-color: #f44336;
}

.btn-outline-danger:hover {
    background-color: #f44336;
    border-color: #f44336;
    box-shadow: 0 2px 4px rgba(244, 67, 54, 0.3);
    transform: translateY(-1px);
}

.card-footer .btn-primary {
    padding: 0.5rem 1rem;
    border-radius: 25px !important;
    font-weight: 600;
    letter-spacing: 0.3px;
}

.card-actions .btn {
    padding: 0.4rem 0.75rem;
    border-radius: 25px !important;
    transition: all 0.3s ease;
}

.card-actions .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

/* RTL Support */
html[dir="rtl"] .search-form.d-flex {
    flex-direction: row !important;
    display: flex !important;
}

html[dir="rtl"] .search-form .search-box {
    margin-right: 0 !important;
    margin-left: 0.5rem !important;
}

html[dir="rtl"] .btn-close {
    margin-left: 0;
    left: 1rem;
    right: auto;
}

html[dir="rtl"] .modal-header .btn-close.position-absolute {
    left: 1rem;
    right: auto;
}

html[dir="rtl"] .modal-footer {
    flex-direction: row-reverse;
}

html[dir="rtl"] .fas.me-2 {
    margin-right: 0 !important;
    margin-left: 0.5rem !important;
}

html[dir="rtl"] .fas.me-1 {
    margin-right: 0 !important;
    margin-left: 0.25rem !important;
}

/* RTL Support for Material Card Title */
html[dir="rtl"] .material-card .card-header h5 {
    margin-right: 0;
    margin-left: 0.5rem; /* Space for bookmark button */
}

html[dir="rtl"] .material-card .card-header .bookmark-btn {
    margin-left: 0;
    margin-right: 0.5rem;
}

/* Department Filter Styling */
.btn-group.flex-wrap {
    gap: 0.5rem;
}

.btn-group.flex-wrap .btn {
    margin-bottom: 0.5rem;
    transition: all 0.3s ease;
}

.btn-group.flex-wrap .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.1);
}

.btn-group.flex-wrap .btn.active {
    background-color: #3949ab !important;
    border-color: #3949ab !important;
    color: white !important;
    box-shadow: 0 4px 12px rgba(57, 73, 171, 0.3);
}

/* Auto-hide Animation */
.alert-success.auto-hide {
    animation: fadeOut 0.5s ease-in-out 3s forwards;
}

@keyframes fadeOut {
    from {
        opacity: 1;
        transform: translateY(0);
    }
    to {
        opacity: 0;
        transform: translateY(-10px);
        height: 0;
        margin: 0;
        padding: 0;
        overflow: hidden;
    }
}

.material-card[data-department] {
    transition: all 0.3s ease;
}

/* Mobile Styles */
@media (max-width: 768px) {
    .btn-group.flex-wrap .btn {
        font-size: 0.875rem;
        padding: 0.375rem 0.75rem;
    }
    
    .btn-group.flex-wrap .btn i {
        display: none;
    }
    
    .mobile-pagination-btn {
        width: 40px;
        height: 40px;
        border-radius: 50%;
        padding: 0;
        border: 2px solid #dee2e6;
        background-color: white;
        transition: all 0.2s ease;
        display: flex;
        align-items: center;
        justify-content: center;
    }
    
    .mobile-pagination-btn i {
        font-size: 16px;
        line-height: 1;
        margin: 0;
        padding: 0;
        display: block;
        transform: translateX(-3px);
    }
    
    .mobile-pagination-btn:hover:not(:disabled) {
        background-color: #3949ab;
        border-color: #3949ab;
        color: white;
        transform: scale(1.05);
    }
    
    .mobile-pagination-btn:disabled {
        opacity: 0.5;
        cursor: not-allowed;
    }
    
    #materials-content {
        transition: opacity 0.3s ease-in-out;
    }
    
    .pagination a, .mobile-pagination-btn {
        transition: all 0.2s ease-in-out;
    }
    
    .mobile-page-info {
        background-color: #f8f9fa;
        border: 2px solid #dee2e6;
        border-radius: 20px;
        padding: 8px 16px;
        font-weight: 600;
        font-size: 0.9rem;
        color: #495057;
        min-width: 60px;
        text-align: center;
        white-space: nowrap;
    }
    
    .form-select-sm {
        font-size: 0.8rem;
        padding: 0.25rem 0.5rem;
    }
    
    .form-label {
        font-size: 0.85rem;
        font-weight: 500;
    }
}