/* Custom CSS for Mini Gallery */

:root {
    --primary-color: #007bff;
    --secondary-color: #6c757d;
    --success-color: #28a745;
    --danger-color: #dc3545;
    --warning-color: #ffc107;
    --info-color: #17a2b8;
    --light-color: #f8f9fa;
    --dark-color: #343a40;
    --border-radius: 8px;
    --box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    --transition: all 0.3s ease;
}

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

/* Navigation */
.navbar-brand {
    font-weight: 600;
    font-size: 1.5rem;
}

/* Sidebar */
.sidebar {
    position: sticky;
    top: 80px;
    height: calc(100vh - 100px);
    overflow-y: auto;
}

.sidebar .card {
    border: none;
    box-shadow: var(--box-shadow);
    border-radius: var(--border-radius);
}

.sidebar .card-header {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
    color: white;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    border: none;
}

.sidebar .card-header h5 {
    margin: 0;
    font-weight: 600;
}

/* Filter Groups */
.filter-group {
    margin-bottom: 1.5rem;
}

.filter-group h6 {
    color: var(--dark-color);
    font-weight: 600;
    margin-bottom: 0.75rem;
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.filter-btn {
    border-radius: var(--border-radius);
    margin-bottom: 0.5rem;
    transition: var(--transition);
    font-size: 0.9rem;
    padding: 0.5rem 1rem;
    text-align: left;
}

.filter-btn:hover {
    transform: translateX(5px);
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.filter-btn.active {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
    transform: translateX(5px);
}

/* Upload Area */
.upload-area {
    border: 2px dashed #dee2e6;
    border-radius: var(--border-radius);
    padding: 3rem 2rem;
    text-align: center;
    margin-bottom: 2rem;
    background: white;
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.upload-area:hover {
    border-color: var(--primary-color);
    background-color: #f8f9ff;
    transform: translateY(-2px);
    box-shadow: var(--box-shadow);
}

.upload-area.dragover {
    border-color: var(--success-color);
    background-color: #f8fff8;
    transform: scale(1.02);
}

.upload-content i {
    margin-bottom: 1rem;
    opacity: 0.7;
}

.upload-content h4 {
    color: var(--dark-color);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.upload-content p {
    color: var(--secondary-color);
    margin-bottom: 0.5rem;
}

/* Gallery Grid */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    gap: 1.5rem;
    margin-bottom: 2rem;
}

/* Media Item */
.media-item {
    background: white;
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--box-shadow);
    transition: var(--transition);
    cursor: pointer;
    position: relative;
    aspect-ratio: 1;
}

.media-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 5px 20px rgba(0,0,0,0.15);
}

.media-item img,
.media-item video {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.media-item:hover img,
.media-item:hover video {
    transform: scale(1.05);
}

/* Media Overlay */
.media-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 0%, rgba(0,0,0,0.7) 100%);
    opacity: 0;
    transition: var(--transition);
    display: flex;
    align-items: flex-end;
    padding: 1rem;
}

.media-item:hover .media-overlay {
    opacity: 1;
}

.media-info {
    color: white;
    width: 100%;
}

.media-info h6 {
    margin: 0;
    font-size: 0.9rem;
    font-weight: 600;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.media-info small {
    opacity: 0.8;
    font-size: 0.75rem;
}

/* Media Actions */
.media-actions {
    position: absolute;
    top: 0.5rem;
    right: 0.5rem;
    opacity: 0;
    transition: var(--transition);
}

.media-item:hover .media-actions {
    opacity: 1;
}

.media-actions .btn {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    padding: 0;
    margin-left: 0.25rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
}

/* Favorite Button */
.favorite-btn.favorited {
    background-color: var(--danger-color);
    border-color: var(--danger-color);
    color: white;
}

/* Video Play Button */
.video-play-btn {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60px;
    height: 60px;
    border-radius: 50%;
    background: rgba(0,0,0,0.7);
    border: none;
    color: white;
    font-size: 1.5rem;
    transition: var(--transition);
}

.video-play-btn:hover {
    background: rgba(0,0,0,0.9);
    transform: translate(-50%, -50%) scale(1.1);
}

/* Empty State */
.empty-state {
    padding: 3rem 2rem;
}

.empty-state i {
    opacity: 0.3;
}

.empty-state h4 {
    color: var(--secondary-color);
    margin-top: 1rem;
}

/* Modal */
.modal-content {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.modal-header {
    background: linear-gradient(135deg, var(--primary-color), #0056b3);
    color: white;
    border-radius: var(--border-radius) var(--border-radius) 0 0;
    border: none;
}

.modal-header .close {
    color: white;
    opacity: 0.8;
}

.modal-header .close:hover {
    opacity: 1;
}

/* Loading Spinner */
.spinner-border {
    width: 3rem;
    height: 3rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .sidebar {
        position: static;
        height: auto;
        margin-bottom: 2rem;
    }
    
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
        gap: 1rem;
    }
    
    .upload-area {
        padding: 2rem 1rem;
    }
    
    .upload-content h4 {
        font-size: 1.2rem;
    }
    
    .media-actions .btn {
        width: 28px;
        height: 28px;
        font-size: 0.7rem;
    }
}

@media (max-width: 576px) {
    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: 0.75rem;
    }
    
    .upload-area {
        padding: 1.5rem 0.5rem;
    }
    
    .upload-content h4 {
        font-size: 1rem;
    }
    
    .filter-btn {
        font-size: 0.8rem;
        padding: 0.4rem 0.8rem;
    }
}

/* Animation Classes */
.fade-in {
    animation: fadeIn 0.5s ease-in;
}

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

.slide-in {
    animation: slideIn 0.3s ease-out;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Custom Scrollbar */
.sidebar::-webkit-scrollbar {
    width: 6px;
}

.sidebar::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 3px;
}

.sidebar::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}

/* Utility Classes */
.text-truncate-2 {
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.shadow-sm {
    box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075) !important;
}

.shadow {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.15) !important;
}

.shadow-lg {
    box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.175) !important;
}