:root {
            --primary: #96a78d;
            --primary-dark: #7d8b75;
            --secondary: #4d9e89;
            --accent: #cff0f0;
            --dark: #3a3a3a;
            --darker: #2a2a2a;
            --light: #f0f0f0;
            --lighter: #f8f8f8;
            --text: #333333;
            --text-light: #666666;
            --card-bg: #ffffff;
            --header-bg: rgba(255, 255, 255, 0.95);
            --shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
            --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
            --radius: 12px;
            --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
        }
        .dark-mode {
            --primary: #b2c0a8;
            --primary-dark: #96a78d;
            --card-bg: #2a2a2a;
            --header-bg: rgba(42, 42, 42, 0.95);
            --text: #f0f0f0;
            --text-light: #cccccc;
            --light: #3a3a3a;
            --lighter: #4a4a4a;
            --shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
            --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.3);
        }
        * {
            margin: 0;
            padding: 0;
            box-sizing: border-box;
        }
        body {
            font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
            background-color: var(--lighter);
            color: var(--text);
            transition: var(--transition);
            line-height: 1.5;
            overflow-x: hidden;
        }
        /* Header */
        header {
            position: sticky;
            top: 0;
            padding: 16px 24px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background-color: var(--header-bg);
            backdrop-filter: blur(20px);
            z-index: 100;
            box-shadow: var(--shadow);
            transition: var(--transition);
        }
        .logo {
            font-size: 22px;
            font-weight: 800;
            background: linear-gradient(135deg, var(--primary), var(--secondary));
            -webkit-background-clip: text;
            -webkit-text-fill-color: transparent;
            display: flex;
            align-items: center;
            gap: 8px;
            letter-spacing: -0.5px;
        }
        .header-actions {
            display: flex;
            gap: 12px;
            align-items: center;
        }
        .nav-btn {
            background: var(--light);
            border: none;
            padding: 8px 16px;
            border-radius: 8px;
            display: flex;
            align-items: center;
            gap: 6px;
            cursor: pointer;
            transition: var(--transition);
            font-weight: 600;
            font-size: 14px;
            color: var(--primary);
        }
        .nav-btn:hover {
            background: var(--primary);
            color: white;
            transform: translateY(-1px);
        }
        .nav-btn.active {
            background: var(--primary);
            color: white;
        }
        .icon-btn {
            background: var(--light);
            border: none;
            width: 36px;
            height: 36px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
            font-size: 16px;
            color: var(--primary);
        }
        .icon-btn:hover {
            background: var(--primary);
            color: white;
            transform: translateY(-1px);
        }
        /* Mobile Search */
        .mobile-search-container {
            display: none;
            width: 100%;
            margin-top: 16px;
        }
        .mobile-search-box {
            display: flex;
            background: var(--card-bg);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
        }
        .mobile-search-input {
            flex: 1;
            padding: 10px 16px;
            border: none;
            background: transparent;
            font-size: 14px;
            outline: none;
            color: var(--text);
            font-weight: 500;
        }
        .mobile-search-btn {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white;
            border: none;
            padding: 0 16px;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 6px;
            font-weight: 600;
            font-size: 14px;
        }
        .mobile-search-btn:hover {
            background: linear-gradient(135deg, var(--primary-dark), var(--dark));
        }
        /* Search Popup */
        .search-popup {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(58, 58, 58, 0.95);
            z-index: 1000;
            overflow-y: auto;
            backdrop-filter: blur(10px);
        }
        .search-popup-content {
            max-width: 600px;
            margin: 60px auto;
            background-color: var(--card-bg);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
            animation: modalFadeIn 0.4s ease;
        }
        @keyframes modalFadeIn {
            from { opacity: 0; transform: translateY(30px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .search-popup-header {
            padding: 24px;
            border-bottom: 1px solid var(--light);
            display: flex;
            justify-content: space-between;
            align-items: center;
        }
        .search-popup-title {
            font-size: 22px;
            font-weight: 700;
        }
        .search-popup-body {
            padding: 24px;
        }
        .popup-search-box {
            display: flex;
            background: var(--light);
            border-radius: var(--radius);
            overflow: hidden;
            margin-bottom: 24px;
            box-shadow: var(--shadow);
        }
        .popup-search-input {
            flex: 1;
            padding: 14px 20px;
            border: none;
            background: transparent;
            font-size: 16px;
            outline: none;
            color: var(--text);
            font-weight: 500;
        }
        .popup-search-btn {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white;
            border: none;
            padding: 0 24px;
            cursor: pointer;
            transition: var(--transition);
            display: flex;
            align-items: center;
            gap: 8px;
            font-weight: 600;
        }
        .popup-search-btn:hover {
            background: linear-gradient(135deg, var(--primary-dark), var(--dark));
        }
        .tags-section {
            margin-bottom: 24px;
        }
        .tags-title {
            font-size: 16px;
            font-weight: 600;
            margin-bottom: 12px;
            color: var(--text);
        }
        .tags-dropdown {
            background: var(--light);
            border-radius: var(--radius);
            padding: 16px;
            max-height: 300px;
            overflow-y: auto;
        }
        .tag-item {
            display: flex;
            align-items: center;
            padding: 10px 14px;
            margin-bottom: 8px;
            background: var(--card-bg);
            border-radius: 8px;
            cursor: pointer;
            transition: var(--transition);
            font-weight: 500;
        }
        .tag-item:hover {
            background: var(--primary);
            color: white;
            transform: translateX(4px);
        }
        .tag-item:last-child {
            margin-bottom: 0;
        }
        .tag-icon {
            margin-right: 10px;
            width: 20px;
            text-align: center;
        }
        .search-popup-footer {
            padding: 16px 24px;
            border-top: 1px solid var(--light);
            text-align: right;
        }
        .close-search-btn {
            background: var(--light);
            color: var(--text);
            border: none;
            padding: 10px 20px;
            border-radius: 8px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
        }
        .close-search-btn:hover {
            background: var(--primary);
            color: white;
        }
        /* Categories */
        .categories-container {
            padding: 8px 24px;
            background: var(--header-bg);
            position: sticky;
            top: 64px;
            z-index: 90;
            overflow-x: auto;
            white-space: nowrap;
            scrollbar-width: thin;
            scrollbar-color: var(--primary) var(--light);
            transition: var(--transition);
        }
        .categories-container::-webkit-scrollbar {
            height: 4px;
        }
        .categories-container::-webkit-scrollbar-track {
            background: var(--light);
        }
        .categories-container::-webkit-scrollbar-thumb {
            background-color: var(--primary);
            border-radius: 2px;
        }
        .category-tag {
            display: inline-block;
            padding: 6px 14px;
            margin-right: 8px;
            background: var(--light);
            color: var(--text);
            border-radius: 20px;
            font-size: 13px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            border: 1px solid transparent;
        }
        .category-tag:hover, .category-tag.active {
            background: var(--primary);
            color: white;
            border-color: var(--primary-dark);
            transform: translateY(-1px);
        }
        /* Content - Masonry Grid */
        .content-feed {
            column-count: 6;
            column-gap: 16px;
            padding: 16px;
            max-width: 1600px;
            margin: 0 auto;
        }
        .content-card {
            background-color: var(--card-bg);
            border-radius: var(--radius);
            overflow: hidden;
            box-shadow: var(--shadow);
            margin-bottom: 16px;
            break-inside: avoid;
            transition: var(--transition);
            position: relative;
            cursor: pointer;
        }
        .content-card:hover {
            transform: translateY(-4px);
            box-shadow: var(--shadow-lg);
        }
        .content-media-container {
            width: 100%;
            position: relative;
            overflow: hidden;
            background: linear-gradient(45deg, var(--light), var(--lighter));
        }
        .content-media {
            width: 100%;
            height: 100%;
            display: block;
            transition: var(--transition);
            object-fit: cover;
        }
        .content-card:hover .content-media {
            transform: scale(1.03);
        }
        .favorite-btn {
            position: absolute;
            top: 12px;
            left: 12px;
            background: rgba(255, 255, 255, 0.9);
            backdrop-filter: blur(10px);
            color: var(--primary);
            width: 32px;
            height: 32px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            z-index: 2;
            border: none;
            transition: var(--transition);
            box-shadow: var(--shadow);
        }
        .favorite-btn:hover {
            background: white;
            transform: scale(1.1);
        }
        .favorite-btn.favorited {
            color: #ef4444;
            background: white;
        }
        .video-play-icon {
            position: absolute;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            font-size: 48px;
            color: rgba(255, 255, 255, 0.8);
            pointer-events: none;
            transition: opacity 0.3s ease;
        }
        .hover-video {
            position: absolute;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            object-fit: cover;
            opacity: 0;
            transition: opacity 0.3s ease;
        }
        .content-card:hover .hover-video {
            opacity: 1;
        }
        .content-card:hover .video-play-icon {
            opacity: 0;
        }
        .content-info {
            padding: 12px;
        }
        .content-title {
            font-weight: 600;
            margin-bottom: 4px;
            white-space: nowrap;
            overflow: hidden;
            text-overflow: ellipsis;
            font-size: 14px;
        }
        .content-description {
            font-size: 12px;
            color: var(--text-light);
            margin-bottom: 12px;
        }
        .content-meta {
            display: flex;
            justify-content: space-between;
            align-items: center;
            margin-bottom: 12px;
            font-size: 11px;
            color: var(--text-light);
        }
        .content-actions {
            display: flex;
            gap: 8px;
        }
        .download-btn, .view-btn {
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white;
            border: none;
            padding: 6px 12px;
            border-radius: 6px;
            font-weight: 600;
            cursor: pointer;
            font-size: 12px;
            display: flex;
            align-items: center;
            gap: 4px;
            transition: var(--transition);
        }
        .view-btn {
            background: var(--light);
            color: var(--primary);
        }
        .download-btn:hover, .view-btn:hover {
            transform: translateY(-1px);
        }
        
        /* Full Screen Preview Modal */
        .preview-modal {
            display: none;
            position: fixed;
            top: 0;
            left: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(42, 42, 42, 0.98);
            z-index: 2000;
            overflow: hidden;
        }
        .preview-container {
            width: 100%;
            height: 100%;
            display: flex;
            flex-direction: column;
        }
        .preview-header {
            position: absolute;
            top: 0;
            left: 0;
            right: 0;
            padding: 20px;
            display: flex;
            justify-content: space-between;
            align-items: center;
            background: linear-gradient(to bottom, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0) 100%);
            z-index: 10;
        }
        .preview-title {
            color: white;
            font-size: 18px;
            font-weight: 600;
            max-width: 70%;
            text-overflow: ellipsis;
            white-space: nowrap;
            overflow: hidden;
        }
        .preview-actions {
            display: flex;
            gap: 12px;
        }
        .preview-action-btn {
            background: rgba(255, 255, 255, 0.2);
            backdrop-filter: blur(10px);
            color: white;
            border: none;
            width: 40px;
            height: 40px;
            border-radius: 50%;
            display: flex;
            align-items: center;
            justify-content: center;
            cursor: pointer;
            transition: var(--transition);
        }
        .preview-action-btn:hover {
            background: rgba(255, 255, 255, 0.3);
            transform: scale(1.05);
        }
        .preview-action-btn.favorited {
            color: #ef4444;
        }
        .preview-media-container {
            flex: 1;
            display: flex;
            align-items: center;
            justify-content: center;
            position: relative;
            overflow: hidden;
        }
        .preview-media {
            max-width: 100%;
            max-height: 100%;
            object-fit: contain;
        }
        .preview-video {
            max-width: 90%;
            max-height: 90%;
            border-radius: 8px;
        }
        .preview-footer {
            position: absolute;
            bottom: 0;
            left: 0;
            right: 0;
            padding: 20px;
            background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, rgba(0,0,0,0) 100%);
            z-index: 10;
        }
        .preview-meta {
            display: flex;
            justify-content: center;
            gap: 24px;
            margin-bottom: 16px;
        }
        .preview-meta-item {
            display: flex;
            align-items: center;
            gap: 8px;
            color: white;
            font-size: 14px;
        }
        .preview-description {
            text-align: center;
            color: rgba(255, 255, 255, 0.8);
            font-size: 14px;
            max-width: 600px;
            margin: 0 auto;
        }
        .preview-download-btn {
            display: flex;
            align-items: center;
            justify-content: center;
            gap: 8px;
            background: linear-gradient(135deg, var(--primary), var(--primary-dark));
            color: white;
            border: none;
            padding: 12px 24px;
            border-radius: 30px;
            font-weight: 600;
            cursor: pointer;
            transition: var(--transition);
            margin: 0 auto;
        }
        .preview-download-btn:hover {
            transform: translateY(-2px);
            box-shadow: 0 10px 20px rgba(150, 167, 141, 0.3);
        }
        
        /* Loading */
        .loading-spinner {
            display: none;
            position: fixed;
            top: 50%;
            left: 50%;
            transform: translate(-50%, -50%);
            width: 50px;
            height: 50px;
            border: 4px solid rgba(150, 167, 141, 0.1);
            border-radius: 50%;
            border-top-color: var(--primary);
            animation: spin 1s linear infinite;
            z-index: 1000;
        }
        @keyframes spin {
            to { transform: translate(-50%, -50%) rotate(360deg); }
        }
        /* Toast */
        .toast {
            position: fixed;
            bottom: 80px;
            left: 50%;
            transform: translateX(-50%);
            background: var(--card-bg);
            color: var(--text);
            padding: 12px 20px;
            border-radius: 8px;
            box-shadow: var(--shadow-lg);
            z-index: 1000;
            display: flex;
            align-items: center;
            gap: 10px;
            font-weight: 600;
            font-size: 14px;
            animation: toastSlideUp 0.4s ease;
        }
        @keyframes toastSlideUp {
            from { opacity: 0; transform: translate(-50%, 20px); }
            to { opacity: 1; transform: translate(-50%, 0); }
        }
        /* Empty State */
        .empty-state {
            grid-column: 1 / -1;
            text-align: center;
            padding: 60px 20px;
            color: var(--text-light);
        }
        .empty-state i {
            font-size: 48px;
            margin-bottom: 16px;
            opacity: 0.5;
        }
        .empty-state h3 {
            font-size: 20px;
            margin-bottom: 8px;
            color: var(--text);
        }
        /* Responsive */
        @media (max-width: 1400px) {
            .content-feed {
                column-count: 5;
            }
        }
        @media (max-width: 1200px) {
            .content-feed {
                column-count: 4;
            }
        }
        @media (max-width: 992px) {
            .content-feed {
                column-count: 3;
            }
        }
        @media (max-width: 768px) {
            .content-feed {
                column-count: 2;
                padding: 12px;
                column-gap: 12px;
            }
            
            /* Mobile header adjustments */
            header {
                flex-direction: column;
                padding: 16px;
            }
            
            .logo {
                margin-bottom: 12px;
            }
            
            .header-actions {
                width: 100%;
                justify-content: space-between;
            }
            
            .nav-btn {
                padding: 6px 12px;
                font-size: 12px;
            }
            
            /* Show mobile search */
            .mobile-search-container {
                display: block;
            }
            
            /* Hide desktop search button */
            #search-popup-btn {
                display: none;
            }
            
            /* Adjust categories */
            .categories-container {
                top: 140px; /* Adjusted for mobile header */
                padding: 8px 16px;
            }
            
            /* Adjust preview modal for mobile */
            .preview-title {
                font-size: 16px;
                max-width: 60%;
            }
            
            .preview-meta {
                gap: 16px;
                flex-wrap: wrap;
            }
            
            .preview-meta-item {
                font-size: 12px;
            }
        }
        @media (max-width: 576px) {
            .content-feed {
                column-count: 2;
                padding: 8px;
                column-gap: 8px;
            }
            
            .logo {
                font-size: 18px;
            }
            
            header {
                padding: 12px;
            }
            
            .categories-container {
                padding: 6px 12px;
            }
            
            .content-card {
                margin-bottom: 8px;
            }
            
            .content-info {
                padding: 8px;
            }
            
            .content-title {
                font-size: 12px;
            }
            
            .content-description {
                font-size: 11px;
                margin-bottom: 8px;
            }
            
            .content-meta {
                font-size: 10px;
                margin-bottom: 8px;
            }
            
            .download-btn, .view-btn {
                padding: 4px 8px;
                font-size: 10px;
            }
            
            /* Mobile preview adjustments */
            .preview-header {
                padding: 16px;
            }
            
            .preview-action-btn {
                width: 36px;
                height: 36px;
            }
            
            .preview-footer {
                padding: 16px;
            }
            
            .preview-download-btn {
                padding: 10px 20px;
                font-size: 14px;
            }
        }
        /* Image protection */
        img {
            pointer-events: none;
            -webkit-user-select: none;
            -moz-user-select: none;
            -ms-user-select: none;
            user-select: none;
        }
        .ad-container {
            margin: 40px auto;
            text-align: center;
            padding: 0 24px;
            max-width: 1600px;
        }