#loading-content{
            display: none;
        }
        #loading {
            position: fixed;
            top: 0;
            left: 0;
            width: 100vw;
            height: 100vh;
            background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
            display: flex;
            justify-content: center;
            align-items: center;
            flex-direction: column;
            z-index: 9999;
        }
        
        .loader {
            width: 80px;
            height: 80px;
            position: relative;
        }
        
        .loader-dot {
            position: absolute;
            width: 16px;
            height: 16px;
            background: #4f9fff;
            border-radius: 50%;
            animation: bounce 1.5s infinite ease-in-out;
        }
        
        .loader-dot:nth-child(1) {
            top: 0;
            left: 0;
            animation-delay: 0s;
        }
        
        .loader-dot:nth-child(2) {
            top: 0;
            right: 0;
            animation-delay: 0.2s;
        }
        
        .loader-dot:nth-child(3) {
            bottom: 0;
            right: 0;
            animation-delay: 0.4s;
        }
        
        .loader-dot:nth-child(4) {
            bottom: 0;
            left: 0;
            animation-delay: 0.6s;
        }
        
        .loading-text {
            margin-top: 30px;
            color: #4a6fa5;
            font-size: 18px;
            font-weight: 500;
            letter-spacing: 1px;
        }
        
        .progress-bar {
            width: 200px;
            height: 4px;
            background: rgba(79, 159, 255, 0.2);
            margin-top: 20px;
            border-radius: 2px;
            overflow: hidden;
        }
        
        .progress {
            height: 100%;
            width: 0;
            background: linear-gradient(90deg, #4f9fff, #0078d4);
            animation: progress 2s ease-in-out infinite;
        }
        
        @keyframes bounce {
            0%, 100% { transform: scale(0.8); opacity: 0.5; }
            50% { transform: scale(1.2); opacity: 1; }
        }
        
        @keyframes progress {
            0% { width: 0; margin-left: 0; }
            50% { width: 100%; margin-left: 0; }
            100% { width: 0; margin-left: 100%; }
        }