@keyframes fadeIn {
            from { opacity: 0; transform: translateY(-10px); }
            to { opacity: 1; transform: translateY(0); }
        }
        .animate-fadeIn {
            animation: fadeIn 0.5s ease-out;
        }
        @keyframes float {
            0%, 100% { transform: translateY(0px); }
            50% { transform: translateY(-20px); }
        }
        .animate-float {
            animation: float 3s ease-in-out infinite;
        }
        @keyframes twinkle {
            0%, 100% { opacity: 1; }
            50% { opacity: 0.3; }
        }
        .star {
            position: absolute;
            width: 2px;
            height: 2px;
            background: white;
            border-radius: 50%;
            animation: twinkle 3s ease-in-out infinite;
        }
        body {
            background: linear-gradient(to bottom, #0a0e27 0%, #1a1a3e 50%, #2d1b4e 100%);
            position: relative;
            overflow-x: hidden;
        }
        .logo-card {
            transition: all 0.3s ease;
        }
        .logo-card:hover {
            transform: translateY(-10px);
            box-shadow: 0 20px 40px rgba(147, 51, 234, 0.3);
        }
        .modal {
            display: none;
            position: fixed;
            z-index: 100;
            left: 0;
            top: 0;
            width: 100%;
            height: 100%;
            background-color: rgba(0, 0, 0, 0.9);
        }
        .modal.active {
            display: flex;
            align-items: center;
            justify-content: center;
        }
        .modal-content {
            max-width: 90%;
            max-height: 90%;
            object-fit: contain;
        }
        .download-btn {
            position: relative;
            overflow: hidden;
        }
        .download-btn::before {
            content: '';
            position: absolute;
            top: 0;
            left: -100%;
            width: 100%;
            height: 100%;
            background: linear-gradient(90deg, transparent, rgba(255,255,255,0.2), transparent);
            transition: left 0.5s;
        }
        .download-btn:hover::before {
            left: 100%;
        }

	.back-button {
    position: fixed;
    top: 20px;
    left: 20px;
    background: linear-gradient(135deg, rgba(139, 92, 246, 0.9) 0%, rgba(99, 102, 241, 0.9) 100%);
    backdrop-filter: blur(10px);
    color: white;
    padding: 12px 24px;
    border-radius: 12px;
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    font-size: 14px;
    z-index: 1000;
    border: 1px solid rgba(139, 92, 246, 0.5);
    box-shadow: 0 4px 15px rgba(139, 92, 246, 0.4);
    transition: all 0.3s ease;
}

.back-button:hover {
    transform: translateX(-5px);
    box-shadow: 0 6px 20px rgba(139, 92, 246, 0.6);
}

.back-button svg {
    transition: transform 0.3s ease;
}

.back-button:hover svg {
    transform: translateX(-3px);
}