body {
            font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
            margin: 0;
            padding: 0;
            display: flex;
            justify-content: center;
            align-items: center;
            min-height: 100vh;
            background: linear-gradient(to right, #f0f2f5, #e7e9ec);
            overflow: hidden;
        }
        .container {
            text-align: center;
            animation: slideIn 1s ease;
        }
        @keyframes slideIn {
            from {
                opacity: 0;
                transform: translateY(-50px);
            }
            to {
                opacity: 1;
                transform: translateY(0);
            }
        }
        h1 {
            color: #333;
            font-size: 48px;
            margin-bottom: 30px;
            text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
        }
        .button {
            display: inline-block;
            padding: 20px 40px;
            font-size: 20px;
            background: linear-gradient(to right, #4CAF50, #2E8B57);
            color: white;
            border: none;
            cursor: pointer;
            border-radius: 50px;
            margin: 10px;
            text-decoration: none;
            transition: transform 0.3s ease, box-shadow 0.3s ease;
            box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
            overflow: hidden;
            position: relative;
            z-index: 1;
        }
        .button:before {
            content: '';
            position: absolute;
            top: 0;
            left: 50%;
            width: 300%;
            height: 100%;
            background: linear-gradient(to right, rgba(255,255,255,0.1), rgba(255,255,255,0.3), rgba(255,255,255,0.1));
            border-radius: 50%;
            transition: all 0.3s ease;
            z-index: -1;
            transform: translateX(-50%) scale(0);
        }
        .button:hover:before {
            transform: translateX(-50%) scale(1);
        }
        .button:hover {
            transform: translateY(-5px);
            box-shadow: 0 25px 50px rgba(0, 0, 0, 0.2);
        }
        .button:active {
            transform: translateY(3px);
            box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
        }