body {
            margin: 0;
            overflow: hidden;
            background: #000;
            font-family: monospace;
            cursor: pointer;
        }
        #birthday-text {
            position: absolute;
            width: 100%;
            text-align: center;
            top: 50%;
            transform: translateY(-50%);
            color: #fff;
            z-index: 1;
            pointer-events: none;
        }
        .message {
            font-size: 40px;
            text-shadow: 0 0 10px #fff, 0 0 20px #ff00ff;
            animation: pulse 2s ease-in-out infinite;
            margin-bottom: 20px;
        }
        .cake {
            white-space: pre;
            font-size: 20px;
            animation: rainbow 5s linear infinite;
        }
        #instructions {
            position: absolute;
            bottom: 20px;
            left: 20px;
            color: #fff;
            font-size: 14px;
            z-index: 2;
        }
        @keyframes pulse {
            0%, 100% { transform: scale(1); }
            50% { transform: scale(1.1); }
        }
        @keyframes rainbow {
            0% { color: #ff0000; }
            20% { color: #ffff00; }
            40% { color: #00ff00; }
            60% { color: #00ffff; }
            80% { color: #ff00ff; }
            100% { color: #ff0000; }
        }
        canvas {
            position: fixed;
            top: 0;
            left: 0;
        }

 #countdown {
            position: absolute;
            width: 100%;
            text-align: center;
            top: 75%;
            color: #fff;
            z-index: 1;
            pointer-events: none;
            display: flex;
            justify-content: center;
            gap: 20px;
            font-family: 'Courier New', monospace;
        }
        .time-unit {
            display: flex;
            flex-direction: column;
            align-items: center;
            min-width: 100px;
        }
        .number {
            font-size: 48px;
            font-weight: bold;
            color: #00ffff;
            text-shadow: 0 0 10px #00ffff;
            animation: glow 1s ease-in-out infinite alternate;
        }
        .label {
            font-size: 20px;
            color: #fff;
            text-transform: uppercase;
            margin-top: 5px;
        }
        
        #music-icon {
            position: fixed;
            top: 20px;
            right: 20px;
            width: 50px;
            height: 50px;
            font-size: 30px;
            display: flex;
            align-items: center;
            justify-content: center;
            background-color: white;
            border-radius: 50%;
            box-shadow: 0 0 10px rgba(0, 0, 0, 0.2);
            cursor: pointer;
            user-select: none;
        }