.btn {
        padding: 10px 20px;
        border: none;
        cursor: pointer;
        border-radius: 5px;
    }
    .btn-danger {
        background: #dc3545;
        color: white;
    }
    /* Animasi berkedip-kedip */
    @keyframes blink {
        0%, 100% { opacity: 1; }
        50% { opacity: 0.7; }
    }
    /* Animasi bersinar dengan drop-shadow */
    @keyframes glow {
        0%, 100% { filter: drop-shadow(0 0 10px #ff0) drop-shadow(0 0 20px #ff0); }
        50% { filter: drop-shadow(0 0 20px #ff0) drop-shadow(0 0 40px #ff0); }
    }
    /* Style untuk floating button */
    #floating-btn {
        position: fixed;
        top: 150px;
        right: 20px;
        border: none;
        background: none;
        cursor: pointer;
        z-index: 1000;
        padding: 0;
        border-radius: 50%;
        animation: blink 3s infinite;
    }
    #floating-btn img {
        width: 100px;
        height: 100px;
        border-radius: 50%;
        animation: glow 4s infinite;
    }
    /* Style untuk popup baru */
    #new-popup-container {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        width: 100%;
        height: 100%;
        background: rgba(0,0,0,0.5);
        z-index: 5000;
    }
    .new-popup-content {
        background: white;
        padding: 20px;
        margin: 15% auto;
        width: 80%;
        max-width: 500px;
        border-radius: 10px;
        text-align: center;
        position: relative;
    }
    .close-btn {
        position: absolute;
        top: 10px;
        right: 10px;
        font-size: 20px;
        background: none;
        border: none;
        cursor: pointer;
        color: #dc3545;
    }
    .nyalakan-btn {
        padding: 10px 20px;
        background: #28a745;
        color: white;
        border: none;
        border-radius: 5px;
        cursor: pointer;
        margin-top: 10px;
    }
    /* Style untuk countdown timer */
    #countdown {
        border: 1px solid #555;
        background: #faf6c7;
        color: #ff0000;
        font-size: 25px;
        font-weight: bold;
        margin: 10px auto;
        padding: 10px;
        width: 80%;
        max-width: 300px;
        border-radius: 5px;
    }
    /* Animasi untuk progress bar */
    .progress-anim {
        transition: width 1.5s ease-in-out;
    }