* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, sans-serif;
}

html, body {
    height: 100%;
    width: 100%;
    overflow: hidden;
}

.center-container {
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    width: 100%;
    background-color: #f0f2f5;
}

.container {
    text-align: center;
    padding: 20px;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
    max-width: 90%;
}

.continue-btn {
    padding: 15px 30px;
    font-size: 1.5rem;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    transition: background-color 0.3s;
}

.continue-btn:hover {
    background-color: #45a049;
}

.video-container {
    width: 100%;
    max-width: 800px;
    padding: 20px;
}

.countdown {
    font-size: 1.5rem;
    font-weight: bold;
    margin-bottom: 20px;
    color: #d32f2f;
}

#player {
    margin: 0 auto;
    max-width: 100%;
}

.reward-page {
    background: linear-gradient(135deg, #6e45e2, #88d3ce);
    overflow: hidden;
}

.reward-title {
    font-size: 2.5rem;
    color: #d32f2f;
    margin-bottom: 20px;
    animation: bounce 1s infinite alternate;
}

.reward-text {
    font-size: 1.5rem;
    margin-bottom: 30px;
    color: #333;
}

.celebration-icon {
    font-size: 4rem;
    margin-top: 20px;
    animation: spin 4s infinite linear;
}

@keyframes bounce {
    from {
        transform: translateY(0px);
    }
    to {
        transform: translateY(-15px);
    }
}

@keyframes spin {
    from {
        transform: rotate(0deg);
    }
    to {
        transform: rotate(360deg);
    }
}

/* Media queries for responsive design */
@media (max-width: 768px) {
    .container {
        padding: 15px;
    }

    .continue-btn {
        padding: 10px 20px;
        font-size: 1.2rem;
    }

    .countdown {
        font-size: 1.2rem;
    }

    .reward-title {
        font-size: 2rem;
    }

    .reward-text {
        font-size: 1.2rem;
    }

    .celebration-icon {
        font-size: 3rem;
    }
}

/* Ensure the YouTube video is responsive */
@media (max-width: 640px) {
    #player iframe {
        height: 200px;
    }
}