* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    width: 100vw;
    height: 100vh;
    overflow: hidden; /* Non-scrollable */
    background-image: url('images/yz background.png');
    background-size: cover;
    background-position: center;
    background-repeat: no-repeat;
    background-attachment: fixed;
    position: relative;
}

/* About button container in top right */
.about-container {
    position: fixed;
    top: 20px;
    right: 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    z-index: 100;
}

.about-button {
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    transition: transform 0.2s ease;
}

.about-button:hover {
    transform: scale(1.1);
}

.owl-image {
    width: 80px;
    height: auto;
    display: block;
    filter: drop-shadow(4px 4px 8px rgba(0, 0, 0, 0.5));
}

.about-text {
    color: #bf5107;
    font-family: Arial, sans-serif;
    font-size: 16px;
    font-weight: bold;
    margin-top: 8px;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
}

/* Center logo */
.center-logo {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    z-index: 50;
}

.center-logo img {
    max-width: 90vw;
    max-height: 90vh;
    width: auto;
    height: auto;
    display: block;
    filter: drop-shadow(6px 6px 12px rgba(0, 0, 0, 0.6));
}

/* Modal/Pop-up */
.modal {
    display: none; /* Hidden by default */
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.7);
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.modal-content {
    position: relative;
    background-color: #fefefe;
    margin: 5% auto;
    padding: 0;
    border-radius: 8px;
    width: 80%;
    max-width: 700px;
    max-height: 80vh;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.5);
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        transform: translateY(-50px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.close-button {
    position: absolute;
    right: 15px;
    top: 10px;
    color: #aaa;
    font-size: 32px;
    font-weight: bold;
    cursor: pointer;
    transition: color 0.2s ease;
}

.close-button:hover,
.close-button:focus {
    color: #000;
}

.modal-content h2 {
    padding: 20px 30px;
    background-color: #f1f1f1;
    border-radius: 8px 8px 0 0;
    font-family: Arial, sans-serif;
    color: #333;
}

.modal-body {
    padding: 20px 30px;
    max-height: calc(80vh - 100px);
    overflow-y: auto; /* Scrollable content */
    font-family: Arial, sans-serif;
    color: #555;
    line-height: 1.6;
}

/* Responsive adjustments */
@media (max-width: 768px) {
    .modal-content {
        width: 90%;
        margin: 10% auto;
    }
    
    .owl-image {
        width: 60px;
    }
    
    .about-text {
        font-size: 14px;
    }
}