:root {
    --primary-color: #007ced;
    --secondary-color: #ffffff;
    --text-color: #333;
}

body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: var(--primary-color);
    color: var(--secondary-color);
    text-align: center;
}

h1 {
    margin: 20px;
    font-size: 2.5em;
    text-transform: uppercase;
    font-weight: bold;
}

.btn-voltar {
    position: fixed;
    top: 20px;
    left: 20px;
    background-color: var(--primary-color);
    color: #fff;
    padding: 10px 20px;
    border-radius: 5px;
    text-decoration: none;
    font-size: 16px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.2);
    z-index: 1000;
}

.wallpaper-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 20px;
    margin: 20px;
}

.wallpaper-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: #fff;
    border: 1px solid #ddd;
    border-radius: 8px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s;
}

.wallpaper-item:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 12px rgba(0, 0, 0, 0.2);
}

.wallpaper {
    max-width: 300px;
    max-height: 200px;
    object-fit: cover;
    cursor: pointer;
}

.download-btn {
    display: inline-block;
    margin: 10px;
    padding: 10px 20px;
    background-color: var(--primary-color);
    color: var(--secondary-color);
    border-radius: 5px;
    text-decoration: none;
    font-size: 14px;
    font-weight: bold;
    transition: background-color 0.3s;
}

.download-btn:hover {
    background-color: #005bb5;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0, 0, 0, 0.9);
}

.modal-content {
    display: block;
    margin: auto;
    max-width: 90%;
    max-height: 90%;
}

.close {
    position: absolute;
    top: 20px;
    right: 35px;
    color: #fff;
    font-size: 40px;
    font-weight: bold;
    cursor: pointer;
}