body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 20px;
    background-color: #f0f0f0;
}

.container {
    max-width: 1000px;
    margin: 0 auto;
    text-align: center;
}

.upload-area {
    border: 2px dashed #ccc;
    border-radius: 10px;
    padding: 40px;
    margin: 20px 0;
    background-color: white;
    cursor: pointer;
}

.upload-area.dragover {
    border-color: #4CAF50;
    background-color: #e8f5e9;
}

.upload-button {
    display: inline-block;
    padding: 10px 20px;
    background-color: #4CAF50;
    color: white;
    border-radius: 5px;
    cursor: pointer;
}

.preview-area {
    margin-top: 20px;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 20px 0;
}

.preview-item {
    background-color: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.preview-item img {
    display: block;
    margin: 0 auto 15px;
    border: 1px solid #ddd;
    padding: 5px;
    background: #fff;
}

.preview-item h3 {
    margin: 0 0 15px 0;
    color: #333;
}

.download-button {
    padding: 8px 15px;
    background-color: #2196F3;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
}

.download-button:hover {
    background-color: #1976D2;
}

.download-all-button {
    padding: 10px 20px;
    background-color: #4CAF50;
    color: white;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    margin-top: 20px;
}

.download-all-button:hover {
    background-color: #388E3C;
}

.size-selector {
    margin: 20px 0;
    padding: 15px;
    background-color: white;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0,0,0,0.1);
}

.checkbox-label {
    display: inline-block;
    margin: 0 15px;
    cursor: pointer;
    user-select: none;
}

.checkbox-label input[type="checkbox"] {
    margin-right: 5px;
    transform: scale(1.2);
}