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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    background-color: #f5f5f7;
    color: #1d1d1f;
    line-height: 1.5;
}

.container {
    max-width: 1200px;
    margin: 2rem auto;
    padding: 0 1rem;
}

h1 {
    text-align: center;
    margin-bottom: 2rem;
    font-weight: 600;
}

.upload-container {
    text-align: center;
    margin-bottom: 2rem;
}

.upload-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background-color: #0071e3;
    color: white;
    border-radius: 8px;
    cursor: pointer;
    transition: background-color 0.2s;
}

.upload-button:hover {
    background-color: #0077ed;
}

.settings {
    text-align: center;
    margin-bottom: 2rem;
}

.settings label {
    display: inline-flex;
    align-items: center;
    gap: 1rem;
}

.preview-container {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2rem;
}

.preview-box {
    background: white;
    padding: 1rem;
    border-radius: 12px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.05);
}

.preview-box h3 {
    margin-bottom: 1rem;
    text-align: center;
}

.preview-box img {
    max-width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

.image-info {
    margin-top: 1rem;
    text-align: center;
    font-size: 0.9rem;
    color: #666;
}

.download-button {
    display: block;
    margin: 0 auto;
    padding: 0.75rem 2rem;
    background-color: #0071e3;
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1rem;
    transition: background-color 0.2s;
}

.download-button:disabled {
    background-color: #999;
    cursor: not-allowed;
}

.download-button:not(:disabled):hover {
    background-color: #0077ed;
}