* { margin: 0; padding: 0; box-sizing: border-box; }
body { font-family: sans-serif; background: #f0f4ff; color: #333; }
.container { max-width: 800px; margin: 40px auto; padding: 20px; background: white; border-radius: 16px; box-shadow: 0 4px 20px rgba(0,0,0,0.1); }
h1 { font-size: 28px; text-align: center; margin-bottom: 8px; }
.subtitle { text-align: center; color: #888; margin-bottom: 24px; }
.upload-area { border: 2px dashed #aaa; border-radius: 12px; padding: 30px; text-align: center; margin-bottom: 24px; cursor: pointer; }
.upload-area input { display: none; }
.upload-area span { font-size: 16px; color: #555; }
.preview-area { display: flex; gap: 16px; margin-bottom: 24px; }
.preview-box { flex: 1; border: 1px solid #ddd; border-radius: 12px; padding: 12px; text-align: center; }
.preview-box p { margin-bottom: 8px; color: #666; font-size: 13px; }
.preview-box img { width: 100%; max-height: 200px; object-fit: contain; border-radius: 8px; }
h2 { font-size: 16px; margin-bottom: 12px; }
.style-buttons { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 24px; }
.style-btn { padding: 10px 18px; border: 2px solid #ddd; border-radius: 30px; background: white; cursor: pointer; font-size: 14px; transition: all 0.2s; }
.style-btn:hover { border-color: #7c6fe0; color: #7c6fe0; }
.style-btn.selected { border-color: #7c6fe0; background: #7c6fe0; color: white; }
.convert-btn { width: 100%; padding: 14px; background: #7c6fe0; color: white; border: none; border-radius: 12px; font-size: 16px; cursor: pointer; transition: background 0.2s; }
.convert-btn:hover { background: #5a4fcf; }