:root{--primary-color: #4CAF50;--hover-color: #45a049;--error-color: #d32f2f;--border-color: #ddd;--background-color: #f5f5f5}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;max-width:1200px;margin:0 auto;padding:20px;background:var(--background-color);line-height:1.6}.container{background:#fff;padding:30px;border-radius:12px;box-shadow:0 2px 10px #0000001a}.header{text-align:center;margin-bottom:30px}.header h1{margin:0;color:#333;font-size:2.5em}.header p{color:#666;margin-top:10px}.upload-area{border:2px dashed var(--border-color);border-radius:8px;padding:40px 20px;text-align:center;margin-bottom:30px;cursor:pointer;transition:all .3s ease;background:#fff}.upload-area:hover,.upload-area.dragover{border-color:var(--primary-color);background:#e8f5e9}.upload-area p{margin:0;font-size:1.1em;color:#666}.button-group{margin:20px 0;text-align:center}.button{display:inline-block;padding:12px 24px;background:var(--primary-color);color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:1em;transition:background .3s ease;text-decoration:none;margin:0 10px}.button:hover{background:var(--hover-color)}.button:disabled{background:#ccc;cursor:not-allowed}.output-container{position:relative;margin-top:30px}.output{background:#2d2d2d;padding:20px;border-radius:8px;overflow-x:auto;font-family:Fira Code,monospace;line-height:1.5;max-height:600px;overflow-y:auto;color:#f8f8f2}.copy-button{position:absolute;top:10px;right:10px;background:#fff;border:1px solid var(--border-color);padding:8px 12px;border-radius:4px;cursor:pointer;display:none}.copy-button:hover{background:#f5f5f5}.filename{margin-top:10px;text-align:center;color:#666}.error{color:var(--error-color);padding:15px;background:#ffebee;border-radius:8px;margin-top:20px;border:1px solid #ffcdd2}.loading{display:none;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);background:#ffffffe6;padding:20px;border-radius:8px;box-shadow:0 2px 10px #0000001a}