:root{font-family:system-ui,Avenir,Helvetica,Arial,sans-serif;line-height:1.5;font-weight:400;color-scheme:light dark;color:#ffffffde;background-color:#242424;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}a{font-weight:500;color:#646cff;text-decoration:inherit}a:hover{color:#535bf2}body{margin:0;display:flex;place-items:center;min-width:320px;min-height:100vh}h1{font-size:3.2em;line-height:1.1}button{border-radius:8px;border:1px solid transparent;padding:.6em 1.2em;font-size:1em;font-weight:500;font-family:inherit;background-color:#1a1a1a;cursor:pointer;transition:border-color .25s}button:hover{border-color:#646cff}button:focus,button:focus-visible{outline:4px auto -webkit-focus-ring-color}@media(prefers-color-scheme:light){:root{color:#213547;background-color:#fff}a:hover{color:#747bff}button{background-color:#f9f9f9}}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;display:flex;align-items:center;justify-content:center;padding:20px}.container{background:#fff;border-radius:16px;box-shadow:0 20px 60px #0000004d;padding:40px;max-width:500px;width:100%}h1{text-align:center;color:#333;margin-bottom:30px;font-size:28px}.upload-area{border:3px dashed #667eea;border-radius:12px;padding:40px 20px;text-align:center;cursor:pointer;transition:all .3s ease;background:#f8f9ff}.upload-area:hover{border-color:#764ba2;background:#f0f2ff}.upload-area.dragover{border-color:#764ba2;background:#e8ebff}.upload-area label{cursor:pointer;display:block}.upload-icon{font-size:48px;margin-bottom:15px}.upload-text{color:#666;font-size:16px}.upload-subtext{color:#999;font-size:14px;margin-top:8px}.preview{margin-top:20px;text-align:center}.preview img{max-width:100%;max-height:300px;border-radius:8px;box-shadow:0 4px 12px #0000001a}.btn-upload{display:block;width:100%;margin-top:20px;padding:14px;background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;border-radius:8px;font-size:16px;font-weight:600;cursor:pointer;transition:transform .2s ease}.btn-upload:hover:not(:disabled){transform:translateY(-2px)}.btn-upload:disabled{opacity:.6;cursor:not-allowed;transform:none}.result{margin-top:20px;padding:16px;border-radius:8px}.result.success{background:#d4edda;color:#155724;border:1px solid #c3e6cb}.result.error{background:#f8d7da;color:#721c24;border:1px solid #f5c6cb}.loading{display:flex;flex-direction:column;align-items:center;gap:10px;margin-top:20px}.spinner{border:4px solid #f3f3f3;border-top:4px solid #667eea;border-radius:50%;width:40px;height:40px;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}