.App{text-align:left;background:linear-gradient(135deg,#667eea,#764ba2);max-width:800px;margin:0}.App-header{background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:40px 20px;color:#fff;box-shadow:0 4px 6px #0000001a}.App-header h1{margin:0 0 10px;font-size:2.5rem;font-weight:700;text-shadow:2px 2px 4px rgba(0,0,0,.3)}.App-header p{margin:0;font-size:1.1rem;opacity:.9}.App-main{padding:10px;background:#fff}@media (prefers-reduced-motion: no-preference){.App-logo{animation:none}}.hex-converter{max-width:800px;margin:0 auto;padding:20px;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif}.upload-section{background:#f8f9fa;border:2px dashed #dee2e6;border-radius:12px;padding:40px 20px;text-align:center;margin-bottom:20px;transition:border-color .3s ease}.upload-section:hover{border-color:#007bff}.file-input-wrapper{margin-bottom:20px}.file-input{display:none}.file-input-label{display:inline-block;padding:12px 24px;background:#007bff;color:#fff;border-radius:8px;cursor:pointer;font-weight:500;transition:background-color .3s ease}.file-input-label:hover{background:#0056b3}.file-name{display:block;margin-top:10px;color:#28a745;font-weight:500}.process-btn{padding:12px 32px;background:#28a745;color:#fff;border:none;border-radius:8px;font-size:16px;font-weight:500;cursor:pointer;line-height:0;transition:background-color .3s ease}.process-btn:hover:not(:disabled){background:#1e7e34}.process-btn:disabled{background:#6c757d;cursor:not-allowed}.example-section{margin:20px 0;padding:15px;background:#fff3cd;border:1px solid #ffeaa7;border-radius:8px;text-align:center}.example-section p{margin:0 0 15px;color:#856404;font-weight:500}.example-buttons{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}.example-btn{padding:10px 20px;background:#ffc107;color:#212529;border:none;border-radius:6px;font-size:14px;font-weight:500;cursor:pointer;line-height:0;transition:background-color .3s ease}.example-btn:hover:not(:disabled){background:#e0a800}.example-btn:disabled{background:#6c757d;color:#fff;cursor:not-allowed}.example-download-btn{padding:10px 20px;background:#6f42c1;color:#fff;border:none;border-radius:6px;font-size:14px;font-weight:500;cursor:pointer;line-height:0;transition:background-color .3s ease}.example-download-btn:hover{background:#5a32a3}.error-message{background:#f8d7da;border:1px solid #f5c6cb;color:#721c24;padding:20px;border-radius:8px;margin-bottom:20px}.error-message h3{margin:0 0 10px;color:#721c24}.result-section{background:#d4edda;border:1px solid #c3e6cb;border-radius:8px;padding:20px;margin-bottom:20px}.image-info{margin-bottom:20px}.image-info h3{margin:0 0 15px;color:#155724}.image-info p{margin:5px 0;color:#155724}.preview-section{margin-bottom:20px;text-align:center}.preview-section h3{margin:0 0 15px;color:#155724}.preview-image{border:2px solid #c3e6cb;border-radius:8px;background:#fff;padding:10px}.download-btn{padding:12px 32px;background:#17a2b8;color:#fff;border:none;border-radius:8px;font-size:16px;font-weight:500;cursor:pointer;line-height:0;transition:background-color .3s ease;display:block;margin:0 auto}.download-btn:hover{background:#117a8b}.instructions{background:#e2e3e5;border-radius:8px;padding:20px;margin-top:20px}.instructions h3{margin:0 0 15px;color:#383d41}.instructions ol{margin:0 0 15px;padding-left:20px}.instructions li{margin-bottom:8px;color:#383d41;line-height:1.5}.instructions p{margin:0;color:#383d41;font-style:italic}.instructions code{background:#f8f9fa;padding:2px 6px;border-radius:4px;font-family:Courier New,monospace;font-size:14px}@media (max-width: 768px){.hex-converter{padding:10px}.upload-section{padding:20px 10px}.preview-image{max-width:100%;height:auto}.example-buttons{flex-direction:column;align-items:center}.example-btn,.example-download-btn{width:100%;max-width:250px;line-height:0}}body{margin:0;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}