.app{background:#fff;border-radius:16px;box-shadow:0 20px 60px #0000004d;overflow:hidden}.header{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:30px;text-align:center}.header h1{font-size:2.5rem;margin-bottom:8px;font-weight:700}.subtitle{font-size:1rem;opacity:.9}.controls{display:flex;align-items:center;gap:20px;padding:20px 30px;background:#f8f9fa;border-bottom:1px solid #e9ecef;flex-wrap:wrap}.btn{padding:10px 20px;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s;display:inline-flex;align-items:center;gap:8px}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-refresh{background:#667eea;color:#fff}.btn-refresh:hover:not(:disabled){background:#5568d3;transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.btn-primary{background:#667eea;color:#fff}.btn-primary:hover{background:#5568d3;transform:translateY(-2px);box-shadow:0 4px 12px #667eea66}.btn-secondary{background:#6c757d;color:#fff}.btn-secondary:hover{background:#5a6268;transform:translateY(-2px);box-shadow:0 4px 12px #6c757d66}.auto-refresh-toggle{display:flex;align-items:center;gap:8px;cursor:pointer;-webkit-user-select:none;user-select:none}.auto-refresh-toggle input[type=checkbox]{width:18px;height:18px;cursor:pointer}.last-updated{margin-left:auto;color:#6c757d;font-size:.9rem}.error-banner{background:#f8d7da;color:#721c24;padding:15px 30px;border-bottom:1px solid #f5c6cb}.clipboard-info{background:#e7f3ff;border-bottom:1px solid #b3d9ff}.info-bar{display:flex;align-items:center;gap:20px;padding:15px 30px;flex-wrap:wrap}.status-badge{background:#28a745;color:#fff;padding:4px 12px;border-radius:20px;font-size:.85rem;font-weight:600}.main-content{padding:30px;min-height:400px}.empty-state{text-align:center;padding:80px 20px;color:#6c757d}.empty-state p:first-child{font-size:1.5rem;font-weight:600;margin-bottom:10px}.empty-hint{font-size:1rem;opacity:.7}.content-container{display:flex;flex-direction:column;gap:20px}.content-header{display:flex;flex-direction:column;gap:10px}.content-header h3{font-size:1.5rem;color:#333;margin:0}.metadata{display:flex;gap:20px;flex-wrap:wrap;color:#6c757d;font-size:.9rem}.metadata span{display:flex;align-items:center;gap:5px}.text-content{background:#f8f9fa;border:1px solid #e9ecef;border-radius:8px;padding:20px;max-height:500px;overflow-y:auto}.text-content pre{margin:0;font-family:Courier New,monospace;white-space:pre-wrap;word-break:break-word;line-height:1.6;font-size:.95rem}.image-content{background:#f8f9fa;border:1px solid #e9ecef;border-radius:8px;padding:20px;display:flex;justify-content:center;align-items:center;min-height:200px}.image-content img{max-width:100%;max-height:600px;border-radius:4px;box-shadow:0 2px 8px #0000001a}.file-content{background:#f8f9fa;border:1px solid #e9ecef;border-radius:8px;padding:40px;display:flex;flex-direction:column;align-items:center;gap:15px}.file-icon{font-size:4rem}.file-name{font-size:1.2rem;font-weight:600;color:#333;word-break:break-all;text-align:center}.action-buttons{display:flex;gap:15px;flex-wrap:wrap}.footer{background:#f8f9fa;padding:20px 30px;text-align:center;color:#6c757d;font-size:.9rem;border-top:1px solid #e9ecef}.upload-panel{background:#fff3cd;border-bottom:2px solid #ffc107;padding:30px}.upload-panel h3{margin-top:0;margin-bottom:25px;color:#333;font-size:1.5rem}.upload-section{background:#fff;padding:20px;border-radius:8px;margin-bottom:20px;border:1px solid #e9ecef}.upload-section:last-child{margin-bottom:0}.upload-section h4{margin-top:0;margin-bottom:15px;color:#495057;font-size:1.1rem}.upload-section textarea{width:100%;padding:12px;border:1px solid #ced4da;border-radius:6px;font-family:Courier New,monospace;font-size:.95rem;resize:vertical;margin-bottom:15px;box-sizing:border-box}.upload-section textarea:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}.upload-section textarea:disabled{background:#e9ecef;cursor:not-allowed}.upload-section label.btn{cursor:pointer}.upload-section label.btn.disabled{opacity:.5;cursor:not-allowed;pointer-events:none}.upload-hint{margin-top:10px;margin-bottom:0;color:#6c757d;font-size:.9rem}@media (max-width: 768px){.header h1{font-size:2rem}.controls{padding:15px 20px}.main-content{padding:20px}.last-updated{margin-left:0;width:100%}.upload-panel{padding:20px}}*{margin:0;padding:0;box-sizing:border-box}body{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;background:linear-gradient(135deg,#667eea,#764ba2);min-height:100vh;padding:20px}#root{max-width:900px;margin:0 auto}