:root{--primary-color: #6366f1;--primary-hover: #4f46e5;--background-color: #f8fafc;--card-background: #ffffff;--text-color: #1e293b;--error-color: #ef4444;--success-color: #22c55e;--border-radius: 12px;--shadow: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--background-color);color:var(--text-color);line-height:1.5;-webkit-font-smoothing:antialiased}.container{max-width:600px;margin:0 auto;padding:2rem 1rem}h1{font-size:1.875rem;font-weight:700;text-align:center;margin-bottom:2rem;color:var(--text-color)}.input-group{display:flex;gap:.5rem;margin-bottom:1.5rem}input{flex:1;padding:.75rem 1rem;border:2px solid #e2e8f0;border-radius:var(--border-radius);font-size:1rem;transition:border-color .15s ease}input:focus{outline:none;border-color:var(--primary-color)}button{background-color:var(--primary-color);color:#fff;border:none;padding:.75rem 1.5rem;border-radius:var(--border-radius);font-weight:600;cursor:pointer;transition:background-color .15s ease;font-size:1rem}button:hover{background-color:var(--primary-hover)}button:disabled{opacity:.7;cursor:not-allowed}.progress-bar{width:100%;height:8px;background-color:#e2e8f0;border-radius:999px;overflow:hidden;margin:1rem 0}#progressBar{height:100%;background-color:var(--primary-color);width:0;transition:width .2s ease}.result-card{background-color:var(--card-background);padding:1.5rem;border-radius:var(--border-radius);box-shadow:var(--shadow);margin-top:1.5rem}.result-card h2{font-size:1.25rem;margin-bottom:1rem;color:var(--text-color)}#metadataContainer{margin-bottom:1rem;font-size:.875rem;color:#64748b}#metadataContainer p{margin-bottom:.5rem}.link-container{display:flex;gap:.75rem;flex-wrap:wrap}#downloadLink{display:inline-block;background-color:var(--success-color);color:#fff;text-decoration:none;padding:.75rem 1.5rem;border-radius:var(--border-radius);font-weight:600;flex:1;text-align:center;min-width:140px}#copyBtn,#shareBtn{flex:1;min-width:140px}.hidden{display:none}#errorContainer{background-color:#fef2f2;border:1px solid #fee2e2;color:var(--error-color);padding:1rem;border-radius:var(--border-radius);margin-top:1rem}#loadingText{text-align:center;color:#64748b;margin-top:.5rem}#initialLoadingContainer{text-align:center;margin:2rem 0}.loading-spinner{width:40px;height:40px;margin:0 auto 1rem;border:3px solid var(--background-color);border-radius:50%;border-top-color:var(--primary-color);animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}#initialLoadingContainer p{color:var(--text-color);font-size:1rem}#userContainer{margin:2rem 0}#userContainer button{width:100%;max-width:400px;margin:0 auto;display:block}.limitations{text-align:center;margin-top:1rem;color:#64748b;font-size:.875rem}.limitations p{margin:.25rem 0}@media (max-width: 480px){.container{padding:1rem}h1{font-size:1.5rem}.input-group{flex-direction:column}button{width:100%}.link-container{flex-direction:column}#downloadLink,#copyBtn,#shareBtn{width:100%}}