.bluetooth-printer{display:flex;flex-direction:column;gap:25px}.section{padding:20px;background:#f8f9fa;border-radius:12px;border-left:4px solid #667eea}.section h2{margin-bottom:15px;color:#333;font-size:1.3rem}.section h3{margin-bottom:10px;color:#555;font-size:1.1rem}.btn{padding:12px 24px;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;box-shadow:0 2px 4px #0000001a}.btn:disabled{opacity:.6;cursor:not-allowed}.btn-primary{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.btn-primary:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 8px #667eea66}.btn-success{background:#28a745;color:#fff}.btn-success:hover:not(:disabled){background:#218838;transform:translateY(-2px)}.btn-danger{background:#dc3545;color:#fff}.btn-danger:hover:not(:disabled){background:#c82333;transform:translateY(-2px)}.btn-secondary{background:#6c757d;color:#fff}.btn-secondary:hover:not(:disabled){background:#5a6268;transform:translateY(-2px)}.btn-large{padding:15px 30px;font-size:1.1rem;width:100%;margin-bottom:20px}.device-list{display:flex;flex-direction:column;gap:12px}.device-item{display:flex;justify-content:space-between;align-items:center;padding:15px;background:#fff;border-radius:8px;box-shadow:0 2px 4px #0000001a}.device-info{display:flex;flex-direction:column;gap:5px}.device-info strong{color:#333;font-size:1rem}.device-id{color:#666;font-size:.85rem;font-family:monospace}.print-actions{display:flex;flex-direction:column;gap:20px}.custom-print{padding:20px;background:#fff;border-radius:8px;box-shadow:0 2px 4px #0000001a}.text-input{width:100%;padding:12px;border:2px solid #e0e0e0;border-radius:8px;font-size:1rem;font-family:inherit;resize:vertical;margin-bottom:12px;transition:border-color .3s ease}.text-input:focus{outline:none;border-color:#667eea}.status-message{padding:15px;border-radius:8px;background:#d4edda;color:#155724;border:1px solid #c3e6cb;text-align:center;font-weight:500}.status-message.error{background:#f8d7da;color:#721c24;border-color:#f5c6cb}.error-message{padding:20px;background:#fff3cd;color:#856404;border-radius:8px;border:1px solid #ffeaa7;text-align:center;font-weight:500;margin-bottom:20px}.info-section{padding:20px;background:#e7f3ff;border-radius:12px;border-left:4px solid #2196F3}.info-section h3{margin-bottom:15px;color:#1976d2}.info-section ul{list-style-position:inside;color:#555;line-height:1.8}.info-section li{margin-bottom:8px}@media (max-width: 768px){.device-item{flex-direction:column;align-items:flex-start;gap:12px}.device-item .btn{width:100%}}.pwa-install-prompt{position:fixed;bottom:20px;left:50%;transform:translate(-50%);z-index:1000;max-width:400px;width:calc(100% - 40px);animation:slideUp .3s ease-out}@keyframes slideUp{0%{transform:translate(-50%) translateY(100%);opacity:0}to{transform:translate(-50%) translateY(0);opacity:1}}.pwa-install-content{background:#fff;border-radius:12px;padding:20px;box-shadow:0 10px 40px #0000004d;display:flex;flex-direction:column;gap:15px;border:2px solid #667eea}.pwa-install-icon{font-size:3rem;text-align:center}.pwa-install-text{text-align:center}.pwa-install-text h3{margin:0 0 8px;color:#333;font-size:1.2rem}.pwa-install-text p{margin:0;color:#666;font-size:.9rem}.pwa-install-buttons{display:flex;gap:10px}.btn-install,.btn-dismiss{flex:1;padding:12px 20px;border:none;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease}.btn-install{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.btn-install:hover{transform:translateY(-2px);box-shadow:0 4px 8px #667eea66}.btn-dismiss{background:#f0f0f0;color:#666}.btn-dismiss:hover{background:#e0e0e0}@media (max-width: 768px){.pwa-install-prompt{bottom:10px;width:calc(100% - 20px)}.pwa-install-content{padding:15px}}.app{min-height:100vh}.app-header{text-align:center;color:#fff;padding:30px 20px;margin-bottom:30px}.app-header h1{font-size:2.5rem;margin-bottom:10px;text-shadow:2px 2px 4px rgba(0,0,0,.2)}.app-header p{font-size:1.1rem;opacity:.9}.app-main{background:#fff;border-radius:20px;padding:30px;box-shadow:0 10px 40px #0003}@media (max-width: 768px){.app-header h1{font-size:2rem}.app-main{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:800px;margin:0 auto}code{font-family:source-code-pro,Menlo,Monaco,Consolas,Courier New,monospace}