*{margin:0;padding:0;box-sizing:border-box}:root{--blue: #2563eb;--blue-dark: #1d4ed8;--green: #16a34a;--green-bg: #dcfce7;--gray: #9ca3af;--gray-bg: #f1f5f9;--red: #dc2626;--amber: #f59e0b;--bg: #f8fafc;--card: #ffffff;--text: #1e293b;--text-light: #64748b;--radius: 12px}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}.app{min-height:100dvh;display:flex;flex-direction:column;max-width:600px;margin:0 auto}.header{padding:16px 20px;background:var(--blue);color:#fff}.header h1{font-size:18px;font-weight:600}.main{flex:1;padding:16px 16px 80px}.tabs{position:fixed;bottom:0;left:50%;transform:translate(-50%);width:100%;max-width:600px;display:flex;background:var(--card);border-top:1px solid #e2e8f0;padding-bottom:env(safe-area-inset-bottom)}.tab{flex:1;display:flex;flex-direction:column;align-items:center;gap:4px;padding:10px;border:none;background:none;color:var(--text-light);font-size:12px;cursor:pointer}.tab.active{color:var(--blue)}.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:12px 20px;border:none;border-radius:var(--radius);font-size:15px;font-weight:500;cursor:pointer;transition:opacity .15s}.btn:active{opacity:.8}.btn:disabled{opacity:.5;cursor:default}.btn-primary{background:var(--blue);color:#fff}.btn-primary:hover{background:var(--blue-dark)}.btn-secondary{background:var(--gray-bg);color:var(--text)}.btn-large{width:100%;padding:16px;font-size:17px}.btn-sm{padding:8px 14px;font-size:13px}.btn-mark{background:var(--green-bg);color:var(--green);margin-top:8px;font-size:13px;padding:6px 12px;border:none;border-radius:8px;cursor:pointer}.btn-row{display:flex;gap:12px;margin-top:16px}.btn-row .btn{flex:1}.scanner{display:flex;flex-direction:column;gap:16px}.scanner-idle{display:flex;flex-direction:column;align-items:center;gap:20px;padding:60px 20px;text-align:center}.scanner-icon{color:var(--blue)}.scanner-idle p{color:var(--text-light);font-size:15px}.scanner-camera{position:fixed;top:0;right:0;bottom:0;left:0;background:#000;z-index:1000;display:flex;flex-direction:column}.scanner-camera video{flex:1;object-fit:cover;min-height:0}.camera-controls{position:relative;z-index:1001;display:flex;align-items:center;justify-content:space-between;padding:20px 30px;padding-bottom:calc(20px + env(safe-area-inset-bottom));background:#000000b3;flex-shrink:0}.btn-capture{width:80px;height:80px;border-radius:50%;border:5px solid white;background:#ffffff4d;cursor:pointer;box-shadow:0 0 20px #ffffff4d}.btn-capture:active{background:#fff}.scanner-preview img,.result-photo{width:100%;border-radius:var(--radius);max-height:300px;object-fit:contain;background:var(--gray-bg)}.scanner-loading{display:flex;flex-direction:column;align-items:center;gap:16px;padding:60px}.spinner{width:40px;height:40px;border:3px solid var(--gray-bg);border-top-color:var(--blue);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.result-fields,.detail-fields{display:flex;flex-direction:column;gap:12px;background:var(--card);border-radius:var(--radius);padding:16px;border:1px solid #e2e8f0}.field label{display:block;font-size:12px;color:var(--text-light);text-transform:uppercase;letter-spacing:.05em;margin-bottom:2px}.field input{width:100%;padding:10px 12px;border:1px solid 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#e2e8f0;border-radius:var(--radius);font-size:15px;background:var(--card)}.scan-list{display:flex;flex-direction:column;gap:8px}.scan-card{background:var(--card);border-radius:var(--radius);padding:14px 16px;border:1px solid #e2e8f0;cursor:pointer;transition:box-shadow .15s}.scan-card:active{box-shadow:0 0 0 2px var(--blue)}.scan-card.used{opacity:.6}.scan-card-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}.scan-card-body{display:flex;flex-direction:column;gap:2px}.scan-brand{font-size:12px;color:var(--text-light);text-transform:uppercase}.scan-product{font-size:15px;font-weight:500}.scan-serial{font-family:monospace;font-size:14px;color:var(--blue)}.invoice-ref{font-size:12px;color:var(--text-light);margin-top:6px;display:block}.badge{display:inline-block;padding:3px 10px;border-radius:20px;font-size:12px;font-weight:600}.badge.available{background:var(--green-bg);color:var(--green)}.badge.used{background:var(--gray-bg);color:var(--gray)}.detail{display:flex;flex-direction:column;gap:16px}.detail-photo{width:100%;border-radius:var(--radius);max-height:300px;object-fit:contain;background:var(--gray-bg)}.detail-status{display:flex;justify-content:space-between;align-items:center}.btn-back{display:inline-flex;align-items:center;gap:6px;border:none;background:none;color:var(--blue);font-size:15px;cursor:pointer;padding:0}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000080;display:flex;align-items:center;justify-content:center;padding:20px;z-index:200}.modal{background:var(--card);border-radius:var(--radius);padding:24px;width:100%;max-width:400px;display:flex;flex-direction:column;gap:16px}.modal h3{font-size:18px}.empty{text-align:center;padding:40px;color:var(--text-light)}.error{color:var(--red);font-size:14px;text-align:center}.success-msg{color:var(--green);font-weight:600;font-size:18px}@media(min-width:640px){.app{border-left:1px solid #e2e8f0;border-right:1px solid #e2e8f0}}