:root{--bg-primary: #0b0f19;--bg-secondary: #141b2d;--bg-tertiary: #1f2a45;--text-primary: #f3f4f6;--text-secondary: #9ca3af;--text-muted: #6b7280;--accent-color: #6366f1;--accent-color-rgb: 99, 102, 241;--accent-gradient: linear-gradient(135deg, #6366f1 0%, #3b82f6 50%, #06b6d4 100%);--success: #10b981;--error: #ef4444;--warning: #f59e0b;--border-color: rgba(255, 255, 255, .08);--border-focus: rgba(99, 102, 241, .5);--border-radius-lg: 16px;--border-radius-md: 10px;--border-radius-sm: 6px;--shadow-lg: 0 10px 30px -10px rgba(0, 0, 0, .5);--shadow-glow: 0 0 20px rgba(99, 102, 241, .2)}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-primary);color:var(--text-primary);font-family:Outfit,Plus Jakarta Sans,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;min-height:100vh;display:flex;justify-content:center;align-items:center;padding:20px;line-height:1.5;overflow-x:hidden}.app-container{width:100%;max-width:540px;display:flex;flex-direction:column;gap:20px;animation:fadeIn .6s ease-out}@keyframes fadeIn{0%{opacity:0;transform:translateY(15px)}to{opacity:1;transform:translateY(0)}}@keyframes pulse-glow{0%,to{box-shadow:0 0 10px #6366f133,0 0 30px #6366f11a}50%{box-shadow:0 0 20px #6366f166,0 0 50px #6366f133}}@keyframes scan-animation{0%{top:0%;opacity:.8}50%{top:100%;opacity:.8}to{top:0%;opacity:.8}}.app-header{text-align:center;margin-bottom:5px}.logo-container{display:flex;align-items:center;justify-content:center;gap:10px;margin-bottom:6px}.logo-icon{background:var(--accent-gradient);padding:10px;border-radius:var(--border-radius-md);display:flex;align-items:center;justify-content:center;color:#fff;box-shadow:var(--shadow-glow)}.app-header h1{font-size:2.2rem;font-weight:700;letter-spacing:-.5px}.app-header h1 span{background:var(--accent-gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.tagline{color:var(--text-secondary);font-size:.9rem;font-weight:400}.tabs-container{display:flex;background-color:var(--bg-secondary);border:1px solid var(--border-color);padding:6px;border-radius:var(--border-radius-lg);gap:6px}.tab-btn{flex:1;background:none;border:none;color:var(--text-secondary);padding:12px;font-size:.95rem;font-weight:500;border-radius:var(--border-radius-md);cursor:pointer;display:flex;align-items:center;justify-content:center;gap:8px;transition:all .3s cubic-bezier(.4,0,.2,1)}.tab-btn:hover{color:var(--text-primary);background-color:#ffffff08}.tab-btn.active{color:#fff;background:var(--accent-gradient);box-shadow:0 4px 15px #6366f140}.panes-container{position:relative}.pane{display:none;flex-direction:column;gap:16px}.pane.active{display:flex;animation:fadeIn .4s ease-out}.card{background-color:var(--bg-secondary);border:1px solid var(--border-color);border-radius:var(--border-radius-lg);padding:24px;box-shadow:var(--shadow-lg);display:flex;flex-direction:column;gap:16px}.dropzone-card{border:2px dashed rgba(99,102,241,.3);cursor:pointer;transition:all .3s ease;position:relative;overflow:hidden}.dropzone-card:hover,.dropzone-card.dragover{border-color:var(--accent-color);background-color:#6366f108}.hidden-input{display:none}.dropzone-content{display:flex;flex-direction:column;align-items:center;text-align:center;gap:8px;padding:10px 0}.dropzone-icon{color:var(--accent-color);margin-bottom:6px;background:#6366f11a;padding:12px;border-radius:50%;display:flex;align-items:center;justify-content:center}.dropzone-content h3{font-size:1.1rem;font-weight:600}.browse-link{color:var(--accent-color);font-weight:500;text-decoration:underline}.file-limits{font-size:.8rem;color:var(--text-muted)}.divider{display:flex;align-items:center;text-align:center;color:var(--text-muted);font-size:.75rem;font-weight:600;letter-spacing:1.5px}.divider:before,.divider:after{content:"";flex:1;border-bottom:1px solid var(--border-color)}.divider:not(:empty):before{margin-right:12px}.divider:not(:empty):after{margin-left:12px}.input-header{display:flex;justify-content:space-between;align-items:center}.input-header label{font-size:.85rem;font-weight:600;color:var(--text-secondary);text-transform:uppercase;letter-spacing:.5px}textarea{background-color:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--border-radius-md);color:var(--text-primary);padding:14px;font-family:inherit;font-size:.95rem;resize:vertical;min-height:110px;outline:none;transition:border-color .2s ease}textarea:focus{border-color:var(--border-focus)}.btn{border:none;font-family:inherit;font-size:.95rem;font-weight:600;padding:12px 20px;border-radius:var(--border-radius-md);cursor:pointer;transition:all .2s ease;display:inline-flex;align-items:center;justify-content:center;gap:8px}.btn-primary{background:var(--accent-gradient);color:#fff;box-shadow:0 4px 15px #6366f133}.btn-primary:hover{transform:translateY(-1px);box-shadow:0 6px 20px #6366f14d}.btn-secondary{background-color:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border-color)}.btn-secondary:hover{background-color:#ffffff0d}.btn-outline{background:none;border:1px solid var(--accent-color);color:var(--accent-color)}.btn-outline:hover{background-color:#6366f10d}.btn-block{width:100%}.btn-sm{padding:6px 12px;font-size:.8rem;border-radius:var(--border-radius-sm)}.btn-close{background:none;border:none;color:var(--text-secondary);font-size:1.5rem;cursor:pointer;padding:0 4px;display:flex;align-items:center;justify-content:center}.btn-close:hover{color:var(--text-primary)}.stream-card{animation:pulse-glow 3s infinite ease-in-out}.stream-header{display:flex;justify-content:space-between;align-items:center;border-bottom:1px solid var(--border-color);padding-bottom:12px}.stream-header h3{font-size:1.05rem;font-weight:600;text-overflow:ellipsis;overflow:hidden;white-space:nowrap;max-width:80%}.qr-display-area{background-color:#fff;padding:16px;border-radius:var(--border-radius-md);display:grid;gap:12px;justify-content:center;align-items:center;min-height:330px;width:100%}.qr-display-area.cols-1{grid-template-columns:1fr}.qr-display-area.cols-2{grid-template-columns:1fr 1fr}.qr-display-area.cols-3{grid-template-columns:repeat(3,1fr)}.qr-display-area.cols-4{grid-template-columns:1fr 1fr}.qr-canvas-item{width:100%!important;max-width:312px!important;height:auto!important;aspect-ratio:1;image-rendering:pixelated;border:1px solid #f3f4f6;border-radius:4px}.stream-progress-container,.receive-progress-panel{display:flex;flex-direction:column;gap:8px}.stream-stats,.progress-stats{display:flex;justify-content:space-between;font-size:.85rem;color:var(--text-secondary);font-weight:500}.progress-bar-outer{width:100%;height:8px;background-color:var(--bg-tertiary);border-radius:9999px;overflow:hidden}.progress-bar-inner{height:100%;background:var(--accent-gradient);border-radius:9999px;transition:width .15s ease-out}.stream-controls{display:flex;flex-direction:column;gap:16px}.control-row{display:flex;gap:10px}.control-row .btn-primary{flex:2}.control-row .btn-secondary{flex:1}.setting-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(120px,1fr));gap:16px;border-top:1px solid var(--border-color);padding-top:14px}.setting-item{display:flex;flex-direction:column;gap:6px}.setting-item label{font-size:.75rem;color:var(--text-secondary);font-weight:600;text-transform:uppercase}input[type=range]{-webkit-appearance:none;width:100%;height:6px;border-radius:9999px;background:var(--bg-tertiary);outline:none}input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:16px;height:16px;border-radius:50%;background:var(--accent-color);cursor:pointer;transition:transform .1s ease}input[type=range]::-webkit-slider-thumb:hover{transform:scale(1.2)}.scanner-card{gap:14px}.scanner-header{display:flex;justify-content:space-between;align-items:center}.camera-select-container{display:flex;align-items:center;gap:8px;flex:1}.camera-select-container label{font-size:.85rem;color:var(--text-secondary);font-weight:600}.select-input{background-color:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--border-radius-sm);color:var(--text-primary);padding:6px 10px;font-size:.85rem;outline:none;flex:1;max-width:180px}.video-viewport{position:relative;width:100%;aspect-ratio:4 / 3;background-color:#000;border-radius:var(--border-radius-md);overflow:hidden;border:1px solid var(--border-color)}#camera-video{width:100%;height:100%;object-fit:cover;transition:transform .3s ease}#camera-video.mirrored{transform:scaleX(-1)}.scanner-overlay{position:absolute;top:0;left:0;width:100%;height:100%;display:flex;flex-direction:column;align-items:center;justify-content:center;pointer-events:none}.scanner-reticle{width:180px;height:180px;border:2px solid rgba(255,255,255,.4);border-radius:12px;position:relative;box-shadow:0 0 0 9999px #0000008c}.scanner-reticle:before{content:"";position:absolute;top:0;left:0;width:100%;height:3px;background-color:var(--accent-color);box-shadow:0 0 8px var(--accent-color);animation:scan-animation 2.5s infinite ease-in-out}.scanner-instruction{position:absolute;bottom:12px;background-color:#0b0f19d9;color:#fff;padding:6px 14px;border-radius:9999px;font-size:.75rem;font-weight:500;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);border:1px solid rgba(255,255,255,.05)}.chunks-grid-container{display:flex;flex-direction:column;gap:8px;margin-top:6px}.grid-header{display:flex;justify-content:space-between;align-items:center}.grid-header label{font-size:.75rem;color:var(--text-secondary);font-weight:600;text-transform:uppercase;letter-spacing:.5px}.chunk-info-label{font-size:.75rem;color:var(--text-muted);font-weight:500;transition:color .2s ease}.chunks-grid{display:grid;grid-template-columns:repeat(10,1fr);gap:4px;max-height:100px;overflow-y:auto;background-color:var(--bg-tertiary);padding:8px;border-radius:var(--border-radius-sm);border:1px solid var(--border-color)}.chunk-box{aspect-ratio:1;border-radius:2px;background-color:#ffffff0d;border:1px solid rgba(255,255,255,.03);transition:all .2s ease;cursor:pointer}.chunk-box:hover{transform:scale(1.15);border-color:#6366f180;background-color:#ffffff1f}.chunk-box.received:hover{background-color:#059669}.chunk-box.received{background-color:var(--success);box-shadow:0 0 6px #10b98166}.result-card{align-items:center;text-align:center;animation:fadeIn .4s ease-out}.success-icon{color:var(--success);background-color:#10b9811a;padding:16px;border-radius:50%;display:flex;align-items:center;justify-content:center;margin-bottom:4px;box-shadow:0 0 20px #10b98126}.result-details{background-color:var(--bg-tertiary);border:1px solid var(--border-color);border-radius:var(--border-radius-md);padding:16px;width:100%;display:flex;flex-direction:column;gap:10px;text-align:left}.detail-row{display:flex;justify-content:space-between;font-size:.9rem}.detail-label{color:var(--text-secondary)}.detail-value{font-weight:600;word-break:break-all;max-width:70%}.text-preview-container{display:flex;flex-direction:column;gap:6px;margin-top:4px}.text-preview-label{font-size:.75rem;color:var(--text-secondary);font-weight:600}.text-preview{background-color:var(--bg-secondary);border:1px solid var(--border-color);padding:10px;border-radius:var(--border-radius-sm);font-family:monospace;font-size:.8rem;max-height:120px;overflow-y:auto;white-space:pre-wrap;word-break:break-all}.result-actions{width:100%;display:flex;flex-direction:column;gap:10px}.hidden{display:none!important}@media (max-width: 480px){body{padding:10px}.card{padding:16px}.app-header h1{font-size:1.8rem}.video-viewport{aspect-ratio:1}.scanner-reticle{width:160px;height:160px}}.app-footer{text-align:center;margin-top:10px;font-size:.8rem;color:var(--text-muted)}