:root{--bg-primary: #0f0f1a;--bg-secondary: #1a1a2e;--bg-card: #16213e;--text-primary: #e8e8e8;--text-secondary: #a0a0b0;--accent: #6c63ff;--accent-hover: #5a52e0;--success: #4ade80;--danger: #f87171;--warning: #fbbf24;--radius: 16px;--radius-sm: 8px;--safe-top: env(safe-area-inset-top, 0px);--safe-bottom: env(safe-area-inset-bottom, 0px)}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;overflow:hidden}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg-primary);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;touch-action:manipulation;user-select:none;-webkit-user-select:none}#app{height:100%;width:100%}.page{display:flex;flex-direction:column;height:100%;padding:calc(20px + var(--safe-top)) 20px calc(20px + var(--safe-bottom));overflow-y:auto;-webkit-overflow-scrolling:touch}.btn{display:inline-flex;align-items:center;justify-content:center;padding:14px 28px;border:none;border-radius:var(--radius-sm);font-size:16px;font-weight:600;cursor:pointer;transition:all .2s ease;outline:none;-webkit-tap-highlight-color:transparent}.btn.primary{background:var(--accent);color:#fff}.btn.primary:hover,.btn.primary:active{background:var(--accent-hover)}.btn.primary:active{transform:scale(.98)}.btn.secondary{background:transparent;color:var(--text-secondary);border:1px solid rgba(255,255,255,.1)}.btn.secondary:hover{border-color:#fff3}.btn.large{width:100%;padding:18px;font-size:18px;border-radius:var(--radius)}.back-btn{background:none;border:none;color:var(--text-secondary);cursor:pointer;padding:8px;margin:-8px -8px 12px;width:40px;-webkit-tap-highlight-color:transparent}.home-page{justify-content:center;align-items:center;gap:48px}.logo{text-align:center}.logo-icon{color:var(--accent);margin-bottom:16px}.logo h1{font-size:36px;font-weight:700;letter-spacing:-.5px}.subtitle{color:var(--text-secondary);font-size:16px;margin-top:8px}.role-selection{display:flex;gap:16px;width:100%;max-width:400px}.role-btn{flex:1;display:flex;flex-direction:column;align-items:center;gap:12px;padding:28px 16px;background:var(--bg-card);border:2px solid transparent;border-radius:var(--radius);cursor:pointer;transition:all .2s ease;color:var(--text-primary);-webkit-tap-highlight-color:transparent}.role-btn:hover,.role-btn:active{border-color:var(--accent);background:#6c63ff1a}.role-btn:active{transform:scale(.97)}.role-icon{color:var(--accent)}.role-title{font-size:20px;font-weight:600}.role-desc{font-size:13px;color:var(--text-secondary);text-align:center;line-height:1.4}.pair-page{gap:20px}.pair-content{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:32px;text-align:center}.pair-content h2{font-size:24px}.pair-instructions{color:var(--text-secondary);font-size:15px;max-width:280px}.pair-code-display{padding:24px;width:100%;max-width:340px}.code-digits{display:flex;justify-content:center;gap:8px}.digit{display:flex;align-items:center;justify-content:center;width:48px;height:64px;background:var(--bg-card);border-radius:var(--radius-sm);font-size:32px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--accent)}.code-hint{color:var(--text-secondary);font-size:14px;margin-top:16px}.pair-code-input{display:flex;flex-direction:column;gap:16px;width:100%;max-width:300px}.pair-code-input input{width:100%;padding:16px;background:var(--bg-card);border:2px solid rgba(255,255,255,.1);border-radius:var(--radius-sm);color:var(--text-primary);font-size:32px;font-weight:700;text-align:center;letter-spacing:12px;outline:none;font-variant-numeric:tabular-nums}.pair-code-input input:focus{border-color:var(--accent)}.pair-code-input input::placeholder{color:#ffffff26;letter-spacing:12px}.pair-status{min-height:24px;font-size:15px}.status-success{color:var(--success)}.status-error{color:var(--danger)}.status-connecting{display:flex;align-items:center;gap:8px;color:var(--text-secondary)}.connecting-indicator{display:flex;align-items:center;gap:12px;color:var(--text-secondary)}.spinner{width:20px;height:20px;border:2px solid rgba(255,255,255,.1);border-top-color:var(--accent);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.status-bar{display:flex;justify-content:space-between;align-items:center;padding:8px 0;margin-bottom:8px;font-size:13px}.status-indicator{display:flex;align-items:center;gap:8px}.dot{width:8px;height:8px;border-radius:50%;background:var(--danger)}.status-indicator.connected .dot{background:var(--success)}.room-code{color:var(--text-secondary);font-variant-numeric:tabular-nums}.baby-page{gap:16px}.monitor-display{flex:1;display:flex;gap:24px;align-items:center;justify-content:center;min-height:200px}.level-meter{position:relative;width:40px;height:220px;background:var(--bg-card);border-radius:var(--radius);overflow:hidden}.level-bar{position:absolute;bottom:0;left:0;right:0;height:0%;background:linear-gradient(to top,var(--success),var(--warning));transition:height .1s ease-out;border-radius:0 0 var(--radius) var(--radius)}.level-bar.above-threshold{background:linear-gradient(to top,var(--warning),var(--danger))}.threshold-line{position:absolute;left:-4px;right:-4px;height:2px;background:var(--danger);z-index:2;transition:bottom .2s ease}.threshold-line:after{content:"";position:absolute;right:-2px;top:-4px;width:10px;height:10px;background:var(--danger);border-radius:50%}.noise-status{display:flex;flex-direction:column;align-items:center;gap:16px;transition:all .3s ease}.noise-icon{color:var(--text-secondary);transition:color .3s ease}.noise-icon.alert{color:var(--danger);animation:pulse 1s ease-in-out infinite}.noise-label{font-size:18px;font-weight:600;color:var(--text-secondary)}.noise-status.alert .noise-label{color:var(--danger)}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.1)}}.controls{display:flex;flex-direction:column;gap:12px;padding-top:8px}.threshold-control{padding:16px;background:var(--bg-card);border-radius:var(--radius)}.threshold-control label{display:block;font-size:14px;color:var(--text-secondary);margin-bottom:12px}.threshold-control input[type=range]{width:100%;height:4px;-webkit-appearance:none;-moz-appearance:none;appearance:none;background:#ffffff1a;border-radius:2px;outline:none}.threshold-control input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:24px;height:24px;background:var(--accent);border-radius:50%;cursor:pointer}.threshold-control input[type=range]::-moz-range-thumb{width:24px;height:24px;background:var(--accent);border:none;border-radius:50%;cursor:pointer}.threshold-labels{display:flex;justify-content:space-between;font-size:12px;color:var(--text-secondary);margin-top:8px}.parent-page{gap:16px}.parent-display{flex:1;display:flex;flex-direction:column;gap:16px}.parent-status{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:16px;padding:40px 20px;background:var(--bg-card);border-radius:var(--radius);transition:all .3s ease}.parent-status.alert{background:#f8717126;border:1px solid rgba(248,113,113,.3)}.parent-icon{color:var(--success);transition:color 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var(--accent);border-radius:12px;box-shadow:0 0 0 1000px #0006}.scanner-hint{color:var(--text-secondary);font-size:14px;text-align:center}@media (max-width: 360px){.digit{width:40px;height:56px;font-size:26px}.role-selection,.mode-picker{flex-direction:column}.scanner-viewport,.qr-image{width:240px;height:240px}}@media (min-width: 768px){.page{max-width:480px;margin:0 auto}}