:root{color-scheme:dark;--bg: #0b0c10;--panel: #15171c;--panel-2: #1c1f26;--text: #e8eaed;--muted: #9aa0a6;--accent: #7eebc1;--warn: #ff7676}*{box-sizing:border-box}html,body{margin:0;padding:0;background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,system-ui,sans-serif;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none;overscroll-behavior:none}body{padding:env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left)}#app-root{display:flex;flex-direction:column;height:100dvh;padding:12px;gap:12px;max-width:720px;margin:0 auto}#brand{display:flex;align-items:center;gap:8px;padding:0 2px}#brand-logo{display:block;border-radius:6px}#brand-name{font-size:14px;font-weight:600;letter-spacing:-.01em;color:var(--text)}#header{display:flex;align-items:center;justify-content:space-between;gap:8px}#status-pill{padding:10px 18px;border-radius:999px;background:var(--panel);font-weight:600;font-size:14px;letter-spacing:.02em;transition:background .2s,color .2s}#status-pill.status-breathing{background:var(--accent);color:#06281c}#status-pill.status-lost{background:var(--warn);color:#2b0707;animation:pulse 1.2s ease-in-out infinite}@keyframes pulse{0%,to{opacity:1}50%{opacity:.6}}#readouts{display:flex;flex-direction:column;align-items:flex-end;gap:2px;font-variant-numeric:tabular-nums}#bpm-readout{font-size:14px;color:var(--muted);transition:color .3s,font-weight .3s}#bpm-readout.conf-high{color:var(--accent);font-weight:600}#bpm-readout.conf-med{color:var(--text);font-weight:500}#bpm-readout.conf-low{color:var(--muted)}#bpm-readout.conf-none{color:var(--muted);opacity:.55}#since-readout{font-size:12px;color:var(--muted)}#since-readout.warn{color:var(--warn);font-weight:600}#video-wrap{position:relative;flex:1;min-height:200px;background:#000;border-radius:12px;overflow:hidden}#video,#roi-overlay,#video-placeholder{position:absolute;top:0;right:0;bottom:0;left:0;width:100%;height:100%}#video-placeholder{display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;background:linear-gradient(180deg,#0f1116,#14171f);color:var(--muted);padding:24px;pointer-events:none;transition:opacity .3s}#video-placeholder.hidden{opacity:0}#video-placeholder .placeholder-sub{font-size:12px;letter-spacing:.04em;text-transform:uppercase;opacity:.5}#video{object-fit:cover}#roi-overlay{touch-action:none}#plots{display:flex;align-items:stretch;gap:8px;height:64px}#signal-plot{flex:1;height:100%;background:var(--panel);border-radius:8px;display:block}#confidence-bar{width:14px;height:100%;background:var(--panel);border-radius:6px;overflow:hidden;position:relative}#confidence-fill{position:absolute;bottom:0;left:0;right:0;height:0%;background:var(--accent);transition:height .15s ease-out}#controls{display:grid;grid-template-columns:1fr 1fr;gap:8px}#controls #zoom-row,#controls #reset-btn{grid-column:1 / -1}#controls #reset-btn{font-size:13px;padding:8px 12px;color:var(--muted)}#zoom-row{display:grid;grid-template-columns:60px 1fr 56px;align-items:center;gap:10px;background:var(--panel);padding:8px 14px;border-radius:10px;font-size:13px}#zoom-row label{color:var(--muted)}#zoom-row .value{text-align:right;font-variant-numeric:tabular-nums;color:var(--muted)}#zoom-row input[type=range]{width:100%}button{font:inherit;font-size:15px;padding:12px 16px;border-radius:10px;border:1px solid #2a2d34;background:var(--panel);color:var(--text);cursor:pointer;-webkit-tap-highlight-color:transparent}button.primary{background:var(--accent);color:#06281c;border-color:var(--accent);font-weight:600}button:disabled{opacity:.5;cursor:default}#hint{margin:0;padding:4px;font-size:11px;color:var(--muted);text-align:center}#disclaimer{margin:0;padding:8px 4px;font-size:11px;color:var(--muted);text-align:center;line-height:1.4}