/* =============================================================================
   Breathe-AR — NUHS. Screens are the exact design SVGs rendered full-bleed with
   invisible tap hotspots. Only the live screens (breathing, camera, volume) are
   drawn in the DOM, matched to the SVG geometry. Poppins is self-hosted so the
   live captions match the outlined text in the SVGs.
   Palette: navy #002F6C, cyan #00A9E0, green band #92D679.
   ========================================================================== */
@font-face{font-family:Poppins;font-weight:400;font-display:swap;src:url(assets/fonts/poppins-400.woff2) format('woff2')}
@font-face{font-family:Poppins;font-weight:600;font-display:swap;src:url(assets/fonts/poppins-600.woff2) format('woff2')}
@font-face{font-family:Poppins;font-weight:700;font-display:swap;src:url(assets/fonts/poppins-700.woff2) format('woff2')}

:root{
  --navy:#002F6C; --cyan:#00A9E0; --green:#92D679;
  --sans:Poppins,system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --shadow:0 6px 20px rgba(0,47,108,.14);
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:#fff;color:#10243a;font-family:var(--sans);-webkit-font-smoothing:antialiased;overflow:hidden}
button{font-family:inherit}

/* ---------------------------------------------------------------------------
   Adaptive stage. The UI fills the whole visible viewport (no letterbox) and
   reflows to any phone size. The design keeps a 390x844 reference ratio: static
   screens are the design SVGs stretched to fill, live screens are flex layouts
   that flex to the height, so nothing is cut off or scrolls.
   --------------------------------------------------------------------------- */
/* height is the VISIBLE viewport (dvh, plus a JS pixel fallback for older iOS),
   so the whole screen fits above the browser URL bar — nothing hides behind it. */
#frame{position:fixed;top:0;left:0;width:100vw;height:100vh;height:100dvh;overflow:hidden;background:#fff}
.app{position:relative;width:100%;height:100%;overflow:hidden;background:#fff}
/* every screen placed into the stage fills it exactly */
#app>*{position:absolute;inset:0;width:100%;height:100%}

/* ---------------------------------------------------------------------------
   SVG screen: the design frame fills the column at its 390x844 ratio, with
   absolutely-positioned invisible hotspots for taps.
   --------------------------------------------------------------------------- */
.svgscreen{position:absolute;inset:0;width:100%;height:100%;background:#fff}
/* the design frame is a background stretched to EXACTLY fill the stage (works on
   iOS Safari too), so there is no letterbox and hotspots line up with the art. */
.svgstage{position:absolute;inset:0;width:100%;height:100%;overflow:hidden;
  background-repeat:no-repeat;background-position:center;background-size:100% 100%}
.hotspot{position:absolute;border:0;background:transparent;padding:0;margin:0;cursor:pointer;
  -webkit-tap-highlight-color:transparent;outline:none}
.hotspot:active{background:rgba(255,255,255,.08)}
.hotspot.debug{background:rgba(255,0,0,.25);outline:1px solid red}

/* an overlay layer anchored to the 390x844 stage for live widgets on an SVG */
.svol{position:absolute;-webkit-appearance:none;appearance:none;height:16px;background:transparent;outline:none}
.svol::-webkit-slider-runnable-track{height:16px;border-radius:8px;background:transparent}
.svol::-webkit-slider-thumb{-webkit-appearance:none;width:26px;height:26px;border-radius:50%;background:var(--navy);margin-top:-5px;box-shadow:var(--shadow)}
.svol::-moz-range-thumb{width:26px;height:26px;border:0;border-radius:50%;background:var(--navy)}

/* ---------------------------------------------------------------------------
   Breathing screen — live. cyan field, 3 progress dots, soft green target band,
   full-width white strip indicator carrying the caption + cyan number.
   --------------------------------------------------------------------------- */
.bwrap{position:absolute;inset:0;display:flex;flex-direction:column;background:var(--cyan);color:#fff;
  width:100%;height:100%;overflow:hidden}
.btop{display:flex;align-items:center;gap:12px;padding:calc(env(safe-area-inset-top,0px) + 16px) 20px 4px;min-height:44px}
.bback{width:38px;height:38px;border-radius:50%;border:none;background:#fff;color:var(--navy);
  font-size:22px;line-height:1;box-shadow:var(--shadow);cursor:pointer;display:grid;place-items:center;flex:0 0 auto}
.bdots{display:flex;gap:7px;flex:1}
.bdots .seg{flex:1;height:14px;border-radius:7px;background:#D9D9D9}
.bdots .seg.on{background:var(--navy)}

.barea{position:relative;flex:1;overflow:hidden}
/* soft-edged green target band */
.bband{position:absolute;left:0;right:0;background:
  linear-gradient(180deg,rgba(146,214,121,0) 0%,#92D679 7%,#8fd473 50%,#92D679 93%,rgba(146,214,121,0) 100%);
  transition:bottom .25s ease,height .25s ease}
/* white breath strip */
.bstrip{position:absolute;left:0;right:0;background:#fff;color:var(--navy);
  display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;
  box-shadow:0 1px 0 rgba(0,0,0,.04),0 -1px 0 rgba(0,0,0,.04);transition:bottom .08s linear,height .2s ease}
.bcap{font-weight:700;font-size:26px;line-height:1.1;color:var(--navy);text-align:center;padding:0 16px}
.bcap.sm{font-size:21px}
.bnum{font-weight:700;font-size:46px;line-height:1;color:var(--cyan)}
.bsub{font-weight:400;font-size:14px;color:#2b4a74;text-align:center;padding:0 24px}

/* explainer caption (white, near the top, over the cyan field) */
.excap{position:absolute;top:84px;left:26px;right:26px;text-align:center;color:#fff;font-weight:700;
  font-size:22px;line-height:1.25;z-index:3}
.bfoot{padding:10px 20px calc(env(safe-area-inset-bottom,0px) + 16px)}
.bbtn{display:block;width:100%;border:none;border-radius:22px;padding:15px 16px;font-size:16px;font-weight:600;
  cursor:pointer;background:var(--navy);color:#fff;box-shadow:var(--shadow)}
.bbtn:active{transform:translateY(1px)}

/* ---------------------------------------------------------------------------
   Camera check screen (live) — matches Positioning 3/4: pills top, camera field,
   green overlay + check on success, navy button bottom.
   --------------------------------------------------------------------------- */
.cam{position:absolute;inset:0;display:flex;flex-direction:column;background:#fff;width:100%;height:100%}
.cam-top{display:flex;align-items:center;gap:10px;padding:calc(env(safe-area-inset-top,0px) + 16px) 20px 8px}
.cam-pill{font-size:12px;font-weight:600;color:#fff;background:var(--navy);padding:6px 14px;border-radius:16px}
.cam-pill.ghost{background:#9fb3cf}
.cam-field{position:relative;flex:1;background:#d9d9d9;overflow:hidden}
.cam-field video,.cam-field canvas{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cam-field canvas.mirror{transform:scaleX(-1)}         /* mirror front-camera preview */
.cam-tint{position:absolute;inset:0;background:rgba(146,214,121,.5);opacity:0;transition:opacity .25s;pointer-events:none}
.look{position:absolute;inset:0;display:grid;place-items:center;opacity:0;transition:opacity .2s;pointer-events:none}
.looksvg{filter:drop-shadow(0 4px 12px rgba(0,0,0,.25))}
.lk-fill{fill:var(--cyan);transition:opacity .2s}
.lk-ring{fill:none;stroke:#fff;stroke-width:6;stroke-linecap:round;transform:rotate(-90deg);transform-origin:50% 50%}
.lk-tick{fill:none;stroke:#fff;stroke-width:8;stroke-linecap:round;stroke-linejoin:round}
.cam-hint{position:absolute;left:16px;right:16px;bottom:16px;background:rgba(0,47,108,.85);color:#fff;
  border-radius:12px;padding:11px 14px;font-size:14px;text-align:center}
/* volume control matched to the Voice Volume SVG */
.volpill{display:flex;align-items:center;gap:10px;background:#AEDDFF;border-radius:30px;padding:0 18px;width:100%;height:100%}
.svol2{flex:1;accent-color:#002F6C;height:22px}

/* dynamic text overlaid on an SVG (results recommendation value) */
.ovl{position:absolute;color:var(--navy);font-weight:700;text-align:center}

/* tiny toast for voice feedback */
.vtoast{position:fixed;left:50%;transform:translateX(-50%);bottom:calc(env(safe-area-inset-bottom,0px) + 150px);
  background:rgba(0,47,108,.92);color:#fff;font-size:13px;font-weight:600;padding:9px 16px;border-radius:20px;
  z-index:50;max-width:88%;text-align:center;opacity:0;transition:opacity .2s;pointer-events:none}
.vtoast.show{opacity:1}

/* ---------------------------------------------------------------------------
   Training complete: "Save Data" button + save-CSV popup
   --------------------------------------------------------------------------- */
.sd-open{display:block;width:100%;height:100%;border:none;border-radius:999px;background:var(--navy);color:#fff;
  font-family:var(--sans);font-size:17px;font-weight:600;cursor:pointer;-webkit-tap-highlight-color:transparent}
.sd-open:active{transform:translateY(1px)}
.sd-wrap{position:absolute;inset:0;z-index:50;display:flex;align-items:center;justify-content:center;padding:16px;
  background:rgba(0,26,61,.45)}
.sd-card{width:100%;max-width:360px;background:#fff;border-radius:22px;padding:22px 20px 18px;box-shadow:0 18px 50px rgba(0,47,108,.3)}
.sd-h{margin:0 0 6px;color:var(--navy);font-size:20px;font-weight:700}
.sd-p{margin:0 0 16px;color:#33506f;font-size:14px;line-height:1.45}
.sd-lab{display:block;color:var(--cyan);font-size:13px;font-weight:600;margin-bottom:6px}
.sd-in{width:100%;border:1.5px solid #c9d6e6;border-radius:12px;padding:12px;font:inherit;font-size:15px;color:var(--navy);outline:none}
.sd-in:focus{border-color:var(--cyan)}
.sd-msg{min-height:20px;margin:8px 0 6px;color:#3a7a2a;font-size:13px;font-weight:600}
.sd-row{display:flex;gap:10px}
.sd-btn{flex:1;border:none;border-radius:999px;padding:13px 10px;background:var(--navy);color:#fff;font:inherit;font-size:15px;font-weight:600;cursor:pointer}
.sd-btn.ghost{background:#fff;color:var(--navy);border:1.5px solid var(--navy)}
.sd-btn:disabled{opacity:.6}

/* segmented threshold bars (Breath Guide Practice) */
.bseg{position:absolute;left:0;right:0;display:none}
.breplay{margin-left:auto;border:1.5px solid rgba(255,255,255,.55);border-radius:999px;background:var(--navy);color:#fff;
  font-family:var(--sans);font-size:14px;font-weight:600;padding:7px 16px;cursor:pointer;box-shadow:var(--shadow)}