/* MedMatch — Result Preview
   Phone-first. Camera stage is dark (feels like a camera app),
   result stage is light (feels like the site). */

:root{
  --foam:#F4FAF9; --shell:#FFFFFF; --sand:#F2EFE7;
  --sea-deep:#06333B; --sea:#0B4A54; --teal:#12707B;
  --turquoise:#2FA9A4; --aqua:#8FD6D0;
  --ink:#0C2B30; --ink-soft:#4E6A6D;
  --line:rgba(12,43,48,.15); --line-soft:rgba(12,43,48,.08);
  --serif:"Cormorant Garamond",Georgia,serif;
  --sans:"Jost","Segoe UI",system-ui,sans-serif;
  --ease:cubic-bezier(.22,1,.36,1);
}

*,*::before,*::after{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0; background:var(--sea-deep); color:var(--ink);
  font-family:var(--sans); font-size:16px; line-height:1.5;
  -webkit-font-smoothing:antialiased;
  overscroll-behavior:none;
}
button{font:inherit;color:inherit;cursor:pointer}
img,canvas,video{display:block;max-width:100%}

/* Pinned to the viewport rather than allowed to grow. The scrolling
   happens inside the panel below the photo, which is what keeps the
   "Ask a surgeon" button on screen — letting the page grow instead put
   the only call to action below the fold on every phone. */
.app{
  max-width:520px; margin:0 auto;
  height:100vh; height:100dvh;
  background:var(--foam); display:flex; flex-direction:column;
  position:relative; overflow:hidden;
}

/* header */
.hdr{
  display:flex; align-items:center; justify-content:space-between;
  gap:12px; padding:14px 18px; background:var(--sea-deep); color:#fff;
  flex:0 0 auto;
}
.hdr__brand{font-family:var(--serif);font-size:19px;letter-spacing:.01em;
  color:inherit;text-decoration:none}
.hdr__brand b{font-weight:600}
.hdr__brand span{opacity:.62;font-weight:300}
.hdr__privacy{
  display:flex;align-items:center;gap:6px;
  font-size:11px;letter-spacing:.06em;text-transform:uppercase;
  color:var(--aqua);opacity:.9;white-space:nowrap;
}
.hdr__privacy svg{width:13px;height:13px;flex:0 0 auto}

/* screens */
.screen{display:none;flex:1 1 auto;flex-direction:column;min-height:0}
.screen.is-on{display:flex}

/* 1 — pick treatment */
.pick{padding:26px 18px 34px;flex:1 1 auto;min-height:0;overflow-y:auto}
.pick h1{
  font-family:var(--serif);font-weight:400;font-size:31px;line-height:1.15;
  margin:0 0 8px;letter-spacing:-.01em;
}
.pick h1 em{font-style:italic;color:var(--teal)}
.pick__sub{margin:0 0 22px;color:var(--ink-soft);font-size:14.5px;max-width:40ch}

.tiles{display:grid;gap:10px}
.tile{
  display:flex;align-items:center;gap:14px;width:100%;text-align:left;
  background:var(--shell);border:1px solid var(--line-soft);border-radius:14px;
  padding:15px 16px;transition:.25s var(--ease);
}
.tile:hover,.tile:focus-visible{border-color:var(--turquoise);transform:translateY(-1px)}
.tile__ico{
  width:42px;height:42px;flex:0 0 auto;border-radius:11px;
  background:var(--foam);display:grid;place-items:center;color:var(--teal);
}
.tile__ico svg{width:23px;height:23px}
.tile__t{font-weight:500;font-size:16px;letter-spacing:.01em}
.tile__b{font-size:12.5px;color:var(--ink-soft);margin-top:1px}
.tile__go{margin-left:auto;color:var(--turquoise);font-size:19px;opacity:.55}
.tile[data-nosim] .tile__go{font-size:10.5px;letter-spacing:.05em;text-transform:uppercase;opacity:.75}

.note{
  margin-top:22px;padding:13px 15px;border-radius:12px;
  background:rgba(154,100,16,.07);border:1px solid rgba(154,100,16,.2);
  font-size:12.5px;line-height:1.55;color:#6d4a10;
}
.note b{font-weight:600}

/* 2 — camera */
.cam{position:relative;flex:1;background:#000;min-height:0}
.cam__video{
  position:absolute;inset:0;width:100%;height:100%;object-fit:cover;
  transform:scaleX(-1);
}
.cam__guide{position:absolute;inset:0;width:100%;height:100%;pointer-events:none}
.cam__hint{
  position:absolute;left:0;right:0;top:16px;text-align:center;
  color:#fff;font-size:13.5px;letter-spacing:.02em;
  text-shadow:0 1px 8px rgba(0,0,0,.65);padding:0 24px;
  transition:.2s var(--ease);
}
.cam__hint.is-ok{color:var(--aqua)}
.cam__bar{
  position:absolute;left:0;right:0;bottom:0;
  padding:16px 20px calc(18px + env(safe-area-inset-bottom));
  background:linear-gradient(to top,rgba(0,0,0,.72),transparent);
  display:flex;align-items:center;justify-content:space-between;gap:16px;
}
.shutter{
  width:70px;height:70px;border-radius:50%;background:#fff;
  border:4px solid rgba(255,255,255,.35);background-clip:padding-box;
  transition:.18s var(--ease);flex:0 0 auto;
}
.shutter:disabled{opacity:.35}
.shutter:not(:disabled):active{transform:scale(.92)}
.cam__side{
  color:#fff;background:rgba(255,255,255,.13);border:0;border-radius:11px;
  padding:11px 13px;font-size:12px;letter-spacing:.04em;text-transform:uppercase;
  min-width:74px;text-align:center;backdrop-filter:blur(6px);
}
.cam__side:disabled{opacity:.4}

.boot{
  position:absolute;inset:0;display:grid;place-items:center;
  background:#000;color:#fff;text-align:center;padding:30px;z-index:5;
}
.boot p{font-size:13.5px;color:rgba(255,255,255,.72);margin:14px 0 0;max-width:32ch}
.boot__spin{
  width:34px;height:34px;border-radius:50%;margin:0 auto;
  border:2px solid rgba(255,255,255,.2);border-top-color:var(--aqua);
  animation:spin .9s linear infinite;
}
@keyframes spin{to{transform:rotate(360deg)}}
.boot__err{color:#FFB4A8;font-size:14px;line-height:1.6}
.boot__err button{
  margin-top:16px;background:rgba(255,255,255,.14);border:0;border-radius:10px;
  padding:12px 18px;color:#fff;font-size:13px;
}

/* 3 — result */
.res{flex:1;display:flex;flex-direction:column;min-height:0;background:var(--foam)}
.stage{
  position:relative;background:#0a1a1d;flex:0 0 auto;overflow:hidden;
  margin:0 auto;   /* narrow portrait photos stay centred */
}
.stage canvas{position:absolute;inset:0;width:100%;height:100%}
#cv-after{clip-path:inset(0 0 0 var(--split,50%))}

.handle{
  position:absolute;top:0;bottom:0;width:2px;background:rgba(255,255,255,.9);
  left:var(--split,50%);pointer-events:none;
  box-shadow:0 0 12px rgba(0,0,0,.5);
}
.handle::after{
  content:"";position:absolute;top:50%;left:50%;
  width:38px;height:38px;margin:-19px 0 0 -19px;border-radius:50%;
  background:rgba(255,255,255,.95);
  box-shadow:0 2px 12px rgba(0,0,0,.4);
}
.handle::before{
  content:"\2039 \203A";position:absolute;top:50%;left:50%;
  transform:translate(-50%,-50%);
  z-index:2;color:var(--sea-deep);font-size:15px;letter-spacing:2px;
  font-weight:600;line-height:1;
}
.stage__grab{position:absolute;inset:0;cursor:ew-resize;touch-action:none}
.tag{
  position:absolute;top:12px;font-size:10.5px;letter-spacing:.12em;
  text-transform:uppercase;color:#fff;background:rgba(0,0,0,.5);
  padding:5px 10px;border-radius:20px;backdrop-filter:blur(4px);
  pointer-events:none;
}
.tag--a{left:12px}
.tag--b{right:12px;background:rgba(47,169,164,.9)}

.busy{
  position:absolute;inset:0;display:grid;place-items:center;z-index:4;
  background:rgba(10,26,29,.72);color:#fff;font-size:13px;letter-spacing:.04em;
}
.busy[hidden]{display:none}

/* Before / after switch.
   The wipe alone was not discoverable, and worse, a stray tap could
   pin it to an edge and make the whole tool look broken. These three
   buttons are the reliable way to see the result. */
.viewtabs{
  flex:0 0 auto;display:grid;grid-template-columns:repeat(3,1fr);gap:4px;
  padding:10px 18px 0;background:var(--foam);
}
.viewtabs button{
  border:1px solid var(--line-soft);background:var(--shell);color:var(--ink-soft);
  border-radius:9px;padding:9px 4px;font-size:13px;letter-spacing:.02em;
  transition:.18s var(--ease);
}
.viewtabs button.is-on{
  background:var(--sea-deep);border-color:var(--sea-deep);color:#fff;font-weight:500;
}
/* The drag handle only means something in slide mode. */
.stage:not(.is-wiping) .handle{opacity:0}
.handle{transition:opacity .18s var(--ease)}

/* Save fallback for iPhone, where there is no share sheet and the
   download attribute does nothing. */
.saveover{
  position:absolute;inset:0;z-index:20;background:rgba(6,51,59,.96);
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:14px;padding:20px calc(18px + env(safe-area-inset-left));
}
.saveover__tip{
  margin:0;color:#fff;font-size:14px;text-align:center;line-height:1.5;max-width:30ch;
}
.saveover__tip b{color:var(--aqua);font-weight:500}
.saveover img{
  max-width:100%;max-height:64vh;border-radius:12px;
  box-shadow:0 8px 30px rgba(0,0,0,.45);
}
.saveover__close{
  background:rgba(255,255,255,.15);border:0;border-radius:10px;
  padding:12px 26px;color:#fff;font-size:14px;
}

/* controls */
.ctl{padding:16px 18px 0;flex:1 1 auto;min-height:0;overflow-y:auto;-webkit-overflow-scrolling:touch}
.ctl__hd{
  display:flex;align-items:baseline;justify-content:space-between;gap:10px;
  margin:0 0 12px;
}
.ctl__hd h2{font-family:var(--serif);font-weight:500;font-size:22px;margin:0}
.ctl__reset{
  background:none;border:0;padding:0;color:var(--teal);font-size:12.5px;
  text-decoration:underline;text-underline-offset:3px;
}
.sld{margin-bottom:15px}
.sld__row{display:flex;justify-content:space-between;align-items:baseline;margin-bottom:5px;gap:10px}
.sld__lb{font-size:13.5px;font-weight:500}
.sld__hint{font-size:11.5px;color:var(--ink-soft);display:block;font-weight:400}
.sld__vl{font-size:12px;color:var(--teal);font-variant-numeric:tabular-nums;font-weight:500;flex:0 0 auto}
input[type=range]{
  -webkit-appearance:none;appearance:none;width:100%;height:26px;
  background:transparent;margin:0;display:block;
}
input[type=range]::-webkit-slider-runnable-track{
  height:4px;border-radius:4px;
  background:linear-gradient(var(--turquoise),var(--turquoise)) 0/var(--fill,0%) 100% no-repeat,rgba(12,43,48,.12);
}
input[type=range]::-webkit-slider-thumb{
  -webkit-appearance:none;width:24px;height:24px;border-radius:50%;
  background:#fff;border:1px solid var(--line);margin-top:-10px;
  box-shadow:0 2px 7px rgba(12,43,48,.22);
}
input[type=range]::-moz-range-track{height:4px;border-radius:4px;background:rgba(12,43,48,.12)}
input[type=range]::-moz-range-thumb{
  width:22px;height:22px;border-radius:50%;background:#fff;
  border:1px solid var(--line);box-shadow:0 2px 7px rgba(12,43,48,.22);
}

/* What the picture shows, and what it would cost.
   Doubles as the screen-reader description via aria-live. */
.sum{
  background:var(--shell);border:1px solid var(--line-soft);
  border-radius:12px;padding:14px 16px;margin:2px 0 14px;
}
.sum__idle{margin:0;font-size:13px;color:var(--ink-soft)}
.sum__what{margin:0;font-size:13.5px;line-height:1.5;color:var(--ink-soft)}
.sum__what b{display:block;font-size:15.5px;color:var(--ink);font-weight:500;margin-bottom:1px}
.sum__price{
  display:flex;align-items:baseline;flex-wrap:wrap;gap:4px 10px;
  margin:12px 0 0;padding-top:12px;border-top:1px solid var(--line-soft);
}
.sum__price span{
  flex:0 0 100%;font-size:10.5px;letter-spacing:.1em;text-transform:uppercase;
  color:var(--teal);font-weight:500;
}
.sum__price b{font-size:14px;font-weight:500;color:var(--ink)}
.sum__price strong{
  margin-left:auto;font-family:var(--serif);font-size:24px;font-weight:600;
  color:var(--sea-deep);white-space:nowrap;
}
.sum__note{display:block;font-size:11.5px;color:var(--ink-soft);margin-top:4px}
.sum__quote{
  display:inline-block;margin-top:10px;font-size:13.5px;color:var(--teal);
  text-decoration:underline;text-underline-offset:3px;
}

.disc{
  margin:6px 0 16px;padding:13px 15px;border-radius:12px;
  background:rgba(154,100,16,.07);border:1px solid rgba(154,100,16,.2);
  font-size:12px;line-height:1.6;color:#6d4a10;
}
.disc b{font-weight:600;display:block;margin-bottom:2px}
.disc a{color:inherit}
.disc__tech{display:block;margin-top:6px;opacity:.6;font-size:10.5px;
  font-family:ui-monospace,SFMono-Regular,Menlo,monospace;word-break:break-word}

.acts{
  flex:0 0 auto;padding:14px 18px calc(16px + env(safe-area-inset-bottom));
  background:var(--shell);border-top:1px solid var(--line-soft);
  display:grid;grid-template-columns:1fr 1fr;gap:9px;
}
.btn{
  border:0;border-radius:11px;padding:14px 16px;font-size:14.5px;
  letter-spacing:.02em;text-align:center;text-decoration:none;
  display:flex;align-items:center;justify-content:center;gap:7px;
  transition:.2s var(--ease);
}
.btn--go{background:var(--sea-deep);color:#fff;grid-column:1/-1}
.btn--go:hover{background:var(--teal)}
.btn--gh{background:var(--foam);color:var(--sea);border:1px solid var(--line-soft)}
.btn--gh:hover{border-color:var(--turquoise)}
.btn svg{width:16px;height:16px;flex:0 0 auto}

/* knee / no-sim panel */
.nosim{padding:24px 18px 30px;flex:1 1 auto;min-height:0;overflow-y:auto}
.nosim h1{font-family:var(--serif);font-weight:400;font-size:27px;margin:0 0 6px}
.nosim>p{color:var(--ink-soft);font-size:14px;margin:0 0 20px;max-width:44ch}
.tl{list-style:none;margin:0;padding:0 0 0 22px;border-left:1px solid var(--line-soft)}
.tl li{position:relative;padding:0 0 20px 14px}
.tl li::before{
  content:"";position:absolute;left:-27px;top:5px;width:9px;height:9px;
  border-radius:50%;background:var(--turquoise);
  box-shadow:0 0 0 3px var(--foam);
}
.tl__w{font-size:11px;letter-spacing:.09em;text-transform:uppercase;color:var(--teal);font-weight:500}
.tl__t{font-size:14.5px;font-weight:500;margin-top:2px}
.tl__b{font-size:13px;color:var(--ink-soft);margin-top:2px;line-height:1.55}

.back{
  background:none;border:0;padding:8px 0;margin:0 0 6px;
  color:var(--teal);font-size:13px;display:flex;align-items:center;gap:6px;
}

@media (prefers-reduced-motion:reduce){
  *{animation-duration:.01ms !important;transition-duration:.01ms !important}
}