:root{
  /* Deep-navy / holographic-cyan console palette. */
  --bg:#03060d; --bg-2:#060d1a; --panel:#0a1526; --panel-2:#0e1f36;
  --line:#12304e; --line-2:#1d4a72;
  --fg:#e8f4ff; --fg-2:#9db8d6; --fg-3:#5f7d9c;
  --accent:#2ad4f0; --accent-2:#f2c15c; --accent-dim:#0d5a70;
  --live:#3ce0a8; --warn:#f2c15c; --err:#ff6b5e;
  --glow:rgba(42,212,240,.55);
  --radius:6px;
  --mono:"IBM Plex Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  --sans:-apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans KR", "Malgun Gothic", Roboto, sans-serif;
}
*{box-sizing:border-box;}
html,body{height:100%;margin:0;}
body{background:var(--bg);color:var(--fg);font:13px/1.45 var(--sans);-webkit-font-smoothing:antialiased;overflow:hidden;}

.app{display:flex;flex-direction:column;height:100%;}

/* ---------- top bar ---------- */
.topbar{display:flex;align-items:center;justify-content:space-between;gap:16px;
  padding:10px 16px;border-bottom:1px solid var(--line);background:var(--bg-2);flex:0 0 auto;}
.brand{display:flex;align-items:center;gap:10px;}
.mark{width:26px;height:26px;color:var(--accent);flex:0 0 auto;}
.brand-text{display:flex;flex-direction:column;line-height:1.15;}
.wordmark{font:600 15px/1 var(--mono);letter-spacing:.06em;color:var(--fg);}
.subtitle{font-size:10.5px;color:var(--fg-3);letter-spacing:.02em;}
.topbar-meta{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end;align-items:center;min-width:0;}
.badge{font:500 10.5px/1 var(--mono);padding:5px 8px;border:1px solid var(--line-2);border-radius:999px;color:var(--fg-2);white-space:nowrap;}
.badge-muted{color:var(--fg-3);border-style:dashed;white-space:normal;line-height:1.4;max-width:300px;text-align:right;}

/* ---------- language switcher ---------- */
.lang{position:relative;}
.lang-btn{display:flex;align-items:center;gap:5px;background:var(--panel);color:var(--fg-2);
  border:1px solid var(--line-2);border-radius:999px;padding:5px 9px;cursor:pointer;
  font:600 10.5px/1 var(--mono);letter-spacing:.04em;transition:background .12s,border-color .12s,color .12s;}
.lang-btn:hover{background:var(--panel-2);border-color:var(--accent-dim);color:var(--fg);}
.lang-btn[aria-expanded="true"]{background:var(--accent-dim);border-color:var(--accent);color:#fff;}
.lang-btn .globe{width:13px;height:13px;flex:0 0 auto;}
.lang-btn .caret{width:8px;height:5px;flex:0 0 auto;opacity:.75;}
.lang-menu{position:absolute;top:calc(100% + 6px);right:0;z-index:40;margin:0;padding:4px;list-style:none;
  min-width:172px;background:var(--panel);border:1px solid var(--line-2);border-radius:var(--radius);
  box-shadow:0 10px 26px rgba(0,0,0,.55);}
.lang-menu li{display:flex;align-items:center;justify-content:space-between;gap:12px;
  padding:8px 10px;border-radius:3px;cursor:pointer;color:var(--fg-2);font:13px var(--sans);}
.lang-menu li:hover{background:var(--panel-2);color:var(--fg);}
.lang-menu li[aria-selected="true"]{background:var(--accent-dim);color:#fff;}
.lang-menu li[aria-selected="true"] .lang-short{color:#fff;opacity:.85;}
.lang-short{font:600 10.5px/1 var(--mono);color:var(--fg-3);letter-spacing:.04em;}

/* ---------- stage ---------- */
.stage{display:flex;flex:1 1 auto;min-height:0;}
.rail{flex:0 0 240px;border-right:1px solid var(--line);background:var(--bg-2);overflow-y:auto;padding:12px;}
.panel{padding:10px 0;border-bottom:1px solid var(--line);}
.panel:last-child{border-bottom:0;}
.panel-title{margin:0 0 8px;font:600 10px/1.3 var(--mono);letter-spacing:.11em;text-transform:uppercase;color:var(--fg-3);
  display:flex;flex-wrap:wrap;gap:2px 10px;justify-content:space-between;align-items:baseline;}
.panel-title>span:first-child{min-width:0;overflow-wrap:anywhere;}
.field{display:block;margin-bottom:6px;}
.field>span{display:block;font-size:10.5px;color:var(--fg-3);margin-bottom:4px;}
select,input[type=text]{width:100%;background:var(--panel);color:var(--fg);border:1px solid var(--line-2);
  border-radius:var(--radius);padding:6px 7px;font:12px var(--sans);}
select:focus,input:focus,button:focus-visible{outline:1px solid var(--accent);outline-offset:1px;}
.micro{margin:6px 0 0;font-size:10.5px;color:var(--fg-3);line-height:1.5;}
.micro.mono{font-family:var(--mono);}
.stepper{display:grid;grid-template-columns:34px 1fr 34px;align-items:center;gap:6px;}
.stepper button{height:30px;background:var(--panel);color:var(--fg);border:1px solid var(--line-2);border-radius:var(--radius);
  font:600 16px/1 var(--mono);cursor:pointer;transition:background .12s,border-color .12s;}
.stepper button:hover{background:var(--panel-2);border-color:var(--accent-dim);}
.stepper button:active{background:var(--accent-dim);}
.readout{font:600 20px/1 var(--mono);text-align:center;color:var(--fg);font-variant-numeric:tabular-nums;}
.readout small{font-size:11px;color:var(--fg-3);margin-left:2px;font-weight:400;}
.readout.small{font-size:14px;text-align:left;margin-top:4px;}
input[type=range]{width:100%;-webkit-appearance:none;background:transparent;margin:2px 0;}
input[type=range]::-webkit-slider-runnable-track{height:3px;background:var(--line-2);border-radius:2px;}
input[type=range]::-webkit-slider-thumb{-webkit-appearance:none;width:13px;height:13px;margin-top:-5px;border-radius:50%;
  background:var(--accent);border:0;cursor:pointer;}
input[type=range]::-moz-range-track{height:3px;background:var(--line-2);border-radius:2px;}
input[type=range]::-moz-range-thumb{width:13px;height:13px;border:0;border-radius:50%;background:var(--accent);cursor:pointer;}
.tgc{display:grid;grid-template-columns:repeat(8,1fr);gap:3px;height:76px;align-items:stretch;}
.tgc .zone{position:relative;background:var(--panel);border:1px solid var(--line-2);border-radius:2px;cursor:ns-resize;
  display:flex;flex-direction:column;justify-content:flex-end;}
.tgc .zone .fill{background:linear-gradient(180deg,var(--accent),var(--accent-dim));width:100%;}
.tgc .zone:hover{border-color:var(--accent);}
.graybar{height:14px;margin-top:7px;border:1px solid var(--line-2);border-radius:2px;}
.sources{display:flex;flex-direction:column;gap:5px;margin-bottom:8px;}
.src{text-align:left;background:var(--panel);color:var(--fg-2);border:1px solid var(--line-2);border-radius:var(--radius);
  padding:6px 8px;font:12px var(--sans);cursor:pointer;transition:background .12s,color .12s,border-color .12s;}
.src:hover{background:var(--panel-2);color:var(--fg);}
.src.active{background:var(--accent-dim);color:#fff;border-color:var(--accent);}

/* ---------- viewport ---------- */
.viewport-wrap{flex:1 1 auto;min-width:0;display:flex;flex-direction:column;padding:12px;gap:10px;}
.viewport{position:relative;flex:1 1 auto;min-height:0;background:#000;border:1px solid var(--line);border-radius:var(--radius);
  overflow:hidden;display:flex;align-items:center;justify-content:center;}
#view{width:100%;height:100%;display:block;image-rendering:auto;}
.overlay{position:absolute;inset:0;pointer-events:none;}
.ruler{position:absolute;top:0;bottom:0;left:0;width:64px;margin:0;padding:0;list-style:none;font:10px/1 var(--mono);color:var(--fg-2);}
.ruler li{position:absolute;left:0;transform:translateY(-50%);white-space:nowrap;}
.ruler li::after{content:"";position:absolute;top:50%;left:0;width:6px;height:1px;background:currentColor;opacity:.7;}
.ruler li span{display:inline-block;background:rgba(8,9,11,.72);padding:1px 3px;margin-left:8px;border-radius:2px;}
.focus-marker{position:absolute;left:0;right:0;height:0;border-top:1px dashed var(--accent);opacity:.85;}
.focus-marker::after{content:"";position:absolute;right:6px;top:3px;font:10px var(--mono);color:var(--accent);}
.hud{position:absolute;top:8px;right:10px;text-align:right;font:11px/1.5 var(--mono);color:var(--fg-2);
  background:rgba(8,9,11,.55);padding:6px 8px;border-radius:3px;}
.hud b{color:var(--fg);font-weight:600;}
.hud-row{display:flex;gap:10px;justify-content:flex-end;align-items:baseline;}
.hud-row.small{color:var(--fg-3);font-size:10px;}
.frozen{position:absolute;top:8px;left:76px;font:600 11px/1 var(--mono);letter-spacing:.14em;color:var(--accent);
  border:1px solid var(--accent);padding:5px 8px;border-radius:3px;background:rgba(8,9,11,.6);}
.filmstrip{position:absolute;left:72px;right:10px;bottom:10px;height:30%;border:1px solid var(--line-2);
  background:rgba(0,0,0,.72);border-radius:3px;overflow:hidden;}
.filmstrip canvas{width:100%;height:100%;display:block;}
.filmstrip-label{position:absolute;top:4px;left:6px;font:10px var(--mono);color:var(--fg-2);background:rgba(0,0,0,.6);padding:1px 4px;border-radius:2px;}

/* ---------- transport ---------- */
.transport{display:flex;align-items:center;gap:10px;flex:0 0 auto;flex-wrap:wrap;row-gap:8px;}
.t-btn{background:var(--panel);color:var(--fg);border:1px solid var(--line-2);border-radius:var(--radius);
  padding:9px 15px;font:600 12px var(--sans);cursor:pointer;transition:background .12s,border-color .12s,color .12s;}
.t-btn:hover{background:var(--panel-2);border-color:var(--accent-dim);}
.t-btn.t-live{color:var(--live);border-color:var(--live);min-width:84px;}
.t-btn.t-live[aria-pressed="false"]{color:var(--accent);border-color:var(--accent);}
.mode-tabs{display:flex;border:1px solid var(--line-2);border-radius:var(--radius);overflow:hidden;}
.mode-tabs .mode{background:var(--panel);color:var(--fg-3);border:0;border-right:1px solid var(--line-2);
  padding:9px 14px;font:600 12px var(--mono);cursor:pointer;transition:background .12s,color .12s;}
.mode-tabs .mode:last-child{border-right:0;}
.mode-tabs .mode:hover{color:var(--fg);background:var(--panel-2);}
.mode-tabs .mode.active{background:var(--accent-dim);color:#fff;}
#btn-capture{margin-left:auto;}
.statusbar{display:flex;align-items:center;gap:8px;font-size:11px;color:var(--fg-2);flex:0 0 auto;min-height:16px;}
.statusbar .spacer{flex:1;}
.statusbar .mono{font-family:var(--mono);color:var(--fg-3);}
.dot{width:7px;height:7px;border-radius:50%;background:var(--fg-3);flex:0 0 auto;}
.dot.synthetic{background:var(--accent);}
.dot.connected,.dot.file{background:var(--live);}
.dot.error{background:var(--err);}
.dot.warn{background:var(--warn);}
.footer{flex:0 0 auto;padding:7px 16px;border-top:1px solid var(--line);color:var(--fg-3);font-size:10.5px;background:var(--bg-2);}
/* The tag the browser actually loaded, so "which build is this" is answered by
   the screen rather than guessed at. */
.footer{display:flex;align-items:center;gap:16px;justify-content:space-between;}
.build-badge{font:10.5px var(--mono);letter-spacing:.04em;white-space:nowrap;flex:0 0 auto;}
.build-badge b{color:var(--accent);font-weight:700;}

/* ---------- fullscreen ---------- */
.viewport-wrap:fullscreen{background:var(--bg);padding:0;gap:0;}
.viewport-wrap:fullscreen .transport,.viewport-wrap:fullscreen .statusbar{padding:8px 12px;}
.viewport-wrap:fullscreen .viewport{border:0;border-radius:0;}

@media (max-width:820px){
  /* Image first: the scan occupies the top of the screen, parameters scroll below. */
  .topbar{padding:8px 10px;gap:8px;}
  .brand{flex:0 0 auto;}
  .topbar-meta{flex:1 1 auto;min-width:0;flex-wrap:nowrap;}
  .badge{max-width:150px;overflow:hidden;text-overflow:ellipsis;}
  #badge-source{display:none;}
  .subtitle{display:none;}
  .topbar-meta .badge-muted{display:none;}
  .stage{flex-direction:column;overflow-y:auto;overflow-x:hidden;}
  .viewport-wrap{order:1;flex:0 0 auto;padding:10px 10px 6px;gap:7px;}
  .viewport{flex:0 0 auto;height:46vh;min-height:240px;}
  .rail{order:2;flex:0 0 auto;max-height:none;border-right:0;border-top:1px solid var(--line);
    display:grid;grid-template-columns:repeat(auto-fill,minmax(148px,1fr));gap:0 12px;padding:10px 12px 16px;}
  .panel{padding:9px 0;}
  .ruler{width:52px;}
  .ruler li{font-size:9px;}
  .hud{font-size:10px;padding:4px 6px;}
  .frozen{left:58px;font-size:10px;padding:4px 6px;}
  .filmstrip{left:58px;right:8px;}
  .transport{gap:7px;row-gap:7px;}
  .t-btn{padding:8px 11px;font-size:11.5px;}
  .t-btn.t-live{min-width:0;}
  .mode-tabs{flex:1 1 140px;min-width:0;}
  .mode-tabs .mode{flex:1 1 0;padding:8px 2px;font-size:11px;}
  #btn-capture{margin-left:0;}
  .footer{flex-wrap:wrap;gap:6px;row-gap:4px;}
}

/* ---------- premium display HUD (presentation only) ---------- */
.viewport{border-color:rgba(42,212,240,.22);
  box-shadow:0 0 42px rgba(42,212,240,.10), inset 0 0 70px rgba(3,8,18,.85);}

.corners{position:absolute;inset:6px;pointer-events:none;z-index:3;}
.corners i{position:absolute;width:22px;height:22px;border:1.5px solid var(--accent);opacity:.5;
  filter:drop-shadow(0 0 5px rgba(42,212,240,.5));}
.corners i:nth-child(1){top:0;left:0;border-right:0;border-bottom:0;}
.corners i:nth-child(2){top:0;right:0;border-left:0;border-bottom:0;}
.corners i:nth-child(3){bottom:0;left:0;border-right:0;border-top:0;}
.corners i:nth-child(4){bottom:0;right:0;border-left:0;border-top:0;}

.hud-card{position:absolute;z-index:4;padding:8px 10px;border-radius:8px;
  background:linear-gradient(160deg,rgba(10,21,38,.88),rgba(5,11,22,.74));
  border:1px solid rgba(42,212,240,.22);
  box-shadow:0 6px 22px rgba(0,0,0,.5), inset 0 1px 0 rgba(255,255,255,.05);
  backdrop-filter:blur(9px);-webkit-backdrop-filter:blur(9px);
  font:500 10.5px/1.5 var(--mono);color:var(--fg-2);pointer-events:none;
  animation:cardIn .5s ease both;}
@keyframes cardIn{from{opacity:0;transform:translateY(-4px);}to{opacity:1;transform:none;}}
.hud-tr{top:10px;right:10px;min-width:176px;}

/* Standby indicator: no probe attached, showing a simulated tissue frame. */
.standby-chip{position:absolute;z-index:4;top:10px;left:76px;display:flex;align-items:center;gap:7px;
  padding:6px 11px;border-radius:999px;font:10.5px var(--mono);letter-spacing:.07em;color:var(--fg-2);
  background:rgba(6,13,26,.74);border:1px solid var(--line-2);backdrop-filter:blur(7px);pointer-events:none;}
.standby-chip[hidden]{display:none;}
.standby-chip b{color:var(--accent);font-weight:700;}
.standby-chip .pulse{background:var(--accent-2);}
.standby-chip span:last-child{color:var(--fg-3);letter-spacing:0;}
.hud-bl{left:76px;bottom:10px;min-width:186px;}
.hud-br{right:10px;bottom:10px;min-width:178px;}

.hud-head{display:flex;align-items:center;gap:6px;margin-bottom:6px;
  font:700 9.5px/1 var(--mono);letter-spacing:.16em;text-transform:uppercase;color:var(--accent);}
.hud-head b{color:var(--fg);letter-spacing:.04em;font-size:11px;}
.hud-sep{width:1px;height:10px;background:var(--line-2);}
.pulse{width:5px;height:5px;border-radius:50%;background:var(--live);flex:0 0 auto;
  box-shadow:0 0 0 0 rgba(60,224,168,.6);animation:pulse 1.7s infinite;}
@keyframes pulse{0%{box-shadow:0 0 0 0 rgba(60,224,168,.6);}
  70%{box-shadow:0 0 0 7px rgba(60,224,168,0);}100%{box-shadow:0 0 0 0 rgba(60,224,168,0);}}
.hud-rows{display:flex;gap:10px;font-size:10.5px;color:var(--fg-2);}
.hud-rows span{white-space:nowrap;}
.hud-kv{display:flex;justify-content:space-between;gap:14px;font-size:10.5px;}
.hud-kv span{color:var(--fg-3);}
.hud-kv b{color:var(--fg);font-weight:600;}
.spark{display:block;width:100%;height:34px;margin:2px 0 6px;border-radius:4px;
  background:rgba(42,212,240,.06);border:1px solid rgba(42,212,240,.14);}

/* segmented display-theme control */
.seg{display:flex;gap:4px;background:var(--panel-2);border:1px solid var(--line);border-radius:6px;padding:3px;}
.seg button{flex:1 1 0;min-width:0;background:transparent;border:0;border-radius:4px;padding:6px 2px;
  color:var(--fg-3);font:600 9.5px/1.25 var(--mono);letter-spacing:-.01em;cursor:pointer;white-space:nowrap;
  transition:background .12s,color .12s;}
.seg button:hover{color:var(--fg-2);background:rgba(42,212,240,.08);}
.seg button.active{background:linear-gradient(180deg,rgba(42,212,240,.30),rgba(42,212,240,.14));
  color:#eafcff;box-shadow:inset 0 0 0 1px rgba(42,212,240,.42);}

@media (max-width:820px){
  .hud-bl,.hud-br{display:none;}
  .hud-tr{min-width:0;right:8px;top:8px;}
  .standby-chip{left:auto;right:8px;top:44px;font-size:9.5px;padding:4px 8px;}
  .standby-chip span:last-child{display:none;}
  .corners{inset:4px;}
  .corners i{width:15px;height:15px;}
}