@font-face {
  font-family: 'Archivo';
  src: url('/fonts/archivo-latin-var.woff2') format('woff2-variations');
  font-weight: 400 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: 'Plex Mono';
  src: url('/fonts/plex-mono-500-latin.woff2') format('woff2');
  font-weight: 500;
  font-display: swap;
}
@font-face {
  font-family: 'Plex Mono';
  src: url('/fonts/plex-mono-600-latin.woff2') format('woff2');
  font-weight: 600;
  font-display: swap;
}

/* ==========================================================================
   NUCLY — instrument console theme.
   The chrome is deliberately desaturated: anything tinted next to the field
   of view would bias how DAB brown reads against hematoxylin blue.
   ========================================================================== */
:root {
  --ink-950: #0e1013;
  --ink-900: #14171c;
  --ink-850: #181c22;
  --ink-800: #1e232b;
  --ink-700: #262c35;
  --line: #2b323c;
  --line-soft: #222831;
  --text: #e9ebee;
  --text-dim: #a4abb5;
  --text-faint: #767d87;

  /* Brand, borrowed from the NUCLY mark. Used on controls only. */
  --red: #d4202c;
  --red-soft: #e2454f;
  --blue: #1580d8;
  --blue-soft: #38a1ec;
  --amber: #e08420;

  --stage: #17181a;   /* neutral surround for the field of view */
  --focus: #56b1f0;

  --r-sm: 6px;
  --r-md: 9px;
  --r-lg: 14px;
  --appbar-h: 56px;
  --dock-h: 62px;

  --shadow-1: 0 1px 2px rgba(0, 0, 0, .5);
  --shadow-2: 0 8px 26px rgba(0, 0, 0, .5);
  --sans: 'Archivo', 'Helvetica Neue', Helvetica, sans-serif;
  --mono: 'Plex Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}

* { box-sizing: border-box; }

html { background: var(--ink-950); }

body {
  margin: 0;
  font-family: var(--sans);
  font-size: 14px;
  line-height: 1.5;
  color: var(--text);
  background:
    radial-gradient(1200px 600px at 78% -10%, #1a1f27 0%, transparent 60%),
    var(--ink-950);
  -webkit-text-size-adjust: 100%;
  overscroll-behavior-y: none;
}

h2, h3 { font-weight: 600; letter-spacing: -.01em; }

.sr-file {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0);
  white-space: nowrap; border: 0;
}

.skip {
  position: absolute;
  left: -999px;
  z-index: 300;
}
.skip:focus {
  left: 8px; top: 8px;
  padding: 8px 12px;
  background: var(--blue);
  color: #fff;
  border-radius: var(--r-sm);
}

:focus-visible {
  outline: 2px solid var(--focus);
  outline-offset: 2px;
}

/* ============================== app bar ============================== */
.appbar {
  position: sticky;
  top: 0;
  z-index: 60;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  height: calc(var(--appbar-h) + env(safe-area-inset-top));
  padding: env(safe-area-inset-top) 14px 0 max(14px, env(safe-area-inset-left));
  background: linear-gradient(180deg, #171b21, #12151a);
  border-bottom: 1px solid var(--line);
  box-shadow: var(--shadow-1);
}

.brand { display: flex; align-items: center; gap: 10px; min-width: 0; }
.brand__mark { border-radius: 8px; flex: none; }
.brand__text { display: flex; flex-direction: column; line-height: 1.1; min-width: 0; }
.brand__name {
  font-weight: 700;
  font-size: 17px;
  letter-spacing: .14em;
}
.brand__sub {
  font-size: 10.5px;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--text-faint);
  white-space: nowrap;
}

.appbar__right { display: flex; align-items: center; gap: 8px; }

.chip {
  font-family: var(--mono);
  font-size: 10px;
  padding: 2px 6px;
  border: 1px solid var(--line);
  border-radius: 999px;
  color: var(--text-dim);
  white-space: nowrap;
}
.chip--net { border-color: #5a4418; background: #2a2010; color: #e2b463; }

.status {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
  padding: 4px 9px;
  border: 1px solid var(--line-soft);
  border-radius: 999px;
  background: var(--ink-900);
  transition: opacity .5s;
  white-space: nowrap;
}

/* ============================== buttons ============================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  min-height: 38px;
  padding: 0 13px;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 500;
  color: var(--text);
  background: linear-gradient(180deg, var(--ink-800), var(--ink-850));
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  transition: background .13s, border-color .13s, transform .08s;
}
.btn:hover { background: var(--ink-700); border-color: #38414e; }
.btn:active { transform: translateY(1px); }

.btn--primary {
  background: linear-gradient(180deg, var(--blue-soft), var(--blue));
  border-color: #1f74bd;
  color: #fff;
  font-weight: 600;
}
.btn--primary:hover { background: linear-gradient(180deg, #4cb0f5, #1a8ae3); }

.btn--install {
  background: linear-gradient(180deg, var(--red-soft), var(--red));
  border-color: #a8202a;
  color: #fff;
  font-weight: 600;
}
.btn--install:hover { background: linear-gradient(180deg, #ea555f, #c01f2a); }

.btn--ghost { background: transparent; }
.btn--ghost:hover { background: var(--ink-800); }
.btn--sm { min-height: 34px; font-size: 12.5px; padding: 0 11px; }
.btn--wide { width: 100%; }

.ico {
  width: 15px; height: 15px;
  flex: none;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.7;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.show-touch { display: none; }
@media (hover: none) and (pointer: coarse) {
  .show-touch { display: inline-flex; }
}

/* ============================== offline banner ============================== */
.banner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 16px;
  background: var(--ink-900);
  border-bottom: 1px solid var(--line);
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--text-dim);
}
.banner__label { flex: none; }
.bar {
  flex: 1;
  height: 4px;
  background: var(--ink-700);
  border-radius: 999px;
  overflow: hidden;
}
.bar__fill {
  height: 100%;
  width: 0;
  background: linear-gradient(90deg, var(--blue), var(--blue-soft));
  transition: width .25s ease-out;
}

/* ============================== layout ============================== */
.shell {
  display: grid;
  grid-template-columns: 1fr;
  gap: 14px;
  padding: 14px;
  padding-left: max(14px, env(safe-area-inset-left));
  padding-right: max(14px, env(safe-area-inset-right));
  padding-bottom: calc(var(--dock-h) + env(safe-area-inset-bottom) + 14px);
}

@media (min-width: 1000px) {
  .shell {
    grid-template-columns: 372px minmax(0, 1fr);
    height: calc(100dvh - var(--appbar-h));
    padding-bottom: 14px;
    overflow: hidden;
  }
  .rail { order: -1; overflow-y: auto; padding-right: 4px; }
  .stagewrap { min-height: 0; }
}

/* ============================== readout ============================== */
.readout {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr)) auto;
  gap: 4px;
  align-items: stretch;
  padding: 9px 12px;
  background: linear-gradient(180deg, var(--ink-850), var(--ink-900));
  border: 1px solid var(--line);
  border-radius: var(--r-md) var(--r-md) 0 0;
  border-bottom: none;
}
.readout__cell { text-align: center; padding: 0 4px; min-width: 0; }
.readout__cell--index {
  padding-left: 16px;
  border-left: 1px solid var(--line);
  min-width: 118px;
}
.countLabel {
  font-size: 9.5px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.countValue,
.ki67Value {
  font-family: var(--mono);
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  line-height: 1.15;
}
.countValue { font-size: clamp(22px, 5vw, 30px); }
.ki67Value { font-size: clamp(24px, 5.4vw, 33px); color: var(--text); }
.countFoot {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--text-faint);
}
.posText { color: var(--red-soft); }
.negText { color: var(--blue-soft); }
.weakText { color: var(--amber); }

/* ============================== viewer ============================== */
#viewer {
  position: relative;
  width: 100%;
  height: 58dvh;
  overflow: hidden;
  background:
    radial-gradient(circle at 50% 42%, #1c1d20 0%, var(--stage) 72%);
  border: 1px solid var(--line);
  border-radius: 0;
  user-select: none;
  touch-action: none;           /* pointer gestures drive zoom and pan */
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

@media (min-width: 1000px) {
  .stagewrap { display: flex; flex-direction: column; height: 100%; }
  #viewer { flex: 1; height: auto; min-height: 0; }
}

#viewer.fullscreen {
  position: fixed;
  inset: 0;
  width: 100vw;
  height: 100dvh;
  z-index: 200;
  border: none;
  border-radius: 0;
}
body.is-fullscreen .dock { display: none; }

#stage {
  position: absolute;
  left: 0; top: 0;
  transform-origin: 0 0;
  will-change: transform;
}
#viewer canvas { position: absolute; left: 0; top: 0; }
#imageCanvas { background: #202124; cursor: crosshair; }
#overlayCanvas { pointer-events: none; }

body.mode-pan #imageCanvas { cursor: grab; }
body.mode-pan.is-panning #imageCanvas { cursor: grabbing; }
body.mode-erase #imageCanvas { cursor: cell; }
body.mode-roi #imageCanvas { cursor: crosshair; }

/* empty state */
.empty {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  padding: 24px;
  text-align: center;
  background-image:
    radial-gradient(circle, rgba(255, 255, 255, .045) 1px, transparent 1px);
  background-size: 22px 22px;
}
.empty[hidden] { display: none; }
.empty__ico {
  width: 30px; height: 30px;
  fill: none; stroke: var(--text-faint); stroke-width: 1.5;
  stroke-linecap: round;
  margin-bottom: 4px;
}
.empty__title { margin: 0; font-weight: 600; font-size: 15px; }
.empty__hint { margin: 0; max-width: 34ch; font-size: 12.5px; color: var(--text-faint); }
.empty__actions { display: flex; gap: 8px; margin-top: 12px; flex-wrap: wrap; justify-content: center; }

/* floating viewer controls */
.vtools {
  position: absolute;
  top: 10px; right: 10px;
  display: flex;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  background: rgba(14, 16, 19, .82);
  backdrop-filter: blur(7px);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
}
.vbtn {
  display: grid;
  place-items: center;
  width: 36px; height: 36px;
  color: var(--text-dim);
  background: transparent;
  border: none;
  border-radius: var(--r-sm);
  cursor: pointer;
}
.vbtn:hover { background: var(--ink-700); color: var(--text); }
.vbtn .ico { width: 17px; height: 17px; }

.zoomtag {
  position: absolute;
  bottom: 10px; right: 10px;
  padding: 3px 8px;
  font-family: var(--mono);
  font-size: 11px;
  color: var(--text-dim);
  background: rgba(14, 16, 19, .82);
  border: 1px solid var(--line);
  border-radius: 999px;
  pointer-events: none;
}

/* stage bar */
.stagebar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  padding: 9px 12px;
  background: var(--ink-900);
  border: 1px solid var(--line);
  border-top: none;
  border-radius: 0 0 var(--r-md) var(--r-md);
}
.stagebar__file { display: flex; gap: 8px; flex-wrap: wrap; }
.stagebar__zoom { display: flex; align-items: center; gap: 10px; flex: 1; min-width: 190px; }
.stagebar__zoom label {
  font-size: 10px;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--text-faint);
}

/* ============================== tool rail ============================== */
.rail { display: flex; flex-direction: column; gap: 10px; }

.panel {
  background: var(--ink-900);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  overflow: hidden;
}
.panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 11px 13px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .11em;
  text-transform: uppercase;
  color: var(--text-dim);
  cursor: pointer;
  list-style: none;
}
.panel__head::-webkit-details-marker { display: none; }
.panel__head::after {
  content: '';
  width: 7px; height: 7px;
  border-right: 1.6px solid var(--text-faint);
  border-bottom: 1.6px solid var(--text-faint);
  transform: rotate(45deg) translateY(-2px);
  transition: transform .18s;
  flex: none;
}
.panel[open] > .panel__head::after { transform: rotate(-135deg) translateY(-2px); }
.panel[open] > .panel__head { border-bottom: 1px solid var(--line-soft); }
.panel__head:hover { color: var(--text); }
.panel__mode {
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0;
  text-transform: none;
  color: var(--blue-soft);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  margin-left: auto;
  padding-right: 8px;
}
.panel__body { padding: 13px; display: flex; flex-direction: column; gap: 12px; }

/* mode grid */
.modegrid { display: grid; grid-template-columns: 1fr 1fr; gap: 7px; }
.mbtn {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 10px;
  font-family: var(--sans);
  font-size: 12.5px;
  font-weight: 500;
  text-align: left;
  color: var(--text);
  background: var(--ink-850);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: background .13s, border-color .13s;
}
.mbtn:hover { background: var(--ink-700); }
.mbtn kbd {
  margin-left: auto;
  font-family: var(--mono);
  font-size: 9.5px;
  color: var(--text-faint);
  border: 1px solid var(--line);
  border-radius: 3px;
  padding: 0 4px;
}
.mbtn.is-active {
  background: var(--ink-700);
  border-color: var(--blue);
  box-shadow: inset 0 0 0 1px rgba(21, 128, 216, .45);
}
.mbtn.is-active kbd { color: var(--text-dim); }

.swatch {
  width: 11px; height: 11px;
  border-radius: 50%;
  flex: none;
}
.swatch--pos { background: var(--red); }
.swatch--weak { background: var(--amber); }
.swatch--neg { background: var(--blue); }
.swatch--erase { background: var(--ink-700); border: 1.5px dashed var(--text-faint); }
.swatch--pan { background: transparent; border: 1.5px solid var(--text-dim); border-radius: 2px; }
.swatch--roi { background: transparent; border: 1.5px dashed #6ee07a; border-radius: 2px; }
.swatch--undo { background: transparent; border: 1.5px solid var(--text-faint); border-radius: 50% 50% 50% 0; }

.btnrow { display: flex; gap: 7px; flex-wrap: wrap; }
.btnrow .btn { flex: 1 1 auto; }

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: 4px 14px;
  margin: 0;
  padding: 0;
  list-style: none;
  font-size: 11px;
  color: var(--text-faint);
}
.legend li { display: flex; align-items: center; gap: 6px; }
.dot { width: 9px; height: 9px; border-radius: 50%; flex: none; }
.dot--pos { background: red; }
.dot--weak { background: #ff8c00; }
.dot--neg { background: blue; }
.dot--ring { border: 2px solid red; background: transparent; }

/* sliders */
.slider { display: flex; flex-direction: column; gap: 7px; }
.slider > span {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 11.5px;
  color: var(--text-dim);
}
.slider > span b {
  font-family: var(--mono);
  font-variant-numeric: tabular-nums;
  color: var(--text);
}

input[type='range'] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 22px;
  margin: 0;
  background: transparent;
  cursor: pointer;
}
input[type='range']::-webkit-slider-runnable-track {
  height: 4px;
  border-radius: 999px;
  background: var(--ink-700);
}
input[type='range']::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 18px; height: 18px;
  margin-top: -7px;
  border-radius: 50%;
  background: #e5e8ec;
  border: 1px solid #0a0c0f;
  box-shadow: var(--shadow-1);
}
input[type='range']::-moz-range-track {
  height: 4px;
  border-radius: 999px;
  background: var(--ink-700);
}
input[type='range']::-moz-range-thumb {
  width: 17px; height: 17px;
  border-radius: 50%;
  background: #e5e8ec;
  border: 1px solid #0a0c0f;
}

.subpanel {
  display: flex;
  flex-direction: column;
  gap: 11px;
  padding: 11px;
  background: var(--ink-850);
  border: 1px solid var(--line-soft);
  border-radius: var(--r-sm);
}

.note { margin: 0; font-size: 11.5px; color: var(--text-faint); }

.callout {
  padding: 9px 11px;
  font-size: 12px;
  line-height: 1.55;
  border-left: 2px solid var(--line);
  border-radius: 0 var(--r-sm) var(--r-sm) 0;
  background: var(--ink-850);
  color: var(--text-dim);
}
.callout b { color: var(--text); }
.callout--warn { border-left-color: var(--amber); background: #221b10; }
.callout--info { border-left-color: var(--blue); background: #111c26; }
.callout--gold {
  border-left-color: var(--red);
  background: #211315;
  font-weight: 600;
  color: var(--text);
}

.steps { margin: 0; padding-left: 20px; font-size: 12.5px; color: var(--text-dim); }
.steps li { margin-bottom: 4px; }
.steps b { color: var(--text); }

.restore { display: block; }
.restore .btn { width: 100%; }

.railfoot { display: flex; gap: 7px; }
.railfoot .btn { flex: 1; }

/* ============================== thumb dock ============================== */
.dock {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 70;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1px;
  height: calc(var(--dock-h) + env(safe-area-inset-bottom));
  padding-bottom: env(safe-area-inset-bottom);
  background: var(--line-soft);
  border-top: 1px solid var(--line);
}
.dbtn {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  font-family: var(--sans);
  font-size: 10.5px;
  font-weight: 500;
  color: var(--text-dim);
  background: #12151a;
  border: none;
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
}
.dbtn .swatch { width: 13px; height: 13px; }
.dbtn.is-active { color: #fff; background: var(--ink-700); box-shadow: inset 0 2px 0 var(--blue); }

@media (min-width: 1000px) {
  .dock { display: none; }
}

/* ============================== sheets (about / guide) ============================== */
.sheet {
  position: fixed;
  inset: 0;
  z-index: 120;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 0;
  background: rgba(6, 7, 9, .72);
  backdrop-filter: blur(3px);
  overflow-y: auto;
  overscroll-behavior: contain;
}
.sheet__inner {
  width: 100%;
  max-width: 760px;
  margin-top: auto;
  padding: 20px 20px calc(28px + env(safe-area-inset-bottom));
  background: var(--ink-900);
  border: 1px solid var(--line);
  border-radius: var(--r-lg) var(--r-lg) 0 0;
  box-shadow: var(--shadow-2);
  animation: rise .22s ease-out;
}
@media (min-width: 760px) {
  .sheet { align-items: center; padding: 28px; }
  .sheet__inner { margin: 0; border-radius: var(--r-lg); max-height: 88dvh; overflow-y: auto; }
}
@keyframes rise {
  from { transform: translateY(14px); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.sheet__head {
  position: sticky;
  top: -20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin: -20px -20px 14px;
  padding: 16px 20px;
  background: var(--ink-900);
  border-bottom: 1px solid var(--line);
}
.sheet__head h2 { margin: 0; font-size: 16px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.sheet p { color: var(--text-dim); }

.about { display: flex; align-items: center; gap: 14px; margin-bottom: 14px; }
.devPhoto {
  width: 76px; height: 76px;
  border-radius: 50%;
  object-fit: cover;
  border: 1px solid var(--line);
  flex: none;
}
.about__name { margin: 0; font-weight: 600; color: var(--text) !important; }
.about__role { margin: 2px 0 0; font-size: 12.5px; }

.doc { font-size: 13.5px; }
.doc h3 {
  margin: 22px 0 6px;
  font-size: 12px;
  letter-spacing: .09em;
  text-transform: uppercase;
  color: var(--blue-soft);
}
.doc p { margin: 0 0 8px; }
.doc ul { margin: 0 0 10px; padding-left: 20px; color: var(--text-dim); }
.doc li { margin-bottom: 5px; }
.doc b { color: var(--text); }
.doc .callout { margin: 10px 0; }

.tbl {
  width: 100%;
  border-collapse: collapse;
  font-size: 12.5px;
  margin: 8px 0 12px;
}
.tbl th, .tbl td {
  padding: 7px 9px;
  border: 1px solid var(--line);
  text-align: left;
  color: var(--text-dim);
}
.tbl th {
  background: var(--ink-850);
  font-size: 10.5px;
  letter-spacing: .07em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.risk { font-weight: 600; }
.risk--hi { color: #ef6b6b; }
.risk--md { color: #e2a44a; }
.risk--lo { color: #63c98a; }

/* ============================== toast ============================== */
.toast {
  position: fixed;
  left: 50%;
  bottom: calc(var(--dock-h) + env(safe-area-inset-bottom) + 16px);
  z-index: 150;
  max-width: min(92vw, 460px);
  transform: translateX(-50%);
  padding: 11px 15px;
  font-size: 12.5px;
  color: var(--text);
  background: var(--ink-800);
  border: 1px solid var(--line);
  border-left: 3px solid var(--blue);
  border-radius: var(--r-sm);
  box-shadow: var(--shadow-2);
  animation: rise .2s ease-out;
}
.toast[hidden] { display: none; }
@media (min-width: 1000px) {
  .toast { bottom: 20px; }
}

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

/* Printed reports come from a separate window; keep the console out of print. */
@media print {
  .appbar, .rail, .dock, .stagebar, .vtools, .banner, .sheet { display: none !important; }
}