/* Layout: a one-screen puzzle. The map board is the hero; a quiet instrument
   panel sits beside it on wide screens and below it on phones. The look follows
   The Student Shuffle posters: spaced condensed capitals, thin black hex lines,
   yellow kid tokens, green school reach. */
:root {
  --paper: #f3f5f1;
  --land: #fdfdfb;
  --ink: #16191b;
  --ink-2: #474d52;
  --muted: #7b8287;
  --rule: #d7dbd4;
  --ghost: #e3e6e0;
  --water: #d3e9ef;
  --park: #e4eedb; --park-ink: #4f8a37; --road: #dedad1; --cut: #d2402a;
  --kid: #f2d33f;
  --kid-ink: #3a3000;
  /* Kid tokens: one-hue ramps by street size, same lightness steps in every ramp
     (validated: monotone, visible steps, light end clears the map). */
  /* kids not yet reached: 1, 2, 3, 4, 5, 6-7, 8+ hundred kids */
  --k1: #d3b140; --k2: #c69908; --k3: #b38305; --k4: #a06e01; --k5: #8c5a01; --k6: #774700; --k7: #633600;
  /* kids reached: 1, 2, 3, 4, 5, 6-7, 8+ hundred kids */
  --g1: #8ac377; --g2: #6bb155; --g3: #4d9f34; --g4: #318c17; --g5: #1d7702; --g6: #0f6200; --g7: #094e04;
  /* best district: 1, 2, 3, 4, 5, 6-7, 8+ hundred kids */
  --b1: #9ab1f8; --b2: #809bf0; --b3: #6986e3; --b4: #5571d1; --b5: #445eb8; --b6: #364d9a; --b7: #2a3d7a;
  /* number on each token: 1, 2, 3, 4, 5, 6-7, 8+ hundred kids */
  --t1: #1b1608; --t2: #ffffff; --t3: #ffffff; --t4: #ffffff; --t5: #ffffff; --t6: #ffffff; --t7: #ffffff;
  --reach: #4aa832;
  --reach-soft: rgba(74, 168, 50, 0.2);
  --reach-ink: #ffffff;
  --overlap: #e8761a;
  --magnet: #cf3a87;
  --safe: #2c69cf;
  --cone: #ec7a20;
  --best: #3a56d4;
  --best-soft: rgba(58, 86, 212, 0.18);
  --on-accent: #ffffff;
  --panel: #ffffff;
  --shadow: 0 1px 0 rgba(22, 25, 27, 0.04), 0 10px 30px rgba(22, 25, 27, 0.08);

  --font-display: "Oswald", "Arial Narrow", "Roboto Condensed", "Helvetica Neue", sans-serif;
  --font-ui: "Inter", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --track: 0.32em;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #111416;
    --land: #181c1f;
    --ink: #eceeeb;
    --ink-2: #b4babe;
    --muted: #878e93;
    --rule: #2c3135;
    --ghost: #23282b;
    --water: #142e37;
    --park: #1b2a1d; --park-ink: #74b55a; --road: #2f3337; --cut: #ff6b52;
    --kid: #e8c83a;
    --kid-ink: #2a2200;
    /* kids not yet reached: 1, 2, 3, 4, 5, 6-7, 8+ hundred kids */
    --k1: #854a01; --k2: #9c5f02; --k3: #b37400; --k4: #c98b01; --k5: #dea20b; --k6: #f1bc1c; --k7: #fad86a;
    /* kids reached: 1, 2, 3, 4, 5, 6-7, 8+ hundred kids */
    --g1: #2d6b27; --g2: #35822a; --g3: #439a32; --g4: #58b043; --g5: #73c65c; --g6: #92da7c; --g7: #b3eea0;
    /* best district: 1, 2, 3, 4, 5, 6-7, 8+ hundred kids */
    --b1: #415796; --b2: #4f69b9; --b3: #5f7dd9; --b4: #7392f4; --b5: #8eaafe; --b6: #adc2fe; --b7: #cddafe;
    /* number on each token: 1, 2, 3, 4, 5, 6-7, 8+ hundred kids */
    --t1: #ffffff; --t2: #ffffff; --t3: #ffffff; --t4: #ffffff; --t5: #1b1608; --t6: #1b1608; --t7: #1b1608;
    --reach: #5cc041;
    --reach-soft: rgba(92, 192, 65, 0.22);
    --reach-ink: #0d1a08;
    --overlap: #f08b36;
    --magnet: #e2599f;
    --safe: #4a87ee;
    --cone: #f08b36;
    --best: #7f95ff;
    --best-soft: rgba(127, 149, 255, 0.2);
    --on-accent: #ffffff;
    --panel: #181c1f;
    --shadow: 0 1px 0 rgba(0, 0, 0, 0.3), 0 10px 30px rgba(0, 0, 0, 0.35);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #111416;
  --land: #181c1f;
  --ink: #eceeeb;
  --ink-2: #b4babe;
  --muted: #878e93;
  --rule: #2c3135;
  --ghost: #23282b;
  --water: #142e37;
  --park: #1b2a1d; --park-ink: #74b55a; --road: #2f3337; --cut: #ff6b52;
  --kid: #e8c83a;
  --kid-ink: #2a2200;
  /* kids not yet reached: 1, 2, 3, 4, 5, 6-7, 8+ hundred kids */
  --k1: #854a01; --k2: #9c5f02; --k3: #b37400; --k4: #c98b01; --k5: #dea20b; --k6: #f1bc1c; --k7: #fad86a;
  /* kids reached: 1, 2, 3, 4, 5, 6-7, 8+ hundred kids */
  --g1: #2d6b27; --g2: #35822a; --g3: #439a32; --g4: #58b043; --g5: #73c65c; --g6: #92da7c; --g7: #b3eea0;
  /* best district: 1, 2, 3, 4, 5, 6-7, 8+ hundred kids */
  --b1: #415796; --b2: #4f69b9; --b3: #5f7dd9; --b4: #7392f4; --b5: #8eaafe; --b6: #adc2fe; --b7: #cddafe;
  /* number on each token: 1, 2, 3, 4, 5, 6-7, 8+ hundred kids */
  --t1: #ffffff; --t2: #ffffff; --t3: #ffffff; --t4: #ffffff; --t5: #1b1608; --t6: #1b1608; --t7: #1b1608;
  --reach: #5cc041;
  --reach-soft: rgba(92, 192, 65, 0.22);
  --reach-ink: #0d1a08;
  --overlap: #f08b36;
  --magnet: #e2599f;
  --safe: #4a87ee;
  --cone: #f08b36;
  --best: #7f95ff;
  --best-soft: rgba(127, 149, 255, 0.2);
  --on-accent: #ffffff;
  --panel: #181c1f;
  --shadow: 0 1px 0 rgba(0, 0, 0, 0.3), 0 10px 30px rgba(0, 0, 0, 0.35);
  color-scheme: dark;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { height: 100%; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 15px/1.45 var(--font-ui);
  -webkit-font-smoothing: antialiased;
}
button { font: inherit; color: inherit; }
:focus-visible { outline: 2px solid var(--safe); outline-offset: 2px; }

.app {
  min-height: 100%;
  display: grid;
  grid-template-rows: auto 1fr;
  padding-left: max(16px, env(safe-area-inset-left, 0px));
  padding-right: max(16px, env(safe-area-inset-right, 0px));
  padding-block: 12px 16px;
  max-width: 1280px;
  margin: 0 auto;
  gap: 12px;
}

/* ---------- header */
.top {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 12px 24px;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 12px;
}
.wordmark {
  margin: 0;
  font: 600 22px/1 var(--font-display);
  letter-spacing: var(--track);
  text-transform: uppercase;
  margin-right: calc(-1 * var(--track));
}
.tagline {
  margin: 4px 0 0;
  font-size: 12px;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.today { display: flex; align-items: center; gap: 12px; min-width: 0; justify-self: center; }
.locator { width: 38px; height: 48px; flex: none; }
.locator .city { fill: var(--rule); }
.locator .lake { fill: var(--water); }
.locator .here { fill: var(--reach); stroke: var(--paper); stroke-width: 400; }
.today-text { min-width: 0; }
.eyebrow {
  margin: 0;
  font: 500 11px/1.3 var(--font-ui);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.area {
  margin: 2px 0 0;
  font: 500 24px/1.1 var(--font-display);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-wrap: balance;
}
.top-buttons { display: flex; gap: 4px; }
.icon-btn {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  border: 1px solid transparent;
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
}
.icon-btn:hover { background: var(--ghost); }
.icon-btn:disabled { opacity: 0.3; cursor: default; background: transparent; }
.icon-btn svg { width: 22px; height: 22px; fill: none; stroke: var(--ink); stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.icon-btn svg .dot { fill: var(--ink); stroke: none; }

/* ---------- stage */
.stage {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 320px;
  gap: 20px;
  min-height: 0;
}
.board-wrap {
  position: relative;
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto auto;
  gap: 8px;
  min-height: 0;
  min-width: 0;
}
.board {
  width: 100%;
  height: 100%;
  min-height: 300px;
  display: block;
  touch-action: manipulation;
  user-select: none;
  -webkit-user-select: none;
}
.views { grid-row: 1; }
.board { grid-row: 2; }
.key { grid-row: 3; }
.legend { grid-row: 4; margin: 0; font-size: 12px; color: var(--muted); }
.key { display: flex; flex-wrap: wrap; align-items: center; gap: 6px 14px; margin: 0; font-size: 12px; color: var(--ink-2); }
.key-ramp, .key-on { display: inline-flex; align-items: center; gap: 3px; }
.key-on { gap: 6px; }
.key-feats { display: inline-flex; flex-wrap: wrap; gap: 4px 12px; }
.key-feats:empty { display: none; }
.feat { display: inline-flex; align-items: center; gap: 5px; white-space: nowrap; }
.feat svg { width: 18px; height: 18px; flex: none; }
.key i { font-style: normal; display: inline-grid; place-items: center; min-width: 22px; height: 22px; padding: 0 5px; border-radius: 11px; font: 700 11px/1 var(--font-ui); font-variant-numeric: tabular-nums; }
.key i.b1 { background: var(--k1); color: var(--t1); } .key i.on.b1 { background: var(--g1); }
.key i.b2 { background: var(--k2); color: var(--t2); } .key i.on.b2 { background: var(--g2); }
.key i.b3 { background: var(--k3); color: var(--t3); } .key i.on.b3 { background: var(--g3); }
.key i.b4 { background: var(--k4); color: var(--t4); } .key i.on.b4 { background: var(--g4); }
.key i.b5 { background: var(--k5); color: var(--t5); } .key i.on.b5 { background: var(--g5); }
.key i.b6 { background: var(--k6); color: var(--t6); } .key i.on.b6 { background: var(--g6); }
.key i.b7 { background: var(--k7); color: var(--t7); } .key i.on.b7 { background: var(--g7); }

.views {
  display: inline-flex;
  justify-self: start;
  border: 1px solid var(--rule);
  border-radius: 999px;
  padding: 3px;
  background: var(--panel);
  gap: 2px;
}
.view-btn {
  border: 0;
  background: transparent;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink-2);
  cursor: pointer;
}
.view-btn[aria-pressed="true"] { background: var(--ink); color: var(--paper); }

/* ---------- board drawing (sizes are in board feet; one street is ~3,048 ft) */
.board .bg { fill: var(--paper); }
.board .city { fill: var(--land); }
.board .lake, .board .water { fill: var(--water); }
.board .ghost { stroke: var(--ghost); stroke-width: 70; fill: none; }
.board .park { fill: var(--park); }
.board .road { stroke: var(--road); stroke-width: 300; fill: none; stroke-linecap: round; stroke-linejoin: round; }
.board .route-line { stroke: var(--safe); stroke-width: 45; fill: none; opacity: 0.28; stroke-dasharray: 120 140; }
.board .rail-case { stroke: var(--land); stroke-width: 200; fill: none; opacity: 0.85; }
.board .rail { stroke-width: 120; fill: none; stroke-dasharray: 420 170; }
.board .cut-gap { stroke: var(--land); stroke-width: 120; }
.board .cut { stroke: var(--cut); stroke-width: 110; stroke-linecap: round; }
.board .badge-bg { fill: var(--land); stroke: var(--park-ink); stroke-width: 55; }
.board .street { stroke: var(--ink-2); stroke-width: 60; fill: none; stroke-linecap: round; }
.board .reach { stroke: var(--reach); stroke-width: 420; stroke-linecap: round; opacity: 0.4; fill: none; }
.board .reach.best { stroke: var(--best); }
.board .preview { stroke: var(--reach); stroke-width: 170; stroke-dasharray: 1 300; stroke-linecap: round; fill: none; opacity: 0.9; }
.board .corner { fill: var(--ink-2); }
.board .kid circle { fill: var(--k4); stroke: var(--land); stroke-width: 60; }
.board .kid text {
  fill: var(--t4);
  font: 700 560px var(--font-ui);
  text-anchor: middle;
  dominant-baseline: central;
  font-variant-numeric: tabular-nums;
}
.board .kid.zero circle { fill: var(--rule); stroke: none; }
/* token color = street size (b1..b7); hue = not reached (amber), reached (green), best district (blue) */
.board .kid.b1 circle { fill: var(--k1); } .board .kid.b1 text { fill: var(--t1); } .board .kid.on.b1 circle { fill: var(--g1); } .board .kid.on.best.b1 circle { fill: var(--b1); }
.board .kid.b2 circle { fill: var(--k2); } .board .kid.b2 text { fill: var(--t2); } .board .kid.on.b2 circle { fill: var(--g2); } .board .kid.on.best.b2 circle { fill: var(--b2); }
.board .kid.b3 circle { fill: var(--k3); } .board .kid.b3 text { fill: var(--t3); } .board .kid.on.b3 circle { fill: var(--g3); } .board .kid.on.best.b3 circle { fill: var(--b3); }
.board .kid.b4 circle { fill: var(--k4); } .board .kid.b4 text { fill: var(--t4); } .board .kid.on.b4 circle { fill: var(--g4); } .board .kid.on.best.b4 circle { fill: var(--b4); }
.board .kid.b5 circle { fill: var(--k5); } .board .kid.b5 text { fill: var(--t5); } .board .kid.on.b5 circle { fill: var(--g5); } .board .kid.on.best.b5 circle { fill: var(--b5); }
.board .kid.b6 circle { fill: var(--k6); } .board .kid.b6 text { fill: var(--t6); } .board .kid.on.b6 circle { fill: var(--g6); } .board .kid.on.best.b6 circle { fill: var(--b6); }
.board .kid.b7 circle { fill: var(--k7); } .board .kid.b7 text { fill: var(--t7); } .board .kid.on.b7 circle { fill: var(--g7); } .board .kid.on.best.b7 circle { fill: var(--b7); }
.board .kid.twice circle { stroke: var(--overlap); stroke-width: 140; }

.board .hit { fill: transparent; cursor: pointer; }
.board.locked .hit { cursor: default; }
.board .hit.ok:hover, .board .hit.ok:focus-visible { fill: var(--reach-soft); }
.board .hit.no:hover { fill: var(--ghost); fill-opacity: 0.6; }
.board .hit:focus-visible { outline: none; stroke: var(--safe); stroke-width: 80; }
.board .gain rect { fill: var(--ink); }
.board .gain text { fill: var(--paper); font: 700 520px var(--font-ui); text-anchor: middle; dominant-baseline: central; }
.board .real rect { fill: var(--land); stroke: var(--ink); stroke-width: 90; }
.board .real text { fill: var(--ink); font: 600 400px var(--font-ui); paint-order: stroke; stroke: var(--land); stroke-width: 120; stroke-linejoin: round; }
.board .ring { fill: none; stroke: var(--magnet); stroke-width: 160; }
.board .ring.best { stroke: var(--best); }
.pop { animation: pop 0.22s ease-out; transform-box: fill-box; transform-origin: center; }
@keyframes pop { from { transform: scale(0.6); opacity: 0.4; } to { transform: scale(1); opacity: 1; } }

/* icon symbols (shared by the board, the piece buttons and the rules) */
.sym-disc { fill: var(--disc, var(--ink)); }
.sym-legs { stroke: var(--ink); stroke-width: 0.16; stroke-linecap: round; fill: none; }
.sym-tree { fill: var(--park-ink); }
.sym-street { stroke: var(--ink-2); stroke-width: 0.14; }
.sym-cutbar { stroke: var(--cut); stroke-width: 0.26; stroke-linecap: round; }
.sym-kid { fill: var(--k4); }
.sym-kid-ink { fill: var(--t4); }
.sym-light { fill: var(--land); }
.sym-ink { fill: var(--ink); }
.sym-magnet { fill: var(--magnet); }
.sym-safe { fill: var(--safe); }
.sym-stripe { fill: var(--on-accent); }
.sym-cone { fill: var(--cone); }
.sym-ring { fill: var(--land); stroke: var(--cone); stroke-width: 0.1; }
.sym-closed { fill: var(--land); stroke: var(--ink-2); stroke-width: 0.14; }
.sym-slash { stroke: var(--ink-2); stroke-width: 0.14; }
.sym-faint { fill: var(--rule); }
.sym-best { --disc: var(--best); }

/* ---------- dock */
.dock {
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: 16px;
  padding: 18px;
  box-shadow: var(--shadow);
  align-self: start;
  min-width: 0;
}
.score .label {
  margin: 0;
  font: 500 11px/1 var(--font-ui);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--muted);
}
.score .big {
  margin: 6px 0 0;
  font: 500 46px/1 var(--font-display);
  letter-spacing: 0.02em;
  font-variant-numeric: tabular-nums;
}
.score .sub { margin: 4px 0 0; color: var(--ink-2); font-size: 13px; }
.score .waste { margin: 4px 0 0; color: var(--overlap); font-size: 13px; min-height: 1.2em; }
.bump { animation: bump 0.25s ease-out; }
@keyframes bump { 40% { transform: translateY(-2px); } }

.pieces { display: grid; gap: 8px; }
.piece {
  display: grid;
  grid-template-columns: 36px 1fr auto;
  align-items: center;
  gap: 10px;
  text-align: left;
  padding: 8px 12px 8px 8px;
  border: 1.5px solid var(--rule);
  border-radius: 12px;
  background: var(--land);
  cursor: pointer;
}
.piece:hover { border-color: var(--ink-2); }
.piece[aria-pressed="true"] { border-color: var(--ink); box-shadow: inset 0 0 0 1px var(--ink); }
.piece:disabled { opacity: 0.45; cursor: default; }
.piece svg { width: 32px; height: 32px; }
.piece .name { font-weight: 600; font-size: 14px; }
.piece .tip { display: block; font-size: 12px; color: var(--muted); font-weight: 400; line-height: 1.3; }
.piece .left {
  font: 500 18px/1 var(--font-display);
  font-variant-numeric: tabular-nums;
  min-width: 2ch;
  text-align: right;
}

.checks { display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 10px; }
.pips { display: flex; gap: 5px; }
.pips i { width: 10px; height: 10px; border-radius: 50%; border: 1.5px solid var(--ink-2); }
.pips i.used { background: var(--ink-2); }
.btn {
  border: 1.5px solid var(--ink);
  background: var(--land);
  border-radius: 999px;
  padding: 9px 16px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
}
.btn.primary { background: var(--ink); color: var(--paper); }
.btn.ghost { border-color: var(--rule); }
.btn:disabled { opacity: 0.4; cursor: default; }
.btn.wide { width: 100%; }
.hint { margin: 0; font-size: 13px; color: var(--ink-2); min-height: 2.6em; }
.history { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; }
.history:empty { display: none; }
.history li {
  display: grid;
  grid-template-columns: 14px auto 1fr;
  gap: 8px;
  align-items: center;
  font-size: 13px;
  color: var(--ink-2);
  font-variant-numeric: tabular-nums;
}
.history li b { color: var(--ink); text-align: right; }
.sq { width: 12px; height: 12px; border-radius: 3px; background: var(--rule); }
.sq.s100 { background: var(--reach); }
.sq.s95 { background: var(--kid); }
.sq.s85 { background: var(--overlap); }

/* ---------- toast & dialogs */
.toast {
  position: fixed;
  left: 50%;
  bottom: calc(24px + env(safe-area-inset-bottom, 0px));
  transform: translate(-50%, 20px);
  background: var(--ink);
  color: var(--paper);
  padding: 10px 16px;
  border-radius: 999px;
  font-size: 14px;
  font-weight: 500;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s, transform 0.2s;
  max-width: calc(100vw - 32px);
  text-align: center;
  z-index: 20;
}
.toast.show { opacity: 1; transform: translate(-50%, 0); }

.dlg {
  width: min(480px, calc(100vw - 32px));
  max-height: calc(100vh - 48px);
  border: 1px solid var(--rule);
  border-radius: 18px;
  background: var(--panel);
  color: var(--ink);
  padding: 24px;
  box-shadow: var(--shadow);
}
.dlg::backdrop { background: rgba(10, 12, 14, 0.45); }
.dlg-close { position: absolute; top: 10px; right: 10px; margin: 0; }
.dlg-title {
  margin: 0 40px 10px 0;
  font: 500 24px/1.15 var(--font-display);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-wrap: balance;
}
.dlg h3 { font-size: 13px; letter-spacing: 0.1em; text-transform: uppercase; color: var(--muted); margin: 18px 0 8px; font-weight: 600; }
.dlg p { margin: 0 0 12px; }
.lede { font-size: 16px; }
.small { font-size: 12.5px; color: var(--muted); }
.rules { list-style: none; padding: 0; margin: 0 0 14px; display: grid; gap: 10px; }
.rules li { display: grid; grid-template-columns: 30px 1fr; gap: 12px; align-items: start; font-size: 14px; }
.rules .ico { width: 28px; height: 28px; }
.row { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 8px; }
.res-big { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; }
.res-big #res-pct { font: 500 56px/1 var(--font-display); font-variant-numeric: tabular-nums; }
.res-of { color: var(--ink-2); }
.share {
  font: 14px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 10px;
  padding: 10px 12px;
  white-space: pre-wrap;
  margin: 0 0 12px;
  user-select: all;
}
.irl { border-top: 1px solid var(--rule); margin-top: 8px; }
.irl-more { margin: 0 0 12px; font-size: 13px; }
.irl-more summary { cursor: pointer; color: var(--ink-2); margin-bottom: 6px; }
.next { margin: 16px 0 0; font-size: 13px; color: var(--muted); }
.stat-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px; text-align: center; }
.stat-grid b { display: block; font: 500 34px/1.1 var(--font-display); font-variant-numeric: tabular-nums; }
.stat-grid span { font-size: 11.5px; color: var(--muted); }
.dist { display: grid; gap: 6px; }
.dist .bar { display: grid; grid-template-columns: 24px 1fr; gap: 8px; align-items: center; font-size: 13px; font-variant-numeric: tabular-nums; }
.dist .fill { background: var(--ink-2); color: var(--paper); border-radius: 4px; padding: 2px 8px; text-align: right; min-width: 28px; font-weight: 600; }
.dist .fill.hi { background: var(--reach); color: var(--reach-ink); }

/* ---------- phone: board first, then a compact control strip that fits on one screen */
@media (max-width: 860px) {
  .app { gap: 8px; padding-block: 8px 12px; grid-template-rows: auto auto; align-content: start; }
  .top { grid-template-columns: 1fr auto; gap: 6px 12px; padding-bottom: 8px; }
  .wordmark { font-size: 18px; }
  .tagline { display: none; }
  .today { grid-column: 1 / -1; grid-row: 2; justify-self: start; gap: 10px; }
  .locator { width: 28px; height: 36px; }
  .area { font-size: 20px; }
  .icon-btn { width: 34px; height: 34px; }
  .stage { grid-template-columns: minmax(0, 1fr); gap: 10px; }
  .board-wrap { gap: 6px; }
  .board { min-height: 0; height: auto; aspect-ratio: 1 / 1; max-height: 52vh; }
  .legend { display: none; }
  .key { font-size: 11px; gap: 4px 10px; }
  .key i { min-width: 18px; height: 18px; font-size: 10px; padding: 0 4px; }
  .key-feats { gap: 2px 10px; }
  .feat svg { width: 14px; height: 14px; }
  .dock {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas: "score checks" "pieces pieces" "hint hint" "history history" "result result";
    padding: 12px;
    gap: 10px;
    border-radius: 14px;
  }
  .score { grid-area: score; }
  .score .big { font-size: 32px; margin-top: 2px; }
  .score .sub { font-size: 12px; margin-top: 2px; }
  .score .waste { font-size: 12px; min-height: 0; }
  .checks { grid-area: checks; grid-template-columns: auto; justify-items: end; align-self: start; gap: 6px; }
  .checks .btn { padding: 8px 14px; }
  .checks .ghost { padding: 4px 10px; font-size: 12.5px; border: 0; color: var(--muted); }
  .pieces { grid-area: pieces; grid-template-columns: repeat(auto-fit, minmax(0, 1fr)); gap: 6px; }
  .piece { grid-template-columns: 26px 1fr; grid-template-rows: auto auto; padding: 6px 8px; gap: 0 6px; border-radius: 10px; }
  .piece svg { width: 26px; height: 26px; grid-row: 1 / 3; }
  .piece .name { font-size: 12.5px; line-height: 1.2; }
  .piece .tip { display: none; }
  .piece .left { font-size: 13px; text-align: left; color: var(--muted); }
  .hint { grid-area: hint; min-height: 0; font-size: 12.5px; }
  .history { grid-area: history; }
  #btn-result { grid-area: result; }
}
@media (min-width: 861px) {
  .app { height: 100%; min-height: 560px; }
}
@media (prefers-reduced-motion: reduce) {
  .pop, .bump { animation: none; }
  .toast { transition: none; }
}