:root {
  --paper: #FFFFFF;
  --paper-2: #F5F5F3;
  --ink: #141414;
  --ink-soft: #4A4740;
  --red: #E4262D;
  --blue: #2563B0;
  --yellow: #F6CF1D;
  --white: #FBFAF6;
  --orange: #F2721C;
  --green: #1F9D5B;
  --serif: 'Instrument Serif', 'Times New Roman', Georgia, serif;
  --sans: 'Satoshi', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  --safe-t: env(safe-area-inset-top, 0px);
  --safe-b: env(safe-area-inset-bottom, 0px);
  --safe-l: env(safe-area-inset-left, 0px);
  --safe-r: env(safe-area-inset-right, 0px);
  --spring: cubic-bezier(.3, 1.5, .5, 1);
  --bar-h: 64px;

  /* theme tokens — themes.css overrides these (Classic = the defaults) */
  --surface: #fff;            /* fields, light cards, track backgrounds */
  --surface-2: var(--white);  /* buttons */
  --on-ink: #fff;             /* text on ink-coloured buttons */
  --body: var(--ink);         /* cube body */
  --c-white: #fff; --c-yellow: var(--yellow); --c-black: var(--ink); --c-blue: var(--blue); --c-green: var(--green);
  --on-black: #fff; --on-blue: #fff; --on-green: #fff;
  --card-r: 22px; --card-bw: 2px; --card-shadow: 6px 6px 0 var(--ink);
  --face-r: 9%; --st-r: 14%; --st-in: 7%;
  --accent: var(--yellow);    /* the yellow of buttons, sliders, highlights */
  --on-accent: #141414;
  --dw: 400;                  /* weight of display text */

  /* page background — switch with ?bg=<name> (see the list below) */
  --bg: #F4EFE6;
  /* top bar + side panel: the page colour, lifted towards white */
  --chrome: color-mix(in srgb, var(--bg) 45%, white);
}
html[data-bg="white"]  { --bg: #FFFFFF; }
html[data-bg="paper"]  { --bg: #F5F5F3; }
html[data-bg="cream"]  { --bg: #F4EFE6; }
html[data-bg="butter"] { --bg: #FBF3D2; }
html[data-bg="mist"]   { --bg: #E8EFF7; }
html[data-bg="sage"]   { --bg: #E6EEE3; }
html[data-bg="blush"]  { --bg: #F9E8E2; }
html[data-bg="lilac"]  { --bg: #ECE8F8; }

* { box-sizing: border-box; }

html, body {
  height: 100%;
  margin: 0;
  overflow: hidden;
  background: var(--bg);
  color: var(--ink);
  font: 500 15px/1.45 var(--sans);
  -webkit-tap-highlight-color: transparent;
  -webkit-user-select: none;
  user-select: none;
  overscroll-behavior: none;
}

h2, p { margin: 0; }
button { font-family: inherit; cursor: pointer; color: inherit; }
button:focus-visible { outline: 3px solid var(--blue); outline-offset: 2px; }
button:disabled { opacity: .38; cursor: default; pointer-events: none; }

/* ---------- 3D stage ----------
   game.js fits this box between the top bar and the panel, so the cube
   (even when zoomed) is clipped at the panel edge and never goes under a card. */

#stage {
  position: fixed;
  inset: 0;
  z-index: 0;
  perspective: 1800px;
  touch-action: none;
  cursor: grab;
  overflow: hidden;
}
#stage.grabbing { cursor: grabbing; }

#world {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 0;
  height: 0;
  transform-style: preserve-3d;
}

#shadow {
  position: absolute;
  left: 50%;
  top: 50%;
  width: calc(var(--size, 300px) * 1.45);
  height: calc(var(--size, 300px) * .3);
  background: radial-gradient(closest-side, rgba(20, 20, 20, .38), rgba(20, 20, 20, 0));
  filter: blur(4px);
  pointer-events: none;
}

.cubie {
  position: absolute;
  left: calc(var(--s) * -.5);
  top: calc(var(--s) * -.5);
  width: var(--s);
  height: var(--s);
  transform-style: preserve-3d;
}

.face {
  position: absolute;
  inset: 0;
  background: var(--body);
  border-radius: var(--face-r);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}
.f-pz { transform: translateZ(calc(var(--s) / 2)); }
.f-nz { transform: rotateY(180deg) translateZ(calc(var(--s) / 2)); }
.f-px { transform: rotateY(90deg) translateZ(calc(var(--s) / 2)); }
.f-nx { transform: rotateY(-90deg) translateZ(calc(var(--s) / 2)); }
.f-py { transform: rotateX(-90deg) translateZ(calc(var(--s) / 2)); }
.f-ny { transform: rotateX(90deg) translateZ(calc(var(--s) / 2)); }

.sticker {
  position: absolute;
  inset: var(--st-in);
  border-radius: var(--st-r);
  background: var(--c);
  box-shadow: inset 0 -4px 0 rgba(0, 0, 0, .08), inset 0 3px 0 rgba(255, 255, 255, .25);
}

@keyframes pop { 40% { transform: scale(1.14); } }
.pop .f-pz .sticker { animation: pop .6s var(--spring); }

/* ---------- top bar ---------- */

#barbg {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: calc(var(--safe-t) + var(--bar-h));
  z-index: 1;
  background: var(--chrome);
  border-bottom: 2px solid var(--ink);
  pointer-events: none;
}

.top {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 3;
  height: calc(var(--safe-t) + var(--bar-h));
  display: flex;
  align-items: center;
  gap: 12px;
  padding: var(--safe-t) calc(var(--safe-r) + 20px) 0 calc(var(--safe-l) + 20px);
  pointer-events: none;
}
.top > * { pointer-events: auto; }
.brand { display: flex; align-items: center; gap: 10px; margin-right: auto; }
.logo {
  width: 36px;
  height: 36px;
  padding: 6px;
  display: grid;
  grid-template: 1fr 1fr / 1fr 1fr;
  gap: 3px;
  background: var(--ink);
  border-radius: 11px;
}
.logo i { border-radius: 3px; }
.brand-name { font: var(--dw) 26px/1 var(--serif); letter-spacing: -.01em; }

.chip {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  background: var(--ink);
  color: var(--on-ink);
  border-radius: 999px;
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
  min-width: 0;
  max-width: 100%;
  overflow: hidden;
  text-overflow: ellipsis;
}
.dot { width: 9px; height: 9px; border-radius: 50%; background: #888; }
.dot.ok { background: var(--green); }
.dot.red { background: var(--red); }
.dot.yel { background: var(--yellow); }

.round {
  width: 40px;
  height: 40px;
  padding: 0;
  display: grid;
  place-items: center;
  font-size: 17px;
  font-weight: 700;
  background: var(--surface-2);
  border: 2px solid var(--ink);
  border-radius: 50%;
  box-shadow: 3px 3px 0 var(--ink);
  transition: transform .12s, box-shadow .12s;
}
.round.wide { display: inline-flex; align-items: center; justify-content: center; width: auto; padding: 0 14px; gap: 8px; border-radius: 999px; font-size: 13px; }
.round.wide .lbl { font-weight: 700; }
.tools .minis { grid-template-columns: repeat(4, 1fr); }
.tools .mini { padding: 8px 2px; font-size: 12px; }
.mini.accent { background: var(--accent); color: var(--on-accent); }
@media (max-width: 520px) { .round.wide { width: 38px; padding: 0; } .round.wide .lbl { display: none; } }
#btn-sound .slash { display: none; }
#btn-sound.muted .waves { display: none; }
#btn-sound.muted .slash { display: block; }
.round:hover { transform: translate(-2px, -2px); box-shadow: 5px 5px 0 var(--ink); }
.round:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--ink); }

/* ---------- phone stats (shown instead of the stat cards) ---------- */

.mhud {
  display: none;
  position: fixed;
  z-index: 3;
  gap: 10px;
  pointer-events: none;
}
.mstat {
  flex: 1;
  padding: 6px 10px 7px;
  text-align: center;
  background: var(--surface);
  border: 2px solid var(--ink);
  border-radius: 14px;
  box-shadow: 3px 3px 0 var(--ink);
}
.mstat:nth-child(2) { background: var(--c-yellow); }
.mstat b { display: block; font: var(--dw) 26px/1.05 var(--serif); font-variant-numeric: tabular-nums; }
.mstat span { font-size: 10px; font-weight: 700; letter-spacing: .1em; text-transform: uppercase; color: var(--ink-soft); }

/* ---------- the panel: every card, aligned in one place ---------- */

.panel {
  position: fixed;
  z-index: 2;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background: var(--chrome);
  overflow-y: auto;
  overscroll-behavior: contain;
}

.stats { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }

.card {
  width: 100%;
  padding: 18px 20px;
  border: var(--card-bw) solid var(--ink);
  border-radius: var(--card-r);
  box-shadow: var(--card-shadow);
  transition: transform .45s var(--spring);
}
.card:hover { transform: translateY(-3px); }
.card.white { background: var(--c-white); }
.card.yellow { background: var(--c-yellow); }
.card.black { background: var(--c-black); color: var(--on-black); }
.card.blue { background: var(--c-blue); color: var(--on-blue); }

.stats .card { display: flex; flex-direction: column; gap: 12px; padding: 14px 16px; box-shadow: 5px 5px 0 var(--ink); }
.stat b { display: block; font-weight: 400; }
.num { font: var(--dw) 38px/1 var(--serif); font-variant-numeric: tabular-nums; letter-spacing: -.01em; }
.stat span { font-size: 13px; color: var(--ink-soft); }
.card.yellow .stat span { color: #3b3510; }

.eyebrow { font-size: 11px; font-weight: 700; letter-spacing: .14em; text-transform: uppercase; opacity: .7; }

.puzzle h2 { margin-top: 6px; font: var(--dw) 44px/1 var(--serif); letter-spacing: -.01em; }
.detail { margin-top: 4px; font-size: 13px; color: #bdb8ad; font-variant-numeric: tabular-nums; }
.bar {
  height: 10px;
  margin: 16px 0;
  background: #333;
  border-radius: 999px;
  overflow: hidden;
}
.bar i {
  display: block;
  height: 100%;
  background: linear-gradient(90deg, var(--red), var(--orange), var(--accent), var(--green), var(--blue));
  clip-path: inset(0 0 0 0 round 999px);
  transition: clip-path .3s ease-out;
}
.scramble {
  width: 100%;
  padding: 13px 16px;
  font-size: 16px;
  font-weight: 700;
  color: var(--on-accent);
  background: var(--accent);
  border: 2px solid var(--accent);
  border-radius: 14px;
  transition: background .15s, color .15s, transform .12s;
}
.scramble:hover { background: transparent; color: var(--accent); }
.scramble:active { transform: scale(.97); }
.helper { margin-top: 12px; font-size: 12px; color: #8d8a82; text-align: center; }

.options { display: flex; flex-direction: column; gap: 10px; }
.options .eyebrow { margin-bottom: 2px; }

.seg {
  display: flex;
  gap: 2px;
  padding: 3px;
  background: var(--surface);
  border: 2px solid var(--ink);
  border-radius: 999px;
}
.seg button {
  flex: 1;
  padding: 6px 8px;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  background: transparent;
  border: 0;
  border-radius: 999px;
  transition: background .15s, color .15s;
}
.seg button:hover { background: var(--paper-2); }
.seg button.on { background: var(--ink); color: var(--on-ink); }

.minis { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin-top: 2px; }
.mini {
  white-space: nowrap;
  padding: 8px 4px;
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  background: var(--surface-2);
  border: 2px solid var(--ink);
  border-radius: 12px;
  box-shadow: 3px 3px 0 var(--ink);
  transition: transform .12s, box-shadow .12s;
}
.mini:hover { transform: translate(-2px, -2px); box-shadow: 5px 5px 0 var(--ink); }
.mini:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--ink); }

/* ---------- toast / overlays ---------- */

#toast {
  position: fixed;
  z-index: 4;
  top: calc(var(--safe-t) + var(--bar-h) + 14px);
  left: 50%;
  padding: 9px 18px;
  transform: translate(-50%, -8px);
  opacity: 0;
  color: var(--on-ink);
  background: var(--ink);
  border-radius: 999px;
  box-shadow: 4px 4px 0 var(--red);
  font-size: 14px;
  font-weight: 700;
  pointer-events: none;
  transition: opacity .25s, transform .25s var(--spring);
}
#toast.show { opacity: 1; transform: translate(-50%, 0); }

.overlay {
  position: fixed;
  inset: 0;
  z-index: 10;
  display: grid;
  place-items: center;
  padding: 20px;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  animation: fade .2s ease-out;
}
.overlay[hidden] { display: none; }
.sheet {
  width: min(440px, 100%);
  max-height: 100%;
  overflow: auto;
  padding: 28px 26px;
  text-align: center;
  background: var(--surface);
  border: 2px solid var(--ink);
  border-radius: 22px;
  box-shadow: 8px 8px 0 var(--ink);
  animation: popin .4s var(--spring);
}
.sheet h2 { font: var(--dw) 40px/1 var(--serif); letter-spacing: -.01em; }
.sheet .big { margin: 8px 0 4px; font: var(--dw) 76px/1 var(--serif); font-variant-numeric: tabular-nums; }
.sheet p { color: var(--ink-soft); }
.sheet ul { margin: 16px 0 22px; padding: 0; list-style: none; text-align: left; color: var(--ink-soft); }
.sheet li { padding: 8px 0; border-top: 2px dashed #e4e4e0; }
.sheet li:first-child { border-top: 0; }
.sheet li b { color: var(--ink); }
.sheet #win-info { margin-bottom: 22px; }

kbd {
  padding: 1px 6px;
  font: 700 12px ui-monospace, Consolas, monospace;
  color: var(--ink);
  background: var(--paper-2);
  border: 1.5px solid var(--ink);
  border-radius: 6px;
}

.btn {
  padding: 14px 22px;
  font-size: 15px;
  font-weight: 700;
  border: 2px solid var(--ink);
  border-radius: 14px;
  transition: transform .12s, box-shadow .12s;
}
.btn.dark { color: var(--on-ink); background: var(--ink); box-shadow: 4px 4px 0 var(--red); }
.btn:hover { transform: translate(-2px, -2px); box-shadow: 6px 6px 0 var(--red); }
.btn:active { transform: translate(2px, 2px); box-shadow: 2px 2px 0 var(--red); }

@keyframes fade { from { opacity: 0; } }
@keyframes popin { from { opacity: 0; transform: scale(.9) translateY(10px) rotate(-2deg); } }

@media (pointer: coarse) { .kbd { display: none; } }

/* ---------- speed slider, tools card, tool views ---------- */

.card.green { background: var(--c-green); color: var(--on-green); }
.tools { display: flex; flex-direction: column; gap: 10px; }
.tools .eyebrow { margin-bottom: 2px; }

.speed {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 10px;
  font-size: 13px;
  font-weight: 700;
}
.speed output { min-width: 62px; text-align: right; }
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 24px;
  margin: 0;
  background: transparent;
  cursor: pointer;
}
input[type="range"]::-webkit-slider-runnable-track {
  height: 8px;
  background: linear-gradient(to right, var(--accent) var(--p, 50%), #fff var(--p, 50%));   /* filled part = chosen speed */
  border: 2px solid var(--ink);
  border-radius: 999px;
}
input[type="range"]::-moz-range-track {
  height: 8px;
  background: var(--surface);
  border: 2px solid var(--ink);
  border-radius: 999px;
}
input[type="range"]::-moz-range-progress {
  height: 8px;
  background: var(--accent);
  border-radius: 999px;
}
input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 22px;
  height: 22px;
  margin-top: -9px;
  background: var(--accent);
  border: 2px solid var(--ink);
  border-radius: 50%;
  box-shadow: 2px 2px 0 var(--ink);
}
input[type="range"]::-moz-range-thumb {
  width: 18px;
  height: 18px;
  background: var(--accent);
  border: 2px solid var(--ink);
  border-radius: 50%;
  box-shadow: 2px 2px 0 var(--ink);
}
input[type="range"]:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; border-radius: 999px; }

/* a tool view replaces the puzzle / options / tools cards while it is open */
.tool { display: none; }
#dock[data-view="solver"] .tool-solver,
#dock[data-view="patterns"] .tool-patterns,
#dock[data-view="moves"] .tool-moves { display: block; }
#dock:not([data-view="main"]) .main { display: none; }

.tool-head { display: flex; align-items: center; justify-content: space-between; margin-bottom: 10px; }
.tool-head h3 { margin: 0; font: var(--dw) 32px/1 var(--serif); letter-spacing: -.01em; }
.round.sm { width: 32px; height: 32px; font-size: 14px; box-shadow: 2px 2px 0 var(--ink); }
.tool-info { font-size: 14px; font-weight: 700; }
.tool-note { margin-top: 10px; font-size: 12px; color: var(--ink-soft); }

.mvs {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  max-height: 150px;
  margin: 10px 0 14px;
  padding: 2px;
  overflow-y: auto;
}
.mv {
  padding: 3px 9px;
  font-size: 14px;
  font-weight: 700;
  background: var(--surface-2);
  border: 2px solid var(--ink);
  border-radius: 10px;
}
.mv.next { background: var(--accent); }

.tool-actions { display: flex; gap: 10px; }
.btn.sm { padding: 10px 16px; font-size: 14px; }
.btn.light { color: var(--ink); background: var(--surface-2); box-shadow: 4px 4px 0 var(--ink); }
.btn.light:hover { box-shadow: 6px 6px 0 var(--ink); }
.btn.light:active { box-shadow: 2px 2px 0 var(--ink); }
.btn:disabled { opacity: .38; }

.pat-list { display: flex; flex-direction: column; gap: 10px; }
.pat {
  display: block;
  width: 100%;
  padding: 10px 14px;
  text-align: left;
  background: var(--surface-2);
  border: 2px solid var(--ink);
  border-radius: 14px;
  box-shadow: 3px 3px 0 var(--ink);
  transition: transform .12s, box-shadow .12s;
}
.pat b { display: block; font-size: 15px; }
.pat span { font-size: 12px; color: var(--ink-soft); }
.pat:hover { transform: translate(-2px, -2px); box-shadow: 5px 5px 0 var(--ink); }
.pat:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--ink); }

.movegrid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 6px; }
.movegrid .mini { padding: 7px 0; box-shadow: 2px 2px 0 var(--ink); }
.moveform { display: flex; gap: 8px; margin-top: 12px; }
.moveform input {
  flex: 1;
  min-width: 0;
  padding: 9px 12px;
  font: 700 15px ui-monospace, Consolas, monospace;
  color: var(--ink);
  background: var(--surface);
  border: 2px solid var(--ink);
  border-radius: 12px;
  -webkit-user-select: text;
  user-select: text;
}
.moveform input:focus-visible { outline: 3px solid var(--blue); outline-offset: 1px; }

/* ======================================================================
   Layout A — desktop: cube on the left, one aligned panel on the right
   ====================================================================== */
@media (min-width: 1100px) and (min-height: 560px) {
  .panel {
    top: calc(var(--safe-t) + var(--bar-h));
    right: 0;
    bottom: 0;
    width: clamp(330px, 26vw, 390px);
    padding: 20px 24px 26px 22px;
    border-left: 2px solid var(--ink);
  }
}
@media (min-width: 1100px) and (min-height: 560px) and (max-height: 780px) {
  .panel { gap: 10px; padding-top: 10px; padding-bottom: 16px; }
  .card { padding: 11px 16px; }
  .stats .card { gap: 6px; padding: 10px 12px; }
  .num { font-size: 30px; }
  .puzzle h2 { margin-top: 2px; font-size: 32px; }
  .bar { margin: 8px 0; }
  .scramble { padding: 10px 14px; }
  .helper { display: none; }
  .options, .tools { gap: 6px; }
  .options .eyebrow, .tools .eyebrow { margin-bottom: 0; }
  .speed { font-size: 12px; }
  .tool-head h3 { font-size: 28px; }
}

/* ======================================================================
   Layout C — portrait phone / tablet: stats under the top bar, panel at the bottom
   ====================================================================== */
@media not all and (min-width: 1100px) and (min-height: 560px) {
  :root { --bar-h: 56px; }
  .stats { display: none; }
  .chip { display: flex; }
  .top { padding-left: calc(var(--safe-l) + 14px); padding-right: calc(var(--safe-r) + 14px); gap: 8px; }
  .round { width: 38px; height: 38px; }
  .mhud {
    display: flex;
    top: calc(var(--safe-t) + var(--bar-h) + 10px);
    left: calc(var(--safe-l) + 14px);
    right: calc(var(--safe-r) + 14px);
  }
  .panel {
    left: 0;
    right: 0;
    bottom: 0;
    gap: 12px;
    overflow: visible;
    padding: 14px calc(var(--safe-r) + 14px) calc(var(--safe-b) + 14px) calc(var(--safe-l) + 14px);
    border-top: 2px solid var(--ink);
  }
  .card { padding: 12px 16px; border-radius: 18px; box-shadow: 4px 4px 0 var(--ink); }
  .card:hover { transform: none; }
  .puzzle {
    display: grid;
    grid-template-columns: 1fr auto;
    grid-template-areas: "state btn" "bar btn";
    align-items: center;
    gap: 4px 16px;
  }
  .puzzle .eyebrow, .puzzle .detail, .puzzle .helper { display: none; }
  .puzzle h2 { grid-area: state; margin: 0; font-size: 30px; }
  .puzzle .bar { grid-area: bar; margin: 4px 0 0; }
  .puzzle .scramble { grid-area: btn; width: auto; padding: 14px 20px; }
  .options { display: grid; grid-template-columns: 1.1fr 1fr; gap: 8px 10px; align-items: center; }
  .options .eyebrow, .tools .eyebrow { display: none; }
  .options .minis { grid-column: 1 / -1; margin: 0; }
  .speed { grid-template-columns: 1fr auto; gap: 0 6px; }
  .speed span { display: none; }
  .speed output { min-width: 40px; font-size: 12px; }
  .seg button { padding: 6px 2px; font-size: 12px; }
  .tools { padding: 10px 14px; }
  .tool { max-height: 44vh; overflow-y: auto; }
}

/* ======================================================================
   Layout B — landscape phone / small tablet: panel on the right, stats in the bar
   ====================================================================== */
@media (orientation: landscape) and (max-width: 1099px), (orientation: landscape) and (max-height: 559px) {
  :root { --bar-h: 52px; }
  .chip { display: none; }
  .brand-name { font-size: 22px; }
  .logo { width: 30px; height: 30px; padding: 5px; }
  .round { width: 34px; height: 34px; }

  .mhud {
    top: var(--safe-t);
    height: var(--bar-h);
    align-items: center;
    left: calc(var(--safe-l) + 130px);
    right: calc(var(--safe-r) + 160px);
    gap: 8px;
  }
  .mini { padding: 7px 2px; font-size: 12px; white-space: nowrap; }
  .options .eyebrow, .tools .eyebrow { display: none; }
  .options, .tools { gap: 6px; }
  .card { padding: 8px 12px; }
  .mstat {
    display: flex;
    align-items: baseline;
    justify-content: center;
    gap: 6px;
    padding: 2px 8px 3px;
    border-radius: 11px;
    box-shadow: 2px 2px 0 var(--ink);
  }
  .mstat b { font-size: 20px; line-height: 1.15; }
  .mstat span { font-size: 9px; }

  .panel {
    top: calc(var(--safe-t) + var(--bar-h));
    bottom: 0;
    left: auto;
    right: 0;
    width: clamp(236px, 28vw, 300px);
    justify-content: center;
    gap: 10px;
    overflow-y: auto;
    padding: 12px calc(var(--safe-r) + 14px) calc(var(--safe-b) + 12px) 12px;
    border-top: 0;
    border-left: 2px solid var(--ink);
  }
  .card { padding: 10px 14px; box-shadow: 4px 4px 0 var(--ink); }
  .puzzle h2 { font-size: 26px; }
  .puzzle .scramble { padding: 11px 14px; }
  .options { grid-template-columns: 1fr; gap: 8px; }
  #toast { top: calc(var(--safe-t) + var(--bar-h) + 8px); }
}