/* Bulls and Cows: dark theme, mobile first. */

:root {
  color-scheme: dark;
  --bg: #0f172a;
  --surface: #1e293b;
  --surface-2: #273550;
  --surface-3: #31415f;
  --sunken: #141d31;
  --line: #334155;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #fca5a5;
  --accent-hover: #fdbaba;
  --accent-ink: #3b0d0d;
  --bull: #fca5a5;
  --cow: #fcd34d;
  --ok: #86efac;
  --ok-ink: #052e16;
  --danger: #f87171;
  --warn: #fbbf24;
  --radius: 12px;
  --radius-sm: 9px;
  --shadow: 0 1px 0 rgb(255 255 255 / 0.04) inset, 0 14px 34px -18px rgb(0 0 0 / 0.75),
    0 2px 8px rgb(0 0 0 / 0.22);
  --t-fast: 150ms;
  --t: 200ms;
  --t-slow: 250ms;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Mono", "Segoe UI Mono", Menlo, Consolas, monospace;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

[hidden] {
  display: none !important;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--bg);
  background-image: radial-gradient(1100px 560px at 88% -12%, rgb(252 165 165 / 0.08), transparent 62%),
    radial-gradient(900px 520px at -12% 112%, rgb(252 211 77 / 0.05), transparent 60%);
  background-attachment: fixed;
  color: var(--text);
  font: 16px/1.45 var(--font);
  -webkit-tap-highlight-color: transparent;
}

h1,
h2,
p {
  margin: 0;
}

button {
  font: inherit;
  color: inherit;
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  margin: -1px;
  padding: 0;
  overflow: hidden;
  clip-path: inset(50%);
  white-space: nowrap;
  border: 0;
}

/* ---------- page layout (phone first) ---------- */

.app {
  max-width: 1200px;
  margin: 0 auto;
}

/* Header, history and controls fill the first screen; the history shrinks to fit. */
.stage {
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-height: 100vh;
  min-height: 100dvh;
  padding: 8px 16px;
}

.top {
  flex: none;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  grid-template-areas:
    "brand actions"
    "tabs tabs";
  align-items: center;
  gap: 8px 12px;
}

.brand {
  grid-area: brand;
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  font-size: 1.15rem;
  font-weight: 750;
  letter-spacing: -0.01em;
}

.brand-name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.brand-mark {
  flex: none;
  display: inline-grid;
  grid-template-columns: repeat(2, 10px);
  gap: 4px;
  padding: 8px;
  border-radius: 10px;
  background: var(--surface);
  box-shadow: var(--shadow);
}

.actions {
  grid-area: actions;
  display: flex;
  gap: 8px;
}

.tabs {
  grid-area: tabs;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--sunken);
}

.tab {
  min-height: 40px;
  padding: 0 10px;
  border: 0;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--muted);
  font-size: 0.92rem;
  font-weight: 650;
  cursor: pointer;
  transition: background-color var(--t) var(--ease), color var(--t) var(--ease), box-shadow var(--t) var(--ease);
}

.tab:hover {
  color: var(--text);
}

.tab[aria-selected="true"] {
  background: var(--surface-2);
  color: var(--text);
  box-shadow: inset 0 -2px 0 var(--accent), 0 4px 12px -6px rgb(0 0 0 / 0.6);
}

/* ---------- buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 40px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface);
  font-weight: 650;
  white-space: nowrap;
  cursor: pointer;
  transition: background-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease),
    opacity var(--t) var(--ease);
}

.btn:hover {
  background: var(--surface-2);
}

.btn-accent {
  border-color: transparent;
  background: var(--accent);
  color: var(--accent-ink);
}

.btn-accent:hover {
  background: var(--accent-hover);
}

.btn:active,
.btn.is-pressed {
  transform: scale(0.97);
}

.btn[aria-disabled="true"] {
  opacity: 0.4;
  cursor: default;
  transform: none;
}

.btn[aria-disabled="true"]:hover {
  background: var(--surface);
}

.btn-accent[aria-disabled="true"]:hover {
  background: var(--accent);
}

.lang {
  min-width: 44px;
  padding: 0 10px;
  font-family: var(--mono);
  letter-spacing: 0.04em;
}

/* ---------- cards ---------- */

.card {
  border: 1px solid rgb(148 163 184 / 0.12);
  border-radius: var(--radius);
  background: var(--surface);
  box-shadow: var(--shadow);
}

.card-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}

.hint {
  font-size: 0.8rem;
  line-height: 1.35;
  color: var(--muted);
}

/* ---------- history board ---------- */

.board {
  flex: 1 1 0;
  min-height: 150px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  padding: 8px 10px;
}

/* On narrow screens the legend moves to its own line instead of squeezing. */
.board-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 4px 8px;
  min-height: 22px;
}

.count-badge {
  min-width: 22px;
  padding: 0 7px;
  border-radius: 99px;
  background: var(--surface-2);
  font: 600 0.72rem/1.6 var(--mono);
  text-align: center;
}

.legend {
  display: flex;
  gap: 12px;
  margin-left: auto;
  font-size: 0.75rem;
  color: var(--muted);
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  white-space: nowrap;
}

/* Phone only: a shortcut to the settings card below the first screen.
 * Negative margins keep the 40px tap target from growing the header row. */
.jump {
  display: inline-grid;
  place-items: center;
  width: 40px;
  height: 40px;
  margin: -9px -6px -9px 0;
  border-radius: var(--radius-sm);
  color: var(--muted);
  transition: background-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}

.jump:hover {
  background: var(--surface-2);
  color: var(--text);
}

.board-empty {
  font-size: 0.88rem;
  color: var(--muted);
}

.board-list {
  position: relative;
  flex: 1 1 0;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 0;
  padding: 0;
  overflow-y: auto;
  list-style: none;
  scrollbar-width: thin;
}

.row {
  flex: none;
}

.row-visual {
  display: grid;
  grid-template-columns: 1rem auto auto minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
}

.row-index {
  font: 600 0.72rem var(--mono);
  text-align: right;
  color: var(--muted);
}

.tiles {
  display: flex;
  gap: 4px;
}

.tile {
  display: inline-grid;
  place-items: center;
  width: 30px;
  height: 30px;
  border: 1px solid var(--line);
  border-radius: 7px;
  background: var(--sunken);
  font: 700 1.05rem var(--mono);
  transition: opacity var(--t) var(--ease), color var(--t) var(--ease), box-shadow var(--t) var(--ease);
}

.board-list[data-digits="5"] .tiles {
  gap: 3px;
}

.board-list[data-digits="5"] .tile {
  width: 24px;
}

.tile[data-mark="excluded"] {
  opacity: 0.4;
  text-decoration: line-through;
  color: var(--muted);
}

.tile[data-mark="confirmed"] {
  box-shadow: inset 0 0 0 2px var(--ok);
  color: var(--ok);
}

.pegs {
  display: grid;
  grid-template-columns: repeat(var(--cols, 2), 10px);
  gap: 4px;
}

.peg {
  display: block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgb(148 163 184 / 0.22);
}

.peg-bull {
  background: var(--bull);
  box-shadow: 0 0 8px rgb(252 165 165 / 0.45);
}

.peg-cow {
  background: transparent;
  box-shadow: inset 0 0 0 2.5px var(--cow);
}

.counts {
  justify-self: end;
  display: flex;
  gap: 4px;
  font: 700 0.85rem var(--mono);
}

.counts b {
  padding: 2px 5px;
  border-radius: 6px;
  background: var(--sunken);
}

.count-bulls {
  color: var(--bull);
}

.count-cows {
  color: var(--cow);
}

.flag {
  display: inline-grid;
  place-items: center;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--danger);
  color: #1f0a0a;
  font: 800 0.72rem var(--font);
}

.row.is-flagged .row-visual {
  box-shadow: inset 0 0 0 1.5px var(--danger);
}

.row.is-win .row-visual {
  background: linear-gradient(90deg, rgb(252 165 165 / 0.22), rgb(252 165 165 / 0.06));
  box-shadow: inset 0 0 0 1px rgb(252 165 165 / 0.5);
}

.row.is-fresh .row-visual {
  animation: row-in var(--t-slow) var(--ease) both;
}

.row.is-fresh .peg-bull,
.row.is-fresh .peg-cow {
  animation: peg-pop var(--t-slow) var(--ease) both;
  animation-delay: calc(var(--i) * 60ms + 120ms);
}

/* Placeholders for guesses still to come, only where there is room. */
.row-ghost {
  display: none;
}

.row-ghost .row-visual {
  background: transparent;
  box-shadow: inset 0 0 0 1px rgb(148 163 184 / 0.1);
}

.row-ghost .row-index {
  opacity: 0.5;
}

.tile.is-blank {
  border-style: dashed;
  border-color: rgb(148 163 184 / 0.18);
  background: transparent;
}

/* ---------- play card ---------- */

/*
 * The play area only takes taps (keys, note chips, steppers), no drags, so it
 * uses touch-action: manipulation rather than none: two quick taps on the same
 * chip or + button count as two taps instead of a double-tap zoom, and a swipe
 * that starts on the keypad still scrolls the page down to the settings.
 */
.play {
  flex: none;
  padding: 10px;
  touch-action: manipulation;
}

.panel {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.panel-head {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 4px 10px;
}

.keys-hint {
  display: none;
}

/* Notes strip */

.notes {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 6px;
}

.note {
  position: relative;
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--sunken);
  font: 700 1rem var(--mono);
  cursor: pointer;
  transition: background-color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease),
    color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease);
}

.note:hover {
  border-color: var(--muted);
}

.note.is-pressed {
  transform: scale(0.95);
}

.note[data-mark="excluded"] {
  border-style: dashed;
  background: transparent;
  color: var(--muted);
  text-decoration: line-through 2px;
}

.note[data-mark="confirmed"] {
  border-color: transparent;
  background: var(--ok);
  color: var(--ok-ink);
}

.note[data-mark="excluded"]::after,
.note[data-mark="confirmed"]::after {
  position: absolute;
  top: 1px;
  right: 5px;
  font-size: 0.62rem;
  text-decoration: none;
}

.note[data-mark="excluded"]::after {
  content: "×";
}

.note[data-mark="confirmed"]::after {
  content: "✓";
}

/* Keypad: rows of five on phones, a phone-style pad on wide screens. */

.pad {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  grid-template-areas:
    "slots slots slots del ok"
    "k1 k2 k3 k4 k5"
    "k6 k7 k8 k9 k0";
  gap: 6px;
}

.slots {
  grid-area: slots;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 5px;
  min-width: 0;
}

.slots.is-shaking {
  animation: shake var(--t-slow) var(--ease);
}

.slot {
  flex: 0 1 40px;
  min-width: 0;
  height: 42px;
  display: grid;
  place-items: center;
  border: 2px dashed rgb(148 163 184 / 0.32);
  border-radius: var(--radius-sm);
  background: var(--sunken);
  font: 700 1.3rem var(--mono);
  transition: border-color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease);
}

.slot.is-filled {
  border-style: solid;
  border-color: var(--accent);
}

.slot.is-next {
  border-color: var(--muted);
}

.slots.is-solved .slot {
  border-color: transparent;
  background: var(--accent);
  color: var(--accent-ink);
}

.key {
  position: relative;
  min-height: 42px;
  padding: 0;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  font: 700 1.3rem var(--mono);
  cursor: pointer;
  transition: background-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease),
    opacity var(--t) var(--ease), color var(--t) var(--ease);
}

.key:hover {
  background: var(--surface-3);
}

.key.is-pressed {
  transform: translateY(1px) scale(0.97);
  background: var(--surface-3);
}

.key[aria-disabled="true"] {
  opacity: 0.35;
  cursor: default;
}

.key[data-mark="excluded"] {
  color: var(--muted);
  text-decoration: line-through 2px;
}

.key[data-mark="confirmed"]::after {
  content: "";
  position: absolute;
  top: 5px;
  right: 6px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--ok);
}

.key-delete {
  grid-area: del;
  font: 600 1.15rem var(--font);
}

.key-guess {
  grid-area: ok;
  font: 700 1.2rem var(--font);
}

.key-guess.is-ready {
  border-color: transparent;
  background: var(--accent);
  color: var(--accent-ink);
  box-shadow: 0 6px 18px -8px rgb(252 165 165 / 0.8);
}

/* Computer guesses */

.panel-title {
  font-size: 1rem;
  font-weight: 700;
}

.pill {
  padding: 1px 10px;
  border: 1px solid var(--line);
  border-radius: 99px;
  background: var(--sunken);
  font-size: 0.78rem;
  font-variant-numeric: tabular-nums;
  color: var(--muted);
}

.solve-guess {
  display: flex;
  justify-content: center;
  gap: 8px;
  padding: 2px 0;
}

.solve-guess .tile {
  width: 48px;
  height: 52px;
  border-color: rgb(252 165 165 / 0.35);
  border-radius: 10px;
  background: var(--surface-2);
  font-size: 1.6rem;
}

.solve-guess.is-thinking .tile {
  animation: think 900ms ease-in-out infinite;
  animation-delay: calc(var(--i) * 120ms);
}

.solve-guess.is-solved .tile {
  border-color: transparent;
  background: var(--accent);
  color: var(--accent-ink);
}

.steppers {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

.stepper {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr) 44px;
  align-items: center;
  gap: 4px 6px;
  padding: 6px 8px 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--sunken);
}

.stepper-label {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-size: 0.8rem;
  font-weight: 650;
  color: var(--muted);
}

.step {
  min-height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--surface-2);
  font: 700 1.35rem var(--font);
  cursor: pointer;
  transition: background-color var(--t-fast) var(--ease), transform var(--t-fast) var(--ease),
    opacity var(--t) var(--ease);
}

.step:hover {
  background: var(--surface-3);
}

.step.is-pressed {
  transform: scale(0.95);
}

.step[aria-disabled="true"] {
  opacity: 0.35;
  cursor: default;
  transform: none;
}

.step-value {
  font: 800 1.6rem var(--mono);
  text-align: center;
}

.stepper-bulls .step-value {
  color: var(--bull);
}

.stepper-cows .step-value {
  color: var(--cow);
}

.alert {
  padding: 8px 12px;
  border: 1px solid;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  line-height: 1.4;
  animation: fade-in var(--t) var(--ease);
}

.alert[data-kind="danger"] {
  border-color: rgb(248 113 113 / 0.45);
  background: rgb(248 113 113 / 0.12);
  color: #fecaca;
}

.alert[data-kind="warning"] {
  border-color: rgb(251 191 36 / 0.4);
  background: rgb(251 191 36 / 0.1);
  color: #fde68a;
}

.solve-actions {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: 8px;
}

.solve-actions .btn {
  min-height: 44px;
}

/* ---------- settings and statistics ---------- */

.options {
  scroll-margin-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 4px 16px 0;
  padding: 14px;
}

.setting {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 6px 12px;
}

.setting-label {
  font-size: 0.92rem;
}

.seg {
  display: inline-flex;
  gap: 2px;
  padding: 3px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--sunken);
}

.seg button {
  min-width: 44px;
  min-height: 40px;
  padding: 0 12px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  font-weight: 650;
  cursor: pointer;
  transition: background-color var(--t) var(--ease), color var(--t) var(--ease);
}

.seg button:hover {
  color: var(--text);
}

.seg button[aria-pressed="true"] {
  background: var(--accent);
  color: var(--accent-ink);
}

.switch {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 58px;
  height: 40px;
  padding: 0;
  border: 0;
  background: none;
  cursor: pointer;
}

.switch-track {
  position: relative;
  width: 52px;
  height: 30px;
  border-radius: 99px;
  background: var(--line);
  transition: background-color var(--t) var(--ease);
}

.switch-track::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--text);
  box-shadow: 0 2px 6px rgb(0 0 0 / 0.4);
  transition: transform var(--t) var(--ease);
}

.switch[aria-checked="true"] .switch-track {
  background: var(--accent);
}

.switch[aria-checked="true"] .switch-track::after {
  transform: translateX(22px);
  background: #fff;
}

.stats-title {
  margin-top: 6px;
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin: 0;
}

.stats div {
  padding: 8px 6px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: var(--sunken);
  text-align: center;
}

.stats dt {
  font-size: 0.72rem;
  color: var(--muted);
}

.stats dd {
  margin: 2px 0 0;
  font: 800 1.35rem var(--mono);
}

.foot {
  padding: 8px 16px 16px;
  text-align: center;
  font-size: 0.85rem;
}

.foot a {
  display: inline-block;
  padding: 11px 8px;
  color: var(--muted);
  text-decoration: none;
  transition: color var(--t) var(--ease);
}

.foot a:hover {
  color: var(--accent);
  text-decoration: underline;
}

/* ---------- messages and win dialog ---------- */

.toast {
  position: fixed;
  top: 12px;
  left: 50%;
  z-index: 10;
  max-width: min(420px, calc(100vw - 32px));
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  background: #0b1222;
  box-shadow: var(--shadow);
  font-size: 0.9rem;
  text-align: center;
  opacity: 0;
  transform: translate(-50%, -8px);
  pointer-events: none;
  transition: opacity var(--t) var(--ease), transform var(--t) var(--ease);
}

.toast.is-visible {
  opacity: 1;
  transform: translate(-50%, 0);
}

.win {
  width: min(380px, calc(100vw - 32px));
  padding: 0;
  border: 1px solid rgb(148 163 184 / 0.18);
  border-radius: 16px;
  background: var(--surface);
  color: var(--text);
  box-shadow: 0 30px 80px -20px rgb(0 0 0 / 0.85);
}

.win[open] {
  animation: pop var(--t-slow) var(--ease) both;
}

.win::backdrop {
  background: rgb(2 6 23 / 0.7);
  backdrop-filter: blur(3px);
}

.win-body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  padding: 24px 22px 20px;
  text-align: center;
}

.win-code {
  display: flex;
  gap: 6px;
  margin-bottom: 4px;
}

.win-code .tile {
  width: 42px;
  height: 48px;
  border-color: transparent;
  background: var(--accent);
  color: var(--accent-ink);
  font-size: 1.4rem;
  animation: flip 400ms var(--ease) both;
}

.win-code .tile:nth-child(2) {
  animation-delay: 70ms;
}

.win-code .tile:nth-child(3) {
  animation-delay: 140ms;
}

.win-code .tile:nth-child(4) {
  animation-delay: 210ms;
}

.win-code .tile:nth-child(5) {
  animation-delay: 280ms;
}

.win-title {
  font-size: 1.5rem;
}

.win-text {
  color: var(--muted);
}

.win-actions {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.5fr);
  gap: 8px;
  width: 100%;
  margin-top: 8px;
}

.win-actions .btn {
  min-height: 44px;
}

/* ---------- animations ---------- */

@keyframes row-in {
  from {
    opacity: 0;
    transform: translateY(6px) scale(0.98);
  }
}

@keyframes peg-pop {
  from {
    transform: scale(0);
  }
}

@keyframes shake {
  20%,
  60% {
    transform: translateX(-5px);
  }
  40%,
  80% {
    transform: translateX(5px);
  }
}

@keyframes think {
  50% {
    background: var(--surface-3);
    transform: translateY(-3px);
  }
}

@keyframes fade-in {
  from {
    opacity: 0;
  }
}

@keyframes pop {
  from {
    opacity: 0;
    transform: translateY(8px) scale(0.96);
  }
}

@keyframes flip {
  from {
    opacity: 0;
    transform: rotateX(90deg);
  }
}

/* ---------- narrow and wide screens ---------- */

@media (max-width: 419px) {
  .brand-mark {
    display: none;
  }
}

/* Very small phones (down to 320px): tighter gutters and history rows. */
@media (max-width: 369px) {
  .stage {
    padding: 8px 10px;
  }

  .options {
    margin: 4px 10px 0;
  }

  .brand {
    font-size: 1.05rem;
  }

  .tab {
    padding: 0 6px;
    font-size: 0.88rem;
  }

  .board {
    padding: 8px;
  }

  .row-visual {
    gap: 6px;
    padding: 3px 6px;
  }

  .tile {
    width: 27px;
  }

  .board-list[data-digits="5"] .tiles {
    gap: 2px;
  }

  .board-list[data-digits="5"] .tile {
    width: 22px;
  }

  .counts {
    font-size: 0.78rem;
  }

  .counts b {
    padding: 2px 4px;
  }
}

@media (min-width: 880px) {
  .app {
    display: grid;
    grid-template-columns: minmax(0, 1fr) 380px;
    grid-template-areas:
      "top top"
      "board play"
      "board options"
      "foot foot";
    grid-template-rows: auto auto 1fr auto;
    align-content: center;
    gap: 20px;
    min-height: 100vh;
    min-height: 100dvh;
    padding: 24px;
  }

  .stage {
    display: contents;
  }

  .jump {
    display: none;
  }

  .top {
    grid-area: top;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    grid-template-areas: "brand tabs actions";
  }

  .brand {
    font-size: 1.3rem;
  }

  .actions {
    justify-self: end;
  }

  .tabs {
    min-width: 360px;
  }

  /* Tall enough for the seven placeholder rows; longer histories scroll. */
  .board {
    grid-area: board;
    min-height: 490px;
    gap: 10px;
    padding: 16px;
  }

  .play {
    grid-area: play;
    align-self: start;
    padding: 18px;
  }

  .panel {
    gap: 12px;
  }

  .options {
    grid-area: options;
    align-self: start;
    margin: 0;
    padding: 18px;
  }

  .foot {
    grid-area: foot;
    padding: 0;
  }

  .row-ghost {
    display: block;
  }

  .row-visual {
    gap: 12px;
    padding: 6px 12px;
  }

  .tile {
    width: 38px;
    height: 40px;
    font-size: 1.2rem;
  }

  /* Narrower so five-digit rows still fit the board column. */
  .board-list[data-digits="5"] .tile {
    width: 32px;
  }

  .pad {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    grid-template-areas:
      "slots slots slots"
      "k1 k2 k3"
      "k4 k5 k6"
      "k7 k8 k9"
      "del k0 ok";
    gap: 8px;
  }

  .slots {
    padding-bottom: 4px;
  }

  .slot {
    flex-basis: 48px;
    height: 50px;
    font-size: 1.5rem;
  }

  .key {
    min-height: 48px;
  }

  .keys-hint {
    display: block;
  }
}

@media (min-width: 1200px) {
  .app {
    grid-template-columns: minmax(0, 1fr) 380px 290px;
    grid-template-areas:
      "top top top"
      "board play options"
      "foot foot foot";
    grid-template-rows: auto auto auto;
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 1ms !important;
    animation-delay: 0ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 1ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}