@font-face {
  font-family: 'Crate Stencil';
  src: url('../fonts/big-shoulders-stencil-display-latin-800-normal.woff2') format('woff2');
  font-weight: 800;
  font-display: swap;
}

@font-face {
  font-family: 'Plex Mono';
  src: url('../fonts/ibm-plex-mono-latin-400-normal.woff2') format('woff2');
  font-weight: 400;
  font-display: swap;
}

@font-face {
  font-family: 'Plex Mono';
  src: url('../fonts/ibm-plex-mono-latin-600-normal.woff2') format('woff2');
  font-weight: 600;
  font-display: swap;
}

:root {
  --ink: #09090b;
  --panel: #111114;
  --panel-2: #18181c;
  --line: #2a2a31;
  --text: #ececef;
  --muted: #a1a1aa; /* 7.6:1 on --ink */
  --accent: #facc15;
  --accent-dim: rgba(250, 204, 21, 0.14);
  --danger: #f87171;
  --stencil: 'Crate Stencil', 'Arial Narrow', Impact, sans-serif;
  --mono: 'Plex Mono', ui-monospace, 'SFMono-Regular', Menlo, Consolas, monospace;
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
  margin: 0;
}

body {
  overflow: hidden;
  background:
    radial-gradient(120% 80% at 50% 0%, rgba(250, 204, 21, 0.05), transparent 60%),
    radial-gradient(circle at 1px 1px, rgba(255, 255, 255, 0.045) 1px, transparent 0) 0 0 / 24px 24px,
    var(--ink);
  color: var(--text);
  font: 400 14px/1.45 var(--mono);
  -webkit-font-smoothing: antialiased;
  -webkit-tap-highlight-color: transparent;
  overscroll-behavior: none;
}

button {
  font: inherit;
  color: inherit;
}

.app {
  display: flex;
  flex-direction: column;
  height: 100vh;
  height: 100dvh;
  padding: max(8px, env(safe-area-inset-top)) max(16px, env(safe-area-inset-right)) max(8px, env(safe-area-inset-bottom)) max(16px, env(safe-area-inset-left));
}

/* ---------- HUD ---------- */

.hud {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto auto;
  grid-template-areas:
    'id counters actions'
    'brief brief brief';
  align-items: center;
  gap: 4px 20px;
  min-height: 52px;
}

.hud-id {
  grid-area: id;
  min-width: 0;
}

.eyebrow {
  margin: 0;
  color: var(--muted);
  font-size: 11px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.level-title {
  margin: 0;
  font: 800 30px/1 var(--stencil);
  letter-spacing: 0.02em;
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.level-code {
  color: var(--accent);
}

.counters {
  grid-area: counters;
  display: flex;
  gap: 6px;
  margin: 0;
}

.counter {
  min-width: 70px;
  padding: 5px 10px 6px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: rgba(17, 17, 20, 0.8);
}

.counter dt {
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.counter dd {
  margin: 0;
  font-weight: 600;
  font-size: 20px;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
}

.counter--par {
  border-color: rgba(250, 204, 21, 0.45);
}

.counter--par dd {
  color: var(--accent);
}

.counter--over dd {
  color: var(--text);
}

.hud-actions {
  grid-area: actions;
  display: flex;
  gap: 6px;
}

.icon-btn {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  cursor: pointer;
  transition: background-color 120ms ease, border-color 120ms ease, color 120ms ease;
}

.icon-btn svg {
  width: 20px;
  height: 20px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon-btn:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.icon-btn:focus-visible,
.btn:focus-visible,
.chip:focus-visible,
.close-btn:focus-visible,
.level-tile:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

#btn-sound .slash {
  display: none;
}

#btn-sound[aria-pressed='false'] .slash {
  display: inline;
}

#btn-sound[aria-pressed='false'] .wave {
  display: none;
}

.brief {
  grid-area: brief;
  margin: 0;
  color: var(--muted);
  font-size: 12.5px;
  min-height: 1.45em;
}

.brief b {
  color: var(--accent);
  font-weight: 600;
}

/* ---------- Stage ---------- */

.stage {
  position: relative;
  flex: 1;
  min-height: 0;
}

#board {
  position: absolute;
  inset: 8px 0 0 0;
  display: block;
  width: 100%;
  height: calc(100% - 8px);
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  cursor: pointer;
}

.replay-bar {
  position: absolute;
  left: 50%;
  bottom: 8px;
  translate: -50% 0;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 6px 6px 14px;
  border: 1px solid rgba(250, 204, 21, 0.45);
  border-radius: 999px;
  background: rgba(17, 17, 20, 0.92);
  font-variant-numeric: tabular-nums;
  white-space: nowrap;
}

.replay-bar[hidden] {
  display: none;
}

.replay-tag {
  color: var(--accent);
  font: 800 18px/1 var(--stencil);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.chip {
  min-height: 36px;
  padding: 0 14px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--panel-2);
  cursor: pointer;
}

.chip--solid {
  border-color: var(--accent);
  background: var(--accent);
  color: var(--ink);
  font-weight: 600;
}

.keys {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 6px 18px;
  padding-top: 6px;
  color: var(--muted);
  font-size: 12px;
}

kbd {
  display: inline-block;
  min-width: 20px;
  margin-right: 2px;
  padding: 0 5px;
  border: 1px solid var(--line);
  border-bottom-width: 2px;
  border-radius: 5px;
  background: var(--panel);
  color: var(--text);
  font: 600 11px/18px var(--mono);
  text-align: center;
}

.toast {
  position: fixed;
  left: 50%;
  bottom: 64px;
  z-index: 10;
  max-width: min(92vw, 460px);
  margin: 0;
  padding: 10px 16px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(17, 17, 20, 0.95);
  color: var(--text);
  font-size: 13px;
  text-align: center;
  translate: -50% 12px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 160ms ease, translate 160ms ease;
}

.toast.show {
  opacity: 1;
  translate: -50% 0;
}

/* ---------- Panels ---------- */

dialog.panel {
  width: min(94vw, 560px);
  max-height: min(88dvh, 860px);
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 16px;
  background: linear-gradient(180deg, #141418, #0e0e11);
  color: var(--text);
  box-shadow: 0 30px 80px rgba(0, 0, 0, 0.6), inset 0 1px 0 rgba(255, 255, 255, 0.04);
  overflow: auto;
  overscroll-behavior: contain;
}

dialog.panel--levels {
  width: min(94vw, 760px);
}

dialog.panel::backdrop {
  background: rgba(9, 9, 11, 0.72);
  backdrop-filter: blur(4px);
}

dialog[open] {
  animation: panel-in 180ms ease-out;
}

@keyframes panel-in {
  from {
    opacity: 0;
    translate: 0 10px;
  }
}

.panel-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 12px;
}

.panel h2 {
  margin: 0;
  font: 800 30px/1.05 var(--stencil);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.panel h3 {
  margin: 20px 0 8px;
  color: var(--muted);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.brand {
  display: inline-block;
  margin: 0 0 6px;
  padding: 2px 8px;
  background: var(--accent);
  color: var(--ink);
  font: 800 15px/1.3 var(--stencil);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.panel-sub {
  margin: 6px 0 0;
  color: var(--muted);
}

.close-btn {
  display: grid;
  place-items: center;
  flex: none;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  cursor: pointer;
}

.close-btn svg {
  width: 18px;
  height: 18px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
}

.btn {
  min-height: 46px;
  padding: 0 18px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel-2);
  font-weight: 600;
  cursor: pointer;
}

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

.btn--primary:hover {
  background: #fde047;
}

.btn--ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn.danger {
  margin-top: 18px;
  color: var(--danger);
}

.continue-btn {
  width: 100%;
  margin: 16px 0 4px;
  text-align: left;
}

.continue-btn small {
  float: right;
  font-weight: 400;
  opacity: 0.8;
}

.worlds {
  display: grid;
  gap: 18px;
  margin-top: 14px;
}

.world h3 {
  display: flex;
  justify-content: space-between;
  margin: 0 0 8px;
}

.world h3 span:first-child {
  color: var(--text);
}

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

.level-tile {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
  min-height: 64px;
  padding: 8px 9px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: var(--panel);
  text-align: left;
  cursor: pointer;
  transition: border-color 120ms ease, background-color 120ms ease;
}

.level-tile:hover {
  border-color: var(--accent);
}

.level-tile .code {
  font: 800 20px/1 var(--stencil);
  letter-spacing: 0.04em;
}

.level-tile .name {
  max-width: 100%;
  color: var(--muted);
  font-size: 11px;
  line-height: 1.25;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.level-tile .pips {
  display: flex;
  gap: 5px;
  margin-top: auto;
  padding: 4px 0 1px 2px;
}

.pip {
  width: 9px;
  height: 9px;
  border: 1.5px solid #52525b;
  rotate: 45deg;
}

.pip.on {
  border-color: var(--accent);
  background: var(--accent);
}

.level-tile.is-current {
  border-color: rgba(250, 204, 21, 0.6);
  background: var(--accent-dim);
}

.level-tile.is-solved .code {
  color: var(--accent);
}

.footnote {
  margin: 18px 0 0;
  color: var(--muted);
  font-size: 12px;
}

.toggle {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 12px 0;
  border-bottom: 1px solid var(--line);
  cursor: pointer;
}

.toggle input {
  flex: none;
  width: 20px;
  height: 20px;
  margin: 1px 0 0;
  accent-color: var(--accent);
}

.toggle small {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.help {
  margin: 0;
  padding: 0;
  list-style: none;
  color: var(--muted);
  font-size: 13px;
}

.help li {
  padding: 3px 0;
}

.help b {
  display: inline-block;
  min-width: 118px;
  color: var(--text);
  font-weight: 600;
}

/* Level complete */

dialog.panel--done {
  width: min(92vw, 420px);
  text-align: center;
}

.stamp {
  display: inline-block;
  margin: 6px 0 10px;
  padding: 4px 18px 2px;
  border: 4px solid var(--accent);
  border-radius: 6px;
  color: var(--accent);
  font: 800 56px/1 var(--stencil);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  rotate: -4deg;
}

dialog[open] .stamp {
  animation: stamp 420ms cubic-bezier(0.2, 1.6, 0.4, 1) both;
}

@keyframes stamp {
  from {
    opacity: 0;
    scale: 1.8;
  }
  60% {
    opacity: 1;
  }
}

.done-level {
  margin: 0;
  color: var(--muted);
}

.stars {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin: 14px 0 6px;
}

.star {
  width: 30px;
  height: 30px;
  border: 3px solid #52525b;
  rotate: 45deg;
}

.star.on {
  border-color: var(--accent);
  background: var(--accent);
  box-shadow: 0 0 22px rgba(250, 204, 21, 0.45);
}

dialog[open] .star.on {
  animation: star-in 360ms ease-out both;
}

dialog[open] .star.on:nth-child(2) {
  animation-delay: 180ms;
}

@keyframes star-in {
  from {
    scale: 0.2;
    opacity: 0;
  }
}

.done-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  margin: 14px 0 6px;
}

.done-stats div {
  padding: 8px;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.done-stats dt {
  color: var(--muted);
  font-size: 10px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.done-stats dd {
  margin: 0;
  font-size: 22px;
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.done-note {
  min-height: 1.45em;
  margin: 8px 0 14px;
  color: var(--text);
}

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

/* ---------- Touch layout ---------- */

.gk-has-touch .desk-only {
  display: none !important;
}

/* Portrait phones: leave room for the d-pad and buttons under the board. */
.gk-has-touch .stage {
  margin-bottom: 196px;
}

.gk-has-touch .toast {
  bottom: 214px;
}

@media (max-width: 720px) {
  .hud {
    grid-template-columns: minmax(0, 1fr) auto;
    grid-template-areas:
      'id actions'
      'counters counters'
      'brief brief';
    gap: 6px 10px;
  }

  .hud-actions .icon-btn {
    width: 42px;
    height: 42px;
  }

  .level-title {
    font-size: 24px;
  }

  .counters {
    width: 100%;
  }

  .counter {
    flex: 1;
    min-width: 0;
    padding: 4px 10px 5px;
  }

  .counter dd {
    font-size: 18px;
  }

  .brief {
    font-size: 12px;
  }

  .level-tile .name {
    display: none;
  }

  .level-tile {
    min-height: 54px;
  }

  .stamp {
    font-size: 46px;
  }
}

/* Landscape phones: d-pad left, buttons right, board between them. */
@media (orientation: landscape) and (max-height: 560px) {
  .hud {
    grid-template-columns: minmax(0, 1fr) auto auto;
    grid-template-areas: 'id counters actions';
    min-height: 44px;
  }

  .brief {
    display: none;
  }

  .level-title {
    font-size: 22px;
  }

  .counter {
    min-width: 58px;
    padding: 2px 8px 3px;
  }

  .counter dd {
    font-size: 16px;
  }

  .gk-has-touch .stage {
    margin: 0 170px 0 196px;
  }

  .gk-has-touch .toast {
    bottom: 16px;
  }

  .keys {
    display: none;
  }
}

/* ---------- Phones: readable text, 44px buttons, more room for the board ---------- */

@media (pointer: coarse), (max-width: 720px) {
  .eyebrow,
  .counter dt,
  .panel h3,
  .level-tile .name,
  .done-stats dt,
  .continue-btn small {
    font-size: 12px;
  }

  .hud-actions .icon-btn {
    width: 44px;
    height: 44px;
  }

  .hud-id {
    min-width: 0;
  }

  .hud-id .eyebrow {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
  }
}

/* Narrow phones: level codes like 1-10 stay on one line in a five-column grid. */
@media (max-width: 400px) {
  dialog.panel {
    width: calc(100vw - 16px);
    padding: 16px 14px;
  }

  .level-grid {
    gap: 5px;
  }

  .level-tile {
    padding: 7px 5px;
  }

  .level-tile .code {
    font-size: 18px;
    letter-spacing: 0;
    white-space: nowrap;
  }
}

/* Landscape phones: a 48px d-pad on the left and the buttons stacked on the
   right leave a wider board between them. */
@media (orientation: landscape) and (max-height: 560px) {
  body .gk-touch {
    padding-left: max(10px, env(safe-area-inset-left));
    padding-right: max(10px, env(safe-area-inset-right));
    padding-bottom: max(10px, env(safe-area-inset-bottom));
  }

  body .gk-touch .gk-dpad {
    grid-template-columns: repeat(3, 48px);
    grid-template-rows: repeat(3, 48px);
  }

  body .gk-touch .gk-buttons {
    flex-direction: column-reverse;
    flex-wrap: nowrap;
    align-items: center;
    max-width: none;
  }

  body .gk-touch .gk-btn {
    width: 64px;
    height: 64px;
  }

  body .gk-touch .gk-btn--small {
    width: auto;
    height: 44px;
  }

  .gk-has-touch .stage {
    margin: 0 max(80px, calc(env(safe-area-inset-right) + 74px)) 0 max(150px, calc(env(safe-area-inset-left) + 144px));
  }
}

/* Landscape phones: the cleared card fits the height without scrolling. */
@media (orientation: landscape) and (max-height: 440px) {
  dialog.panel--done {
    width: min(92vw, 520px);
    padding: 14px 18px;
  }

  .stamp {
    margin: 0 0 4px;
    font-size: 34px;
    border-width: 3px;
  }

  .stars {
    margin: 6px 0 2px;
  }

  .star {
    width: 22px;
    height: 22px;
  }

  .done-stats {
    margin: 8px 0 4px;
  }

  .done-stats div {
    padding: 4px 8px;
  }

  .done-stats dd {
    font-size: 18px;
  }

  .done-note {
    margin: 4px 0 8px;
  }

  .done-actions {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;
    transition: none !important;
  }
}