.arcade-catalog-heading {
  align-items: end;
  display: flex;
  gap: 36px;
  justify-content: space-between;
  margin: 90px 0 30px;
}

.arcade-catalog-heading h2 {
  font-size: clamp(38px, 5vw, 66px);
  letter-spacing: -.055em;
  line-height: .95;
  margin: 10px 0 0;
}

.arcade-catalog-heading p {
  color: var(--muted);
  margin: 0;
  max-width: 470px;
}

.arcade-catalog {
  display: grid;
  gap: 16px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.arcade-catalog-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 24px;
  display: flex;
  flex-direction: column;
  min-height: 390px;
  overflow: hidden;
  padding: 24px;
  position: relative;
  transition: border-color .2s ease, box-shadow .2s ease, transform .2s ease;
}

.arcade-catalog-card::before {
  background: var(--game-accent, var(--brand));
  content: "";
  height: 5px;
  inset: 0 0 auto;
  position: absolute;
}

.arcade-catalog-card:hover {
  border-color: var(--game-accent, var(--brand));
  box-shadow: var(--shadow);
  transform: translateY(-5px);
}

.arcade-catalog-card--code { --game-accent: #65e9e4; }
.arcade-catalog-card--algo { --game-accent: #8d75ff; }
.arcade-catalog-card--memory { --game-accent: #ef9e56; }
.arcade-catalog-card--cloud { --game-accent: #5f8dff; }
.arcade-catalog-card--pong { --game-accent: #c8ff5d; }
.arcade-catalog-card--defend { --game-accent: #ff6a65; }
.arcade-catalog-card--connect { --game-accent: #ffd85d; }
.arcade-catalog-card--quest { --game-accent: #63d89b; }
.arcade-catalog-card--pac { --game-accent: #c8ff5d; }

.arcade-catalog-card__icon {
  align-items: center;
  background: var(--ink);
  border-radius: 14px;
  color: var(--game-accent, var(--arcade-lime));
  display: flex;
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 19px;
  font-weight: 950;
  height: 56px;
  justify-content: center;
  letter-spacing: -.04em;
  margin-bottom: 28px;
  width: 64px;
}

.arcade-catalog-card__meta {
  color: var(--muted);
  font-size: 9px;
  font-weight: 900;
  letter-spacing: .1em;
  text-transform: uppercase;
}

.arcade-catalog-card h3 {
  font-size: 27px;
  letter-spacing: -.035em;
  line-height: 1;
  margin: 10px 0 13px;
}

.arcade-catalog-card p {
  color: var(--muted);
  flex: 1;
  font-size: 13px;
  margin: 0 0 22px;
}

.arcade-catalog-card > span[data-game-progress] {
  color: var(--muted);
  font-size: 10px;
  font-weight: 750;
  margin-bottom: 10px;
}

.arcade-catalog-card > a {
  align-items: center;
  border-top: 1px solid var(--line);
  color: var(--brand);
  display: flex;
  font-size: 12px;
  font-weight: 900;
  justify-content: space-between;
  padding-top: 16px;
  text-decoration: none;
}

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

.arcade-dashboard-section {
  background: var(--ink);
  color: var(--bg);
}

.arcade-dashboard-section .arcade-catalog-heading { margin-top: 0; }
.arcade-dashboard-section .kicker { color: var(--arcade-lime); }
.arcade-dashboard-section .arcade-catalog-heading p { color: rgba(255, 255, 255, .66); }

.arcade-stat-grid {
  display: grid;
  gap: 12px;
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.arcade-stat-grid > div {
  border: 1px solid rgba(255, 255, 255, .15);
  border-radius: 20px;
  padding: 22px;
}

.arcade-stat-grid strong {
  color: var(--arcade-lime);
  display: block;
  font-size: 36px;
  letter-spacing: -.04em;
}

.arcade-stat-grid span {
  color: rgba(255, 255, 255, .65);
  font-size: 11px;
  font-weight: 800;
}

.achievement-list {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  margin-top: 22px;
}

.achievement-chip {
  align-items: center;
  border: 1px solid rgba(255, 255, 255, .1);
  border-radius: 16px;
  display: flex;
  gap: 10px;
  opacity: .48;
  padding: 13px;
}

.achievement-chip.is-unlocked {
  background: rgba(200, 255, 93, .08);
  border-color: rgba(200, 255, 93, .42);
  opacity: 1;
}

.achievement-chip > span {
  color: var(--arcade-lime);
  font-size: 21px;
}

.achievement-chip strong,
.achievement-chip small { display: block; }
.achievement-chip strong { color: #fff; font-size: 11px; }
.achievement-chip small { color: rgba(255, 255, 255, .55); font-size: 9px; line-height: 1.3; }

.arcade-dashboard-lower {
  display: grid;
  gap: 14px;
  grid-template-columns: 1fr 1fr;
  margin-top: 24px;
}

.daily-challenge,
.local-leaderboard {
  border: 1px solid rgba(255, 255, 255, .15);
  border-radius: 22px;
  padding: 24px;
}

.daily-challenge h3,
.local-leaderboard h3 {
  color: #fff;
  font-size: 28px;
  letter-spacing: -.04em;
  margin: 8px 0;
}

.daily-challenge p {
  color: rgba(255, 255, 255, .62);
  margin: 0 0 18px;
}

.local-leaderboard ol {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
}

.local-leaderboard li {
  align-items: center;
  border-top: 1px solid rgba(255, 255, 255, .1);
  display: grid;
  gap: 10px;
  grid-template-columns: 24px 1fr auto;
  padding: 8px 0;
}

.local-leaderboard li span { color: var(--arcade-lime); font-size: 10px; font-weight: 900; }
.local-leaderboard li strong { color: #fff; font-size: 12px; }
.local-leaderboard li b { color: var(--arcade-lime); font-size: 13px; }
.local-leaderboard li.is-empty { color: rgba(255, 255, 255, .56); display: block; font-size: 11px; }

.arcade-achievement-toast {
  background: #102a25;
  border: 1px solid #c8ff5d;
  border-radius: 16px;
  bottom: 24px;
  box-shadow: 0 18px 60px rgba(0, 0, 0, .3);
  color: #fff;
  opacity: 0;
  padding: 14px 18px;
  position: fixed;
  right: 24px;
  transform: translateY(16px);
  transition: opacity .25s ease, transform .25s ease;
  z-index: 500;
}

.arcade-achievement-toast.is-visible { opacity: 1; transform: translateY(0); }
.arcade-achievement-toast span { color: #c8ff5d; display: block; font-size: 9px; font-weight: 900; letter-spacing: .1em; text-transform: uppercase; }
.arcade-achievement-toast strong { display: block; font-size: 16px; }

/* Shared expansion game shell */
.game-page--expansion {
  background:
    radial-gradient(circle at 90% 12%, color-mix(in srgb, var(--game-accent, var(--brand)) 15%, transparent), transparent 30rem),
    var(--bg);
}

.game-page--code { --game-accent: #32c8c4; }
.game-page--algorithm { --game-accent: #8d75ff; }
.game-page--memory { --game-accent: #ef9e56; }
.game-page--cloud { --game-accent: #5f8dff; }
.game-page--pong { --game-accent: #8cbf25; }
.game-page--defend { --game-accent: #e85e59; }
.game-page--connect { --game-accent: #dba400; }
.game-page--quest { --game-accent: #2aaa72; }
.game-page--pac { --game-accent: #9bcf32; }

.game-page--expansion .kicker,
.game-page--expansion .breadcrumb a { color: var(--game-accent); }

.expansion-game {
  display: grid;
  gap: 24px;
  grid-template-columns: minmax(0, 1fr) 300px;
}

.expansion-game--wide { grid-template-columns: minmax(0, 1fr) 260px; }

.game-surface,
.game-side-panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 26px;
  box-shadow: var(--shadow);
}

.game-surface { min-width: 0; overflow: hidden; padding: 24px; }
.game-surface--dark { background: #071713; border-color: #1f3d35; color: #fff; }
.game-side-panel { padding: 22px; }

.game-toolbar {
  align-items: center;
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  justify-content: space-between;
  margin-bottom: 18px;
}

.game-toolbar__group { align-items: center; display: flex; flex-wrap: wrap; gap: 8px; }

.game-control,
.game-toolbar button,
.game-toolbar select {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 10px;
  color: var(--ink);
  cursor: pointer;
  font: inherit;
  font-size: 11px;
  font-weight: 800;
  min-height: 38px;
  padding: 8px 12px;
}

.game-toolbar button:hover,
.game-toolbar button:focus-visible,
.game-control:hover,
.game-control:focus-visible { border-color: var(--game-accent); color: var(--game-accent); }
.game-toolbar button:disabled,
.game-control:disabled { cursor: default; opacity: .45; }
.game-control--primary { background: var(--game-accent); border-color: var(--game-accent); color: #07120f; }

.game-metrics {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(2, 1fr);
  margin: 18px 0;
}

.game-metric {
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px;
}

.game-metric span { color: var(--muted); display: block; font-size: 9px; font-weight: 900; letter-spacing: .06em; text-transform: uppercase; }
.game-metric strong { display: block; font-size: 23px; letter-spacing: -.03em; }

.game-instructions {
  border-top: 1px solid var(--line);
  color: var(--muted);
  font-size: 11px;
  margin-top: 18px;
  padding-top: 16px;
}

.game-instructions h3 { color: var(--ink); font-size: 13px; margin: 0 0 6px; }
.game-instructions p,
.game-instructions ul { margin: 0; }
.game-instructions ul { padding-left: 18px; }

.game-status-box {
  background: var(--surface-2);
  border-radius: 15px;
  color: var(--muted);
  font-size: 12px;
  margin: 12px 0;
  min-height: 70px;
  padding: 14px;
}

.game-status-box strong { color: var(--ink); display: block; font-size: 16px; }

.canvas-shell {
  background: #071713;
  border: 8px solid #102a25;
  border-radius: 20px;
  overflow: hidden;
  position: relative;
}

.canvas-shell canvas {
  aspect-ratio: 16 / 9;
  display: block;
  height: auto;
  max-height: 72vh;
  outline: none;
  touch-action: none;
  width: 100%;
}

.canvas-shell canvas:focus-visible { box-shadow: inset 0 0 0 4px var(--game-accent); }

.game-overlay {
  align-items: center;
  background: rgba(7, 18, 15, .76);
  color: #fff;
  display: flex;
  flex-direction: column;
  inset: 0;
  justify-content: center;
  padding: 24px;
  position: absolute;
  text-align: center;
}

.game-overlay[hidden] { display: none; }
.game-overlay h2 { font-size: clamp(30px, 5vw, 52px); letter-spacing: -.05em; line-height: 1; margin: 8px 0; }
.game-overlay p { margin: 0 0 18px; max-width: 430px; opacity: .78; }

.touch-controls {
  display: none;
  gap: 8px;
  grid-template-columns: repeat(3, 1fr);
  margin-top: 12px;
}

.touch-controls button {
  background: var(--ink);
  border: 0;
  border-radius: 13px;
  color: var(--bg);
  font: inherit;
  font-size: 20px;
  min-height: 52px;
  touch-action: manipulation;
}

/* Pac-Grid */
.pac-game-surface {
  background:
    radial-gradient(circle at 50% 40%, rgba(45, 143, 120, .14), transparent 42%),
    #071713;
}

.pac-hud {
  align-items: center;
  color: #9eb8af;
  display: flex;
  font: 800 10px ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  justify-content: space-between;
  letter-spacing: .1em;
  margin: 0 auto 12px;
  max-width: 760px;
}

.pac-hud strong,
.pac-hud__status { color: #c8ff5d; }

.pac-canvas-shell {
  background: #050c0a;
  border-color: #123b34;
  margin: 0 auto;
  max-width: 760px;
}

.pac-canvas-shell canvas {
  aspect-ratio: 19 / 21;
  height: auto;
  margin: 0 auto;
  max-height: 78vh;
  max-width: 100%;
  width: auto;
}

.pac-power-meter {
  background: var(--surface-2);
  border-radius: 999px;
  height: 38px;
  margin: 16px 0;
  overflow: hidden;
  position: relative;
}

.pac-power-meter > span {
  background: linear-gradient(90deg, #8d75ff, #c8ff5d);
  inset: 0;
  position: absolute;
  transform: scaleX(0);
  transform-origin: left;
  transition: transform .1s linear;
}

.pac-power-meter > strong {
  align-items: center;
  color: var(--ink);
  display: flex;
  font-size: 10px;
  inset: 0;
  justify-content: center;
  letter-spacing: .04em;
  position: absolute;
}

.pac-touch-controls {
  display: none;
  gap: 8px;
  grid-template-columns: repeat(3, 1fr);
  margin: 12px auto 0;
  max-width: 420px;
}

.pac-touch-controls button {
  background: var(--ink);
  border: 1px solid rgba(255, 255, 255, .12);
  border-radius: 13px;
  color: var(--bg);
  font-family: inherit;
  font-size: 20px;
  font-weight: 850;
  min-height: 52px;
  touch-action: manipulation;
}

.pac-touch-controls button:active { background: var(--game-accent); color: #07120f; }

/* Code Sprint */
.code-terminal {
  background: #071713;
  border: 1px solid #22443b;
  border-radius: 18px;
  color: #eaf7f1;
  min-height: 430px;
  padding: 22px;
}

.code-terminal__bar {
  align-items: center;
  border-bottom: 1px solid #22443b;
  color: #7fa79b;
  display: flex;
  font: 11px ui-monospace, SFMono-Regular, Menlo, monospace;
  justify-content: space-between;
  margin: -4px 0 34px;
  padding-bottom: 14px;
}

.code-terminal__prompt {
  color: #c8ff5d;
  font: clamp(20px, 3vw, 32px) / 1.45 ui-monospace, SFMono-Regular, Menlo, monospace;
  margin: 0 0 26px;
  min-height: 95px;
}

.code-terminal__prompt .is-complete { color: #65e9e4; }
.code-terminal__prompt .is-current { background: rgba(200, 255, 93, .16); border-bottom: 2px solid #c8ff5d; }
.code-terminal__prompt .is-error { background: rgba(255, 106, 101, .25); color: #ff9b97; }

.code-terminal input {
  background: #0e2922;
  border: 1px solid #2c5449;
  border-radius: 12px;
  caret-color: #c8ff5d;
  color: #fff;
  font: 18px ui-monospace, SFMono-Regular, Menlo, monospace;
  outline: none;
  padding: 15px;
  width: 100%;
}

.code-terminal input:focus { border-color: #c8ff5d; box-shadow: 0 0 0 3px rgba(200, 255, 93, .12); }
.code-terminal__feedback { color: #7fa79b; font: 11px ui-monospace, SFMono-Regular, Menlo, monospace; margin-top: 14px; }

/* Algorithm Arena */
.algorithm-grid {
  aspect-ratio: 16 / 10;
  display: grid;
  grid-template-columns: repeat(18, 1fr);
  touch-action: none;
}

.algorithm-cell {
  background: var(--surface);
  border: 1px solid color-mix(in srgb, var(--line) 66%, transparent);
  min-width: 0;
}

.algorithm-cell:hover { background: var(--surface-2); }
.algorithm-cell.is-wall { background: #102a25; }
.algorithm-cell.is-weighted:not(.is-wall, .is-start, .is-end) {
  background-image: radial-gradient(circle, rgba(141, 117, 255, .28) 0 20%, transparent 23%);
}
.algorithm-cell.is-start { background: #2aaa72; }
.algorithm-cell.is-end { background: #ff6a65; }
.algorithm-cell.is-visited { animation: cell-visit .24s ease both; background: color-mix(in srgb, var(--game-accent) 28%, var(--surface)); }
.algorithm-cell.is-path { animation: cell-path .28s ease both; background: #ffd85d; }

.algorithm-legend { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 14px; }
.algorithm-legend span { align-items: center; color: var(--muted); display: inline-flex; font-size: 10px; gap: 6px; }
.algorithm-legend i { border-radius: 3px; display: inline-block; height: 12px; width: 12px; }

/* Memory Stack */
.memory-board {
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(4, 1fr);
}

.memory-card {
  aspect-ratio: 1.15;
  background: transparent;
  border: 0;
  cursor: pointer;
  padding: 0;
  perspective: 700px;
}

.memory-card__inner {
  height: 100%;
  position: relative;
  transform-style: preserve-3d;
  transition: transform .36s ease;
  width: 100%;
}

.memory-card.is-flipped .memory-card__inner,
.memory-card.is-matched .memory-card__inner { transform: rotateY(180deg); }

.memory-card__face {
  align-items: center;
  backface-visibility: hidden;
  border: 1px solid var(--line);
  border-radius: 15px;
  display: flex;
  flex-direction: column;
  inset: 0;
  justify-content: center;
  padding: 9px;
  position: absolute;
  text-align: center;
}

.memory-card__front { background: #102a25; color: #c8ff5d; font-size: 25px; font-weight: 950; }
.memory-card__back { background: var(--surface); color: var(--ink); transform: rotateY(180deg); }
.memory-card__back strong { font-size: clamp(10px, 1.25vw, 14px); line-height: 1.15; }
.memory-card__back small { color: var(--muted); font-size: 8px; margin-top: 5px; }
.memory-card.is-matched .memory-card__back { border-color: var(--game-accent); box-shadow: inset 0 0 0 2px var(--game-accent); }

/* Cloud 2048 */
.cloud-board {
  background: #102a25;
  border-radius: 18px;
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(4, 1fr);
  margin: auto;
  max-width: 620px;
  padding: 12px;
  touch-action: none;
}

.cloud-tile {
  align-items: center;
  aspect-ratio: 1;
  background: #26463e;
  border-radius: 13px;
  color: #10201c;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 5px;
  text-align: center;
}

.cloud-tile strong { font-size: clamp(20px, 4vw, 40px); line-height: 1; }
.cloud-tile small { font-size: clamp(7px, 1vw, 10px); font-weight: 850; margin-top: 5px; }
.cloud-tile[data-value="0"] { color: transparent; }
.cloud-tile[data-value="2"] { background: #dff7ee; }
.cloud-tile[data-value="4"] { background: #bfeee0; }
.cloud-tile[data-value="8"] { background: #8edfc9; }
.cloud-tile[data-value="16"] { background: #65e9e4; }
.cloud-tile[data-value="32"] { background: #c8ff5d; }
.cloud-tile[data-value="64"] { background: #ffd85d; }
.cloud-tile[data-value="128"] { background: #ef9e56; }
.cloud-tile[data-value="256"] { background: #ff7c72; }
.cloud-tile[data-value="512"] { background: #aa8fff; }
.cloud-tile[data-value="1024"] { background: #6e91ff; color: #fff; }
.cloud-tile[data-value="2048"] { background: #fff; box-shadow: 0 0 30px #c8ff5d; }

/* Defend the API */
.defend-resource-bar {
  display: grid;
  gap: 8px;
  grid-template-columns: repeat(3, 1fr);
  margin-bottom: 14px;
}

.defend-resource-bar div {
  background: var(--surface-2);
  border-radius: 12px;
  padding: 10px;
  text-align: center;
}

.defend-resource-bar span { color: var(--muted); display: block; font-size: 8px; font-weight: 900; text-transform: uppercase; }
.defend-resource-bar strong { display: block; font-size: 19px; }

.defense-buttons { display: grid; gap: 8px; }
.defense-buttons button { text-align: left; width: 100%; }
.defense-buttons button strong,
.defense-buttons button small { display: block; }
.defense-buttons button small { color: var(--muted); font-size: 9px; }
.defense-buttons button.is-selected { border-color: var(--game-accent); box-shadow: inset 4px 0 0 var(--game-accent); }

/* Connect Four */
.connect-board {
  background: #164f9b;
  border: 8px solid #0c3978;
  border-radius: 20px;
  display: grid;
  gap: 7px;
  grid-template-columns: repeat(7, 1fr);
  margin: auto;
  max-width: 690px;
  padding: 14px;
}

.connect-slot {
  aspect-ratio: 1;
  background: var(--surface);
  border: 0;
  border-radius: 50%;
  box-shadow: inset 0 4px 8px rgba(7, 18, 15, .28);
  cursor: pointer;
  padding: 0;
}

.connect-slot:hover { box-shadow: inset 0 0 0 5px rgba(255, 216, 93, .45); }
.connect-slot[data-player="1"] { background: #ff6a65; }
.connect-slot[data-player="2"] { background: #ffd85d; }
.connect-slot.is-winning { animation: winning-disc .65s ease infinite alternate; }

/* Canvas game-specific framing */
.pong-scoreline,
.quest-progress {
  align-items: center;
  color: #fff;
  display: flex;
  font-size: 12px;
  font-weight: 850;
  justify-content: space-between;
  left: 16px;
  pointer-events: none;
  position: absolute;
  right: 16px;
  top: 12px;
  z-index: 2;
}

.pong-scoreline strong { font-size: 28px; }

@keyframes cell-visit {
  from { opacity: .2; transform: scale(.35); }
}

@keyframes cell-path {
  50% { transform: scale(1.25); }
}

@keyframes winning-disc {
  to { box-shadow: 0 0 0 5px #fff, 0 0 28px #fff; transform: scale(.88); }
}

@media (max-width: 1080px) {
  .arcade-catalog { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .achievement-list { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

@media (max-width: 900px) {
  .expansion-game,
  .expansion-game--wide { grid-template-columns: 1fr; }
  .arcade-stat-grid { grid-template-columns: repeat(2, 1fr); }
  .game-side-panel { order: -1; }
  .game-side-panel .game-instructions { display: none; }
}

@media (max-width: 650px) {
  .arcade-catalog-heading { align-items: flex-start; flex-direction: column; gap: 14px; margin-top: 62px; }
  .arcade-catalog { grid-template-columns: 1fr; }
  .arcade-catalog-card { min-height: 330px; }
  .achievement-list { grid-template-columns: 1fr; }
  .arcade-dashboard-lower { grid-template-columns: 1fr; }
  .game-surface { padding: 12px; }
  .memory-board { gap: 6px; }
  .memory-card__face { border-radius: 9px; padding: 5px; }
  .cloud-board { gap: 6px; padding: 7px; }
  .cloud-tile { border-radius: 8px; }
  .connect-board { border-width: 5px; gap: 4px; padding: 7px; }
  .touch-controls { display: grid; }
  .pac-touch-controls { display: grid; }
  .pac-canvas-shell canvas { max-height: none; width: 100%; }
  .arcade-achievement-toast { bottom: 12px; left: 12px; right: 12px; }
}

@media (prefers-reduced-motion: reduce) {
  .arcade-catalog-card,
  .memory-card__inner,
  .arcade-achievement-toast { transition: none; }
  .algorithm-cell.is-visited,
  .algorithm-cell.is-path,
  .connect-slot.is-winning { animation: none; }
}