:root {
  --gap: clamp(8px, 2.2vw, 14px);
  --radius: clamp(6px, 1.6vw, 10px);

  /* Warm shiba-orange and cream. */
  --bg: #fff3e4;
  --ink: #5a3b24;
  --ink-soft: #7e5f43;
  --board-bg: #e6c9a4;
  --cell-bg: rgba(255, 248, 236, 0.6);
  --overlay-bg: rgba(255, 243, 228, 0.86);
  --surface: #fbe2c0;
  --accent: #a3672c;
  --accent-dark: #844913;
  --link-color: #844913;

  /* One pastel backdrop per doge tier (2 .. 2048). */
  --tier-1: #fdeccc;
  --tier-2: #ffdcae;
  --tier-3: #ffc7a8;
  --tier-4: #ffb1c4;
  --tier-5: #e5b4ff;
  --tier-6: #b4c1ff;
  --tier-7: #98dcff;
  --tier-8: #8ff0d6;
  --tier-9: #c2f288;
  --tier-10: #ffe86a;
  --tier-11: #ffc21f;
  --tier-super: #3a2a52;
}

* { box-sizing: border-box; }

/* Page-level rules (body background, font, scrolling) live in
   assets/site.css — the game only lays out inside .sf-stage, which is sized
   to exactly one screen below the site header. */
.app {
  width: 100%;
  max-width: 560px;
  height: 100%;
  max-height: 820px;
  padding: clamp(4px, 1.5vw, 12px) clamp(12px, 3vw, 24px) clamp(12px, 3vw, 24px);
  color: var(--ink);
  display: flex;
  flex-direction: column;
  gap: clamp(8px, 2.5vw, 16px);
}

.side-panel {
  display: contents;
}

.heading { order: 1; }
.above-game { order: 2; }
.board-wrap { order: 3; }

.heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 10px;
}

.title-block {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}

.title {
  margin: 0;
  line-height: 1;
  font-size: clamp(22px, 5.5vw, 30px);
  font-weight: 800;
  letter-spacing: 0.5px;
}

.title .c1 { color: #e86161; }
.title .c2 { color: #bf7e00; }
.title .c3 { color: #7a5cff; }
.title .c4 { color: #119e8f; }

:root[data-theme="dark"] .title .c1 { color: #ff6b6b; }
:root[data-theme="dark"] .title .c2 { color: #ffa800; }
:root[data-theme="dark"] .title .c3 { color: #a58cff; }
:root[data-theme="dark"] .title .c4 { color: #14b8a6; }

.title-sub {
  display: inline-block;
  padding: 3px 10px;
  font-size: clamp(10px, 2.8vw, 13px);
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: #fff;
  background: var(--accent-dark);
  border-radius: 999px;
}

.scores-container {
  display: flex;
  gap: 8px;
  /* If a long score pushes this onto its own row, keep it right-aligned. */
  margin-left: auto;
}

.score-box {
  background: var(--accent);
  color: #fff;
  border-radius: var(--radius);
  padding: 4px 12px;
  min-width: 58px;
  text-align: center;
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.score-label {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  opacity: 0.9;
  letter-spacing: 0.5px;
}

.score-value {
  font-size: clamp(14px, 3.2vw, 18px);
  font-weight: 700;
}

.above-game {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px 10px;
}

.game-intro {
  margin: 0;
  font-size: clamp(12px, 3vw, 14px);
  color: var(--ink-soft);
  line-height: 1.4;
}

.game-actions {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px;
  max-width: 100%;
  margin-left: auto;
}

.btn-new-game,
.btn-undo {
  flex-shrink: 0;
  border: none;
  background: var(--accent-dark);
  color: #fff;
  font-weight: 700;
  font-size: clamp(12px, 3vw, 14px);
  padding: 10px 16px;
  border-radius: var(--radius);
  cursor: pointer;
  touch-action: manipulation;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.btn-undo svg {
  width: 1.15em;
  height: 1.15em;
}

.btn-new-game:active,
.btn-undo:active {
  background: var(--accent);
}

.btn-undo:disabled {
  opacity: 0.4;
  cursor: default;
  pointer-events: none;
}

.btn-theme-toggle {
  flex-shrink: 0;
  border: none;
  background: var(--surface);
  color: var(--ink);
  line-height: 1;
  width: clamp(34px, 8vw, 40px);
  height: clamp(34px, 8vw, 40px);
  border-radius: var(--radius);
  cursor: pointer;
  touch-action: manipulation;
  display: flex;
  align-items: center;
  justify-content: center;
}

.btn-theme-toggle svg {
  width: 55%;
  height: 55%;
}

.btn-theme-toggle .icon-moon {
  display: none;
}

:root[data-theme="dark"] .btn-theme-toggle .icon-sun {
  display: none;
}

:root[data-theme="dark"] .btn-theme-toggle .icon-moon {
  display: block;
}

.btn-theme-toggle:active {
  background: var(--cell-bg);
}

.board-wrap {
  width: 100%;
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.board {
  position: relative;
  width: min(100%, 500px);
  aspect-ratio: 1 / 1;
  background: var(--board-bg);
  border-radius: calc(var(--radius) + 4px);
  padding: var(--gap);
  overflow: hidden;
  touch-action: none;
  user-select: none;
  -webkit-user-select: none;
  -webkit-touch-callout: none;
}

.grid-bg {
  position: absolute;
  inset: var(--gap);
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-template-rows: repeat(4, 1fr);
  gap: var(--gap);
}

.grid-bg .cell {
  background: var(--cell-bg);
  border-radius: var(--radius);
}

.tile-layer {
  position: absolute;
  inset: var(--gap);
}

.tile {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-radius: var(--radius);
  transition: top 100ms ease-in-out, left 100ms ease-in-out;
  will-change: top, left;
  background: var(--tier-1);
  box-shadow: 0 1px 3px rgba(60, 30, 0, 0.18);
}

.tile-layer.no-transition .tile {
  transition: none;
}

.tile[data-tier="1"]  { background: var(--tier-1); }
.tile[data-tier="2"]  { background: var(--tier-2); }
.tile[data-tier="3"]  { background: var(--tier-3); }
.tile[data-tier="4"]  { background: var(--tier-4); }
.tile[data-tier="5"]  { background: var(--tier-5); }
.tile[data-tier="6"]  { background: var(--tier-6); }
.tile[data-tier="7"]  { background: var(--tier-7); }
.tile[data-tier="8"]  { background: var(--tier-8); }
.tile[data-tier="9"]  { background: var(--tier-9); }
.tile[data-tier="10"] { background: var(--tier-10); }
.tile[data-tier="11"] { background: var(--tier-11); }
.tile[data-super="true"] { background: var(--tier-super); }

.doge-art {
  width: 94%;
  height: 94%;
  pointer-events: none;
}

.doge-art svg {
  width: 100%;
  height: 100%;
  display: block;
}

.doge-num {
  position: absolute;
  right: 5%;
  bottom: 4%;
  padding: 0.08em 0.42em;
  border-radius: 999px;
  background: rgba(48, 28, 12, 0.78);
  color: #fff;
  font-weight: 800;
  line-height: 1.25;
  pointer-events: none;
}

.tile.new {
  animation: pop 160ms ease-in-out;
}

.tile.merged {
  animation: pop 140ms ease-in-out;
  z-index: 2;
}

@keyframes pop {
  0%   { transform: scale(0.4); }
  60%  { transform: scale(1.08); }
  100% { transform: scale(1); }
}

/* Doge's one-liners after each merge. Lives inside the board (which clips
   overflow) so a long phrase can never push the page into a scroll. */
.speech-layer {
  position: absolute;
  inset: 0;
  z-index: 5;
  pointer-events: none;
  overflow: hidden;
}

.say {
  position: absolute;
  white-space: nowrap;
  font-family: "Comic Neue", "Comic Sans MS", "Comic Sans", "Chalkboard SE", "Marker Felt", cursive, sans-serif;
  font-weight: 700;
  font-size: var(--say-size, 22px);
  line-height: 1.1;
  -webkit-text-stroke: 0.14em #3b2416;
  paint-order: stroke fill;
  animation: say-float 900ms ease-out both;
}

@keyframes say-float {
  0%   { opacity: 0; transform: translateY(8px) scale(0.8) rotate(-4deg); }
  15%  { opacity: 1; transform: translateY(0) scale(1.05) rotate(-3deg); }
  70%  { opacity: 1; transform: translateY(-6px) scale(1) rotate(-3deg); }
  100% { opacity: 0; transform: translateY(-14px) scale(1) rotate(-3deg); }
}

@media (prefers-reduced-motion: reduce) {
  .speech-layer { display: none; }
  .tile.new,
  .tile.merged { animation: none; }
}

.overlay {
  position: absolute;
  inset: 0;
  background: var(--overlay-bg);
  border-radius: calc(var(--radius) + 4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10;
}

.overlay[hidden] { display: none; }

.overlay-box {
  text-align: center;
  padding: var(--overlay-box-padding, 16px);
  max-width: 100%;
  max-height: 100%;
  overflow: hidden;
}

.overlay-title {
  font-size: var(--overlay-title-size, clamp(22px, 6vw, 32px));
  font-weight: 800;
  margin: 0 0 var(--overlay-title-gap, 16px);
  color: var(--ink);
  line-height: 1.2;
}

.overlay-actions {
  display: flex;
  gap: var(--overlay-actions-gap, 10px);
  justify-content: center;
  flex-wrap: wrap;
}

.btn-overlay {
  border: none;
  border-radius: var(--radius);
  padding: var(--overlay-btn-padding, 10px 18px);
  font-weight: 700;
  font-size: var(--overlay-btn-size, clamp(13px, 3.4vw, 15px));
  cursor: pointer;
  touch-action: manipulation;
}

.btn-primary {
  background: var(--accent-dark);
  color: #fff;
}

.btn-secondary {
  background: var(--surface);
  color: var(--ink);
}

.doge-grid {
  list-style: none;
  margin: 0 0 12px;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.doge-grid li {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 6px 4px 5px;
  border-radius: var(--radius);
  background: var(--surface);
}

.doge-grid .legend-art {
  width: 100%;
  max-width: 64px;
  aspect-ratio: 1 / 1;
  border-radius: calc(var(--radius) - 2px);
  display: flex;
  align-items: center;
  justify-content: center;
}

.doge-grid .legend-art svg {
  width: 92%;
  height: 92%;
}

.doge-grid .legend-label {
  font-size: 12px;
  font-weight: 800;
  color: var(--ink);
}

.doge-grid li.locked .legend-art svg {
  filter: brightness(0) opacity(0.28);
}

.doge-grid li.locked .legend-art {
  background: var(--cell-bg) !important;
}

.doge-grid li.locked .legend-label {
  color: var(--ink-soft);
}

@media (max-height: 700px) {
  .app {
    gap: 4px;
    padding: 8px clamp(12px, 3vw, 24px);
  }
  .game-intro {
    display: none;
  }
  .title {
    font-size: clamp(20px, 6vw, 32px);
  }
  .score-box {
    padding: 3px 10px;
  }
  .btn-new-game,
  .btn-undo {
    padding: 6px 12px;
  }
}

@media (max-height: 300px) {
  .title-sub {
    display: none;
  }
  .app {
    padding: 6px clamp(12px, 3vw, 24px);
    gap: 2px;
  }
  .btn-new-game,
  .btn-undo {
    padding: 2px 10px;
    font-size: 11px;
  }
}

@media (max-width: 260px) {
  .btn-new-game,
  .btn-undo {
    padding: 6px 8px;
    font-size: 11px;
  }
  .btn-theme-toggle {
    width: 26px;
    height: 26px;
    font-size: 12px;
  }
  .game-actions {
    gap: 4px;
  }
}

@media (max-height: 220px) {
  .app {
    padding: 4px clamp(12px, 3vw, 24px);
    gap: 1px;
  }
  .title {
    font-size: 14px;
    letter-spacing: 0;
  }
  .score-box {
    padding: 1px 6px;
    min-width: 36px;
  }
  .score-label {
    font-size: 7px;
  }
  .score-value {
    font-size: 11px;
  }
  .btn-new-game,
  .btn-undo {
    padding: 1px 8px;
    font-size: 10px;
  }
  .btn-theme-toggle {
    width: 20px;
    height: 20px;
    font-size: 11px;
  }
}

:root[data-theme="dark"] {
  --bg: #1d1510;
  --ink: #f8e9d6;
  --ink-soft: #c9a984;
  --board-bg: #3a2a1d;
  --cell-bg: rgba(255, 224, 190, 0.08);
  --overlay-bg: rgba(29, 21, 16, 0.86);
  --surface: #4a3524;
  --accent: #a76525;
  --accent-dark: #8a4d14;
  --link-color: #f0b873;
}

/* The doge collection now lives in the article below the game. */
.doge-collection-note { margin: 0 0 12px; }

.sf-article .doge-grid {
  grid-template-columns: repeat(auto-fill, minmax(84px, 1fr));
  gap: 10px;
  margin: 0 0 14px;
}

.sf-article .doge-grid li { margin: 0; }
.sf-article .doge-grid .legend-art { max-width: 84px; }
.sf-article .doge-grid .legend-label { font-size: 14px; }