:root {
  --bg: #030303;
  --surface: #0b0b0b;
  --surface-2: #111111;
  --grid-line: #232323;
  --tile-line: #353535;
  --text: #d6d6d6;
  --muted: #777777;
  --hover: #8b1e1e;
  --active: #d4b64a;
  --input: #426d96;
  --tile-size: 70vmin;
  --tile-gap: 9vmin;
  --focus-window-size: 70vmin;
  --sheet-cols: 5;
  --sheet-rows: 6;
  --map-node-size: 31px;
  --map-node-size-mobile: 26px;
  --map-dot-size: 7px;
  --map-anchor-right: 18px;
  --map-anchor-bottom: 18px;
  --map-anchor-right-mobile: 10px;
  --map-anchor-bottom-mobile: 10px;
}

* {
  box-sizing: border-box;
}

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

body {
  background:
    radial-gradient(circle at center, rgba(255, 255, 255, 0.018), transparent 42%),
    linear-gradient(180deg, #060606 0%, var(--bg) 100%);
  color: var(--text);
  font-family: Georgia, "Times New Roman", serif;
}

.shell-app,
.shell-main,
#grid-root,
.index-map,
.grid-shell,
.grid-viewport {
  width: 100%;
  height: 100%;
}

.shell-main {
  position: relative;
}

.grid-shell {
  position: relative;
  overflow: hidden;
}

.grid-shell::before {
  content: "";
  position: absolute;
  inset: 0;
  border: 1px solid var(--grid-line);
  pointer-events: none;
}

.grid-viewport {
  position: relative;
}

.grid-viewport::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 50%;
  width: var(--focus-window-size);
  height: var(--focus-window-size);
  transform: translate(-50%, -50%);
  box-shadow:
    0 0 0 9999px rgba(0, 0, 0, 0.08);
  pointer-events: none;
  z-index: 3;
}

.grid-sheet {
  position: absolute;
  left: 0;
  top: 0;
  display: grid;
  grid-template-columns: repeat(var(--sheet-cols), var(--tile-size));
  grid-template-rows: repeat(var(--sheet-rows), var(--tile-size));
  gap: var(--tile-gap);
  width: calc(var(--tile-size) * var(--sheet-cols) + var(--tile-gap) * (var(--sheet-cols) - 1));
  height: calc(var(--tile-size) * var(--sheet-rows) + var(--tile-gap) * (var(--sheet-rows) - 1));
  transition: transform 520ms cubic-bezier(0.2, 0.8, 0.2, 1);
  will-change: transform;
}

.grid-region {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 16px;
  width: var(--tile-size);
  height: var(--tile-size);
  padding: clamp(18px, 2.4vmin, 28px);
  border: 1px solid var(--tile-line);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.02), rgba(255, 255, 255, 0)),
    var(--surface-2);
  cursor: pointer;
  transform-origin: center;
  transition:
    border-color 180ms ease,
    transform 180ms ease;
}

.grid-region::after {
  content: "";
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.8);
  transition: background 220ms ease;
  pointer-events: none;
  z-index: 2;
}

.grid-region:hover {
  border-color: var(--hover);
}

.grid-region:hover::after {
  background: rgba(0, 0, 0, 0);
}

.grid-region:focus-visible {
  outline: 2px solid var(--active);
  outline-offset: 3px;
}

.grid-region.is-active {
  border-color: var(--active);
  transform: translateY(-1px) scale(1.12);
  z-index: 5;
  overflow: visible;
}

.grid-region.is-active::after {
  background: rgba(0, 0, 0, 0);
}

.grid-region.is-empty-cell {
  cursor: default;
}

.grid-region.is-empty-cell:hover {
  border-color: var(--tile-line);
}

.grid-region.is-empty-cell:hover::after {
  background: rgba(0, 0, 0, 0.8);
}

.grid-region__meta,
.grid-region__body {
  position: relative;
  z-index: 1;
}

.grid-region.is-active .grid-region__meta,
.grid-region.is-active .grid-region__body {
  z-index: 3;
}

.grid-region__meta {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  color: rgba(214, 214, 214, 0.7);
  font-family: "Courier New", monospace;
  font-size: clamp(0.6rem, 1.1vmin, 0.72rem);
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

.grid-region__label {
  color: var(--text);
  font-size: clamp(0.75rem, 1.4vmin, 0.9rem);
  letter-spacing: 0.18em;
}

.grid-region__body {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
}

.grid-region[data-module-key="SUDOKU"].is-active .grid-region__meta {
  display: none;
}

.grid-region[data-module-key="MAGIC"].is-active .grid-region__meta {
  display: none;
}

.grid-region[data-module-key="RANGOLI"].is-active .grid-region__meta {
  display: none;
}

.grid-region[data-module-key="PATTERNPLAY"].is-active .grid-region__meta {
  display: none;
}

.grid-region[data-module-key="PIXEL_PLAY"].is-active .grid-region__meta {
  display: none;
}

.grid-region[data-module-key="PATTERN_BANK"] .grid-region__body {
  align-items: stretch;
  justify-content: stretch;
  min-height: 0;
}

.grid-region[data-module-key="PATTERN_BANK"].is-active {
  overflow: hidden;
}

.grid-region[data-module-key="PATTERN_BANK"].is-active .grid-module__title {
  font-size: clamp(1.7rem, 3.5vmin, 2.75rem);
  letter-spacing: 0.22em;
}

.grid-module {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 16px;
  text-align: center;
}

.grid-module__tag {
  padding: 5px 9px;
  border: 1px solid var(--tile-line);
  color: var(--muted);
  font-family: "Courier New", monospace;
  font-size: clamp(0.55rem, 1vmin, 0.66rem);
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.grid-module__title {
  margin: 0;
  font-size: clamp(1.1rem, 2.1vmin, 1.6rem);
  font-weight: 500;
  letter-spacing: 0.28em;
  text-transform: uppercase;
}

.grid-region.is-active .grid-module__title {
  font-size: clamp(2rem, 4.6vmin, 3.8rem);
  color: var(--active);
}

.grid-module__text {
  margin: 0;
  max-width: 34ch;
  color: var(--muted);
  font-family: "Courier New", monospace;
  font-size: clamp(0.72rem, 1.35vmin, 0.92rem);
  line-height: 1.8;
}

.grid-region.is-active .grid-module__text {
  max-width: 42ch;
}

.grid-module__input {
  width: min(250px, 72%);
  padding: 11px 13px;
  border: 1px solid var(--input);
  background: rgba(66, 109, 150, 0.08);
  color: #cae0f0;
  font: inherit;
}

.grid-module__input::placeholder {
  color: rgba(202, 224, 240, 0.72);
}

/* ─── Pattern Bank ───────────────────────────────────────────────────────── */

.pattern-bank {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.pattern-bank__empty {
  font-family: monospace;
  font-size: 9px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 8px;
}

/* 3×3 thumbnail grid — fills entire module, no overflow */
.pattern-bank__dots {
  flex: 1;
  min-height: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(3, 1fr);
  gap: 4px;
}

/* Thumbnail card — fills its grid cell */
.pattern-bank__card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--grid-line);
  cursor: default;
  min-height: 0;
  transition: border-color 0.15s;
}

.pattern-bank__card:hover {
  border-color: var(--active);
}

.pattern-bank__thumb {
  width: 100%;
  height: 100%;
  display: block;
}

/* Type badge bottom-left */
.pattern-bank__card-badge {
  position: absolute;
  bottom: 4px;
  left: 5px;
  font-family: monospace;
  font-size: 7px;
  letter-spacing: 0.08em;
  color: rgba(255,255,255,0.35);
  text-transform: uppercase;
  pointer-events: none;
}

/* Hover tooltip */
.pattern-bank__card-tip {
  display: none;
  position: absolute;
  bottom: calc(100% + 6px);
  left: 0;
  background: var(--bg);
  border: 1px solid var(--grid-line);
  padding: 6px 10px;
  white-space: nowrap;
  z-index: 20;
  flex-direction: column;
  gap: 3px;
  pointer-events: none;
  min-width: 130px;
}

.pattern-bank__card:hover .pattern-bank__card-tip {
  display: flex;
}

.pattern-bank__tip-type {
  font-family: monospace;
  font-size: 8px;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
}

.pattern-bank__tip-law {
  font-family: monospace;
  font-size: 9px;
  color: var(--active);
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pattern-bank__tip-verdict {
  font-family: monospace;
  font-size: 8px;
  color: var(--text);
  max-width: 200px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pattern-bank__tip-date {
  font-family: monospace;
  font-size: 8px;
  color: var(--muted);
  margin-top: 2px;
}

/* Mini thumbnail preview (inactive tile) */
.pattern-bank__mini {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  margin-top: 6px;
}

.pattern-bank__mini-dot {
  aspect-ratio: 1;
  border: 1px solid var(--grid-line);
  overflow: hidden;
}

.sudoku-module {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 18px;
  text-align: left;
  overflow: visible;
}

.sudoku-module__meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--muted);
  font-family: "Courier New", monospace;
  font-size: clamp(0.58rem, 1vmin, 0.7rem);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.sudoku-module__puzzles,
.sudoku-module__controls {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.sudoku-module__controls-panel {
  position: absolute;
  right: calc(100% + 24px);
  top: 0;
  width: 170px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--tile-line);
  background: rgba(7, 7, 7, 0.96);
  z-index: 8;
}

.sudoku-module__keypad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  margin-top: 4px;
}

.sudoku-module__tab,
.sudoku-module__button {
  border: 1px solid var(--tile-line);
  background: transparent;
  color: var(--text);
  padding: 6px 10px;
  font-family: "Courier New", monospace;
  font-size: clamp(0.58rem, 1vmin, 0.7rem);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

.sudoku-module__key {
  border: 1px solid var(--tile-line);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
  min-height: 34px;
  font-family: "Courier New", monospace;
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
}

.sudoku-module__key:hover {
  border-color: var(--hover);
  color: #f0d2d2;
}

.sudoku-module__key--wide {
  grid-column: span 3;
}

.sudoku-module__tab:hover,
.sudoku-module__button:hover {
  border-color: var(--hover);
  color: #f0d2d2;
}

.sudoku-module__tab.is-active {
  border-color: var(--active);
  color: var(--active);
}

.sudoku-module__body {
  flex: 1;
  min-height: 0;
  display: block;
  position: relative;
}

.sudoku-module__board {
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  grid-template-rows: repeat(9, 1fr);
  gap: 0;
  aspect-ratio: 1;
  border: 1px solid var(--tile-line);
  background: rgba(255, 255, 255, 0.015);
}

.sudoku-module__cell {
  position: relative;
  border-right: 1px solid #272727;
  border-bottom: 1px solid #272727;
  background: rgba(0, 0, 0, 0.2);
}

.sudoku-module__cell.is-box-right {
  border-right-color: #4a4020;
  border-right-width: 2px;
}

.sudoku-module__cell.is-box-bottom {
  border-bottom-color: #4a4020;
  border-bottom-width: 2px;
}

.sudoku-module__cell.is-conflict {
  background: rgba(120, 22, 22, 0.35);
}

.sudoku-module__cell.is-valid {
  background: rgba(9, 18, 12, 0.32);
}

.sudoku-module__cell.is-selected {
  box-shadow: inset 0 0 0 1px rgba(212, 182, 74, 0.9);
  background: rgba(212, 182, 74, 0.1);
}

.sudoku-module__input {
  width: 100%;
  height: 100%;
  border: 0;
  background: transparent;
  color: var(--text);
  text-align: center;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(0.9rem, 1.8vmin, 1.35rem);
  outline: none;
}

.sudoku-module__input.is-given {
  color: var(--active);
}

.sudoku-module__input:focus {
  background: rgba(66, 109, 150, 0.18);
  color: #dcecff;
}

.sudoku-module__status {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 14px;
  border: 1px solid var(--tile-line);
  background: rgba(255, 255, 255, 0.02);
}

.sudoku-module__status.is-floating {
  position: absolute;
  left: calc(100% + 24px);
  top: 0;
  width: 220px;
  background: rgba(7, 7, 7, 0.96);
  z-index: 8;
}

.sudoku-module__status-title,
.sudoku-module__timing,
.sudoku-module__summary {
  font-family: "Courier New", monospace;
  text-transform: uppercase;
}

.sudoku-module__status-title {
  color: var(--muted);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
}

.sudoku-module__status-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-family: "Courier New", monospace;
  font-size: 0.74rem;
  line-height: 1.4;
}

.sudoku-module__status-label {
  color: var(--muted);
  text-transform: uppercase;
}

.sudoku-module__status-value {
  color: var(--text);
  text-align: right;
}

.sudoku-module__timing {
  margin-top: 6px;
  color: var(--active);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
}

.sudoku-module__summary {
  color: var(--muted);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  line-height: 1.5;
}

.sudoku-module__expression {
  margin-top: 2px;
  color: var(--muted);
  font-family: "Courier New", monospace;
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  line-height: 1.5;
  word-break: break-word;
}

.magic-module {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 18px;
  text-align: left;
  overflow: visible;
}

.magic-module__meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--muted);
  font-family: "Courier New", monospace;
  font-size: clamp(0.58rem, 1vmin, 0.7rem);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.magic-module__sizes,
.magic-module__presets,
.magic-module__controls {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.magic-module__controls-panel {
  position: absolute;
  right: calc(100% + 24px);
  top: 0;
  width: 182px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--tile-line);
  background: rgba(7, 7, 7, 0.96);
  z-index: 8;
}

.magic-module__tab,
.magic-module__button {
  border: 1px solid var(--tile-line);
  background: transparent;
  color: var(--text);
  padding: 6px 10px;
  font-family: "Courier New", monospace;
  font-size: clamp(0.58rem, 1vmin, 0.7rem);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

.magic-module__tab:hover,
.magic-module__button:hover,
.magic-module__key:hover {
  border-color: var(--hover);
  color: #f0d2d2;
}

.magic-module__tab.is-active {
  border-color: var(--active);
  color: var(--active);
}

.magic-module__helper {
  color: var(--muted);
  font-family: "Courier New", monospace;
  font-size: 0.6rem;
  line-height: 1.5;
  text-transform: uppercase;
}

.magic-module__keypad {
  display: grid;
  gap: 6px;
}

.magic-module__key {
  border: 1px solid var(--tile-line);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
  min-height: 34px;
  font-family: "Courier New", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  cursor: pointer;
}

.magic-module__body {
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.magic-module__board {
  display: grid;
  gap: 0;
  width: min(100%, 31rem);
  aspect-ratio: 1;
  border: 1px solid var(--tile-line);
  background: rgba(255, 255, 255, 0.015);
}

.magic-module__cell {
  position: relative;
  border-right: 1px solid #272727;
  border-bottom: 1px solid #272727;
  background: rgba(0, 0, 0, 0.2);
}

.magic-module__cell.is-conflict {
  background: rgba(120, 22, 22, 0.35);
}

.magic-module__cell.is-valid {
  background: rgba(9, 18, 12, 0.32);
}

.magic-module__cell.is-selected {
  box-shadow: inset 0 0 0 1px rgba(212, 182, 74, 0.9);
  background: rgba(212, 182, 74, 0.1);
}

.magic-module__input {
  width: 100%;
  height: 100%;
  border: 0;
  background: transparent;
  color: var(--text);
  text-align: center;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(0.85rem, 1.65vmin, 1.2rem);
  outline: none;
}

.magic-module__input.is-given {
  color: var(--active);
}

.magic-module__input:focus {
  background: rgba(66, 109, 150, 0.18);
  color: #dcecff;
}

.magic-module__status {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 14px;
  border: 1px solid var(--tile-line);
  background: rgba(255, 255, 255, 0.02);
}

.magic-module__status.is-floating {
  position: absolute;
  left: calc(100% + 24px);
  top: 0;
  width: 180px;
  background: rgba(7, 7, 7, 0.96);
  z-index: 8;
}

.magic-module__status-title,
.magic-module__timing,
.magic-module__summary {
  font-family: "Courier New", monospace;
  text-transform: uppercase;
}

.magic-module__status-title {
  color: var(--muted);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
}

.magic-module__status-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-family: "Courier New", monospace;
  font-size: 0.74rem;
  line-height: 1.4;
}

.magic-module__status-label {
  color: var(--muted);
  text-transform: uppercase;
}

.magic-module__status-value {
  color: var(--text);
  text-align: right;
}

.magic-module__timing {
  margin-top: 6px;
  color: var(--active);
  font-size: 0.66rem;
  letter-spacing: 0.08em;
}

.magic-module__summary {
  color: var(--muted);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  line-height: 1.5;
}

.magic-module__expression {
  margin-top: 2px;
  color: var(--muted);
  font-family: "Courier New", monospace;
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  line-height: 1.5;
  word-break: break-word;
}

.magic-module__sum {
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: "Courier New", monospace;
  font-size: 0.68rem;
  color: var(--muted);
}

.magic-module__sum--row {
  border-left: 1px solid var(--tile-line);
}

.magic-module__sum--col {
  border-top: 1px solid var(--tile-line);
}

.magic-module__sum--diag {
  flex-direction: column;
  gap: 1px;
  font-size: 0.56rem;
  border-top: 1px solid var(--tile-line);
  border-left: 1px solid var(--tile-line);
}

.magic-module__sum.is-ok { color: var(--active); }
.magic-module__sum.is-bad { color: #d44; }
.magic-module__sum--diag .is-ok { color: var(--active); }
.magic-module__sum--diag .is-bad { color: #d44; }

.pixel-play {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 18px;
  text-align: left;
  overflow: visible;
}

.pixel-play__meta,
.pixel-play__status-title,
.pixel-play__summary,
.pixel-play__slider-label,
.pixel-play__preview-id,
.pixel-play__preview-hex,
.pixel-play__status-row,
.pixel-play__button {
  font-family: "Courier New", monospace;
  text-transform: uppercase;
}

.pixel-play__meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--muted);
  font-size: clamp(0.58rem, 1vmin, 0.7rem);
  letter-spacing: 0.12em;
}

.pixel-play__controls-panel {
  position: absolute;
  right: calc(100% + 24px);
  top: 0;
  width: 188px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--tile-line);
  background: rgba(7, 7, 7, 0.96);
  z-index: 8;
}

.pixel-play__mode-block {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 4px;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.pixel-play__preview {
  min-height: 84px;
  padding: 10px;
  border: 1px solid var(--tile-line);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.pixel-play__preview-id {
  font-size: 0.82rem;
  letter-spacing: 0.14em;
}

.pixel-play__preview-hex {
  font-size: 0.58rem;
  letter-spacing: 0.08em;
}

.pixel-play__slider-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.pixel-play__slider-label {
  color: var(--muted);
  font-size: 0.58rem;
  letter-spacing: 0.1em;
}

.pixel-play__slider {
  width: 100%;
}

.pixel-play__slider--r {
  accent-color: #8b1e1e;
}

.pixel-play__slider--y {
  accent-color: var(--active);
}

.pixel-play__slider--b {
  accent-color: var(--input);
}

.pixel-play__actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
}

.pixel-play__button {
  border: 1px solid var(--tile-line);
  background: transparent;
  color: var(--text);
  padding: 7px 8px;
  font-size: 0.58rem;
  letter-spacing: 0.08em;
  cursor: pointer;
}

.pixel-play__button:hover {
  border-color: var(--hover);
  color: #f0d2d2;
}

.pixel-play__button.is-active {
  border-color: var(--active);
  color: var(--active);
}

.pixel-play__button:disabled {
  opacity: 0.4;
  cursor: default;
}

.pixel-play__body {
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.pixel-play__board {
  display: grid;
  grid-template-columns: repeat(9, 1fr);
  grid-template-rows: repeat(9, 1fr);
  gap: 4px;
  width: min(100%, 33rem);
  aspect-ratio: 1;
  padding: 12px;
  border: 1px solid var(--tile-line);
  background: rgba(255, 255, 255, 0.015);
}

.pixel-play__cell {
  border: 1px solid #252525;
  background: rgba(255, 255, 255, 0.02);
  color: var(--muted);
  padding: 0;
  font-family: "Courier New", monospace;
  font-size: 0.5rem;
  letter-spacing: 0.02em;
  cursor: pointer;
}

.pixel-play__cell:hover {
  border-color: var(--active);
  box-shadow: 0 0 0 1px rgba(212, 182, 74, 0.4);
}

.pixel-play__cell.is-user {
  box-shadow: inset 0 0 0 1px rgba(212, 182, 74, 0.45);
}

.pixel-play__cell.is-meru {
  box-shadow: inset 0 0 0 1px rgba(66, 109, 150, 0.45);
}

.pixel-play__cell.is-highlighted {
  box-shadow:
    inset 0 0 0 1px rgba(212, 182, 74, 0.55),
    0 0 0 1px rgba(212, 182, 74, 0.75);
}

.pixel-play__status {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 14px;
  border: 1px solid var(--tile-line);
  background: rgba(255, 255, 255, 0.02);
}

.pixel-play__status.is-floating {
  position: absolute;
  left: calc(100% + 24px);
  top: 0;
  width: 220px;
  background: rgba(7, 7, 7, 0.96);
  z-index: 8;
}

.pixel-play__status-title {
  color: var(--muted);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
}

.pixel-play__status-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-size: 0.74rem;
  line-height: 1.4;
}

.pixel-play__status-label {
  color: var(--muted);
}

.pixel-play__status-value {
  color: var(--text);
  text-align: right;
  font-family: "Courier New", monospace;
}

.pixel-play__summary {
  color: var(--muted);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  line-height: 1.6;
}

.pixel-play__section-label {
  color: var(--muted);
  font-family: "Courier New", monospace;
  font-size: 0.58rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  margin-top: 4px;
}

.pixel-play__color-dots {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.rangoli-module {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 18px;
  text-align: left;
  overflow: visible;
}

.rangoli-module__meta,
.rangoli-module__legend {
  display: flex;
  flex-direction: column;
  gap: 6px;
  color: var(--muted);
  font-family: "Courier New", monospace;
  font-size: clamp(0.58rem, 1vmin, 0.7rem);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.rangoli-module__controls {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.rangoli-module__controls-panel {
  position: absolute;
  right: calc(100% + 24px);
  top: 0;
  width: 180px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--tile-line);
  background: rgba(7, 7, 7, 0.96);
  z-index: 8;
}

.rangoli-module__button {
  border: 1px solid var(--tile-line);
  background: transparent;
  color: var(--text);
  padding: 6px 10px;
  font-family: "Courier New", monospace;
  font-size: clamp(0.58rem, 1vmin, 0.7rem);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

.rangoli-module__button:hover {
  border-color: var(--hover);
  color: #f0d2d2;
}

.rangoli-module__body {
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.rangoli-module__board {
  position: relative;
  width: min(100%, 32rem);
  aspect-ratio: 1;
}

.rangoli-module__canvas,
.rangoli-module__svg {
  width: 100%;
  height: 100%;
}

.rangoli-module__svg {
  display: block;
}

.rangoli-module__dot {
  fill: #f2f2f2;
}

.rangoli-module__path {
  stroke: #f1f1f1;
  stroke-width: 5;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.rangoli-module__hit-layer {
  position: absolute;
  inset: 7.2% 7.2%;
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  grid-template-rows: repeat(6, 1fr);
}

.rangoli-module__hit {
  border: 1px solid transparent;
  background: transparent;
  cursor: pointer;
}

.rangoli-module__hit:hover {
  border-color: rgba(139, 30, 30, 0.55);
  background: rgba(139, 30, 30, 0.08);
}

.rangoli-module__hit.is-selected {
  border-color: rgba(212, 182, 74, 0.75);
  background: rgba(212, 182, 74, 0.08);
}

.rangoli-module__status {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 14px;
  border: 1px solid var(--tile-line);
  background: rgba(255, 255, 255, 0.02);
}

.rangoli-module__status.is-floating {
  position: absolute;
  left: calc(100% + 24px);
  top: 0;
  width: 220px;
  background: rgba(7, 7, 7, 0.96);
  z-index: 8;
}

.rangoli-module__status-title,
.rangoli-module__summary {
  font-family: "Courier New", monospace;
  text-transform: uppercase;
}

.rangoli-module__status-title {
  color: var(--muted);
  font-size: 0.64rem;
  letter-spacing: 0.12em;
}

.rangoli-module__status-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-family: "Courier New", monospace;
  font-size: 0.74rem;
  line-height: 1.4;
}

.rangoli-module__status-label {
  color: var(--muted);
  text-transform: uppercase;
}

.rangoli-module__status-value {
  color: var(--text);
  text-align: right;
}

.rangoli-module__summary {
  color: var(--muted);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  line-height: 1.5;
}

.rangoli-base {
  position: relative;
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  gap: 18px;
  text-align: left;
  overflow: visible;
}

.rangoli-base__meta,
.rangoli-base__legend {
  color: var(--muted);
  font-family: "Courier New", monospace;
  font-size: clamp(0.58rem, 1vmin, 0.7rem);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.rangoli-base__meta {
  display: flex;
  flex-direction: row;
  justify-content: space-between;
}

.rangoli-base__legend {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.rangoli-base__controls {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.rangoli-base__variation-map {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px 14px;
  padding: 10px 0 4px;
}

.rangoli-base__variation-map::before {
  content: "";
  position: absolute;
  left: 16%;
  right: 16%;
  top: 50%;
  height: 1px;
  background: rgba(255, 255, 255, 0.08);
  transform: translateY(-50%);
  pointer-events: none;
}

.rangoli-base__variation-node {
  position: relative;
  min-width: 0;
  aspect-ratio: 1;
  border-radius: 999px;
  border: 1px solid rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.02);
  color: var(--muted);
  font-family: "Courier New", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
}

.rangoli-base__variation-node.is-active {
  border-color: var(--active);
  color: var(--active);
  background: rgba(227, 189, 0, 0.12);
}

.rangoli-base__variation-node:hover {
  border-color: var(--hover);
  color: var(--text);
}

.rangoli-base__keypad {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin-top: 6px;
}

.rangoli-base__keypad.is-disabled {
  opacity: 0.38;
}

.rangoli-base__key:disabled {
  cursor: default;
  opacity: 0.55;
}

.rangoli-base__controls-panel {
  position: absolute;
  right: calc(100% + 24px);
  top: 0;
  width: 180px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 14px;
  border: 1px solid var(--tile-line);
  background: rgba(7, 7, 7, 0.96);
  z-index: 8;
}

.rangoli-base__mode-block {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.rangoli-base__button {
  border: 1px solid var(--tile-line);
  background: transparent;
  color: var(--text);
  padding: 6px 10px;
  font-family: "Courier New", monospace;
  font-size: clamp(0.58rem, 1vmin, 0.7rem);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
}

.rangoli-base__button.is-active {
  border-color: var(--active);
  color: var(--active);
}

.rangoli-base__button:hover {
  border-color: var(--hover);
  color: #f0d2d2;
}

.rangoli-base__body {
  flex: 1;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.rangoli-base__board {
  width: min(100%, 28rem);
  aspect-ratio: 1;
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}

.rangoli-base__board--prototype {
  background: radial-gradient(circle at center, rgba(255, 255, 255, 0.025), rgba(255, 255, 255, 0) 68%);
}

.rangoli-base__svg {
  width: 100%;
  height: 100%;
  display: block;
}

.rangoli-base__generating {
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  opacity: 0.5;
  animation: rangoli-pulse 1.2s ease-in-out infinite;
}

@keyframes rangoli-pulse {
  0%, 100% { opacity: 0.3; }
  50%       { opacity: 0.7; }
}

.rangoli-base__ring {
  stroke: #666666;
  stroke-width: 7;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: none;
}

.rangoli-base__extension-line {
  stroke: #f0c52b;
  stroke-width: 8;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: none;
}

.rangoli-base__cross-line {
  stroke: #b3b3b3;
  stroke-width: 8;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: none;
}

.rangoli-base__guide-line {
  stroke: #d3ae32;
  stroke-width: 8;
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-dasharray: 14 8;
  opacity: 0.9;
  pointer-events: none;
}

/* Used by rangoliCreateModule love button in status panel */
.kolam-icons {
  display: flex;
  justify-content: center;
  gap: 10px;
  margin-top: 14px;
}

.kolam-icon-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  border: 1px solid var(--tile-line);
  background: none;
  color: var(--muted);
  font-size: 1rem;
  cursor: pointer;
  transition: color 0.18s, border-color 0.18s;
}

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

.kolam-icon-btn.is-loved {
  color: var(--active);
  border-color: var(--active);
  cursor: default;
}

.kolam-love-bar {
  position: absolute;
  bottom: -40px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
}

.kolam-love-bar .kolam-icon-btn {
  background: var(--surface-2);
}

.rangoli-base__cross-line--mirror {
  stroke: #9b2828;
  stroke-width: 8;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0.4;
  pointer-events: none;
}

.rangoli-base__dot {
  fill: #f4f4f4;
}

.rangoli-base__dot.is-selected {
  fill: var(--active);
}

.rangoli-base__dot-hit {
  fill: rgba(255, 255, 255, 0.001);
  pointer-events: all;
  cursor: pointer;
}

.rangoli-base__status {
  display: flex;
  flex-direction: column;
  gap: 9px;
  padding: 14px;
  border: 1px solid var(--tile-line);
  background: rgba(255, 255, 255, 0.02);
}

.rangoli-base__status.is-floating {
  position: absolute;
  left: calc(100% + 24px);
  top: 0;
  width: 220px;
  background: rgba(7, 7, 7, 0.96);
  z-index: 8;
}

.rangoli-base__status-title,
.rangoli-base__summary {
  font-family: "Courier New", monospace;
  text-transform: uppercase;
}

.rangoli-base__status-row {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  font-family: "Courier New", monospace;
  font-size: 0.74rem;
  line-height: 1.4;
}

.rangoli-base__status-label {
  color: var(--muted);
  text-transform: uppercase;
}

.rangoli-base__status-value {
  color: var(--text);
  text-align: right;
}

.rangoli-base__summary {
  color: var(--muted);
  font-size: 0.62rem;
  letter-spacing: 0.04em;
  line-height: 1.5;
}

.rangoli-base__meru-status {
  margin-top: 6px;
  color: var(--active);
  font-family: "Courier New", monospace;
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

/* ── MERU expression debug panel ─────────────────────────────── */
.kolam-expr-panel {
  margin-top: 10px;
  padding-top: 8px;
  border-top: 1px solid var(--tile-line);
}

.kolam-expr-toggle {
  background: none;
  border: none;
  color: var(--muted);
  font-family: "Courier New", monospace;
  font-size: 0.64rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  cursor: pointer;
  padding: 0;
  line-height: 1.4;
}

.kolam-expr-toggle:hover {
  color: var(--active);
}

.kolam-expr-body {
  margin-top: 8px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.kolam-expr-value {
  max-width: 120px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 0.64rem;
  color: var(--text);
}

.kolam-lol-block {
  margin-top: 8px;
  padding: 8px;
  background: rgba(255, 255, 255, 0.02);
  border: 1px solid var(--tile-line);
  font-family: "Courier New", monospace;
  font-size: 0.56rem;
  color: var(--muted);
  line-height: 1.55;
  white-space: pre;
  overflow-x: auto;
  max-height: 180px;
  overflow-y: auto;
}

#index-map-root {
  position: fixed;
  right: var(--map-anchor-right);
  bottom: var(--map-anchor-bottom);
  z-index: 10;
  width: auto;
  height: auto;
}

.index-map {
  width: 100%;
  height: 100%;
  padding: 10px;
  background: transparent;
  backdrop-filter: none;
  overflow: visible;
}

.index-map__field {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: visible;
}

.index-map__cluster {
  position: absolute;
  top: 0;
  left: 0;
  transform-origin: top left;
}

.index-map__frame {
  display: none;
}

.index-map__info {
  position: absolute;
  left: 0;
  bottom: 0;
  z-index: 4;
  min-width: 86px;
  padding: 6px 8px;
  border: 1px solid rgba(205, 205, 205, 0.45);
  background: rgba(8, 8, 8, 0.94);
  color: #d8d8d8;
  font-family: "Courier New", monospace;
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  line-height: 1;
  text-align: left;
  text-transform: uppercase;
  opacity: 0;
  pointer-events: none;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.55);
  transition: opacity 140ms ease;
}

.index-map__info.is-visible {
  opacity: 1;
}

.index-map__path {
  position: absolute;
  left: 0;
  top: 0;
  overflow: visible;
  pointer-events: none;
  z-index: 1;
}

.index-map__node {
  position: absolute;
  z-index: 2;
  width: var(--map-node-size);
  height: var(--map-node-size);
  transform: translate(-50%, -50%);
  border: 1px solid var(--tile-line);
  border-radius: 999px;
  background: #121212;
  color: transparent;
  cursor: pointer;
  transition:
    border-color 160ms ease,
    background 160ms ease,
    transform 160ms ease,
    opacity 160ms ease;
}

.index-map__node.is-empty,
.index-map__node.is-hidden {
  opacity: 0;
  pointer-events: none;
}

.index-map__node:hover {
  border-color: var(--hover);
  background: #2a0909;
}

.index-map__node.is-active {
  border-color: var(--active);
  background: #2a2310;
}

.index-map__node.is-visited {
  border-color: #727272;
}

.index-map__dot {
  position: absolute;
  left: 50%;
  top: 50%;
  width: var(--map-dot-size);
  height: var(--map-dot-size);
  border-radius: 999px;
  background: #9a9a9a;
  transform: translate(-50%, -50%);
}

.index-map__node.is-visited .index-map__dot {
  background: #c8c8c8;
}

.index-map__node.is-active .index-map__dot {
  background: var(--active);
}

.index-map__trail-line {
  stroke: rgba(210, 210, 210, 0.7);
  stroke-width: 1.25;
  stroke-linecap: round;
}

@media (max-width: 900px) {
  :root {
    --tile-size: 74vw;
    --tile-gap: 10vw;
    --focus-window-size: 74vw;
  }

  .grid-viewport::before {
    width: var(--focus-window-size);
    height: var(--focus-window-size);
  }

  .grid-region.is-active .grid-module__title {
    font-size: clamp(1.6rem, 7vw, 2.8rem);
  }

  .sudoku-module__body {
    display: block;
  }

  .sudoku-module__controls-panel {
    position: static;
    width: auto;
    transform: none;
    margin-bottom: 14px;
  }

  .sudoku-module__status.is-floating {
    position: static;
    width: auto;
    transform: none;
    margin-top: 14px;
  }

  .magic-module__controls-panel {
    position: static;
    width: auto;
    margin-bottom: 14px;
  }

  .magic-module__status.is-floating {
    position: static;
    width: auto;
    margin-top: 14px;
  }

  .pixel-play__controls-panel {
    position: static;
    width: auto;
    margin-bottom: 14px;
  }

  .pixel-play__status.is-floating {
    position: static;
    width: auto;
    margin-top: 14px;
  }

  .rangoli-module__controls-panel {
    position: static;
    width: auto;
    margin-bottom: 14px;
  }

  .rangoli-module__status.is-floating {
    position: static;
    width: auto;
    margin-top: 14px;
  }

  .rangoli-base__controls-panel {
    position: static;
    width: auto;
    margin-bottom: 14px;
  }

  .rangoli-base__status.is-floating {
    position: static;
    width: auto;
    margin-top: 14px;
  }

  .pattern-bank__summary {
    grid-template-columns: 1fr;
  }

  .pattern-bank__metrics {
    grid-template-columns: 1fr;
  }

  #index-map-root {
    right: var(--map-anchor-right-mobile);
    bottom: var(--map-anchor-bottom-mobile);
    width: auto;
    height: auto;
  }

  .index-map__node {
    width: var(--map-node-size-mobile);
    height: var(--map-node-size-mobile);
  }

}

/* ─── Scrapbook Module ──────────────────────────────────────────────────── */

.scrapbook {
  display: flex;
  flex-direction: column;
  height: 100%;
  gap: 10px;
}

/* Filter bar — 5 equal columns */
.scrapbook__controls {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 5px;
  flex-shrink: 0;
}

.scrapbook__filter-btn {
  font-family: monospace;
  font-size: 9px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 4px 0;
  border: 1px solid var(--grid-line);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  text-align: center;
  transition: border-color 0.15s, color 0.15s;
}

.scrapbook__filter-btn:hover {
  border-color: var(--hover);
  color: var(--fg);
}

.scrapbook__filter-btn.is-active {
  border-color: var(--active);
  color: var(--active);
}

/* Body: dot grid left + detail right */
.scrapbook__body {
  display: flex;
  gap: 12px;
  flex: 1;
  min-height: 0;
}

.scrapbook__left {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-width: 0;
}

/* Dot grid — 5 columns */
.scrapbook__dots {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 8px;
}

/* Each numbered circle */
.scrapbook__dot {
  position: relative;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 1px solid var(--grid-line);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: border-color 0.15s;
}

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

.scrapbook__dot.is-selected {
  border-color: var(--active);
  background: rgba(255,255,255,0.04);
}

.scrapbook__dot-num {
  font-family: monospace;
  font-size: 9px;
  color: var(--muted);
  pointer-events: none;
}

.scrapbook__dot.is-selected .scrapbook__dot-num {
  color: var(--active);
}

/* Hover tooltip */
.scrapbook__dot-tip {
  display: none;
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%);
  background: var(--bg);
  border: 1px solid var(--grid-line);
  padding: 5px 8px;
  white-space: nowrap;
  z-index: 20;
  flex-direction: column;
  gap: 3px;
  pointer-events: none;
}

.scrapbook__dot:hover .scrapbook__dot-tip {
  display: flex;
}

.scrapbook__dot-tip-type {
  font-family: monospace;
  font-size: 8px;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-transform: uppercase;
}

.scrapbook__dot-tip-law {
  font-family: monospace;
  font-size: 9px;
  color: var(--active);
  max-width: 140px;
  overflow: hidden;
  text-overflow: ellipsis;
}

.scrapbook__empty {
  font-family: monospace;
  font-size: 9px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.scrapbook__overflow {
  font-family: monospace;
  font-size: 8px;
  color: var(--muted);
  letter-spacing: 0.04em;
}

/* Detail panel — fixed width, word-wrapping */
.scrapbook__detail {
  flex: 0 0 200px;
  width: 200px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  border-left: 1px solid var(--grid-line);
  padding-left: 12px;
  overflow: hidden;
}

.scrapbook__detail-hint {
  font-family: monospace;
  font-size: 9px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.scrapbook__detail-header {
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex-wrap: wrap;
}

.scrapbook__detail-type {
  font-family: monospace;
  font-size: 8px;
  letter-spacing: 0.1em;
  color: var(--muted);
  text-transform: uppercase;
}

.scrapbook__detail-date {
  font-family: monospace;
  font-size: 8px;
  color: var(--muted);
}

.scrapbook__detail-row {
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.scrapbook__detail-label {
  font-family: monospace;
  font-size: 8px;
  letter-spacing: 0.08em;
  color: var(--muted);
  text-transform: uppercase;
}

.scrapbook__detail-value {
  font-family: monospace;
  font-size: 10px;
  color: var(--active);
  word-break: break-word;
  overflow-wrap: break-word;
  line-height: 1.5;
}

.scrapbook__actions {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: auto;
}

.scrapbook__action-btn {
  font-family: monospace;
  font-size: 9px;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border: 1px solid var(--grid-line);
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  text-align: left;
  transition: border-color 0.15s, color 0.15s;
}

.scrapbook__action-btn:hover {
  border-color: var(--active);
  color: var(--active);
}

.scrapbook__action-btn--delete:hover {
  border-color: #888;
  color: #888;
}