:root {
  color-scheme: light dark;
  font-family: "Yu Gothic UI", "Meiryo", sans-serif;
  color: #193326;
  background: #e9efe9;
  --board-preview-scale: 1;
  --cell-size: calc(42px * var(--board-preview-scale));
  --line-color: #8ca798;
}

* { box-sizing: border-box; }

body { margin: 0; min-width: 320px; }
button, select { font: inherit; }

.tool-shell { width: min(1480px, calc(100% - 24px)); margin: 24px auto 48px; }
.tool-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; margin-bottom: 14px; padding: 4px 4px 8px; }
.tool-head h1 { margin: 3px 0 5px; font-size: clamp(1.35rem, 3vw, 2rem); }
.tool-head p { margin: 0; color: #607066; font-size: .84rem; font-weight: 700; }
.tool-head .eyebrow { color: #287348; font-size: .7rem; letter-spacing: .13em; }
.tool-theme-toggle {
  width: 2.5rem;
  height: 2.5rem;
  min-width: 2.5rem;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border: 1px solid #c8d5ca;
  border-radius: 10px;
  padding: 0;
  color: #f39a22;
  background: #fffdf7;
  box-shadow: 0 4px 14px rgba(27, 57, 39, .08);
  cursor: pointer;
  font-size: 1.45rem;
  font-weight: 950;
  line-height: 1;
}
.tool-ui-icon {
  display: block;
  width: 1.25rem;
  height: 1.25rem;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  pointer-events: none;
}
.tool-theme-icon-moon { display: none; }
.tool-theme-toggle[aria-pressed="true"] .tool-theme-icon-sun { display: none; }
.tool-theme-toggle[aria-pressed="true"] .tool-theme-icon-moon { display: block; }
.tool-theme-toggle:hover { border-color: #91ad9a; background: #f5faf6; }

.panel {
  margin-top: 12px;
  padding: 16px;
  border: 1px solid #cbd8ce;
  border-radius: 16px;
  background: #fffdf7;
  box-shadow: 0 8px 24px rgba(27, 57, 39, .07);
}

.section-head, .preview-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
}
.section-head { margin-bottom: 12px; }
.section-head h2, .preview-head h2 { margin: 0; font-size: 1rem; }
.status { color: #607066; font-size: .73rem; font-weight: 800; }
.status.is-error { color: #b42318; }

.control-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.tier-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; padding-top: 10px; }
.field { min-width: 0; display: grid; gap: 5px; color: #607066; font-size: .73rem; font-weight: 900; }
.field select {
  width: 100%;
  min-width: 0;
  min-height: 40px;
  padding: 0 10px;
  border: 1px solid #c8d5ca;
  border-radius: 10px;
  color: #193326;
  background: #fff;
  font-size: .82rem;
  font-weight: 800;
}
.reference-row {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 10px;
  margin-top: 10px;
  color: #607066;
  font-size: .73rem;
  font-weight: 900;
}
.reference-row strong {
  min-width: 0;
  padding: 9px 10px;
  overflow: hidden;
  border: 1px solid #d2ddd4;
  border-radius: 10px;
  color: #28553b;
  background: #f4f8f4;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.tier-details { margin-top: 10px; border-top: 1px solid #dce5de; }
.tier-details summary {
  width: fit-content;
  padding-top: 10px;
  color: #346149;
  cursor: pointer;
  font-size: .77rem;
  font-weight: 900;
}

.preview-head { align-items: flex-start; margin-bottom: 12px; }
.preview-head p { margin: 4px 0 0; color: #66756c; font-size: .72rem; font-weight: 700; }
.preview-tools { display: grid; justify-items: end; gap: 8px; }
.preview-control-row { display: flex; align-items: center; justify-content: flex-end; flex-wrap: wrap; gap: 7px; }
.orientation-switch {
  display: inline-grid;
  grid-template-columns: repeat(2, 44px);
  padding: 3px;
  border: 1px solid #c8d5ca;
  border-radius: 10px;
  background: #eef4ef;
}
.orientation-switch button {
  min-height: 29px;
  border: 0;
  border-radius: 7px;
  color: #617168;
  background: transparent;
  cursor: pointer;
  font-size: .72rem;
  font-weight: 900;
}
.orientation-switch button.is-active { color: #fff; background: #287348; }
.zoom-switch {
  display: inline-grid;
  grid-template-columns: 32px 52px 32px;
  padding: 3px;
  border: 1px solid #c8d5ca;
  border-radius: 10px;
  background: #eef4ef;
}
.zoom-switch button {
  min-height: 29px;
  border: 0;
  border-radius: 7px;
  padding: 0;
  color: #51675a;
  background: transparent;
  cursor: pointer;
  font-size: .9rem;
  font-weight: 950;
  line-height: 1;
}
.zoom-switch button:hover:not(:disabled) { background: rgba(40, 115, 72, .1); }
.zoom-switch button:disabled { opacity: .35; cursor: default; }
.zoom-switch .zoom-value {
  color: #fff;
  background: #557162;
  font-size: .68rem;
}
.zoom-switch .zoom-value:hover { background: #405e4e; }
.legend { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 7px 11px; color: #64736a; font-size: .68rem; font-weight: 800; }
.legend span { display: inline-flex; align-items: center; gap: 4px; }
.legend i { width: 11px; height: 11px; border: 2px solid #83a08e; border-radius: 50%; background: #edf4ef; }
.legend .legend-start { background: #8ed8a9; }
.legend .legend-advanced { border-color: #bf8446; background: #f2bf72; }
.legend .legend-special { border-color: #805ac2; background: #b79ae3; }
.legend .legend-gate { border-radius: 3px; border-color: #4d6e91; background: #83a7ca; }

.board-viewport {
  width: 100%;
  overflow: auto;
  overscroll-behavior-inline: contain;
  border: 1px solid #d5e0d7;
  border-radius: 13px;
  background:
    linear-gradient(rgba(255, 255, 255, .76), rgba(255, 255, 255, .76)),
    repeating-linear-gradient(45deg, #e7eee8 0 8px, #f2f6f3 8px 16px);
}
.board-canvas {
  width: max-content;
  min-width: 100%;
  display: grid;
  place-items: start center;
  padding: 15px;
}
.board-canvas.is-vertical {
  display: grid;
  place-items: start center;
}
.unified-board {
  padding: 10px;
  border: 1px solid #d2ddd5;
  border-radius: 12px;
  background: rgba(255, 253, 247, .9);
}
.unified-board-head {
  display: grid;
  grid-template-columns: 13fr 13fr 12fr;
  min-height: 24px;
  margin-bottom: 5px;
}
.unified-board-head > span {
  padding: 0 8px;
  color: #264d37;
  font-size: .82rem;
  font-weight: 900;
}
.unified-board-head small { color: #6d7b72; font-size: .65rem; }
.unified-board.is-vertical .unified-board-head {
  display: block;
  text-align: center;
}.board-grid {
  display: grid;
  gap: 0;
  position: relative;
}
.board-layer-background {
  position: absolute;
  z-index: 0;
  left: calc(var(--layer-left) * var(--cell-size));
  top: calc(var(--layer-top) * var(--cell-size));
  width: calc(var(--layer-width) * var(--cell-size));
  height: calc(var(--layer-height) * var(--cell-size));
  border: 1px solid transparent;
  border-radius: 14px;
  pointer-events: none;
}
.board-layer-b1 { border-color: rgba(48, 132, 77, .26); background: rgba(75, 165, 102, .11); }
.board-layer-b2 { border-color: rgba(57, 105, 176, .26); background: rgba(75, 126, 198, .1); }
.board-layer-b3 { border-color: rgba(137, 77, 181, .26); background: rgba(155, 94, 196, .1); }
.board-cell {
  width: var(--cell-size);
  height: var(--cell-size);
  position: relative;
  z-index: 1;
}

.board-node {
  width: 100%;
  height: 100%;
  display: grid;
  place-items: center;
  position: relative;
  z-index: 1;
  border: 0;
  padding: 0;
  appearance: none;
  color: #183226;
  background-color: transparent;
  background-image: var(--tile-base);
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  cursor: pointer;
}
.board-node::before {
  content: "";
  position: absolute;
  z-index: 1;
  inset: 2px;
  background-image: var(--tile-icon, none);
  background-repeat: no-repeat;
  background-position: center;
  background-size: contain;
  pointer-events: none;
}
.board-node:hover,
.board-node:focus-visible,
.board-node.is-selected {
  outline: none;
  filter: brightness(1.1) drop-shadow(0 0 4px rgba(40, 115, 72, .65));
}
.board-node.is-virtual { opacity: .62; cursor: default; }
.board-node-label {
  position: absolute;
  z-index: 2;
  right: 2px;
  bottom: 2px;
  font-size: .54rem;
  font-weight: 950;
  line-height: 1;
  -webkit-text-stroke: 2px rgba(255, 253, 247, .95);
  paint-order: stroke fill;
  pointer-events: none;
}
.special-summary {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 9px;
  margin-top: 10px;
}
.special-board-group {
  min-width: 0;
  border: 1px solid;
  border-radius: 13px;
  padding: 9px;
}
.special-board-group h3 {
  display: flex;
  align-items: center;
  gap: 7px;
  margin: 0 0 7px;
  font-size: .76rem;
}
.special-board-group h3 span {
  display: grid;
  place-items: center;
  min-width: 30px;
  min-height: 24px;
  border-radius: 8px;
  color: #fff;
  font-size: .68rem;
  font-weight: 950;
}
.special-board-group h3 small { color: #65756b; font-size: .62rem; }
.special-board-b1 { border-color: rgba(48, 132, 77, .25); background: rgba(75, 165, 102, .07); }
.special-board-b2 { border-color: rgba(57, 105, 176, .25); background: rgba(75, 126, 198, .07); }
.special-board-b3 { border-color: rgba(137, 77, 181, .25); background: rgba(155, 94, 196, .07); }
.special-board-b1 h3 span { background: #378456; }
.special-board-b2 h3 span { background: #4675b7; }
.special-board-b3 h3 span { background: #8754ad; }
.special-board-items { display: flex; flex-wrap: wrap; gap: 6px; }
.special-board-item {
  min-width: 0;
  display: inline-grid;
  grid-template-columns: 34px minmax(0, 1fr) auto;
  align-items: center;
  gap: 5px;
  flex: 1 1 150px;
  min-height: 38px;
  border: 1px solid rgba(91, 112, 98, .16);
  border-radius: 10px;
  padding: 2px 7px 2px 2px;
  color: #294636;
  background: rgba(255, 255, 255, .66);
  font-size: .65rem;
  font-weight: 900;
}
.special-board-tile {
  width: 34px;
  height: 34px;
  position: relative;
  background: var(--tile-base) center / contain no-repeat;
}
.special-board-tile::after {
  content: "";
  position: absolute;
  inset: 2px;
  background: var(--tile-icon, none) center / contain no-repeat;
}
.special-board-count {
  border-radius: 999px;
  padding: 2px 5px;
  color: #5d6d63;
  background: rgba(82, 108, 91, .1);
  font-size: .58rem;
}
.tile-popover {
  width: min(360px, calc(100vw - 20px));
  position: fixed;
  z-index: 100;
  padding: 13px 36px 13px 13px;
  border: 1px solid #b9cabe;
  border-radius: 13px;
  color: #52645a;
  background: rgba(255, 253, 247, .98);
  box-shadow: 0 12px 30px rgba(23, 52, 35, .22);
  font-size: .75rem;
  font-weight: 800;
}
.tile-popover[hidden] { display: none; }
.tile-popover-close {
  width: 27px;
  height: 27px;
  display: grid;
  place-items: center;
  position: absolute;
  top: 6px;
  right: 6px;
  border: 0;
  border-radius: 50%;
  color: #5f7167;
  background: transparent;
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
}
.tile-popover-close:hover { background: #e8f0ea; }
.tile-popover-content { display: grid; grid-template-columns: 52px minmax(0, 1fr); align-items: center; gap: 11px; }
.detail-tile {
  width: 52px;
  height: 52px;
  position: relative;
  background: var(--tile-base) center / contain no-repeat;
}
.detail-tile::after {
  content: "";
  position: absolute;
  inset: 2px;
  background: var(--tile-icon, none) center / contain no-repeat;
}
.detail-copy { min-width: 0; display: grid; gap: 3px; }
.tile-popover strong { color: #214c35; }
.tile-popover .detail-effect { color: #193326; font-size: .82rem; }
.detail-costs { display: flex; align-items: center; flex-wrap: wrap; gap: 4px 8px; margin-top: 3px; }
.detail-material { display: inline-flex; align-items: center; gap: 2px; color: #52645a; font-size: .7rem; }
.detail-material img { width: 22px; height: 22px; object-fit: contain; }
.detail-material b { font-weight: 950; }
.detail-cost-empty { color: #68776e; font-size: .7rem; }
:root[data-theme="light"] { color-scheme: light; }
:root[data-theme="dark"] { color-scheme: dark; color: #edf6f0; background: #0d1621; --line-color: #5e7d6b; }
:root[data-theme="dark"] .tool-head p,
:root[data-theme="dark"] .field,
:root[data-theme="dark"] .status,
:root[data-theme="dark"] .preview-head p,
:root[data-theme="dark"] .legend,
:root[data-theme="dark"] .reference-row { color: #aebdb3; }
:root[data-theme="dark"] .panel,
:root[data-theme="dark"] .unified-board { border-color: #344454; background: #142231; box-shadow: 0 10px 28px rgba(0, 0, 0, .28); }
:root[data-theme="dark"] .field select { color: #edf6f0; border-color: #405368; background: #101c29; }
:root[data-theme="dark"] .tool-theme-toggle { color: #f5c94e; border-color: #405368; background: #142231; box-shadow: 0 4px 14px rgba(0, 0, 0, .24); }
:root[data-theme="dark"] .tool-theme-toggle:hover { border-color: #60788f; background: #1a2a3a; }
:root[data-theme="dark"] .orientation-switch { border-color: #405368; background: #101c29; }
:root[data-theme="dark"] .orientation-switch button { color: #aebdb3; }
:root[data-theme="dark"] .orientation-switch button.is-active { color: #fff; background: #347c50; }
:root[data-theme="dark"] .zoom-switch { border-color: #405368; background: #101c29; }
:root[data-theme="dark"] .zoom-switch button { color: #c5d4ca; }
:root[data-theme="dark"] .zoom-switch button:hover:not(:disabled) { background: rgba(157, 204, 173, .12); }
:root[data-theme="dark"] .zoom-switch .zoom-value { color: #fff; background: #3d6550; }
:root[data-theme="dark"] .zoom-switch .zoom-value:hover { background: #4b785f; }
:root[data-theme="dark"] .reference-row strong,
:root[data-theme="dark"] .tile-popover { color: #c9ddd0; border-color: #405368; background: rgba(16, 28, 41, .98); }
:root[data-theme="dark"] .reference-row strong,
:root[data-theme="dark"] .tile-popover strong,
:root[data-theme="dark"] .tile-popover .detail-effect { color: #dff4e6; }
:root[data-theme="dark"] .detail-material { color: #d5e6db; }
:root[data-theme="dark"] .detail-cost-empty { color: #91a298; }
:root[data-theme="dark"] .tile-popover-close { color: #b9c9bf; }
:root[data-theme="dark"] .tile-popover-close:hover { background: #223446; }
:root[data-theme="dark"] .tier-details { border-color: #344454; }
:root[data-theme="dark"] .tier-details summary { color: #9dccad; }
:root[data-theme="dark"] .board-viewport {
  border-color: #344454;
  background:
    linear-gradient(rgba(13, 22, 33, .84), rgba(13, 22, 33, .84)),
    repeating-linear-gradient(45deg, #1d2b39 0 8px, #263644 8px 16px);
}
:root[data-theme="dark"] .unified-board-head > span { color: #dff4e6; }
:root[data-theme="dark"] .board-node-label { color: #d9efe0; -webkit-text-stroke-color: rgba(10, 20, 28, .92); }
:root[data-theme="dark"] .board-layer-b1 { border-color: rgba(89, 190, 119, .28); background: rgba(64, 155, 92, .11); }
:root[data-theme="dark"] .board-layer-b2 { border-color: rgba(102, 153, 228, .28); background: rgba(70, 117, 187, .11); }
:root[data-theme="dark"] .board-layer-b3 { border-color: rgba(187, 125, 228, .28); background: rgba(144, 82, 184, .11); }
:root[data-theme="dark"] .special-board-b1 { border-color: rgba(89, 190, 119, .24); background: rgba(64, 155, 92, .08); }
:root[data-theme="dark"] .special-board-b2 { border-color: rgba(102, 153, 228, .24); background: rgba(70, 117, 187, .08); }
:root[data-theme="dark"] .special-board-b3 { border-color: rgba(187, 125, 228, .24); background: rgba(144, 82, 184, .08); }
:root[data-theme="dark"] .special-board-group h3 small { color: #afc0b5; }
:root[data-theme="dark"] .special-board-item {
  color: #deeee4;
  border-color: rgba(184, 207, 191, .14);
  background: rgba(12, 23, 34, .58);
}
:root[data-theme="dark"] .special-board-count { color: #c8d9ce; background: rgba(194, 216, 201, .1); }
:root[data-theme="dark"] .status.is-error { color: #fda4af; }
@media (max-width: 760px) {
  :root { --cell-size: calc(38px * var(--board-preview-scale)); }
  .tool-shell { width: min(100% - 12px, 1480px); margin-top: 10px; }
  .panel { padding: 12px; }
  .control-grid, .tier-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .preview-head { flex-direction: column; }
  .preview-tools { justify-items: start; }
  .preview-control-row { justify-content: flex-start; }
  .legend { justify-content: flex-start; }
  .board-canvas { padding: 9px; }
  .special-summary { grid-template-columns: 1fr; }
}