/*
 * museum.css
 * little-deeplearning(AI進化の博物館)の館内共通スタイル。
 * ダーク基調(照明を落とした展示室)固定デザイン。
 */

:root {
  --bg: #0d0e12;
  --panel-bg: #1c1f28;
  --panel-border: #2a2e3a;
  --text: #e8e8ec;
  --text-dim: #9aa0ae;
  --accent: #ffd166;
  --positive: #ff8a5c;
  --negative: #5cc8ff;
  --ok: #7ee787;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Hiragino Sans", "Yu Gothic", "Noto Sans JP", sans-serif;
  line-height: 1.7;
  overflow-x: hidden;
}

a {
  color: var(--accent);
}

input, select, textarea {
  font-size: 16px;
}

.museum-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  background: var(--panel-bg);
  border-bottom: 1px solid var(--panel-border);
  position: sticky;
  top: 0;
  z-index: 10;
  flex-wrap: wrap;
}

.museum-header h1 {
  font-size: 1.05rem;
  margin: 0;
  flex: 1 1 auto;
  min-width: 0;
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
}

.museum-header a {
  text-decoration: none;
  font-size: 0.9rem;
  white-space: nowrap;
  padding: 4px 10px;
  border-radius: 6px;
  border: 1px solid var(--panel-border);
}

.museum-header a:hover {
  background: var(--panel-border);
}

.era-badge {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--bg);
  background: var(--accent);
  padding: 2px 10px;
  border-radius: 999px;
  font-weight: bold;
}

.exhibit {
  max-width: 900px;
  margin: 0 auto;
  padding: 24px 16px 64px;
}

.exhibit-panel {
  background: var(--panel-bg);
  border: 1px solid var(--panel-border);
  border-radius: 12px;
  padding: 20px;
  margin: 20px 0;
}

.exhibit-panel h2 {
  margin-top: 0;
}

.exhibit-panel p {
  color: var(--text-dim);
}

.canvas-wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  align-items: flex-start;
  justify-content: center;
}

canvas {
  max-width: 100%;
  height: auto;
  background: var(--bg);
  border-radius: 8px;
  border: 1px solid var(--panel-border);
  touch-action: none;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin: 12px 0;
}

.controls label {
  font-size: 0.85rem;
  color: var(--text-dim);
  display: flex;
  align-items: center;
  gap: 6px;
}

button {
  font-family: inherit;
  font-size: 0.9rem;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--panel-border);
  background: #262a36;
  color: var(--text);
  cursor: pointer;
}

button:hover {
  background: var(--panel-border);
}

button.primary {
  background: var(--accent);
  color: #1a1400;
  border-color: var(--accent);
  font-weight: bold;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.stat-row {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  font-variant-numeric: tabular-nums;
  font-size: 0.9rem;
  color: var(--text-dim);
  margin: 8px 0;
}

.stat-row strong {
  color: var(--text);
}

.celebrate {
  display: none;
  color: var(--ok);
  font-weight: bold;
  margin-top: 8px;
}

.celebrate.show {
  display: block;
}

details {
  margin-top: 10px;
  color: var(--text-dim);
  font-size: 0.9rem;
}

details summary {
  cursor: pointer;
  color: var(--accent);
}

.entrance-door {
  display: block;
  padding: 16px;
  margin: 12px 0;
  border-radius: 10px;
  border: 1px solid var(--panel-border);
  background: var(--panel-bg);
  text-decoration: none;
  color: var(--text);
}

.entrance-door:hover {
  background: var(--panel-border);
}

.entrance-door.locked {
  cursor: not-allowed;
  opacity: 0.55;
}

.entrance-door .door-year {
  color: var(--accent);
  font-size: 0.85rem;
}

.entrance-door .door-title {
  font-size: 1.1rem;
  margin: 4px 0;
}

.entrance-door .door-status {
  font-size: 0.8rem;
  color: var(--text-dim);
}

.room-nav {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-top: 32px;
  flex-wrap: wrap;
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
  gap: 8px;
  margin: 12px 0;
}

.gallery-item {
  cursor: pointer;
  border: 2px solid var(--panel-border);
  border-radius: 6px;
  padding: 4px;
  background: var(--bg);
  text-align: center;
}

.gallery-item:hover {
  border-color: var(--accent);
}

.gallery-item canvas {
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  image-rendering: pixelated;
  border-radius: 2px;
}

.gallery-item.correct {
  border-color: var(--ok);
}

.gallery-item.wrong {
  border-color: var(--positive);
}

.gallery-item .gallery-caption {
  font-size: 0.7rem;
  color: var(--text-dim);
  margin-top: 2px;
}

.confidence-bars {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin: 12px 0;
}

.confidence-row {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.85rem;
  font-variant-numeric: tabular-nums;
}

.confidence-row .digit-label {
  width: 1.2em;
  text-align: right;
  color: var(--text-dim);
}

.confidence-bar-track {
  flex: 1;
  background: var(--panel-border);
  border-radius: 4px;
  height: 12px;
  overflow: hidden;
}

.confidence-bar-fill {
  height: 100%;
  background: var(--accent);
  transition: width 0.1s ease-out;
}

.confidence-row .pct-label {
  width: 3.5em;
  text-align: right;
  color: var(--text-dim);
}

.predicted-digit {
  font-size: 3rem;
  font-weight: bold;
  color: var(--accent);
  text-align: center;
}

.filter-select {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin: 8px 0;
}

.filter-select button {
  padding: 4px 10px;
  font-size: 0.8rem;
}

.filter-select button.active {
  background: var(--accent);
  color: #1a1400;
  border-color: var(--accent);
  font-weight: bold;
}

.featuremap-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(56px, 1fr));
  gap: 6px;
  margin: 12px 0;
}

.featuremap-grid .featuremap-item {
  text-align: center;
}

.featuremap-grid canvas {
  width: 100%;
  height: auto;
  aspect-ratio: 1 / 1;
  image-rendering: pixelated;
  border-radius: 4px;
  border: 1px solid var(--panel-border);
}

.featuremap-grid .featuremap-caption {
  font-size: 0.65rem;
  color: var(--text-dim);
}

.conv-calc {
  margin: 8px 0;
}

.conv-calc-grids {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.conv-calc-label {
  font-size: 0.7rem;
  color: var(--text-dim);
  text-align: center;
  margin-bottom: 2px;
}

.conv-calc-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2px;
  background: var(--panel-border);
  padding: 2px;
  border-radius: 4px;
}

.conv-calc-grid > div {
  background: var(--bg);
  padding: 4px 6px;
  font-size: 0.72rem;
  text-align: center;
  font-variant-numeric: tabular-nums;
  min-width: 2.6em;
  color: var(--text);
}

.conv-calc-op {
  font-size: 1.3rem;
  color: var(--text-dim);
}

.conv-calc-sum {
  margin-top: 10px;
  font-size: 0.9rem;
  color: var(--text);
  font-variant-numeric: tabular-nums;
}

.duel-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 12px 0;
}

.duel-column {
  border: 1px solid var(--panel-border);
  border-radius: 8px;
  padding: 12px;
}

.duel-column h3 {
  margin-top: 0;
  font-size: 0.95rem;
  color: var(--text-dim);
}

.matrix-editor {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 6px;
  background: var(--panel-border);
  padding: 6px;
  border-radius: 6px;
  width: 140px;
}

.matrix-editor label {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  font-size: 0.65rem;
  color: var(--text-dim);
}

.matrix-editor input[type="range"] {
  width: 100%;
}

.disclaimer {
  margin: 14px 0;
  padding: 12px 14px;
  border: 1px solid var(--accent);
  border-radius: 8px;
  background: rgba(255, 209, 102, 0.08);
  font-size: 0.85rem;
  color: var(--text);
}

.token-btn {
  padding: 4px 10px;
  font-size: 0.8rem;
}

.token-btn.selected {
  background: var(--accent);
  color: #1a1400;
  border-color: var(--accent);
  font-weight: bold;
}

@media (max-width: 600px) {
  .duel-columns {
    grid-template-columns: 1fr;
  }

  .museum-header h1 {
    font-size: 0.95rem;
  }
  .exhibit {
    padding: 16px 10px 48px;
  }
}

/* データセットの帰属表示(MNIST等)。2026-08-29追加、法務監査§2-4 */
.dataset-credit {
  margin: 26px 0 8px;
  padding-top: 14px;
  border-top: 1px solid rgba(128, 128, 128, .28);
  font-size: .82rem;
  line-height: 1.8;
  opacity: .78;
}
.dataset-credit a:focus-visible { outline: 2px solid currentColor; outline-offset: 2px; }

/* little-bit: focus-visible(2026-08-29追加)
   キーボード操作でいまどこにいるかが見えないアプリが24中20あった
   (サイト品質棚卸し B-5)。:where() で詳細度0にしてあるので、
   個別に focus スタイルを持つ要素はそちらが勝つ。
   色はサイト共通のアクセント(#e8825a)。明るい地でも暗い地でも見える。 */
:where(a, button, input, select, textarea, summary, [tabindex]):focus-visible {
  outline: 2px solid #e8825a;
  outline-offset: 2px;
}