/* Week 7 text-meaning components. All colors come from tokens.css. */

.metric-grid {
  display: grid; grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 10px; margin-top: 10px;
}
.metric {
  border: 1px solid var(--grid); border-radius: 8px; padding: 9px 10px;
  background: var(--page);
}
.metric .k { color: var(--text-muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em; }
.metric .v { color: var(--text-primary); font-size: 18px; font-weight: 600; margin-top: 2px; }

.formula {
  padding: 9px 11px; border: 1px solid var(--grid); border-radius: 8px;
  background: var(--page); color: var(--text-secondary);
  font: 12.5px/1.5 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}

.simbar { height: 12px; background: var(--grid); border-radius: 8px; overflow: hidden; }
.simbar > span { display: block; height: 100%; background: var(--series-1); }

.scatter-wrap { position: relative; min-height: 410px; }
svg.scatter { width: 100%; height: 410px; display: block; }
.scatter-point { fill: var(--series-1); opacity: 0.62; cursor: pointer; }
.scatter-point.shared { fill: var(--text-muted); }
.scatter-point.other { fill: var(--series-2); }
.scatter-point.active { opacity: 1; stroke: var(--text-primary); stroke-width: 1.4; }
.scatter-label { fill: var(--text-secondary); font-size: 11px; pointer-events: none; }
.scatter-label.active { fill: var(--text-primary); font-weight: 600; }
.tooltip {
  position: absolute; pointer-events: none; display: none;
  max-width: 220px; padding: 7px 9px; border: 1px solid var(--baseline);
  border-radius: 7px; background: var(--surface-1); color: var(--text-primary);
  font-size: 12px; line-height: 1.4; box-shadow: 0 4px 18px var(--border);
}

.topic-stack { display: flex; height: 30px; border-radius: 7px; overflow: hidden; border: 1px solid var(--grid); }
.topic-stack span { height: 100%; display: flex; align-items: center; justify-content: center; font-size: 11px; font-weight: 600; }
.topic-1 { background: var(--series-1-wash); color: var(--series-1); }
.topic-2 { background: var(--series-2-wash); color: var(--series-2); }
.topic-3 { background: var(--grid); color: var(--text-secondary); }
.topic-word { display: grid; grid-template-columns: 90px 1fr 44px; gap: 8px; align-items: center; margin: 7px 0; }
.topic-word .track { height: 9px; background: var(--grid); border-radius: 6px; overflow: hidden; }
.topic-word .track span { display: block; height: 100%; background: var(--series-1); }

.matrix-heat td { position: relative; }
.matrix-heat td .cell-bg {
  position: absolute; inset: 2px; border-radius: 4px; background: var(--series-1-wash); pointer-events: none;
}
.matrix-heat td .cell-value { position: relative; z-index: 1; }
.matrix-heat td.selected { outline: 2px solid var(--accent); outline-offset: -2px; }

.window-sentence { display: flex; gap: 6px; flex-wrap: wrap; margin: 12px 0; }
.window-word {
  padding: 5px 8px; border: 1px solid var(--grid); border-radius: 6px;
  background: var(--page); color: var(--text-secondary);
  font: 12.5px/1.3 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.window-word.target { border-color: var(--accent); background: var(--accent-wash); color: var(--text-primary); font-weight: 600; }
.window-word.context { border-color: var(--series-1); background: var(--series-1-wash); color: var(--text-primary); }
.window-word.negative { border-color: var(--series-2); background: var(--series-2-wash); }
.training-list { display: grid; gap: 6px; }
.training-item {
  display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 8px;
  border-bottom: 1px solid var(--grid); padding: 5px 0;
  font: 12.5px/1.35 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
.training-item .left { text-align: right; color: var(--text-secondary); }
.training-item .arrow { color: var(--text-muted); }
.training-item .right { color: var(--text-secondary); }

svg.embedding { width: 100%; height: 420px; display: block; }
.embed-point { fill: var(--series-1); }
.embed-point.alt { fill: var(--series-2); }
.embed-point.result { fill: var(--text-primary); }
.embed-label { fill: var(--text-secondary); font-size: 12px; }
.embed-vector { stroke: var(--text-muted); stroke-width: 2; fill: none; }
.embed-vector.result { stroke: var(--text-primary); stroke-width: 2.5; }
.embed-guide { stroke: var(--grid); stroke-width: 1; stroke-dasharray: 4 4; }

@media (max-width: 640px) {
  .topic-word { grid-template-columns: 78px 1fr 40px; }
}

/* Week 6 V8: keep explanation panels below their main visualization. */
.topic-mixture-page .text-panels,
.ppmi-page .text-panels {
  grid-template-columns: 1fr;
  gap: 12px;
}
.topic-mixture-page .text-panels .panel + .panel,
.ppmi-page .text-panels .panel + .panel {
  margin-top: 0;
}
.topic-mixture-page #topic-words {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  column-gap: 24px;
}
.ppmi-page .matrix-wrap {
  overflow-x: auto;
}
.ppmi-page .metric-grid {
  grid-template-columns: repeat(2, minmax(130px, 1fr));
}
@media (max-width: 640px) {
  .topic-mixture-page #topic-words {
    grid-template-columns: 1fr;
  }
  .ppmi-page .metric-grid {
    grid-template-columns: 1fr;
  }
}

/* Week 6: small teaching view for how context windows become word vectors. */
.word-context-page .panel { min-width: 0; }
.word-context-page .matrix-wrap { overflow-x: auto; }
.word-context-page .matrix tr.active td {
  background: var(--series-1-wash);
  color: var(--text-primary);
  font-weight: 600;
}
.word-context-bottom {
  display: grid;
  grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr);
  gap: 18px;
  margin-top: 14px;
}
.word-context-page .context-list {
  max-height: 190px;
  overflow-y: auto;
}
@media (max-width: 640px) {
  .word-context-bottom { grid-template-columns: 1fr; }
}