/* Estilos da demo interativa de Modelagem de Linguagem.
   Reusa as variáveis de tema de ../style.css. */

.demo-hero {
  padding: 3.2rem 1rem 1.6rem;
  text-align: center;
}
.demo-hero .course-desc { max-width: 760px; margin: 0 auto; }

.demo-section { padding: 1.6rem 1rem 1rem; }
.demo-section .container { max-width: 1060px; margin: 0 auto; }

.sub-title {
  color: var(--fg);
  font-size: 1.05rem;
  margin: 1.6rem 0 .4rem;
}

.demo-text {
  color: var(--fg);
  font-size: .95rem;
  line-height: 1.55;
  max-width: 860px;
  margin: .4rem 0 .9rem;
}
.demo-text.small { font-size: .84rem; color: var(--comment); }

.formula {
  font-family: "STIX Two Math", "Cambria Math", Georgia, serif;
  color: var(--cyan);
  white-space: nowrap;
}
.formula-lines { white-space: normal; line-height: 1.8; }
.demo-text .formula { font-size: .98em; }

.panel {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: .9rem 1rem 1rem;
  margin-bottom: 1.4rem;
}

.controls {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .6rem 1.1rem;
  margin-bottom: .7rem;
}

.tabs { display: inline-flex; border: 1px solid var(--line); border-radius: 6px; overflow: hidden; }
.tab {
  background: transparent;
  color: var(--comment);
  border: none;
  padding: .35rem .8rem;
  font-size: .85rem;
  cursor: pointer;
}
.tab.active { background: var(--purple); color: var(--bg); font-weight: 600; }

.btn-ctl {
  background: transparent;
  color: var(--fg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: .35rem .8rem;
  font-size: .85rem;
  cursor: pointer;
  transition: border-color .15s, color .15s;
}
.btn-ctl:hover:not(:disabled) { border-color: var(--cyan); color: var(--cyan); }
.btn-ctl:disabled { opacity: .45; cursor: not-allowed; }
.btn-ctl.primary { border-color: var(--purple); }

.slider-label {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  color: var(--comment);
  font-size: .85rem;
}
.slider-label input[type="range"] { accent-color: var(--purple); width: 140px; }
.slider-label select {
  background: var(--card);
  color: var(--fg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: .25rem .4rem;
  font-size: .85rem;
}
.slider-label.disabled { opacity: .4; }

.readout { color: var(--comment); font-size: .85rem; }

.canvas-row {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  align-items: stretch;
}
.canvas-row.hidden { display: none; }
.hidden { display: none !important; }

.canvas-box {
  flex: 1 1 280px;
  min-width: 240px;
  display: flex;
  flex-direction: column;
}
.canvas-box.wide { flex: 2 1 420px; }
.canvas-box.square { flex: 0 1 420px; }
.canvas-box canvas {
  width: 100%;
  height: 240px;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: 6px;
  touch-action: none;
}
.canvas-box.square canvas { height: 380px; }
.canvas-box.tall canvas { height: 340px; }

.canvas-caption {
  color: var(--comment);
  font-size: .78rem;
  margin: 0 0 .3rem;
}

/* ── Tira de tokens (contexto/geração) ──────────────────── */
.token-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .35rem;
  min-height: 2rem;
  margin-bottom: .6rem;
}
.token {
  display: inline-block;
  padding: .18rem .55rem;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--bg);
  color: var(--fg);
  font-size: .88rem;
  font-family: "STIX Two Math", "Cambria Math", Georgia, serif;
}
.token.generated { border-color: var(--purple); cursor: pointer; }
.token.generated:hover { border-color: var(--pink); color: var(--pink); }
.token.special { color: var(--comment); font-style: italic; }

/* ── Tabelas de métricas (perplexidade, BLEU, ROUGE) ────── */
.metric-table {
  border-collapse: collapse;
  font-size: .86rem;
  color: var(--fg);
  margin: .4rem 0 .6rem;
}
.metric-table th, .metric-table td {
  border: 1px solid var(--line);
  padding: .3rem .6rem;
  text-align: center;
}
.metric-table th { color: var(--comment); font-weight: 600; background: var(--bg); }
.metric-table td.left { text-align: left; }

.prob-cell { min-width: 90px; }
.prob-bar {
  display: inline-block;
  height: .65rem;
  border-radius: 3px;
  background: var(--purple);
  vertical-align: middle;
}

textarea.lm-input, input.lm-input {
  width: 100%;
  max-width: 640px;
  background: var(--bg);
  color: var(--fg);
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: .45rem .6rem;
  font-size: .9rem;
  font-family: inherit;
  resize: vertical;
}

/* ── Corpus e contagens do modelo ───────────────────────── */
.corpus-details {
  margin-top: .9rem;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--card);
}
.corpus-details summary {
  padding: .65rem .9rem;
  cursor: pointer;
  color: var(--fg);
  font-size: .9rem;
  font-weight: 600;
}
.corpus-details summary:hover { color: var(--cyan); }
.corpus-intro { padding: 0 1rem; }
.corpus-intro .demo-text { font-size: .9rem; }
.corpus-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  padding: .2rem 1rem 1rem;
}
.corpus-col { flex: 1 1 320px; min-width: 280px; }
.corpus-list {
  max-height: 340px;
  overflow-y: auto;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: var(--bg);
  padding: .5rem .7rem;
  font-size: .82rem;
  line-height: 1.65;
  color: var(--fg);
}

/* n-grams casados nas frases exibidas */
mark.match { background: transparent; color: var(--green); text-decoration: underline; font-weight: 600; }
mark.miss  { background: transparent; color: var(--pink); font-weight: 600; }

.ngram-chip {
  display: inline-block;
  padding: .08rem .4rem;
  margin: .1rem .15rem;
  border-radius: 5px;
  border: 1px solid var(--green);
  color: var(--green);
  font-size: .8rem;
}
.ngram-chip.clipped { border-color: var(--orange); color: var(--orange); text-decoration: line-through; }

@media (max-width: 700px) {
  .canvas-box.wide, .canvas-box.square { flex-basis: 100%; }
}