/* ==========================================================================
   EvoluAI — aula (etapa 1 das fases com laboratório): teoria, mini-demos e
   o Python que a pessoa vai escrever na etapa 2. Ver js/games/lesson.js.
   ========================================================================== */

.ls { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 16px; align-items: start; max-width: 1180px; margin: 0 auto; }
@media (max-width: 920px) { .ls { grid-template-columns: 1fr; } }

/* ---------- índice lateral ---------- */

.ls-nav { position: sticky; top: 76px; display: flex; flex-direction: column; gap: 12px; }
@media (max-width: 920px) { .ls-nav { position: static; } }
.ls-nav-title { font: 500 18px/1.25 var(--pixel); letter-spacing: 0; }
.ls-progress { display: flex; align-items: center; gap: 10px; font-size: 11.5px; color: var(--muted); }
.ls-meter { flex: 1; height: 8px; border: 2px solid var(--line-2); background: var(--bg); }
.ls-meter i { display: block; height: 100%; width: 0; background: var(--accent); transition: width 0.3s var(--ease); }

.ls-toc { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }
.ls-toc button {
  display: flex; align-items: center; gap: 10px; width: 100%;
  padding: 8px 10px; border: 2px solid transparent;
  font-size: 13.5px; line-height: 1.3; text-align: left; color: var(--text-2);
}
.ls-toc button:hover { background: var(--surface-2); border-color: var(--line-2); }
.ls-toc button.cur { background: var(--accent-soft); border-color: var(--accent); color: var(--text); }
.ls-toc button.ok { color: var(--text); }
.ls-toc button .icon { margin-left: auto; width: 12px; height: 12px; color: var(--good); flex: none; }
.ls-no { flex: none; display: inline-flex; width: 22px; font-size: 11px; color: var(--faint); }
.ls-no .icon { margin: 0; color: var(--accent); }
.ls-toc button.cur .ls-no { color: var(--accent); }
.ls-toc-recap { margin-top: 4px; border-top: 2px dashed var(--line) !important; }
.ls-code-btn { margin-top: 4px; }
.ls-nav-note { font-size: 12px; line-height: 1.5; color: var(--muted); }
@media (max-width: 920px) {
  .ls-toc { flex-direction: row; flex-wrap: wrap; }
  .ls-toc li { flex: 1 1 140px; }
}

/* ---------- conteúdo ---------- */

.ls-main { display: flex; flex-direction: column; gap: 18px; padding: 26px 28px; min-width: 0; outline: none; }
@media (max-width: 640px) { .ls-main { padding: 18px 16px; } }
.ls-head .eyebrow span { color: var(--accent); }
.ls-head h2 { margin-top: 8px; font: 500 26px/1.2 var(--pixel); letter-spacing: 0; }
.ls-text { display: flex; flex-direction: column; gap: 12px; font-size: 15.5px; line-height: 1.65; color: var(--text-2); max-width: 72ch; }
.ls-text b, .ls-text strong { color: var(--text); font-weight: 500; }
.ls-text code, .ls-fns span code, .ls-hint code, .ls-goal code { font: 400 0.9em/1 var(--mono); color: var(--accent); background: var(--bg-2); padding: 1px 5px; border: 1px solid var(--line); }
.ls-text ul, .ls-text ol { margin: 0; padding-left: 22px; display: flex; flex-direction: column; gap: 6px; }
.ls-text .ls-aside { padding: 12px 14px; border-left: 3px solid var(--info); background: var(--info-soft); font-size: 14px; }
.ls-formula { font-size: 14px; line-height: 1.8; max-width: 72ch; }
.ls-formula small { display: block; font-size: 12px; color: var(--muted); }

/* ---------- demo ---------- */

.ls-demo { display: flex; flex-direction: column; gap: 10px; padding: 16px; border: 2px solid var(--line-2); background: var(--bg-2); }
.ls-demo-head .sg-label { display: inline-flex; align-items: center; gap: 8px; color: var(--accent); }
.ls-demo-head .icon { width: 13px; height: 13px; }
.ls-goal-note { display: block; margin-top: 2px; color: var(--good); }
.ls-goal-note:empty { display: none; }
.ls-hint { display: flex; gap: 10px; align-items: flex-start; padding: 10px 12px; background: var(--info-soft); font-size: 13px; line-height: 1.5; color: var(--text-2); }
.ls-hint .icon { color: var(--info); margin-top: 2px; flex: none; }
.ls-demo-body { display: flex; flex-direction: column; gap: 12px; }

.ls-canvas { display: block; width: 100%; height: 260px; border: 2px solid var(--line-2); background: var(--ink, #0c0b10); touch-action: none; }
.ls-canvas.tall { height: 320px; }
.ls-canvas.short { height: 200px; }
@media (max-width: 640px) { .ls-canvas, .ls-canvas.tall { height: 230px; } }
.ls-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; align-items: start; }
.ls-ctrls { display: flex; flex-direction: column; gap: 10px; }
.ls-slider { grid-template-columns: 64px minmax(0, 1fr) 64px; }
.ls-choices { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; }
.ls-btns { display: flex; flex-wrap: wrap; gap: 8px; }
.ls-readout { display: flex; flex-wrap: wrap; gap: 6px 18px; font: 500 12.5px/1.5 var(--mono); color: var(--muted); }
.ls-readout b { color: var(--text); font-weight: 500; }
.ls-readout b.good { color: var(--good); }
.ls-readout b.bad { color: var(--bad); }
.ls-readout b.acc { color: var(--accent); }
.ls-note { font-size: 13px; line-height: 1.5; color: var(--muted); }
.ls-note b { color: var(--text-2); font-weight: 500; }

/* tabelinhas das demos (portas lógicas, matriz de confusão) */
.ls-table { border-collapse: collapse; font: 400 13px/1 var(--mono); }
.ls-table th, .ls-table td { padding: 7px 12px; border: 2px solid var(--line); text-align: center; }
.ls-table th { font-weight: 500; color: var(--muted); background: var(--surface); }
.ls-table td.ok { color: var(--good); }
.ls-table td.no { color: var(--bad); }
.ls-table td.on { background: var(--accent-soft); color: var(--text); }
.ls-bits { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.ls-bit { min-width: 40px; height: 34px; padding: 0 10px; border: 2px solid var(--line-2); font: 500 14px/1 var(--pixel); color: var(--text-2); background: var(--bg); }
.ls-bit[aria-pressed='true'] { background: var(--accent); color: var(--accent-ink); border-color: #000; }
.ls-select { height: 34px; padding: 0 8px; border: 2px solid var(--line-2); background: var(--bg); color: var(--text); font: 500 13px/1 var(--pixel); }

/* barras (probabilidades, gradiente por camada) */
.ls-bars { display: flex; flex-direction: column; gap: 6px; }
.ls-bar { display: grid; grid-template-columns: 92px minmax(0, 1fr) 64px; gap: 10px; align-items: center; font: 400 12.5px/1 var(--mono); color: var(--text-2); }
.ls-bar span:last-child { text-align: right; color: var(--text); font-variant-numeric: tabular-nums; }
.ls-bar-track { height: 14px; border: 2px solid var(--line-2); background: var(--bg); }
.ls-bar-track i { display: block; height: 100%; background: var(--accent); transition: width 0.2s var(--ease); }
.ls-bar-track i.dim { background: var(--faint); }
.ls-bar-track i.bad { background: var(--bad); }

/* ---------- código ---------- */

.ls-code { display: flex; flex-direction: column; gap: 8px; }
.ls-code-head { display: flex; flex-wrap: wrap; align-items: baseline; justify-content: space-between; gap: 6px 14px; }
.ls-code-note { font-size: 12.5px; color: var(--muted); }
.ls-pre { margin: 0; padding: 14px 16px; overflow-x: auto; border: 2px solid var(--line-2); background: #0a0a0f; font: 400 13px/1.6 var(--mono); color: #d4d4d4; }
.py-k { color: #c586c0; }
.py-s { color: #ce9178; }
.py-n { color: #b5cea8; }
.py-c { color: #6a9955; }
.py-m { color: #4ec9b0; }

/* ---------- navegação ---------- */

.ls-foot { display: flex; justify-content: space-between; gap: 10px; padding-top: 16px; border-top: 2px dashed var(--line); }

/* ---------- resumo ---------- */

.ls-fns { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.ls-fns li { display: grid; grid-template-columns: minmax(0, 340px) minmax(0, 1fr); gap: 6px 16px; align-items: baseline; padding: 12px 14px; border: 2px solid var(--line); background: var(--bg-2); font-size: 14px; line-height: 1.55; color: var(--text-2); }
@media (max-width: 720px) { .ls-fns li { grid-template-columns: 1fr; } }
.ls-sig { font: 400 13px/1.5 var(--mono); color: #d4d4d4; white-space: pre-wrap; }
.ls-cta { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 14px 20px; padding: 18px 20px; border: 2px solid var(--accent); background: var(--accent-soft); }
.ls-cta > div { display: flex; flex-direction: column; gap: 4px; max-width: 60ch; }
.ls-cta b { font: 500 17px/1.2 var(--pixel); color: var(--text); }
.ls-cta span { font-size: 13.5px; line-height: 1.5; color: var(--text-2); }

.res-next { font-size: 13.5px; line-height: 1.55; color: var(--text-2); }
.res-next b { color: var(--text); font-weight: 500; }
.apl-lesson { margin-top: 8px; }
.ls-cta-btns { display: flex; flex-wrap: wrap; gap: 8px; }

/* gráficos limpos (js/chart.js): resolução real, sem o "pixelated" que o pixel.css aplica a alguns canvases */
canvas.chart-canvas { image-rendering: auto; }