/* THE CONTROL ROOM — lesson panel, callouts, quiz and challenge styles.
   Grows with the curriculum framework phase. */

.lesson-body {
  /* Flex column so the step nav can pin to the panel's bottom edge:
     margin-top:auto pushes it down when content is short; sticky keeps it
     in view when content scrolls. */
  display: flex;
  flex-direction: column;
  min-height: 100%;
  padding: 14px 18px 0;
  font-size: calc(14.5px * var(--fs, 1));
}
.lesson-body h2 { font-size: calc(18px * var(--fs, 1)); margin: 4px 0 10px; }
.lesson-body p { margin: 0 0 10px; }
.lesson-body b { color: var(--ink); }

.callout {
  border-left: 3px solid var(--hairline);
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  background: var(--bg-raised);
  padding: 8px 12px;
  margin: 10px 0;
  font-size: calc(13.5px * var(--fs, 1));
}
.callout.observe { border-left-color: var(--annun-amber); }
.callout.observe::before { content: "OBSERVE"; display: block; font-size: calc(10.5px * var(--fs, 1)); letter-spacing: 0.14em; color: var(--annun-amber); margin-bottom: 3px; }
.callout.try { border-left-color: var(--phosphor); }
.callout.try::before { content: "TRY IT"; display: block; font-size: calc(10.5px * var(--fs, 1)); letter-spacing: 0.14em; color: var(--phosphor); margin-bottom: 3px; }

/* Non-blocking live task gate */
.task-gate {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px dashed var(--hairline);
  border-radius: var(--radius-sm);
  padding: 8px 12px;
  margin: 10px 0;
  font-size: calc(13.5px * var(--fs, 1));
  color: var(--ink-dim);
}
.task-gate.met { border-color: var(--good); color: var(--ink); }
.task-gate .box { font-family: var(--mono); }
.task-gate.met .box { color: var(--good); }

/* Inline math (mathText.js output) */
.fm { font-family: Georgia, 'Times New Roman', serif; }
.fm i { font-style: italic; }
.fm-block { display: block; text-align: center; margin: 10px 0; font-size: 1.08em; }
.fm-frac { display: inline-flex; flex-direction: column; text-align: center; vertical-align: middle; margin: 0 2px; }
.fm-frac > .fm-num { border-bottom: 1px solid currentColor; padding: 0 3px; }
.fm-frac > .fm-den { padding: 0 3px; }
.fm-sqrt { display: inline-flex; align-items: stretch; }
.fm-sqrt-sym { align-self: flex-start; }
.fm-sqrt-body { border-top: 1px solid currentColor; padding: 0 2px; }
.fm-int { font-size: 1.25em; vertical-align: -0.1em; }
.fm sub, .fm sup { font-style: normal; line-height: 0; }

/* Glossary terms */
dfn[data-term] {
  font-style: normal;
  border-bottom: 1px dotted var(--steel);
  cursor: help;
}
.gloss-card {
  position: absolute;
  z-index: 70;
  max-width: 340px;
  background: var(--bg-raised);
  border: 1px solid var(--steel);
  border-radius: var(--radius-sm);
  padding: 10px 12px;
  font-size: calc(13px * var(--fs, 1));
  box-shadow: 0 8px 24px #000c;
}
.gloss-card .gloss-term { color: var(--phosphor); font-weight: 600; margin-bottom: 4px; }
.gloss-card .gloss-long { margin-top: 6px; color: var(--ink-dim); }
.gloss-card .gloss-unit { color: var(--ink-faint); font-family: var(--mono); font-size: 0.9em; }

/* Glossary modal */
.gloss-search {
  width: 100%;
  margin: 8px 0 12px;
  background: var(--bg-inset);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-sm);
  color: var(--ink);
  padding: 7px 10px;
  font-size: calc(14px * var(--fs, 1));
}
.gloss-list { display: flex; flex-direction: column; gap: 10px; }
.gloss-entry { border-left: 2px solid var(--hairline); padding-left: 10px; }
.gloss-entry.seen { border-left-color: var(--phosphor); }
.gloss-entry .gloss-term { color: var(--ink); font-weight: 600; }
.gloss-entry.seen .gloss-term { color: var(--phosphor); }
.gloss-empty { color: var(--ink-faint); }
.settings-note { color: var(--ink-dim); font-size: calc(13px * var(--fs, 1)); }

/* --- Course map --------------------------------------------------------------- */

.cmap-body { min-width: min(640px, 86vw); }
.cmap-head { display: flex; align-items: center; gap: 14px; margin-bottom: 12px; }
.cmap-head h2 { margin: 0; }
.cmap-unit {
  border: 1px solid var(--hairline-soft);
  border-radius: var(--radius);
  background: var(--bg-inset);
  padding: 10px 14px;
  margin-bottom: 10px;
}
.cmap-unit-head { display: flex; align-items: baseline; gap: 10px; }
.cmap-unit-num { font-family: var(--mono); font-size: calc(10.5px * var(--fs, 1)); letter-spacing: 0.14em; color: var(--annun-amber); }
.cmap-unit-title { font-weight: 600; }
.cmap-unit-blurb { color: var(--ink-dim); font-size: calc(12.5px * var(--fs, 1)); margin: 2px 0 6px; }
.cmap-license {
  margin-left: auto;
  font-family: var(--mono);
  font-size: calc(9.5px * var(--fs, 1));
  letter-spacing: 0.1em;
  color: var(--annun-amber);
  border: 1px solid var(--annun-amber);
  border-radius: 3px;
  padding: 1px 6px;
}
.cmap-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  font-size: calc(13.5px * var(--fs, 1));
  cursor: pointer;
}
.cmap-item:hover { background: var(--bg-raised); }
.cmap-item.locked { color: var(--locked); cursor: default; }
.cmap-item.locked:hover { background: transparent; }
.cmap-item.done .cmap-title { color: var(--ink-dim); }
.cmap-item .cmap-title { flex: 1 1 auto; }
.cmap-item .cmap-done { color: var(--good); }

/* --- Unit splash --------------------------------------------------------------- */

.splash-body { text-align: center; min-width: min(460px, 80vw); }
.splash-eyebrow {
  font-family: var(--mono);
  font-size: calc(11px * var(--fs, 1));
  letter-spacing: 0.3em;
  color: var(--annun-amber);
}
.splash-title { margin: 6px 0 12px; font-size: calc(26px * var(--fs, 1)); }
.splash-intro { color: var(--ink-dim); max-width: 420px; margin: 12px auto 0; text-align: left; }

/* First-visit welcome: two entry paths (full course / case studies). */
.welcome-choices {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 16px;
}
@media (max-width: 560px) { .welcome-choices { grid-template-columns: 1fr; } }
.welcome-choice {
  text-align: left;
  padding: 12px 14px;
  white-space: normal;
  height: auto;
}
.wc-title { font-size: calc(14px * var(--fs, 1)); color: var(--phosphor); margin-bottom: 6px; }
.wc-desc { font-size: calc(11.5px * var(--fs, 1)); color: var(--ink-dim); line-height: 1.45; }

/* --- Certificate --------------------------------------------------------------- */

.cert-print-area { margin-top: 12px; }
.cert-svg { width: 100%; height: auto; border: 1px solid var(--hairline); border-radius: 4px; }
@media print {
  body > *:not(#modalRoot) { display: none !important; }
  #modalRoot .modal-scrim { position: static; background: none; backdrop-filter: none; display: block; }
  #modalRoot .modal-card { max-width: none; max-height: none; border: none; box-shadow: none; padding: 0; }
  #modalRoot .modal-card > div > *:not(.cert-print-area) { display: none !important; }
  .cert-svg { border: none; }
  @page { size: landscape; margin: 0.6cm; }
}

/* --- Reactor widgets ------------------------------------------------------------ */

.rw-title {
  font-family: var(--mono);
  font-size: calc(10px * var(--fs, 1));
  letter-spacing: 0.18em;
  color: var(--ink-dim);
  margin-bottom: 8px;
}
.rw-canvas { display: block; border-radius: 4px; }
.rw-table { width: 100%; border-collapse: collapse; font-size: calc(12.5px * var(--fs, 1)); margin-top: 8px; }
.rw-table th {
  text-align: left;
  font-size: calc(9.5px * var(--fs, 1));
  letter-spacing: 0.12em;
  color: var(--ink-faint);
  border-bottom: 1px solid var(--hairline);
  padding: 3px 8px 3px 0;
}
.rw-table td { padding: 3px 8px 3px 0; border-bottom: 1px solid var(--hairline-soft); }
.rw-table td.num { font-family: var(--mono); color: var(--phosphor); }
.rw-table td.rw-computed { color: var(--annun-amber); }
.rw-input { width: 76px; }
.rw-note { color: var(--ink-dim); font-size: calc(12.5px * var(--fs, 1)); margin: 6px 0; }
.settings-body h3 {
  margin: 16px 0 6px;
  font-size: calc(11.5px * var(--fs, 1));
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--ink-dim);
}