/* Recitation overrides
 * Loaded AFTER Bootstrap and AFTER beamer-theme.css.
 * Goal: keep Bootstrap accordion functionality (JS toggling) but visually
 * match the Crane theme used in 101 lectures.
 */

/* Drop Bootstrap's container max-width — let beamer .frame handle layout */
body { max-width: none; }

/* Top-of-page nav strip (back to index) */
.recitation-nav {
  max-width: var(--frame-max-width, 960px);
  margin: 0.75rem auto 0;
  padding: 0 0.5rem;
  font-size: 0.9rem;
}
.recitation-nav a {
  color: var(--crane-blue);
  text-decoration: none;
}
.recitation-nav a:hover { text-decoration: underline; }

/* Solution accordion — Crane palette overrides on Bootstrap classes */
.frame-content .accordion {
  margin-top: 1.5rem;
  --bs-accordion-border-color: var(--crane-amber);
  --bs-accordion-active-bg: var(--crane-amber);
  --bs-accordion-active-color: #000;
  --bs-accordion-btn-focus-border-color: var(--crane-amber);
  --bs-accordion-btn-focus-box-shadow: 0 0 0 0.18rem rgba(249,168,37,0.30);
  --bs-accordion-btn-bg: #fff8e1;
  --bs-accordion-btn-color: #000;
  --bs-accordion-bg: #ffffff;
}

.frame-content .accordion-button {
  font-weight: 600;
}

.frame-content .accordion-button:not(.collapsed) {
  background: var(--crane-amber);
  color: #000;
  box-shadow: none;
}

.frame-content .accordion-body {
  background: #fff8e1;
}

/* Figures inside frames */
.frame-content figure {
  text-align: center;
  margin: 1rem auto;
}
.frame-content figure img {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--frame-border, #e0e0e0);
  border-radius: 4px;
}
.frame-content figcaption {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-top: 0.4rem;
}

/* TOC list (used on index.html) — matches lecture index style */
.toc-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
}
.toc-list li { margin: 0.6rem 0; }
.toc-list li::before { content: none; }
.toc-list a {
  display: block;
  padding: 0.85rem 1.25rem;
  background: #fff8e1;
  border-left: 4px solid var(--crane-amber);
  color: var(--text-primary);
  text-decoration: none;
  font-size: 1.05rem;
  transition: background 0.2s, border-color 0.2s;
}
.toc-list a:hover {
  background: var(--crane-amber-light);
  border-left-color: var(--crane-amber-dark);
}
.toc-list .week-num {
  display: inline-block;
  min-width: 4.5em;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}
.toc-list .badge-sol {
  font-size: 0.7rem;
  margin-left: 0.5rem;
  padding: 0.15rem 0.45rem;
  border-radius: 0.25rem;
  background: #859900;
  color: #fff;
  vertical-align: middle;
  letter-spacing: 0.02em;
}

/* Problem-statement spacing inside .frame-content */
.frame-content .problem-statement > :first-child { margin-top: 0; }
.frame-content .problem-statement ol,
.frame-content .problem-statement ul { margin-left: 0; }

/* "Part (a)" subtitle inside solutions */
.part-header {
  font-weight: 600;
  margin-top: 1rem;
  margin-bottom: 0.4rem;
  color: var(--crane-amber-dark);
}

/* Tables inside problem statements (match Bootstrap defaults but tighter) */
.frame-content .table {
  width: auto;
  margin: 0.5rem 0 1rem;
}