/* ── Exercise widget ────────────────────────────────────────────────────── */

.ex-section-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: #1a3a6b;
  margin: 2.5rem 0 0.8rem;
  padding-bottom: 0.35rem;
  border-bottom: 2px solid #1d87e4;
}

.ex-container { margin: 0.5rem 0 2rem; }

.ex-card {
  background: #fff;
  border: 1px solid #dee2e6;
  border-radius: 8px;
  padding: 1.4rem 1.5rem;
  margin: 1rem 0;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
}

.ex-header { margin-bottom: 0.75rem; }

.ex-num {
  font-weight: 700;
  font-size: 0.95rem;
  color: #1a3a6b;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.ex-question {
  font-size: 1rem;
  line-height: 1.65;
  padding: 0.75rem 1rem;
  background: #f4f7fb;
  border-left: 4px solid #1d87e4;
  border-radius: 0 6px 6px 0;
  margin-bottom: 1rem;
}

.ex-img {
  max-width: 60%;
  height: auto;
  border-radius: 6px;
  border: 1px solid #dee2e6;
  margin: 0 0 1rem;
  display: block;
}

/* Multiple choice */
.ex-choices {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  margin-bottom: 0.3rem;
}

.ex-choice {
  text-align: left;
  padding: 0.6rem 1rem;
  border: 1px solid #ced4da;
  border-radius: 6px;
  background: #fafafa;
  cursor: pointer;
  font-size: 0.95rem;
  line-height: 1.45;
  transition: background 0.12s, border-color 0.12s;
}
.ex-choice:hover:not(:disabled) {
  background: #e8f0fe;
  border-color: #1d87e4;
}
.ex-choice.ex-correct {
  background: #d4edda;
  border-color: #28a745;
  color: #155724;
  font-weight: 600;
}
.ex-choice.ex-incorrect {
  background: #f8d7da;
  border-color: #dc3545;
  color: #721c24;
}
.ex-choice:disabled { cursor: default; }

/* Field input */
.ex-fields {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  margin-bottom: 0.3rem;
}
.ex-field-row {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-wrap: wrap;
}
.ex-field-label {
  font-size: 0.9rem;
  color: #555;
  min-width: 100px;
}
.ex-field-input {
  border: 1px solid #ced4da;
  border-radius: 5px;
  padding: 0.38rem 0.7rem;
  font-size: 0.95rem;
  width: 130px;
  transition: border-color 0.12s;
}
.ex-field-input:focus { outline: none; border-color: #1d87e4; }
.ex-field-input.ex-field-ok  { border-color: #28a745; background: #d4edda; }
.ex-field-input.ex-field-wrong { border-color: #dc3545; background: #f8d7da; }
.ex-fmt { font-style: italic; color: #888; font-size: 0.85rem; }

/* Buttons */
.ex-submit,
.ex-retry-btn {
  display: inline-block;
  padding: 0.45rem 1.15rem;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.9rem;
  font-weight: 500;
  transition: background 0.12s;
}
.ex-submit { background: #1d87e4; color: #fff; margin-top: 0.3rem; }
.ex-submit:hover:not(:disabled) { background: #1565c0; }
.ex-submit:disabled { background: #adb5bd; cursor: default; }
.ex-retry-btn { background: #6c757d; color: #fff; margin-top: 0.3rem; }
.ex-retry-btn:hover { background: #495057; }

/* Feedback */
.ex-feedback { margin-top: 0.9rem; }
.ex-fb-box {
  padding: 0.8rem 1.1rem;
  border-radius: 6px;
  font-size: 0.95rem;
  line-height: 1.55;
}
.ex-fb-ok  { background: #d4edda; border: 1px solid #c3e6cb; color: #155724; }
.ex-fb-err { background: #fff3cd; border: 1px solid #ffc107; color: #664d03; }

.ex-retry { margin-top: 0.4rem; }

/* ── Bookdown theme tweaks ──────────────────────────────────────────────── */

/* Better chapter separator */
.chapter + .chapter { border-top: 1px solid #e9ecef; padding-top: 1rem; }

/* ── Dölj höger sidopanel ───────────────────────────────────────────────── */
.sidebar-chapter {
  display: none !important;
}

/* Expandera innehållskolumnen till resten av bredden */
@media (min-width: 992px) {
  main#content {
    flex: 0 0 75% !important;
    max-width: 75% !important;
  }
}
@media (min-width: 768px) and (max-width: 991.98px) {
  main#content {
    flex: 0 0 100% !important;
    max-width: 100% !important;
  }
}

/* ── Navigeringsmenyer: ljus bakgrundsfärg ──────────────────────────────── */

/* Vänster sidopanel */
.sidebar {
  background-color: #ffffff !important;
}

/* Kurs 1 — ljusgrön */
.sidebar li.nav-kurs1,
.sidebar li.nav-kurs1 a,
.sidebar li.nav-kurs1.book-part {
  background-color: #e8f5e9 !important;
}

/* Kurs 2 — ljusgul/beige */
.sidebar li.nav-kurs2,
.sidebar li.nav-kurs2 a,
.sidebar li.nav-kurs2.book-part {
  background-color: #fff8e1 !important;
}

/* ── Kollapsbar kapitel-TOC ─────────────────────────────────────────────── */

/* Avsnitts-underlista (dold som standard, JS visar/döljer) */
.toc-sections {
  list-style: none;
  padding: 0 0 0.25rem 0.9rem;
  margin: 0;
  border-left: 2px solid #c5d5e8;
}
.toc-sections li a {
  font-size: 0.875rem !important;
  padding-top: 0.18rem !important;
  padding-bottom: 0.18rem !important;
  opacity: 0.9;
}

/* Pil-indikator på kapitelrubrik med underpunkter */
.toc-chapter-toggle {
  display: flex !important;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
}
.toc-toggle-btn {
  font-size: 0.7em;
  opacity: 0.55;
  margin-left: 0.4rem;
  flex-shrink: 0;
  pointer-events: auto;
  cursor: pointer;
}

/* Dölj rubriknumrering i innehållet (H3/H4) men behåll den i menyn */
.section.level3 .header-section-number,
.section.level4 .header-section-number {
  display: none;
}

/* ── Bilder i innehållet ────────────────────────────────────────────────── */
.section img {
  max-width: 55%;
  height: auto;
  display: block;
  margin: 0.5rem 0;
}

/* ── Figurtexter (Förklaring:) ──────────────────────────────────────────── */
.fig-caption {
  font-size: 0.85rem;
  line-height: 1.45;
  color: #555;
  margin-top: 0.3rem;
  margin-bottom: 1.4rem;
}

/* ── Nästa avsnitt-länk längst ner på varje avsnittssida ───────────────── */
.next-section-link {
  margin-top: 2rem;
  padding: 0.8rem 1.2rem;
  background: #f4f7fb;
  border-left: 4px solid #1d87e4;
  border-radius: 0 6px 6px 0;
}
.next-section-link a {
  color: #1a3a6b;
  font-size: 1rem;
  text-decoration: none;
}
.next-section-link a:hover {
  text-decoration: underline;
}