/* Source-traceable anatomy question bank.  Scoped so it can coexist with the
   legacy anatomy page styles while sharing its light/dark theme variables. */
.question-bank-shell {
  --qb-blue: #2f6fed;
  --qb-blue-soft: #eaf2ff;
  --qb-green: #1c9a67;
  --qb-red: #c9413d;
  --qb-ink: #243247;
  --qb-muted: #6b7a90;
  --qb-line: #d9e2ee;
  --qb-surface: rgba(255, 255, 255, 0.82);
  --qb-surface-strong: #ffffff;
  --qb-control: #f6f9fc;
  background: linear-gradient(135deg, rgba(255,255,255,.74), rgba(232,242,255,.78));
  border: 1px solid rgba(104, 140, 184, .28);
  border-radius: 16px;
  padding: 18px;
  box-shadow: 0 12px 34px rgba(65, 96, 135, .12);
  color: var(--qb-ink);
}

.anatomy-nav-group {
  margin: 8px 0 0;
  border-top: 1px solid rgba(185, 151, 73, .22);
  padding-top: 4px;
}
.anatomy-nav-group > summary {
  padding: 9px 16px;
  color: #756d60;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  gap: 6px;
}
.anatomy-nav-group > summary::-webkit-details-marker { display: none; }
.anatomy-nav-group > summary::before { display: none; }
.anatomy-nav-group > summary::after {
  content: '⌄';
  margin-left: auto;
  color: #9b8c6a;
  font-size: 13px;
  transition: transform .2s ease;
}
.anatomy-nav-group:not([open]) > summary::after { transform: rotate(-90deg); }
.anatomy-nav-group[data-group="tools"] {
  margin-top: 12px;
  border-top-color: rgba(185, 151, 73, .34);
}
.anatomy-nav-group[data-group="tools"] > summary {
  color: #b87408;
  padding-top: 10px;
  padding-bottom: 10px;
}
.anatomy-nav-group[data-group="tools"] .sub-links {
  padding: 0 0 5px;
  border-radius: 0 0 7px 7px;
  background: rgba(244, 215, 133, .10);
}
.anatomy-nav-group[data-group="tools"] .sub-links a {
  padding-top: 7px;
  padding-bottom: 7px;
}
body:not([data-theme="dark"]) .anatomy-nav-group[data-group="tools"] > summary { color: #b87408 !important; }
body:not([data-theme="dark"]) .anatomy-nav-group[data-group="tools"] .sub-links { background: rgba(244, 215, 133, .12); }
body:not([data-theme="dark"]) .anatomy-nav-group[data-group="tools"] > summary:hover { color: #8f5e08; }
body[data-theme="dark"] .anatomy-nav-group { border-top-color: rgba(141, 180, 218, .22); }
body[data-theme="dark"] .anatomy-nav-group > summary { color: #b9c9dc; }
body[data-theme="dark"] .anatomy-nav-group > summary::after { color: #9db8d2; }
body[data-theme="dark"] .anatomy-nav-group[data-group="tools"] { border-top-color: rgba(229, 184, 93, .35); }
body[data-theme="dark"] .anatomy-nav-group[data-group="tools"] > summary { color: #f8c471 !important; }
body[data-theme="dark"] .anatomy-nav-group[data-group="tools"] .sub-links { background: rgba(69, 55, 29, .24); }
body.matt-course-shell:not(.matt-shared-dark):not(.dark):not([data-theme="dark"]) #sidebar .anatomy-nav-group[data-group="tools"] > summary { color: #b87408 !important; }
body[data-theme="dark"].matt-course-shell #sidebar .anatomy-nav-group[data-group="tools"] > summary { color: #f8c471 !important; }

.anatomy-view-header {
  display: none;
  align-items: center;
  gap: .6rem;
  width: 100%;
  padding: .72rem 1.05rem;
  margin: 0 0 1.4rem;
  border: 1px solid rgba(79, 132, 190, .24);
  border-left: 4px solid #2f6fed;
  border-radius: 12px;
  background: linear-gradient(135deg, rgba(255,255,255,.82), rgba(230,242,255,.72));
  box-shadow: 0 10px 26px rgba(65, 96, 135, .10);
  color: #2f6fed;
  font: inherit;
  text-align: left;
  cursor: pointer;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}
.anatomy-view-header:hover {
  transform: translateX(-2px);
  box-shadow: 0 14px 30px rgba(65, 96, 135, .16);
  border-color: rgba(47,111,237,.46);
}
.anatomy-view-header-arrow { font-size: 1.2rem; line-height: 1; }
.anatomy-view-header-copy { display: flex; flex-direction: column; gap: 1px; }
.anatomy-view-header-copy strong { font-size: .94rem; }
.anatomy-view-header-copy small { color: #6b7a90; font-size: .72rem; }
.main.special-view .anatomy-view-header { display: flex; }
.main.special-view .content { max-width: 1080px; }

.main.special-view .utility-section,
.main.special-view .question-bank-section { margin-bottom: 28px; }

.utility-section > h2 { border-bottom-color: #c58b2b; }
[data-theme="dark"] .utility-section > h2 { border-bottom-color: #e5b85d; }

[data-theme="dark"] .anatomy-view-header {
  border-color: rgba(126, 185, 239, .28);
  border-left-color: #76bdf5;
  background: linear-gradient(135deg, rgba(28, 45, 64, .92), rgba(22, 34, 49, .94));
  box-shadow: 0 12px 30px rgba(0, 0, 0, .23);
  color: #9fd3ff;
}
[data-theme="dark"] .anatomy-view-header:hover { border-color: rgba(126,185,239,.56); }
[data-theme="dark"] .anatomy-view-header-copy small { color: #aab8ca; }

[data-theme="dark"] .question-bank-shell {
  --qb-blue: #8ab6ff;
  --qb-blue-soft: rgba(57, 112, 190, .22);
  --qb-green: #65d6a6;
  --qb-red: #ff8e89;
  --qb-ink: #e9f1fb;
  --qb-muted: #aab8ca;
  --qb-line: rgba(152, 183, 216, .25);
  --qb-surface: rgba(28, 40, 56, .84);
  --qb-surface-strong: #202f43;
  --qb-control: rgba(17, 29, 44, .86);
  background: linear-gradient(135deg, rgba(28, 45, 64, .90), rgba(18, 29, 44, .94));
  border-color: rgba(120, 166, 215, .32);
  box-shadow: 0 14px 38px rgba(0, 0, 0, .24);
}

.question-bank-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  margin-bottom: 14px;
}

.question-bank-head h3 {
  color: var(--qb-ink);
  font-size: 18px;
  margin: 0 0 4px;
}

.question-bank-head p {
  color: var(--qb-muted);
  font-size: 13px;
  line-height: 1.65;
  margin: 0;
}

.question-bank-integrity {
  flex: 0 0 auto;
  max-width: 360px;
  border: 1px solid rgba(231, 171, 53, .36);
  background: rgba(255, 249, 226, .78);
  color: #8b6511;
  border-radius: 10px;
  padding: 8px 10px;
  font-size: 12px;
  line-height: 1.55;
}

[data-theme="dark"] .question-bank-integrity {
  background: rgba(88, 68, 24, .34);
  color: #f4d27a;
  border-color: rgba(244, 210, 122, .35);
}

.question-bank-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 12px 0;
}

.question-bank-tabs button,
.question-bank-actions button,
.question-bank-filter select,
.question-bank-filter button {
  border: 1px solid var(--qb-line);
  border-radius: 9px;
  background: var(--qb-surface-strong);
  color: var(--qb-ink);
  font: inherit;
  cursor: pointer;
  transition: background .18s ease, border-color .18s ease, transform .18s ease;
}

.question-bank-tabs button {
  padding: 7px 12px;
  font-size: 13px;
}

.question-bank-tabs button:hover,
.question-bank-actions button:hover,
.question-bank-filter button:hover {
  border-color: var(--qb-blue);
  transform: translateY(-1px);
}

.question-bank-tabs button.is-active {
  background: var(--qb-blue);
  border-color: var(--qb-blue);
  color: #fff;
}

.question-bank-filter {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 9px;
  padding: 11px;
  border: 1px solid var(--qb-line);
  border-radius: 11px;
  background: var(--qb-surface);
  margin-bottom: 12px;
}

.question-bank-filter label {
  display: grid;
  gap: 4px;
  color: var(--qb-muted);
  font-size: 11px;
}

.question-bank-filter select,
.question-bank-filter button {
  min-height: 34px;
  padding: 5px 8px;
  font-size: 12px;
  outline: none;
}

.question-bank-filter select:focus {
  border-color: var(--qb-blue);
  box-shadow: 0 0 0 3px rgba(47, 111, 237, .14);
}

.question-bank-progress {
  color: var(--qb-muted);
  font-size: 12px;
  margin: 9px 2px;
}

.question-bank-card {
  background: var(--qb-surface-strong);
  border: 1px solid var(--qb-line);
  border-left: 4px solid var(--qb-blue);
  border-radius: 12px;
  padding: 16px;
  box-shadow: 0 7px 20px rgba(59, 88, 124, .08);
}

.question-bank-meta,
.question-bank-source {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 6px;
}

.question-bank-meta { margin-bottom: 10px; }
.question-bank-source { margin-top: 12px; color: var(--qb-muted); font-size: 11px; line-height: 1.5; }

.question-bank-pill {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 2px 8px;
  border-radius: 999px;
  background: var(--qb-blue-soft);
  color: var(--qb-blue);
  font-size: 11px;
  font-weight: 600;
}

.question-bank-pill.is-warning {
  background: rgba(232, 176, 48, .16);
  color: #997014;
}

[data-theme="dark"] .question-bank-pill.is-warning { color: #f4d27a; }

.question-bank-stem {
  color: var(--qb-ink);
  font-size: 16px;
  font-weight: 650;
  line-height: 1.8;
  margin-bottom: 12px;
}

.question-bank-options {
  display: grid;
  gap: 7px;
}

.question-bank-option {
  width: 100%;
  display: flex;
  align-items: flex-start;
  gap: 9px;
  text-align: left;
  border: 1px solid var(--qb-line);
  border-radius: 9px;
  background: var(--qb-control);
  color: var(--qb-ink);
  padding: 9px 10px;
  font: inherit;
  font-size: 13px;
  line-height: 1.6;
  cursor: pointer;
}

.question-bank-option:hover { border-color: var(--qb-blue); }
.question-bank-option.is-selected { border-color: var(--qb-blue); background: var(--qb-blue-soft); }
.question-bank-option.is-correct { border-color: var(--qb-green); background: rgba(28, 154, 103, .13); }
.question-bank-option.is-wrong { border-color: var(--qb-red); background: rgba(201, 65, 61, .12); }
.question-bank-option:disabled { cursor: default; opacity: 1; }

.question-bank-option b {
  flex: 0 0 23px;
  color: var(--qb-blue);
}

.question-bank-feedback {
  display: none;
  margin-top: 11px;
  padding: 10px 12px;
  border-radius: 9px;
  background: var(--qb-blue-soft);
  color: var(--qb-ink);
  font-size: 13px;
  line-height: 1.65;
}

.question-bank-feedback.is-visible { display: block; }
.question-bank-feedback.is-missing { background: rgba(232, 176, 48, .14); }

.question-bank-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 13px;
}

.question-bank-actions button { padding: 7px 11px; font-size: 12px; }
.question-bank-actions button.primary { background: var(--qb-blue); border-color: var(--qb-blue); color: #fff; }
.question-bank-actions button.mastered { border-color: var(--qb-green); color: var(--qb-green); }
.question-bank-actions button.mastered.is-active { background: var(--qb-green); color: #fff; }

.question-bank-empty {
  padding: 30px 15px;
  text-align: center;
  color: var(--qb-muted);
  border: 1px dashed var(--qb-line);
  border-radius: 10px;
}

.question-bank-catalog {
  display: grid;
  gap: 12px;
}

.question-bank-catalog-group {
  border: 1px solid var(--qb-line);
  border-radius: 11px;
  background: var(--qb-surface);
  padding: 12px;
}

.question-bank-catalog-group h4 {
  color: var(--qb-ink) !important;
  margin: 0 0 8px;
  font-size: 14px;
}

.question-bank-catalog-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 14px;
  list-style: none;
  padding: 0;
}

.question-bank-catalog-list li {
  color: var(--qb-muted);
  font-size: 12px;
  line-height: 1.55;
}

.question-bank-file-stats {
  width: 100%;
  margin: 8px 0 0;
  color: var(--qb-ink);
  font-size: 12px;
}

.question-bank-file-stats th,
.question-bank-file-stats td {
  border-color: var(--qb-line);
  padding: 6px 8px;
}

.question-bank-file-stats th { background: var(--qb-blue-soft); color: var(--qb-ink); }
.question-bank-file-stats tr:nth-child(even) { background: transparent; }

@media (max-width: 760px) {
  .question-bank-head { display: block; }
  .question-bank-integrity { max-width: none; margin-top: 10px; }
  .question-bank-filter { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .question-bank-catalog-list { grid-template-columns: 1fr; }
}

@media (max-width: 430px) {
  .question-bank-shell { padding: 12px; }
  .question-bank-filter { grid-template-columns: 1fr; }
  .question-bank-stem { font-size: 15px; }
}