/* Descarga del enunciado y, cuando existen, enlaces a soluciones privadas. */
.task-aside.task-download {
  background: none;
  border: 0;
  padding: 0;
}

.task-download .task-pdf {
  margin-top: 0;
}

.task-solutions {
  margin-top: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
}

.task-aside .task-solutions h2,
.exam-solutions h3 {
  display: flex;
  align-items: center;
  gap: 8px;
  margin: 0;
  color: var(--ink);
  font-size: .86rem;
  font-weight: 600;
}

.solution-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-top: 8px;
  padding: 11px 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--accent, var(--blue));
  font-size: .8rem;
  line-height: 1.5;
  text-decoration: none;
}

.solution-link:hover {
  border-color: currentColor;
  background: color-mix(in srgb, var(--accent, var(--blue)) 6%, transparent);
}

.solution-link:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 3px;
}

.task-solutions svg {
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
}

.solution-heading {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 8px;
}

.solution-heading:has(.solution-publish:not([hidden])) :is(h2,h3) { padding-top: 5px; }

.solution-publish {
  flex: 0 0 auto;
  min-width: 54px;
  min-height: 44px;
  padding: 4px 2px;
  border: 0;
  border-radius: 4px;
  color: var(--muted);
  background: transparent;
  font: inherit;
  cursor: pointer;
}

.solution-publish:not([hidden]) {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.solution-publish-track {
  display: block;
  box-sizing: border-box;
  width: 36px;
  height: 20px;
  padding: 2px;
  border: 1px solid color-mix(in srgb, var(--muted) 65%, transparent);
  border-radius: 99px;
  background: color-mix(in srgb, var(--muted) 25%, var(--bg));
  transition: background .15s ease, border-color .15s ease;
}

.solution-publish-thumb {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  color: #374151;
  background: #e2e8f0;
  transition: transform .15s ease;
}

.task-solutions .solution-publish svg { width: 10px; height: 10px; flex-basis: 10px; }
.solution-publish .lock-open { display: none; }
.solution-publish-label { font-size: .68rem; line-height: 1.2; }
.solution-publish[aria-checked="true"] { color: var(--accent); }
.solution-publish[aria-checked="true"] .solution-publish-track {
  border-color: var(--accent);
  background: var(--accent);
}
.solution-publish[aria-checked="true"] .solution-publish-thumb {
  transform: translateX(16px);
  color: #6366f1;
  background: white;
}
.solution-publish[aria-checked="true"] .lock-closed { display: none; }
.solution-publish[aria-checked="true"] .lock-open { display: block; }
.solution-publish:hover:not(:disabled) .solution-publish-track { border-color: var(--ink); }
.solution-publish:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.solution-publish:disabled { opacity: .6; cursor: progress; }

@media (prefers-reduced-motion: reduce) {
  .solution-publish-track, .solution-publish-thumb { transition: none; }
}

.authored-instructions h3 {
  margin: 28px 0 12px;
  font-size: 1em;
  font-weight: 650;
  line-height: 1.4;
  break-after: avoid;
}

.authored-instructions .exercise-reference {
  margin: 24px 0;
  break-inside: avoid;
}

.exercise-reference img {
  margin: 10px 0;
}

.exercise-reference figcaption {
  color: var(--muted);
  font-size: .8em;
  line-height: 1.5;
}

.exercise-reference-pair {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 16px;
  align-items: start;
  break-inside: avoid;
}

.exercise-reference-pair figure {
  min-width: 0;
}

@media screen and (max-width: 680px) {
  .exercise-reference-pair {
    grid-template-columns: 1fr;
  }
}

.task-slide-links {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: -10px 0 28px;
}

.slide-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  max-width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 7px;
  color: var(--accent, var(--blue));
  font-size: .8rem;
  line-height: 1.5;
  text-decoration: none;
}

.slide-link:hover {
  border-color: currentColor;
}

.slide-link svg {
  flex: 0 0 16px;
  width: 16px;
  height: 16px;
}

.authored-instructions .exercise-block {
  margin: 44px 0;
  padding: 28px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--surface, white);
  break-inside: avoid;
}

.lm-instructions .exercise-index {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 24px 0;
}

.lm-instructions .exercise-index a {
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 7px;
  font-size: .8rem;
  text-decoration: none;
}

.lm-instructions .exercise-index a:hover,
.lm-instructions .exercise-index a:focus-visible {
  border-color: currentColor;
}

.lm-instructions .exercise-block {
  scroll-margin-top: 100px;
}

.lm-instructions .task-slide-links {
  margin: 0 0 20px;
}

.lm-instructions h4 {
  margin: 24px 0 12px;
  break-after: avoid;
}

.lm-instructions .print-only {
  display: none;
}

.lm-instructions .exercise-table-wrap {
  max-width: 100%;
  overflow-x: auto;
  margin: 24px 0;
}

.lm-instructions .exercise-table-wrap table {
  display: table;
  width: 100%;
  min-width: 800px;
  table-layout: fixed;
  border-collapse: collapse;
  font-size: .85em;
}

.lm-instructions .exercise-table-wrap caption {
  padding-bottom: 12px;
  color: var(--muted);
  text-align: left;
}

.lm-instructions .exercise-table-wrap th:nth-child(1) { width: 11%; }
.lm-instructions .exercise-table-wrap th:nth-child(2) { width: 12%; }
.lm-instructions .exercise-table-wrap th:nth-child(3) { width: 6%; }
.lm-instructions .exercise-table-wrap th:nth-child(4) { width: 19%; }
.lm-instructions .exercise-table-wrap th:nth-child(5) { width: 17%; }
.lm-instructions .exercise-table-wrap th:nth-child(6) { width: 35%; }

.lm-instructions .exercise-table-wrap th,
.lm-instructions .exercise-table-wrap td {
  padding: 10px;
  border: 1px solid var(--line);
  vertical-align: top;
  text-align: left;
}

.solution-availability {
  margin: 12px 0 0;
  color: var(--muted);
  font-size: .75rem;
  line-height: 1.5;
}

.solution-link[aria-disabled="true"] {
  opacity: .6;
  cursor: progress;
}

.solution-session:not([hidden]) {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 16px;
  margin-top: 12px;
  font-size: .75rem;
}

.solution-session a,
.solution-session button {
  padding: 4px 0;
  color: var(--muted);
  font: inherit;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.solution-session button {
  border: 0;
  background: transparent;
  cursor: pointer;
}

.solution-session button:disabled { opacity: .6; cursor: progress; }

.solution-preview {
  width: calc(100vw - 32px);
  height: calc(100dvh - 32px);
  max-width: 1400px;
  max-height: none;
  margin: auto;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 8px;
  color: var(--ink);
  background: var(--bg);
}

.solution-preview[open] {
  display: flex;
  flex-direction: column;
}

.solution-preview::backdrop { background: rgb(0 0 0 / .8); }
body:has(.solution-preview[open]) { overflow: hidden; }

.solution-preview-tools {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px 20px;
  padding: 10px 16px;
  font-size: .85rem;
}

.solution-preview-tools strong { margin-right: auto; }
.solution-preview-tools a { color: var(--accent); }
.solution-preview-tools button {
  min-height: 36px;
  padding: 4px 10px;
  border: 1px solid var(--line);
  border-radius: 4px;
  font: inherit;
  color: inherit;
  background: transparent;
  cursor: pointer;
}

.solution-preview iframe {
  width: 100%;
  flex: 1;
  min-height: 0;
  border: 0;
  background: white;
}

@media print {
  .solution-preview { display: none !important; }
  .lm-instructions .print-only {
    display: block;
  }

  .lm-instructions .exercise-index {
    display: none;
  }

  .lm-instructions .exercise-block {
    break-inside: auto !important;
  }

  .lm-instructions .task-slide-links {
    margin: 0 0 4mm;
    break-inside: avoid;
    break-after: avoid;
  }

  .lm-instructions.authored-instructions .exercise-reference img {
    max-width: 100%;
    max-height: 125mm;
  }

  .lm-instructions pre {
    font-size: 9pt;
    line-height: 1.4;
  }

  .lm-instructions .exercise-table-wrap {
    overflow: visible;
    margin: 4mm 0;
  }

  .lm-instructions .exercise-table-wrap table {
    min-width: 0;
    font-size: 9pt;
  }

  .lm-instructions .exercise-table-wrap th,
  .lm-instructions .exercise-table-wrap td {
    padding: 1.5mm;
  }

}

.project-course {
  margin: 24px 0;
  border: 1px solid var(--line);
  border-radius: 14px;
}

.project-course > summary {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 20px 24px;
  cursor: pointer;
  list-style: none;
}

.project-course > summary::-webkit-details-marker {
  display: none;
}

.project-course > summary:focus-visible {
  outline: 2px solid var(--accent, var(--blue));
  outline-offset: 4px;
  border-radius: 12px;
}

.authored-instructions .project-course > summary h3 {
  margin: 0;
  font-size: 1.1em;
}

.project-course-count {
  margin-left: auto;
  color: var(--muted);
  font-size: .8em;
  white-space: nowrap;
}

.project-course-icon {
  color: var(--accent, var(--blue));
  font-size: 1.25em;
}

.project-course[open] .project-course-icon {
  transform: rotate(180deg);
}

.project-course-content {
  padding: 0 24px 6px;
}

.authored-instructions .project-course .exercise-block {
  margin: 20px 0;
}

.project-course .exercise-block h4 {
  margin: 0 0 14px;
  font-size: 1.2em;
  line-height: 1.35;
  font-weight: 600;
  break-after: avoid;
}

@media screen and (max-width: 600px) {
  .project-course > summary {
    gap: 8px;
    padding: 18px 14px;
  }

  .project-course-content {
    padding: 0 10px 2px;
  }
}

@media print {
  .project-course {
    margin: 5mm 0;
    border: 0;
    border-radius: 0;
  }

  .project-course > summary {
    padding: 3mm 0;
    border-bottom: 1pt solid var(--line);
    break-after: avoid;
  }

  .project-course-content {
    padding: 0;
    break-before: avoid;
  }

  .project-course-content > p:first-child {
    break-after: avoid;
  }

  .project-course-icon {
    display: none;
  }

  .authored-instructions .project-course .exercise-block {
    margin: 4mm 0;
  }
}

.exercise-block-header {
  margin-bottom: 24px;
  break-inside: avoid;
  break-after: avoid;
}

.authored-instructions .exercise-kicker {
  margin: 0 0 10px;
  color: var(--accent, var(--blue));
  font-size: .72rem;
  font-weight: 650;
  letter-spacing: .12em;
  text-transform: uppercase;
}

.authored-instructions .exercise-block h3 {
  margin: 0 0 18px;
  font-size: clamp(1.18rem, 3vw, 1.45rem);
  font-weight: 600;
  line-height: 1.35;
  letter-spacing: -.02em;
}

.authored-instructions .exercise-block > :last-child {
  margin-bottom: 0;
}

.authored-instructions .exercise-block--pending {
  margin: 24px 0;
  border-style: dashed;
  background: transparent;
}

.exercise-reference .slide-caption-link {
  display: inline-block;
  margin-top: 6px;
}

@media screen and (max-width: 600px) {
  .authored-instructions .exercise-block {
    margin: 32px 0;
    padding: 20px 16px;
  }
}

@media print {
  .authored-instructions h3 {
    margin: 5mm 0 3mm;
  }

  .authored-instructions .exercise-reference {
    margin: 3mm 0;
  }

  .authored-instructions .exercise-reference img {
    max-width: 86%;
    margin: 2mm auto;
  }

  .authored-instructions .screen-only {
    display: none;
  }

  .task-slide-links {
    margin: -4mm 0 5mm;
    gap: 2mm;
  }

  .task-main:has(.slide-caption-link) > .task-slide-links {
    display: none;
  }

  .slide-link {
    padding: 1.5mm 2mm;
    font-size: 9pt;
  }

  .authored-instructions .exercise-block {
    margin: 5mm 0;
    padding: 4mm 0 0;
    border: 0;
    border-top: 1pt solid var(--line);
    border-radius: 0;
    background: white;
    break-inside: auto;
  }

  .exercise-block-header {
    margin-bottom: 4mm;
  }

  .authored-instructions .exercise-kicker {
    margin-bottom: 2mm;
    font-size: 9pt;
  }

  .authored-instructions .exercise-block h3 {
    margin-bottom: 3mm;
    font-size: 15pt;
  }

  .authored-instructions .exercise-block--pending {
    margin: 4mm 0;
    padding-top: 3mm;
    break-inside: avoid;
  }

  .authored-instructions .exercise-block:not(:has(.exercise-reference)) {
    break-inside: avoid;
  }

  .authored-instructions .exercise-block.exercise-reference-section {
    break-inside: avoid;
  }

  /* Los enunciados extensos deben aprovechar la página desde su cabecera. */
  .authored-instructions .exercise-block.exercise-block--long {
    break-inside: auto;
  }

  .authored-instructions .exercise-block--long h4 {
    break-after: avoid;
  }

  .authored-instructions .exercise-assessment {
    break-inside: avoid;
  }

  .exercise-reference .slide-caption-link {
    display: inline;
    margin-top: 0;
    margin-left: .35em;
  }

  .exercise-reference figcaption br {
    display: none;
  }

  .task-aside.task-download {
    display: none;
  }
}