/* TUTORIALES · DOCUMENTOS ACUMULADOS Y EXPERIMENTOS */
.js-lesson-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 24px;
  align-items: start;
  margin-top: 30px;
}
.js-lesson-grid .challenge-card {
  scroll-margin-top: calc(var(--header-height) + 20px);
}
.js-lesson-grid .editor-actions {
  font-size: 0.85rem;
}
.js-lesson-grid .editor-actions button {
  font-size: 0.8rem;
}
@media (max-width: 750px) {
  .js-lesson-grid {
    grid-template-columns: 1fr;
  }
}
.writing-practice {
  padding: 24px;
  background: #fff9e5;
  border: 1px solid #eadcae;
  border-radius: 14px;
  margin-bottom: 24px;
}
.writing-practice h4 {
  font-size: 1.2rem;
  margin: 0 0 18px;
}
.writing-practice label {
  display: block;
  margin-bottom: 15px;
}
.writing-practice input {
  accent-color: var(--blue);
}
.writing-practice p {
  font-size: 0.9rem;
}
.writing-practice details {
  margin: 20px 0;
}
.walkthrough {
  display: grid;
  grid-template-columns: 250px minmax(0, 1fr);
  gap: 30px;
  align-items: start;
}
.walk-steps {
  position: sticky;
  top: calc(var(--header-height) + 18px);
  max-height: calc(100vh - var(--header-height) - 40px);
  overflow: auto;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: var(--soft);
}
.walk-steps ol {
  list-style: none;
  padding: 0;
  margin: 0;
}
.walk-steps li + li {
  margin-top: 5px;
}
.walk-steps button {
  display: block;
  width: 100%;
  border: 0;
  border-radius: 8px;
  padding: 12px;
  text-align: left;
  background: transparent;
  color: var(--ink);
  font-size: 0.85rem;
  line-height: 1.5;
  font-weight: 700;
}
.walk-steps button[aria-current="step"] {
  color: white;
  background: var(--blue);
}
.walk-main {
  min-width: 0;
}
.walk-main > header h3 {
  font-size: 1.8rem;
}
.walk-explanation {
  display: grid;
  grid-template-columns: 160px 1fr;
  gap: 14px 22px;
  padding: 22px;
  border: 1px solid var(--line);
  border-radius: 14px;
}
.walk-explanation dt {
  font-size: 0.9rem;
  font-weight: 800;
}
.walk-explanation dd {
  margin: 0;
  color: var(--muted);
  font-size: 0.9rem;
}
#walk-references {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  margin: 18px 0 25px;
}
#walk-references a {
  padding: 7px 12px;
  background: #eef1ff;
  color: var(--blue);
  border-radius: 8px;
  font-size: 0.85rem;
  text-decoration: none;
  font-weight: 800;
}
.walk-experiments {
  padding: 22px;
  background: var(--soft);
  border: 1px solid var(--line);
  border-radius: 14px;
  margin-bottom: 24px;
}
.walk-experiments label {
  display: block;
  margin: 12px 0;
}
.walk-experiments input {
  accent-color: var(--blue);
}
.walk-experiments p {
  margin: 15px 0 0;
  font-size: 0.875rem;
  color: var(--muted);
}
.walk-editors label {
  display: block;
  margin: 20px 0 8px;
  font-weight: 800;
}
.walk-editors textarea {
  width: 100%;
  min-height: 240px;
  max-height: 600px;
  resize: vertical;
  border: 1px solid #d1d9e8;
  border-radius: 12px;
  padding: 18px;
  color: #22324b;
  background: #fbfcff;
  font:
    0.8rem/1.7 "JetBrains Mono",
    monospace;
  tab-size: 2;
}
.walk-main .editor-actions {
  align-items: center;
  margin-bottom: 24px;
}
#walk-width {
  max-width: 210px;
}
.walk-preview-scroll {
  max-width: 100%;
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 12px;
  background: var(--soft);
}
#walk-frame {
  display: block;
  width: 100%;
  height: 520px;
  border: 0;
  background: white;
}
#walk-result-note {
  font-size: 0.875rem;
  color: var(--muted);
  margin-top: 15px;
}
#walk-console {
  min-height: 80px;
  max-height: 260px;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.walk-pagination {
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 30px;
}
@media (max-width: 850px) {
  .walkthrough {
    grid-template-columns: 1fr;
  }
  .walk-steps {
    position: static;
    max-height: 240px;
  }
  .walk-explanation {
    grid-template-columns: 1fr;
    gap: 6px;
  }
  .walk-explanation dd {
    margin-bottom: 12px;
  }
}
@media (max-width: 500px) {
  .walk-experiments,
  .walk-explanation {
    padding: 18px;
  }
  .walk-editors textarea {
    padding: 12px;
    font-size: 0.75rem;
  }
}