.studio-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  align-items: center;
  margin-bottom: var(--space-5);
}

.studio-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
  margin-left: auto;
  flex-shrink: 0;
}

.studio-actions .inline-form {
  display: inline-flex;
}

.studio-module {
  margin: 0 0 var(--space-8);
}

.studio-module-head {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.studio-module-head h2 {
  margin: 0;
  flex: 1;
  min-width: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--space-2);
}

.studio-module-head .studio-actions {
  margin-left: 0;
}

.studio-lessons,
.studio-steps {
  list-style: none;
  margin: 0;
  padding: 0;
}

.studio-lessons {
  padding-left: 8px;
}

.studio-lessons > li,
.studio-steps > li {
  position: relative;
  padding-left: 22px;
}

.studio-lessons > li {
  margin: 0 0 var(--space-3);
}

.studio-lesson-card {
  background: var(--mshp-paper);
  border: 1px solid var(--mshp-line);
  border-radius: var(--radius-lg);
  padding: 8px 10px 10px;
}

.studio-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  min-height: 44px;
  padding: 4px 8px;
  margin: 0 -4px;
  border-radius: var(--radius-md);
  transition: background var(--transition-fast);
}

.studio-lesson-head:hover,
.studio-steps > li:hover .studio-step-row {
  background: var(--mshp-surface-3);
}

.studio-lessons > li::before,
.studio-steps > li::before {
  content: "";
  position: absolute;
  left: 7px;
  top: 0;
  bottom: 0;
  border-left: 1px solid var(--mshp-line-strong);
}

.studio-lessons > li:last-child::before,
.studio-steps > li:last-child::before {
  bottom: auto;
  height: 22px;
}

.studio-lessons > li::after,
.studio-steps > li::after {
  content: "";
  position: absolute;
  left: 7px;
  top: 22px;
  width: 14px;
  border-top: 1px solid var(--mshp-line-strong);
}

.studio-steps {
  margin-top: var(--space-1);
  padding-left: 18px;
}

.studio-lesson-title {
  margin: 0;
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--mshp-text);
  line-height: 1.3;
}

.studio-step-title {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--mshp-text-body);
}

.option-row {
  border: 1px solid var(--mshp-line);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  margin: var(--space-2) 0;
  background: var(--mshp-surface);
}

.option-flags {
  display: flex;
  gap: var(--space-4);
  align-items: center;
  margin: 0;
}

[data-formset-row][hidden] {
  display: none;
}

.option-flags label {
  display: flex;
  gap: var(--space-2);
  align-items: center;
  font-weight: 500;
  margin: 0;
}

.form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.studio-task-page .form-card {
  max-width: none;
}

.studio-task-bar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.studio-task-bar .form-actions {
  margin-top: 0;
}

.studio-task-usages {
  margin-top: var(--space-10);
}

.studio-task-usages h2 {
  margin-top: 0;
}

.stack-gap {
  margin-top: var(--space-4);
}

.step-editor textarea[name="starter_stdin"] {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 13px;
  line-height: 1.45;
}

.studio-monaco {
  display: grid;
  gap: 8px;
  margin: 0 0 1em;
}

.studio-monaco .sandbox-editor {
  margin-top: 4px;
}

.EasyMDEContainer {
  margin: 0 0 0.5em;
}

.EasyMDEContainer .editor-toolbar {
  border: 1px solid var(--mshp-line);
  border-bottom: 0;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  background: var(--mshp-surface);
}

.EasyMDEContainer .CodeMirror {
  border: 1px solid var(--mshp-line);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  min-height: 280px;
  font-family: inherit;
  font-size: 16px;
  font-weight: 400;
  line-height: 1.5;
  color: var(--mshp-text-body);
  background: var(--mshp-paper);
}

.EasyMDEContainer .CodeMirror-scroll {
  min-height: 280px;
}

.EasyMDEContainer .CodeMirror pre.CodeMirror-line,
.EasyMDEContainer .CodeMirror pre.CodeMirror-line-like {
  font-size: inherit;
  line-height: inherit;
}

.EasyMDEContainer .cm-s-easymde .cm-header,
.EasyMDEContainer .cm-s-easymde .cm-header-1,
.EasyMDEContainer .cm-s-easymde .cm-header-2,
.EasyMDEContainer .cm-s-easymde .cm-header-3,
.EasyMDEContainer .cm-s-easymde .cm-header-4,
.EasyMDEContainer .cm-s-easymde .cm-header-5,
.EasyMDEContainer .cm-s-easymde .cm-header-6,
.EasyMDEContainer .cm-s-easymde .cm-strong,
.EasyMDEContainer .cm-s-easymde .cm-em,
.EasyMDEContainer .cm-s-easymde .cm-link,
.EasyMDEContainer .cm-s-easymde .cm-url,
.EasyMDEContainer .cm-s-easymde .cm-quote,
.EasyMDEContainer .cm-s-easymde .cm-comment,
.EasyMDEContainer .cm-s-easymde .cm-formatting,
.EasyMDEContainer .cm-s-easymde .cm-formatting-header,
.EasyMDEContainer .cm-s-easymde .cm-formatting-strong,
.EasyMDEContainer .cm-s-easymde .cm-formatting-em,
.EasyMDEContainer .cm-s-easymde .cm-hr,
.EasyMDEContainer .cm-s-easymde .cm-image,
.EasyMDEContainer .cm-s-easymde .cm-string,
.EasyMDEContainer .cm-s-easymde .cm-keyword {
  font-size: inherit;
  font-weight: inherit;
  font-style: inherit;
  font-family: inherit;
  line-height: inherit;
  margin: 0;
  color: inherit;
  background: none;
  text-decoration: none;
}

.EasyMDEContainer .editor-preview,
.EasyMDEContainer .editor-preview-side {
  background: var(--mshp-paper);
}

.EasyMDEContainer.sided--no-fullscreen {
  display: flex;
  flex-wrap: wrap;
}

.EasyMDEContainer.sided--no-fullscreen .editor-toolbar {
  flex: 1 1 100%;
}

.EasyMDEContainer.sided--no-fullscreen .CodeMirror-sided {
  width: 50%;
  flex: 1 1 50%;
  min-width: 0;
  border-right: 0;
  border-radius: 0 0 0 var(--radius-md);
}

.EasyMDEContainer.sided--no-fullscreen .editor-preview-active-side {
  position: static;
  width: 50%;
  flex: 1 1 50%;
  min-width: 0;
  min-height: 280px;
  height: auto;
  border: 1px solid var(--mshp-line);
  border-radius: 0 0 var(--radius-md) 0;
  overflow: auto;
}

.EasyMDEContainer .editor-preview-side.prose > :first-child {
  margin-top: 0;
}

@media (max-width: 768px) {
  .EasyMDEContainer.sided--no-fullscreen .CodeMirror-sided,
  .EasyMDEContainer.sided--no-fullscreen .editor-preview-active-side {
    width: 100%;
    flex: 1 1 100%;
    border-radius: 0;
  }

  .EasyMDEContainer.sided--no-fullscreen .CodeMirror-sided {
    border-right: 1px solid var(--mshp-line);
    border-bottom: 0;
  }

  .EasyMDEContainer.sided--no-fullscreen .editor-preview-active-side {
    border-radius: 0 0 var(--radius-md) var(--radius-md);
    min-height: 180px;
  }
}

.md-picker {
  position: fixed;
  inset: 0;
  z-index: 80;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-4);
  background: rgba(29, 44, 57, 0.45);
}

.md-picker[hidden] {
  display: none;
}

.md-picker__dialog {
  background: var(--mshp-paper);
  border-radius: var(--radius-xl);
  max-width: 720px;
  width: 100%;
  max-height: min(80vh, 640px);
  overflow: auto;
  padding: var(--space-5);
}

.md-picker__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.md-picker__head h2 {
  margin: 0;
  font-size: 1.15rem;
}

.md-picker__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: var(--space-3);
}

.md-picker__item {
  border: 1px solid var(--mshp-line);
  border-radius: var(--radius-md);
  background: var(--mshp-surface);
  padding: var(--space-2);
  cursor: pointer;
  text-align: left;
}

.md-picker__item img {
  display: block;
  width: 100%;
  height: 88px;
  object-fit: cover;
  border-radius: var(--radius-sm);
}

.md-picker__item span {
  display: block;
  margin-top: 6px;
  font-size: 0.8rem;
  color: var(--mshp-muted-strong);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.md-picker__empty {
  color: var(--mshp-muted);
}

.md-picker__actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-4);
  align-items: center;
}

.md-picker__upload {
  cursor: pointer;
}