.shell {
  width: min(var(--page-width), calc(100% - var(--page-gutter)));
  margin: 0 auto 100px;
  padding: 34px;
  border: 1px solid var(--line);
  border-radius: 24px;
  background: rgb(14 21 23 / 76%);
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 24px;
}

.eyebrow {
  color: var(--lime);
  font: 500 var(--type-label) var(--font-mono);
  letter-spacing: 0.13em;
  text-transform: uppercase;
}

.topbar h1 {
  margin: 7px 0 0;
  font-size: var(--type-section-title);
  letter-spacing: -0.055em;
}

.button {
  min-height: 42px;
  padding: 0 16px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: var(--panel);
  cursor: pointer;
  font-size: var(--type-button);
  font-weight: 800;
}

.button svg {
  width: 17px;
}

.button.primary {
  border-color: var(--lime);
  background: var(--lime);
  color: #07110c;
}

.button:disabled {
  opacity: 0.42;
  cursor: not-allowed;
}

.learning-workspace {
  min-height: 580px;
  display: grid;
  grid-template-columns: 290px minmax(0, 1fr);
  overflow: hidden;
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #0b1214;
}

.lesson-browser {
  max-height: 618px;
  min-height: 0;
  padding: 22px 14px;
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--line);
  background: var(--panel);
}

.lesson-browser h2 {
  margin: 0 5px 18px;
  color: var(--ink);
  font-size: var(--type-card-title);
}

.lesson-browser nav {
  min-height: 0;
  padding: 0 8px 8px 0;
  display: grid;
  grid-auto-rows: max-content;
  align-content: start;
  gap: 10px;
  overflow-y: auto;
  overscroll-behavior: contain;
  scrollbar-color: #465660 transparent;
  scrollbar-width: auto;
}

.example-card {
  width: 100%;
  min-height: 0;
  height: auto;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: #0d1418;
  overflow: visible;
}

.example-card:hover,
.example-card.selected {
  border-color: rgb(52 211 153 / 50%);
  background: rgb(52 211 153 / 8%);
}

.example-button {
  width: 100%;
  min-height: 52px;
  padding: 12px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  border: 0;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  text-align: left;
  white-space: normal;
}

.example-button:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -3px;
}

.example-title {
  min-width: 0;
  color: var(--ink);
  font-size: var(--type-body-large);
  font-weight: 800;
  line-height: 1.35;
  overflow-wrap: anywhere;
}

.example-card-indicators {
  display: flex;
  align-items: center;
  gap: 8px;
}

.difficulty-stamp {
  width: 8px;
  height: 8px;
  padding: 0;
  display: inline-block;
  flex: none;
  border: 0;
  border-radius: 50%;
  background: currentcolor;
}

.difficulty-easy {
  color: #65dba8;
}

.difficulty-medium {
  color: #f1c75b;
}

.difficulty-hard {
  color: #f08d8d;
}

.example-chevron {
  color: #718085;
  font-size: var(--type-icon);
  line-height: 1;
  transition: transform 0.18s ease;
}

.example-button[aria-expanded="true"] .example-chevron {
  transform: rotate(180deg);
}

.example-details {
  width: auto;
  min-height: 0;
  height: auto;
  max-height: none;
  margin: 0 14px;
  padding: 12px 0 14px;
  display: grid;
  gap: 12px;
  border-top: 1px solid var(--line);
  overflow: visible;
}

.example-details[hidden] {
  display: none;
}

.example-field {
  min-width: 0;
  display: grid;
  gap: 5px;
}

.example-field > small {
  color: #718085;
  font: 500 var(--type-label) var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.example-field > span {
  font-size: var(--type-body);
  font-weight: 700;
  line-height: 1.55;
  overflow-wrap: anywhere;
}

.example-concept {
  gap: 3px;
}

.example-concept > span {
  color: var(--lime);
}

.example-concept > em {
  color: #87959a;
  font-size: var(--type-help);
  font-style: normal;
  line-height: 1.55;
  overflow-wrap: anywhere;
}

.concept-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.concept-tags code {
  max-width: 100%;
  padding: 4px 6px;
  border-radius: 5px;
  background: #202937;
  color: #b8c5c8;
  font: 500 var(--type-code) var(--font-mono);
  overflow-wrap: anywhere;
}

.example-card.selected .concept-tags code {
  background: rgb(52 211 153 / 13%);
  color: var(--lime);
}

.editor-panel {
  position: relative;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

.editor-toolbar {
  min-height: 62px;
  padding: 11px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.editor-toolbar > div {
  display: flex;
  align-items: center;
  gap: 8px;
}

.editor-actions {
  margin-left: auto;
}

.editor-file {
  padding: 5px 7px;
  border-radius: 5px;
  background: rgb(52 211 153 / 10%);
  color: var(--lime);
  font: 500 var(--type-button) var(--font-mono);
}

.editor-action-button {
  min-height: 40px;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #202937;
  color: var(--muted);
  cursor: pointer;
  font-size: var(--type-button);
  font-weight: 700;
}

.editor-action-button:hover,
.editor-action-button:focus-visible {
  border-color: rgb(52 211 153 / 55%);
  background: rgb(52 211 153 / 9%);
  color: var(--ink);
}

.editor-action-button:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

.code-editor {
  height: 430px;
  min-width: 560px;
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  overflow: hidden;
  background: #080e10;
}

.line-numbers,
.highlighted-code {
  font: 400 var(--type-editor)/1.65 var(--font-mono);
}

.line-numbers {
  padding: 18px 12px 18px 0;
  overflow: hidden;
  border-right: 1px solid var(--line);
  color: #53666a;
  text-align: right;
  white-space: pre;
  user-select: none;
}

.code-input-wrap {
  position: relative;
  min-width: 0;
  overflow: hidden;
}

.highlighted-code {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  margin: 0;
  padding: 18px 20px;
  overflow: auto;
  border: 0;
  color: var(--muted);
  tab-size: 4;
  white-space: pre;
}

.highlighted-code:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: -2px;
}

.code-line {
  min-height: 1.65em;
  padding: 0 6px;
  display: block;
  border-left: 2px solid transparent;
  cursor: help;
}

.code-line:hover {
  background: rgb(52 211 153 / 7.5%);
}

.code-line.changed-line {
  border-left-color: #ffd166;
  background: rgb(255 209 102 / 10%);
}

.highlighted-code .token-keyword {
  color: #e995c7;
}

.highlighted-code .token-string {
  color: #a8d58b;
}

.highlighted-code .token-number {
  color: #dfb876;
}

.highlighted-code .token-comment {
  color: #61777c;
  font-style: italic;
}

.guided-change {
  min-height: 72px;
  padding: 16px 18px 18px;
  border-top: 1px solid var(--line);
  background: var(--panel);
  color: #d9e4e5;
  font-size: var(--type-body-large);
  font-weight: 700;
}

.guided-change-label {
  margin-bottom: 12px;
  padding: 5px 7px;
  display: inline-block;
  border-radius: 5px;
  background: rgb(52 211 153 / 12%);
  color: var(--lime);
  font: 500 var(--type-label)/1.4 var(--font-mono);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  white-space: nowrap;
}

.guided-change-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 260px), 1fr));
  gap: 10px;
}

.guided-value-control {
  min-height: 70px;
  padding: 11px 13px;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  flex-direction: column;
  gap: 7px;
  border: 1px solid var(--line);
  border-radius: 9px;
  background: #111a1e;
}

.guided-value-control > label {
  color: var(--muted);
  font-size: var(--type-label);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.guided-value-row {
  display: flex;
  align-items: center;
  gap: 8px;
}

.guided-change select {
  min-height: 44px;
  padding: 0 34px 0 11px;
  border: 1px solid rgb(52 211 153 / 45%);
  border-radius: 8px;
  background: #0c1417;
  color: var(--lime);
  cursor: pointer;
  font: 500 var(--type-body-large) var(--font-mono);
}

.guided-action-button {
  min-height: 70px;
  padding: 11px 13px;
  border: 1px solid rgb(52 211 153 / 40%);
  border-radius: 9px;
  background: rgb(52 211 153 / 9%);
  color: var(--lime);
  cursor: pointer;
  font-weight: 700;
  text-align: left;
}

.guided-action-button:hover,
.guided-action-button:focus-visible {
  background: rgb(52 211 153 / 16%);
}

.guided-action-button[aria-pressed="true"] {
  border-color: var(--lime);
  background: rgb(52 211 153 / 16%);
  box-shadow: inset 3px 0 0 var(--lime);
}

.guided-action-button:focus-visible {
  outline: 2px solid var(--lime);
  outline-offset: 2px;
}

#status {
  min-height: 20px;
  color: var(--lime);
  font-size: var(--type-help);
}

.code-tooltip {
  position: fixed;
  z-index: 1000;
  width: max-content;
  max-width: min(360px, calc(100vw - 32px));
  padding: 13px 15px;
  border: 1px solid rgb(52 211 153 / 48%);
  border-radius: 10px;
  background: #202937;
  color: var(--ink);
  box-shadow: 0 14px 36px rgb(0 0 0 / 48%);
  font: 600 var(--type-card-title)/1.55 var(--font-sans);
  pointer-events: none;
}

.code-tooltip[hidden] {
  display: none;
}

@media (max-width: 760px) {
  .shell {
    padding: 22px;
  }

  .topbar {
    align-items: flex-start;
    flex-direction: column;
  }

  .learning-workspace {
    grid-template-columns: 1fr;
    overflow-x: auto;
  }

  .lesson-browser {
    max-height: none;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .lesson-browser nav {
    padding-bottom: 4px;
    display: flex;
    align-items: flex-start;
    gap: 12px;
    overflow-x: auto;
    overflow-y: hidden;
  }

  .example-card {
    min-width: 260px;
  }

  .guided-change-options {
    grid-template-columns: 1fr;
  }

}

/* Keep the MicroPy Kids editor scale above shared workspace defaults. */
body.program-workspace-page[data-program="micropy-kids"] .editor-file {
  font-size: var(--type-button);
}

body.program-workspace-page[data-program="micropy-kids"] .editor-action-button {
  font-size: var(--type-button);
}

body.program-workspace-page[data-program="micropy-kids"] .highlighted-code,
body.program-workspace-page[data-program="micropy-kids"] .line-numbers {
  font-size: var(--type-editor);
}

body.program-workspace-page[data-program="micropy-kids"] .guided-change {
  font-size: var(--type-body-large);
}

body.program-workspace-page[data-program="micropy-kids"] .guided-change-label {
  font-size: var(--type-label);
}

body.program-workspace-page[data-program="micropy-kids"] .guided-change select {
  font-size: var(--type-body-large);
}

body.program-workspace-page[data-program="micropy-kids"] .code-tooltip {
  font-size: var(--type-card-title);
}

body.program-workspace-page[data-program="micropy-kids"] .example-button .example-title {
  font-size: var(--type-body-large);
}

body.program-workspace-page[data-program="micropy-kids"] .example-card .example-field > small {
  font-size: var(--type-label);
}

body.program-workspace-page[data-program="micropy-kids"] .example-card .example-field > span {
  font-size: var(--type-body);
}

body.program-workspace-page[data-program="micropy-kids"] .example-card .example-concept > em {
  font-size: var(--type-help);
}