@import url('./lesson.css');

.lambda-page {
  --lambda-keyword: #7358a6;
  --lambda-input: #356c9b;
  --lambda-expression: #267768;
}
.keyword-color { color: var(--lambda-keyword); }
.input-color { color: var(--lambda-input); }
.expression-color { color: var(--lambda-expression); }
.lambda-page .lesson-content { max-width: 1120px; }
.section-intro { margin-top: 14px; max-width: 66ch; color: var(--color-muted); }
.section-intro code { color: var(--color-ink); font-size: .94em; }
.lambda-section { margin-top: 48px; padding-top: 36px; border-top: 1px solid var(--color-line); }
.learning-note { margin-top: 14px; max-width: 70ch; color: var(--color-muted); font-size: 16px; }
.learning-note strong { font-weight: 600; color: var(--color-ink); }
.function-canvas { margin-top: 24px; }
.function-flow { display: grid; grid-template-columns: 1fr 36px 2.2fr 36px 1fr; align-items: center; gap: 12px; padding: 30px 28px; }
.flow-value { display: flex; flex-direction: column; align-items: center; gap: 6px; min-width: 0; }
.flow-label { color: var(--color-muted); font-size: 16px; }
.number-token { display: block; font: 500 48px/1.4 var(--font-mono); letter-spacing: -.05em; }
.flow-caption { font: 16px/1.5 var(--font-mono); color: var(--color-muted); }
.flow-value > span.flow-caption { font-family: var(--font-sans); }
.flow-arrow { justify-self: center; color: var(--color-line-strong); width: 28px; height: 28px; }
.function-rule { display: flex; flex-direction: column; align-items: center; gap: 12px; padding: 20px 8px; background: var(--color-surface); border-radius: 8px; }
.rule-code { white-space: nowrap; font-size: clamp(18px, 1.8vw, 26px); letter-spacing: -.04em; }
.demo-controls { display: flex; justify-content: space-between; align-items: center; gap: 32px; border-top: 1px solid var(--color-line); padding: 18px 24px; }
.demo-controls label { display: block; font-size: 16px; }
.slider-control { display: flex; align-items: center; gap: 18px; flex: 1; max-width: 370px; }
.slider-control label { white-space: nowrap; }
.slider-control input { width: 100%; min-width: 64px; min-height: 44px; margin: 0; accent-color: var(--lambda-input); cursor: pointer; }
.rule-control { display: flex; align-items: center; gap: 12px; }
.rule-control select { font-size: 16px; min-height: 44px; padding: 7px 30px 7px 12px; border: 1px solid var(--color-line-strong); border-radius: 6px; background: white; }
.syntax-anatomy { display: grid; grid-template-columns: 1.3fr 1fr .65fr 1.65fr; gap: 12px; max-width: 700px; margin: 28px auto 24px; }
.syntax-part { display: flex; align-items: center; flex-direction: column; gap: 14px; text-align: center; }
.syntax-token { min-height: 64px; width: 100%; padding: 8px 12px; font: 500 32px/1.3 var(--font-mono); letter-spacing: -.04em; border: 2px solid transparent; border-radius: 8px; background: var(--color-surface); white-space: nowrap; }
.syntax-token.keyword-color { background: var(--color-not-soft); }
.syntax-token.input-color { background: var(--color-and-soft); }
.syntax-token.expression-color { background: var(--color-or-soft); }
.syntax-token[aria-pressed='true'] { border-color: currentColor; }
.syntax-token:hover { box-shadow: inset 0 0 0 1px currentColor; }
.syntax-part > span { font-size: 16px; color: var(--color-muted); }
.part-explanation { min-height: 60px; padding: 18px 0; border-bottom: 1px solid var(--color-line); font-size: 17px; }
.part-explanation strong { font-family: var(--font-mono); font-weight: 500; }
.lambda-detail { margin-top: 14px; }
.lambda-detail summary { min-height: 44px; padding: 10px 0; font-size: 16px; cursor: pointer; width: fit-content; }
.lambda-detail summary:hover { text-decoration: underline; text-underline-offset: 5px; }
.detail-content { padding: 12px 0 4px; font-size: 16px; color: var(--color-muted); }
.detail-content p + p { margin-top: 14px; }
.detail-expression { display: block; padding: 20px 0; font-size: 24px; }
.call-canvas { margin-top: 24px; }
.call-code { background: var(--color-surface); padding: 24px 0; border-bottom: 1px solid var(--color-line); }
.code-row { display: flex; align-items: center; flex-wrap: wrap; gap: 8px 20px; padding: 10px 24px; border-left: 3px solid transparent; font-size: 21px; }
.code-row.is-active { border-left-color: var(--lambda-keyword); background: white; }
.code-row.is-pending code { color: var(--color-muted); }
.code-row.is-pending code span { color: inherit; }
.line-number { color: var(--color-muted); font: 14px/1.6 var(--font-mono); }
.pending-label { font: 16px/1.5 var(--font-sans); color: var(--color-muted); }
.call-stage { padding: 28px 24px; min-height: 188px; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 18px; }
.call-visual { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 18px; font-size: 27px; }
.call-visual .icon { color: var(--color-line-strong); }
.saved-rule { font-size: 20px; color: var(--lambda-keyword); border: 1px solid #d4c8e7; border-radius: 8px; padding: 8px 20px; background: var(--color-not-soft); }
.bound-input { color: var(--lambda-input); background: var(--color-and-soft); padding: 7px 14px; border-radius: 6px; }
.returned-value { color: var(--lambda-expression); background: var(--color-or-soft); padding: 5px 20px; border-radius: 6px; font-size: 32px; }
.call-stage p { color: var(--color-muted); font-size: 17px; max-width: 55ch; text-align: center; }
.def-comparison { display: grid; grid-template-columns: 1fr 1.2fr; gap: 24px; margin: 8px 0 20px; }
.def-comparison h3 { font-size: 16px; font-weight: 500; color: var(--color-ink); }
.def-comparison pre { margin: 12px 0 0; font-size: 16px; color: var(--color-ink); white-space: pre-wrap; overflow-wrap: anywhere; }
.use-detail { margin-top: 18px; }
.sort-code { padding: 20px; margin: 20px 0; background: var(--color-surface); border-radius: 8px; color: var(--color-ink); font-size: 16px; white-space: pre-wrap; overflow-wrap: anywhere; }
.sort-demo { padding: 8px 0 16px; }
.sort-label { color: var(--color-ink); }
.word-order { display: flex; gap: 28px; list-style: none; padding: 0; margin: 18px 0 24px; }
.word-order li { min-width: 90px; display: flex; flex-direction: column; align-items: center; gap: 6px; border-bottom: 2px solid var(--color-line); padding: 0 12px 14px; }
.word-order code { font-size: 24px; color: var(--color-ink); }
.word-order span { font-size: 16px; color: var(--lambda-expression); }
#sort-explanation { margin-top: 16px; }
.lesson-takeaway { padding-top: 28px; margin-top: 32px; }
.lesson-takeaway > p:first-child { font-size: 16px; color: var(--color-muted); }
.lesson-takeaway > code { display: block; margin: 12px 0; font-size: 28px; letter-spacing: -.04em; }
.lesson-takeaway > p:last-child { color: var(--color-muted); font-size: 17px; }
.lambda-page .lesson-end { justify-content: flex-start; padding-top: 24px; }
.quiz-code { margin: 0; font: 24px/1.65 var(--font-mono); white-space: pre-wrap; overflow-wrap: anywhere; max-width: 100%; }
.lambda-answers { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; }
.lambda-answers button { font-family: var(--font-mono); font-size: 18px; min-width: 92px; border-width: 2px; }
.lambda-answers button[aria-pressed='true'] { border-color: var(--color-ink); }
.lambda-answers button.is-wrong { border-color: var(--color-error); background: var(--color-error-soft); }
.lambda-answers button.is-correct { border-color: var(--color-success); background: var(--color-success-soft); }
.lambda-practice .practice-feedback { font-size: 17px; text-align: center; min-height: 56px; }
.practice-feedback.is-correct { color: var(--color-success); }
.practice-feedback.is-wrong { color: var(--color-error); }
.lambda-page .practice-links { align-items: baseline; }
.lambda-page .practice-links .learning-note { margin: 0; }
.completion-example { display: block; margin: 0 0 32px; font-size: 28px; }

@media (max-width: 1100px) and (min-width: 901px) {
  .function-flow { padding: 24px 18px; gap: 8px; grid-template-columns: 1fr 20px 2.2fr 20px 1fr; }
  .demo-controls { gap: 20px; }
  .slider-control { gap: 12px; }
  .rule-control { gap: 6px; flex-direction: column; align-items: flex-start; }
  .def-comparison { grid-template-columns: 1fr; }
}
@media (max-width: 700px) {
  .lambda-section { margin-top: 36px; padding-top: 28px; }
  .section-intro { font-size: 17px; }
  .function-flow { grid-template-columns: 1fr 16px 2.4fr 16px 1fr; gap: 4px; padding: 24px 12px; }
  .flow-label { font-size: 16px; }
  .number-token { font-size: 32px; }
  .flow-arrow { width: 16px; height: 16px; }
  .function-rule { padding: 16px 8px; gap: 10px; }
  .rule-code { font-size: 16px; }
  .flow-caption { font-size: 16px; }
  .flow-value > span.flow-caption { font-size: 14px; }
  .demo-controls { padding: 12px 16px; flex-direction: column; align-items: stretch; gap: 4px; }
  .slider-control { max-width: none; gap: 18px; }
  .rule-control { justify-content: space-between; gap: 12px; }
  .syntax-anatomy { grid-template-columns: 1.3fr .9fr .65fr 1.4fr; gap: 8px; margin: 24px 0 12px; }
  .syntax-token { font-size: 23px; min-height: 56px; padding: 8px 4px; }
  .syntax-part { gap: 10px; }
  .syntax-part > span { font-size: 16px; line-height: 1.4; }
  .part-explanation { min-height: 96px; }
  .code-row { padding: 10px 12px; font-size: 16px; gap: 8px; }
  .pending-label { margin-left: auto; font-size: 14px; }
  .call-stage { padding: 24px 16px; min-height: 210px; }
  .call-stage p { font-size: 16px; }
  .call-visual { font-size: 22px; gap: 10px; }
  .saved-rule { font-size: 18px; padding: 8px 14px; }
  .call-canvas .canvas-footer { font-size: 14px; gap: 8px; }
  .call-canvas .step-actions { gap: 0; }
  .call-canvas .step-actions .button { padding: 10px; font-size: 14px; }
  .call-canvas .step-actions .icon { display: none; }
  .def-comparison { grid-template-columns: 1fr; }
  .word-order { gap: 12px; }
  .word-order li { min-width: 0; padding: 0 8px 12px; }
  .word-order code { font-size: 21px; }
  .lesson-takeaway > code { font-size: 22px; }
  .lambda-practice .section-heading { align-items: flex-start; }
  .lambda-practice #question-count { white-space: nowrap; font-size: 16px; }
  .quiz-code { font-size: 20px; }
  .lambda-answers { width: 100%; }
  .lambda-answers button { flex: 1 0 auto; font-size: 17px; }
  .lambda-page .practice-links { flex-direction: column; gap: 8px; }
  .completion-example { font-size: 24px; }
}
@media (max-width: 374px) {
  .function-flow { grid-template-columns: 1fr 12px 2.6fr 12px 1fr; padding: 20px 8px; gap: 2px; }
  .function-rule { padding-left: 5px; padding-right: 5px; }
  .rule-code { font-size: 15px; }
  .number-token { font-size: 28px; }
  .flow-arrow { width: 12px; height: 12px; }
  .code-row { font-size: 14px; }
  .syntax-token { font-size: 21px; }
  .lesson-takeaway > code { font-size: 20px; }
}