/* The course page uses paper, rules, and a project specification. */
.course-page {
  background: var(--bg-primary, #FFF8E8);
  font-size: 1.0625rem;
  line-height: 1.7;
}

.course-page .container { padding-inline: 2rem; }
.course-page h1, .course-page h2, .course-page h3 { font-weight: 700; }
.course-page h2 { margin: 0; font-size: clamp(2.25rem, 4vw, 3.75rem); line-height: 1.02; }
.course-page h3 { margin: 0; font-size: 1.75rem; line-height: 1.15; }
.course-page p { color: var(--text-secondary, #3B352C); }
.course-page .course-label { color: var(--text-muted, #6A6256); }
.course-page a:not(.btn) { color: var(--text-primary, #17130A); }
.course-page .btn-primary:hover, .course-page .btn-primary:focus { color: #17130A; }
.course-page .course-section-body a { text-decoration: underline; text-underline-offset: 3px; }
.course-page a:focus-visible, .course-page summary:focus-visible, .course-page pre:focus-visible {
  outline: 2px solid var(--text-primary, #17130A);
  outline-offset: 4px;
}
.course-page [id] { scroll-margin-top: 100px; }

.course-hero { padding: 0 0 3rem; border-bottom: 1px solid var(--border-color, #E6E1D6); }
.course-masthead {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 2rem;
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border-color, #E6E1D6);
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 0.7rem;
  line-height: 1.4;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.course-masthead a { text-decoration: underline; text-underline-offset: 3px; }
.course-edition { margin-left: auto; }
.course-hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.15fr) minmax(0, 0.85fr);
  align-items: start;
  gap: 3rem;
  padding: 3rem 0;
}
.course-hero-copy { padding-block: 1rem; }
.course-hero h1 {
  max-width: 640px;
  font-size: clamp(3.5rem, 7.8vw, 7rem);
  line-height: 0.96;
  letter-spacing: -0.04em;
}
.course-mark { display: inline-block; border-bottom: 5px solid var(--zig-orange, #F7A41D); padding-bottom: 0.125em; }
.course-page .course-lede { margin-top: 1.5rem; font-size: 1.25rem; line-height: 1.6; }
.course-hero-copy .course-lede { max-width: 540px; }
.course-hero-note { max-width: 480px; }
.course-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 1rem 1.5rem; margin-top: 1.5rem; }
.course-status-note { max-width: 520px; margin: 1.5rem 0 0; font-size: 0.9375rem; line-height: 1.55; }
.course-status-note strong { color: var(--text-primary, #17130A); }
.course-status-note .course-text-link { min-height: 32px; }

.course-blueprint { min-width: 0; border: 1px solid var(--text-primary, #17130A); background: var(--bg-secondary, #F5EDDA); }
.course-blueprint-head {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem;
  background: var(--zig-orange, #F7A41D);
  color: #17130A;
  font-family: var(--font-mono, "JetBrains Mono", monospace);
  font-size: 0.65rem;
  line-height: 1.5;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.course-blueprint-body { position: relative; padding: 2rem 1.5rem 1.5rem; }
.course-blueprint-index {
  display: block;
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  color: var(--text-muted, #6A6256);
  font-family: var(--font-display, "IBM Plex Sans Condensed", sans-serif);
  font-size: 4rem;
  line-height: 1;
}
.course-blueprint-body .course-label { max-width: 220px; padding-right: 3rem; }
.course-blueprint h2 { max-width: 240px; margin-bottom: 1rem; font-size: 3rem; }
.course-blueprint h2 > span { display: block; margin-top: 0.5rem; font-size: 1.375rem; font-weight: 500; line-height: 1.25; letter-spacing: 0; }
.course-blueprint-body > p:not(.course-label) { font-size: 0.9375rem; line-height: 1.55; }
.course-flow { list-style: none; padding: 0; margin: 1.5rem 0 0; }
.course-flow li { position: relative; padding: 0.625rem 0 0.625rem 1rem; border-left: 1px solid var(--text-muted, #6A6256); }
.course-flow li::before { content: ""; position: absolute; top: 1.125rem; left: -4px; width: 7px; height: 7px; background: var(--zig-orange, #F7A41D); border: 1px solid var(--text-primary, #17130A); }
.course-flow span { display: block; color: var(--text-muted, #6A6256); font-family: var(--font-mono, "JetBrains Mono", monospace); font-size: 0.625rem; text-transform: uppercase; letter-spacing: 0.06em; }
.course-flow strong { display: block; font-size: 1rem; }
.course-flow code { display: block; padding: 0; background: transparent; color: var(--text-secondary, #3B352C); font-size: 0.75rem; }
.course-preview { margin: 0 1.5rem 1.5rem; border: 1px solid var(--code-line, #27313A); background: var(--code-bg, #101418); }
.course-preview .course-preview-label { margin: 0; padding: 0.75rem 1rem; border-bottom: 1px solid var(--code-line, #27313A); color: #D7CCBB; background: #0B0F12; font-family: var(--font-mono, "JetBrains Mono", monospace); font-size: 0.625rem; letter-spacing: 0.04em; text-transform: uppercase; }
.course-preview pre { margin: 0; padding: 1rem; background: transparent; border: 0; border-radius: 0; color: #F9F4E9; line-height: 1.65; }
.course-preview code { color: inherit; font-size: 0.8125rem; }
.course-prompt { color: #F7A41D; }
.course-output-rule { color: #A49B8B; }
.course-blueprint .course-blueprint-foot { margin: 0; padding: 0.75rem 1.5rem; border-top: 1px solid var(--border-color, #E6E1D6); color: var(--text-muted, #6A6256); font-size: 0.75rem; }

.course-facts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--border-color, #E6E1D6); }
.course-facts > div { padding: 1.25rem 1.5rem 0 0; }
.course-facts > div + div { padding-left: 1.5rem; border-left: 1px solid var(--border-color, #E6E1D6); }
.course-facts dt { margin-bottom: 0.5rem; color: var(--text-muted, #6A6256); font-family: var(--font-mono, "JetBrains Mono", monospace); font-size: 0.625rem; letter-spacing: 0.06em; text-transform: uppercase; }
.course-facts dd { font-family: var(--font-display, "IBM Plex Sans Condensed", sans-serif); font-size: 1.625rem; font-weight: 600; line-height: 1.2; }
.course-facts dd > span { display: block; margin-top: 0.375rem; font-family: var(--font-body, "Source Sans 3", sans-serif); font-size: 0.875rem; font-weight: 400; }

.course-section { padding: 4rem 0; border-bottom: 1px solid var(--border-color, #E6E1D6); }
.course-section-raised { background: var(--bg-secondary, #F5EDDA); }
.course-section-grid { display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); gap: 3rem; }
.course-section-heading h2 { max-width: 450px; }
.course-section-body > p:last-child { margin-bottom: 0; }
.course-section-body .course-lede { margin-top: 0; }
.course-small { font-size: 0.9375rem; line-height: 1.55; }
.course-outcomes { padding: 0; margin: 1.5rem 0; list-style: none; }
.course-outcomes li { display: flex; align-items: baseline; gap: 1.5rem; padding: 1rem 0; border-top: 1px solid var(--border-color, #E6E1D6); }
.course-outcomes li > span { flex-shrink: 0; font-family: var(--font-mono, "JetBrains Mono", monospace); font-size: 0.75rem; color: var(--text-muted, #6A6256); }
.course-outcomes p { margin: 0.375rem 0 0; font-size: 1rem; }
.course-checklist { margin: 1.5rem 0; padding: 0; list-style: none; }
.course-checklist li { position: relative; padding: 0.75rem 0 0.75rem 1.25rem; border-bottom: 1px solid var(--border-color, #E6E1D6); }
.course-checklist li::before { content: ""; position: absolute; top: 1.25rem; left: 0; width: 5px; height: 5px; background: var(--text-primary, #17130A); }
.course-boundary { border-left: 3px solid var(--zig-orange, #F7A41D); margin-top: 2rem; padding: 0.25rem 0 0.25rem 1.5rem; }
.course-boundary .course-label { margin-bottom: 0.75rem; }
.course-boundary p:last-child { margin-bottom: 0; }

.course-curriculum-heading { display: flex; justify-content: space-between; align-items: end; gap: 3rem; margin-bottom: 2rem; }
.course-curriculum-heading > p { max-width: 440px; margin: 0; }
.course-curriculum { list-style: none; padding: 0; border-top: 1px solid var(--text-primary, #17130A); }
.course-curriculum li { display: grid; grid-template-columns: 64px minmax(0, 1fr) minmax(150px, 200px); gap: 1.5rem; align-items: baseline; padding: 1.5rem 0; border-bottom: 1px solid var(--border-color, #E6E1D6); }
.course-unit-number { color: var(--text-muted, #6A6256); font-family: var(--font-display, "IBM Plex Sans Condensed", sans-serif); font-size: 2rem; line-height: 1; }
.course-curriculum li p { max-width: 650px; margin: 0.75rem 0 0; }
.course-unit-artifact { color: var(--text-muted, #6A6256); font-family: var(--font-mono, "JetBrains Mono", monospace); font-size: 0.7rem; line-height: 1.5; }
.course-sample { display: grid; grid-template-columns: minmax(0, 0.85fr) minmax(0, 1.15fr); gap: 3rem; }
.course-sample .btn { margin-top: 0.5rem; }

.course-offer { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(0, 0.7fr); border: 1px solid var(--text-primary, #17130A); }
.course-offer-copy { padding: 2.5rem; }
.course-offer-copy h2 { margin-bottom: 1.5rem; }
.course-refund { margin-top: 1.5rem; border-top: 1px solid var(--border-color, #E6E1D6); padding-top: 1.5rem; }
.course-refund .course-label { margin-bottom: 0.5rem; }
.course-refund p:last-child { margin-bottom: 0; font-size: 0.9375rem; }
.course-offer-action { display: flex; flex-direction: column; justify-content: center; align-items: start; padding: 2rem; background: var(--bg-secondary, #F5EDDA); border-left: 1px solid var(--text-primary, #17130A); }
.course-offer-action .course-price { margin: 0 0 1.5rem; color: var(--text-primary, #17130A); font-family: var(--font-display, "IBM Plex Sans Condensed", sans-serif); font-size: 2rem; line-height: 1; }
.course-price strong { font-size: clamp(5rem, 8vw, 6.5rem); font-weight: 700; letter-spacing: -0.04em; }
.course-offer-action .btn { width: 100%; justify-content: center; padding-inline: 1rem; margin-block: 0.75rem; }
.course-page [data-course-checkout]:disabled { cursor: not-allowed; background: var(--bg-secondary, #F5EDDA); color: var(--text-muted, #6A6256); border-color: var(--text-muted, #6A6256); }
.course-offer-action .course-small { margin-top: 0.75rem; margin-bottom: 0; font-size: 0.8125rem; }
.course-offer-action .course-payment-closed { width: 100%; margin: 1rem 0 0; padding: 0.75rem; border: 1px dashed var(--text-muted, #6A6256); font-family: var(--font-mono, "JetBrains Mono", monospace); font-size: 0.7rem; text-align: center; text-transform: uppercase; letter-spacing: 0.04em; }

.course-faq { border-top: 1px solid var(--text-primary, #17130A); }
.course-faq details { border-bottom: 1px solid var(--border-color, #E6E1D6); }
.course-faq summary { display: flex; justify-content: space-between; align-items: center; gap: 1.5rem; padding: 1.25rem 0; list-style: none; cursor: pointer; font-size: 1.125rem; font-weight: 600; line-height: 1.4; }
.course-faq summary::-webkit-details-marker { display: none; }
.course-faq-mark { flex-shrink: 0; font-family: var(--font-mono, "JetBrains Mono", monospace); font-size: 1.25rem; }
.course-faq details[open] .course-faq-mark { transform: rotate(45deg); }
.course-faq details > div { padding: 0 2.5rem 0.25rem 0; }
.course-page .newsletter-signup { padding-block: 4rem; }
.course-page .newsletter-copy h2 { font-size: clamp(2.25rem, 4vw, 3.75rem); }

@media (max-width: 960px) {
  .course-hero-grid { gap: 2rem; }
  .course-hero h1 { font-size: clamp(3.5rem, 8vw, 5.5rem); }
  .course-section-grid, .course-sample { gap: 2rem; }
  .course-offer { grid-template-columns: minmax(0, 1fr) minmax(280px, 0.7fr); }
  .course-offer-copy { padding: 2rem; }
}

@media (max-width: 768px) {
  .course-page .container { padding-inline: 1.5rem; }
  .course-hero-grid, .course-section-grid, .course-sample, .course-offer { grid-template-columns: minmax(0, 1fr); }
  .course-hero-grid { padding: 2rem 0; }
  .course-hero h1 { font-size: clamp(3.5rem, 12vw, 6rem); }
  .course-hero-copy { padding-block: 0; }
  .course-hero-copy .course-lede { max-width: 580px; }
  .course-blueprint { max-width: 560px; }
  .course-blueprint-body { padding: 1.5rem; }
  .course-flow { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
  .course-flow li { padding-left: 0.75rem; }
  .course-flow strong { line-height: 1.4; margin-block: 0.25rem; }
  .course-flow code { overflow-wrap: anywhere; }
  .course-facts > div, .course-facts > div + div { padding: 1rem 0.75rem; }
  .course-facts dd { font-size: 1.375rem; }
  .course-section { padding-block: 3rem; }
  .course-section-heading h2 { max-width: 600px; }
  .course-curriculum-heading { display: grid; gap: 1.5rem; }
  .course-curriculum-heading > p { max-width: 600px; }
  .course-curriculum li { grid-template-columns: 40px minmax(0, 1fr); gap: 0.5rem 1rem; }
  .course-unit-artifact { grid-column: 2; }
  .course-offer-action { border-left: 0; border-top: 1px solid var(--text-primary, #17130A); }
  .course-offer-action .btn { width: auto; min-width: 240px; }
}

@media (max-width: 520px) {
  .course-page .container { padding-inline: 1rem; }
  .course-masthead { gap: 0.75rem 1rem; font-size: 0.625rem; }
  .course-edition { display: none; }
  .course-hero h1 { font-size: clamp(3.25rem, 14.5vw, 4.5rem); }
  .course-actions { align-items: start; flex-direction: column; gap: 0.75rem; }
  .course-flow { display: block; }
  .course-facts { grid-template-columns: minmax(0, 1fr); }
  .course-facts > div, .course-facts > div + div { border-left: 0; border-bottom: 1px solid var(--border-color, #E6E1D6); padding: 1rem 0; }
  .course-facts > div:last-child { border-bottom: 0; }
  .course-facts dd > span { display: inline; margin: 0; }
  .course-offer-copy, .course-offer-action { padding: 1.5rem; }
  .course-offer-action .btn { width: 100%; min-width: 0; }
  .course-preview { margin-inline: 1rem; }
  .course-preview pre { padding: 0.875rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .course-page *, .course-page *::before, .course-page *::after { transition: none; }
}