/* Academic reading UI. Hero sizing is intentionally unchanged (R18 / FE02). */
.academic-section, .academic-detail-section {
    font-family: var(--font-ui);
    --academic-muted: #60677b;
}
.academic-section [hidden] { display: none; }
.ag-explorer { scroll-margin-top: 100px; }
.ag-major-orientation { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 32px; border-top: 1px solid var(--border); padding-top: 24px; margin-bottom: 32px; }
.ag-orientation-number { display: block; font-size: 13px; color: var(--academic-muted); margin-bottom: 10px; }
.ag-major-orientation h3 { font: inherit; font-size: 18px; font-weight: 600; color: var(--primary); margin: 0 0 8px; }
.ag-major-orientation p { font-size: 15px; line-height: 1.75; color: var(--academic-muted); }
.ag-majors { grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; margin-bottom: 32px; }
.ag-major-card { display: flex; flex-direction: column; gap: 14px; padding: 22px 20px; min-width: 0; overflow: hidden; }
.ag-major-title { font-size: 19px; font-weight: 600; line-height: 1.45; overflow-wrap: anywhere; }
.ag-major-summary { font-size: 14px; line-height: 1.75; color: var(--text-secondary); flex: 1; }
.ag-major-action { display: flex; align-items: center; justify-content: space-between; gap: 8px; font-size: 14px; font-weight: 600; }
.ag-major-action { min-height: 44px; border-top: 1px solid var(--border); padding-top: 12px; }
.ag-official-note { border-left: 3px solid var(--border-strong); padding: 4px 0 4px 20px; margin-top: 32px; }
.ag-official-note h3 { font: inherit; font-size: 16px; font-weight: 600; color: var(--primary); margin: 0 0 8px; }
.ag-official-note p { max-width: 85ch; font-size: 14px; line-height: 1.8; color: var(--academic-muted); }
.ag-official-note nav { display: flex; flex-wrap: wrap; gap: 0 24px; margin-top: 8px; }
.ag-official-note a { display: inline-flex; gap: 8px; align-items: center; min-height: 44px; font-size: 14px; color: var(--blue); }
.ag-explorer-heading { margin-bottom: 24px; }
.ag-explorer-heading h2 { font-size: 28px; line-height: 1.4; color: var(--primary); font-weight: 600; margin: 0 0 8px; }
.ag-explorer-heading p { font-size: 15px; color: var(--academic-muted); line-height: 1.75; }
.ag-tabs { gap: 32px; margin-bottom: 32px; }
.ag-tab { font-family: inherit; font-size: 17px; min-height: 48px; padding: 10px 2px; }
.ag-tools { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) minmax(0, 1.5fr); gap: 20px; align-items: end; margin-bottom: 16px; }
.ag-field { display: grid; gap: 8px; min-width: 0; font-size: 14px; color: var(--academic-muted); }
.ag-field select, .ag-search-wrap input { display: block; width: 100%; min-width: 0; height: 48px; font: inherit; font-size: 16px; border: 1px solid var(--border-strong); border-radius: 8px; background: #fff; color: var(--primary); padding: 10px 12px; }
.ag-field select { text-overflow: ellipsis; }
.ag-search-wrap { display: block; flex: initial; min-width: 0; }
.ag-search-wrap input { padding-left: 40px; }
.ag-search-wrap input::placeholder { color: var(--academic-muted); opacity: 1; }
.ag-search-wrap i { font-size: 18px; color: var(--academic-muted); }
.ag-result-meta { font-size: 14px; color: var(--academic-muted); margin: 16px 0 28px; min-height: 22px; }
.ag-course-group { display: grid; grid-template-columns: 112px minmax(0, 1fr); gap: 28px; margin-bottom: 40px; border-top: 1px solid var(--border-strong); padding-top: 24px; }
.ag-stage-heading h3 { font-size: 22px; font-weight: 600; line-height: 1.5; color: var(--primary); }
.ag-stage-heading > span { display: block; margin-top: 6px; font-size: 14px; color: var(--academic-muted); }
.ag-term-label { font-size: 14px; font-weight: 600; color: var(--academic-muted); margin-bottom: 6px; }
.ag-term-group + .ag-term-group { margin-top: 24px; }
.ag-course-row { display: grid; grid-template-columns: 88px minmax(0, 1fr) 20px; align-items: start; gap: 18px; padding: 20px 8px; border-bottom: 1px solid var(--border); border-radius: 4px; }
.ag-course-code { font-size: 13px; line-height: 1.65; padding-top: 3px; overflow-wrap: anywhere; }
.ag-course-body { display: grid; gap: 7px; min-width: 0; }
.ag-course-name { font-family: inherit; font-size: 18px; line-height: 1.6; font-weight: 600; white-space: normal; overflow: visible; text-overflow: clip; overflow-wrap: anywhere; }
.ag-course-meta { display: block; font-size: 14px; line-height: 1.7; color: var(--academic-muted); white-space: normal; overflow-wrap: anywhere; }
.ag-course-summary { display: block; color: var(--text-secondary); font-size: 15px; line-height: 1.8; overflow-wrap: anywhere; }
.ag-course-prereq { display: block; font-size: 14px; line-height: 1.75; color: var(--academic-muted); overflow-wrap: anywhere; }
.ag-course-prereq strong { color: var(--primary); font-weight: 500; margin-right: 10px; }
.ag-course-arrow { font-size: 18px; color: var(--academic-muted); margin-top: 5px; }
.ag-expand, .ag-text-button { min-height: 44px; font: inherit; font-size: 15px; padding: 10px 4px; color: var(--blue); text-decoration: underline; text-underline-offset: 4px; }
.ag-exp-line { border: 0; padding: 0; }
.ag-exp-item { display: grid; gap: 10px; padding: 26px 4px; border-top: 1px solid var(--border); }
.ag-exp-line .ag-exp-item:last-child { padding-bottom: 26px; }
.ag-exp-meta { font-size: 14px; color: var(--academic-muted); margin: 0; }
.ag-exp-title { font-family: inherit; font-size: 21px; line-height: 1.5; margin: 0; overflow-wrap: anywhere; }
.ag-exp-summary { font-size: 16px; line-height: 1.8; max-width: 76ch; margin: 0; overflow-wrap: anywhere; }
.ag-tag { font-size: 13px; color: var(--text-secondary); padding: 3px 8px; }
.ag-exp-read { display: flex; align-items: center; gap: 10px; color: var(--blue); font-size: 14px; }
.ag-empty { padding: 48px 20px; border: 1px dashed var(--border-strong); border-radius: 10px; color: var(--academic-muted); font-size: 16px; }
.ag-empty h3 { color: var(--primary); font-size: 20px; margin-bottom: 10px; }
.ag-empty p { font-size: 16px; line-height: 1.8; }
.academic-detail-page { padding: 32px; }
.academic-detail-layout { grid-template-columns: minmax(0, 1fr) 208px; gap: 32px; }
.academic-back-link { display: inline-flex; align-items: center; gap: 8px; min-height: 44px; color: var(--blue); font-size: 15px; margin-bottom: 22px; }
.academic-detail-head { margin-bottom: 18px; }
.academic-type-pill { font-size: 13px; letter-spacing: 0; color: var(--academic-muted); }
.academic-detail-meta { flex-wrap: wrap; margin-top: 8px; font-size: 14px; line-height: 1.8; color: var(--academic-muted); }
.academic-detail-meta span:not(:last-child)::after { color: var(--border-strong); }
.academic-detail-code { font-size: 14px; }
.academic-detail-course-name { font-size: 18px; }
.academic-detail-main { overflow-wrap: anywhere; }
.academic-rich-content { font-size: 17px; line-height: 1.9; max-width: 72ch; }
.academic-rich-content h1, .academic-rich-content h2, .academic-detail-block h2 { font-family: inherit; font-size: 24px; line-height: 1.5; margin: 24px 0 14px; }
.academic-rich-content h3 { font-family: inherit; font-size: 20px; line-height: 1.6; }
.academic-rich-content img { max-width: 100%; height: auto; }
.academic-rich-content table { display: block; max-width: 100%; overflow-x: auto; }
.academic-rich-content pre { white-space: pre-wrap; overflow-wrap: anywhere; }
.academic-detail-block { margin-top: 28px; scroll-margin-top: 100px; }
.academic-prereq { margin: 32px 0; padding-top: 8px; }
.academic-resource-list li { font-size: 16px; line-height: 1.8; padding: 8px 0 8px 18px; }
.academic-resource-list li::before { top: 20px; background: var(--academic-muted); }
.academic-course-link { display: inline-flex; align-items: baseline; gap: 6px; color: var(--blue); text-decoration: underline; text-underline-offset: 4px; }
.academic-reference-search { display: inline-flex; align-items: center; min-height: 44px; margin-left: 16px; gap: 6px; color: var(--blue); font-size: 14px; }
.academic-detail-tags span { font-size: 13px; }
.academic-detail-aside { padding-left: 24px; top: 96px; }
.academic-aside-h { font: inherit; font-size: 14px; font-weight: 600; color: var(--primary); letter-spacing: 0; margin: 24px 0 8px; }
.academic-aside-h:first-child { margin-top: 0; }
.academic-aside-nav a { font-size: 14px; line-height: 1.7; min-height: 44px; padding: 10px 0; overflow-wrap: anywhere; }
.academic-toc a { border-bottom: 0; padding: 6px 0; color: var(--academic-muted); }
.academic-section :is(a, button, input, select, [tabindex]):focus-visible,
.academic-detail-section :is(a, button, [tabindex]):focus-visible { outline: 2px solid var(--blue); outline-offset: 4px; }
@media (max-width: 1000px) {
    .ag-majors { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 860px) {
    .academic-detail-layout { grid-template-columns: minmax(0, 1fr); gap: 32px; }
    .academic-detail-aside { position: static; border-left: 0; padding: 24px 0 0; border-top: 1px solid var(--border); }
    .academic-detail-aside .academic-toc { display: flex; flex-wrap: wrap; gap: 0 24px; }
    .academic-detail-aside .academic-aside-nav:not(.academic-toc) { max-width: 480px; }
}
@media (max-width: 600px) {
    .ag-tabs { gap: 12px; justify-content: space-between; }
    .ag-tab { flex: 1; font-size: 15px; line-height: 1.5; }
    .ag-major-orientation { grid-template-columns: minmax(0, 1fr); gap: 20px; }
    .ag-major-orientation > div { display: grid; grid-template-columns: 28px minmax(0, 1fr); gap: 4px 8px; }
    .ag-orientation-number { grid-row: 1 / 3; margin: 3px 0 0; }
    .ag-major-orientation h3 { font-size: 17px; margin-bottom: 0; }
    .ag-major-orientation p { grid-column: 2; font-size: 14px; }
    .ag-majors { grid-template-columns: minmax(0, 1fr); gap: 16px; }
    .ag-major-card { padding: 20px; }
    .ag-major-title { font-size: 19px; }
    .ag-explorer-heading h2 { font-size: 24px; }
    .ag-tools { grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 16px 12px; }
    .ag-search-field { grid-column: 1 / -1; }
    .ag-course-group { grid-template-columns: minmax(0, 1fr); gap: 16px; }
    .ag-stage-heading { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
    .ag-stage-heading h3 { font-size: 21px; }
    .ag-stage-heading > span { margin-top: 0; }
    .ag-course-row { grid-template-columns: minmax(0, 1fr) 20px; gap: 6px 12px; padding: 18px 0; }
    .ag-course-code { grid-column: 1; padding: 0; }
    .ag-course-body { grid-column: 1; grid-row: 2; }
    .ag-course-arrow { grid-column: 2; grid-row: 2; }
    .ag-course-meta { display: block; }
    .ag-exp-title { font-size: 20px; }
    .academic-detail-page { padding: 22px 20px; }
    .academic-rich-content { font-size: 16px; }
    .academic-rich-content h1, .academic-rich-content h2, .academic-detail-block h2 { font-size: 22px; }
    .academic-reference-search { margin-left: 8px; }
}
@media (prefers-reduced-motion: reduce) {
    .academic-section *, .academic-detail-section * { scroll-behavior: auto; transition: none; }
}