/* Long-form teaching, within the existing FraniaCore blue/green system. */
.lesson-layout { grid-template-columns:minmax(0, 760px) minmax(220px, 280px); gap:48px; align-items:start; }
.lesson-layout .reading { min-width:0; }
#written-lesson { overflow-wrap:break-word; }
#written-lesson > :first-child { margin-top:0; }
#written-lesson h2 { margin:44px 0 16px; }
#written-lesson h3 { margin:26px 0 12px; }
#written-lesson p { margin:0 0 18px; }
#written-lesson :is(ul,ol) { padding-left:25px; margin:16px 0 24px; }
#written-lesson li { padding-left:3px; margin:8px 0; }
#written-lesson .example { background:#f4f8fb; border:1px solid #d9e5ec; border-left:4px solid #075080; border-radius:4px; padding:26px; margin:24px 0; min-width:0; }
#written-lesson .example :last-child { margin-bottom:0; }
#written-lesson .example > :first-child { margin-top:0; }
#written-lesson .callout { border-left:4px solid #39835b; background:#f0f8f3; padding:22px 26px; margin:26px 0; }
#written-lesson .callout p:last-child { margin:0; }
#written-lesson blockquote { margin:20px 0; padding:5px 0 5px 22px; border-left:3px solid #abc8d9; }
#written-lesson blockquote p:last-child { margin-bottom:0; }
#written-lesson details { border:1px solid #cadde6; border-radius:5px; padding:0 22px; margin:22px 0; background:#fff; }
#written-lesson summary { cursor:pointer; font-weight:700; padding:18px 0; color:#075080; line-height:1.5; }
#written-lesson details[open] > summary { border-bottom:1px solid #e0e9ee; margin-bottom:20px; }
#written-lesson details > :last-child { margin-bottom:22px; }
#written-lesson details > summary:last-child { margin-bottom:0; }
#written-lesson summary:focus-visible, #written-lesson a:focus-visible { outline:3px solid #39835b; outline-offset:4px; border-radius:2px; }
#written-lesson :is(.lesson-table,.table-wrap) { overflow-x:auto; margin:24px 0; max-width:100%; }
#written-lesson table { border-collapse:collapse; width:100%; font-size:17px; white-space:normal; }
#written-lesson :is(th,td) { padding:12px 15px; text-align:left; vertical-align:top; border:1px solid #d9e5ec; line-height:1.6; }
#written-lesson th { background:#edf4f8; color:#16364b; }
#written-lesson figure { margin:28px 0; }
#written-lesson figcaption { color:#4b6472; margin-top:12px; font-size:16px; line-height:1.6; }
#written-lesson svg[role="img"] { stroke:none; fill:none; display:block; width:100%; max-width:100%; height:auto; margin:22px auto; }
#written-lesson .btn svg { display:inline-block; width:20px; height:20px; flex:0 0 20px; margin:0; stroke:currentColor; fill:none; }
.lesson-side { position:sticky; top:24px; max-height:calc(100vh - 48px); overflow-y:auto; }
#lesson-contents { max-height:45vh; overflow-y:auto; scrollbar-width:thin; }
.lesson-anchor { line-height:1.5; }
.lesson-sequence a { max-width:48%; }
@media(max-width:900px) {
 .lesson-layout { grid-template-columns:minmax(0,1fr); gap:32px; }
 .lesson-side { position:static; max-height:none; order:-1; }
 #lesson-contents { max-height:180px; }
}
@media(max-width:600px) {
 #written-lesson .example { padding:20px 18px; }
 #written-lesson .callout { padding:20px 18px; }
 #written-lesson details { padding:0 16px; }
 #written-lesson :is(th,td) { padding:10px; min-width:100px; }
 #written-lesson h2 { margin-top:36px; }
 .lesson-sequence a { max-width:100%; }
}
@media(prefers-reduced-motion:reduce) {
 .lesson-layout { scroll-behavior:auto; }
}

.mobile-lesson-contents { display:none; }
@media(max-width:900px) {
 .mobile-lesson-contents { display:block; border:1px solid #d9e5ec; border-radius:5px; padding:0 18px; margin:0 0 30px; }
 .mobile-lesson-contents summary { cursor:pointer; font-weight:700; padding:16px 0; color:#075080; }
 .mobile-lesson-contents nav { padding-bottom:16px; max-height:300px; overflow-y:auto; }
 .lesson-side { order:0; }
 .lesson-side > h2:first-child, .lesson-side #lesson-contents, .lesson-side .label-rule { display:none; }
}

/* Original annotated teaching panels. These rules never target button icons. */
#written-lesson .teaching-panel { margin:32px 0; border:1px solid #cbdce5; border-radius:8px; overflow:hidden; background:#fff; }
#written-lesson .teaching-panel > :is(h3,figcaption) { padding:20px 24px; margin:0; }
#written-lesson .teaching-panel :is(.teaching-source,.teaching-question,.teaching-decision,.teaching-reason) { padding:22px 24px; border-top:1px solid #dce7ed; }
#written-lesson .teaching-panel .teaching-source { background:#f3f7fa; }
#written-lesson .teaching-panel .teaching-question { background:#fffaf0; }
#written-lesson .teaching-panel .teaching-decision { background:#edf7f0; }
#written-lesson .teaching-panel p:last-child { margin-bottom:0; }
#written-lesson .teaching-panel mark { background:#fff0a6; color:#17364b; padding:1px 3px; border-radius:2px; }
#written-lesson .teaching-visual { margin:32px 0; }
#written-lesson .teaching-visual img { display:block; width:100%; max-width:760px; height:auto; border:1px solid #e1e8ed; }
#written-lesson .teaching-visual figcaption { padding:12px 0; }
#written-lesson .teaching-visual a { color:#075080; text-decoration:underline; text-underline-offset:3px; }
.question-type-guide { padding:0 24px; border:1px solid #d0dfe7; border-radius:6px; margin:0 0 32px; background:#f6fafc; }
.question-type-guide summary { cursor:pointer; padding:20px 0; font-weight:700; color:#075080; }
.question-type-guide > p { margin:0 0 16px; }
.question-type-links { display:grid; grid-template-columns:repeat(2,minmax(0,1fr)); gap:0 24px; padding-bottom:20px; }
.question-type-links a { color:#075080; padding:12px 0; border-bottom:1px solid #dce7ed; line-height:1.5; }
@media(max-width:600px) {
 #written-lesson .teaching-panel :is(.teaching-source,.teaching-question,.teaching-decision,.teaching-reason) { padding:18px; }
 #written-lesson .teaching-panel > :is(h3,figcaption) { padding:18px; }
 .question-type-guide { padding:0 18px; }
 .question-type-links { grid-template-columns:minmax(0,1fr); }
}

/* Lesson audio clips */
#written-lesson .lesson-clip { background:#f4f8fb; border:1px solid #d9e5ec; border-left:4px solid #075080; border-radius:4px; padding:22px 26px; margin:18px 0; min-width:0; }
#written-lesson .lesson-clip h3 { margin-top:0; }
#written-lesson .lesson-clip audio { width:100%; margin:8px 0; }
#written-lesson .clip-note { font-size:.92em; color:#46606e; }
#written-lesson .clip-items { padding-left:1.4em; }
#written-lesson .clip-item { margin:14px 0; }
#written-lesson .clip-item input { display:inline-block; min-width:12ch; max-width:100%; margin-left:6px; padding:6px 10px; border:1px solid #9bb4c2; border-radius:4px; font:inherit; }
#written-lesson .clip-feedback:not(:empty) { margin-top:6px; padding:8px 12px; border-radius:4px; font-size:.95em; }
#written-lesson .clip-right { background:#e8f5ec; border-left:3px solid #1e7a3d; }
#written-lesson .clip-wrong { background:#fdeeee; border-left:3px solid #b3261e; }
#written-lesson .clip-score { font-weight:600; margin-left:8px; }
#written-lesson .clip-transcript p { margin:6px 0; }
@media (max-width:640px) { #written-lesson .lesson-clip { padding:16px 14px; } #written-lesson .clip-item input { display:block; margin:6px 0 0; width:100%; } }
#written-lesson .clip-image { margin:10px 0; } #written-lesson .clip-image img { width:100%; max-width:640px; height:auto; border:1px solid #cadde6; border-radius:4px; background:#fff; }
#written-lesson .clip-notes, #written-lesson .clip-flow { margin:10px 0; } #written-lesson .clip-flow { padding-left:0; list-style:none; } #written-lesson .clip-flow li { display:block; padding:8px 12px; margin:0 0 14px; background:#fff; border:1px solid #9bb4c2; border-radius:4px; position:relative; } #written-lesson .clip-flow li:not(:last-child)::after { content:"\2193"; position:absolute; left:50%; bottom:-18px; font-weight:700; }
#written-lesson .clip-gap { white-space:nowrap; }

#written-lesson .model-response { background:#fff; border:1px solid #d9e5ec; border-left:4px solid #6c8ea3; border-radius:4px; padding:22px 26px 6px; margin:22px 0 26px; }
#written-lesson .model-response p { margin:0 0 16px; }
#written-lesson mark { background:#fff0a6; color:#17364b; padding:1px 3px; border-radius:2px; }