/* AI practice follows Growth Canvas tokens; the six-layer map is the learning entry. */
#ai-training { --ai-accent: #08786e; padding-top: 36px; }
.ai-intro { display: grid; grid-template-columns: minmax(0,1fr) auto; align-items: end; gap: 32px; }
.ai-intro h1 { margin: 12px 0; font-size: clamp(28px,3vw,42px); letter-spacing: -1px; line-height: 1.3; }
.ai-intro h1 span { display: block; margin-top: 8px; color: var(--ai-accent); font-size: clamp(18px,1.8vw,25px); font-weight: 500; letter-spacing: 0; }
.ai-intro p { max-width: 670px; margin: 12px 0 0; color: var(--muted); font-size: 14px; }
.ai-intro .eyebrow { font-size: 10px; }
.ai-course-meta { display: grid; gap: 7px; padding: 0 0 0 18px; border-left: 2px solid var(--teal); color: var(--muted); font-size: 12px; }
.ai-course-meta strong { color: var(--ink); font-size: 14px; }
.ai-layer-map { display: grid; grid-template-columns: repeat(6,minmax(0,1fr)); margin-top: 26px; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; background: var(--surface); }
.ai-layer-map button { min-width: 0; padding: 16px 14px; text-align: left; border: 0; border-right: 1px solid var(--line); background: transparent; color: var(--ink); }
.ai-layer-map button:last-child { border-right: 0; }
.ai-layer-map button:hover { background: var(--surface-soft); }
.ai-layer-map strong { display: block; font: 500 13px var(--mono); }
.ai-layer-map span { display: block; margin-top: 4px; color: var(--muted); font-size: 11px; }
.ai-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; margin-top: 18px; }
.ai-toolbar .primary-button { font-size: 12px; padding: 10px 13px; }
.ai-toolbar #aiProgressText { margin-left: auto; font-size: 12px; font-weight: 700; color: var(--ai-accent); }
.ai-button { padding: 9px 12px; border: 1px solid var(--line); border-radius: 7px; background: var(--surface); color: var(--ink); font-size: 12px; }
.ai-button:hover { border-color: var(--ai-accent); }
.ai-note { color: var(--muted); font-size: 12px; line-height: 1.8; }
#ai-training > .ai-note { margin: 13px 0 0; }
.ai-status { position: sticky; top: var(--topbar-height); z-index: 9; min-height: 0; color: var(--ai-accent); background: var(--paper); font-size: 12px; }
.ai-status:not(:empty) { padding: 8px 0; }
.ai-layout { display: grid; grid-template-columns: 242px minmax(0,1fr); gap: 28px; margin-top: 24px; align-items: start; }
.ai-catalog { position: sticky; top: calc(var(--topbar-height) + 36px); max-height: calc(100dvh - var(--topbar-height) - 58px); overflow-y: auto; overscroll-behavior: contain; padding: 0 10px 14px 0; scrollbar-width: thin; }
.ai-catalog > label { display: block; font-weight: 700; font-size: 12px; margin: 0 0 7px; }
#ai-training input[type=search], #ai-training select, #ai-training textarea, .ai-builder input { width: 100%; padding: 10px 11px; border: 1px solid var(--line); border-radius: 7px; color: var(--ink); background: var(--surface); font: inherit; font-size: 13px; }
#ai-training select { margin-top: 8px; }
#ai-training textarea { line-height: 1.8; resize: vertical; }
#ai-training select:focus-visible, #ai-training textarea:focus-visible, #ai-training summary:focus-visible { outline: 3px solid var(--teal); outline-offset: 3px; }
.ai-course-group h3 { margin: 18px 0 6px; font-size: 11px; color: var(--muted); font-weight: 600; }
.ai-course-link { display: flex; width: 100%; gap: 9px; padding: 11px 9px; margin: 2px 0; border: 1px solid transparent; border-radius: 8px; text-align: left; color: var(--ink); background: transparent; }
.ai-course-link strong { display: block; font-size: 12px; font-weight: 500; line-height: 1.6; }
.ai-course-link small { display: block; margin-top: 4px; font-size: 10px; color: var(--muted); }
.ai-course-number { padding-top: 2px; font: 500 11px var(--mono); color: var(--muted); }
.ai-course-link:hover { background: var(--surface-soft); }
.ai-course-link.is-active { background: var(--surface); border-color: var(--line); box-shadow: inset 3px 0 var(--ai-accent); }
.ai-course-link.is-active .ai-course-number { color: var(--ai-accent); }
.ai-reader { min-width: 0; padding: 27px 30px; border: 1px solid var(--line); border-radius: 13px; background: var(--surface); }
.ai-lesson-head h2 { margin: 13px 0 12px; font-size: clamp(22px,2.1vw,30px); line-height: 1.45; letter-spacing: -.4px; scroll-margin-top: 110px; }
.ai-lesson-head > p:not(.eyebrow) { margin-bottom: 16px; color: var(--muted); font-size: 14px; }
.ai-inline-actions { display: flex; flex-wrap: wrap; gap: 16px; }
.ai-inline-actions button, .ai-text-link { border: 0; background: transparent; color: var(--ai-accent); padding: 0; font-size: 12px; text-align: left; text-decoration: underline; text-underline-offset: 4px; }
.ai-toc { display: flex; flex-wrap: wrap; gap: 6px; padding: 20px 0; border-bottom: 1px solid var(--line); }
.ai-toc button { border: 0; border-radius: 5px; background: var(--surface-soft); color: var(--muted); font-size: 11px; padding: 6px 8px; }
.ai-toc button:hover { color: var(--ink); }
.ai-block { padding: 25px 0 0; scroll-margin-top: 125px; }
.ai-block h3 { margin: 0 0 13px; font-size: 18px; }
.ai-block h4 { font-size: 14px; margin: 18px 0 7px; }
.ai-block p { font-size: 14px; line-height: 1.95; overflow-wrap: anywhere; }
.ai-block .ai-note { font-size: 12px; }
.ai-concepts, .ai-pitfalls { display: grid; gap: 12px; margin: 0; }
.ai-concepts > div { padding: 0 0 12px; border-bottom: 1px solid var(--line); }
.ai-concepts dt, .ai-pitfalls dt { font-size: 13px; font-weight: 700; }
.ai-concepts dd, .ai-pitfalls dd { margin: 5px 0 0; font-size: 13px; color: var(--muted); line-height: 1.9; }
.ai-case { padding: 18px 20px; margin-top: 25px; background: var(--surface-soft); border-left: 3px solid var(--teal); border-radius: 0 8px 8px 0; }
.ai-case .eyebrow { font-size: 10px; margin: 0 0 9px; }
.ai-case p:last-child { margin-bottom: 0; }
.ai-block-heading { display: flex; flex-wrap: wrap; gap: 8px; align-items: baseline; justify-content: space-between; }
.ai-block-heading span { color: var(--muted); font-size: 11px; }
.ai-steps { list-style: none; padding: 0; margin: 0; }
.ai-steps > li { position: relative; padding: 22px 0; border-bottom: 1px solid var(--line); }
.ai-step-heading { display: flex; align-items: baseline; gap: 12px; }
.ai-step-heading > span { color: var(--ai-accent); font: 500 15px var(--mono); }
.ai-step-heading h4 { font-size: 16px; margin: 0; }
.ai-expected { border-left: 2px solid var(--teal); margin: 15px 0; padding: 1px 0 1px 12px; }
.ai-expected strong { color: var(--ai-accent); font-size: 11px; }
.ai-expected p { margin: 3px 0; color: var(--muted); font-size: 13px; }
.ai-step-check { display: flex; align-items: center; gap: 9px; width: fit-content; padding: 8px 0; font-size: 12px; cursor: pointer; }
.ai-step-check input, .ai-quiz input { width: 17px; height: 17px; flex-shrink: 0; accent-color: var(--ai-accent); }
.ai-code { min-width: 0; margin: 14px 0; overflow: hidden; border: 1px solid var(--line); border-radius: 7px; background: var(--surface-soft); }
.ai-code > div { display: flex; justify-content: space-between; gap: 12px; align-items: center; padding: 9px 12px; border-bottom: 1px solid var(--line); color: var(--muted); font-size: 10px; }
.ai-code > div span { overflow-wrap: anywhere; }
.ai-code button { flex-shrink: 0; border: 0; background: transparent; color: var(--ai-accent); font-size: 11px; padding: 3px; }
.ai-code pre { max-width: 100%; max-height: 540px; overflow: auto; margin: 0; padding: 14px; font: 12px/1.9 var(--mono),var(--font); tab-size: 2; }
.ai-code code { font: inherit; white-space: pre; }
.ai-file summary, .ai-answer summary { padding: 11px 0; color: var(--ai-accent); font-size: 12px; cursor: pointer; overflow-wrap: anywhere; }
.ai-result { padding: 15px; border: 1px solid var(--line); border-radius: 7px; }
.ai-pitfalls > div { padding-left: 12px; border-left: 2px solid var(--coral); }
.ai-answer { padding: 0 13px; background: var(--surface-soft); border-radius: 7px; }
.ai-answer p { padding-bottom: 13px; }
.ai-quiz { min-width: 0; padding: 17px; margin: 27px 0; border: 1px solid var(--line); border-radius: 8px; }
.ai-quiz legend { padding: 0 7px; font-size: 14px; font-weight: 700; }
.ai-quiz label { display: flex; gap: 10px; align-items: center; padding: 9px 0; font-size: 13px; cursor: pointer; }
.ai-quiz .ai-button { margin-top: 10px; }
.ai-quiz p { color: var(--ai-accent); font-size: 12px; }
.ai-notes-label { display: block; margin-bottom: 9px; font-size: 14px; font-weight: 700; }
.ai-notes-label small { display: block; margin-top: 4px; color: var(--muted); font-size: 11px; font-weight: 400; }
.ai-sources { margin-bottom: 22px; }
.ai-sources p, .ai-sources li { font-size: 12px; color: var(--muted); }
.ai-sources a { color: var(--ai-accent); text-decoration: underline; text-underline-offset: 3px; }
.ai-sources ul { padding-left: 20px; }
.ai-completion { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; padding-top: 18px; border-top: 1px solid var(--line); }
.ai-completion p { flex: 1 1 200px; font-size: 12px; color: var(--muted); }
.ai-completion .primary-button { font-size: 12px; }
#ai-training button:disabled { opacity: .5; cursor: not-allowed; transform: none; box-shadow: none; }
.ai-course-pager { display: flex; justify-content: space-between; gap: 10px; margin-top: 20px; }
.ai-builder { margin-top: 32px; padding: 28px; border: 1px solid var(--line); border-radius: 13px; background: var(--surface); scroll-margin-top: 120px; }
.ai-builder h2 { font-size: 25px; margin: 10px 0; }
.ai-builder p { max-width: 800px; font-size: 13px; color: var(--muted); }
.ai-builder-fields { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; margin: 22px 0; }
.ai-builder label { display: grid; align-content: start; gap: 7px; color: var(--ink); font-size: 13px; font-weight: 600; }
.ai-builder small { color: var(--muted); font-size: 11px; font-weight: 400; }
.ai-progress-panel { display: flex; flex-wrap: wrap; gap: 20px; justify-content: space-between; align-items: center; grid-column: 1/-1; margin-top: 20px; padding: 22px; border: 1px solid var(--line); border-radius: 12px; background: var(--surface); }
.ai-progress-panel h2 { font-size: 22px; margin: 9px 0; }
.ai-progress-panel p:not(.eyebrow) { color: var(--muted); font-size: 13px; }
body.night #ai-training { --ai-accent: #70d8c8; }
@media (max-width: 1200px) { .ai-layout { grid-template-columns: 210px minmax(0,1fr); gap: 18px; } .ai-reader { padding: 23px; } .ai-intro { grid-template-columns: 1fr; gap: 15px; } .ai-course-meta { display: flex; flex-wrap: wrap; gap: 15px; } }
@media (max-width: 850px) { .ai-layout { grid-template-columns: 1fr; } .ai-catalog { position: static; max-height: 350px; padding: 14px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); } .ai-layer-map { grid-template-columns: repeat(3,1fr); } .ai-layer-map button:nth-child(-n+3) { border-bottom: 1px solid var(--line); } .ai-layer-map button:nth-child(3) { border-right: 0; } .ai-toolbar #aiProgressText { width: 100%; margin-left: 0; } }
@media (max-width: 560px) { #ai-training { padding: 25px 16px 48px; } .ai-reader { padding: 18px 15px; } .ai-builder { padding: 20px 15px; } .ai-builder-fields { grid-template-columns: 1fr; } .ai-case { padding: 16px 13px; } .ai-lesson-head h2 { font-size: 23px; } .ai-intro h1 { font-size: 29px; } .ai-course-meta { display: grid; gap: 5px; } .ai-code pre { font-size: 11px; } .ai-course-pager .ai-button { font-size: 11px; } }
@media print { .ai-catalog, .ai-builder, .ai-toolbar, .ai-toc, .ai-layer-map, .ai-inline-actions, .ai-step-check, .ai-course-pager, .ai-completion { display: none; } .ai-layout { display: block; } .ai-reader { border: 0; } .ai-code pre { max-height: none; white-space: pre-wrap; } }
body.night #ai-training .primary-button, body.night .ai-progress-panel .primary-button { background: #70d8c8; color: #10233a; }
body.night .nav-link[data-target="ai-training"].active { background: var(--surface-soft); color: var(--ink); }
.ai-structure h4 { margin: 28px 0 12px; font-size: 16px; }
.ai-structure h5 { margin: 0 0 10px; font-size: 14px; line-height: 1.6; }
.ai-structure h5 span { display: inline-block; margin-left: 7px; padding: 2px 7px; border: 1px solid var(--line); border-radius: 4px; color: var(--muted); font-size: 11px; font-weight: 500; }
.ai-structure-parts { display: grid; gap: 10px; }
.ai-structure-parts article, .ai-structure-variants article { padding: 16px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); min-width: 0; }
.ai-structure-parts p, .ai-structure-variants p { margin: 6px 0 0; }
.ai-structure-variants { display: grid; grid-template-columns: repeat(auto-fit,minmax(180px,1fr)); gap: 10px; }
.ai-structure li { margin: 10px 0; line-height: 1.8; }
.ai-structure a { overflow-wrap: anywhere; }
.ai-source-study { margin: 20px 0; padding: 4px 18px 14px; border-left: 3px solid var(--ai-accent); background: var(--surface-soft); }
@media(max-width:560px) { .ai-structure-variants { grid-template-columns: 1fr; } }