/* Successfied — Learn modules (loaded only on /learn pages). Tokens come from app.css. */
.lw-card { display: flex; flex-direction: column; gap: 6px; }
.lw-count { color: var(--accent); font-weight: 600; }
.lw-stack { display: grid; gap: 12px; }
.lw-stack h3, .lw-zone h3, .lw-pyr-item h3 { font-size: 1.05rem; margin: 0 0 .4em; }
.lw-tip { background: var(--accent-soft); border-radius: var(--r, 10px); padding: 8px 12px; margin: .6em 0 0; }
.lw-terms dt { font-weight: 700; margin-top: .6em; }
.lw-terms dd { margin: .2em 0 0; color: var(--text-soft); }
.chip { border: 1px solid var(--line-strong); background: var(--surface); color: var(--text); border-radius: 999px; padding: 6px 12px; font: inherit; font-size: .9rem; cursor: pointer; }
.chip.on { background: var(--accent); border-color: var(--accent); color: var(--on-accent); }
.pill.on { outline: 2px solid var(--accent); }

/* age slider */
.lw-age-control { margin-bottom: 14px; }
.lw-age-control input[type=range] { width: 100%; accent-color: var(--accent); min-height: 32px; }
.lw-age-scale { display: flex; font-size: .75rem; color: var(--text-soft); gap: 2px; }
.lw-age-scale span { border-top: 3px solid var(--line-strong); padding-top: 4px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.lw-js .lw-stage { display: none; }
.lw-js .lw-stage.on { display: block; border-color: var(--accent); }

/* ladder */
.lw-ladder { display: grid; gap: 14px; max-width: 640px; }
.lw-level { border-left: 4px solid var(--accent); padding-left: 12px; display: grid; gap: 8px; }
.lw-level-name { font-weight: 700; margin: 0; color: var(--accent-strong); }
.lw-rung { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; }
.lw-rung summary { cursor: pointer; font-weight: 600; list-style: none; display: flex; gap: 10px; align-items: center; }
.lw-rung summary::-webkit-details-marker { display: none; }
.lw-n { display: inline-grid; place-items: center; width: 28px; height: 28px; border-radius: 50%; background: var(--accent); color: var(--on-accent); font-size: .9rem; flex: none; }
.lw-rung[open] { border-color: var(--accent); }

/* zones and pyramid */
.lw-zones, .lw-pyramid { display: grid; gap: 16px; align-items: start; }
@media (min-width: 760px) { .lw-zones, .lw-pyramid { grid-template-columns: minmax(260px, 340px) 1fr; } }
.lw-zones-svg, .lw-pyr-svg { width: 100%; max-width: 340px; height: auto; }
.lw-ring { fill: var(--surface-2); stroke: var(--line-strong); stroke-width: 2; cursor: pointer; }
.lw-ring-0 { fill: var(--accent-soft); }
.lw-ring.on { fill: var(--accent); }
.lw-ring:focus-visible, .lw-layer:focus-visible, .lw-part:focus-visible { outline: 3px solid var(--focus); }
.lw-ring-label, .lw-layer-label { font-size: 12px; fill: var(--text); font-weight: 600; }
.lw-ring.on + .lw-ring-label, .lw-layer.on + .lw-layer-label { fill: var(--on-accent); }
.lw-layer { fill: var(--surface-2); stroke: var(--surface); stroke-width: 3; cursor: pointer; }
.lw-layer.on { fill: var(--accent); }
.lw-js .lw-zone, .lw-js .lw-pyr-item { display: none; }
.lw-js .lw-zone.on, .lw-js .lw-pyr-item.on { display: block; }
.lw-verbs { gap: 6px; }

/* cards */
.lw-flip summary { cursor: pointer; }
.lw-flip[open] { border-color: var(--accent); }

/* scenarios */
.lw-scen { display: grid; gap: 16px; }
.lw-sit { font-size: 1.05rem; }
.lw-choices { display: grid; gap: 8px; }
.lw-pick { width: 100%; text-align: left; padding: 12px 14px; border: 1px solid var(--line-strong); background: var(--surface); color: var(--text); border-radius: 10px; font: inherit; cursor: pointer; min-height: 44px; }
.lw-pick:hover { border-color: var(--accent); }
.lw-fb { margin: 6px 2px 0; font-size: .95rem; }
.done .lw-choice.best .lw-pick { border-color: var(--correct); background: var(--correct-bg); }
.done .lw-choice.picked:not(.best) .lw-pick { border-color: var(--wrong); background: var(--wrong-bg); }
.done .lw-choice.best .lw-fb::before { content: "✓ "; color: var(--correct); font-weight: 700; }
.done .lw-choice.picked:not(.best) .lw-fb::before { content: "✗ "; color: var(--wrong); font-weight: 700; }
.lw-principle { margin-top: 10px; }
.lw-principle summary { cursor: pointer; font-weight: 600; color: var(--accent-strong); }

/* splitter */
.lw-split-tools { margin-bottom: 12px; align-items: center; }
.lw-split-tools select { padding: 8px; border-radius: 8px; border: 1px solid var(--line-strong); background: var(--surface); color: var(--text); font: inherit; }
.lw-words { display: flex; flex-wrap: wrap; gap: 8px; }
.lw-word-btn { font-size: 1.1rem; cursor: pointer; border: 1px solid var(--line-strong); min-height: 40px; }
.lw-word-detail { margin-top: 6px; }
.lw-js .lw-word-detail { display: none; }
.lw-js .lw-word.open { flex-basis: 100%; }
.lw-js .lw-word.open .lw-word-detail { display: block; }
.lw-word.open .lw-word-btn { background: var(--accent); color: var(--on-accent); border-color: var(--accent); }
.lw-word.hide-ans .lw-ans { visibility: hidden; }
.lw-word-title { font-size: 1.15rem; }

/* diagram */
.lw-dia-tools { margin-bottom: 10px; align-items: center; }
.lw-dia-wrap { display: grid; gap: 16px; }
@media (min-width: 760px) { .lw-dia-wrap { grid-template-columns: minmax(280px, 1fr) 1fr; } }
.lw-dia-fig { margin: 0; }
.lw-dia-fig svg { width: 100%; height: auto; max-width: 520px; }
.lw-dia-list { padding-left: 1.3em; }
.lw-dia-list li { margin-bottom: 6px; }
.lw-js .lw-dia-desc { display: none; }
.lw-js .lw-dia-list li.on .lw-dia-desc { display: block; }
.lw-dia-list li.on .lw-dia-label { font-weight: 700; color: var(--accent-strong); }
.lw-part { cursor: pointer; }
.lw-hl { stroke: var(--focus) !important; stroke-width: 4 !important; }
.quiz .lw-dia-list { visibility: hidden; }
.quiz .lw-dia-list li.on { visibility: visible; }

/* groups */
.lw-g-search { max-width: 420px; }
.lw-g-list { display: grid; gap: 10px; }
@media (min-width: 760px) { .lw-g-list { grid-template-columns: 1fr 1fr; } }
.lw-g summary { cursor: pointer; }
.lw-g.hit { border-color: var(--accent); }
.lw-members { gap: 6px; margin-top: 10px; }

/* timeline */
.lw-tl-filter { margin-bottom: 12px; }
.lw-tl-list { list-style: none; padding: 0; margin: 0; border-left: 3px solid var(--line-strong); }
.lw-tl-item { display: grid; grid-template-columns: 92px 1fr; gap: 12px; padding: 10px 0 10px 14px; position: relative; }
.lw-tl-item::before { content: ""; position: absolute; left: -8px; top: 16px; width: 13px; height: 13px; border-radius: 50%; background: var(--accent); }
.lw-tl-year { font-weight: 700; color: var(--accent-strong); }
@media (max-width: 420px) { .lw-tl-item { grid-template-columns: 1fr; gap: 2px; } }

/* flashcards */
.fc-card { display: block; width: 100%; min-height: 150px; text-align: left; font: inherit; color: var(--text); cursor: pointer; position: relative; }
.fc-card .fc-back { display: none; }
.fc-card.flipped .fc-front { display: none; }
.fc-card.flipped .fc-back { display: block; }
.fc-card.flipped { border-color: var(--accent); background: var(--accent-soft); }
.fc-front { font-weight: 600; font-size: 1.05rem; display: block; }
.fc-back { display: block; }
.fc-hint { display: block; margin-top: 12px; }
.fc-grade .btn { flex: 1; }