/* =====================================================================
   Application Formation (Linux) — arbre des études façon gestionnaire de fichiers (classes lt-*)
   Un dossier par étape, un fichier par information, barre latérale de filtres, volet « Propriétés » avec la carte du parcours.
   Police monospace pour l'arbre (├── └──). Mobile : arbre pleine largeur, détails en dessous.
   Animations : transform + opacity seulement, coupées avec « Animations » (body.no-anim) et prefers-reduced-motion.
   ===================================================================== */
.lt {
  --lt-a: var(--accent, #e95420); --lt-aub: #77216f; --lt-teal: #2f9e8f;
  container-type: inline-size; padding: 14px 18px 26px; color: var(--win-fg); font: 13.5px/1.45 var(--font);
}
body.theme-dark .lt { --lt-aub: #c9a5dc; }
.lt *, .lt *::before, .lt *::after { box-sizing: border-box; }
html.lang-rtl .lt { direction: rtl; }
.lt button:focus-visible, .lt .edu-pin:focus-visible { outline: 2px solid var(--lt-a); outline-offset: 2px; }

.lt-head small { font: 700 10.5px var(--mono); letter-spacing: .14em; color: var(--lt-a); }
.lt-head h2 { margin: 2px 0 4px; font-size: 20px; letter-spacing: -.01em; text-transform: none; color: var(--win-fg); }
.lt-head p { margin: 0; max-width: 70ch; color: var(--win-muted); }
.lt-stats { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0 14px; padding: 0; list-style: none; }
.lt-stats li { padding: 2px 10px; border: 1px solid var(--win-line); border-radius: 99px; background: var(--win-soft); font: 12px var(--mono); color: var(--win-muted); }
.lt-stats b { color: var(--lt-a); }
.lt-stats i { margin-inline-start: 4px; padding: 0 6px; border-radius: 99px; background: var(--win-bg); font-style: normal; }

.lt-body { display: grid; grid-template-columns: 168px minmax(0, 1fr) minmax(250px, 330px); gap: 14px; align-items: start; }
/* Barre latérale : filtres */
.lt-side { display: grid; gap: 2px; padding: 8px; border: 1px solid var(--win-line); border-radius: 12px; background: var(--win-soft); position: sticky; top: 6px; }
.lt-side button { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 7px 10px; border: 0; border-radius: 8px; background: none; color: var(--win-fg); font: inherit; font-weight: 600; text-align: start; cursor: pointer; transition: background .15s; }
.lt-side button em { font: normal 600 11px var(--mono); color: var(--win-muted); }
.lt-side button:hover { background: color-mix(in srgb, var(--lt-a) 8%, transparent); }
.lt-side button[aria-pressed="true"] { background: color-mix(in srgb, var(--lt-a) 16%, transparent); box-shadow: inset 3px 0 0 var(--lt-a); }
html.lang-rtl .lt-side button[aria-pressed="true"] { box-shadow: inset -3px 0 0 var(--lt-a); }

/* Arbre */
.lt-tree { min-width: 0; padding: 10px 6px; border: 1px solid var(--win-line); border-radius: 12px; background: var(--win-card); font-family: var(--mono); font-size: 13px; }
.lt-now { margin: 0 8px 6px; color: var(--win-muted); font-size: 12px; }
.lt-now b { color: var(--lt-a); font-weight: 700; }
.lt-dir { animation: ltIn .35s cubic-bezier(.2, .8, .2, 1) backwards; animation-delay: calc(var(--k, 0) * 90ms); }
.lt-dir[hidden] { display: none; }
.lt-row { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 8px; width: 100%; padding: 6px 8px; border: 0; border-radius: 8px; background: none; color: inherit; font: inherit; text-align: start; cursor: pointer; transition: background .15s; }
.lt-row:hover { background: color-mix(in srgb, var(--lt-a) 7%, transparent); }
.lt-dir[aria-selected="true"] > .lt-row { background: color-mix(in srgb, var(--lt-a) 14%, transparent); }
.lt-br { font-style: normal; color: var(--win-muted); white-space: pre; }
.lt-tw { display: inline-block; color: var(--win-muted); width: 1ch; transition: transform .2s cubic-bezier(.2, .8, .2, 1); }
.lt-dir.is-open > .lt-row .lt-tw { transform: rotate(90deg); }
html.lang-rtl .lt-tw { transform: scaleX(-1); }
html.lang-rtl .lt-dir.is-open > .lt-row .lt-tw { transform: scaleX(-1) rotate(90deg); }
.lt-folder { position: relative; display: inline-block; width: 18px; height: 13px; border-radius: 2px 2px 3px 3px; background: linear-gradient(180deg, #b15cb0, var(--lt-aub)); align-self: center; }
.lt-folder::before { content: ''; position: absolute; left: 0; top: -3px; width: 8px; height: 4px; border-radius: 2px 2px 0 0; background: #8f3d8c; }
.lt-dir[data-type="certification"] .lt-folder { background: linear-gradient(180deg, #f08a5d, var(--lt-a)); }
.lt-dir[data-type="certification"] .lt-folder::before { background: #c9461a; }
.lt-dir[data-type="course"] .lt-folder { background: linear-gradient(180deg, #4cc2b0, var(--lt-teal)); }
.lt-dir[data-type="course"] .lt-folder::before { background: #1f7a6e; }
.lt-row b { font-family: var(--font); font-weight: 700; font-size: 14px; }
.lt-row small { color: var(--win-muted); font-size: 12px; unicode-bidi: isolate; }
.lt-st { margin-inline-start: auto; padding: 0 8px; border: 1px solid var(--win-line); border-radius: 99px; font: normal 600 11px var(--mono); color: var(--win-muted); }
.lt-st.is-live { border-color: var(--lt-a); color: var(--lt-a); }
.lt-files { display: none; margin: 0; padding: 0; list-style: none; }
.lt-dir.is-open > .lt-files { display: block; animation: ltFade .25s ease both; }
.lt-files li { display: flex; align-items: baseline; gap: 8px; padding: 1px 8px; }
.lt-dir.is-open > .lt-files li { animation: ltFade .25s ease backwards; }
.lt-dir.is-open > .lt-files li:nth-child(2) { animation-delay: 40ms; } .lt-dir.is-open > .lt-files li:nth-child(3) { animation-delay: 80ms; } .lt-dir.is-open > .lt-files li:nth-child(4) { animation-delay: 120ms; } .lt-dir.is-open > .lt-files li:nth-child(n+5) { animation-delay: 160ms; }
.lt-fn { flex: none; min-width: 15ch; color: var(--win-muted); }
.lt-fv { min-width: 0; overflow-wrap: anywhere; font-family: var(--font); unicode-bidi: isolate; }
.lt-none { margin: 14px 8px; color: var(--win-muted); font-family: var(--font); }
.lt-count { margin: 10px 8px 0; font-size: 11px; color: var(--win-muted); }
.lt-count em { font-style: normal; }

/* Volet Propriétés */
.lt-props { display: grid; gap: 12px; min-width: 0; }
.lt-pbox, .lt-mapbox { padding: 14px 16px; border: 1px solid var(--win-line); border-radius: 12px; background: var(--win-card); }
.lt-pbox h3 { margin: 0 0 4px; font-size: 17px; line-height: 1.25; text-transform: none; letter-spacing: 0; color: var(--win-fg); }
.lt-kick { margin: 0 0 10px; font: 11.5px var(--mono); letter-spacing: .04em; text-transform: uppercase; color: var(--lt-a); }
.lt-dl { display: grid; grid-template-columns: max-content 1fr; gap: 3px 14px; margin: 0 0 10px; font-size: 13px; }
.lt-dl dt { color: var(--win-muted); font-family: var(--mono); font-size: 12px; }
.lt-dl dd { margin: 0; unicode-bidi: isolate; }
.lt-text { margin: 0 0 10px; }
.lt-hook { margin: 0 0 10px; padding: 8px 12px; border-inline-start: 3px solid var(--lt-a); background: var(--win-soft); border-radius: 0 8px 8px 0; display: grid; gap: 2px; }
.lt-hook span { color: var(--win-muted); font-size: 12.5px; }
.lt-prog { margin: 0 0 8px; color: var(--win-muted); font-size: 12.5px; }
.lt-cert { display: inline-block; padding: 6px 12px; border: 1px solid var(--lt-a); border-radius: 8px; color: var(--lt-a); font-weight: 700; font-size: 12.5px; text-decoration: none; }
.lt-cert:hover { background: color-mix(in srgb, var(--lt-a) 12%, transparent); }
.lt-hint { margin: 0; color: var(--win-muted); }
.lt-mapbox h4 { margin: 0 0 8px; font: 700 11px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--win-muted); }

/* Carte du parcours (SVG fourni par education-view.js) */
.lt .edu-map { margin: 0; }
.lt .edu-map svg { display: block; width: 100%; height: auto; direction: ltr; border-radius: 10px; background: radial-gradient(circle at 25% 30%, color-mix(in srgb, var(--lt-a) 9%, transparent), transparent 60%), var(--win-soft); }
.lt .edu-map figcaption { margin-top: 7px; font: 10.5px var(--mono); color: var(--win-muted); }
.lt .edu-map-grid line { stroke: var(--win-line); stroke-width: .6; stroke-dasharray: 1.5 4; }
.lt .edu-leg-bg { fill: none; stroke: var(--win-line); stroke-width: 2; stroke-dasharray: 3 5; }
.lt .edu-leg { fill: none; stroke: var(--lt-a); stroke-width: 2.4; stroke-linecap: round; transition: stroke-width .2s; }
.lt .edu-leg.is-hot { stroke-width: 3.8; }
.lt .edu-pin { cursor: pointer; outline: none; }
.lt .edu-pin-halo { fill: var(--lt-a); opacity: 0; transform-box: fill-box; transform-origin: center; transform: scale(.6); transition: opacity .25s, transform .35s cubic-bezier(.2, .8, .2, 1); }
.lt .edu-pin-dot { fill: var(--win-card); stroke: var(--lt-aub); stroke-width: 3; transform-box: fill-box; transform-origin: center; transition: transform .25s, stroke .2s; }
.lt .edu-pin-name { font: 700 15px var(--font); fill: var(--win-fg); }
.lt .edu-pin-sub { font: 11px var(--mono); fill: var(--win-muted); }
.lt .edu-pin.is-hot .edu-pin-halo, .lt .edu-pin:hover .edu-pin-halo { opacity: .28; transform: scale(1.15); }
.lt .edu-pin.is-hot .edu-pin-dot, .lt .edu-pin:hover .edu-pin-dot { transform: scale(1.35); stroke: var(--lt-a); }
html.lang-rtl .lt .edu-map, html.lang-rtl .lt .edu-map svg { direction: ltr; }

@keyframes ltIn { from { opacity: 0; transform: translateX(-8px); } }
@keyframes ltFade { from { opacity: 0; transform: translateY(-4px); } }
/* Carte du parcours : le trajet se trace une seule fois, étape après étape (pastille puis tronçon) */
.lt-mapbox.trace .edu-pin-dot { animation: ltPin .35s cubic-bezier(.2, .8, .2, 1) backwards; animation-delay: calc(var(--i, 0) * 320ms); }
.lt-mapbox.trace .edu-leg { animation: ltLeg .45s ease backwards; animation-delay: calc(var(--i, 0) * 320ms + 160ms); }
@keyframes ltPin { from { opacity: 0; transform: scale(.2); } }
@keyframes ltLeg { from { opacity: 0; } }
html.lang-rtl .lt-dir { animation-name: ltInRtl; }
@keyframes ltInRtl { from { opacity: 0; transform: translateX(8px); } }

/* Fenêtre étroite ou mobile : filtres en ligne, arbre pleine largeur, propriétés en dessous */
@container (max-width: 1010px) { .lt-body { grid-template-columns: 168px minmax(0, 1fr); } .lt-props { grid-column: 1 / -1; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); } }
@container (max-width: 760px) {
  .lt-body { grid-template-columns: minmax(0, 1fr); }
  .lt-props { grid-template-columns: minmax(0, 1fr); }
  .lt-side { position: static; display: flex; flex-wrap: wrap; }
  .lt-side button { flex: 1 1 auto; }
}
@container (max-width: 480px) { .lt { padding: 10px 10px 22px; } .lt-fn { min-width: 12ch; } .lt-row small, .lt-st { margin-inline-start: 0; } }
@media (prefers-reduced-motion: reduce) { .lt *, .lt *::before, .lt *::after { animation: none !important; transition: none !important; } }
body.no-anim .lt *, body.no-anim .lt *::before, body.no-anim .lt *::after { animation: none !important; transition: none !important; }

.lt-type i { font-style: normal; margin-inline-end: 5px; }