/* ==========================================================================
Kolytica Formation · socle visuel de l'app learning mobile
Issue #172, lot F1
--------------------------------------------------------------------------
CONTRAT CSS stable consommé par les lots F2 à F4. Présentation uniquement.
Référence : docs/LEARNING_UX_GUIDELINES.md.
Chargement attendu dans formations/en-ligne.html, après la feuille learning :
Dépendance : assets/css/kolytica-learning.css. Les tokens de marque
--learn-teal, --learn-navy, --learn-gold, --learn-line, --learn-white,
--learn-ivory, --learn-ink et --learn-slate restent la source de vérité.
Ce fichier ne redéfinit aucun token de marque. Toutes les classes publiques
sont préfixées .lapp- pour éviter les collisions avec .learn-, .dashboard-
et .app-.
COMPOSANTS STABLES :
.lapp-root Racine optionnelle et repère de l'espace app.
.lapp-screen Écran mobile, min-height 100dvh et safe-areas.
.lapp-tabbar Navigation basse flottante, mobile uniquement.
.lapp-tabbar-main Pilule contenant 3 ou 4 onglets.
.lapp-tabbar-item Onglet icône + libellé, actif via .is-active ou
aria-current="page".
.lapp-tabbar-search Bouton recherche circulaire séparé à droite.
.lapp-chips Rangée de sujets scroll-x avec snap et fondu latéral.
.lapp-chip Chip tactile, active via .is-active ou aria-pressed.
.lapp-rail-section Section de carrousel avec en-tête.
.lapp-rail Rail horizontal scroll-x avec snap.
.lapp-card Carte de cours visuelle.
.lapp-sheet Bottom-sheet accessible, masquée par [hidden].
.lapp-scrim Voile de la bottom-sheet, masqué par [hidden].
.lapp-skeleton État de chargement animé, statique si motion réduite.
.lapp-snackbar Message bref aria-live, masqué par [hidden].
MOTION : 150ms, 250ms et 400ms avec cubic-bezier(.2,.8,.2,1).
Le bloc final prefers-reduced-motion neutralise tout le namespace .lapp-.
========================================================================== */
:root{--lapp-vh:100vh;--lapp-safe-top:env(safe-area-inset-top,0px);--lapp-safe-right:env(safe-area-inset-right,0px);--lapp-safe-bottom:env(safe-area-inset-bottom,0px);--lapp-safe-left:env(safe-area-inset-left,0px);--lapp-r-sm:12px;--lapp-r-md:16px;--lapp-r-lg:22px;--lapp-r-sheet:20px;--lapp-r-pill:999px;--lapp-shadow-card:0 16px 38px rgba(20,34,79,.11);--lapp-shadow-card-hover:0 20px 46px rgba(20,34,79,.16);--lapp-shadow-tabbar:0 18px 46px rgba(20,34,79,.20);--lapp-shadow-sheet:0 -18px 52px rgba(20,34,79,.22);--lapp-shadow-chip:0 9px 22px rgba(11,111,98,.19);--lapp-z-tabbar:90;--lapp-z-snackbar:110;--lapp-z-scrim:120;--lapp-z-sheet:130;--lapp-t-fast:150ms;--lapp-t-base:250ms;--lapp-t-slow:400ms;--lapp-ease:cubic-bezier(.2,.8,.2,1);--lapp-tap:44px;--lapp-pad:clamp(16px,4.8vw,26px);--lapp-tabbar-space:calc(88px + var(--lapp-safe-bottom));}
@supports (height:100dvh){:root{--lapp-vh:100dvh;}
}
.lapp-root{position:relative;min-width:0;color:var(--learn-ink);}
.lapp-screen{position:relative;display:flex;width:100%;min-height:var(--lapp-vh);flex-direction:column;padding:calc(16px + var(--lapp-safe-top)) calc(var(--lapp-pad) + var(--lapp-safe-right)) var(--lapp-tabbar-space) calc(var(--lapp-pad) + var(--lapp-safe-left));}
.lapp-screen--compact{min-height:auto;}
.lapp-screen--flush{padding-right:var(--lapp-safe-right);padding-left:var(--lapp-safe-left);}
.lapp-screen--center{justify-content:center;}
.lapp-tabbar{position:fixed;right:0;bottom:0;left:0;z-index:var(--lapp-z-tabbar);display:flex;align-items:center;justify-content:center;gap:10px;padding:0 calc(12px + var(--lapp-safe-right)) calc(12px + var(--lapp-safe-bottom)) calc(12px + var(--lapp-safe-left));pointer-events:none;}
.lapp-tabbar-main{display:grid;width:min(100%,338px);min-width:0;grid-auto-columns:minmax(58px,1fr);grid-auto-flow:column;align-items:stretch;gap:3px;padding:5px;border:1px solid rgba(231,225,210,.94);border-radius:var(--lapp-r-pill);background:rgba(255,255,255,.94);box-shadow:var(--lapp-shadow-tabbar);backdrop-filter:blur(18px);-webkit-backdrop-filter:blur(18px);pointer-events:auto;}
.lapp-tabbar-item{display:grid;min-width:var(--lapp-tap);min-height:56px;place-items:center;align-content:center;gap:2px;padding:5px 7px;border:0;border-radius:var(--lapp-r-pill);color:var(--learn-slate);background:transparent;cursor:pointer;font:inherit;font-size:.82rem;font-weight:800;line-height:1.05;text-align:center;text-decoration:none;-webkit-tap-highlight-color:transparent;transition:color var(--lapp-t-fast) var(--lapp-ease),background-color var(--lapp-t-fast) var(--lapp-ease),transform var(--lapp-t-fast) var(--lapp-ease);}
.lapp-tabbar-item>svg,.lapp-tabbar-item>.lapp-tabbar-icon{width:21px;height:21px;flex:none;}
.lapp-tabbar-item.is-active,.lapp-tabbar-item[aria-current="page"]{color:var(--learn-teal-dark);background:rgba(15,157,140,.12);}
.lapp-tabbar-search{display:inline-grid;width:56px;height:56px;flex:0 0 56px;place-items:center;padding:0;border:1px solid rgba(11,111,98,.28);border-radius:50%;color:var(--learn-navy);background:var(--learn-teal);box-shadow:0 15px 34px rgba(11,111,98,.27);cursor:pointer;font:inherit;-webkit-tap-highlight-color:transparent;pointer-events:auto;transition:color var(--lapp-t-fast) var(--lapp-ease),background-color var(--lapp-t-fast) var(--lapp-ease),transform var(--lapp-t-fast) var(--lapp-ease),box-shadow var(--lapp-t-fast) var(--lapp-ease);}
.lapp-tabbar-search>svg{width:23px;height:23px;}
@media (hover:hover){.lapp-tabbar-item:hover{color:var(--learn-navy);background:rgba(15,157,140,.07);}
.lapp-tabbar-search:hover{color:var(--learn-white);background:var(--learn-teal-dark);box-shadow:0 18px 38px rgba(11,111,98,.34);transform:translateY(-2px);}
}
.lapp-chips{display:flex;width:calc(100% + (2 * var(--lapp-pad)));gap:9px;margin-inline:calc(-1 * var(--lapp-pad));padding:4px var(--lapp-pad) 9px;overflow-x:auto;overscroll-behavior-inline:contain;scroll-padding-inline:var(--lapp-pad);scroll-snap-type:x proximity;scrollbar-width:none;-webkit-overflow-scrolling:touch;-webkit-mask-image:linear-gradient(to right,transparent 0,#000 18px,#000 calc(100% - 18px),transparent 100%);mask-image:linear-gradient(to right,transparent 0,#000 18px,#000 calc(100% - 18px),transparent 100%);}
.lapp-chips::-webkit-scrollbar{display:none;}
.lapp-chip{display:inline-flex;min-width:var(--lapp-tap);min-height:var(--lapp-tap);flex:0 0 auto;align-items:center;justify-content:center;gap:8px;padding:.55rem 1rem;border:1px solid var(--learn-line);border-radius:var(--lapp-r-pill);color:var(--learn-navy);background:var(--learn-white);cursor:pointer;font:inherit;font-size:.9rem;font-weight:800;line-height:1;scroll-snap-align:start;text-decoration:none;white-space:nowrap;-webkit-tap-highlight-color:transparent;transition:color var(--lapp-t-fast) var(--lapp-ease),border-color var(--lapp-t-fast) var(--lapp-ease),background-color var(--lapp-t-fast) var(--lapp-ease),box-shadow var(--lapp-t-fast) var(--lapp-ease);}
.lapp-chip>svg,.lapp-chip>.lapp-chip-icon{width:18px;height:18px;flex:none;}
.lapp-chip.is-active,.lapp-chip[aria-pressed="true"],.lapp-chip[aria-checked="true"]{border-color:var(--learn-teal-dark);color:var(--learn-white);background:var(--learn-teal-dark);box-shadow:var(--lapp-shadow-chip);}
@media (hover:hover){.lapp-chip:hover{border-color:var(--learn-teal);background:#F5FCFA;}
.lapp-chip.is-active:hover,.lapp-chip[aria-pressed="true"]:hover,.lapp-chip[aria-checked="true"]:hover{border-color:var(--learn-teal-dark);color:var(--learn-white);background:var(--learn-teal-dark);}
}
.lapp-rail-section{min-width:0;}
.lapp-rail-section + .lapp-rail-section{margin-top:clamp(26px,7vw,42px);}
.lapp-rail-head{display:flex;min-height:var(--lapp-tap);align-items:center;justify-content:space-between;gap:14px;padding-inline:0;}
.lapp-rail-title{margin:0;color:var(--learn-navy);font-size:clamp(1.25rem,5.2vw,1.65rem);font-weight:800;letter-spacing:-.025em;line-height:1.12;text-wrap:balance;}
.lapp-rail-link{display:inline-flex;min-height:var(--lapp-tap);flex:0 0 auto;align-items:center;justify-content:center;padding:.45rem .3rem;border-radius:10px;color:var(--learn-teal-dark);font-size:.86rem;font-weight:800;text-decoration:none;transition:color var(--lapp-t-fast) var(--lapp-ease),background-color var(--lapp-t-fast) var(--lapp-ease);}
.lapp-rail{display:grid;width:calc(100% + (2 * var(--lapp-pad)));grid-auto-columns:minmax(246px,78vw);grid-auto-flow:column;gap:14px;margin:10px calc(-1 * var(--lapp-pad)) 0;padding:4px var(--lapp-pad) 16px;overflow-x:auto;overscroll-behavior-inline:contain;scroll-padding-inline:var(--lapp-pad);scroll-snap-type:x mandatory;scrollbar-width:none;-webkit-overflow-scrolling:touch;}
.lapp-rail::-webkit-scrollbar{display:none;}
.lapp-rail>.lapp-card{scroll-snap-align:start;scroll-snap-stop:normal;}
.lapp-screen--flush .lapp-chips,.lapp-screen--flush .lapp-rail{width:100%;margin-right:0;margin-left:0;}
.lapp-screen--flush .lapp-rail-head{padding-inline:var(--lapp-pad);}
@media (hover:hover){.lapp-rail-link:hover{color:var(--learn-navy);background:rgba(15,157,140,.08);}
}
.lapp-card{position:relative;min-width:0;overflow:hidden;border:1px solid var(--learn-line);border-radius:var(--lapp-r-lg);background:var(--learn-white);box-shadow:var(--lapp-shadow-card);transition:border-color var(--lapp-t-fast) var(--lapp-ease),box-shadow var(--lapp-t-base) var(--lapp-ease),transform var(--lapp-t-base) var(--lapp-ease);}
.lapp-card-link{display:flex;height:100%;min-height:100%;flex-direction:column;color:inherit;text-decoration:none;}
/* Les cinq sources servies mesurent 1200 par 675, soit 16/9 exactement. Le
16/10 declare ici recadrait donc 10 pour cent de la hauteur de chaque carte.
L aplat navy, lui, etait le plus grand bloc rempli du contenu : 76 176 px2 par
carte a 390 px. Fond blanc et filet a la place, le contrat interdit l aplat. */
.lapp-card-media{position:relative;aspect-ratio:16 / 9;overflow:hidden;background:var(--learn-white);box-shadow:inset 0 0 0 1px var(--learn-line);}
.lapp-card-media>img{width:100%;height:100%;object-fit:cover;transition:transform var(--lapp-t-slow) var(--lapp-ease);}
.lapp-card-badge{position:absolute;top:12px;right:12px;z-index:1;display:inline-flex;min-height:30px;align-items:center;padding:.35rem .65rem;border:1px solid var(--learn-line);border-radius:var(--lapp-r-pill);color:var(--learn-navy);background:var(--learn-white);box-shadow:0 2px 8px rgba(20,34,79,.14);font-size:.82rem;font-weight:800;letter-spacing:0;}
.lapp-card-body{display:flex;min-height:0;flex:1;flex-direction:column;padding:16px 16px 15px;}
.lapp-card-kicker{margin:0;color:var(--learn-teal-dark);font-size:.82rem;font-weight:800;letter-spacing:0;line-height:1.3;}
.lapp-card-title{display:-webkit-box;margin:7px 0 0;overflow:hidden;color:var(--learn-navy);font-size:1.08rem;font-weight:800;letter-spacing:-.015em;line-height:1.22;-webkit-box-orient:vertical;-webkit-line-clamp:2;}
.lapp-card-meta{display:flex;flex-wrap:wrap;gap:5px 12px;margin:10px 0 0;color:var(--learn-ink);font-size:.82rem;font-weight:650;}
.lapp-card-meta>span{display:inline-flex;align-items:center;gap:5px;}
.lapp-card-meta svg{width:15px;height:15px;flex:none;}
.lapp-card-progress{height:4px;margin-top:auto;border-radius:var(--lapp-r-pill);background:rgba(20,34,79,.12);overflow:hidden;}
.lapp-card-progress-fill{width:0;height:100%;border-radius:inherit;background:linear-gradient(90deg,var(--learn-teal-dark),var(--learn-teal));transition:width var(--lapp-t-base) var(--lapp-ease);}
.lapp-card-progress-label{display:flex;justify-content:space-between;gap:12px;margin-top:7px;color:var(--learn-ink);font-size:.82rem;font-weight:750;}
/* CARTE QUI PORTE UNE DECISION. Explorer est le catalogue : on y choisit son
parcours. La carte ne peut donc plus etre un lien qui enveloppe tout (un
bouton dans un lien est du balisage invalide) : le titre est le lien, et
l action se pose en pied. Meme composant que la tuile « Mes cours ». */
.lapp-card--choice .lapp-card-link{display:inline;color:inherit;text-decoration:none;}
.lapp-card--choice .lapp-card-link:hover{text-decoration:underline;text-underline-offset:3px;}
.lapp-card--choice.is-selected{border-color:rgba(15,157,140,.55);}
/* Un enfant ajoute a une carte en grille devient une COLONNE : le pied est donc
une pile declaree, jamais un enfant de plus laisse au flux. */
.lapp-card-foot{display:grid;width:100%;gap:7px;margin-top:auto;padding-top:14px;}
.lapp-card-foot .lapp-card-progress,.lapp-card-foot .lapp-card-progress-label{margin-top:0;}
/* L action est un CONTROLE : le filet teal au repos, l aplat teal fonce au
survol. 44 px de cible tactile. */
.lapp-card-action{display:inline-flex;width:100%;min-height:44px;align-items:center;justify-content:center;margin-top:5px;padding:.6rem .8rem;border:1px solid rgba(15,157,140,.5);border-radius:12px;color:var(--learn-teal-dark);background:var(--learn-white);cursor:pointer;font:inherit;font-size:1rem;font-weight:850;text-align:center;text-decoration:none;}
.lapp-card-action:hover{color:#fff;background:var(--learn-teal-dark);}
.lapp-card-action:disabled{cursor:progress;opacity:.65;}
/* Les drapeaux disent la recommandation et le choix enregistre. Ils se posent a
gauche du visuel, en face du badge d etat, et ne se confondent donc pas. */
.lapp-card-flag{position:absolute;top:12px;left:12px;z-index:1;display:inline-flex;min-height:30px;align-items:center;padding:.35rem .65rem;border:1px solid rgba(217,149,33,.6);border-radius:var(--lapp-r-pill);color:#3c2707;background:rgba(249,214,141,.94);font-size:.82rem;font-weight:850;letter-spacing:0;}
.lapp-card-flag.is-choice{top:auto;bottom:12px;border-color:rgba(15,157,140,.6);color:#04352e;background:rgba(178,232,222,.96);}
@media (hover:hover){.lapp-card:hover{border-color:rgba(15,157,140,.42);box-shadow:var(--lapp-shadow-card-hover);transform:translateY(-3px);}
.lapp-card:hover .lapp-card-media>img{transform:scale(1.025);}
}
.lapp-card:focus-within{border-color:var(--learn-teal);box-shadow:0 0 0 4px rgba(15,157,140,.13),var(--lapp-shadow-card-hover);}
.lapp-scrim{position:fixed;inset:0;z-index:var(--lapp-z-scrim);background:rgba(9,18,42,.56);animation:lapp-fade-in var(--lapp-t-fast) var(--lapp-ease);}
.lapp-sheet{position:fixed;right:0;bottom:0;left:0;z-index:var(--lapp-z-sheet);display:flex;max-height:calc(var(--lapp-vh) - 56px);flex-direction:column;padding:10px calc(var(--lapp-pad) + var(--lapp-safe-right)) calc(18px + var(--lapp-safe-bottom)) calc(var(--lapp-pad) + var(--lapp-safe-left));border:1px solid var(--learn-line);border-bottom:0;border-radius:var(--lapp-r-sheet) var(--lapp-r-sheet) 0 0;background:var(--learn-white);box-shadow:var(--lapp-shadow-sheet);animation:lapp-sheet-up var(--lapp-t-base) var(--lapp-ease);}
.lapp-sheet[hidden],.lapp-scrim[hidden],.lapp-snackbar[hidden]{display:none !important;}
.lapp-sheet-handle{width:44px;height:5px;flex:none;margin:0 auto 14px;border-radius:var(--lapp-r-pill);background:var(--learn-line);}
.lapp-sheet-head{display:flex;min-height:var(--lapp-tap);align-items:flex-start;justify-content:space-between;gap:16px;}
.lapp-sheet-title{margin:0;color:var(--learn-navy);font-size:clamp(1.2rem,5vw,1.5rem);font-weight:800;letter-spacing:-.018em;line-height:1.15;}
.lapp-sheet-close{display:inline-grid;width:var(--lapp-tap);height:var(--lapp-tap);flex:0 0 var(--lapp-tap);place-items:center;padding:0;border:1px solid var(--learn-line);border-radius:50%;color:var(--learn-navy);background:var(--learn-white);cursor:pointer;font:inherit;transition:border-color var(--lapp-t-fast) var(--lapp-ease),background-color var(--lapp-t-fast) var(--lapp-ease);}
.lapp-sheet-close>svg{width:20px;height:20px;}
.lapp-sheet-body{min-height:0;margin-top:10px;overflow-y:auto;overscroll-behavior:contain;-webkit-overflow-scrolling:touch;}
@media (hover:hover){.lapp-sheet-close:hover{border-color:var(--learn-teal);background:#F5FCFA;}
}
@keyframes lapp-sheet-up{from{transform:translateY(100%);}
to{transform:translateY(0);}
}
@keyframes lapp-fade-in{from{opacity:0;}
to{opacity:1;}
}
.lapp-skeleton{min-height:14px;border-radius:var(--lapp-r-sm);background:linear-gradient(100deg,rgba(20,34,79,.07) 30%,rgba(20,34,79,.15) 48%,rgba(20,34,79,.07) 66%);background-size:220% 100%;animation:lapp-shimmer 1.3s linear infinite;}
.lapp-skeleton--title{width:min(72%,280px);height:28px;}
.lapp-skeleton--text{height:14px;}
.lapp-skeleton--chip{width:112px;height:var(--lapp-tap);border-radius:var(--lapp-r-pill);}
.lapp-skeleton--card{width:min(78vw,320px);aspect-ratio:16 / 15;border-radius:var(--lapp-r-lg);}
@keyframes lapp-shimmer{from{background-position:120% 0;}
to{background-position:-120% 0;}
}
.lapp-snackbar{position:fixed;right:calc(var(--lapp-pad) + var(--lapp-safe-right));bottom:calc(88px + var(--lapp-safe-bottom));left:calc(var(--lapp-pad) + var(--lapp-safe-left));z-index:var(--lapp-z-snackbar);display:flex;width:min(100% - (2 * var(--lapp-pad)),520px);min-height:52px;align-items:center;justify-content:space-between;gap:12px;margin-inline:auto;padding:11px 12px 11px 16px;border:1px solid rgba(255,255,255,.18);border-radius:var(--lapp-r-md);color:var(--learn-white);background:var(--learn-navy-deep);box-shadow:0 18px 44px rgba(14,24,54,.30);font-size:.9rem;font-weight:700;animation:lapp-snackbar-in var(--lapp-t-base) var(--lapp-ease);}
.lapp-snackbar-action{display:inline-flex;min-width:var(--lapp-tap);min-height:var(--lapp-tap);flex:0 0 auto;align-items:center;justify-content:center;padding:.45rem .65rem;border:0;border-radius:10px;color:#8DE8DA;background:transparent;cursor:pointer;font:inherit;font-size:.82rem;font-weight:850;}
.lapp-snackbar-action:focus-visible{outline:2px solid var(--learn-teal);outline-offset:2px;}
@keyframes lapp-snackbar-in{from{opacity:0;transform:translateY(12px);}
to{opacity:1;transform:translateY(0);}
}
@media (min-width:920px){.lapp-tabbar{display:none;}
.lapp-screen{min-height:auto;padding-bottom:clamp(28px,4vw,52px);}
.lapp-rail{grid-auto-columns:minmax(270px,320px);}
.lapp-snackbar{bottom:24px;}
}
@media (max-width:370px){.lapp-tabbar{gap:7px;padding-right:calc(8px + var(--lapp-safe-right));padding-left:calc(8px + var(--lapp-safe-left));}
.lapp-tabbar-main{gap:1px;padding:4px;}
.lapp-tabbar-item{min-height:54px;padding-inline:4px;font-size:.62rem;}
.lapp-tabbar-search{width:54px;height:54px;flex-basis:54px;}
.lapp-rail{grid-auto-columns:minmax(232px,84vw);}
}
@media (forced-colors:active){.lapp-tabbar-main,.lapp-tabbar-search,.lapp-chip,.lapp-card,.lapp-sheet,.lapp-sheet-close,.lapp-snackbar{border:1px solid CanvasText;}
.lapp-tabbar-item.is-active,.lapp-tabbar-item[aria-current="page"],.lapp-chip.is-active,.lapp-chip[aria-pressed="true"],.lapp-chip[aria-checked="true"]{outline:2px solid Highlight;}
.lapp-card-progress-fill,.lapp-sheet-handle{background:Highlight;}
}
@media (prefers-reduced-motion:reduce){[class^="lapp-"],[class*=" lapp-"],[class^="lapp-"]::before,[class*=" lapp-"]::before,[class^="lapp-"]::after,[class*=" lapp-"]::after{scroll-behavior:auto !important;animation:none !important;transition:none !important;}
.lapp-skeleton{background:rgba(20,34,79,.09);}
}