/* GalaxsciApp — Espace élève · thème clair & coloré, mobile-first.
   Accents repris de la charte du site (palette Nord) sur fond clair. */
:root{
  --bg:#eef1f6; --surface:#ffffff; --surface2:#f5f7fb;
  --text:#2e3440; --text2:#4c566a; --text3:#9aa1b2;
  --border:#e4e8f0; --border2:#d3d9e4;
  --accent:#88c0d0; --accent-d:#5e81ac;
  --green:#a3be8c; --green-d:#5f8a3f;
  --yellow:#ebcb8b; --yellow-d:#b08a1e;
  --orange:#d08770; --red:#bf616a; --purple:#b48ead;
  --r:14px; --r-sm:9px;
  --sans:'Segoe UI',system-ui,-apple-system,Roboto,Arial,sans-serif;
  --shadow:0 2px 10px rgba(46,52,64,.06);
}
*{box-sizing:border-box;margin:0;padding:0;-webkit-tap-highlight-color:transparent}
/* L'attribut hidden doit toujours l'emporter sur les display:flex (spécificité ID) */
[hidden]{display:none!important}
html,body{height:100%}
body{font-family:var(--sans);background:var(--bg);color:var(--text);font-size:15px;line-height:1.5}
b{font-weight:700}
img{max-width:100%;display:block;border-radius:var(--r-sm)}

/* ============ BOUTONS ============ */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;
  background:var(--accent-d);color:#fff;border:none;border-radius:var(--r-sm);
  padding:10px 16px;font-size:14px;font-weight:600;cursor:pointer;font-family:inherit;
  transition:filter .12s,transform .05s}
.btn:hover{filter:brightness(1.07)}
.btn:active{transform:scale(.98)}
.btn:disabled{opacity:.5;cursor:not-allowed}
.btn.btn-lg{width:100%;padding:13px;font-size:15px}
.btn.ghost{background:transparent;color:var(--accent-d);border:1.5px solid var(--border2)}
.btn.btn-buy{width:100%;background:var(--green-d);margin-top:auto}
.icon-btn{width:34px;height:34px;border:none;background:rgba(255,255,255,.18);color:#fff;
  border-radius:9px;font-size:16px;cursor:pointer;display:flex;align-items:center;justify-content:center}
.icon-btn:hover{background:rgba(255,255,255,.3)}
.back{background:none;border:none;color:var(--accent-d);font-size:14px;font-weight:600;
  cursor:pointer;padding:4px 0;margin-bottom:4px;font-family:inherit}

/* ============ LOGIN ============ */
#login-screen{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;
  padding:24px;background:radial-gradient(120% 100% at 50% 0,#dbe6f0 0,var(--bg) 55%)}
.login-wrap{width:100%;max-width:380px;text-align:center}
.brand{font-size:30px;font-weight:300;letter-spacing:-.5px;color:var(--accent-d)}
.brand b{font-weight:700;color:var(--text)}
.brand-rocket{font-size:26px}
.brand-sub{color:var(--text2);margin:4px 0 22px}
.login-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);
  padding:22px 20px;box-shadow:var(--shadow);text-align:left}
.login-card label{display:block;font-size:12px;font-weight:600;color:var(--text2);margin:10px 0 4px}
.login-card input{width:100%;padding:11px 12px;border:1.5px solid var(--border2);border-radius:var(--r-sm);
  font-size:16px;font-family:inherit;background:var(--surface2);color:var(--text)}
.login-card input:focus{outline:none;border-color:var(--accent)}
.login-card #login-id{text-transform:uppercase;letter-spacing:1px;font-weight:600}
.login-btn,.login-card .btn{margin-top:16px}
.login-err{color:var(--red);font-size:13px;min-height:18px;margin-top:8px}
.login-hint{font-size:12px;color:var(--text3);margin-top:14px}

/* ============ APP SHELL ============ */
#app-screen{display:flex;flex-direction:column;height:100%;max-width:560px;margin:0 auto;
  background:var(--bg)}
.topbar{position:sticky;top:0;z-index:20;display:flex;align-items:center;gap:8px;
  padding:10px 14px;padding-top:max(10px,env(safe-area-inset-top));
  background:linear-gradient(120deg,var(--accent-d),var(--accent));color:#fff}
.topbar-brand{font-size:16px;font-weight:300}
.topbar-brand b{font-weight:700}
.topbar-right{margin-left:auto;display:flex;align-items:center;gap:8px}
.top-id{font-size:13px;font-weight:700;font-family:'DM Mono',monospace}
.top-classe{font-size:11px;background:rgba(255,255,255,.2);padding:2px 8px;border-radius:20px}

.view{flex:1;overflow-y:auto;padding:14px;padding-bottom:80px;
  display:flex;flex-direction:column;gap:12px}

/* ============ TABBAR ============ */
.tabbar{position:fixed;bottom:0;left:0;right:0;max-width:560px;margin:0 auto;z-index:20;
  display:flex;background:var(--surface);border-top:1px solid var(--border);
  padding-bottom:env(safe-area-inset-bottom)}
.tabbar button{flex:1;border:none;background:none;cursor:pointer;font-family:inherit;
  display:flex;flex-direction:column;align-items:center;gap:2px;padding:8px 0 9px;
  font-size:11px;font-weight:600;color:var(--text3)}
.tabbar button span{font-size:20px;line-height:1;filter:grayscale(.5);opacity:.7}
.tabbar button.on{color:var(--accent-d)}
.tabbar button.on span{filter:none;opacity:1}

/* ============ CARTES & GÉNÉRIQUE ============ */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);
  padding:14px;box-shadow:var(--shadow)}
.card.muted{color:var(--text3);font-size:14px;text-align:center;padding:18px}
.sec-title{font-size:13px;font-weight:700;color:var(--text2);margin:6px 2px -2px;text-transform:uppercase;letter-spacing:.04em}
.hello{font-size:18px;margin:2px}

/* ÉTATS (chargement / erreur / vide) */
.state{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;
  gap:12px;color:var(--text3);text-align:center;padding:40px 20px;min-height:50vh}
.state p{max-width:280px;font-size:14px;color:var(--text2)}
.state-emoji{font-size:42px}
.spinner{width:34px;height:34px;border:3px solid var(--border2);border-top-color:var(--accent-d);
  border-radius:50%;animation:spin .8s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}

/* ============ DASHBOARD ============ */
.grade-card{display:flex;flex-direction:column;gap:10px;
  border:1px solid var(--gc,var(--accent));border-top:4px solid var(--gc,var(--accent))}
.grade-top{display:flex;align-items:center;justify-content:space-between;gap:10px}
.grade-badge{display:inline-flex;align-items:center;gap:7px;border:1.5px solid;border-radius:30px;padding:5px 12px 5px 10px}
.grade-icon{font-size:20px}
.grade-name{font-weight:700;font-size:15px}
.solde{text-align:right;line-height:1}
.solde-val{font-size:26px;font-weight:800}
.solde-val.big{font-size:38px}
.solde-unit{display:block;font-size:11px;color:var(--text3);margin-top:2px}
.grade-bar{height:9px;background:var(--surface2);border:1px solid var(--border);border-radius:6px;overflow:hidden}
.grade-fill{height:100%;border-radius:6px;transition:width .5s cubic-bezier(.4,0,.2,1)}
.grade-foot{font-size:13px;color:var(--text2)}
.grade-sub{font-size:11px;color:var(--text3)}
.solde-card{display:flex;flex-direction:column;align-items:center;gap:2px;
  background:linear-gradient(120deg,var(--accent-d),var(--accent));color:#fff;border:none}
.solde-card .solde-unit{color:rgba(255,255,255,.85)}

.quick{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px}
.quick.quick-2{grid-template-columns:1fr 1fr}
.quick-btn{background:var(--surface);border:1px solid var(--border);border-radius:var(--r-sm);
  padding:12px 4px;cursor:pointer;font-family:inherit;font-size:12px;font-weight:600;color:var(--text2);
  display:flex;flex-direction:column;align-items:center;gap:5px;box-shadow:var(--shadow)}
.quick-btn span{font-size:22px}
.quick-btn:active{transform:scale(.97)}

/* LISTES (activité, historique, achats) */
.list{display:flex;flex-direction:column;gap:0;padding:4px 0}
.li{display:flex;align-items:center;gap:10px;padding:9px 12px;border-bottom:1px solid var(--surface2)}
.li:last-child{border-bottom:none}
.li-ic{width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;
  font-size:11px;flex:none;font-weight:700}
.li-ic.pos{background:#e7f0dd;color:var(--green-d)}
.li-ic.neg{background:#fbe6e6;color:var(--red)}
.li-main{flex:1;min-width:0}
.li-lbl{font-size:14px;font-weight:500}
.li-sub{font-size:11px;color:var(--text3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.li-amt{font-weight:800;font-size:15px;flex:none}
.li-amt.pos{color:var(--green-d)}
.li-amt.neg{color:var(--red)}
.badge{font-size:11px;font-weight:700;padding:3px 9px;border-radius:20px;flex:none}
.badge.b-wait{background:#fdf2d8;color:var(--yellow-d)}
.badge.b-ok{background:#e7f0dd;color:var(--green-d)}
.badge.b-no{background:#fbe6e6;color:var(--red)}

/* ============ BOUTIQUE XP ============ */
.shop{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.shop-item{background:var(--surface);border:1px solid var(--border);border-radius:var(--r);
  padding:12px;display:flex;flex-direction:column;gap:5px;box-shadow:var(--shadow);min-height:140px}
.shop-item.off{opacity:.62}
.shop-cost{font-size:16px;font-weight:800;color:var(--accent-d)}
.shop-lbl{font-size:14px;font-weight:600;line-height:1.3}
.shop-desc{font-size:12px;color:var(--text3);flex:1}
.shop-rupt{margin-top:auto;text-align:center;font-size:12px;font-weight:700;color:var(--red);
  background:#fbe6e6;border-radius:var(--r-sm);padding:8px}

/* ============ EXERCICES ============ */
.pick{display:flex;flex-direction:column;gap:8px}
.pick-card{display:flex;align-items:center;gap:12px;background:var(--surface);border:1px solid var(--border);
  border-radius:var(--r);padding:14px;cursor:pointer;font-family:inherit;text-align:left;box-shadow:var(--shadow)}
.pick-card:active{transform:scale(.99)}
.pick-card.pick-cur{border-color:var(--accent);background:#eaf4f8;box-shadow:0 0 0 2px var(--accent) inset}
.pick-ic{font-size:24px}
.seance-hint{border-left:4px solid var(--accent);font-size:13px}
.seance-cta{margin-top:8px;width:100%}
.pick-lbl{flex:1;font-size:15px;font-weight:600}
.pick-n{font-size:11px;color:var(--text3);background:var(--surface2);padding:3px 9px;border-radius:20px}
.exo-head{font-size:12px;font-weight:700;color:var(--text3);text-transform:uppercase;letter-spacing:.04em}
#exo-form{display:flex;flex-direction:column;gap:12px}
.exo-grid{display:flex;flex-direction:column;gap:12px}
.exo-qcol{display:flex;flex-direction:column;gap:12px}
.exo-img{padding:8px}
.corr-lbl{font-size:12px;font-weight:700;color:var(--green-d);margin-bottom:6px}
.q{display:flex;flex-direction:column;gap:9px}
.q-txt{font-size:15px;font-weight:600}
.q-choices{display:flex;flex-direction:column;gap:7px}
.choice{display:flex;align-items:center;gap:10px;padding:11px 12px;border:1.5px solid var(--border2);
  border-radius:var(--r-sm);cursor:pointer;font-size:14px;background:var(--surface2)}
.choice input{width:18px;height:18px;accent-color:var(--accent-d);flex:none}
.choice:has(input:checked){border-color:var(--accent-d);background:#eaf2f7}
.result{display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center;margin-top:4px}
.result.ok{border:1.5px solid var(--green)}
.result.ko{border:1.5px solid var(--orange)}
.result-emoji{font-size:38px}
.result-title{font-size:15px;font-weight:600}
.result-xp{font-size:22px;font-weight:800;color:var(--green-d)}
.result-xp.muted{font-size:13px;font-weight:600;color:var(--text3)}
.result-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-top:6px;width:100%}
.result-actions .btn{flex:1;min-width:140px}

/* ============ RÉSULTATS ============ */
.seance{border-left:4px solid var(--accent)}
.seance-lbl{font-size:12px;font-weight:700;color:var(--accent-d)}
.seance-titre{font-size:15px;font-weight:600;margin:3px 0}
.seance-obj{margin:6px 0 0 18px;font-size:13px;color:var(--text2)}
.seance-obj li{margin:2px 0}
.eval{display:flex;flex-direction:column;gap:8px}
.eval-head{display:flex;align-items:flex-start;justify-content:space-between;gap:10px}
.eval-nom{font-size:16px;font-weight:700}
.eval-date{font-size:12px;color:var(--text3)}
.eval-note{font-size:26px;font-weight:800;line-height:1}
.eval-note span{font-size:13px;color:var(--text3);font-weight:600}
.comp-row{display:flex;align-items:center;gap:9px}
.comp-lbl{flex:1;font-size:13px;min-width:0}
.comp-lbl .coef{color:var(--text3);font-size:11px}
.comp-bar{width:34%;height:8px;background:var(--surface2);border:1px solid var(--border);border-radius:5px;overflow:hidden}
.comp-fill{height:100%;border-radius:5px;transition:width .5s}
.comp-pct{width:42px;text-align:right;font-size:13px;font-weight:700;font-family:'DM Mono',monospace}
.eval-com{background:var(--surface2);border-radius:var(--r-sm);padding:10px 12px;font-size:13px;
  line-height:1.55;color:var(--text);border:1px solid var(--border)}
.eval-com-lbl{font-size:12px;font-weight:700;color:var(--accent-d);margin-bottom:4px}

/* ============ ONBOARDING ============ */
.overlay{position:fixed;inset:0;z-index:50;background:rgba(46,52,64,.55);
  display:flex;align-items:center;justify-content:center;padding:22px}
.onb-card{background:var(--surface);border-radius:var(--r);padding:26px 22px;max-width:380px;
  text-align:center;box-shadow:0 12px 40px rgba(0,0,0,.2)}
.onb-emoji{font-size:46px}
.onb-card h2{font-size:20px;margin:8px 0 6px}
.onb-card>p{color:var(--text2);font-size:14px;margin-bottom:14px}
.onb-list{list-style:none;text-align:left;display:flex;flex-direction:column;gap:10px;margin-bottom:20px}
.onb-list li{display:flex;align-items:center;gap:11px;font-size:14px;color:var(--text2)}
.onb-list li span{font-size:22px;flex:none}

/* ============ TOAST ============ */
.toast{position:fixed;left:50%;bottom:78px;transform:translateX(-50%) translateY(12px);
  background:var(--text);color:#fff;padding:10px 16px;border-radius:24px;font-size:13px;font-weight:600;
  opacity:0;pointer-events:none;transition:opacity .2s,transform .2s;z-index:60;
  max-width:90%;text-align:center;box-shadow:0 6px 20px rgba(0,0,0,.2)}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}
.toast.err{background:var(--red)}
.toast.warn{background:var(--yellow-d)}
.toast.ok{background:var(--green-d)}

/* ============ DESKTOP / CLASSE (PC sans mobile) ============ */
@media (min-width:760px){
  #app-screen{max-width:980px}
  /* La navigation passe EN HAUT (sous la topbar), plus de barre fixe en bas */
  .view{order:1;padding:20px 26px;padding-bottom:26px}
  .tabbar{position:static;max-width:none;margin:0;padding:0 10px;
    border-top:none;border-bottom:1px solid var(--border);box-shadow:var(--shadow)}
  .tabbar button{flex:0 0 auto;flex-direction:row;gap:8px;padding:13px 20px;font-size:14px;
    border-bottom:3px solid transparent}
  .tabbar button span{font-size:18px}
  .tabbar button.on{color:var(--accent-d);border-bottom-color:var(--accent-d);background:var(--surface2)}
  .tabbar button.on span{filter:none;opacity:1}
  /* Grilles plus larges */
  .shop{grid-template-columns:repeat(3,1fr)}
  .pick{display:grid;grid-template-columns:1fr 1fr;gap:10px}
  .toast{bottom:24px}
  /* Exercice : énoncé à gauche (collant), questions à droite */
  .exo-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:18px;align-items:start}
  .exo-grid.single{display:block;max-width:680px}
  .exo-img-col{position:sticky;top:0}
}

::-webkit-scrollbar{width:5px;height:5px}
::-webkit-scrollbar-thumb{background:var(--border2);border-radius:3px}