/* ================================================================
   🎓 ACADÉMIE — feuille autonome, indépendante du thème.
   Tout est préfixé « ac- » pour ne rien casser autour.
   ================================================================ */
.ac-wrap {
    --ac-primary: #2563eb;
    --ac-primary-d: #1d4ed8;
    --ac-ok: #16a34a;
    --ac-ko: #dc2626;
    --ac-gold: #f59e0b;
    --ac-bg: #ffffff;
    --ac-soft: #f4f7ff;
    --ac-line: #dde5f5;
    --ac-text: #14181f;
    --ac-muted: #5b6577;
    max-width: 820px;
    margin: 0 auto;
    padding: 8px 14px 40px;
    color: var(--ac-text);
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    line-height: 1.6;
    box-sizing: border-box;
}
.ac-wrap *, .ac-wrap *::before, .ac-wrap *::after { box-sizing: inherit; }

.ac-hero { text-align: center; margin-bottom: 20px; }
.ac-title { margin: 0 0 4px; font-size: 26px; font-weight: 800; }
.ac-sub { margin: 0; font-size: 14.5px; color: var(--ac-muted); }

/* ---------- Choix de la langue ---------- */
.ac-tracks { display: grid; gap: 14px; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.ac-track {
    display: flex; flex-direction: column; align-items: center; gap: 4px;
    padding: 22px 16px; cursor: pointer;
    background: var(--ac-bg); border: 2px solid var(--ac-line); border-radius: 18px;
    font-family: inherit; color: inherit;
    transition: transform .15s ease, border-color .15s ease, box-shadow .2s ease;
}
.ac-track:hover { transform: translateY(-3px); border-color: var(--ac-primary); box-shadow: 0 10px 26px rgba(37,99,235,.16); }
.ac-track-ico { font-size: 34px; line-height: 1; }
.ac-track strong { font-size: 17px; }
.ac-track small { font-size: 12.5px; color: var(--ac-muted); }

/* ---------- Bandeau élève ---------- */
.ac-eleve {
    padding: 10px 14px; margin-bottom: 16px; border-radius: 12px;
    background: var(--ac-soft); border: 1px solid var(--ac-line); font-size: 14px;
}
.ac-pts { font-weight: 700; color: var(--ac-primary-d); }
.ac-invite { background: #fffbeb; border-color: #fde68a; color: #92400e; }

.ac-back {
    background: none; border: 0; padding: 4px 0; margin-bottom: 10px;
    color: var(--ac-primary); font-size: 14px; font-weight: 600; cursor: pointer; font-family: inherit;
}
.ac-load { text-align: center; color: var(--ac-muted); padding: 26px 0; }

/* ---------- Liste des leçons ---------- */
.ac-niveau { margin-bottom: 26px; }
.ac-niveau h3 { margin: 0; font-size: 17px; font-weight: 700; }
.ac-niveau-mg { margin: 0 0 10px; font-size: 13px; color: var(--ac-muted); }
.ac-grid { display: grid; gap: 10px; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); }
.ac-card {
    position: relative; display: flex; flex-direction: column; align-items: flex-start; gap: 2px;
    padding: 14px 15px 15px 46px; cursor: pointer; text-align: left;
    background: var(--ac-bg); border: 1.5px solid var(--ac-line); border-radius: 14px;
    font-family: inherit; color: inherit;
    transition: border-color .15s ease, transform .15s ease;
}
.ac-card:hover { border-color: var(--ac-primary); transform: translateY(-2px); }
.ac-num {
    position: absolute; left: 13px; top: 14px;
    width: 24px; height: 24px; border-radius: 50%;
    background: var(--ac-soft); color: var(--ac-primary-d);
    font-size: 12.5px; font-weight: 800; display: flex; align-items: center; justify-content: center;
}
.ac-card.ac-fait { border-color: var(--ac-ok); background: #f0fdf4; }
.ac-card.ac-fait .ac-num { background: var(--ac-ok); color: #fff; }
.ac-card-t { font-size: 14.5px; font-weight: 700; line-height: 1.3; }
.ac-card-s { font-size: 12.5px; color: var(--ac-muted); }
.ac-score { position: absolute; right: 12px; top: 13px; font-size: 12px; font-weight: 800; color: var(--ac-ok); }

/* ---------- La leçon ---------- */
.ac-lec-t { margin: 6px 0 0; font-size: 21px; font-weight: 800; }
.ac-lec-s { margin: 0 0 10px; font-size: 14px; color: var(--ac-muted); }
.ac-but {
    margin: 0 0 18px; padding: 10px 13px; border-radius: 12px;
    background: var(--ac-soft); border-left: 4px solid var(--ac-primary); font-size: 14px;
}
.ac-txt { font-size: 15px; margin: 0 0 10px; }
.ac-ex {
    display: flex; flex-direction: column; gap: 2px;
    padding: 10px 13px; margin: 0 0 8px; border-radius: 10px;
    background: var(--ac-soft); border: 1px solid var(--ac-line);
}
.ac-ex b { font-size: 15.5px; }
.ac-ex i { font-size: 13.5px; color: var(--ac-muted); font-style: normal; }

/* ---------- Exercices ---------- */
.ac-exos { margin-top: 24px; }
.ac-exo {
    padding: 15px 16px; margin-bottom: 14px; border-radius: 14px;
    background: var(--ac-bg); border: 1.5px solid var(--ac-line);
}
.ac-exo.ac-juste { border-color: var(--ac-ok); background: #f0fdf4; }
.ac-exo.ac-faux  { border-color: var(--ac-ko); background: #fef2f2; }
.ac-consigne { margin: 0 0 8px; font-size: 13px; color: var(--ac-muted); font-weight: 600; }
.ac-q { margin: 0 0 10px; font-size: 16px; }

.ac-choix { display: flex; flex-direction: column; gap: 8px; }
.ac-ch {
    padding: 11px 14px; text-align: left; cursor: pointer; font-family: inherit; font-size: 15px;
    background: var(--ac-bg); border: 1.5px solid var(--ac-line); border-radius: 11px; color: inherit;
}
.ac-ch:hover { border-color: var(--ac-primary); }
.ac-ch.ac-on { border-color: var(--ac-primary); background: var(--ac-soft); font-weight: 700; }

.ac-trou {
    display: inline-block; min-width: 130px; padding: 5px 9px; margin: 0 3px;
    border: 0; border-bottom: 2px solid var(--ac-primary); border-radius: 0;
    background: var(--ac-soft); font-size: 16px; font-family: inherit; color: inherit;
}
.ac-trou:focus { outline: none; background: #e6efff; }

.ac-ligne {
    min-height: 48px; padding: 8px; margin-bottom: 10px;
    border: 2px dashed var(--ac-line); border-radius: 11px;
    display: flex; flex-wrap: wrap; gap: 7px; align-content: flex-start;
}
.ac-mots { display: flex; flex-wrap: wrap; gap: 7px; }
.ac-mot {
    padding: 8px 13px; cursor: pointer; font-family: inherit; font-size: 15px;
    background: var(--ac-soft); border: 1.5px solid var(--ac-line); border-radius: 9px; color: inherit;
}
.ac-mot:hover { border-color: var(--ac-primary); }

.ac-paires { display: flex; flex-direction: column; gap: 9px; }
.ac-paire { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.ac-paire span { min-width: 110px; font-weight: 700; font-size: 15px; }
.ac-sel {
    flex: 1; min-width: 150px; padding: 9px 11px; font-family: inherit; font-size: 15px;
    border: 1.5px solid var(--ac-line); border-radius: 10px; background: var(--ac-bg); color: inherit;
}

.ac-corr { margin: 10px 0 0; font-size: 14px; font-weight: 600; color: var(--ac-ko); }
.ac-exo.ac-faux .ac-corr { color: #991b1b; }

/* ---------- Validation ---------- */
.ac-btn {
    width: 100%; padding: 15px; margin-top: 6px; cursor: pointer;
    font-family: inherit; font-size: 16px; font-weight: 800;
    color: #fff; background: var(--ac-primary); border: 0; border-radius: 13px;
    box-shadow: 0 8px 20px rgba(37,99,235,.26);
}
.ac-btn:hover:not(:disabled) { background: var(--ac-primary-d); }
.ac-btn:disabled { opacity: .6; cursor: not-allowed; }

.ac-result {
    margin-top: 16px; padding: 20px; border-radius: 16px; text-align: center;
    background: var(--ac-soft); border: 1.5px solid var(--ac-line);
}
.ac-score-big { font-size: 40px; font-weight: 800; color: var(--ac-primary-d); line-height: 1.1; }
.ac-gain { font-size: 17px; font-weight: 800; color: var(--ac-gold); margin: 6px 0 0; }

/* ---------- Toast ---------- */
.ac-toast {
    position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%) translateY(18px);
    padding: 12px 20px; border-radius: 12px; z-index: 2147483000;
    background: #111827; color: #fff; font-size: 14px; font-weight: 600;
    opacity: 0; pointer-events: none; transition: opacity .25s ease, transform .25s ease;
}
.ac-toast.ac-show { opacity: 1; transform: translateX(-50%) translateY(0); }

@media (max-width: 560px) {
    .ac-title { font-size: 22px; }
    .ac-grid { grid-template-columns: 1fr; }
    .ac-paire span { min-width: 100%; }
}