:root {
  --rouge: #d52b1e; --rouge-fonce: #a81f15; --vert: #009b48; --vert-fonce: #00753a;
  --blanc: #fffdf8; --encre: #232323; --gris: #8a8a8a; --fond: #f6f3ec;
  --carte: #ffffff; --ombre: 0 2px 8px rgba(0, 0, 0, .08);
  --rayon: 14px;
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  background: var(--fond); color: var(--encre); min-height: 100dvh;
}
button { font: inherit; cursor: pointer; }

/* En-tête */
#topbar {
  display: flex; justify-content: space-between; align-items: center; gap: 8px;
  padding: 10px 16px; background: var(--rouge); color: var(--blanc);
  position: sticky; top: 0; z-index: 10; box-shadow: var(--ombre);
}
.brand { font-weight: 800; letter-spacing: .3px; }
.stats { display: flex; gap: 12px; font-weight: 600; font-size: .95rem; align-items: center; }
#level { background: var(--vert); padding: 2px 10px; border-radius: 999px; font-size: .85rem; }
#storage-warning { background: #fff3cd; color: #664d03; padding: 8px 16px; font-size: .9rem; }

#screen { max-width: 560px; margin: 0 auto; padding: 16px 16px 48px; }
.tagline { text-align: center; color: var(--gris); margin: 8px 0 20px; }
.loading { text-align: center; color: var(--gris); }

/* Parcours */
.path { display: flex; flex-direction: column; gap: 16px; }
.unit-card {
  background: var(--carte); border-radius: var(--rayon); box-shadow: var(--ombre);
  padding: 16px; border-left: 6px solid var(--vert);
}
.unit-card.locked { opacity: .55; border-left-color: var(--gris); }
.unit-head { display: flex; align-items: center; gap: 10px; }
.unit-icon { font-size: 1.6rem; }
.unit-title { margin: 0; font-size: 1.15rem; }
.locked-note { color: var(--gris); margin: 8px 0 0; font-size: .9rem; }
.lesson-list { display: flex; flex-direction: column; gap: 8px; margin-top: 12px; }
.lesson-btn {
  text-align: left; padding: 12px 14px; border: 2px solid #e5e0d5; background: var(--blanc);
  border-radius: 10px; font-weight: 600; transition: transform .1s;
}
.lesson-btn:not(:disabled):hover { transform: translateX(4px); border-color: var(--vert); }
.lesson-btn:disabled { color: var(--gris); cursor: not-allowed; }
.unit-error { color: var(--rouge); }
.btn-retry { padding: 8px 16px; border: none; border-radius: 8px; background: var(--rouge); color: var(--blanc); }

/* Leçon */
.lesson-top { display: flex; align-items: center; gap: 12px; margin-bottom: 20px; }
.btn-quit { border: none; background: none; font-size: 1.2rem; color: var(--gris); padding: 4px 8px; }
.progress-bar { flex: 1; height: 14px; background: #e5e0d5; border-radius: 999px; overflow: hidden; }
.progress-fill { height: 100%; width: 0; background: var(--vert); border-radius: 999px; transition: width .3s; }
.consigne { font-size: 1.05rem; margin: 0 0 14px; }
.prompt-card {
  background: var(--carte); border-radius: var(--rayon); box-shadow: var(--ombre);
  padding: 18px; text-align: center; margin-bottom: 16px;
}
.prompt-emoji { font-size: 3rem; }
.prompt-fr { color: var(--gris); font-weight: 600; margin-top: 6px; }
.prompt-sentence { font-size: 1.3rem; font-weight: 700; letter-spacing: .5px; }

/* Choix (QCM / trou) */
.choices { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.choice {
  padding: 16px 10px; border: 2px solid #e5e0d5; border-radius: 12px; background: var(--blanc);
  font-size: 1.05rem; font-weight: 700;
}
.choice.right { border-color: var(--vert); background: #e7f6ee; }
.choice.wrong { border-color: var(--rouge); background: #fdeae8; }
.choice-fr { display: block; margin-top: 4px; font-size: .8rem; font-weight: 600; color: var(--gris); }

/* Tuiles */
.tile-slots {
  min-height: 56px; border-bottom: 2px dashed #d8d2c4; display: flex; flex-wrap: wrap;
  gap: 8px; padding: 8px 0; margin-bottom: 14px;
}
.tile-bank { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px; }
.tile {
  padding: 10px 14px; border: 2px solid #e5e0d5; border-radius: 10px; background: var(--blanc);
  font-weight: 700;
}
.tile:disabled { opacity: .35; }
.tile.in-slot { border-color: var(--vert); }
.btn-check, .btn-continue {
  display: block; width: 100%; padding: 14px; border: none; border-radius: 12px;
  background: var(--vert); color: var(--blanc); font-size: 1.05rem; font-weight: 800;
}
.btn-check:disabled { background: #c8c2b4; }

/* Paires */
.pairs-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.pair-btn { padding: 14px 10px; border: 2px solid #e5e0d5; border-radius: 12px; background: var(--blanc); font-weight: 700; }
.pair-btn.selected { border-color: var(--rouge); background: #fdeae8; }
.pair-btn.done { border-color: var(--vert); background: #e7f6ee; opacity: .6; }
.pair-btn.wrong { animation: shake .3s; border-color: var(--rouge); }
@keyframes shake { 25% { transform: translateX(-4px); } 75% { transform: translateX(4px); } }

/* Feedback */
.feedback { margin-top: 18px; padding: 14px; border-radius: var(--rayon); }
.feedback.good { background: #e7f6ee; border: 2px solid var(--vert); }
.feedback.bad { background: #fdeae8; border: 2px solid var(--rouge); }
.fb-title { margin: 0 0 6px; font-weight: 800; display: flex; align-items: center; gap: 8px; }
.fb-answer { margin: 0 0 10px; font-size: 1.1rem; font-weight: 700; }

/* Audio */
.speak-btn { display: none; border: none; background: none; font-size: 1.1rem; padding: 0; }
body.has-eu-voice .speak-btn { display: inline-block; }

/* Fin de leçon */
.end-screen { text-align: center; padding-top: 40px; }
.end-emoji { font-size: 4rem; }
.end-title { color: var(--vert-fonce); font-size: 2rem; margin: 10px 0 4px; }
.end-sub { color: var(--gris); margin: 0 0 8px; }
.end-xp { font-weight: 800; font-size: 1.2rem; margin-bottom: 24px; }

@media (min-width: 561px) {
  .choices, .pairs-grid { gap: 12px; }
}