/* css/exercice.css — Page exercices interactifs
   Relooking 2026-08-24 : extraction du style inline, alignement theme.css.
   Zéro gradient, zéro box-shadow, tokens canoniques. */

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

/* ── Body ── */
.exercice-page {
  background: var(--ardoise);
  color: var(--craie);
  font-family: var(--font-body);
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* ── Nav ── */
.exercice-page nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 48px;
  background: rgba(9, 26, 9, 0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--card-border);
}
.exercice-page .brand-mark { font-family: var(--font-heading); font-size: 20px; font-weight: 500; color: var(--craie); text-decoration: none; display: flex; align-items: center; }
.exercice-page .vgl-signe { color: var(--craie-doree); }
.exercice-page .logo-ar { display: none; font-family: var(--font-ar); }
[dir="rtl"] .exercice-page .logo-fr { display: none; }
[dir="rtl"] .exercice-page .logo-ar { display: inline; }
.exercice-page .nav-right { display: flex; gap: 10px; align-items: center; }
.exercice-page .lang-toggle { display: flex; background: var(--card-bg); border-radius: 20px; padding: 2px; }
.exercice-page .lang-btn { padding: 4px 10px; border-radius: 16px; font-size: 12px; font-weight: 500; cursor: pointer; border: none; background: transparent; color: var(--craie-muted); transition: all 0.2s; }
.exercice-page .lang-btn.active { background: var(--craie); color: var(--ardoise); }
.exercice-page .nav-crumb { font-size: 13px; color: var(--craie-muted); display: flex; align-items: center; gap: 6px; }
.exercice-page .nav-crumb a { color: var(--craie-muted); text-decoration: none; }
.exercice-page .nav-crumb a:hover { color: var(--craie-doree); }
.exercice-page .hamburger { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 6px; min-height: 44px; min-width: 44px; }
.exercice-page .hamburger span { display: block; width: 22px; height: 2px; background: var(--craie); border-radius: 2px; transition: all 0.3s; }
.exercice-page .hamburger.open span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.exercice-page .hamburger.open span:nth-child(2) { opacity: 0; }
.exercice-page .hamburger.open span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }
.exercice-page .mobile-menu { display: none; position: fixed; inset: 0; z-index: 98; background: rgba(9, 26, 9, 0.97); backdrop-filter: blur(16px); flex-direction: column; align-items: center; justify-content: center; gap: 28px; padding: 32px; }
.exercice-page .mobile-menu.open { display: flex; }
.exercice-page .mobile-menu a { color: var(--craie); text-decoration: none; font-size: 22px; font-weight: 500; }
.exercice-page .mobile-menu .mob-lang { display: flex; background: var(--card-bg); border-radius: 20px; padding: 2px; margin-top: 8px; }

/* ── Layout ── */
.exercice-page .page { padding-top: 56px; max-width: 860px; margin: 0 auto; padding-inline-start: 48px; padding-inline-end: 48px; padding-bottom: 80px; }

/* ── Top row ── */
.exercice-page .ex-toprow { display: flex; align-items: center; justify-content: space-between; padding: 28px 0 16px; flex-wrap: wrap; gap: 12px; }
.exercice-page .ex-breadcrumb { font-size: 13px; color: var(--craie-muted); }
.exercice-page .ex-breadcrumb a { color: var(--craie-muted); text-decoration: none; }
.exercice-page .ex-counter { font-size: 13px; color: var(--craie-muted); background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 20px; padding: 4px 14px; }
.exercice-page .btn-mixte { font-size: 12px; color: var(--craie-doree); border: 1px solid var(--craie-doree-border); background: var(--craie-doree-dim); border-radius: 20px; padding: 4px 14px; text-decoration: none; white-space: nowrap; cursor: pointer; transition: background 0.15s; }
.exercice-page .btn-mixte:hover { background: var(--craie-doree-dim); }

/* ── Progress ── */
.exercice-page .ex-progress { margin-bottom: 28px; }
.exercice-page .ex-prog-dots { display: flex; gap: 6px; margin-bottom: 8px; flex-wrap: wrap; }
.exercice-page .prog-dot { width: 28px; height: 6px; border-radius: 3px; background: var(--card-border); transition: background 0.3s; }
.exercice-page .prog-dot.done { background: var(--craie-doree); }
.exercice-page .prog-dot.active { background: var(--craie-doree-border); }
.exercice-page .prog-dot.wrong-done { background: var(--wrong); }

/* ── Exercise card ── */
.exercice-page .ex-card { background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 20px; margin-bottom: 20px; overflow: hidden; }
.exercice-page .ex-card-header { padding: 20px 24px 0; display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; }
.exercice-page .ex-num { font-size: 11px; color: var(--craie-doree); font-weight: 500; text-transform: uppercase; letter-spacing: 0.1em; }
.exercice-page .ex-diff { font-size: 11px; font-weight: 500; padding: 3px 10px; border-radius: 6px; background: var(--craie-doree-dim); color: var(--craie-doree); border: 1px solid var(--craie-doree-border); }
.exercice-page .ex-diff.med { background: var(--orange-alerte-dim); color: var(--orange-alerte); border-color: var(--orange-alerte-border); }
.exercice-page .ex-diff.hard { background: var(--wrong-dim); color: var(--wrong); border-color: var(--wrong-border); }
.exercice-page .ex-enonce { padding: 16px 24px 20px; font-size: 15px; line-height: 1.75; color: var(--craie-muted); }
[dir="rtl"] .exercice-page .ex-enonce { font-family: var(--font-ar); font-size: 16px; }
.exercice-page .ex-formula { background: var(--card-bg); border-top: 1px solid var(--card-border); border-bottom: 1px solid var(--card-border); padding: 16px 24px; text-align: center; font-size: clamp(16px, 3vw, 22px); font-weight: 500; color: var(--craie-doree); font-family: var(--font-heading); letter-spacing: 0.02em; }

/* ── MCQ options ── */
.exercice-page .ex-opts { padding: 20px 24px; display: flex; flex-direction: column; gap: 10px; }
.exercice-page .ex-tf-wrap { padding: 16px 24px 8px; display: flex; gap: 12px; }
.exercice-page .ex-tf-btn { flex: 1; padding: 18px 10px; border-radius: 14px; border: 2px solid var(--card-border); background: var(--card-bg); color: var(--craie); font-size: 16px; font-weight: 500; cursor: pointer; font-family: var(--font-heading); transition: all 0.2s; }
.exercice-page .ex-tf-btn:hover { border-color: var(--craie-doree); color: var(--craie-doree); }
.exercice-page .ex-tf-btn.correct { background: var(--craie-doree-dim); border-color: var(--craie-doree); color: var(--craie-doree); }
.exercice-page .ex-tf-btn.wrong { background: var(--wrong-dim); border-color: var(--wrong); color: var(--wrong); }
.exercice-page .autoexp-wrap { padding: 8px 24px 0; }
.exercice-page .autoexp-label { font-size: 11px; color: var(--craie-muted); margin-bottom: 5px; }
.exercice-page .autoexp-ta { width: 100%; box-sizing: border-box; background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 10px; padding: 10px 14px; color: var(--craie-muted); font-family: var(--font-body); font-size: 13px; resize: none; min-height: 56px; }
.exercice-page .autoexp-ta:focus { outline: none; border-color: var(--craie-doree-border); }
.exercice-page .ex-opt { background: var(--card-bg); border: 1.5px solid var(--card-border); border-radius: 12px; padding: 14px 18px; cursor: pointer; text-align: start; font-family: var(--font-body); color: var(--craie); font-size: 14px; font-weight: 500; display: flex; align-items: center; gap: 14px; transition: all 0.15s; min-height: 48px; }
.exercice-page .ex-opt:hover:not(:disabled) { border-color: var(--craie-doree-border); background: var(--craie-doree-dim); }
.exercice-page .ex-opt.correct { border-color: var(--correct); background: var(--correct-dim); color: var(--correct); }
.exercice-page .ex-opt.wrong { border-color: var(--wrong); background: var(--wrong-dim); color: var(--wrong); }
.exercice-page .ex-opt:disabled { cursor: default; }
.exercice-page .opt-ltr { width: 28px; height: 28px; border-radius: 50%; border: 1.5px solid currentColor; display: flex; align-items: center; justify-content: center; font-size: 11px; font-weight: 500; flex-shrink: 0; opacity: 0.7; }
[dir="rtl"] .exercice-page .ex-opt { text-align: end; flex-direction: row-reverse; }

/* ── Pedagogie feedback ── */
.exercice-page .pourquoi-box { display: none; background: var(--wrong-soft-dim); border: 1px solid var(--wrong-soft-border); border-radius: 10px; padding: 12px 18px; font-size: 13px; color: var(--craie-muted); margin: 0 24px 12px; line-height: 1.6; }
.exercice-page .pourquoi-box.show { display: block; }
.exercice-page .pourquoi-box strong { color: var(--wrong-soft); }
[dir="rtl"] .exercice-page .pourquoi-box { font-family: var(--font-ar); text-align: end; }

/* ── XP flash ── */
.exercice-page .xp-flash { display: inline-flex; align-items: center; gap: 5px; background: var(--craie-doree-dim); border: 1px solid var(--craie-doree-border); color: var(--craie-doree); font-size: 12px; font-weight: 500; padding: 3px 10px; border-radius: 20px; margin: 8px 24px 0; animation: xpPop 0.4s ease; }
@keyframes xpPop { 0%{transform:scale(0.7);opacity:0} 70%{transform:scale(1.1)} 100%{transform:scale(1);opacity:1} }
@media (prefers-reduced-motion: reduce) { .exercice-page .xp-flash { animation: none; } }

/* ── Open answer ── */
.exercice-page .ex-open { padding: 0 24px 20px; }
.exercice-page .ex-textarea { width: 100%; background: var(--card-bg); border: 1px solid var(--card-border); border-radius: 12px; padding: 14px 16px; font-family: var(--font-body); font-size: 14px; color: var(--craie); outline: none; resize: vertical; min-height: 100px; transition: border-color 0.2s; }
.exercice-page .ex-textarea:focus { border-color: var(--craie-doree-border); }
.exercice-page .ex-textarea::placeholder { color: var(--craie-muted); }
[dir="rtl"] .exercice-page .ex-textarea { text-align: end; font-family: var(--font-ar); }

/* ── Hints ── */
.exercice-page .hints-row { padding: 0 24px 16px; display: flex; gap: 8px; flex-wrap: wrap; }
.exercice-page .hint-btn { background: transparent; border: 1px solid var(--card-border); border-radius: 8px; padding: 6px 14px; font-size: 12px; color: var(--craie-muted); cursor: pointer; font-family: var(--font-body); transition: all 0.2s; }
.exercice-page .hint-btn:hover { border-color: var(--bleu-info-border); color: var(--bleu-info); background: var(--bleu-info-dim); }
.exercice-page .hint-box { display: none; background: var(--bleu-info-dim); border: 1px solid var(--bleu-info-border); border-radius: 10px; padding: 12px 16px; font-size: 13px; color: var(--craie-muted); margin: 0 24px 16px; line-height: 1.6; }
.exercice-page .hint-box.show { display: block; }
[dir="rtl"] .exercice-page .hint-box,
[dir="rtl"] .exercice-page .hints-row { flex-direction: row-reverse; }
[dir="rtl"] .exercice-page .hint-box { font-family: var(--font-ar); }

/* ── Correction ── */
.exercice-page .correction-box { display: none; border-top: 1px solid var(--card-border); padding: 20px 24px; }
.exercice-page .correction-box.show { display: block; }
.exercice-page .correction-label { font-size: 11px; font-weight: 500; text-transform: uppercase; letter-spacing: 0.1em; color: var(--correct); margin-bottom: 12px; display: flex; align-items: center; gap: 6px; }
.exercice-page .correction-content { font-size: 14px; line-height: 1.75; color: var(--craie-muted); }
[dir="rtl"] .exercice-page .correction-content { font-family: var(--font-ar); }
.exercice-page .correction-formula { background: var(--card-bg); border-radius: 10px; padding: 12px 16px; font-size: 15px; font-weight: 500; color: var(--craie-doree); font-family: var(--font-heading); margin: 10px 0; text-align: center; }
.exercice-page .xp-earned { display: inline-flex; align-items: center; gap: 6px; background: var(--craie-doree-dim); border: 1px solid var(--craie-doree-border); color: var(--craie-doree); font-size: 12px; font-weight: 500; padding: 4px 12px; border-radius: 20px; margin-top: 10px; }

/* ── Actions ── */
.exercice-page .ex-actions { padding: 0 24px 24px; display: flex; gap: 10px; flex-wrap: wrap; }
.exercice-page .btn-reveal { background: transparent; border: 1px solid var(--craie-doree-border); color: var(--craie-doree); border-radius: 12px; padding: 12px 20px; font-family: var(--font-body); font-size: 14px; cursor: pointer; transition: all 0.2s; }
.exercice-page .btn-reveal:hover { background: var(--craie-doree-dim); }
.exercice-page .btn-next-ex { background: var(--craie-doree); color: var(--ardoise); border: none; border-radius: 12px; padding: 12px 24px; font-family: var(--font-heading); font-size: 14px; font-weight: 500; cursor: pointer; transition: opacity 0.2s; }
.exercice-page .btn-next-ex:hover { opacity: 0.9; }
[dir="rtl"] .exercice-page .ex-actions { flex-direction: row-reverse; }

/* ── Result bar ── */
.exercice-page .result-bar { background: var(--ardoise); border: 1px solid var(--craie-doree-border); border-radius: 18px; padding: 24px 28px; display: flex; align-items: center; justify-content: space-between; gap: 16px; flex-wrap: wrap; }
.exercice-page .result-score-big { font-family: var(--font-heading); font-size: 40px; font-weight: 500; color: var(--craie-doree); }
.exercice-page .result-info-title { font-family: var(--font-heading); font-size: 20px; font-weight: 500; margin-bottom: 4px; }
[dir="rtl"] .exercice-page .result-info-title { font-family: var(--font-ar); }
.exercice-page .result-info-sub { font-size: 13px; color: var(--craie-muted); }
.exercice-page .result-actions { display: flex; gap: 10px; flex-wrap: wrap; }
.exercice-page .btn-retry-ex { background: transparent; border: 1px solid var(--card-border); border-radius: 12px; padding: 11px 20px; font-family: var(--font-body); font-size: 14px; color: var(--craie-muted); cursor: pointer; transition: all 0.2s; }
.exercice-page .btn-retry-ex:hover { border-color: var(--craie-doree-border); color: var(--craie-doree); }
.exercice-page .btn-next-chap { background: var(--craie-doree); color: var(--ardoise); border: none; border-radius: 12px; padding: 11px 20px; font-family: var(--font-heading); font-size: 14px; font-weight: 500; cursor: pointer; text-decoration: none; display: inline-flex; align-items: center; }

/* ── Progress fills ── */
.exercice-page .prog-fill,
.exercice-page .resume-prog-fill,
.exercice-page .prog-bar-fill {
  background: var(--craie-doree) !important;
}

/* ── Footer ── */
.exercice-page footer { position: relative !important; }

/* ── RTL ── */
[dir="rtl"] .exercice-page nav,
[dir="rtl"] .exercice-page .nav-right { flex-direction: row-reverse; }
[dir="rtl"] .exercice-page .nav-crumb { flex-direction: row-reverse; }
[dir="rtl"] .exercice-page .ex-toprow { flex-direction: row-reverse; }
[dir="rtl"] .exercice-page .ex-card-header { flex-direction: row-reverse; }
[dir="rtl"] .exercice-page .ex-prog-dots { flex-direction: row-reverse; }
[dir="rtl"] .exercice-page .correction-label { flex-direction: row-reverse; }
[dir="rtl"] .exercice-page .result-bar { flex-direction: row-reverse; }
[dir="rtl"] .exercice-page .result-actions { flex-direction: row-reverse; }

/* ── Touch ── */
.exercice-page button,
.exercice-page a,
.exercice-page .ex-opt,
.exercice-page .lang-btn,
.exercice-page .hamburger,
.exercice-page .hint-btn,
.exercice-page .btn-reveal,
.exercice-page .btn-next-ex,
.exercice-page .btn-retry-ex,
.exercice-page .btn-next-chap,
.exercice-page .mobile-menu a,
.exercice-page .mob-lang .lang-btn {
  touch-action: manipulation;
  -webkit-tap-highlight-color: transparent;
}

/* ── Responsive ── */
@media (max-width: 768px) {
  .exercice-page nav { padding: 14px 20px; }
  .exercice-page .nav-crumb { display: none; }
  .exercice-page .nav-right .lang-toggle { display: none; }
  .exercice-page .nav-links { display: none; }
  .exercice-page .hamburger { display: flex; }
  .exercice-page .page { padding: 68px 12px 60px; }
}
@media (min-width: 1024px) {
  .exercice-page nav { padding: 14px 64px; }
  .exercice-page .page { padding-inline-start: 64px; padding-inline-end: 64px; }
}