/* ============================================================
   uaa.css — Styles pour les pages pédagogiques (uaa.php)
   Dépend des variables définies dans style.css
   ============================================================ */

/* === Navbar UAA === */
.uaa-navbar {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.625rem 1.5rem;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
  flex-wrap: wrap;
}

.nav-home {
  font-size: 0.875rem;
  color: var(--color-muted);
  text-decoration: none;
  white-space: nowrap;
  padding: 4px 10px;
  border-radius: var(--radius-pill);
  border: 0.5px solid var(--color-border);
  transition: background 0.15s;
}
.nav-home:hover { background: #f1f0ec; }

.nav-uaa-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.nav-uaa-pill {
  font-size: 0.75rem;
  font-weight: 500;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  border: 0.5px solid var(--color-border);
  text-decoration: none;
  color: var(--color-muted);
  background: var(--color-bg);
  transition: background 0.15s, color 0.15s;
}
.nav-uaa-pill:hover { background: #e8e7e2; color: var(--color-text); }
.nav-uaa-pill.active {
  background: var(--color-text);
  color: var(--color-surface);
  border-color: transparent;
}

/* === En-tête UAA === */
.uaa-header {
  padding: 2rem 1.5rem 1.5rem;
}
.uaa-header-inner {
  max-width: 820px;
  margin: 0 auto;
}

.uaa-code-badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  padding: 3px 10px;
  border-radius: 4px;
  border: 0.5px solid;
  margin-bottom: 0.5rem;
}

.uaa-title {
  font-size: 1.6rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  line-height: 1.25;
}

.uaa-intro {
  font-size: 0.9375rem;
  color: var(--color-muted);
  line-height: 1.7;
  margin-bottom: 1.25rem;
  max-width: 680px;
}

/* === Toggle fiche / cours === */
.view-toggle {
  display: flex;
  gap: 8px;
}
.toggle-btn {
  font-size: 0.875rem;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  border: 0.5px solid var(--color-border);
  background: transparent;
  color: var(--color-muted);
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.toggle-btn:hover { background: rgba(0,0,0,0.05); }
.toggle-btn.active {
  background: var(--color-text);
  color: var(--color-surface);
  border-color: transparent;
}

/* === Main === */
.uaa-main {
  max-width: 820px;
  margin: 0 auto;
  padding: 1.5rem 1rem 4rem;
}

.hidden { display: none !important; }

/* === Fiche mémo === */
.memo-card {
  background: var(--color-surface);
  border: 0.5px solid var(--color-border);
  border-left: 4px solid;
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  padding: 1.25rem 1.5rem;
  box-shadow: var(--shadow-card);
}

.section-heading {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--color-text);
}

.memo-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.memo-item {
  font-size: 0.9rem;
  line-height: 1.6;
  padding-left: 1rem;
  position: relative;
}
.memo-item::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--color-hint);
  font-weight: 300;
}

/* === Cours complet === */
.cours-section {
  background: var(--color-surface);
  border: 0.5px solid var(--color-border);
  border-radius: var(--radius-card);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-card);
}

.cours-heading {
  font-size: 1rem;
  font-weight: 600;
  padding-left: 0.75rem;
  border-left: 3px solid;
  margin-bottom: 0.875rem;
  line-height: 1.4;
}

.cours-body {
  font-size: 0.9rem;
  line-height: 1.75;
  color: var(--color-text);
  margin-bottom: 0.75rem;
}

.formulas-box {
  background: #fafaf8;
  border: 0.5px solid;
  border-radius: 8px;
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  overflow-x: auto;
}
.formula-display {
  font-size: 0.95rem;
  text-align: center;
}

/* === Exercices === */
.exercices-section {
  margin-top: 2rem;
}

.exercices-heading {
  font-size: 1.15rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.exercice-card {
  background: var(--color-surface);
  border: 0.5px solid var(--color-border);
  border-left: 3px solid;
  border-radius: 0 var(--radius-card) var(--radius-card) 0;
  padding: 1rem 1.25rem;
  margin-bottom: 1rem;
  box-shadow: var(--shadow-card);
}

.ex-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.ex-num {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: var(--radius-pill);
  white-space: nowrap;
}

.ex-titre {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-text);
}

.ex-enonce {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-text);
  margin-bottom: 0.875rem;
  padding: 0.625rem 0.875rem;
  background: #f8f7f4;
  border-radius: 6px;
}

/* Bouton corrigé */
.corrige-toggle {
  font-size: 0.8125rem;
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  border: 0.5px solid;
  background: transparent;
  cursor: pointer;
  transition: background 0.15s;
}
.corrige-toggle:hover { background: rgba(0,0,0,0.04); }

.corrige-block {
  margin-top: 0.875rem;
}

.corrige-inner {
  border-left: 3px solid;
  padding: 0.75rem 1rem;
  background: #fafafa;
  border-radius: 0 8px 8px 0;
}

.corrige-label {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.625rem;
}

.corrige-steps {
  padding-left: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}
.corrige-steps li {
  font-size: 0.875rem;
  line-height: 1.7;
  color: var(--color-text);
}

/* === Navigation pied === */
.uaa-footer-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.nav-arrow {
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  border: 0.5px solid;
  transition: background 0.15s;
}
.nav-arrow:hover { background: rgba(0,0,0,0.04); }

.nav-home-btn {
  font-size: 0.8125rem;
  color: var(--color-muted);
  text-decoration: none;
}
.nav-home-btn:hover { color: var(--color-text); }

/* === Responsive === */
@media (max-width: 600px) {
  .uaa-navbar { padding: 0.5rem 0.75rem; }
  .nav-uaa-pill { font-size: 0.7rem; padding: 2px 8px; }
  .uaa-header { padding: 1.25rem 1rem 1rem; }
  .uaa-title { font-size: 1.3rem; }
  .uaa-main { padding: 1rem 0.75rem 3rem; }
}