/* Mise en page : mobile d'abord (une colonne dès 320 px). */

.skip-link {
  position: absolute;
  left: 0.5rem;
  top: -4rem;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--primary);
  color: var(--on-primary);
  border-radius: var(--radius);
}

.skip-link:focus {
  top: 0.5rem;
}

.site-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 30;
}

.site-header__inner {
  max-width: 64rem;
  margin: 0 auto;
  padding: 0.5rem 1rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.brand {
  font-weight: 700;
  font-size: 1.15rem;
  text-decoration: none;
  color: var(--text);
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
}

.site-nav {
  display: none;
  width: 100%;
}

.site-header[data-open] .site-nav {
  display: block;
}

.nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

.nav-link {
  display: flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0 0.75rem;
  text-decoration: none;
  color: var(--text);
  border-radius: var(--radius);
}

.nav-link:hover {
  background: var(--surface-2);
}

.nav-link[aria-current='page'] {
  font-weight: 700;
  background: var(--surface-2);
  box-shadow: inset 0.25rem 0 0 var(--primary);
}

#app {
  flex: 1 0 auto;
  width: 100%;
  max-width: 52rem;
  margin: 0 auto;
  padding: 1rem 1rem 3rem;
}

.banner {
  max-width: 52rem;
  margin: 0.5rem auto 0;
  padding: 0 1rem;
}

.site-footer {
  border-top: 1px solid var(--border);
  background: var(--surface);
  padding: 1rem;
  text-align: center;
  color: var(--muted);
  font-size: 0.92rem;
}

.site-footer p {
  margin: 0.25rem 0;
}

.page-title .lead {
  color: var(--muted);
  font-size: 1.05rem;
}

/* Barre d'action fixe en bas d'écran (zone du pouce) */
.action-bar {
  position: fixed;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 40;
  background: var(--surface);
  border-top: 1px solid var(--border-strong);
  padding: 0.75rem 1rem calc(0.75rem + env(safe-area-inset-bottom, 0px));
}

.action-bar__inner {
  max-width: 52rem;
  margin: 0 auto;
}

.quiz {
  padding-bottom: 6rem;
}

@media (min-width: 48rem) {
  .btn.menu-toggle {
    display: none;
  }

  .site-nav {
    display: block;
    width: auto;
  }

  .nav-list {
    flex-direction: row;
    flex-wrap: wrap;
    gap: 0.25rem;
  }

  .nav-link[aria-current='page'] {
    box-shadow: inset 0 -0.25rem 0 var(--primary);
  }

  .mode-grid,
  .card-list,
  .option-list {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .gallery__list {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}