/* FAQ (#6). Sortie du <style> de l'ancien faq.php (#8). */
:root {
  --fond: #0d1117;
  --fond-clair: #161b22;
  --fond-carte: #1c2128;
  --bordure: #30363d;
  --texte: #e6edf3;
  --texte-attenue: #8b949e;
  --accent: #ff8a00;
  --accent-fonce: #cc6e00;
  --accent-clair: #ffb15c;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--fond);
  color: var(--texte);
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

/* ===== En-tête ===== */
#entete {
  background-color: var(--fond-clair);
  border-bottom: 1px solid var(--bordure);
  position: sticky;
  top: 0;
  z-index: 10;
}

#entete .conteneur {
  max-width: 1200px;
  margin: 0 auto;
  padding: 1rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

#logo {
  font-size: 1.6rem;
  font-weight: 800;
  letter-spacing: 0.5px;
  color: var(--texte);
}

#logo span {
  color: var(--accent);
}

#nav-principale ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 2rem;
}

#nav-principale a {
  color: var(--texte-attenue);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.5rem 0;
  border-bottom: 2px solid transparent;
  transition: color 0.2s ease, border-color 0.2s ease;
}

#nav-principale a:hover,
#nav-principale a:focus,
#nav-principale a.actif {
  color: var(--accent);
  border-bottom-color: var(--accent);
}

.bouton {
  display: inline-block;
  background-color: var(--accent);
  color: #1a1200;
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.85rem 1.8rem;
  border-radius: 4px;
  transition: background-color 0.2s ease, transform 0.15s ease;
}

.bouton:hover {
  background-color: var(--accent-clair);
  transform: translateY(-2px);
}

main > section {
  max-width: 900px;
  margin: 0 auto;
  padding: 3.5rem 1.5rem;
}

.titre-section {
  font-size: 1.7rem;
  margin-bottom: 0.4rem;
}

.sous-titre-section {
  color: var(--texte-attenue);
  margin-bottom: 2rem;
  font-size: 0.98rem;
}

.sous-titre-section strong {
  color: var(--texte);
}

/* ===== Filtres par catégorie ===== */
#faq-categories ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-bottom: 2.5rem;
}

#faq-categories a {
  display: inline-block;
  border: 1px solid var(--bordure);
  border-radius: 999px;
  padding: 0.4rem 1rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--texte-attenue);
  transition: border-color 0.2s ease, color 0.2s ease;
}

#faq-categories a:hover,
#faq-categories a:focus,
#faq-categories a.actif {
  border-color: var(--accent);
  color: var(--accent);
}

/* ===== Accordéon ===== */
/* <details name="faq"> : même nom sur toutes les questions, le navigateur
   n'en laisse qu'une seule ouverte à la fois, sans JavaScript. */
.faq-categorie {
  margin-bottom: 2.5rem;
}

.faq-categorie h2 {
  font-size: 1.15rem;
  margin-bottom: 0.9rem;
  color: var(--accent-clair);
}

.faq-question {
  background-color: var(--fond-carte);
  border: 1px solid var(--bordure);
  border-radius: 6px;
  margin-bottom: 0.6rem;
  scroll-margin-top: 6rem;
}

.faq-question[open] {
  border-color: var(--accent-fonce);
}

.faq-question summary {
  cursor: pointer;
  padding: 1rem 1.2rem;
  font-weight: 600;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

.faq-question summary::-webkit-details-marker {
  display: none;
}

.faq-question summary::after {
  content: "+";
  color: var(--accent);
  font-size: 1.3rem;
  font-weight: 700;
  line-height: 1;
}

.faq-question[open] summary::after {
  content: "−";
}

.faq-question summary:hover,
.faq-question summary:focus-visible {
  color: var(--accent-clair);
}

.faq-reponse {
  padding: 0 1.2rem 1.1rem;
  color: var(--texte-attenue);
}

.faq-reponse p {
  margin-bottom: 0.8rem;
}

.faq-lien {
  font-size: 0.8rem;
  color: var(--texte-attenue);
  text-decoration: underline;
}

.faq-lien:hover {
  color: var(--accent);
}

#faq-contact {
  border-top: 1px solid var(--bordure);
  padding-top: 2rem;
}

#faq-contact p {
  color: var(--texte-attenue);
  margin-bottom: 1.2rem;
}

/* ===== Pied de page ===== */
#pied-de-page {
  background-color: var(--fond-clair);
  border-top: 1px solid var(--bordure);
  padding: 2.5rem 1.5rem 1.5rem;
}

#pied-de-page .conteneur {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 2rem;
}

.pied-bloc h3 {
  font-size: 1rem;
  margin-bottom: 0.9rem;
  color: var(--texte);
}

.pied-bloc p {
  color: var(--texte-attenue);
  font-size: 0.9rem;
  max-width: 32ch;
}

.pied-bloc ul {
  list-style: none;
}

.pied-bloc li {
  margin-bottom: 0.6rem;
}

.pied-bloc a {
  color: var(--texte-attenue);
  font-size: 0.9rem;
  transition: color 0.2s ease;
}

.pied-bloc a:hover {
  color: var(--accent);
}

.pied-de-page-bas {
  max-width: 1200px;
  margin: 2rem auto 0;
  padding-top: 1.2rem;
  border-top: 1px solid var(--bordure);
  color: var(--texte-attenue);
  font-size: 0.82rem;
  text-align: center;
}

/* ===== Responsive ===== */
@media (max-width: 900px) {
  #pied-de-page .conteneur {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 640px) {
  #entete .conteneur {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.8rem;
  }

  #nav-principale ul {
    gap: 0.5rem 1.2rem;
  }
}