/* =============================================================
   expertise.css — feuille de style des pages pilier « Expertises »
   Réutilisable pour toutes les pages Expertise LOCO
   (Communication 360, Branding, Stratégie de marque, Naming, etc.)
   Direction : cabinet de conseil premium — beaucoup d'espace,
   hiérarchie forte, typo élégante (Poppins + Fraunces serif).
   ============================================================= */

/* ---------- 1. Variables & reset ---------- */

.expertise-page,
.expertise-page * ,
.expertise-page *::before,
.expertise-page *::after { box-sizing: border-box; }

.expertise-page {
  --orange:       #e74011;
  --orange-hover: #c93609;
  --bleu:         #21317f;
  --bleu-clair:   #eaeef7;
  --noir:         #111111;
  --gris-fonce:   #3a3a3a;
  --gris:         #6b6b6b;
  --gris-line:    #e5e5e5;
  --gris-clair:   #f6f6f4;
  --blanc:        #ffffff;

  --font-sans:    "Poppins", "Helvetica Neue", Arial, sans-serif;
  --font-serif:   "Fraunces", Georgia, "Times New Roman", serif;

  --max:          1200px;
  --gutter:       clamp(24px, 4vw, 64px);
  --section-y:    clamp(64px, 8vw, 128px);

  font-family: var(--font-sans);
  color: var(--noir);
  background: var(--blanc);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ---------- 2. Conteneurs & utilitaires ---------- */

.expertise-page .wrap {
  width: 100%;
  max-width: var(--max);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.expertise-page .wrap--narrow { max-width: 880px; }

.expertise-page section { padding-block: var(--section-y); position: relative; }
.expertise-page .bg-gris { background: var(--gris-clair); }
.expertise-page .bg-bleu { background: var(--bleu); color: var(--blanc); }
.expertise-page .bg-bleu a { color: var(--blanc); }

/* ---------- 3. Typographie ---------- */

.expertise-page h1,
.expertise-page h2,
.expertise-page h3,
.expertise-page h4 {
  font-family: var(--font-sans);
  color: var(--bleu);
  font-weight: 700;
  letter-spacing: -.015em;
  margin: 0 0 .4em;
}

.expertise-page h1 {
  font-size: clamp(40px, 5.5vw, 72px);
  line-height: 1.05;
  font-weight: 800;
  letter-spacing: -.02em;
}
.expertise-page h2 {
  font-size: clamp(28px, 3.4vw, 44px);
  line-height: 1.15;
  font-weight: 700;
  margin-bottom: .55em;
}
.expertise-page h3 {
  font-size: clamp(20px, 1.6vw, 24px);
  line-height: 1.3;
  font-weight: 700;
}
.expertise-page h4 {
  font-size: 18px;
  line-height: 1.35;
  font-weight: 600;
}
.expertise-page p { margin: 0 0 1.1em; color: var(--gris-fonce); }
.expertise-page p.lead {
  font-size: clamp(19px, 1.5vw, 22px);
  line-height: 1.5;
  color: var(--noir);
  font-weight: 400;
}
.expertise-page a { color: var(--orange); text-decoration: none; transition: color .2s ease; }
.expertise-page a:hover { color: var(--orange-hover); }

.expertise-page .eyebrow {
  display: inline-block;
  font-size: 13px;
  font-weight: 600;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--orange);
  margin: 0 0 22px;
}

/* ---------- 4. Boutons (CTA pill) ---------- */

.expertise-page .btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 16px 28px;
  font-weight: 600; font-size: 15px;
  border-radius: 999px;
  border: 2px solid transparent;
  cursor: pointer;
  transition: all .35s ease;
  font-family: var(--font-sans);
}
.expertise-page .btn--primary {
  background: var(--orange); color: var(--blanc); border-color: var(--orange);
}
.expertise-page .btn--primary:hover { background: var(--noir); border-color: var(--noir); color: var(--blanc); }
.expertise-page .btn--outline {
  background: transparent; color: var(--bleu); border-color: var(--bleu);
}
.expertise-page .btn--outline:hover { background: var(--bleu); color: var(--blanc); }
.expertise-page .btn__arrow { transition: transform .2s ease; }
.expertise-page .btn:hover .btn__arrow { transform: translateX(4px); }

/* ---------- 5. Hero ---------- */

.expertise-page .hero {
  padding-top: clamp(80px, 12vw, 160px);
  padding-bottom: clamp(64px, 9vw, 120px);
  background: var(--blanc);
  position: relative;
  overflow: hidden;
}
.expertise-page .hero__inner { max-width: 900px; }
.expertise-page .hero h1 { margin-bottom: 32px; }
.expertise-page .hero .lead { max-width: 720px; margin-bottom: 40px; }
.expertise-page .hero__ctas { display: flex; flex-wrap: wrap; gap: 14px; }
.expertise-page .hero__marker {
  position: absolute;
  right: -6%;
  top: 12%;
  width: 55%;
  height: 88%;
  background: radial-gradient(circle at 30% 40%, rgba(33,49,127,.06), transparent 60%);
  pointer-events: none;
  z-index: 0;
}
.expertise-page .hero > .wrap { position: relative; z-index: 1; }

/* ---------- 6. En résumé (Google AI Overview) ---------- */

.expertise-page .summary {
  padding-block: clamp(48px, 6vw, 80px);
  background: var(--bleu-clair);
  border-block: 1px solid rgba(33,49,127,.08);
}
.expertise-page .summary__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 2fr);
  gap: clamp(24px, 4vw, 64px);
  align-items: start;
}
.expertise-page .summary__title { color: var(--bleu); margin: 0; }
.expertise-page .summary__list {
  list-style: none;
  padding: 0; margin: 0;
  display: grid;
  gap: 14px;
}
.expertise-page .summary__list li {
  font-size: 17px;
  line-height: 1.55;
  color: var(--noir);
  padding-left: 32px;
  position: relative;
}
.expertise-page .summary__list li::before {
  content: "✓";
  position: absolute;
  left: 0; top: 0;
  color: var(--orange);
  font-weight: 700;
  font-size: 18px;
}

/* ---------- 7. Bloc éditorial générique ---------- */

.expertise-page .editorial { padding-block: var(--section-y); }
.expertise-page .editorial__grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: clamp(28px, 4vw, 64px);
  align-items: start;
}
.expertise-page .editorial__grid--two {
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.4fr);
}
.expertise-page .editorial__body p { max-width: 62ch; }

/* ---------- 8. Callout « À retenir » (serif premium) ---------- */

.expertise-page .callout {
  margin: 40px 0 0;
  padding: 32px 40px;
  background: var(--gris-clair);
  border-left: 3px solid var(--orange);
}
.expertise-page .callout__label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--orange);
  margin: 0 0 12px;
}
.expertise-page .callout p {
  font-family: var(--font-serif);
  font-size: 22px;
  line-height: 1.4;
  color: var(--noir);
  font-weight: 400;
  margin: 0;
  font-style: italic;
  letter-spacing: -.005em;
}

/* ---------- 9. Grille des expertises ---------- */

.expertise-page .expertises-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: clamp(16px, 2vw, 28px);
  margin-top: 48px;
}
.expertise-page .expertise-card {
  background: var(--blanc);
  border: 1px solid var(--gris-line);
  padding: 32px 30px 28px;
  transition: transform .28s ease, border-color .28s ease, box-shadow .28s ease;
  position: relative;
  overflow: hidden;
}
.expertise-page .expertise-card:hover {
  transform: translateY(-4px);
  border-color: var(--orange);
}
.expertise-page .expertise-card__num {
  font-size: 13px;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: .08em;
  margin: 0 0 16px;
  display: block;
}
.expertise-page .expertise-card h3 {
  color: var(--bleu);
  margin-bottom: 14px;
  font-size: 21px;
}
.expertise-page .expertise-card p {
  color: var(--gris-fonce);
  font-size: 15px;
  line-height: 1.55;
  margin: 0;
}

/* ---------- 10. Méthode 5 étapes (schéma horizontal) ---------- */

.expertise-page .method {
  margin-top: 56px;
}
.expertise-page .method__steps {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 8px;
  counter-reset: step;
}
.expertise-page .method__step {
  position: relative;
  padding: 28px 20px 24px;
  background: var(--blanc);
  border-top: 3px solid var(--orange);
  counter-increment: step;
}
.expertise-page .method__step::before {
  content: "0" counter(step);
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--orange);
  letter-spacing: .1em;
  margin-bottom: 10px;
}
.expertise-page .method__step h4 {
  color: var(--bleu);
  font-size: 18px;
  margin: 0 0 10px;
  font-weight: 700;
}
.expertise-page .method__step p {
  font-size: 14px;
  line-height: 1.5;
  margin: 0;
  color: var(--gris-fonce);
}

/* ---------- 11. Bloc IA — Say Hi To AI ---------- */

.expertise-page .ai-block {
  background: var(--noir);
  color: var(--blanc);
  padding-block: clamp(72px, 9vw, 120px);
  position: relative;
}
.expertise-page .ai-block h2 { color: var(--blanc); }
.expertise-page .ai-block p { color: rgba(255,255,255,.85); max-width: 640px; }
.expertise-page .ai-block .btn--primary { margin-top: 20px; }
.expertise-page .ai-block__label {
  display: inline-block;
  font-size: 13px;
  font-weight: 800;
  letter-spacing: .05em;
  margin-bottom: 24px;
}
.expertise-page .ai-block__label .blue { color: #6993d8; }
.expertise-page .ai-block__label .orange { color: var(--orange); }

/* ---------- 12. Citation / Notre conviction ---------- */

.expertise-page .conviction {
  padding-block: clamp(80px, 10vw, 140px);
  text-align: center;
}
.expertise-page .conviction__quote {
  font-family: var(--font-serif);
  font-size: clamp(26px, 3vw, 38px);
  line-height: 1.35;
  color: var(--noir);
  font-weight: 400;
  font-style: italic;
  max-width: 900px;
  margin: 0 auto 32px;
  letter-spacing: -.01em;
}
.expertise-page .conviction__quote::before {
  content: "";
  display: block;
  width: 48px; height: 3px;
  background: var(--orange);
  margin: 0 auto 40px;
}
.expertise-page .conviction__author {
  font-family: var(--font-sans);
  font-size: 14px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--bleu);
  font-weight: 600;
}

/* ---------- 13. Réalisations ---------- */

.expertise-page .realisations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: clamp(20px, 2vw, 32px);
  margin-top: 48px;
}
.expertise-page .realisation-card {
  display: flex;
  flex-direction: column;
  background: var(--blanc);
  overflow: hidden;
  border: 1px solid var(--gris-line);
  transition: transform .3s ease, border-color .3s ease;
  text-decoration: none;
  color: inherit;
}
.expertise-page .realisation-card:hover {
  transform: translateY(-4px);
  border-color: var(--orange);
}
.expertise-page .realisation-card__img {
  aspect-ratio: 4 / 3;
  overflow: hidden;
  background: var(--gris-clair);
}
.expertise-page .realisation-card__img img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  transition: transform .5s ease;
}
.expertise-page .realisation-card:hover .realisation-card__img img {
  transform: scale(1.03);
}
.expertise-page .realisation-card__body { padding: 26px 28px 32px; }
.expertise-page .realisation-card__tag {
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--orange);
  font-weight: 700;
  margin: 0 0 12px;
  display: block;
}
.expertise-page .realisation-card h3 {
  color: var(--bleu);
  font-size: 22px;
  margin: 0 0 12px;
  line-height: 1.25;
}
.expertise-page .realisation-card p {
  color: var(--gris-fonce);
  font-size: 15px;
  line-height: 1.55;
  margin: 0;
}
.expertise-page .realisation-card__link {
  display: inline-flex; align-items: center; gap: 6px;
  margin-top: 18px;
  font-weight: 600; font-size: 14px;
  color: var(--orange);
}

/* ---------- 14. Bloc articles AI2AI ---------- */

.expertise-page .articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: clamp(16px, 2vw, 24px);
  margin-top: 48px;
}
.expertise-page .article-card {
  display: flex; flex-direction: column;
  padding: 32px 30px;
  background: var(--blanc);
  border: 1px solid var(--gris-line);
  transition: transform .3s ease, border-color .3s ease;
  text-decoration: none;
  color: inherit;
  height: 100%;
}
.expertise-page .article-card:hover {
  transform: translateY(-3px);
  border-color: var(--bleu);
}
.expertise-page .article-card__tag {
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--orange);
  font-weight: 700;
  margin: 0 0 16px;
}
.expertise-page .article-card h3 {
  color: var(--bleu);
  font-size: 19px;
  line-height: 1.35;
  margin: 0 0 14px;
  font-weight: 700;
}
.expertise-page .article-card p {
  color: var(--gris-fonce);
  font-size: 14px;
  line-height: 1.55;
  margin: 0 0 24px;
  flex-grow: 1;
}
.expertise-page .article-card__link {
  font-size: 13px;
  font-weight: 600;
  color: var(--orange);
  letter-spacing: .04em;
}

/* ---------- 15. FAQ (accordéon) ---------- */

.expertise-page .faq { margin-top: 48px; max-width: 900px; }
.expertise-page .faq details {
  border-top: 1px solid var(--gris-line);
  padding: 24px 0;
  cursor: pointer;
}
.expertise-page .faq details:last-child { border-bottom: 1px solid var(--gris-line); }
.expertise-page .faq summary {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  list-style: none;
  color: var(--bleu);
  font-weight: 600;
  font-size: 18px;
  line-height: 1.35;
  transition: color .2s ease;
}
.expertise-page .faq summary::-webkit-details-marker { display: none; }
.expertise-page .faq summary::after {
  content: "+";
  color: var(--orange);
  font-size: 26px;
  font-weight: 400;
  line-height: 1;
  transition: transform .3s ease;
  flex-shrink: 0;
}
.expertise-page .faq details[open] summary::after {
  content: "−";
  transform: rotate(0);
}
.expertise-page .faq summary:hover { color: var(--orange); }
.expertise-page .faq details p {
  margin-top: 18px;
  color: var(--gris-fonce);
  font-size: 16px;
  line-height: 1.65;
  max-width: 72ch;
}

/* ---------- 16. Manifeste « Pourquoi LOCO » ---------- */

.expertise-page .manifesto {
  padding-block: clamp(72px, 9vw, 120px);
  background: var(--gris-clair);
}
.expertise-page .manifesto__inner { max-width: 780px; }

/* ---------- 17. CTA final ---------- */

.expertise-page .final-cta {
  padding-block: clamp(80px, 10vw, 140px);
  text-align: center;
  background: var(--blanc);
}
.expertise-page .final-cta h2 { max-width: 640px; margin: 0 auto 24px; }
.expertise-page .final-cta p { max-width: 620px; margin: 0 auto 40px; }

/* ---------- 18. Fil d'ariane ---------- */

.expertise-page .breadcrumb {
  padding: 24px 0;
  font-size: 13px;
  color: var(--gris);
  border-bottom: 1px solid var(--gris-line);
}
.expertise-page .breadcrumb a { color: var(--gris); }
.expertise-page .breadcrumb a:hover { color: var(--orange); }
.expertise-page .breadcrumb__sep { margin: 0 12px; color: var(--gris-line); }

/* ---------- 19. Fade-in au scroll (JS light) ---------- */

.expertise-page .fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .8s ease, transform .8s ease;
}
.expertise-page .fade-in.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 20. Responsive ---------- */

@media (max-width: 900px) {
  .expertise-page .summary__grid { grid-template-columns: 1fr; }
  .expertise-page .editorial__grid--two { grid-template-columns: 1fr; }
  .expertise-page .method__steps { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 640px) {
  .expertise-page { font-size: 16px; }
  .expertise-page .callout { padding: 24px 24px; }
  .expertise-page .callout p { font-size: 19px; }
  .expertise-page .method__steps { grid-template-columns: 1fr; }
  .expertise-page .hero__ctas { flex-direction: column; align-items: stretch; }
  .expertise-page .hero__ctas .btn { justify-content: center; }
}