/* =========================================================
   David Besson — Étude de terrain par drone & Étude de marché
   Charte premium : Noir profond / Or à deux tons (antique + champagne)
   Typos  : Cormorant Garamond (titres) + Montserrat (texte courant)
   ========================================================= */

@font-face {
  font-family: 'Cormorant Garamond';
  src: url('/fonts/cormorant-garamond-variable.woff2') format('woff2-variations'),
       url('/fonts/cormorant-garamond-variable.woff2') format('woff2');
  font-weight: 500 700;
  font-style: normal;
  font-display: swap;
}

@font-face {
  font-family: 'Montserrat';
  src: url('/fonts/montserrat-variable.woff2') format('woff2-variations'),
       url('/fonts/montserrat-variable.woff2') format('woff2');
  font-weight: 300 600;
  font-style: normal;
  font-display: swap;
}

:root {
  --noir: #080706;
  --noir-2: #131110;
  --noir-soft: #17150f;
  --or-deep: #9c7a3f;
  --or: #cda866;
  --or-clair: #f3d999;
  --gold-gradient: linear-gradient(135deg, var(--or-clair) 0%, var(--or) 48%, var(--or-deep) 100%);
  --gold-gradient-soft: linear-gradient(180deg, rgba(243,217,153,0.14), rgba(157,122,63,0.03));
  --texture: repeating-linear-gradient(135deg, rgba(205,168,102,0.05) 0px, rgba(205,168,102,0.05) 1px, transparent 1px, transparent 30px);
  --gris-clair: #beb9ae;
  --gris-fonce: #4a4a46;
  --blanc-casse: #f7f5f0;
  --texte: #1a1a1a;
  --font-titre: 'Cormorant Garamond', Georgia, serif;
  --font-texte: 'Montserrat', -apple-system, Segoe UI, sans-serif;
  --max-width: 1200px;
  --radius: 12px;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-texte);
  background: linear-gradient(180deg, #faf8f4 0%, #f3efe6 100%);
  background-attachment: fixed;
  color: var(--texte);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  position: relative;
}
/* liseré or fixe en tête de page, signature de marque */
body::before {
  content: '';
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--or-clair), var(--or), transparent);
  z-index: 300;
  pointer-events: none;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; margin: 0; padding: 0; }
h1, h2, h3 { font-family: var(--font-titre); font-weight: 600; line-height: 1.15; margin: 0 0 16px; }
p { margin: 0 0 16px; }
.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }

::selection { background: var(--or); color: var(--noir); }

::-webkit-scrollbar { width: 10px; }
::-webkit-scrollbar-track { background: var(--noir); }
::-webkit-scrollbar-thumb { background: var(--or-deep); border-radius: 10px; }
::-webkit-scrollbar-thumb:hover { background: var(--or); }

a:focus-visible, button:focus-visible, input:focus-visible,
textarea:focus-visible, select:focus-visible, summary:focus-visible {
  outline: 2px solid var(--or);
  outline-offset: 3px;
}

/* --- Lien d'évitement (accessibilité clavier) --- */
.skip-link {
  position: absolute;
  left: -999px;
  top: auto;
  background: var(--gold-gradient);
  color: var(--noir);
  padding: 12px 20px;
  z-index: 1000;
  font-weight: 600;
  border-radius: 0 0 6px 0;
}
.skip-link:focus { left: 0; top: 2px; }

/* --- Header / Nav — plaque dorée collée en haut, tous les liens visibles --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  justify-content: center;
  padding: 0 24px 16px;
  /* couleur plate = le ton le plus clair du dégradé du hero (son tout premier pixel) : aucune rupture au raccord */
  background: var(--texture), var(--noir-2);
}
.site-nav {
  display: inline-flex;
  align-items: center;
  flex-wrap: wrap;
  justify-content: center;
  gap: 20px 32px;
  max-width: calc(100vw - 48px);
  padding: 14px 28px;
  /* plaque dorée, écriture gravée en noir */
  background: var(--gold-gradient);
  border: 1px solid var(--or-deep);
  border-top: none;
  border-radius: 0 0 10px 10px;
  box-shadow: 0 12px 28px rgba(0,0,0,0.32);
}
.site-nav__logo {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-titre);
  font-weight: 600;
  font-size: 20px;
  letter-spacing: 2px;
  color: var(--noir);
  text-shadow: 0 1px 0 rgba(255,255,255,0.45);
}
.site-nav__logo img { width: 34px; height: 34px; object-fit: contain; filter: drop-shadow(0 1px 1px rgba(255,255,255,0.3)); }

.site-nav__links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 8px 26px;
}
.site-nav__links a {
  position: relative;
  font-size: 11px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--noir);
  text-shadow: 0 1px 0 rgba(255,255,255,0.4);
  padding: 4px 0;
}
.site-nav__links a::after {
  content: '';
  position: absolute;
  left: 0; bottom: 0;
  width: 0; height: 1.5px;
  background: var(--noir);
  transition: width 0.25s ease;
}
.site-nav__links a:hover::after,
.site-nav__links a[aria-current="page"]::after { width: 100%; }
.site-nav__links a[aria-current="page"] { font-weight: 600; }

@media (max-width: 480px) {
  .site-nav__logo span { display: none; }
}

/* --- Fil d'Ariane --- */
.breadcrumb { background: transparent; border-bottom: 1px solid rgba(205,168,102,0.18); }
.breadcrumb ol { display: flex; gap: 8px; padding: 12px 24px; max-width: var(--max-width); margin: 0 auto; font-size: 12px; color: var(--gris-fonce); }
.breadcrumb li + li::before { content: '/'; margin-right: 8px; color: var(--or); opacity: 0.5; }
.breadcrumb a:hover { color: var(--or-deep); }
.breadcrumb [aria-current="page"] { color: var(--texte); }

/* --- Numéros éditoriaux en filigrane (clin d'œil au brand book) --- */
section[aria-labelledby] { position: relative; }
section[aria-labelledby] > .section-inner,
section[aria-labelledby] > .container { position: relative; z-index: 1; }
section[aria-labelledby]::before {
  position: absolute;
  top: -0.22em;
  right: 20px;
  font-family: var(--font-titre);
  font-size: clamp(110px, 15vw, 210px);
  font-weight: 600;
  line-height: 1;
  color: transparent;
  -webkit-text-stroke: 1px rgba(205, 168, 102, 0.22);
  z-index: 0;
  pointer-events: none;
  user-select: none;
}
section[aria-labelledby="services-heading"]::before { content: '01'; }
section[aria-labelledby="about-heading"]::before     { content: '02'; }
section[aria-labelledby="faq-heading"]::before        { content: '03'; }
section[aria-labelledby="detail-heading"]::before     { content: '01'; }
section[aria-labelledby="parcours-heading"]::before   { content: '01'; }
section[aria-labelledby="methode-heading"]::before    { content: '02'; }
section[aria-labelledby="form-heading"]::before        { content: '01'; }

/* --- Hero --- */
.hero {
  position: relative;
  background:
    var(--texture),
    linear-gradient(180deg, var(--noir-2) 0%, var(--noir) 100%);
  background-attachment: fixed, scroll;
  padding: 120px 24px 96px;
  text-align: center;
  color: #fff;
  overflow: hidden;
}
.hero::after {
  content: '';
  position: absolute;
  inset: auto 0 0 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(205,168,102,0.4), transparent);
}
/* scintillement : seules les fines lignes diagonales du hero brillent, pas tout le fond */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(135deg,
    rgba(243,217,153,0.55) 0px, rgba(243,217,153,0.55) 1px,
    transparent 1px, transparent 30px);
  -webkit-mask-image: linear-gradient(115deg, transparent 38%, black 50%, transparent 62%);
          mask-image: linear-gradient(115deg, transparent 38%, black 50%, transparent 62%);
  -webkit-mask-size: 280% 280%;
          mask-size: 280% 280%;
  -webkit-mask-repeat: no-repeat;
          mask-repeat: no-repeat;
  animation: shimmerLines 7s ease-in-out infinite;
  pointer-events: none;
}
@keyframes shimmerLines {
  0%   { -webkit-mask-position: -90% -90%; mask-position: -90% -90%; }
  45%  { -webkit-mask-position: 190% 190%; mask-position: 190% 190%; }
  100% { -webkit-mask-position: 190% 190%; mask-position: 190% 190%; }
}
@media (prefers-reduced-motion: reduce) {
  .hero::before { animation: none; }
}
.hero__logo {
  width: 130px; height: 130px; object-fit: contain;
  margin: 0 auto 22px;
  filter: drop-shadow(0 0 26px rgba(205,168,102,0.35));
  animation: riseIn 0.9s ease both;
}
.hero h1 {
  font-size: clamp(34px, 5.4vw, 60px);
  letter-spacing: 0.5px;
  max-width: 900px;
  margin: 0 auto 18px;
  color: var(--or);
  background: var(--gold-gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  animation: riseIn 0.9s ease 0.1s both;
}
.hero__tagline {
  font-size: 13px; letter-spacing: 4px; text-transform: uppercase;
  color: var(--gris-clair); margin-bottom: 22px;
  animation: riseIn 0.9s ease 0.2s both;
}
.hero__desc {
  max-width: 580px; margin: 0 auto 30px; font-weight: 300;
  color: rgba(255,255,255,0.68); font-size: 16px;
  animation: riseIn 0.9s ease 0.3s both;
}
.hero--page { padding: 76px 24px 64px; }
.hero--page h1 { font-size: clamp(30px, 4.4vw, 44px); }
.hero .btn-group { animation: riseIn 0.9s ease 0.4s both; }

@keyframes riseIn {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
@media (prefers-reduced-motion: reduce) {
  .hero__logo, .hero h1, .hero__tagline, .hero__desc, .hero .btn-group { animation: none; }
}

/* --- Boutons --- */
.btn {
  position: relative;
  display: inline-block;
  padding: 16px 38px;
  background: var(--gold-gradient);
  color: var(--noir);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  border-radius: 4px;
  border: none;
  box-shadow: 0 10px 26px rgba(157,122,63,0.28), inset 0 1px 0 rgba(255,255,255,0.35);
  overflow: hidden;
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  cursor: pointer;
}
.btn::before {
  content: '';
  position: absolute;
  top: 0; left: -60%;
  width: 40%; height: 100%;
  background: linear-gradient(115deg, transparent, rgba(255,255,255,0.55), transparent);
  transform: skewX(-20deg);
  transition: left 0.6s ease;
}
.btn:hover { transform: translateY(-3px); box-shadow: 0 18px 38px rgba(157,122,63,0.4), inset 0 1px 0 rgba(255,255,255,0.35); }
.btn:hover::before { left: 130%; }
.btn-outline {
  background: transparent;
  color: var(--or-clair);
  border: 1.5px solid var(--or-deep);
  box-shadow: none;
}
.btn-outline::before { display: none; }
.btn-outline:hover {
  background: var(--gold-gradient);
  color: var(--noir);
  border-color: transparent;
  box-shadow: 0 14px 30px rgba(157,122,63,0.32);
}
.btn-group { display: flex; gap: 18px; justify-content: center; flex-wrap: wrap; }

/* --- Sections génériques --- */
section { padding: 96px 24px; }
.section-inner { max-width: var(--max-width); margin: 0 auto; }
.eyebrow {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 12px;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--or-deep);
  font-weight: 600;
  margin-bottom: 18px;
}
.eyebrow::after {
  content: '';
  flex: 1;
  max-width: 90px;
  height: 1px;
  background: linear-gradient(90deg, var(--or), transparent);
}
.on-dark .eyebrow { color: var(--or-clair); }
.title-lg { font-size: clamp(28px, 4vw, 40px); margin-bottom: 18px; }
.section-intro { max-width: 680px; color: var(--gris-fonce); font-weight: 300; }
.on-dark {
  position: relative;
  color: #fff;
  background:
    var(--texture),
    linear-gradient(180deg, var(--noir-2) 0%, var(--noir) 100%);
}
.on-dark::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(205,168,102,0.4), transparent);
}
.on-dark .section-intro { color: rgba(255,255,255,0.65); }
.on-dark h2 { color: #fff; }
.center { text-align: center; }
.center .eyebrow { justify-content: center; }
.center .eyebrow::after { display: none; }
.center .section-intro { margin-left: auto; margin-right: auto; }

/* --- Cartes services --- */
.services-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 30px; margin-top: 42px; }
.service-card {
  position: relative;
  border-radius: var(--radius);
  padding: 50px 42px;
  color: #fff;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background:
    var(--texture),
    linear-gradient(180deg, var(--noir-2), var(--noir)) padding-box,
    var(--gold-gradient) border-box;
  border: 1px solid transparent;
  box-shadow: 0 18px 40px rgba(0,0,0,0.28), inset 0 1px 0 rgba(255,255,255,0.05);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}
.service-card:hover { transform: translateY(-8px); box-shadow: 0 26px 54px rgba(0,0,0,0.4), 0 0 0 1px rgba(205,168,102,0.3); }
.service-card img { width: 70px; height: 70px; object-fit: contain; filter: drop-shadow(0 0 12px rgba(205,168,102,0.3)); }
.service-card h3 {
  font-size: 25px; margin-bottom: 4px;
  color: var(--or-clair);
}
.service-card p { color: rgba(255,255,255,0.68); font-weight: 300; font-size: 15px; margin-bottom: 8px; }
.service-card__list { display: flex; flex-direction: column; gap: 8px; margin-bottom: 10px; }
.service-card__list li { font-size: 14px; padding-left: 18px; position: relative; color: rgba(255,255,255,0.85); }
.service-card__list li::before { content: '—'; position: absolute; left: 0; color: var(--or); }
.service-card .btn-outline { align-self: flex-start; margin-top: 6px; }

/* --- Page service : contenu détaillé --- */
.service-detail { display: flex; gap: 60px; flex-wrap: wrap; align-items: flex-start; }
.service-detail__text { flex: 1.4; min-width: 300px; }
.service-detail__visual {
  flex: 1; min-width: 260px;
  border-radius: var(--radius);
  padding: 60px;
  display: flex; align-items: center; justify-content: center;
  position: sticky; top: 100px;
  background:
    var(--texture),
    linear-gradient(180deg, var(--noir-2), var(--noir)) padding-box,
    var(--gold-gradient) border-box;
  border: 1px solid transparent;
  box-shadow: 0 20px 50px rgba(0,0,0,0.3), inset 0 1px 0 rgba(255,255,255,0.05);
}
.service-detail__visual img { width: 180px; height: 180px; object-fit: contain; filter: drop-shadow(0 0 18px rgba(205,168,102,0.35)); }
.check-list { display: flex; flex-direction: column; gap: 14px; margin: 24px 0; }
.check-list li { padding-left: 30px; position: relative; }
.check-list li::before {
  content: '✓';
  position: absolute; left: 0; top: 0;
  color: var(--or-deep); font-weight: 700;
}

/* --- À propos / stats --- */
.about-flex { display: flex; gap: 60px; flex-wrap: wrap; align-items: center; }
.about-flex .col { flex: 1; min-width: 300px; }
.about-stats { display: flex; gap: 40px; flex-wrap: wrap; margin-top: 28px; }
.stat b {
  display: block; font-family: var(--font-titre); font-size: 38px;
  color: var(--or);
  background: var(--gold-gradient);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.stat span { font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--gris-fonce); }
.about-visual {
  border-radius: var(--radius); padding: 58px;
  display: flex; align-items: center; justify-content: center;
  background:
    var(--texture),
    linear-gradient(180deg, var(--noir-2), var(--noir)) padding-box,
    var(--gold-gradient) border-box;
  border: 1px solid transparent;
  box-shadow: 0 20px 50px rgba(0,0,0,0.3), inset 0 1px 0 rgba(255,255,255,0.05);
}
.about-visual img { width: 150px; height: 150px; object-fit: contain; filter: drop-shadow(0 0 16px rgba(205,168,102,0.3)); }

/* --- FAQ --- */
.faq { display: flex; flex-direction: column; gap: 14px; margin-top: 36px; max-width: 780px; }
.faq-item {
  background: linear-gradient(180deg, var(--noir-2), var(--noir));
  border-left: 3px solid var(--or-deep);
  border-radius: 8px;
  padding: 18px 26px;
  color: rgba(255,255,255,0.92);
  box-shadow: 0 10px 26px rgba(0,0,0,0.18);
  transition: border-color 0.25s, transform 0.25s;
}
.faq-item:hover { border-left-color: var(--or-clair); transform: translateX(2px); }
.faq-item summary {
  cursor: pointer;
  font-weight: 500;
  font-size: 16px;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: '+';
  font-size: 22px;
  color: var(--or-clair);
  flex-shrink: 0;
  transition: transform 0.2s;
}
.faq-item[open] summary::after { transform: rotate(45deg); }
.faq-item p { margin: 14px 0 0; font-weight: 300; color: rgba(255,255,255,0.62); }
.faq-item a { color: var(--or-clair); text-decoration: underline; text-underline-offset: 3px; }

/* --- Formulaire de contact --- */
.contact-layout { display: flex; gap: 60px; flex-wrap: wrap; }
.contact-layout .col { flex: 1; min-width: 300px; }
.form-field { margin-bottom: 22px; }
.form-field label { display: block; font-size: 12px; letter-spacing: 1px; text-transform: uppercase; margin-bottom: 8px; color: var(--gris-fonce); }
.form-field input,
.form-field select,
.form-field textarea {
  width: 100%;
  padding: 13px 16px;
  background: var(--noir-soft);
  border: 1px solid rgba(205,168,102,0.25);
  border-radius: 5px;
  color: #fff;
  font-family: var(--font-texte);
  font-size: 15px;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.form-field input:focus,
.form-field select:focus,
.form-field textarea:focus {
  outline: none;
  border-color: var(--or);
  box-shadow: 0 0 0 3px rgba(205,168,102,0.18);
}
.form-field textarea { resize: vertical; min-height: 120px; }
.form-field--optional label::after { content: ' (facultatif)'; color: var(--gris-fonce); text-transform: none; letter-spacing: 0; }
.contact-info-list { display: flex; flex-direction: column; gap: 22px; margin-top: 10px; }
.contact-info-list span.label { display: block; font-size: 11px; letter-spacing: 1.5px; text-transform: uppercase; color: var(--or-deep); margin-bottom: 4px; }
.contact-info-list a, .contact-info-list p { font-size: 17px; margin: 0; }
.contact-info-list a:hover { color: var(--or); }

/* --- Footer --- */
.site-footer {
  position: relative;
  background: #030302;
  color: rgba(255,255,255,0.55);
  padding: 58px 24px 30px;
}
.site-footer::before {
  content: '';
  position: absolute;
  inset: 0 0 auto 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, rgba(205,168,102,0.4), transparent);
}
.site-footer .container { display: flex; flex-wrap: wrap; gap: 36px; justify-content: space-between; }
.site-footer address { font-style: normal; font-size: 14px; line-height: 1.9; }
.site-footer address a:hover { color: var(--or); }
.site-footer strong {
  font-family: var(--font-titre); font-size: 19px; display: block; margin-bottom: 8px;
  color: var(--or);
  background: var(--gold-gradient);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.footer-legal { display: flex; gap: 18px; flex-wrap: wrap; font-size: 12px; }
.footer-legal a:hover { color: var(--or); }
.footer-bottom { text-align: center; font-size: 12px; color: rgba(255,255,255,0.3); margin-top: 40px; padding-top: 24px; border-top: 1px solid rgba(255,255,255,0.08); }

/* --- Pages légales --- */
.legal-content { max-width: 780px; }
.legal-content h2 { margin-top: 36px; font-size: 22px; }
.legal-content p, .legal-content li { color: var(--gris-fonce); }
.legal-content .placeholder { background: #fdf1d6; border-left: 3px solid var(--or-deep); padding: 10px 16px; font-size: 14px; color: #6b5620; border-radius: 0 6px 6px 0; }

/* --- 404 --- */
.error-page {
  position: relative;
  background:
    var(--texture),
    linear-gradient(180deg, var(--noir-2) 0%, var(--noir) 100%);
  color: #fff; text-align: center; padding: 150px 24px; min-height: 60vh;
}
.error-page h1 {
  font-size: clamp(90px, 16vw, 170px);
  margin-bottom: 0;
  color: var(--or);
  background: var(--gold-gradient);
  -webkit-background-clip: text; background-clip: text; -webkit-text-fill-color: transparent;
}
.error-page p { color: rgba(255,255,255,0.65); max-width: 480px; margin: 0 auto 30px; }