/* ============================================================
   STI Concept : sti.css
   Charte graphique : palette derivee du logo, Tenor Sans / Inter,
   contraste minimum 4,5:1, valeurs numeriques en tabular-nums.
   ============================================================ */

/* ---------- 1. Polices auto-hebergees (RGPD : pas d'appel a Google) ---- */
@font-face {
  font-family: "Tenor Sans";
  src: url("/assets/fonts/tenor-sans-latin.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("/assets/fonts/inter-latin-400.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("/assets/fonts/inter-latin-600.woff2") format("woff2");
  font-weight: 600;
  font-style: normal;
  font-display: swap;
}

/* ---------- 2. Jetons de la charte ------------------------------------ */
:root {
  /* Couleurs */
  --sti-primaire:        #0D4B8E;
  --sti-primaire-fonce:  #093766;
  --sti-secondaire:      #2E5E3F;
  --sti-cta:             #C63016;
  --sti-cta-survol:      #A62812; /* derive assombri du CTA, reserve aux survols */
  --sti-accent-vif:      #F4472E; /* filets et pictos uniquement, jamais de texte */
  --sti-eau:             #458A9B;
  --sti-olive:           #4E6835;
  --sti-vert-pale:       #B6CCBB;
  --sti-texte:           #33414D;
  --sti-texte-secondaire:#5A6672;
  --sti-bordure:         #DDE3E6;
  --sti-fond:            #F7F9F8;
  --sti-surface:         #FFFFFF;

  /* Typographie */
  --sti-titre: "Tenor Sans", Georgia, serif;
  --sti-texte-police: "Inter", -apple-system, "Segoe UI", Roboto, sans-serif;

  /* Rythme */
  --sti-conteneur: 72rem;
  --sti-espace: 1.5rem;
  --sti-transition: 180ms ease;
}

/* ---------- 3. Socle --------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; background: var(--sti-fond); }

body {
  margin: 0;
  font-family: var(--sti-texte-police);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--sti-texte);
  background: transparent;
}

h1, h2, h3, h4 {
  font-family: var(--sti-titre);
  font-weight: 400;           /* Tenor Sans n'a qu'une graisse */
  line-height: 1.25;
  color: var(--sti-primaire-fonce);
  margin: 0 0 0.6em;
}
h1 { font-size: clamp(1.9rem, 4vw, 2.6rem); }
h2 { font-size: clamp(1.5rem, 3vw, 1.9rem); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 1em; }

a {
  color: var(--sti-primaire);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
  transition: color var(--sti-transition);
}
a:hover { color: var(--sti-primaire-fonce); }

strong { font-weight: 600; }

img { max-width: 100%; height: auto; }

/* Toute valeur chiffree : alignement en colonne garanti */
table, .valeur, td, th {
  font-variant-numeric: tabular-nums;
}

.conteneur {
  max-width: var(--sti-conteneur);
  margin-inline: auto;
  padding-inline: var(--sti-espace);
}

/* Accessibilite */
.visuellement-cache {
  position: absolute; width: 1px; height: 1px;
  margin: -1px; padding: 0; border: 0;
  clip: rect(0 0 0 0); overflow: hidden; white-space: nowrap;
}
.acces-rapide {
  position: absolute; left: -999px; top: 0;
  background: var(--sti-primaire-fonce); color: #fff;
  padding: 0.5rem 1rem; z-index: 100;
}
.acces-rapide:focus { left: 0; color: #fff; }

:focus-visible {
  outline: 2px solid var(--sti-primaire);
  outline-offset: 2px;
  border-radius: 2px;
}

/* ---------- 5. Filet signature ----------------------------------------
   Double trait asymetrique sous les titres de section : un long bleu eau,
   un court vert : echo discret des vagues du logo. */
.filet {
  display: flex; gap: 0.4rem; align-items: center;
  margin: 0.2rem 0 1.4rem;
}
.filet::before {
  content: ""; width: 3.5rem; height: 2px;
  background: var(--sti-eau);
}
.filet::after {
  content: ""; width: 1.1rem; height: 2px;
  background: var(--sti-secondaire);
}

/* ---------- 5. Boutons ------------------------------------------------- */
.btn {
  display: inline-block;
  font-family: var(--sti-texte-police);
  font-weight: 600;
  font-size: 1rem;
  padding: 0.7rem 1.5rem;
  border-radius: 3px;
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: background var(--sti-transition), color var(--sti-transition),
              border-color var(--sti-transition), transform var(--sti-transition);
}
.btn:active { transform: translateY(1px); }

/* CTA principal : rouge de la charte, texte blanc (contraste 5,5:1) */
.btn-cta {
  background: var(--sti-cta);
  color: #fff;
}
.btn-cta:hover { background: var(--sti-cta-survol); color: #fff; }

/* Bouton secondaire : contour bleu primaire */
.btn-contour {
  background: transparent;
  color: var(--sti-primaire);
  border-color: var(--sti-primaire);
}
.btn-contour:hover {
  background: var(--sti-primaire);
  color: #fff;
}

/* ---------- 6. En-tete et navigation ----------------------------------- */
.site-entete {
  background: var(--sti-surface);
  border-bottom: 1px solid var(--sti-bordure);
  position: sticky; top: 0; z-index: 50;
}
.site-entete-int {
  display: flex; align-items: center; justify-content: space-between;
  gap: 1.5rem; min-height: 4.5rem;
}

.marque {
  display: flex; flex-direction: column;
  text-decoration: none; line-height: 1.2;
  padding-block: 0.6rem;
}
.marque-nom {
  font-family: var(--sti-titre);
  font-size: 1.35rem;
  letter-spacing: 0.04em;
  color: var(--sti-primaire-fonce);
}
.marque-signature {
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sti-texte-secondaire);
}

.nav-principale ul {
  list-style: none; margin: 0; padding: 0;
}
.nav-principale > ul {
  display: flex; align-items: center; gap: 0.2rem;
}
.nav-principale li { position: relative; }

.nav-principale a,
.sous-menu-bascule {
  display: inline-block;
  font-family: var(--sti-texte-police);
  font-size: 0.95rem;
  color: var(--sti-texte);
  text-decoration: none;
  padding: 0.55rem 0.75rem;
  background: none; border: 0; cursor: pointer;
}

/* Effet menu : soulignement qui s'etend du centre */
.nav-principale > ul > li > a:not(.btn),
.sous-menu-bascule {
  position: relative;
}
.nav-principale > ul > li > a:not(.btn)::after,
.sous-menu-bascule::after {
  content: "";
  position: absolute; left: 0.75rem; right: 0.75rem; bottom: 0.2rem;
  height: 2px;
  background: var(--sti-primaire);
  transform: scaleX(0);
  transform-origin: center;
  transition: transform var(--sti-transition);
}
.nav-principale > ul > li > a:not(.btn):hover::after,
.nav-principale > ul > li > a:not(.btn)[aria-current="page"]::after,
.a-sous-menu:hover .sous-menu-bascule::after,
.a-sous-menu.actif .sous-menu-bascule::after {
  transform: scaleX(1);
}
.nav-principale a[aria-current="page"],
.a-sous-menu.actif .sous-menu-bascule {
  color: var(--sti-primaire);
}

.chevron { margin-left: 0.3rem; transition: transform var(--sti-transition); }
.a-sous-menu:hover .chevron,
.sous-menu-bascule[aria-expanded="true"] .chevron { transform: rotate(180deg); }

/* Sous-menu Expertises */
.nav-principale .sous-menu {
  position: absolute; top: 100%; left: 0;
  min-width: 17rem;
  background: var(--sti-surface);
  border: 1px solid var(--sti-bordure);
  border-top: 2px solid var(--sti-primaire);
  box-shadow: 0 10px 24px rgba(9, 55, 102, 0.10);
  padding: 0.4rem 0;
  display: none;
  flex-direction: column; align-items: stretch;
}
.nav-principale .a-sous-menu:hover .sous-menu,
.nav-principale .a-sous-menu:focus-within .sous-menu,
.nav-principale .sous-menu-bascule[aria-expanded="true"] + .sous-menu {
  display: flex;
}
.nav-principale .sous-menu a {
  display: block;
  padding: 0.55rem 1.1rem;
  border-left: 2px solid transparent;
  transition: background var(--sti-transition), border-color var(--sti-transition);
}
.nav-principale .sous-menu a:hover,
.nav-principale .sous-menu a[aria-current="page"] {
  background: var(--sti-fond);
  border-left-color: var(--sti-cta);
  color: var(--sti-primaire-fonce);
}

.nav-contact { margin-left: 0.6rem; }
.nav-contact .btn { padding: 0.5rem 1.2rem; font-size: 0.95rem; }

/* Bouton burger : cache au-dela de 960 px */
.nav-bascule {
  display: none;
  background: none; border: 0; cursor: pointer;
  padding: 0.75rem;
}
.nav-bascule-barre,
.nav-bascule-barre::before,
.nav-bascule-barre::after {
  content: ""; display: block;
  width: 1.4rem; height: 2px;
  background: var(--sti-primaire-fonce);
  transition: transform var(--sti-transition), opacity var(--sti-transition);
}
.nav-bascule-barre { position: relative; }
.nav-bascule-barre::before { position: absolute; top: -6px; }
.nav-bascule-barre::after  { position: absolute; top: 6px; }
.nav-bascule[aria-expanded="true"] .nav-bascule-barre { background: transparent; }
.nav-bascule[aria-expanded="true"] .nav-bascule-barre::before { transform: translateY(6px) rotate(45deg); }
.nav-bascule[aria-expanded="true"] .nav-bascule-barre::after  { transform: translateY(-6px) rotate(-45deg); }

/* ---------- 7. Navigation mobile --------------------------------------- */
@media (max-width: 60em) {
  .nav-bascule { display: block; }

  .nav-principale {
    position: absolute; top: 100%; left: 0; right: 0;
    background: var(--sti-surface);
    border-bottom: 1px solid var(--sti-bordure);
    display: none;
  }
  body.nav-ouverte .nav-principale { display: block; }

  .nav-principale > ul {
    flex-direction: column; align-items: stretch; gap: 0;
    padding: 0.5rem var(--sti-espace) 1rem;
  }
  .nav-principale a, .sous-menu-bascule {
    display: block; width: 100%; text-align: left;
    padding: 0.8rem 0.25rem;
    border-bottom: 1px solid var(--sti-bordure);
  }
  .nav-principale > ul > li > a:not(.btn)::after,
  .sous-menu-bascule::after { display: none; }

  .nav-principale .sous-menu {
    position: static;
    display: none;
    border: 0; border-left: 2px solid var(--sti-vert-pale);
    box-shadow: none;
    margin: 0.2rem 0 0.4rem 0.9rem;
  }
  /* pas d'ouverture au survol ni au focus en mobile : uniquement au clic */
  .nav-principale .a-sous-menu:hover .sous-menu,
  .nav-principale .a-sous-menu:focus-within .sous-menu { display: none; }
  .nav-principale .sous-menu-bascule[aria-expanded="true"] + .sous-menu { display: flex; }

  .nav-contact { margin: 0.8rem 0 0; }
  .nav-contact .btn { display: block; text-align: center; }
}

/* ---------- 8. Sections et surfaces ------------------------------------ */
.section { padding-block: 3.5rem; }
.section-teintee { background: var(--sti-surface); border-block: 1px solid var(--sti-bordure); }

.carte {
  background: var(--sti-surface);
  border: 1px solid var(--sti-bordure);
  border-radius: 4px;
  padding: 1.5rem;
  transition: box-shadow var(--sti-transition), transform var(--sti-transition);
}
.carte:hover {
  box-shadow: 0 8px 20px rgba(9, 55, 102, 0.08);
  transform: translateY(-2px);
}

/* ---------- 9. Pied de page -------------------------------------------- */
.site-pied {
  background: var(--sti-primaire-fonce);
  color: #E8EDF2;
  margin-top: 4rem;
}
.site-pied-int {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: 2rem;
  padding-block: 3rem 2rem;
}
.pied-marque {
  font-family: var(--sti-titre);
  font-size: 1.25rem;
  color: #fff;
  margin-bottom: 0.5rem;
}
.pied-titre {
  font-size: 0.8rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--sti-vert-pale);
  margin-bottom: 0.6rem;
}
.pied-liens { list-style: none; margin: 0; padding: 0; }
.pied-liens li { margin-bottom: 0.35rem; }
.site-pied a { color: #E8EDF2; text-decoration: none; }
.site-pied a:hover { color: #fff; text-decoration: underline; text-underline-offset: 3px; }

.pied-base { border-top: 1px solid rgba(232, 237, 242, 0.18); }
.pied-base-int { padding-block: 1rem; }
.pied-base p { margin: 0; font-size: 0.85rem; color: var(--sti-vert-pale); }

/* ---------- 10. Page d'accueil ------------------------------------------ */
.hero { padding-block: 4.5rem 3rem; }
.hero-intro { max-width: 44rem; font-size: 1.08rem; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.8rem; margin-top: 1.6rem; }

/* Bandeau vivant : quatre indicateurs sur fond blanc, filets verticaux */
.bandeau-vivant {
  background: var(--sti-surface);
  border-block: 1px solid var(--sti-bordure);
}
.bandeau-vivant-int {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
  gap: 0;
}
.indicateur {
  display: flex; flex-direction: column; gap: 0.15rem;
  padding: 1.1rem 1.4rem;
  border-left: 1px solid var(--sti-bordure);
}
.indicateur:first-child { border-left: 0; }
.indicateur-libelle {
  font-size: 0.72rem; letter-spacing: 0.07em; text-transform: uppercase;
  color: var(--sti-texte-secondaire);
}
.indicateur-valeur {
  font-size: 1.35rem; font-weight: 600;
  color: var(--sti-primaire-fonce);
}
.indicateur-source { font-size: 0.72rem; color: var(--sti-texte-secondaire); }

/* Grilles de cartes */
.grille { display: grid; gap: 1.2rem; }
.grille-4 { grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }

.carte h3 { margin-bottom: 0.4rem; }
.carte-lien {
  color: var(--sti-primaire-fonce);
  text-decoration: none;
}
.carte-lien:hover { color: var(--sti-primaire); text-decoration: underline; text-underline-offset: 4px; }
.carte p { margin: 0; font-size: 0.95rem; color: var(--sti-texte-secondaire); }

/* Blocs a deux volets */
.bloc-plateforme, .bloc-bureau {
  display: grid; gap: 1.5rem;
  grid-template-columns: 2fr 1fr;
  align-items: center;
}
.bloc-plateforme-action { justify-self: end; margin: 0; }
@media (max-width: 48em) {
  .bloc-plateforme, .bloc-bureau { grid-template-columns: 1fr; }
  .bloc-plateforme-action { justify-self: start; }
}

/* ---------- 11. Pages interieures ---------------------------------------- */
.page-entete { padding-block: 3.5rem 2.5rem; }
.surtitre {
  font-size: 0.78rem; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--sti-secondaire);
  margin-bottom: 0.4rem;
}
.page-intro { max-width: 46rem; font-size: 1.08rem; }

.grille-2 { grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr)); margin-top: 1.4rem; }

.liste-prestations {
  list-style: none; margin: 0 0 1.2em; padding: 0;
  max-width: 46rem;
}
.liste-prestations li {
  padding: 0.7rem 0 0.7rem 1.4rem;
  position: relative;
  border-bottom: 1px solid var(--sti-bordure);
}
.liste-prestations li:last-child { border-bottom: 0; }
.liste-prestations li::before {
  content: "";
  position: absolute; left: 0; top: 1.35rem;
  width: 0.55rem; height: 2px;
  background: var(--sti-cta);
}

/* ---------- 12. Formulaires et messages ---------------------------------- */
.grille-3 { grid-template-columns: repeat(auto-fit, minmax(15rem, 1fr)); }
.carte-action { margin: 0.9rem 0 0; }

.message {
  max-width: 46rem;
  padding: 0.9rem 1.2rem;
  border-radius: 3px;
  margin-bottom: 1.4rem;
}
.message-succes {
  background: #EFF5F0;
  border: 1px solid var(--sti-vert-pale);
  border-left: 3px solid var(--sti-secondaire);
  color: var(--sti-secondaire);
}
.message-erreur {
  background: #FBF0EE;
  border: 1px solid #EBCFC9;
  border-left: 3px solid var(--sti-cta);
  color: #8C2210;
}

.formulaire-module {
  max-width: 46rem;
  margin-top: 2rem;
  padding: 1.6rem;
  background: var(--sti-surface);
  border: 1px solid var(--sti-bordure);
  border-top: 2px solid var(--sti-primaire);
  border-radius: 4px;
}

.champ { display: flex; flex-direction: column; gap: 0.3rem; margin: 0 0 1rem; }
.champ label { font-size: 0.9rem; font-weight: 600; }
.champ input[type="text"],
.champ input[type="email"] {
  font-family: var(--sti-texte-police);
  font-size: 1rem;
  color: var(--sti-texte);
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--sti-bordure);
  border-radius: 3px;
  background: var(--sti-surface);
  transition: border-color var(--sti-transition), box-shadow var(--sti-transition);
}
.champ input:focus {
  outline: none;
  border-color: var(--sti-primaire);
  box-shadow: 0 0 0 3px rgba(13, 75, 142, 0.12);
}
.champs-ligne { display: grid; gap: 0 1rem; grid-template-columns: 1fr 1fr; }
@media (max-width: 40em) { .champs-ligne { grid-template-columns: 1fr; } }

.champ-note { font-size: 0.82rem; color: var(--sti-texte-secondaire); }
.obligatoire { color: var(--sti-cta); }

.champ-consentement label {
  display: flex; gap: 0.6rem; align-items: flex-start;
  font-size: 0.88rem; font-weight: 400;
  color: var(--sti-texte-secondaire);
}
.champ-consentement input { margin-top: 0.25rem; }

/* Honeypot : hors ecran, jamais display:none (certains robots le detectent) */
.champ-piege {
  position: absolute; left: -9999px; top: auto;
  width: 1px; height: 1px; overflow: hidden;
}

.suggestions {
  list-style: none; margin: -0.6rem 0 1rem; padding: 0;
  max-width: 46rem;
  background: var(--sti-surface);
  border: 1px solid var(--sti-bordure);
  border-radius: 3px;
  box-shadow: 0 8px 20px rgba(9, 55, 102, 0.08);
}
.suggestions li {
  padding: 0.55rem 0.9rem;
  cursor: pointer;
  font-size: 0.92rem;
  border-bottom: 1px solid var(--sti-bordure);
}
.suggestions li:last-child { border-bottom: 0; }
.suggestions li:hover { background: var(--sti-fond); color: var(--sti-primaire-fonce); }

/* ---------- 13. Fiches de references ------------------------------------- */
.fiche-reference { display: flex; flex-direction: column; gap: 0.5rem; }
.fiche-type {
  margin: 0;
  font-size: 0.72rem; letter-spacing: 0.08em; text-transform: uppercase;
  color: var(--sti-secondaire);
}
.fiche-chiffre {
  margin: 0;
  font-size: 2.2rem; font-weight: 600; line-height: 1.1;
  color: var(--sti-primaire-fonce);
}
.fiche-unite {
  display: block;
  font-size: 0.85rem; font-weight: 400;
  color: var(--sti-texte-secondaire);
}
.fiche-mission { margin: 0; font-size: 0.95rem; color: var(--sti-texte); flex-grow: 1; }
.fiche-meta {
  margin: 0; padding-top: 0.6rem;
  border-top: 1px solid var(--sti-bordure);
  font-size: 0.82rem; color: var(--sti-texte-secondaire);
}

/* ---------- 14. Page contact --------------------------------------------- */
.contact-colonnes {
  display: grid; gap: 2.5rem;
  grid-template-columns: 3fr 2fr;
  align-items: start;
}
@media (max-width: 55em) { .contact-colonnes { grid-template-columns: 1fr; } }
.formulaire-contact { margin-top: 0; max-width: none; }
.champ textarea {
  font-family: var(--sti-texte-police);
  font-size: 1rem;
  color: var(--sti-texte);
  padding: 0.55rem 0.75rem;
  border: 1px solid var(--sti-bordure);
  border-radius: 3px;
  background: var(--sti-surface);
  resize: vertical;
  transition: border-color var(--sti-transition), box-shadow var(--sti-transition);
}
.champ textarea:focus {
  outline: none;
  border-color: var(--sti-primaire);
  box-shadow: 0 0 0 3px rgba(13, 75, 142, 0.12);
}
.contact-coordonnees {
  background: var(--sti-surface);
  border: 1px solid var(--sti-bordure);
  border-top: 2px solid var(--sti-secondaire);
  border-radius: 4px;
  padding: 1.6rem;
}
.contact-coordonnees h2 { font-size: 1.15rem; }

/* ---------- 15. Mentions legales ------------------------------------------ */
.mentions { max-width: 46rem; }
.mentions h2 { font-size: 1.15rem; margin-top: 1.8em; }
.mentions h2:first-child { margin-top: 0; }

/* ---------- 16. Mouvement reduit ---------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    transition-duration: 0.01ms !important;
    animation-duration: 0.01ms !important;
  }
}