/* ================================
   1. Variables graphiques
================================ */

:root {
  --bleu: #004c68;
  --rose: #d12b51;
  --sable: #d1bdaf;
  --creme: #fbf8f5;
  --blanc: #ffffff;

  --largeur-contenu: 1180px;
  --rayon-bouton: 999px;

  --police-principale: "Segoe UI", system-ui, Arial, sans-serif;
}

/* ================================
   2. Base et réinitialisation
================================ */

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--creme);
  color: var(--bleu);
  font-family: var(--police-principale);
  font-size: 1rem;
  font-weight: 400;
  line-height: 1.6;
}

a {
  color: inherit;
}

/* Lien d’évitement commun à toutes les pages */

.lien-evitement {
  position: fixed;
  z-index: 100;
  top: 0.75rem;
  left: 0.75rem;
  padding: 0.65rem 1rem;
  border-radius: 0.35rem;
  background-color: var(--rose);
  color: var(--blanc);
  font-weight: 600;
  transform: translateY(-150%);
  transition: transform 160ms ease;
}

.lien-evitement:focus {
  transform: translateY(0);
}

/* ================================
   3. Mise en page générale
================================ */

.container {
  width: min(100% - 2.5rem, var(--largeur-contenu));
  margin-inline: auto;
}

.section {
  padding-block: clamp(5rem, 10vw, 8rem);
}

.sur-titre {
  margin: 0 0 1.5rem;
  color: var(--rose);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.09em;
  line-height: 1.4;
  text-transform: uppercase;
}

/* ================================
   4. En-tête et navigation
================================ */

.site-header {
  position: absolute;
  z-index: 10;
  top: 0;
  left: 0;
  width: 100%;
  padding-block: 1.5rem;
}

.header-inner {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.identite {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.1;
  text-decoration: none;
}

.nom {
  font-size: 1.125rem;
  font-weight: 600;
}

.marque {
  margin-top: 0.35rem;
  color: var(--rose);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.navigation ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.75rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.navigation a {
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  text-underline-offset: 0.3rem;
}

.navigation a:hover {
  color: var(--rose);
}

.navigation a:focus-visible {
  outline: 3px solid var(--sable);
  outline-offset: 4px;
}

.navigation-cta {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.7rem;
  padding: 0.65rem 1.15rem;
  border-radius: var(--rayon-bouton);
  background-color: var(--rose);
  color: var(--blanc);
  font-size: 0.9rem;
  font-weight: 700;
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
}

.navigation-cta:hover {
  filter: brightness(0.9);
}

.navigation-cta:focus-visible {
  outline: 3px solid var(--sable);
  outline-offset: 4px;
}

/* ================================
   5. Introduction de l’accueil
================================ */

.hero {
  display: grid;
  min-height: 100vh;
  min-height: 100svh;
  align-items: center;
  padding-block: clamp(6rem, 14vw, 11rem);
}

.hero .container {
  max-width: 900px;
}

h1 {
  max-width: 14ch;
  margin: 0;
  font-size: clamp(2.75rem, 7vw, 5.75rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.02;
}

.introduction {
  max-width: 720px;
  margin: 2rem 0 2.5rem;
  font-size: clamp(1.125rem, 2vw, 1.375rem);
}

.bouton {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.25rem;
  padding: 0.875rem 1.6rem;
  border-radius: var(--rayon-bouton);
  background-color: var(--rose);
  color: var(--blanc);
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  transition:
    transform 180ms ease,
    filter 180ms ease;
}

.bouton:hover {
  filter: brightness(0.9);
  transform: translateY(-2px);
}

.bouton:focus-visible {
  outline: 3px solid var(--sable);
  outline-offset: 4px;
}

.bouton-secondaire {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 3.25rem;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--bleu);
  color: var(--bleu);
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
}

.bouton-secondaire:hover {
  border-color: var(--rose);
  color: var(--rose);
}

.bouton-secondaire:focus-visible {
  outline: 3px solid var(--sable);
  outline-offset: 4px;
}

/* ================================
   6. Services et offres
================================ */

.services {
  background-color: var(--blanc);
}

.section-header {
  max-width: 1050px;
  margin-bottom: 3.5rem;
}

.section-header h2 {
  margin: 0;
  font-size: clamp(2.25rem, 5vw, 4.25rem);
  font-weight: 600;
  letter-spacing: -0.035em;
  line-height: 1.08;
  text-wrap: balance;
}

.introduction-section {
  max-width: 680px;
  margin: 1.5rem 0 0;
  font-size: clamp(1.0625rem, 1.6vw, 1.25rem);
}

.offres-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.5rem;
}

.offre {
  padding: clamp(1.75rem, 3vw, 2.5rem);
  border: 1px solid var(--sable);
  border-radius: 0.75rem;
  background-color: var(--creme);
}

.numero-offre {
  margin: 0 0 2rem;
  color: var(--rose);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.offre h3 {
  margin: 0;
  font-size: 1.5rem;
  line-height: 1.2;
  text-wrap: balance;
}

.prix {
  margin: 0.75rem 0 1.5rem;
  color: var(--rose);
  font-weight: 600;
}

.offre ul {
  margin: 1.5rem 0 0;
  padding-left: 1.25rem;
}

.offre li + li {
  margin-top: 0.5rem;
}

.offre > .bouton-secondaire,
.liens-offre {
  margin-top: 1.5rem;
}

.liens-offre {
  display: flex;
  align-items: flex-start;
  flex-direction: column;
  gap: 0.75rem;
}

.service-complementaire {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem 2rem;
  margin-top: 1.5rem;
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--sable);
  border-radius: 0.75rem;
  background-color: var(--creme);
}

.service-complementaire p {
  max-width: 680px;
  margin: 0;
}

/* ================================
   7. Réalisations
================================ */

.realisations {
  overflow: hidden;
  background-color: var(--creme);
}

.realisations-entete {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, 0.6fr);
  align-items: end;
  gap: clamp(3rem, 8vw, 8rem);
  margin-bottom: clamp(4rem, 8vw, 7rem);
}

.realisations-entete h2 {
  max-width: 850px;
  margin: 0;
  font-size: clamp(2.75rem, 6vw, 5.5rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.02;
  text-wrap: balance;
}

.realisations-introduction {
  max-width: 420px;
  margin: 0 0 0.5rem auto;
  font-size: 1.0625rem;
  line-height: 1.7;
  text-align: right;
}

.realisations-liste {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  align-items: start;
  gap: clamp(2rem, 4vw, 4rem);
}

.projet-01 {
  margin-top: 0;
}

.projet-02 {
  margin-top: clamp(2rem, 3vw, 3rem);
}

.projet-03 {
  margin-top: clamp(4rem, 6vw, 6rem);
}

.realisation-image {
  position: relative;
  display: block;
  overflow: hidden;
  border-radius: 0.75rem;
  background-color: var(--sable);
}

.realisation-image::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 4px;
  background-color: var(--rose);
  content: "";
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 300ms ease;
}

.realisation-image img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 8 / 5;
  object-fit: cover;
  transition: transform 350ms ease;
}

.realisation-image:hover img {
  transform: scale(1.018);
}

.realisation-image:hover::after,
.realisation-image:focus-visible::after {
  transform: scaleX(1);
}

.realisation-image:focus-visible {
  outline: 3px solid var(--rose);
  outline-offset: 5px;
}

.realisation-informations {
  display: grid;
  grid-template-columns: 3rem 1fr;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.numero-projet {
  margin: 0.25rem 0 0;
  color: var(--rose);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.realisation h3 {
  margin: 0;
  font-size: clamp(1.5rem, 2vw, 2rem);
  line-height: 1.15;
  text-wrap: balance;
}

.categorie-projet {
  margin: 0.65rem 0 0;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.03em;
}

.mission-projet {
  margin: 0.75rem 0 0;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.0625rem;
  font-style: italic;
  line-height: 1.55;
}



/* ================================
   8. Méthode
================================ */

.methode {
  background-color: var(--blanc);
}

.methode-entete {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(280px, 0.65fr);
  align-items: end;
  gap: clamp(3rem, 8vw, 8rem);
  margin-bottom: clamp(4rem, 8vw, 7rem);
}

.methode-entete h2 {
  max-width: 900px;
  margin: 0;
  font-size: clamp(2.5rem, 5vw, 4.75rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.04;
  text-wrap: balance;
}

.methode-introduction {
  max-width: 420px;
  margin: 0 0 0.5rem auto;
  font-size: 1.0625rem;
  line-height: 1.7;
  text-align: right;
}

.methode-etapes {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  margin: 0;
  padding: 0;
  list-style: none;
}

.methode-etape {
  padding: 2rem clamp(1.25rem, 2.5vw, 2rem);
  border-top: 1px solid var(--sable);
  border-right: 1px solid var(--sable);
}

.methode-etape:first-child {
  padding-left: 0;
}

.methode-etape:last-child {
  padding-right: 0;
  border-right: 0;
}

.numero-etape {
  margin: 0 0 3rem;
  color: var(--rose);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.1em;
}

.methode-etape h3 {
  margin: 0;
  font-size: 1.4rem;
  line-height: 1.25;
  text-wrap: balance;
}

.methode-etape > p:last-child {
  margin: 1.25rem 0 0;
}

/* ================================
   9. Questions fréquentes
================================ */

.faq-accueil {
  background-color: var(--creme);
}

.faq-accueil-grille {
  display: grid;
  grid-template-columns: minmax(250px, .7fr) minmax(0, 1.3fr);
  gap: clamp(3rem, 9vw, 8rem);
}

.faq-accueil h2 {
  max-width: 15ch;
  margin: 0;
  font-size: clamp(2.35rem, 5vw, 4.5rem);
  font-weight: 600;
  letter-spacing: -.04em;
  line-height: 1.05;
  text-wrap: balance;
}

.faq-accueil header > p:last-child {
  max-width: 520px;
  margin: 1.5rem 0 0;
}

.faq-accueil-liste {
  border-top: 4px solid var(--rose);
}

.faq-accueil-liste details {
  border-bottom: 1px solid var(--sable);
}

.faq-accueil-liste summary {
  padding-block: 1.5rem;
  font-size: clamp(1.05rem, 1.7vw, 1.25rem);
  font-weight: 700;
  cursor: pointer;
}

.faq-accueil-liste details[open] summary {
  color: var(--rose);
}

.faq-accueil-liste details > p {
  max-width: 720px;
  margin: 0;
  padding: 0 2rem 1.5rem 0;
}

.faq-accueil-liste a {
  font-weight: 600;
  text-underline-offset: .25rem;
}

/* ================================
   10. À propos
================================ */

.a-propos {
  background-color: var(--bleu);
  color: var(--creme);
}

.a-propos-grille {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  align-items: start;
  gap: clamp(3rem, 9vw, 9rem);
}

.a-propos .sur-titre {
  color: var(--sable);
}

.a-propos-entete h2 {
  max-width: 650px;
  margin: 0;
  font-size: clamp(2.75rem, 5vw, 4.75rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1.04;
  text-wrap: balance;
}

.a-propos-contenu {
  max-width: 650px;
}

.a-propos-contenu > p {
  margin: 0 0 1.5rem;
}

.a-propos-introduction {
  font-size: clamp(1.35rem, 2.5vw, 1.8rem);
  font-weight: 600;
  line-height: 1.35;
}

.a-propos-reperes {
  display: grid;
  gap: 0;
  margin: 3rem 0;
}

.a-propos-reperes div {
  display: grid;
  grid-template-columns: minmax(140px, 0.65fr) minmax(0, 1fr);
  gap: 1.5rem;
  padding-block: 1.25rem;
  border-top: 1px solid rgb(255 255 255 / 25%);
}

.a-propos-reperes div:last-child {
  border-bottom: 1px solid rgb(255 255 255 / 25%);
}

.a-propos-reperes dt {
  color: var(--sable);
  font-weight: 600;
}

.a-propos-reperes dd {
  margin: 0;
}

.a-propos-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem 1.5rem;
}

.a-propos-actions .bouton-secondaire {
  border-color: var(--creme);
  color: var(--creme);
}

.a-propos-actions .bouton-secondaire:hover {
  border-color: var(--sable);
  color: var(--sable);
}
/* ================================
   11. Pied de page
================================ */

.site-footer {
  border-top: 1px solid var(--sable);
  background-color: var(--creme);
  color: var(--bleu);
}

.site-footer .container {
  padding-block:
    clamp(3.5rem, 7vw, 5.5rem)
    1.5rem;
}

.footer-principal {
  display: grid;
  grid-template-columns:
    minmax(0, 1.3fr)
    minmax(160px, 0.6fr)
    minmax(230px, 0.8fr);
  gap: clamp(2.5rem, 7vw, 7rem);
  padding-bottom: clamp(3rem, 6vw, 5rem);
}

/* Identité */

.footer-identite {
  max-width: 440px;
}

.footer-marque {
  display: inline-flex;
  flex-direction: column;
  line-height: 1.1;
  text-decoration: none;
}

.footer-marque span {
  font-size: clamp(1.5rem, 2.5vw, 2rem);
  font-weight: 600;
}

.footer-marque small {
  margin-top: 0.45rem;
  color: var(--rose);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.footer-identite p {
  max-width: 38rem;
  margin: 1.5rem 0 0;
}

/* Titres */

.footer-titre {
  margin: 0 0 1.25rem;
  color: var(--rose);
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

/* Navigation */

.footer-navigation ul,
.footer-secondaire ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

.footer-navigation li + li {
  margin-top: 0.65rem;
}

.footer-navigation a,
.footer-secondaire a,
.footer-lien-contact {
  text-decoration-thickness: 1px;
  text-underline-offset: 0.3rem;
}

.footer-navigation a:hover,
.footer-secondaire a:hover,
.footer-lien-contact:hover {
  color: var(--rose);
}

/* Coordonnées */

.footer-contact address {
  font-style: normal;
}

.footer-contact address p {
  margin: 0;
}

.footer-contact address p + p {
  margin-top: 0.25rem;
}

.footer-coordonnees {
  display: grid;
  gap: 0.25rem;
  margin: 1rem 0 0;
}

.footer-coordonnees a {
  width: fit-content;
  text-underline-offset: 0.25rem;
}

.footer-lien-contact {
  display: inline-flex;
  gap: 0.4rem;
  margin-top: 1.5rem;
  color: var(--rose);
  font-weight: 600;
}

/* Ligne inférieure */

.footer-secondaire {
  display: flex;
  justify-content: space-between;
  gap: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--sable);
  font-size: 0.875rem;
}

.footer-secondaire p {
  margin: 0;
}

.footer-secondaire ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
}

/* Accessibilité clavier */

.footer-marque:focus-visible,
.footer-navigation a:focus-visible,
.footer-lien-contact:focus-visible,
.footer-secondaire a:focus-visible {
  outline: 3px solid var(--sable);
  outline-offset: 4px;
}

/* ================================
   10. Adaptation aux écrans étroits
================================ */

@media (max-width: 850px) {
  .faq-accueil-grille {
    grid-template-columns: 1fr;
  }

  .offres-grid,
  .realisations-liste {
    grid-template-columns: 1fr;
  }

  .realisations-entete {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .realisations-introduction {
    max-width: 650px;
    margin-left: 0;
    text-align: left;
  }

  .projet-01,
  .projet-02,
  .projet-03 {
    margin-top: 0;
  }
  .methode-entete {
  grid-template-columns: 1fr;
  gap: 1.75rem;
}

.methode-introduction {
  max-width: 650px;
  margin-left: 0;
  text-align: left;
}

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

.methode-etape:nth-child(2) {
  border-right: 0;
}

.methode-etape:nth-child(3) {
  padding-left: 0;
}
.footer-principal {
  grid-template-columns: 1fr 1fr;
}

.footer-identite {
  grid-column: 1 / -1;
}
}

@media (max-width: 650px) {
  .container {
    width: min(100% - 1.5rem, var(--largeur-contenu));
  }

  .site-header {
    padding-block: 1.25rem;
  }

  .header-inner {
    align-items: flex-start;
    flex-direction: column;
    gap: 1rem;
  }

  .navigation-cta {
    position: absolute;
    top: 0;
    right: 0;
  }

  .navigation ul {
    gap: 0.5rem 1rem;
  }

  .realisation-informations {
    grid-template-columns: 2rem 1fr;
    gap: 0.75rem;
  }
  .methode-etapes {
  grid-template-columns: 1fr;
}

.methode-etape,
.methode-etape:first-child,
.methode-etape:last-child,
.methode-etape:nth-child(3) {
  padding: 1.75rem 0;
  border-right: 0;
}

.numero-etape {
  margin-bottom: 1.5rem;
}
.footer-principal {
  grid-template-columns: 1fr;
}

.footer-identite {
  grid-column: auto;
}

.footer-secondaire {
  align-items: flex-start;
  flex-direction: column;
}
}

/* ================================
   11. Réduction des animations
================================ */

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .bouton,
  .lien-evitement,
  .realisation-image img,
  .realisation-image::after {
    transition: none;
  }
}