/* ==========================================================================
   BYANSEL — Layout : conteneur, bandeau, en-tête, navigation, pied de page
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

/* --- Bandeau professionnel ------------------------------------------- */

.probanner {
  background: var(--navy-900);
  color: var(--white);
  font-size: var(--fs-sm);
  font-weight: 500;
  letter-spacing: 0.01em;
}

.probanner__inner {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  min-height: 2.25rem;
  padding-block: var(--space-1);
  text-align: center;
}

.probanner .icon {
  color: var(--coral);
}

/* --- En-tête ----------------------------------------------------------- */

.header {
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  /* Fond opaque volontaire : un backdrop-filter ferait de l'en-tête le bloc
     conteneur du tiroir mobile (position: fixed) et casserait son affichage. */
  background: var(--white);
  border-bottom: var(--rule);
  transition: box-shadow var(--dur-ui) var(--ease-out);
}

.header.is-stuck {
  box-shadow: var(--shadow-md);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-5);
  min-height: 4.75rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  flex: none;
}

.brand__mark {
  width: 2.75rem;
  height: 2.75rem;
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.brand__name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.375rem;
  letter-spacing: 0.08em;
}

.brand__sub {
  font-size: var(--fs-xs);
  color: var(--color-text-muted);
  margin-top: 0.2rem;
}

.brand--light {
  color: var(--white);
}

.brand--light .brand__sub {
  color: var(--slate-300);
}

/* Navigation (desktop en ligne, mobile en tiroir) */

.nav__list {
  display: flex;
  gap: var(--space-1);
}

.nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem;
  padding: var(--space-2) var(--space-3);
  font-weight: 500;
  font-size: 0.9rem;
  white-space: nowrap;
  color: var(--navy);
  border-radius: var(--radius-sm);
  transition: color var(--dur-hover) var(--ease-hover);
}

/* Soulignement corail, dessiné depuis la gauche */
.nav__link::after {
  content: "";
  position: absolute;
  left: var(--space-3);
  right: var(--space-3);
  bottom: 0.45rem;
  height: 2px;
  background: var(--coral);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-ui) var(--ease-out);
}

.nav__link[aria-current="true"]::after {
  transform: scaleX(1);
}

@media (hover: hover) and (pointer: fine) {
  .nav__link:hover::after {
    transform: scaleX(1);
  }
}

.nav__actions {
  display: none;
}

.header__side {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.header__phone {
  display: none;
  align-items: center;
  gap: var(--space-2);
  min-height: 2.75rem;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--navy);
  white-space: nowrap;
  transition: color var(--dur-hover) var(--ease-hover);
}

@media (hover: hover) and (pointer: fine) {
  .header__phone:hover {
    color: var(--coral-deep);
  }
}

.header .header__cta {
  display: none;
  padding-inline: 1rem;
}

.nav-toggle {
  display: inline-grid;
  place-items: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: var(--radius-sm);
  color: var(--navy);
}

.nav-toggle .icon {
  width: 1.5rem;
  height: 1.5rem;
  grid-area: 1 / 1;
  transition: opacity var(--dur-press) var(--ease-out), transform var(--dur-press) var(--ease-out);
}

.nav-toggle__close {
  opacity: 0;
  transform: rotate(-45deg) scale(0.8);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__open {
  opacity: 0;
  transform: rotate(45deg) scale(0.8);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__close {
  opacity: 1;
  transform: none;
}

.nav-backdrop {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-drawer) - 1);
  background: rgba(11, 29, 47, 0.45);
  opacity: 0;
  transition: opacity var(--dur-drawer) var(--ease-out);
}

.nav-backdrop.is-visible {
  opacity: 1;
}

/* Tiroir mobile et tablette (jusqu'à 1279 px : l'en-tête complet ne tient pas en dessous) */
@media (max-width: 79.99em) {
  .nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    z-index: var(--z-drawer);
    width: min(22rem, 88vw);
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    padding: 5.5rem var(--space-6) var(--space-6);
    background: var(--white);
    box-shadow: var(--shadow-lg);
    transform: translateX(100%);
    visibility: hidden;
    transition: transform var(--dur-drawer) var(--ease-drawer), visibility 0s linear var(--dur-drawer);
  }

  .nav.is-open {
    transform: translateX(0);
    visibility: visible;
    transition: transform var(--dur-drawer) var(--ease-drawer), visibility 0s;
  }

  .nav__list {
    flex-direction: column;
    gap: 0;
    border-top: var(--rule);
  }

  .nav__list li {
    border-bottom: var(--rule);
    opacity: 0;
    transform: translateX(12px);
    transition: opacity var(--dur-ui) var(--ease-out), transform var(--dur-ui) var(--ease-out);
  }

  .nav.is-open .nav__list li {
    opacity: 1;
    transform: none;
  }

  .nav.is-open .nav__list li:nth-child(1) { transition-delay: 60ms; }
  .nav.is-open .nav__list li:nth-child(2) { transition-delay: 100ms; }
  .nav.is-open .nav__list li:nth-child(3) { transition-delay: 140ms; }
  .nav.is-open .nav__list li:nth-child(4) { transition-delay: 180ms; }
  .nav.is-open .nav__list li:nth-child(5) { transition-delay: 220ms; }

  .nav__link {
    width: 100%;
    min-height: 3.25rem;
    padding-inline: 0;
    font-family: var(--font-heading);
    font-weight: 600;
    font-size: var(--fs-md);
  }

  .nav__link::after {
    left: 0;
    right: auto;
    width: 1.5rem;
    bottom: 0.9rem;
  }

  .nav__actions {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
  }

  /* Le bouton burger passe au-dessus du tiroir */
  .nav-toggle {
    position: relative;
    z-index: calc(var(--z-drawer) + 1);
  }
}

/* Desktop */
@media (min-width: 80em) {
  .nav-toggle,
  .nav-backdrop {
    display: none;
  }

  .header .header__cta {
    display: inline-flex;
  }
}

@media (min-width: 96em) {
  .header__phone {
    display: inline-flex;
  }
}

/* --- Pied de page ------------------------------------------------------ */

.footer {
  background: var(--navy-900);
  color: var(--slate-300);
  padding-block: var(--space-8) var(--space-6);
}

.footer__grid {
  display: grid;
  gap: var(--space-7);
  padding-bottom: var(--space-7);
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

@media (min-width: 48em) {
  .footer__grid {
    grid-template-columns: 1.4fr 1fr 1fr;
  }
}

.footer__tagline {
  margin-top: var(--space-4);
  max-width: 32ch;
  color: var(--white);
}

.footer__heading {
  font-size: var(--fs-sm);
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--white);
  margin-bottom: var(--space-4);
}

.footer__links {
  display: grid;
}

.footer__links a {
  display: inline-flex;
  align-items: center;
  min-height: 2.75rem; /* cible tactile */
  color: var(--slate-300);
  transition: color var(--dur-hover) var(--ease-hover);
}

@media (hover: hover) and (pointer: fine) {
  .footer__links a:hover {
    color: var(--white);
  }
}

.footer__soon {
  display: block;
  padding-block: var(--space-2);
  font-size: var(--fs-sm);
  color: rgba(184, 196, 211, 0.7);
}

.footer__address p {
  display: flex;
  gap: var(--space-2);
  align-items: flex-start;
  margin-bottom: var(--space-3);
}

.footer__address .icon {
  margin-top: 0.3rem;
  color: var(--coral);
}

.footer__address a {
  color: var(--white);
  text-decoration: underline;
  text-decoration-color: rgba(255, 255, 255, 0.35);
  text-underline-offset: 0.2em;
  transition: text-decoration-color var(--dur-hover) var(--ease-hover);
}

@media (hover: hover) and (pointer: fine) {
  .footer__address a:hover {
    text-decoration-color: var(--coral);
  }
}

.footer .placeholder {
  color: rgba(184, 196, 211, 0.75);
}

.footer__legal {
  padding-top: var(--space-5);
  font-size: var(--fs-sm);
  display: grid;
  gap: var(--space-2);
}