/* O'Vestiaire — en-tête, menu téléphone, barre d'action, pied de page, rideau de transition */

/* ---------- En-tête ---------- */
.site-header {
  position: fixed; inset: 0 0 auto; z-index: 50; height: var(--alv-header-h);
  display: flex; align-items: center; gap: 40px; padding-inline: clamp(20px, 4vw, 58px);
  transition: height .5s var(--alv-ease-out), background-color .5s, transform .55s var(--alv-ease-out), box-shadow .5s;
}
.site-header::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px;
  background: linear-gradient(90deg, transparent, rgba(247, 219, 142, .5), transparent);
  opacity: 0; transition: opacity .5s;
}
.site-header.is-scrolled { height: var(--alv-header-h-compact); background: rgba(10, 9, 4, .86); backdrop-filter: blur(14px) saturate(1.2); box-shadow: 0 18px 40px -24px rgba(0, 0, 0, .9); }
.site-header.is-scrolled::after { opacity: 1; }
.site-header.is-hidden { transform: translateY(-100%); }
.site-header.is-hidden:has(:focus-visible) { transform: none; } /* le focus clavier ramène l'en-tête */
.site-header.is-solid { background: var(--alv-bg); }
.site-header .logo { display: block; flex: none; }
.site-header .logo img { height: var(--alv-logo-h); transition: height .5s var(--alv-ease-out); }
.site-header.is-scrolled .logo img { height: var(--alv-logo-h-compact); }

.nav { margin-left: auto; display: flex; align-items: center; gap: clamp(18px, 2.4vw, 36px); }
.nav a:not(.btn) {
  position: relative; font: 600 14px/1 var(--alv-font-label); letter-spacing: .1em; text-transform: uppercase; padding: 8px 0;
}
.nav a:not(.btn)::after {
  content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 2px; background: var(--alv-gold-fill);
  transform: scaleX(0); transform-origin: left; transition: transform .45s var(--alv-ease-out);
}
.nav a:not(.btn):hover::after, .nav a[aria-current="page"]::after { transform: scaleX(1); }
.nav a[aria-current="page"] { color: var(--alv-gold-solid); }
.nav .btn { margin-left: 12px; }

.burger { display: none; width: 48px; height: 48px; margin-left: auto; position: relative; border-radius: 12px; border: 1px solid var(--alv-line); }
.burger span { position: absolute; left: 13px; right: 13px; height: 2px; background: var(--alv-ink); border-radius: 2px; transition: transform .45s var(--alv-ease-out), opacity .3s; }
.burger span:nth-child(1) { top: 17px; }
.burger span:nth-child(2) { top: 23px; }
.burger span:nth-child(3) { top: 29px; }
.menu-open .burger span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-open .burger span:nth-child(2) { opacity: 0; }
.menu-open .burger span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

/* ---------- Menu plein écran (téléphone) ---------- */
.mobile-menu {
  position: fixed; inset: 0; z-index: 45; background: var(--alv-bg);
  display: flex; flex-direction: column; gap: 8px;
  padding: calc(var(--alv-header-h) + 20px) 28px 120px;
  overflow-y: auto; overscroll-behavior: contain; /* écran court : le menu défile, rien n'est rogné ni écrasé */
  clip-path: inset(0 0 100% 0); visibility: hidden;
  transition: clip-path .7s var(--alv-ease-in-out), visibility 0s .7s;
}
/* Centrage vertical sans rogner le haut quand ça déborde : les marges auto se partagent la place libre, et valent 0 s'il n'y en a pas. */
.mobile-menu > :first-child { margin-top: auto; }
.mobile-menu > :last-child { margin-bottom: auto; }
.mobile-menu > * { flex-shrink: 0; } /* aucun élément du menu ne rétrécit : le bouton « Réserver » garde sa hauteur */
.mobile-menu::before { content: ""; position: fixed; inset: 0; background: url("../img/marque/trame-courbes.jpg") 70% center / cover; mix-blend-mode: screen; opacity: .45; pointer-events: none; }
.menu-open .mobile-menu { clip-path: inset(0 0 0 0); visibility: visible; transition: clip-path .7s var(--alv-ease-in-out); }
.mobile-menu a.m-link {
  position: relative; font: 400 clamp(38px, 11vw, 54px)/1 var(--alv-font-display); text-transform: uppercase; letter-spacing: -.04em;
  color: var(--alv-cream); padding: 10px 0; border-bottom: 1px solid var(--alv-hair);
  opacity: 0; transform: translateY(30px); transition: opacity .5s, transform .7s var(--alv-ease-out);
}
.menu-open .mobile-menu a.m-link { opacity: 1; transform: none; }
.menu-open .mobile-menu a.m-link:nth-of-type(1) { transition-delay: .25s; }
.menu-open .mobile-menu a.m-link:nth-of-type(2) { transition-delay: .32s; }
.menu-open .mobile-menu a.m-link:nth-of-type(3) { transition-delay: .39s; }
.menu-open .mobile-menu a.m-link:nth-of-type(4) { transition-delay: .46s; }
.mobile-menu a.m-link[aria-current="page"] { background: var(--alv-gold); -webkit-background-clip: text; background-clip: text; color: transparent; }
.mobile-menu .m-foot { position: relative; margin-top: 28px; display: flex; flex-direction: column; gap: 6px; font: 600 15px/1.4 var(--alv-font-label); letter-spacing: .06em; opacity: 0; transition: opacity .6s .55s; }
.menu-open .mobile-menu .m-foot { opacity: 1; }
.menu-open { overflow: hidden; }
.menu-open .site-header { background: var(--alv-bg); } /* le menu défile sous l'en-tête : les liens ne passent plus derrière le logo */

/* ---------- Barre d'action téléphone ---------- */
.action-bar {
  position: fixed; left: 12px; right: 12px; bottom: max(12px, env(safe-area-inset-bottom)); z-index: 40;
  display: none; grid-template-columns: 1fr 1fr 1.25fr; gap: 6px; padding: 6px;
  background: rgba(16, 14, 9, .9); backdrop-filter: blur(14px); border: 1px solid var(--alv-hair); border-radius: 18px;
  box-shadow: 0 20px 40px -12px rgba(0, 0, 0, .85);
  transform: translateY(140%); transition: transform .6s var(--alv-ease-out);
}
.action-bar.is-visible { transform: none; }
.action-bar a {
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 4px; height: 56px; border-radius: 13px;
  font: 700 11px/1 var(--alv-font-label); letter-spacing: .12em; text-transform: uppercase;
}
.action-bar a svg { width: 19px; height: 19px; }
.action-bar a:active { transform: scale(.96); }
.action-bar .is-primary { background: var(--alv-red); color: #fff; }

/* ---------- Pied de page ---------- */
.site-footer { position: relative; background: var(--alv-bg-raised); border-top: 1px solid var(--alv-hair); padding: 72px 0 34px; overflow: hidden; }
.site-footer .trame-bg { position: absolute; inset: 0; background: url("../img/marque/trame-courbes.jpg") right bottom / cover; mix-blend-mode: screen; opacity: .35; pointer-events: none; }
.footer-grid { position: relative; display: grid; grid-template-columns: 1.3fr 1fr 1fr; gap: 48px; align-items: start; }
.site-footer .logo img { height: var(--alv-logo-h-footer); }
.footer-brand p { margin: 20px 0 24px; max-width: 30ch; color: var(--alv-ink-soft); font-size: 15px; }
.footer-col h3 { font-size: 24px; letter-spacing: -.01em; margin-bottom: 18px; }
.footer-col ul { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; font-size: 15px; }
.footer-col a { transition: color .3s; }
.footer-col a:hover { color: var(--alv-gold-solid); }
.footer-bottom { position: relative; margin-top: 56px; padding-top: 22px; border-top: 1px solid var(--alv-hair); display: flex; justify-content: space-between; gap: 20px; flex-wrap: wrap; font: 700 12px/1.5 var(--alv-font-label); letter-spacing: .12em; text-transform: uppercase; color: var(--alv-ink-soft); }
.footer-bottom a:hover { color: var(--alv-ink); }
.footer-bottom__liens { display: flex; gap: 6px 22px; flex-wrap: wrap; }

/* ---------- Rideau de transition entre pages et intro ---------- */
.curtain {
  position: fixed; inset: 0; z-index: 100; pointer-events: none;
  background: var(--alv-bg); display: grid; place-items: center;
  transform: translateY(100%);
}
.curtain::before { content: ""; position: absolute; inset: 0; background: url("../img/marque/trame-courbes.jpg") center / cover; mix-blend-mode: screen; opacity: .5; }
.curtain__logo { position: relative; width: clamp(120px, 14vw, 190px); overflow: hidden; }
.curtain__logo img { width: 100%; }
.curtain__logo::after {
  content: ""; position: absolute; inset: -20% -60%;
  background: linear-gradient(105deg, transparent 40%, rgba(255, 246, 220, .55) 50%, transparent 60%);
  transform: translateX(-70%); animation: alv-logo-sheen 1.3s var(--alv-ease-in-out) .15s infinite;
  mix-blend-mode: overlay;
}
@keyframes alv-logo-sheen { to { transform: translateX(70%); } }
html.is-entering .curtain, html.is-intro .curtain { transform: none; }
html.no-js .curtain { display: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1080px) {
  .nav { gap: 18px; }
  .nav a:not(.btn) { font-size: 13px; }
}
@media (max-width: 900px) {
  .nav { display: none; }
  .burger { display: block; }
  .site-header .btn-head { display: none; }
  .action-bar { display: grid; }
  .footer-grid { grid-template-columns: 1fr; gap: 36px; }
  .site-footer { padding-bottom: 120px; }
}

/* ---------- Peaufinage 05/10 ---------- */
.mobile-menu .m-cta { position: relative; align-self: flex-start; margin-top: 28px; opacity: 0; transition: opacity .6s .5s; }
.menu-open .mobile-menu .m-cta { opacity: 1; }
.mobile-menu .m-foot a { display: inline-flex; align-items: center; min-height: 44px; }
@media (max-width: 900px) {
  .footer-col a { display: inline-flex; align-items: center; min-height: 44px; }
  .footer-col li + li { margin-top: 0; }
  .footer-bottom a { display: inline-flex; align-items: center; min-height: 44px; }
}

.site-header.is-hidden .btn-head { box-shadow: none; } /* plus de lueur rouge en haut de l’écran quand l’en-tête est masqué */