/* Chassezac Quad : en-tête (barre pleine sombre), menu plein écran, barre basse du téléphone */
.hd { position: fixed; top: var(--demobar-offset, 0px); left: 0; right: 0; z-index: 50; height: var(--hd); background: var(--c950); color: var(--k50); }
/* État défilé : filet et ombre portés par un pseudo-élément dont seule l'opacité change */
.hd::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 1px; background: var(--c700); box-shadow: 0 8px 24px -16px rgb(0 0 0 / .7); opacity: 0; transition: opacity .25s; pointer-events: none; }
.hd.is-scrolled::after, .menu-open .hd::after { opacity: 1; }
.hd-in { height: 100%; display: flex; align-items: center; }
.brand { display: flex; align-items: center; min-height: 44px; min-width: 44px; margin-right: auto; color: var(--k50); text-decoration: none; }
.logo { height: 28px; width: auto; flex: none; }
.logo-s, .logo-m { display: none; }
.nav { display: flex; align-items: center; gap: 24px; }
.nav a { display: inline-flex; align-items: center; min-height: 44px; font-weight: 600; font-size: 15.5px; color: var(--k100); text-decoration: none; background: linear-gradient(var(--or), var(--or)) 0 calc(100% - 8px) / 0 3px no-repeat; transition: background-size .25s var(--ease), color .2s; }
.nav a:hover { color: var(--blanc); background-size: 100% 3px; }
.nav a[aria-current="true"] { color: var(--blanc); background-size: 100% 3px; }
.hd-tel { display: inline-flex; align-items: center; min-height: 44px; margin-left: 32px; font-weight: 600; font-size: 15.5px; font-variant-numeric: tabular-nums; color: var(--c200); text-decoration: none; white-space: nowrap; }
.hd-tel:hover { color: var(--blanc); }
.hd-cta { display: inline-flex; align-items: center; justify-content: center; height: 44px; width: 112px; margin-left: 24px; border-radius: var(--r); background: var(--or); color: var(--noir); font: 800 16px/1 var(--f-b); text-decoration: none; transition: background .2s; }
.hd-cta:hover { background: var(--or-l); }
.hd-cta:focus-visible { outline-color: var(--blanc); }
.bouton-menu { display: none; align-items: center; gap: 8px; height: 44px; margin-left: 12px; padding: 0 4px 0 10px; border: 0; background: none; color: var(--k50); font: 700 16px/1 var(--f-b); }
.bouton-menu svg { width: 20px; height: 20px; fill: none; stroke: var(--or); stroke-width: 2.2; stroke-linecap: round; transition: transform .35s var(--ease); }
.bm-l { display: grid; }
.bm-l span { grid-area: 1 / 1; transition: opacity .2s; }
.bm-l span + span, .menu-open .bm-l span:first-child { opacity: 0; }
.menu-open .bm-l span + span { opacity: 1; }
.menu-open .bouton-menu svg { transform: rotate(-90deg); }

@media (max-width: 1179px) {
  .nav, .hd-tel { display: none; }
  .bouton-menu { display: inline-flex; }
}
@media (max-width: 767px) {
  .logo-l { display: none; }
  .logo-s { display: block; height: 26px; }
  .hd-cta { width: 104px; }
  .bouton-menu { margin-left: 8px; }
}
@media (max-width: 379px) {
  .logo-s { display: none; }
  .logo-m { display: block; height: 32px; }
}

/* Menu plein écran typographique : frère de l'en-tête, glissé dessous */
.menu { position: fixed; inset: 0; z-index: 45; padding-top: calc(var(--demobar-offset, 0px) + var(--hd)); background: var(--noir); color: var(--k50); clip-path: inset(0 0 100% 0); visibility: hidden; transition: clip-path .45s var(--ease), visibility 0s .45s; overflow-y: auto; overscroll-behavior: contain; }
.menu.is-open { clip-path: inset(0 0 0 0); visibility: visible; transition: clip-path .45s var(--ease); }
.menu-in { min-height: 100%; display: grid; grid-template-rows: minmax(140px, 1fr) auto auto; gap: 24px; padding-block: 16px calc(28px + env(safe-area-inset-bottom)); border-top: 1px solid var(--c700); }
.menu-trace { width: 100%; height: 100%; min-height: 140px; }
.menu-trace path { fill: none; stroke-linecap: round; stroke-linejoin: round; stroke-width: 3; vector-effect: non-scaling-stroke; }
.menu-trace .m1 { stroke: #ffc4a6; } .menu-trace .m2 { stroke: var(--or-l); } .menu-trace .m3 { stroke: var(--or); }
.menu-trace .ag { fill: var(--or); stroke: var(--blanc); stroke-width: 1.5; vector-effect: non-scaling-stroke; }
.menu-nav { display: grid; }
.menu-nav a { display: flex; align-items: baseline; justify-content: space-between; gap: 16px; min-height: 60px; padding-block: 10px; border-bottom: 1px solid var(--c800); text-decoration: none; }
.menu-nav b { font: 400 34px/1 var(--f-t); color: var(--blanc); }
.menu-nav span { font-size: 16px; color: var(--c300); white-space: nowrap; }
.menu-nav a:hover b, .menu-nav a[aria-current="true"] b { color: var(--or); }
.menu-ct { display: grid; gap: 2px; font-size: 16px; color: var(--c200); }
.menu-ct p { margin: 0; }
.menu-tel { display: inline-flex; align-items: center; min-height: 48px; width: max-content; font: 700 22px var(--f-b); color: var(--blanc); text-decoration: underline; text-decoration-color: var(--or); text-underline-offset: 6px; }
@media (min-width: 1180px) { .menu { display: none; } }
@media (min-width: 768px) {
  .menu-in { grid-template-columns: 1fr 1fr; grid-template-rows: 1fr auto; column-gap: clamp(32px, 6vw, 96px); align-items: end; }
  .menu-trace { grid-row: 1 / 3; align-self: stretch; }
  .menu-nav b { font-size: 40px; }
}
@media (max-height: 560px) and (max-width: 1179px) {
  .menu-in { grid-template-rows: 0 auto auto; }
  .menu-trace { display: none; }
  .menu-nav a { min-height: 52px; }
  .menu-nav b { font-size: 26px; }
}

/* Barre basse du téléphone */
.bb { display: none; }
@media (max-width: 899px) {
  .bb { position: fixed; left: 0; right: 0; bottom: 0; z-index: 40; display: flex; align-items: center; justify-content: space-between; gap: 12px; height: var(--bb); padding: 0 max(16px, env(safe-area-inset-right)) env(safe-area-inset-bottom) max(16px, env(safe-area-inset-left)); background: var(--noir); border-top: 1px solid var(--c700); color: var(--k100); transition: transform .3s var(--ease), visibility 0s; }
  .bb.off { transform: translateY(105%); visibility: hidden; transition: transform .3s var(--ease), visibility 0s .3s; }
  .bb-t { margin: 0; font-size: 16px; line-height: 1.25; }
  .bb-t b { color: var(--blanc); }
  .bb-t .tot { display: block; font: 400 22px/1.1 var(--f-t); color: var(--blanc); }
  .bb .btn { flex: none; min-width: 120px; }
  .menu-open .bb { transform: translateY(105%); visibility: hidden; }
}
@media (max-width: 400px) {
  .menu-in { grid-template-rows: minmax(96px, 1fr) auto auto; gap: 16px; }
  .menu-trace { min-height: 96px; }
  .menu-nav a { min-height: 54px; }
  .menu-nav b { font-size: 27px; }
  .menu-nav span { font-size: 15px; }
}