/* ============================================================
   OXYCOUPE JADIDA — Chrome
   En-tête, navigation, menu, saignée de séparation, pied de page.
   Chargé par TOUTES les pages ; sections.css ne sert qu'à l'accueil.
   ============================================================ */

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 800;
  height: var(--header-h);
  display: flex;
  align-items: center;
  color: #fff;
  transition: transform .55s var(--e-out), background-color .4s ease, box-shadow .4s ease;
  will-change: transform;
}
.site-header::before {
  content: "";
  position: absolute; inset: 0;
  background: rgba(8,9,12,.72);
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid rgba(255,255,255,.08);
  opacity: 0;
  transition: opacity .4s ease;
  z-index: -1;
}
.site-header.is-stuck::before { opacity: 1; }
.site-header.is-hidden { transform: translateY(-102%); }

/* Over light sections the header inverts */
.site-header.is-light { color: var(--ink); }
.site-header.is-light::before {
  background: rgba(250,250,248,.82);
  border-bottom-color: rgba(8,9,12,.1);
}


.site-header__in {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
  display: flex;
  align-items: center;
  gap: var(--sp-6);
}

.brand {
  position: relative;
  display: block;
  width: clamp(126px, 11vw, 168px);
  flex: none;
}
.brand img { width: 100%; }

.nav { margin-left: auto; }
.nav__list { display: flex; align-items: center; gap: clamp(1rem, 1.9vw, 2.35rem); }
.nav__link {
  position: relative;
  font-family: var(--f-mono);
  font-size: var(--t-mono);
  letter-spacing: .14em;
  text-transform: uppercase;
  padding: .4em 0;
  opacity: .78;
  transition: opacity .25s;
}
.nav__link::after {
  content: "";
  position: absolute; left: 0; bottom: 0;
  width: 100%; height: 1px;
  background: currentColor;
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .45s var(--e-out);
}
.nav__link:hover { opacity: 1; }
.nav__link:hover::after { transform: scaleX(1); transform-origin: left; }
.nav__link.is-active { opacity: 1; }
.nav__link.is-active::after { transform: scaleX(1); background: var(--blue-400); }

.header__cta { display: none; }
@media (min-width: 1140px) {
  .header__cta {
    display: inline-flex;
    padding: .85em 1.25em;
    font-size: var(--t-mono);
  }
}

/* Burger */
.burger {
  --bw: 22px;
  position: relative;
  width: 44px; height: 44px;
  margin-right: -10px;
  display: grid;
  place-items: center;
  flex: none;
}
.burger span {
  position: absolute;
  width: var(--bw); height: 1.5px;
  background: currentColor;
  transition: transform .45s var(--e-out), opacity .2s;
}
.burger span:nth-child(1) { transform: translateY(-4px); }
.burger span:nth-child(2) { transform: translateY(4px); }
.burger.is-open span:nth-child(1) { transform: rotate(45deg); }
.burger.is-open span:nth-child(2) { transform: rotate(-45deg); }
@media (min-width: 1100px) { .burger { display: none; } }
@media (max-width: 1099px) { .nav { display: none; } }

/* Mobile menu */
.menu {
  position: fixed;
  inset: 0;
  z-index: 790;
  background: var(--ink);
  color: #fff;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--header-h) + 2rem) var(--gutter) var(--gutter);
  clip-path: inset(0 0 100% 0);
  visibility: hidden;
}
.menu.is-open { visibility: visible; }
.menu::before {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px);
  background-size: 68px 68px;
  pointer-events: none;
}
.menu__list { display: grid; gap: .2rem; position: relative; }
.menu__item { overflow: hidden; }
.menu__link {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  font-family: var(--f-display);
  font-size: clamp(2rem, 9vw, 3.5rem);
  font-weight: 700;
  font-variation-settings: "wdth" 104;
  letter-spacing: -.035em;
  text-transform: uppercase;
  line-height: 1.08;
  padding-block: .1em;
}
.menu__link i {
  font-family: var(--f-mono);
  font-size: .7rem;
  font-style: normal;
  letter-spacing: .1em;
  color: var(--blue-400);
  opacity: .7;
}
.menu__foot {
  margin-top: auto;
  padding-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  font-family: var(--f-mono);
  font-size: var(--t-xs);
  letter-spacing: .1em;
  color: var(--steel-400);
  position: relative;
}

/* ============================================================
   SEAM — the recurring cut between sections
   ============================================================ */
.seam {
  position: relative;
  height: 1px;
  background: var(--rule);
  overflow: visible;
  z-index: 5;
}
.seam__spark {
  position: absolute;
  top: 50%;
  left: 0;
  width: 26px; height: 3px;
  transform: translate(-50%, -50%) scaleX(0);
  border-radius: 2px;
  background: linear-gradient(90deg, transparent, var(--molten-hot) 45%, #fff 55%, var(--molten) 75%, transparent);
  box-shadow: 0 0 14px 2px rgba(255,90,31,.75), 0 0 46px 8px rgba(255,90,31,.28);
  opacity: 0;
  pointer-events: none;
}
.seam__trail {
  position: absolute;
  top: 50%; left: 0;
  height: 1px;
  width: 100%;
  transform: translateY(-50%) scaleX(0);
  transform-origin: left;
  background: linear-gradient(90deg, rgba(255,90,31,0), rgba(255,90,31,.85), rgba(255,215,163,.95));
  opacity: 0;
  pointer-events: none;
}

/* ---------- Menu mobile : sous-listes ------------------------ */
.menu__item { position: relative; }
.menu__toggle {
  position: absolute;
  right: 0; top: 0;
  height: 100%;
  width: 3.2rem;
  background: none;
  border: 0;
  color: rgba(255,255,255,.5);
  cursor: pointer;
  display: grid;
  place-items: center;
  transition: color .25s;
}
.menu__toggle svg { width: 13px; height: 13px; transition: transform .4s var(--e-out); }
.menu__item.is-open .menu__toggle { color: #fff; }
.menu__item.is-open .menu__toggle svg { transform: rotate(180deg); }

.menu__sub {
  display: grid;
  gap: .1rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height .5s var(--e-inout), opacity .35s;
  opacity: 0;
  padding-left: clamp(2.6rem, 7vw, 4.2rem);
}
.menu__item.is-open .menu__sub { max-height: 30rem; opacity: 1; padding-block: .5rem .9rem; }
.menu__sub a {
  color: rgba(255,255,255,.62);
  text-decoration: none;
  font-size: var(--t-sm);
  padding: .4rem 0;
  display: block;
  transition: color .25s;
}
.menu__sub a:hover, .menu__sub a[aria-current="page"] { color: var(--blue-400); }


/* ============================================================
   TRANSITIONS DE PAGE — « l'obturateur »
   ------------------------------------------------------------
   Version précédente : deux plaques couleur #08090C sur un site
   dont le fond EST #08090C. Elles étaient invisibles ; il ne
   restait qu'un trait orange. Corrigé ici par un geste mécanique
   — six lames d'acier qui tombent l'une après l'autre, chacune
   précédée de son arête incandescente — visible quel que soit le
   fond parce que c'est le MOUVEMENT qu'on voit, pas la couleur.
   ============================================================ */
.pt {
  position: fixed;
  inset: 0;
  z-index: 9200;
  pointer-events: none;
  visibility: hidden;
}
.pt.is-on { visibility: visible; pointer-events: all; }

.pt__bands {
  position: absolute;
  inset: -2px;
  display: flex;
}

.pt__band {
  position: relative;
  flex: 1 1 0;
  transform: translateY(-101%);
  will-change: transform;
  /* Assez claire pour se détacher du fond du site (#08090C) : sans cet
     écart de valeur, le rideau tombait sans qu'on le voie. */
  background:
    linear-gradient(180deg, #2A313F 0%, #1A2029 40%, #11151D 100%);
  box-shadow: inset 1px 0 0 rgba(255, 255, 255, .07),
              inset -1px 0 0 rgba(0, 0, 0, .6);
}
/* un reflet le long de chaque lame : on compte les pièces qui tombent */
.pt__band:nth-child(even) {
  background:
    linear-gradient(180deg, #232935 0%, #161B23 40%, #0E1219 100%);
}
/* le grain d'acier : sans lui la lame est un aplat mort */
.pt__band::before {
  content: "";
  position: absolute;
  inset: 0;
  background-image: var(--grain-url);
  opacity: .38;
  mix-blend-mode: overlay;
}
/* l'arête incandescente qui ouvre la voie */
/* L'arête incandescente qui ouvre la voie — c'est elle qu'on suit des
   yeux, elle doit être franche. */
.pt__band::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 3px;
  background: linear-gradient(90deg,
    var(--molten) 0%, var(--molten-hot) 40%, #FFF3E2 50%, var(--molten-hot) 60%, var(--molten) 100%);
  box-shadow: 0 0 22px 4px rgba(255, 120, 40, .85),
              0 0 60px 16px rgba(255, 90, 31, .45),
              0 8px 40px 6px rgba(255, 90, 31, .3);
}

/* La marque du passage : le nom de la page qu'on rejoint, révélé
   par une saignée horizontale. */
.pt__mark {
  position: absolute;
  inset: 0;
  display: grid;
  place-content: center;
  gap: .9rem;
  justify-items: center;
  opacity: 0;
  padding-inline: var(--gutter);
}
.pt__seam {
  display: block;
  width: min(420px, 62vw);
  height: 1px;
  transform: scaleX(0);
  background: linear-gradient(90deg, transparent, var(--molten) 20%, var(--molten-hot) 50%, var(--molten) 80%, transparent);
  box-shadow: 0 0 16px 2px rgba(255, 90, 31, .55);
}
.pt__label {
  font-family: var(--f-mono);
  font-size: var(--t-xs);
  letter-spacing: .28em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .82);
  text-align: center;
  max-width: 34ch;
  line-height: 1.6;
}

/* ---- La découpe : la pièce cliquée voyage vers la page suivante --- */
.pt-flip {
  pointer-events: none;
  will-change: top, left, width, height;
  overflow: hidden;
  background: var(--steel-800);
  box-shadow: 0 50px 110px -34px rgba(0, 0, 0, .85);
}
.pt-flip img {
  width: 100%; height: 100%;
  object-fit: cover;
  display: block;
  filter: saturate(.84) contrast(1.06) brightness(.95);
}
/* le contour de coupe qui se trace autour de la pièce détachée */
.pt-flip__cut {
  position: absolute;
  inset: 0;
  box-shadow: inset 0 0 0 1.5px var(--molten),
              0 0 26px 3px rgba(255, 90, 31, .45);
  opacity: 0;
}

/* Pendant une transition, plus rien n'est cliquable : on évite les
   doubles navigations et les états à moitié montés. */
body.is-transitioning { cursor: progress; }
body.is-transitioning #main,
body.is-transitioning .site-footer { pointer-events: none; }

@media (prefers-reduced-motion: reduce) {
  .pt, .pt-flip { display: none !important; }
}

/* ============================================================
   EN-TÊTE — la barre
   Transparente au sommet, elle se contracte en barre de verre
   dès que la page défile. Le pan coupé en bas à droite reprend
   la signature de forme.
   ============================================================ */
.site-header {
  height: auto;
  padding-block: clamp(.9rem, 1.6vw, 1.35rem);
  transition: transform .55s var(--e-out), padding .45s var(--e-out);
}
.site-header::before { display: none; }

.site-header__in {
  position: relative;
  width: min(var(--maxw), 100% - var(--gutter) * 2);
  margin-inline: auto;
  display: flex;
  align-items: center;
  gap: clamp(1rem, 3vw, 3rem);
  padding: .5rem clamp(.75rem, 1.4vw, 1.15rem) .5rem clamp(.9rem, 1.6vw, 1.3rem);
}

/* Le verre est porté par un calque en retrait, PAS par le conteneur :
   un clip-path sur le conteneur découperait aussi le panneau déroulant,
   qui déborde volontairement sous la barre. */
.site-header__in::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  --ch: var(--ch-sm);
  background: rgba(12, 14, 19, .72);
  backdrop-filter: blur(20px) saturate(150%);
  -webkit-backdrop-filter: blur(20px) saturate(150%);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .09),
              0 18px 40px -22px rgba(0, 0, 0, .8);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ch)),
                     calc(100% - var(--ch)) 100%, 0 100%);
  opacity: 0;
  transition: opacity .5s var(--e-out);
}

/* Le verre n'apparaît qu'au défilement : au sommet, la barre flotte
   sur l'image sans cadre. */
.site-header.is-stuck { padding-block: .55rem; }
.site-header.is-stuck .site-header__in::before { opacity: 1; }
.site-header.is-light .site-header__in::before {
  background: rgba(250, 250, 248, .82);
  box-shadow: inset 0 0 0 1px rgba(8, 9, 12, .1),
              0 18px 40px -26px rgba(8, 9, 12, .3);
}

.brand { flex: none; width: clamp(108px, 11vw, 148px); }
.brand img { width: 100%; height: auto; }

.nav { margin-left: auto; }
.nav__list { display: flex; align-items: center; gap: clamp(.35rem, 1.1vw, 1.1rem); }
.nav__item { position: relative; }

.nav__link {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  padding: .7rem .75rem;
  background: none;
  border: 0;
  cursor: pointer;
  font-family: var(--f-mono);
  font-size: var(--t-mono);
  font-weight: 500;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: inherit;
  opacity: .72;
  transition: opacity .3s var(--e-out);
}
.nav__link::after { display: none; }
.nav__link:hover, .nav__drop.is-open > .nav__link { opacity: 1; }

/* Le repère actif : un point de perçage, pas un soulignement */
.nav__link > span { position: relative; }
.nav__link > span::after {
  content: "";
  position: absolute;
  left: 50%; bottom: -.55rem;
  width: 3px; height: 3px;
  border-radius: 50%;
  background: var(--molten);
  transform: translateX(-50%) scale(0);
  transition: transform .4s var(--e-out);
}
.nav__link.is-active > span::after,
.nav__drop.is-open > .nav__link > span::after { transform: translateX(-50%) scale(1); }

.nav__link svg { width: 8px; height: 8px; opacity: .5; transition: transform .4s var(--e-out); }
.nav__drop.is-open > .nav__link svg { transform: rotate(180deg); }

/* ---------- Le méga-panneau ---------------------------------- */
.nav__panel {
  position: absolute;
  top: calc(100% + .85rem);
  left: 50%;
  width: min(760px, calc(100vw - var(--gutter) * 2));
  transform: translate(-50%, -10px);
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity .38s var(--e-out), transform .5s var(--e-out), visibility .38s;
  z-index: 40;
}
/* la zone de survol reste continue entre le bouton et le panneau */
.nav__drop::after {
  content: "";
  position: absolute;
  top: 100%; left: 50%;
  width: 320px; height: 1.1rem;
  transform: translateX(-50%);
  display: none;
}
.nav__drop.is-open::after { display: block; }
.nav__drop.is-open .nav__panel {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translate(-50%, 0);
}

.nav__panel-in {
  --ch: var(--ch-md);
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, .82fr);
  gap: clamp(1.2rem, 2.4vw, 2.2rem);
  padding: clamp(1.1rem, 1.8vw, 1.6rem);
  background: rgba(11, 13, 18, .94);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .1),
              0 40px 90px -30px rgba(0, 0, 0, .9);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ch)),
                     calc(100% - var(--ch)) 100%, 0 100%);
  color: #fff;
}

.nav__kicker {
  display: block;
  font-family: var(--f-mono);
  font-size: var(--t-mono);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--blue-400);
  padding: 0 .7rem .8rem;
}

.nav__links { list-style: none; margin: 0; padding: 0; display: grid; gap: 1px; }
.nav__links a {
  display: flex;
  align-items: baseline;
  gap: .8rem;
  padding: .6rem .7rem;
  color: rgba(255, 255, 255, .74);
  text-decoration: none;
  font-size: var(--t-sm);
  line-height: 1.25;
  position: relative;
  transition: color .25s, background-color .25s, padding-left .35s var(--e-out);
}
.nav__links a i {
  font-family: var(--f-mono);
  font-style: normal;
  font-size: var(--t-mono);
  letter-spacing: .1em;
  color: rgba(255, 255, 255, .28);
  flex: none;
  transition: color .25s;
}
.nav__links a:hover,
.nav__links a:focus-visible {
  color: #fff;
  background: rgba(255, 255, 255, .06);
  padding-left: 1.05rem;
}
.nav__links a:hover i { color: var(--molten); }
.nav__links a[aria-current="page"] { color: #fff; }
.nav__links a[aria-current="page"] i { color: var(--blue-400); }

.nav__all {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  margin-top: 1rem;
  padding: 0 .7rem;
  font-family: var(--f-mono);
  font-size: var(--t-mono);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--blue-400);
  text-decoration: none;
}
.nav__all svg { width: 12px; height: 12px; transition: transform .4s var(--e-out); }
.nav__all:hover svg { transform: translateX(.35em); }

/* L'aperçu : la rubrique montre ce qu'elle contient */
.nav__prev {
  position: relative;
  --ch: var(--ch-sm);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ch)),
                     calc(100% - var(--ch)) 100%, 0 100%);
  background: var(--steel-900);
  min-height: 100%;
}
.nav__fig {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  transition: opacity .5s var(--e-out);
}
.nav__fig.is-on { opacity: 1; }
.nav__fig img {
  width: 100%; height: 100%;
  object-fit: cover;
  filter: saturate(.8) contrast(1.06) brightness(.82);
  transform: scale(1.04);
  transition: transform 1.2s var(--e-out);
}
.nav__fig.is-on img { transform: scale(1); }
.nav__fig figcaption {
  position: absolute;
  left: 0; right: 0; bottom: 0;
  padding: 2.2rem .9rem .8rem;
  font-family: var(--f-mono);
  font-size: var(--t-mono);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, .88);
  background: linear-gradient(transparent, rgba(8, 9, 12, .9));
}

@media (max-width: 1180px) {
  .nav__panel { width: min(460px, calc(100vw - var(--gutter) * 2)); }
  .nav__panel-in { grid-template-columns: 1fr; }
  .nav__prev { display: none; }
}

/* ============================================================
   PIED DE PAGE
   Il ne récapitule pas : il conclut. Coordonnées lisibles d'abord,
   donneurs d'ordres qui défilent, index du site, puis la signature —
   le nom de l'entreprise en très grand, révélé par une saignée.
   ============================================================ */
.site-footer {
  background: var(--ink);
  color: #fff;
  padding-top: clamp(3.5rem, 6vw, 7rem);
  position: relative;
  overflow: hidden;
  isolation: isolate;
}
.site-footer::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(120% 80% at 82% 0%, rgba(48, 103, 219, .16), transparent 62%),
    var(--grain-url);
  opacity: .9;
  pointer-events: none;
}

/* ---------- 1. Contact en clair ------------------------------ */
.foot-top {
  display: grid;
  gap: clamp(2.4rem, 5vw, 4.5rem);
  padding-bottom: clamp(2.6rem, 5vw, 4.5rem);
}
@media (min-width: 1000px) {
  .foot-top { grid-template-columns: minmax(0, 1.05fr) minmax(0, 1fr); align-items: start; }
}

.foot-say__k {
  font-family: var(--f-mono);
  font-size: var(--t-mono);
  letter-spacing: .2em;
  text-transform: uppercase;
  color: var(--blue-400);
  margin-bottom: 1.1rem;
}
.foot-say__mail {
  display: inline-block;
  font-family: var(--f-display);
  font-weight: 500;
  font-variation-settings: "wdth" 92;
  font-size: clamp(1.45rem, .9rem + 2.2vw, 2.9rem);
  line-height: 1.05;
  letter-spacing: -.035em;
  color: #fff;
  text-decoration: none;
  position: relative;
  word-break: break-word;
}
.foot-say__mail::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: .06em;
  height: 2px;
  background: linear-gradient(90deg, var(--molten), var(--molten-hot));
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .6s var(--e-out);
}
.foot-say__mail:hover::after { transform: scaleX(1); transform-origin: left; }

.foot-say__tel {
  margin-top: 1.5rem;
  display: flex;
  flex-wrap: wrap;
  gap: .35rem 1.8rem;
  font-family: var(--f-mono);
  font-size: var(--t-sm);
  letter-spacing: .06em;
}
.foot-say__tel a { color: var(--steel-300); text-decoration: none; transition: color .3s; }
.foot-say__tel a:hover { color: #fff; }

.foot-adr { display: grid; gap: 1.6rem; }
@media (min-width: 620px) { .foot-adr { grid-template-columns: repeat(2, 1fr); } }
.foot-adr__b:last-child { grid-column: 1 / -1; }
.foot-adr__k {
  display: block;
  font-family: var(--f-mono);
  font-size: var(--t-mono);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--steel-500);
  margin-bottom: .55rem;
}
.foot-adr p { font-size: var(--t-sm); line-height: 1.62; color: var(--steel-300); max-width: 34ch; }

/* ---------- 2. Donneurs d'ordres ----------------------------- */
.foot-clients {
  border-top: 1px solid rgba(255, 255, 255, .1);
  border-bottom: 1px solid rgba(255, 255, 255, .1);
  padding-block: clamp(1.2rem, 2.4vw, 1.9rem);
  display: grid;
  gap: 1rem;
  align-items: center;
}
@media (min-width: 860px) { .foot-clients { grid-template-columns: auto minmax(0, 1fr); gap: 2.5rem; } }
.foot-clients__k {
  font-family: var(--f-mono);
  font-size: var(--t-mono);
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--steel-500);
  white-space: nowrap;
}
.foot-clients__win {
  overflow: hidden;
  -webkit-mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
  mask-image: linear-gradient(90deg, transparent, #000 6%, #000 94%, transparent);
}
.foot-clients__track {
  display: flex;
  align-items: center;
  gap: 2.2rem;
  width: max-content;
  will-change: transform;
}
.foot-clients__track span {
  font-family: var(--f-display);
  font-size: clamp(1rem, .9rem + .5vw, 1.35rem);
  font-weight: 500;
  font-variation-settings: "wdth" 88;
  letter-spacing: .02em;
  color: var(--steel-400);
  white-space: nowrap;
  transition: color .4s;
}
.foot-clients__track i { color: var(--molten); font-style: normal; opacity: .7; }
.foot-clients:hover .foot-clients__track span { color: var(--steel-200); }

/* ---------- 3. Index du site --------------------------------- */
.fnav {
  display: grid;
  gap: clamp(1.8rem, 3.4vw, 3rem);
  padding-block: clamp(2.4rem, 4.5vw, 4rem);
}
@media (min-width: 620px)  { .fnav { grid-template-columns: repeat(2, 1fr); } }
@media (min-width: 1000px) { .fnav { grid-template-columns: repeat(4, 1fr); } }

.fnav__t {
  font-family: var(--f-mono);
  font-size: var(--t-mono);
  font-weight: 500;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--steel-500);
  margin-bottom: 1.15rem;
}
.fnav__list { list-style: none; margin: 0; padding: 0; display: grid; gap: .1rem; }
.fnav__list a {
  display: block;
  padding: .34rem 0;
  color: var(--steel-300);
  text-decoration: none;
  font-size: var(--t-sm);
  line-height: 1.4;
  transition: color .3s var(--e-out);
}
/* le trait de coupe se dessine sous le lien au survol */
.fnav__list a span { position: relative; display: inline-block; }
.fnav__list a span::after {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: -2px;
  height: 1px;
  background: var(--molten);
  transform: scaleX(0);
  transform-origin: right;
  transition: transform .45s var(--e-out);
}
.fnav__list a:hover { color: #fff; }
.fnav__list a:hover span::after { transform: scaleX(1); transform-origin: left; }

/* ---------- 4. La signature ---------------------------------- */
.foot-sign {
  position: relative;
  padding-inline: clamp(.6rem, 1.6vw, 1.6rem);
  padding-top: clamp(1rem, 2vw, 2rem);
  overflow: hidden;
}
.foot-sign__word {
  display: block;
  font-family: var(--f-display);
  font-weight: 600;
  /* Calibré par mesure : à ces réglages, « OXYCOUPE » fait exactement
     6,16 fois la taille de police. Pour occuper la largeur utile
     (100vw moins les marges), il faut donc ~15,5vw. */
  font-size: 15.35vw;
  font-variation-settings: "wdth" 112;
  letter-spacing: -.035em;
  line-height: .78;
  text-align: center;
  color: transparent;
  -webkit-text-stroke: 1px rgba(255, 255, 255, .26);
  user-select: none;
  /* révélé par la coupe qui le traverse */
  clip-path: inset(0 0 100% 0);
}
.foot-sign.is-cut .foot-sign__word { clip-path: inset(0 0 0% 0); }

.foot-sign__cut {
  position: absolute;
  left: 0; right: 0;
  top: 52%;
  height: 2px;
  transform-origin: left;
  transform: scaleX(0);
  background: linear-gradient(90deg, transparent, var(--molten) 15%, var(--molten-hot) 50%, var(--molten) 85%, transparent);
  box-shadow: 0 0 24px 4px rgba(255, 90, 31, .5);
  opacity: 0;
  pointer-events: none;
}

.foot-sign__sub {
  display: block;
  text-align: center;
  margin-top: clamp(.4rem, 1vw, .9rem);
  font-family: var(--f-mono);
  font-size: var(--t-mono);
  letter-spacing: .22em;
  text-transform: uppercase;
  color: var(--steel-500);
}

/* Sans animation, la signature reste simplement visible. */
@media (prefers-reduced-motion: reduce) {
  .foot-sign__word { clip-path: none; }
  .foot-sign__cut { display: none; }
}

/* ---------- 5. Barre de bas de page -------------------------- */
.foot-bar {
  border-top: 1px solid rgba(255, 255, 255, .1);
  margin-top: clamp(1.6rem, 3vw, 2.6rem);
  padding-block: clamp(1.2rem, 2.2vw, 1.7rem);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 1rem clamp(1.4rem, 3vw, 2.6rem);
  font-family: var(--f-mono);
  font-size: var(--t-mono);
  letter-spacing: .1em;
  text-transform: uppercase;
  color: var(--steel-500);
}
.foot-bar__legal { display: flex; gap: 1.4rem; }
.foot-bar__legal a, .foot-bar__c { color: var(--steel-500); text-decoration: none; }
.foot-bar__legal a { transition: color .3s; }
.foot-bar__legal a:hover { color: #fff; }

.foot-social { display: flex; gap: .5rem; margin-right: auto; }
.foot-social a {
  --ch: 5px;
  width: 32px; height: 32px;
  display: grid; place-items: center;
  color: var(--steel-400);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .14);
  clip-path: polygon(0 0, 100% 0, 100% calc(100% - var(--ch)),
                     calc(100% - var(--ch)) 100%, 0 100%);
  transition: background-color .3s, color .3s;
}
.foot-social a:hover { background: var(--blue); color: #fff; }
.foot-social svg { width: 14px; height: 14px; }

/* La signature de l'agence : discrète, mais nette. */
.foot-by {
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  color: var(--steel-500);
  text-decoration: none;
  transition: color .3s;
}
.foot-by b { color: var(--steel-300); font-weight: 500; transition: color .3s; }
.foot-by svg { width: 10px; height: 10px; transition: transform .4s var(--e-out); }
.foot-by:hover { color: var(--steel-300); }
.foot-by:hover b { color: var(--blue-400); }
.foot-by:hover svg { transform: translate(.2em, -.2em); }

/* Après une transition, le focus repart en tête de document — c'est ce
   que ferait un vrai chargement, et les lecteurs d'écran en ont besoin.
   Mais ce focus-là est programmatique : il ne doit pas dessiner de
   cadre, sinon la page s'ouvre sur un rectangle bleu. Le focus au
   clavier, lui, reste parfaitement visible partout ailleurs. */
#main:focus,
#main > * > h1:focus,
#main h1[tabindex="-1"]:focus,
[tabindex="-1"]:focus { outline: none; }