/* ─────────────────────────────────────────
   EMS TRAVAUX — style.css v2
   Corrections complètes : nav glissement, hero, intro, galerie colonnes, références, responsive
───────────────────────────────────────── */

/* ═══════════ TOKENS ═══════════ */
:root {
  --c-bg:          #F4F2EF;
  --c-bg-alt:      #EDECEA;
  --c-bg-dark:     #111111;
  --c-text:        #1C1C1C;
  --c-text-soft:   #4A4A4A;
  --c-text-muted:  #8C8C8C;
  --c-gold:        #C9A227;
  --c-white:       #FFFFFF;
  --c-border:      rgba(28,28,28,0.10);
  --c-border-dark: rgba(255,255,255,0.12);

  --font-serif: 'Cormorant Garamond', Georgia, serif;
  --font-sans:  'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --container-max: 1320px;
  --container-pad: clamp(1.25rem, 5vw, 3rem);

  --ease-smooth: cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --t-base:  320ms;
  --t-slow:  600ms;
  --t-xslow: 900ms;

  --nav-h:        64px;
  --nav-float-y:  calc(100vh - var(--nav-h) - 32px); /* mis à jour par JS */
}

/* ═══════════ BASE ═══════════ */
html { font-size: 16px; }

body {
  font-family: var(--font-sans);
  background-color: var(--c-bg);
  color: var(--c-text);
  overflow-x: hidden;
}

::selection { background-color: var(--c-gold); color: var(--c-white); }

:focus-visible { outline: 2px solid var(--c-gold); outline-offset: 3px; }

/* ═══════════ LAYOUT ═══════════ */
.container {
  max-width: var(--container-max);
  margin-inline: auto;
  padding-inline: var(--container-pad);
}

.section { padding-block: clamp(4rem, 9vw, 9rem); }

.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.section--dark { background-color: var(--c-bg-dark); color: var(--c-white); }

/* ═══════════ TYPOGRAPHY ═══════════ */
.section-label {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--c-text-muted);
  margin-bottom: 1.25rem;
}

.section-label::before {
  content: '';
  display: block;
  width: 28px;
  height: 1px;
  background-color: var(--c-gold);
  flex-shrink: 0;
}

.section-label--light { color: rgba(255,255,255,0.5); }
.section-label--light::before { background-color: var(--c-gold); }

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3.5rem);
  font-weight: 300;
  line-height: 1.12;
  letter-spacing: -0.02em;
  color: var(--c-text);
  margin-bottom: var(--gap-md, 2rem);
}

.section-title em { font-style: italic; font-weight: 400; color: var(--c-text-soft); }
.section-title--light { color: var(--c-white); }
.section-title--light em { color: rgba(255,255,255,0.65); }

/* ═══════════ BUTTONS ═══════════ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  padding: 0.875rem 2.5rem;
  border-radius: 0;
  cursor: pointer;
  position: relative;
  overflow: hidden;
  transition:
    background-color var(--t-base) var(--ease-smooth),
    color var(--t-base) var(--ease-smooth),
    border-color var(--t-base) var(--ease-smooth),
    transform 180ms var(--ease-smooth);
}

.btn:active { transform: scale(0.98); }

.btn--primary {
  background-color: var(--c-text);
  color: var(--c-white);
  border: 1px solid var(--c-text);
}

.btn--primary:hover {
  background-color: var(--c-gold);
  border-color: var(--c-gold);
}

.btn--ghost {
  background-color: transparent;
  color: var(--c-white);
  border: 1px solid rgba(255,255,255,0.45);
}

.btn--ghost:hover {
  background-color: rgba(255,255,255,0.1);
  border-color: rgba(255,255,255,0.7);
}

.btn--large { padding: 1.125rem 3rem; font-size: 0.8125rem; }
.btn--full-width { width: 100%; }

.btn-text {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--c-text);
  transition: gap var(--t-base) var(--ease-smooth);
}

.btn-text:hover { gap: 1rem; }
.btn-text__arrow { transition: transform var(--t-base) var(--ease-smooth); }
.btn-text:hover .btn-text__arrow { transform: translateX(4px); }

/* ═══════════ MOBILE HEADER ═══════════ */
.mobile-header {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 900;
  height: 64px;
  padding-inline: var(--container-pad);
  align-items: center;
  justify-content: space-between;
  background-color: var(--c-bg);
  border-bottom: 1px solid var(--c-border);
}

.mobile-header__logo img {
  height: 30px;
  width: auto;
  object-fit: contain;
}

.mobile-menu-btn {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px; height: 44px;
  padding: 8px;
}

.mobile-menu-btn__line {
  display: block;
  width: 22px; height: 2px;
  background-color: var(--c-text);
  transition: transform var(--t-base) var(--ease-smooth), opacity var(--t-base), width var(--t-base);
  transform-origin: center;
}

.mobile-menu-btn.is-open .mobile-menu-btn__line:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.mobile-menu-btn.is-open .mobile-menu-btn__line:nth-child(2) { opacity: 0; width: 0; }
.mobile-menu-btn.is-open .mobile-menu-btn__line:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ═══════════ MOBILE NAV ═══════════ */
.mobile-nav {
  position: fixed; inset: 0; z-index: 950;
  pointer-events: none; visibility: hidden;
}

.mobile-nav.is-open { pointer-events: all; visibility: visible; }

.mobile-nav__backdrop {
  position: absolute; inset: 0;
  background-color: rgba(0,0,0,0);
  transition: background-color var(--t-slow) var(--ease-smooth);
}

.mobile-nav.is-open .mobile-nav__backdrop { background-color: rgba(0,0,0,0.55); }

.mobile-nav__panel {
  position: absolute; top: 0; right: 0; bottom: 0;
  width: min(380px, 90vw);
  background-color: var(--c-bg);
  display: flex; flex-direction: column;
  padding: 5rem var(--container-pad) 3rem;
  transform: translateX(100%);
  transition: transform var(--t-slow) var(--ease-out);
  overflow-y: auto;
}

.mobile-nav.is-open .mobile-nav__panel { transform: translateX(0); }

.mobile-nav__close {
  position: absolute; top: 1.25rem; right: 1.25rem;
  width: 44px; height: 44px;
  display: flex; align-items: center; justify-content: center;
}

.mobile-nav__close span {
  position: absolute;
  display: block; width: 20px; height: 1.5px;
  background-color: var(--c-text);
}

.mobile-nav__close span:first-child { transform: rotate(45deg); }
.mobile-nav__close span:last-child  { transform: rotate(-45deg); }

.mobile-nav__list {
  flex: 1;
  display: flex; flex-direction: column; gap: 0.25rem;
  margin-top: 1rem;
}

.mobile-nav__link {
  display: flex; align-items: baseline; gap: 1rem;
  padding: 0.875rem 0;
  font-family: var(--font-serif);
  font-size: 1.75rem; font-weight: 300;
  color: var(--c-text);
  border-bottom: 1px solid var(--c-border);
  transition: color var(--t-base) var(--ease-smooth);
}

.mobile-nav__link:hover, .mobile-nav__link.active { color: var(--c-gold); }

.mobile-nav__num {
  font-family: var(--font-sans);
  font-size: 0.6875rem; font-weight: 500;
  letter-spacing: 0.1em; color: var(--c-text-muted);
  flex-shrink: 0;
}

.mobile-nav__cta { margin-top: 2.5rem; }

/* ═══════════ HERO NAV — GLISSEMENT BAS → HAUT ═══════════ */
/*
  Architecture deux couches :
  - .hero-nav (outer)       : fixed, width 100%, transparent. Seul translateY bouge.
                              → glissement vertical pur, zéro mouvement horizontal.
  - .hero-nav__inner (inner): porte le visuel (fond, border, border-radius).
                              flottant = pilule centrée  |  sticky = header plein largeur.
*/
.hero-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-h);
  z-index: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;

  transform: translateY(var(--nav-float-y, calc(100vh - 96px)));
  transition: transform 500ms var(--ease-out);
}

/* ─ Wrapper visuel ─ */
.hero-nav__inner {
  display: flex;
  align-items: center;
  height: 100%;
  padding-inline: 1.75rem;
  gap: 0;
  white-space: nowrap;
  position: relative;
  pointer-events: auto;

  /* --nav-pill-w fixé par JS en px → transition px→100% fluide */
  width: var(--nav-pill-w, max-content);

  background: rgba(244, 242, 239, 0.65);
  backdrop-filter: blur(20px) saturate(1.4);
  -webkit-backdrop-filter: blur(20px) saturate(1.4);
  border: 1px solid rgba(255,255,255,0.6);
  border-radius: 4px;
  box-shadow: 0 8px 40px rgba(0,0,0,0.14);

  transition:
    width         500ms var(--ease-out),
    border-radius 400ms var(--ease-out),
    padding       500ms var(--ease-out),
    background    400ms 80ms var(--ease-smooth),
    box-shadow    400ms 80ms var(--ease-smooth),
    border-color  400ms 80ms var(--ease-smooth);
}

/* ─ Logo : replié en flottant, déplié en sticky ─ */
.hero-nav__logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
  max-width: 0;
  overflow: hidden;
  margin-right: 0;
  opacity: 0;
  pointer-events: none;
  transition:
    max-width    var(--t-slow) var(--ease-smooth),
    margin-right var(--t-slow) var(--ease-smooth),
    opacity      var(--t-slow) var(--ease-smooth);
}

.hero-nav__logo img { height: 28px; width: auto; object-fit: contain; flex-shrink: 0; }

.hero-nav.is-sticky .hero-nav__logo {
  max-width: 160px;
  margin-right: 1.75rem;
  opacity: 1;
  pointer-events: auto;
}

/* ─ Liens ─ */
.hero-nav__list {
  display: flex;
  align-items: center;
  gap: 0;
}

.hero-nav__link {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.5rem 0.875rem;
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: rgba(28,28,28,0.65);
  position: relative;
  transition: color var(--t-base) var(--ease-smooth);
}

.hero-nav__link::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 0.875rem;
  right: 0.875rem;
  height: 1px;
  background-color: var(--c-gold);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-base) var(--ease-smooth);
}

.hero-nav__link:hover,
.hero-nav__link.active { color: var(--c-text); }

.hero-nav__link:hover::after,
.hero-nav__link.active::after { transform: scaleX(1); }

.hero-nav__num {
  font-size: 0.5625rem;
  color: var(--c-text-muted);
  font-weight: 400;
  letter-spacing: 0.05em;
}

.hero-nav__cta {
  margin-left: 1.5rem;
  padding: 0.625rem 1.5rem;
  font-size: 0.6875rem;
}

/* ─ État sticky : outer monte en top:0 ─ */
.hero-nav.is-sticky {
  transform: translateY(0);
  animation: none;
}

/* ─ État sticky : inner devient header plein largeur ─ */
.hero-nav.is-sticky .hero-nav__inner {
  width: 100%;
  border-radius: 0;
  padding-inline: var(--container-pad);
  background: rgba(244, 242, 239, 0.92);
  border-left: none;
  border-right: none;
  border-top: none;
  border-bottom: 1px solid var(--c-border);
  box-shadow: 0 4px 24px rgba(0,0,0,0.06);
  justify-content: space-between;
}

/* Liens : centrés absolument dans le header */
.hero-nav.is-sticky .hero-nav__list {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

/* CTA : poussé à droite */
.hero-nav.is-sticky .hero-nav__cta {
  margin-left: auto;
}

/* ─ Animation d'entrée page load : monte depuis sous sa position flottante ─ */
@keyframes nav-entrance {
  from {
    opacity: 0;
    transform: translateY(calc(var(--nav-float-y, calc(100vh - 96px)) + 40px));
  }
  to {
    opacity: 1;
    transform: translateY(var(--nav-float-y, calc(100vh - 96px)));
  }
}

.hero-nav {
  animation: nav-entrance 1s 1.2s cubic-bezier(0.34, 1.42, 0.64, 1) both;
}

.hero-nav.is-sticky { animation: none; }

/* ═══════════ HERO ═══════════ */
.hero {
  position: relative;
  height: 100dvh; min-height: 600px;
  display: flex; align-items: center; justify-content: center;
  overflow: hidden;
}

.hero__bg { position: absolute; inset: 0; z-index: 0; }

.hero__bg-img {
  width: 100%; height: 100%;
  object-fit: cover; object-position: center;
  transform-origin: center;
}

.hero__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(
    160deg,
    rgba(0,0,0,0.70) 0%,
    rgba(0,0,0,0.58) 50%,
    rgba(0,0,0,0.72) 100%
  );
}

.hero__monogram {
  position: absolute; bottom: -0.1em; right: -0.05em;
  font-family: var(--font-serif);
  font-size: clamp(12rem, 22vw, 26rem);
  font-weight: 300;
  color: rgba(255,255,255,0.025);
  line-height: 1; pointer-events: none; user-select: none;
  z-index: 1; letter-spacing: -0.04em;
}

.hero__content {
  position: relative; z-index: 2;
  text-align: center;
  max-width: 860px;
  padding-inline: var(--container-pad);
  padding-bottom: 6rem; /* espace pour le nav du bas */
}

/* Eyebrow */
.hero__eyebrow {
  display: inline-flex; align-items: center; gap: 0.875rem;
  font-family: var(--font-sans);
  font-size: 0.6875rem; font-weight: 500;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: rgba(255,255,255,0.82);
  margin-bottom: 1.75rem;
}

.hero__eyebrow-line { display: none; }
.hero__eyebrow-idf-short { display: none; }

/* H1 */
.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(4.5rem, 10vw, 9.5rem);
  font-weight: 300; line-height: 0.92;
  letter-spacing: -0.025em;
  color: var(--c-white);
  margin-bottom: 1.5rem;
}

.hero__title em {
  font-style: italic; font-weight: 300;
  display: block;
}

/* Baseline */
.hero__baseline {
  font-family: var(--font-serif);
  font-size: clamp(1rem, 2vw, 1.375rem);
  font-weight: 300; font-style: italic;
  color: rgba(255,255,255,0.92);
  margin-bottom: 1rem;
  letter-spacing: 0.02em;
}

/* Texte */
.hero__text {
  font-family: var(--font-sans);
  font-size: clamp(0.875rem, 1.4vw, 0.9375rem);
  font-weight: 300; line-height: 1.75;
  color: rgba(255,255,255,0.72);
  margin-bottom: 2.5rem;
  letter-spacing: 0.025em;
  max-width: 600px; margin-inline: auto;
}

.hero__actions {
  display: flex; align-items: center; justify-content: center;
  gap: 1rem; flex-wrap: wrap;
}

/* Scroll indicator — côté droit, desktop seulement */
.hero__scroll {
  position: absolute;
  right: 2.5rem; bottom: 50%;
  transform: translateY(50%);
  z-index: 2;
  display: flex; flex-direction: column; align-items: center; gap: 0.75rem;
}

.hero__scroll-line {
  display: block; width: 1px; height: 60px;
  background: linear-gradient(to bottom, rgba(255,255,255,0), rgba(255,255,255,0.4));
}

.hero__scroll-label {
  font-family: var(--font-sans);
  font-size: 0.5625rem; font-weight: 500;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  writing-mode: vertical-lr; transform: rotate(180deg);
}

/* ═══════════ INTRO ═══════════ */
.intro {
  background-color: var(--c-bg);
  padding-block: clamp(3rem, 6vw, 6rem);
}

/* Grille 2 colonnes équilibrées */
.intro__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  align-items: center;
  margin-bottom: 3rem;
}

.intro__text-col { /* pas de padding-top forcé */ }

.intro__text {
  font-family: var(--font-sans);
  font-size: 1.0625rem; line-height: 1.8;
  color: var(--c-text-soft);
  margin-bottom: 1.25rem;
}

.intro__image-col {}

.intro__image-wrap {
  overflow: hidden; border-radius: 2px;
  aspect-ratio: 3/4;
}

.intro__image {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform var(--t-xslow) var(--ease-smooth);
  animation: img-fadein 1.2s var(--ease-out) both;
}

@keyframes img-fadein {
  from { opacity: 0; transform: scale(1.04); }
  to   { opacity: 1; transform: scale(1); }
}

.intro__image-wrap:hover .intro__image { transform: scale(1.04); }

/* Stats — bande full-width sous la grille */
.intro__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border: 1px solid var(--c-border);
}

.intro__stat {
  display: flex; flex-direction: column; gap: 0.3rem;
  padding: 2rem 2rem;
  border-right: 1px solid var(--c-border);
  transition: background-color var(--t-base) var(--ease-smooth);
}

.intro__stat:last-child { border-right: none; }
.intro__stat:hover { background-color: var(--c-bg-alt); }

.intro__stat-value {
  font-family: var(--font-serif);
  font-size: 2rem; font-weight: 400;
  color: var(--c-text); line-height: 1;
}

.intro__stat-label {
  font-family: var(--font-sans);
  font-size: 0.6875rem; font-weight: 400;
  letter-spacing: 0.06em; color: var(--c-text-muted);
}

/* ═══════════ EXPERTISES — SCROLL-LOCK ═══════════ */
.expertises { background-color: var(--c-bg-dark); }

/* Conteneur scrollable : 5 étapes × 0.33vh (vitesse ×3) + 1vh = 3vh */
.expertises__scroll-container {
  height: calc(3 * 100vh);
}

/* Le sticky : occupe toute la hauteur viewport */
.expertises__sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow: hidden;
  display: flex;
}

/* Colonne visuelle gauche : image pleine hauteur */
.expertises__visual {
  width: 52%;
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

.expertises__preview {
  position: absolute; inset: 0;
}

.expertises__preview-img {
  position: absolute; inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity 0.8s var(--ease-smooth), transform 1.2s var(--ease-smooth);
  transform: scale(1.04);
}

.expertises__preview-img.active {
  opacity: 1;
  transform: scale(1);
}

/* Compteur bas-gauche */
.expertises__counter {
  position: absolute;
  bottom: 2.5rem; left: 2.5rem;
  display: flex; align-items: baseline; gap: 0.2rem;
  color: rgba(255,255,255,0.5);
  font-family: var(--font-sans);
  font-size: 0.75rem; letter-spacing: 0.1em;
}

.expertises__counter-current {
  font-family: var(--font-serif);
  font-size: 2rem; font-weight: 300;
  color: rgba(255,255,255,0.85);
  line-height: 1;
  transition: opacity 0.3s;
}

.expertises__counter-sep {
  font-size: 0.875rem;
}

/* Colonne panel droite */
.expertises__panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: calc(var(--nav-h) + 3rem) 4rem 3rem 4.5rem;
  background-color: var(--c-bg-alt);
  overflow: hidden;
  position: relative;
}

.expertises__panel-header {
  margin-bottom: 2.5rem;
  flex-shrink: 0;
}

.expertises__title {
  font-family: var(--font-serif);
  font-size: clamp(1.5rem, 2.5vw, 2.25rem);
  font-weight: 300; line-height: 1.15;
  letter-spacing: -0.02em; color: var(--c-text);
  margin-bottom: 0;
}

/* Liste des expertises */
.expertises__list {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: center;
  overflow: hidden;
}

.expertise-item {
  border-top: 1px solid var(--c-border);
}

.expertise-item:last-child { border-bottom: 1px solid var(--c-border); }

.expertise-item__btn {
  display: flex; align-items: center; width: 100%;
  padding: 0.875rem 0; gap: 1rem; text-align: left; cursor: pointer;
  transition: color var(--t-base) var(--ease-smooth);
}

.expertise-item__num {
  font-family: var(--font-sans);
  font-size: 0.625rem; font-weight: 500;
  letter-spacing: 0.12em; color: var(--c-text-muted);
  width: 2rem; flex-shrink: 0;
  transition: color var(--t-base);
}

.expertise-item.active .expertise-item__num { color: var(--c-gold); }

.expertise-item__name {
  flex: 1; font-family: var(--font-serif);
  font-size: 1.25rem; font-weight: 400;
  color: var(--c-text-soft);
  transition: color var(--t-base) var(--ease-smooth);
}

.expertise-item.active .expertise-item__name { color: var(--c-text); font-size: 1.375rem; }
.expertise-item__btn:hover .expertise-item__name { color: var(--c-text); }

.expertise-item__arrow {
  display: none;
}

.expertise-item__desc {
  font-family: var(--font-sans);
  font-size: 0.9rem; line-height: 1.7; color: var(--c-text-soft);
  padding-left: 3rem;
  max-height: 0; overflow: hidden;
  transition: max-height 0.6s var(--ease-out), padding-bottom 0.6s, opacity 0.4s;
  opacity: 0;
}

.expertise-item.active .expertise-item__desc {
  max-height: 120px;
  padding-bottom: 1rem;
  opacity: 1;
}

/* ═══════════ SCROLL HINT ═══════════ */
.scroll-hint {
  position: fixed;
  user-select: none;
  -webkit-user-select: none;
  /* Position basse exprimée en top pour permettre la transition CSS */
  top: calc(100dvh - 5.5rem);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem 0.75rem;
  background: rgba(244, 242, 239, 0.88);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid rgba(28,28,28,0.08);
  border-radius: 2rem;
  box-shadow: 0 2px 16px rgba(0,0,0,0.07);
  pointer-events: none;
  z-index: 850;
  white-space: nowrap;
  opacity: 0;
  transition:
    top     0.45s var(--ease-out),
    opacity 0.5s  var(--ease-smooth);
}

/* Scroll vers le haut : remonte sous le header */
.scroll-hint.is-up {
  top: calc(var(--nav-h, 64px) + 1rem);
}

.scroll-hint.is-visible { opacity: 1; pointer-events: auto; }
.scroll-hint.is-hidden  { opacity: 0; }

.scroll-hint__text {
  font-family: var(--font-sans);
  font-size: 0.5625rem;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--c-text-muted);
}

.scroll-hint__icon {
  width: 9px;
  height: 9px;
  border-right: 1.5px solid var(--c-gold);
  border-bottom: 1.5px solid var(--c-gold);
}

@media (max-width: 768px) {
  .scroll-hint { display: none; }
}

/* ═══════════ RÉALISATIONS ═══════════ */
.realisations { background-color: var(--c-bg); }

.realisations__header {
  text-align: center; max-width: 680px; margin-inline: auto; margin-bottom: 2.5rem;
}

.realisations__intro {
  font-family: var(--font-sans);
  font-size: 1rem; line-height: 1.75; color: var(--c-text-soft);
}

/* Filtres */
.gallery-filters {
  display: flex; align-items: center; justify-content: center;
  flex-wrap: wrap; gap: 0.5rem; margin-bottom: 3rem;
}

.gallery-filter {
  font-family: var(--font-sans);
  font-size: 0.6875rem; font-weight: 500;
  letter-spacing: 0.1em; text-transform: uppercase;
  padding: 0.5rem 1.25rem;
  border: 1px solid var(--c-border);
  color: var(--c-text-muted);
  background: transparent; cursor: pointer;
  transition: color var(--t-base), background-color var(--t-base), border-color var(--t-base);
}

.gallery-filter:hover { color: var(--c-text); border-color: var(--c-text-soft); }
.gallery-filter.active { background-color: var(--c-text); color: var(--c-white); border-color: var(--c-text); }

/* ─── Galerie en colonnes CSS (masonry) ─── */
.gallery {
  columns: 3;
  column-gap: 12px;
}

.gallery-item {
  break-inside: avoid;
  margin-bottom: 12px;
  overflow: hidden;
  border-radius: 2px;
  position: relative;
}

.gallery-item__wrap {
  position: relative; width: 100%;
  overflow: hidden;
}

.gallery-item__img {
  width: 100%; height: auto; display: block;
  transition: transform var(--t-xslow) var(--ease-smooth);
  will-change: transform;
}

.gallery-item:hover .gallery-item__img { transform: scale(1.05); }

.gallery-item__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.72) 0%, rgba(0,0,0,0) 55%);
  opacity: 0;
  transition: opacity var(--t-base) var(--ease-smooth);
  display: flex; align-items: flex-end;
}

.gallery-item:hover .gallery-item__overlay { opacity: 1; }

.gallery-item__info {
  padding: 1.5rem;
  transform: translateY(8px);
  transition: transform var(--t-base) var(--ease-smooth);
}

.gallery-item:hover .gallery-item__info { transform: translateY(0); }

.gallery-item__cat {
  display: block;
  font-family: var(--font-sans); font-size: 0.5625rem;
  font-weight: 500; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--c-gold); margin-bottom: 0.3rem;
}

.gallery-item__title {
  font-family: var(--font-serif); font-size: 1.0625rem;
  font-weight: 400; color: var(--c-white); line-height: 1.2;
}

/* ═══════════ MÉTHODE — SCROLL-LOCK ═══════════ */
.methode { background-color: var(--c-bg-alt); padding-block: clamp(6rem, 12vw, 14rem); }

.methode__scroll-container {
  height: auto;
}

.methode__sticky {
  position: static;
  height: auto;
  overflow: visible;
  display: block;
}

.methode__sticky .container {
  width: 100%;
}

.methode__header {
  text-align: center; max-width: 680px; margin-inline: auto;
  margin-bottom: clamp(2.5rem, 5vw, 5rem);
}

.methode__timeline {
  display: grid; grid-template-columns: repeat(4, 1fr);
  position: relative; gap: 0;
}

/* Ligne dorée reliant les étapes */
.methode__timeline::before {
  content: '';
  position: absolute; top: 24px;
  left: calc(12.5% + 0.5px); right: calc(12.5% + 0.5px);
  height: 1px; background-color: rgba(201,162,39,0.2);
  transform-origin: left;
}

.methode__step {
  padding: 0 2rem 3rem;
  opacity: 0.28;
  transition: opacity 0.5s var(--ease-out);
}

.methode__step.is-active {
  opacity: 1;
}

.methode__step-marker {
  display: flex; justify-content: center; margin-bottom: 2rem;
}

.methode__step-num {
  display: flex; align-items: center; justify-content: center;
  width: 48px; height: 48px;
  border-radius: 50%;
  background-color: var(--c-bg-alt);
  border: 1px solid var(--c-border);
  font-family: var(--font-sans); font-size: 0.6875rem;
  font-weight: 600; letter-spacing: 0.06em; color: var(--c-text-muted);
  position: relative; z-index: 1;
  transition: background-color var(--t-slow), border-color var(--t-slow), color var(--t-slow);
}

.methode__step.is-active .methode__step-num {
  background-color: var(--c-text); border-color: var(--c-text); color: var(--c-white);
}

.methode__step-title {
  font-family: var(--font-serif); font-size: 1.25rem; font-weight: 400;
  color: var(--c-text); margin-bottom: 0.875rem; text-align: center;
}

.methode__step-text {
  font-family: var(--font-sans); font-size: 0.9375rem; line-height: 1.7;
  color: var(--c-text-soft); text-align: center;
}

/* ═══════════ ÉQUIPE ═══════════ */
.equipe { background-color: var(--c-bg-dark); }

.equipe__header {
  text-align: center; max-width: 680px; margin-inline: auto;
  margin-bottom: clamp(3rem, 5vw, 5rem);
}

.equipe__intro {
  font-family: var(--font-sans); font-size: 1rem; line-height: 1.75;
  color: rgba(255,255,255,0.5);
}

.equipe__grid {
  display: grid; grid-template-columns: repeat(5, 1fr);
  gap: 1px; background-color: rgba(255,255,255,0.07);
}

.equipe__card {
  display: flex; flex-direction: column; gap: 0.5rem;
  padding: 2.5rem 1.75rem;
  background-color: var(--c-bg-dark);
  transition: background-color var(--t-base) var(--ease-smooth);
}

.equipe__card:hover { background-color: #191919; }

.equipe__card-role {
  font-family: var(--font-sans); font-size: 0.5625rem;
  font-weight: 500; letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--c-gold);
}

.equipe__card-name {
  font-family: var(--font-serif); font-size: 1.25rem;
  font-weight: 400; color: var(--c-white); line-height: 1.2;
}

.equipe__card-desc {
  font-family: var(--font-sans); font-size: 0.875rem;
  line-height: 1.65; color: rgba(255,255,255,0.42); margin-top: 0.5rem;
}


/* ═══════════ CTA ═══════════ */
.cta-section {
  position: relative; padding-block: clamp(5rem, 10vw, 10rem); overflow: hidden;
}

.cta-section__bg { position: absolute; inset: 0; z-index: 0; }

.cta-section__bg-img {
  width: 100%; height: 100%; object-fit: cover;
}

.cta-section__overlay {
  position: absolute; inset: 0;
  background: linear-gradient(135deg, rgba(0,0,0,0.84) 0%, rgba(0,0,0,0.70) 100%);
}

.cta-section__grain {
  position: absolute; inset: 0; opacity: 0.04;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-size: 200px;
}

.cta-section__content {
  position: relative; z-index: 1; text-align: center;
}

.cta-section__title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 4.5rem);
  font-weight: 300; line-height: 1.1; letter-spacing: -0.02em;
  color: var(--c-white); margin-bottom: 1.5rem;
}

.cta-section__text {
  font-family: var(--font-sans); font-size: 1rem; line-height: 1.75;
  color: rgba(255,255,255,0.58);
  max-width: 540px; margin-inline: auto; margin-bottom: 2.5rem;
}

/* ═══════════ CONTACT ═══════════ */
.contact { background-color: var(--c-bg); }

.contact__grid {
  display: grid; grid-template-columns: 1fr 1.6fr;
  gap: clamp(3rem, 7vw, 7rem); align-items: start;
}

.contact__info { padding-top: 1rem; }

.contact__address {
  font-family: var(--font-sans); font-size: 0.9375rem;
  line-height: 1.8; color: var(--c-text-soft); margin-bottom: 2rem;
}

.contact__address-name {
  font-family: var(--font-serif); font-size: 1.25rem; font-weight: 400;
  color: var(--c-text); margin-bottom: 0.25rem;
}

.contact__zone strong { color: var(--c-text); }

.contact__detail {
  display: flex; gap: 1rem; align-items: baseline;
  padding: 0.75rem 0; border-top: 1px solid var(--c-border);
}

.contact__detail-label {
  font-family: var(--font-sans); font-size: 0.6875rem; font-weight: 500;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--c-text-muted);
  width: 4.5rem; flex-shrink: 0;
}

.contact__detail-value {
  font-family: var(--font-sans); font-size: 0.875rem; color: var(--c-text-soft);
}

/* Form */
.contact-form { display: flex; flex-direction: column; gap: 1.5rem; }

.form-row--double { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; }

.form-field { display: flex; flex-direction: column; gap: 0.5rem; }

.form-label {
  font-family: var(--font-sans); font-size: 0.6875rem; font-weight: 500;
  letter-spacing: 0.1em; text-transform: uppercase; color: var(--c-text-muted);
}

.form-required { color: var(--c-gold); }

.form-input, .form-select, .form-textarea {
  font-family: var(--font-sans); font-size: 0.9375rem; color: var(--c-text);
  background-color: transparent;
  border: none; border-bottom: 1px solid var(--c-border);
  padding: 0.75rem 0; width: 100%; outline: none;
  -webkit-appearance: none; appearance: none; border-radius: 0;
  transition: border-color var(--t-base) var(--ease-smooth);
}

.form-textarea { resize: none; line-height: 1.65; }

.form-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='7' fill='none'%3E%3Cpath stroke='%238C8C8C' stroke-width='1.2' d='M1 1l5 5 5-5'/%3E%3C/svg%3E");
  background-repeat: no-repeat; background-position: right 0.5rem center;
  cursor: pointer;
}

.form-input:focus, .form-select:focus, .form-textarea:focus { border-color: var(--c-text); }
.form-input.is-error, .form-textarea.is-error { border-color: #c0392b; }

.form-error { font-family: var(--font-sans); font-size: 0.75rem; color: #c0392b; min-height: 1rem; }

.form-success {
  padding: 1.25rem 1.5rem;
  background-color: rgba(201,162,39,0.08);
  border-left: 3px solid var(--c-gold);
  font-family: var(--font-sans); font-size: 0.9375rem;
  color: var(--c-text); line-height: 1.6;
}

.form-success[aria-hidden="true"] { display: none; }

.btn-loader {
  display: none; width: 14px; height: 14px;
  border: 1.5px solid rgba(255,255,255,0.3);
  border-top-color: rgba(255,255,255,0.8);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.btn.is-loading .btn-label { opacity: 0.5; }
.btn.is-loading .btn-loader { display: block; }

@keyframes spin { to { transform: rotate(360deg); } }

/* ═══════════ FOOTER ═══════════ */
.footer { background-color: var(--c-bg-alt); border-top: 1px solid var(--c-border); }

.footer__grid {
  display: grid; grid-template-columns: 2fr 1fr 1fr;
  gap: clamp(2rem, 5vw, 5rem);
  padding-block: clamp(3rem, 6vw, 6rem);
}

.footer__logo { height: 40px; width: auto; object-fit: contain; margin-bottom: 1rem; }

.footer__tagline {
  font-family: var(--font-sans); font-size: 0.6875rem;
  font-weight: 500; letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--c-text-muted); margin-bottom: 1rem;
}

.footer__address { font-family: var(--font-sans); font-size: 0.875rem; line-height: 1.7; color: var(--c-text-soft); }

.footer__nav-title {
  display: block; font-family: var(--font-sans); font-size: 0.6875rem;
  font-weight: 500; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--c-text-muted); margin-bottom: 1.25rem;
}

.footer__nav ul, .footer__legal-col ul {
  display: flex; flex-direction: column; gap: 0.625rem;
}

.footer__nav a, .footer__legal-col a {
  font-family: var(--font-sans); font-size: 0.875rem; color: var(--c-text-soft);
  transition: color var(--t-base) var(--ease-smooth);
}

.footer__nav a:hover, .footer__legal-col a:hover { color: var(--c-text); }

.footer__rcs {
  font-family: var(--font-sans); font-size: 0.6875rem;
  line-height: 1.7; color: var(--c-text-muted); margin-top: 1.5rem;
}

.footer__bottom { border-top: 1px solid var(--c-border); padding-block: 1.5rem; }

.footer__bottom-inner {
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
}

.footer__copy, .footer__made {
  font-family: var(--font-sans); font-size: 0.75rem;
  color: var(--c-text-muted); letter-spacing: 0.04em;
}

/* ═══════════════════════════════════════════
   RESPONSIVE IRRÉPROCHABLE
═══════════════════════════════════════════ */

/* ── Tablette large (≤ 1100px) ── */
@media (max-width: 1100px) {
  .equipe__grid { grid-template-columns: repeat(3, 1fr); }

  /* Expertises : réduire la taille du panel */
  .expertises__panel { padding-inline: 2.5rem; }
  .expertises__title { font-size: 1.5rem; }
}

/* ── Tablette (≤ 1024px) ── */
@media (max-width: 1024px) {
  .hero-nav { display: none; }
  .mobile-header { display: flex; }
  body { padding-top: 64px; }

  .intro__grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .intro__image-wrap { aspect-ratio: 16/9; }
  .intro__stats { grid-template-columns: repeat(2, 1fr); }
  .intro__stat { border-bottom: 1px solid var(--c-border); }
  .intro__stat:nth-child(3), .intro__stat:nth-child(4) { border-bottom: none; }

  .gallery { columns: 2; }

  .contact__grid { grid-template-columns: 1fr; gap: 1rem; }
  .contact__info { padding-top: 0; }
  #contact-title br { display: none; }
  .contact__address { display: none; }
  .contact__detail { display: none; }
  .footer__grid { grid-template-columns: 1fr 1fr; }
  .footer__brand { grid-column: 1 / -1; }

  /* Hero scroll — masqué tablette */
  .hero__scroll { display: none; }
}

/* ── Mobile (≤ 768px) : désactiver scroll-lock, layout normal ── */
@media (max-width: 768px) {
  /* Expertises : scroll-lock mobile */
  .expertises__scroll-container { height: calc(3 * 100vh); }
  .expertises__sticky {
    position: sticky;
    top: 64px;
    height: calc(100dvh - 64px);
    overflow: hidden;
    overflow: clip; /* empêche le vol du geste tactile iOS (pas de contexte scroll fantôme) */
    touch-action: pan-y; /* fallback : autorise le scroll vertical sur anciens iOS */
    flex-direction: column;
  }
  .expertises__visual { width: 100%; height: 40dvh; max-height: none; flex-shrink: 0; }
  .expertises__counter { display: flex; bottom: 0.75rem; left: 0.875rem; font-size: 0.625rem; }
  .expertises__counter-current { font-size: 1.375rem; }
  /* Panel-header masqué sur mobile */
  .expertises__panel-header { display: none; }
  .expertises__title { font-size: 1.05rem; line-height: 1.25; }
  .expertises__panel {
    width: 100%;
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    -webkit-overflow-scrolling: touch;
    padding: 0.25rem var(--container-pad) 1rem;
  }
  .expertises__list { justify-content: flex-start; }
  .expertise-item__btn { padding: 0.5rem 0; }
  .expertise-item__name { font-size: 1rem; }
  .expertise-item.active .expertise-item__name { font-size: 1.1rem; }
  .scroll-hint { display: flex; }

  /* Méthode : reveal progressif au scroll */
  .methode { padding-top: 4rem; }
  .methode__scroll-container { height: auto; }
  .methode__step {
    opacity: 0.28;
    transform: none;
    transition: opacity 0.6s var(--ease-out);
  }
  .methode__step.is-active { opacity: 1; }
  .methode__timeline { grid-template-columns: 1fr 1fr; }
  .methode__timeline::before { display: none; }

  .intro__stats { grid-template-columns: repeat(2, 1fr); }
  .intro__image-col { display: none; }
  .section-label::before { display: none; }
  .intro__image-wrap { aspect-ratio: 4/5; }

  .gallery { columns: 2; column-gap: 8px; }
  .gallery-item { margin-bottom: 8px; }

  .gallery-filters { flex-wrap: nowrap; overflow-x: auto; justify-content: flex-start; padding-bottom: 0.5rem; scrollbar-width: none; -ms-overflow-style: none; }
  .gallery-filters::-webkit-scrollbar { display: none; }
  .gallery-filter { flex-shrink: 0; }

  .equipe__grid { grid-template-columns: repeat(2, 1fr); }

  .form-row--double { grid-template-columns: 1fr; }

  .footer__grid { grid-template-columns: 1fr; }
  .footer__bottom-inner { flex-direction: column; align-items: flex-start; }

  .hero__text { font-size: 0.875rem; }
  .hero__eyebrow { display: none; }

  /* Gallery : overlay toujours visible sur mobile (pas de hover tactile) */
  .gallery-item__overlay { opacity: 1; }
  .gallery-item__info { transform: translateY(0); }

  /* Hero : supprime le padding-bottom prévu pour la nav flottante (absente sur mobile) */
  .hero__content { padding-bottom: 2rem; }

  /* Fix iOS/Android : font-size ≥ 16px pour éviter le zoom auto au focus */
  .form-input, .form-select, .form-textarea { font-size: 16px; }

  /* Fix : mobile nav — empêche le scroll du fond derrière le panneau */
  .mobile-nav__panel { overscroll-behavior: contain; }

}

/* ── Mobile petit (≤ 480px) ── */
@media (max-width: 480px) {
  .gallery { columns: 1; }

  .hero__title { font-size: clamp(3.5rem, 14vw, 5rem); }
  .hero__baseline { font-size: 1rem; }
  .hero__actions { flex-direction: column; align-items: stretch; }
  .hero__actions .btn { text-align: center; }

  .intro__stats { grid-template-columns: repeat(2, 1fr); }
  .intro__stat { padding: 1.25rem 1rem; }
  .intro__stat-value { font-size: 1.5rem; }
  .intro__image-wrap { aspect-ratio: 4/3; }

  .equipe__grid { grid-template-columns: 1fr; }

  .methode__timeline { grid-template-columns: 1fr; }
  .methode__step { padding-inline: 0; }

  .cta-section__title { font-size: clamp(2rem, 8vw, 3rem); }

  .expertises__title { font-size: 1.25rem; }
}