/* ============================================
   IAF_Header
   ============================================ */

/* Variables */
:root {
  /* Satzspiegel — aligné sur modular / anchor-points / slides (6 col, 1440, 64px, gap 32). */
  --iaf-layout-max-width: 1440px;
  --iaf-layout-padding-inline: 64px;
  --iaf-layout-grid-gap: 32px;
  --iaf-layout-logo-inset: 32px;
  --iaf-layout-inner-max: calc(
    var(--iaf-layout-max-width) - (var(--iaf-layout-padding-inline) * 2)
  );
  --iaf-header-grid-width-standard: var(--iaf-layout-inner-max);
  --iaf-header-grid-width-hero: var(--iaf-layout-max-width);
  --iaf-header-grid-width-transition: 400ms cubic-bezier(0.25, 0.8, 0.25, 1);

  --iaf-header-padding-top: 20px;
  --iaf-header-padding-x: var(--iaf-layout-padding-inline);
  --iaf-header-padding-bottom: 24px;
  /* Hauteur totale de la zone de flou (fixée depuis le haut de la viewport), comme sur marlenmueller.studio */
  --iaf-header-blur-height: 100px;
  /* Voile frost bleu derrière la nav (en plus du blur). */
  --iaf-header-blur-frost-top: rgba(238, 246, 255, 0.42);
  --iaf-header-blur-frost-mid: rgba(238, 246, 255, 0.22);
  --iaf-header-blur-frost-low: rgba(200, 228, 255, 0.1);
  /* Panneau nav : 40px au-dessus des liens ; peu de marge sous le dernier lien (hit zone). */
  --iaf-header-panel-padding-top: 40px;
  --iaf-header-panel-padding-bottom: 12px;
  --iaf-mega-menu-backdrop-blur: 18px;
  --iaf-mega-menu-backdrop-tint: rgba(245, 242, 235, 0.55);
  --iaf-mega-overlay-duration: 420ms;
  --iaf-mega-panel-shift-y: 14px;
  --iaf-mega-content-shift-y: 8px;
  --iaf-mega-panel-duration: 520ms;
  --iaf-mega-content-duration: 480ms;
  --iaf-mega-content-delay: 120ms;
  --iaf-nav-link-hover-duration: 250ms;
  --iaf-nav-link-hover-easing: ease;
}

/* Header */
.iaf-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  display: flex;
  flex-direction: column;
  align-items: stretch;
  padding-top: env(safe-area-inset-top, 0px);
  transition: transform 400ms cubic-bezier(0.25, 0.8, 0.25, 1);
}

/* Mega menu: no solid header/panel fill — links float on viewport blur (see body::before). */
.iaf-header::before {
  display: none;
}

.iaf-header.is-hidden {
  transform: translateY(-100%);
}

/* Full-viewport cream blur while mega-menu is open (Nansen & Piccard style). */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 90;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  background-color: var(--iaf-mega-menu-backdrop-tint);
  backdrop-filter: blur(0);
  -webkit-backdrop-filter: blur(0);
  transition:
    opacity var(--iaf-mega-overlay-duration) var(--iaf-interaction-hover-easing),
    backdrop-filter var(--iaf-mega-overlay-duration) var(--iaf-interaction-hover-easing),
    -webkit-backdrop-filter var(--iaf-mega-overlay-duration) var(--iaf-interaction-hover-easing),
    visibility 0ms linear var(--iaf-mega-overlay-duration);
}

body.iaf-mega-menu-open::before {
  opacity: 1;
  visibility: visible;
  backdrop-filter: blur(var(--iaf-mega-menu-backdrop-blur));
  -webkit-backdrop-filter: blur(var(--iaf-mega-menu-backdrop-blur));
  transition:
    opacity var(--iaf-mega-overlay-duration) var(--iaf-interaction-hover-easing),
    backdrop-filter var(--iaf-mega-overlay-duration) var(--iaf-interaction-hover-easing),
    -webkit-backdrop-filter var(--iaf-mega-overlay-duration) var(--iaf-interaction-hover-easing),
    visibility 0ms;
}

body.iaf-mega-menu-open .iaf-header {
  background: transparent;
}

.iaf-header__top {
  position: relative;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--iaf-header-padding-top) var(--iaf-header-padding-x) var(--iaf-header-padding-bottom);
  transition: padding-inline var(--iaf-header-grid-width-transition);
  /* Laisse passer elementsFromPoint vers le contenu sous la barre (nav tone). */
  pointer-events: none;
}

.iaf-header__top a,
.iaf-header__top button {
  pointer-events: auto;
}

/* Grille Satzspiegel — même inner que le contenu (cols 1–2 logo, 3–6 nav). */
.iaf-header__inner {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--iaf-header-grid-width-standard);
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  column-gap: var(--iaf-layout-grid-gap);
  align-items: center;
  transition: max-width var(--iaf-header-grid-width-transition);
}

/* Logo — exception grille : bord gauche à 32px du viewport */
.iaf-header__logo {
  grid-column: 1 / span 2;
  justify-self: start;
  display: block;
  flex-shrink: 0;
  margin-left: calc(var(--iaf-layout-logo-inset) - var(--iaf-layout-padding-inline));
  opacity: 1;
  transition:
    opacity 260ms ease-out,
    margin-left var(--iaf-header-grid-width-transition);
}

.iaf-header__logo:hover,
.iaf-header__logo:focus-visible {
  opacity: 0.80;
}

.iaf-header__logo svg {
  display: block;
  height: 32px;
  width: auto;
}

/* Nav — colonne contenu (col 3–6), Services ↔ bord gauche hero / modular */
.iaf-header__nav {
  grid-column: 3 / span 4;
  display: flex;
  flex-direction: row;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  min-width: 0;
}

.iaf-header__item {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  text-underline-offset: 4px;
  text-decoration-thickness: 1px;
  color: var(--iaf-primary-1, #2398ff);
  white-space: nowrap;
  transition: color var(--iaf-nav-link-hover-duration) var(--iaf-nav-link-hover-easing);
}

.iaf-header__item.is-current,
.iaf-header__item[aria-current='page'] {
  color: var(--iaf-canvas-heading, #114e6d);
  text-decoration: underline;
}

.iaf-header__nav a.iaf-header__item:not(.is-current):not([aria-current='page']):hover,
.iaf-header__nav a.iaf-header__item:not(.is-current):not([aria-current='page']):focus-visible,
.iaf-header__nav .iaf-header__panel-trigger:not(.is-active) > .iaf-header__item:hover,
.iaf-header__nav .iaf-header__panel-trigger:not(.is-active) > .iaf-header__item:focus-visible {
  color: var(--iaf-primary-2, #114e6d);
}

.iaf-header__chevron {
  position: relative;
  top: 2px;
  width: 10px;
  height: 10px;
  flex-shrink: 0;
  transition: transform var(--iaf-interaction-hover-duration) var(--iaf-interaction-hover-easing);
}

.iaf-header__panel-trigger.is-active .iaf-header__chevron {
  transform: rotate(180deg);
}

.iaf-header__panel-trigger.is-active > .iaf-header__item,
.iaf-header__panel-trigger.is-active > .iaf-header__item:hover {
  color: var(--iaf-primary-1, #2398ff);
}

/* Nav adaptative — ton par lien (page-bg-color.js, data-iaf-nav-tone). Logo exclu. */
html[data-iaf-theme] .iaf-header__item[data-iaf-nav-tone='on-dark'] {
  color: var(--iaf-text-on-dark, #eeeeee);
}

html[data-iaf-theme] .iaf-header__item[data-iaf-nav-tone='on-dark'].is-current,
html[data-iaf-theme] .iaf-header__item[data-iaf-nav-tone='on-dark'][aria-current='page'] {
  color: #ffffff;
  text-decoration: underline;
}

html[data-iaf-theme] .iaf-header__nav a.iaf-header__item[data-iaf-nav-tone='on-dark']:not(.is-current):not([aria-current='page']):hover,
html[data-iaf-theme] .iaf-header__nav a.iaf-header__item[data-iaf-nav-tone='on-dark']:not(.is-current):not([aria-current='page']):focus-visible,
html[data-iaf-theme] .iaf-header__nav .iaf-header__panel-trigger:not(.is-active) > .iaf-header__item[data-iaf-nav-tone='on-dark']:hover,
html[data-iaf-theme] .iaf-header__nav .iaf-header__panel-trigger:not(.is-active) > .iaf-header__item[data-iaf-nav-tone='on-dark']:focus-visible {
  color: var(--iaf-primary-1, #2398ff);
}

html[data-iaf-theme] .iaf-header__panel-trigger.is-active > .iaf-header__item[data-iaf-nav-tone='on-dark'],
html[data-iaf-theme] .iaf-header__panel-trigger.is-active > .iaf-header__item[data-iaf-nav-tone='on-dark']:hover {
  color: #ffffff;
}

html[data-iaf-theme] .iaf-header__menu-toggle[data-iaf-nav-tone='on-dark'] {
  color: var(--iaf-text-on-dark, #eeeeee);
}

html[data-iaf-theme] .iaf-header__item[data-iaf-nav-tone='on-light'] {
  color: var(--iaf-primary-1, #2398ff);
}

html[data-iaf-theme] .iaf-header__item[data-iaf-nav-tone='on-light'].is-current,
html[data-iaf-theme] .iaf-header__item[data-iaf-nav-tone='on-light'][aria-current='page'] {
  color: var(--iaf-canvas-heading, #114e6d);
  text-decoration: underline;
}

html[data-iaf-theme] .iaf-header__nav a.iaf-header__item[data-iaf-nav-tone='on-light']:not(.is-current):not([aria-current='page']):hover,
html[data-iaf-theme] .iaf-header__nav a.iaf-header__item[data-iaf-nav-tone='on-light']:not(.is-current):not([aria-current='page']):focus-visible,
html[data-iaf-theme] .iaf-header__nav .iaf-header__panel-trigger:not(.is-active) > .iaf-header__item[data-iaf-nav-tone='on-light']:hover,
html[data-iaf-theme] .iaf-header__nav .iaf-header__panel-trigger:not(.is-active) > .iaf-header__item[data-iaf-nav-tone='on-light']:focus-visible {
  color: var(--iaf-primary-2, #114e6d);
}

html[data-iaf-theme] .iaf-header__panel-trigger.is-active > .iaf-header__item[data-iaf-nav-tone='on-light'],
html[data-iaf-theme] .iaf-header__panel-trigger.is-active > .iaf-header__item[data-iaf-nav-tone='on-light']:hover {
  color: var(--iaf-primary-1, #2398ff);
}

html[data-iaf-theme] .iaf-header__menu-toggle[data-iaf-nav-tone='on-light'] {
  color: var(--iaf-primary-1, #2398ff);
}

/* --- Hover panels (desktop) — hauteur = contenu (grille 0fr → 1fr sur un seul enfant) --- */
.iaf-header__panels {
  position: relative;
  z-index: 2;
  display: grid;
  grid-template-rows: 0fr;
  align-items: start;
  overflow: hidden;
}

/* `grid-template-rows` est layout-bound (relayout par frame, très coûteux sur
   WebKit/Safari). On n'arme la transition qu'après que le curseur entre dans le
   header (ou focus clavier), via `.is-nav-anim` posée en JS. Évite la transition
   parasite déclenchée à l'arrivée de page (révélation View Transition + reflow
   webfont) qui faisait chuter les FPS sur Safari. Le hover reste animé. */
.iaf-header.is-nav-anim .iaf-header__panels {
  transition: grid-template-rows var(--iaf-interaction-hover-duration) var(--iaf-interaction-hover-easing);
}

.iaf-header.is-panel-open .iaf-header__panels {
  grid-template-rows: 1fr;
  height: fit-content;
}

/* Enveloppe unique pour l’animation : évite que 1fr étire chaque panneau en lignes implicites. */
.iaf-header__panels-track {
  min-height: 0;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1fr;
  align-items: start;
  height: fit-content;
  pointer-events: none;
}

.iaf-header__panels-track > .iaf-header__panel {
  grid-column: 1;
  grid-row: 1;
  align-self: start;
  width: 100%;
}

.iaf-header.is-panel-open .iaf-header__blur {
  opacity: 0;
  visibility: hidden;
}

.iaf-header__panel {
  position: relative;
  margin: 0;
  padding: 0;
  height: auto;
  background-color: transparent;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(calc(-1 * var(--iaf-mega-panel-shift-y)));
  transition:
    opacity var(--iaf-mega-panel-duration) var(--iaf-interaction-hover-easing),
    transform var(--iaf-mega-panel-duration) var(--iaf-interaction-hover-easing),
    visibility 0ms linear var(--iaf-mega-panel-duration);
}

.iaf-header__panel.is-active {
  opacity: 1;
  visibility: visible;
  pointer-events: none;
  transform: translateY(0);
  transition:
    opacity var(--iaf-mega-panel-duration) var(--iaf-interaction-hover-easing),
    transform var(--iaf-mega-panel-duration) var(--iaf-interaction-hover-easing),
    visibility 0ms;
}

.iaf-header__panel[hidden] {
  display: none !important;
}

.iaf-header__panel-inner {
  box-sizing: border-box;
  pointer-events: auto;
  padding-top: var(--iaf-header-panel-padding-top);
  padding-bottom: var(--iaf-header-panel-padding-bottom);
  padding-right: var(--iaf-header-padding-x);
  padding-left: var(--iaf-panel-align, var(--iaf-header-padding-x));
  background: transparent;
  display: flex;
  flex-direction: row;
  justify-content: flex-start;
  align-items: flex-start;
  opacity: 0;
  transform: translateY(calc(-1 * var(--iaf-mega-content-shift-y)));
  transition:
    opacity var(--iaf-mega-content-duration) var(--iaf-interaction-hover-easing),
    transform var(--iaf-mega-content-duration) var(--iaf-interaction-hover-easing);
}

.iaf-header__panel.is-active .iaf-header__panel-inner {
  opacity: 1;
  transform: translateY(0);
  transition-delay: var(--iaf-mega-content-delay);
}

.iaf-header__panel:not(.is-active) .iaf-header__panel-inner {
  transition-delay: 0ms;
}

.iaf-header__panel-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-start;
}

.iaf-header__panel-list--services {
  min-width: 280px;
}

.iaf-header__panel-link {
  display: inline-block;
  text-decoration: none;
  color: var(--iaf-primary-1, #2398ff);
  transform: translateX(0);
  transition:
    color var(--iaf-interaction-hover-duration) var(--iaf-interaction-hover-easing),
    transform var(--iaf-interaction-hover-duration) var(--iaf-interaction-hover-easing);
}

.iaf-header__panel-link:hover,
.iaf-header__panel-link:focus-visible {
  color: var(--iaf-primary-2, #114e6d);
  transform: translateX(8px);
}

.iaf-header__panel-contact {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  color: var(--iaf-canvas-text);
  /* Contact typography: line-height plus proche de Figma. */
  --gt-copy-lh: 24px;
}

.iaf-header__panel-contact-block--address {
  margin-top: calc(3 * var(--gt-copy-lh, 26px));
}

.iaf-header__panel-contact-line {
  margin: 0;
}

.iaf-header__panel-contact-line + .iaf-header__panel-contact-line {
  margin-top: 0;
}

.iaf-header__panel-contact-line--last {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0 6px;
}

.iaf-header__panel-contact-plain {
  color: inherit;
  text-decoration: none;
  transition: color var(--iaf-interaction-hover-duration) var(--iaf-interaction-hover-easing);
}

.iaf-header__panel-contact-plain:hover,
.iaf-header__panel-contact-plain:focus-visible {
  color: inherit;
  text-decoration: underline;
}

.iaf-header__panel-accent-link {
  display: inline-block;
  color: var(--iaf-primary-1, #2398ff);
  text-decoration: none;
  transform: translateX(0);
  transition:
    color var(--iaf-interaction-hover-duration) var(--iaf-interaction-hover-easing),
    transform var(--iaf-interaction-hover-duration) var(--iaf-interaction-hover-easing);
}

.iaf-header__panel-accent-link:hover,
.iaf-header__panel-accent-link:focus-visible {
  color: var(--iaf-primary-2, #114e6d);
  transform: translateX(8px);
}

.iaf-header__panel-maps {
  flex-shrink: 0;
}

@media (max-width: 1023px) {
  body::before {
    display: none;
  }

  .iaf-header {
    transition: transform 560ms cubic-bezier(0.22, 1, 0.36, 1);
  }

  .iaf-header__panels {
    display: none !important;
  }

  :root {
    --iaf-layout-padding-inline: var(--iaf-layout-padding-inline-tablet, 24px);
    --iaf-header-padding-top: 16px;
    --iaf-header-padding-bottom: 16px;
    --iaf-header-blur-height: 72px;
  }

  .iaf-header__inner {
    grid-template-columns: 1fr auto;
    column-gap: 12px;
    align-items: center;
  }

  .iaf-header__logo {
    grid-column: 1;
    margin-left: 0;
  }

  .iaf-header__logo svg {
    height: 28px;
  }

  /* Desktop inline nav hidden — hamburger + drawer instead. */
  .iaf-header__nav {
    display: none !important;
  }

  .iaf-header__menu-toggle {
    grid-column: 2;
    justify-self: end;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    margin: 0;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: pointer;
    color: var(--iaf-primary-1, #2398ff);
    -webkit-tap-highlight-color: transparent;
  }

  .iaf-header__menu-toggle .iaf-header__item {
    display: none;
  }

  .iaf-header__menu-toggle:focus-visible {
    outline: 2px solid var(--iaf-primary-1, #2398ff);
    outline-offset: 2px;
  }

  .iaf-header__menu-icon {
    position: relative;
    display: block;
    width: 22px;
    height: 2px;
    background-color: currentColor;
    border-radius: 1px;
    transition: background-color 200ms ease;
  }

  .iaf-header__menu-icon::before,
  .iaf-header__menu-icon::after {
    content: '';
    position: absolute;
    left: 0;
    width: 22px;
    height: 2px;
    background-color: currentColor;
    border-radius: 1px;
    transition:
      transform 280ms cubic-bezier(0.22, 1, 0.36, 1),
      top 280ms cubic-bezier(0.22, 1, 0.36, 1);
  }

  .iaf-header__menu-icon::before {
    top: -7px;
  }

  .iaf-header__menu-icon::after {
    top: 7px;
  }

  .iaf-header.is-mobile-nav-open .iaf-header__menu-icon {
    background-color: transparent;
  }

  .iaf-header.is-mobile-nav-open .iaf-header__menu-icon::before {
    top: 0;
    transform: rotate(45deg);
  }

  .iaf-header.is-mobile-nav-open .iaf-header__menu-icon::after {
    top: 0;
    transform: rotate(-45deg);
  }

  /* Mobile nav drawer — plein écran teal ; logo header reste visible au-dessus (z-index). */
  .iaf-header__mobile-nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 2;
    box-sizing: border-box;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    padding:
      calc(var(--iaf-header-padding-top) + env(safe-area-inset-top, 0px) + 44px)
      var(--iaf-layout-padding-inline)
      calc(48px + env(safe-area-inset-bottom, 0px));
    overflow: hidden;
    overscroll-behavior: none;
    touch-action: none;
    background-color: var(--iaf-footer-bg, #0c364b);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition:
      opacity 400ms ease-out,
      visibility 0ms linear 400ms;
  }

  .iaf-header.is-mobile-nav-open .iaf-header__mobile-nav {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transition:
      opacity 400ms ease-out,
      visibility 0ms;
  }

  /* Logo drawer masqué : on réutilise le logo header (même position exacte). */
  .iaf-header__mobile-logo {
    display: none;
  }

  .iaf-header__mobile-spacer {
    flex: 1 1 auto;
    min-height: 48px;
  }

  .iaf-header__mobile-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 22px;
    width: 100%;
  }

  .iaf-header__mobile-item {
    border: none;
  }

  .iaf-header__mobile-link {
    display: inline-flex;
    align-items: center;
    padding: 0;
    text-decoration: none;
    color: var(--iaf-text-on-dark, #eeeeee);
    font-size: 22px;
    line-height: 28px;
    letter-spacing: 0;
    word-break: normal;
    overflow-wrap: break-word;
  }

  .iaf-header__mobile-item--group {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 14px;
  }

  .iaf-header__mobile-sublist {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 12px;
  }

  .iaf-header__mobile-sublink {
    display: inline-flex;
    align-items: center;
    padding: 0;
    text-decoration: none;
    color: rgba(238, 238, 238, 0.75);
    font-size: 17px;
    line-height: 24px;
  }

  .iaf-header__mobile-sublink:hover,
  .iaf-header__mobile-sublink:focus-visible {
    color: var(--iaf-text-on-dark, #eeeeee);
  }

  /* Drawer ouvert / en fade-out : logo header recoloré, croix blanche, blur off. */
  .iaf-header.is-mobile-nav-open .iaf-header__logo,
  .iaf-header.is-mobile-nav-closing .iaf-header__logo {
    opacity: 1;
    pointer-events: auto;
  }

  .iaf-header.is-mobile-nav-open .iaf-header__logo svg .cls-1,
  .iaf-header.is-mobile-nav-closing .iaf-header__logo svg .cls-1 {
    fill: var(--iaf-text-on-dark, #eeeeee);
  }

  .iaf-header.is-mobile-nav-open .iaf-header__logo svg .cls-2,
  .iaf-header.is-mobile-nav-closing .iaf-header__logo svg .cls-2 {
    fill: var(--iaf-primary-1, #2398ff);
  }

  .iaf-header.is-mobile-nav-open .iaf-header__menu-toggle,
  .iaf-header.is-mobile-nav-closing .iaf-header__menu-toggle {
    color: var(--iaf-text-on-dark, #eeeeee);
  }

  .iaf-header.is-mobile-nav-open::before,
  .iaf-header.is-mobile-nav-closing::before {
    opacity: 0;
  }

  .iaf-header.is-mobile-nav-open .iaf-header__blur,
  .iaf-header.is-mobile-nav-closing .iaf-header__blur {
    opacity: 0;
    visibility: hidden;
  }
}

/* Hamburger hidden on desktop */
@media (min-width: 1024px) {
  .iaf-header__menu-toggle,
  .iaf-header__mobile-nav {
    display: none !important;
  }
}

html.iaf-mobile-nav-open,
body.iaf-mobile-nav-open {
  overflow: hidden;
  overscroll-behavior: none;
  touch-action: none;
}

@media (prefers-reduced-motion: reduce) {
  body::before {
    transition-duration: 200ms;
  }

  body.iaf-mega-menu-open::before {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }

  .iaf-header__top,
  .iaf-header__inner,
  .iaf-header__item,
  .iaf-header__logo,
  .iaf-header__panel-link,
  .iaf-header__panel-accent-link,
  .iaf-header__panels,
  .iaf-header__panel,
  .iaf-header__panel-inner {
    transition-duration: 200ms;
  }

  .iaf-header__panel.is-active .iaf-header__panel-inner {
    transition-delay: 0ms;
  }

  .iaf-header__panel-link:hover,
  .iaf-header__panel-link:focus-visible,
  .iaf-header__panel-accent-link:hover,
  .iaf-header__panel-accent-link:focus-visible {
    transform: none;
  }

  .iaf-header__mobile-nav {
    transition-duration: 200ms;
  }
}

/* Progressive blur — 7 layers (stack marlenmueller.studio, ancré au header : part avec lui au scroll) */
.iaf-header__blur {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: var(--iaf-header-blur-height);
  pointer-events: none;
  z-index: 1;
  isolation: isolate;
}

/* Frost — voile bleu clair au-dessus des couches blur (lisibilité nav). */
.iaf-header__blur::after {
  content: '';
  position: absolute;
  inset: 0;
  z-index: 2;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    var(--iaf-header-blur-frost-top) 0%,
    var(--iaf-header-blur-frost-mid) 38%,
    var(--iaf-header-blur-frost-low) 62%,
    transparent 88%
  );
}

html[data-iaf-theme='dark'] .iaf-header__blur::after {
  background: linear-gradient(
    180deg,
    rgba(210, 232, 255, 0.22) 0%,
    rgba(35, 152, 255, 0.1) 36%,
    rgba(35, 152, 255, 0.04) 62%,
    transparent 88%
  );
}

.iaf-header__blur-layer {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
}

.iaf-header__blur-layer:nth-child(1) {
  backdrop-filter: blur(1px);
  -webkit-backdrop-filter: blur(1px);
  mask: linear-gradient(to top, rgba(0, 0, 0, 0), rgba(0, 0, 0, 1) 10%, rgba(0, 0, 0, 1) 30%, rgba(0, 0, 0, 0) 40%);
  -webkit-mask: linear-gradient(to top, rgba(0, 0, 0, 0), rgba(0, 0, 0, 1) 10%, rgba(0, 0, 0, 1) 30%, rgba(0, 0, 0, 0) 40%);
}

.iaf-header__blur-layer:nth-child(2) {
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
  mask: linear-gradient(to top, rgba(0, 0, 0, 0) 10%, rgba(0, 0, 0, 1) 20%, rgba(0, 0, 0, 1) 40%, rgba(0, 0, 0, 0) 50%);
  -webkit-mask: linear-gradient(to top, rgba(0, 0, 0, 0) 10%, rgba(0, 0, 0, 1) 20%, rgba(0, 0, 0, 1) 40%, rgba(0, 0, 0, 0) 50%);
}

.iaf-header__blur-layer:nth-child(3) {
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  mask: linear-gradient(to top, rgba(0, 0, 0, 0) 15%, rgba(0, 0, 0, 1) 30%, rgba(0, 0, 0, 1) 50%, rgba(0, 0, 0, 0) 60%);
  -webkit-mask: linear-gradient(to top, rgba(0, 0, 0, 0) 15%, rgba(0, 0, 0, 1) 30%, rgba(0, 0, 0, 1) 50%, rgba(0, 0, 0, 0) 60%);
}

.iaf-header__blur-layer:nth-child(4) {
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  mask: linear-gradient(to top, rgba(0, 0, 0, 0) 20%, rgba(0, 0, 0, 1) 40%, rgba(0, 0, 0, 1) 60%, rgba(0, 0, 0, 0) 70%);
  -webkit-mask: linear-gradient(to top, rgba(0, 0, 0, 0) 20%, rgba(0, 0, 0, 1) 40%, rgba(0, 0, 0, 1) 60%, rgba(0, 0, 0, 0) 70%);
}

.iaf-header__blur-layer:nth-child(5) {
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  mask: linear-gradient(to top, rgba(0, 0, 0, 0) 40%, rgba(0, 0, 0, 1) 60%, rgba(0, 0, 0, 1) 80%, rgba(0, 0, 0, 0) 90%);
  -webkit-mask: linear-gradient(to top, rgba(0, 0, 0, 0) 40%, rgba(0, 0, 0, 1) 60%, rgba(0, 0, 0, 1) 80%, rgba(0, 0, 0, 0) 90%);
}

.iaf-header__blur-layer:nth-child(6) {
  backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  mask: linear-gradient(to top, rgba(0, 0, 0, 0) 60%, rgba(0, 0, 0, 1) 80%);
  -webkit-mask: linear-gradient(to top, rgba(0, 0, 0, 0) 60%, rgba(0, 0, 0, 1) 80%);
}

.iaf-header__blur-layer:nth-child(7) {
  backdrop-filter: blur(48px);
  -webkit-backdrop-filter: blur(48px);
  mask: linear-gradient(to top, rgba(0, 0, 0, 0) 70%, rgba(0, 0, 0, 1) 100%);
  -webkit-mask: linear-gradient(to top, rgba(0, 0, 0, 0) 70%, rgba(0, 0, 0, 1) 100%);
}