/* Bare controls in the hero; a slim floating pill emerges on scroll. */
:root {
  --footer-background: linear-gradient(180deg, #202b55 0%, #415a91 100%);
}
.site-header {
  position: sticky;
  top: 20px;
  z-index: 30;
  height: 54px;
  margin-block: 24px 34px;
  padding: 0;
  isolation: isolate;
  background: transparent;
  pointer-events: none;
}
.site-header > .brand,
.site-header > .button {
  pointer-events: auto;
}
.header-surface {
  position: absolute;
  inset: 1px 0;
  z-index: -1;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  box-shadow: 0 3px 12px #2522390a;
  opacity: 0;
  pointer-events: none;
  transition: background-color 400ms ease, border-color 400ms ease;
}
@media (prefers-reduced-motion: reduce) {
  .header-surface { transition: none; }
}
.site-header .button {
  border-radius: 999px;
}
.site-header.is-over-dark .header-surface {
  background: #202b55;
  border-color: #ffffff24;
  box-shadow: 0 5px 20px #0c102b24;
}
.site-header.is-over-dark .brand img {
  filter: brightness(0) invert(1);
}
.site-header .brand img {
  width: 128px;
  transition: filter 300ms ease;
}
@media (prefers-reduced-motion: reduce) {
  .site-header .brand img { transition: none; }
}
.skip-link {
  z-index: 40;
}
/* Fade continuously toward the screen edge, without an opaque band. */
.viewport-fade {
  position: fixed;
  inset: 0;
  z-index: 25;
  overflow: hidden;
  pointer-events: none;
  background: #fff;
  mask-image: linear-gradient(
    to bottom,
    #000 0,
    transparent 144px,
    transparent calc(100% - 40px),
    #0007 calc(100% - 12px),
    #000e 100%
  );
}
.viewport-fade::before,
.viewport-fade::after {
  content: "";
  position: absolute;
  inset: 0 0 auto;
}
.viewport-fade::before {
  height: var(--security-height, 0px);
  transform: translateY(var(--security-y, 100vh));
  background: var(--security-background);
}
.viewport-fade::after {
  /* Extend the final blue past fractional page bounds; never expose the white base. */
  height: max(calc(var(--footer-height, 0px) + 2px), 100vh);
  transform: translateY(var(--footer-y, 100vh));
  background: var(--footer-background) 0 0 / 100% var(--footer-height, 0px)
    no-repeat #415a91;
}
body:has(:focus-visible) .viewport-fade {
  visibility: hidden;
}
@media (max-width: 700px) {
  .viewport-fade {
    mask-image: linear-gradient(
      to bottom,
      #000 0,
      transparent 112px,
      transparent calc(100% - 28px),
      #000d
    );
  }
}
@media print {
  .viewport-fade {
    display: none;
  }
}
#securite,
#humain,
#mission {
  scroll-margin-top: 108px;
}
.site-footer {
  padding-top: 0;
  background: var(--footer-background);
  color: #f8f7fc;
  border-top: 0;
  overflow: clip;
}
.footer-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 150px 235px;
  gap: 54px;
  padding-block: 88px 72px;
}
.footer-identity {
  grid-area: 1 / 1;
  display: flex;
  align-items: flex-start;
  gap: 30px;
}
.footer-wordmark img {
  width: 190px;
  filter: brightness(0) invert(1);
}
.footer-identity p {
  border-left: 1px solid #ffffff30;
  padding: 4px 0 4px 30px;
  color: #cbd5ee;
  font-size: 14px;
  line-height: 1.8;
}
.footer-links {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}
.footer-links[aria-label="Découvrir Uniion"] {
  grid-area: 1 / 2;
}
.footer-links[aria-label="Contact et informations légales"] {
  grid-area: 1 / 3;
}
.footer-links h2 {
  font: 500 11px/1.4 "DM Sans", sans-serif;
  color: #bbc9e8;
  letter-spacing: 1.3px;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  min-height: 36px;
  padding-block: 7px;
  font-size: 13px;
  line-height: 1.6;
}
.footer-links svg {
  width: 13px;
  height: 13px;
}
.footer-signoff {
  grid-area: 1 / 1;
  align-self: end;
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 6px 24px;
  margin-bottom: 8px;
  font-size: 12px;
  line-height: 1.7;
}
.footer-signoff p {
  margin: 0;
}
.footer-signoff span {
  color: #b4b9c9;
}
.footer-art {
  position: relative;
  height: clamp(270px, 30vw, 460px);
  overflow: hidden;
  color: #fff;
}
.footer-art img {
  position: absolute;
  width: min(1050px, 95vw);
  height: auto;
  left: 50%;
  top: 12%;
  transform: translateX(-50%);
  opacity: 0.9;
}
@media (max-width: 1100px) {
  .footer-layout {
    grid-template-columns: minmax(0, 1fr) 140px 210px;
    gap: 36px;
    padding-block: 70px 50px;
  }
  .footer-identity {
    flex-direction: column;
    gap: 20px;
  }
  .footer-identity,
  .footer-links[aria-label] {
    grid-area: auto;
  }
  .footer-signoff {
    grid-area: auto;
    grid-column: 1 / -1;
    margin-bottom: 0;
  }
  .footer-identity p {
    border: 0;
    padding: 0;
  }
}
@media (max-width: 700px) {
  .site-header {
    width: calc(100% - 40px);
    height: 52px;
    top: 12px;
    margin-block: 16px 24px;
    padding: 0;
  }
  .site-header .brand img {
    width: 100px;
  }
  .site-header .button {
    min-height: 44px;
    font-size: 10px;
    padding-inline: 10px;
    letter-spacing: 0.35px;
  }
  .site-header .button svg {
    display: none;
  }
  .footer-layout {
    grid-template-columns: 1fr 1.3fr;
    gap: 38px 24px;
    padding-block: 54px 38px;
  }
  .footer-identity {
    grid-column: 1 / -1;
  }
  .footer-wordmark img {
    width: 170px;
  }
  .footer-links a {
    min-height: 44px;
    font-size: 12px;
  }
  .footer-art {
    height: 245px;
  }
  .footer-art img {
    top: 22%;
    width: 580px;
  }
}