/* -------- FONTS -------- */
@font-face {
  font-family: "HelveticaNeue";
  src: url("fonts/HelveticaNeue-Regular.woff2") format("woff2");
  font-weight: 400;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "HelveticaNeue";
  src: url("fonts/HelveticaNeue-Bold.woff2") format("woff2");
  font-weight: 700;
  font-style: normal;
  font-display: swap;
}
@font-face {
  font-family: "HelveticaNeue";
  src: url("fonts/HelveticaNeue-Thin.woff2") format("woff2");
  font-weight: 200;
  font-style: normal;
  font-display: swap;
}

/* -------- BASE -------- */
:root {
  --bg: #000;
  --fg: #fff;
  --muted: #aaa;
  --side: 20px;
  --maxw: 1080px;
}

html, body { height: 100%; }
* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--fg);
  font-family: "HelveticaNeue", -apple-system, BlinkMacSystemFont, Helvetica, Arial, sans-serif;
  line-height: 1.3;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

/* -------- LIENS -------- */
a {
  position: relative;
  color: var(--fg);
  text-decoration: none;
  font-weight: 400;
}
a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -2px;
  width: 0;
  height: 1px;
  background-color: var(--fg);
  opacity: 0;
  transition: width 0.5s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease;
}
a:hover::after {
  width: 100%;
  opacity: 1;
}

/* -------- STRUCTURE -------- */
.page {
  min-height: 100%;
  display: grid;
  grid-template-rows: auto 1fr auto;
}

/* -------- VIDÉO -------- */
#bg-video {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  z-index: -1;
  opacity: 0.8;
}

/* -------- HEADER -------- */
header {
  display: flex;
  align-items: center;
  padding: 18px var(--side);
}
.logo {
  height: 56px;
  width: auto;
}
@media (min-width: 1024px) {
  .logo { height: 66px; }
}

/* -------- MAIN -------- */
main {
  display: grid;
  place-items: start;
  padding: clamp(24px, 8vw, 96px) var(--side);
}
.intro {
  max-width: min(1600px, 85vw);
  font-size: clamp(28px, 4vw, 48px); 
  line-height: 1.1; 
  font-weight: 200;
  transform-origin: top left; 
}

/* -------- FOOTER -------- */
footer {
  padding: 40px 0 60px 0;
}

.footer-grid {
  display: grid;
  width: 100%;
  padding: 0 var(--side);
  gap: clamp(24px, 4vw, 64px);
  grid-template-columns: repeat(5, 1fr);
  justify-content: start;
}


@media (max-width: 1200px) {
  .footer-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 900px) {
  .footer-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 600px) {
  .footer-grid { grid-template-columns: 1fr; }
}

.col h4 {
  margin: 0 0 8px 0;
  font-size: 14px;
  font-weight: 700;
  color: var(--muted);
  text-transform: none;
}
.col p {
  margin: 4px 0;
  font-size: 14px;
}

/* -------- ANIMATION -------- */
.intro, header, footer {
  opacity: 0;
  transform: translateY(6px);
  animation: fadeIn .6s ease forwards;
}
header { animation-delay: .05s; }
.intro { animation-delay: .12s; }
footer { animation-delay: .2s; }

@keyframes fadeIn {
  to { opacity: 1; transform: none; }
}

/* -------- GRAND ÉCRAN -------- */
@media (min-width: 1600px) {
  .intro {
    font-size: clamp(42px, 4vw, 64px);
    line-height: 1.1;
  }
}

/* -------- MOBILE -------- */
@media (max-width: 768px) {
  :root { --side: 24px; }
  header { padding: 24px var(--side); }
  main   { padding: 48px var(--side); }
  footer { padding: 60px 0; }
}