/* ----------------------------------------
   HEADER GLOBAL PREMIUM (EFFET VERRE)
---------------------------------------- */

/* Variables */
:root {
  --text-soft: rgba(255,255,255,0.7);
  --border: rgba(255,255,255,0.12);
  --transition: 0.35s ease;
}

/* Structure du header */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  backdrop-filter: blur(14px);
  background: rgba(0,0,0,0.45);
  border-bottom: 1px solid rgba(255,255,255,0.08);
  padding: 22px 0 30px;
  z-index: 1000;
  transition: var(--transition);
  display: flex;
  justify-content: center;
}

/* Header réduit au scroll */
header.shrink {
  padding: 10px 0 14px;
  backdrop-filter: blur(20px);
  background: rgba(0,0,0,0.75);
}

/* Conteneur du header */
.header-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

/* -------------------------------------------------------------------
   LOGO CENTRAL
------------------------------------------------------------------- */
.header-logo {
  max-width: 260px;
  transition: var(--transition);
}

header.shrink .header-logo {
  max-width: 130px;
}

/* -------------------------------------------------------------------
   LOGO GAUCHE (version parfaite)
------------------------------------------------------------------- */
.header-left-logo {
  position: absolute;
  left: 20px;               /* rapproché du centre */
  top: 50%;
  transform: translateY(-65%);
  width: 90px;
  opacity: 0.85;
  transition: var(--transition);
}

header.shrink .header-left-logo {
  width: 55px;
  opacity: 0.75;
  left: 20px;
}

/* -------------------------------------------------------------------
   NAVIGATION
------------------------------------------------------------------- */
.top-nav {
  display: flex;
  gap: 32px;
  margin-top: 12px;
}

.top-nav a {
  color: var(--text-soft);
  text-decoration: none;
  font-size: 1.05em;
  padding-bottom: 4px;
  position: relative;
  transition: var(--transition);
}

.top-nav a:hover {
  color: white;
}

.top-nav a::after {
  content: "";
  position: absolute;
  bottom: 0;
  height: 1px;
  left: 0;
  width: 0;
  background: white;
  transition: width 0.3s ease;
}

.top-nav a:hover::after {
  width: 100%;
}

/* Instagram */
.insta-menu-link {
  display: flex;
  align-items: center;
}

.insta-menu-logo {
  width: 24px;
  opacity: 0.8;
  transition: var(--transition);
}

.insta-menu-logo:hover {
  opacity: 1;
  transform: scale(1.08);
}

header.shrink .insta-menu-logo {
  width: 18px;
  opacity: 0.75;
}

/* -------------------------------------------------------------------
   RESPONSIVE
------------------------------------------------------------------- */
@media (max-width: 850px) {
  .header-left-logo {
    left: 15px;
    width: 70px;
    transform: translateY(-50%);
  }
  header.shrink .header-left-logo {
    width: 45px;
  }
}

@media (max-width: 600px) {
  .top-nav {
    flex-wrap: wrap;
    justify-content: center;
    gap: 18px;
  }
  .header-logo {
    max-width: 200px;
  }