header.site-header
{
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    box-shadow: 0 4px 10px rgba(0,0,0,0.15);
    height: 60px;
}

.header-left {
    flex: 1; /* prend l'espace à gauche */
}

.logo
{
    height: 36px;
    width: auto;
    display: block;
}

.header-title {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    margin: 0;

	font-size: 1.4rem;
	font-weight: bold;
	color: #fff;
	letter-spacing: 0.03em;
	text-transform: uppercase;
	user-select: none;
}

.header-right {
    display: flex;
    align-items: center;
    gap: 12px;
}

.header-link {
	position: relative;
	display: inline-block;
	color: inherit;
	text-decoration: none;
}

.header-link::after {
	content: "";
	position: absolute;
	left: 0;
	bottom: -4px;
	width: 100%;
	height: 2px;
	background-color: currentColor;
	transform: scaleX(0);
	transform-origin: left;
	transition: transform 0.25s ease;
}

.header-link:hover::after,
.header-link:focus-visible::after {
	transform: scaleX(1);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}