/*
 * StylesHeader — en-tête du site (site-header)
 * Variables globales : StylesCommun.css
 */

.site-header {
    position: sticky;
    top: 0;
    z-index: 20;
    width: 100%;
    background: linear-gradient(
        180deg,
        var(--color-surface) 0%,
        color-mix(in srgb, var(--color-accent) 5%, var(--color-surface)) 100%
    );
    border-bottom: 1px solid color-mix(in srgb, var(--color-accent) 22%, var(--color-border));
    box-shadow: 0 0.35vh 1.8vh color-mix(in srgb, var(--color-accent) 10%, transparent);
}

.site-header::before {
    content: "";
    display: block;
    height: 2px;
    background: linear-gradient(
        90deg,
        transparent 0%,
        color-mix(in srgb, var(--color-accent) 70%, #6eb5ff) 50%,
        transparent 100%
    );
    opacity: 0.9;
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
    width: 80vw;
    max-width: 80vw;
    margin: 0 auto;
    padding: 1vh 0.75vw;
    box-sizing: border-box;
}

@media (min-width: 1920px) {
    .site-header__inner {
        width: 90vw;
        max-width: 90vw;
    }
}

.site-header__marque {
    display: flex;
    flex-direction: column;
    gap: 0.15vh;
    min-width: 0;
    padding-left: 0.55rem;
    border-left: 3px solid transparent;
    border-image: linear-gradient(
        180deg,
        var(--color-accent),
        color-mix(in srgb, var(--color-accent) 45%, #6eb5ff)
    ) 1;
}

.site-header__brand {
    position: relative;
    font-size: 1.35rem;
    font-weight: 800;
    letter-spacing: 0.05em;
    line-height: 1.15;
    background-image: linear-gradient(
        115deg,
        var(--color-accent) 0%,
        color-mix(in srgb, var(--color-accent) 55%, #6eb5ff) 55%,
        var(--color-accent) 100%
    );
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    transition: filter 0.15s ease;
}

.site-header__brand:hover,
.site-header__brand:focus-visible {
    filter: brightness(1.12);
}

@supports not ((-webkit-background-clip: text) or (background-clip: text)) {
    .site-header__brand {
        -webkit-text-fill-color: unset;
        color: var(--color-accent);
        background-image: none;
    }
}

.site-header__baseline {
    color: var(--color-text-muted);
    font-size: 0.82rem;
    font-weight: 500;
    letter-spacing: 0.03em;
}

.site-header__nav {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    justify-content: flex-end;
    gap: 0.25rem;
    padding: 0.3vh 0.35vw;
    border: 1px solid color-mix(in srgb, var(--color-accent) 14%, var(--color-border));
    border-radius: 999px;
    background-color: color-mix(in srgb, var(--color-accent) 5%, var(--color-bg));
}

.site-header__link {
    display: inline-flex;
    align-items: center;
    min-height: 2.1rem;
    padding: 0.35vh 0.85vw;
    border: 1px solid transparent;
    border-radius: 999px;
    color: var(--color-text-muted);
    font-size: 0.92rem;
    font-weight: 600;
    letter-spacing: 0.02em;
    transition:
        background-color 0.15s ease,
        border-color 0.15s ease,
        color 0.15s ease,
        box-shadow 0.15s ease;
}

.site-header__link:hover {
    color: var(--color-accent);
    border-color: color-mix(in srgb, var(--color-accent) 28%, var(--color-border));
    background-color: color-mix(in srgb, var(--color-accent) 8%, var(--color-surface));
}

.site-header__link:focus-visible {
    color: var(--color-accent);
    outline: 2px solid color-mix(in srgb, var(--color-accent) 45%, transparent);
    outline-offset: 2px;
}

.site-header__link[aria-current="page"] {
    color: #ffffff;
    background-color: var(--color-accent);
    border-color: var(--color-accent);
    box-shadow: 0 0.15vh 0.65vh color-mix(in srgb, var(--color-accent) 40%, transparent);
}