/* Navigation publique partagée : accueil, codex des compétences et armurerie. */

.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    min-height: 66px;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    align-items: center;
    gap: 16px;
    padding: 10px clamp(12px, 4vw, 44px);
    background: rgba(255, 255, 255, 0.96);
    border-bottom: 3px solid var(--text-primary);
    box-shadow: 0 4px 0 var(--text-primary);
    backdrop-filter: blur(10px);
}

.site-header-nav {
    grid-column: 1;
    grid-row: 1;
    justify-self: start;
    display: flex;
    align-items: center;
    gap: 8px;
    min-width: 0;
}

.site-header-brand {
    grid-column: 2;
    grid-row: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 0;
    line-height: 1;
}

.site-header-title {
    color: var(--text-primary);
    font-size: 1.55rem;
    font-weight: 1000;
    letter-spacing: -0.06em;
    line-height: 1;
    text-transform: uppercase;
}

.site-header-subtitle {
    margin-top: 5px;
    color: var(--text-secondary);
    font-size: 0.65rem;
    font-weight: 800;
    letter-spacing: 0.12em;
    line-height: 1;
    text-transform: uppercase;
    white-space: nowrap;
}

.site-header-link {
    width: max-content;
    min-height: 36px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 7px 13px;
    color: var(--text-primary);
    background: var(--bg-surface);
    border: 2px solid var(--text-primary);
    border-radius: 8px;
    box-shadow: var(--shadow-brutal-sm);
    font-size: 0.76rem;
    font-weight: 900;
    line-height: 1.15;
    text-decoration: none;
    transition: transform var(--trans-fast), box-shadow var(--trans-fast), background var(--trans-fast);
}

.site-header-link.is-classes { background: #f3e8ff; }
.site-header-link.is-armory { background: #fef3c7; }

.site-header-link:hover,
.site-header-link:focus-visible {
    transform: translate(-2px, -2px);
    box-shadow: var(--shadow-brutal);
}

.site-header-link:focus-visible {
    outline: 3px solid var(--accent-alt);
    outline-offset: 3px;
}

.site-header-link:active {
    transform: translate(1px, 1px);
    box-shadow: 1px 1px 0 var(--text-primary);
}

.site-header-extra {
    grid-column: 3;
    grid-row: 1;
    justify-self: end;
}

/* L'accueil conserve sa composition historique : marque à gauche, menu à droite. */
.site-header.is-home .site-header-brand {
    grid-column: 1;
    justify-self: start;
    align-items: flex-start;
}

.site-header.is-home .site-header-nav {
    grid-column: 3;
    justify-self: end;
}

@media (max-width: 900px) {
    .site-header-extra { display: none; }

    .site-header:not(.is-home) {
        grid-template-columns: minmax(0, 1fr) auto;
    }

    .site-header:not(.is-home) .site-header-brand {
        grid-column: 2;
        justify-self: end;
        align-items: flex-end;
    }
}

@media (max-width: 560px) {
    .site-header {
        min-height: 58px;
        gap: 8px;
        padding: 8px 10px;
    }

    .site-header-nav { gap: 5px; }

    .site-header-title { font-size: 1.2rem; }

    .site-header-subtitle {
        margin-top: 3px;
        font-size: 0.52rem;
    }

    .site-header-link {
        min-height: 32px;
        padding: 7px 8px;
        box-shadow: 2px 2px 0 var(--text-primary);
        font-size: 0.68rem;
    }
}

@media (max-width: 380px) {
    .site-header { gap: 5px; }

    .site-header-subtitle { display: none; }

    .site-header-link {
        padding-inline: 6px;
        font-size: 0.64rem;
    }
}