.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
    border-bottom: 1px solid rgba(148, 163, 184, 0.18);
    background: rgba(15, 23, 42, 0.82);
    box-shadow: 0 12px 32px rgba(2, 6, 23, 0.16);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
}

.site-header-inner {
    display: grid;
    grid-template-columns: auto minmax(0, 1fr) auto;
    gap: 1.25rem;
    align-items: center;
    width: min(1320px, calc(100% - 2rem));
    min-height: 4.6rem;
    margin: 0 auto;
}

.site-header-brand {
    display: inline-flex;
    align-items: center;
    gap: 0.55rem;
    color: #f8fafc;
    font-size: 1.05rem;
    font-weight: 800;
    letter-spacing: -0.025em;
    text-decoration: none;
    white-space: nowrap;
}

.site-header-brand:hover,
.site-header-brand:focus-visible {
    color: #ffffff;
}

.site-header-brand-logo {
    display: block;
    width: clamp(6.6rem, 14vw, 11rem);
    height: auto;
    max-width: 100%;
    flex: 0 0 auto;
}

.site-header-brand-logo-light {
    display: none;
}

.site-header-brand-logo-dark {
    display: block;
}

.site-header-menu {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.85rem;
    min-width: 0;
}

.site-header-nav,
.site-header-context-nav,
.site-header-actions,
.site-header-account {
    display: flex;
    align-items: center;
}

.site-header-nav,
.site-header-context-nav {
    gap: 0.2rem;
}

.site-header-context-nav {
    padding-left: 0.65rem;
    border-left: 1px solid rgba(148, 163, 184, 0.25);
}

.site-header-link,
.site-header-account-link {
    display: inline-flex;
    align-items: center;
    min-height: 2.35rem;
    border: 1px solid transparent;
    border-radius: 0.7rem;
    color: #cbd5e1;
    font-size: 0.82rem;
    font-weight: 750;
    padding: 0.45rem 0.7rem;
    text-decoration: none;
    transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.site-header-link:hover,
.site-header-link:focus-visible,
.site-header-account-link:hover,
.site-header-account-link:focus-visible {
    border-color: rgba(125, 211, 252, 0.35);
    background: rgba(14, 165, 233, 0.12);
    color: #ffffff;
    transform: translateY(-1px);
}

.site-header-link.is-active {
    border-color: rgba(129, 140, 248, 0.46);
    background: rgba(129, 140, 248, 0.18);
    color: #eef2ff;
}

.site-header-actions {
    justify-content: flex-end;
    gap: 0.55rem;
    min-width: max-content;
}

.site-header-account {
    gap: 0.45rem;
}

.site-header-greeting {
    max-width: 10rem;
    overflow: hidden;
    color: #94a3b8;
    font-size: 0.78rem;
    font-weight: 700;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.site-header-greeting:empty {
    display: none;
}

.site-header-logout {
    color: #bae6fd;
}

.site-header-picker {
    display: inline-flex !important;
    align-items: center;
    justify-content: center;
    min-width: 2.35rem;
    min-height: 2.35rem;
    padding: 0.5rem !important;
}

.site-header-theme-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.42rem;
    min-width: 5.7rem;
    min-height: 2.35rem;
    border: 1px solid var(--theme-line, rgba(148, 163, 184, 0.3));
    border-radius: 0.7rem;
    background: var(--theme-surface, rgba(255, 255, 255, 0.04));
    color: var(--theme-ink, #e2e8f0);
    cursor: pointer;
    font: inherit;
    font-size: 0.78rem;
    font-weight: 800;
    padding: 0.45rem 0.7rem;
    transition: color 0.2s ease, background-color 0.2s ease, border-color 0.2s ease, transform 0.2s ease;
}

.site-header-theme-toggle:hover,
.site-header-theme-toggle:focus-visible {
    border-color: var(--theme-coral, rgba(125, 211, 252, 0.6));
    background: var(--theme-surface-muted, rgba(14, 165, 233, 0.14));
    color: var(--theme-ink, #ffffff);
    transform: translateY(-1px);
}

.site-header-theme-icon {
    display: inline-grid;
    width: 1.1rem;
    height: 1.1rem;
    place-items: center;
    font-size: 1rem;
    line-height: 1;
}

.site-header-theme-label {
    white-space: nowrap;
}

.site-header-menu-toggle {
    display: none;
    min-height: 2.35rem;
    border: 1px solid rgba(148, 163, 184, 0.3);
    border-radius: 0.7rem;
    background: rgba(255, 255, 255, 0.04);
    color: #e2e8f0;
    cursor: pointer;
    font: inherit;
    font-size: 0.8rem;
    font-weight: 800;
    padding: 0.45rem 0.75rem;
}

.site-header-menu-toggle:hover,
.site-header-menu-toggle:focus-visible {
    border-color: rgba(125, 211, 252, 0.6);
    background: rgba(14, 165, 233, 0.14);
    color: #ffffff;
}

.site-header :focus-visible {
    outline: 3px solid rgba(125, 211, 252, 0.82);
    outline-offset: 2px;
}

body > [data-site-header] + main {
    padding-top: 2rem;
}

@media (max-width: 1080px) {
    .site-header-inner {
        gap: 0.7rem;
    }

    .site-header-link,
    .site-header-account-link {
        font-size: 0.76rem;
        padding-inline: 0.5rem;
    }

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

    .site-header-brand-logo {
        width: 9.5rem;
    }
}

@media (max-width: 820px) {
    .site-header-inner {
        grid-template-columns: auto auto 1fr;
        min-height: 4.25rem;
    }

    .site-header-brand-logo {
        width: 8rem;
    }

    .site-header-menu-toggle {
        display: inline-flex;
        justify-self: start;
        align-items: center;
    }

    .site-header-menu {
        position: absolute;
        top: calc(100% + 0.55rem);
        right: 1rem;
        left: 1rem;
        display: none;
        flex-direction: column;
        align-items: stretch;
        gap: 0.7rem;
        max-height: calc(100vh - 5.25rem);
        overflow-y: auto;
        padding: 0.8rem;
        border: 1px solid rgba(148, 163, 184, 0.24);
        border-radius: 1rem;
        background: rgba(15, 23, 42, 0.97);
        box-shadow: 0 18px 45px rgba(2, 6, 23, 0.35);
    }

    .site-header-menu.is-open {
        display: flex;
    }

    .site-header-nav,
    .site-header-context-nav {
        display: grid;
        gap: 0.3rem;
    }

    .site-header-context-nav {
        padding-top: 0.65rem;
        padding-left: 0;
        border-top: 1px solid rgba(148, 163, 184, 0.22);
        border-left: 0;
    }

    .site-header-link {
        justify-content: flex-start;
        min-height: 2.65rem;
        padding-inline: 0.8rem;
    }

    .site-header-actions {
        justify-self: end;
    }
}

@media (max-width: 480px) {
    .site-header-inner {
        width: min(100% - 1rem, 1320px);
    }

    .site-header-brand-logo {
        width: 6.6rem;
    }

    .site-header-account-link {
        font-size: 0.72rem;
        padding-inline: 0.45rem;
    }

    .site-header-menu {
        right: 0.5rem;
        left: 0.5rem;
    }
}

@media print {
    .site-header {
        display: none !important;
    }
}