/* File view header (sticky) and breadcrumb (design-language.md §5, docs/frontend-design.md §3.5). Tokens only. */

.file-head {
    position: sticky;
    top: 0;
    z-index: 5;
    display: flex;
    align-items: center;
    gap: var(--s-3);
    flex: none;
    height: var(--topbar-h);
    padding: 0 var(--s-5);
    background-color: var(--ink-0);
    border-bottom: 1px solid var(--rule);
}

.crumbs {
    display: flex;
    align-items: center;
    gap: var(--s-2);
    min-width: 0;
    overflow: hidden;
    white-space: nowrap;
    font: 400 var(--t-sm) / var(--lh-sm) var(--font-mono);
    color: var(--paper-lo);
}

.crumbs > * {
    flex: none;
}

.crumbs > :last-child {
    flex: 0 1 auto;
    min-width: 0;
    overflow: hidden;
    text-overflow: ellipsis;
}

.crumbs a {
    /* The game accent ink is derived for the rail surface and fails on the darker file head. */
    color: var(--paper-lo);
}

.crumbs a.crumbs__game {
    color: var(--paper-hi);
}

.crumbs a:hover {
    color: var(--paper-hi);
}

.crumbs [aria-current] {
    color: var(--paper-hi);
}

.crumbs__game {
    color: var(--paper-hi);
}

.crumbs__game b {
    font-weight: 500;
    text-transform: uppercase;
}

.crumbs__sep {
    color: var(--paper-lo);
}

.file-head__meta {
    display: flex;
    align-items: center;
    gap: var(--s-2);
    flex: none;
    font: 400 var(--t-xs) / var(--lh-xs) var(--font-mono);
    color: var(--paper-lo);
    white-space: nowrap;
}

.file-head__tag,
.file-head__version {
    color: var(--paper-lo);
}

.file-head__actions {
    display: flex;
    align-items: center;
    gap: var(--s-2);
    margin-left: auto;
    flex: none;
}

@media (max-width: 899.98px) {
    .file-head__lines {
        display: none;
    }
}

@media (max-width: 599.98px) {
    .file-head {
        padding: 0 var(--s-2);
        gap: var(--s-1);
    }

    .file-head__meta {
        display: none;
    }

    .file-head__actions .btn {
        min-width: var(--s-7);
        padding-left: var(--s-2);
        padding-right: var(--s-2);
    }
}