.topology-shell {
    margin-bottom: 1.25rem;
}

.topology-shell--fixed {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    margin: 0;
    background: rgba(7, 8, 10, 0.94);
    backdrop-filter: blur(6px);
    border-bottom: 1px solid rgba(34, 211, 238, 0.12);
    padding: 0.35rem 0.75rem 0.45rem;
}

.topology-nav {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem 0.75rem;
    padding: 0.55rem 0.75rem;
    background: rgba(34, 211, 238, 0.04);
    border: 1px solid rgba(34, 211, 238, 0.18);
    border-radius: 4px;
    font-size: 0.68rem;
    letter-spacing: 0.04em;
}

.topology-shell--fixed .topology-nav {
    border: none;
    background: transparent;
    padding: 0;
    border-radius: 0;
}

.topology-center {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    color: #22d3ee;
    text-decoration: none;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.12em;
    white-space: nowrap;
}

.topology-center:hover {
    text-decoration: underline;
}

.topology-center.is-here {
    color: #34d399;
    pointer-events: none;
}

.topology-sep {
    color: #5c6570;
    user-select: none;
}

.topology-trail {
    display: inline-flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.35rem;
    list-style: none;
    margin: 0;
    padding: 0;
    color: #5c6570;
}

.topology-trail li {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.topology-trail li + li::before {
    content: "›";
    color: #5c6570;
    margin-right: 0.1rem;
}

.topology-trail a {
    color: #a8b0b8;
    text-decoration: none;
}

.topology-trail a:hover {
    color: #22d3ee;
    text-decoration: underline;
}

.topology-trail [aria-current="page"] {
    color: #e8eaed;
    font-weight: 600;
}

.topology-spokes {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
}

.topology-spokes--row {
    margin-top: 0.5rem;
    padding: 0 0.15rem;
}

.topology-overview {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    margin-left: auto;
}

.topology-overview-label {
    font-size: 0.62rem;
    color: #5c6570;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    white-space: nowrap;
}

.topology-jump {
    font: inherit;
    font-size: 0.72rem;
    color: #c8cdd3;
    background: #0d0f12;
    border: 1px solid #1e2329;
    border-radius: 4px;
    padding: 0.35rem 1.75rem 0.35rem 0.55rem;
    min-width: 9.5rem;
    max-width: 14rem;
    cursor: pointer;
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6' viewBox='0 0 10 6'%3E%3Cpath fill='%235c6570' d='M0 0l5 6 5-6z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.55rem center;
}

.topology-jump:hover,
.topology-jump:focus {
    border-color: rgba(34, 211, 238, 0.45);
    outline: none;
}

.topology-pager {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    margin-top: 0.45rem;
    padding: 0 0.15rem;
    font-size: 0.68rem;
}

.topology-shell--fixed .topology-pager {
    margin-top: 0.35rem;
}

.topology-pager-link {
    color: #a8b0b8;
    text-decoration: none;
    padding: 0.25rem 0;
}

.topology-pager-link:hover {
    color: #22d3ee;
    text-decoration: underline;
}

.topology-pager-disabled {
    color: #3a424c;
    padding: 0.25rem 0;
}

.topology-spoke {
    color: #5c6570;
    text-decoration: none;
    padding: 0.2rem 0.45rem;
    border: 1px solid transparent;
    border-radius: 3px;
}

.topology-spoke:hover {
    color: #22d3ee;
    border-color: rgba(34, 211, 238, 0.25);
    background: rgba(34, 211, 238, 0.06);
}

.topology-spoke.is-here {
    color: #f59e0b;
    border-color: rgba(245, 158, 11, 0.35);
}

.topology-map {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(9rem, 1fr));
    gap: 0.5rem;
    margin: 1.25rem 0 0.5rem;
    flex-basis: 100%;
    width: 100%;
}

.topology-map a {
    display: block;
    padding: 0.65rem 0.75rem;
    border: 1px solid #1e2329;
    border-radius: 4px;
    text-decoration: none;
    color: #c8cdd3;
    font-size: 0.72rem;
    background: rgba(255, 255, 255, 0.02);
    transition: border-color 0.15s, background 0.15s;
}

.topology-map a:hover {
    border-color: rgba(34, 211, 238, 0.45);
    background: rgba(34, 211, 238, 0.05);
}

.topology-map .map-center {
    border-color: rgba(52, 211, 153, 0.45);
    background: rgba(52, 211, 153, 0.06);
    color: #34d399;
    font-weight: 700;
}

.topology-map .map-tag {
    display: block;
    font-size: 0.58rem;
    letter-spacing: 0.14em;
    text-transform: uppercase;
    color: #5c6570;
    margin-bottom: 0.25rem;
}

.topology-nav--compact {
    margin-bottom: 0;
    padding: 0.4rem 0.55rem;
}

.topology-nav--fixed {
    /* legacy: fixed bar now uses .topology-shell--fixed */
}

body.has-topology-fixed {
    padding-top: 4.25rem;
}

@media (max-width: 640px) {
    .topology-overview {
        flex-basis: 100%;
        margin-left: 0;
        margin-top: 0.25rem;
    }

    .topology-jump {
        flex: 1;
        max-width: none;
    }

    body.has-topology-fixed {
        padding-top: 5.5rem;
    }
}