/* Left sidebar: nine tool FABs in a vertical stack. */
body.page-network {
    --network-sidebar-panel-left: 210px;
}

.network-sidebar-fab {
    position: fixed;
    left: 24px;
    bottom: 24px;
    z-index: 25;
    display: flex;
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
    max-height: calc(100vh - var(--navbar-bottom-px, 6.5rem) - 48px);
    overflow-y: auto;
    overflow-x: visible;
    padding: 2px 4px;
    opacity: 0;
    pointer-events: none;
}

.network-sidebar-fab.is-ready {
    opacity: 1;
    pointer-events: auto;
    transition: opacity 0.12s ease;
}

.network-sidebar-fab:not(.is-ready) .network-tools-btn {
    transition: none;
}

.network-sidebar-item {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-shrink: 0;
}

.network-sidebar-label {
    font-size: 13px;
    font-weight: 500;
    color: #0d47a1;
    white-space: nowrap;
    line-height: 1;
    letter-spacing: 0.01em;
    user-select: none;
    cursor: pointer;
    transition: color 0.15s ease;
}

.network-sidebar-item:has(.network-tools-btn:disabled) .network-sidebar-label,
.network-sidebar-item:has(.network-tools-btn.is-muted) .network-sidebar-label {
    cursor: default;
}

.network-sidebar-item:hover:has(.network-tools-btn:not(:disabled):not(.is-muted)) .network-sidebar-label {
    color: #4b85c7;
}

.network-sidebar-item:has(.network-tools-btn:disabled) .network-sidebar-label,
.network-sidebar-item:has(.network-tools-btn.is-muted) .network-sidebar-label {
    color: #adb5bd;
}

.network-sidebar-item:hover:has(.network-tools-btn.is-muted) .network-sidebar-label {
    color: #adb5bd;
}

.network-sidebar-item:has(.network-tools-btn-danger:not(:disabled):not(.is-muted)) .network-sidebar-label {
    color: #b91c1c;
}

.network-sidebar-item:hover:has(.network-tools-btn-danger:not(:disabled):not(.is-muted)) .network-sidebar-label {
    color: #dc2626;
}

.network-sidebar-item:has(.network-tools-btn-danger:disabled) .network-sidebar-label,
.network-sidebar-item:has(.network-tools-btn-danger.is-muted) .network-sidebar-label {
    color: #adb5bd;
}

.network-sidebar-fab .network-sidebar-item:hover:has(.network-tools-btn:not(:disabled):not(.is-muted)) .network-tools-btn,
.network-sidebar-fab .network-tools-btn:hover:not(:disabled):not(.is-muted) {
    box-shadow: 0 2px 6px rgba(15, 23, 42, 0.08);
}

.network-sidebar-fab .network-sidebar-item:hover:has(.network-tools-btn:not(:disabled):not(.is-muted)) .network-tools-btn,
.network-sidebar-fab .network-tools-btn:hover:not(:disabled):not(.is-muted) {
    background: #f1f3f5;
    border-color: #4b85c7;
}

.network-sidebar-fab .network-sidebar-item:hover:has(.network-tools-btn-danger:not(:disabled):not(.is-muted)) .network-tools-btn-danger,
.network-sidebar-fab .network-tools-btn-danger:hover:not(:disabled) {
    border-color: #ef4444;
    background: #fef2f2;
}

.network-sidebar-fab .network-tools-btn {
    flex-shrink: 0;
}

.network-tools-btn {
    width: 48px;
    height: 48px;
    padding: 0;
    border-radius: 10px;
    background: #f6f8fa;
    border: 1px solid #ced4da;
    box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
    color: #0d47a1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.15s ease, border-color 0.15s ease, opacity 0.15s ease;
}

.network-tools-btn:hover:not(:disabled) {
    background: #f1f3f5;
    border-color: #4b85c7;
}

.network-tools-btn:disabled,
.network-tools-btn.is-muted {
    opacity: 0.4;
}

.network-tools-btn:disabled {
    cursor: default;
}

.network-tools-btn.is-muted:hover {
    background: #f6f8fa;
    border-color: #ced4da;
}

.network-tools-btn-danger {
    color: #b91c1c;
}

.network-tools-btn-danger:hover:not(:disabled) {
    border-color: #ef4444;
    background: #fef2f2;
}

.network-tools-icon {
    width: 22px;
    height: 22px;
    display: block;
    fill: none;
    stroke: currentColor;
    stroke-linecap: round;
    stroke-linejoin: round;
}

#networkSearchBtn .network-fab-icon-filled {
    width: 26px;
    height: 26px;
}

#networkManageBtn .network-fab-icon-filled {
    width: 22px;
    height: 22px;
}

/* Shared typography for floating tool panels (Search / Manage / Router / Agent). */
.network-tool-panel,
.agent-panel,
.router-panel {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    font-size: 13px;
    line-height: 1.55;
    color: #212529;
}

.tool-panel-intro {
    margin: 0;
    padding: 10px 14px 12px;
    font-size: 13px;
    line-height: 1.55;
    color: #5c636a;
    border-bottom: 1px solid #e9ecef;
    flex-shrink: 0;
    background: #ffffff;
}

.tool-panel-intro strong {
    color: #212529;
    font-weight: 600;
}

/* Floating tool panels (Guide / Search / Download / Delete). */
.network-tool-panel {
    position: fixed;
    bottom: 24px;
    left: var(--network-sidebar-panel-left, 210px);
    max-width: calc(100vw - 48px);
    background: rgba(255, 255, 255, 0.97);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid #ced4da;
    border-radius: 12px;
    box-shadow: 0 6px 18px rgba(0, 0, 0, 0.08);
    z-index: 45;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.network-tool-panel.hidden {
    display: none;
}

.network-search-panel {
    width: 360px;
}

.network-guide-panel {
    width: 330px;
    max-height: min(72vh, 560px);
}

.network-action-panel {
    width: max-content;
    min-width: 280px;
    max-width: min(600px, calc(100vw - var(--network-sidebar-panel-left, 210px) - 48px));
    max-height: min(72vh, 520px);
}

#networkManagePanel {
    max-height: min(92vh, 760px);
}

#networkManagePanel .network-tool-panel-menu-body {
    overflow-y: visible;
}

.network-guide-panel-body {
    overflow-y: auto;
}

.network-tool-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    padding: 12px 14px;
    background: #f8f9fa;
    border-bottom: 1px solid #ced4da;
    flex-shrink: 0;
    cursor: move;
    user-select: none;
}

.network-tool-panel-title {
    font-family: inherit;
    font-size: 14px;
    font-weight: 600;
    color: #212529;
}

.network-tool-panel-actions {
    display: flex;
    align-items: center;
    gap: 6px;
}

.network-tool-panel-toggle {
    width: 28px;
    height: 28px;
    padding: 0;
    border-radius: 5px;
    background: #ffffff;
    border: 1px solid #ced4da;
    color: #8793a1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
}

.network-tool-panel-toggle:hover {
    background: #f0f4fa;
    border-color: #4b85c7;
    color: #0d47a1;
}

.network-tool-icon-svg {
    width: 16px;
    height: 16px;
    display: block;
}

.network-tool-panel-body {
    padding: 14px 16px 16px;
    display: flex;
    flex-direction: column;
    background: #ffffff;
    color: #212529;
    font-size: 13px;
    flex: 1 1 auto;
    min-height: 0;
}

.network-tool-panel-menu-body {
    padding: 8px;
    overflow-y: auto;
}

.network-tool-panel-body .network-builder-search {
    background: #ffffff;
}

.network-guide-panel-body .explore-legend {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.network-guide-panel-body .explore-legend-tips {
    margin-top: 12px;
    padding-top: 12px;
    border-top: 1px solid #e4e9ee;
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.network-builder-label {
    display: block;
    font-size: 12px;
    margin-bottom: 7px;
    color: var(--text);
    font-weight: 700;
}

.network-builder-search {
    width: 100%;
    box-sizing: border-box;
    border: 1px solid var(--border);
    border-radius: 7px;
    background: var(--surface);
    color: var(--text);
    padding: 7px 9px;
    font-size: 12px;
    font-family: inherit;
}

.network-builder-search:focus {
    outline: none;
    border-color: var(--accent);
}

.network-search-results {
    display: none;
    max-height: 210px;
    overflow-y: auto;
    margin-top: 5px;
    border: 1px solid var(--border);
    border-radius: 7px;
}

.network-search-results.has-results {
    display: block;
}

.network-search-result {
    display: block;
    width: 100%;
    padding: 8px 10px;
    border: 0;
    border-bottom: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    text-align: left;
    cursor: pointer;
    font-size: 12px;
    line-height: 1.3;
}

.network-search-result:last-child {
    border-bottom: 0;
}

.network-search-result:hover:not(:disabled) {
    background: #e8f1fb;
    box-shadow: inset 3px 0 0 var(--accent, #0d47a1);
}

.network-search-result:hover:not(:disabled) .network-result-tag.add-to-network {
    color: var(--accent, #0d47a1);
}

.network-search-result:disabled {
    opacity: 0.55;
    cursor: default;
}

.network-search-result:disabled:hover {
    background: var(--surface);
}

.network-search-result small {
    display: block;
    color: var(--text-hint);
    margin-top: 2px;
    font-size: 11px;
}

.network-result-tag {
    color: var(--text-hint);
    font-size: 11px;
    font-weight: 500;
}

.network-result-tag.add-to-network {
    color: #3980b7;
    font-weight: 700;
}

.network-result-tag.network-result-status {
    color: inherit;
    font-size: inherit;
    font-weight: inherit;
}

.network-search-status {
    padding: 9px 10px;
    color: var(--text-hint);
    font-size: 12px;
}

.network-search-error {
    color: #b36d5b;
}

.network-builder-row {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 6px;
}

.network-builder-inline-group {
    display: flex;
    align-items: center;
    gap: 6px;
}

.network-builder-inline-label {
    font-size: 12px;
    color: var(--text);
    font-weight: 600;
}

.network-builder-btn {
    border: 1px solid var(--border);
    border-radius: 7px;
    background: var(--surface);
    color: #0d47a1;
    font-size: 13px;
    font-weight: 600;
    padding: 7px 9px;
    cursor: pointer;
}

.network-builder-btn:hover:not(:disabled) {
    border-color: #4b85c7;
    background: #f0f4fa;
}

.network-builder-btn:disabled {
    cursor: default;
    opacity: .45;
}

.network-builder-btn.network-builder-danger {
    color: #b91c1c;
}

.network-builder-btn.network-builder-danger:hover:not(:disabled) {
    border-color: #dc2626;
    background: #fdf2f2;
}

.network-builder-btn-apply {
    margin-left: auto;
}

.network-builder-card .network-builder-row .network-builder-btn {
    flex: 1 1 0;
    text-align: center;
}

.network-builder-row-secondary {
    margin-top: 6px;
}

.network-action-group {
    position: relative;
}

/* Action panel bodies reuse the right-click context-menu look (.network-context-*). */
.network-tool-panel-menu-body > .network-context-heading:first-child {
    padding-top: 2px;
}

.network-tool-panel-menu-body .network-context-heading.is-section-break {
    margin-top: 8px;
    padding-top: 10px;
    border-top: 1px solid #e9ecef;
}

.network-tool-panel-menu-body .network-context-item-label {
    white-space: nowrap;
    line-height: 1.3;
}

.network-tool-panel-menu-body .network-context-item,
.network-tool-panel-menu-body .network-context-remove {
    white-space: nowrap;
}

.network-tool-panel-menu-body .network-context-item:disabled {
    cursor: default;
    opacity: .4;
}

.network-tool-panel-menu-body .network-context-item:disabled:hover {
    background: transparent;
}

.network-builder-number {
    width: 56px;
    border: 1px solid var(--border);
    border-radius: 7px;
    background: var(--surface);
    color: var(--text);
    padding: 7px 9px;
}

.network-builder-number:disabled {
    opacity: .45;
}

.network-builder-help {
    margin-top: 6px;
    font-size: 11px;
    color: var(--text-hint);
    line-height: 1.4;
}

.network-builder-search-wrap {
    position: relative;
}

.network-neighbor-item {
    display: block;
    width: 100%;
    padding: 8px 10px;
    border: 0;
    border-bottom: 1px solid var(--border);
    background: var(--surface);
    color: var(--text);
    text-align: left;
    cursor: pointer;
    font-size: 12px;
    line-height: 1.3;
}

.network-neighbor-item:last-child {
    border-bottom: 0;
}

.network-neighbor-item:hover:not(:disabled):not(.is-in-network) {
    background: #e8f1fb;
    box-shadow: inset 3px 0 0 var(--accent, #0d47a1);
}

.network-neighbor-item:hover:not(:disabled):not(.is-in-network) .network-result-tag.add-to-network {
    color: var(--accent, #0d47a1);
}

.network-neighbor-item:disabled,
.network-neighbor-item.is-in-network {
    opacity: 0.55;
    cursor: default;
}

.network-neighbor-item:disabled:hover,
.network-neighbor-item.is-in-network:hover {
    background: var(--surface);
}

.network-neighbor-item.is-pending:disabled {
    opacity: 0.75;
    cursor: wait;
}

.network-neighbor-item strong {
    display: block;
    font-weight: 600;
}

.network-neighbor-item small {
    display: block;
    margin-top: 2px;
    color: var(--text-hint);
    font-size: 11px;
}

.network-tools-btn.is-onboarding-target {
    border-color: var(--accent);
    animation: network-onboarding-input-pulse 2.2s ease-in-out infinite;
}

@keyframes network-onboarding-input-pulse {
    0%, 100% {
        box-shadow: 0 0 0 3px rgba(13, 71, 161, 0.14);
    }
    50% {
        box-shadow: 0 0 0 5px rgba(13, 71, 161, 0.26);
    }
}

/* Fixed pointer anchored next to the left sidebar Search button (top set in JS). */
.network-onboarding {
    position: fixed;
    z-index: 26;
    display: flex;
    flex-direction: row;
    align-items: center;
    pointer-events: none;
    opacity: 0;
    --onboarding-scale: 1;
    --onboarding-arrow-length: 36px;
    --onboarding-line-thickness: 3px;
    transition: opacity 0.28s ease, transform 0.28s ease;
}

.network-onboarding--search,
.network-onboarding--node {
    transform: translateX(6px) scale(var(--onboarding-scale));
    transform-origin: left center;
}

.network-onboarding--search.is-visible,
.network-onboarding--node.is-visible {
    opacity: 1;
    transform: translateX(0) scale(var(--onboarding-scale));
}

.network-onboarding--search {
    --onboarding-scale: 1;
    transform: translateX(6px);
}

.network-onboarding--search.is-visible {
    transform: translateX(0);
}

.network-onboarding--node-left {
    transform: translate(-100%, 0) translateX(-6px) scale(var(--onboarding-scale));
    transform-origin: right center;
}

.network-onboarding--node-left.is-visible {
    opacity: 1;
    transform: translate(-100%, 0) translateX(0) scale(var(--onboarding-scale));
}

.network-onboarding-line {
    position: relative;
    flex: 0 0 var(--onboarding-arrow-length);
    width: var(--onboarding-arrow-length);
    height: var(--onboarding-line-thickness);
    min-height: var(--onboarding-line-thickness);
    align-self: center;
    background: var(--accent);
}

.network-onboarding-line::before {
    content: '';
    position: absolute;
    left: -7px;
    top: 50%;
    transform: translateY(-50%);
    border: 6px solid transparent;
    border-right-color: var(--accent);
}

.network-onboarding-line.network-onboarding-line--right::before {
    left: auto;
    right: -7px;
    border: 6px solid transparent;
    border-left-color: var(--accent);
    border-right-color: transparent;
}

.network-onboarding-bubble {
    flex: 0 0 auto;
    box-sizing: border-box;
    width: min(280px, 42vw);
    max-width: min(280px, 42vw);
    padding: 11px 14px;
    border: 1px solid rgba(13, 71, 161, 0.35);
    border-radius: 10px;
    background: #ffffff;
    box-shadow: 0 10px 28px rgba(13, 71, 161, 0.14);
    text-align: left;
}

.network-onboarding-bubble strong {
    display: block;
    margin-bottom: 3px;
    font-size: 13px;
    font-weight: 700;
    color: var(--accent);
}

.network-onboarding-bubble span {
    display: block;
    font-size: 12px;
    line-height: 1.45;
    color: var(--text-muted);
}

@media (max-width: 900px) {
    .network-onboarding-bubble {
        width: min(240px, 60vw);
        max-width: min(240px, 60vw);
    }
}

.network-onboarding-multiselect-box {
    position: fixed;
    z-index: 25;
    box-sizing: border-box;
    border: 2px dashed rgba(13, 71, 161, 0.72);
    border-radius: 10px;
    background: rgba(13, 71, 161, 0.04);
    pointer-events: none;
    opacity: 0;
    transition: opacity 0.28s ease;
}

.network-onboarding-multiselect-box.is-visible {
    opacity: 1;
}

.network-empty-state {
    position: absolute;
    inset: 0;
    display: none;
    place-content: center;
    text-align: center;
    color: var(--text-hint);
    pointer-events: none;
}

.network-empty-state.is-error {
    display: grid;
}

.network-empty-state strong {
    color: var(--text);
    font-size: 18px;
    margin-bottom: 6px;
}

/* 右键节点上下文菜单 */
.network-context-menu {
    position: fixed;
    z-index: 60;
    display: flex;
    flex-direction: column;
    width: max-content;
    /* Bucket labels are long; short gene-name headings must not shrink the menu
       (max-content + width:100% children only sizes to non-stretched content). */
    min-width: 360px;
    max-width: calc(100vw - 24px);
    max-height: calc(100vh - 24px);
    overflow-y: auto;
    padding: 8px;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: 0 14px 36px rgba(75, 86, 98, 0.2);
    font-size: 13px;
    color: var(--text);
    animation: network-context-menu-in 0.12s ease-out;
}

.network-context-menu[hidden] {
    display: none;
}

.network-context-menu.is-dragging {
    user-select: none;
    cursor: grabbing;
}

.network-context-header {
    position: relative;
    padding: 2px 8px 6px;
}

.network-context-header .network-context-subheading {
    padding: 0 0 0 12px;
}

.network-context-back {
    position: absolute;
    left: -1px;
    top: 0;
    flex-shrink: 0;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 20px;
    height: 20px;
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 6px;
    background: transparent;
    color: var(--text-hint);
    cursor: pointer;
    font-size: 13px;
    line-height: 1;
    font-family: inherit;
}

.network-context-back-icon {
    width: 14px;
    height: 14px;
    display: block;
}

.network-context-back:hover {
    background: #f0f4fa;
    color: var(--text-hint);
}

.network-context-back:active {
    background: #e6edf5;
}

@keyframes network-context-menu-in {
    from { opacity: 0; transform: translateY(-4px); }
    to { opacity: 1; transform: translateY(0); }
}

.network-context-heading {
    padding: 6px 8px 4px;
    font-size: 12px;
    font-weight: 700;
    color: var(--text);
    white-space: nowrap;
}

.network-context-subheading {
    padding: 2px 8px 6px;
    font-size: 11px;
    color: var(--text-hint);
    line-height: 1.4;
    white-space: nowrap;
    cursor: grab;
    touch-action: none;
}

/* Multi-line explanatory text (e.g. expand help) is allowed to wrap. */
.network-context-subheading.is-wrap {
    white-space: normal;
}

.network-context-subheading.is-section-break {
    margin-top: 4px;
    padding-top: 10px;
    border-top: 1px solid #e9ecef;
}

.network-context-help-line {
    display: block;
}

.network-context-item,
.network-context-remove {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    width: 100%;
    padding: 8px 10px;
    border: 0;
    border-radius: 7px;
    background: transparent;
    color: var(--text);
    text-align: left;
    cursor: pointer;
    font-size: 13px;
    line-height: 1.3;
    font-family: inherit;
}

.network-context-item:hover {
    background: #f0f4fa;
}

.network-context-menu .network-context-item:disabled,
.network-context-menu .network-context-remove:disabled {
    opacity: 0.45;
    cursor: default;
    pointer-events: none;
}

.network-context-menu .network-context-item:disabled:hover,
.network-context-menu .network-context-remove:disabled:hover {
    background: transparent;
}

.network-context-item-label {
    flex: 1;
    white-space: nowrap;
}

.network-context-count {
    flex-shrink: 0;
    color: var(--text-hint);
    font-size: 11px;
}

.network-context-submenu-arrow {
    flex-shrink: 0;
    color: var(--text-hint);
    font-size: 20px;
    line-height: 0.8;
}

.network-context-divider {
    height: 1px;
    margin: 6px 4px;
    background: var(--border-light);
}

.network-context-remove {
    color: #b91c1c;
    font-weight: 600;
}

.network-context-remove:hover {
    background: #fdf2f2;
}

/* Mark actions get a blue background on hover; keep the text colour unchanged. */
.network-context-mark:hover {
    background: #eaf2fb;
}

.network-context-add-content {
    display: grid;
    width: 100%;
    min-width: 0;
    padding-inline: 8px;
}

.network-context-add-content .network-context-search {
    width: 100%;
    min-width: 0;
}

.network-context-add-content .network-context-search-label {
    display: block;
    margin-bottom: 4px;
    font-size: 12px;
    font-weight: 500;
    color: var(--text-muted);
}

.network-context-add-content .network-context-help {
    padding-inline: 0;
}

.network-context-help {
    padding: 0 8px 6px;
    font-size: 11px;
    color: var(--text-hint);
    line-height: 1.4;
    cursor: grab;
    touch-action: none;
}

.network-context-help.is-wrap {
    white-space: normal;
}

.network-context-search {
    width: 100%;
    box-sizing: border-box;
    margin: 2px 0 6px;
    padding: 7px 9px;
    border: 1px solid var(--border);
    border-radius: 7px;
    background: var(--surface);
    color: var(--text);
    font-size: 12px;
    font-family: inherit;
}

.network-context-search:focus {
    outline: none;
    border-color: var(--accent);
}

.network-context-list {
    width: 100%;
    min-width: 0;
    max-height: 260px;
    overflow-y: auto;
    margin-top: 4px;
    border: 1px solid var(--border);
    border-radius: 7px;
}

.network-context-empty {
    padding: 9px 10px;
    font-size: 12px;
    color: var(--text-hint);
    cursor: grab;
    touch-action: none;
}

.network-neighbor-item.is-picker-target {
    background: #eef4fb;
    box-shadow: inset 3px 0 0 var(--accent);
}

.network-context-item.is-picker-target {
    background: #eef4fb;
}

.network-neighbor-action-picker {
    position: fixed;
    z-index: 61;
    display: flex;
    flex-direction: column;
    min-width: 300px;
    max-width: min(360px, calc(100vw - 24px));
    padding: 6px;
    background: #ffffff;
    border: 1px solid var(--border);
    border-radius: 10px;
    box-shadow: 0 14px 36px rgba(75, 86, 98, 0.22);
    font-size: 13px;
    color: var(--text);
    animation: network-context-menu-in 0.12s ease-out;
}

.network-neighbor-action-picker[hidden] {
    display: none;
}

.network-neighbor-action-picker-heading {
    padding: 4px 10px 6px;
    font-size: 11px;
    color: var(--text-hint);
    line-height: 1.4;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 280px;
}

.network-neighbor-action-option {
    width: 100%;
}

.network-neighbor-action-picker .network-context-item-label {
    white-space: normal;
    line-height: 1.35;
}