.huawei-shell,
.lab-shell {
  gap: 18px;
}

.lab-shell {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr) auto;
  min-height: calc(100vh - 156px);
}

.huawei-hero,
.lab-hero {
  align-items: flex-start;
}

.huawei-hero-actions,
.lab-hero-actions,
.huawei-toolbar-right,
.huawei-tabs,
.lab-toolbar-actions,
.lab-canvas-toolbar-left,
.lab-form-actions,
.lab-huawei-card-head {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.huawei-panel,
.lab-toolbar-card,
.lab-canvas-card,
.lab-properties-card {
  border-radius: 22px;
}

.lab-toolbar-card,
.lab-canvas-card,
.lab-properties-card {
  height: 100%;
  min-height: 0;
  display: flex;
  flex-direction: column;
}

.huawei-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: end;
  flex-wrap: wrap;
  margin-bottom: 14px;
}

.huawei-search {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  font-weight: 800;
  color: #475569;
}

.huawei-search input {
  min-width: 260px;
}

.huawei-line-count {
  min-height: 42px;
  display: inline-flex;
  align-items: center;
  padding: 0 14px;
  border-radius: 14px;
  background: rgba(15, 23, 42, 0.06);
  color: #0f172a;
  font-weight: 800;
}

.huawei-tab-btn.is-active {
  background: linear-gradient(135deg, #0f172a, #1d4ed8);
  border-color: rgba(29, 78, 216, 0.34);
  color: #f8fafc;
}

.huawei-console-wrap {
  margin-top: 14px;
  border-radius: 20px;
  overflow: hidden;
  border: 1px solid rgba(71, 85, 105, 0.4);
  background:
    radial-gradient(circle at top right, rgba(59, 130, 246, 0.18), transparent 35%),
    linear-gradient(180deg, #020617, #0f172a 48%, #111827);
}

.huawei-console {
  margin: 0;
  min-height: 58vh;
  max-height: 72vh;
  overflow: auto;
  padding: 18px 20px;
  color: #dbeafe;
  font: 13px/1.55 "Fira Code", "JetBrains Mono", "Consolas", monospace;
  white-space: pre-wrap;
  word-break: break-word;
}

.lab-grid {
  display: grid;
  grid-template-columns: 320px minmax(0, 1fr) 340px;
  gap: 18px;
  align-items: stretch;
  min-height: 0;
}

.lab-bottom-panel {
  margin-top: 18px;
}

.lab-action-group {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  padding: 10px 12px;
  border-radius: 18px;
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.96), rgba(238, 242, 255, 0.92));
  border: 1px solid rgba(148, 163, 184, 0.18);
}

.lab-action-group-title,
.lab-section-kicker {
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #64748b;
}

.lab-action-group .is-active,
#btn-lab-link-mode.is-active {
  background: linear-gradient(135deg, #0f172a, #1d4ed8);
  color: #f8fafc;
  border-color: rgba(29, 78, 216, 0.34);
}

.lab-section-chip-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.lab-section-chip {
  display: inline-flex;
  align-items: center;
  min-height: 28px;
  padding: 0 10px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.06);
  color: #334155;
  font-size: 11px;
  font-weight: 800;
}

.lab-runtime-actions {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 14px;
}

.lab-runtime-summary {
  margin-top: 14px;
  padding: 12px 14px;
  border-radius: 16px;
  background: rgba(15, 23, 42, 0.05);
  color: #334155;
  font-size: 13px;
  line-height: 1.5;
}

.lab-snapshots-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 14px;
}

.lab-snapshot-item {
  display: flex;
  align-items: stretch;
  gap: 10px;
  width: 100%;
}

.lab-snapshot-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 4px;
  width: 100%;
  padding: 12px 14px;
  border-radius: 16px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  background: linear-gradient(180deg, #172033, #111827);
  color: #f8fafc;
  text-align: left;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.lab-snapshot-main:hover {
  border-color: rgba(96, 165, 250, 0.42);
  transform: translateY(-1px);
}

.lab-snapshot-main strong {
  font-size: 13px;
  color: #f8fafc;
}

.lab-snapshot-main span,
.lab-snapshot-main small,
.lab-snapshot-empty {
  color: #e2e8f0;
  font-size: 12px;
}

.lab-snapshot-delete {
  width: 46px;
  min-width: 46px;
  border-radius: 16px;
  border: 1px solid rgba(239, 68, 68, 0.38);
  background: linear-gradient(180deg, rgba(127, 29, 29, 0.94), rgba(69, 10, 10, 0.96));
  color: #fee2e2;
}

.lab-snapshot-delete:hover {
  border-color: rgba(248, 113, 113, 0.82);
  color: #ffffff;
}

.lab-test-card {
  border-radius: 22px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  background:
    radial-gradient(circle at top right, rgba(59, 130, 246, 0.12), transparent 34%),
    linear-gradient(180deg, #ffffff, #f8fafc);
  padding: 18px;
}

.lab-test-head {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: flex-start;
  margin-bottom: 16px;
}

.lab-test-head h3 {
  margin: 4px 0 6px;
  color: #0f172a;
}

.lab-test-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr) auto;
  gap: 12px;
  align-items: end;
}

.lab-test-grid label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  font-weight: 800;
  color: #475569;
}

.lab-test-actions {
  display: flex;
  align-items: end;
}

.lab-ping-result {
  margin-top: 16px;
  display: grid;
  grid-template-columns: 58px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
  padding: 16px;
  border-radius: 20px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  background: #f8fafc;
}

.lab-ping-result-icon {
  width: 58px;
  height: 58px;
  border-radius: 18px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  font-weight: 900;
  background: rgba(15, 23, 42, 0.06);
  color: #0f172a;
}

.lab-ping-result-body {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.lab-ping-result-body strong {
  color: #0f172a;
  font-size: 16px;
}

.lab-ping-result-body p {
  margin: 0;
  color: #334155;
}

.lab-ping-result-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
  margin-top: 2px;
  font-size: 13px;
  color: #334155;
}

.lab-ping-result.is-success {
  border-color: rgba(34, 197, 94, 0.28);
  background: linear-gradient(180deg, #f0fdf4, #ecfdf5);
}

.lab-ping-result.is-success .lab-ping-result-icon {
  background: rgba(34, 197, 94, 0.14);
  color: #15803d;
}

.lab-ping-result.is-failure {
  border-color: rgba(239, 68, 68, 0.26);
  background: linear-gradient(180deg, #fef2f2, #fff1f2);
}

.lab-ping-result.is-failure .lab-ping-result-icon {
  background: rgba(239, 68, 68, 0.12);
  color: #b91c1c;
}

.lab-ping-result.is-pending {
  border-color: rgba(59, 130, 246, 0.24);
  background: linear-gradient(180deg, #eff6ff, #eef2ff);
}

.lab-ping-result.is-pending .lab-ping-result-icon {
  background: rgba(59, 130, 246, 0.12);
  color: #1d4ed8;
}

.lab-runtime-log {
  margin: 14px 0 0;
  min-height: 170px;
  max-height: 240px;
  overflow: auto;
  padding: 14px 16px;
  border-radius: 18px;
  border: 1px solid rgba(148, 163, 184, 0.18);
  background: #0f172a;
  color: #dbeafe;
  font: 12px/1.6 "Fira Code", "JetBrains Mono", monospace;
  white-space: pre-wrap;
}

.lab-toolbar-head,
.lab-properties-head,
.lab-canvas-toolbar {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
  margin-bottom: 14px;
}

.lab-device-palette {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
}

.lab-device-btn {
  min-height: 46px;
  border-radius: 16px;
  border: 1px solid rgba(148, 163, 184, 0.24);
  background: linear-gradient(135deg, #ffffff, #eff6ff);
  color: #0f172a;
  font-weight: 800;
}

.lab-toolbar-actions,
.lab-toolbar-meta {
  margin-top: 14px;
}

.lab-toolbar-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.lab-mini-card,
.lab-huawei-card {
  border-radius: 18px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: linear-gradient(180deg, #f8fafc, #eef2ff);
}

.lab-mini-card {
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.lab-mini-card span {
  font-size: 12px;
  font-weight: 800;
  color: #64748b;
}

.lab-mini-card strong {
  font-size: 22px;
  color: #0f172a;
}

.lab-huawei-card {
  margin-top: 14px;
  padding: 14px 16px;
}

.lab-stage {
  position: relative;
  min-height: 0;
  height: auto;
  flex: 1 1 auto;
  overflow: auto;
  border-radius: 20px;
  border: 1px solid rgba(51, 65, 85, 0.9);
  background: #111827;
  touch-action: none;
  cursor: grab;
}

.lab-stage.is-panning {
  cursor: grabbing;
}

.lab-stage-viewport {
  position: relative;
  min-width: 100%;
  min-height: 100%;
}

.lab-stage-scene {
  position: absolute;
  left: 0;
  top: 0;
  transform: scale(var(--lab-scale, 1));
  transform-origin: top left;
}

.lab-grid-bg {
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at top, rgba(148, 163, 184, 0.04), transparent 45%),
    linear-gradient(rgba(148, 163, 184, 0.06) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 184, 0.06) 1px, transparent 1px);
  background-size: 28px 28px;
}

.lab-links-layer,
.lab-nodes-layer,
.lab-minimap {
  position: absolute;
  inset: 0;
}

.lab-links-layer {
  width: 100%;
  height: 100%;
  pointer-events: auto;
}

.lab-nodes-layer {
  pointer-events: none;
}

.lab-node {
  position: absolute;
  width: auto;
  min-height: 0;
  padding: 0;
  margin: 0;
  border: none;
  outline: none;
  background: transparent !important;
  color: #e2e8f0;
  box-shadow: none !important;
  cursor: grab;
  user-select: none;
  touch-action: none;
  appearance: none;
  -webkit-appearance: none;
  text-align: center;
  pointer-events: auto;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 4px;
  transition: filter 160ms ease, transform 140ms ease, opacity 140ms ease;
  --device-accent: #7dd3fc;
  --node-shadow: rgba(2, 6, 23, 0.42);
  --node-label: #f8fafc;
}

.lab-node.is-selected {
  outline: none;
  filter: drop-shadow(0 0 0.85rem rgba(56, 189, 248, 0.34));
}

.lab-node.is-ping-path {
  outline: none;
  filter: drop-shadow(0 0 0.95rem rgba(34, 197, 94, 0.36));
}

.lab-node.is-ping-blocked {
  outline: none;
  filter: drop-shadow(0 0 1.05rem rgba(239, 68, 68, 0.42));
}

.lab-node:hover {
  transform: translateY(-1px);
}

.lab-node.device-type-router { --device-accent: #60a5fa; }
.lab-node.device-type-switch { --device-accent: #2dd4bf; }
.lab-node.device-type-huawei { --device-accent: #f59e0b; }
.lab-node.device-type-olt { --device-accent: #c084fc; }
.lab-node.device-type-onu { --device-accent: #4ade80; }
.lab-node.device-type-server { --device-accent: #22d3ee; }
.lab-node.device-type-client { --device-accent: #93c5fd; }
.lab-node.device-type-cloud { --device-accent: #60a5fa; }
.lab-node.device-type-generic { --device-accent: #38bdf8; }

.lab-node.device-down {
  --device-accent: #fb7185;
}

.lab-node.device-warning {
  --device-accent: #f59e0b;
}

.lab-status-badge {
  position: absolute;
  top: -8px;
  right: -10px;
  z-index: 4;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 7px;
  border-radius: 999px;
  font-size: 9px;
  font-weight: 900;
  letter-spacing: 0.06em;
  border: 1px solid rgba(148, 163, 184, 0.18);
  text-transform: uppercase;
  backdrop-filter: blur(8px);
  background: rgba(15, 23, 42, 0.46);
}

.lab-node-figure-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 56px;
  height: 56px;
  min-height: 0;
  margin: 0;
}

.lab-node-figure {
  position: relative;
  width: 56px;
  height: 56px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: var(--device-accent);
  filter: drop-shadow(0 10px 18px var(--node-shadow));
}

.lab-node-icon {
  font-size: 36px;
  line-height: 1;
  text-shadow:
    0 0 12px color-mix(in srgb, var(--device-accent) 24%, transparent),
    0 1px 0 rgba(255, 255, 255, 0.06);
}

.lab-node-icon-fallback {
  display: none;
  font-size: 24px;
  font-weight: 900;
  letter-spacing: 0.06em;
}

.lab-node.node-cloud .lab-node-icon {
  font-size: 38px;
}

.lab-node.node-client .lab-node-icon,
.lab-node.node-server .lab-node-icon,
.lab-node.node-huawei .lab-node-icon {
  font-size: 32px;
}

.lab-node-caption {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0;
  padding: 0;
}

.lab-node-name {
  font-size: 12px;
  font-weight: 900;
  color: var(--node-label);
  max-width: 100%;
  line-height: 1.2;
  text-shadow: 0 1px 1px rgba(0, 0, 0, 0.36);
  white-space: nowrap;
}

.lab-node-model {
  display: none;
}

.lab-node-meta {
  display: none;
}

.lab-status-badge.device-up {
  background: rgba(34, 197, 94, 0.14);
  color: #dcfce7;
  border-color: rgba(34, 197, 94, 0.28);
}

.lab-status-badge.device-down {
  background: rgba(190, 56, 86, 0.2);
  color: #ffe4ea;
  border-color: rgba(244, 114, 182, 0.34);
}

.lab-status-badge.device-warning {
  background: rgba(245, 158, 11, 0.22);
  color: #fde68a;
  border-color: rgba(251, 191, 36, 0.48);
}

.lab-status-dot {
  font-size: 11px;
  line-height: 1;
}

.lab-link-label {
  fill: rgba(203, 213, 225, 0.82);
  font: 10px "Fira Code", "JetBrains Mono", monospace;
  paint-order: stroke;
  stroke: rgba(17, 24, 39, 0.92);
  stroke-width: 4px;
  stroke-linejoin: round;
  pointer-events: auto;
  cursor: pointer;
}

.lab-link-label-lan {
  fill: #bbf7d0;
}

.lab-link-label-trunk {
  fill: #bfdbfe;
}

.lab-link-label-wan {
  fill: #ddd6fe;
}

.lab-link-label-uplink {
  fill: #fde68a;
}

.lab-link-label.is-down {
  fill: #cbd5e1;
  opacity: 0.74;
}

.lab-selection-status {
  color: #cbd5e1;
  font-weight: 700;
}

.lab-minimap {
  inset: auto 16px 16px auto;
  width: 170px;
  height: 120px;
  border-radius: 16px;
  border: 1px solid rgba(148, 163, 184, 0.24);
  background: rgba(15, 23, 42, 0.62);
  backdrop-filter: blur(8px);
  overflow: hidden;
}

.lab-shell.lab-shell-focus .lab-hero,
.lab-shell.lab-shell-focus .lab-toolbar-card,
.lab-shell.lab-shell-focus .lab-properties-card {
  display: none;
}

.lab-shell.lab-shell-focus .lab-grid {
  grid-template-columns: minmax(0, 1fr);
}

.lab-shell.lab-shell-focus .lab-canvas-card {
  padding: 14px;
}

.lab-shell.lab-shell-focus .lab-stage {
  min-height: 88vh;
}

.lab-minimap svg {
  width: 100%;
  height: 100%;
}

.lab-empty-state {
  color: #64748b;
  font-weight: 700;
}

.lab-form-section {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  padding: 14px;
  border-radius: 18px;
  border: 1px solid rgba(148, 163, 184, 0.16);
  background: linear-gradient(180deg, rgba(248, 250, 252, 0.9), rgba(241, 245, 249, 0.8));
}

.lab-form-section-title {
  grid-column: 1 / -1;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #475569;
}

.lab-form {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.lab-form label {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-size: 12px;
  font-weight: 800;
  color: #475569;
}

.lab-form label input,
.lab-form label select,
.lab-form label textarea {
  min-width: 0;
}

.lab-form-wide {
  grid-column: 1 / -1;
}

.lab-form-actions {
  grid-column: 1 / -1;
}

.lab-link-hit {
  cursor: pointer;
  pointer-events: auto;
  transition: stroke 140ms ease, opacity 140ms ease, stroke-width 140ms ease;
}

.lab-link-hitbox {
  pointer-events: stroke;
}

.lab-link-visual {
  pointer-events: none;
}

.lab-link-hit.is-selected {
  stroke: #38bdf8 !important;
}

.lab-link-hit.is-ping-path {
  stroke: #22c55e !important;
  stroke-width: 5 !important;
}

.lab-link-hit.is-ping-blocked {
  stroke: #ef4444 !important;
  stroke-width: 5 !important;
}

@media (max-width: 1280px) {
  .lab-shell {
    grid-template-rows: auto auto auto;
    min-height: auto;
  }

  .lab-grid {
    grid-template-columns: 1fr;
  }

  .lab-test-grid,
  .lab-ping-result-meta,
  .lab-runtime-actions {
    grid-template-columns: 1fr;
  }

  .lab-stage {
    min-height: 60vh;
  }

  .lab-shell.lab-shell-focus .lab-stage {
    min-height: 82vh;
  }
}

@media (max-width: 820px) {
  .huawei-toolbar,
  .lab-canvas-toolbar,
  .lab-toolbar-head,
  .lab-properties-head {
    flex-direction: column;
    align-items: stretch;
  }

  .lab-device-palette,
  .lab-form,
  .lab-toolbar-meta,
  .lab-form-section {
    grid-template-columns: 1fr;
  }

  .huawei-search input {
    min-width: 0;
    width: 100%;
  }

  .huawei-console {
    min-height: 46vh;
  }

  .lab-test-head,
  .lab-hero-actions {
    flex-direction: column;
    align-items: stretch;
  }
}