/* ==========================================================================
   VORTEX-SDN Interactive Topology Styling
   Canvas viewport, zoom controls, link legends, and node detail slide-out drawer.
   ========================================================================== */

.topology-viewport-card {
  position: relative;
  height: 560px;
  background: radial-gradient(circle at center, #0f172a 0%, #060913 100%);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: inset 0 0 50px rgba(0, 0, 0, 0.6);
}

[data-theme="light"] .topology-viewport-card {
  background: radial-gradient(circle at center, #f1f5f9 0%, #e2e8f0 100%);
  box-shadow: inset 0 0 30px rgba(0, 0, 0, 0.08);
}

#topology-canvas {
  width: 100%;
  height: 100%;
  cursor: grab;
  display: block;
}

#topology-canvas:active {
  cursor: grabbing;
}

/* ==========================================================================
   TOPOLOGY OVERLAY TOOLBAR CONTROLS
   ========================================================================== */

.topo-controls-overlay {
  position: absolute;
  top: 14px;
  right: 14px;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 8px;
  z-index: 10;
  pointer-events: none;
}

.topo-toolbar-group {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 4px;
  box-shadow: var(--shadow-md);
  pointer-events: auto;
}

.topo-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
  outline: none;
}

.topo-btn:hover {
  background: var(--bg-subtle);
  color: var(--text-primary);
  border-color: var(--border-subtle);
}

.topo-btn:active {
  transform: scale(0.94);
}

.topo-btn.active {
  background: rgba(var(--status-danger-rgb), 0.18);
  color: var(--status-danger);
  border-color: var(--status-danger);
}

.topo-toolbar-toggles {
  display: flex;
  align-items: center;
  gap: 4px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 4px;
  box-shadow: var(--shadow-md);
  pointer-events: auto;
}

.topo-toggle-pill {
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 700;
  padding: 3px 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  outline: none;
}

.topo-toggle-pill:hover {
  color: var(--text-primary);
  background: var(--bg-subtle);
}

.topo-toggle-pill.active {
  background: rgba(var(--accent-cyan-rgb), 0.14);
  color: var(--accent-cyan);
  border-color: var(--accent-cyan);
}

/* ==========================================================================
   TOPOLOGY BOTTOM LEGEND
   ========================================================================== */

.topo-legend-overlay {
  position: absolute;
  bottom: 14px;
  left: 14px;
  background: var(--bg-glass);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  padding: 7px 14px;
  font-size: 11px;
  display: flex;
  align-items: center;
  gap: 14px;
  z-index: 10;
  box-shadow: var(--shadow-md);
  flex-wrap: wrap;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 5px;
  color: var(--text-secondary);
  font-size: 11px;
  font-weight: 600;
}

/* ==========================================================================
   NODE & LINK DETAILS SLIDE-OUT DRAWER
   ========================================================================== */

.topo-drawer {
  position: absolute;
  top: 0;
  right: 0;
  width: 320px;
  height: 100%;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-left: 1px solid var(--border-medium);
  box-shadow: var(--shadow-lg);
  z-index: 20;
  transform: translateX(100%);
  transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  display: flex;
  flex-direction: column;
}

.topo-drawer.open {
  transform: translateX(0);
}

.topo-drawer-header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-subtle);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-card);
}

.topo-drawer-body {
  flex: 1;
  overflow-y: auto;
  padding: 14px 16px;
}

.topo-drawer-body::-webkit-scrollbar {
  width: 4px;
}

.topo-drawer-body::-webkit-scrollbar-thumb {
  background: var(--border-medium);
  border-radius: 4px;
}

.topo-prop-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 7px 0;
  border-bottom: 1px solid var(--border-subtle);
  font-size: 11.5px;
}

.topo-prop-label {
  color: var(--text-muted);
  font-weight: 500;
}

.topo-prop-value {
  color: var(--text-primary);
  font-weight: 600;
  font-family: var(--font-mono);
  font-size: 11px;
}

/* ==========================================================================
   Light Mode Overrides for Interactive Topology
   ========================================================================== */
[data-theme="light"] .topo-toolbar-group,
[data-theme="light"] .topo-toolbar-toggles,
[data-theme="light"] .topo-legend-overlay {
  background: rgba(255, 255, 255, 0.96);
  border: 1px solid #d8e1ec;
  box-shadow: 0 4px 12px rgba(15, 23, 42, 0.08);
}

[data-theme="light"] .topo-btn {
  color: #475569;
}

[data-theme="light"] .topo-btn:hover {
  background: #f1f5f9;
  color: #0f172a;
}

[data-theme="light"] .topo-toggle-pill {
  color: #64748b;
}

[data-theme="light"] .topo-toggle-pill:hover {
  color: #0f172a;
  background: #f1f5f9;
}

[data-theme="light"] .topo-toggle-pill.active {
  background: #e0f2fe;
  color: #0284c7;
  border-color: #0284c7;
}

[data-theme="light"] .legend-item {
  color: #334155;
}

[data-theme="light"] .topo-drawer {
  background: rgba(255, 255, 255, 0.98);
  border-left: 1px solid #d8e1ec;
  box-shadow: -4px 0 20px rgba(15, 23, 42, 0.1);
}

[data-theme="light"] .topo-drawer-header {
  background: #f8fafd;
  border-bottom: 1px solid #e2e8f0;
}

[data-theme="light"] .topo-prop-row {
  border-bottom: 1px solid #e2e8f0;
}

[data-theme="light"] .topo-prop-label {
  color: #64748b;
}

[data-theme="light"] .topo-prop-value {
  color: #0f172a;
}