*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --deep: #040508;
  --void: #060810;
  --bg: #080b15;
  --bg-2: #0c1020;
  --bg-3: #101428;
  --bg-4: #161b32;
  --bg-5: #1c2340;
  --border: #141a2e;
  --border-2: #1c2440;
  --border-3: #253055;
  --cyan: #00e5ff;
  --cyan-d: #007aa8;
  --cyan-glow: rgba(0, 229, 255, 0.15);
  --cyan-mid: rgba(0, 229, 255, 0.08);
  --teal: #00ffc8;
  --violet: #8b5cf6;
  --rose: #ff4d8a;
  --amber: #ffb830;
  --lime: #84ff00;
  --orange: #ff7040;
  --text: #b8c8e0;
  --text-2: #5a6b8a;
  --text-3: #2e3a54;
  --text-4: #1a2238;
  --font-ui: "Inter", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", monospace;
  --topbar-h: 50px;
  --panel-w: 272px;
  --r: 5px;
  --r-lg: 9px;
  --r-xl: 14px;
  --trans: 120ms ease;
}

html,
body {
  height: 100%;
  overflow: hidden;
  background: var(--void);
  color: var(--text);
  font-family: var(--font-ui);
  font-size: 13px;
  -webkit-font-smoothing: antialiased;
}

.app {
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.topbar {
  height: var(--topbar-h);
  flex-shrink: 0;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 14px;
  gap: 14px;
  position: relative;
  z-index: 50;
}

.tb-left {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: 1;
  min-width: 0;
  overflow: hidden;
}
.tb-right {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-shrink: 0;
}
.brand-icon {
  width: 22px;
  height: 22px;
  color: var(--cyan);
  filter: drop-shadow(0 0 6px rgba(0, 229, 255, 0.5));
}
.brand-name {
  font-size: 14px;
  font-weight: 700;
  color: #e0eaf8;
  letter-spacing: -0.02em;
}
.brand-sub {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-3);
  letter-spacing: 0.08em;
  padding: 2px 6px;
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  border-radius: 3px;
}

.dataset-tabs {
  display: flex;
  gap: 3px;
  overflow-x: auto;
  scrollbar-width: none;
}
.dataset-tabs::-webkit-scrollbar {
  display: none;
}
.dt-btn {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text-2);
  padding: 4px 12px;
  border-radius: var(--r);
  cursor: pointer;
  transition: all var(--trans);
  white-space: nowrap;
  flex-shrink: 0;
}
.dt-btn:hover {
  background: var(--bg-3);
  color: var(--text);
  border-color: var(--border-2);
}
.dt-btn.active {
  background: var(--cyan-mid);
  border-color: rgba(0, 229, 255, 0.25);
  color: var(--cyan);
}

.search-wrap {
  position: relative;
}
.search-input {
  background: var(--bg-2);
  border: 1px solid var(--border-2);
  border-radius: var(--r);
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--text);
  padding: 6px 10px 6px 28px;
  outline: none;
  width: 160px;
  transition: all var(--trans);
}
.search-input::placeholder {
  color: var(--text-3);
}
.search-input:focus {
  border-color: var(--cyan-d);
  box-shadow: 0 0 0 3px var(--cyan-mid);
}
.si-icon {
  position: absolute;
  left: 9px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-3);
  font-size: 14px;
  pointer-events: none;
}

.tb-divider {
  width: 1px;
  height: 22px;
  background: var(--border-2);
  flex-shrink: 0;
}

.tb-icon-btn {
  width: 30px;
  height: 30px;
  border-radius: var(--r);
  background: transparent;
  border: 1px solid var(--border-2);
  color: var(--text-2);
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--trans);
  flex-shrink: 0;
}
.tb-icon-btn:hover {
  background: var(--bg-3);
  color: var(--text);
  border-color: var(--border-3);
}
.tb-icon-btn.active {
  background: var(--cyan-mid);
  border-color: rgba(0, 229, 255, 0.25);
  color: var(--cyan);
}

.workspace {
  flex: 1;
  display: flex;
  overflow: hidden;
  min-height: 0;
}

.graph-area {
  flex: 1;
  position: relative;
  overflow: hidden;
  background: var(--void);
  background-image:
    radial-gradient(
      ellipse at 30% 20%,
      rgba(0, 229, 255, 0.03) 0%,
      transparent 50%
    ),
    radial-gradient(
      ellipse at 70% 80%,
      rgba(139, 92, 246, 0.03) 0%,
      transparent 50%
    );
  cursor: grab;
}
.graph-area:active {
  cursor: grabbing;
}

#mainSvg {
  width: 100%;
  height: 100%;
  display: block;
}

.graph-overlay {
  position: absolute;
  inset: 0;
  pointer-events: none;
}
.go-topleft {
  position: absolute;
  top: 14px;
  left: 14px;
  pointer-events: auto;
}
.go-bottomleft {
  position: absolute;
  bottom: 14px;
  left: 14px;
  pointer-events: auto;
}
.go-bottomright {
  position: absolute;
  bottom: 14px;
  right: 14px;
  pointer-events: auto;
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 5px;
}

.zoom-display {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-2);
  background: rgba(8, 11, 21, 0.8);
  border: 1px solid var(--border-2);
  border-radius: var(--r);
  padding: 3px 8px;
  backdrop-filter: blur(4px);
}

.minimap-wrap {
  background: rgba(8, 11, 21, 0.85);
  border: 1px solid var(--border-2);
  border-radius: var(--r-lg);
  padding: 8px;
  backdrop-filter: blur(8px);
}
.minimap-wrap #minimapSvg {
  display: block;
}
.minimap-label {
  font-family: var(--font-mono);
  font-size: 8px;
  color: var(--text-3);
  letter-spacing: 0.12em;
  text-align: center;
  margin-top: 4px;
}
.minimap-viewport {
  fill: rgba(0, 229, 255, 0.07);
  stroke: rgba(0, 229, 255, 0.4);
  stroke-width: 1.5;
}

.sim-badge,
.perf-badge {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(8, 11, 21, 0.85);
  border: 1px solid var(--border-2);
  border-radius: var(--r);
  padding: 4px 10px;
  backdrop-filter: blur(4px);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--text-2);
}
.sb-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--text-3);
  flex-shrink: 0;
  transition: background var(--trans);
}
.sb-dot.active {
  background: var(--cyan);
  box-shadow: 0 0 6px var(--cyan);
  animation: pulse 1.5s ease-in-out infinite;
}
@keyframes pulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
}
.pb-icon {
  opacity: 0.6;
}
.pb-sep {
  opacity: 0.3;
}

.selection-info {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 220px;
  background: rgba(8, 11, 21, 0.92);
  border: 1px solid var(--border-2);
  border-radius: var(--r-xl);
  backdrop-filter: blur(12px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);
  animation: siIn 0.2s cubic-bezier(0.34, 1.56, 0.64, 1) both;
  pointer-events: auto;
}
@keyframes siIn {
  from {
    opacity: 0;
    transform: translateY(-8px) scale(0.97);
  }
  to {
    opacity: 1;
    transform: none;
  }
}

.si-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 12px 10px;
  border-bottom: 1px solid var(--border);
}
.si-icon-wrap {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  border: 2px solid;
}
.si-text {
  flex: 1;
  min-width: 0;
}
.si-label {
  font-size: 12px;
  font-weight: 700;
  color: var(--text);
}
.si-id {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-2);
}
.si-close {
  background: none;
  border: none;
  color: var(--text-3);
  cursor: pointer;
  font-size: 14px;
  padding: 2px;
  transition: color var(--trans);
}
.si-close:hover {
  color: var(--text);
}
.si-body {
  padding: 10px 12px 12px;
  display: flex;
  flex-direction: column;
  gap: 5px;
}
.si-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: 11px;
}
.si-row-key {
  color: var(--text-2);
}
.si-row-val {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--cyan);
  font-weight: 600;
}
.si-neighbors {
  font-size: 10px;
  color: var(--text-2);
  margin-top: 4px;
  line-height: 1.6;
}

.control-panel {
  width: var(--panel-w);
  flex-shrink: 0;
  background: var(--bg);
  border-left: 1px solid var(--border);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--border-2) transparent;
}
.control-panel::-webkit-scrollbar {
  width: 4px;
}
.control-panel::-webkit-scrollbar-thumb {
  background: var(--border-2);
  border-radius: 2px;
}

.cp-section {
  border-bottom: 1px solid var(--border);
  padding: 12px 14px;
}
.cp-title {
  font-family: var(--font-mono);
  font-size: 9px;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 10px;
}
.cp-row {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-bottom: 7px;
}
.cp-label {
  font-size: 11px;
  color: var(--text-2);
  flex: 1;
  white-space: nowrap;
  font-weight: 500;
}
.cp-range {
  flex: 1;
  accent-color: var(--cyan);
  cursor: pointer;
  height: 3px;
}
.cp-val {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--cyan);
  min-width: 36px;
  text-align: right;
}

.cp-toggles {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5px;
}
.cp-toggle {
  display: flex;
  align-items: center;
  gap: 5px;
  cursor: pointer;
  font-size: 11px;
  color: var(--text-2);
  padding: 3px 0;
}
.cp-toggle input[type="checkbox"] {
  accent-color: var(--cyan);
  width: 13px;
  height: 13px;
  cursor: pointer;
}
.cp-toggle:hover span {
  color: var(--text);
}

.color-mode-row {
  display: flex;
  gap: 4px;
  flex-wrap: wrap;
}
.cm-btn {
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.04em;
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  color: var(--text-2);
  padding: 4px 10px;
  border-radius: 999px;
  cursor: pointer;
  transition: all var(--trans);
}
.cm-btn:hover {
  background: var(--bg-4);
  color: var(--text);
}
.cm-btn.active {
  background: var(--cyan-mid);
  border-color: rgba(0, 229, 255, 0.25);
  color: var(--cyan);
}

.layout-grid {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 4px;
}
.lg-btn {
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 600;
  background: var(--bg-3);
  border: 1px solid var(--border-2);
  color: var(--text-2);
  padding: 6px 4px;
  border-radius: var(--r);
  cursor: pointer;
  transition: all var(--trans);
  text-align: center;
}
.lg-btn:hover {
  background: var(--bg-4);
  color: var(--text);
  border-color: var(--border-3);
}

.stats-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 5px;
}
.stat-cell {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--r);
  padding: 8px 9px;
}
.sc-label {
  font-family: var(--font-mono);
  font-size: 8px;
  color: var(--text-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  margin-bottom: 2px;
}
.sc-val {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 700;
  color: var(--cyan);
  line-height: 1;
}

.diag-grid {
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.diag-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 10px;
  padding: 4px 8px;
  background: var(--bg-2);
  border-radius: var(--r);
  border: 1px solid var(--border);
}
.diag-key {
  color: var(--text-2);
}
.diag-val {
  font-family: var(--font-mono);
  color: var(--teal);
  font-weight: 600;
}

.node-list {
  display: flex;
  flex-direction: column;
  gap: 3px;
  max-height: 200px;
  overflow-y: auto;
  scrollbar-width: none;
}
.nl-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 5px 7px;
  border-radius: var(--r);
  cursor: pointer;
  transition: background var(--trans);
  border: 1px solid transparent;
}
.nl-item:hover {
  background: var(--bg-3);
  border-color: var(--border-2);
}
.nl-item.selected {
  background: var(--cyan-mid);
  border-color: rgba(0, 229, 255, 0.2);
}
.nl-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
}
.nl-name {
  font-size: 11px;
  font-weight: 500;
  color: var(--text);
  flex: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.nl-deg {
  font-family: var(--font-mono);
  font-size: 9px;
  color: var(--text-3);
}

.hidden {
  display: none !important;
}

.qt-rect {
  fill: none;
  stroke: rgba(0, 229, 255, 0.08);
  stroke-width: 0.5;
}
.cluster-hull {
  fill-opacity: 0.04;
  stroke-opacity: 0.12;
  stroke-width: 1.5;
  stroke-dasharray: 4 3;
}