:root {
  --bg: #f6f8fb;
  --panel: #ffffff;
  --ink: #1f2937;
  --muted: #64748b;
  --border: #d8dee9;
  --primary: #0e7490;
  --primary-dark: #155e75;
  --accent: #2563eb;
  --success: #16a34a;
  --warning: #d97706;
  --danger: #dc2626;
  --soft: #eef6f8;
  --code: #0f172a;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--bg);
  color: var(--ink);
  font-family: "Microsoft YaHei", "Segoe UI", Arial, sans-serif;
}

.topbar {
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}

h1 {
  margin: 0 0 6px;
  font-size: 20px;
  font-weight: 650;
  letter-spacing: 0;
}

p {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

.top-actions {
  display: flex;
  gap: 10px;
}

button,
select,
input {
  font: inherit;
}

button {
  height: 36px;
  border: 1px solid transparent;
  border-radius: 6px;
  padding: 0 14px;
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.primary {
  background: var(--primary);
  color: #fff;
}

.primary:hover:not(:disabled) {
  background: var(--primary-dark);
}

.secondary {
  background: #fff;
  color: var(--ink);
  border-color: var(--border);
}

.text-button {
  height: 28px;
  color: var(--accent);
  background: transparent;
  padding: 0 4px;
}

.full {
  width: 100%;
}

.layout {
  display: grid;
  grid-template-columns: 340px minmax(0, 1fr);
  min-height: calc(100vh - 76px);
}

.query-panel {
  background: var(--panel);
  border-right: 1px solid var(--border);
  padding: 20px;
  overflow-y: auto;
}

.result-panel {
  padding: 20px;
  overflow: hidden;
}

.section {
  margin-bottom: 22px;
}

.section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  font-weight: 650;
}

label,
.small-title {
  display: block;
  margin-bottom: 8px;
  color: var(--ink);
  font-size: 14px;
  font-weight: 650;
}

select,
input {
  width: 100%;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #fff;
  color: var(--ink);
  padding: 0 10px;
  outline: none;
}

select:focus,
input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(14, 116, 144, 0.12);
}

.filter-rows {
  display: grid;
  gap: 12px;
}

.filter-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
  padding-bottom: 12px;
  border-bottom: 1px solid #edf1f6;
}

.filter-row-actions {
  display: grid;
  grid-template-columns: 1fr 72px;
  gap: 8px;
}

.remove-filter {
  background: #fff;
  color: var(--danger);
  border-color: #f1c5c5;
}

.muted-box {
  background: var(--soft);
  border: 1px solid #d4e8ee;
  border-radius: 8px;
  padding: 14px;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  max-width: 100%;
  border-radius: 6px;
  background: #fff;
  border: 1px solid #cbdde5;
  padding: 5px 8px;
  color: #155e75;
  font-size: 12px;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(130px, 1fr));
  gap: 12px;
  margin-bottom: 14px;
}

.metric {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 14px;
}

.metric span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 8px;
}

.metric strong {
  display: block;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  font-size: 22px;
  font-weight: 700;
}

.tabs {
  display: flex;
  gap: 6px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
}

.tab {
  background: transparent;
  color: var(--muted);
  border-radius: 6px 6px 0 0;
  border-color: transparent;
}

.tab.active {
  background: var(--panel);
  color: var(--primary-dark);
  border-color: var(--border);
  border-bottom-color: var(--panel);
}

.tab-view {
  display: none;
  height: calc(100vh - 186px);
  min-height: 430px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-top: none;
  overflow: auto;
}

.tab-view.active {
  display: block;
}

#graphCanvas {
  width: 100%;
  height: 100%;
  min-height: 430px;
  background: #f9fbfd;
  overflow: hidden;
}

#graphCanvas canvas {
  display: block;
  width: 100%;
  height: 100%;
}

#graphView {
  position: relative;
}

.graph-link {
  stroke: #c8d2df;
  stroke-width: 1.15;
  stroke-opacity: 0.64;
}

.graph-node {
  cursor: pointer;
  outline: none;
}

.graph-node circle {
  filter: drop-shadow(0 1px 2px rgba(15, 23, 42, 0.24));
  transition: stroke-width 0.15s ease, filter 0.15s ease;
}

.graph-node:hover circle,
.graph-node:focus circle {
  stroke-width: 4;
  filter: drop-shadow(0 2px 5px rgba(15, 23, 42, 0.32));
}

.graph-node-label {
  fill: #334155;
  font-size: 11px;
  paint-order: stroke;
  stroke: rgba(249, 251, 253, 0.92);
  stroke-width: 4px;
  stroke-linejoin: round;
  pointer-events: none;
}

.graph-toolbar text {
  fill: #64748b;
  font-size: 12px;
  pointer-events: none;
}

.graph-info {
  position: absolute;
  top: 14px;
  left: 18px;
  max-width: min(520px, calc(100% - 36px));
  color: var(--muted);
  font-size: 12px;
  line-height: 1.6;
  pointer-events: none;
  z-index: 2;
}

.graph-detail {
  position: absolute;
  top: 14px;
  right: 14px;
  width: min(320px, calc(100% - 28px));
  max-height: 220px;
  overflow: auto;
  background: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.12);
  padding: 12px;
}

.graph-detail-title {
  color: var(--ink);
  font-size: 14px;
  font-weight: 700;
  line-height: 1.45;
  margin-bottom: 10px;
  word-break: break-word;
}

.graph-detail dl {
  display: grid;
  grid-template-columns: 64px minmax(0, 1fr);
  gap: 6px 10px;
  margin: 0;
  font-size: 12px;
}

.graph-detail dt {
  color: var(--muted);
}

.graph-detail dd {
  margin: 0;
  color: var(--ink);
  word-break: break-all;
}

#jsonPreview {
  margin: 0;
  min-height: 100%;
  padding: 18px;
  color: #e5edf8;
  background: var(--code);
  font-size: 12px;
  line-height: 1.5;
  overflow: auto;
}

.event-list {
  display: grid;
  gap: 10px;
  padding: 14px;
}

.event-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
  background: #fff;
}

.event-title {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
  color: var(--ink);
  font-weight: 650;
  font-size: 13px;
}

.event-item p {
  line-height: 1.6;
}

.empty {
  padding: 18px;
  color: var(--muted);
}

@media (max-width: 920px) {
  .topbar {
    height: auto;
    align-items: flex-start;
    gap: 14px;
    padding: 16px;
    flex-direction: column;
  }

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

  .query-panel {
    border-right: none;
    border-bottom: 1px solid var(--border);
  }

  .metrics {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .tab-view {
    height: 560px;
  }
}