:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --border: #d0d7de;
  --ink: #2c3e50;
  --muted: #7a7a7a;
  --accent: #e74c3c;
  --accent-soft: #fdecea;
  --header: #18bc9c;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  height: 100%;
  font-family: -apple-system, "Segoe UI", Roboto, "Helvetica Neue", "PingFang SC",
               "Microsoft YaHei", sans-serif;
  color: var(--ink);
  background: var(--bg);
  overflow: hidden;
}

/* 顶栏 */
.topbar {
  height: 56px;
  display: flex;
  align-items: baseline;
  gap: 12px;
  padding: 0 18px;
  background: var(--header);
  color: #fff;
}
.topbar-title { font-size: 20px; font-weight: 700; }
.topbar-sub { font-size: 13px; opacity: 0.85; }

/* 整体布局 */
.app {
  display: flex;
  height: calc(100vh - 56px);
  gap: 10px;
  padding: 10px;
}

/* 侧边栏 */
.sidebar {
  flex: 0 0 300px;
  width: 300px;
  overflow-y: auto;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 12px;
}
.field { margin-bottom: 12px; }
.field label { display: block; font-size: 13px; font-weight: 600; margin-bottom: 5px; }
.field .val { color: var(--header); font-weight: 700; }
select, input[type="range"] { width: 100%; }
select {
  padding: 7px 8px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 13px;
  background: #fff;
}
input[type="range"] { accent-color: var(--header); }
hr { border: none; border-top: 1px solid var(--border); margin: 12px 0; }

.btn-reset {
  width: 100%;
  padding: 8px;
  font-size: 13px;
  color: var(--accent);
  background: #fff;
  border: 1px solid var(--accent);
  border-radius: 6px;
  cursor: pointer;
}
.btn-reset:hover { background: var(--accent-soft); }

.helpText { font-size: 12px; color: var(--muted); line-height: 1.6; }

/* 颜色图例 */
.leap-color-legend {
  width: 100%;
  max-height: 48vh;
  overflow-y: auto;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 6px 8px;
  font-size: 12px;
  margin-top: 6px;
}
.leap-color-legend-title {
  position: sticky;
  top: -6px;
  background: rgba(255, 255, 255, 0.97);
  font-weight: 700;
  padding: 4px 2px 6px 2px;
  margin-bottom: 2px;
  border-bottom: 1px solid #eee;
}
.leap-legend-row {
  display: flex;
  align-items: flex-start;
  gap: 6px;
  padding: 3px 4px;
  border-radius: 4px;
  cursor: pointer;
}
.leap-legend-row:hover { background: #f2f4f7; }
.leap-legend-row.active { background: var(--accent-soft); outline: 1px solid var(--accent); }
.leap-color-picker {
  width: 16px; height: 16px;
  flex: 0 0 auto; margin-top: 1px; padding: 0;
  border: 1px solid rgba(0, 0, 0, 0.25);
  border-radius: 3px; background: none; cursor: pointer;
}
.leap-legend-text { flex: 1 1 auto; min-width: 0; }
.leap-legend-name { font-weight: 600; word-break: break-word; }
.leap-legend-ann { display: block; color: var(--muted); font-size: 11px; word-break: break-word; }
.leap-legend-mode {
  flex: 0 0 auto; margin-left: 4px;
  color: var(--accent); font-weight: 700; font-size: 11px; white-space: nowrap;
}

/* 主区域 */
.main {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow: hidden;
}
.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.tree-card { flex: 1 1 auto; }
.card-header {
  padding: 8px 12px;
  font-size: 13px;
  font-weight: 600;
  border-bottom: 1px solid var(--border);
  background: #fbfcfd;
  border-radius: 8px 8px 0 0;
}
.card-body {
  flex: 1 1 auto;
  min-height: 0;
  position: relative;
  padding: 10px;
  overflow: hidden;
}
.tree-stage { position: absolute; inset: 10px; }
.tree-stage svg { display: block; width: 100%; height: 100%; cursor: grab; }

/* 置灰开关 */
.gray-toggle {
  position: absolute; top: 8px; left: 8px; z-index: 1001;
  display: flex; align-items: center; gap: 6px;
  background: rgba(255, 255, 255, 0.92);
  padding: 4px 10px; border-radius: 6px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.15);
  font-size: 12px;
}
.switch { position: relative; display: inline-block; width: 34px; height: 18px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider-toggle {
  position: absolute; inset: 0; cursor: pointer;
  background: #ccc; border-radius: 18px; transition: .2s;
}
.slider-toggle::before {
  content: ""; position: absolute; height: 14px; width: 14px; left: 2px; top: 2px;
  background: #fff; border-radius: 50%; transition: .2s;
}
.switch input:checked + .slider-toggle { background: var(--header); }
.switch input:checked + .slider-toggle::before { transform: translateX(16px); }

/* 提示框 */
.leap-tooltip {
  position: absolute; display: none; pointer-events: none; z-index: 1002;
  background: #fff; color: var(--ink); font-size: 13px;
  padding: 8px; border-radius: 5px;
  box-shadow: 3px 3px 8px rgba(0, 0, 0, 0.2);
  max-width: 260px; line-height: 1.5;
}

/* 框选遮罩 */
.leap-box-overlay {
  position: absolute; display: none; pointer-events: none;
  border: 1px dashed var(--accent);
  background: rgba(231, 76, 60, 0.12);
  z-index: 9999;
}

/* 折叠面板 */
.accordion {
  flex: 0 0 auto;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.acc-header {
  width: 100%; text-align: left;
  padding: 10px 12px; font-size: 13px; font-weight: 600;
  background: #fbfcfd; border: none; cursor: pointer; color: var(--ink);
}
.acc-caret { display: inline-block; transition: transform .2s; margin-right: 4px; }
.accordion.open .acc-caret { transform: rotate(90deg); }
.acc-body { border-top: 1px solid var(--border); }
.detail { display: flex; gap: 10px; height: 46vh; padding: 10px; }
.table-wrap { flex: 0 0 55%; min-width: 0; height: 100%; overflow: auto; }
.pies { flex: 1 1 45%; min-width: 0; height: 100%; display: flex; gap: 8px; }
.pie-box { flex: 1 1 50%; min-width: 0; height: 100%; }
.pie { width: 100%; height: 100%; }

/* 树节点 */
path.node { stroke: none; }
path.node.selected { stroke: #7f1d12; stroke-width: 0.7px; }
.branch { fill: none; stroke: #c9ced3; stroke-width: 0.4px; }

/* DataTables 字号微调 */
table.dataTable { font-size: 12px; }