:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --text: #1d232b;
  --dim: #66707c;
  --line: #dde1e6;
  --accent: #1f6feb;
  font-family: system-ui, -apple-system, 'Segoe UI', sans-serif;
  font-size: 14px;
  color: var(--text);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #14171b;
    --panel: #1c2026;
    --text: #e4e7eb;
    --dim: #9aa3ad;
    --line: #2d333b;
    --accent: #58a6ff;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; background: var(--bg); }
body {
  display: grid;
  grid-template-columns: 300px 1fr;
  grid-template-rows: 1fr auto;
  height: 100%;
}
.side {
  grid-row: 1 / 3;
  background: var(--panel);
  border-right: 1px solid var(--line);
  overflow-y: auto;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.side h1 { font-size: 16px; margin: 0 0 4px; }
.map { position: relative; min-height: 0; }
.cursor {
  font: 12px ui-monospace, monospace;
  padding: 4px 10px;
  color: var(--dim);
  border-top: 1px solid var(--line);
  background: var(--panel);
  min-height: 24px;
}
.toc section { margin-bottom: 8px; }
.group-head {
  width: 100%;
  text-align: left;
  background: none;
  border: 0;
  border-bottom: 1px solid var(--line);
  color: var(--text);
  font-weight: 600;
  padding: 6px 2px;
  cursor: pointer;
}
.count { color: var(--dim); font-weight: 400; }
.empty { color: var(--dim); padding: 6px 4px; font-size: 13px; }
.row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 2px 6px;
  padding: 6px 4px;
  border-bottom: 1px solid var(--line);
}
.row.off .name { color: var(--dim); }
.name { display: flex; gap: 6px; align-items: center; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; cursor: pointer; }
.swatch { flex: none; width: 12px; height: 12px; border: 2px solid; border-radius: 3px; }
.tools { display: flex; gap: 2px; }
.tools button, .add button {
  border: 1px solid var(--line);
  background: var(--bg);
  color: var(--text);
  border-radius: 4px;
  padding: 1px 6px;
  cursor: pointer;
}
.tools button:disabled { opacity: 0.35; cursor: default; }
.opacity { grid-column: 1 / 3; width: 100%; accent-color: var(--accent); }
.note { grid-column: 1 / 3; color: var(--dim); font-size: 12px; }
.add { display: flex; gap: 4px; }
.add input {
  flex: 1;
  min-width: 0;
  padding: 4px 6px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--bg);
  color: var(--text);
}
.status, .hint { color: var(--dim); font-size: 12px; }
@media (max-width: 700px) {
  body { grid-template-columns: 1fr; grid-template-rows: 40vh 1fr auto; }
  .side { grid-row: auto; border-right: 0; border-bottom: 1px solid var(--line); }
}