:root {
  color-scheme: light;
  --bg: #fbfaf9;
  --surface: #ffffff;
  --ink: #222222;
  --ink-2: #555555;
  --ink-muted: #888888;
  --border: #dddddd;
  --accent: #256abf;
  --grid: #eeeeee;
}
:root.dark {
  color-scheme: dark;
  --bg: #1a1a19;
  --surface: #232322;
  --ink: #d8d8d5;
  --ink-2: #aaaaa6;
  --ink-muted: #7f7f7b;
  --border: #3a3a38;
  --accent: #86b6ef;
  --grid: #2e2e2c;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: system-ui, -apple-system, "Hiragino Sans", "Noto Sans CJK JP", sans-serif;
  font-size: 14px;
  line-height: 1.6;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 16px 20px 4px;
  max-width: 1080px;
  margin: 0 auto;
}
h1 { font-size: 19px; margin: 0 0 2px; }
.ver { color: var(--ink-muted); font-size: 12px; font-weight: 400; margin-left: 4px; }
.sub { margin: 0; color: var(--ink-muted); font-size: 12px; }
h2 { font-size: 14px; margin: 0 0 10px; color: var(--ink-2); font-weight: 600; }
h3 { font-size: 12px; margin: 0 0 6px; color: var(--ink-muted); font-weight: 500; }

.menu-wrap { position: relative; }
#menuBtn {
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 16px;
  padding: 4px 10px;
  cursor: pointer;
}
.menu {
  position: absolute;
  right: 0;
  top: 36px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 10px 14px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  white-space: nowrap;
  box-shadow: 0 4px 16px rgba(0,0,0,0.25);
  z-index: 20;
}
.menu label { display: flex; align-items: center; gap: 6px; cursor: pointer; }
.menu select { margin-left: 4px; }
.hidden { display: none; }

main {
  max-width: 1080px;
  margin: 0 auto;
  padding: 8px 20px 40px;
  display: flex;
  flex-direction: column;
  gap: 14px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 14px 16px;
}

.heat-row { display: flex; align-items: flex-start; gap: 4px; }
.canvas-stack { position: relative; flex: 1; min-width: 0; touch-action: none; }
.canvas-stack canvas { display: block; width: 100%; }
#heatOv { position: absolute; left: 0; top: 0; pointer-events: none; }
#cbar { flex: 0 0 46px; }

.detail-row { display: flex; flex-direction: column; gap: 14px; }
.detail-box { min-width: 0; }
.detail-box canvas { display: block; width: 100%; border: 1px solid var(--grid); border-radius: 6px; }

.btn-row { margin-top: 10px; display: flex; gap: 10px; flex-wrap: wrap; }
button {
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 5px 12px;
  cursor: pointer;
  font-size: 13px;
}
button:hover { border-color: var(--accent); }
button.active { border-color: var(--accent); color: var(--accent); }

table { border-collapse: collapse; width: 100%; font-size: 13px; }
th, td { border: 1px solid var(--border); padding: 5px 10px; text-align: left; }
th { color: var(--ink-2); font-weight: 600; }
td:first-child { white-space: nowrap; color: var(--ink-2); }

.hint { color: var(--ink-muted); font-size: 12px; margin: 8px 0 0; }

.tooltip {
  position: fixed;
  pointer-events: none;
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 4px 8px;
  font-size: 12px;
  white-space: nowrap;
  box-shadow: 0 2px 10px rgba(0,0,0,0.25);
  z-index: 30;
}