:root {
  --bg: #f6f7f9;
  --panel: #ffffff;
  --line: #d8dde3;
  --ink: #1b2733;
  --sub: #5d6b7a;
  --accent: #1f6feb;
  --ok: #17864a;
  --warn: #b3720b;
  --alert: #c0392b;
  --slot: #eef2f7;
}
* { box-sizing: border-box; }
body {
  margin: 0; background: var(--bg); color: var(--ink);
  font-family: "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, system-ui, sans-serif;
  font-size: 14px; line-height: 1.6;
}
header {
  background: #16324f; color: #fff; padding: 10px 18px;
  display: flex; align-items: baseline; gap: 18px; flex-wrap: wrap;
}
header h1 { font-size: 16px; margin: 0; font-weight: 600; }
header nav a { color: #cfe0f5; text-decoration: none; margin-right: 14px; font-size: 13px; }
header nav a.on, header nav a:hover { color: #fff; text-decoration: underline; }
header .src { margin-left: auto; font-size: 11px; color: #9ab4d0; }

main { padding: 16px; display: grid; gap: 16px; }
.cols { display: grid; grid-template-columns: minmax(420px, 1.15fr) minmax(380px, 1fr); gap: 16px; align-items: start; }
@media (max-width: 980px) { .cols { grid-template-columns: 1fr; } }
/* 学習者デモ: 左に実機画面（設計幅 1000px を拡縮）、右に支援パネル */
.cols-learner { display: grid; grid-template-columns: minmax(560px, 1.35fr) minmax(340px, 1fr); gap: 16px; align-items: start; }
@media (max-width: 1180px) { .cols-learner { grid-template-columns: 1fr; } }

.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px; }
.panel h2 { font-size: 14px; margin: 0 0 10px; padding-bottom: 6px; border-bottom: 2px solid #e8ecf1; }
.panel h3 { font-size: 13px; margin: 14px 0 6px; color: var(--sub); }
.note { font-size: 12px; color: var(--sub); }

select, button, input { font: inherit; }
select { padding: 4px 6px; border: 1px solid var(--line); border-radius: 4px; background: #fff; }
button {
  padding: 6px 14px; border: 1px solid var(--line); border-radius: 5px;
  background: #fff; cursor: pointer;
}
button:hover { background: #eef3fa; }
button.primary { background: var(--accent); color: #fff; border-color: var(--accent); }
button.primary:hover { background: #1a5fd0; }
button:disabled { opacity: .5; cursor: default; }

.req {
  background: #fffbe9; border: 1px solid #e8dca8; border-radius: 6px;
  padding: 10px 12px; font-size: 15px; font-weight: 600;
}
.slots { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; margin: 12px 0; }
.slot {
  min-height: 74px; background: var(--slot); border: 2px dashed #b9c4d1; border-radius: 6px;
  padding: 8px; font-size: 13px; cursor: pointer; position: relative;
}
.slot.filled { background: #fff; border-style: solid; border-color: var(--accent); }
.slot .idx { position: absolute; top: 2px; right: 6px; font-size: 10px; color: var(--sub); }
.cards { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; }
.card {
  border: 1px solid var(--line); border-radius: 6px; background: #fff; padding: 8px 10px;
  cursor: pointer; font-size: 13px;
}
.card:hover { border-color: var(--accent); background: #f4f8ff; }
.card.used { opacity: .35; cursor: default; background: #f0f0f0; }
.card .cid { font-size: 10px; color: var(--sub); display: block; }

table { border-collapse: collapse; width: 100%; font-size: 12.5px; }
th, td { border-bottom: 1px solid #e6eaef; padding: 4px 6px; text-align: left; }
th { color: var(--sub); font-weight: 600; background: #f8fafc; position: sticky; top: 0; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }

.flagrow { display: flex; gap: 6px; flex-wrap: wrap; margin: 6px 0; }
.flag {
  border-radius: 4px; padding: 3px 8px; font-size: 12px; border: 1px solid;
}
.flag.on { background: #e7f6ec; border-color: #a8d8bb; color: var(--ok); }
.flag.off { background: #fdecea; border-color: #f0b4ac; color: var(--alert); }
.flag.na { background: #f1f3f5; border-color: #dde1e6; color: var(--sub); }

.bar { background: #eaeef3; border-radius: 3px; height: 10px; overflow: hidden; }
.bar > i { display: block; height: 100%; background: var(--accent); }

.msg { border-radius: 6px; padding: 10px 12px; margin-top: 8px; font-size: 13px; }
.msg.ok { background: #e7f6ec; border: 1px solid #a8d8bb; }
.msg.info { background: #eef2f7; border: 1px solid #d3dae2; }
.msg.warn { background: #fff5e2; border: 1px solid #ecd7a3; }
.msg.alert { background: #fdecea; border: 1px solid #f0b4ac; }

svg text { font-size: 10px; fill: var(--sub); }
.legend { font-size: 11px; color: var(--sub); }
.kpi { display: flex; gap: 18px; flex-wrap: wrap; margin: 4px 0 10px; }
.kpi div { font-size: 12px; color: var(--sub); }
.kpi b { display: block; font-size: 19px; color: var(--ink); font-variant-numeric: tabular-nums; }
.kpi small { display: block; margin-top: 2px; font-size: 10px; color: var(--sub); }
.compare-kpi { padding: 8px 10px; background: #f6f9fc; border: 1px solid #dfe7ef; border-radius: 6px; }
.plain-explanation { margin: 7px 0 10px; padding: 9px 11px; background: #fff8e8; border-left: 4px solid #d79a22; font-size: 12px; line-height: 1.7; }
.bn-status { margin: 6px 0 9px; padding: 8px 10px; font-size: 12px; line-height: 1.55; border-radius: 4px; }
.bn-status.pending { background: #fff3d6; border: 1px solid #e7c46b; }
.bn-status.observed { background: #e8f5ed; border: 1px solid #9bceb0; }
.probability-row { display: grid; gap: 8px; align-items: center; margin: 5px 0; }
.probability-label { min-width: 0; font-size: 12px; line-height: 1.25; }
.probability-label small { display: block; color: var(--ok); font-size: 10px; font-weight: bold; }
.probability-value { font-size: 12px; text-align: right; font-variant-numeric: tabular-nums; }
.paired-action { margin: 7px 0 10px; }
.paired-action-label { margin-bottom: 3px; font-size: 12px; line-height: 1.25; }
.paired-action-label small { margin-left: 7px; color: var(--ok); font-weight: bold; }
.paired-line { display: grid; grid-template-columns: 82px 1fr 48px; gap: 7px; align-items: center; margin: 2px 0; }
.paired-source { font-size: 10.5px; color: var(--sub); font-variant-numeric: tabular-nums; }
.pill { display: inline-block; padding: 1px 7px; border-radius: 10px; font-size: 11px; border: 1px solid var(--line); }
.pill.alert { background: #fdecea; border-color: #f0b4ac; color: var(--alert); }
.pill.warn { background: #fff5e2; border-color: #ecd7a3; color: var(--warn); }
.pill.ok { background: #e7f6ec; border-color: #a8d8bb; color: var(--ok); }
.scroll { max-height: 340px; overflow: auto; }
code { background: #f0f3f6; padding: 1px 4px; border-radius: 3px; font-size: 12px; }

/* デモ操作バー（実機の画面と区別するため、あえて別の見た目にする） */
.demobar { display: flex; gap: 14px; align-items: center; flex-wrap: wrap; padding: 10px 14px; }
.demobar .tagline {
  font-size: 11px; letter-spacing: .1em; color: #fff; background: #16324f;
  border-radius: 3px; padding: 2px 8px;
}
.badge {
  font-size: 10.5px; font-weight: normal; color: var(--sub);
  border: 1px solid var(--line); border-radius: 10px; padding: 1px 8px; margin-left: 8px;
}