:root {
  --navy: #1a3a5c;
  --blue: #2b6cb0;
  --green: #2f855a;
  --amber: #b7791f;
  --red: #c53030;
  --bg: #f7f8fa;
  --card: #ffffff;
  --border: #e2e5ea;
  --text: #1f2430;
  --text-soft: #5b6472;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: "Hiragino Sans", "Yu Gothic", -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
}

header {
  background: var(--navy);
  color: #fff;
  padding: 20px 24px;
}
header h1 { margin: 0 0 6px; font-size: 24px; }
header .ai-note { margin: 8px 0 0; font-size: 12px; line-height: 1.6; opacity: 0.9; }
header .subtitle { margin: 0; opacity: 0.85; font-size: 14px; }
.date-select-wrap { margin-top: 10px; font-size: 13px; }
.date-select-wrap label { margin-right: 6px; opacity: 0.85; }
.date-select-wrap select {
  padding: 4px 8px;
  border-radius: 6px;
  border: 1px solid rgba(255,255,255,0.4);
  background: rgba(255,255,255,0.1);
  color: #fff;
  font-size: 13px;
}
.date-select-wrap select option { color: #1f2430; }

main {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  padding: 16px;
  max-width: 1100px;
  margin: 0 auto;
}
@media (max-width: 760px) {
  main { grid-template-columns: 1fr; }
}

.chart-panel, .explain-panel, .guardrail-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 16px;
}

.image-tabs { display: flex; gap: 6px; margin-bottom: 10px; flex-wrap: wrap; }
.image-tabs button {
  border: 1px solid var(--border);
  background: #fff;
  border-radius: 6px;
  padding: 6px 10px;
  font-size: 13px;
  cursor: pointer;
  color: var(--text-soft);
}
.image-tabs button.active {
  background: var(--blue);
  color: #fff;
  border-color: var(--blue);
}

#chart-image { width: 100%; border-radius: 6px; border: 1px solid var(--border); }

.badges { display: flex; gap: 8px; margin-bottom: 12px; }
.badge {
  display: inline-block;
  padding: 4px 12px;
  border-radius: 999px;
  font-size: 13px;
  font-weight: bold;
  color: #fff;
}
.badge.pattern { background: var(--navy); }
.badge.confidence.high { background: var(--green); }
.badge.confidence.mid { background: var(--amber); }
.badge.confidence.low { background: var(--red); }

.reader-toggle { display: flex; gap: 6px; margin-bottom: 14px; }
.reader-toggle button {
  flex: 1;
  padding: 8px 10px;
  border: 1px solid var(--blue);
  background: #fff;
  color: var(--blue);
  border-radius: 6px;
  cursor: pointer;
  font-size: 14px;
}
.reader-toggle button.active { background: var(--blue); color: #fff; }

.explain-panel h2 { font-size: 15px; margin: 14px 0 6px; color: var(--navy); }
.explain-panel h2:first-of-type { margin-top: 0; }
.explain-text { margin: 0; line-height: 1.7; font-size: 15px; }
.explain-list { margin: 0; padding-left: 20px; line-height: 1.6; font-size: 14px; }
.caveats { margin-top: 16px; font-size: 12px; color: var(--text-soft); border-top: 1px dashed var(--border); padding-top: 8px; }

.guardrail-panel { max-width: 1100px; margin: 0 auto 16px; }
.guardrail-intro { color: var(--text-soft); font-size: 14px; }
#guardrail-table { width: 100%; border-collapse: collapse; font-size: 14px; }
#guardrail-table th, #guardrail-table td {
  text-align: left;
  padding: 6px 8px;
  border-bottom: 1px solid var(--border);
}
.verdict { font-weight: bold; padding: 2px 8px; border-radius: 6px; color: #fff; font-size: 12px; }
.verdict.OK { background: var(--green); }
.verdict.注意 { background: var(--amber); }
.verdict.NG { background: var(--red); }

.accuracy-note {
  margin-top: 12px;
  background: #fff7e6;
  border: 1px solid #f0d58c;
  border-radius: 6px;
  padding: 10px 12px;
  font-size: 13px;
}

footer { text-align: center; color: var(--text-soft); font-size: 12px; padding: 16px; }