:root {
  --bg: #f7f5f0;
  --card-bg: #ffffff;
  --text: #23201b;
  --text-sub: #6b645a;
  --border: #e5e0d6;
  --accent: #c8502d;
  --high: #c8102e;
  --high-bg: #fbe4e6;
  --low: #1a5fb4;
  --low-bg: #e3edfb;
  --neutral: #6b645a;
  --neutral-bg: #ecebe6;
  --shadow: 0 1px 3px rgba(0, 0, 0, 0.06), 0 8px 24px rgba(0, 0, 0, 0.05);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1c1a17;
    --card-bg: #262320;
    --text: #f0ece4;
    --text-sub: #a89f92;
    --border: #38342e;
    --accent: #e0662f;
    --high: #ff6b81;
    --high-bg: #3a1c22;
    --low: #6fa8ff;
    --low-bg: #1c2a3a;
    --neutral: #a89f92;
    --neutral-bg: #322e28;
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

* { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: system-ui, -apple-system, "Hiragino Kaku Gothic ProN", "Yu Gothic", "Meiryo", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  padding: 2rem 1.25rem 4rem;
}

.wrap { max-width: 64rem; margin: 0 auto; }

header { text-align: center; margin-bottom: 1.5rem; }
h1 { font-size: 1.6rem; letter-spacing: 0.02em; }
header p { color: var(--text-sub); font-size: 0.92rem; margin-top: 0.4rem; }
.updated { font-size: 0.8rem; }

.toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

#filter {
  flex: 1 1 16rem;
  padding: 0.55rem 0.9rem;
  border-radius: 0.75rem;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text);
  font-size: 0.9rem;
}

.legend { display: flex; gap: 0.5rem; flex-wrap: wrap; }

.badge {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 700;
  white-space: nowrap;
}
.badge-high { color: var(--high); background: var(--high-bg); }
.badge-low { color: var(--low); background: var(--low-bg); }
.badge-neutral { color: var(--neutral); background: var(--neutral-bg); }

.table-scroll-top {
  overflow-x: auto;
  overflow-y: hidden;
  height: 14px;
  position: sticky;
  top: 0;
  z-index: 2;
  background: var(--bg);
}
.table-scroll-top-inner { height: 1px; }

.table-scroll, .detail-table-scroll {
  overflow-x: auto;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 1rem;
  box-shadow: var(--shadow);
}

table { border-collapse: collapse; width: 100%; font-size: 0.85rem; white-space: nowrap; }

thead th {
  position: sticky;
  top: 14px;
  z-index: 1;
  background: var(--card-bg);
  cursor: pointer;
  text-align: right;
  padding: 0.7rem 0.9rem;
  border-bottom: 1px solid var(--border);
  color: var(--text-sub);
  font-weight: 700;
  user-select: none;
}
thead th:nth-child(1), thead th:nth-child(2) { text-align: left; }
thead th.sorted::after { content: " ▾"; }
thead th.sorted.asc::after { content: " ▴"; }

tbody td { padding: 0.6rem 0.9rem; text-align: right; border-bottom: 1px solid var(--border); }
tbody td:nth-child(1), tbody td:nth-child(2) { text-align: left; }
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: color-mix(in srgb, var(--accent) 6%, transparent); cursor: pointer; }
.loading, .empty { text-align: center; color: var(--text-sub); padding: 2rem; }

.to-top-btn {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 10;
  padding: 0.6rem 1rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  box-shadow: var(--shadow);
  color: var(--text);
  font-size: 0.85rem;
  font-weight: 700;
  cursor: pointer;
}
.to-top-btn:hover { background: color-mix(in srgb, var(--accent) 10%, var(--card-bg)); }

.detail {
  margin-top: 1.5rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 1rem;
  box-shadow: var(--shadow);
  padding: 1.25rem 1.4rem 1.5rem;
  position: relative;
}
.detail-close {
  position: absolute;
  top: 0.8rem;
  right: 0.9rem;
  background: none;
  border: none;
  font-size: 1.3rem;
  color: var(--text-sub);
  cursor: pointer;
  line-height: 1;
}
.detail h2 { font-size: 1.15rem; margin-bottom: 0.5rem; padding-right: 2rem; }
.reasons { color: var(--text-sub); font-size: 0.85rem; margin-bottom: 0.9rem; }

.period-toggle { display: flex; gap: 0.5rem; margin-bottom: 0.75rem; }
.period-btn {
  padding: 0.3rem 0.85rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--card-bg);
  color: var(--text-sub);
  font-size: 0.8rem;
  font-weight: 700;
  cursor: pointer;
}
.period-btn.active { color: #fff; background: var(--accent); border-color: var(--accent); }

.chart { width: 100%; height: 180px; display: block; }
.chart-legend { display: flex; gap: 1rem; font-size: 0.78rem; color: var(--text-sub); margin: 0.5rem 0 1rem; }
.dot { display: inline-block; width: 0.6rem; height: 0.6rem; border-radius: 999px; margin-right: 0.3rem; }
.dot-close { background: var(--text); }
.dot-ma25 { background: var(--accent); }
.dot-ma75 { background: var(--low); }

footer {
  margin-top: 2rem;
  text-align: center;
  font-size: 0.78rem;
  color: var(--text-sub);
  line-height: 1.8;
}
footer code { font-size: 0.78rem; }

@media (max-width: 40rem) {
  h1 { font-size: 1.3rem; }
}