:root {
  --bg: #f4f5f7;
  --card: #fff;
  --text: #1a1a2e;
  --muted: #5c6370;
  --border: #e3e5e8;
  --accent: #1264a3;
  --danger: #c03532;
  --ok: #2a7a2a;
  --nav-w: 220px;
}
* { box-sizing: border-box; }
/* システムのダークモードで「白背景+白/極薄文字」になるのを防ぐ */
html {
  color-scheme: light;
  background: #f4f5f7;
  color: #1a1a2e;
}
html, body { margin: 0; min-height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Hiragino Sans', sans-serif;
  background: #f4f5f7;
  color: #1a1a2e;
  line-height: 1.5;
  display: flex;
  min-height: 100vh;
}
a { color: var(--accent); }
.app-nav {
  width: var(--nav-w);
  background: #1a1a2e;
  color: #e8e8ed;
  padding: 1rem 0;
  flex-shrink: 0;
  position: sticky;
  top: 0;
  align-self: flex-start;
  min-height: 100vh;
}
.app-nav h1 {
  font-size: 0.9rem;
  font-weight: 600;
  margin: 0 1rem 1.25rem;
  letter-spacing: 0.02em;
}
.app-nav a {
  display: block;
  padding: 0.45rem 1.25rem;
  color: #c1c3d0;
  text-decoration: none;
  font-size: 0.9rem;
  border-left: 3px solid transparent;
  cursor: pointer;
}
.app-nav a:hover, .app-nav a.active {
  color: #fff;
  background: rgba(255,255,255,0.06);
  border-left-color: var(--accent);
}
.app-main { flex: 1; padding: 1.5rem 2rem; max-width: 1200px; }
h2 { font-size: 1.25rem; margin: 0 0 1rem; font-weight: 600; }
section.panel {
  display: none;
  background: var(--card);
  border-radius: 8px;
  border: 1px solid var(--border);
  padding: 1.25rem 1.5rem;
  margin-bottom: 1rem;
}
section.panel.is-visible { display: block; }
.config-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 1.25rem;
  padding: 0.75rem 1rem;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.875rem;
}
.config-bar label { display: flex; align-items: center; gap: 0.4rem; }
.config-bar input[type="url"] {
  width: min(100%, 420px);
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 4px;
}
.toast { padding: 0.6rem 0.9rem; border-radius: 6px; font-size: 0.85rem; margin-bottom: 1rem; }
.toast.error { background: #fde8e8; color: #7a1f1b; }
.toast.ok { background: #e8f4e8; color: #1f5a1f; }
.btn {
  display: inline-block;
  padding: 0.4rem 0.9rem;
  font-size: 0.85rem;
  border-radius: 4px;
  border: 1px solid var(--border);
  background: #fff;
  cursor: pointer;
  text-decoration: none;
  color: var(--text);
}
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn-primary { background: var(--accent); color: #fff; border-color: #0d4f82; }
.btn-danger { color: #fff; background: var(--danger); border-color: #9a2b29; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: 0.85rem; }
th, td { text-align: left; padding: 0.5rem 0.65rem; border-bottom: 1px solid var(--border); }
th { font-weight: 600; color: var(--muted); background: #fafbfc; }
tr:hover td { background: #fafbfc; }
form.grid {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 0.6rem 0.8rem;
  max-width: 640px;
  align-items: center;
  margin: 0.5rem 0 1rem;
}
form.grid label { color: var(--muted); font-size: 0.85rem; }
form.grid input, form.grid select, form.grid textarea {
  width: 100%;
  max-width: 100%;
  padding: 0.4rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  font: inherit;
}
form.grid .full { grid-column: 1 / -1; }
.hint { font-size: 0.8rem; color: var(--muted); }
.stack { display: flex; flex-wrap: wrap; gap: 0.4rem; align-items: center; }
.loading { color: var(--muted); font-size: 0.9rem; }
.muted { color: var(--muted); font-size: 0.85rem; }
details.rule-detail { margin: 0.4rem 0; font-size: 0.8rem; }
pre.json { background: #1e1e2e; color: #e0e0e0; padding: 0.75rem; border-radius: 6px; overflow: auto; max-height: 240px; font-size: 0.75rem; }
pre.audit-diff { background: #1e1e2e; color: #e0e0e0; padding: 0.5rem; border-radius: 6px; overflow: auto; max-height: 10em; font-size: 0.72rem; margin: 0; white-space: pre-wrap; word-break: break-word; }
#req-modal,
#rule-pr-modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0,0,0,0.45);
  align-items: center;
  justify-content: center;
  padding: 1rem;
}
#req-modal .box,
#rule-pr-modal .box {
  background: var(--card);
  max-width: 640px;
  max-height: 90vh;
  overflow: auto;
  border-radius: 8px;
  padding: 1.25rem 1.5rem;
  border: 1px solid var(--border);
  width: 100%;
}
#rule-pr-modal .box { max-width: 900px; }
#req-modal h3,
#rule-pr-modal h3 { margin-top: 0; font-size: 1.1rem; }