:root {
  --bg: #0b0f14;
  --card: #121a24;
  --text: #e7eef8;
  --muted: #a4b3c6;
  --line: #243244;
  --btn: #2b77ff;
  --danger: #ff4d4d;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", "Meiryo", sans-serif;
  background: var(--bg);
  color: var(--text);
}

a { color: inherit; text-decoration: none; }
.container { max-width: 960px; margin: 0 auto; padding: 16px; }

.top {
  border-bottom: 1px solid var(--line);
  background: rgba(18, 26, 36, 0.6);
  backdrop-filter: blur(6px);
}
.brand { display: flex; gap: 12px; align-items: baseline; }
.brand a { font-weight: 700; }
.tag { color: var(--muted); font-size: 12px; }

.nav { display: flex; gap: 12px; align-items: center; }
.top .container { display: flex; justify-content: space-between; align-items: center; }

h1, h2 { margin: 16px 0; }
.lead { color: var(--muted); line-height: 1.6; }

.card {
  border: 1px solid var(--line);
  background: var(--card);
  border-radius: 12px;
  padding: 14px;
}

.card.danger { border-color: var(--danger); }

.list { display: grid; gap: 10px; }
.row { display: flex; justify-content: space-between; gap: 12px; align-items: center; }
.muted { color: var(--muted); font-size: 13px; margin-top: 6px; }

label { display: grid; gap: 6px; margin-bottom: 12px; }
input, textarea, select {
  background: #0e1621;
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  color: var(--text);
}
textarea { resize: vertical; }

.grid2 { display: grid; gap: 12px; grid-template-columns: 1fr 1fr; }
@media (max-width: 720px) { .grid2 { grid-template-columns: 1fr; } }

.btn {
  background: var(--btn);
  border: none;
  color: white;
  padding: 10px 14px;
  border-radius: 10px;
  font-weight: 700;
  cursor: pointer;
}
.btn:disabled { opacity: 0.6; cursor: not-allowed; }

.pill {
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid var(--line);
  color: var(--muted);
}
.pill.open { border-color: #2ecc71; color: #9ef0bf; }
.pill.closed { border-color: #f39c12; color: #ffd39a; }

pre.body {
  white-space: pre-wrap;
  margin: 0;
  line-height: 1.6;
  color: #d7e4f7;
}

.actions { display: flex; gap: 12px; align-items: center; margin-top: 12px; }

.footer { border-top: 1px solid var(--line); margin-top: 24px; color: var(--muted); }