:root {
  --bg: #0f1419;
  --card: #1a2332;
  --text: #e7edf5;
  --muted: #8b9bb4;
  --accent: #3b82f6;
  --accent2: #22c55e;
  --danger: #ef4444;
  --border: #2a3545;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Segoe UI", Roboto, "PingFang SC", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.5;
  min-height: 100vh;
}
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.wrap { max-width: 960px; margin: 0 auto; padding: 1.5rem; }
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 0.75rem 1.25rem; background: var(--card); border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; letter-spacing: 0.02em; }
.nav a { margin-left: 1rem; color: var(--muted); }
.nav a:hover { color: var(--text); }
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1.25rem 1.5rem;
  margin-top: 1rem;
}
h1 { font-size: 1.35rem; margin: 0 0 0.5rem; }
h2 { font-size: 1.1rem; margin: 1.25rem 0 0.5rem; color: var(--muted); font-weight: 600; }
label { display: block; font-size: 0.85rem; color: var(--muted); margin: 0.75rem 0 0.25rem; }
input, select, textarea {
  width: 100%; padding: 0.55rem 0.65rem; border-radius: 6px;
  border: 1px solid var(--border); background: #0b1018; color: var(--text);
}
textarea { min-height: 72px; resize: vertical; }
.btn {
  display: inline-block; padding: 0.55rem 1rem; border-radius: 6px; border: none;
  background: var(--accent); color: #fff; cursor: pointer; font-weight: 600;
  margin-top: 1rem;
}
.btn.secondary { background: #334155; }
.btn.danger { background: var(--danger); }
.msg { padding: 0.65rem 0.85rem; border-radius: 8px; margin: 0.75rem 0; }
.msg.ok { background: rgba(34,197,94,0.15); border: 1px solid rgba(34,197,94,0.35); }
.msg.err { background: rgba(239,68,68,0.12); border: 1px solid rgba(239,68,68,0.35); }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { text-align: left; padding: 0.55rem 0.45rem; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; }
.small { font-size: 0.85rem; color: var(--muted); }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0.75rem; }
@media (max-width: 720px) { .grid2 { grid-template-columns: 1fr; } }