:root {
  --bg: #0f172a;
  --card: #111827;
  --muted: #9ca3af;
  --text: #e5e7eb;
  --brand: #2563eb;
  --accent: #16a34a;
  --danger: #ef4444;
  --border: #1f2937;
}

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

.topbar { display:flex; align-items:center; justify-content:space-between; padding:12px 16px; background:#0b1220; border-bottom:1px solid var(--border); position:sticky; top:0; z-index:10; }
.brand { font-weight:700; color:var(--text); }

.container { max-width: 1100px; margin: 24px auto; padding: 0 16px; }

.card { background: var(--card); border:1px solid var(--border); border-radius:14px; padding:16px; margin-bottom:20px; box-shadow: 0 4px 20px rgba(0,0,0,.25); }

label { display:block; font-size:14px; color:var(--muted); margin: 8px 0 6px; }
input, select, textarea, button {
  width:100%; padding:10px 12px; border-radius:10px; border:1px solid var(--border); background:#0b1220; color:var(--text);
}
textarea { resize: vertical; }

button { cursor:pointer; background:var(--brand); border-color: transparent; font-weight:600; }
button:hover { filter: brightness(1.1); }

.table { width:100%; border-collapse: collapse; }
.table th, .table td { border-bottom:1px solid var(--border); padding:10px; font-size:14px; }
.table th { text-align:left; color: var(--muted); }

.grid-2 { display:grid; grid-template-columns: 1fr 1fr; gap:12px; }
.grid-3 { display:grid; grid-template-columns: repeat(3, 1fr); gap:12px; }
.row { display:flex; align-items:center; gap:10px; }
.full { grid-column: 1 / -1; }
.actions { display:flex; gap:10px; align-items:center; margin-top:10px; }
.muted { color:var(--muted); font-size: 13px; }
.mono { background:#0b1220; padding:12px; border-radius:8px; border:1px solid var(--border); overflow:auto; }
@media (max-width: 720px) { .grid-2, .grid-3 { grid-template-columns: 1fr; } }