:root {
  --bg: #0f1419;
  --card: #1a2332;
  --border: #2d3a4d;
  --text: #e7ecf3;
  --muted: #8b9cb3;
  --accent: #0082c9;
  --accent-hover: #006aa3;
  --danger: #e74c3c;
  --ok: #27ae60;
  --radius: 10px;
  font-family: system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
}

.hidden { display: none !important; }
.muted { color: var(--muted); }
.center { text-align: center; }
.error { color: #ff8a80; }
.hint { font-size: 0.85rem; color: var(--muted); display: block; margin-top: 4px; }

#app { max-width: 1200px; margin: 0 auto; padding: 24px; }

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
}

.login-card { max-width: 400px; margin: 10vh auto; }
.login-card h1 { margin-top: 0; }

label {
  display: block;
  margin-bottom: 16px;
  font-size: 0.9rem;
}

input, select, button {
  display: block;
  width: 100%;
  margin-top: 6px;
  padding: 10px 12px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text);
  font-size: 1rem;
}

select[multiple] { min-height: 100px; }

button {
  cursor: pointer;
  background: var(--accent);
  border: none;
  font-weight: 600;
}
button:hover { background: var(--accent-hover); }
button.secondary { background: transparent; border: 1px solid var(--border); }
button.danger { background: var(--danger); }
button.small { width: auto; padding: 6px 12px; font-size: 0.85rem; }

.checkbox { display: flex; align-items: center; gap: 8px; }
.checkbox input { width: auto; margin: 0; }

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.topbar h1 { margin: 0 0 4px; }
.topbar-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.topbar-actions button { width: auto; }

.banner {
  padding: 12px 16px;
  border-radius: 8px;
  margin-bottom: 16px;
}
.banner.error { background: rgba(231,76,60,.15); border: 1px solid var(--danger); }
.banner.ok { background: rgba(39,174,96,.15); border: 1px solid var(--ok); }

.table-wrap { overflow-x: auto; padding: 0; }
table { width: 100%; border-collapse: collapse; font-size: 0.92rem; }
th, td { padding: 12px 16px; text-align: left; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; }
tr:hover td { background: rgba(255,255,255,.02); }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  background: var(--border);
}
.badge.on { background: rgba(39,174,96,.25); color: #7dcea0; }
.badge.off { background: rgba(231,76,60,.25); color: #ff8a80; }

.group-tag {
  display: inline-block;
  margin: 2px 4px 2px 0;
  padding: 2px 8px;
  border-radius: 6px;
  background: rgba(0,130,201,.2);
  font-size: 0.78rem;
}

.row-actions { display: flex; gap: 6px; }

dialog {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  color: var(--text);
  padding: 0;
  max-width: 480px;
  width: 92vw;
}
dialog::backdrop { background: rgba(0,0,0,.6); }
dialog form { padding: 24px; }
dialog h2 { margin-top: 0; }
.dialog-actions { display: flex; gap: 8px; justify-content: flex-end; margin-top: 8px; }
.dialog-actions button { width: auto; min-width: 100px; }

code { background: var(--bg); padding: 2px 6px; border-radius: 4px; font-size: 0.85em; }