:root {
  --bg: #0f1115;
  --panel: #171a21;
  --panel-border: #262a35;
  --text: #e7e9ee;
  --muted: #8b92a3;
  --accent: #34d399;
  --accent-dark: #059669;
  --danger: #f87171;
  --radius: 10px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, sans-serif;
  font-size: 15px;
  line-height: 1.5;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

.topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
  border-bottom: 1px solid var(--panel-border);
  background: var(--panel);
}

.topbar .brand { font-weight: 700; font-size: 16px; }
.topbar .brand span { color: var(--accent); }

.topbar nav a {
  margin-left: 18px;
  color: var(--muted);
  font-size: 14px;
}
.topbar nav a:hover { color: var(--text); }

.container {
  max-width: 920px;
  margin: 0 auto;
  padding: 28px 20px 60px;
}

h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 16px; margin: 0 0 14px; color: var(--text); }
.subtitle { color: var(--muted); margin: 0 0 24px; font-size: 14px; }

.card {
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 20px;
}

.stats-row { display: flex; gap: 14px; margin-bottom: 20px; }
.stat-box {
  flex: 1;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
}
.stat-box .num { font-size: 26px; font-weight: 700; color: var(--accent); }
.stat-box .label { color: var(--muted); font-size: 13px; margin-top: 2px; }

table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
th, td { text-align: left; padding: 8px 6px; border-bottom: 1px solid var(--panel-border); }
th { color: var(--muted); font-weight: 600; font-size: 12.5px; text-transform: uppercase; letter-spacing: 0.03em; }
tr:last-child td { border-bottom: none; }

.badge {
  display: inline-block;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}
.badge.on { background: rgba(52,211,153,0.15); color: var(--accent); }
.badge.off { background: rgba(139,146,163,0.15); color: var(--muted); }
.badge.alert { background: rgba(52,211,153,0.18); color: var(--accent); }

input[type=text], input[type=number], input[type=password], textarea, select {
  width: 100%;
  background: #11141a;
  border: 1px solid var(--panel-border);
  color: var(--text);
  padding: 9px 10px;
  border-radius: 8px;
  font-size: 14px;
  margin-top: 4px;
}
input:focus, textarea:focus, select:focus { outline: none; border-color: var(--accent); }

label { font-size: 13px; color: var(--muted); display: block; margin-top: 12px; }

.form-row { display: flex; gap: 12px; }
.form-row > div { flex: 1; }

button, .btn {
  background: var(--accent);
  color: #06281c;
  border: none;
  padding: 9px 16px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 14px;
  cursor: pointer;
}
button:hover, .btn:hover { background: var(--accent-dark); color: white; }

button.secondary, .btn.secondary {
  background: transparent;
  border: 1px solid var(--panel-border);
  color: var(--text);
}
button.secondary:hover, .btn.secondary:hover { border-color: var(--muted); background: transparent; }

button.danger { background: transparent; color: var(--danger); border: 1px solid rgba(248,113,113,0.3); }
button.danger:hover { background: rgba(248,113,113,0.1); color: var(--danger); }

.inline-form { display: inline; }

.flash {
  padding: 10px 14px;
  border-radius: 8px;
  margin-bottom: 16px;
  font-size: 14px;
}
.flash.success { background: rgba(52,211,153,0.12); color: var(--accent); }
.flash.error { background: rgba(248,113,113,0.12); color: var(--danger); }

.scan-bar { display: flex; align-items: center; gap: 14px; }
.scan-status-text { color: var(--muted); font-size: 13.5px; }

.login-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}
.login-card { width: 320px; }