:root {
  --bg: #0f172a;
  --panel: #1e293b;
  --panel-2: #273449;
  --text: #e2e8f0;
  --muted: #94a3b8;
  --accent: #38bdf8;
  --accent-2: #34d399;
  --danger: #f87171;
  --warning: #fbbf24;
  --border: #334155;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 24px 20px 60px;
}

.topnav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 14px 24px;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.topnav-left, .topnav-right { display: flex; align-items: center; gap: 18px; }
.brand { font-weight: 700; color: var(--text); }
.user-badge { color: var(--muted); font-size: 0.9em; }

.flash-list { margin-bottom: 20px; }
.flash { padding: 10px 14px; border-radius: 6px; margin-bottom: 8px; font-size: 0.9em; }
.flash-success { background: rgba(52, 211, 153, 0.15); border: 1px solid var(--accent-2); color: var(--accent-2); }
.flash-danger { background: rgba(248, 113, 113, 0.15); border: 1px solid var(--danger); color: var(--danger); }
.flash-warning { background: rgba(251, 191, 36, 0.15); border: 1px solid var(--warning); color: var(--warning); }

h1, h2, h3 { font-weight: 600; }

.card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 20px;
  margin-bottom: 20px;
}

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--border); font-size: 0.92em; }
th { color: var(--muted); font-weight: 600; text-transform: uppercase; font-size: 0.75em; letter-spacing: 0.03em; }
tr:hover td { background: var(--panel-2); }

.badge { display: inline-block; padding: 2px 10px; border-radius: 999px; font-size: 0.75em; font-weight: 600; }
.badge-ok { background: rgba(52, 211, 153, 0.15); color: var(--accent-2); }
.badge-fail { background: rgba(248, 113, 113, 0.15); color: var(--danger); }
.badge-off { background: rgba(148, 163, 184, 0.15); color: var(--muted); }

.btn {
  display: inline-block;
  padding: 8px 16px;
  border-radius: 6px;
  border: 1px solid var(--accent);
  color: var(--accent);
  background: transparent;
  cursor: pointer;
  font-size: 0.9em;
}
.btn:hover { background: rgba(56, 189, 248, 0.1); text-decoration: none; }
.btn-primary { background: var(--accent); color: #0f172a; font-weight: 600; }
.btn-primary:hover { background: #0ea5e9; }
.btn-danger { border-color: var(--danger); color: var(--danger); }
.btn-danger:hover { background: rgba(248, 113, 113, 0.1); }
.btn-sm { padding: 4px 10px; font-size: 0.8em; }

.form-group { margin-bottom: 16px; }
label { display: block; margin-bottom: 6px; color: var(--muted); font-size: 0.9em; }
input[type=text], input[type=password], input[type=number], input[type=email], select, textarea {
  width: 100%;
  padding: 9px 12px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: var(--panel-2);
  color: var(--text);
  font-size: 0.95em;
}
input[type=checkbox] { margin-right: 8px; }
.checkbox-row { display: flex; align-items: center; }

.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 16px; }
.metric-panel { background: var(--panel-2); border: 1px solid var(--border); border-radius: 8px; padding: 14px; }
.metric-panel h4 { margin: 0 0 8px; font-size: 0.95em; }
.metric-stats { display: flex; gap: 16px; font-size: 0.85em; color: var(--muted); margin-bottom: 8px; }
.metric-stats b { color: var(--text); }
canvas { max-width: 100%; }

.section-title { display: flex; justify-content: space-between; align-items: center; margin-bottom: 12px; }
.muted { color: var(--muted); }
.login-wrap { max-width: 380px; margin: 80px auto; }