:root {
  --color-bg: #f5f6f8;
  --color-surface: #ffffff;
  --color-border: #dde1e6;
  --color-text: #1f2430;
  --color-muted: #6b7280;
  --color-primary: #2454ff;
  --color-primary-hover: #173bcf;
  --color-critical: #d1293d;
  --color-warning: #b8860b;
  --color-good: #1a7f37;
  --radius: 8px;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  font-family: -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 14px;
}

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

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 10px 24px;
}

.topbar .brand { font-weight: 700; font-size: 16px; }
.topbar nav a { margin-right: 16px; color: var(--color-text); }
.topbar nav a.active { color: var(--color-primary); font-weight: 600; }

.container { max-width: 1180px; margin: 0 auto; padding: 24px; }

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px;
  margin-bottom: 16px;
}

h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 17px; margin: 0 0 12px; }
h3 { font-size: 14px; margin: 0 0 8px; color: var(--color-muted); text-transform: uppercase; letter-spacing: .04em; }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--color-border); font-size: 13px; }
th { color: var(--color-muted); font-weight: 600; }
tr:hover td { background: #fafbfc; }

.btn {
  display: inline-block;
  padding: 7px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  font-size: 13px;
}
.btn:hover { border-color: var(--color-primary); text-decoration: none; }
.btn-primary { background: var(--color-primary); color: #fff; border-color: var(--color-primary); }
.btn-primary:hover { background: var(--color-primary-hover); }
.btn-small { padding: 3px 8px; font-size: 12px; }

.form-row { margin-bottom: 14px; }
.form-row label { display: block; font-weight: 600; margin-bottom: 4px; font-size: 13px; }
.form-row .hint { color: var(--color-muted); font-size: 12px; margin-top: 3px; }
input[type=text], input[type=email], input[type=password], input[type=number], input[type=date],
select, textarea {
  width: 100%; padding: 7px 9px; border: 1px solid var(--color-border); border-radius: var(--radius);
  font-size: 13px; font-family: inherit; background: #fff;
}
textarea { min-height: 70px; }

.grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 0 16px; }
.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }

.badge {
  display: inline-block; padding: 2px 8px; border-radius: 999px; font-size: 12px; font-weight: 600;
  background: #eef1f6; color: var(--color-text);
}
.badge-critical { background: #fde8e8; color: var(--color-critical); }
.badge-warning { background: #fdf3d8; color: var(--color-warning); }
.badge-good { background: #e3f5e6; color: var(--color-good); }

.stat-row { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; margin-bottom: 20px; }
.stat-tile { background: var(--color-surface); border: 1px solid var(--color-border); border-radius: var(--radius); padding: 14px; border-left: 3px solid transparent; }
.stat-tile .value { font-size: 26px; font-weight: 700; }
.stat-tile .label { color: var(--color-muted); font-size: 12px; }
.stat-tile-good { border-left-color: var(--color-good); }
.stat-tile-good .value { color: var(--color-good); }
.stat-tile-warning { border-left-color: var(--color-warning); }
.stat-tile-warning .value { color: var(--color-warning); }
.stat-tile-critical { border-left-color: var(--color-critical); }
.stat-tile-critical .value { color: var(--color-critical); }

.tabs { display: flex; gap: 4px; margin-bottom: 16px; border-bottom: 1px solid var(--color-border); }
.tabs a { padding: 8px 14px; border-bottom: 2px solid transparent; color: var(--color-text); }
.tabs a.active { border-color: var(--color-primary); color: var(--color-primary); font-weight: 600; }

.flash { padding: 10px 14px; border-radius: var(--radius); margin-bottom: 16px; background: #e3f5e6; color: var(--color-good); }
.flash.error { background: #fde8e8; color: var(--color-critical); }

.progress-bar { background: #eef1f6; border-radius: 999px; height: 8px; overflow: hidden; }
.progress-bar .fill { height: 100%; background: var(--color-primary); }
.progress-bar .fill.fill-good { background: var(--color-good); }
.progress-bar .fill.fill-warning { background: var(--color-warning); }
.progress-bar .fill.fill-critical { background: var(--color-critical); }

.percent-cell { display: flex; align-items: center; gap: 8px; min-width: 120px; }
.percent-cell .progress-bar { flex: 1; }
.percent-cell .percent-value { font-size: 12px; font-weight: 600; white-space: nowrap; }

.login-wrap { max-width: 360px; margin: 80px auto; }
.muted { color: var(--color-muted); }
.text-right { text-align: right; }
.mt-0 { margin-top: 0; }
.actions-row { display: flex; gap: 8px; margin-top: 16px; }