:root {
  --bg: #f4f7f6;
  --surface: #ffffff;
  --text: #1f2937;
  --muted: #6b7280;
  --line: #e5e7eb;
  --primary: #0d9488;
  --danger: #dc2626;
  --warning: #d97706;
  --ok: #15803d;
}

* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  color: var(--text);
  background: linear-gradient(180deg, #f8fafc 0%, #f4f7f6 40%, #eef2f7 100%);
}

.topbar {
  background: #0f172a;
  color: #f8fafc;
  border-bottom: 3px solid var(--primary);
}
.topbar-inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 12px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.brand {
  color: #f8fafc;
  text-decoration: none;
  font-weight: 700;
  letter-spacing: 0.2px;
}
.top-actions {
  display: flex;
  gap: 10px;
  align-items: center;
}

.container {
  max-width: 1400px;
  margin: 18px auto;
  padding: 0 16px 24px;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 14px;
  margin-bottom: 14px;
  box-shadow: 0 2px 10px rgba(15, 23, 42, 0.04);
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.card span { color: var(--muted); font-size: 0.85rem; }
.card strong { font-size: 1.3rem; }
.card.critical { border-color: #fecaca; background: #fff7f7; }
.card.high { border-color: #fed7aa; background: #fffbf5; }

.muted { color: var(--muted); }
.mono { font-family: "Consolas", "Menlo", monospace; font-size: 0.86rem; }

.btn {
  border: 1px solid var(--line);
  border-radius: 9px;
  padding: 8px 12px;
  background: #fff;
  color: var(--text);
  text-decoration: none;
  cursor: pointer;
}
.btn:hover { background: #f8fafc; }
.btn-primary {
  border-color: var(--primary);
  background: var(--primary);
  color: #fff;
}
.btn-primary:hover { filter: brightness(0.95); }

.flash-wrap { margin-bottom: 12px; }
.flash {
  border-radius: 9px;
  padding: 10px 12px;
  margin-bottom: 8px;
  border: 1px solid;
}
.flash.success { background: #f0fdf4; border-color: #bbf7d0; }
.flash.danger { background: #fef2f2; border-color: #fecaca; }

.badge {
  display: inline-block;
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: 0.3px;
}
.badge.low { background: #dcfce7; color: #166534; }
.badge.medium { background: #fef3c7; color: #92400e; }
.badge.high { background: #fed7aa; color: #9a3412; }
.badge.critical { background: #fecaca; color: #991b1b; }

.table-wrap {
  width: 100%;
  overflow-x: auto;
}
table {
  width: 100%;
  border-collapse: collapse;
  background: #fff;
}
th, td {
  text-align: left;
  padding: 9px 8px;
  border-bottom: 1px solid var(--line);
  font-size: 0.9rem;
  vertical-align: top;
}
thead th {
  position: sticky;
  top: 0;
  background: #f8fafc;
  z-index: 1;
}

.login-card {
  max-width: 480px;
  margin: 48px auto;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 12px;
  padding: 20px;
  box-shadow: 0 8px 30px rgba(15, 23, 42, 0.08);
}
.login-form {
  display: grid;
  gap: 8px;
}
input, select {
  border: 1px solid #d1d5db;
  border-radius: 8px;
  padding: 10px;
  font-size: 0.95rem;
}

.alert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 10px;
}
.alert-card {
  border: 1px solid var(--line);
  border-radius: 10px;
  padding: 10px;
  background: #fff;
}
.alert-card.critical { border-color: #fecaca; background: #fff7f7; }
.alert-card.high { border-color: #fed7aa; background: #fffbf5; }
.alert-card.medium { border-color: #fde68a; background: #fffbeb; }

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.inline-form { display: flex; align-items: center; gap: 8px; }
.text-low { color: #166534; }
.text-medium { color: #92400e; }
.text-high { color: #9a3412; }
.text-critical { color: #991b1b; }

@media (max-width: 960px) {
  .two-col { grid-template-columns: 1fr; }
}