body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #0f172a;
  color: #e5e7eb;
}

#login {
  max-width: 400px;
  margin: 120px auto;
  padding: 30px;
  background: #020617;
  border-radius: 12px;
  text-align: center;
}

#login input {
  width: 100%;
  padding: 12px;
  margin-top: 10px;
  border-radius: 8px;
  border: none;
}

#login button {
  width: 100%;
  padding: 12px;
  margin-top: 15px;
  border: none;
  border-radius: 8px;
  background: #2563eb;
  color: white;
  font-size: 16px;
  cursor: pointer;
}

#loginError {
  color: #f87171;
  margin-top: 10px;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 15px 30px;
  background: #020617;
}

header button {
  background: #334155;
  color: white;
  border: none;
  padding: 8px 14px;
  border-radius: 8px;
  cursor: pointer;
}

.instance {
  padding: 20px 30px;
}

.instance h2 {
  margin-bottom: 15px;
}

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 15px;
}

.tile {
  background: #020617;
  padding: 16px;
  border-radius: 12px;
  border-left: 5px solid #22c55e;
}

.tile.CRITICAL {
  border-left-color: #ef4444;
}

.tile-header {
  font-size: 14px;
  opacity: 0.8;
}

.tile-value {
  font-size: 28px;
  margin-top: 8px;
}

.tile i {
  float: right;
  opacity: 0.4;
}

footer {
  text-align: center;
  padding: 15px;
  opacity: 0.6;
}