body {
  background-color: #f4f6f9;
  font-size: 14px;
}

.sidebar {
  width: 240px;
  min-height: 100vh;
  background: #1f2937;
  color: #fff;
  position: fixed;
}

.sidebar h5 {
  padding: 20px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.sidebar a {
  display: block;
  padding: 12px 20px;
  color: #cbd5e1;
  text-decoration: none;
}

.sidebar a:hover,
.sidebar a.active {
  background: #111827;
  color: #fff;
}

.main {
  margin-left: 240px;
  padding: 25px;
}

.header {
  background: #fff;
  padding: 15px 25px;
  border-radius: 8px;
  margin-bottom: 25px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
}

.card {
  border: 0;
  border-radius: 12px;
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
}