/* Reset */
* {
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  margin: 0;
  background-color: #f2f4f7;
}

/* LEFT SIDE MENU */
.sidebar {
  position: fixed;
  left: 0;
  top: 0;
  width: 220px;
  height: 100vh;
  background-color: #5a1e76; /* UNIQUE background color */
  color: white;
  padding-top: 20px;
}

.sidebar h2 {
  text-align: center;
  font-size: 18px;
  margin-bottom: 20px;
}

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

.sidebar a:hover {
  background-color: #7a2fa3;
}

/* HEADER */
header {
  background-color: #003366;
  color: white;
  padding: 20px;
  text-align: center;
  margin-left: 220px;
}

/* MAIN CONTENT */
.container {
  margin-left: 220px;
  padding: 20px;
}

.chart-container,
.category {
  background: white;
  padding: 20px;
  margin-bottom: 30px;
  border-radius: 10px;
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

canvas {
  max-width: 100%;
  height: 400px;
}

h2 {
  color: #003366;
}

/* MOBILE RESPONSIVE */
@media (max-width: 768px) {
  .sidebar {
    position: relative;
    width: 100%;
    height: auto;
    display: flex;
    justify-content: space-around;
  }

  .sidebar h2 {
    display: none;
  }

  .sidebar a {
    padding: 15px;
    text-align: center;
  }

  header,
  .container {
    margin-left: 0;
  }

  canvas {
    height: 300px;
  }
}