* { margin: 0; padding: 0; box-sizing: border-box; }
    body { font-family: Arial, sans-serif; }

    /* Header */
    header {
      background: #333;
      padding: 2px;
      display: flex;
      align-items: center;
      justify-content: space-between;
      border-bottom: 1px solid #ccc;
      position: sticky;
      top: 0;
      z-index: 1000;
      overflow-x: auto;
    }
    .logo {
      font-size: 30px;
      font-weight: bold;
      color:blue;
    }
    .menu {
      display: flex;
      align-items: center;
      gap: 1rem;
      flex-wrap:nowrap;
    }
    .menu a {
      text-decoration: none;
      color: black;
      padding: 0.3rem 0.6rem;
      font-size: 14px;
      transition: background 0.3s, color 0.3s;
    }
    .menu a:hover {
      background: #04aa6d;
      color: white;
      border-radius: 4px;
    }

    .search-box {
      display: flex;
      align-items: center;
      background: #f1f1f1;
      border-radius: 50px;
      padding: 0.3rem 0.6rem;
      transition: box-shadow 0.3s;
    }
    .search-box input {
      border: none;
      background: transparent;
      outline: none;
      padding: 0.3rem;
      width: 60px;
    }
    .search-box:focus-within {
      box-shadow: 0 0 5px #04aa6d;
    }

    /* Topbar */
    .topbar {
      background: #555;
      display: flex;
      flex-wrap: nowrap;
      align-items: center;
      padding: 0.5rem ;
      gap: 1rem;
      overflow-x: auto;
    }

    .topbar .hamburger {
      color: white;
      font-size: 1.2rem;
      cursor: pointer;
      margin-right: 1rem;
    }

    .topbar a {
      color: white;
      text-decoration: none;
      font-size: 0.95rem;
      padding: 3px 3px;
      transition: background 0.3s, color 0.3s;
    }
    .topbar a:hover {
      background: #04aa6d;
      color: #fff;
      border-radius: 5px;
    }

    /* Layout */
    .container {
      display: flex;
    }

    /* Sidebar */
    .sidebar {
      width: 250px;
      background: #666;
      padding: 1rem;
      min-height: 100vh;
      border-right: 1px solid #ccc;
      transition: transform 0.3s ease;
    }
    .sidebar h3 {
      margin-bottom: 1rem;
    }
    .sidebar a {
      display: block;
      margin-bottom: 0.5rem;
      text-decoration: none;
      color: white;
      padding: 0.5rem;
      border-radius: 4px;
      transition: background 0.3s, color 0.3s;
    }
    .sidebar a:hover {
      background-color: green;
      color: white;
    }
    .sidebar a.active {
      background-color: #04aa6d;
      color: white;
      font-weight: bold;
    }

    /* Main content */
    .content {
      flex: 1;
      padding: 2rem;
    }
    .card {
      background: #dff0e0;
      padding: 1rem;
      border-left: 5px solid #04aa6d;
      margin: 1rem 0;
    }
    .btn {
      display: inline-block;
      margin-top: 10px;
      padding: 10px 15px;
      background: #04aa6d;
      color: white;
      border-radius: 4px;
      text-decoration: none;
      transition: background 0.3s ease;
    }
    .btn:hover {
      background: #038f5a;
    }

    /* Responsive */
    @media screen and (max-width: 768px) {
      .sidebar {
        position: fixed;
        top: 110px; /* below header + topbar */
        left: 0;
        height: 100%;
        width: 220px;
        background: #f1f1f1;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 999;
      }
      .sidebar.open {
        transform: translateX(0);
      }
      .container {
        flex-direction: column;
      }
      
    }
    /* Highlight active sidebar link */
    .sidebar a.active {
      background-color: #04aa6d;
      color: white;
      font-weight: bold;
    }