* { box-sizing: border-box; margin: 0; padding: 0; }
    body { font-family: Arial, sans-serif; background: #f4f4f4; }

    /* Header */
    header {
      display: flex;
      justify-content: space-between;
      align-items: center;
      background: #333;
      color: #fff;
      padding: 12px 20px;
      position: fixed;
      width: 100%;
      top: 0;
      z-index: 200;
    }

    header h2 {
      font-size: 18px;
      white-space: nowrap;
      overflow: hidden;
      text-overflow: ellipsis;
    }

    .menu-btn {
      font-size: 24px;
      background: none;
      border: none;
      color: #fff;
      cursor: pointer;
    }

    /* Sidebar */
    .sidebar {
      position: fixed;
      top: 0; left: 0;
      width: 240px;
      height: 100%;
      background: #222;
      color: #fff;
      padding-top: 60px;
      transform: translateX(-100%);
      transition: transform 0.3s ease;
      overflow-y: auto;
      z-index: 100;
    }
    .sidebar.active { transform: translateX(0); }

    .sidebar ul { list-style: none; }
    .sidebar li {
      padding: 12px 20px;
      cursor: pointer;
      user-select: none;
      position: relative;
    }
    .sidebar li:hover { background: #333; }


    .arrow { float: right; transition: transform 0.3s; }
    .open > .arrow { transform: rotate(90deg); }

    .submenu {
      max-height: 0;
      overflow: hidden;
      background: #333;
      transition: max-height 0.3s ease;
    }
    
    .submenu li { padding-left: 40px; background: #222222; }

.sidebar ul li a {
  text-decoration: none;  /* underline hata deta hai */
  color: inherit;          /* text ka original color rakhta hai */
}
    .overlay {
      position: fixed;
      top: 0; left: 0; right: 0; bottom: 0;
      background: rgba(0,0,0,0.4);
      display: none;
      z-index: 50;
    }
    .overlay.active { display: block; }

    main {
      padding: 80px 20px 20px 20px;
      margin-left: 240px;
      transition: margin-left 0.3s ease;
    }

    .call-bar {
      position: sticky;
      bottom: 0;
      background: #28a745;
      color: #fff;
      text-align: center;
      padding: 12px 10px;
      font-size: 16px;
      font-weight: bold;
      display: flex;
      align-items: center;
      justify-content: center;
      gap: 8px;
      animation: blink 1.2s infinite;
      cursor: pointer;
    }
    .call-bar i { font-size: 18px; }

    @keyframes blink {
      0%, 100% { opacity: 1; }
      50% { opacity: 0.5; }
    }

    @media (max-width: 1024px) {
      header { padding: 10px 16px; }
      header h2 { font-size: 16px; }
      .menu-btn { font-size: 28px; }
    }

    @media (max-width: 768px) {
      main { margin-left: 0; }
      header { padding: 8px 12px; }
      header h2 { font-size: 16px; }
      .menu-btn { font-size: 28px; }
      .call-bar { font-size: 15px; padding: 10px; }
    }

    @media (max-width: 480px) {
      header { padding: 10px 10px; }
      header h2 { font-size: 18px; }
      .menu-btn { font-size: 28px; }
      .call-bar { font-size: 14px; gap: 6px; padding: 10px; }
      .call-bar i { font-size: 16px; }
    }