body {
          font-family: 'Roboto', sans-serif;
          background-color: #f5f6f5;
          scroll-behavior: smooth;
          color: #333;
      }

      /* Sticky Header */
      .header {
          position: sticky;
          top: 0;
          background: linear-gradient(180deg, #FFFFFF, #f8f9fa);
          border-bottom: 1px solid rgb(25, 118, 210);
          padding: 10px 20px;
          z-index: 1000;
          box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
          display: flex;
          align-items: center;
          justify-content: space-between;
          flex-wrap: wrap;
      }

      .header .logo-title {
          display: flex;
          align-items: center;
      }

      .header .logo-title img {
          width: 80px;
          height: 60px;
          margin-right: 10px;
      }

      .header .logo-title h4 {
          color: rgb(25, 118, 210);
          /* Primary color */
          font-weight: 500;
          font-size: 1.2rem;
          margin: 0;
      }

      .header .search-bar {
          max-width: 500px;
          width: 300px;
          flex-shrink: 0;
      }

      .header .search-bar input {
          border-radius: 20px;
          border: 1px solid rgb(25, 118, 210);
          padding: 8px 15px;
          width: 100%;
          font-size: 0.9rem;
      }

      @media (max-width: 768px) {
          .header {
              flex-direction: column;
              align-items: flex-start;
          }

          .header .logo-title {
              margin-bottom: 10px;
          }

          .header .search-bar {
              max-width: 100%;
              width: 100%;
          }
      }

      /* Sidebar */
      .sidebar {
          min-height: 100vh;
          background-color: rgb(25, 118, 210);
          /* Primary color */
          position: fixed;
          width: 20%;
          overflow-y: auto;
          z-index: 999;
      }

      .sidebar-menu {
          padding: 20px;
      }

      .sidebar a {
          color: #FFFFFF;
          padding: 10px 15px;
          display: block;
          text-decoration: none;
          font-size: 0.95rem;
          border-radius: 5px;
          margin-bottom: 5px;
      }

      .sidebar a:hover {
          background-color: #FFFFFF;
          /* Secondary color */
          color: rgb(25, 118, 210);
          /* Primary color */
      }

      .sidebar a i {
          margin-right: 8px;
      }

      /* Content */
      .content {
          margin-left: 20%;
          width: 75%;
          padding: 30px;
          background-color: #f5f6f5;
      }

      @media (max-width: 768px) {
          .sidebar {
              width: 100%;
              position: relative;
              min-height: auto;
          }

          .content {
              margin-left: 0;
              width: 100%;
          }
      }

      .section-title {
          color: rgb(25, 118, 210);
          /* Primary color */
          font-weight: 500;
          margin-top: 40px;
          margin-bottom: 20px;
          font-size: 1.75rem;
      }

      .card {
          margin-bottom: 30px;
          border: 1px solid rgb(25, 118, 210);
          /* Primary color */
          border-radius: 8px;
          box-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
          background-color: #FFFFFF;
          /* Secondary color */
      }

      .card-header {
          background: rgb(25, 118, 210);
          /* Primary color */
          color: #00BFFF;
          /* Accent color */
          font-size: 1.2rem;
          font-weight: 500;
          border-bottom: none;
          padding: 15px 20px;
          border-radius: 8px 8px 0 0;
      }

      .card-body {
          padding: 20px;
          font-size: 0.95rem;
          line-height: 1.6;
      }

      .card-body h5 {
          font-size: 1.1rem;
          color: #333;
          margin-top: 20px;
          margin-bottom: 10px;
      }

      .navbar {
          background-color: rgb(25, 118, 210);
          /* Primary color */
      }

      .navbar-brand {
          color: #00BFFF !important;
          /* Accent color */
          font-weight: 500;
      }

      .btn-primary {
          background-color: rgb(25, 118, 210);
          /* Primary color */
          border-color: rgb(25, 118, 210);
          color: #00BFFF;
          /* Accent color */
          font-weight: 500;
          border-radius: 5px;
          padding: 8px 16px;
      }

      .btn-primary:hover {
          background-color: #FFFFFF;
          /* Secondary color */
          border-color: rgb(25, 118, 210);
          color: rgb(25, 118, 210);
          /* Primary color */
      }

      .back-to-top {
          position: fixed;
          bottom: 30px;
          right: 30px;
          display: none;
          z-index: 1000;
      }

      .back-to-top.show {
          display: block;
      }

      a {
          color: #00BFFF;
          /* Accent color */
          text-decoration: none;
      }

      a:hover {
          text-decoration: underline;
      }

      /* Search Highlight */
      .search-highlight {
          background-color: rgba(0, 191, 255, 0.3);
          padding: 2px 4px;
          border-radius: 3px;
      }