/* Reset & General Styles */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }

  :root {
    --page-bg-color: #f0f4ff; /* Very light blue */
    --text-color: #333;
    --nav-bg-color: rgba(255, 255, 255, 0.8); /* Slightly transparent white */
    --nav-link-color: #555;
    --nav-link-hover: #e6e6ff; /* Light purple */
    --tile-bg-color: #ffffff;
    --tile-title-color: #222;
    --tile-text-color: #555;
    --footer-text-color: #777;
    --footer-border-color: #ddd;
    --tile-shadow: 0 4px 8px rgba(0, 0, 0, 0.05); /* Softer shadow */
    --tile-hover-shadow: 0 6px 12px rgba(0, 0, 0, 0.08);
  }

  body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    color: var(--text-color);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    background: linear-gradient(to bottom, #f0f4ff, #e6f7ff);
  }

  /* Navigation */
  nav {
    background: var(--nav-bg-color);
    backdrop-filter: blur(10px);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    border-bottom: 1px solid var(--footer-border-color);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.02);
    position: relative; /* Needed for absolute positioning of mobile menu */
  }

  nav strong {
    font-size: 1.25rem;
    font-weight: 600;
    margin-right: 15px;
  }

  .nav-links {
    display: flex;
    gap: 15px;
    list-style: none;
    padding-left: 0;
    margin: 0;
  }

  .nav-links a {
    color: var(--nav-link-color);
    text-decoration: none;
    font-size: 0.9rem;
    font-weight: 500;
    padding: 8px 12px;
    border-radius: 5px;
    transition: background-color 0.15s ease;
    white-space: nowrap;
  }

  .nav-links a:hover {
    background-color: var(--nav-link-hover);
  }

  /* Hamburger Icon - Hidden by default (on desktop) */
  .hamburger {
    display: none; /* Hidden on larger screens */
    background: none;
    border: none;
    cursor: pointer;
    padding: 5px; /* Clickable area */
    z-index: 1001; /* Ensure it's above other nav content */
  }

  .hamburger-line {
    display: block;
    width: 25px;
    height: 3px;
    background-color: var(--text-color);
    margin: 5px 0;
    border-radius: 3px;
    transition: transform 0.3s ease, opacity 0.3s ease; /* For potential animation */
  }

  /* --- Sections, Tiles, Footer, Hero (Keep existing styles) --- */
  /* ... (Paste your existing styles for .section, .tile-grid, .tile, footer, etc. here) ... */
  .section {
    padding: 40px 20px;
  }

  .section h3 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--text-color);
    margin-bottom: 20px;
    padding-bottom: 10px;
  }

  .tile-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-bottom: 30px;
    padding-bottom: 20px;
    border-bottom: 2px solid var(--footer-border-color);
  }

  .tile {
    background-color: var(--tile-bg-color);
    border-radius: 10px;
    box-shadow: var(--tile-shadow);
    padding: 20px;
    transition: box-shadow 0.15s ease;
  }

  .tile:hover {
    box-shadow: var(--tile-hover-shadow);
  }

  .tile h4 {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--tile-title-color);
    margin-bottom: 10px;
  }

  .tile p {
    font-size: 1rem;
    color: var(--tile-text-color);
  }

  footer {
    text-align: center;
    padding: 20px;
    font-size: 0.85rem;
    color: var(--footer-text-color);
    border-top: 1px solid var(--footer-border-color);
    margin-top: 40px;
  }

  .section-single-tile .tile-grid {
    display: block;
  }

  .section-single-tile .tile {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    padding: 30px;
    border-radius: 10px;
  }

  .section-single-tile .tile h4 {
    font-size: 2.2rem;
    font-weight: 600;
    margin-bottom: 15px;
  }

  .section-single-tile .tile p {
    font-size: 1.2rem;
  }

  #hero {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    height: 100%;
    text-align: center;
    background-color: #e6f7ff;
    color: #333;
  }

  #hero-image {
    max-width: 80%;
    max-height: 60%;
    height: auto;
    border-radius: 10px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    margin-bottom: 20px;
    object-fit: contain;
  }

  #hero-text h1 {
    font-size: 3.0rem;
    font-weight: 700;
    margin-bottom: 10px;
  }

  #hero-text p {
    font-size: 1.2rem;
    line-height: 1.6;
  }
  /* --- End of Existing Styles --- */

  /* --- RESPONSIVE MENU STYLES --- */
  @media (max-width: 900px) {
    .hamburger {
        display: block; /* Show hamburger on small screens */
    }

    .nav-links {
        display: none; /* Hide nav links by default on mobile */
        flex-direction: column;
        position: absolute; /* Position relative to nav */
        top: 100%; /* Position below the nav bar */
        left: 0;
        width: 100%;
        background-color: #ffffff;
        backdrop-filter: blur(10px);
        box-shadow: 0 4px 8px rgba(0,0,0,0.1);
        padding: 10px 0; /* Add some padding */
        border-top: 1px solid var(--footer-border-color); /* Separator */
        z-index: 1000;
    }

    .nav-links.active {
        display: flex; /* Show nav links when active */
    }

    .nav-links a {
        padding: 12px 20px; /* Full width clickable area */
        width: 100%;
        text-align: left;
        border-radius: 0; /* Remove radius for full-width items */
        border-bottom: 1px solid var(--footer-border-color); /* Separator lines */
    }
    .nav-links a:last-child {
        border-bottom: none; /* Remove border from last item */
    }

    .nav-links a:hover {
        background-color: var(--nav-link-hover);
    }
  }