/* Ensure the page takes full height for sticky footer */
html {
    height: 100%;
  }
  
  body {
    min-height: 100%;
    display: flex;
    flex-direction: column;
    font-family: 'Roboto', sans-serif;
    line-height: 1.6;
    background-color: #0d1b2a; /* Deep blue night background */
    color: #e0e0e0;
    padding-bottom: 2rem;
  }
  
  /* Container */
  .container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 0;
  }
  
  /* Header */
  header {
    background-color: #1b263b;
    padding: 2rem 0;
    text-align: center;
    border-bottom: 2px solid #415a77;
    position: relative; /* Needed for burger positioning */
  }
  
  .header-container .avatar {
    width: 150px;
    height: 150px;
    border-radius: 50%;
    object-fit: cover;
    margin-bottom: 1rem;
    border: 3px solid #415a77;
  }
  
  .site-title {
    font-size: 2.8rem;
    margin-bottom: 0.5rem;
  }
  
  .site-tagline {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: #a0a0a0;
  }
  
  /* Navigation */
  .nav-menu {
    list-style: none;
    display: flex;
    justify-content: center;
    gap: 1.5rem;
    margin-top: 1rem;
  }
  
  /* Disable default link styling */
  a {
    text-decoration: none;
    color: inherit;
    transition: none;
  }
  
  /* Main Content */
  main {
    flex: 1;  /* Ensures main takes available space, pushing footer down */
    padding: 3rem 0;
  }
  
  /* Sections */
  section {
    margin-bottom: 3rem;
  }
  
  section h2 {
    font-size: 2.4rem;
    margin-bottom: 1rem;
    border-left: 4px solid #415a77;
    padding-left: 0.75rem;
  }
  
  /* Paragraphs */
  p {
    margin-bottom: 1.5rem;
    font-size: 1.1rem;
    line-height: 1.8;
  }
  
  /* Social Links */
  .social-links {
    margin-top: 1rem;
  }
  
  .social-links a {
    display: inline-block;
    margin-right: 1.5rem;
    font-weight: bold;
  }
  
  /* About Sections (for About page) */
  .about-sections {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-top: 1.5rem;
  }
  .about-section {
    flex: 1;
    min-width: 280px;
    background-color: rgba(255, 255, 255, 0.05);
    padding: 1.5rem;
    border-radius: 8px;
  }
  .about-section h3 {
    font-size: 1.8rem;
    margin-bottom: 0.75rem;
  }
  
  /* Timeline for Blockchain Page */
  .timeline {
    margin-top: 2rem;
    border-left: 2px solid #415a77;
    padding-left: 1.5rem;
  }
  .timeline-item {
    margin-bottom: 2rem;
  }
  .timeline-item h3 {
    font-size: 1.8rem;
    margin-bottom: 0.5rem;
  }
  .timeline-item p {
    font-size: 1rem;
    line-height: 1.6;
  }
  
  /* Project Cards */
  .project-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
  }
  .project-card {
    background-color: rgba(255, 255, 255, 0.05);
    padding: 1.5rem;
    border-radius: 8px;
    transition: transform 0.3s;
  }
  .project-card:hover {
    transform: translateY(-5px);
  }
  .project-card h3 {
    margin-bottom: 0.75rem;
    font-size: 1.8rem;
  }
  .project-card p {
    font-size: 1rem;
  }
  
  /* Article Cards */
  .article-card {
    background-color: rgba(255, 255, 255, 0.05);
    padding: 1rem;
    border-radius: 8px;
    margin-bottom: 1rem;
  }
  .article-card h3 {
    margin-bottom: 0.5rem;
    font-size: 1.6rem;
  }
  .article-date {
    font-size: 0.9rem;
    color: #a0a0a0;
  }
  
  /* Footer - Sticky Footer Styles */
  footer {
    background-color: #1b263b;
    text-align: center;
    padding: 1.5rem 0;
    font-size: 0.9rem;
    border-top: 2px solid #415a77;
  }
  
  /* Burger Menu for Phone Screens */
  .burger {
    display: none;
    cursor: pointer;
    position: absolute;
    top: 1rem;
    right: 1rem;
  }
  .burger span {
    display: block;
    width: 25px;
    height: 3px;
    margin: 5px;
    background: #e0e0e0;
    transition: all 0.3s;
  }
  
  /* Responsive Design */
  @media (max-width: 768px) {
    /* Make nav menu hidden initially and use burger */
    .nav-menu {
      display: none;
      flex-direction: column;
      background-color: #1b263b;
      width: 100%;
      text-align: center;
      position: absolute;
      top: 70px; /* Adjust based on header height */
      left: 0;
      z-index: 10;
      padding: 1rem 0;
    }
    .nav-menu.active {
      display: flex;
    }
    .burger {
      display: block;
    }
    
    /* Adjust navigation links spacing on mobile */
    .nav-menu li {
      margin: 1rem 0;
    }
    
    .site-title {
      font-size: 2.2rem;
    }
    
    .header-container .avatar {
      width: 120px;
      height: 120px;
    }
  }