:root {
    --primary: #0d1b2a;
    --secondary: #1b263b;
    --accent: #ffb703;
    --text: #e0e1dd;
    --highlight: #a8dadc;
    --neon-blue: #4cc9f0;
    --neon-purple: #7209b7;
  }

  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  body {
    font-family: 'Montserrat', 'Segoe UI', sans-serif;
    line-height: 1.6;
    color: var(--text);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    background-size: 400% 400%;
    animation: gradientAnimation 15s ease infinite;
    min-height: 100%;
    overflow-x: hidden;
  }

  @keyframes gradientAnimation {
    0% { background-position: 0% 50%; }
    50% { background-position: 100% 50%; }
    100% { background-position: 0% 50%; }
  }

  .stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: transparent;
    z-index: -1;
    pointer-events: none;
  }

  .nebula {
    position: fixed;
    top: 0;
    left: 0;
    width: 200%;
    height: 100%;
    background: radial-gradient(circle, rgba(114,9,183,0.3) 0%, transparent 70%);
    z-index: -1;
    animation: moveNebula 120s linear infinite;
    pointer-events: none;
  }

  @keyframes moveNebula {
    from { transform: translateX(0); }
    to { transform: translateX(-50%); }
  }

  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 100px 20px;
    position: relative;
  }

  header {
    text-align: center;
    margin-bottom: 60px;
    position: relative;
  }

  h1, h2, h3, h4 {
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
  }

  h1 {
    font-size: 3rem;
    background: linear-gradient(90deg, var(--highlight), var(--neon-blue));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 1rem;
  }

  h2 {
    font-size: 2.2rem;
    color: var(--highlight);
    border-left: 4px solid var(--accent);
    padding-left: 15px;
    margin: 40px 0 20px;
  }

  h3 {
    font-size: 1.8rem;
    color: var(--neon-blue);
    margin: 30px 0 15px;
  }

  p {
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    color: rgba(224,225,221,0.9);
  }

  strong {
    color: var(--highlight);
    font-weight: 600;
  }

  span {
    color: var(--accent);
  }

  .reference-banner {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: rgba(13,27,42,0.9);
    padding: 10px 20px;
    border-radius: 30px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.3);
    z-index: 1000;
    font-size: 0.9rem;
    backdrop-filter: blur(5px);
    border: 1px solid rgba(168,218,220,0.2);
  }

  .card {
    background: rgba(255,255,255,0.05);
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.3);
    backdrop-filter: blur(10px);
    padding: 30px;
    margin: 30px 0;
    border: 1px solid rgba(168,218,220,0.1);
    transition: transform 0.4s ease, box-shadow 0.4s ease;
  }

  .card:hover {
    transform: translateY(-10px);
    box-shadow: 0 12px 40px rgba(0,0,0,0.4);
    border-color: rgba(168,218,220,0.3);
  }

  pre {
    background: rgba(13,27,42,0.7);
    border-radius: 10px;
    padding: 20px;
    margin: 20px 0;
    overflow: auto;
    border-left: 4px solid var(--neon-purple);
    font-family: 'Courier New', monospace;
    font-size: 0.95rem;
    line-height: 1.5;
    position: relative;
  }

  code {
    color: var(--highlight);
    font-family: 'Courier New', monospace;
  }

  .image-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 20px;
    margin: 40px 0;
  }

  .tech-image {
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 8px 20px rgba(0,0,0,0.3);
    transition: transform 0.3s ease;
    aspect-ratio: 1/1;
    background-size: cover;
    background-position: center;
  }

  .tech-image:hover {
    transform: scale(1.03);
    box-shadow: 0 12px 25px rgba(0,0,0,0.4);
  }

  .navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(13,27,42,0.9);
    display: flex;
    justify-content: center;
    padding: 20px 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(168,218,220,0.1);
  }

  .nav-links {
    display: flex;
    gap: 30px;
  }

  .nav-links a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    font-size: 1rem;
    transition: all 0.3s ease;
    position: relative;
    padding: 5px 0;
  }

  .nav-links a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s ease;
  }

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

  .nav-links a:hover::after {
    width: 100%;
  }

  .section-divider {
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(168,218,220,0.3), transparent);
    margin: 60px 0;
  }

  @media (max-width: 768px) {
    h1 { font-size: 2.2rem; }
    h2 { font-size: 1.8rem; }
    h3 { font-size: 1.5rem; }
    .container { padding: 80px 15px; }
    .nav-links { gap: 15px; }
    .image-grid { grid-template-columns: 1fr; }
  }

  @media (max-width: 480px) {
    h1 { font-size: 1.8rem; }
    h2 { font-size: 1.5rem; }
    .container { padding: 70px 10px; }
    .nav-links { gap: 10px; font-size: 0.9rem; }
  }