:root {
    --primary: #0d47a1;
    --secondary: #1976d2;
    --accent: #42a5f5;
    --text: #ffffff;
    --bg-dark: #121a2b;
    --bg-light: rgba(255, 255, 255, 0.1);
    --border-radius: 8px;
    --shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    --transition: all 0.3s ease;
  }

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

  body {
    background: linear-gradient(135deg, var(--bg-dark), var(--primary));
    font-family: 'Roboto', sans-serif;
    color: var(--text);
    line-height: 1.6;
    min-height: 100%;
    overflow-x: hidden;
    padding-top: 70px;
  }

  @keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-10px); }
  }

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

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

  .tech-notice {
    position: fixed;
    bottom: 20px;
    right: 20px;
    background: rgba(0,0,0,0.7);
    padding: 10px 15px;
    border-radius: var(--border-radius);
    z-index: 1000;
    font-size: 0.8em;
    animation: pulse 3s infinite;
  }

  .navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(13, 71, 161, 0.9);
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 15px 5%;
    z-index: 1000;
    backdrop-filter: blur(5px);
    box-shadow: var(--shadow);
  }

  .navbar .logo {
    font-size: 1.5em;
    font-weight: bold;
    background: linear-gradient(to right, var(--accent), #ffffff);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }

  .navbar .menu {
    display: flex;
    gap: 25px;
  }

  .navbar .menu a {
    color: var(--text);
    text-decoration: none;
    transition: var(--transition);
    position: relative;
    padding: 5px 0;
  }

  .navbar .menu a:after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
  }

  .navbar .menu a:hover {
    color: var(--accent);
  }

  .navbar .menu a:hover:after {
    width: 100%;
  }

  .hero {
    height: 60vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
    padding: 0 10%;
    position: relative;
    overflow: hidden;
  }

  .hero:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, rgba(255,255,255,0.1) 50%, transparent 50%);
    background-size: 200% 200%;
    animation: moveLines 15s linear infinite;
    z-index: -1;
  }

  .hero h1 {
    font-size: 3em;
    margin-bottom: 20px;
    text-shadow: 0 2px 10px rgba(0,0,0,0.5);
  }

  .hero p {
    font-size: 1.2em;
    max-width: 700px;
    margin-bottom: 30px;
  }

  .tech-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
    padding: 50px 5%;
  }

  .tech-card {
    background: var(--bg-light);
    border-radius: var(--border-radius);
    padding: 30px;
    transition: var(--transition);
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
  }

  .tech-card:before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.1), transparent);
    transform: rotate(45deg);
    transition: var(--transition);
    opacity: 0;
  }

  .tech-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.4);
  }

  .tech-card:hover:before {
    animation: shine 1.5s;
  }

  @keyframes shine {
    0% { opacity: 0; left: -50%; }
    50% { opacity: 1; }
    100% { opacity: 0; left: 150%; }
  }

  .tech-card h2 {
    margin-bottom: 15px;
    color: var(--accent);
    position: relative;
    display: inline-block;
  }

  .tech-card h2:after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 50px;
    height: 2px;
    background: var(--accent);
  }

  .tech-card p {
    margin-bottom: 20px;
  }

  .tech-card .img-container {
    width: 100%;
    height: 200px;
    border-radius: var(--border-radius);
    overflow: hidden;
    margin-bottom: 20px;
    position: relative;
  }

  .tech-card .img-container img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
  }

  .tech-card:hover .img-container img {
    transform: scale(1.05);
  }

  pre {
    background: rgba(0,0,0,0.3);
    border-radius: var(--border-radius);
    padding: 20px;
    overflow-x: auto;
    margin: 20px 0;
    font-family: 'Courier New', monospace;
    position: relative;
  }

  pre:before {
    content: 'CSS';
    position: absolute;
    top: 0;
    right: 0;
    background: var(--accent);
    color: white;
    padding: 2px 10px;
    border-radius: 0 var(--border-radius) 0 var(--border-radius);
    font-size: 0.8em;
  }

  code {
    font-family: 'Courier New', monospace;
    background: rgba(0,0,0,0.2);
    padding: 2px 5px;
    border-radius: 3px;
  }

  .button {
    background: linear-gradient(45deg, var(--secondary), var(--accent));
    border: none;
    color: white;
    padding: 12px 25px;
    text-align: center;
    text-decoration: none;
    display: inline-block;
    font-size: 1em;
    border-radius: var(--border-radius);
    transition: var(--transition);
    cursor: pointer;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    position: relative;
    overflow: hidden;
  }

  .button:after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(45deg, transparent, rgba(255,255,255,0.3), transparent);
    transform: translateX(-100%);
    transition: var(--transition);
  }

  .button:hover {
    transform: translateY(-3px);
    box-shadow: 0 7px 20px rgba(0,0,0,0.3);
  }

  .button:hover:after {
    transform: translateX(100%);
  }

  .footer {
    background: rgba(13, 71, 161, 0.9);
    padding: 40px 5%;
    text-align: center;
    margin-top: 50px;
    position: relative;
  }

  .footer:before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--accent), transparent);
  }

  .footer-links {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-bottom: 20px;
  }

  .footer a {
    color: var(--accent);
    text-decoration: none;
    transition: var(--transition);
    position: relative;
  }

  .footer a:after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    width: 0;
    height: 1px;
    background: var(--accent);
    transition: var(--transition);
  }

  .footer a:hover {
    color: white;
  }

  .footer a:hover:after {
    width: 100%;
  }

  .copyright {
    margin-top: 20px;
    font-size: 0.9em;
    opacity: 0.8;
  }

  @media (max-width: 768px) {
    .hero h1 {
      font-size: 2em;
    }
    
    .hero p {
      font-size: 1em;
    }
    
    .navbar .menu {
      gap: 15px;
    }
    
    .tech-grid {
      grid-template-columns: 1fr;
    }
    
    .tech-card {
      padding: 20px;
    }
  }