/* Global Styles: Modern Dark Theme with Gradient Background */
:root {
    --primary-bg: linear-gradient(135deg, #4A90E2, #121212);
    --secondary-bg: #1e1e1e;
    --accent-color: #4A90E2;
    --text-color: #ffffff;
    --text-muted: #b3b3b3;
    --card-bg: #252525;
    --card-shadow: rgba(0, 0, 0, 0.5);
  }
  
  body, html {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    color: var(--text-color);
    background: var(--primary-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
  }
  
  .frame {
    max-width: 1200px;
    width: 95%;
    background-color: var(--secondary-bg);
    border-radius: 12px;
    padding: 20px;
    box-shadow: 0 4px 16px var(--card-shadow);
  }
  
  header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
  }
  
  header .logo {
    font-size: 1.8em;
    font-weight: bold;
    color: var(--accent-color);
  }
  
  header ul {
    list-style: none;
    display: flex;
    gap: 15px;
  }
  
  header a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s ease;
  }
  
  header a:hover {
    color: var(--accent-color);
  }
  
  .hero {
    text-align: center;
    padding: 40px 0;
  }
  
  .hero h1 {
    font-size: 2.5em;
    margin-bottom: 10px;
  }
  
  .hero p {
    font-size: 1.2em;
    color: var(--text-muted);
  }
  
  section {
    margin: 20px 0;
    text-align: center;
  }
  
  .about, .projects, .technologies, .values {
    margin-bottom: 20px;
  }
  
  .about h2, .projects h2, .technologies h2, .values h2 {
    color: var(--accent-color);
    margin-bottom: 20px;
  }
  
  .project-grid {
    display: grid;
    gap: 20px;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    justify-content: center;
  }
  
  .project-card {
    background-color: var(--card-bg);
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 8px var(--card-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
  }
  
  .project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px var(--card-shadow);
  }
  
  .project-card a {
    text-decoration: none;
    color: var(--text-color);
  }
  
  .project-card h3 {
    margin: 0 0 10px;
    color: var(--accent-color);
  }
  
  footer {
    text-align: center;
    padding: 10px;
    color: var(--text-muted);
    font-size: 0.9em;
  }