/* Modern Dark Design */
:root {
  --primary: #00d9ff;
  --primary-dark: #00b8db;
  --secondary: #7c3aed;
  --bg-dark: #0a0e27;
  --bg-card: #151937;
  --bg-card-hover: #1a1f47;
  --text-primary: #ffffff;
  --text-secondary: #a0aec0;
  --border: rgba(255, 255, 255, 0.1);
  --shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: var(--bg-dark);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}
.skip-to-content { position: absolute; top: -40px; left: 0; background: var(--primary); color: var(--bg-dark); padding: 8px 16px; text-decoration: none; z-index: 100; }
.skip-to-content:focus { top: 0; }
header { background: rgba(10, 14, 39, 0.95); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 50; }
.header-container { max-width: 1280px; margin: 0 auto; padding: 1rem 1.5rem; display: flex; justify-content: space-between; align-items: center; }
.logo { font-size: 1.5rem; font-weight: 700; background: linear-gradient(135deg, var(--primary), var(--secondary)); -webkit-background-clip: text; -webkit-text-fill-color: transparent; text-decoration: none; }
nav ul { list-style: none; display: flex; gap: 2rem; }
nav a { color: var(--text-secondary); text-decoration: none; font-weight: 500; transition: var(--transition); }
nav a:hover { color: var(--primary); }
.mobile-menu-btn { display: none; background: none; border: none; color: white; font-size: 1.5rem; }
main { max-width: 1280px; margin: 0 auto; padding: 2rem 1.5rem; min-height: 80vh; }
.hero { text-align: center; padding: 4rem 0; background: linear-gradient(135deg, rgba(124, 58, 237, 0.1), rgba(0, 217, 255, 0.1)); border-radius: 16px; margin-bottom: 4rem; border: 1px solid var(--border); }
.hero h1 { font-size: 2.5rem; margin-bottom: 1rem; color: var(--primary); }
.articles-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 2rem; }
.article-card { background: var(--bg-card); border-radius: 12px; overflow: hidden; border: 1px solid var(--border); transition: var(--transition); display: flex; flex-direction: column; }
.article-card:hover { transform: translateY(-5px); border-color: var(--primary); }
.article-card img { width: 100%; height: 200px; object-fit: cover; }
.article-card-content { padding: 1.5rem; flex: 1; display: flex; flex-direction: column; }
.article-card h3 { font-size: 1.25rem; margin-bottom: 0.5rem; }
.article-card h3 a { color: var(--text-primary); text-decoration: none; }
.article-card h3 a:hover { color: var(--primary); }
.read-more { color: var(--primary); text-decoration: none; font-weight: 600; margin-top: auto; }
footer { background: rgba(10, 14, 39, 0.95); border-top: 1px solid var(--border); padding: 2rem 0; margin-top: 4rem; text-align: center; color: var(--text-secondary); }
.footer-links { display: flex; justify-content: center; gap: 2rem; margin-bottom: 1rem; }
.footer-links a { color: var(--text-secondary); text-decoration: none; }
@media (max-width: 768px) { nav { display: none; } .mobile-menu-btn { display: block; } .articles-grid { grid-template-columns: 1fr; } }