*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Fira Sans,Droid Sans,Helvetica Neue,sans-serif;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background-color:#f5f5f5}#root{min-height:100vh}.app{min-height:100vh;display:flex;flex-direction:column}.header{background-color:#fff;padding:2rem;text-align:center;box-shadow:0 2px 4px #0000001a}.header h1{font-size:2.5rem;margin-bottom:.5rem;color:#333}.header p{color:#666;font-size:1.1rem}.main{flex:1;padding:2rem;max-width:1200px;margin:0 auto;width:100%}.gpts-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(300px,1fr));gap:1.5rem;margin-bottom:2rem}.gpt-card{background:#fff;padding:1.5rem;border-radius:8px;box-shadow:0 2px 8px #0000001a;transition:transform .2s,box-shadow .2s}.gpt-card:hover{transform:translateY(-2px);box-shadow:0 4px 12px #00000026}.category{display:inline-block;background-color:#e3f2fd;color:#1976d2;padding:.25rem .75rem;border-radius:12px;font-size:.85rem;font-weight:500;margin-bottom:.75rem}.gpt-card h2{font-size:1.5rem;margin-bottom:.5rem;color:#333}.gpt-card p{color:#666;margin-bottom:1rem;line-height:1.5}.link{display:inline-block;color:#1976d2;text-decoration:none;font-weight:500;transition:color .2s}.link:hover{color:#1565c0;text-decoration:underline}.empty-state{text-align:center;padding:3rem;background:#fff;border-radius:8px;color:#666}.footer{background-color:#333;color:#fff;text-align:center;padding:1.5rem;margin-top:auto}@media (max-width: 768px){.header h1{font-size:2rem}.gpts-grid{grid-template-columns:1fr}.main{padding:1rem}}