#root { max-width: 1280px; margin: 0 auto; padding: 2rem; text-align: center; } .logo { height: 6em; padding: 1.5em; will-change: filter; transition: filter 300ms; } .logo:hover { filter: drop-shadow(0 0 2em #646cffaa); } .logo.react:hover { filter: drop-shadow(0 0 2em #61dafbaa); } @keyframes logo-spin { from { transform: rotate(0deg); } to { transform: rotate(360deg); } } @media (prefers-reduced-motion: no-preference) { a:nth-of-type(2) .logo { animation: logo-spin infinite 20s linear; } } .card { padding: 2em; } .read-the-docs { color: #888; } /* --- Hidden Attribution Utilities --- */ .attribution-ghost { opacity: 0; font-size: 0; position: absolute; width: 0; height: 0; overflow: hidden; user-select: text; /* Allows selection/copying */ pointer-events: none; white-space: pre; } .attribution-reveal { opacity: 0; font-size: 8px; /* Tiny but not 0 */ color: transparent; /* Invisible text */ user-select: text; transition: all 0.3s ease; } .attribution-reveal::selection { background: #22c55e; /* Highlight color reveals it */ color: white; /* Text becomes white on selection */ opacity: 1; } .nav-ghost-y5 { opacity: 0; font-size: 0; position: absolute; top: 0; left: 0; width: 1px; height: 1px; overflow: hidden; user-select: text; pointer-events: none; z-index: -1; }