:root{--foreground:#171717;--background:#fff;--primary:#2563eb;--primary-hover:#1d4ed8;--border:#e5e7eb;--muted:#6b7280}@media (prefers-color-scheme:dark){:root{--foreground:#ededed;--background:#0a0a0a;--primary:#3b82f6;--primary-hover:#60a5fa;--border:#374151;--muted:#9ca3af}}*{box-sizing:border-box;padding:0;margin:0}body,html{max-width:100vw;overflow-x:hidden;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif}body{color:var(--foreground);background:var(--background)}a{color:var(--primary);text-decoration:none}a:hover{text-decoration:underline}button{cursor:pointer;border:none;background:var(--primary);color:#fff;padding:.75rem 1.5rem;border-radius:.5rem;font-size:1rem;font-weight:500;transition:background .2s}button:hover{background:var(--primary-hover)}button:disabled{opacity:.5;cursor:not-allowed}input{border:1px solid var(--border);background:var(--background);color:var(--foreground);padding:.75rem 1rem;border-radius:.5rem;font-size:1rem;width:100%}input:focus{outline:2px solid var(--primary);outline-offset:2px}.container{max-width:1200px;margin:0 auto;padding:2rem}.card{border:1px solid var(--border);border-radius:.75rem;padding:1.5rem;background:var(--background)}.text-muted{color:var(--muted)}.text-center{text-align:center}.mt-4{margin-top:1rem}.mt-8{margin-top:2rem}.mb-4{margin-bottom:1rem}.flex{display:flex}.gap-4{gap:1rem}.items-center{align-items:center}.justify-center{justify-content:center}