:root{--bg-color:#f8f9fa;--surface-color:#fff;--text-primary:#2d3748;--text-secondary:#718096;--primary-color:#3182ce;--primary-hover:#2b6cb0;--border-color:#e2e8f0;--shadow-sm:0 1px 3px #0000000d;--shadow-md:0 4px 6px -1px #0000000d, 0 2px 4px -1px #00000008;--shadow-lg:0 10px 15px -3px #0000000d, 0 4px 6px -2px #00000006;--radius-md:.5rem;--radius-lg:1rem;--radius-full:9999px;--color-red:#e53e3e;--color-blue:#3182ce;--color-green:#38a169;--color-yellow:#d69e2e;--color-purple:#805ad5;--color-orange:#dd6b20;--color-pink:#d53f8c;--color-teal:#319795;--color-empty:#edf2f7}@media (prefers-color-scheme:dark){:root{--bg-color:#1a202c;--surface-color:#2d3748;--text-primary:#f7fafc;--text-secondary:#a0aec0;--border-color:#4a5568;--color-empty:#4a5568}}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-color);color:var(--text-primary);-webkit-font-smoothing:antialiased;flex-direction:column;min-height:100vh;font-family:Inter,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5;display:flex}#root{flex-direction:column;min-height:100vh;display:flex}h1,h2,h3,h4,h5,h6{margin-bottom:1rem;font-weight:600;line-height:1.2}a{color:var(--primary-color);text-decoration:none;transition:color .2s}a:hover{color:var(--primary-hover)}button{cursor:pointer;background:0 0;border:none;font-family:inherit}.container{flex-direction:column;flex:1;width:100%;max-width:800px;margin:0 auto;padding:2rem 1rem;display:flex}.card{background-color:var(--surface-color);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);border:1px solid var(--border-color);padding:2rem}.btn{border-radius:var(--radius-md);justify-content:center;align-items:center;gap:.5rem;padding:.75rem 1.5rem;font-weight:500;transition:all .2s;display:inline-flex}.btn-primary{background-color:var(--primary-color);color:#fff}.btn-primary:hover{background-color:var(--primary-hover);transform:translateY(-1px)}.btn-secondary{color:var(--text-primary);border:1px solid var(--border-color);background-color:#0000}.btn-secondary:hover{background-color:var(--bg-color)}.title{text-align:center;letter-spacing:-.025em;background:linear-gradient(to right, var(--primary-color), var(--color-purple));-webkit-text-fill-color:transparent;-webkit-background-clip:text;margin-bottom:2rem;font-size:2.5rem;font-weight:800}.subtitle{text-align:center;color:var(--text-secondary);margin-bottom:2rem}.peg{border-radius:var(--radius-full);width:2.5rem;height:2.5rem;transition:transform .2s;box-shadow:inset 0 2px 4px #ffffff4d,0 2px 4px #0000001a}.peg:hover{transform:scale(1.05)}.peg.empty{background-color:var(--color-empty);box-shadow:inset 0 2px 4px #0000001a}.peg.red{background-color:var(--color-red)}.peg.blue{background-color:var(--color-blue)}.peg.green{background-color:var(--color-green)}.peg.yellow{background-color:var(--color-yellow)}.peg.purple{background-color:var(--color-purple)}.peg.orange{background-color:var(--color-orange)}.peg.pink{background-color:var(--color-pink)}.peg.teal{background-color:var(--color-teal)}.hint-peg{border-radius:var(--radius-full);width:1rem;height:1rem}.hint-peg.correct{background-color:var(--text-primary)}.hint-peg.present{background-color:var(--text-secondary)}.hint-peg.empty{border:1px solid var(--border-color);background-color:#0000}.navbar{background-color:var(--surface-color);box-shadow:var(--shadow-sm);border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;padding:1rem 2rem;display:flex}.nav-links{gap:1rem;display:flex}.nav-item{color:var(--text-secondary);border-radius:var(--radius-md);padding:.5rem;font-weight:500}.nav-item:hover,.nav-item.active{color:var(--primary-color);background-color:var(--bg-color)}