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.card{border-radius:0;border-width:4px;box-shadow:none}[data-theme=retro] h1,[data-theme=retro] h2,[data-theme=retro] h3,[data-theme=retro] h4,[data-theme=retro] h5,[data-theme=retro] h6{font-family:Courier New,Courier,monospace;text-transform:uppercase;letter-spacing:3px}[data-theme=retro] .nav{border-bottom:6px solid #00e436}[data-theme=retro] .nav-brand{font-family:Courier New,Courier,monospace;text-transform:uppercase;letter-spacing:4px}[data-theme=retro] .input,[data-theme=retro] .theme-toggle{border-radius:0;border-width:4px}[data-theme=retro] .input{font-family:Courier New,Courier,monospace}[data-theme=retro] .chessboard{border-radius:0;border-width:8px}[data-theme=retro] .badge{border-radius:0;font-family:Courier New,Courier,monospace}*{box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background-color:var(--bg);color:var(--text);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;transition:background-color .2s ease,color .2s ease}:focus-visible{outline:3px solid var(--accent-primary);outline-offset:2px}.skip-link:focus{top:0!important}@media (prefers-reduced-motion:reduce){*,:after,:before{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}.btn{display:inline-block;padding:10px 20px;font-size:16px;font-weight:500;background:var(--bg);color:var(--text);border:var(--border-dark);border-radius:4px;cursor:pointer;text-decoration:none;transition:all .2s ease}.btn-primary,.btn:hover{background:var(--text);color:var(--bg)}.btn-primary:hover{background:var(--accent-primary);border-color:var(--accent-primary)}.btn-secondary{background:var(--bg-light);color:var(--text)}.btn-secondary:hover{background:var(--bg-gray)}.card{background:var(--bg);border:var(--border-light);border-radius:8px;padding:24px;box-shadow:var(--shadow-sm)}.card:hover{box-shadow:var(--shadow-md)}[data-theme=modern-dark] .card,[data-theme=modern] .card{border-radius:var(--border-radius-md);border:1px solid var(--border-light);box-shadow:var(--shadow-md);padding:28px;transition:all .3s cubic-bezier(.4,0,.2,1)}[data-theme=modern-dark] .card:hover,[data-theme=modern] .card:hover{box-shadow:var(--shadow-lg);transform:translateY(-2px)}[data-theme=modern-dark] .btn,[data-theme=modern] .btn{border-radius:var(--border-radius-sm);padding:12px 24px;font-weight:600;box-shadow:var(--shadow-sm);transition:all .3s cubic-bezier(.4,0,.2,1)}[data-theme=modern-dark] .btn:hover,[data-theme=modern] .btn:hover{transform:translateY(-1px);box-shadow:var(--shadow-md)}[data-theme=modern-dark] .btn-primary,[data-theme=modern] .btn-primary{background:linear-gradient(135deg,var(--accent-primary),#2563eb);border:none;color:#fff}[data-theme=modern-dark] .input,[data-theme=modern] .input{border-radius:var(--border-radius-sm);border:2px solid var(--border-light);padding:14px 16px;transition:all .2s ease}[data-theme=modern-dark] .input:focus,[data-theme=modern] .input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px rgba(59,130,246,.1)}[data-theme=modern-dark] .section,[data-theme=modern] .section{padding:40px 24px}[data-theme=modern-dark] header,[data-theme=modern] header{border-radius:0 0 var(--border-radius-lg) var(--border-radius-lg);box-shadow:var(--shadow-md)}[data-theme=modern-dark] .chessboard,[data-theme=modern] .chessboard{border-radius:var(--border-radius-md);overflow:hidden;box-shadow:var(--shadow-lg)}.input{width:100%;padding:12px;font-size:16px;background:var(--bg);color:var(--text);border:var(--border-medium);border-radius:4px;outline:none}.input:focus{border-color:var(--accent-primary);box-shadow:0 0 0 3px rgba(13,110,253,.15)}h1,h2,h3,h4,h5,h6{font-weight:600;line-height:1.3;margin-bottom:1rem;color:var(--text)}h1{font-size:48px}h2{font-size:36px}h3{font-size:28px}h4{font-size:22px}a{color:var(--accent-primary);text-decoration:none}a:hover{text-decoration:underline}table{width:100%;border-collapse:collapse}td,th{padding:12px;text-align:left;border-bottom:var(--border-light)}th{font-weight:600}.badge,th{color:var(--text-dark)}.badge{display:inline-block;padding:4px 12px;font-size:14px;font-weight:500;border-radius:999px;background:var(--bg-light)}.badge-primary{background:var(--accent-primary);color:var(--bg)}.badge-success{background:var(--accent-success);color:var(--bg)}.badge-danger{background:var(--accent-danger);color:var(--bg)}.text-muted{color:var(--text-gray)}.text-light{color:var(--text-light)}.bg-light{background:var(--bg-light)}.bg-gray{background:var(--bg-gray)}.border-light{border:var(--border-light)}.shadow-sm{box-shadow:var(--shadow-sm)}.shadow-md{box-shadow:var(--shadow-md)}.shadow-lg{box-shadow:var(--shadow-lg)}.chessboard{border:var(--border-medium);border-radius:4px;box-shadow:var(--shadow-md)}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--bg-light)}::-webkit-scrollbar-thumb{background:var(--text-light);border-radius:4px}::-webkit-scrollbar-thumb:hover{background:var(--text-gray)}.nav{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;border-bottom:var(--border-light);background:var(--bg)}.nav-brand{font-size:24px;font-weight:700;color:var(--text);text-decoration:none}.nav-links{display:flex;gap:24px;align-items:center}.nav-link{color:var(--text-dark);text-decoration:none;font-weight:500;transition:color .2s}.nav-link:hover{color:var(--accent-primary);text-decoration:none}.theme-toggle{display:flex;align-items:center;justify-content:center;width:40px;height:40px;border:var(--border-light);border-radius:50%;background:var(--bg-light);color:var(--text);cursor:pointer;transition:all .2s ease;font-size:20px}.theme-toggle:hover{background:var(--bg-gray);transform:scale(1.05)}.section{padding:80px 24px}.section-light{background:var(--bg-light)}.container{max-width:1200px;margin:0 auto;padding:0 24px}.grid{display:grid;gap:24px}.grid-2{grid-template-columns:repeat(2,1fr)}.grid-3{grid-template-columns:repeat(3,1fr)}@media (max-width:768px){.grid-2,.grid-3{grid-template-columns:1fr}h1{font-size:36px}h2{font-size:28px}}.hover\:scale-105:hover{--tw-scale-x:1.05;--tw-scale-y:1.05;transform:translate(var(--tw-translate-x),var(--tw-translate-y)) rotate(var(--tw-rotate)) skewX(var(--tw-skew-x)) skewY(var(--tw-skew-y)) scaleX(var(--tw-scale-x)) scaleY(var(--tw-scale-y))}.hover\:bg-blue-700:hover{--tw-bg-opacity:1;background-color:rgb(29 78 216/var(--tw-bg-opacity,1))}.hover\:bg-gray-100:hover{--tw-bg-opacity:1;background-color:rgb(243 244 246/var(--tw-bg-opacity,1))}.hover\:bg-green-700:hover{--tw-bg-opacity:1;background-color:rgb(21 128 61/var(--tw-bg-opacity,1))}.hover\:bg-primary-600:hover{--tw-bg-opacity:1;background-color:rgb(2 132 199/var(--tw-bg-opacity,1))}.hover\:text-\[var\(--accent-primary\)\]:hover{color:var(--accent-primary)}.focus\:outline-none:focus{outline:2px solid transparent;outline-offset:2px}.disabled\:cursor-not-allowed:disabled{cursor:not-allowed}.disabled\:opacity-50:disabled{opacity:.5}@media (min-width:640px){.sm\:px-6{padding-left:1.5rem;padding-right:1.5rem}.sm\:text-sm{font-size:.875rem;line-height:1.25rem}}@media (min-width:768px){.md\:flex{display:flex}.md\:hidden{display:none}.md\:grid-cols-2{grid-template-columns:repeat(2,minmax(0,1fr))}.md\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.md\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.md\:grid-cols-5{grid-template-columns:repeat(5,minmax(0,1fr))}.md\:flex-row{flex-direction:row}.md\:items-center{align-items:center}}@media (min-width:1024px){.lg\:col-span-3{grid-column:span 3/span 3}.lg\:grid-cols-3{grid-template-columns:repeat(3,minmax(0,1fr))}.lg\:grid-cols-4{grid-template-columns:repeat(4,minmax(0,1fr))}.lg\:px-8{padding-left:2rem;padding-right:2rem}}@media (prefers-color-scheme:dark){.dark\:border-gray-600{--tw-border-opacity:1;border-color:rgb(75 85 99/var(--tw-border-opacity,1))}.dark\:bg-gray-700{--tw-bg-opacity:1;background-color:rgb(55 65 81/var(--tw-bg-opacity,1))}.dark\:bg-gray-800{--tw-bg-opacity:1;background-color:rgb(31 41 55/var(--tw-bg-opacity,1))}.dark\:text-gray-300{--tw-text-opacity:1;color:rgb(209 213 219/var(--tw-text-opacity,1))}.dark\:text-white{--tw-text-opacity:1;color:rgb(255 255 255/var(--tw-text-opacity,1))}}