@layer theme{:root,:host{--font-sans:ui-sans-serif,system-ui,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color Emoji";--font-mono:ui-monospace,SFMono-Regular,Menlo,Monaco,Consolas,"Liberation Mono","Courier New",monospace;--spacing:.25rem;--radius-md:.375rem;--radius-lg:.5rem;--shadow-md:0 4px 6px -1px #0000001a,0 2px 4px -2px #0000001a;--shadow-lg:0 10px 15px -3px #0000001a,0 4px 6px -4px #0000001a;--default-font-family:var(--font-sans);--default-mono-font-family:var(--font-mono)}}@layer base{*,:after,:before,::backdrop{box-sizing:border-box;border:0 solid;margin:0;padding:0}::file-selector-button{box-sizing:border-box;border:0 solid;margin:0;padding:0}html,:host{-webkit-text-size-adjust:100%;tab-size:4;line-height:1.5;font-family:var(--default-font-family,ui-sans-serif,system-ui,sans-serif,"Apple Color Emoji","Segoe UI Emoji","Segoe UI Symbol","Noto Color 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components;@layer utilities{.relative{position:relative}.static{position:static}.start{inset-inline-start:var(--spacing)}.flex{display:flex}.hidden{display:none}.inline{display:inline}.table{display:table}.resize{resize:both}}:root{--bg-page:#312e2b;--bg-sidebar:#272522;--bg-card:#21201d;--bg-hover:#3a3733;--bg-input:#1a1917;--text-primary:#e8e6e3;--text-secondary:#9e9b98;--text-muted:#6b6966;--border-color:#3d3a37;--accent:#81b64c;--accent-hover:#6fa33e;--accent-light:#81b64c1f;--accent-dark:#5a8a30;--danger:#e04040;--danger-hover:#c73535;--gold:#e8b731;--shadow-sm:0 1px 3px #0000004d;--shadow-md:0 4px 12px #0006;--shadow-lg:0 8px 30px #00000080;--radius:4px;--radius-md:6px;--radius-lg:8px;--transition:.15s ease;--font-sans:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;--font-mono:"SF Mono","Monaco","Consolas","Liberation 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var(--border-color);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);margin-bottom:24px;padding:28px}.input-group{margin-bottom:20px}.input-label{color:var(--text-secondary);text-transform:uppercase;letter-spacing:.06em;margin-bottom:6px;font-size:12px;font-weight:600;display:block}.input-field{background-color:var(--bg-input);border:1px solid var(--border-color);border-radius:var(--radius);width:100%;color:var(--text-primary);font-family:var(--font-sans);transition:border-color var(--transition),box-shadow var(--transition);outline:none;padding:11px 14px;font-size:15px}.input-field:focus{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-light)}.input-field::placeholder{color:var(--text-muted)}.input-error{color:var(--danger);margin-top:4px;font-size:12px}.start-btn{width:100%}.instructions{background-color:var(--bg-sidebar);border:1px solid var(--border-color);border-radius:var(--radius-lg);margin-bottom:24px;padding:20px}.instructions 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12px;font-size:14px}.leaderboard-table tbody tr:hover{background-color:var(--bg-hover)}.leaderboard-table tbody tr:last-child td{border-bottom:none}.rank-cell{text-align:center;width:40px}.rank-1 .player-cell,.rank-2 .player-cell,.rank-3 .player-cell{font-weight:600}.moves-cell{font-family:var(--font-mono);color:var(--accent);font-weight:600}.date-cell{color:var(--text-muted);font-size:13px}.leaderboard-table-wrapper.compact .leaderboard-table td{padding:8px 12px;font-size:13px}.move-history-list::-webkit-scrollbar{width:4px}.move-history-list::-webkit-scrollbar-track{background:0 0}.move-history-list::-webkit-scrollbar-thumb{background:var(--border-color);border-radius:2px}.view-leaderboard-link{text-align:center;border-top:1px solid var(--border-color);color:var(--accent);transition:color var(--transition);margin-top:14px;padding-top:12px;font-size:13px;font-weight:600;text-decoration:none;display:block}.view-leaderboard-link:hover{color:var(--accent-hover);text-decoration:underline}.leaderboard-page{justify-content:center;align-items:flex-start;min-height:100vh;padding:40px 20px;display:flex}.leaderboard-container{width:100%;max-width:700px}.leaderboard-page-header{justify-content:space-between;align-items:center;margin-bottom:24px;display:flex}.leaderboard-header-left{align-items:center;gap:12px;display:flex}.back-link{border-radius:var(--radius-md);width:36px;height:36px;color:var(--text-secondary);transition:all var(--transition);justify-content:center;align-items:center;text-decoration:none;display:flex}.back-link:hover{background-color:var(--bg-hover);color:var(--text-primary)}.leaderboard-header-title{align-items:center;gap:8px;display:flex}.leaderboard-header-title 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16px;display:flex}.leaderboard-footer{justify-content:center;align-items:center;gap:6px;margin-top:16px;padding:8px;display:flex}.live-dot{background-color:var(--accent);border-radius:50%;width:6px;height:6px;animation:2s ease-in-out infinite live-pulse}@keyframes live-pulse{0%,to{opacity:1}50%{opacity:.3}}.live-text{color:var(--text-muted);font-size:12px}.spinning{animation:1s linear infinite spin}@keyframes spin{to{transform:rotate(360deg)}}@media (max-width:900px){.game-main{flex-direction:column;align-items:center;padding:8px}.board-column{max-width:560px;width:100%!important}.chess-board-container{width:100%}.side-panel{width:100%;max-width:560px}.move-history-list{min-height:120px;max-height:250px}.landing-title{font-size:28px}.landing-subtitle{font-size:14px}.start-card{padding:24px}}@media (max-width:480px){.landing-container{padding:24px 14px 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