.chess-shell{color:#f8fafc;box-sizing:border-box;background:radial-gradient(circle at 50% 20%,#1e1b4b 0%,#0f172a 70%,#020617 100%);flex-direction:column;align-items:center;min-height:100vh;padding:1rem;font-family:system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;display:flex;position:relative;overflow-x:hidden}.chess-header{z-index:10;border-bottom:1px solid #ffffff1a;justify-content:space-between;align-items:center;width:100%;max-width:900px;margin-bottom:1rem;padding:.75rem 1rem;display:flex}.chess-home{color:#a78bfa;background:#ffffff0d;border-radius:6px;padding:.4rem .8rem;font-size:.9rem;text-decoration:none;transition:all .2s}.chess-home:hover{color:#fff;background:#ffffff26}.chess-brand{align-items:center;gap:.75rem;display:flex}.chess-brand span.seal{color:#fff;background:linear-gradient(135deg,#8b5cf6 0%,#6d28d9 100%);border-radius:8px;justify-content:center;align-items:center;width:36px;height:36px;font-size:1.2rem;font-weight:900;display:inline-flex;box-shadow:0 4px 12px #8b5cf64d}.chess-brand h1{margin:0;font-size:1.25rem;font-weight:700}.chess-brand small{color:#c4b5fd;font-size:.65rem;display:block}.chess-main-layout{justify-content:center;align-items:flex-start;gap:1.5rem;width:100%;max-width:900px;display:flex}.chess-board-area{flex-direction:column;align-items:center;display:flex}.captured-bar{align-items:center;gap:4px;width:100%;max-width:480px;min-height:28px;padding:0 .5rem;font-size:1.2rem;display:flex}.chess-board{-webkit-user-select:none;user-select:none;box-sizing:border-box;border:8px solid #334155;border-radius:8px;grid-template-rows:repeat(8,1fr);grid-template-columns:repeat(8,1fr);width:90vw;max-width:480px;height:90vw;max-height:480px;display:grid;box-shadow:0 16px 36px #0009}.chess-cell{cursor:pointer;box-sizing:border-box;justify-content:center;align-items:center;font-size:2.2rem;display:flex;position:relative}.chess-cell.light{color:#1e293b;background:linear-gradient(145deg,#e8dfcf,#c8b99f)}.chess-cell.dark{color:#f8fafc;background:linear-gradient(145deg,#65736d,#3d4b49)}.chess-cell.selected{box-shadow:inset 0 0 0 3px #ffe9a9;background:#c39a52!important}.chess-cell.last-move{box-shadow:inset 0 0 0 3px #38bdf8b8}.chess-cell:focus-visible{outline-offset:-3px;z-index:2;outline:3px solid #fbbf24}.chess-piece{z-index:2;filter:drop-shadow(0 3px 2px #0000006b);font-family:Segoe UI Symbol,"Noto Sans Symbols 2",serif;font-size:clamp(2rem,7.2vmin,3.45rem);line-height:1;position:relative;transform:translateY(-1px)}.chess-piece.white{color:#fffdf3;text-shadow:0 0 1px #17202a,0 1px #17202a}.chess-piece.black{color:#17202a;text-shadow:0 1px #ffffff59}.move-hint{content:"";background:#22c55eb8;border-radius:50%;width:16px;height:16px;position:absolute;box-shadow:0 0 0 5px #22c55e26}.capture-hint{pointer-events:none;border:4px solid #f87171eb;border-radius:50%;position:absolute;inset:7%}.chess-cell.highlight-capture{box-shadow:inset 0 0 0 4px #ef4444cc}.chess-cell.in-check{background:#ef4444!important}.chess-sidebar{box-sizing:border-box;background:#0f172ad9;border:1px solid #ffffff1a;border-radius:12px;flex-direction:column;gap:.5rem;width:220px;height:480px;padding:.75rem;display:flex}.chess-sidebar h3{color:#c4b5fd;border-bottom:1px solid #ffffff1a;margin:0;padding-bottom:.4rem;font-size:.95rem}.move-log-list{flex:1;font-family:monospace;font-size:.85rem;line-height:1.6;overflow-y:auto}.move-log-row{justify-content:space-between;padding:2px 4px;display:flex}.move-log-row:nth-child(odd){background:#ffffff08}@media (max-width:768px){.chess-main-layout{flex-direction:column;align-items:center}.chess-sidebar{width:100%;max-width:480px;height:140px}}