.opening-board-container{flex-direction:column;align-items:center;gap:16px;padding:20px;display:flex}.opening-board-wrapper{align-items:stretch;gap:4px;display:flex;position:relative}.rank-labels{flex-direction:column;justify-content:space-around;padding:0 4px;display:flex}.board-with-files{flex-direction:column;display:flex}.file-labels{justify-content:space-around;padding:4px 0;display:flex}.coord-label{color:var(--text-secondary);text-align:center;width:14px;font-size:12px;font-weight:600}.opening-board{aspect-ratio:1;-webkit-touch-callout:none;-webkit-user-select:none;user-select:none;border:1px solid #ffffff26;border-radius:12px;grid-template-rows:repeat(8,1fr);grid-template-columns:repeat(8,1fr);width:min(400px,75vw);display:grid;position:relative;overflow:hidden;box-shadow:0 8px 32px #0006}.opening-board img{-webkit-user-drag:none;-webkit-touch-callout:none;pointer-events:none}.opening-square{aspect-ratio:1;justify-content:center;align-items:center;display:flex}.opening-square.light{background-color:#e8dcc8}.opening-square.dark{background-color:#9e7c5c}[data-theme=dark] .opening-square.light{background-color:#769ab8}[data-theme=dark] .opening-square.dark{background-color:#34526a}.opening-square img{pointer-events:none;width:85%;height:85%}.arrow-overlay{pointer-events:none;z-index:10;width:100%;height:100%;position:absolute;top:0;left:0}.opening-move-info{text-align:center;width:min(440px,80vw);padding:16px 20px}.move-number{color:var(--text-secondary);margin-bottom:6px;font-size:14px;font-weight:600}.move-san{color:var(--text-primary);margin-left:8px;font-family:monospace;font-size:16px}.move-comment{color:var(--text-primary);font-size:15px}.opening-controls{flex-wrap:wrap;justify-content:center;gap:8px;display:flex}.opening-controls button{cursor:pointer;color:var(--text-primary);border-radius:10px;padding:10px 16px;font-size:13px;font-weight:600;transition:all .2s}.opening-controls button:hover:not(:disabled){transform:translateY(-2px)}.opening-controls button:disabled{opacity:.4;cursor:not-allowed}.opening-moves-list{flex-wrap:wrap;justify-content:center;gap:6px;width:min(440px,80vw);padding:12px 16px;display:flex}.move-item{color:var(--text-secondary);cursor:pointer;border-radius:6px;padding:6px 12px;font-family:monospace;font-size:13px;transition:all .15s}.move-item:hover{color:var(--text-primary);background:#ffffff1a}.move-item.active{color:var(--text-primary);background:#6366f14d;font-weight:600}@media (max-width:600px){.opening-board-container{gap:12px;padding:10px}.opening-controls{gap:6px}.opening-controls button{padding:8px 12px;font-size:12px}.move-comment{font-size:14px}.opening-moves-list{gap:4px;padding:10px 12px}.move-item{padding:5px 10px;font-size:12px}}.move-side-indicator{border-radius:8px;margin-right:8px;padding:2px 8px;font-size:12px;font-weight:600}.move-side-indicator.your-move{color:#15803d;background:#15803d33}.move-side-indicator.opponent-move{color:#dc2626;background:#dc262633}