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.border{stroke:#9c9c9c;stroke-width:.7%;fill:#9c9c9c}.cm-chessboard.black-and-white.border-type-none .board .border{stroke:#9c9c9c;stroke-width:0;fill:#9c9c9c}.cm-chessboard.black-and-white.border-type-frame .board .border{fill:#fff;stroke:none}.cm-chessboard.black-and-white.border-type-frame .board .border-inner{fill:#9c9c9c;stroke:#9c9c9c;stroke-width:.7%}.cm-chessboard.black-and-white .coordinates{pointer-events:none;-webkit-user-select:none;user-select:none}.cm-chessboard.black-and-white .coordinates .coordinate{fill:#909090;font-size:7px;cursor:default}.cm-chessboard.black-and-white .coordinates .coordinate.black{fill:#fff}.cm-chessboard.black-and-white .coordinates .coordinate.white{fill:#909090}.chessboard-theme-default{--board-light: #e8edf3;--board-dark: #7b8bb5;--coord-on-dark: #6b7aa8;--coord-on-light: #d4dae6}.chessboard-theme-tournament{--board-light: #f0d9b5;--board-dark: #b58863;--coord-on-dark: rgba(255, 255, 255, .7);--coord-on-light: rgba(0, 0, 0, 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rgba(99, 102, 241, .4))}.cm-chessboard .correct-move{fill:#22c55e80;animation:pulse-correct .5s ease-out}.cm-chessboard .incorrect-move{fill:#ef444480;animation:shake .3s ease-out}.cm-chessboard .dragging{cursor:grabbing;opacity:.9;filter:drop-shadow(0 4px 8px rgba(0,0,0,.3))}.cm-chessboard .piece{cursor:grab;transition:transform .1s ease}.cm-chessboard .piece:hover{transform:scale(1.05)}.cm-chessboard .promotion-dialog{background:var(--glass-bg, rgba(255, 255, 255, .05));-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid var(--glass-border, rgba(255, 255, 255, .1));border-radius:var(--radius-md, 12px);box-shadow:0 8px 32px #0000004d}.cm-chessboard .promotion-dialog .piece{cursor:pointer;padding:8px;border-radius:8px;transition:background .2s ease}.cm-chessboard .promotion-dialog .piece:hover{background:#6366f14d}@keyframes pulse-correct{0%{opacity:1;transform:scale(1)}50%{opacity:.8;transform:scale(1.05)}to{opacity:1;transform:scale(1)}}@keyframes 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.piece{touch-action:none}}.puzzle-feedback{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;pointer-events:none;z-index:10}.puzzle-feedback.correct .feedback-icon{color:#22c55e;animation:scale-in .3s ease-out}.puzzle-feedback.incorrect .feedback-icon{color:#ef4444;animation:shake .3s ease-out}.puzzle-feedback .feedback-icon{font-size:64px;filter:drop-shadow(0 4px 8px rgba(0,0,0,.3))}@keyframes scale-in{0%{transform:scale(0);opacity:0}50%{transform:scale(1.2)}to{transform:scale(1);opacity:1}}:root{--bg-primary: #0a0a0f;--bg-secondary: #12121a;--bg-tertiary: #1a1a24;--bg-card: rgba(255, 255, 255, .03);--bg-card-hover: rgba(255, 255, 255, .06);--accent-primary: #6366f1;--accent-secondary: #8b5cf6;--accent-tertiary: #a855f7;--accent-cyan: #06b6d4;--gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #a855f7 100%);--text-primary: #ffffff;--text-secondary: rgba(255, 255, 255, .7);--text-muted: rgba(255, 255, 255, .5);--glass-bg: rgba(255, 255, 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