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var(--focus-ring-color)}.primary-btn:disabled,.secondary-btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.game-info{background:var(--gradient-card);border-radius:var(--radius-xl);padding:var(--spacing-6);margin-top:var(--spacing-8);border-left:4px solid var(--primary)}.game-info h3{color:var(--text-light);margin-bottom:var(--spacing-4);font-size:var(--text-xl);font-weight:var(--font-semibold)}.game-info ul{list-style:none;padding:0}.game-info li{padding:var(--spacing-2) 0;color:var(--text-muted);position:relative;padding-left:var(--spacing-6)}.game-info li:before{content:"🎯";position:absolute;left:0}.room-info{text-align:center;margin-bottom:var(--spacing-8);background:var(--gradient-card);border-radius:var(--radius-xl);padding:var(--spacing-6);border:1px solid rgba(255,255,255,.1)}.room-info h2{color:var(--text-light);font-size:var(--text-3xl);font-weight:var(--font-bold);margin-bottom:var(--spacing-3)}.room-status{display:flex;align-items:center;justify-content:center;gap:var(--spacing-2);color:var(--text-muted);font-size:var(--text-lg)}.status-indicator{font-size:var(--text-xl)}.players-section{margin-bottom:var(--spacing-8)}.players-section h3{color:var(--text-light);font-size:var(--text-2xl);font-weight:var(--font-semibold);margin-bottom:var(--spacing-6);text-align:center}.players-list{display:grid;grid-template-columns:repeat(auto-fit,minmax(300px,1fr));gap:var(--spacing-4);margin-bottom:var(--spacing-6)}.player-card{display:flex;align-items:center;gap:var(--spacing-4);padding:var(--spacing-5);background:var(--gradient-card);border-radius:var(--radius-lg);border:2px solid transparent;transition:var(--transition-normal)}.player-card.current-player{border-color:var(--primary);background:linear-gradient(135deg,#f0f3,#80f3);transform:scale(1.02)}.player-card.empty-slot{background:#ffffff0d;border:2px dashed rgba(255,255,255,.3)}.player-avatar{width:50px;height:50px;background:var(--btn-primary-bg);border-radius:var(--radius-full);display:flex;align-items:center;justify-content:center;color:var(--text-light);font-weight:var(--font-bold);font-size:var(--text-xl)}.player-avatar.empty{background:#ffffff1a;color:var(--text-muted)}.player-info{flex:1}.player-name{font-weight:var(--font-semibold);color:var(--text-light);font-size:var(--text-lg);margin-bottom:var(--spacing-1);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%}.player-role{color:var(--text-muted);font-size:var(--text-sm)}.player-side{padding:var(--spacing-2) var(--spacing-3);border-radius:var(--radius-md);font-size:var(--text-sm);font-weight:var(--font-semibold);color:var(--text-light)}.side-1{background:var(--side-0)}.side-2{background:var(--side-1)}.side-3{background:var(--side-2)}.side-4{background:var(--side-3);color:#333}.lobby-actions{text-align:center;margin-bottom:var(--spacing-8)}.start-game-btn.ready{background:var(--btn-info-bg);animation:pulse 2s infinite}@keyframes pulse{0%{box-shadow:0 0 #00ccffb3}70%{box-shadow:0 0 0 10px #0cf0}to{box-shadow:0 0 #0cf0}}.waiting-message{color:var(--text-muted);font-size:var(--text-lg);line-height:var(--leading-relaxed)}.need-players{color:var(--danger);font-weight:var(--font-semibold);margin-top:var(--spacing-3)}.room-sharing{background:var(--gradient-card);border-radius:var(--radius-xl);padding:var(--spacing-6);text-align:center}.room-sharing h4{color:var(--text-light);margin-bottom:var(--spacing-4);font-size:var(--text-xl);font-weight:var(--font-semibold)}.room-id-display{display:flex;align-items:center;justify-content:center;gap:var(--spacing-3);background:#ffffff1a;padding:var(--spacing-4);border-radius:var(--radius-lg);border:1px solid rgba(255,255,255,.1)}.room-id-display code{background:var(--primary);color:var(--text-light);padding:var(--spacing-2) var(--spacing-4);border-radius:var(--radius-md);font-family:var(--font-mono);font-weight:var(--font-bold);font-size:var(--text-lg);letter-spacing:2px}.copy-btn{padding:var(--spacing-2) var(--spacing-3);border:none;background:var(--primary);color:var(--text-light);border-radius:var(--radius-md);cursor:pointer;transition:var(--transition-normal)}.copy-btn:hover{filter:brightness(1.2);transform:scale(1.1)}.copy-btn:focus-visible{outline:none;box-shadow:0 0 0 var(--focus-ring-offset) var(--bg-dark),0 0 0 calc(var(--focus-ring-offset) + var(--focus-ring-width)) var(--focus-ring-color)}@media(max-width:768px){.lobby-container{padding:var(--spacing-4)}.lobby-header h2{font-size:var(--text-3xl)}.lobby-form{padding:var(--spacing-5)}.action-buttons{flex-direction:column}.primary-btn,.secondary-btn{width:100%}.players-list{grid-template-columns:1fr}.room-id-input{flex-direction:column}.room-id-input input,.generate-btn{width:100%}}@media(max-width:480px){.lobby-container{padding:var(--spacing-3)}.lobby-header h2{font-size:var(--text-2xl)}.lobby-header p,.input-group label{font-size:var(--text-base)}.input-group input{padding:var(--spacing-3);font-size:var(--text-base)}.primary-btn,.secondary-btn{padding:var(--spacing-3) var(--spacing-6);font-size:var(--text-base)}.player-card{padding:var(--spacing-4)}.player-avatar{width:40px;height:40px;font-size:var(--text-lg)}.room-id-display{flex-direction:column;gap:var(--spacing-2)}}.main-menu{min-height:100vh;background:var(--gradient-bg);color:var(--text-light);padding:var(--spacing-8);font-family:var(--font-family);position:relative;overflow-y:auto}.menu-header{text-align:center;margin-bottom:3rem}.game-title{font-size:var(--text-6xl);font-weight:var(--font-extrabold);letter-spacing:var(--tracking-wide);margin:0;background:linear-gradient(180deg,#fff,#ccf);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;text-shadow:0 0 40px rgba(255,255,255,.3)}.game-subtitle{font-size:var(--text-lg);color:var(--text-muted);margin-top:var(--spacing-2);letter-spacing:var(--tracking-normal)}.player-name{margin-top:var(--spacing-4);font-size:var(--text-base);color:var(--text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:100%}.click-to-set{color:#fc0;cursor:pointer;text-decoration:underline}.name-input-modal{position:fixed;top:0;left:0;right:0;bottom:0;background:var(--overlay-bg);display:flex;align-items:center;justify-content:center;z-index:var(--z-modal)}.modal-content{background:var(--gradient-card);padding:var(--spacing-8);border-radius:var(--radius-xl);box-shadow:var(--shadow-2xl);min-width:400px;max-width:calc(100vw - var(--spacing-8))}.modal-content h3{margin-top:0;margin-bottom:var(--spacing-6);text-align:center;color:var(--text-light);font-size:var(--text-xl);font-weight:var(--font-semibold)}.modal-content input{width:100%;padding:var(--spacing-3);font-size:var(--text-lg);background:#ffffff1a;border:2px solid rgba(255,255,255,.2);border-radius:var(--radius-md);color:var(--text-light);margin-bottom:var(--spacing-6);transition:var(--transition-fast)}.modal-content input:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 var(--focus-ring-width) var(--focus-ring-color)}.modal-content input::placeholder{color:#ffffff80}.modal-content button{width:100%;padding:var(--btn-padding-y) var(--btn-padding-x);font-size:var(--text-lg);font-weight:var(--font-semibold);background:var(--btn-primary-bg);color:var(--text-light);border:none;border-radius:var(--btn-radius);cursor:pointer;transition:var(--transition-normal)}.modal-content button:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--btn-primary-shadow-hover)}.modal-content button:focus-visible{outline:none;box-shadow:0 0 0 var(--focus-ring-offset) var(--bg-dark),0 0 0 calc(var(--focus-ring-offset) + var(--focus-ring-width)) var(--focus-ring-color)}.modal-content button:disabled{opacity:.5;cursor:not-allowed}.menu-section{margin-bottom:var(--spacing-10);max-width:1200px;margin-left:auto;margin-right:auto}.menu-section h2{font-size:var(--text-xl);font-weight:var(--font-semibold);margin-bottom:var(--spacing-4);color:var(--text-muted);text-transform:uppercase;letter-spacing:var(--tracking-wide)}.mode-buttons{display:flex;gap:var(--spacing-4);justify-content:center;flex-wrap:wrap}.mode-btn{flex:1;min-width:200px;max-width:300px;padding:var(--spacing-6);background:#ffffff0d;border:2px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);color:var(--text-light);cursor:pointer;transition:var(--transition-normal);text-align:center}.mode-btn:hover{background:#ffffff1a;border-color:var(--primary-light);transform:translateY(-2px)}.mode-btn:focus-visible{outline:none;box-shadow:0 0 0 var(--focus-ring-offset) var(--bg-dark),0 0 0 calc(var(--focus-ring-offset) + var(--focus-ring-width)) var(--focus-ring-color)}.mode-btn.active{background:linear-gradient(135deg,#ff00ff4d,#8000ff4d);border-color:var(--primary);box-shadow:0 0 20px #ff00ff4d}.mode-icon{font-size:var(--text-3xl);margin-bottom:var(--spacing-2)}.mode-title{font-size:var(--text-lg);font-weight:var(--font-semibold);margin-bottom:var(--spacing-1)}.mode-desc{font-size:var(--text-sm);color:#ffffffb3}.count-buttons{display:flex;gap:var(--spacing-4);justify-content:center;flex-wrap:wrap}.count-btn{padding:var(--spacing-6);min-width:150px;background:#ffffff0d;border:2px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);color:var(--text-light);cursor:pointer;transition:var(--transition-normal);text-align:center}.count-btn:hover{background:#ffffff1a;border-color:var(--primary-light);transform:translateY(-2px)}.count-btn:focus-visible{outline:none;box-shadow:0 0 0 var(--focus-ring-offset) var(--bg-dark),0 0 0 calc(var(--focus-ring-offset) + var(--focus-ring-width)) var(--focus-ring-color)}.count-btn.active{background:linear-gradient(135deg,#ff00ff4d,#8000ff4d);border-color:var(--primary);box-shadow:0 0 20px #ff00ff4d}.count-number{font-size:var(--text-4xl);font-weight:var(--font-bold);margin-bottom:var(--spacing-2)}.count-desc{font-size:var(--text-sm);color:#ffffffb3;line-height:var(--leading-tight)}.difficulty-buttons{display:flex;gap:var(--spacing-4);justify-content:center;flex-wrap:wrap}.diff-btn{padding:var(--spacing-6);min-width:150px;background:#ffffff0d;border:2px solid rgba(255,255,255,.1);border-radius:var(--radius-lg);color:var(--text-light);cursor:pointer;transition:var(--transition-normal);text-align:center;position:relative}.diff-btn:hover:not(:disabled){background:#ffffff1a;transform:translateY(-2px)}.diff-btn:focus-visible{outline:none;box-shadow:0 0 0 var(--focus-ring-offset) var(--bg-dark),0 0 0 calc(var(--focus-ring-offset) + var(--focus-ring-width)) var(--focus-ring-color)}.diff-btn.active{background:linear-gradient(135deg,#ff00ff4d,#8000ff4d);border-color:var(--primary);box-shadow:0 0 20px #ff00ff4d}.diff-btn:nth-child(1):hover{border-color:var(--success)}.diff-btn:nth-child(2):hover{border-color:var(--warning)}.diff-btn:nth-child(3):hover{border-color:var(--secondary)}.diff-btn.nightmare:hover{border-color:var(--danger)}.diff-btn:disabled{opacity:.5;cursor:not-allowed}.diff-title{font-size:var(--text-xl);font-weight:var(--font-semibold);margin-bottom:var(--spacing-1)}.diff-desc{font-size:var(--text-sm);color:#ffffffb3}.coming-soon{position:absolute;top:calc(-1 * var(--spacing-2));right:calc(-1 * var(--spacing-2));background:var(--danger);color:var(--text-light);padding:var(--spacing-1) var(--spacing-2);border-radius:var(--radius-sm);font-size:var(--text-xs);font-weight:var(--font-bold)}.menu-actions{display:flex;gap:var(--spacing-4);justify-content:center;margin:var(--spacing-12) auto;max-width:800px}.action-btn{flex:1;padding:var(--spacing-6) var(--spacing-8);font-size:var(--text-xl);font-weight:var(--font-semibold);border:none;border-radius:var(--radius-lg);color:var(--text-light);cursor:pointer;transition:var(--transition-normal);text-align:center;position:relative}.action-btn:focus-visible{outline:none;box-shadow:0 0 0 var(--focus-ring-offset) var(--bg-dark),0 0 0 calc(var(--focus-ring-offset) + var(--focus-ring-width)) var(--focus-ring-color)}.start-btn{background:var(--btn-primary-bg);box-shadow:var(--btn-primary-shadow)}.start-btn:hover{transform:translateY(-3px);box-shadow:var(--btn-primary-shadow-hover)}.load-btn{background:var(--btn-info-bg);box-shadow:var(--btn-info-shadow)}.load-btn:hover:not(:disabled){transform:translateY(-3px);box-shadow:var(--btn-info-shadow-hover)}.tutorial-btn{background:linear-gradient(135deg,#7c3aed,#4f46e5);box-shadow:0 4px 20px #7c3aed66}.tutorial-btn:hover{transform:translateY(-3px);box-shadow:0 8px 28px #7c3aed8c}.btn-subtitle{display:block;font-size:var(--text-sm);font-weight:var(--font-normal);margin-top:var(--spacing-1);opacity:.9}.menu-footer{display:flex;gap:var(--spacing-4);justify-content:center;margin-top:var(--spacing-12);padding-top:var(--spacing-8);border-top:1px solid rgba(255,255,255,.1)}.footer-btn{padding:var(--spacing-3) var(--spacing-6);background:#ffffff0d;border:1px solid rgba(255,255,255,.2);border-radius:var(--radius-md);color:#fffc;cursor:pointer;transition:var(--transition-normal);font-size:var(--text-base)}.footer-btn:hover{background:#ffffff1a;color:var(--text-light);border-color:#fff6}.footer-btn:focus-visible{outline:none;box-shadow:0 0 0 var(--focus-ring-offset) var(--bg-dark),0 0 0 calc(var(--focus-ring-offset) + var(--focus-ring-width)) var(--focus-ring-color)}.test-mechanics-btn{background:linear-gradient(135deg,#00d4ff33,#0f83);border-color:#00d4ff80;color:#00d4ff}.test-mechanics-btn:hover{background:linear-gradient(135deg,#00d4ff4d,#00ff884d);border-color:#00d4ff;color:#fff;box-shadow:0 0 15px #00d4ff4d}.version-info{position:fixed;bottom:var(--spacing-8);right:var(--spacing-8);text-align:right;z-index:var(--z-sticky)}.version-badge{background:#ff0000e6;color:var(--text-light);padding:var(--spacing-3) var(--spacing-4);border-radius:var(--radius-md);font-size:var(--text-sm);font-weight:var(--font-semibold);box-shadow:var(--shadow-lg)}.version-date{font-size:var(--text-xs);opacity:.9;margin-top:var(--spacing-1)}.version-warning{font-size:var(--text-xs);color:var(--warning);margin-top:var(--spacing-1);animation:pulse 2s infinite}@keyframes 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h2{font-size:var(--text-lg)}.mode-btn,.count-btn,.diff-btn{padding:var(--spacing-4);min-width:auto}.mode-icon{font-size:var(--text-2xl)}.mode-title,.diff-title{font-size:var(--text-base)}.count-number{font-size:var(--text-3xl)}.action-btn{padding:var(--spacing-4) var(--spacing-5);font-size:var(--text-base)}.btn-subtitle{font-size:var(--text-xs)}.menu-footer{gap:var(--spacing-2);padding:0 var(--spacing-2)}.footer-btn{padding:var(--spacing-2) var(--spacing-3);font-size:var(--text-xs);flex:1;min-width:0;text-align:center}.version-info{position:relative;bottom:auto;right:auto;margin-top:var(--spacing-6);text-align:center}}@media(max-width:374px){.game-title{font-size:var(--text-2xl)}.menu-footer{flex-direction:column;align-items:stretch}.footer-btn{width:100%}}:root{--bg-primary: rgb(17, 24, 39);--bg-secondary: rgb(31, 41, 55);--bg-tertiary: rgb(55, 65, 81);--text-primary: rgb(255, 255, 255);--text-secondary: rgb(209, 213, 219);--accent-primary: rgb(147, 51, 234);--accent-secondary: rgb(236, 72, 153);--board-bg: rgb(31, 41, 55);--cell-neutral: rgb(55, 65, 81);--cell-hover: rgb(75, 85, 99);--cell-border: #333;--side-0: #FF0000;--side-1: #0000FF;--side-2: #008000;--side-3: #FFFF00;--side-4: #800080;--side-5: #FFA500;--side-6: #FFC0CB;--side-7: #40E0D0;--side-8: #8B4513;--side-9: #C0C0C0;--side-0-border: #CC0000;--side-1-border: #0000CC;--side-2-border: #006600;--side-3-border: #333333;--side-4-border: #660066;--side-5-border: #CC8400;--side-6-border: #333333;--side-7-border: #30B0A0;--side-8-border: #6B3410;--side-9-border: #7A7A7A;--active-field: #4CAF50;--available-move: #FFEB3B;--selected: #FF9800;--danger-low: rgba(255, 193, 7, .3);--danger-medium: rgba(255, 152, 0, .5);--danger-high: rgba(255, 87, 34, .7);--danger-critical: rgba(244, 67, 54, .9);--success: #4CAF50;--warning: #FFC107;--error: #F44336;--info: #2196F3;--spacing-xs: 2px;--spacing-sm: 4px;--spacing-md: 8px;--spacing-lg: 16px;--spacing-xl: 24px;--spacing-2xl: 32px;--radius-sm: 3px;--radius-md: 8px;--radius-lg: 15px;--shadow-sm: 0 2px 4px rgba(0, 0, 0, .1);--shadow-md: 0 4px 15px rgba(0, 0, 0, .2);--shadow-lg: 0 10px 30px rgba(0, 0, 0, .3);--shadow-glow: 0 0 20px;--transition-fast: .2s ease;--transition-normal: .3s ease;--transition-slow: .5s ease;--z-base: 1;--z-hover: 10;--z-selected: 20;--z-dropdown: 100;--z-sticky: 200;--z-overlay: 500;--z-modal: 1000;--z-popover: 1500;--z-toast: 2000;--font-sans: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-mono: "SF Mono", "Fira Code", "Fira Mono", Consolas, monospace;--text-xs: .75rem;--text-sm: .875rem;--text-base: 1rem;--text-lg: 1.125rem;--text-xl: 1.25rem;--text-2xl: 1.5rem;--text-3xl: 1.875rem;--text-4xl: 2.25rem;--text-5xl: 3rem;--text-6xl: 4rem;--font-normal: 400;--font-medium: 500;--font-semibold: 600;--font-bold: 700;--font-extrabold: 800;--leading-none: 1;--leading-tight: 1.25;--leading-snug: 1.375;--leading-normal: 1.5;--leading-relaxed: 1.625;--leading-loose: 2;--tracking-tighter: -.05em;--tracking-tight: -.025em;--tracking-normal: 0;--tracking-wide: .025em;--tracking-wider: .05em;--tracking-widest: .1em;--btn-padding-y: .75rem;--btn-padding-x: 1.5rem;--btn-padding-y-sm: .5rem;--btn-padding-x-sm: 1rem;--btn-padding-y-lg: 1rem;--btn-padding-x-lg: 2rem;--btn-radius: var(--radius-md);--btn-font-weight: var(--font-semibold);--btn-transition: all var(--transition-fast);--btn-primary-bg: linear-gradient(135deg, #ff00ff 0%, #8800ff 100%);--btn-primary-hover: linear-gradient(135deg, #ff33ff 0%, #aa33ff 100%);--btn-primary-shadow: 0 10px 30px rgba(255, 0, 255, .3);--btn-primary-shadow-hover: 0 15px 40px rgba(255, 0, 255, .4);--btn-secondary-bg: transparent;--btn-secondary-border: rgba(255, 255, 255, .3);--btn-danger-bg: linear-gradient(135deg, #f44336 0%, #e91e63 100%);--btn-success-bg: linear-gradient(135deg, #4caf50 0%, #8bc34a 100%);--btn-info-bg: linear-gradient(135deg, #00ccff 0%, #0088ff 100%);--btn-info-shadow: 0 10px 30px rgba(0, 204, 255, .3);--btn-info-shadow-hover: 0 15px 40px rgba(0, 204, 255, .4);--focus-ring-color: rgba(147, 51, 234, .5);--focus-ring-width: 3px;--focus-ring-offset: 2px;--spacing-0: 0;--spacing-1: .25rem;--spacing-2: .5rem;--spacing-3: .75rem;--spacing-4: 1rem;--spacing-5: 1.25rem;--spacing-6: 1.5rem;--spacing-7: 1.75rem;--spacing-8: 2rem;--spacing-9: 2.25rem;--spacing-10: 2.5rem;--spacing-11: 2.75rem;--spacing-12: 3rem;--spacing-14: 3.5rem;--spacing-16: 4rem;--spacing-20: 5rem;--spacing-24: 6rem;--radius-none: 0;--radius-xs: 2px;--radius-xl: 16px;--radius-2xl: 24px;--radius-full: 9999px;--shadow-xs: 0 1px 2px rgba(0, 0, 0, .05);--shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, .1), 0 10px 10px -5px rgba(0, 0, 0, .04);--shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, .25);--primary: #ff00ff;--primary-light: rgba(255, 0, 255, .5);--secondary: #ff6600;--danger: #ff0000;--text-light: #ffffff;--text-muted: #ccccff;--bg-dark: #1a0033;--overlay-bg: rgba(0, 0, 0, .8);--gradient-bg: linear-gradient(135deg, #1a0033 0%, #330066 50%, #4d0099 100%);--gradient-card: linear-gradient(135deg, #2a0052 0%, #440088 100%);--font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif}@keyframes glow-pulse{0%,to{box-shadow:0 0 5px var(--accent-primary),0 0 10px var(--accent-primary)}50%{box-shadow:0 0 20px var(--accent-primary),0 0 30px var(--accent-primary)}}@keyframes knight-move{0%{transform:translate(0)}25%{transform:translate(-10px,-20px) rotate(-5deg)}50%{transform:translate(10px,-30px) rotate(5deg)}75%{transform:translate(-5px,-10px) rotate(-3deg)}to{transform:translate(0) rotate(0)}}@keyframes capture-effect{0%{transform:scale(1);opacity:1}50%{transform:scale(1.5);opacity:.5}to{transform:scale(2);opacity:0}}@keyframes bounce-in{0%{transform:scale(.3);opacity:0}50%{transform:scale(1.05)}70%{transform:scale(.9)}to{transform:scale(1);opacity:1}}@keyframes slide-in{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}@keyframes pulse{0%,to{transform:scale(1)}50%{transform:scale(1.05)}}@keyframes danger-pulse{0%,to{box-shadow:inset 0 0 20px var(--danger-critical)}50%{box-shadow:inset 0 0 30px var(--danger-critical)}}.game-board{background:var(--board-bg);border-radius:var(--radius-md);padding:var(--spacing-lg);box-shadow:var(--shadow-md);border:2px solid var(--cell-border)}.board-cell{width:clamp(35px,8vw,60px);height:clamp(35px,8vw,60px);border:2px solid var(--cell-border);display:flex;align-items:center;justify-content:center;position:relative;cursor:pointer;transition:all var(--transition-normal);background:var(--cell-neutral);border-radius:var(--radius-sm);font-size:clamp(14px,3vw,24px);font-weight:700}.board-cell:hover{border-color:var(--active-field);transform:scale(1.08);z-index:var(--z-hover);box-shadow:0 4px 12px #4caf504d}.board-cell.side-0{background-color:var(--side-0)!important;border-color:var(--side-0-border)!important}.board-cell.side-1{background-color:var(--side-1)!important;border-color:var(--side-1-border)!important}.board-cell.side-2{background-color:var(--side-2)!important;border-color:var(--side-2-border)!important}.board-cell.side-3{background-color:var(--side-3)!important;border-color:var(--side-3-border)!important;border-width:3px!important}.board-cell.side-4{background-color:var(--side-4)!important;border-color:var(--side-4-border)!important}.board-cell.side-5{background-color:var(--side-5)!important;border-color:var(--side-5-border)!important}.board-cell.side-6{background-color:var(--side-6)!important;border-color:var(--side-6-border)!important;border-width:3px!important}.board-cell.side-7{background-color:var(--side-7)!important;border-color:var(--side-7-border)!important}.board-cell.side-8{background-color:var(--side-8)!important;border-color:var(--side-8-border)!important}.board-cell.side-9{background-color:var(--side-9)!important;border-color:var(--side-9-border)!important;border-width:3px!important}.piece{font-size:44px;font-weight:700;text-shadow:0 0 3px rgba(255,255,255,1),0 0 6px rgba(255,255,255,.9),2px 2px 4px rgba(0,0,0,1),-1px -1px 4px rgba(0,0,0,.8);filter:drop-shadow(0 0 2px rgba(255,255,255,.9));color:#fff;animation:pulse 2s ease-in-out infinite}.piece-side-3,.piece-side-6,.piece-side-7,.piece-side-9{color:#000;text-shadow:0 0 3px rgba(255,255,255,1),1px 1px 2px rgba(255,255,255,.8);-webkit-text-stroke:1px rgba(255,255,255,.8)}.active-field{border:3px solid var(--active-field)!important;box-shadow:0 0 15px #4caf50cc,inset 0 0 10px #4caf5033;animation:glow-pulse 1.5s infinite}.available-move{border:2px solid var(--available-move)!important;background:#ffeb3b33!important;cursor:pointer}.available-move:hover{background:#ffeb3b66!important;transform:scale(1.1)}.selected{border:3px solid var(--selected)!important;background:#ff98004d!important;box-shadow:0 0 20px #ff9800cc;animation:pulse 1s infinite}.danger-low{box-shadow:inset 0 0 10px var(--danger-low)}.danger-medium{box-shadow:inset 0 0 15px var(--danger-medium)}.danger-high{box-shadow:inset 0 0 20px var(--danger-high);animation:danger-pulse 1s infinite}.danger-critical{box-shadow:inset 0 0 25px var(--danger-critical);animation:danger-pulse .5s infinite}.button{background:var(--accent-primary);color:var(--text-primary);border:none;padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--radius-md);cursor:pointer;transition:all var(--transition-fast);font-weight:700}.button:hover{background:var(--accent-secondary);transform:translateY(-2px);box-shadow:var(--shadow-md)}.modal{background:var(--bg-secondary);border-radius:var(--radius-lg);padding:var(--spacing-2xl);box-shadow:var(--shadow-lg);color:var(--text-primary);animation:slide-in .3s ease}.overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#000c;display:flex;align-items:center;justify-content:center;z-index:var(--z-overlay);animation:fade-in .3s ease}[data-theme=dark]{--bg-primary: rgb(0, 0, 0);--bg-secondary: rgb(23, 23, 23);--bg-tertiary: rgb(38, 38, 38);--text-primary: rgb(245, 245, 245);--text-secondary: rgb(163, 163, 163);--board-bg: rgb(23, 23, 23);--cell-neutral: rgb(38, 38, 38);--cell-hover: rgb(64, 64, 64)}[data-theme=neon]{--bg-primary: rgb(13, 13, 23);--bg-secondary: rgb(23, 23, 43);--bg-tertiary: rgb(33, 33, 63);--accent-primary: rgb(0, 255, 255);--accent-secondary: rgb(255, 0, 255);--board-bg: rgb(23, 23, 43);--cell-neutral: rgb(33, 33, 63)}[data-theme=neon] .game-board{box-shadow:0 0 50px #00ffff4d,inset 0 0 50px #ff00ff1a}[data-theme=neon] .piece{filter:drop-shadow(0 0 10px currentColor)}[data-theme=forest]{--bg-primary: rgb(28, 39, 33);--bg-secondary: rgb(38, 52, 44);--bg-tertiary: rgb(48, 65, 55);--text-primary: rgb(240, 253, 244);--text-secondary: rgb(187, 247, 208);--accent-primary: rgb(34, 197, 94);--accent-secondary: rgb(251, 146, 60);--board-bg: rgb(38, 52, 44);--cell-neutral: rgb(48, 65, 55)}[data-theme=forest] .board-cell{border-radius:4px}[data-theme=forest] .board-cell:hover{box-shadow:0 2px 8px #22c55e4d}@media(max-width:768px){.board-cell{width:45px;height:45px}.piece{font-size:34px}}@media(max-width:480px){.board-cell{width:38px;height:38px}.piece{font-size:28px}}@media(max-width:374px){.board-cell{width:32px;height:32px;border-width:1px}.piece{font-size:20px}}.text-primary{color:var(--text-primary)}.text-secondary{color:var(--text-secondary)}.bg-primary{background-color:var(--bg-primary)}.bg-secondary{background-color:var(--bg-secondary)}.bg-tertiary{background-color:var(--bg-tertiary)}.shadow-sm{box-shadow:var(--shadow-sm)}.shadow-md{box-shadow:var(--shadow-md)}.shadow-lg{box-shadow:var(--shadow-lg)}.rounded-sm{border-radius:var(--radius-sm)}.rounded-md{border-radius:var(--radius-md)}.rounded-lg{border-radius:var(--radius-lg)}.transition-fast{transition:all var(--transition-fast)}.transition-normal{transition:all var(--transition-normal)}.transition-slow{transition:all var(--transition-slow)}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--btn-padding-y) var(--btn-padding-x);font-family:var(--font-sans);font-size:var(--text-base);font-weight:var(--btn-font-weight);line-height:var(--leading-tight);text-decoration:none;border:2px solid transparent;border-radius:var(--btn-radius);cursor:pointer;transition:var(--btn-transition);-webkit-tap-highlight-color:transparent;-webkit-user-select:none;user-select:none}.btn:disabled{opacity:.5;cursor:not-allowed;pointer-events:none}.btn-primary{background:var(--btn-primary-bg);color:var(--text-primary);border-color:transparent}.btn-primary:hover:not(:disabled){background:var(--btn-primary-hover);transform:translateY(-2px);box-shadow:var(--shadow-md)}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-secondary{background:var(--btn-secondary-bg);color:var(--text-primary);border-color:var(--btn-secondary-border)}.btn-secondary:hover:not(:disabled){background:#ffffff1a;border-color:#ffffff80}.btn-danger{background:var(--btn-danger-bg);color:var(--text-primary)}.btn-danger:hover:not(:disabled){filter:brightness(1.1);transform:translateY(-2px);box-shadow:var(--shadow-md)}.btn-success{background:var(--btn-success-bg);color:var(--text-primary)}.btn-success:hover:not(:disabled){filter:brightness(1.1);transform:translateY(-2px);box-shadow:var(--shadow-md)}.btn-ghost{background:transparent;color:var(--text-secondary);border-color:transparent}.btn-ghost:hover:not(:disabled){background:#ffffff1a;color:var(--text-primary)}.btn-sm{padding:var(--btn-padding-y-sm) var(--btn-padding-x-sm);font-size:var(--text-sm)}.btn-lg{padding:var(--btn-padding-y-lg) var(--btn-padding-x-lg);font-size:var(--text-lg)}.btn-icon{padding:var(--spacing-md);min-width:44px;min-height:44px}.btn-icon-sm{padding:var(--spacing-sm);min-width:36px;min-height:36px}*:focus{outline:none}*:focus-visible{outline:var(--focus-ring-width) solid var(--focus-ring-color);outline-offset:var(--focus-ring-offset)}.btn:focus-visible{outline:var(--focus-ring-width) solid var(--focus-ring-color);outline-offset:var(--focus-ring-offset);box-shadow:0 0 0 calc(var(--focus-ring-width) + var(--focus-ring-offset)) var(--focus-ring-color)}input:focus-visible,textarea:focus-visible,select:focus-visible{outline:var(--focus-ring-width) solid var(--focus-ring-color);outline-offset:0;border-color:var(--accent-primary)}button:focus:not(:focus-visible),a:focus:not(:focus-visible),input:focus:not(:focus-visible){outline:none}@media(forced-colors:active){.btn{border:2px solid currentColor}*:focus-visible{outline:3px solid Highlight;outline-offset:2px}}.text-xs{font-size:var(--text-xs)}.text-sm{font-size:var(--text-sm)}.text-base{font-size:var(--text-base)}.text-lg{font-size:var(--text-lg)}.text-xl{font-size:var(--text-xl)}.text-2xl{font-size:var(--text-2xl)}.text-3xl{font-size:var(--text-3xl)}.text-4xl{font-size:var(--text-4xl)}.text-5xl{font-size:var(--text-5xl)}.font-normal{font-weight:var(--font-normal)}.font-medium{font-weight:var(--font-medium)}.font-semibold{font-weight:var(--font-semibold)}.font-bold{font-weight:var(--font-bold)}.font-extrabold{font-weight:var(--font-extrabold)}.leading-none{line-height:var(--leading-none)}.leading-tight{line-height:var(--leading-tight)}.leading-normal{line-height:var(--leading-normal)}.leading-relaxed{line-height:var(--leading-relaxed)}.gap-xs{gap:var(--spacing-xs)}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}.gap-xl{gap:var(--spacing-xl)}.gap-2xl{gap:var(--spacing-2xl)}.p-xs{padding:var(--spacing-xs)}.p-sm{padding:var(--spacing-sm)}.p-md{padding:var(--spacing-md)}.p-lg{padding:var(--spacing-lg)}.p-xl{padding:var(--spacing-xl)}.p-2xl{padding:var(--spacing-2xl)}.m-xs{margin:var(--spacing-xs)}.m-sm{margin:var(--spacing-sm)}.m-md{margin:var(--spacing-md)}.m-lg{margin:var(--spacing-lg)}.m-xl{margin:var(--spacing-xl)}.m-2xl{margin:var(--spacing-2xl)}.flex{display:flex}.flex-col{flex-direction:column}.flex-row{flex-direction:row}.flex-wrap{flex-wrap:wrap}.flex-1{flex:1}.items-center{align-items:center}.items-start{align-items:flex-start}.items-end{align-items:flex-end}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.justify-end{justify-content:flex-end}.grid{display:grid}.grid-cols-2{grid-template-columns:repeat(2,1fr)}.grid-cols-3{grid-template-columns:repeat(3,1fr)}.grid-cols-4{grid-template-columns:repeat(4,1fr)}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:var(--overlay-bg);display:flex;justify-content:center;align-items:center;z-index:var(--z-modal);animation:fadeIn .2s ease-in;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.modal-container{background:var(--gradient-card);border-radius:var(--radius-xl);max-width:700px;max-height:85vh;width:90%;display:flex;flex-direction:column;box-shadow:var(--shadow-2xl);animation:slideUp .3s ease-out;border:2px solid rgba(255,255,255,.1)}@keyframes slideUp{0%{transform:translateY(30px);opacity:0}to{transform:translateY(0);opacity:1}}.modal-header{padding:var(--spacing-6) var(--spacing-8);border-bottom:2px solid rgba(255,255,255,.1);display:flex;justify-content:space-between;align-items:center}.modal-header h2{margin:0;color:var(--text-light);font-size:var(--text-3xl);font-weight:var(--font-bold)}.close-btn{background:#ffffff1a;border:none;color:var(--text-light);font-size:var(--text-2xl);width:44px;height:44px;border-radius:var(--radius-full);cursor:pointer;transition:var(--transition-fast);display:flex;align-items:center;justify-content:center}.close-btn:hover{background:#fff3;transform:scale(1.1)}.close-btn:focus-visible{outline:none;box-shadow:0 0 0 var(--focus-ring-width) var(--focus-ring-color)}.modal-content{padding:var(--spacing-8);overflow-y:auto;flex:1}.modal-content::-webkit-scrollbar{width:8px}.modal-content::-webkit-scrollbar-track{background:#ffffff0d}.modal-content::-webkit-scrollbar-thumb{background:#fff3;border-radius:var(--radius-sm)}.modal-footer{padding:var(--spacing-5) var(--spacing-8);border-top:2px solid rgba(255,255,255,.1);display:flex;justify-content:flex-end;gap:var(--spacing-4)}.btn-primary,.btn-secondary,.btn-small{padding:var(--spacing-3) var(--spacing-8);font-size:var(--text-base);font-weight:var(--font-semibold);border:none;border-radius:var(--radius-md);cursor:pointer;transition:var(--transition-fast)}.btn-primary{background:var(--btn-primary-bg);color:var(--text-light)}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--btn-primary-shadow)}.btn-primary:focus-visible{outline:none;box-shadow:0 0 0 var(--focus-ring-width) var(--focus-ring-color)}.btn-secondary{background:linear-gradient(135deg,#434343,#000);color:var(--text-light)}.btn-secondary:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.btn-secondary:focus-visible{outline:none;box-shadow:0 0 0 var(--focus-ring-width) var(--focus-ring-color)}.btn-small{padding:var(--spacing-2) var(--spacing-4);font-size:var(--text-sm)}.rules-section{margin-bottom:var(--spacing-8)}.rules-section h3{color:var(--warning);font-size:var(--text-xl);font-weight:var(--font-semibold);margin-bottom:var(--spacing-4)}.rules-section p,.rules-section li{color:#ffffffe6;line-height:var(--leading-relaxed);margin-bottom:var(--spacing-3)}.rules-section ul{padding-left:var(--spacing-6)}.rules-section li{margin-bottom:var(--spacing-2)}.rules-section strong{color:var(--text-light);font-weight:var(--font-semibold)}.settings-section{margin-bottom:var(--spacing-8)}.settings-section h3{color:var(--warning);font-size:var(--text-xl);font-weight:var(--font-semibold);margin-bottom:var(--spacing-5);border-bottom:2px solid rgba(255,215,0,.2);padding-bottom:var(--spacing-3)}.setting-item{margin-bottom:var(--spacing-5)}.setting-item.indent{margin-left:var(--spacing-8)}.setting-label{color:#ffffffe6;font-size:var(--text-base);display:flex;align-items:center;gap:var(--spacing-3);margin-bottom:var(--spacing-3);cursor:pointer}.setting-label input[type=checkbox]{width:20px;height:20px;cursor:pointer;accent-color:var(--primary)}.slider-container{display:flex;align-items:center;gap:var(--spacing-4)}.volume-slider{flex:1;height:6px;background:#ffffff1a;border-radius:var(--radius-sm);outline:none;-webkit-appearance:none}.volume-slider::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:18px;height:18px;background:var(--primary);cursor:pointer;border-radius:var(--radius-full)}.volume-slider::-moz-range-thumb{width:18px;height:18px;background:var(--primary);cursor:pointer;border-radius:var(--radius-full);border:none}.volume-slider:focus-visible{outline:none;box-shadow:0 0 0 var(--focus-ring-width) var(--focus-ring-color)}.volume-value{color:var(--text-light);font-weight:var(--font-semibold);min-width:45px}.button-group{display:flex;gap:var(--spacing-3)}.option-btn{flex:1;padding:var(--spacing-3) var(--spacing-5);background:#ffffff0d;border:2px solid rgba(255,255,255,.1);color:#ffffffb3;border-radius:var(--radius-md);cursor:pointer;transition:var(--transition-fast);font-weight:var(--font-semibold)}.option-btn:hover{background:#ffffff1a;border-color:#fff3}.option-btn:focus-visible{outline:none;box-shadow:0 0 0 var(--focus-ring-width) var(--focus-ring-color)}.option-btn.active{background:var(--btn-primary-bg);border-color:var(--primary);color:var(--text-light)}.setting-description{color:#fff9;font-size:var(--text-sm);margin-top:var(--spacing-1);margin-left:var(--spacing-8)}.profile-section{margin-bottom:var(--spacing-8)}.profile-section 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