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0}.head-to-head{padding:16px;overflow-x:hidden;background:#fff}.friend-selector-wrapper{margin-bottom:24px}.friend-selector-label{display:block;margin-bottom:8px;font-size:14px;font-weight:600;color:#1f2937}.friend-selector{width:100%;padding:12px 16px;font-size:16px;border:2px solid #e5e7eb;border-radius:8px;background:#fff;color:#1f2937;cursor:pointer;transition:all .2s ease}.friend-selector:hover{border-color:#d1d5db}.friend-selector:focus{outline:none;border-color:#10b981;box-shadow:0 0 0 3px #10b9811a}.h2h-display{background:#f9fafb;border-radius:12px;padding:20px;overflow-x:hidden}.h2h-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 20px;color:#6b7280}.h2h-empty{text-align:center;padding:40px 20px}.h2h-empty-icon{font-size:48px;margin:0 0 16px}.h2h-empty-text{margin:0 0 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#667eea66}.logout-button:active:not(:disabled){transform:translateY(0)}.logout-button:disabled{opacity:.6;cursor:not-allowed}.welcome-section{background:#ffffff26;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.25);border-radius:12px;padding:3rem 2rem;max-width:800px;margin:0 auto;box-shadow:0 4px 12px #00000026}.welcome-title{font-size:3.5rem;font-weight:900;color:#fff;margin:0 0 1rem;text-align:center;letter-spacing:1px;text-shadow:0 2px 10px rgba(0,0,0,.2)}.welcome-message{text-align:center;font-size:1.2rem;color:#fffffff2;margin-bottom:2rem}.room-actions{background:#ffffff26;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.25);border-radius:12px;padding:2rem}.room-actions h3{margin:0 0 1.5rem;color:#fff;font-size:1.5rem;text-align:center;font-weight:700;text-shadow:0 2px 4px 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#f5576c66}.reenter-button{background:linear-gradient(135deg,#4caf50,#2e7d32);border-color:#4caf50}.reenter-button:hover{background:linear-gradient(135deg,#45a049,#27632a);box-shadow:0 8px 20px #4caf5066}.button-icon{font-size:2.5rem;line-height:1}.button-text{display:flex;flex-direction:column;gap:.25rem;flex:1;text-align:left}.action-button .button-text strong{font-size:1.1rem;color:#fff;display:block;text-shadow:0 1px 2px rgba(0,0,0,.2)}.action-button .button-text small{font-size:.85rem;color:#ffffffe6;display:block;text-shadow:0 1px 2px rgba(0,0,0,.1)}.coming-soon{background:#f8f9ff;border-left:4px solid #667eea;padding:1.5rem;border-radius:8px;margin-bottom:2rem}.coming-soon h3{margin:0 0 1rem;color:#333;font-size:1.3rem}.coming-soon ul{list-style:none;padding:0;margin:0}.coming-soon li{padding:.5rem 0;font-size:1.1rem;color:#555}.status-note{background:#f0f9ff;border:1px solid #bae6fd;border-radius:8px;padding:1.5rem}.status-note p{margin:.5rem 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solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin .8s linear infinite}.join-back-button{width:100%;padding:16px;font-size:18px;font-weight:600;color:#fff;background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:12px;cursor:pointer;transition:transform .2s,box-shadow .2s;display:flex;align-items:center;justify-content:center;gap:10px;margin-top:0}.join-back-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 20px #667eea66}.join-back-button:active:not(:disabled){transform:translateY(0)}.join-back-button:disabled{opacity:.6;cursor:not-allowed}.info-section{margin-top:30px;padding-top:30px;border-top:1px solid #eee}.info-section h3{margin:0 0 15px;color:#333;font-size:18px}.help-list{margin:0;padding-left:20px;color:#666;font-size:14px;line-height:1.8}.help-list li{margin-bottom:8px}@media (max-width: 600px){.join-room-card{padding:30px 20px}.join-room-card h2{font-size:24px}.room-code-input{font-size:24px;letter-spacing:3px}.join-room-button{padding:14px;font-size:16px}}.game-selection{margin:25px 0}.selection-header{text-align:center;margin-bottom:20px}.selection-header h3{margin:0 0 8px;color:#fff;font-size:22px}.selection-subtitle{margin:0;color:#666;font-size:14px;line-height:1.5}.games-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:15px;margin-bottom:20px}.game-card{background:#fff;border:3px solid #ddd;border-radius:12px;padding:15px;cursor:pointer;transition:all .3s ease;text-align:left;position:relative;overflow:hidden}.game-card:hover:not(:disabled){transform:translateY(-4px);box-shadow:0 8px 20px #00000026}.game-card:active:not(:disabled){transform:translateY(-2px)}.game-card:disabled{opacity:.7;cursor:not-allowed}.game-card.my-selection{border-color:#667eea;background:#fff;box-shadow:0 4px 12px #667eea4d,0 0 0 1px #667eea 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h3{font-size:18px}.selection-subtitle{font-size:13px}.game-icon{font-size:24px}.game-meta{font-size:11px}}.tictactoe-board{display:grid;grid-template-columns:repeat(3,1fr);gap:8px;width:100%;max-width:420px;margin:0 auto 2rem;padding:1rem;background:var(--color-bg-secondary);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);box-sizing:border-box}.tictactoe-cell{aspect-ratio:1 / 1;background:var(--color-card-bg);border:2px solid var(--color-border-primary);border-radius:var(--radius-md);font-size:2rem;font-weight:700;cursor:pointer;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;padding:0;box-sizing:border-box;contain:layout style 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(max-width: 768px){.tictactoe-container{padding:1rem}.game-header{flex-direction:column;text-align:center}.game-title{font-size:1.5rem}.players-info{flex-direction:column;padding:1rem}.vs-divider{transform:none;margin:.5rem 0}.player-card{width:100%}.game-over{padding:1.5rem}.result-icon{font-size:3rem}.result-message h2{font-size:1.5rem}}.connect4-container{min-height:100vh;padding:2rem;background:linear-gradient(135deg,#ff9800,#f57c00)}.game-header{max-width:700px;margin:0 auto 2rem;display:flex;align-items:center;gap:1rem}.back-button{background:#fff3;color:#fff;border:2px solid rgba(255,255,255,.3);padding:.6rem 1.2rem;border-radius:var(--radius-md);cursor:pointer;transition:all var(--animation-duration) var(--animation-easing);font-weight:600}.game-title{flex:1;text-align:center;color:#fff;margin:0;font-size:2rem;text-shadow:0 2px 8px rgba(0,0,0,.2)}.players-info{max-width:700px;margin:0 auto 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winning-pulse{0%,to{background:#4caf504d;transform:scale(1)}50%{background:#4caf5099;transform:scale(1.1)}}.game-over{max-width:500px;margin:2rem auto;background:#fff;padding:2rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-xl)}.rematch-button{background:linear-gradient(135deg,#ff9800,#f57c00);color:#fff;border:none;padding:1rem 2rem;border-radius:var(--radius-md);font-size:1.1rem;font-weight:700;cursor:pointer;transition:all var(--animation-duration) var(--animation-easing)}.move-counter{max-width:500px;margin:1.5rem auto 0;text-align:center}.error-message button{margin-top:1rem;background:linear-gradient(135deg,#ff9800,#f57c00);color:#fff;border:none;padding:.75rem 2rem;border-radius:var(--radius-md);font-size:1rem;font-weight:600;cursor:pointer}@media (max-width: 768px){.connect4-container{padding:1rem}.game-header{flex-direction:column;text-align:center}.game-title{font-size:1.5rem}.players-info{flex-direction:column;padding:1rem}.vs-divider{transform:none;margin:.5rem 0}.player-card{width:100%}.connect4-board-container{max-width:100%}.connect4-board{gap:4px;padding:12px}.column-buttons{gap:4px}.column-button{height:40px;padding:.5rem;font-size:1rem}.game-over{padding:1.5rem}.result-icon{font-size:3rem}.result-message h2{font-size:1.5rem}}@media (max-width: 480px){.connect4-board{gap:3px;padding:8px}.column-buttons{gap:3px}.column-button{height:30px;font-size:.8rem}.disc{width:90%;height:90%}}.rps-board{max-width:600px;margin:0 auto;position:relative;z-index:1}.choice-section{background:#ffffff26;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.25);border-radius:24px;padding:40px;text-align:center}.choice-title{margin:0 0 30px;color:#fff;font-size:28px;font-weight:800;text-shadow:0 2px 10px rgba(0,0,0,.3)}.choice-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:20px}.choice-button{aspect-ratio:1;background:#fff3;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:2px solid rgba(255,255,255,.3);border-radius:20px;cursor:pointer;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;transition:all .3s}.choice-button:hover{background:#ffffff4d;border-color:#ffffff80;box-shadow:0 8px 30px #0000004d}.choice-emoji{font-size:80px;line-height:1}.choice-label{color:#fff;font-size:18px;font-weight:700;text-shadow:0 2px 5px rgba(0,0,0,.3)}.waiting-section{background:#ffffff26;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.25);border-radius:24px;padding:60px 40px;text-align:center}.waiting-animation{display:inline-block;margin-bottom:20px}.chosen-emoji{font-size:120px;display:block;filter:drop-shadow(0 4px 10px rgba(0,0,0,.3))}.waiting-section h2{margin:0 0 10px;color:#fff;font-size:28px;font-weight:800;text-shadow:0 2px 10px rgba(0,0,0,.3)}.waiting-section p{margin:0;color:#ffffffe6;font-size:18px;font-weight:600}.result-section{background:#ffffff26;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.25);border-radius:24px;padding:40px;text-align:center}.round-result-banner{padding:20px;border-radius:15px;margin-bottom:30px;animation:slideIn .5s ease-out}@keyframes slideIn{0%{opacity:0;transform:translateY(-20px)}to{opacity:1;transform:translateY(0)}}.round-result-banner.won{background:#4caf504d;border:2px solid rgba(76,175,80,.6)}.round-result-banner.lost{background:#f443364d;border:2px solid rgba(244,67,54,.6)}.round-result-banner.tie{background:#ffc1074d;border:2px solid rgba(255,193,7,.6)}.round-result-banner h2{margin:0;color:#fff;font-size:28px;font-weight:800;text-shadow:0 2px 10px 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600px){.choice-grid{grid-template-columns:1fr;gap:15px}.choice-button{aspect-ratio:auto;padding:30px 20px}.choice-emoji{font-size:60px}.choice-label{font-size:16px}.chosen-emoji{font-size:80px}.result-emoji{font-size:70px}.choices-display{gap:20px}.vs-text{font-size:24px}}.rps-container{min-height:100vh;background:linear-gradient(135deg,#9c27b0,#7b1fa2);padding:20px;position:relative;overflow:hidden}.rps-container:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 20% 50%,rgba(255,255,255,.1) 0%,transparent 50%),radial-gradient(circle at 80% 80%,rgba(255,255,255,.08) 0%,transparent 50%);animation:float 20s ease-in-out infinite}.game-header{display:flex;align-items:center;justify-content:center;margin-bottom:30px;position:relative;z-index:1}.back-button{position:absolute;left:0;padding:10px 20px;background:#fff3;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);color:#fff;border:1px solid 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rgba(0,0,0,.3)}.score-divider{display:flex;flex-direction:column;align-items:center;justify-content:center}.round-info{margin:0;color:#fff;font-size:16px;font-weight:700;text-align:center;white-space:nowrap}.loading-message,.error-message{text-align:center;color:#fff;padding:40px;position:relative;z-index:1}.game-over{max-width:600px;margin:0 auto;position:relative;z-index:1}.result-message{background:#ffffff26;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.25);border-radius:20px;padding:40px;text-align:center;margin-bottom:30px}.result-message.won{border-color:#4caf5080;background:#4caf5026}.result-message.lost{border-color:#f4433680;background:#f4433626}.result-icon{font-size:80px;display:block;margin-bottom:20px}.result-message h2{margin:0 0 10px;color:#fff;font-size:36px;font-weight:800}.result-message p{margin:0;color:#ffffffe6;font-size:18px}.round-history{background:#ffffff26;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.25);border-radius:20px;padding:20px;margin-bottom:30px}.round-history h3{margin:0 0 15px;color:#fff;font-size:20px;font-weight:700;text-align:center}.history-list{display:flex;flex-direction:column;gap:10px}.history-item{display:flex;justify-content:space-between;align-items:center;padding:12px 15px;background:#ffffff1a;border-radius:10px;border:1px solid rgba(255,255,255,.2)}.history-item.won{background:#4caf5033;border-color:#4caf5080}.history-item.lost{background:#f4433633;border-color:#f4433680}.history-item.tie{background:#ffc10733;border-color:#ffc10780}.round-num{color:#fff;font-weight:700;font-size:14px}.round-choices{color:#fff;font-size:18px;flex:1;text-align:center}.round-result{color:#fff;font-weight:600;font-size:14px}.rematch-section{display:flex;flex-direction:column;gap:15px}.rematch-button{width:100%;padding:16px;font-size:18px;font-weight:700;color:#fff;background:linear-gradient(135deg,#4caf50,#45a049);border:none;border-radius:12px;cursor:pointer;transition:all .3s}.rematch-button:hover{transform:translateY(-2px);box-shadow:0 6px 20px #4caf5066}.rematch-status{text-align:center;background:#ffffff26;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.25);border-radius:12px;padding:20px}.rematch-status p{margin:0 0 15px;color:#333;font-size:16px;font-weight:600}.leave-button{width:100%;padding:14px;font-size:16px;font-weight:600;color:#fff;background:#ffffff26;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,255,255,.3);border-radius:12px;cursor:pointer;transition:all .2s}.leave-button:hover{background:#ffffff40}@media (max-width: 600px){.game-title{font-size:24px}.scoreboard{flex-direction:column;gap:15px}.score-item{width:100%;justify-content:center}.score-value{font-size:28px}}.dotsandboxes-board{width:100%;max-width:500px;margin:0 auto 2rem;padding:1.5rem;background:var(--color-bg-secondary);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);box-sizing:border-box}.board-grid{display:grid;gap:0;justify-content:center;align-items:center}.dot{width:12px;height:12px;background:linear-gradient(135deg,#2196f3,#1976d2);border-radius:50%;box-shadow:0 2px 4px #2196f366;z-index:3}.line{transition:all .2s ease;cursor:pointer;position:relative;z-index:2}.line.horizontal{width:60px;height:6px;background:#2196f333;border-radius:3px}.line.vertical{width:6px;height:60px;background:#2196f333;border-radius:3px}.line:not(.disabled):not(.drawn):hover{background:#2196f380;transform:scale(1.1);box-shadow:0 2px 8px #2196f366}.line.drawn{cursor:default;box-shadow:0 2px 8px #0003}.line.disabled{cursor:not-allowed}.box{width:60px;height:60px;background:#ffffff1a;border-radius:4px;transition:all .3s ease;display:flex;align-items:center;justify-content:center;z-index:1}.box.claimed{animation:boxClaim .4s ease-out}@keyframes boxClaim{0%{transform:scale(.8);opacity:0}50%{transform:scale(1.1)}to{transform:scale(1);opacity:1}}.box-owner-avatar{width:80%;height:80%;border-radius:50%;object-fit:cover;border:2px solid white;box-shadow:0 2px 4px #0000004d}@media (max-width: 768px){.dotsandboxes-board{max-width:400px;padding:1rem}.dot{width:10px;height:10px}.line.horizontal{width:50px;height:5px}.line.vertical{width:5px;height:50px}.box{width:50px;height:50px}}@media (max-width: 480px){.dotsandboxes-board{max-width:320px;padding:.75rem}.dot{width:8px;height:8px}.line.horizontal{width:40px;height:4px}.line.vertical{width:4px;height:40px}.box{width:40px;height:40px}}.dotsandboxes-container{min-height:100vh;padding:2rem;background:linear-gradient(135deg,#2196f3,#1976d2)}.game-header{max-width:600px;margin:0 auto 2rem;display:flex;align-items:center;gap:1rem}.game-title{flex:1;text-align:center;color:#fff;margin:0;font-size:2rem}.players-info{max-width:600px;margin:0 auto 2rem;display:flex;align-items:center;gap:1rem;background:#fff;padding:1.5rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg)}.player-card{flex:1;display:flex;align-items:center;gap:1rem;padding:1rem;border-radius:var(--radius-md);border:3px solid transparent;transition:all var(--animation-duration) var(--animation-easing)}.player-card[data-player=host]{background:#2196f34d;border-color:#2196f3}.player-card[data-player=guest]{background:#ff98004d;border-color:#ff9800}.player-card.active[data-player=host]{background:#2196f3;border-color:#2196f3;animation:pulse-player 2s ease-in-out infinite}.player-card.active[data-player=guest]{background:#ff9800;border-color:#ff9800;animation:pulse-player 2s ease-in-out infinite}.player-card .player-name,.player-card .player-score{color:#fff!important}@keyframes pulse-player{0%,to{box-shadow:0 0 #0006}50%{box-shadow:0 0 20px #fff9}}.player-avatar{width:50px;height:50px;border-radius:50%;border:3px solid white}.player-card[data-player=host] .player-avatar{border-color:#2196f3}.player-card[data-player=guest] .player-avatar{border-color:#ff9800}.player-details{flex:1}.player-name{margin:0;font-weight:700;color:var(--color-text-primary);font-size:1.1rem}.player-score{margin:.25rem 0 0;color:#2196f3;font-weight:600;font-size:1rem}.vs-divider{font-weight:800;color:var(--color-text-secondary);font-size:1.5rem}.turn-indicator-section{max-width:400px;margin:1.5rem auto .5rem;text-align:center}.game-status{max-width:400px;margin:0 auto 1.5rem;text-align:center}.rematch-button{background:var(--gradient-primary);color:#fff;border:none;padding:1rem 2rem;border-radius:var(--radius-md);font-size:1.1rem;font-weight:700;cursor:pointer;transition:all var(--animation-duration) var(--animation-easing)}.rematch-button:hover{transform:translateY(-2px);box-shadow:var(--shadow-lg)}.rematch-button.accept{background:var(--gradient-success);animation:pulse-button 2s ease-in-out infinite}.rematch-status{text-align:center;padding:1rem;background:var(--color-bg-secondary);border-radius:var(--radius-md)}.rematch-status p{margin:0 0 1rem;color:#333;font-weight:600}.move-counter{max-width:400px;margin:1.5rem auto 0;text-align:center}.move-counter p{color:#fff;font-size:1rem;font-weight:600;margin:0;text-shadow:0 2px 4px rgba(0,0,0,.2)}.loading-message,.error-message{text-align:center;padding:3rem;color:#fff;font-size:1.5rem;font-weight:600}.loading-message{display:flex;flex-direction:column;align-items:center;gap:1rem}.error-message{background:#fff;color:var(--color-text-primary);border-radius:var(--radius-lg);max-width:500px;margin:2rem auto;box-shadow:var(--shadow-lg)}.error-message p{color:var(--color-error);margin:.5rem 0}.error-message button{margin-top:1rem;background:var(--gradient-primary);color:#fff;border:none;padding:.75rem 2rem;border-radius:var(--radius-md);font-size:1rem;font-weight:600;cursor:pointer}.error-message button:hover{transform:translateY(-2px);box-shadow:var(--shadow-md)}.spinner-large{border:4px solid rgba(255,255,255,.3);border-radius:50%;border-top:4px solid white;width:50px;height:50px;animation:spin 1s linear infinite}@media (max-width: 768px){.dotsandboxes-container{padding:1rem}.game-header{flex-direction:column;text-align:center}.game-title{font-size:1.5rem}.players-info{flex-direction:column;padding:1rem}.vs-divider{transform:none;margin:.5rem 0}.player-card{width:100%}.game-over{padding:1.5rem}.result-icon{font-size:3rem}.result-message h2{font-size:1.5rem}}.player-waiting-state{text-align:center;padding:3rem;color:#fff}.player-waiting-state h3{color:#fff;font-size:1.5rem;margin:1rem 0}.player-waiting-state p{color:#fff;font-size:1.1rem;margin:.5rem 0}.player-waiting-state .waiting-hint{color:#ffffffe6;font-size:1rem}.checkers-container{min-height:100vh;padding:2rem;background:linear-gradient(135deg,#e91e63,#c2185b)}.game-header{max-width:800px;margin:0 auto 1.5rem;display:flex;align-items:center;justify-content:center;position:relative}.checkers-settings-button{position:absolute;right:0;background:#fff3;border:2px solid rgba(255,255,255,.3);color:#fff;width:48px;height:48px;border-radius:50%;font-size:1.5rem;cursor:pointer;transition:all .3s ease;display:flex;align-items:center;justify-content:center;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.checkers-settings-button:hover{background:#ffffff4d;border-color:#ffffff80;transform:rotate(90deg) scale(1.1)}.game-info{max-width:800px;margin:0 auto 2rem}.players-section{display:flex;justify-content:space-between;gap:2rem}.player-info{flex:1;display:flex;align-items:center;gap:1rem;background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:1rem;border-radius:12px;border:2px solid rgba(255,255,255,.2);transition:all .3s ease}.player-info.active-player{background:#ffffff40;border-color:#ffffff80;box-shadow:0 0 20px #ffffff4d}.player-avatar{width:60px;height:60px;border-radius:50%;border:3px solid white;object-fit:cover}.player-name{font-weight:600;font-size:1.1rem;color:#fff}.player-color{font-size:.9rem;color:#fffc}.pieces-count{font-size:.85rem;color:#ffffffb3;font-weight:500}.checkers-board-container{max-width:600px;margin:0 auto;padding:1rem;background:#ffffff1a;border-radius:16px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);box-shadow:0 8px 32px #0003}.checkers-board{display:grid;grid-template-columns:repeat(8,1fr);grid-template-rows:repeat(8,1fr);aspect-ratio:1/1;border:3px solid rgba(255,255,255,.3);border-radius:8px;overflow:hidden;box-shadow:0 4px 12px #0000004d}.checkers-square{position:relative;display:flex;align-items:center;justify-content:center;transition:all .2s ease}.checkers-square.light{background-color:var(--light-square-color, #f0d9b5)}.checkers-square.dark{background-color:var(--dark-square-color, #b58863)}.checkers-square.selected{background-color:#4caf5099!important;box-shadow:inset 0 0 0 3px #4caf50}.checkers-square.legal-move{cursor:pointer}.checkers-square.last-move{background-color:#ffeb3b4d!important}.checkers-square:hover.dark{filter:brightness(1.1)}.row-label,.col-label{position:absolute;font-size:.7rem;font-weight:600;color:#0006;pointer-events:none}.row-label{top:4px;left:4px}.col-label{bottom:4px;right:4px}.move-indicator{position:absolute;width:20px;height:20px;background:#4caf50b3;border-radius:50%;border:2px solid white;pointer-events:none;animation:pulse 1.5s ease-in-out infinite}@keyframes pulse{0%,to{transform:scale(1);opacity:.7}50%{transform:scale(1.2);opacity:1}}.checker-piece{width:70%;height:70%;border-radius:50%;border:3px solid rgba(0,0,0,.2);display:flex;align-items:center;justify-content:center;box-shadow:0 4px 8px #0000004d;transition:transform .2s ease;cursor:pointer}.checker-piece:hover{transform:scale(1.1)}.checker-piece.black{background:radial-gradient(circle at 30% 30%,#555,#000)}.checker-piece.red{background:radial-gradient(circle at 30% 30%,#f66,#c00)}.checker-piece.king .crown{font-size:1.5rem;filter:drop-shadow(0 2px 4px rgba(0,0,0,.5))}.spinner-large{width:60px;height:60px;border:6px solid rgba(0,0,0,.1);border-top-color:#e91e63;border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 1rem}@media (max-width: 768px){.checkers-container{padding:1rem}.game-title{font-size:1.8rem}.players-section{flex-direction:column;gap:1rem}.checkers-board-container{padding:.5rem}.result-message h2{font-size:1.5rem}.result-icon{font-size:3rem}}.checkers-settings-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);animation:fadeIn .2s ease}.checkers-settings-dialog{background:#fff;border-radius:20px;box-shadow:0 20px 60px #0000004d;max-width:700px;width:90%;max-height:80vh;overflow:hidden;display:flex;flex-direction:column;animation:slideUp .3s ease}.checkers-settings-header{padding:1.5rem 2rem;background:linear-gradient(135deg,#e91e63,#c2185b);color:#fff;display:flex;justify-content:space-between;align-items:center}.checkers-settings-header h2{margin:0;font-size:1.5rem}.close-settings-btn{background:#fff3;border:none;color:#fff;font-size:1.5rem;width:40px;height:40px;border-radius:50%;cursor:pointer;transition:all .2s ease;display:flex;align-items:center;justify-content:center}.close-settings-btn:hover{background:#ffffff4d;transform:rotate(90deg)}.checkers-settings-content{padding:2rem;overflow-y:auto;flex:1}.checkers-settings-content h3{margin:0 0 1.5rem;color:#333;font-size:1.2rem}.board-styles-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:1rem}.board-style-option{position:relative;padding:1rem;border:3px solid transparent;border-radius:12px;cursor:pointer;transition:all .2s ease;background:#f5f5f5}.board-style-option:hover{border-color:#ddd;transform:translateY(-2px);box-shadow:0 4px 12px #0000001a}.board-style-option.selected{border-color:#e91e63;background:#e91e630d}.board-preview{display:grid;grid-template-columns:1fr 1fr;grid-template-rows:1fr 1fr;aspect-ratio:1/1;border-radius:8px;overflow:hidden;margin-bottom:.75rem;box-shadow:0 2px 8px #00000026}.style-name{display:block;text-align:center;font-weight:600;color:#333;font-size:.9rem}.selected-check{position:absolute;top:.5rem;right:.5rem;background:#e91e63;color:#fff;width:28px;height:28px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:1rem;box-shadow:0 2px 8px #e91e6366}.checkers-settings-footer{padding:1.5rem 2rem;background:#f9f9f9;border-top:1px solid #eee;display:flex;justify-content:flex-end;gap:1rem}.cancel-btn,.save-btn{padding:.75rem 2rem;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .2s ease;border:none}.cancel-btn{background:#fff;color:#666;border:2px solid #ddd}.cancel-btn:hover:not(:disabled){background:#f5f5f5;border-color:#999}.save-btn{background:#e91e63;color:#fff}.save-btn:hover:not(:disabled){background:#c2185b;transform:translateY(-2px);box-shadow:0 4px 12px #e91e634d}.save-btn:disabled,.cancel-btn:disabled{opacity:.5;cursor:not-allowed}@media (max-width: 768px){.checkers-settings-dialog{width:95%;max-height:90vh}.board-styles-grid{grid-template-columns:repeat(auto-fill,minmax(120px,1fr));gap:.75rem}.checkers-settings-header{padding:1rem 1.5rem}.checkers-settings-content{padding:1.5rem}}.battleship-container{min-height:100vh;padding:2rem;background:linear-gradient(135deg,#1e3a5f,#2c5282)}.game-header{max-width:1200px;margin:0 auto 1.5rem;text-align:center}.game-title{color:#fff;margin:0;font-size:2.5rem;text-shadow:2px 2px 4px rgba(0,0,0,.3)}.placement-phase{max-width:800px;margin:0 auto;text-align:center}.placement-phase h2{color:#fff;margin-bottom:1.5rem;font-size:2rem}.ship-selection{display:flex;flex-wrap:wrap;gap:1rem;justify-content:center;margin-bottom:1.5rem}.ship-button{background:#ffffffe6;border:3px solid transparent;padding:1rem 1.5rem;border-radius:12px;cursor:pointer;transition:all .3s ease;display:flex;flex-direction:column;align-items:center;gap:.25rem;min-width:140px}.ship-button:hover:not(.placed){transform:translateY(-2px);box-shadow:0 6px 20px #0003;border-color:#00bcd4}.ship-button.selected{border-color:#00bcd4;background:#00bcd433;transform:scale(1.05)}.ship-button.placed{background:#4caf5033;border-color:#4caf50;cursor:not-allowed}.ship-name{font-weight:600;font-size:1rem;color:#333}.ship-size{font-size:.85rem;color:#666}.checkmark{color:#4caf50;font-size:1.2rem;font-weight:700}.placement-controls{display:flex;gap:1rem;justify-content:center;margin-bottom:1.5rem}.control-button{background:#ffffffe6;border:2px solid rgba(255,255,255,.3);color:#333;padding:.75rem 1.5rem;border-radius:8px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease}.control-button:hover{background:#fff;transform:translateY(-2px);box-shadow:0 4px 12px #0003}.ready-button{background:#4caf50;color:#fff;border:none;padding:1rem 3rem;border-radius:12px;font-size:1.2rem;font-weight:600;cursor:pointer;margin-top:1.5rem;transition:all .3s ease}.ready-button:hover{background:#45a049;transform:translateY(-2px);box-shadow:0 6px 20px #4caf5066}.waiting-opponent{text-align:center;padding:3rem;background:#ffffff1a;border-radius:16px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);margin:2rem auto;max-width:600px}.waiting-spinner{width:60px;height:60px;border:6px solid rgba(255,255,255,.2);border-top-color:#fff;border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 1.5rem}.waiting-opponent p{color:#fff;margin:.5rem 0;font-size:1.1rem}.battle-phase{max-width:1400px;margin:0 auto}.turn-indicator-section{max-width:1400px;margin:1.5rem auto .5rem;text-align:center}.game-status{max-width:1400px;margin:0 auto 1.5rem;text-align:center}.dual-grids{display:flex;flex-direction:column;gap:2rem;margin:0 auto;max-width:600px;justify-content:center;align-items:center}.grid-section{display:flex;flex-direction:column;gap:0;background:#f5e6d3;border-radius:20px;overflow:hidden;box-shadow:0 10px 40px #0000004d;position:relative;width:100%;max-width:600px}.grid-section h3{text-align:center;color:#fff;margin:0 0 .75rem;font-size:1.1rem;font-weight:700;text-transform:uppercase;letter-spacing:1px;text-shadow:0 2px 4px rgba(0,0,0,.3)}.battleship-board-wrapper{display:flex;justify-content:center;margin:0 auto;padding:1.5rem;flex:1;width:100%}.battleship-board{display:grid;grid-template-columns:30px repeat(10,minmax(0,1fr));grid-template-rows:30px repeat(10,minmax(0,1fr));gap:1px;background:#d4c4b0;padding:1px;border-radius:8px;width:calc(100vw - 3rem);max-width:450px;aspect-ratio:1 / 1;height:auto}.board-cell{background:#f5e6d3;display:flex;align-items:center;justify-content:center;font-weight:700;font-size:.75rem;color:#666}.header-cell{background:#e8d9c5;color:#333;font-weight:700}.battleship-cell{background:#fff;cursor:pointer;transition:all .2s ease;position:relative;display:flex;align-items:center;justify-content:center}.battleship-cell:hover:not(.disabled){background:#f0f0f0;box-shadow:inset 0 0 0 2px #ff9500}.battleship-cell.has-ship{background:#4a9b8e}.battleship-cell.preview-cell{background:#4caf504d;border:2px solid #4CAF50}.battleship-cell.hit{background:#ff5252!important}.battleship-cell.miss{background:#fff!important}.battleship-cell.attackable{cursor:crosshair}.battleship-cell.attackable:hover{background:#ffd54f;box-shadow:inset 0 0 0 2px #ff9800}.ship-status-sidebar{background:#ff9500;padding:1rem 1.5rem;width:100%;display:flex;flex-direction:row;flex-wrap:wrap;gap:.75rem;justify-content:center;align-items:center}.ship-status-item{display:flex;align-items:center;gap:.75rem;color:#fff;font-size:.9rem;font-weight:600}.ship-status-checkbox{width:18px;height:18px;border:2px solid white;border-radius:3px;display:flex;align-items:center;justify-content:center;flex-shrink:0}.ship-status-checkbox.checked{background:#fff;color:#ff9500}.ship-status-checkbox.sunk{background:#ff5252;border-color:#ff5252;color:#fff}.battleship-cell.disabled{cursor:not-allowed;opacity:.7}.ship-cell{font-weight:700;font-size:1.2rem;color:#1976d2}.ship-cell.hit{color:#fff}.ship-preview{font-weight:700;color:#4caf50;font-size:1rem;opacity:.6}.hit-marker{font-size:1.5rem;animation:hitAnimation .3s ease}@keyframes hitAnimation{0%{transform:scale(0)}50%{transform:scale(1.3)}to{transform:scale(1)}}.miss-marker{font-size:1.2rem;opacity:.8}.action-log{background:#f5e6d3;border:3px solid #ff9500;border-radius:12px;padding:1rem;margin:2rem auto 0;max-width:1200px;min-height:120px;max-height:200px;overflow-y:auto}.action-log-entry{padding:.5rem 0;font-size:.9rem;color:#333;border-bottom:1px solid #d4c4b0}.action-log-entry:last-child{border-bottom:none}.action-log-time{color:#666;margin-right:.5rem;font-weight:600}.game-over{max-width:800px;margin:2rem auto 0;text-align:center}.result-message{padding:2rem;background:#fffffff2;border-radius:16px;box-shadow:0 8px 32px #0003;margin-bottom:1.5rem}.result-message.won{border:3px solid #4CAF50}.result-message.lost{border:3px solid #f44336}.result-message h2{margin:0 0 .5rem;font-size:2rem;color:#333}.result-message p{margin:0;font-size:1.1rem;color:#666}.rematch-section{display:flex;flex-direction:column;gap:1rem;align-items:center}.rematch-button{padding:1rem 2rem;font-size:1.1rem;font-weight:600;border:none;border-radius:12px;cursor:pointer;transition:all .3s ease;min-width:200px}.rematch-button:not(:disabled):hover{transform:translateY(-2px);box-shadow:0 6px 20px #0003}.rematch-button:not(.waiting):not(.starting){background:#667eea;color:#fff}.rematch-button.waiting,.rematch-button.starting{background:#f0f0f0;color:#666;cursor:not-allowed}.rematch-button.accept{background:#4caf50;color:#fff}.rematch-hint{color:#fff;font-size:1rem;margin:0}.leave-game-section{max-width:800px;margin:2rem auto 0;text-align:center}.leave-button{background:#fff3;color:#fff;border:2px solid rgba(255,255,255,.3);padding:.75rem 2rem;border-radius:12px;font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.leave-button:hover{background:#ffffff4d;border-color:#ffffff80;transform:translateY(-2px)}.loading-message,.error-message{max-width:600px;margin:4rem auto;text-align:center;padding:3rem;background:#fffffff2;border-radius:16px;box-shadow:0 8px 32px #0003}.spinner-large{width:60px;height:60px;border:6px solid rgba(0,0,0,.1);border-top-color:#00bcd4;border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 1rem}.loading-message p,.error-message p{margin:0;color:#666;font-size:1.1rem}.player-waiting-state{text-align:center;padding:3rem;background:#ffffff1a;border-radius:16px;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);margin:2rem auto;max-width:600px}.player-waiting-state h3,.player-waiting-state p{color:#fff;margin:.5rem 0}.waiting-hint{font-size:.9rem;opacity:.8}@media (max-width: 1200px){.dual-grids{gap:1.5rem}.battleship-board{max-width:600px}}@media (max-width: 768px){.battleship-container{padding:1rem}.game-title{font-size:1.8rem}.ship-selection{gap:.75rem}.ship-button{min-width:120px;padding:.75rem 1rem}.placement-controls{flex-direction:column}.control-button{width:100%}.dual-grids{gap:1rem;max-width:100%}.grid-section{max-width:100%}.battleship-board{width:calc(100vw - 2.5rem);height:auto;aspect-ratio:1 / 1;max-width:100%}.board-cell{font-size:.65rem}.ship-status-sidebar{padding:1rem;gap:.5rem}.ship-status-item{font-size:.8rem}.result-message h2{font-size:1.5rem}.result-icon{font-size:3rem}}.orientation-popup-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .2s ease}.orientation-popup{background:#fff;border-radius:20px;padding:2rem;box-shadow:0 10px 40px #0000004d;max-width:500px;width:90%;animation:slideUp .3s ease}@keyframes slideUp{0%{transform:translateY(50px);opacity:0}to{transform:translateY(0);opacity:1}}.orientation-popup h3{margin:0 0 1.5rem;text-align:center;font-size:1.5rem;color:#333}.orientation-options{display:flex;gap:1.5rem;justify-content:center}.orientation-option{background:#f5f5f5;border:3px solid #e0e0e0;border-radius:16px;padding:1.5rem;cursor:pointer;transition:all .3s ease;display:flex;flex-direction:column;align-items:center;gap:1rem;min-width:140px}.orientation-option:hover{border-color:#00bcd4;transform:translateY(-4px);box-shadow:0 8px 20px #00bcd44d}.orientation-option span{font-weight:600;font-size:1rem;color:#333}.orientation-visual{width:100px;height:100px;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#00bcd4,#0097a7);border-radius:12px;padding:1rem}.orientation-visual.horizontal .ship-line{width:80px;height:12px;background:#fff;border-radius:6px;box-shadow:0 2px 8px #0003}.orientation-visual.vertical .ship-line{width:12px;height:80px;background:#fff;border-radius:6px;box-shadow:0 2px 8px #0003}.chess-container{min-height:100vh;padding:2rem;background:linear-gradient(135deg,#607d8b,#455a64)}.game-header{max-width:800px;margin:0 auto 1.5rem;display:flex;align-items:center;justify-content:center}.game-title{text-align:center;color:#fff;margin:0;font-size:2.5rem;text-shadow:2px 2px 4px rgba(0,0,0,.3)}.turn-indicator-section{max-width:800px;margin:1.5rem auto .5rem;text-align:center}.turn-indicator-section .turn-indicator{color:#fff;font-size:1.3rem;font-weight:700;margin:0;text-shadow:0 2px 4px rgba(0,0,0,.3);animation:pulse-text 1.5s ease-in-out infinite}@keyframes pulse-text{0%,to{opacity:1}50%{opacity:.6}}.game-status{max-width:800px;margin:0 auto 1.5rem;text-align:center}.status-text{color:#fff;font-size:1.2rem;font-weight:600;margin:0;text-shadow:0 2px 4px rgba(0,0,0,.2)}.chess-settings-section{max-width:800px;margin:1rem auto;text-align:center}.chess-settings-button{background:#ffffffe6;border:2px solid rgba(102,126,234,.5);color:#667eea;padding:.75rem 1.5rem;border-radius:var(--radius-md);font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;display:inline-flex;align-items:center;justify-content:center;gap:.5rem}.chess-settings-button:hover{background:#667eea;color:#fff;border-color:#667eea;transform:translateY(-2px);box-shadow:var(--shadow-md)}.game-actions{max-width:800px;margin:1rem auto 0;display:flex;gap:1rem;justify-content:center;align-items:center}.offer-draw-button{background:#fff;color:#667eea;border:2px solid #667eea;padding:.75rem 1.5rem;border-radius:var(--radius-md);font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease}.offer-draw-button:hover:not(:disabled){background:#667eea;color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md)}.offer-draw-button:disabled{opacity:.4;cursor:not-allowed;background:#f0f0f0;color:#999;border-color:#ccc}.resign-button{background:#fff;color:#d32f2f;border:2px solid #d32f2f;padding:.75rem 1.5rem;border-radius:var(--radius-md);font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease}.resign-button:hover:not(:disabled){background:#d32f2f;color:#fff;transform:translateY(-2px);box-shadow:var(--shadow-md)}.resign-button:disabled{opacity:.4;cursor:not-allowed;background:#f0f0f0;color:#999;border-color:#ccc}.draw-offer-dialog{min-width:400px}.draw-offer-buttons{display:flex;gap:1rem;margin-top:1rem}.accept-draw-button,.decline-draw-button{flex:1;padding:1rem 1.5rem;border-radius:var(--radius-md);font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;border:none}.accept-draw-button{background:#4caf50;color:#fff}.accept-draw-button:hover{background:#45a049;transform:translateY(-2px);box-shadow:var(--shadow-lg)}.decline-draw-button{background:#f5f5f5;color:#333;border:2px solid #ddd}.decline-draw-button:hover{background:#e0e0e0;border-color:#999;transform:translateY(-2px)}.leave-game-section{max-width:800px;margin:1.5rem auto 0;text-align:center}.leave-button{background:var(--color-bg-secondary);color:var(--color-text-primary);border:2px solid var(--color-border-primary);padding:.75rem 2rem;border-radius:var(--radius-md);font-size:1rem;font-weight:600;cursor:pointer;transition:all var(--animation-duration) var(--animation-easing)}.leave-button:hover{border-color:var(--color-error);color:var(--color-error)}.game-info{max-width:800px;margin:0 auto 1.5rem;background:#fff;padding:1.5rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg)}.players-section{display:flex;flex-direction:column;justify-content:center;align-items:stretch;gap:1rem;margin-bottom:1rem}.player-info{display:flex;align-items:center;gap:1rem;padding:1rem;border-radius:var(--radius-md);background:transparent;flex:1;transition:all .3s ease}.player-info.active-player{background:linear-gradient(135deg,#667eea,#764ba2);box-shadow:0 0 20px #667eea80;animation:pulse-player 2s ease-in-out infinite}.player-info.active-player .player-name,.player-info.active-player .player-color{color:#fff}@keyframes pulse-player{0%,to{box-shadow:0 0 10px #667eea80}50%{box-shadow:0 0 25px #667eeab3}}.player-avatar{width:48px;height:48px;border-radius:50%;border:3px solid white;box-shadow:var(--shadow-sm)}.player-details{display:flex;flex-direction:column;gap:.25rem}.player-name{font-weight:600;font-size:1.1rem;color:#fff;text-shadow:2px 2px 4px rgba(0,0,0,.5)}.player-color{font-size:.9rem;color:#fff;text-shadow:1px 1px 3px rgba(0,0,0,.5)}.move-counter{text-align:center;color:#666;font-size:.95rem;margin-top:.5rem}.chess-game-area{max-width:800px;margin:0 auto;display:flex;flex-direction:column;gap:.5rem}.captured-row{display:flex;flex-direction:row;align-items:center;min-height:36px;padding:0 1rem}.opponent-captures,.my-captures{justify-content:flex-start}.captured-piece{font-size:1.8rem;position:relative;margin-left:-.5rem;transition:all .2s ease;cursor:default;display:inline-flex;align-items:center;justify-content:center}.captured-piece:first-child{margin-left:0}.captured-piece:hover{transform:translateY(-3px) scale(1.15);z-index:1000!important}.captured-piece-image{width:2rem;height:2rem;object-fit:contain;filter:drop-shadow(2px 2px 3px rgba(0,0,0,.3))}.captured-white{color:#fff;text-shadow:-1px -1px 0 #000,1px -1px 0 #000,-1px 1px 0 #000,1px 1px 0 #000;filter:drop-shadow(2px 2px 3px rgba(0,0,0,.4))}.captured-black{color:#000;text-shadow:-1px -1px 0 #fff,1px -1px 0 #fff,-1px 1px 0 #fff,1px 1px 0 #fff;filter:drop-shadow(2px 2px 3px rgba(0,0,0,.3))}.chess-board-container{max-width:800px;margin:0 auto;display:flex;justify-content:center;padding:1rem}.chess-board{display:grid;grid-template-columns:repeat(8,1fr);grid-template-rows:repeat(8,1fr);gap:0;background:#312e2b;padding:1rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);aspect-ratio:1;max-width:100%;width:100%;overflow:hidden}.chess-square{aspect-ratio:1;display:flex;align-items:center;justify-content:center;cursor:pointer;position:relative;transition:all .2s ease;min-width:0;min-height:0;overflow:hidden}.chess-square.light{background:#f0d9b5}.chess-square.dark{background:#b58863}.chess-square:hover:not(.selected){filter:brightness(.9)}.chess-square.selected{background:#baca44!important;box-shadow:inset 0 0 0 3px #829769}.chess-square.legal-move{cursor:pointer}.chess-square.last-move{background:#cdd26a!important}.chess-square.in-check{background:#ff6b6b!important;animation:check-flash .5s ease-in-out 3}@keyframes check-flash{0%,to{opacity:1}50%{opacity:.7}}.square-label{position:absolute;font-size:.7rem;font-weight:600;color:#0006;pointer-events:none}.rank-label{left:4px;top:4px}.file-label{right:4px;bottom:4px}.chess-square.dark .square-label{color:#fff9}.chess-piece-wrapper{-webkit-user-select:none;user-select:none;pointer-events:none;z-index:1;width:100%;height:100%;display:flex;align-items:center;justify-content:center}.chess-piece{font-size:3rem;filter:drop-shadow(2px 2px 2px rgba(0,0,0,.3))}.chess-piece-image{width:85%;height:85%;object-fit:contain;filter:drop-shadow(2px 2px 3px rgba(0,0,0,.2))}.white-piece{color:#fff;text-shadow:-1px -1px 0 #000,1px -1px 0 #000,-1px 1px 0 #000,1px 1px 0 #000}.black-piece{color:#000;text-shadow:-1px -1px 0 #fff,1px -1px 0 #fff,-1px 1px 0 #fff,1px 1px 0 #fff}.move-indicator{width:25%;height:25%;background:#00000026;border-radius:50%;z-index:0}.capture-indicator{position:absolute;top:0;left:0;right:0;bottom:0;border:4px solid rgba(255,0,0,.5);border-radius:50%;z-index:0}.promotion-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .2s ease}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.promotion-dialog{background:#fff;padding:2rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);max-width:500px;animation:slideUp .3s ease}@keyframes slideUp{0%{transform:translateY(20px);opacity:0}to{transform:translateY(0);opacity:1}}.promotion-dialog h3{margin:0 0 .5rem;color:#333;font-size:1.8rem}.promotion-dialog p{color:#666;margin:0 0 1.5rem}.promotion-options{display:grid;grid-template-columns:repeat(4,1fr);gap:1rem}.promotion-button{background:#f5f5f5;border:3px solid #ddd;padding:1.5rem .5rem;border-radius:var(--radius-md);cursor:pointer;transition:all .2s ease;display:flex;flex-direction:column;align-items:center;gap:.5rem}.promotion-button:hover{background:#667eea;border-color:#667eea;color:#fff;transform:translateY(-3px);box-shadow:var(--shadow-lg)}.promotion-piece{font-size:3rem;display:flex;align-items:center;justify-content:center;width:100%;height:4rem}.promotion-piece-image{width:3.5rem;height:3.5rem;object-fit:contain;filter:drop-shadow(2px 2px 3px rgba(0,0,0,.2))}.promotion-button span:last-child{font-size:.9rem;font-weight:600}.game-over{max-width:500px;margin:3rem auto 2rem;background:#fff;padding:2rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-xl)}.result-message{text-align:center;margin-bottom:2rem}.result-icon{font-size:4rem;display:block;margin-bottom:1rem}.result-message h2{margin:0 0 .5rem;font-size:2rem;color:var(--color-text-primary)}.result-message p{margin:0;color:var(--color-text-secondary);font-size:1.1rem}.result-message.won h2{color:var(--color-success)}.result-message.lost h2{color:var(--color-error)}.result-message.draw h2{color:var(--color-warning)}.rematch-section{display:flex;flex-direction:column;gap:1rem}.rematch-button{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;border:none;padding:1rem 2rem;border-radius:var(--radius-md);font-size:1.1rem;font-weight:700;cursor:pointer;transition:all .3s ease}.rematch-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-lg)}.rematch-button:disabled{opacity:.7;cursor:not-allowed}.rematch-button.accept{background:linear-gradient(135deg,#4caf50,#45a049);animation:pulse-button 2s ease-in-out infinite}@keyframes pulse-button{0%,to{box-shadow:0 4px 12px #4caf5066}50%{box-shadow:0 8px 24px #4caf50cc}}.rematch-hint{text-align:center;padding:.5rem;color:var(--color-text-secondary);font-size:.95rem;font-style:italic;margin:0}.loading-message,.error-message{max-width:600px;margin:2rem auto;padding:2rem;background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);text-align:center}.spinner-large{width:64px;height:64px;border:6px solid #f3f3f3;border-top:6px solid #667eea;border-radius:50%;margin:0 auto 1rem;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.error-message{color:#d32f2f;font-weight:600}.player-waiting-state{text-align:center;color:#fff}.waiting-spinner{width:48px;height:48px;border:5px solid rgba(255,255,255,.3);border-top:5px solid white;border-radius:50%;margin:0 auto 1rem;animation:spin 1s linear infinite}.player-waiting-state h3{font-size:1.8rem;margin:0 0 .5rem}.player-waiting-state p{font-size:1.1rem;margin:.5rem 0}.waiting-hint{opacity:.8;font-size:1rem!important}@media (max-width: 768px){.chess-container{padding:1rem}.game-title{font-size:2rem}.chess-piece{font-size:2.5rem}.promotion-options{grid-template-columns:repeat(2,1fr)}.captured-row{padding:0 .5rem}.captured-piece{font-size:1.4rem}.captured-piece-image{width:1.5rem;height:1.5rem}.game-actions{flex-direction:column;gap:.75rem}.game-over{padding:1.5rem;margin:2rem auto 1.5rem}.result-icon{font-size:3rem}.result-message h2{font-size:1.5rem}.offer-draw-button,.resign-button{width:100%;max-width:300px}.draw-offer-dialog{min-width:auto;width:90%;max-width:400px}.draw-offer-buttons{flex-direction:column}}@media (max-width: 480px){.chess-piece{font-size:2rem}.square-label{font-size:.6rem}.chess-board{padding:.5rem}}.chess-settings-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .2s ease}.chess-settings-dialog{background:#fff;border-radius:var(--radius-lg);box-shadow:var(--shadow-xl);max-width:800px;width:90%;max-height:90vh;display:flex;flex-direction:column;animation:slideUp .3s ease}.chess-settings-header{display:flex;align-items:center;justify-content:space-between;padding:1.5rem;border-bottom:2px solid #f0f0f0}.chess-settings-header h2{margin:0;color:#333;font-size:1.8rem}.close-settings-btn{background:none;border:none;font-size:1.8rem;cursor:pointer;color:#999;width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:all .2s ease}.close-settings-btn:hover{background:#f0f0f0;color:#333}.chess-settings-tabs{display:flex;gap:0;padding:0 1.5rem;border-bottom:2px solid #f0f0f0}.settings-tab{flex:1;padding:1rem 1.5rem;background:none;border:none;border-bottom:3px solid transparent;cursor:pointer;font-size:1rem;font-weight:600;color:#666;transition:all .3s ease}.settings-tab:hover{color:#333;background:#f9f9f9}.settings-tab.active{color:#667eea;border-bottom-color:#667eea}.chess-settings-content{flex:1;overflow-y:auto;padding:1.5rem}.board-styles-grid,.piece-sets-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:1rem}.board-style-option,.piece-set-option{background:#fff;border:3px solid 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rgba(0,0,0,.3))}.image-preview{width:100%;height:100%;display:flex;align-items:center;justify-content:center}.preview-pieces-container{display:flex;gap:.5rem;align-items:center;justify-content:center}.preview-piece-image{width:50px;height:50px;object-fit:contain;filter:drop-shadow(2px 2px 3px rgba(0,0,0,.2))}.preview-piece-placeholder{width:60px;height:60px;background:linear-gradient(135deg,#667eea,#764ba2);border-radius:50%;display:flex;align-items:center;justify-content:center;color:#fff;font-size:2rem;font-weight:700}.style-name{font-weight:600;color:#333;font-size:.95rem;text-align:center}.selected-check{position:absolute;top:.5rem;right:.5rem;background:#667eea;color:#fff;width:24px;height:24px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-size:.9rem;font-weight:700}.chess-settings-footer{display:flex;gap:1rem;padding:1.5rem;border-top:2px solid #f0f0f0;justify-content:flex-end}.cancel-btn,.save-btn{padding:.75rem 1.5rem;border-radius:var(--radius-md);font-size:1rem;font-weight:600;cursor:pointer;transition:all .3s ease;border:none}.cancel-btn{background:#f0f0f0;color:#666}.cancel-btn:hover{background:#e0e0e0;color:#333}.save-btn{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff}.save-btn:hover:not(:disabled){transform:translateY(-2px);box-shadow:var(--shadow-lg)}.save-btn:disabled{opacity:.6;cursor:not-allowed}@media (max-width: 768px){.chess-settings-dialog{width:95%;max-height:95vh}.board-styles-grid,.piece-sets-grid{grid-template-columns:repeat(auto-fill,minmax(120px,1fr))}.board-preview,.piece-preview{width:80px;height:80px}.chess-settings-header h2{font-size:1.4rem}.settings-tab{padding:.75rem 1rem;font-size:.9rem}}@media (max-width: 480px){.board-styles-grid,.piece-sets-grid{grid-template-columns:repeat(2,1fr)}}.room-lobby-container{min-height:100vh;display:flex;justify-content:center;align-items:center;padding:20px;background:linear-gradient(135deg,#667eea,#764ba2);position:relative;overflow:hidden}.room-lobby-container:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:radial-gradient(circle at 20% 50%,rgba(255,255,255,.1) 0%,transparent 50%),radial-gradient(circle at 80% 80%,rgba(255,255,255,.08) 0%,transparent 50%);animation:float 20s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-20px)}}.room-lobby-card{background:#ffffff26;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.25);border-radius:24px;padding:40px;max-width:600px;width:100%;box-shadow:0 8px 32px #0000004d,0 0 60px #667eea33,inset 0 0 0 1px #ffffff1a;animation:slideUp .4s ease-out;position:relative;z-index:1}@keyframes slideUp{0%{opacity:0;transform:translateY(30px)}to{opacity:1;transform:translateY(0)}}.loading-state,.error-state{text-align:center;color:#fff;padding:40px}.spinner-large{width:60px;height:60px;border:6px solid rgba(255,255,255,.3);border-top-color:#fff;border-radius:50%;animation:spin 1s linear infinite;margin:0 auto 20px}@keyframes spin{to{transform:rotate(360deg)}}.error-state p{font-size:18px;margin:10px 0}.lobby-brand{text-align:center;margin-bottom:25px;cursor:pointer;transition:all .3s ease;padding:10px;border-radius:12px}.lobby-brand:hover{background:#ffffff1a;transform:translateY(-2px)}.lobby-logo{margin:0;font-size:2rem;font-weight:900;color:#fff;letter-spacing:1px;text-shadow:0 2px 10px rgba(0,0,0,.2);padding:10px 20px;border-radius:8px;display:inline-block;box-shadow:0 0 0 1px #ffffff4d}.lobby-header{text-align:center;margin-bottom:30px;padding-bottom:20px;border-bottom:2px solid rgba(255,255,255,.2)}.lobby-header h2{margin:0 0 15px;color:#fff;font-size:28px;text-shadow:0 2px 10px rgba(0,0,0,.2);font-weight:800}.room-code-display{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap}.code-label{color:#ffffffe6;font-size:14px;font-weight:600}.code-value{font-family:Impact,Arial Black,sans-serif;font-size:32px;font-weight:900;color:#fff;letter-spacing:4px;text-transform:uppercase;text-shadow:0 0 30px rgba(255,255,255,.8),0 4px 15px rgba(0,0,0,.5),0 0 10px rgba(255,255,255,.6)}.copy-button{padding:8px 16px;background:#ffffff40;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);color:#fff;border:1px solid rgba(255,255,255,.3);border-radius:8px;cursor:pointer;font-size:14px;font-weight:600;transition:all .2s}.copy-button:hover{background:#ffffff59;transform:translateY(-2px);box-shadow:0 4px 12px #0003}.copy-button:active{transform:translateY(0)}.players-section{margin-bottom:25px}.players-section h3{margin:0 0 15px;color:#fff;font-size:20px;font-weight:700}.player-card{display:flex;align-items:center;gap:15px;padding:15px;background:#ffffff1f;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border-radius:12px;margin-bottom:12px;border:1px solid rgba(255,255,255,.2);transition:all .3s}.player-card.ready{background:#4caf5033;border-color:#4caf5080}.player-card.waiting{background:#ffa72626;border:2px dashed rgba(255,167,38,.5)}.player-avatar-container{position:relative;width:50px;height:50px}.player-avatar{width:50px;height:50px;border-radius:50%;object-fit:cover;border:3px solid white;box-shadow:0 2px 8px #0000001a}.presence-indicator{position:absolute;bottom:2px;right:2px;width:14px;height:14px;border-radius:50%;border:2px solid white;box-shadow:0 2px 4px #0003}.presence-indicator.active{background-color:#10b981}.presence-indicator.inactive{background-color:#9ca3af}.waiting-indicator{width:50px;height:50px;display:flex;align-items:center;justify-content:center}.waiting-spinner{width:30px;height:30px;border:3px solid rgba(255,167,38,.3);border-top-color:#ffa726;border-radius:50%;animation:spin 1s linear infinite}.player-info{flex:0 1 auto;min-width:0}.player-name{margin:0 0 5px;font-size:16px;font-weight:700;color:#fff;display:flex;align-items:center;gap:8px;flex-wrap:nowrap;text-shadow:0 2px 4px rgba(0,0,0,.2)}.you-badge{background:#667eea;color:#fff;padding:2px 8px;border-radius:4px;font-size:11px;font-weight:700;text-transform:uppercase;flex-shrink:0;white-space:nowrap}.host-badge{background:#ffa726;color:#fff;padding:2px 8px;border-radius:4px;font-size:11px;font-weight:700;text-transform:uppercase;flex-shrink:0;white-space:nowrap}.player-status{margin:0;font-size:14px;color:#fffc}.player-card.ready .player-status{color:#4caf50;font-weight:600;text-shadow:0 0 10px rgba(76,175,80,.5)}.player-actions{display:flex;gap:8px;align-items:center;flex:0 0 auto;margin-left:auto}.add-friend-button{padding:6px 12px;background:#4caf50;color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:12px;font-weight:600;transition:all .2s}.add-friend-button:hover{background:#45a049;transform:translateY(-1px)}.resend-request-button{padding:6px 12px;background:#3b82f6;color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:12px;font-weight:600;transition:all .2s}.resend-request-button:hover{background:#2563eb;transform:translateY(-1px)}.cancel-request-button{padding:6px 12px;background:#ef4444;color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:12px;font-weight:600;transition:all .2s}.cancel-request-button:hover{background:#dc2626;transform:translateY(-1px)}.already-friends-button{padding:6px 12px;background:#2e7d32;color:#fff;border:none;border-radius:6px;font-size:12px;font-weight:600;cursor:not-allowed;opacity:.8}.kick-button{padding:6px 12px;background:#f44336;color:#fff;border:none;border-radius:6px;cursor:pointer;font-size:12px;font-weight:600;transition:all .2s}.kick-button:hover{background:#d32f2f}.status-message{padding:12px;background:#e3f2fd;border:1px solid #90caf9;border-radius:8px;text-align:center;color:#1976d2;margin-bottom:20px;font-size:14px;font-weight:500}.status-message.success{background:#e8f5e9;border-color:#4caf50;color:#2e7d32}.action-buttons{display:flex;gap:12px;margin-bottom:20px}.ready-button{flex:1;padding:14px;font-size:16px;font-weight:600;color:#fff;background:#4caf50;border:none;border-radius:12px;cursor:pointer;transition:all .2s}.ready-button:hover{background:#45a049;transform:translateY(-2px);box-shadow:0 6px 16px #4caf504d}.ready-button.ready{background:#2e7d32}.ready-button.ready:hover{background:#1b5e20}.leave-button{flex:1;padding:14px;font-size:16px;font-weight:600;color:#f44336;background:#fff;border:2px solid #f44336;border-radius:12px;cursor:pointer;transition:all .2s}.leave-button:hover{background:#ffebee}.start-game-button{flex:2;padding:16px;font-size:18px;font-weight:700;color:#fff;background:linear-gradient(135deg,#667eea,#764ba2);border:none;border-radius:12px;cursor:pointer;transition:all .3s;box-shadow:0 4px 12px #667eea66;animation:pulse-glow 2s ease-in-out infinite}@keyframes pulse-glow{0%,to{box-shadow:0 4px 12px #667eea66}50%{box-shadow:0 6px 20px #667eea99}}.start-game-button:hover{transform:translateY(-3px);box-shadow:0 8px 24px #667eea80}.start-game-button:active{transform:translateY(-1px)}.chat-section{margin-top:30px;margin-bottom:20px}.info-section{background:#ffffff1a;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);padding:20px;border-radius:12px;text-align:center;border:1px solid rgba(255,255,255,.2)}.info-section h4{margin:0 0 10px;color:#fff;font-size:16px;font-weight:700}.info-section p{margin:0;color:#ffffffe6;font-size:14px;line-height:1.6}@media (max-width: 600px){.room-lobby-card{padding:30px 20px}.lobby-logo{font-size:1.3rem;letter-spacing:.5px;padding:8px 15px}.lobby-header h2{font-size:24px}.code-value{font-size:20px}.player-card{padding:12px}.player-avatar{width:40px;height:40px}.action-buttons{flex-direction:column}.ready-button,.leave-button,.start-game-button{padding:12px}}.settings-container{min-height:100vh;padding:2rem;background-color:var(--color-bg-secondary)}.settings-header{max-width:1200px;margin:0 auto 2rem;text-align:center}.settings-header h1{margin:1rem 0 .5rem;font-size:2.5rem;background:var(--gradient-primary);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.settings-header p{color:var(--color-text-secondary);font-size:1.1rem}.back-button-container{max-width:1200px;margin:2rem auto 0;display:flex;justify-content:center}.primary-back-button{padding:16px 32px;font-size:18px;font-weight:600;color:#fff;background:linear-gradient(135deg,#f093fb,#f5576c);border:none;border-radius:12px;cursor:pointer;transition:transform .2s,box-shadow .2s;display:flex;align-items:center;justify-content:center;gap:10px}.primary-back-button:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 8px 20px #f5576c66}.primary-back-button:active:not(:disabled){transform:translateY(0)}.primary-back-button:disabled{opacity:.6;cursor:not-allowed}.primary-back-button .icon{font-size:24px}.settings-layout{max-width:1200px;margin:0 auto;display:grid;grid-template-columns:250px 1fr;gap:2rem}.settings-tabs{display:flex;flex-direction:column;gap:.5rem;background-color:var(--color-card-bg);padding:1rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-md);height:fit-content;position:sticky;top:2rem}.settings-tabs .tab{background-color:transparent;color:var(--color-text-secondary);border:none;padding:.75rem 1rem;text-align:left;border-radius:var(--radius-md);cursor:pointer;transition:all var(--animation-duration) var(--animation-easing);font-size:1rem}.settings-tabs .tab:hover{background-color:var(--color-bg-tertiary);color:var(--color-text-primary);transform:translate(4px)}.settings-tabs .tab.active{background:var(--gradient-primary);color:#fff;font-weight:600;box-shadow:var(--shadow-md)}.settings-content{background-color:var(--color-card-bg);padding:2rem;border-radius:var(--radius-lg);box-shadow:var(--shadow-md)}.settings-section h2{margin-bottom:.5rem;color:var(--color-text-primary);font-size:1.8rem}.section-description{color:var(--color-text-secondary);margin-bottom:2rem;font-size:1rem}.setting-item{display:flex;justify-content:space-between;align-items:center;padding:1.5rem;margin-bottom:1rem;background-color:var(--color-bg-secondary);border-radius:var(--radius-md);transition:all var(--animation-duration) var(--animation-easing)}.setting-item:hover{background-color:var(--color-bg-tertiary);transform:translate(2px)}.setting-info{flex:1}.setting-info label{display:block;font-weight:600;color:var(--color-text-primary);margin-bottom:.25rem;font-size:1.1rem}.setting-description{color:var(--color-text-secondary);font-size:.9rem;margin:0}.toggle{position:relative;display:inline-block;width:60px;height:30px;flex-shrink:0}.toggle input{opacity:0;width:0;height:0}.toggle-slider{position:absolute;cursor:pointer;top:0;left:0;right:0;bottom:0;background-color:var(--color-border-secondary);transition:.4s;border-radius:var(--radius-full)}.toggle-slider:before{position:absolute;content:"";height:22px;width:22px;left:4px;bottom:4px;background-color:#fff;transition:.4s;border-radius:50%}.toggle input:checked+.toggle-slider{background-color:var(--color-primary)}.toggle input:checked+.toggle-slider:before{transform:translate(30px)}.toggle input:disabled+.toggle-slider{opacity:.5;cursor:not-allowed}.theme-selector{display:flex;gap:.5rem}.theme-option{background-color:var(--color-bg-tertiary);color:var(--color-text-primary);border:2px solid var(--color-border-primary);padding:.75rem 1.5rem;border-radius:var(--radius-md);cursor:pointer;transition:all var(--animation-duration) var(--animation-easing);font-size:1rem;font-weight:500}.theme-option:hover{border-color:var(--color-primary);transform:translateY(-2px);box-shadow:var(--shadow-md)}.theme-option.active{background:var(--gradient-primary);color:#fff;border-color:var(--color-primary);box-shadow:var(--shadow-lg)}.theme-option:disabled{opacity:.5;cursor:not-allowed}.select-group{flex-shrink:0}.select-group select{padding:.75rem 2.5rem .75rem 1rem;background-color:var(--color-input-bg);color:var(--color-input-text);border:1px solid var(--color-input-border);border-radius:var(--radius-md);font-size:1rem;cursor:pointer;-webkit-appearance:none;-moz-appearance:none;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%239ca3af' d='M6 9L1 4h10z'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right .75rem center;background-size:12px}.select-group select:hover{border-color:var(--color-primary)}.select-group select:focus{outline:none;border-color:var(--color-input-focus);box-shadow:0 0 0 3px rgba(var(--color-primary-rgb),.1)}.select-group select:disabled{opacity:.5;cursor:not-allowed}.settings-actions{display:flex;gap:1rem;justify-content:center;margin-top:2rem;padding-top:2rem;border-top:1px solid var(--color-border-primary)}.export-button,.reset-button{padding:.75rem 1.5rem;border:none;border-radius:var(--radius-md);font-size:1rem;font-weight:600;cursor:pointer;transition:all var(--animation-duration) var(--animation-easing)}.export-button{background-color:var(--color-primary);color:#fff}.export-button:hover{background-color:var(--color-primary-dark);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.reset-button{background-color:var(--color-error);color:#fff}.reset-button:hover{background-color:var(--color-error-dark);transform:translateY(-2px);box-shadow:var(--shadow-lg)}.export-button:disabled,.reset-button:disabled{opacity:.5;cursor:not-allowed}.message{max-width:1200px;margin:0 auto 1rem;padding:1rem;border-radius:var(--radius-md);text-align:center;font-weight:600;animation:slideDown .3s ease-out}.message.success{background-color:var(--color-success-light);color:var(--color-success-dark)}.message.error{background-color:var(--color-error-light);color:var(--color-error-dark)}@keyframes slideDown{0%{opacity:0;transform:translateY(-10px)}to{opacity:1;transform:translateY(0)}}.loading-message,.error-message{text-align:center;padding:3rem;font-size:1.2rem;color:var(--color-text-secondary)}.error-message{color:var(--color-error)}@media (max-width: 768px){.settings-container{padding:1rem}.settings-header h1{font-size:2rem}.settings-layout{grid-template-columns:1fr;gap:1rem}.settings-tabs{position:static;flex-direction:row;overflow-x:auto;padding:.5rem}.settings-tabs .tab{white-space:nowrap;flex-shrink:0}.settings-tabs .tab:hover{transform:none}.settings-content{padding:1rem}.setting-item{flex-direction:column;align-items:flex-start;gap:1rem}.toggle,.theme-selector,.select-group{width:100%}.theme-selector{flex-direction:column}.theme-option,.select-group select{width:100%}.settings-actions{flex-direction:column}.export-button,.reset-button{width:100%}.back-button-container{padding:0 1rem}.primary-back-button{width:100%;padding:14px 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