.mode-selector{height:100vh;display:flex;align-items:center;justify-content:center;padding:var(--spacing-xl)}.mode-selector-content{text-align:center;max-width:900px;width:100%}.mode-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:var(--spacing-xl);margin-bottom:var(--spacing-xl)}.mode-card{background:#1e274999;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:2px solid rgba(99,102,241,.3);border-radius:var(--radius-2xl);padding:var(--spacing-2xl);cursor:pointer;transition:all var(--transition-base);position:relative;overflow:hidden}.mode-card:before{content:"";position:absolute;top:0;left:0;right:0;bottom:0;background:linear-gradient(135deg,#6366f11a,#8b5cf61a);opacity:0;transition:opacity var(--transition-base)}.mode-card:hover{transform:translateY(-8px);border-color:var(--color-accent-primary);box-shadow:var(--shadow-xl),0 0 30px #6366f14d}.mode-card:hover:before{opacity:1}.mode-icon{font-size:4rem;margin-bottom:var(--spacing-md);filter:drop-shadow(0 4px 8px rgba(0,0,0,.3))}.mode-card h3{margin-bottom:var(--spacing-sm);position:relative;z-index:1}.mode-card p{position:relative;z-index:1}.difficulty-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:var(--spacing-lg);margin-bottom:var(--spacing-xl)}.difficulty-card{background:#1e274999;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:2px solid rgba(99,102,241,.3);border-radius:var(--radius-xl);padding:var(--spacing-xl);cursor:pointer;transition:all var(--transition-base);position:relative}.difficulty-card:hover{transform:translateY(-5px);border-color:var(--color-accent-primary);box-shadow:var(--shadow-lg),0 0 20px #6366f133}.difficulty-icon{font-size:3rem;margin-bottom:var(--spacing-md)}.difficulty-card h3{margin-bottom:var(--spacing-sm)}.square{aspect-ratio:1;display:flex;align-items:center;justify-content:center;position:relative;transition:all var(--transition-fast)}.square-light{background:var(--color-board-light)}.square-dark{background:var(--color-board-dark)}.square-dark:hover{background:#a67c52}.square-selected{background:var(--color-selected)!important;box-shadow:inset 0 0 20px #6366f180}.square-valid{cursor:pointer}.square-valid:hover{background:#22c55e33!important}.valid-move-indicator{position:absolute;width:30%;height:30%;border-radius:50%;background:var(--color-valid-move);border:3px solid var(--color-success);pointer-events:none;animation:pulse 1.5s ease-in-out infinite}.square-valid .valid-move-indicator{animation:pulse 1.5s ease-in-out infinite,glow 2s ease-in-out infinite}.piece{width:80%;height:80%;border-radius:50%;cursor:pointer;transition:all var(--transition-base);display:flex;align-items:center;justify-content:center;position:relative;box-shadow:0 4px 8px #0000004d}.piece:before{content:"";position:absolute;top:4px;right:4px;bottom:4px;left:4px;border-radius:50%;background:linear-gradient(135deg,rgba(255,255,255,.3),transparent);pointer-events:none}.piece-red{background:radial-gradient(circle at 30% 30%,#ef4444,var(--color-piece-red));border:3px solid #991b1b}.piece-black{background:radial-gradient(circle at 30% 30%,#475569,var(--color-piece-black));border:3px solid #0f172a}.piece:hover{transform:scale(1.1);box-shadow:0 6px 12px #0006}.piece-selected{transform:scale(1.15);animation:pulse 1.5s ease-in-out infinite}.piece-red.piece-selected{box-shadow:0 0 20px var(--color-piece-red-glow),0 6px 12px #0006}.piece-black.piece-selected{box-shadow:0 0 20px #6366f199,0 6px 12px #0006}.piece-king{border-width:4px}.king-crown{font-size:1.5rem;filter:drop-shadow(0 2px 4px rgba(0,0,0,.5));animation:float 2s ease-in-out infinite}@keyframes float{0%,to{transform:translateY(0)}50%{transform:translateY(-3px)}}.board-container{display:flex;justify-content:center;align-items:center;padding:var(--spacing-lg)}.board{display:grid;grid-template-columns:repeat(8,1fr);grid-template-rows:repeat(8,1fr);width:min(90vmin,600px);height:min(90vmin,600px);border:4px solid var(--color-accent-primary);border-radius:var(--radius-lg);box-shadow:var(--shadow-xl),0 0 40px #6366f14d;overflow:hidden;background:var(--color-board-light)}@media (max-width: 768px){.board{width:95vmin;height:95vmin}}.game-info{display:flex;justify-content:space-between;align-items:center;gap:var(--spacing-xl);padding:var(--spacing-xl);background:#1e274999;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(99,102,241,.2);border-radius:var(--radius-xl);margin-bottom:var(--spacing-lg)}.player-info{display:flex;align-items:center;gap:var(--spacing-md);padding:var(--spacing-md);border-radius:var(--radius-lg);transition:all var(--transition-base);opacity:.6}.player-active{opacity:1;background:#6366f11a;box-shadow:0 0 20px #6366f133}.player-indicator{width:50px;height:50px;border-radius:50%;box-shadow:0 4px 8px #0000004d;position:relative}.player-indicator:before{content:"";position:absolute;top:4px;right:4px;bottom:4px;left:4px;border-radius:50%;background:linear-gradient(135deg,rgba(255,255,255,.3),transparent)}.player-indicator-black{background:radial-gradient(circle at 30% 30%,#475569,var(--color-piece-black));border:3px solid #0f172a}.player-indicator-red{background:radial-gradient(circle at 30% 30%,#ef4444,var(--color-piece-red));border:3px solid #991b1b}.player-details h3{margin:0;font-size:1.25rem}.player-details p{margin:0;font-size:.875rem}.turn-indicator{flex:1;text-align:center}.turn-text{display:flex;flex-direction:column;gap:var(--spacing-sm)}.current-turn{font-size:1.25rem;font-weight:600;color:var(--color-text-primary)}.must-capture{font-size:.875rem;color:var(--color-warning);font-weight:600;animation:pulse 1.5s ease-in-out infinite}.winner-text{font-size:1.5rem;font-weight:700;background:linear-gradient(135deg,var(--color-accent-primary),var(--color-accent-secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text;animation:glow 2s ease-in-out infinite}@media (max-width: 768px){.game-info{flex-direction:column;gap:var(--spacing-md)}.player-info{width:100%;justify-content:center}}.game-over-modal{text-align:center}.trophy-icon{font-size:5rem;margin-bottom:var(--spacing-lg);animation:float 2s ease-in-out infinite;filter:drop-shadow(0 4px 8px rgba(0,0,0,.3))}.winner-announcement{font-size:1.5rem;margin-bottom:var(--spacing-md)}.winner-name{font-weight:700;font-size:1.75rem}.winner-black{color:#94a3b8}.winner-red{color:#ef4444}.modal-actions{display:flex;gap:var(--spacing-md);justify-content:center;flex-wrap:wrap}.modal-actions .btn{min-width:150px}@keyframes float{0%,to{transform:translateY(0) rotate(0)}25%{transform:translateY(-10px) rotate(-5deg)}75%{transform:translateY(-10px) rotate(5deg)}}.local-game{height:100vh;display:flex;flex-direction:column;padding:var(--spacing-lg);overflow-y:auto}.game-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-xl);flex-wrap:wrap;gap:var(--spacing-md)}.game-header h2{flex:1;text-align:center;margin:0}.game-container{max-width:800px;margin:0 auto;width:100%}.bot-thinking{display:flex;flex-direction:column;align-items:center;gap:var(--spacing-md);margin-top:var(--spacing-lg);padding:var(--spacing-lg);background:#1e274999;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(99,102,241,.2);border-radius:var(--radius-lg)}.bot-thinking p{color:var(--color-text-secondary);font-weight:500}@media (max-width: 768px){.game-header{flex-direction:column}.game-header h2{order:-1}}.quick-chat{position:fixed;bottom:var(--spacing-lg);right:var(--spacing-lg);z-index:100}.chat-toggle{background:var(--color-accent-primary);color:#fff;border:none;padding:var(--spacing-sm) var(--spacing-md);border-radius:var(--radius-lg);cursor:pointer;font-weight:600;box-shadow:var(--shadow-lg);transition:all var(--transition-base)}.chat-toggle:hover{transform:scale(1.05);background:var(--color-accent-secondary)}.chat-panel{position:absolute;bottom:50px;right:0;width:280px;background:#141b3af2;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,102,0,.3);border-radius:var(--radius-xl);padding:var(--spacing-md);box-shadow:var(--shadow-xl)}.chat-messages{max-height:120px;overflow-y:auto;margin-bottom:var(--spacing-md);padding:var(--spacing-sm);background:#0003;border-radius:var(--radius-md)}.no-messages{color:var(--color-text-muted);text-align:center;font-size:.85rem;margin:var(--spacing-md) 0}.chat-message{padding:var(--spacing-xs) var(--spacing-sm);margin-bottom:var(--spacing-xs);border-radius:var(--radius-sm);font-size:.85rem}.chat-message.own{background:#f603;text-align:right}.chat-message.other{background:#ffffff1a}.chat-message .sender{font-weight:600;color:var(--color-accent-primary);margin-right:var(--spacing-xs)}.chat-message .text{color:var(--color-text-primary)}.quick-buttons{display:grid;grid-template-columns:repeat(4,1fr);gap:var(--spacing-xs)}.quick-btn{background:#f603;border:1px solid rgba(255,102,0,.3);border-radius:var(--radius-md);padding:var(--spacing-sm);font-size:1.2rem;cursor:pointer;transition:all var(--transition-base)}.quick-btn:hover{background:var(--color-accent-primary);transform:scale(1.1)}.chat-input-group{display:flex;gap:var(--spacing-xs);margin-bottom:var(--spacing-md)}.chat-input{flex:1;background:#0000004d;border:1px solid rgba(255,102,0,.3);border-radius:var(--radius-md);padding:var(--spacing-sm) var(--spacing-md);color:var(--color-text-primary);font-size:.85rem}.chat-input:focus{outline:none;border-color:var(--color-accent-primary)}.chat-input::placeholder{color:var(--color-text-muted)}.send-btn{background:var(--color-accent-primary);border:none;border-radius:var(--radius-md);padding:var(--spacing-sm) var(--spacing-md);color:#fff;cursor:pointer;font-size:1rem;transition:all var(--transition-base)}.send-btn:hover:not(:disabled){background:var(--color-accent-secondary)}.send-btn:disabled{opacity:.5;cursor:not-allowed}.online-game{height:100vh;display:flex;flex-direction:column;padding:var(--spacing-lg);overflow-y:auto}.online-game-waiting,.online-game-error,.online-game-loading{height:100vh;display:flex;align-items:center;justify-content:center;padding:var(--spacing-xl)}.waiting-card,.error-card{background:#1e274999;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(99,102,241,.3);border-radius:var(--radius-2xl);padding:var(--spacing-2xl);max-width:500px;width:100%;text-align:center}.room-id-display{display:flex;align-items:center;gap:var(--spacing-md);justify-content:center;margin-bottom:var(--spacing-lg)}.room-id-display code{font-size:1.5rem;font-weight:700;color:var(--color-accent-primary);background:#6366f11a;padding:var(--spacing-md) var(--spacing-lg);border-radius:var(--radius-md);border:2px solid rgba(99,102,241,.3)}.room-info{flex:1;text-align:center}.room-info h3{margin:0;font-size:1.25rem}.room-info p{margin:0;font-size:.875rem}.player-color-badge{padding:var(--spacing-sm) var(--spacing-lg);border-radius:var(--radius-full);font-weight:600;color:#fff;box-shadow:var(--shadow-md)}@media (max-width: 768px){.game-header{flex-direction:column;gap:var(--spacing-md)}.room-info{order:-1}}.lobby-container{height:100vh;display:flex;align-items:center;justify-content:center;padding:var(--spacing-xl)}.lobby-card{background:#1e274999;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(255,102,0,.3);border-radius:var(--radius-2xl);padding:var(--spacing-2xl);max-width:500px;width:100%;text-align:center}.lobby-card-wide{max-width:600px}.lobby-options{display:grid;grid-template-columns:repeat(2,1fr);gap:var(--spacing-lg);margin-bottom:var(--spacing-xl)}.lobby-option-card{background:#141b3a99;border:2px solid rgba(255,102,0,.3);border-radius:var(--radius-xl);padding:var(--spacing-xl);cursor:pointer;transition:all var(--transition-base)}.lobby-option-card:hover{transform:translateY(-5px);border-color:var(--color-accent-primary);box-shadow:var(--shadow-lg),0 0 20px #f603}.option-icon{font-size:3rem;margin-bottom:var(--spacing-md);display:flex;justify-content:center;align-items:center}.lobby-option-card h3{margin-bottom:var(--spacing-sm)}.form-group{margin-bottom:var(--spacing-lg);text-align:left}.form-group label{display:block;margin-bottom:var(--spacing-sm);font-weight:600;color:var(--color-text-secondary)}.button-group{display:flex;gap:var(--spacing-md);justify-content:center;flex-wrap:wrap}.error-message{color:var(--color-error);background:#ef44441a;padding:var(--spacing-md);border-radius:var(--radius-md);margin-bottom:var(--spacing-lg);border:1px solid rgba(239,68,68,.3)}.waiting-rooms-section{margin-top:var(--spacing-xl);padding-top:var(--spacing-xl);border-top:1px solid rgba(255,102,0,.2);text-align:left}.waiting-rooms-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:var(--spacing-lg)}.waiting-rooms-header h3{display:flex;align-items:center;gap:var(--spacing-sm);margin:0;color:var(--color-text-primary)}.waiting-rooms-list{display:flex;flex-direction:column;gap:var(--spacing-md);max-height:200px;overflow-y:auto}.waiting-room-item{display:flex;justify-content:space-between;align-items:center;background:#141b3a99;border:1px solid rgba(255,102,0,.2);border-radius:var(--radius-lg);padding:var(--spacing-md) var(--spacing-lg);transition:all var(--transition-base)}.waiting-room-item:hover{border-color:var(--color-accent-primary);background:#ff66001a}.room-info{display:flex;flex-direction:column;gap:var(--spacing-xs)}.room-host{font-weight:600;color:var(--color-text-primary)}.room-id{font-size:.85rem;color:var(--color-text-muted);font-family:monospace}.btn-sm{padding:var(--spacing-sm) var(--spacing-md);font-size:.875rem}@media (max-width: 600px){.lobby-options{grid-template-columns:1fr}}:root{--color-bg-primary: #1a0f05;--color-bg-secondary: #2a1a0a;--color-bg-tertiary: #3a2510;--color-accent-primary: #ff6600;--color-accent-secondary: #ff8533;--color-accent-tertiary: #ffaa00;--color-success: #10b981;--color-warning: #ffaa00;--color-error: #ef4444;--color-text-primary: #ffffff;--color-text-secondary: #ffe6cc;--color-text-muted: #cc9966;--color-board-light: #ffffff;--color-board-dark: #ff6600;--color-piece-red: #ffffff;--color-piece-red-glow: rgba(255, 255, 255, .5);--color-piece-black: #1a0f05;--color-piece-black-glow: rgba(26, 15, 5, .5);--color-valid-move: rgba(255, 255, 255, .4);--color-selected: rgba(255, 170, 0, .5);--spacing-xs: .25rem;--spacing-sm: .5rem;--spacing-md: 1rem;--spacing-lg: 1.5rem;--spacing-xl: 2rem;--spacing-2xl: 3rem;--radius-sm: .375rem;--radius-md: .5rem;--radius-lg: .75rem;--radius-xl: 1rem;--radius-2xl: 1.5rem;--radius-full: 9999px;--shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .1), 0 2px 4px -1px rgba(0, 0, 0, .06);--shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, .1), 0 4px 6px -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-glow: 0 0 20px rgba(99, 102, 241, .3);--transition-fast: .15s cubic-bezier(.4, 0, .2, 1);--transition-base: .25s cubic-bezier(.4, 0, .2, 1);--transition-slow: .35s cubic-bezier(.4, 0, .2, 1);--font-primary: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-display: "Outfit", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif}*{margin:0;padding:0;box-sizing:border-box}html,body{height:100%;overflow:hidden}body{font-family:var(--font-primary);background:linear-gradient(135deg,var(--color-bg-primary) 0%,var(--color-bg-secondary) 100%);color:var(--color-text-primary);line-height:1.6;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}#root{height:100%;display:flex;flex-direction:column}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);font-weight:700;line-height:1.2}h1{font-size:3rem;background:linear-gradient(135deg,var(--color-accent-primary),var(--color-accent-secondary));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}h2{font-size:2rem}h3{font-size:1.5rem}.btn{display:inline-flex;align-items:center;justify-content:center;gap:var(--spacing-sm);padding:var(--spacing-md) var(--spacing-xl);font-family:var(--font-display);font-size:1rem;font-weight:600;border:none;border-radius:var(--radius-lg);cursor:pointer;transition:all var(--transition-base);text-decoration:none;position:relative;overflow:hidden}.btn:before{content:"";position:absolute;top:50%;left:50%;width:0;height:0;border-radius:50%;background:#ffffff1a;transform:translate(-50%,-50%);transition:width var(--transition-slow),height var(--transition-slow)}.btn:hover:before{width:300px;height:300px}.btn-primary{background:linear-gradient(135deg,var(--color-accent-primary),var(--color-accent-secondary));color:#fff;box-shadow:var(--shadow-lg),var(--shadow-glow)}.btn-primary:hover{transform:translateY(-2px);box-shadow:var(--shadow-xl),0 0 30px #6366f180}.btn-secondary{background:var(--color-bg-tertiary);color:var(--color-text-primary);border:2px solid var(--color-accent-primary)}.btn-secondary:hover{background:var(--color-accent-primary);transform:translateY(-2px)}.btn-success{background:linear-gradient(135deg,var(--color-success),#059669);color:#fff}.btn-danger{background:linear-gradient(135deg,var(--color-error),#dc2626);color:#fff}.btn:disabled{opacity:.5;cursor:not-allowed;transform:none!important}.card{background:#1e274999;-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);border:1px solid rgba(99,102,241,.2);border-radius:var(--radius-xl);padding:var(--spacing-xl);box-shadow:var(--shadow-lg);transition:all var(--transition-base)}.card:hover{border-color:#6366f166;box-shadow:var(--shadow-xl),0 0 20px #6366f11a}.card-glass{background:#ffffff0d;-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid rgba(255,255,255,.1)}.input{width:100%;padding:var(--spacing-md);font-family:var(--font-primary);font-size:1rem;color:var(--color-text-primary);background:var(--color-bg-tertiary);border:2px solid rgba(99,102,241,.3);border-radius:var(--radius-md);transition:all var(--transition-base)}.input:focus{outline:none;border-color:var(--color-accent-primary);box-shadow:0 0 0 3px #6366f11a}.input::placeholder{color:var(--color-text-muted)}@keyframes fadeIn{0%{opacity:0;transform:translateY(20px)}to{opacity:1;transform:translateY(0)}}@keyframes slideIn{0%{opacity:0;transform:translate(-20px)}to{opacity:1;transform:translate(0)}}@keyframes pulse{0%,to{opacity:1}50%{opacity:.7}}@keyframes glow{0%,to{box-shadow:0 0 20px #6366f14d}50%{box-shadow:0 0 30px #6366f199}}.fade-in{animation:fadeIn var(--transition-base) ease-out}.slide-in{animation:slideIn var(--transition-base) ease-out}.container{width:100%;max-width:1400px;margin:0 auto;padding:var(--spacing-xl)}.flex{display:flex}.flex-col{flex-direction:column}.items-center{align-items:center}.justify-center{justify-content:center}.justify-between{justify-content:space-between}.gap-sm{gap:var(--spacing-sm)}.gap-md{gap:var(--spacing-md)}.gap-lg{gap:var(--spacing-lg)}.gap-xl{gap:var(--spacing-xl)}.text-center{text-align:center}.text-muted{color:var(--color-text-muted)}.mt-sm{margin-top:var(--spacing-sm)}.mt-md{margin-top:var(--spacing-md)}.mt-lg{margin-top:var(--spacing-lg)}.mt-xl{margin-top:var(--spacing-xl)}.mb-sm{margin-bottom:var(--spacing-sm)}.mb-md{margin-bottom:var(--spacing-md)}.mb-lg{margin-bottom:var(--spacing-lg)}.mb-xl{margin-bottom:var(--spacing-xl)}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000b3;-webkit-backdrop-filter:blur(5px);backdrop-filter:blur(5px);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn var(--transition-base)}.modal{background:var(--color-bg-secondary);border:1px solid rgba(99,102,241,.3);border-radius:var(--radius-2xl);padding:var(--spacing-2xl);max-width:500px;width:90%;box-shadow:var(--shadow-xl),var(--shadow-glow);animation:fadeIn var(--transition-slow)}.spinner{width:40px;height:40px;border:4px solid rgba(99,102,241,.2);border-top-color:var(--color-accent-primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:var(--color-bg-secondary)}::-webkit-scrollbar-thumb{background:var(--color-accent-primary);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--color-accent-secondary)}