*,:before,:after{box-sizing:border-box;margin:0;padding:0}:root{--bg-primary:#302e2b;--bg-secondary:#272522;--bg-surface:#3a3834;--bg-hover:#4a4844;--text-primary:#ebebe7;--text-secondary:#b0aea8;--text-muted:#7a7874;--accent:#81b64c;--accent-hover:#91c65c;--danger:#c33;--board-light:#f0d9b5;--board-dark:#b58863;--selected-light:#829769;--selected-dark:#6d8b54;--lastmove-light:#cdd26a;--lastmove-dark:#aaa23a;--check:red;--sidebar-width:300px;--topbar-height:56px;color:var(--text-primary);background:var(--bg-primary);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;font-size:14px}body{min-height:100vh;overflow-x:hidden}button{cursor:pointer;font:inherit;color:inherit;background:0 0;border:none}input,textarea{font:inherit}.app{flex-direction:column;min-height:100vh;display:flex}.main-content{flex-direction:column;flex:1;display:flex}.loading-screen{flex-direction:column;justify-content:center;align-items:center;gap:16px;height:100vh;display:flex}.spinner{font-size:48px;animation:1s linear infinite spin}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.cc-topbar{height:var(--topbar-height);background:var(--bg-secondary);border-bottom:1px solid var(--bg-surface);z-index:100;justify-content:space-between;align-items:center;padding:0 16px;display:flex;position:sticky;top:0}.cc-topbar-left{align-items:center;gap:24px;display:flex}.cc-logo{color:var(--text-primary);align-items:center;gap:8px;font-size:18px;font-weight:700;display:flex}.cc-logo-icon{font-size:24px}.cc-nav{gap:4px;display:flex}.cc-nav-btn{color:var(--text-secondary);border-radius:6px;padding:8px 16px;font-size:14px;font-weight:500;transition:all .15s}.cc-nav-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.cc-nav-btn.active{background:var(--accent);color:#fff}.cc-nav-btn:disabled{opacity:.4;cursor:not-allowed}.cc-topbar-right{align-items:center;gap:12px;display:flex}.cc-login-btn{background:var(--accent);color:#fff;border-radius:6px;align-items:center;gap:8px;padding:8px 16px;font-size:13px;font-weight:600;transition:background .15s;display:flex}.cc-login-btn:hover{background:var(--accent-hover)}.cc-lichess-logo{font-size:18px}.cc-user-menu{align-items:center;gap:8px;display:flex}.cc-username{font-weight:500}.cc-icon-btn{width:32px;height:32px;color:var(--text-secondary);border-radius:6px;justify-content:center;align-items:center;transition:all .15s;display:flex}.cc-icon-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.home-page{flex:1;justify-content:center;align-items:center;padding:40px 16px;display:flex}.hero{text-align:center;max-width:480px}.hero-icon{margin-bottom:16px;font-size:80px;line-height:1}.hero h1{margin-bottom:8px;font-size:42px;font-weight:700}.hero-subtitle{color:var(--text-secondary);margin-bottom:32px;font-size:16px}.hero-actions{margin-bottom:40px}.hero-btn{border-radius:8px;padding:14px 48px;font-size:18px;font-weight:600;transition:all .15s;display:inline-block}.hero-btn.primary{background:var(--accent);color:#fff}.hero-btn.primary:hover{background:var(--accent-hover);transform:translateY(-1px)}.hero-features{flex-direction:column;align-items:center;gap:12px;display:flex}.feature{color:var(--text-secondary);align-items:center;gap:8px;font-size:14px;display:flex}.feature-icon{font-size:18px}.lobby{width:100%;max-width:600px;margin:0 auto;padding:24px 16px}.lobby-header{align-items:center;gap:16px;margin-bottom:24px;display:flex}.lobby-back{color:var(--text-secondary);border-radius:6px;padding:8px 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.15s}.time-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.time-btn.active{background:var(--accent);color:#fff}.lobby-error{color:var(--danger);margin-bottom:16px;font-size:13px}.play-btn{background:var(--accent);color:#fff;border-radius:8px;width:100%;padding:14px;font-size:16px;font-weight:600;transition:all .15s}.play-btn:hover{background:var(--accent-hover)}.play-btn:disabled{opacity:.6;cursor:not-allowed}.game-view{justify-content:center;gap:24px;width:100%;max-width:1200px;margin:0 auto;padding:24px 16px;display:flex}.game-board-column{flex-direction:column;align-items:center;gap:4px;display:flex}.board-frame{width:min(75vh,75vw,560px);position:relative}.board{aspect-ratio:1;border-radius:4px;flex-direction:column;width:100%;display:flex;overflow:hidden;box-shadow:0 8px 32px #0000004d}.board-row{flex:1;display:flex}.sq{cursor:pointer;flex:1;justify-content:center;align-items:center;display:flex;position:relative}.sq.light{background:var(--board-light)}.sq.dark{background:var(--board-dark)}.sq.selected.light{background:var(--selected-light)}.sq.selected.dark{background:var(--selected-dark)}.sq.last-move.light{background:var(--lastmove-light)}.sq.last-move.dark{background:var(--lastmove-dark)}.sq.check{background:var(--check)!important}.dot{pointer-events:none;background:#00000026;border-radius:50%;width:25%;height:25%;position:absolute}.capture-ring{pointer-events:none;border:4px solid #00000026;border-radius:50%;width:90%;height:90%;position:absolute}.piece{cursor:grab;z-index:1;justify-content:center;align-items:center;width:88%;height:88%;transition:none;display:flex}.piece:active{cursor:grabbing}.piece img{object-fit:contain;pointer-events:none;width:100%;height:100%}.piece-unicode{pointer-events:none;font-size:min(6vw,6vh,48px);line-height:1}.cc-player-bar{background:var(--bg-secondary);border-radius:6px;justify-content:space-between;align-items:center;gap:8px;width:min(75vh,75vw,560px);padding:8px 12px;display:flex}.cc-player-bar.active{background:var(--accent);color:#fff}.cc-player-info{align-items:center;gap:6px;display:flex}.cc-player-icon{font-size:12px}.cc-player-name{font-size:13px;font-weight:600}.cc-player-title,.cc-player-rating{color:var(--text-muted);font-size:12px}.cc-player-bar.active 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.15s}.sidebar-btn:hover{background:var(--bg-hover)}.sidebar-btn.resign{color:var(--danger)}.sidebar-btn.draw{color:var(--text-secondary)}.sidebar-btn.leave{background:var(--bg-surface);color:var(--text-primary)}.sidebar-btn.leave:hover{background:var(--bg-hover)}.move-history-header{text-transform:uppercase;letter-spacing:.5px;color:var(--text-muted);margin-bottom:12px;font-size:13px;font-weight:600}.move-list{max-height:400px;overflow-y:auto}.move-pair{align-items:center;gap:4px;padding:2px 0;display:flex}.move-num{width:28px;color:var(--text-muted);text-align:right;font-size:12px}.move-btn{font-variant-numeric:tabular-nums;text-align:left;color:var(--text-primary);border-radius:4px;flex:1;padding:4px 8px;font-size:13px;transition:all .1s}.move-btn:hover{background:var(--bg-hover)}.move-btn.active{background:var(--accent);color:#fff;font-weight:600}.modal-backdrop{z-index:1000;background:#0009;justify-content:center;align-items:center;display:flex;position:fixed;inset:0}.modal{background:var(--bg-secondary);border-radius:12px;width:90%;max-width:400px;padding:32px;position:relative}.modal-close{width:32px;height:32px;color:var(--text-muted);border-radius:50%;justify-content:center;align-items:center;display:flex;position:absolute;top:12px;right:12px}.modal-close:hover{background:var(--bg-hover);color:var(--text-primary)}.modal-body{text-align:center}.modal-body h2{margin-bottom:12px;font-size:24px}.modal-desc{color:var(--text-secondary);margin-bottom:24px;line-height:1.5}.modal-cta{justify-content:center;margin:0 auto 16px;padding:12px 24px;font-size:15px}.modal-note{color:var(--text-muted);font-size:12px;line-height:1.4}.promotion-dialog{background:var(--bg-secondary);text-align:center;border-radius:12px;padding:24px}.promotion-dialog h3{color:var(--text-secondary);margin-bottom:16px}.promotion-pieces{justify-content:center;gap:8px;display:flex}.promotion-piece-btn{background:var(--bg-surface);border-radius:8px;justify-content:center;align-items:center;width:64px;height:64px;transition:all .15s;display:flex}.promotion-piece-btn:hover{background:var(--accent)}.promotion-piece-btn img{width:48px;height:48px}.waiting-screen{flex:1;justify-content:center;align-items:center;padding:40px 16px;display:flex}.waiting-card{background:var(--bg-secondary);text-align:center;border-radius:12px;width:100%;max-width:480px;padding:40px}.waiting-card .spinner{margin-bottom:16px;font-size:64px}.waiting-card h2{margin-bottom:8px;font-size:22px}.waiting-card p{color:var(--text-secondary);margin-bottom:20px}.challenge-link{gap:8px;margin-bottom:20px;display:flex}.challenge-link input{background:var(--bg-surface);border:1px solid var(--bg-hover);color:var(--text-primary);border-radius:6px;flex:1;padding:10px 12px;font-size:13px}.challenge-link button{background:var(--accent);color:#fff;white-space:nowrap;border-radius:6px;padding:10px 16px;font-weight:600}.challenge-link button:hover{background:var(--accent-hover)}.waiting-hint{color:var(--text-muted);font-style:italic}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--bg-hover);border-radius:3px}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}@media (width<=768px){.game-view{flex-direction:column;align-items:center;padding:12px 8px}.game-sidebar{width:100%;max-width:min(75vh,75vw,560px)}.board-frame,.cc-player-bar{width:min(90vw, 90vh - var(--topbar-height))}.cc-nav{display:none}}.modal-settings{max-width:500px}.settings-section{margin-top:16px}.settings-section h3{color:#bababa;margin-bottom:8px;font-size:14px}.settings-desc{color:#8a8a8a;margin-bottom:12px;font-size:12px;line-height:1.5}.settings-desc code{background:#3a3834;border-radius:3px;padding:1px 4px;font-size:11px}.settings-desc a{color:#81b64c}.settings-token-input{color:#e8e6e3;background:#1a1a1a;border:1px solid #4a4844;border-radius:4px;outline:none;width:100%;padding:10px 12px;font-family:monospace;font-size:13px}.settings-token-input:focus{border-color:#81b64c}.settings-actions{gap:8px;margin-top:12px;display:flex}.settings-btn{cursor:pointer;border:none;border-radius:4px;padding:8px 16px;font-size:13px;font-weight:600}.settings-btn.primary{color:#1a1a1a;background:#81b64c}.settings-btn.primary:disabled{opacity:.5;cursor:not-allowed}.settings-btn.danger{color:#fff;background:#c33}.board-container,.board-wrapper{position:relative}.arrow-layer{pointer-events:none;z-index:5;width:100%;height:100%;position:absolute;top:0;left:0}.coord{pointer-events:none;font-size:10px;font-weight:700;line-height:1;position:absolute}.sq.light .coord{color:#00000080}.sq.dark .coord{color:#ffffffb3}.sq .coord-file{bottom:2px;right:3px}.sq .coord-rank{top:2px;left:3px}.sq.premove{background:var(--premove-color,#00000029)!important}.eval-bar{flex-shrink:0;display:flex;position:relative;overflow:hidden}.eval-bar-v{background:#000;border-radius:3px;flex-direction:column;width:24px;min-height:400px}.eval-bar-h{background:#000;border-radius:3px;flex-direction:row;width:100%;height:16px}.eval-bar-fill{background:#fff;transition:height .3s,width .3s}.eval-bar-v .eval-bar-fill{background:linear-gradient(#f0f0f0 0%,#fff 100%);width:100%}.eval-bar-h .eval-bar-fill{background:linear-gradient(90deg,#fff 0%,#f0f0f0 100%);height:100%}.eval-bar-text{white-space:nowrap;pointer-events:none;font-size:10px;font-weight:700;position:absolute}.eval-bar-text-white{color:#222;bottom:4px;left:50%;transform:translate(-50%)}.eval-bar-text-black{color:#ddd;top:4px;left:50%;transform:translate(-50%)}.eval-bar-text-h{color:#ccc;font-size:10px;font-weight:700;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.eval-bar-dots{letter-spacing:2px;font-size:16px;animation:1.5s infinite evalDots;position:absolute;bottom:20px;left:50%;transform:translate(-50%)}.eval-bar-line{color:#888;white-space:nowrap;text-overflow:ellipsis;max-width:22px;font-size:7px;position:absolute;bottom:2px;left:50%;overflow:hidden;transform:translate(-50%)}@keyframes evalDots{0%,20%{opacity:.3}50%{opacity:1}80%,to{opacity:.3}}.clock-display{font-variant-numeric:tabular-nums;align-items:center;gap:4px;display:inline-flex}.clock-time{font-size:18px;font-weight:600}.clock-label{color:#888;font-size:11px}.clock-active .clock-time{color:#e8e6e3}.clock-low .clock-time{color:#e04040;animation:1s infinite clockPulse}@keyframes clockPulse{0%,to{opacity:1}50%{opacity:.5}}.captured-pieces{align-items:center;gap:1px;display:inline-flex}.captured-piece-img{width:16px;height:16px}.captured-mat{color:#888;margin-left:2px;font-size:11px}.move-tag-icon{margin-left:2px;font-size:10px;font-weight:700}.move-btn .move-tag-icon{vertical-align:middle}.opening-name{color:#81b64c;padding:4px 8px;font-size:12px;display:block}.hero-quick{flex-wrap:wrap;justify-content:center;gap:8px;margin-top:12px;display:flex}.hero-btn{color:#e8e6e3;cursor:pointer;background:#3a3834;border:1px solid #4a4844;border-radius:6px;padding:10px 20px;font-size:14px;font-weight:600;transition:background .15s}.hero-btn:hover{background:#4a4844}.hero-btn.primary{color:#1a1a1a;background:#81b64c;border-color:#81b64c}.hero-btn.primary:hover{background:#92c85d}.toggle-group{flex-wrap:wrap;gap:4px;display:flex}.toggle-btn{color:#bababa;cursor:pointer;background:#2a2824;border:1px solid #4a4844;border-radius:4px;padding:6px 12px;font-size:12px;transition:all .15s}.toggle-btn:hover{background:#3a3834}.toggle-btn.active{color:#1a1a1a;background:#81b64c;border-color:#81b64c}.toggle-grid{flex-wrap:wrap;gap:4px;margin-top:6px;display:flex}.settings-modal{flex-direction:column;max-width:600px;max-height:80vh;display:flex}.settings-scroll{flex:1;padding:0 4px;overflow-y:auto}.settings-unsaved{color:#f0c040;margin-top:4px;font-size:12px}.setting-row{justify-content:space-between;align-items:center;padding:6px 0;display:flex}.setting-label{color:#bababa;font-size:13px}.setting-control{align-items:center;gap:8px;display:flex}.settings-select{color:#e8e6e3;background:#1a1a1a;border:1px solid #4a4844;border-radius:4px;outline:none;padding:4px 8px;font-size:12px}.settings-range{accent-color:#81b64c;width:100px}.theme-grid{grid-template-columns:repeat(auto-fill,minmax(80px,1fr));gap:6px;display:grid}.theme-btn{cursor:pointer;background:#2a2824;border:2px solid #0000;border-radius:6px;flex-direction:column;align-items:center;gap:4px;padding:6px;transition:border-color .15s;display:flex}.theme-btn.active{border-color:#81b64c}.theme-swatch{background:linear-gradient(135deg, var(--l) 50%, var(--d) 50%);border-radius:3px;width:40px;height:24px;display:block}.theme-name{color:#bababa;text-align:center;font-size:10px}.categories-grid{grid-template-columns:repeat(2,1fr);gap:4px;display:grid}.checkbox-label{color:#bababa;cursor:pointer;align-items:center;gap:6px;font-size:13px;display:flex}.checkbox-label input[type=checkbox]{accent-color:#81b64c}.newgame-modal{max-width:500px}.import-modal,.export-modal{max-width:550px}.import-textarea,.export-textarea{color:#e8e6e3;resize:vertical;background:#1a1a1a;border:1px solid #4a4844;border-radius:4px;outline:none;width:100%;margin-bottom:8px;padding:8px;font-family:monospace;font-size:12px}.import-textarea:focus,.export-textarea:focus{border-color:#81b64c}.import-error{color:#e05050;margin-top:8px;font-size:12px}.export-section{margin-top:12px}.export-section h3{color:#bababa;margin-bottom:4px;font-size:13px}.confirm-modal{text-align:center;max-width:380px}.confirm-modal h3{margin-bottom:8px}.confirm-modal p{color:#bababa;margin-bottom:16px;font-size:14px}.modal-actions{justify-content:flex-end;gap:8px;margin-top:16px;display:flex}:root{--light-sq:#ebecd0;--dark-sq:#779556;--last-move-light:#f6f682;--last-move-dark:#baca2b;--check-sq:radial-gradient(circle, #ff5050f2 0%, #ff505066 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