@font-face{font-family:Geist;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/geist-latin-400-normal-B40WzpMT.woff2) format("woff2"),url(/assets/geist-latin-400-normal-cWY99Cna.woff) format("woff")}@font-face{font-family:Geist;font-style:normal;font-display:swap;font-weight:500;src:url(/assets/geist-latin-500-normal-CTWBw9NS.woff2) format("woff2"),url(/assets/geist-latin-500-normal-CHEM4JuE.woff) format("woff")}@font-face{font-family:Geist;font-style:normal;font-display:swap;font-weight:600;src:url(/assets/geist-latin-600-normal-CSETrqM2.woff2) format("woff2"),url(/assets/geist-latin-600-normal-BeQEdSAO.woff) format("woff")}@font-face{font-family:Geist;font-style:normal;font-display:swap;font-weight:700;src:url(/assets/geist-latin-700-normal-CFi8mLqe.woff2) format("woff2"),url(/assets/geist-latin-700-normal-RGxhsL9r.woff) format("woff")}@font-face{font-family:Geist Mono;font-style:normal;font-display:swap;font-weight:400;src:url(/assets/geist-mono-latin-400-normal-DKaoCDn5.woff2) format("woff2"),url(/assets/geist-mono-latin-400-normal-BXAprPdR.woff) format("woff")}@font-face{font-family:Geist Mono;font-style:normal;font-display:swap;font-weight:500;src:url(/assets/geist-mono-latin-500-normal-C3sF8Y1B.woff2) format("woff2"),url(/assets/geist-mono-latin-500-normal-YfPbDI_o.woff) format("woff")}:root{--bg: #f7f5f0;--surface: #fdfcf9;--surface2: #f1ede4;--ink: #1a1814;--text-soft: #585249;--text-muted: #938b7e;--accent: #9a5a2f;--accent-soft: #ead9c9;--focus: #b06a38;--radius-sm: 8px;--radius-md: 12px;--fs-body: .95rem;--fs-sm: .82rem;--fs-label: .69rem;--accent-rgb: 154, 90, 47;--ink-rgb: 26, 24, 20;--font-geist-sans: "Geist", system-ui, -apple-system, sans-serif;--font-geist-mono: "Geist Mono", ui-monospace, "Courier New", monospace;--font-ui: var(--font-geist-sans);--font-mono: var(--font-geist-mono);--font-display: var(--font-geist-sans);--board-bg: #c59a63;--board-border: rgba(58, 36, 21, .55);--board-light: #d8bf9d;--board-dark: #9f6a34;--white-piece: #ffffff;--black-piece: #0f0f12;--highlight-move: #8fd694;--highlight-capture: #e85d5a;--selected-piece: #f5b942;--player-bg: var(--surface);--player-active: #fff8ef;--shell-bg: var(--bg);--nav-bg: var(--surface);--sidebar-bg: var(--surface);--gold: var(--accent);--gold-bright: var(--focus);--gold-border: rgba(var(--accent-rgb), .22);--gold-subtle: rgba(var(--accent-rgb), .08);--cream: var(--ink);--cream-dim: var(--text-soft);--cream-muted: var(--text-muted);--panel: var(--surface);--panel-border: rgba(var(--ink-rgb), .08);--text: var(--ink);--muted: var(--text-muted);--accent-strong: #7a4a28;--shadow: rgba(var(--ink-rgb), .06);--shadow-strong: rgba(var(--ink-rgb), .12)}*{box-sizing:border-box}body{margin:0;padding:16px 20px 40px;background:radial-gradient(ellipse at 12% 0%,rgba(var(--accent-rgb),.05) 0%,transparent 50%),radial-gradient(ellipse at 88% 100%,rgba(var(--accent-rgb),.04) 0%,transparent 50%),var(--bg);min-height:100vh;overflow-x:hidden;color:var(--ink);font-family:var(--font-ui);font-size:var(--fs-body);line-height:1.6}button,select{font:inherit}button:focus-visible,select:focus-visible,input:focus-visible{outline:2px solid var(--focus);outline-offset:2px}.app-shell{max-width:1280px;margin:0 auto;position:relative}.app-header{display:flex;align-items:baseline;gap:20px;padding:0 4px 14px;border-bottom:1px solid var(--panel-border);margin-bottom:16px}.app-header-brand{display:flex;align-items:baseline;gap:8px}.app-header-chess{font-family:var(--font-ui);font-size:clamp(1.5rem,2.8vw,1.85rem);font-weight:700;color:var(--ink);letter-spacing:-.02em}.app-header-x{font-family:var(--font-ui);font-size:1.1rem;font-weight:400;color:var(--text-muted)}.app-header-ttt{font-family:var(--font-ui);font-size:clamp(1.5rem,2.8vw,1.85rem);font-weight:700;color:var(--accent);letter-spacing:-.02em}.app-header-tagline{margin:0;font-family:var(--font-ui);font-size:var(--fs-sm);font-weight:400;color:var(--text-soft)}.app-body{display:grid;grid-template-columns:304px 1fr 268px;gap:14px;align-items:start}.app-sidebar{display:flex;border-radius:var(--radius-md);overflow:hidden;box-shadow:0 1px 2px var(--shadow),0 8px 24px var(--shadow);position:sticky;top:16px;max-height:calc(100vh - 100px);border:1px solid var(--panel-border);background:var(--surface)}.app-nav-rail{width:64px;flex-shrink:0;background:var(--surface);border-right:1px solid var(--panel-border);display:flex;flex-direction:column;padding:8px 6px;gap:4px}.nav-tab-btn{display:flex;flex-direction:column;align-items:center;gap:5px;padding:14px 4px 12px;width:100%;border:0;background:transparent;color:var(--text-muted);cursor:pointer;position:relative;transition:color .2s,background .2s;font-family:var(--font-ui);font-size:var(--fs-label);font-weight:600;letter-spacing:.06em;text-transform:uppercase;line-height:1;border-radius:var(--radius-sm)}.nav-tab-btn:hover{color:var(--text-soft);background:rgba(var(--ink-rgb),.03)}.nav-tab-active{color:var(--ink)!important;background:var(--surface2)!important}.nav-tab-active:before{display:none}.nav-tab-label{line-height:1}.app-sidebar-panel{flex:1;background:var(--sidebar-bg);display:flex;flex-direction:column;overflow-y:auto;overflow-x:hidden;min-width:0;min-height:0}.sidebar-status-strip{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:10px 12px;border-bottom:1px solid var(--panel-border);flex-shrink:0;flex-wrap:wrap;min-width:0}.sidebar-score-btn{display:flex;align-items:center;gap:5px;background:var(--surface);border:1px solid var(--gold-border);border-radius:var(--radius-sm);padding:5px 9px;cursor:pointer;color:var(--ink);font-family:var(--font-ui);font-size:var(--fs-sm);font-weight:600;transition:border-color .2s,background .2s;line-height:1;flex-shrink:0}.sidebar-score-btn:hover{border-color:rgba(var(--accent-rgb),.45);background:var(--gold-subtle)}.sidebar-score-piece{font-size:15px}.sidebar-score-num{font-weight:700}.sidebar-score-sep{color:var(--cream-muted);font-size:11px}.sidebar-phase-chip{flex-shrink:1;min-width:0}.chip-phase,.chip-winner{display:inline-block;padding:4px 8px;border-radius:4px;font-family:var(--font-ui);font-size:var(--fs-label);font-weight:700;letter-spacing:.04em;white-space:nowrap;max-width:100%;overflow:hidden;text-overflow:ellipsis}.chip-phase{background:var(--gold-subtle);border:1px solid var(--gold-border);color:var(--gold)}.chip-winner{background:rgba(var(--accent-rgb),.12);border:1px solid var(--accent);color:var(--focus)}.tab-panel{padding:14px 14px 20px;display:flex;flex-direction:column;gap:14px;flex:1;color:var(--cream);font-family:var(--font-ui);min-width:0;overflow-x:hidden}.tab-panel-intro{margin:0;font-size:13px;line-height:1.6;color:var(--cream-dim)}.rules-list{margin:0;padding:0;list-style:none;display:flex;flex-direction:column;gap:10px}.rules-item{display:flex;gap:10px;align-items:flex-start;font-size:13px;line-height:1.5;color:var(--cream-dim)}.rules-item strong{color:var(--cream)}.rules-num{flex-shrink:0;width:20px;height:20px;border-radius:50%;background:var(--gold-subtle);border:1px solid var(--gold-border);color:var(--gold);font-size:11px;font-weight:700;display:flex;align-items:center;justify-content:center;margin-top:1px}.about-pieces{border-top:1px solid var(--panel-border);padding-top:12px;display:flex;flex-direction:column;gap:9px}.about-piece-row{display:grid;grid-template-columns:22px minmax(0,56px) minmax(0,1fr);align-items:center;gap:8px}.about-piece-sym{font-size:17px;text-align:center;color:var(--cream)}.about-piece-name{font-size:13px;font-weight:600;color:var(--cream)}.about-piece-desc{font-size:12px;color:var(--cream-muted)}.field-group{display:flex;flex-direction:column;gap:5px}.field-label{font-size:11px;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--cream-dim)}.tab-panel .ui-select{background:var(--surface);border-color:var(--panel-border);color:var(--ink);background-image:linear-gradient(45deg,transparent 50%,var(--text-muted) 50%),linear-gradient(135deg,var(--text-muted) 50%,transparent 50%),var(--surface)}.tab-panel .ui-select:focus-visible{outline-color:var(--gold);border-color:var(--gold)}.bot-thinking-strip{display:flex;align-items:center;gap:7px;padding:10px 12px;background:var(--gold-subtle);border:1px solid var(--gold-border);border-radius:var(--radius-sm);color:var(--accent);font-size:var(--fs-sm);font-weight:500}.bot-dot{width:6px;height:6px;border-radius:50%;background:var(--gold);animation:dot-pulse 1.2s ease-in-out infinite;flex-shrink:0}.bot-dot:nth-child(2){animation-delay:.2s}.bot-dot:nth-child(3){animation-delay:.4s}@keyframes dot-pulse{0%,80%,to{transform:scale(.55);opacity:.35}40%{transform:scale(1);opacity:1}}.local-turn-display{display:flex;align-items:center;gap:10px;padding:14px 16px;background:var(--gold-subtle);border:1px solid var(--gold-border);border-radius:10px}.local-turn-piece{font-size:24px;line-height:1}.local-turn-text{font-size:15px;font-weight:600;color:var(--cream)}.local-turn-winner{font-family:var(--font-ui);font-size:1.05rem;font-weight:700;color:var(--accent)}.conn-pill{align-self:flex-start;padding:4px 10px;border-radius:999px;font-size:var(--fs-label);font-weight:700;text-transform:capitalize;letter-spacing:.04em;background:var(--surface2);color:var(--text-soft)}.conn-pill-connected{background:#16a34a1a;color:#15803d}.conn-pill-connecting{background:rgba(var(--accent-rgb),.1);color:var(--accent)}.conn-pill-disconnected,.conn-pill-error{background:#dc262614;color:#b42318}.online-status-text{margin:0;padding:10px 12px;background:var(--surface2);border:1px solid var(--panel-border);border-radius:var(--radius-sm);font-size:var(--fs-sm);line-height:1.5;color:var(--text-soft)}.online-or-divider{display:flex;align-items:center;gap:10px;color:var(--cream-muted);font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.1em}.online-or-divider:before,.online-or-divider:after{content:"";flex:1;height:1px;background:var(--panel-border)}.join-form{display:flex;flex-direction:column;gap:8px}.tab-panel .ui-input{background:var(--surface);border-color:var(--panel-border);color:var(--ink)}.tab-panel .ui-input::placeholder{color:var(--cream-muted)}.tab-panel .ui-input:focus-visible{outline-color:var(--gold);border-color:var(--gold)}.room-code-input{font-family:var(--font-mono);font-size:18px;font-weight:500;letter-spacing:.22em;text-align:center}.room-card-v2{padding:14px;background:var(--surface2);border:1px solid var(--gold-border);border-radius:var(--radius-sm);display:flex;flex-direction:column;gap:10px}.room-card-header{display:flex;flex-direction:column;gap:3px}.room-card-meta-label{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.1em;color:var(--cream-muted)}.room-card-code{font-family:var(--font-mono);font-size:26px;font-weight:500;color:var(--gold-bright);letter-spacing:.2em;line-height:1}.room-card-info{display:flex;flex-direction:column;gap:2px;font-size:12px;color:var(--cream-dim)}.room-card-actions{display:flex;gap:6px;flex-wrap:wrap}.room-card-copy-error{margin:0;font-size:var(--fs-sm);color:#b42318}.online-error-msg{margin:0;padding:8px 10px;background:#dc26260f;border:1px solid rgba(220,38,38,.16);border-radius:var(--radius-sm);font-size:var(--fs-sm);font-weight:600;color:#b42318}.tab-panel .ui-button-secondary{background:var(--surface);border-color:var(--panel-border);color:var(--ink)}.tab-panel .ui-button-secondary:hover:not(:disabled){background:var(--surface2);border-color:rgba(var(--accent-rgb),.35);box-shadow:none}.tab-panel .ui-button-ghost{color:var(--text-soft);background:transparent}.tab-panel .ui-button-ghost:hover:not(:disabled){color:var(--ink);background:rgba(var(--ink-rgb),.04)}.ui-button{display:inline-flex;align-items:center;justify-content:center;gap:8px;border:1px solid transparent;border-radius:999px;cursor:pointer;font-weight:600;font-family:var(--font-ui);line-height:1;min-height:38px;transition:background-color .18s ease,border-color .18s ease,box-shadow .18s ease,transform .18s ease}.ui-button:hover:not(:disabled){transform:translateY(-1px)}.ui-button:active:not(:disabled){transform:translateY(0)}.ui-button:disabled{cursor:not-allowed;opacity:.4}.ui-button-sm{min-height:32px;padding:6px 10px;font-size:12px}.ui-button-md{padding:10px 14px;font-size:14px}.ui-button-lg{min-height:48px;padding:14px 22px;font-size:16px}.ui-button-primary{background:var(--ink);color:var(--surface);box-shadow:none}.ui-button-primary:hover:not(:disabled){background:#2a2720;box-shadow:0 4px 14px rgba(var(--ink-rgb),.14)}.ui-button-secondary{background:var(--surface);border-color:var(--panel-border);color:var(--ink);box-shadow:none}.ui-button-secondary:hover:not(:disabled){border-color:rgba(var(--accent-rgb),.35);background:var(--surface2)}.ui-button-ghost{background:transparent;color:var(--text-soft)}.ui-button-danger{background:#b42318;color:#fff}.ui-select{width:100%;min-height:38px;padding:8px 34px 8px 12px;border:1px solid var(--panel-border);border-radius:var(--radius-sm);background:linear-gradient(45deg,transparent 50%,var(--text-muted) 50%),linear-gradient(135deg,var(--text-muted) 50%,transparent 50%),var(--surface);background-position:calc(100% - 18px) 50%,calc(100% - 13px) 50%,100% 0;background-size:5px 5px,5px 5px,2.5rem 100%;background-repeat:no-repeat;color:var(--ink);cursor:pointer;appearance:none;font-family:var(--font-ui)}.ui-input{width:100%;min-height:38px;padding:8px 12px;border:1px solid var(--panel-border);border-radius:var(--radius-sm);background:var(--surface);color:var(--ink);font-family:var(--font-mono);font-weight:600;letter-spacing:.08em;text-transform:uppercase}.btn-full{width:100%}.link-button{background:none;border:none;color:var(--accent);text-decoration:underline;cursor:pointer;font-size:inherit;font-weight:600;padding:0}.link-button:hover{color:var(--focus)}.board-area{background:var(--surface);border:1px solid var(--panel-border);border-radius:var(--radius-md);padding:18px;box-shadow:0 1px 2px var(--shadow),0 10px 30px var(--shadow);display:flex;flex-direction:column;align-items:center;gap:14px}.right-sidebar{background:var(--surface);border:1px solid var(--panel-border);border-radius:var(--radius-md);box-shadow:0 1px 2px var(--shadow),0 8px 24px var(--shadow);overflow:hidden;position:sticky;top:16px;max-height:calc(100vh - 100px)}.error-message{padding:10px 14px;background:#ffe6e6;border-left:4px solid #ff4444;border-radius:8px;color:#c00;font-weight:500;font-size:14px;width:100%}.winner-overlay{position:fixed;inset:0;background:rgba(var(--ink-rgb),.45);display:flex;align-items:center;justify-content:center;z-index:1000;animation:fadeIn .3s ease-in;cursor:pointer}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.winner-modal{background:var(--surface);padding:48px 40px;border-radius:var(--radius-md);border:1px solid var(--panel-border);text-align:center;max-width:400px;box-shadow:0 20px 50px var(--shadow-strong);animation:slideUp .4s ease-out;cursor:default}@keyframes slideUp{0%{transform:translateY(50px);opacity:0}to{transform:translateY(0);opacity:1}}.winner-icon{font-size:80px;margin-bottom:24px;animation:bounceIn .6s ease-in-out;display:block}@keyframes bounceIn{0%,to{transform:translateY(0)}25%{transform:translateY(-20px)}50%{transform:translateY(0)}75%{transform:translateY(-10px)}}.winner-title{font-family:var(--font-ui);font-size:clamp(2rem,5vw,2.75rem);font-weight:700;margin:0 0 16px;color:var(--ink);letter-spacing:-.02em}.winner-title .accent{color:var(--accent)}.winner-score{font-size:1.05rem;color:var(--text-soft);margin-bottom:32px;font-weight:600}.play-again-btn{min-width:180px}.play-again-btn:hover{box-shadow:0 4px 14px rgba(var(--ink-rgb),.14)}.click-hint{margin-top:24px;font-size:var(--fs-sm);color:var(--text-muted)}.modal-close{display:block;margin:18px auto 0}.player-panel{padding:12px 14px;background:var(--surface2);border-radius:var(--radius-sm);transition:all .3s;border:1px solid var(--panel-border);width:100%}.player-panel.active{background:var(--player-active);border-color:rgba(var(--accent-rgb),.35);box-shadow:0 4px 16px rgba(var(--accent-rgb),.1)}.player-w{border-top:3px solid #f4efe7}.player-b{border-top:3px solid #171717}.player-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:10px}.player-header h3{margin:0;font-size:1rem;display:flex;align-items:center;gap:8px;font-family:var(--font-ui);font-weight:700;color:var(--text)}.turn-indicator{color:#0f7b45;font-size:13px;font-weight:600;animation:blink 2s ease-in-out infinite}@keyframes blink{0%,to{opacity:1}50%{opacity:.5}}.pieces-container{display:grid;grid-template-columns:repeat(4,1fr);gap:10px}.piece-card{padding:9px 6px;background:var(--surface);border:1px solid var(--panel-border);border-radius:var(--radius-sm);cursor:pointer;transition:all .2s;display:flex;flex-direction:column;align-items:center;gap:4px}.piece-card:hover:not(:disabled){transform:translateY(-2px);box-shadow:0 4px 12px var(--shadow);border-color:rgba(var(--accent-rgb),.35)}.piece-card.selected{border-color:var(--selected-piece);background:#fff7dc;box-shadow:0 0 0 3px #f5b94238}.piece-card:disabled{opacity:.38;cursor:not-allowed}.piece-card.captured .piece-symbol{opacity:.28;text-decoration:line-through}.piece-card.on-board{background:#eef6f1;border-color:#0f7b4542}.piece-symbol{font-size:30px;line-height:1}.piece-name{font-size:10px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.3px}.piece-state{font-size:10px;color:#999}.board-container{margin:6px 0 10px;display:flex;justify-content:center;width:100%}.board{display:grid;grid-template-columns:repeat(4,1fr);grid-template-rows:repeat(4,1fr);border:5px solid var(--board-border);border-radius:var(--radius-sm);overflow:hidden;background:linear-gradient(90deg,rgba(255,255,255,.08),transparent 22%,rgba(0,0,0,.08) 58%,transparent),var(--board-bg);box-shadow:inset 0 0 0 1px #ffffff2e,0 22px 50px #26160a4d;aspect-ratio:1;width:min(100%,400px);box-sizing:border-box}.square{width:100%;height:100%;border:0;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:box-shadow .2s,filter .2s;position:relative;font-size:48px;padding:0}.square:before{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(255,255,255,.08),transparent 26%,rgba(0,0,0,.06) 70%,transparent),repeating-linear-gradient(90deg,rgba(255,255,255,.04) 0 2px,transparent 2px 18px);pointer-events:none;mix-blend-mode:soft-light}.square.light-square{background:linear-gradient(135deg,#ddc7aa,#cdb28d)}.square.dark-square{background:linear-gradient(135deg,#a46d34,#865223)}.square:hover:not(:disabled){filter:brightness(1.08) saturate(1.04);box-shadow:inset 0 0 0 4px #fff3}.square.highlighted{box-shadow:inset 0 0 0 4px #8fd694e6,inset 0 0 36px #8fd6945c}.square.highlighted.capture{box-shadow:inset 0 0 0 4px #e85d5ae6,inset 0 0 36px #e85d5a5c}.board-piece{position:relative;z-index:1;font-size:clamp(44px,7vw,62px);line-height:1;filter:drop-shadow(0 8px 6px rgba(0,0,0,.22));transition:transform .2s}.board-piece.player-w{color:var(--white-piece);text-shadow:-1px -1px 0 #1f2937,1px -1px 0 #1f2937,-1px 1px 0 #1f2937,1px 1px 0 #1f2937,0 3px 5px rgba(0,0,0,.5)}.board-piece.player-b{color:var(--black-piece);text-shadow:0 1px 0 rgba(255,255,255,.15),0 3px 5px rgba(0,0,0,.4)}.square:hover .board-piece{transform:translateY(-2px) scale(1.04)}.square-coordinate{position:absolute;top:5px;left:7px;z-index:1;color:#21191280;font-size:10px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;font-family:var(--font-mono)}.dark-square .square-coordinate{color:#fffaf28c}.board.replay-mode{opacity:.9;border-color:var(--accent)}.board.replay-mode .square{cursor:default}.board.replay-mode .square:hover{transform:none;box-shadow:none}.instructions{padding:10px 14px;background:var(--surface2);border:1px solid var(--panel-border);border-radius:var(--radius-sm);text-align:center;width:100%}.instructions p{margin:0;font-size:var(--fs-sm);color:var(--text-soft);font-weight:500;font-family:var(--font-ui)}.instructions .online-turn-text{margin-bottom:5px;color:var(--accent);font-size:var(--fs-body);font-weight:700}.draw-actions{display:flex;flex-wrap:wrap;align-items:center;justify-content:center;gap:8px;width:100%}.draw-offer-pending{margin:0;font-size:var(--fs-sm);color:var(--text-soft);text-align:center}.move-history{margin:0;padding:14px;border-radius:14px;background:transparent;display:flex;flex-direction:column;height:100%;max-height:calc(100vh - 100px)}.move-history-list{flex:1;overflow-y:auto;display:flex;flex-direction:column;gap:5px;max-height:none}.move-history-list::-webkit-scrollbar{width:6px}.move-history-list::-webkit-scrollbar-track{background:#0000000a;border-radius:3px}.move-history-list::-webkit-scrollbar-thumb{background:rgba(var(--accent-rgb),.35);border-radius:3px}.move-history-list::-webkit-scrollbar-thumb:hover{background:rgba(var(--accent-rgb),.55)}.move-history-title{margin:0 0 10px;font-family:var(--font-ui);font-size:var(--fs-body);font-weight:700;color:var(--ink);text-align:center;padding-bottom:8px;border-bottom:1px solid var(--panel-border)}.move-history-empty{text-align:center;padding:20px;color:var(--text-muted);font-style:italic;font-size:var(--fs-sm)}.move-history-entry{display:flex;align-items:center;gap:8px;width:100%;padding:7px 10px;background:var(--surface2);border-radius:var(--radius-sm);font-size:var(--fs-sm);transition:all .2s ease;border:2px solid transparent;text-align:left;cursor:default}.move-history-entry:hover:not(:disabled){transform:translate(3px);box-shadow:0 2px 6px var(--shadow)}.move-history-entry.white-move{border-left:3px solid var(--accent-soft);background:linear-gradient(90deg,var(--surface) 0%,var(--surface2) 100%)}.move-history-entry.black-move{border-left:3px solid var(--ink);background:linear-gradient(90deg,var(--surface2) 0%,#e8e2d8 100%)}.move-number{font-weight:700;color:var(--accent);min-width:22px;text-align:right}.move-player{font-size:16px;min-width:22px;text-align:center}.move-notation{flex:1;font-weight:500;color:var(--text-soft);font-family:var(--font-mono);font-size:var(--fs-sm)}.move-history-entry.viewing{border:2px solid rgba(var(--accent-rgb),.45);background:linear-gradient(90deg,#fff8ef 0%,var(--surface) 100%);box-shadow:0 3px 10px rgba(var(--accent-rgb),.12);transform:scale(1.015)}.move-history-entry.clickable{cursor:pointer}.move-history-entry.clickable:hover{border-color:rgba(var(--accent-rgb),.45)}.viewing-indicator{font-size:var(--fs-sm);color:var(--accent);font-weight:600}.move-history-controls{display:flex;gap:6px;margin-top:10px;padding-top:10px;border-top:1px solid var(--panel-border);justify-content:center}.nav-btn{flex:1}.nav-btn.live-btn{flex:.8}@media(max-width:1100px){.app-body{grid-template-columns:1fr;max-width:680px;margin:0 auto}.app-sidebar{position:static;max-height:none;flex-direction:row}.app-nav-rail{width:auto;flex-direction:row;padding:6px;border-right:0;border-bottom:1px solid var(--panel-border);flex-shrink:0}.nav-tab-btn{flex-direction:row;gap:6px;padding:12px 16px;font-size:10px;flex:1;justify-content:center}.app-sidebar{flex-direction:column}.right-sidebar{position:static;max-height:360px}.board-area{order:0}.app-sidebar{order:-1}.right-sidebar{order:1}}@media(max-width:640px){body{padding:10px 10px 30px}.app-header{flex-direction:column;gap:4px;padding-bottom:10px;margin-bottom:12px}.app-header-chess,.app-header-ttt{font-size:22px}.app-header-tagline{font-size:13px}.board-area{padding:12px}.board{width:min(100%,320px);border-width:5px}.board-piece{font-size:40px}.pieces-container{gap:6px}.piece-symbol{font-size:24px}.piece-card{padding:7px 4px}.right-sidebar{max-height:280px}.nav-tab-label{display:none}.nav-tab-btn{padding:12px 8px}.move-history-controls{flex-wrap:wrap}.nav-btn{padding:7px 10px;font-size:12px}}@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation-duration:.001ms!important;animation-iteration-count:1!important;scroll-behavior:auto!important;transition-duration:.001ms!important}}