[dir=rtl] .site-nav__sidebar{border-right:none;border-left:1px solid var(--color-border, #333)}[dir=rtl] .site-nav__item--active:before{left:auto;right:0;border-radius:2px 0 0 2px}[dir=rtl] .app-header__auth{margin-left:0;margin-right:auto}[dir=rtl] .app-header__menu-panel{left:auto;right:0;border-right:none;border-left:1px solid var(--color-border);transform:translate(100%)}[dir=rtl] .app-header__menu-panel--open{transform:translate(0)}[dir=rtl] .game-layout__main,[dir=rtl] .game-layout__board-and-eval,[dir=rtl] .board-container,[dir=rtl] .board{direction:ltr}[dir=rtl] .player-panel__top-row,[dir=rtl] .player-panel__left{flex-direction:row-reverse}[dir=rtl] .move-history,[dir=rtl] .move-detail-tray{direction:ltr;text-align:left}[dir=rtl] .game-controls{direction:ltr}[dir=rtl] .eval-bar{transform:scaleX(-1)}[dir=rtl] .critical-moments-rail{direction:ltr}[dir=rtl] .settings-modal{direction:rtl;text-align:right}[dir=rtl] .settings-modal__row{flex-direction:row-reverse}[dir=rtl] .help-modal{direction:rtl;text-align:right}[dir=rtl] .help-modal__header,[dir=rtl] .help-modal__detail-body{flex-direction:row-reverse}[dir=rtl] .share-modal,[dir=rtl] .rules-page,[dir=rtl] .help-page,[dir=rtl] .puzzles-page,[dir=rtl] .puzzle-card{direction:rtl;text-align:right}:root{--color-primary: #f0e8d8;--color-secondary: #a09080;--color-tertiary: #2a2520;--color-tertiary-hover:#332d28;--color-border: #3a3228;--color-border-light: #342e28;--color-surface: #221e1a;--color-bg: #1a1612;--color-gold: #d4a853;--color-gold-muted: #b8882e;--color-gold-text: #1a1510;--color-brand: #5b9cf6;--color-brand-hover: #3b7dd8;--color-brand-light: rgba(91, 156, 246, .15);--font-base: "Roboto", sans-serif;--clr-gold: var(--color-gold);--clr-border: var(--color-border);--clr-surface-1: var(--color-surface);--clr-surface-2: var(--color-tertiary);--clr-text-1: var(--color-primary);--clr-text-2: var(--color-secondary);--clr-text-3: var(--color-secondary);color-scheme:dark}@media(prefers-color-scheme:light){:root:not([data-theme=dark]){--color-primary: #1a1a1a;--color-secondary: #555;--color-tertiary: #f5f5f5;--color-tertiary-hover:#e8e8e8;--color-border: #e0e0e0;--color-border-light: #ddd;--color-surface: #fafafa;--color-bg: #ffffff;--color-gold: #b8882e;--color-gold-muted: #9e7429;--color-gold-text: #ffffff;--color-brand: #2563eb;--color-brand-hover: #1d4ed8;--color-brand-light: rgba(37, 99, 235, .12);color-scheme:light}}[data-theme=light]{--color-primary: #1a1a1a;--color-secondary: #555;--color-tertiary: #f5f5f5;--color-tertiary-hover:#e8e8e8;--color-border: #e0e0e0;--color-border-light: #ddd;--color-surface: #fafafa;--color-bg: #ffffff;--color-gold: #b8882e;--color-gold-muted: #9e7429;--color-gold-text: #ffffff;--color-brand: #2563eb;--color-brand-hover: #1d4ed8;--color-brand-light: rgba(37, 99, 235, .12);color-scheme:light}[data-theme=dark]{--color-primary: #f0e8d8;--color-secondary: #a09080;--color-tertiary: #2a2520;--color-tertiary-hover:#332d28;--color-border: #3a3228;--color-border-light: #342e28;--color-surface: #221e1a;--color-bg: #1a1612;--color-gold: #d4a853;--color-gold-muted: #b8882e;--color-gold-text: #1a1510;--color-brand: #5b9cf6;--color-brand-hover: #3b7dd8;--color-brand-light: rgba(91, 156, 246, .15);color-scheme:dark}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-base);background:var(--color-bg);color:var(--color-primary);min-height:100vh}@keyframes modal-origin-in{0%{opacity:0;transform:translate(var(--hm-dx, 0px),var(--hm-dy, 0px)) scale(.04)}to{opacity:1;transform:translate(0) scale(1)}}@keyframes modal-origin-out{0%{opacity:1;transform:translate(0) scale(1)}to{opacity:0;transform:translate(var(--hm-dx, 0px),var(--hm-dy, 0px)) scale(.04)}}@keyframes modal-backdrop-in{0%{opacity:0}to{opacity:1}}@keyframes modal-backdrop-out{0%{opacity:1}to{opacity:0}}.settings-modal__backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#00000059;backdrop-filter:blur(4px);-webkit-backdrop-filter:blur(4px);display:flex;align-items:center;justify-content:center;z-index:400;animation:modal-backdrop-in .18s ease-out}.settings-modal__backdrop--closing{animation:modal-backdrop-out .2s ease-in forwards}.settings-modal{background:var(--color-bg);border:1px solid var(--color-border);border-radius:12px;padding:20px;width:min(340px,calc(100vw - 32px));box-shadow:0 8px 32px #0006}.settings-modal__header{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.settings-modal__title{display:flex;align-items:center;gap:8px;margin:0;font-size:15px;font-weight:600;color:var(--color-primary)}.settings-modal__close{display:flex;align-items:center;justify-content:center;width:28px;height:28px;border:none;border-radius:6px;background:none;color:var(--color-secondary);cursor:pointer;font-size:14px;transition:background .15s,color .15s}.settings-modal__close:hover{background:var(--color-tertiary-hover);color:var(--color-primary)}.settings-modal__row{display:flex;align-items:center;justify-content:space-between;padding:8px 0}.settings-modal__row+.settings-modal__row{border-top:1px solid var(--color-border-light)}.settings-modal__row-label{font-size:13px;font-weight:500;color:var(--color-primary);flex-shrink:0;min-width:64px}.settings-modal__row-toggle{display:flex;flex:1;margin-left:12px;border:1px solid var(--color-border);border-radius:7px;overflow:hidden}.settings-modal__toggle-btn{display:flex;flex:1;align-items:center;justify-content:center;gap:5px;padding:6px 8px;border:none;border-right:1px solid var(--color-border);background:none;color:var(--color-secondary);cursor:pointer;font-size:13px;font-weight:500;transition:background .12s,color .12s;white-space:nowrap}.settings-modal__toggle-btn:last-child{border-right:none}.settings-modal__toggle-btn:hover:not(:disabled){background:var(--color-tertiary-hover);color:var(--color-primary)}.settings-modal__toggle-btn--active{background:var(--color-brand-light);color:var(--color-brand)}.settings-modal__toggle-btn--active:hover:not(:disabled){background:var(--color-brand-light);color:var(--color-brand)}.settings-modal__toggle-btn--disabled{opacity:.4;cursor:not-allowed}.settings-modal__board-picker{display:flex;flex:1;margin-left:12px;align-items:flex-start}.settings-modal__board-btn{display:flex;flex:1;flex-direction:column;align-items:center;justify-content:flex-start;gap:3px;padding:6px 4px;background:none;border:none;cursor:pointer;opacity:.5;transition:opacity .15s}.settings-modal__board-btn svg{border-radius:3px;display:block}.settings-modal__board-btn:hover:not(:disabled){opacity:.8}.settings-modal__board-btn--active{opacity:1}.settings-modal__board-btn-label{font-size:10px;font-weight:500;color:var(--color-secondary);white-space:normal;text-align:center;line-height:1.2}.settings-modal__board-btn--active .settings-modal__board-btn-label{color:var(--color-brand)}.settings-modal__divider{height:1px;background:var(--color-border);margin:16px 0 12px}.settings-modal__save-btn{width:100%;padding:9px 14px;border:1px solid var(--color-brand);border-radius:7px;background:none;color:var(--color-brand);font-size:13px;font-weight:600;cursor:pointer;transition:background .15s,color .15s}.settings-modal__save-btn:hover{background:var(--color-brand);color:#fff}.settings-modal__row--column{flex-direction:column;align-items:stretch;justify-content:flex-start;gap:0;padding:0}.settings-modal__row-inline{display:flex;align-items:center;justify-content:space-between;padding:8px 0}.settings-modal__avatar-right{display:flex;align-items:center;gap:8px}.settings-modal__avatar-preview{display:block;width:28px;height:28px;border-radius:50%;object-fit:cover;border:1px solid var(--color-border);flex-shrink:0}.settings-modal__country-right{display:flex;align-items:center;gap:6px}.settings-modal__country-input{width:48px;padding:5px 8px;border:1px solid var(--color-border);border-radius:6px;background:var(--color-bg);color:var(--color-primary);font-size:13px;font-weight:600;text-align:center;text-transform:uppercase;letter-spacing:.05em;transition:border-color .15s}.settings-modal__country-input:focus{outline:none;border-color:var(--color-brand)}.settings-modal__country-input:disabled{opacity:.5}.settings-modal__country-flag{font-size:18px;line-height:1;display:flex;align-items:center}.settings-modal__language-select{background:var(--color-surface-2, var(--color-bg-alt));color:var(--color-text);border:1px solid var(--color-border);border-radius:6px;padding:5px 8px;font-size:13px;cursor:pointer;max-width:160px}.settings-modal__language-select:focus{outline:none;border-color:var(--color-brand)}.site-layout{display:flex;flex-direction:column;min-height:100dvh}.site-layout__header{display:flex;align-items:center;padding:.65rem 1.25rem;background:var(--color-bg);border-bottom:1px solid var(--color-border);gap:.75rem;flex-shrink:0}.site-layout__header-link{display:flex;align-items:center;text-decoration:none}@keyframes logo-brand-a{0%,41.7%{opacity:1}50%,91.7%{opacity:0}to{opacity:1}}@keyframes logo-brand-b{0%,41.7%{opacity:0}50%,91.7%{opacity:1}to{opacity:0}}.site-layout__logo-wrap{position:relative;height:32px;width:calc(32px * 811 / 308);flex-shrink:0}.site-layout__logo{position:absolute;top:0;right:0;bottom:0;left:0;height:100%;width:100%;object-fit:contain;object-position:left center;opacity:0;animation:none}.site-layout__logo--chaturanga{animation:logo-brand-a 12s ease-in-out infinite}.site-layout__logo--shatranj{animation:logo-brand-b 12s ease-in-out infinite}.site-layout__auth{margin-left:auto;display:flex;align-items:center;gap:8px}.site-layout__user{font-size:13px;font-weight:500;color:var(--color-secondary);max-width:120px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.site-layout__oauth-btn{display:flex;align-items:center;justify-content:center;width:28px;height:28px;border-radius:50%;border:1px solid var(--color-border);background:var(--color-bg);cursor:pointer;font-size:14px;padding:0;color:var(--color-primary);transition:background-color .15s;flex-shrink:0}.site-layout__oauth-btn:hover{background:var(--color-tertiary-hover)}.site-layout__theme-btn{background:none;border:1px solid var(--color-border);border-radius:6px;color:var(--color-secondary);cursor:pointer;padding:.35rem .6rem;font-size:1rem;line-height:1;transition:color .15s,border-color .15s}.site-layout__theme-btn:hover{color:var(--color-gold, #d4a853);border-color:var(--color-gold, #d4a853)}.auth-error-modal{position:relative;background:var(--color-bg);border:1px solid var(--color-border);border-radius:12px;padding:24px 20px 20px;width:min(320px,calc(100vw - 32px));box-shadow:0 8px 32px #00000080;display:flex;flex-direction:column;align-items:center;gap:12px;text-align:center}.auth-error-modal__close{position:absolute;top:12px;right:12px}.auth-error-modal__video{width:160px;height:284px;object-fit:cover;border-radius:8px}.auth-error-modal__funny{margin:0;font-size:15px;font-weight:600;color:var(--color-primary);line-height:1.4}.auth-error-modal__reason{margin:0;font-size:12px;color:var(--color-secondary);line-height:1.4}.auth-error-modal__ok{margin-top:4px;padding:8px 24px;background:var(--color-brand);color:#000;border:none;border-radius:6px;font-size:13px;font-weight:600;cursor:pointer}.auth-error-modal__ok:hover{opacity:.85}.site-layout__prefs-avatar-btn{position:relative;padding:0;border-radius:50%;width:32px;height:32px;overflow:visible;flex-shrink:0;display:flex;align-items:center;justify-content:center}.site-layout__prefs-avatar-clip{display:block;width:30px;height:30px;border-radius:50%;overflow:hidden;flex-shrink:0}.site-layout__prefs-gear-badge{position:absolute;top:-3px;right:-3px;width:14px;height:14px;border-radius:50%;background:var(--color-bg, #1a1a1a);border:1px solid var(--color-border);display:flex;align-items:center;justify-content:center;font-size:8px;color:var(--color-secondary);line-height:1}.site-layout__prefs-avatar-btn:hover .site-layout__prefs-gear-badge{color:var(--color-gold, #d4a853);border-color:var(--color-gold, #d4a853)}.site-layout__body{display:flex;flex-direction:row;min-height:0;flex:1}.site-layout__main{flex:1;min-width:0;overflow-x:hidden;display:flex;flex-direction:column;justify-content:flex-start}.site-nav__sidebar{width:200px;flex-shrink:0;padding:12px 8px;border-right:1px solid var(--color-border);display:flex;flex-direction:column;gap:2px;background:var(--color-bg);position:sticky;top:0;height:100dvh;overflow-y:auto}.site-nav__item{display:flex;align-items:center;gap:10px;width:100%;padding:10px 14px;border:none;border-radius:8px;background:none;color:var(--color-secondary);font-size:14px;font-weight:500;cursor:pointer;text-align:left;text-decoration:none;transition:background .12s,color .12s;position:relative}.site-nav__item:hover:not(:disabled){background:var(--color-tertiary-hover, rgba(255,255,255,.06));color:var(--color-primary)}.site-nav__item--active{background:var(--color-tertiary);color:var(--color-primary);font-weight:700}.site-nav__item--active:before{content:"";position:absolute;left:0;top:25%;bottom:25%;width:3px;border-radius:0 2px 2px 0;background:var(--color-primary)}.site-nav__item:disabled{opacity:.4;cursor:default}.site-nav__icon{width:20px;height:20px;flex-shrink:0}.site-nav__divider{height:1px;background:var(--color-border);margin:6px 8px}.site-nav__nav-group{display:flex;flex-direction:column}.site-nav__group-label{display:flex;align-items:center;gap:10px;padding:8px 14px 4px;font-size:11px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--color-secondary);opacity:.6;-webkit-user-select:none;user-select:none}.site-nav__subitem{display:flex;align-items:center;gap:10px;padding:8px 14px 8px 30px;border-radius:8px;color:var(--color-secondary);font-size:13.5px;font-weight:500;text-decoration:none;transition:background .12s,color .12s;position:relative}.site-nav__subitem:not(.site-nav__subitem--disabled):hover{background:var(--color-tertiary-hover, rgba(255,255,255,.06));color:var(--color-primary)}.site-nav__subitem--disabled{opacity:.3;cursor:default;filter:blur(1.5px);pointer-events:none;-webkit-user-select:none;user-select:none}.site-nav__spacer{flex:1}.site-nav__x-link{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:8px;color:var(--color-secondary);font-size:13px;font-weight:500;text-decoration:none;transition:background .15s,color .15s}.site-nav__x-link:hover{background:var(--color-tertiary);color:var(--color-primary)}:root{--header-h: 54px}.site-layout__hamburger{display:none}.site-layout__menu-btn{display:flex;align-items:center;justify-content:center;width:36px;height:36px;background:none;border:1px solid var(--color-border);border-radius:8px;color:var(--color-secondary);cursor:pointer;font-size:1.1rem;transition:color .15s,border-color .15s}.site-layout__menu-btn:hover,.site-layout__menu-btn--open{color:var(--color-primary);border-color:var(--color-primary)}.site-layout__menu-backdrop{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000;z-index:299;pointer-events:none;transition:background .32s cubic-bezier(.4,0,.2,1)}.site-layout__menu-backdrop--open{background:#00000073;pointer-events:auto}.site-layout__menu-panel{position:fixed;top:var(--header-h);left:0;width:min(300px,82vw);height:calc(100dvh - var(--header-h));background:var(--color-bg);border-right:1px solid var(--color-border);padding:10px 8px;z-index:300;overflow-y:auto;overscroll-behavior:contain;transform:translate(-100%);transition:transform .32s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column;gap:2px}.site-layout__menu-panel--open{transform:translate(0)}body.site-menu-open{overflow:hidden}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border-width:0}.page-breadcrumb{font-size:12px;color:var(--color-secondary);margin-bottom:0;text-align:left}.page-hero:has(.page-breadcrumb),.puzzles-page__hero:has(.page-breadcrumb){padding-top:.75rem}.page-hero:has(.page-breadcrumb) h1,.puzzles-page__hero:has(.page-breadcrumb) h1{margin-top:1.5rem}.page-breadcrumb ol{list-style:none;display:flex;align-items:center;gap:4px;padding:0;margin:0;flex-wrap:wrap}.page-breadcrumb a{color:var(--color-secondary);text-decoration:none}.page-breadcrumb a:hover{color:var(--color-primary)}.page-breadcrumb li[aria-current=page]{color:var(--color-primary);font-weight:500}.page-breadcrumb__sep{color:var(--color-border);font-size:14px;-webkit-user-select:none;user-select:none}@media(max-width:768px),(min-width:769px)and (max-width:900px)and (orientation:portrait){.site-nav__sidebar{display:none}.site-layout__hamburger{display:block}}.site-footer{border-top:1px solid var(--color-border);padding:8px 16px;display:flex;flex-direction:column;align-items:center;gap:4px}.site-footer__divider{display:none}.site-footer__made-in{font-size:12px;color:var(--color-secondary)}.site-footer__x-link{display:inline-flex;align-items:center;gap:6px;font-size:12px;color:var(--color-secondary);text-decoration:none;transition:text-decoration .15s}.site-footer__x-link:hover{text-decoration:underline}.site-footer__x-icon{width:13px;height:13px}.identity-gate__overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:500;background:#0009;display:flex;align-items:flex-end;justify-content:center}@media(min-width:640px){.identity-gate__overlay{align-items:center}}.identity-gate__sheet{position:relative;background:var(--clr-surface-1);border:1px solid var(--clr-border);border-radius:16px 16px 0 0;padding:2rem 1.5rem 2.5rem;width:100%;max-width:420px;display:flex;flex-direction:column;gap:1rem}@media(min-width:640px){.identity-gate__sheet{border-radius:16px}}.identity-gate__close{position:absolute;top:1rem;right:1rem;background:none;border:none;color:var(--clr-text-2);font-size:1.1rem;cursor:pointer;padding:.25rem}.identity-gate__title{font-size:1.1rem;font-weight:600;color:var(--clr-text-1);margin:0}.identity-gate__prompt{font-size:.85rem;color:var(--clr-text-2);margin:0}.identity-gate__guest-btn{background:var(--clr-gold);color:#1a1008;border:none;border-radius:8px;padding:.7rem 1.25rem;font-size:.95rem;font-weight:600;cursor:pointer;transition:opacity .15s}.identity-gate__guest-btn:hover:not(:disabled){opacity:.85}.identity-gate__guest-btn:disabled{opacity:.6;cursor:not-allowed}.identity-gate__divider{display:flex;align-items:center;gap:.75rem;color:var(--clr-text-3);font-size:.8rem}.identity-gate__divider:before,.identity-gate__divider:after{content:"";flex:1;height:1px;background:var(--clr-border)}.identity-gate__oauth-row{display:flex;gap:.5rem;flex-wrap:wrap}.identity-gate__oauth-btn{flex:1;min-width:80px;display:flex;align-items:center;justify-content:center;gap:.4rem;padding:.55rem .75rem;border:1px solid var(--clr-border);border-radius:8px;background:var(--clr-surface-2);color:var(--clr-text-1);font-size:.8rem;cursor:pointer;transition:background .15s}.identity-gate__oauth-btn:hover{background:var(--clr-surface-3, var(--clr-surface-2));filter:brightness(1.1)}.identity-gate__oauth-btn--lichess img{filter:invert(1)}@media(prefers-color-scheme:light){:root:not([data-theme=dark]) .identity-gate__oauth-btn--lichess img{filter:none}}[data-theme=light] .identity-gate__oauth-btn--lichess img{filter:none}.guest-reveal{display:flex;flex-direction:column;align-items:center;gap:.75rem;padding:.5rem 0 .25rem;text-align:center}.guest-reveal__avatar-wrap{position:relative;width:80px;height:80px;display:flex;align-items:center;justify-content:center;margin-bottom:.25rem}.guest-reveal__avatar{width:72px;height:72px;border-radius:50%;object-fit:cover;animation:gr-avatar-pop .55s cubic-bezier(.34,1.56,.64,1) both;position:relative;z-index:2}@keyframes gr-avatar-pop{0%{transform:scale(.2) rotate(-8deg);opacity:0}60%{transform:scale(1.12) rotate(4deg);opacity:1}80%{transform:scale(.96) rotate(-1deg)}to{transform:scale(1) rotate(0);opacity:1}}.guest-reveal__ring{position:absolute;top:-4px;right:-4px;bottom:-4px;left:-4px;border-radius:50%;border:2.5px solid var(--color-gold, #d4a853);animation:gr-ring .9s cubic-bezier(.34,1.2,.64,1) .1s both;z-index:1}@keyframes gr-ring{0%{transform:scale(.4);opacity:0}50%{opacity:1}to{transform:scale(1);opacity:1}}.guest-reveal__flag{position:absolute;bottom:-2px;right:-6px;font-size:1.5rem;line-height:1;z-index:2;animation:gr-fade-up .4s ease .7s both;filter:drop-shadow(0 1px 2px rgba(0,0,0,.4))}.guest-reveal__sparkle{position:absolute;top:50%;left:50%;width:7px;height:7px;border-radius:50%;margin:-3.5px 0 0 -3.5px;background:var(--color-gold, #d4a853);animation:gr-sparkle .7s cubic-bezier(.22,1,.36,1) .15s both;transform-origin:center}.guest-reveal__sparkle:nth-child(odd){background:var(--color-gold, #d4a853)}.guest-reveal__sparkle:nth-child(2n){background:#e8a87c}.guest-reveal__sparkle:nth-child(3n){background:#7ec8a4;width:5px;height:5px;margin:-2.5px 0 0 -2.5px}@keyframes gr-sparkle{0%{transform:rotate(var(--deg)) translate(0) scale(0);opacity:1}70%{opacity:1}to{transform:rotate(var(--deg)) translate(46px) scale(1);opacity:0}}.guest-reveal__youre-in{font-size:1.25rem;font-weight:700;color:var(--color-gold, #d4a853);margin:0;animation:gr-fade-up .45s ease .5s both}.guest-reveal__name{margin:0;font-size:.85rem;color:var(--color-secondary);animation:gr-fade-up .4s ease .65s both;display:flex;flex-direction:column;gap:.15rem}.guest-reveal__name-label{font-size:.75rem;text-transform:uppercase;letter-spacing:.06em;opacity:.6}.guest-reveal__name-value{font-size:1rem;font-weight:700;color:var(--color-primary)}.guest-reveal__btn{margin-top:.5rem;background:var(--color-gold, #d4a853);color:#1a1008;border:none;border-radius:10px;padding:.65rem 1.5rem;font-size:.95rem;font-weight:700;cursor:pointer;animation:gr-fade-up .35s ease both;transition:opacity .15s,transform .12s}.guest-reveal__btn:hover{opacity:.88;transform:translateY(-1px)}@keyframes gr-fade-up{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}