:root{--bg:#100717;--paper:#24112e;--ink:#fff4df;--muted:#bdb0c3;--line:#79533870;--green:#f0c763;--green2:#ffdc85;--gold:#f0c763;--lime:#f0c763;--soft:#32183d;--red:#ffaaa3;--radius:20px;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif;color:var(--ink);background:var(--bg);font-synthesis:none;color-scheme:dark}
*{box-sizing:border-box}body{margin:0;line-height:1.55;background:radial-gradient(ellipse at 72% 0%,#63255d49,transparent 58%),url('./assets/marble.webp') center top/900px 900px scroll}button,input,select{font:inherit}button,a,input,select{-webkit-tap-highlight-color:transparent}button{cursor:pointer;color:inherit}button:disabled{cursor:default;opacity:.45}button:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible{outline:3px solid #ffdb78;outline-offset:4px}a{color:var(--gold);text-underline-offset:3px}svg{display:block}img{display:block;max-width:100%}h1,h2,h3,p{margin:0}h1{font-size:clamp(28px,3vw,38px);letter-spacing:-1.1px;line-height:1.2;font-weight:750}h2{font-size:22px;letter-spacing:-.4px;line-height:1.35}h3{font-size:17px;letter-spacing:-.25px;line-height:1.4}p{color:var(--muted)}small{font-size:12px}.icon{width:21px;height:21px;flex:none;stroke-width:1.8}.row{display:flex;align-items:center;gap:12px}.between{justify-content:space-between}.wrap{flex-wrap:wrap}.stack{display:flex;flex-direction:column;gap:16px}.hidden{display:none!important}.muted{color:var(--muted)}.small{font-size:13px}.eyebrow{font-size:10px;font-weight:700;letter-spacing:1.6px;text-transform:uppercase;color:#dbb766}.gold-text,.green-text{color:var(--gold)}.divider{height:1px;background:var(--line);margin:20px 0}.spacer{flex:1}.bold{font-weight:700}
.card{background:linear-gradient(135deg,#2c1536eb,#1c0e26f5);border:1px solid var(--line);border-radius:var(--radius);padding:24px;box-shadow:0 12px 30px #05020725,inset 0 1px #ffda7710}.card:where(button){text-align:left;width:100%}.link-card{text-decoration:none;color:inherit;transition:border-color .16s,transform .16s}.link-card:hover{border-color:#cb9d4d;transform:translateY(-2px)}.tag,.pill{display:inline-flex;align-items:center;gap:6px;border:1px solid var(--line);background:#27132f;border-radius:99px;padding:5px 10px;color:#e7cb91;font-size:11px;white-space:nowrap}.tag .icon,.pill .icon{width:15px;height:15px}.pill{padding:8px 12px}.btn{display:inline-flex;align-items:center;justify-content:center;gap:9px;border:1px solid #bd914e;border-radius:13px;min-height:46px;padding:11px 18px;font-size:13px;font-weight:650;text-decoration:none;transition:filter .15s,transform .15s;line-height:1.45;text-align:center}.btn:active{transform:scale(.98)}.btn:hover{filter:brightness(1.12)}.btn.primary,.btn.lime{background:linear-gradient(135deg,#ffdfa0,#e6b747);color:#25132d;border-color:#ffd677;box-shadow:0 4px 16px #df9a201a}.btn.secondary{background:linear-gradient(160deg,#3c1b49,#201029);color:var(--ink);border-color:#a77c48}.btn.secondary .icon,.btn.ghost .icon{color:var(--gold)}.btn.ghost{background:transparent;border-color:var(--line);color:var(--muted)}.btn.danger{background:#4b202d;border-color:#94535e;color:var(--red)}.btn.full{width:100%}.icon-btn{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;border-radius:50%;border:1px solid #b78b45;background:linear-gradient(150deg,#3d1b45,#180b23);color:var(--gold);flex:none}.icon-btn:hover{background:#4c2559}.text-btn{display:inline-flex;align-items:center;gap:7px;border:0;background:none;color:var(--gold);font-size:12px;font-weight:650;padding:9px 0;text-decoration:none;line-height:1.5}.text-btn .icon{width:16px;height:16px}.progress-track{height:6px;border-radius:20px;background:#4b3056;overflow:hidden}.progress-fill{height:100%;border-radius:20px;background:linear-gradient(90deg,#bc8741,#ffdc82);transition:width .3s}.skip-link{position:fixed;top:-100px;left:18px;z-index:200;padding:14px;background:var(--paper);color:var(--gold)}.skip-link:focus{top:10px}
.sidebar{position:fixed;inset:0 auto 0 0;width:234px;z-index:30;display:flex;flex-direction:column;padding:30px 20px;background:linear-gradient(180deg,#190b22f5,#13091bf9);border-right:1px solid var(--line)}.brand{display:flex;align-items:center;gap:10px;color:var(--ink);text-decoration:none;font-size:22px;font-weight:800;letter-spacing:-.8px;white-space:nowrap}.brand-mark{width:42px;height:42px;border-radius:13px;overflow:hidden;flex:none;border:1px solid #ad7b3d}.brand-mark img{width:100%;height:100%;object-fit:cover;transform:scale(1.18)}.brand small{display:block;font-size:8px;text-transform:uppercase;font-weight:600;letter-spacing:1.8px;margin-top:2px;color:var(--muted);white-space:normal}.nav-label{margin:37px 13px 15px;font-size:9px;letter-spacing:2px;color:#9f899d;font-weight:650}.nav{display:flex;flex-direction:column;gap:6px}.nav a{display:flex;align-items:center;gap:12px;color:#c9bacd;text-decoration:none;border:1px solid transparent;border-radius:12px;padding:13px 14px;font-size:13px;font-weight:550}.nav a .icon{color:#b89a7a}.nav a:hover{background:#2f1939}.nav a.active{border-color:#9f773e;background:linear-gradient(100deg,#513051,#2b1737);color:var(--gold)}.nav a.active .icon{color:var(--gold)}.count{margin-left:auto;font-size:10px;opacity:.7}.sidebar-bottom{margin-top:auto}.goal-note{border:1px solid var(--line);background:#28152e;border-radius:15px;padding:18px;margin-top:25px}.goal-note>.icon{color:var(--gold);margin-bottom:12px}.goal-note .eyebrow{font-size:9px;display:block}.goal-note strong{display:block;margin:7px 0;color:#f6d898;font-size:20px}.goal-note p{font-size:11px;line-height:1.8}.profile{display:flex;align-items:center;gap:9px;margin-top:24px}.profile>div{min-width:0;flex:1}.profile strong{display:block;font-size:12px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.profile p{font-size:8px;line-height:1.6;margin-top:3px}.profile .icon-btn{width:30px;height:30px}.profile .icon-btn .icon{width:15px;height:15px}.avatar{width:34px;height:34px;display:grid;place-items:center;border:1px solid #bb9349;border-radius:50%;background:#3f2247;color:var(--gold);font-size:11px;font-weight:700;flex:none}
.app-main{margin-left:234px;padding:0 38px 35px;min-width:0}.content{max-width:1150px;margin:auto}.topbar{height:91px;max-width:1150px;margin:auto auto 27px;display:flex;align-items:center;justify-content:space-between;gap:15px;border-bottom:1px solid var(--line)}.topbar-label{font-size:11px;color:var(--ink)}.topbar-label span{color:#a590ad;margin-left:15px}.topbar-tools{display:flex;align-items:center;gap:12px;flex:none}.mobile-brand{display:none}.language-picker{display:flex;flex-direction:column;gap:9px;margin:18px 0;color:var(--muted);font-size:12px;font-weight:550}.language-picker select{width:100%;min-width:0}.language-picker.compact{margin:0;display:block}.language-picker.compact select{padding:8px;width:62px;font-size:11px;min-height:40px;background:#23122d;border-color:#92703d;border-radius:12px}.personal-greeting{display:flex;align-items:center;justify-content:space-between;gap:12px;font-size:11px;color:#bcacc3;margin:-10px 0 23px}.personal-greeting>span{min-width:0;overflow-wrap:anywhere}.personal-greeting strong{color:#f5d391}.personal-greeting .text-btn{font-size:10px;flex:none}.personal-greeting .icon{width:14px;height:14px}.page-heading{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:25px}.page-heading>div{min-width:0}.page-heading h1,.page-heading p,.game-status{overflow-wrap:anywhere}.page-heading p{font-size:12px;margin-top:9px;line-height:1.8}.bottom-nav{display:none}
.hero{position:relative;display:grid;grid-template-columns:1.05fr 1fr;min-height:345px;overflow:hidden;border:1px solid #ad7b42;border-radius:23px;background:#190b25;box-shadow:0 10px 50px #0004}.hero-content{padding:34px;position:relative;z-index:2;align-self:center}.hero h1{font-size:clamp(32px,3.6vw,48px);letter-spacing:-1.7px;line-height:1.13;margin:17px 0}.hero em{font-style:normal;color:var(--gold)}.hero p{font-size:12px;line-height:1.85;max-width:340px}.hero .btn{margin-top:24px}.hero-art{position:relative;align-self:stretch;overflow:hidden}.hero-art img{width:100%;height:100%;object-fit:cover;object-position:center;min-height:345px}.hero-art:after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,#190b25,transparent 28%);pointer-events:none}.stat-grid,.progress-metrics{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px;margin:22px 0 27px}.stat{display:flex;align-items:center;gap:15px;padding:22px}.stat>div{min-width:0}.stat-icon{display:grid;place-items:center;width:44px;height:44px;flex:none;background:#40213f;border:1px solid #b78b453b;border-radius:13px;color:#f0c763}.stat-label{color:var(--muted);font-size:10px;line-height:1.5}.stat-number{font-size:29px;color:#fff3df;font-weight:750;letter-spacing:-.7px;margin-top:3px}.stat-number>span{font-size:12px;color:#ae9cb5;font-weight:400}.section-heading{display:flex;align-items:center;justify-content:space-between;gap:12px;margin:28px 0 16px}.section-heading h2{font-size:21px}.train-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:16px}.training-card{display:flex;flex-direction:column;gap:16px;position:relative;min-height:220px}.tile-icon,.lesson-symbol{display:flex;align-items:center;justify-content:center;flex:none;background:#41223f;border:1px solid #d3a35340;color:var(--gold);width:45px;height:45px;border-radius:13px}.tile-icon .icon{width:25px;height:25px}.training-card .arrow{position:absolute;right:22px;top:28px;color:var(--gold)}.training-card h3{font-size:16px;margin-bottom:7px}.training-card p{font-size:11px;line-height:1.8}.card-footer{display:flex;justify-content:space-between;gap:8px;color:var(--muted);font-size:9px;margin-top:auto;flex-wrap:wrap}.training-card .progress-track{height:4px}.home-bottom{display:grid;grid-template-columns:1.2fr 1fr;gap:20px;margin-top:22px}.home-bottom h3{font-size:15px}.check-step{display:flex;align-items:center;gap:11px;border-bottom:1px solid var(--line);padding:13px 0;font-size:12px}.check-step .duration{margin-left:auto;flex:none;font-size:10px;color:#b8a0bc}.step-circle{display:grid;place-items:center;width:24px;height:24px;flex:none;border:1px solid #93713d;border-radius:50%;color:var(--gold);font-size:10px}.check-step.done .step-circle{background:#d6ac58;color:#211329}.tip-card h3{margin-top:12px}.tip-card p{font-size:12px;line-height:1.9;margin-top:10px}.app-foot{display:flex;align-items:center;justify-content:space-between;gap:15px;color:#a28ba8;font-size:9px;margin-top:28px}.app-foot .text-btn{font-size:9px;color:#ccb58d}
.filters{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin:0 0 17px}.chip{display:inline-flex;align-items:center;border:1px solid #8a644365;background:#26132e;border-radius:99px;color:#d8cadb;min-height:38px;padding:8px 14px;font-size:11px;font-weight:550;text-decoration:none;line-height:1.5}.chip.active{background:linear-gradient(120deg,#9e703b,#d0a14e);color:#1d0e25;border-color:#f0c763}.filter-row{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:23px}.filter-row .small{font-size:11px}.search-input,select,input[type=text]{padding:12px 14px;border:1px solid #8c694660;background:#190d22;border-radius:11px;color:var(--ink);min-height:45px;max-width:100%}select option{background:#24112e;color:var(--ink)}.filter-row select{font-size:11px}.puzzle-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:13px}.puzzle-tile{padding:19px;min-height:145px;position:relative}.puzzle-tile .number{font-size:10px;letter-spacing:1px;color:#c4a572}.puzzle-tile h3{font-size:14px;margin:13px 0 9px}.tile-meta{font-size:10px;color:var(--muted)}.puzzle-tile .solved-icon{position:absolute;right:15px;top:15px;color:#dfd094;width:17px;height:17px}.puzzle-tile.solved{border-color:#9a8045;background:linear-gradient(135deg,#352039,#24152b)}.difficulty-dots{display:inline-flex;gap:3px;margin-right:6px;vertical-align:middle}.difficulty-dots i{width:5px;height:9px;border-radius:2px;background:#5b3b62}.difficulty-dots .on{background:#d6aa53}.empty{text-align:center;padding:45px 22px}.empty h3{margin-bottom:12px}.empty p{font-size:12px;line-height:1.85}.empty .btn{margin-top:20px}
.lesson-group-title{margin:29px 0 15px;color:#c4a878;font-size:11px;font-weight:650;letter-spacing:1px;text-transform:uppercase}.lesson-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}.lesson-card{display:flex;align-items:center;gap:16px;min-height:107px;padding:20px}.lesson-card>div{min-width:0}.lesson-card .arrow{margin-left:auto;flex:none;width:16px;height:16px;color:var(--gold)}.lesson-number{font-size:9px;letter-spacing:1.3px;color:#bfa37b;margin-bottom:5px}.lesson-card h3{font-size:14px}.lesson-card p{font-size:10px;margin-top:6px}.lesson-card.done{border-color:#a7864e}.lesson-card.done .lesson-symbol{color:#e9d68a;background:#483443}
.breadcrumbs{display:flex;align-items:center;gap:10px;font-size:11px;color:var(--muted);margin-bottom:20px;flex-wrap:wrap}.breadcrumbs .text-btn{font-size:11px}.breadcrumbs .icon{width:15px;height:15px}.exercise-layout{display:grid;grid-template-columns:minmax(280px,1.15fr) minmax(275px,.85fr);gap:27px;align-items:start}.board-area{min-width:0}.player-label{display:flex;align-items:center;gap:10px;padding:9px 12px;border:1px solid #a37b42;border-radius:99px;background:linear-gradient(130deg,#3c1a43,#1b0c25);margin:0 0 13px;font-size:12px;min-width:0;box-shadow:inset 0 1px #ffdb6e1a}.player-label strong{font-weight:650;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;max-width:42%}.player-label.bottom{margin:13px 0 0}.player-side{font-size:10px;color:var(--muted)}.side-token{width:28px;height:28px;display:grid;place-items:center;flex:none;border:1px solid #c29b50;border-radius:50%;background:#f2dfb6;color:#32143c}.side-token.black{background:#170c21;color:#f4d68c}.side-token .icon{width:17px;height:17px}.turn-label{margin-left:auto;display:flex;align-items:center;gap:5px;font-size:9px;color:#f2d88d;white-space:nowrap}.turn-label:before{content:"";width:5px;height:5px;border-radius:50%;background:#edc768}.board-frame{padding:4px;background:linear-gradient(130deg,#ffdf83,#8c5b28 40%,#f3cb6a 65%,#a57235);border:1px solid #ffe4a1;border-radius:3px;max-width:560px;width:100%;margin:auto;box-shadow:0 10px 35px #05020770,0 0 12px #dca3451a}.board{display:grid;grid-template-columns:repeat(8,minmax(0,1fr));aspect-ratio:1;width:100%;overflow:hidden;touch-action:manipulation}.square{position:relative;display:flex;align-items:center;justify-content:center;border:0;border-radius:0;padding:0;aspect-ratio:1;min-width:0;line-height:1;overflow:hidden;user-select:none}.square.light{background:#f4e7c9 url('./assets/ivory.webp') center/250px;color:#69472c}.square.dark{background:#35153f url('./assets/marble.webp') center/460px;color:#f4d693}.square:nth-child(3n){background-position:33% 47%}.square:nth-child(7n){background-position:70% 80%}.square.last-move:after{content:"";position:absolute;inset:0;background:#e1bb3359;pointer-events:none}.square.selected{box-shadow:inset 0 0 0 4px #f5b935!important}.square.selected:after{content:"";position:absolute;inset:0;background:#eabd3b75;pointer-events:none}.square.hint-square{box-shadow:inset 0 0 0 4px #ffcb4e!important}.square.king-check{background:radial-gradient(#da626b,#7c2347)!important}.square:focus-visible{outline:3px solid #fff49b;outline-offset:-3px;z-index:4}.piece{width:88%;height:88%;position:relative;z-index:2;pointer-events:none;filter:none}.piece-detail{fill:none;stroke:currentColor;stroke-width:1.5}.king-cross{fill:#efc458}.rank-label,.file-label{position:absolute;z-index:3;font-size:clamp(8px,.85vw,11px);font-weight:750;line-height:1;pointer-events:none;text-shadow:0 1px 2px #0001}.rank-label{top:4px;left:3px}.file-label{bottom:3px;right:3px}.move-dot{position:absolute;z-index:3;width:23%;height:23%;border-radius:50%;background:#a7741966;box-shadow:0 0 0 1px #edbd6940;pointer-events:none}.dark .move-dot{background:#f8d87590}.capture-ring{position:absolute;inset:3%;border:5px solid #e2b84a99;border-radius:50%;z-index:3;pointer-events:none}.board-controls{display:flex;align-items:center;justify-content:space-between;gap:9px;margin-top:17px}.board-controls .btn{min-height:40px;padding:9px 14px;font-size:11px}.board-controls .icon-btn{width:38px;height:38px}.board-controls .icon-btn .icon{width:18px;height:18px}.board-helper{font-size:10px;line-height:1.8;margin-top:12px;text-align:center}.captured{display:flex;align-items:center;flex-wrap:wrap;gap:0;min-height:28px;margin-top:9px;color:#bda6bf;font-size:10px}.captured .piece{width:24px;height:24px;flex:none}.exercise-info h2{font-size:27px;margin:15px 0 12px;letter-spacing:-.7px}.intro{font-size:13px;line-height:1.9}.exercise-instruction{margin:20px 0;background:#3a203f;border:1px solid #bc944b55;border-radius:12px;padding:15px;font-size:12px;line-height:1.8;color:#e2d3d9}.exercise-instruction>.icon{color:var(--gold);display:inline-block;vertical-align:middle;margin-right:8px;width:18px;height:18px}.exercise-instruction>strong{color:#f7db9d}.exercise-instruction>div{margin-top:9px;color:#cbbbcf;font-size:11px}.feedback{border:1px solid #c5a45c60;background:#34213d;color:#e8dac8;padding:16px;font-size:12px;line-height:1.9;border-radius:12px;margin:18px 0}.feedback strong{display:block;font-size:14px;color:#ffe7ac;margin-bottom:9px}.feedback.success{border-color:#cab46c;background:#33302e}.feedback.wrong{background:#452234;border-color:#a3616c;color:#ffcdc7}.hint-box{padding:15px;background:#442b3b;border:1px solid #b8925066;border-radius:12px;color:#ffe5ae;font-size:12px;line-height:1.85;margin:17px 0}.helper-caption{font-size:10px;line-height:1.85;margin-top:14px;color:#b7a2bd}.helper-caption .icon{display:inline-block;width:12px;height:12px;vertical-align:middle}.solution-notation{display:flex;gap:6px;flex-wrap:wrap;margin:17px 0}.move-tag{border:1px solid #b98e4b70;border-radius:7px;padding:6px 9px;background:#443044;font-size:12px;color:#ffe4a5}.move-tag.opponent{background:#1c1126;color:#bcaec7;border-color:#725482}.quiz-options{display:flex;flex-direction:column;gap:10px;margin-top:17px}.quiz-option{width:100%;text-align:left;padding:14px 16px;border:1px solid #8b6342;border-radius:12px;background:#2b1735;font-size:13px}.quiz-option:hover{background:#4a2b4d;border-color:#e6be62}.no-board{display:grid;place-items:center;min-height:280px;border:1px solid var(--line);border-radius:20px;background:#24122be0}.no-board .icon{width:100px;height:100px;stroke-width:1;color:#ebbd63}.exercise-mobile-summary{display:none}
.bot-setup{display:grid;grid-template-columns:.85fr 1.15fr;gap:23px}.bot-preview{display:flex;position:relative;flex-direction:column;align-items:center;justify-content:center;text-align:center;overflow:hidden;min-height:410px;background:radial-gradient(circle at 50% 35%,#74406266,transparent 60%),#1e0f29 url('./assets/marble.webp') center/700px}.bot-avatar{width:130px;height:130px;border:1px solid #d0a14f;border-radius:50%;display:grid;place-items:center;margin-bottom:23px;box-shadow:0 0 40px #e9a82d26;background:#2e143c}.bot-avatar .piece{width:105px;height:105px}.bot-preview h2{font-size:37px;color:#fff1d3}.bot-rank{font-size:11px;letter-spacing:2px;color:#edc76e;margin-top:8px}.bot-preview p{font-size:12px;max-width:240px;line-height:1.9;margin-top:22px}.setup-card h3{margin-top:9px}.elo-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:9px;margin:20px 0 15px}.elo-option{border:1px solid #8c674f;border-radius:10px;background:#25142f;color:#e0cddd;font-size:13px;font-weight:600;padding:11px 5px;min-height:42px}.elo-option.active{border-color:#f6ce6b;color:#29152e;background:linear-gradient(130deg,#fadd9b,#dbaa43)}.setup-label{display:block;font-size:12px;font-weight:650;margin:22px 0 12px}.segmented{display:flex;gap:8px}.segmented button{flex:1;min-width:0;min-height:42px;border:1px solid #8a6448;background:#281432;border-radius:10px;padding:10px 5px;font-size:12px}.segmented button.active{border-color:#e7bc65;color:#ffe1a1;background:#523047}.switch-row{display:flex;align-items:center;gap:12px;margin:18px 0;font-size:12px;line-height:1.8}.switch-row input{width:18px;height:18px;accent-color:#e5bb60;flex:none}.resume-banner{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:22px}.resume-banner strong{font-size:13px}.resume-banner p{font-size:11px;margin-top:5px}.game-status{font-size:25px!important}.move-list{display:grid;grid-template-columns:32px 1fr 1fr;gap:0;max-height:230px;overflow:auto;margin-top:14px;font-size:12px;scrollbar-width:thin}.move-list>span{padding:8px 7px;border-bottom:1px solid #6d4d6b35}.move-list .move-num{color:#9f88a8}.move-list .current{background:#53354e;border-radius:6px;color:#ffe4a3}.placeholder{grid-column:1/-1;padding:24px 0;font-size:12px;color:#a38aaa}.game-result{padding:20px 0}.game-result h3{font-size:16px;margin-bottom:9px}.game-result p{font-size:12px;line-height:1.8}.thinking{display:inline-flex;gap:4px;flex:none}.thinking i{width:5px;height:5px;background:#f2c05f;border-radius:50%;animation:pulse 1.3s infinite}.thinking i:nth-child(2){animation-delay:.18s}.thinking i:nth-child(3){animation-delay:.36s}@keyframes pulse{50%{opacity:.3;transform:translateY(-2px)}}
.settings-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:21px}.settings-grid h3{margin-bottom:14px}.settings-grid p{font-size:12px;line-height:1.9}.settings-grid .btn{margin-top:16px;font-size:11px}.settings-grid .profile-form .btn{margin-top:0;font-size:12px}.settings-grid .language-picker>span{display:none}.setting-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:7px}.category-progress{display:flex;flex-direction:column;gap:20px;margin-top:22px;font-size:12px}.category-progress .row{margin-bottom:9px}.history-card{display:flex;align-items:center;gap:13px;padding:15px 0;border-bottom:1px solid var(--line)}.result-mark{width:31px;height:31px;display:grid;place-items:center;border-radius:9px;background:#483548;border:1px solid #997d4e;color:#f5d78e;font-size:14px;font-weight:650}.result-mark.loss{background:#4b2737;color:#ffb6ae;border-color:#7b4859}.result-mark.draw{background:#382a48;color:#d7c5e8;border-color:#795786}.history-card strong{font-size:12px}.history-card p{font-size:10px;margin-top:4px}.profile-form{display:flex;flex-direction:column;gap:11px;margin-top:16px}.profile-form label{font-size:12px;font-weight:650}.profile-form input{width:100%}.profile-form .btn{align-self:start}.profile-form .btn.full{align-self:stretch}.form-error{color:var(--red);font-size:11px;line-height:1.8}.form-error:empty{display:none}
.coach-avatar{width:46px;height:46px;padding:4px;flex:none;border:1px solid #b8904c;background:linear-gradient(140deg,#59314c,#21112d);border-radius:14px;display:block}.coach-avatar .piece{width:100%;height:100%}.coach-mini{display:grid;place-items:center;width:24px;height:24px;flex:none;background:#51324c;border-radius:8px;color:var(--gold)}.coach-mini .icon{width:15px;height:15px}.coach-home{display:flex;align-items:center;gap:18px;padding:22px 24px;margin-bottom:27px;border-color:#a17a46;background:linear-gradient(120deg,#3a223d,#21122d)}.coach-home-copy{flex:1;min-width:0}.coach-home .eyebrow{font-size:9px;letter-spacing:1px}.coach-home h3{font-size:16px;margin:7px 0;overflow-wrap:anywhere}.coach-home p{font-size:11px;line-height:1.85}.coach-home .btn{font-size:11px;padding:10px 13px}.coach-home .text-btn{font-size:11px}.coach-layout{display:grid;grid-template-columns:minmax(0,1.4fr) minmax(245px,1fr);gap:22px;align-items:start}.coach-chat{padding:0;overflow:hidden}.coach-chat-heading{display:flex;align-items:center;gap:14px;padding:24px;border-bottom:1px solid var(--line);background:#38203f}.coach-chat-heading h2{font-size:21px}.coach-chat-heading p{font-size:11px;margin-top:4px}.coach-quick-actions{display:flex;flex-wrap:wrap;gap:7px;padding:17px 20px;border-bottom:1px solid var(--line)}.coach-quick-actions .chip{font-size:10px;padding:7px 10px;min-height:34px}.coach-messages{display:flex;flex-direction:column;gap:16px;min-height:260px;max-height:500px;overflow:auto;padding:22px;scrollbar-width:thin;overscroll-behavior:contain}.coach-message{max-width:94%;padding:15px 16px;border-radius:16px;overflow-wrap:anywhere}.message-author{font-size:10px;color:#dcc183;display:block;margin-bottom:7px;font-weight:700}.coach-message p{font-size:12px;line-height:1.9;white-space:pre-line;color:#e9dce7}.from-coach{background:#38223f;border:1px solid #94734a66;align-self:start;border-top-left-radius:4px}.from-user{background:#664452;border:1px solid #bb976965;align-self:end;border-top-right-radius:4px}.from-user p{color:#fff2d8}.message-links{display:flex;flex-direction:column;gap:4px;margin-top:7px}.message-links .text-btn{font-size:11px}.coach-form{display:flex;align-items:center;gap:9px;border-top:1px solid var(--line);padding:16px 20px 10px}.coach-form input{min-width:0;flex:1;padding:12px;border:1px solid var(--line);background:#190e24;color:var(--ink);border-radius:11px;min-height:45px;font-size:12px}.coach-form .btn{width:43px;padding:10px;flex:none}.coach-scope{padding:0 21px 17px;font-size:9px;line-height:1.9;color:#b09bb7}.coach-memory .eyebrow,.coach-next .eyebrow{font-size:9px;letter-spacing:1px}.coach-memory h3,.coach-next h3{margin:12px 0 17px;overflow-wrap:anywhere}.coach-counts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px 12px;margin-top:20px}.coach-counts strong{font-size:27px;display:block;color:#ffe3a3}.coach-counts small{font-size:11px;color:#bca8c2;font-weight:400;margin-left:3px}.coach-counts span{font-size:10px;line-height:1.7;color:var(--muted);display:block}.coach-next p{font-size:12px;line-height:1.9}.coach-next .btn{margin-top:20px;font-size:12px}.coach-topics{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:22px 28px;margin-top:25px}.coach-topic strong{font-size:12px}.coach-topic p{font-size:10px;margin:8px 0 10px}.topic-status{font-size:9px;line-height:1.5;color:#c9b5d1;background:#382241;padding:4px 7px;border-radius:7px}.topic-status.review{background:#62432b;color:#ffe2a4}.topic-status.practiced{background:#414035;color:#e7dda9}.coach-lesson-tags{display:flex;flex-wrap:wrap;gap:7px;margin-top:14px}.coach-lesson-tags .chip{font-size:10px;white-space:normal}.coach-bot-tip,.coach-game-tip{padding:15px 16px;border:1px solid #b28b4e66;background:#38223d;border-radius:13px;margin-bottom:23px}.coach-bot-tip strong,.coach-game-tip strong{font-size:11px}.coach-bot-tip p,.coach-game-tip p{font-size:11px;line-height:1.9;margin-top:11px}.coach-bot-tip .text-btn,.coach-game-tip .text-btn{font-size:10px}.coach-game-tip{margin:20px 0 0}
.toast{position:fixed;z-index:120;left:calc(50% + 110px);bottom:30px;transform:translate(-50%,20px);max-width:min(90vw,550px);padding:13px 21px;border:1px solid #bd9857;border-radius:13px;background:#35203deb;color:#fff0c7;box-shadow:0 6px 30px #0008;font-size:12px;opacity:0;pointer-events:none;transition:opacity .18s,transform .18s}.toast.show{opacity:1;transform:translate(-50%,0)}dialog{border:1px solid #caa055;background:linear-gradient(145deg,#32173f,#1a0d24);color:var(--ink);border-radius:23px;box-shadow:0 22px 90px #000a;padding:30px;width:min(92vw,520px);max-height:90svh;overflow:auto}dialog::backdrop{background:#080310b8;backdrop-filter:none}dialog h2{font-size:26px;margin-bottom:15px}dialog p{font-size:12px;line-height:1.9;margin:12px 0}.modal-actions{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:10px;margin-top:25px}.modal-actions .btn{font-size:12px}.promotion-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin:22px 0}.promotion-grid button{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:8px;padding:10px 4px;border:1px solid #af884e;border-radius:12px;background:#3a2040;font-size:10px;min-width:0}.promotion-grid .piece{width:65px;height:65px;max-width:100%}.welcome-brand{width:145px;height:145px;border-radius:20px;overflow:hidden;margin:0 auto 20px;border:1px solid #bc8b4d}.welcome-brand img{width:100%;height:100%;object-fit:cover}.welcome-brand+.language-picker{margin-bottom:22px}.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
@media(min-width:1600px){.app-main{padding-left:55px;padding-right:55px}.hero-art img{min-height:370px}}
@media(max-width:1100px){.app-main{padding-left:25px;padding-right:25px}.puzzle-grid{grid-template-columns:repeat(3,minmax(0,1fr))}.hero-content{padding:29px}.stat{padding:18px;gap:10px}.stat-icon{width:34px;height:34px}.stat-icon .icon{width:19px;height:19px}.training-card{padding:20px}.training-card h3{font-size:15px}.coach-layout{grid-template-columns:minmax(0,1.3fr) minmax(220px,1fr);gap:17px}.coach-home{flex-wrap:wrap;gap:14px}.coach-home>.btn{margin-left:60px}.exercise-layout{gap:20px;grid-template-columns:minmax(260px,1fr) minmax(240px,.85fr)}.home-bottom{grid-template-columns:1fr}.coach-topics{grid-template-columns:1fr}}
@media(max-width:900px){.sidebar{width:185px;padding:26px 13px}.sidebar .brand{font-size:18px;gap:7px}.sidebar .brand-mark{width:33px;height:33px}.sidebar .brand small{font-size:7px;letter-spacing:1px}.app-main{margin-left:185px;padding-left:20px;padding-right:20px}.nav a{padding:12px 10px;font-size:12px}.topbar{height:80px}.topbar-label span{display:none}.hero{min-height:315px;grid-template-columns:1.2fr .8fr}.hero-content{padding:25px}.hero h1{font-size:34px}.hero-art img{min-height:315px}.hero .eyebrow{font-size:8px;letter-spacing:1px}.hero p{font-size:11px}.hero .btn{font-size:12px;padding:10px 13px}.stat-grid,.progress-metrics{gap:10px}.stat{padding:17px 12px}.stat-icon{display:none}.stat-number{font-size:26px}.stat-label{font-size:9px}.train-grid{gap:10px}.training-card{padding:17px}.training-card .arrow{right:13px;top:23px;width:16px;height:16px}.training-card h3{font-size:13px}.training-card p{font-size:10px}.tile-icon{width:37px;height:37px;border-radius:11px}.card-footer{font-size:8px}.exercise-layout{grid-template-columns:1fr}.board-frame{max-width:500px}.lesson-grid,.settings-grid{grid-template-columns:1fr}.bot-setup{grid-template-columns:1fr}.bot-preview{min-height:200px;display:grid;grid-template-columns:110px 1fr;text-align:left;gap:0 20px;padding:25px}.bot-avatar{width:95px;height:95px;margin:0;grid-row:1/4}.bot-avatar .piece{width:80px;height:80px}.bot-preview h2{font-size:30px;align-self:end}.bot-rank{font-size:10px;margin-top:4px}.bot-preview p{max-width:none;margin-top:10px;font-size:11px}.coach-layout{grid-template-columns:1fr}.coach-layout>aside{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));align-items:start}.coach-home>.btn{margin-left:0}.toast{left:calc(50% + 90px)}.goal-note{padding:14px}.goal-note p{font-size:10px}}
@media(max-width:700px){.sidebar{display:none}.app-main{margin:0;padding:0 16px 105px}.content{max-width:540px}.topbar{height:77px;margin-bottom:24px;max-width:540px;gap:8px}.topbar-label{display:none}.mobile-brand{display:flex;font-size:23px;gap:8px}.mobile-brand .brand-mark{width:35px;height:35px;border-radius:11px}.mobile-brand small{font-size:7px;letter-spacing:1.3px}.topbar-tools{gap:8px}.topbar-tools .icon-btn{width:35px;height:35px}.topbar-tools .icon-btn .icon{width:19px;height:19px}.language-picker.compact select{width:54px;min-height:35px;padding:7px 5px;border-radius:10px;font-size:10px}.streak-pill{display:none}.personal-greeting{font-size:10px;margin-bottom:21px;gap:7px}.personal-greeting .text-btn{font-size:9px}.personal-greeting .icon{width:13px;height:13px}.page-heading{margin-bottom:22px}.page-heading h1{font-size:28px;letter-spacing:-.8px}.page-heading p{font-size:12px;max-width:350px}.hero{min-height:305px;grid-template-columns:1.1fr .9fr;border-radius:20px}.hero-content{padding:25px 0 25px 23px}.hero h1{font-size:35px;letter-spacing:-1.1px;margin:14px 0}.hero p{font-size:11px;line-height:1.85;max-width:230px}.hero .btn{font-size:11px;padding:10px 12px;gap:6px;min-height:42px;margin-top:19px}.hero .btn .icon{width:16px;height:16px}.hero-art img{min-height:305px;object-fit:cover;object-position:45% center}.stat-grid,.progress-metrics{margin:18px 0 23px;gap:9px}.stat{border-radius:15px;padding:15px 11px}.stat-number{font-size:25px}.stat-number span{font-size:10px}.stat-label{font-size:9px}.section-heading{margin:24px 0 14px}.section-heading h2{font-size:19px}.section-heading .text-btn{font-size:11px}.train-grid{grid-template-columns:1fr;gap:12px}.training-card{flex-direction:row;align-items:center;gap:15px;padding:18px;min-height:0;border-radius:16px}.training-card>div{min-width:0;flex:1}.training-card .tile-icon{width:43px;height:43px}.training-card h3{font-size:15px;margin-bottom:5px}.training-card p{font-size:11px}.training-card .arrow{position:static;order:3;margin-left:auto;flex:none}.training-card .card-footer,.training-card .progress-track{display:none}.home-bottom{gap:16px;margin-top:20px}.card{padding:21px}.home-bottom h3{font-size:14px}.home-bottom .card{border-radius:17px}.check-step{font-size:11px}.app-foot{flex-wrap:wrap;gap:5px;font-size:9px;margin-top:25px}.app-foot .text-btn{font-size:9px}.bottom-nav{position:fixed;z-index:40;inset:auto 0 0;display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:3px;background:#1b0c25f5;backdrop-filter:none;border-top:1px solid #ab824c;padding:8px 7px max(9px,env(safe-area-inset-bottom));box-shadow:0 -6px 35px #0005}.bottom-nav a{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:5px;border:1px solid transparent;padding:6px 2px;border-radius:12px;color:#b8a1c0;text-decoration:none;font-size:10px;min-width:0;line-height:1.4}.bottom-nav a.active{background:linear-gradient(140deg,#58324f,#2b1838);border-color:#b58a49;color:#f8d782}.bottom-nav .icon{width:22px;height:22px}.bottom-nav span{max-width:100%;white-space:nowrap}.puzzle-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:11px}.puzzle-tile{padding:16px;min-height:142px;border-radius:16px}.puzzle-tile h3{font-size:13px}.puzzle-tile .number{font-size:9px}.filters{flex-wrap:nowrap;overflow:auto;scrollbar-width:none;padding:3px 0 10px;margin-bottom:12px}.filters .chip{flex:none;white-space:nowrap;font-size:10px}.filters::-webkit-scrollbar{display:none}.filter-row{align-items:start;gap:10px}.filter-row .small{font-size:10px;max-width:50%}.filter-row select{font-size:10px;padding:9px;min-height:38px;max-width:50%}.lesson-grid{gap:11px}.lesson-card{padding:17px;gap:13px;min-height:95px}.lesson-card h3{font-size:14px}.lesson-symbol{width:40px;height:40px}.lesson-group-title{font-size:10px;line-height:1.8;margin-top:26px}.breadcrumbs{font-size:10px;gap:7px;margin-bottom:17px}.breadcrumbs .text-btn{font-size:11px}.exercise-layout{gap:22px}.player-label{font-size:11px;padding:8px 10px;gap:8px;margin-bottom:11px}.player-label.bottom{margin-top:11px}.player-side{font-size:9px}.side-token{width:25px;height:25px}.side-token .icon{width:15px;height:15px}.turn-label{font-size:8px}.board-frame{padding:3px}.piece{width:89%;height:89%}.rank-label,.file-label{font-size:8px}.board-controls{margin-top:14px}.board-controls .btn{font-size:11px;padding:8px 12px;min-height:39px}.board-controls .icon-btn{width:36px;height:36px}.board-helper{font-size:10px}.exercise-info .card{border-radius:17px}.exercise-info h2{font-size:24px}.exercise-instruction{padding:13px;font-size:12px}.exercise-mobile-summary{display:block;margin-bottom:20px}.exercise-mobile-summary h2{font-size:23px;letter-spacing:-.5px;margin-bottom:10px}.exercise-mobile-summary p{font-size:12px;line-height:1.9}.mobile-objective{margin-top:13px;padding:12px 14px;font-size:12px;font-weight:650;line-height:1.8;border:1px solid #a37b4266;border-radius:11px;background:#38203e;color:#f7d99a}.repeat-heading,.repeat-intro,.repeat-objective{display:none}.no-board{min-height:120px}.no-board .icon{width:65px;height:65px}.bot-preview{min-height:180px;grid-template-columns:85px 1fr;gap:0 18px;padding:23px}.bot-avatar{width:80px;height:80px}.bot-avatar .piece{width:65px;height:65px}.bot-preview h2{font-size:28px}.bot-preview p{font-size:10px;line-height:1.8}.elo-grid{gap:8px}.elo-option{font-size:12px;padding:10px 5px}.setup-label{font-size:12px}.segmented button{font-size:12px}.switch-row{font-size:12px}.resume-banner{flex-direction:column;align-items:stretch;gap:14px;padding:18px}.resume-banner .btn{width:100%}.settings-grid{gap:16px}.settings-grid p{font-size:12px}.settings-grid .btn{font-size:11px}.setting-actions{gap:8px}.coach-home{padding:18px;gap:12px;align-items:start;border-radius:17px;margin-bottom:24px}.coach-home .coach-avatar{width:38px;height:38px;border-radius:11px}.coach-home-copy{flex:1;min-width:0}.coach-home h3{font-size:14px;line-height:1.6}.coach-home p{font-size:10px}.coach-home .eyebrow{font-size:8px;letter-spacing:.9px}.coach-home>.btn{width:100%;margin:0}.coach-layout>aside{display:flex;flex-direction:column;gap:16px}.coach-layout>aside>.card{width:100%}.coach-chat{padding:0}.coach-chat-heading{padding:20px;gap:12px}.coach-chat-heading h2{font-size:20px}.coach-chat-heading p{font-size:10px;line-height:1.8}.coach-chat-heading .coach-avatar{width:40px;height:40px}.coach-quick-actions{padding:15px;gap:7px}.coach-quick-actions .chip{font-size:10px;min-height:35px;padding:8px 10px}.coach-messages{padding:16px;max-height:430px;min-height:230px}.coach-message{padding:14px;max-width:96%}.coach-message p{font-size:12px}.coach-form{padding:14px 14px 9px;gap:7px}.coach-form input{font-size:12px;padding:11px}.coach-scope{font-size:9px;padding:0 15px 16px}.coach-counts{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}.coach-counts strong{font-size:24px}.coach-counts span{font-size:9px}.coach-topic .row{gap:8px}.coach-topic strong{font-size:11px}.coach-topics{gap:22px}.coach-lesson-tags .chip{font-size:10px}.toast{left:50%;bottom:91px;max-width:90vw;width:max-content;font-size:11px}.profile-form input{font-size:16px}dialog{padding:24px;border-radius:20px}dialog h2{font-size:25px}.welcome-brand{width:125px;height:125px}.promotion-grid{gap:8px}.promotion-grid button{font-size:9px}.game-status{font-size:23px!important}}
@media(max-width:450px){.hero{display:block;min-height:310px}.hero-content{padding:27px 23px;max-width:78%}.hero h1{font-size:35px}.hero p{max-width:215px}.hero-art{position:absolute;right:-33px;bottom:8px;width:225px;height:265px;opacity:.58}.hero-art img{min-height:0;width:100%;height:100%;object-fit:cover;object-position:center}.hero-art:after{background:linear-gradient(90deg,#190b25 0%,#190b25cc 20%,transparent 75%)}.hero-content p{color:#d7c7dd}.coach-topic .row{flex-wrap:wrap}.settings-grid .btn.danger{font-size:10px}}
@media(max-width:370px){.app-main{padding-left:12px;padding-right:12px}.mobile-brand{font-size:21px;gap:7px}.mobile-brand .brand-mark{width:32px;height:32px}.topbar-tools{gap:6px}.hero-content{max-width:87%;padding:26px 20px}.hero h1{font-size:32px}.hero .eyebrow{font-size:7px}.hero p{font-size:11px;max-width:205px}.hero-art{right:-55px;opacity:.4}.stat{padding:14px 9px}.stat-label{font-size:8px}.stat-number{font-size:23px}.bottom-nav a{font-size:9px}.player-label{font-size:10px;gap:6px}.turn-label{font-size:8px}.player-side{font-size:8px}.training-card h3{font-size:14px}.training-card p{font-size:10px}.board-controls .btn{font-size:10px;padding:8px 10px}.coach-counts{grid-template-columns:repeat(2,minmax(0,1fr))}.filter-row select{max-width:48%}.promo-grid .piece{height:50px}.profile-form .btn{font-size:12px}}
@media(prefers-reduced-motion:reduce){*,*:before,*:after{animation:none!important;transition:none!important;scroll-behavior:auto!important}}

.version-label{display:inline-block;padding:1px 6px;border:1px solid #a8814c77;border-radius:6px;color:#e3c27e;font-size:9px;white-space:nowrap}.update-notice{position:fixed;z-index:90;bottom:24px;left:50%;transform:translateX(-50%);width:min(90vw,550px);display:flex;align-items:center;gap:18px;padding:18px;background:#321b3fee;border:1px solid #e3ba62;border-radius:16px;box-shadow:0 10px 40px #0007;backdrop-filter:blur(10px)}.update-notice p{font-size:12px;line-height:1.8;color:#f5e5c6}.update-notice .btn{flex:none;font-size:11px}@media(max-width:700px){.update-notice{bottom:91px;gap:11px;padding:15px;flex-wrap:wrap}.update-notice .btn{width:100%}.update-notice p{font-size:11px}}
/* Raster textures and stable board cells avoid repeated SVG filter paints. */
.board{isolation:isolate;contain:layout style}.square{touch-action:manipulation}.square.piece-moving{overflow:visible;z-index:6}.piece-moving .piece{will-change:transform}.mode-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px;margin:12px 0}.mode-option{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:7px;border:1px solid #805e48;border-radius:13px;background:#21102b;padding:13px 6px;font-size:11px;min-width:0;line-height:1.4}.mode-option .icon{color:var(--gold)}.mode-option.active{background:linear-gradient(135deg,#65402f,#36203d);border-color:#f0c763;color:#ffe2a3}.time-presets{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px;margin:13px 0}.time-presets .chip{min-width:0;min-height:44px;padding:10px 6px;justify-content:center;font-size:14px;font-variant-numeric:tabular-nums;white-space:nowrap}.time-description{font-size:12px;color:#f0d7a1;margin:10px 0}.chess-clock{margin-left:auto;flex:none;min-width:83px;text-align:center;font-size:21px;line-height:1.3;font-weight:750;font-variant-numeric:tabular-nums;border:1px solid #785943;background:#140a1d;color:#c1adcb;border-radius:10px;padding:5px 9px;contain:layout style}.chess-clock.running{background:#f0d18c;border-color:#ffe7ac;color:#25112b}.chess-clock.low-time{background:#672632;border-color:#d9817f;color:#fff0de}.player-label:has(.chess-clock) .turn-label{margin-left:auto}.player-label:has(.chess-clock) .player-side{display:none}.player-label:has(.chess-clock) .turn-label+.chess-clock{margin-left:0}.player-label:has(.chess-clock) strong{min-width:0;max-width:35%}
@media(max-width:480px){.mode-grid{grid-template-columns:repeat(2,minmax(0,1fr))}.mode-option{flex-direction:row;padding:12px 8px;font-size:11px}.chess-clock{min-width:78px;font-size:20px;padding:4px 7px}.player-label:has(.chess-clock){gap:7px}.player-label:has(.chess-clock) .turn-label{font-size:7px}.player-label:has(.chess-clock) strong{max-width:32%}}
@media(prefers-reduced-motion:reduce){.piece-moving .piece{will-change:auto}}

/* The second theme uses the user's smooth violet/ivory reference. */
:root[data-theme=classic]{--bg:#170a24;--paper:#281438;--line:#7957988a;--soft:#392147}
[data-theme=classic] body{background:radial-gradient(ellipse at 50% 5%,#46235d55,transparent 65%),#170a24}
[data-theme=classic] .board-frame{padding:2px;border-radius:9px;background:#eac469;border:1px solid #ffe5a1;box-shadow:0 8px 25px #09031250}
[data-theme=classic] .board{border-radius:5px}
[data-theme=classic] .square.light:not(.king-check){background:#f5e8c9;color:#72583d}
[data-theme=classic] .square.dark:not(.king-check){background:#6b5179;color:#fff0c9}
[data-theme=classic] .white-piece g{fill:#fff3d4;stroke:#211329;color:#211329}
[data-theme=classic] .black-piece g{fill:#120b1c;stroke:#e9dcba;color:#e9dcba}
[data-theme=classic] .king-cross{fill:#efc458}
[data-theme=classic] .player-label{border-color:#70518c;border-radius:14px;padding:12px;background:linear-gradient(120deg,#2b153a,#241131);box-shadow:inset 0 1px #cda8e411}
[data-theme=classic] .side-token{width:36px;height:36px;border:2px solid #e8bf66}
[data-theme=classic] .side-token .icon{width:22px;height:22px}
[data-theme=classic] .bot-preview{background:radial-gradient(circle at 50% 30%,#65408055,transparent 65%),#21102e}
.game-actions{display:flex;gap:10px;margin-top:20px}
.game-actions .btn{flex:1;min-width:0;flex-direction:column;gap:7px;padding:14px 6px;border:1.5px solid #e2ba62;border-radius:18px;font-size:12px;background:linear-gradient(145deg,#392044,#21102f)}
.game-actions .icon{width:29px;height:29px;stroke-width:2.2}
.theme-options{display:grid;grid-template-columns:1fr 1fr;gap:14px;margin-top:19px}
.theme-option{display:flex;flex-direction:column;gap:10px;min-width:0;text-align:left;border:1px solid #735286;border-radius:15px;background:#1e1029;padding:12px;color:var(--ink)}
.theme-option.active{border:2px solid #f0c763;padding:11px;background:#35213b}
.theme-preview{display:grid;grid-template-columns:repeat(4,1fr);aspect-ratio:1.55;overflow:hidden;border:2px solid #d1aa60;border-radius:7px;width:100%}
.theme-preview>span{display:flex;align-items:center;justify-content:center;min-height:0;overflow:hidden}
.theme-preview .piece{width:75%;height:100%;max-height:45px}
.theme-preview.classic .light{background:#f5e8c9}.theme-preview.classic .dark{background:#6b5179}
.theme-preview.marble .light{background:#f5e8c9 url('./assets/ivory.webp') center/190px}.theme-preview.marble .dark{background:#35153f url('./assets/marble.webp') center/280px}
.theme-title{display:flex;align-items:center;justify-content:space-between;gap:6px;font-size:14px;font-weight:700;color:#f7dda3}
.theme-title .icon{width:17px;height:17px}
.theme-description{font-size:10px;line-height:1.7;color:var(--muted)}
.design-settings>p{font-size:12px;margin-top:9px;line-height:1.8}
@media(max-width:360px){.theme-options{gap:9px}.theme-option{padding:9px}.theme-option.active{padding:8px}.game-actions{gap:7px}.game-actions .btn{font-size:10px}}
/* Curriculum, independent piece sets and the future live-play entry. */
.level-picker{display:grid;grid-template-columns:repeat(6,minmax(0,1fr));gap:10px;margin:20px 0 8px}.level-card{min-width:0;min-height:100px;padding:14px 10px;border:1px solid var(--line);border-radius:14px;background:var(--paper);color:var(--ink);text-align:left;display:flex;flex-direction:column;gap:7px;cursor:pointer}.level-card strong{font-size:.94rem}.level-card span,.level-card small{font-size:.75rem;color:var(--muted);line-height:1.4}.level-card.active{border-color:var(--gold);background:linear-gradient(145deg,rgba(229,184,85,.14),rgba(86,37,108,.16));box-shadow:0 0 0 1px var(--gold)}.level-caption{margin-bottom:20px}.course-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.course-card{display:flex;flex-direction:column;gap:14px;min-width:0}.course-card h2{font-size:1.25rem;margin:0}.course-card p{font-size:.9rem;margin:0;flex:1}.course-card .progress-track{margin:0}.course-steps{display:flex;gap:6px;flex-wrap:wrap}.course-steps span{border:1px solid var(--line);border-radius:7px;padding:5px 8px;font-size:.72rem;color:var(--muted)}.course-intro{margin-top:20px}.course-test-card{margin-top:24px}.course-test-card h2{margin:12px 0}.course-test-card .btn{margin:8px 0}.review-label{display:flex;gap:5px;align-items:center;color:var(--gold);font-size:.76rem;margin-top:8px}.review-label .icon{width:15px;height:15px}.success-text{color:var(--green,#9cd7ae)}.puzzle-tile .tile-meta{flex-wrap:wrap;line-height:1.4}.assessment-list{display:grid;gap:24px;margin:24px 0}.assessment-question{min-width:0;margin:0;padding-top:8px}.assessment-question legend{font-weight:700;font-size:1.05rem;line-height:1.5;padding:0 9px;max-width:100%}.assessment-question .quiz-option{min-height:48px;display:flex;gap:12px;align-items:center;cursor:pointer}.assessment-question .quiz-option input{flex:none;width:19px;height:19px;accent-color:var(--gold)}.assessment-question .quiz-option.selected{border-color:var(--gold);background:rgba(229,184,85,.1)}.assessment-question .quiz-option.correct{border-color:var(--green,#9cd7ae)}.assessment-question .feedback .text-btn{display:flex;margin-top:12px}.assessment-result{margin:24px 0}.piece-options{display:grid;grid-template-columns:1fr 1fr;gap:12px}.piece-option{min-width:0;min-height:135px;position:relative;display:flex;flex-direction:column;align-items:center;gap:10px;border:1px solid var(--line);background:transparent;border-radius:14px;color:var(--ink);padding:14px 8px;cursor:pointer}.piece-option.active{border-color:var(--gold);box-shadow:0 0 0 1px var(--gold)}.piece-option strong{font-size:.82rem;line-height:1.5}.piece-option>.icon{position:absolute;right:8px;top:8px;width:17px;height:17px;color:var(--gold)}.piece-set-preview{display:flex;justify-content:center;align-items:center;width:100%;max-width:170px;background:linear-gradient(90deg,#725178 33%,#f8ecd1 33%,#f8ecd1 66%,#725178 66%);border-radius:8px;padding:7px 0}.piece-set-preview .piece{width:32%;height:auto;filter:none}.classic-piece .king-cross{fill:inherit}.coming-soon-card{text-align:left;color:var(--ink);font:inherit;cursor:default;border-style:dashed;opacity:.85}.coming-soon-card .card-footer{margin-top:auto}.coming-soon-card .tag{font-size:.8rem}.train-grid{grid-template-columns:repeat(2,minmax(0,1fr))}
@media(max-width:1100px){.level-picker{grid-template-columns:repeat(3,minmax(0,1fr))}.level-card{min-height:94px}}
@media(max-width:640px){.level-picker{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px}.level-card{padding:12px;min-height:90px}.course-grid,.train-grid{grid-template-columns:1fr}.assessment-question{padding:14px}.assessment-question legend{font-size:1rem}.piece-option strong{font-size:.78rem}.course-card p{font-size:.86rem}.course-steps span{font-size:.7rem}}

.puzzle-tile{min-width:0;overflow-wrap:anywhere}.puzzle-tile>.small{display:block;white-space:normal;font-size:10px;line-height:1.6;margin-top:7px}.coming-soon-card .coming-soon-label{display:inline-flex;margin-top:10px;white-space:normal}
/* Play modes, entry questions and the independent third board/piece design. */
.play-menu{display:grid;gap:22px;max-width:760px;margin:24px auto}.play-tile{position:relative;display:flex;flex-direction:column;gap:15px;padding:26px;border-color:#ae864a88}.play-tile-head{display:flex;align-items:center;gap:18px;padding-right:36px}.play-tile-head>div{min-width:0}.play-tile h2{margin-top:8px}.play-piece{width:72px;height:72px;flex:none;background:#59335d66;border-radius:18px;padding:5px}.play-piece .piece{width:100%;height:100%;filter:none}.play-tile>p{font-size:14px}.play-tile .btn{margin-top:2px}.info-toggle{position:absolute;top:24px;right:24px;width:36px;height:36px;border:1px solid var(--gold);border-radius:50%;background:#2c1639;color:var(--gold);font-size:22px;font-weight:700}.play-info{padding:15px;background:#170c23;border:1px solid var(--line);border-radius:12px;font-size:13px}.rating-panel{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.rating-panel>div{border:1px solid var(--line);border-radius:12px;padding:12px 16px;min-width:0}.rating-panel span{display:block;font-size:12px;color:var(--muted)}.rating-panel strong{display:block;font-size:32px;color:var(--gold);font-variant-numeric:tabular-nums}.live-tile{border-style:dashed}.live-tile .btn{opacity:.65}.rated-time-label{display:flex;align-items:center;gap:12px;justify-content:space-between;font-size:13px}.rated-time-label select{max-width:60%;min-width:110px;min-height:44px;background:#21102d;color:var(--ink);border:1px solid var(--line);border-radius:9px;padding:8px}.start-options{border:0;padding:0;margin:22px 0;display:grid;gap:9px;min-width:0}.start-option{display:flex;align-items:center;gap:12px;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:#24132f;cursor:pointer;font-size:14px;line-height:1.5}.start-option:has(:checked){border-color:var(--gold);background:#473046}.start-option input{width:19px;height:19px;flex:none;accent-color:var(--gold)}.assessment-summary{font-size:12px;margin:18px 0;display:grid;gap:13px}.assessment-summary dt{color:var(--muted)}.assessment-summary dd{margin:3px 0 0;color:var(--gold);font-weight:650}.personal-plan{margin:0 0 22px;display:grid;gap:10px}.personal-plan .btn{justify-self:start}.rating-history{margin:20px 0}.rating-history .rating-panel{margin:18px 0}.rating-history details{margin:18px 0}.rating-history summary{cursor:pointer;color:var(--gold);font-weight:650}.rated-history-list{max-height:400px;overflow:auto}.rated-history-row{display:flex;gap:12px;justify-content:space-between;flex-wrap:wrap;padding:13px 0;border-bottom:1px solid var(--line);font-size:12px}.rating-result{padding:16px;border:1px solid var(--gold);border-radius:12px;margin:16px 0;color:var(--gold)}.rating-result p{font-size:12px;margin-top:7px}.theme-options,.piece-options{grid-template-columns:repeat(3,minmax(0,1fr))}.theme-preview.wood .light{background:#f4efdf}.theme-preview.wood .dark{background:#b88764}
[data-theme=wood] .board-frame{background:#bd8b4c;border-color:#f0d28e;border-radius:10px;padding:3px}[data-theme=wood] .board{border-radius:5px}[data-theme=wood] .square.light:not(.king-check){background:#f4efdf;color:#765236}[data-theme=wood] .square.dark:not(.king-check){background:#b88764;color:#392516}
/* Board colours never override a separately selected black/white piece set. */
[data-theme] .classic-piece.white-piece g,[data-theme] .bold-piece.white-piece g{fill:#fff;stroke:#202020;color:#202020}[data-theme] .classic-piece.black-piece g,[data-theme] .bold-piece.black-piece g{fill:#171717;stroke:#eee;color:#eee}
@media(max-width:480px){.play-tile{padding:20px;gap:14px}.play-tile-head{gap:12px;padding-right:28px}.play-tile h2{font-size:20px}.play-piece{width:54px;height:54px;border-radius:13px}.info-toggle{right:17px;top:20px;width:30px;height:30px;font-size:19px}.rating-panel>div{padding:11px}.rating-panel strong{font-size:28px}.theme-options,.piece-options{grid-template-columns:1fr}.theme-option{display:grid;grid-template-columns:100px 1fr;align-items:center;column-gap:14px}.theme-preview{grid-row:span 2}.theme-description{font-size:11px}.piece-option{min-height:110px}.piece-option strong{font-size:14px}.start-option{font-size:13px}.rated-time-label{flex-wrap:wrap}dialog .modal-actions{flex-wrap:wrap}dialog .modal-actions .btn{flex:1}}
.store-update-actions{display:flex;gap:8px;flex-wrap:wrap}.store-update-actions .btn{flex:1}.update-notice:has(.store-update-actions){align-items:stretch;flex-direction:column}

/* Layout controls are deliberately outside the inert, noninteractive card contents. */
.layout-toolbar{display:flex;gap:14px;align-items:center;justify-content:flex-end;flex-wrap:wrap}.page-heading>.layout-toolbar{flex:none}.sortable-tiles{display:grid;gap:18px}.sortable-tile{min-width:0;position:relative}.tile-content>.card{height:100%;margin:0}.tile-edit-controls{display:flex;align-items:center;justify-content:space-between;padding:9px 12px;background:#43274b;border:1px solid #b89152;border-radius:15px 15px 0 0}.tile-edit-controls+.tile-content{opacity:.82}.tile-edit-controls+.tile-content>.card{border-top-left-radius:0;border-top-right-radius:0}.tile-edit-controls .icon-btn{width:40px;height:40px;margin-left:6px;font-size:20px}.tile-grip{border:0;color:#f8d178;background:transparent;min-width:44px;min-height:44px;font-size:36px;line-height:1;touch-action:none;user-select:none;cursor:grab}.dragging{opacity:.55}.drop-target{outline:3px solid var(--gold);outline-offset:5px;border-radius:20px}.is-editing .tile-content{pointer-events:none}.level-overview{margin:18px 0}.level-card{width:100%;min-height:130px;gap:10px;padding:22px}.level-card strong{font-size:18px}.level-card .tag{font-size:11px}.level-card .progress-track{width:100%}.level-card span{font-size:13px}.level-overview .sortable-tiles{grid-template-columns:repeat(2,minmax(0,1fr))}.home-tiles .sortable-tiles{grid-template-columns:repeat(2,minmax(0,1fr));align-items:stretch}.home-tiles h2{margin:7px 0 14px}.home-tiles p{margin-bottom:16px}.home-tiles .coach-home{display:flex;flex-wrap:wrap;padding:24px;gap:14px}.home-tiles .coach-home-copy{min-width:150px}.home-tiles .coach-avatar{width:56px;height:56px}.home-tiles .personal-plan{height:100%;margin:0}.continue-card{border-color:#d6aa61;background:radial-gradient(at 100% 0,#78505b66,transparent 70%),linear-gradient(120deg,#3b204a,#23122e)}.daily-card{border-color:#b8915266}.week-stats{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:20px 0}.week-stats strong{display:block;font-size:32px;color:var(--gold);font-variant-numeric:tabular-nums}.week-stats span{font-size:11px;color:var(--muted)}.home-shortcuts .shortcut{display:flex;gap:12px;align-items:center;border-bottom:1px solid var(--line);padding:16px 0;text-decoration:none;color:var(--ink);font-size:14px}.shortcut>.icon:last-child{margin-left:auto;color:var(--gold)}.disclosure-heading{display:flex;align-items:center;justify-content:space-between;gap:18px;width:100%;border:0;background:none;padding:0;color:var(--ink);text-align:left}.disclosure-heading .eyebrow{display:block;margin-bottom:7px}.disclosure-heading strong{font-size:21px;line-height:1.35;display:block}.disclosure-heading>span:last-child{font-size:28px;color:var(--gold)}.news-card{height:100%}.news-card p:first-child{margin-top:20px}.news-list{margin:10px 0 16px}.news-item{display:flex;flex-direction:column;gap:6px;text-decoration:none;padding:16px 0;border-bottom:1px solid var(--line);overflow-wrap:anywhere}.news-item time{font-size:11px;color:var(--muted)}.news-item strong{color:var(--ink);font-size:14px}.news-item>span{font-size:11px}.partner-section{margin:28px 0;border-color:#bf964f}.partner-section p{margin-top:12px}.partner-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px;margin-top:24px}.partner-card{border:1px solid #a97d54;border-radius:18px;padding:24px;background:radial-gradient(at top right,#8b6e1638,transparent),#291535}.partner-card.naturfranz{background:radial-gradient(at top right,#4d7b3e40,transparent),#1c2523}.partner-card h3{font-size:26px;margin:15px 0 0}.partner-discount{font-size:76px;line-height:1.2;color:var(--gold);font-weight:800;letter-spacing:-4px}.partner-discount>span{font-size:40px;margin-left:4px}.code-copy{display:flex;justify-content:space-between;gap:10px;width:100%;padding:14px;border:1px dashed #c5a766;border-radius:10px;background:#10071770;color:#ffe1a5;font-weight:750;font-size:15px;letter-spacing:1px;margin:18px 0}.code-copy span{font-size:11px;letter-spacing:0;font-weight:400}.rated-controls{border:0;margin:0;padding:0;min-width:0}.rated-controls legend{font-size:13px;font-weight:700;margin-bottom:10px}.rated-controls .mode-grid{grid-template-columns:repeat(2,minmax(0,1fr));margin:0 0 16px}.rated-controls .mode-option{min-width:0;padding:12px 8px;font-size:12px;white-space:normal;overflow-wrap:anywhere}.rated-controls .helper-caption{margin-top:12px}.play-menu>.sortable-tiles{gap:22px}.play-menu .layout-toolbar{margin:0}.result-dialog{text-align:center;max-width:460px;margin:auto;padding:14px 4px}.result-emblem{display:grid;place-items:center;width:90px;height:90px;margin:0 auto 22px;border:1px solid currentColor;border-radius:50%;background:#ffffff08}.result-emblem .icon{width:48px;height:48px}.result-dialog.win{color:#94e9b0}.result-dialog.loss{color:#ff9999}.result-dialog.draw{color:#f2d28d}.result-dialog h2{font-size:clamp(28px,7vw,38px);line-height:1.2;color:inherit;overflow-wrap:anywhere;margin:14px 0}.result-dialog>p{font-size:15px;margin:12px 0 24px}.result-dialog .btn{margin-top:12px}.result-dialog.win .primary{background:#95e6ae;color:#142b1b;border-color:#b9ffd1}.result-dialog.loss .primary{background:#f3a1a1;color:#3b111d;border-color:#ffc5c5}.result-dialog .eyebrow{color:inherit}.result-dialog .rating-result{text-align:left;color:var(--gold);font-size:13px}#audience-form input,.copy-code-input{width:100%;margin:12px 0;padding:13px;border:1px solid var(--gold);border-radius:10px;background:#24132f;color:var(--ink)}.game-actions{display:flex;gap:8px;flex-wrap:wrap}.game-actions>.btn{flex:1;font-size:12px;min-width:80px}.piece-set-preview{background:linear-gradient(90deg,#4c2c57 33%,#f8ecd1 33%,#f8ecd1 66%,#4c2c57 66%)}
/* Exactly three independent board palettes. */
[data-theme="violet"] .board .light,.theme-preview.violet .light{background:#f5e7c5!important;background-image:none!important;color:#694577}
[data-theme="violet"] .board .dark,.theme-preview.violet .dark{background:#4e2f5c!important;background-image:none!important;color:#f6deb1}
[data-theme="walnut"] .board .light,.theme-preview.walnut .light{background-color:#eed2a4!important;background-image:repeating-linear-gradient(3deg,#f9e5c630 0 2px,#a2703520 3px 4px,transparent 5px 9px)!important;color:#4b2c1b}
[data-theme="walnut"] .board .dark,.theme-preview.walnut .dark{background-color:#78502f!important;background-image:repeating-linear-gradient(2deg,#c6925930 0 2px,#3b1e1625 3px 5px,transparent 6px 10px)!important;color:#fae8c5}
[data-theme="green"] .board .light,.theme-preview.green .light{background:#eee5c7!important;background-image:none!important;color:#295d40}
[data-theme="green"] .board .dark,.theme-preview.green .dark{background:#3b7150!important;background-image:none!important;color:#f5edcf}
[data-theme="violet"] .board-frame{border-color:#cba14b}[data-theme="walnut"] .board-frame{border-color:#9c6d3f}[data-theme="green"] .board-frame{border-color:#618c59}
.board .square.selected{box-shadow:inset 0 0 0 4px #ffd457!important}.board .square.king-check{box-shadow:inset 0 0 28px #c63b44!important}.board .square.last-move:after{content:"";position:absolute;inset:0;background:#f9dc5b33;pointer-events:none}.board .square.hint-square{box-shadow:inset 0 0 0 4px #f2b841!important}.square .piece{z-index:1;position:relative;filter:none}.piece .piece-detail{fill:none}
@media(min-width:1400px){.level-overview .sortable-tiles{grid-template-columns:repeat(3,minmax(0,1fr))}}
@media(max-width:700px){.home-tiles .sortable-tiles,.level-overview .sortable-tiles,.partner-grid{grid-template-columns:1fr}.layout-toolbar{justify-content:flex-start}.page-heading>.layout-toolbar{margin-top:12px}.level-card{min-height:135px}.partner-card{padding:20px}.week-stats strong{font-size:28px}.disclosure-heading strong{font-size:19px}.home-tiles .coach-home-copy{min-width:0;width:calc(100% - 76px)}.home-tiles .coach-home .btn{width:100%}.play-menu .play-tile{margin:0}.level-overview .sortable-tiles{gap:14px}}
@media(prefers-reduced-motion:reduce){.sortable-tile,.progress-fill{transition:none!important}}

/* Every overview uses the same reorder controls; forms, game controls and partners stay functional. */
.layout-collection{display:block!important;min-width:0}.layout-collection>.layout-toolbar{margin:16px 0}.layout-collection>.sortable-tiles{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:18px}.puzzle-grid.layout-collection>.sortable-tiles{grid-template-columns:repeat(3,minmax(0,1fr))}.progress-layout>.sortable-tiles{grid-template-columns:repeat(2,minmax(0,1fr))}.coach-layout>.sortable-tiles>[data-tile-id="chat"]{grid-column:1/-1}.coach-layout .tile-content>.card{margin:0}.coach-topics.layout-collection>.sortable-tiles{grid-template-columns:repeat(3,minmax(0,1fr))}.category-progress.layout-collection>.sortable-tiles{grid-template-columns:1fr}.category-progress.layout-collection>.sortable-tiles>.sortable-tile{border-bottom:1px solid var(--line);padding-bottom:12px}.category-progress.layout-collection>.layout-toolbar{border:0;padding:0}.coach-topic{padding:14px;border:1px solid var(--line);border-radius:12px}.settings-grid.layout-collection .tile-content>section{height:100%}.progress-layout .stat{min-height:120px}.progress-layout .archive-progress{margin:0}.layout-collection>.sortable-tiles>.sortable-tile>.tile-content>a{display:flex;height:100%}.layout-collection .tile-edit-controls{margin:0}.layout-collection .layout-toolbar .btn{min-height:44px}
@media(max-width:900px){.puzzle-grid.layout-collection>.sortable-tiles{grid-template-columns:repeat(2,minmax(0,1fr))}.coach-topics.layout-collection>.sortable-tiles{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media(max-width:640px){.layout-collection>.sortable-tiles,.puzzle-grid.layout-collection>.sortable-tiles,.coach-topics.layout-collection>.sortable-tiles,.progress-layout>.sortable-tiles{grid-template-columns:1fr}.layout-collection>.layout-toolbar{justify-content:flex-start}}
/* Keep the title, edit controls and instructions independently readable. */
.page-heading.has-aside{align-items:flex-start;flex-wrap:wrap}
.page-title{flex:1 1 280px;min-width:0}
.page-heading-aside{flex:0 1 auto;max-width:100%;min-width:0}
.page-heading:has(.layout-tools){display:block}
.page-heading .layout-tools{margin-top:18px;width:100%}
.layout-tools{min-width:0;max-width:100%;margin-bottom:16px}
.layout-toolbar{display:flex;flex-wrap:wrap;align-items:center;gap:12px}
.layout-tools>.helper-caption{max-width:65ch;line-height:1.6;margin:12px 0 0}
.tile-edit-controls{gap:8px;flex-wrap:wrap}
.tile-arrows{display:flex;gap:8px;margin-left:auto}
.tile-visibility{font-size:.85rem;padding:8px 10px;min-height:44px}
.tile-hidden>.tile-content{opacity:.45}
.storage-notice{border:1px solid var(--gold,#e9c56a);margin-bottom:20px}
.storage-notice p{margin-bottom:12px}
.rating-mode-grid{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:16px}
.rating-mode-history{padding:14px;border:1px solid rgba(226,189,99,.2);border-radius:16px;min-width:0}
.legacy-rating{margin-top:20px}
#bug-description{display:block;width:100%;resize:vertical;min-height:130px;margin:10px 0 16px;padding:12px;background:#21122f;color:#fff4d9;border:1px solid #765480;border-radius:12px;font:inherit}
@media(max-width:700px){.page-heading.has-aside{display:block}.page-heading-aside{width:100%;margin-top:16px}.layout-toolbar .btn,.layout-toolbar .text-btn{max-width:100%;white-space:normal;text-align:left}.rating-mode-grid{grid-template-columns:1fr}.app-foot{gap:14px;flex-wrap:wrap}.tile-edit-controls .icon-btn{width:40px;height:44px}.tile-edit-controls .tile-grip{width:36px}.tile-edit-controls{padding:10px}}
.progress-layout>.sortable-tiles>[data-tile-id="rating"]{grid-column:1/-1}.rating-mode-history .rating-panel>div{min-width:0}.rating-mode-history h3,.rating-mode-history p,.rating-mode-history summary{overflow-wrap:anywhere}@media(max-width:1000px){.rating-mode-grid{grid-template-columns:1fr}}
/* Beta7 study flow, optional partners and local game review. */
.exercise-completion{text-align:center;display:grid;gap:12px}.exercise-completion .result-emblem{margin:0 auto;color:#ebc462}.exercise-completion h2{margin:0}.tactic-total{display:block}.filter-row{flex-wrap:wrap;gap:10px}.week-stats small{display:block;font-size:11px;line-height:1.5;margin-top:5px;color:#b9a8c5}
.partner-entry{margin-top:24px}.partner-entry-link{display:grid;grid-template-columns:44px minmax(0,1fr) 24px;gap:14px;align-items:center;padding:10px 0;color:inherit;text-decoration:none;font-size:clamp(20px,3vw,28px)}.partner-entry-icon{color:#edc668;font-size:40px}.partner-entry-link>span:last-child{color:#edc668;font-size:34px}.partner-back{display:inline-flex;margin-bottom:20px}.partner-page{display:grid;gap:24px;max-width:1050px;margin:auto}.partner-detail{padding:clamp(18px,3vw,34px)}.partner-detail-heading{display:flex;gap:22px;align-items:flex-start;margin:18px 0}.partner-detail-heading>div{min-width:0}.partner-detail-heading h2{font-size:clamp(24px,4vw,36px);line-height:1.15;margin:0 0 12px}.partner-detail-heading p{font-size:17px;line-height:1.65;margin:0}.partner-logo{width:140px;height:auto;object-fit:contain;flex:0 0 auto}.partner-wordmark{color:#ebc462;font-size:24px;flex:0 0 auto}.partner-product{margin:20px 0}.partner-product img{display:block;width:100%;height:auto;max-height:600px;object-fit:cover;border:1px solid #bc98bb;border-radius:22px}.partner-product figcaption{font-size:11px;line-height:1.5;color:#c1aecb;margin-top:8px}.partner-code-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap;border:1px solid #b98bbb;border-radius:16px;padding:12px;margin-bottom:14px}.partner-code-row>strong{background:linear-gradient(135deg,#f9e49b,#eebf4d);padding:10px 16px;border-radius:11px;color:#271033;font-size:23px}.partner-code-row .code-copy{flex:1;min-width:0;justify-content:space-between;gap:12px;overflow-wrap:anywhere}.partner-offer-actions>.btn{font-size:21px;min-height:58px}.partner-offer-actions>.helper-caption{text-align:center}
.analysis-progress{margin-bottom:22px}.analysis-progress progress{width:100%;height:16px;margin-top:18px;accent-color:#ebc462}.analysis-summary{margin-bottom:24px}.analysis-counts{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px;margin:18px 0}.analysis-counts>div{display:grid;gap:6px;text-align:center;background:#362043;border-radius:15px;padding:14px 8px}.analysis-counts strong{font-size:29px;color:#ebc462}.analysis-counts span{font-size:13px;overflow-wrap:anywhere}.analysis-layout{display:grid;grid-template-columns:minmax(0,1.2fr) minmax(0,1fr);gap:24px;margin-bottom:24px;align-items:start}.analysis-layout .board-area{min-width:0}.analysis-layout .board-area>h2{font-size:22px}.analysis-explanation h3{margin-top:14px}.analysis-position-controls{margin-top:14px}.analysis-position-controls .btn{flex:1;min-width:120px}.variation-moves{display:flex;gap:8px;flex-wrap:wrap;margin:12px 0 18px}.analysis-move-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));gap:10px}.analysis-move{border:1px solid #70527d;background:#2a1435;color:#f7eed7;border-radius:12px;min-height:62px;display:grid;gap:5px;text-align:left;padding:12px;cursor:pointer}.analysis-move span{font-size:12px}.analysis-move.good span{color:#97d8a8}.analysis-move.inaccuracy span{color:#f4d98b}.analysis-move.mistake span,.analysis-move.blunder span{color:#ffb4b4}.analysis-move.active{outline:2px solid #e5bd60;outline-offset:1px}.analysis-move-section{margin-bottom:18px}
@media(max-width:760px){.analysis-layout{grid-template-columns:minmax(0,1fr)}.partner-detail-heading{gap:14px}.partner-logo{width:86px}.partner-detail-heading p{font-size:15px}.partner-wordmark{font-size:20px}.partner-code-row>strong{font-size:20px}.partner-code-row .code-copy{font-size:17px}.analysis-counts{gap:7px}.analysis-counts span{font-size:11px}.analysis-position-controls .btn{font-size:13px}.result-dialog .btn{white-space:normal}.partner-offer-actions>.btn{font-size:18px}}
@media(max-width:390px){.partner-detail-heading{display:block}.partner-logo,.partner-wordmark{display:block;margin-bottom:16px}.partner-code-row{display:grid;grid-template-columns:minmax(0,1fr)}.analysis-counts>div{padding:12px 5px}.analysis-move-list{grid-template-columns:repeat(2,minmax(0,1fr))}}
[data-partner-settings-link][hidden]{display:none!important}
.account-panel{max-width:740px;margin:0 auto 24px;overflow-wrap:anywhere}.account-panel form{display:grid;gap:12px;margin:20px 0}.account-panel label{display:block}.account-panel input:not([type=checkbox]){box-sizing:border-box;width:100%;max-width:100%;min-height:46px}.account-panel .row .btn{white-space:normal;min-height:46px}.account-panel .btn.full{margin:8px 0}.partner-entry{margin-top:0}.partner-product img{object-fit:contain}.analysis-position-controls{display:flex;flex-wrap:wrap}.analysis-position-controls .btn{min-width:0;flex:1 1 150px;white-space:normal}.analysis-explanation,.analysis-move-section{overflow-wrap:anywhere}.player-label{flex-wrap:wrap;border-radius:20px}.player-label strong{white-space:normal;text-overflow:clip;overflow-wrap:anywhere}.game-actions .btn,.board-controls .btn{white-space:normal;min-height:44px}.game-actions,.board-controls{flex-wrap:wrap}.tile-edit-controls .tile-arrows{flex-shrink:0}.btn,.text-btn,.icon-btn{touch-action:manipulation}dialog{box-sizing:border-box;max-width:calc(100vw - 24px);scroll-padding-bottom:20px}dialog .btn{white-space:normal;overflow-wrap:anywhere}
@media(max-width:700px){.topbar{height:auto;min-height:77px;padding:10px 0;flex-wrap:wrap}.topbar-tools{max-width:100%;flex-wrap:wrap}.bottom-nav{height:auto;min-height:74px;padding-bottom:env(safe-area-inset-bottom,0px)}.bottom-nav a{min-width:0;overflow-wrap:anywhere;white-space:normal}.bottom-nav a span{max-width:100%;white-space:normal;overflow-wrap:anywhere}.app-main{padding-bottom:calc(165px + env(safe-area-inset-bottom,0px))}.toast{bottom:calc(110px + env(safe-area-inset-bottom,0px))}.partner-detail-heading{flex-wrap:wrap}.partner-detail-heading>div{flex:1 1 180px}.partner-code-row{flex-wrap:wrap}.code-copy{max-width:100%;white-space:normal;overflow-wrap:anywhere}.account-panel{padding:20px}.analysis-layout .board-area>h2{overflow-wrap:anywhere}.personal-greeting{flex-wrap:wrap}}

.coffee-card{margin-bottom:16px;border:1px solid var(--gold,#d8b569)}.coffee-toggle{display:flex;align-items:center;gap:14px;width:100%;border:0;background:none;color:inherit;text-align:left;padding:2px;min-height:48px;cursor:pointer;font:inherit}.coffee-toggle>span:nth-child(2){display:grid;gap:4px;flex:1;min-width:0}.coffee-toggle small{font-size:.8rem;opacity:.75}.coffee-amounts{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}.coffee-amounts .btn{white-space:normal}.live-controls{display:flex;gap:10px;flex-wrap:wrap}.live-clock{font-size:1.6rem;font-variant-numeric:tabular-nums}.live-status{min-height:1.5em}.live-layout{display:grid;grid-template-columns:minmax(0,580px) minmax(240px,1fr);gap:20px}@media(max-width:800px){.live-layout{grid-template-columns:minmax(0,1fr)}}

/* Live lobby and board: the board stays square across window sizes. */
.live-layout{display:grid;grid-template-columns:minmax(0,1.6fr) minmax(0,1fr);align-items:start;gap:16px}
.live-layout>*{min-width:0}
.live-lobby,.live-friends,.live-invitation,.live-form{display:grid;gap:12px}
.live-filter{min-width:0;margin:0;padding:0;border:0}
.live-filter legend{margin-bottom:8px;font-weight:700}
.live-gap{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:5px}
.live-gap .btn{padding-inline:4px;min-width:0}
.live-form input,.live-lobby select{width:100%;min-width:0}
.live-code{display:block;font-size:clamp(1.3rem,5vw,2.5rem);letter-spacing:.12em;overflow-wrap:anywhere;user-select:all}
.live-profile summary{cursor:pointer;font-weight:700;min-height:44px;align-content:center}
.live-match{display:grid;gap:12px}
.live-board-area{width:100%;max-width:640px;margin-inline:auto;display:grid;gap:8px}
.live-board-area .board-frame{width:100%;min-width:0}
.live-player{display:flex;align-items:center;justify-content:space-between;gap:8px;min-width:0;border:1px solid var(--line);border-radius:12px;padding:7px 10px}
.live-player-id{min-width:0;overflow-wrap:anywhere}
.live-player .live-clock{flex:none;padding:4px 8px;border-radius:8px}
.live-player.is-turn .live-clock{background:var(--gold,#e4bb69);color:#251129}
.live-match-actions{width:100%;max-width:640px;margin-inline:auto}
.live-controls .btn,.live-friends .btn,.live-lobby .btn,.live-form .btn{min-height:44px;white-space:normal}
.analysis-training{border-top:1px solid var(--line);margin-top:16px;padding-top:16px}
@media(max-width:1050px){.live-layout{grid-template-columns:minmax(0,1fr)}}
@media (701px <= width <= 1000px){
 .sidebar{display:none}
 .app-main{margin-left:0}
 .topbar,.content{max-width:820px}
 .mobile-brand,.bottom-nav{display:flex}
 .app-main{padding-bottom:105px}
}
@media(max-width:380px){
 .app-main{padding-left:max(9px,env(safe-area-inset-left));padding-right:max(9px,env(safe-area-inset-right))}
 .live-layout .card{padding:12px}
 .live-player{padding:5px 7px}
 .live-player .live-clock{font-size:1.25rem}
 .live-controls .btn{flex:1 1 115px}
}
@media (horizontal-viewport-segments:2){
 .app-main{margin-left:0;padding-right:max(12px,calc(100vw - env(viewport-segment-right 0 0) + 12px))}
 .sidebar{display:none}
 .mobile-brand,.bottom-nav{display:flex}
 .bottom-nav{right:auto;width:env(viewport-segment-width 0 0)}
 .live-layout,.exercise-layout,.analysis-layout{grid-template-columns:minmax(0,1fr)}
}

.partner-entry-button {
 width:100%; border:0; background:transparent; text-align:left; cursor:pointer;
}
.partner-detail.naturfranz { container-type:inline-size; }
.partner-art-wide,.partner-art-caption { display:none; }
.partner-art-product {
 position:relative; overflow:hidden; aspect-ratio:344 / 309;
 width:min(100%,350px); margin:20px auto; border-radius:18px;
}
.partner-art-product img {
 position:absolute; inset:0 auto auto 0; display:block;
 width:calc(100% * 806 / 344); max-width:none; height:auto;
}
@container (min-width:620px) {
 .partner-art-wide {
  display:block; position:relative; margin-top:18px;
 }
 .partner-art-wide img { display:block; width:100%; height:auto; }
 .partner-art-wide ~ .partner-art-stacked { display:none; }
 .partner-art-caption { display:block; text-align:center; }
 .partner-art-action {
  position:absolute; display:block; padding:0; border:0; border-radius:12px;
  background:transparent; cursor:pointer;
 }
 .partner-art-action:hover { box-shadow:inset 0 0 0 2px #fff1b5; }
 .partner-art-action:focus-visible { outline:3px solid #fff1b5; outline-offset:2px; }
 .partner-art-copy { inset:55.5% 1.9% 27.2% 67.8%; }
 .partner-art-shop { inset:75.9% 1.9% 4.8% 44.6%; }
}

/* AdSense display ad: only inserted by the home view. */
.home-ad{margin:0 0 20px;padding:12px 16px;overflow:hidden}.home-ad .eyebrow{display:block;margin-bottom:8px;font-size:9px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}.home-ad ins.adsbygoogle{display:block;min-height:90px;max-width:100%;overflow:hidden}

.subscription-card{margin:18px 0;padding:18px;border:1px solid #bc9659;border-radius:14px;background:linear-gradient(120deg,#34203e,#24122f)}.subscription-card h3{margin:0 0 10px;color:var(--gold)}.subscription-card p{margin:8px 0;line-height:1.7}.subscription-card .btn{margin-top:8px}