:root{color:#f8fafc;font-synthesis:none;text-rendering:optimizelegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;background:#182131;font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,sans-serif}body{min-width:320px;margin:0}#root{min-height:100vh}*{box-sizing:border-box}button,input{font:inherit}button{color:#f8fafc;cursor:pointer;background:#223047;border:1px solid #3f4a5f;border-radius:8px;padding:12px 16px;font-weight:700;transition:background .16s,border-color .16s,color .16s,transform .16s}button:disabled{cursor:not-allowed;opacity:.48}button:hover{background:#2d3c57}button:focus-visible,input:focus-visible{outline-offset:2px;outline:3px solid #e2b714}.app-shell{color:#e5e7eb;background:#182131;min-height:100vh}@media (width<=640px){:root{--app-header-height:50px;--mobile-page-padding:clamp(10px, 3.5vw, 14px);--mobile-gap:clamp(8px, 2.5vw, 12px);--mobile-card-padding:clamp(12px, 3.8vw, 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minmax(320px,420px);justify-content:center;align-items:center;gap:clamp(18px,3vw,34px);max-width:1120px;margin:0 auto}.setup-grid .preview-board{justify-self:end;max-width:min(62vh,620px,100%)}.setup-grid .setup-panel{justify-self:start;width:min(100%,420px)}.active-game-layout{--board-size:min(66vh, 620px, calc(100vw - 540px));grid-template-columns:minmax(360px, var(--board-size)) minmax(300px, 380px);justify-content:center;align-items:start;gap:clamp(10px,1.4vw,18px)}.board-card{border-radius:10px;padding:10px}.large-board{width:100%;max-width:min(70vh,660px,100%);margin:0 auto}.active-game-layout .large-board{max-width:var(--board-size)}.preview-board{max-width:min(72vh,700px,100%)}.setup-panel{border-radius:10px;justify-self:start;width:min(100%,460px);padding:32px}.slider-label,.range-caps{justify-content:space-between;align-items:center;display:flex}.slider-label{margin-bottom:12px}.slider-label 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0}.result-overlay{z-index:20;background:#080d16b8;justify-content:center;align-items:center;padding:24px;display:flex;position:fixed;inset:0}.result-card{text-align:center;border-radius:10px;width:100%;max-width:520px;padding:28px;position:relative}.result-close-button{background:#101827;border-radius:999px;justify-content:center;align-items:center;width:40px;height:40px;padding:0;font-size:1.35rem;display:inline-flex;position:absolute;top:14px;right:14px}.result-card h2{margin-bottom:12px;font-size:clamp(2rem,6vw,4rem)}.result-actions{gap:10px;margin-top:24px;display:grid}.empty-panel{text-align:center;border-radius:10px;padding:56px}.empty-panel h1{margin:0}.back-button{position:absolute;top:24px;left:24px}@media (width<=1100px){.setup-grid,.active-game-layout{--board-size:min(68vh, 620px, 100%);grid-template-columns:minmax(0,1fr)}.setup-grid .preview-board,.setup-grid 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button{min-height:46px}.list-actions{grid-template-columns:repeat(2,minmax(0,1fr))}.list-actions .list-main-action{grid-column:1/-1}.centered-screen{padding:calc(var(--app-header-height) + env(safe-area-inset-top) + 8px) var(--mobile-page-padding) var(--mobile-bottom-safe);align-content:start;gap:8px}.centered-screen>.auth-corner{justify-self:end;width:fit-content;max-width:100%;margin-bottom:6px;position:static}.menu-card{border-radius:var(--mobile-card-radius);width:100%;padding:18px 14px}.menu-card h1{white-space:normal;margin-bottom:6px;font-size:1.8rem;line-height:1}.menu-subheading{margin-bottom:14px;font-size:.95rem}.menu-progress-row{gap:12px;margin:-4px auto 12px;font-size:.98rem}.menu-actions{gap:8px;width:100%;max-width:none}.menu-primary-actions,.menu-secondary-actions{gap:8px}.menu-actions button{width:100%;min-height:44px;padding-block:9px}}.voice-panel{grid-template-columns:64px 1fr;align-items:center;gap:14px;width:100%;display:grid}.voice-controls{gap:8px;width:100%;display:grid}.voice-controls select{color:#fff;background:#172133;border:1px solid #3a4659;border-radius:8px;width:100%;padding:8px 10px}@media (width<=520px){.voice-panel{grid-template-columns:1fr;justify-items:center}}.theme-royal{background:linear-gradient(135deg,#10213d,#182f59 55%,#10213d)}.theme-classic{background:linear-gradient(135deg,#1f2a24,#3a2f1e)}.settings-panel{border-radius:18px;width:min(100%,980px);max-width:980px;padding:clamp(28px,5vw,46px)}.settings-header{text-align:center;margin-bottom:28px}.settings-header h1{margin-bottom:12px;font-size:clamp(2.2rem,5vw,4.2rem)}.eyebrow{color:#e2b714;letter-spacing:.16em;text-transform:uppercase;margin-bottom:10px;font-weight:800}.settings-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:16px;display:grid}.settings-card{background:linear-gradient(#ffffff09,#0f172a47);border:1px solid #3a4659;border-radius:14px;gap:12px;padding:20px;display:grid}.settings-card-wide{grid-column:1/-1}.settings-card h2{margin:0;font-size:1.35rem}.settings-label,.settings-help{color:#aeb8c8}.settings-card select{color:#fff;background:#101827;border:1px solid #3a4659;border-radius:10px;width:100%;padding:12px}.theme-options{grid-template-columns:repeat(3,1fr);gap:10px;display:grid}.theme-options button{place-items:center;gap:8px;min-height:92px;display:grid}.theme-options button.selected{color:#111827;background:#e2b714;border-color:#e2b714}.theme-swatch{border:2px solid #ffffff8c;border-radius:999px;width:30px;height:30px;display:inline-block}.theme-swatch-midnight{background:linear-gradient(135deg,#101827,#38bdf8)}.theme-swatch-royal{background:linear-gradient(135deg,#1d4ed8,#93c5fd)}.theme-swatch-classic{background:linear-gradient(135deg,#14532d,#e2b714)}.volume-slider{background:linear-gradient(90deg, #38bdf8 var(--rating-progress), #101827 var(--rating-progress))}.voice-panel{background:linear-gradient(135deg,#38bdf814,#e2b7140d);border:1px solid #94a3b847;border-radius:16px;padding:12px}.voice-panel.voice-panel-recording.voice-panel-recording{background:linear-gradient(135deg,#ef44443d,#7f1d1d5c);border-color:#f87171e6;box-shadow:0 0 0 1px #f8717161,0 0 28px #ef444457}.voice-panel-recording .dictation-transcript{color:#fee2e2;background:linear-gradient(135deg,#7f1d1dd1,#450a0ac2);border-color:#fca5a5eb;box-shadow:inset 0 0 18px #f8717147,0 0 20px #ef444433}.dictation-transcript{color:#f8fafc;text-align:left;background:#101827b8;border:1px solid #94a3b83d;border-radius:12px;align-items:center;width:100%;min-height:58px;padding:12px 14px;font-size:clamp(1.05rem,2vw,1.3rem);line-height:1.45;display:flex}.voice-panel-idle .dictation-transcript{color:#aeb8c8}.voice-panel-processing .dictation-transcript{color:#c4b5fd}.voice-panel-invalid .dictation-transcript{color:#fecdd3}.voice-panel-accepted .dictation-transcript{color:#bbf7d0}@media (width<=760px){.settings-grid,.theme-options{grid-template-columns:1fr}}.voice-state-label{color:#e2b714;letter-spacing:.12em;text-transform:uppercase;font-size:.82rem;font-weight:900}.volume-slider::-webkit-slider-thumb{border-color:#38bdf8}.volume-slider::-moz-range-thumb{border-color:#38bdf8}.volume-slider:hover::-webkit-slider-thumb{box-shadow:0 0 0 8px #38bdf82e,0 4px 14px #00000059}.volume-slider:focus-visible::-webkit-slider-thumb{box-shadow:0 0 0 8px #38bdf82e,0 4px 14px #00000059}.volume-slider:hover::-moz-range-thumb{box-shadow:0 0 0 8px #38bdf82e,0 4px 14px #00000059}.volume-slider:focus-visible::-moz-range-thumb{box-shadow:0 0 0 8px #38bdf82e,0 4px 14px #00000059}.server-record-button{color:#101827;cursor:pointer;background:linear-gradient(135deg,#e2b714,#f97316);border:0;border-radius:999px;justify-content:center;justify-self:start;align-items:center;min-height:42px;padding:10px 18px;font-weight:900;display:inline-flex;box-shadow:0 12px 24px #e2b71438}.server-record-button[aria-pressed=true]{color:#fff;background:linear-gradient(135deg,#fb7185,#ef4444)}.server-record-button:disabled{cursor:not-allowed;opacity:.62}.training-screen{padding:clamp(18px,3vw,34px)}.training-topbar{justify-content:space-between;align-items:center;max-width:1080px;margin:0 auto 16px;display:flex}.training-simple-page{border-radius:18px;max-width:1080px;margin:0 auto;padding:clamp(24px,5vw,48px)}.training-simple-page .eyebrow{color:#fff}.training-simple-page .level-number-eyebrow{color:#e2b714}.exercise-page{padding-top:clamp(18px,3vw,30px)}.exercise-coordinate{max-width:1240px}.exercise-page .exercise-title-row{margin-top:clamp(12px,2.4vw,28px)}.training-simple-page h1{color:#fff;white-space:normal;margin-bottom:14px;font-size:clamp(2.2rem,6vw,4.5rem)}.level-list{gap:14px;display:grid}.level-list-item{text-align:left;background:linear-gradient(135deg,#223047f2,#101827f2);border:1px solid #3a4659;border-radius:16px;grid-template-columns:auto minmax(0,1fr) auto;align-items:center;gap:14px;padding:18px 20px;display:grid}.level-list-item:hover{border-color:#e2b7148c;transform:translateY(-1px)}.level-list-item-open{display:none}.level-list-item-number,.coordinate-prompt span{color:#e2b714;letter-spacing:.12em;text-transform:uppercase;font-size:.82rem;font-weight:900}.level-list-item-main{gap:5px;min-width:0;display:grid}.level-list-item-heading{justify-content:flex-start;align-items:baseline;gap:14px;min-width:0;display:flex}.level-list-item strong{color:#fff;font-size:clamp(1.3rem,3vw,2rem)}.level-list-item-heading strong:first-child{text-overflow:ellipsis;white-space:nowrap;min-width:0;overflow:hidden}.level-exercise-count{color:#aeb8c8;font-size:.92rem;font-weight:750}.level-list-item-meta{justify-content:flex-end;align-items:center;gap:10px;display:flex}.level-rating-pill{color:#f8e7a0;background:#e2b71424;border:1px solid #e2b71452;border-radius:999px;padding:.35rem .6rem;font-size:.95rem;font-weight:950;line-height:1}.level-exercise-list{gap:14px;display:grid}.level-exercise-row{background:#1018277a;border:1px solid #3a4659;border-radius:16px;grid-template-columns:1fr auto;align-items:center;gap:16px;padding:18px;display:grid}.level-exercise-row h2{color:#fff;margin-bottom:8px;font-size:clamp(1.35rem,3vw,2rem)}.level-exercise-row p{color:#aeb8c8;margin:0;line-height:1.55}.exercise-title-row{grid-template-columns:1fr auto;align-items:start;gap:18px;margin-bottom:18px;display:grid}.exercise-title-row h1{margin:0}.timer-pill{color:#fde68a;text-align:center;background:#e2b7141f;border:1px solid #e2b71466;border-radius:20px;gap:2px;min-width:132px;padding:10px 18px;display:grid}.timer-pill span{color:#e2b714;letter-spacing:.12em;text-transform:uppercase;font-size:.72rem;font-weight:900}.timer-pill strong{color:#fff;letter-spacing:-.06em;font-size:clamp(2.4rem,5vw,4rem);line-height:.95}.stats-row.compact{grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;margin-bottom:22px;display:grid}.stats-row.compact div{text-align:center;background:#101827;border:1px solid #3a4659;border-radius:14px;padding:14px}.stats-row.compact span{color:#94a3b8;letter-spacing:.12em;text-transform:uppercase;margin-bottom:5px;font-size:.75rem;font-weight:900;display:block}.stats-row.compact strong{color:#fff;font-size:clamp(1.4rem,3vw,2rem)}.start-panel,.result-panel,.speed-question-card,.coordinate-prompt{background:linear-gradient(135deg,#e2b7141c,#38bdf814);border:1px solid #e2b71442;border-radius:18px;padding:clamp(18px,3vw,28px)}.start-panel{text-align:center;place-items:center;gap:18px;max-width:520px;margin:0 auto;display:grid}.start-button{min-width:min(100%,260px);min-height:64px;padding-inline:40px;font-size:clamp(1.25rem,3vw,1.65rem)}.start-panel p,.result-panel p,.coordinate-prompt 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h2{margin-bottom:0}.reconstruction-chessboard-wrap,.visual-reconstruction-chessboard-wrap,.reconstruction-board-card{overscroll-behavior:contain;touch-action:none;-webkit-user-select:none;user-select:none}.reconstruction-board-card [data-piece],.piece-tray [data-piece]{touch-action:none;-webkit-user-select:none;user-select:none;will-change:transform;justify-content:center;align-items:center;padding:3%;transition:filter 90ms,opacity 90ms,transform 90ms;display:flex}.reconstruction-board-card [data-piece] svg,.piece-tray [data-piece] svg{width:100%;max-width:100%;height:100%;max-height:100%;margin:auto;display:block}.piece-tray{touch-action:none;-webkit-user-select:none;user-select:none;background:#121a28;border:1px solid #334155;border-radius:12px;grid-template-columns:repeat(6,minmax(64px,1fr));gap:10px;padding:10px;display:grid}.tray-piece{cursor:grab;touch-action:none;-webkit-user-select:none;user-select:none;background:#202b3d;border:1px solid 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[data-piece]{padding:3%!important}.verbal-position-reconstruction-page .verbal-reconstruction-tools-drawer{max-width:var(--visual-reconstruction-board-size);background:#0f172ac7;border:1px solid #94a3b84d;border-radius:18px;width:100%;margin:12px auto 0;display:block;box-shadow:0 12px 26px #0206172e}.visual-position-reconstruction-page .visual-reconstruction-tray-slot{max-width:var(--visual-reconstruction-board-size);width:100%;margin-left:auto;margin-right:auto;overflow:visible}.visual-position-reconstruction-page .piece-tray.reconstruction-piece-tray{--visual-reconstruction-mobile-tray-gap:3px;align-items:center;gap:var(--visual-reconstruction-mobile-tray-gap);background:0 0;border:0;flex-wrap:nowrap;justify-content:flex-start;width:100%;padding:4px 3px 8px;display:flex;overflow:visible}.visual-position-reconstruction-page .tray-piece.reconstruction-tray-piece{--visual-reconstruction-mobile-tray-gap:3px;flex:0 0 min(52px, calc((var(--visual-reconstruction-board-size) - (5 * 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svg{aspect-ratio:1;max-width:100%;max-height:100%;border-radius:0!important;width:100%!important;height:100%!important}.partial-game-page .reconstruction-side-panel{box-shadow:none;background:0 0;border:0;padding:0;display:contents}.partial-game-page .partial-game-side-panel h2,.partial-game-page .partial-game-side-panel>p{display:none}.partial-game-page .partial-game-side-panel--review .reconstruction-action-stack,.partial-game-page .partial-game-side-panel--reconstruct .reconstruction-action-stack{box-shadow:none;max-width:var(--visual-reconstruction-board-size);background:0 0;border:0;grid-template-columns:1fr;gap:10px;width:100%;margin:12px auto 0;padding:0;display:grid;position:static}.partial-game-page .partial-game-side-panel--review .reconstruction-score-grid{max-width:var(--visual-reconstruction-board-size);width:100%;margin:12px auto 0;overflow:visible}.partial-game-page .visual-reconstruction-mobile-piece-tabs{max-width:var(--visual-reconstruction-board-size);background:#0f172ac7;border:1px solid #94a3b84d;border-radius:14px;order:2;grid-template-columns:repeat(2,minmax(0,1fr));gap:4px;width:100%;margin:12px auto 0;padding:4px;display:grid}.partial-game-page .visual-reconstruction-mobile-piece-tabs button{color:#e2e8f0;background:0 0;border:0;border-radius:10px;min-height:42px;padding:8px 10px;font-size:clamp(.94rem,4.2vw,1.05rem);font-weight:900}.partial-game-page .visual-reconstruction-mobile-piece-tabs button.selected{color:#e2b714;background:#e2b71429;box-shadow:inset 0 0 0 1px #e2b714}.partial-game-page .visual-reconstruction-tray-slot{max-width:var(--visual-reconstruction-board-size);order:3;width:100%;margin:12px auto 0;display:none;overflow:visible}.partial-game-page .visual-reconstruction-tray-slot-active{display:block}.partial-game-page .piece-tray.reconstruction-piece-tray{--visual-reconstruction-mobile-tray-gap:3px;align-items:center;gap:var(--visual-reconstruction-mobile-tray-gap);background:0 0;border:0;flex-wrap:nowrap;justify-content:flex-start;width:calc(100% - 5px);padding:4px 0 8px 3px;display:flex;overflow:visible;transform:translate(-1px,2px)}.partial-game-page .tray-piece.reconstruction-tray-piece{--visual-reconstruction-mobile-tray-gap:3px;flex:0 0 min(52px, calc((var(--visual-reconstruction-board-size) - (5 * var(--visual-reconstruction-mobile-tray-gap))) / 6));height:min(52px, calc((var(--visual-reconstruction-board-size) - (5 * var(--visual-reconstruction-mobile-tray-gap))) / 6));min-width:0;max-width:none;min-height:0;width:min(52px, calc((var(--visual-reconstruction-board-size) - (5 * var(--visual-reconstruction-mobile-tray-gap))) / 6));border-radius:12px;padding:0}.partial-game-page .tray-piece.reconstruction-tray-piece:nth-child(-n+3)>div{transform:translate(-2px)}.partial-game-page .tray-piece.reconstruction-tray-piece>div,.partial-game-page .tray-piece.reconstruction-tray-piece svg,.partial-game-page .tray-piece.reconstruction-tray-piece [data-piece]{height:min(52px, calc((var(--visual-reconstruction-board-size) - 15px) / 6))!important;max-height:min(52px, calc((var(--visual-reconstruction-board-size) - 15px) / 6))!important;max-width:min(52px, calc((var(--visual-reconstruction-board-size) - 15px) / 6))!important;width:min(52px, calc((var(--visual-reconstruction-board-size) - 15px) / 6))!important}.partial-game-page .reconstruction-board-card [data-piece],.partial-game-page .reconstruction-board-card [data-piece] svg,.partial-game-page #PartialGameReconstructionProvider-board [data-piece],.partial-game-page #PartialGameReconstructionProvider-board [data-piece] svg{width:100%!important;max-width:100%!important;height:100%!important;max-height:100%!important}.partial-game-page .reconstruction-board-card [data-piece],.partial-game-page #PartialGameReconstructionProvider-board [data-piece]{padding:3%!important}.partial-game-page .partial-game-tools-drawer{max-width:var(--visual-reconstruction-board-size);background:#0f172ac7;border:1px solid #94a3b84d;border-radius:18px;width:100%;margin:12px auto 0;display:block;box-shadow:0 12px 26px #0206172e}}.reconstruction-page--occupied-hints{--reconstruction-occupied-hint-background:radial-gradient(circle at center, #afa89ca8 0 18%, transparent 19%);--reconstruction-mobile-occupied-hint-background:radial-gradient(circle at center, #afa89ca8 0 18%, transparent 19%)}@media (width<=640px){.partial-game-page.training-simple-page,.partial-game-page.exercise-page,.partial-game-page.reconstruction-page,.partial-game-page.visual-reconstruction-page{--visual-reconstruction-card-padding:0px;--partial-game-mobile-board-size:min(100%, 430px, 54dvh);--visual-reconstruction-board-size:var(--partial-game-mobile-board-size);--visual-reconstruction-mobile-square-size:calc(var(--visual-reconstruction-board-size) / 8);--visual-reconstruction-drag-piece-size:clamp(44px, calc(var(--visual-reconstruction-board-size) / 8), 56px)}.partial-game-page .reconstruction-board-card{background:#0f172ac7;border-color:#94a3b84d;border-radius:18px;gap:0;max-width:min(100%,430px);padding:14px 0;overflow:hidden;box-shadow:0 18px 38px #02061742}.partial-game-page .reconstruction-board-card--reconstruct{padding-top:14px}.partial-game-page .partial-game-mobile-status-row{width:100%;max-width:calc(100% - 28px);margin:0 auto 12px}.partial-game-page .partial-game-reconstruction-top-actions{order:0;grid-template-columns:repeat(2,minmax(0,1fr));align-self:stretch;gap:10px;width:100%;max-width:calc(100% - 28px);margin:0 auto 12px;display:grid}.partial-game-page .partial-game-reconstruction-top-actions .primary-button,.partial-game-page .partial-game-reconstruction-top-actions .secondary-button{border-radius:12px;width:100%;min-width:0;min-height:48px;padding:10px 12px}.partial-game-page .partial-game-reconstruction-top-actions .primary-button{color:#101827;background:#e2b714;border-color:#e2b714}.partial-game-page .partial-game-reconstruction-top-actions .secondary-button{color:#e2e8f0;background:#0f172ab8;border-color:#94a3b857}.partial-game-page .partial-game-side-panel--reconstruct .mobile-reconstruction-actions{display:none}.partial-game-page .reconstruction-board-card>*,.partial-game-page .visual-reconstruction-board-area,.partial-game-page .visual-reconstruction-chessboard-wrap,.partial-game-page .visual-reconstruction-mobile-piece-tabs,.partial-game-page .visual-reconstruction-tray-slot,.partial-game-page .partial-game-tools-drawer,.partial-game-page .reconstruction-score-grid{max-width:calc(100% - 28px);margin-left:auto;margin-right:auto}.partial-game-page .reconstruction-board-zone,.partial-game-page .visual-reconstruction-board-stage{gap:0;width:100%;max-width:100%}.partial-game-page .visual-reconstruction-board-area,.partial-game-page .visual-reconstruction-chessboard-wrap{justify-self:stretch;width:100%;max-width:100%}.partial-game-page .visual-reconstruction-chessboard-wrap.shared-chessboard-frame,.partial-game-page .partial-game-hidden-board{--board-size:100%;--shared-board-size:100%;--shared-board-max-size:100%;width:100%;max-width:100%}.partial-game-page .visual-reconstruction-mobile-piece-tabs,.partial-game-page .visual-reconstruction-tray-slot,.partial-game-page .partial-game-tools-drawer,.partial-game-page .reconstruction-score-grid{margin-top:12px}.partial-game-page .visual-reconstruction-tray-slot{max-width:100%;margin-left:0;margin-right:auto;overflow:visible}.partial-game-page .piece-tray.reconstruction-piece-tray{--visual-reconstruction-mobile-tray-gap:4px;gap:var(--visual-reconstruction-mobile-tray-gap);justify-content:flex-start;width:100%;padding:2px;overflow:visible;transform:none}.partial-game-page .tray-piece.reconstruction-tray-piece{--visual-reconstruction-mobile-piece-size:clamp(40px, calc((var(--visual-reconstruction-board-size) - (5 * var(--visual-reconstruction-mobile-tray-gap)) - 4px) / 6), 54px);flex:0 0 var(--visual-reconstruction-mobile-piece-size);height:var(--visual-reconstruction-mobile-piece-size);min-height:var(--visual-reconstruction-mobile-piece-size);width:var(--visual-reconstruction-mobile-piece-size);padding:2px;overflow:visible}.partial-game-page .tray-piece.reconstruction-tray-piece:nth-child(-n+3)>div{transform:none}.partial-game-page .tray-piece.reconstruction-tray-piece>div,.partial-game-page .tray-piece.reconstruction-tray-piece [data-piece],.partial-game-page .tray-piece.reconstruction-tray-piece svg{height:calc(var(--visual-reconstruction-mobile-piece-size) - 4px)!important;max-height:calc(var(--visual-reconstruction-mobile-piece-size) - 4px)!important;max-width:calc(var(--visual-reconstruction-mobile-piece-size) - 4px)!important;width:calc(var(--visual-reconstruction-mobile-piece-size) - 4px)!important}}@media (width<=768px){.partial-game-page .partial-game-side-panel--reconstruct .mobile-reconstruction-actions{display:none}}.exercise-blindfold-puzzles.blindfold-puzzle-exercise{max-width:1280px;max-height:none;padding:clamp(12px,2vw,22px)}.blindfold-puzzle-exercise .blindfold-exercise-title-row{margin-top:0;margin-bottom:10px}.blindfold-puzzle-exercise .blindfold-exercise-title-row h1{font-size:clamp(1.9rem,3.4vw,3rem);line-height:1}.blindfold-mobile-stats{display:none}.blindfold-exercise-layout{grid-template-columns:minmax(0,1fr) minmax(300px,380px);justify-content:center;align-items:start;gap:clamp(12px,1.6vw,20px);display:grid}.blindfold-board-column{align-content:start;gap:10px;min-width:0;display:grid}.blindfold-desktop-stats{margin-bottom:0}.blindfold-desktop-stats.stats-row.compact{gap:8px}.blindfold-desktop-stats.stats-row.compact div{padding:9px 12px}.blindfold-desktop-stats.stats-row.compact span{margin-bottom:2px;font-size:.68rem}.blindfold-desktop-stats.stats-row.compact strong{font-size:clamp(1.1rem,1.8vw,1.45rem)}.blindfold-board-focus.blindfold-board-card.shared-chessboard-frame{--shared-board-max-size:min(calc(100dvh - 190px), 640px, 100%);width:min(100%, var(--shared-board-max-size));border-radius:18px;justify-self:center;padding:8px;overflow:hidden}.blindfold-board-focus>div,.blindfold-board-focus svg,.blindfold-board-focus canvas{border-radius:12px}.blindfold-hidden-board.hidden-board-placeholder{aspect-ratio:1;box-sizing:border-box;align-self:stretch;width:100%;height:100%;min-height:0;padding:clamp(12px,2vw,20px);overflow:auto}.blindfold-hidden-board strong{font-size:clamp(1.8rem,3.3vw,3rem)}.blindfold-hidden-board span{font-size:clamp(.9rem,1.6vw,1.1rem)}.blindfold-controls-card{grid-template-rows:auto auto auto auto;align-content:start;gap:10px;min-height:0;padding:12px;display:grid}.blindfold-turn-heading{text-align:center;margin:0;font-size:clamp(1.25rem,2vw,1.65rem);line-height:1.1}.blindfold-move-list-panel.move-list-panel{height:auto;min-height:118px;max-height:150px;padding:8px;overflow-y:auto}.blindfold-move-list-panel .move-list{gap:5px}.blindfold-move-list-panel .move-list li{grid-template-columns:30px minmax(0,1fr) minmax(0,1fr);gap:6px;padding:5px 6px}.blindfold-move-list-panel .move-list-move{min-height:28px;padding:2px 5px}.blindfold-review-navigation{gap:6px}.blindfold-review-navigation button{min-height:38px;padding:7px 8px}.blindfold-actions{grid-template-columns:1fr;gap:8px;display:grid}.blindfold-actions button{min-height:40px;padding:8px 10px}.blindfold-input-panel.move-input-panel{grid-template-columns:92px minmax(0,1fr);width:100%;max-width:none;margin:0}.blindfold-input-panel .input-mode-buttons{gap:6px}.blindfold-input-panel .input-mode-buttons button{min-height:38px;padding:7px 8px}.blindfold-input-panel .move-entry-bar{min-height:86px;padding:8px}.blindfold-input-panel .voice-panel{gap:8px;width:100%}.blindfold-input-panel .dictation-transcript{font-size:.9rem;line-height:1.3}.blindfold-feedback-line{background:#101827d1;border:1px solid #3a4659;border-radius:12px;min-height:0;margin:0;padding:8px 10px;font-size:.95rem;line-height:1.25}@media (width>=981px) and (height>=700px){.exercise-blindfold-puzzles.blindfold-puzzle-exercise{max-height:calc(100dvh - 28px);overflow:hidden}}@media (width<=1100px){.blindfold-exercise-layout{grid-template-columns:minmax(0,1fr) minmax(280px,340px)}.blindfold-board-focus.blindfold-board-card.shared-chessboard-frame{--shared-board-max-size:min(calc(100dvh - 200px), 590px, 100%)}}@media (width<=980px){.blindfold-exercise-layout{grid-template-columns:1fr}.blindfold-board-focus.blindfold-board-card.shared-chessboard-frame{--shared-board-max-size:min(72dvh, 680px, 100%)}}@media (width<=640px){.exercise-blindfold-puzzles.blindfold-puzzle-exercise{max-width:100%;padding:var(--mobile-page-padding);overflow-x:hidden}.blindfold-puzzle-exercise .blindfold-exercise-title-row{align-items:stretch;gap:8px;margin-bottom:8px}.blindfold-puzzle-exercise .blindfold-exercise-title-row h1{font-size:clamp(1.55rem,7vw,2.1rem)}.blindfold-puzzle-exercise .eyebrow{font-size:.72rem;line-height:1.25}.blindfold-desktop-stats{display:none!important}.blindfold-mobile-stats{gap:8px;margin-bottom:8px;display:grid}.blindfold-mobile-stats-summary{color:#f8fafc;text-align:center;white-space:normal;background:#101827;border:1px solid #e2b7146b;border-radius:999px;width:100%;min-height:44px;padding:9px 12px;font-size:clamp(.82rem,3.6vw,.95rem);font-weight:900;line-height:1.25}.blindfold-mobile-stats-grid.stats-row.compact{grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-bottom:0}.blindfold-mobile-stats-grid.stats-row.compact div{padding:9px}.blindfold-mobile-stats-grid.stats-row.compact span{margin-bottom:2px;font-size:.66rem}.blindfold-mobile-stats-grid.stats-row.compact strong{font-size:1.25rem}.blindfold-exercise-layout,.blindfold-board-column,.blindfold-controls-card{gap:var(--mobile-gap)}.blindfold-board-column{order:1}.blindfold-controls-card{box-shadow:none;background:0 0;border:0;order:2;padding:0}.blindfold-board-focus.blindfold-board-card.shared-chessboard-frame{--mobile-chessboard-size:min(calc(100vw - 2 * var(--mobile-page-padding)), 430px, 48dvh);--shared-board-max-size:var(--mobile-chessboard-size);--shared-board-size:var(--mobile-chessboard-size);width:var(--mobile-chessboard-size);border:1px solid #3a4659;padding:4px;border-radius:12px!important}.blindfold-hidden-board.hidden-board-placeholder{border-radius:8px;padding:10px}.blindfold-hidden-board strong{font-size:clamp(1.4rem,8vw,2.1rem)}.blindfold-hidden-board span,.blindfold-hidden-piece-list p{font-size:clamp(.72rem,3vw,.9rem);line-height:1.3}.blindfold-hidden-piece-list{gap:6px;max-width:96%}.blindfold-turn-heading{display:none}.blindfold-move-list-panel.move-list-panel{order:1;min-height:96px;max-height:132px}.blindfold-review-navigation{order:2;gap:8px}.blindfold-review-navigation button,.blindfold-actions button,.blindfold-input-panel .input-mode-buttons button,.blindfold-input-panel .move-entry-bar button{min-height:46px}.blindfold-actions{order:3;gap:8px}.blindfold-actions button{width:100%}.blindfold-input-panel.move-input-panel{order:4;grid-template-columns:1fr;gap:8px}.blindfold-input-panel .input-mode-buttons{grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.blindfold-input-panel .move-entry-bar{align-items:stretch;min-height:86px}.blindfold-input-panel .voice-panel{align-items:center}.blindfold-input-panel .voice-controls{min-width:0}.blindfold-feedback-line{order:2;padding:8px;font-size:.9rem}}@media (width<=780px) and (orientation:landscape){.blindfold-board-focus.blindfold-board-card.shared-chessboard-frame{--mobile-chessboard-size:min(48dvh, calc(100vw - 2 * var(--mobile-page-padding)), 380px)}.blindfold-move-list-panel.move-list-panel{max-height:110px}}.blindfold-move-card{display:contents}.blindfold-hidden-icon{color:#94a3b8;margin-bottom:4px;font-size:clamp(2.4rem,7vw,4rem);line-height:1}@media (width<=640px){.with-mobile-app-header{--app-header-height:44px}.exercise-blindfold-puzzles.blindfold-puzzle-exercise{box-shadow:none;padding:6px var(--mobile-page-padding) max(8px, env(safe-area-inset-bottom));background:0 0;border:0;gap:8px;width:100%;margin:0 auto;display:grid}.blindfold-puzzle-exercise .blindfold-exercise-title-row{text-align:center;justify-content:center;margin-bottom:0}.blindfold-puzzle-exercise .blindfold-exercise-title-row h1{font-size:clamp(1.35rem,6vw,1.75rem)}.blindfold-puzzle-exercise .blindfold-exercise-title-row .eyebrow,.blindfold-puzzle-exercise .blindfold-exercise-title-row .training-info-button{display:none}.blindfold-mobile-stats{gap:6px;margin-bottom:0}.blindfold-mobile-stats-summary{border-radius:8px;min-height:32px;padding:6px 10px;font-size:clamp(.72rem,3.15vw,.84rem)}.blindfold-mobile-stats-summary:after{content:"⌄";margin-left:8px;display:inline-block}.blindfold-mobile-stats-summary[aria-expanded=true]:after{content:"⌃"}.blindfold-mobile-stats-grid.stats-row.compact{gap:6px}.blindfold-mobile-stats-grid.stats-row.compact div{border-radius:10px;min-height:58px;padding:7px 9px}.blindfold-exercise-layout,.blindfold-board-column,.blindfold-controls-card{gap:8px}.blindfold-board-focus.blindfold-board-card.shared-chessboard-frame{--mobile-chessboard-size:min(calc(100vw - 2 * var(--mobile-page-padding)), 54dvh, 460px);box-shadow:none;background:0 0;border:0;padding:0}.blindfold-board-focus>div,.blindfold-board-focus svg,.blindfold-board-focus canvas{border-radius:6px}.blindfold-hidden-board.hidden-board-placeholder{text-align:center;background:linear-gradient(145deg,#0f172af0,#020617e0);border:1px dashed #94a3b86b;flex-direction:column;justify-content:center;display:flex;overflow:hidden}.blindfold-hidden-board strong{font-size:clamp(1.45rem,7vw,2rem);line-height:1.1}.blindfold-hidden-board span:not(.blindfold-hidden-icon){max-width:22ch}.blindfold-controls-card{display:contents}.blindfold-move-card{background:#101827d6;border:1px solid #3a4659;border-radius:16px;order:2;gap:8px;min-width:0;padding:8px;display:grid}.blindfold-move-card .blindfold-move-list-panel.move-list-panel{background:0 0;border:0;border-radius:10px;padding:0}.blindfold-turn-heading{text-align:left;font-size:1rem;display:block}.blindfold-move-list-panel.move-list-panel{min-height:42px;max-height:104px}.blindfold-move-list-panel .move-list li{grid-template-columns:24px minmax(0,1fr) minmax(0,1fr);min-height:30px;padding:4px 6px}.blindfold-review-navigation{order:3;grid-template-columns:repeat(4,minmax(0,1fr));display:grid}.blindfold-review-navigation button{border-radius:8px;min-height:44px}.blindfold-actions{order:4;grid-template-columns:1fr;gap:6px;display:grid}.blindfold-actions button{border-radius:8px;min-height:44px}.blindfold-actions .primary-button,.blindfold-actions button:last-child:not(:nth-child(2)){min-height:40px}.blindfold-input-panel.move-input-panel{bottom:max(6px, env(safe-area-inset-bottom));z-index:10;background:#101827f0;border:1px solid #3a4659;border-radius:16px;order:5;gap:8px;padding:8px;position:sticky;box-shadow:0 -10px 28px #0206173d}.blindfold-input-panel .input-mode-buttons button{border-radius:10px;min-height:42px}.blindfold-input-panel .move-entry-bar{background:0 0;border:0;min-height:76px;padding:0}.blindfold-input-panel .voice-panel{background:0 0;border:0;grid-template-columns:auto minmax(0,1fr);padding:0;display:grid}.blindfold-input-panel .dictation-transcript{min-height:58px;padding:10px 12px}}@media (width<=380px){.blindfold-board-focus.blindfold-board-card.shared-chessboard-frame{--mobile-chessboard-size:min(calc(100vw - 2 * var(--mobile-page-padding)), 50dvh)}.blindfold-input-panel .dictation-transcript{font-size:.84rem}}.blindfold-mobile-next-button{display:none}@media (width<=640px){.exercise-blindfold-puzzles.blindfold-puzzle-exercise{box-shadow:none;min-height:auto;padding:14px 0 calc(12px + env(safe-area-inset-bottom));background:0 0;border:0;gap:8px;overflow:hidden visible}.blindfold-puzzle-exercise .blindfold-exercise-title-row,.blindfold-mobile-stats,.blindfold-desktop-stats,.blindfold-move-card,.blindfold-review-navigation,.blindfold-feedback-line{display:none!important}.blindfold-exercise-layout{grid-template-columns:minmax(0,1fr);gap:10px;display:grid}.blindfold-controls-card{display:contents}.blindfold-actions{margin-inline:var(--mobile-page-padding);min-width:0;width:calc(100% - (2 * var(--mobile-page-padding)));background:0 0;border:0;order:1;grid-template-columns:repeat(2,minmax(0,1fr));gap:8px;margin-top:14px;padding:0;display:grid}.blindfold-actions button{border-radius:8px;width:100%;min-height:42px;padding:8px}.blindfold-actions button:nth-child(n+3){display:none}.blindfold-board-column{order:2;justify-items:center;gap:0;width:100%;min-width:0;display:grid}.blindfold-board-focus.blindfold-board-card.shared-chessboard-frame{--mobile-chessboard-size:min(calc(100vw - (2 * var(--mobile-page-padding))), 47dvh, 480px);--shared-board-max-size:var(--mobile-chessboard-size);--shared-board-size:var(--mobile-chessboard-size);box-shadow:none;max-width:100vw;width:var(--mobile-chessboard-size);background:0 0;border:0;justify-self:center;padding:0;overflow:hidden;border-radius:0!important}.blindfold-board-focus>div,.blindfold-board-focus svg,.blindfold-board-focus canvas{border-radius:0!important}.blindfold-hidden-board.hidden-board-placeholder{min-height:var(--mobile-chessboard-size);border-radius:0}.blindfold-hidden-board span:not(.blindfold-hidden-icon){display:none}.blindfold-input-panel.move-input-panel{box-shadow:none;margin:0 var(--mobile-page-padding);min-width:0;width:calc(100% - (2 * 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