: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}.centered-screen{place-items:center;padding:32px;display:grid}.panel,.board-card{background:#202b3d;border:1px solid #3a4659;box-shadow:0 18px 36px #0409123d}.menu-card{text-align:center;border-radius:12px;width:min(100%,860px);max-width:860px;padding:clamp(32px,7vw,64px)}h1,h2,p{margin-top:0}h1,h2{color:#fff;letter-spacing:-.035em}h1{margin-bottom:34px;font-size:clamp(2.7rem,7vw,6rem);line-height:.92}h2{margin-bottom:20px;font-size:clamp(1.7rem,3vw,2.4rem)}.menu-card h1{white-space:nowrap;margin-bottom:16px;font-size:clamp(1rem,5.2vw,3.5rem)}.menu-subheading{color:#cbd5e1;max-width:44rem;margin:0 auto 34px;font-size:clamp(1rem,2.6vw,1.35rem);line-height:1.35}.menu-actions{gap:14px;max-width:300px;margin:0 auto;display:grid}.primary-button{color:#101827;background:#e2b714;border-color:#e2b714}.primary-button:hover{background:#f1c936}.secondary-button{background:#1b2638}.danger-button{background:#9f2936;border-color:#c2414c}.danger-button:hover{background:#b73744}.play-screen{display:flex}.side-menu{background:#121a28;border-right:1px solid #3a4659;width:220px;min-height:100vh;padding:14px;transition:width 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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 strong{color:#e2b714;font-size:1.4rem}.engine-slider{--rating-progress:35%;appearance:none;background:linear-gradient(90deg, #e2b714 var(--rating-progress), #101827 var(--rating-progress));cursor:pointer;border:1px solid #3a4659;border-radius:999px;width:100%;height:18px;padding:0}.engine-slider::-webkit-slider-thumb{appearance:none;background:#fff;border:4px solid #e2b714;border-radius:50%;width:34px;height:34px;transition:transform .16s,box-shadow .16s;box-shadow:0 4px 14px 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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)}.moves-column{grid-template-columns:1fr;gap:10px;display:grid}.move-list-panel{height:260px;min-height:220px}}@media 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.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}.voice-orb span{color:#0f172a;justify-content:center;align-items:center;font-size:1.2rem;display:flex}.voice-orb.listening:after,.voice-orb.speech:after,.voice-orb.processing:after{content:"";border:2px solid #38bdf899;border-radius:999px;animation:1.2s infinite voice-pulse;position:absolute;inset:-7px}.voice-orb.speech{border-color:#e2b714}.voice-orb.speech span{background:linear-gradient(90deg,#e2b714,#f97316)}.voice-orb.processing:after{border-color:#a78bfa #0000;animation:.9s linear infinite voice-spin}.voice-orb.accepted{border-color:#22c55e}.voice-orb.accepted span{background:#22c55e}.voice-orb.invalid,.voice-orb.error{border-color:#fb7185}.voice-orb.invalid span,.voice-orb.error span{background:#fb7185}@keyframes voice-spin{to{transform:rotate(360deg)}}@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}.voice-orb.recording,.voice-orb.heard,.voice-orb.parsing,.voice-orb.transcribing{border-color:#e2b714}.voice-orb.recording span,.voice-orb.heard span,.voice-orb.parsing span,.voice-orb.transcribing 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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 p{color:#cbd5e1;line-height:1.6}.result-panel{max-width:560px;margin:0 auto;padding:clamp(14px,2.4vw,22px)}.result-panel h2{margin-bottom:8px}.result-panel p{margin-bottom:0}.result-actions-row{justify-content:flex-end;margin-top:12px;display:flex}.result-actions-row .primary-button{min-width:190px;min-height:58px;font-size:1.2rem}.speed-question-card{text-align:center;max-width:680px;margin:0 auto}.speed-question-card>strong{color:#fff;letter-spacing:-.08em;margin-bottom:24px;font-size:clamp(5rem,18vw,10rem);line-height:.9;display:block}.answer-buttons{gap:12px;margin-top:14px;display:grid}.answer-buttons.two-up{grid-template-columns:repeat(2,minmax(0,1fr))}.answer-buttons button{min-height:70px;font-size:1.25rem}.speed-feedback{color:#fde68a;min-height:1.4em;margin:18px 0 0;font-weight:900}.coordinate-layout{grid-template-columns:minmax(280px,360px) minmax(520px,680px);justify-content:center;align-items:start;gap:clamp(18px,3vw,28px);display:grid}.exercise-coordinate .coordinate-layout{grid-template-columns:minmax(0,820px) minmax(180px,240px);place-items:start stretch;gap:clamp(18px,3vw,32px)}.coordinate-board-column{justify-items:center;min-width:0;display:grid}.coordinate-board-stage{width:100%;max-width:min(80vh,820px,100%);position:relative}.exercise-coordinate .training-board-shell{max-width:100%}.coordinate-side-panel{gap:14px;width:100%;display:grid}.stats-row.compact.coordinate-stats{grid-template-columns:1fr;width:100%;margin-bottom:0}.stats-row.compact.coordinate-stats div{padding:16px}.coordinate-fixed-target{color:#fff;letter-spacing:-.04em;text-align:center;text-shadow:0 8px 20px #00000073;font-size:clamp(1.5rem,3vw,2.4rem);font-weight:500;line-height:1}.coordinate-action-button,.coordinate-side-toggle{width:100%}.training-board-layout{grid-template-columns:minmax(300px,380px) minmax(600px,720px)}.training-board-page{max-width:1280px}.coordinate-prompt{background:linear-gradient(#ffffff09,#0f172a57);border:1px solid #3a4659;border-radius:18px;gap:14px;padding:clamp(18px,3vw,28px);display:grid}.exercise-coordinate .coordinate-prompt{box-shadow:none;pointer-events:none;text-align:center;background:0 0;border:0;justify-items:center;width:min(78%,420px);padding:0;animation:1.8s forwards coordinate-fade;position:absolute;top:50%;left:50%;transform:translate(-50%,-50%)}.coordinate-prompt strong{color:#fff;font-size:clamp(2.3rem,7vw,4.8rem);line-height:.95;display:block}.exercise-coordinate .coordinate-prompt strong{letter-spacing:-.08em;text-shadow:0 8px 26px #00000094;font-size:clamp(4.5rem,13vw,8.5rem)}.exercise-coordinate 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strong{color:#fff}.blindfold-start-button{min-width:220px;padding:16px 28px;font-size:1.15rem}.exercise-blindfold-puzzles.blindfold-puzzle-exercise{max-width:1360px}.blindfold-exercise-title-row{justify-content:space-between;align-items:center;gap:16px;margin-bottom:16px;display:flex}.blindfold-exercise-title-row h1{margin-bottom:0}.blindfold-stats{margin-bottom:16px}.blindfold-exercise-layout{grid-template-columns:minmax(520px,1fr) minmax(340px,430px);align-items:start;gap:clamp(16px,2vw,24px);display:grid}.blindfold-board-focus{padding:clamp(10px,1.4vw,16px)}.blindfold-hidden-board{text-align:center;min-height:min(72vh,720px)}.blindfold-hidden-board strong{color:#fff;letter-spacing:-.04em;font-size:clamp(2rem,5vw,4rem)}.blindfold-hidden-board span{color:#aeb8c8;max-width:360px;font-size:clamp(1rem,2vw,1.25rem);font-weight:800}.blindfold-controls-card{gap:14px}.blindfold-status-block{background:#101827;border:1px solid #3a4659;border-radius:14px;gap:5px;padding:14px;display:grid}.blindfold-status-block strong{color:#fff;font-size:1.2rem}.blindfold-status-block span,.blindfold-speech-status{color:#aeb8c8;font-weight:800}.blindfold-move-form{grid-template-columns:minmax(0,1fr) auto auto}.blindfold-move-form button{min-height:48px}.blindfold-speech-status{margin:-4px 0 0}.blindfold-actions button{flex:150px}.blindfold-move-list{background:#101827;border:1px solid #3a4659;border-radius:14px;gap:8px;min-height:120px;max-height:220px;padding:12px;display:grid;overflow:auto}.blindfold-move-list div{background:#202b3db8;border-radius:10px;grid-template-columns:auto 1fr auto;align-items:center;gap:8px;padding:9px 10px;display:grid}.blindfold-move-list span,.blindfold-move-list small,.blindfold-move-list p{color:#94a3b8;margin:0;font-weight:800}.blindfold-move-list strong{color:#fff}@media (width<=980px){.blindfold-exercise-layout{grid-template-columns:1fr}.blindfold-hidden-board{min-height:auto}}@media (width<=640px){.blindfold-choice-grid,.blindfold-move-form{grid-template-columns:1fr}.blindfold-exercise-title-row{flex-direction:column;align-items:stretch}}.blindfold-board-focus{justify-self:center;width:100%;max-width:min(58vh,560px,100%)}.blindfold-input-panel{grid-template-columns:112px 1fr;margin-top:0}.blindfold-input-panel .move-entry-bar{min-height:104px}.blindfold-text-entry{align-items:center;gap:10px;width:100%;display:flex}.blindfold-text-entry input{color:#fff;background:0 0;border:0;flex:1;min-width:0;padding:10px 0}.blindfold-input-panel .voice-panel{box-shadow:none;padding:8px}.blindfold-input-panel .voice-orb{width:60px;height:60px}.blindfold-input-panel .dictation-transcript{min-height:46px;font-size:1rem}@media (width<=640px){.blindfold-input-panel,.blindfold-text-entry{grid-template-columns:1fr}.blindfold-text-entry{flex-direction:column;align-items:stretch}}.exercise-blindfold-puzzles.blindfold-puzzle-exercise{max-width:1280px;padding:clamp(16px,2.6vw,30px)}.blindfold-exercise-layout{grid-template-columns:minmax(560px,680px) minmax(320px,390px);justify-content:center}.blindfold-board-column{gap:12px;display:grid}.blindfold-board-focus{border-radius:18px;justify-self:center;width:100%;max-width:min(64vh,640px,100%);padding:8px;overflow:hidden}.blindfold-board-focus>div,.blindfold-board-focus svg,.blindfold-board-focus canvas{border-radius:14px}.blindfold-hidden-board{border-radius:14px;width:100%;min-height:auto}.blindfold-input-panel{width:100%;max-width:min(64vh,640px,100%);margin:0 auto}.blindfold-controls-card{grid-template-rows:auto minmax(240px,1fr) auto auto;align-self:stretch;display:grid}.blindfold-turn-heading{text-align:center;margin:0;font-size:clamp(1.35rem,2.4vw,2rem)}.blindfold-move-list-panel{height:auto;min-height:250px;padding:10px}.blindfold-move-list-panel .move-list li{grid-template-columns:34px minmax(0,1fr) minmax(0,1fr)}.move-list-empty{color:#94a3b8;font-weight:800}.blindfold-review-navigation{margin-top:0}.blindfold-review-navigation button{min-height:42px;padding:8px 10px}.blindfold-actions{grid-template-columns:1fr;display:grid}.blindfold-feedback-line{color:#dbe4f0;text-align:center;min-height:1.35em;margin:0;font-weight:900}@media (width<=980px){.blindfold-exercise-layout{grid-template-columns:1fr}.blindfold-board-focus,.blindfold-input-panel{max-width:min(72vh,680px,100%)}.blindfold-controls-card{grid-template-rows:auto}}.verbal-hidden-board{min-height:auto;padding:clamp(18px,3vw,28px)}