:root{font-family:Arial,sans-serif;color:#16362e;background:#f5f4ec;font-synthesis:none;line-height:1.55}*{box-sizing:border-box}body{margin:0}button,select,textarea{font:inherit}a{color:#205b49;text-underline-offset:4px}button{cursor:pointer;border:1px solid #bbc9c1;background:#fff;color:#183c31;border-radius:9px;padding:10px 15px;min-height:44px;font-weight:600}button:hover:not(:disabled){background:#e7eee6}button:disabled{opacity:.5;cursor:wait}button:focus-visible,a:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid #bd601a;outline-offset:3px}.top{background:#14263e;display:flex;justify-content:space-between;align-items:center;padding:20px max(4vw,16px);gap:20px}.brand{color:#fff;text-decoration:none;display:flex;align-items:center;gap:12px;font-size:30px}.brand span{font-size:14px;letter-spacing:.08em}.brand b{display:block;color:#b8d4ff}.top nav{display:flex;flex-wrap:wrap;gap:20px}.top nav a{font-size:14px;color:#e6eefb}main{max-width:1320px;margin:auto;padding:28px 4%}.title{display:flex;justify-content:space-between;align-items:center;gap:18px;margin-bottom:22px}.eyebrow{font-size:12px;font-weight:700;letter-spacing:.14em;margin:0 0 7px;color:#49685b}h1{font-family:Georgia,serif;font-size:clamp(30px,4vw,46px);line-height:1.12;letter-spacing:-.035em;margin:0}h2{font-size:21px;line-height:1.3;margin:0 0 12px}p{margin:10px 0 16px}.badge{font-size:12px;font-weight:600;border:1px solid #cbd6c9;border-radius:100px;padding:5px 10px;white-space:nowrap;background:#edf2e7}.layout{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(310px,.88fr);gap:30px;align-items:start}.play{min-width:0}.player{display:flex;align-items:center;gap:12px;padding:8px 3px 14px}.player img{width:35px;height:40px}.player span{display:block;font-size:14px;color:#4c645b}.player .small{margin-left:auto;font-size:14px}.bottom{padding:16px 3px}.board{display:grid;grid-template-columns:repeat(8,1fr);aspect-ratio:1;border:7px solid #264e3e;border-radius:5px;box-shadow:0 13px 35px #16362e19;touch-action:pan-y;position:relative}.square{border:0;border-radius:0;padding:0;min-height:0;position:relative;aspect-ratio:1;background:#f2ead2;display:flex;align-items:center;justify-content:center;touch-action:none}.square.dark{background:#578363}.square:hover:not(:disabled){background:#e1d6af}.square.dark:hover:not(:disabled){background:#4b7856}.square img{width:85%;height:85%;z-index:2;pointer-events:none;user-select:none;-webkit-user-drag:none}.square .coord{position:absolute;z-index:3;font-size:12px;font-weight:bold;line-height:1;color:#2b513b;pointer-events:none}.square.dark .coord{color:#fff8e6}.rank{top:3px;left:3px}.file{bottom:3px;right:3px}.square.last::before{content:'';position:absolute;inset:0;background:#f5d85260}.square.selected{box-shadow:inset 0 0 0 4px #f1c143}.square.legal::after{content:'';width:25%;height:25%;border-radius:50%;background:#173e3c77;position:absolute;z-index:4}.square.capture::after{width:88%;height:88%;background:transparent;border:5px solid #173e3c77}.square.hint{box-shadow:inset 0 0 0 4px #eaa744}.square.check{background:#c46e59}.board-tools{display:flex;gap:8px;flex-wrap:wrap}.board-tools button{font-size:14px;flex-grow:1}.instruction,.muted{color:#53665e;font-size:14px}.panel{background:#fffef9;border:1px solid #d8dfd4;border-radius:14px;padding:22px;margin-bottom:18px}.coach .panel{box-shadow:0 5px 15px #1a3e2905}.setup{border-top:4px solid #2c664e}label{display:block;font-weight:600;font-size:14px;margin:15px 0 6px}select,textarea{display:block;width:100%;border:1px solid #b8c8bb;background:#fff;color:#213f32;border-radius:8px;padding:11px}textarea{resize:vertical}button.primary{background:#285e49;color:#fff;border-color:#285e49}.primary:hover:not(:disabled){background:#1c4636}#start{width:100%;margin-top:4px}.section-head{display:flex;align-items:center;justify-content:space-between;gap:8px}.section-head h2{margin:0}.notes{background:#eef3e8}.notes p{white-space:pre-line}.notes a{display:inline-block;margin-top:14px;font-size:14px}.notes button{margin-top:8px}.chat-status{font-size:14px;color:#52635a;background:transparent;border-style:dashed}.chat-status h2{font-size:17px;color:#264735}summary{font-weight:600;cursor:pointer}details[open] summary{margin-bottom:15px}.moves{max-height:170px;overflow:auto;display:grid;grid-template-columns:40px 1fr 1fr;gap:3px;margin:14px 0;font-size:15px}.moves span{padding:4px 8px;border-radius:3px}.moves span:nth-child(3n+1){color:#65776d}.analysis li{overflow-wrap:anywhere;margin:10px 0;font-size:14px}footer{margin-top:32px;padding:22px 0;border-top:1px solid #d1dbd0;font-size:14px;color:#5b6d62}footer p{font-size:12px}dialog{border:1px solid #bccbbf;border-radius:16px;max-width:min(450px,90vw);padding:25px;color:#173e31}dialog::backdrop{background:#10251fc0}#review-content article{border-top:1px solid #d4ddd1;padding-top:10px}#review-content p{font-size:14px}.drag-ghost{position:fixed;width:64px;height:64px;pointer-events:none;z-index:99;transform:translate(-50%,-50%)}[hidden]{display:none!important}@media(max-width:800px){main{padding:23px 16px}.layout{grid-template-columns:1fr;gap:16px}.coach{display:contents}.play{order:1}.setup{order:0}.notes{order:2}.chat-status{order:4}#review-panel{order:3}.title{align-items:flex-start}.title>.badge{max-width:130px;white-space:normal;text-align:center}.top{padding:15px 16px}.top nav{gap:12px}.top nav a:not(:last-child){display:none}.board{border-width:5px}.panel{padding:18px}h1{font-size:32px}.square .coord{font-size:11px}}@media(prefers-reduced-motion:no-preference){button{transition:background .15s}}
.tutor{border-top:4px solid #285e49}.tutor .board-tools{margin-top:12px}#chat-log{max-height:330px;overflow-y:auto;scroll-behavior:smooth}.chat-message{padding:12px 14px;border-radius:10px;background:#eaf0e6;white-space:pre-wrap;overflow-wrap:anywhere}.chat-message.user{background:#e9edf4}.chat-message strong{display:block;font-size:14px;margin-bottom:4px}.chat-message span{font-size:16px}.tutor .muted{font-size:13px}#voice-stop:not(:disabled){border-color:#a84632;color:#8b3021}@media(max-width:800px){.tutor{order:2}.notes{order:3}}

.auto-coach{display:flex;align-items:center;gap:.5rem;margin:1rem 0}.auto-coach input{width:auto}.move-offer{padding:.7rem;border:1px solid #718473;border-radius:10px;margin:.6rem 0}.move-offer p{margin:0 0 .5rem}.move-offer button{margin-right:.5rem}

.training-choices{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:14px 0}.training-choices button{text-align:left;background:#edf3e8;font-size:14px}.coach{display:flex;flex-direction:column}.coach .tutor{order:-1}.tutor h2{font-size:25px}#chat-log{min-height:90px}@media(max-width:800px){.layout{display:flex;flex-direction:column}.coach{width:100%;order:-1}.play{width:100%}.coach .notes{display:none}}

/* Board stays visible in the desktop app, including a narrow sidebar window. */
.top{padding:8px 16px}.top .brand{font-size:24px}.top nav{gap:12px}.top nav a{font-size:12px}
main{max-width:1600px;padding:10px 16px}.title{margin-bottom:8px}.title h1{font-size:26px}.title .eyebrow{display:none}
.layout{display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,.48fr);gap:16px;align-items:start}
.play{width:auto;order:0}.board{width:min(100%,calc(100dvh - 185px));margin:auto}.player{padding:3px 0 6px}.player img{width:24px;height:28px}.bottom{padding:5px 0}.player span{font-size:12px}.player .small{padding:4px 10px;min-height:32px}
.play>.board-tools{gap:4px}.play>.board-tools button{font-size:12px;min-height:30px;padding:4px 8px}.instruction{font-size:12px;margin:5px 0}.play>details{margin-top:8px;padding:10px}
.coach{width:auto;order:0;max-height:calc(100dvh - 100px);overflow-y:auto}.coach .tutor{order:0;padding:14px;margin:0}.tutor h2{font-size:20px}.tutor .section-head .badge{font-size:10px}.tutor p{margin:6px 0}.tutor .muted{font-size:11px}.training-choices{margin:8px 0;gap:5px}.training-choices button{padding:6px 8px;min-height:34px;font-size:12px}.auto-coach{font-size:12px;margin:6px 0}#chat-log{max-height:25dvh;min-height:48px}.chat-message{padding:8px}.chat-message span{font-size:14px}.tutor textarea{padding:8px}.tutor .board-tools button{padding:6px;font-size:12px}.coach .notes{display:none}
@media(max-width:600px){.top nav{display:none}.layout{display:flex;flex-direction:column;gap:8px}.play{width:100%;order:0}.board{width:min(100%,calc(55dvh - 70px))}.coach{width:100%;order:1;max-height:36dvh}.title h1{font-size:20px}.title .badge{display:none}.play>details,.play>.instruction{display:none}.training-choices{grid-template-columns:repeat(3,1fr)}.training-choices button{font-size:11px}.tutor .section-head,.tutor .auto-coach,#board-connection{display:none}#chat-log{max-height:12dvh}.tutor .muted{display:none}main{padding:6px 10px}.top{padding:5px 10px}.tutor textarea{min-height:38px;max-height:50px}.tutor label{margin:3px 0}}

.lesson-library{margin:8px 0;font-size:13px}.lesson-library summary{cursor:pointer;font-weight:700}.lesson-library select{width:100%;padding:7px;margin:5px 0}#lesson-guide,#move-learning{background:#edf3e8;border-left:3px solid #517849;padding:8px;font-size:13px;line-height:1.4;margin:8px 0}#lesson-guide p{font-size:13px}.lesson-library .board-tools{flex-wrap:wrap}
/* Coaching workspace: warm surfaces and a focused board. */
:root{color:#203d35;background:#f3f1e9;font-family:Inter,"Segoe UI",Arial,sans-serif}body{background:#f3f1e9}.top{background:#173c32;padding:12px 24px;border-bottom:1px solid #34574b}.brand b{color:#d6c79d}.top nav a{font-size:14px;color:#e5ece5;text-decoration:none}.top nav a:hover{color:#e8ce87}main{max-width:1440px;padding:18px 24px}.title{margin-bottom:16px}.title h1{font-size:32px;font-weight:500}.title .badge{background:transparent;border-color:#c6cdbf;color:#526554;font-size:12px}.layout{grid-template-columns:minmax(0,1fr) minmax(340px,.58fr);gap:26px}.play{background:#e8e9df;border:1px solid #d7ddce;border-radius:20px;padding:12px 16px}.board{width:min(100%,calc(100dvh - 275px));border:7px solid #234c3d;border-radius:6px;box-shadow:0 10px 24px #173c3226}.square{background:#eee6d1}.square.dark{background:#78927a}.square:hover:not(:disabled){background:#e1d8bc}.square.dark:hover:not(:disabled){background:#638668}.square img{filter:drop-shadow(0 2px 1px #122b3028)}.player{padding:0 2px 9px;gap:10px}.player img{width:32px;height:36px;background:#d6decf;border-radius:9px;padding:3px}.player strong{font-size:14px}.player span{font-size:12px}.player.bottom{padding:10px 2px}.bottom img{background:#f7f5ed}.player .small{font-size:12px;min-height:34px}.play>.board-tools{gap:6px}.play>.board-tools button{font-size:12px;min-height:34px;background:#f9faf5;border-color:#cbd4c5}.play>details{background:transparent;border:0;border-top:1px solid #cad3c4;border-radius:0;padding:12px 0;margin:0;font-size:13px}.instruction{margin:8px 0;color:#586950}.coach{max-height:none;overflow:visible;min-width:0}.coach .tutor{padding:20px;background:#fffefa;border:1px solid #d8ddd1;border-radius:20px;box-shadow:0 8px 25px #203d3508}.tutor h2{font-size:20px;letter-spacing:-.025em}.tutor .section-head .badge{font-size:12px;background:#f5f0e0;color:#786130;border-color:#e6ddbe}.tutor #tutor-status{font-size:14px;color:#36694f;margin:10px 0 4px}.tutor .muted{font-size:12px;line-height:1.6;color:#617063}#board-connection{padding-bottom:8px;border-bottom:1px solid #e8eae1}.auto-coach{font-size:13px;margin:12px 0;gap:8px}.auto-coach input{accent-color:#286349;width:16px;height:16px}.training-menu,.lesson-library{border:1px solid #dce1d5;border-radius:10px;background:#f8f9f3;padding:10px 12px;margin:8px 0;font-size:14px}.training-menu summary span{display:block;font-size:12px;color:#6a7765;margin:3px 0 0 17px;font-weight:400}.training-choices{gap:7px}.training-choices button{background:white;font-size:13px;min-height:44px;border-color:#d8dfce}.lesson-library select{font-size:14px}.tutor #chat-log{max-height:clamp(160px,30dvh,360px);min-height:130px;margin:16px 0 12px;padding-right:3px;scrollbar-width:thin}.chat-message{background:#edf2e7;border:1px solid #e2e8db;padding:14px 16px;border-radius:3px 15px 15px 15px;margin-bottom:10px;line-height:1.65}.chat-message.user{background:#f2eee4;border-color:#e8e0d0;border-radius:15px 3px 15px 15px}.chat-message strong{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:#4d6c50}.chat-message span{font-size:15px}.tutor label{font-size:14px}.tutor textarea{background:#fafbf6;border-color:#c7d1be;min-height:78px;font-size:15px;padding:12px;line-height:1.5;border-radius:12px}.tutor .board-tools{gap:7px;margin-top:9px}.tutor .board-tools button{font-size:13px;padding:9px;min-height:40px}.primary,button.primary{background:#286349;border-color:#286349}button{border-color:#cdd7c6}button:hover:not(:disabled){background:#e9f0e3}button.primary:hover:not(:disabled){background:#174832}button:focus-visible,a:focus-visible,select:focus-visible,textarea:focus-visible,summary:focus-visible{outline:3px solid #b79443;outline-offset:3px}.session-info{font-size:12px;color:#65735f;margin-top:16px}.session-info summary{font-weight:400}.tutor #mic-status{margin-top:12px}#lesson-guide,#move-learning{border-left-color:#b59a55;background:#f6f0df;border-radius:0 9px 9px 0;padding:12px;font-size:14px}#lesson-guide p{font-size:14px}footer{font-size:12px;color:#61705e;margin-top:24px}footer a{color:#42634c}.notes{display:none}
@media(min-width:1100px){.tutor{position:sticky;top:16px}}
@media(max-width:850px){main{padding:12px}.layout{grid-template-columns:minmax(0,1fr) minmax(285px,.7fr);gap:12px}.play{padding:10px}.coach .tutor{padding:14px}.title h1{font-size:27px}.top{padding:10px 16px}.top nav a:not(:last-child){display:none}.board{width:100%}}
@media(max-width:650px){.top nav{display:flex}.top .brand span{font-size:11px}.top .brand{gap:7px}.top nav a{font-size:12px}.title{margin:4px 0 12px}.title h1{font-size:25px}.layout{display:flex;flex-direction:column;gap:14px}.play,.coach{width:100%;order:0}.board{width:min(100%,calc(100dvh - 265px))}.play{padding:10px 12px;border-radius:14px}.player img{width:27px;height:30px}.player span{font-size:12px}.play>.board-tools button{min-height:36px}.play>details{display:block}.play>.instruction{display:block;font-size:12px}.coach{max-height:none}.tutor .section-head,.tutor .auto-coach,#board-connection{display:flex}.tutor .muted{display:block}.tutor #chat-log{max-height:280px;min-height:110px}.training-choices{grid-template-columns:1fr 1fr}.tutor textarea{min-height:78px;max-height:180px}.coach .tutor{padding:18px;border-radius:14px}.title .badge{display:none}}
@media(min-width:651px){.top{padding:8px 24px}main{padding-top:12px}.title{margin-bottom:12px}.title h1{font-size:29px}.board{width:min(100%,calc(100dvh - 230px))}.coach .tutor{padding:16px}.tutor #chat-log{max-height:clamp(105px,19dvh,260px);min-height:100px;margin:12px 0 8px}.tutor textarea{min-height:62px}.tutor label{margin-top:8px}.training-menu summary span{display:none}.training-menu,.lesson-library{padding:8px 11px}.tutor #board-connection{padding-bottom:5px}.tutor .auto-coach{margin:8px 0}.session-info{margin-top:10px}}


.session-celebration{position:fixed;z-index:10000;top:50%;left:50%;transform:translate(-50%,-50%);box-sizing:border-box;width:min(90vw,460px);padding:28px 20px;text-align:center;border:3px solid #f7cf59;border-radius:24px;background:linear-gradient(145deg,#102f67,#174c91);color:#fff;box-shadow:0 12px 65px #001a4699;animation:celebration-in .25s ease-out}.session-celebration strong{display:block;font-size:clamp(27px,7vw,38px);line-height:1.2;color:#ffe38a}.session-celebration p{font-size:18px;line-height:1.4;margin:14px 0}.celebration-trophy{display:block;font-size:56px;margin-bottom:10px}.session-celebration button{background:#ffdf80;color:#14315c;border:0;border-radius:12px;padding:10px 24px;font-weight:700;cursor:pointer}@keyframes celebration-in{from{opacity:0;transform:translate(-50%,-45%)}to{opacity:1;transform:translate(-50%,-50%)}}@media(prefers-reduced-motion:reduce){.session-celebration{animation:none}}

.coaching-choice{width:min(560px,94vw);max-height:90dvh;overflow:auto}.coaching-choice fieldset{border:0;padding:0;margin:0 0 1rem}.coaching-choice legend{font-weight:700;margin-bottom:.5rem}.coaching-choice label{display:flex;gap:.8rem;align-items:flex-start;border:1px solid #9ab7d6;border-radius:12px;padding:12px;margin:8px 0;cursor:pointer}.coaching-choice label:has(input:checked){background:#e2efff;border-color:#1857ce}.coaching-choice label span span{display:block;font-size:.9rem;margin-top:4px}.coaching-choice input{margin-top:5px;flex-shrink:0}.coaching-choice button{margin:4px}body:has(#coaching-level) #coaching-level{margin:8px 0}