:root{font-family:Inter,ui-rounded,SF Pro Rounded,Segoe UI,system-ui,-apple-system,BlinkMacSystemFont,sans-serif;color:#1f2a22;background:#f5f0e5;font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;--ink: #1f2a22;--muted: #607064;--paper: #fffaf0;--panel: #fff7df;--line: #d8c8a6;--green: #6f9f5f;--green-dark: #426b43;--mint: #9ed8be;--coral: #f17358;--gold: #f3bd43;--sky: #6aa6c8;--aubergine: #5d3f63;--shadow: 0 18px 50px rgba(45, 55, 42, .18)}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh;background:radial-gradient(circle at 12% 16%,rgba(243,189,67,.18),transparent 22rem),linear-gradient(135deg,#faf3df,#f1e7cf 42%,#dcebd9)}button,input{font:inherit}button{color:inherit}.app-shell{display:grid;grid-template-columns:minmax(340px,1fr) minmax(320px,440px);gap:clamp(18px,3vw,34px);min-height:100vh;padding:clamp(16px,3vw,32px);align-items:center}.board-zone{width:min(100%,780px);justify-self:center}.mode-bar{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;padding:8px;margin:0 auto 14px;width:min(100%,720px);background:#fffaf0d1;border:1px solid rgba(216,200,166,.88);border-radius:8px;box-shadow:0 8px 26px #2d372a1a}.mode-bar button{min-height:44px;border:0;border-radius:6px;background:transparent;color:var(--muted);display:inline-flex;align-items:center;justify-content:center;gap:8px;font-weight:800;cursor:pointer}.mode-bar button svg,.icon-button svg,.status-icon svg,.rules-strip svg,.star-meter svg,.coach-avatar svg,.panel-heading>svg{width:20px;height:20px;stroke-width:2.4}.mode-bar button.active{background:var(--ink);color:#fffaf0}.mode-bar button:disabled,.piece-card:disabled,.side-picker button:disabled{cursor:default;opacity:1}.board-wrap{display:grid;place-items:center}.board-frame{position:relative;width:min(100%,70vh,720px);aspect-ratio:1;padding:clamp(8px,1.6vw,16px);background:#392d22;border-radius:8px;box-shadow:var(--shadow)}.board{position:relative;width:100%;height:100%;display:grid;grid-template-columns:repeat(8,1fr);grid-template-rows:repeat(8,1fr);overflow:hidden;border-radius:4px;border:2px solid rgba(31,42,34,.35);isolation:isolate}.square{position:relative;display:grid;place-items:center;border:0;padding:0;cursor:pointer;overflow:hidden;min-width:0;min-height:0}.square.light{background:#efd9ac}.square.dark{background:#6f9f5f}.square:hover{filter:brightness(1.05)}.square.selected{outline:4px solid var(--coral);outline-offset:-5px;z-index:2}.square.lesson-focus:after{content:"";position:absolute;top:8%;right:8%;bottom:8%;left:8%;border:4px solid rgba(243,189,67,.9);border-radius:8px;pointer-events:none}.square.last-move{box-shadow:inset 0 0 0 100vmax #6aa6c833}.square.success-square:before{content:"";position:absolute;top:7%;right:7%;bottom:7%;left:7%;z-index:0;border:5px solid rgba(243,189,67,.9);border-radius:10px;background:#fffaf029;box-shadow:inset 0 0 0 999px #f3bd431a,0 0 26px #f3bd438f;pointer-events:none;animation:landingGlow 1.4s ease-out both}.path-square{box-shadow:inset 0 0 0 100vmax #f3bd4329}.path-step{position:absolute;z-index:1;width:28%;height:28%;border-radius:50%;background:#fffaf0a3;border:4px solid rgba(243,189,67,.95);box-shadow:0 7px 14px #34261526;pointer-events:none}.target-star{position:absolute;z-index:2;width:42%;height:42%;aspect-ratio:1;border-radius:50%;display:grid;place-items:center;background:var(--gold);color:#342615;font-size:clamp(18px,4vw,34px);font-weight:950;line-height:1;box-shadow:0 0 0 6px #fffaf047,0 10px 18px #3426153d;animation:targetBounce 1s ease-in-out infinite}.target:has(.piece) .target-star{width:78%;height:78%;background:transparent;border:6px solid rgba(241,115,88,.9);color:var(--coral)}.done-square{box-shadow:inset 0 0 0 100vmax #426b4324}.done-target{background:var(--green-dark);color:#fffaf0;animation:none;box-shadow:0 0 0 5px #fffaf04d,0 8px 14px #1f2a2233}.target:has(.piece) .done-target{background:var(--green-dark);border-color:#fffaf0;color:#fffaf0}.piece{position:relative;z-index:1;display:grid;place-items:center;width:82%;height:82%;max-width:82%;max-height:82%;overflow:visible;line-height:1;pointer-events:none;-webkit-user-select:none;user-select:none}.piece-glyph-mark{display:block;font-family:Arial Unicode MS,Apple Symbols,Segoe UI Symbol,"Noto Sans Symbols 2",DejaVu Sans,serif;font-size:clamp(28px,7vmin,74px);font-weight:400;line-height:.82;transform:translateY(.02em)}.moving-piece{position:absolute;left:var(--to-left);top:var(--to-top);z-index:7;width:12.5%;height:12.5%;display:grid;place-items:center;pointer-events:none;will-change:transform;animation:pieceSlide var(--move-duration) cubic-bezier(.16,1,.3,1) both}.moving-piece.jump-move{animation-name:pieceJump;animation-timing-function:cubic-bezier(.22,.92,.2,1)}.white-piece{color:#fffaf0;text-shadow:0 2px 0 #4b4032,0 3px 7px rgba(31,42,34,.55)}.black-piece{color:#26211d;text-shadow:0 2px 7px rgba(255,250,240,.24)}.coord{position:absolute;z-index:3;font-size:clamp(9px,1.4vw,13px);font-weight:900;color:#1f2a2294;pointer-events:none}.coord.file{right:7px;bottom:4px}.coord.rank{left:6px;top:4px}.dark .coord{color:#fffaf0ad}.tool-row{width:min(100%,620px);margin:8px auto 0;display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap}.feedback-lane{width:min(100%,620px);min-height:54px;margin:10px auto 0;display:grid;place-items:center;pointer-events:none}.move-feedback{min-height:44px;padding:8px 16px;border:2px solid rgba(216,200,166,.92);border-radius:8px;display:inline-flex;align-items:center;justify-content:center;gap:10px;background:#fffaf0f0;color:#2b261c;box-shadow:0 8px 20px #2d372a1f;animation:feedbackPop 1.55s ease both}.move-feedback svg{width:22px;height:22px;color:var(--gold);stroke-width:2.7}.move-feedback strong{font-size:1rem;line-height:1;font-weight:950}.move-feedback span{color:var(--gold);font-size:1.15rem;font-weight:950;line-height:1}.move-feedback.win-feedback{border-color:#f3bd43f2;background:#fff4d4;box-shadow:0 0 0 6px #f3bd4329,0 14px 28px #2d372a29;animation:winFeedbackPop 2.8s ease both}.win-burst{position:absolute;top:0;right:0;bottom:0;left:0;z-index:8;pointer-events:none;overflow:hidden}.win-burst span{position:absolute;left:50%;top:50%;width:clamp(10px,2.2vw,18px);height:clamp(10px,2.2vw,18px);border-radius:50%;background:var(--gold);box-shadow:0 0 0 5px #fffaf06b;animation:winSpark 2.45s ease-out both}.win-burst span:nth-child(3n){background:var(--coral)}.win-burst span:nth-child(4n){background:#6aa6c8}.win-burst span:nth-child(1){--x: -290px;--y: -250px;animation-delay:0ms}.win-burst span:nth-child(2){--x: -170px;--y: -285px;animation-delay:50ms}.win-burst span:nth-child(3){--x: -35px;--y: -270px;animation-delay:90ms}.win-burst span:nth-child(4){--x: 120px;--y: -285px;animation-delay:.13s}.win-burst span:nth-child(5){--x: 270px;--y: -220px;animation-delay:.17s}.win-burst span:nth-child(6){--x: -300px;--y: -65px;animation-delay:.12s}.win-burst span:nth-child(7){--x: 305px;--y: -45px;animation-delay:70ms}.win-burst span:nth-child(8){--x: -280px;--y: 90px;animation-delay:.19s}.win-burst span:nth-child(9){--x: 275px;--y: 115px;animation-delay:.11s}.win-burst span:nth-child(10){--x: -210px;--y: 250px;animation-delay:.15s}.win-burst span:nth-child(11){--x: -70px;--y: 285px;animation-delay:40ms}.win-burst span:nth-child(12){--x: 80px;--y: 275px;animation-delay:.21s}.win-burst span:nth-child(13){--x: 220px;--y: 230px;animation-delay:.1s}.win-burst span:nth-child(14){--x: 0px;--y: -345px;animation-delay:.23s}.icon-button{width:46px;height:46px;display:grid;place-items:center;border:1px solid rgba(216,200,166,.92);border-radius:8px;background:#fffaf0db;cursor:pointer}.icon-button.active-tool{background:var(--green-dark);color:#fffaf0}.toggle{min-height:46px;display:inline-flex;align-items:center;gap:10px;padding:0 14px;border:1px solid rgba(216,200,166,.92);border-radius:8px;background:#fffaf0db;font-weight:800;color:var(--muted)}.toggle input{width:20px;height:20px;accent-color:var(--green-dark)}.confirm-layer{position:fixed;top:0;right:0;bottom:0;left:0;z-index:30;display:grid;place-items:center;padding:18px;background:#1f2a2275}.confirm-dialog{width:min(100%,390px);padding:22px;border:1px solid rgba(216,200,166,.95);border-radius:8px;display:grid;gap:14px;justify-items:center;text-align:center;background:#fffaf0;box-shadow:0 24px 80px #1f2a2247}.confirm-badge{width:58px;height:58px;border-radius:8px;display:grid;place-items:center;background:var(--gold);color:#342615}.confirm-badge svg{width:30px;height:30px;stroke-width:2.6}.confirm-dialog h2{margin:0;color:var(--ink);font-size:1.45rem}.confirm-dialog p{margin:0;color:var(--muted);font-weight:800;line-height:1.35}.confirm-actions{width:100%;display:grid;grid-template-columns:1fr 1fr;gap:12px}.confirm-actions button{min-height:94px;border-radius:8px;border:2px solid rgba(216,200,166,.92);display:grid;place-items:center;gap:4px;font-weight:950;cursor:pointer}.confirm-actions button svg{width:clamp(42px,13vw,58px);height:clamp(42px,13vw,58px);stroke-width:3.2}.confirm-actions button span{font-size:1.02rem}.confirm-stay{background:#fff1df;border-color:#f0b463;color:#8a411d}.confirm-go{background:#d9ecdf;border-color:#3f764b8c;color:var(--green-dark)}.coach-panel{width:min(100%,440px);justify-self:center;display:grid;gap:14px}.score-card,.coach-message,.kid-mission,.parent-notes,.lesson-list,.rules-strip{background:#fffaf0e6;border:1px solid rgba(216,200,166,.92);border-radius:8px;box-shadow:0 12px 34px #2d372a1a}.kid-mission{display:grid;grid-template-columns:96px 1fr;gap:14px;align-items:center;padding:16px}.mission-piece{width:96px;height:96px;display:grid;place-items:center;border-radius:8px;background:linear-gradient(145deg,#fff4d4,#d9ecdf);border:1px solid rgba(216,200,166,.92);color:var(--ink);font-family:Arial Unicode MS,DejaVu Sans,serif;font-size:4rem;line-height:1;text-shadow:0 2px 0 rgba(255,250,240,.8)}.mission-stack{min-width:0;display:grid;gap:10px}.pattern-row{display:flex;gap:8px;align-items:center}.pattern-row span{min-width:44px;height:44px;padding:0 10px;display:grid;place-items:center;border-radius:8px;background:#fff4d4;border:1px solid rgba(216,200,166,.92);color:var(--green-dark);font-size:1.45rem;font-weight:950}.collector-progress{display:flex;flex-wrap:wrap;gap:6px;align-items:center}.collector-progress span{width:25px;height:25px;display:grid;place-items:center;border-radius:50%;background:var(--gold);color:#342615;font-size:.9rem;font-weight:950;box-shadow:inset 0 -2px #34261521}.collector-progress span.collected{background:var(--green-dark);color:#fffaf0}.kid-mission strong{font-size:1.12rem;line-height:1.1}.score-card{display:flex;justify-content:space-between;align-items:center;gap:18px;padding:20px}.eyebrow{margin:0 0 4px;color:var(--coral);text-transform:uppercase;letter-spacing:0;font-size:.76rem;font-weight:900}h1,h2,p{margin-top:0}h1{margin-bottom:0;font-size:clamp(2rem,5vw,3.6rem);line-height:.94;letter-spacing:0}h2{margin-bottom:0;font-size:1.2rem;letter-spacing:0}.star-meter{min-width:74px;height:56px;border-radius:8px;display:inline-flex;align-items:center;justify-content:center;gap:8px;color:#2b261c;background:var(--gold);font-weight:950;font-size:1.3rem}.coach-message{display:grid;grid-template-columns:54px 1fr;gap:14px;align-items:center;padding:16px}.coach-avatar{width:54px;height:54px;border-radius:8px;background:var(--aubergine);color:#fffaf0;display:grid;place-items:center}.coach-message p{margin-bottom:0;color:#2f3d32;font-size:1.05rem;line-height:1.35;font-weight:750}.status-grid{display:grid;grid-template-columns:1fr;gap:10px}.parent-notes{padding:0;overflow:hidden}.parent-notes summary{min-height:54px;padding:0 16px;display:flex;align-items:center;color:var(--muted);font-weight:900;cursor:pointer}.parent-notes .status-grid{padding:0 14px 14px}.status-tile{min-height:84px;display:grid;grid-template-columns:46px 1fr;gap:12px;align-items:center;padding:14px;background:#fff7dfe6;border:1px solid rgba(216,200,166,.86);border-radius:8px}.status-icon{width:46px;height:46px;display:grid;place-items:center;border-radius:8px;background:#d9ecdf;color:var(--green-dark)}.status-tile p{margin-bottom:2px;color:var(--muted);font-size:.76rem;font-weight:900;text-transform:uppercase;letter-spacing:0}.status-tile strong{display:block;font-size:.98rem;line-height:1.28}.lesson-list{padding:16px}.panel-heading{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:12px}.panel-heading>svg{color:var(--coral)}.piece-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.piece-card{min-height:88px;border:1px solid rgba(216,200,166,.92);border-radius:8px;background:#fff4d4;display:grid;place-items:center;padding:10px 6px;cursor:pointer}.piece-card span{display:block;font-family:Arial Unicode MS,DejaVu Sans,serif;font-size:2.1rem;line-height:1}.piece-card strong{font-size:.86rem}.piece-card small{min-width:38px;min-height:24px;padding:3px 7px;display:inline-grid;place-items:center;border-radius:999px;background:#fffaf0cc;color:var(--muted);font-size:.72rem;font-weight:950}.piece-card.active{background:var(--green-dark);color:#fffaf0}.piece-card.active small,.piece-card.complete small{background:var(--gold);color:#342615}.piece-card.complete:not(.active){border-color:#426b4380;background:#d9ecdf}.game-controls{display:grid;gap:12px}.side-picker,.game-actions{display:grid;grid-template-columns:repeat(2,1fr);gap:8px}.game-actions{grid-template-columns:1fr}.coach-level-picker{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}.side-picker button,.coach-level-picker button,.game-actions button{min-height:52px;border:1px solid rgba(216,200,166,.92);border-radius:8px;display:inline-flex;align-items:center;justify-content:center;gap:8px;background:#fff4d4;color:var(--ink);font-weight:950;cursor:pointer}.coach-level-picker button{min-height:74px;flex-direction:column;gap:5px;background:#fffaf0}.coach-level-picker button svg{width:25px;height:25px;stroke-width:2.8}.coach-level-picker button span{max-width:100%;overflow-wrap:anywhere;font-size:.88rem;line-height:1.05}.side-picker button.active{background:var(--green-dark);color:#fffaf0}.coach-level-picker button.active{background:var(--gold);border-color:#d49a2c;color:#342615}.side-picker span{font-family:Arial Unicode MS,DejaVu Sans,serif;font-size:1.75rem;line-height:1}.game-actions button{background:var(--ink);color:#fffaf0}.game-actions button svg{width:19px;height:19px;stroke-width:2.6}.rules-strip{min-height:56px;padding:12px 14px;display:flex;align-items:center;gap:10px;color:var(--muted);font-weight:800}.rules-strip svg{flex:0 0 auto;color:var(--sky)}@media(max-width:920px){.app-shell{grid-template-columns:1fr;align-items:start}.coach-panel{width:min(100%,720px)}.status-grid,.parent-notes .status-grid{grid-template-columns:repeat(3,1fr)}.board-frame{width:min(100%,68vh,680px)}}@media(max-width:680px){.app-shell{padding:10px;gap:14px}.mode-bar{margin-bottom:10px}.mode-bar button{min-height:42px;font-size:.82rem;gap:5px}.mode-bar button svg{width:18px;height:18px}.board-frame{width:min(100%,calc(100vw - 20px));padding:7px}.score-card{padding:16px}.kid-mission{grid-template-columns:78px 1fr}.mission-piece{width:78px;height:78px;font-size:3.2rem}.pattern-row span{min-width:38px;height:38px;font-size:1.2rem}.coach-message{grid-template-columns:46px 1fr}.coach-avatar{width:46px;height:46px}.status-grid,.parent-notes .status-grid{grid-template-columns:1fr}.piece-grid{grid-template-columns:repeat(2,1fr)}h1{font-size:2rem}}@keyframes targetBounce{0%,to{transform:scale(1)}50%{transform:scale(1.15)}}@keyframes pieceSlide{0%{transform:translate(var(--from-offset-x),var(--from-offset-y)) scale(1.08)}72%{transform:translate(0) scale(1.08)}to{transform:translate(0) scale(1)}}@keyframes pieceJump{0%{transform:translate(var(--from-offset-x),var(--from-offset-y)) scale(1.05)}52%{transform:translate(var(--mid-offset-x),var(--mid-offset-y)) scale(1.18)}to{transform:translate(0) scale(1)}}@keyframes landingGlow{0%{opacity:0;transform:scale(.72)}18%{opacity:1;transform:scale(1)}72%{opacity:.85;transform:scale(1.06)}to{opacity:0;transform:scale(1.22)}}@keyframes feedbackPop{0%{opacity:0;transform:translateY(-4px) scale(.92)}18%{opacity:1;transform:translateY(0) scale(1)}82%{opacity:1;transform:translateY(0) scale(1)}to{opacity:0;transform:translateY(4px) scale(.98)}}@keyframes winFeedbackPop{0%{opacity:0;transform:translateY(-4px) scale(.9)}14%{opacity:1;transform:translateY(0) scale(1.08)}32%,80%{opacity:1;transform:translateY(0) scale(1)}to{opacity:0;transform:translateY(4px) scale(.98)}}@keyframes winSpark{0%{opacity:0;transform:translate(-50%,-50%) scale(.4)}16%{opacity:1}74%{opacity:1;transform:translate(calc(-50% + var(--x) * .72),calc(-50% + var(--y) * .72)) scale(1)}to{opacity:0;transform:translate(calc(-50% + var(--x)),calc(-50% + var(--y))) scale(.85)}}