:root{color-scheme:light;--ink:#18384c;--muted:#728796;--blue:#23688c;--blue2:#174e6d;--mint:#4eaa8a;--mint-soft:#e7f5ef;--pink:#d55291;--gold:#efa94f;--line:#e2ebef;--paper:#fff;--wash:#f4f8fa;--shadow:0 14px 34px rgba(38,76,94,.09)}
*{box-sizing:border-box}
html,body{width:100%;height:100%;min-width:320px;margin:0;overflow:hidden}
body{font-family:ui-rounded,"Nunito",system-ui,-apple-system,"Segoe UI",sans-serif;color:var(--ink);background:radial-gradient(ellipse at 50% -15%,#fff 0,#f2f8fb 56%,#fff9f2 100%);-webkit-tap-highlight-color:transparent}
button,a{font:inherit}button{color:inherit}button:focus-visible,a:focus-visible,[tabindex="0"]:focus-visible{outline:3px solid #5aabc5;outline-offset:3px}
[hidden]{display:none!important}
.puzzle-app{height:100%;min-height:0;display:flex;flex-direction:column;padding:clamp(10px,1.6vw,19px) clamp(12px,2vw,26px);gap:clamp(10px,1.5vh,16px);max-width:1500px;margin:0 auto}
.topbar{height:43px;flex:0 0 auto;display:grid;grid-template-columns:1fr auto 1fr;align-items:center;gap:10px}.back-link{display:inline-flex;align-items:center;gap:8px;width:max-content;color:#65808f;font-size:13px;font-weight:800}.back-link>span:first-child{display:grid;place-items:center;width:32px;height:32px;border:1px solid var(--line);border-radius:11px;background:white;font-size:18px;box-shadow:0 3px 9px #23495c0c}.brand{display:flex;align-items:center;gap:8px;color:#34576a;font-weight:900;font-size:13px;letter-spacing:-.03em}.brand b{margin-left:4px;color:var(--pink);font-size:10px;letter-spacing:.12em}.brand-icon{width:28px;height:28px;border-radius:10px;display:grid;place-items:center;color:#318b73;background:#e5f5ed;font-size:17px}.top-action{justify-self:end;border:1px solid var(--line);background:#fff;border-radius:11px;padding:8px 12px;color:#517283;font-size:12px;font-weight:900;cursor:pointer}.top-action span{font-size:16px;margin-right:4px}.top-spacer{justify-self:end}
.setup-screen,.game-screen{flex:1;min-height:0;overflow:auto;overscroll-behavior:contain;scrollbar-width:thin;scrollbar-color:#d5e3e9 transparent}.setup-card{width:min(1080px,100%);margin:0 auto 14px;padding:clamp(18px,2.6vw,32px);border:1px solid #e6eef1;border-radius:26px;background:rgba(255,255,255,.92);box-shadow:var(--shadow)}.welcome-copy{text-align:center;margin:0 auto 24px}.eyebrow{display:inline-block;color:var(--pink);font-size:9px;line-height:1.4;font-weight:950;letter-spacing:.17em}.welcome-copy h1{margin:5px 0 5px;font-size:clamp(25px,4vw,38px);line-height:1.05;letter-spacing:-.055em;color:var(--blue2);font-weight:950}.welcome-copy h1 em{font-style:normal;color:#36a082}.welcome-copy p{margin:0;color:var(--muted);font-size:13px;line-height:1.5}.setup-columns{display:grid;grid-template-columns:minmax(0,1.45fr) minmax(260px,.85fr);gap:clamp(18px,3vw,36px);align-items:start}.section-title{display:flex;align-items:center;gap:10px;margin-bottom:12px}.step-number{flex:0 0 auto;display:grid;place-items:center;width:29px;height:29px;border-radius:10px;background:#e9f6f0;color:#37977b;font-weight:950;font-size:14px}.section-title h2{font-size:15px;margin:0;color:var(--ink);font-weight:950;letter-spacing:-.02em}.section-title small{display:block;margin-top:2px;font-size:10px;color:var(--muted);font-weight:700}
.category-grid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:9px}.category-card{position:relative;min-width:0;overflow:hidden;text-align:left;padding:0;border:2px solid transparent;border-radius:16px;background:#f2f6f7;cursor:pointer;transition:transform .17s,border-color .17s,box-shadow .17s}.category-card:hover{transform:translateY(-2px);box-shadow:0 8px 18px #224b5d1c}.category-card.selected{border-color:#45a586;box-shadow:0 0 0 3px #62b69525}.category-card img{display:block;width:100%;aspect-ratio:1.38;object-fit:cover}.category-caption{display:flex;flex-direction:column;padding:8px 9px 9px;gap:2px}.category-caption strong{font-size:11px;font-weight:950;color:#355466}.category-caption small{font-size:9px;color:#82949d;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.selected-check{display:none;position:absolute;right:7px;top:7px;width:21px;height:21px;place-items:center;border-radius:50%;background:#3c9a7c;color:white;font-size:12px;font-weight:950;box-shadow:0 3px 8px #1c4c4066}.category-card.selected .selected-check{display:grid}
.difficulty-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:7px}.difficulty{position:relative;display:flex;flex-direction:column;align-items:flex-start;justify-content:center;min-height:63px;padding:8px 10px;border:1px solid var(--line);border-radius:13px;background:#fff;cursor:pointer;text-align:left;transition:.16s}.difficulty:hover{border-color:#a9d4c4}.difficulty.selected{border-color:#45a586;background:#edf8f2;box-shadow:inset 0 0 0 1px #45a586}.difficulty strong{font-size:17px;line-height:1;color:#31576b;font-weight:950}.difficulty span{margin-top:3px;font-size:9px;font-weight:800;color:#77909b}.difficulty small{position:absolute;right:7px;bottom:8px;color:#9aaab0;font-size:8px;font-weight:800}.difficulty[data-count="6"] small,.difficulty[data-count="12"] small{color:#399376}.selected-image{display:flex;align-items:center;gap:11px;margin:13px 0 10px;padding:8px;border:1px solid #edf1f2;border-radius:14px;background:#fbfcfc}.selected-image img{width:54px;height:54px;border-radius:10px;object-fit:cover;background:#e8f1f2}.selected-image>div{min-width:0;display:flex;flex-direction:column;gap:2px}.selected-image small{font-size:8px;color:#91a2a8;font-weight:950;letter-spacing:.13em}.selected-image strong{font-size:13px;color:#34576a;font-weight:950}.selected-image span{font-size:10px;color:#7f919a}.start-button{display:flex;align-items:center;justify-content:center;gap:10px;width:100%;min-height:45px;border:0;border-radius:14px;background:linear-gradient(135deg,#299378,#267d72);color:white;font-size:13px;font-weight:950;box-shadow:0 8px 18px #277c7040;cursor:pointer;transition:transform .16s,box-shadow .16s}.start-button:hover{transform:translateY(-1px);box-shadow:0 11px 23px #277c704d}.start-button:active{transform:translateY(1px)}.start-button span{font-size:18px;line-height:1}.setup-tip{margin:9px 0 0;color:#82929a;font-size:9px;line-height:1.45;text-align:center}.setup-tip span{color:#e4ac57}
.game-screen{display:flex;flex-direction:column;gap:9px;overflow:hidden}.game-heading{display:flex;align-items:center;justify-content:space-between;gap:14px;flex:0 0 auto}.active-title h1{margin:1px 0 0;font-size:clamp(19px,3vw,25px);line-height:1.05;letter-spacing:-.045em;color:var(--blue2);font-weight:950}.game-stats{display:flex;align-items:center;gap:7px}.stat-chip{display:grid;grid-template-columns:auto auto;grid-template-rows:auto auto;column-gap:6px;align-items:center;min-width:69px;padding:6px 9px;border:1px solid #e4edef;border-radius:12px;background:rgba(255,255,255,.85)}.stat-chip>span{grid-row:1/3;color:#4f9c85;font-size:16px}.stat-chip small{font-size:7px;line-height:1.2;letter-spacing:.08em;color:#92a2a9;font-weight:950}.stat-chip strong{font-size:11px;line-height:1.2;color:#355466;font-weight:950;font-variant-numeric:tabular-nums}.progress-track{height:5px;flex:0 0 auto;overflow:hidden;border-radius:999px;background:#e7eef0}.progress-track>span{display:block;height:100%;width:0;border-radius:inherit;background:linear-gradient(90deg,#54b597,#f2bd66);transition:width .3s}
.game-workspace{flex:1;min-height:0;display:grid;grid-template-columns:minmax(0,1fr) minmax(260px,340px);gap:12px}.board-panel,.pieces-panel{min-height:0;border:1px solid #e3ebee;border-radius:19px;background:rgba(255,255,255,.9);box-shadow:0 7px 24px rgba(38,76,94,.055)}.board-panel{display:flex;flex-direction:column;padding:10px}.board-topline{display:flex;align-items:center;justify-content:space-between;gap:10px;min-height:24px;padding:0 3px;color:#567282;font-size:10px;font-weight:950}.board-topline>span:first-child{white-space:nowrap}.board-instruction{font-size:9px;color:#91a1a8;font-weight:700;text-align:right}.live-dot{display:inline-block;width:7px;height:7px;margin-right:5px;border-radius:50%;background:#55b891;box-shadow:0 0 0 3px #55b8911b;vertical-align:1px}.board-center{flex:1;min-height:0;display:flex;align-items:center;justify-content:center;padding:6px;overflow:visible}.board{position:relative;display:grid;width:min(100%,64vh);aspect-ratio:var(--ratio,1.2);flex:0 1 auto;overflow:visible;border:2px solid rgba(255,255,255,.95);border-radius:13px;background-color:#e9f0f1;background-image:linear-gradient(45deg,#e2eaec 25%,transparent 25%),linear-gradient(-45deg,#e2eaec 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#e2eaec 75%),linear-gradient(-45deg,transparent 75%,#e2eaec 75%);background-size:18px 18px;background-position:0 0,0 9px,9px -9px,-9px 0;box-shadow:0 7px 20px #25465b19;touch-action:none}.board::before{content:"";position:absolute;inset:0;border-radius:11px;background-image:var(--board-image);background-size:cover;background-position:center;opacity:.14;pointer-events:none}.puzzle-slot{appearance:none;-webkit-appearance:none;position:relative;z-index:1;display:block;min-width:0;min-height:0;padding:0;border:1px dashed rgba(43,85,99,.22);background:rgba(255,255,255,.13);cursor:pointer}.puzzle-slot:hover,.puzzle-slot.hint{background:rgba(255,214,122,.3);border-color:#e6a647;box-shadow:inset 0 0 0 2px #efb75b66}.puzzle-slot.filled{border-color:transparent;background:transparent;pointer-events:none}.puzzle-slot.wrong{border-color:#dc6480;background:rgba(231,91,119,.22);box-shadow:inset 0 0 0 2px #dc648066}.placed-piece{position:absolute;z-index:2;touch-action:none;pointer-events:none;filter:drop-shadow(0 2px 2px rgba(24,56,76,.2))}.placed-piece svg,.piece-card svg,.drag-ghost svg{display:block;width:100%;height:100%;overflow:visible}.pieces-panel{display:flex;flex-direction:column;padding:12px;overflow:hidden}.pieces-heading{display:flex;align-items:center;justify-content:space-between;gap:8px;flex:0 0 auto;padding-bottom:8px;border-bottom:1px solid #edf1f2}.pieces-heading h2{margin:1px 0 0;font-size:17px;line-height:1;color:#35576a;font-weight:950}.pieces-heading small{display:block;margin-top:4px;font-size:9px;color:#899aa1;font-weight:700}.piece-tools{display:flex;gap:5px}.icon-action{width:31px;height:31px;display:grid;place-items:center;border:1px solid var(--line);border-radius:10px;background:#fff;color:#57947e;font-weight:950;font-size:15px;cursor:pointer}.icon-action:hover{background:#eff8f2;border-color:#b7daca}.piece-tray{flex:1;min-height:0;overflow:auto;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));align-content:start;gap:8px;padding:9px 3px 5px;scrollbar-width:thin;scrollbar-color:#d2e1e5 transparent}.piece-card{position:relative;width:100%;aspect-ratio:1;min-width:0;padding:5px;border:1px solid #e7edef;border-radius:13px;background:linear-gradient(145deg,#fff,#f6f9f9);box-shadow:0 3px 9px #28485b10;cursor:grab;touch-action:none;user-select:none;-webkit-user-select:none;transition:transform .14s,border-color .14s,box-shadow .14s}.piece-card:hover{z-index:2;transform:translateY(-2px);border-color:#b7d7ca;box-shadow:0 8px 18px #28485b20}.piece-card.selected{border-color:#db8bb0;background:#fff5fa;box-shadow:0 0 0 3px #d5529120}.piece-card:active{cursor:grabbing}.piece-card.dragging{opacity:.25}.drag-ghost{position:fixed;z-index:99999;pointer-events:none;padding:4px;border-radius:11px;background:#ffffffb8;filter:drop-shadow(0 12px 16px #23495c44);transform:scale(1.18);}
.tray-help{flex:0 0 auto;min-height:31px;margin:5px 0 0;padding:8px 9px;border-radius:10px;background:#f3f8f7;color:#6e8987;font-size:9px;line-height:1.4}.tray-footer{display:flex;align-items:center;justify-content:space-between;gap:6px;flex:0 0 auto;margin-top:7px}.keyboard-hint{font-size:8px;color:#98a7ad}.change-image{border:0;padding:5px 7px;background:transparent;color:#398f76;font-size:9px;font-weight:950;cursor:pointer;white-space:nowrap}.change-image:hover{text-decoration:underline}.victory-modal{position:fixed;inset:0;z-index:1000;display:grid;place-items:center;padding:16px;background:rgba(24,52,67,.48);backdrop-filter:blur(6px)}.victory-card{position:relative;width:min(390px,100%);overflow:hidden;padding:27px 25px 22px;border:1px solid #fff;border-radius:27px;background:linear-gradient(150deg,#fff,#f3faf7);text-align:center;box-shadow:0 25px 70px #17384b48;animation:pop-in .28s ease-out}.victory-medal{width:64px;height:64px;margin:0 auto 10px;display:grid;place-items:center;border-radius:22px;background:linear-gradient(145deg,#68c49d,#358e78);color:white;font-size:33px;font-weight:950;box-shadow:0 10px 25px #358e784a;transform:rotate(-5deg)}.victory-card .eyebrow{color:#4c9b7e}.victory-card h2{margin:5px 0;font-size:29px;line-height:1.08;letter-spacing:-.05em;color:#25485b;font-weight:950}.victory-card>p{margin:6px 0 14px;color:#758991;font-size:12px}.victory-stats{display:flex;justify-content:center;gap:10px;margin-bottom:15px}.victory-stats>div{min-width:105px;padding:9px 14px;border:1px solid #e8eeee;border-radius:13px;background:#fff}.victory-stats small,.victory-stats strong{display:block}.victory-stats small{font-size:8px;letter-spacing:.1em;color:#96a5aa;font-weight:950}.victory-stats strong{margin-top:3px;font-size:16px;color:#375c69;font-weight:950}.victory-actions{display:grid;gap:8px}.victory-actions .start-button{min-height:43px}.secondary-button{min-height:39px;border:1px solid #e1eaed;border-radius:13px;background:#fff;color:#607985;font-size:11px;font-weight:900;cursor:pointer}.secondary-button:hover{border-color:#a9d3c2;background:#f6fbf8}.victory-confetti{position:absolute;inset:8px 8px auto;display:flex;justify-content:space-around;color:#efad54;font-size:15px;pointer-events:none}.victory-confetti span:nth-child(2n){color:#d65993;transform:translateY(9px)}.victory-confetti span:nth-child(3n){color:#55b695;transform:translateY(17px)}@keyframes pop-in{from{opacity:0;transform:translateY(10px) scale(.97)}to{opacity:1;transform:translateY(0) scale(1)}}
@media(max-width:850px){.puzzle-app{padding:10px;gap:9px}.setup-card{padding:20px;border-radius:22px}.setup-columns{grid-template-columns:minmax(0,1.2fr) minmax(235px,.8fr);gap:16px}.game-workspace{grid-template-columns:minmax(0,1fr) minmax(230px,30vw);gap:8px}.board-panel{padding:8px}.pieces-panel{padding:10px}.piece-tray{grid-template-columns:repeat(3,minmax(0,1fr));gap:6px}}
@media(max-width:640px){.topbar{height:37px;grid-template-columns:1fr auto 1fr}.brand{font-size:11px}.brand-icon{width:25px;height:25px}.back-link{font-size:11px}.back-link>span:first-child{width:29px;height:29px}.top-action{font-size:10px;padding:7px 8px}.setup-card{padding:16px;border-radius:19px}.welcome-copy{margin-bottom:17px}.welcome-copy h1{font-size:27px}.welcome-copy p{max-width:330px;margin:auto;font-size:11px}.setup-columns{grid-template-columns:1fr;gap:17px}.category-grid{grid-template-columns:repeat(3,minmax(0,1fr));gap:7px}.category-card{border-radius:12px}.category-card img{aspect-ratio:1.45}.category-caption{padding:6px 7px 7px}.category-caption strong{font-size:10px}.category-caption small{font-size:8px}.section-title{margin-bottom:9px}.section-title h2{font-size:13px}.difficulty{min-height:53px;padding:7px 8px}.difficulty strong{font-size:15px}.difficulty small{font-size:7px;right:6px;bottom:6px}.selected-image{margin:9px 0 8px}.selected-image img{width:45px;height:45px}.start-button{min-height:41px;font-size:12px}.setup-tip{font-size:8px}.game-screen{gap:7px}.game-heading{align-items:center}.active-title h1{font-size:19px}.game-stats{gap:4px}.stat-chip{min-width:54px;padding:5px 6px;column-gap:4px;border-radius:10px}.stat-chip>span{font-size:13px}.stat-chip small{font-size:6px}.stat-chip strong{font-size:9px}.moves-chip{display:none}.game-workspace{grid-template-columns:1fr;grid-template-rows:minmax(0,1fr) minmax(124px,32%);gap:7px}.board-panel{padding:7px;border-radius:15px}.board-topline{min-height:19px;padding:0 2px;font-size:9px}.board-instruction{font-size:7px}.board-center{padding:4px}.board{width:min(100%,38vh);max-height:100%;border-radius:10px}.board::before{border-radius:8px}.pieces-panel{padding:8px;border-radius:15px}.pieces-heading{padding-bottom:5px}.pieces-heading .eyebrow{font-size:7px}.pieces-heading h2{font-size:13px}.pieces-heading small{font-size:8px;margin-top:2px}.icon-action{width:27px;height:27px;font-size:13px;border-radius:9px}.piece-tray{grid-template-columns:repeat(6,minmax(0,1fr));gap:5px;padding:6px 2px 3px}.piece-card{padding:3px;border-radius:9px}.tray-help{min-height:21px;margin-top:2px;padding:5px 7px;font-size:8px}.tray-footer{margin-top:4px}.keyboard-hint{display:none}.change-image{font-size:8px}.victory-card{padding:25px 20px 18px}.victory-card h2{font-size:26px}}
@media(max-width:390px){.game-stats .stat-chip:nth-child(2){min-width:48px}.game-stats{gap:3px}.stat-chip{min-width:47px;padding:4px}.category-caption small{display:none}.difficulty-grid{gap:5px}.difficulty{min-height:49px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{scroll-behavior:auto!important;animation-duration:.01ms!important;animation-iteration-count:1!important;transition-duration:.01ms!important}}