@import url("../theme.css");
:root{font-family:var(--font)}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;min-height:100%;background:var(--cream);color:var(--ink)}
body{min-height:100dvh;padding:env(safe-area-inset-top) max(12px,env(safe-area-inset-right)) env(safe-area-inset-bottom) max(12px,env(safe-area-inset-left));}
button,a{font:inherit;color:inherit}button{touch-action:manipulation;cursor:pointer}
button:focus-visible,a:focus-visible{outline:4px solid var(--focus);outline-offset:3px}
.topbar{height:72px;max-width:1040px;margin:0 auto;display:grid;grid-template-columns:60px 1fr 60px;align-items:center;gap:8px}
.topbar h1{font-size:clamp(1.25rem,5vw,2rem);text-align:center;margin:0;font-weight:950;letter-spacing:-.03em}.topbar h1 span{color:var(--count-b)}
.home,.sound{height:54px;width:54px;display:grid;place-items:center;border:1px solid var(--edge);border-bottom:4px solid var(--edge-dark);border-radius:17px;background:var(--paper);font-size:1.55rem;text-decoration:none}
.merge-header{max-width:1064px;margin:auto}.merge-header .nb-title{flex:1;min-width:0;text-align:center;font-size:clamp(1rem,4vw,1.3rem)}
main{max-width:1040px;margin:auto;padding:6px 0 32px}
.controls{display:flex;justify-content:space-between;align-items:center;gap:12px;margin:8px 0 4px}.mode{display:flex;gap:8px}
:is(.mode-btn,.undo,.seed):not(.nb-btn){min-width:44px;min-height:52px;padding:8px 16px;border-radius:16px;border:1px solid var(--edge);border-bottom:4px solid var(--edge-dark);background:var(--paper);font-weight:900;font-size:1.08rem}
.mode-btn,.undo{min-width:44px}
.undo:disabled{opacity:.4;cursor:default}.hint{min-height:1.5em;text-align:center;font-size:1.08rem;font-weight:800;margin:6px 0 10px;color:var(--muted)}
.equation{text-align:center;font-weight:900;font-size:clamp(1.25rem,5vw,1.8rem);overflow-wrap:anywhere;margin:12px 0;padding:10px;border:2px solid var(--gold-edge);border-radius:16px;background:var(--glow)}
.save-warning{padding:12px;margin:8px 0;border:2px solid var(--gold-edge);border-radius:16px;background:var(--glow);font-weight:800;text-align:center}
.board{display:grid;grid-template-columns:repeat(auto-fit,minmax(132px,1fr));gap:10px;min-height:150px;padding:8px;border-radius:24px;background:var(--tray)}
.piece{position:relative;min-width:0;min-height:158px;padding:8px 6px 10px;border:3px solid transparent;border-radius:20px;background:var(--paper);display:flex;flex-direction:column;align-items:center;justify-content:space-between;gap:2px;box-shadow:0 3px 0 var(--edge);transition:transform .12s,border-color .12s,background .12s}
.piece:active,.seed:active,.mode-btn:active,.undo:not(:disabled):active{transform:translateY(2px)}
.piece.selected{border-color:var(--picked-edge);background:var(--picked);transform:translateY(-2px)}
.piece svg{width:min(100%,112px);height:100px;overflow:visible}.piece .preview-note{font-size:.65rem;line-height:1.2;font-weight:1000;letter-spacing:.03em;color:var(--muted);padding:3px 7px;border-radius:999px;background:var(--cream);max-width:100%;text-align:center}.piece .value{font-size:clamp(1.35rem,5vw,1.9rem);line-height:1;font-weight:1000;color:var(--ink);overflow-wrap:anywhere;max-width:100%;text-align:center}
.piece .selected-mark{position:absolute;right:7px;top:4px;font-size:1.25rem}.piece:focus-visible{outline:4px solid var(--focus);outline-offset:2px}
.palette-wrap,.collection-wrap{margin:14px 0 0;padding:14px;border-radius:22px;background:var(--paper);border:1px solid var(--edge)}.palette-wrap h2,.collection-wrap h2{font-size:1rem;text-transform:uppercase;letter-spacing:.08em;margin:0 0 8px;color:var(--muted)}
.palette{display:flex;gap:8px;flex-wrap:wrap}.seed{min-width:64px;font-size:1.2rem}.seed:disabled{opacity:.45}
.picture-seed{flex-direction:column;min-width:88px;max-width:150px;padding:8px;gap:4px}.seed-art{display:grid;place-items:center;height:88px;max-width:100%}.seed-art svg{width:84px;height:80px}.seed-art .preview-note{display:none}
.next-hint{min-height:1.2em;color:var(--muted);font-size:.95rem;font-weight:700;margin:8px 0 0}
.collection{display:flex;gap:7px;flex-wrap:wrap;max-height:140px;overflow:auto}.found-chip{max-width:100%;overflow-wrap:anywhere;border:1px solid var(--edge);background:var(--paper);border-radius:999px;padding:6px 11px;font-weight:900}.status{position:fixed;bottom:max(12px,env(safe-area-inset-bottom));left:50%;transform:translateX(-50%);z-index:2;margin:0;padding:10px 16px;max-width:min(92vw,640px);border-radius:20px;background:var(--ink);color:var(--paper);font-weight:800;box-shadow:0 4px 14px #0003;opacity:0;pointer-events:none;transition:opacity .15s}.status.show{opacity:1}
.joined{animation:join-pop .55s cubic-bezier(.2,.8,.3,1.2)}@keyframes join-pop{0%{transform:scale(.55) rotate(-8deg);opacity:.2}75%{transform:scale(1.12)}100%{transform:scale(1);opacity:1}}
@media(min-width:740px){main{padding-top:12px}.board{grid-template-columns:repeat(auto-fit,minmax(150px,1fr));gap:14px;padding:12px}.piece{min-height:180px}.piece svg{height:118px}}
@media(max-width:410px){.topbar{grid-template-columns:50px 1fr 50px;height:64px}.home,.sound{height:48px;width:48px}.board{grid-template-columns:repeat(2,minmax(0,1fr))}.mode-btn,.undo{font-size:.98rem;padding:7px 11px}.piece{min-height:142px}}
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important;scroll-behavior:auto!important}}