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4px 4px}.picker-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(40px,1fr));gap:4px}.picker-cell{-webkit-appearance:none;-moz-appearance:none;appearance:none;border:0;background:transparent;font-size:22px;aspect-ratio:1;border-radius:8px;cursor:pointer;transition:background .12s,transform .12s;padding:0}.picker-cell:hover{background:var(--paper);transform:scale(1.1)}.picker-cell.is-picked{background:color-mix(in oklch,var(--tomato) 22%,var(--paper));outline:1.5px solid var(--tomato)}.picker-cell:disabled{opacity:.3;cursor:not-allowed}.modal-actions{display:flex;justify-content:flex-end;gap:10px}.modal-actions .btn[disabled]{opacity:.4;cursor:not-allowed;transform:none;box-shadow:0 3px 0 var(--ink)}.modal-actions .btn-primary[disabled]{box-shadow:0 3px 0 var(--tomato-deep)}@media (max-width: 540px){.modal{padding:16px 16px 14px}.modal-title{font-size:20px}.picker-slot{font-size:22px}}@media (max-width: 540px){.app{padding:44px 16px 60px}.eq-card{padding:14px 16px}.eq-parts{font-size:18px;gap:6px}.eq-op{font-size:22px}.eq-emoji,.eq-solved-num,.eq-answer{font-size:26px}.solver{padding:24px 18px}}