.hidden-view{display:none!important}.page-shell{display:grid;padding:1.25rem 1rem 2rem;justify-content:center}#setup-view,#game-view{width:min(100%,32rem);background:var(--bg-color);border-radius:calc(1.5rem * 1.4);box-shadow:0 18px 40px #0f172a17;overflow:hidden;border:1px solid rgba(226,232,240,.9)}.setup-header{background:var(--purple-primary);color:#fff;padding:1.4rem 1.5rem;text-align:center;display:grid;gap:.25rem;align-items:center}.setup-header .icon{width:48px;height:48px;opacity:.98;margin:0 auto}#setup-view h1{font-size:1.55rem;margin:0;font-weight:800}#setup-view p{margin:0;color:#fffffff2;font-size:.95rem}.setup-body{padding:1.25rem 1.25rem 1.4rem;display:grid;gap:1rem}.section-title{font-size:.8rem;font-weight:700;color:var(--text-muted);text-transform:uppercase;letter-spacing:.14em;margin-bottom:.5rem}#op-error{color:var(--red-base);font-size:.82rem;margin-top:.35rem;display:none}#operations-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:.55rem}.options-grid{display:grid;gap:.8rem}.op-btn{padding:.7rem .8rem;border-radius:1rem;font-size:.95rem;font-weight:700;border:2px solid var(--border-color);background:var(--bg-card);color:var(--text-color);transition:transform .12s ease,box-shadow .12s ease,background .12s ease;cursor:pointer;text-align:center}.op-btn:hover{transform:translateY(-1px);box-shadow:0 8px 16px #0206170f}.op-btn.selected{background:#6366f11a;border-color:#6366f1f2;color:var(--purple-primary);box-shadow:inset 0 0 0 1px #6366f126}#difficulty-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:.5rem}.diff-btn{padding:.65rem .4rem;border-radius:.75rem;background:var(--bg-card);border:1px solid rgba(226,232,240,.95);cursor:pointer;font-weight:700;color:var(--text-color);transition:all .12s ease}.diff-btn.selected{background:var(--purple-primary);color:#fff;border-color:#6366f18c;box-shadow:0 8px 16px #6366f11f}.toggle-control{display:flex;align-items:center;gap:.8rem;padding:.85rem .95rem;border:1px solid rgba(226,232,240,.95);border-radius:1rem;background:#fff;cursor:pointer}.toggle-switch{position:relative;display:inline-flex;align-items:center}.toggle-switch input{position:absolute;opacity:0;pointer-events:none}.toggle-track{width:3rem;height:1.75rem;border-radius:999px;background:#dbe4f0;position:relative;display:inline-flex;align-items:center;transition:background .16s ease;box-shadow:inset 0 1px 2px #0f172a14}.toggle-track.on{background:linear-gradient(135deg,var(--purple-primary),#7c3aed)}.toggle-thumb{width:1.2rem;height:1.2rem;border-radius:50%;background:#fff;position:absolute;left:.28rem;top:.28rem;transition:transform .16s ease;box-shadow:0 2px 6px #0f172a26}.toggle-thumb.on{transform:translate(1.25rem)}.toggle-text{font-size:.95rem;color:var(--text-color)}#start-btn{width:100%;padding:.95rem 1rem;background:var(--purple-primary);color:#fff;border-radius:1rem;font-weight:800;font-size:1rem;display:flex;align-items:center;justify-content:center;gap:.5rem;border:none;cursor:pointer;box-shadow:0 10px 20px #674ea729;transition:transform .08s ease,box-shadow .12s ease}#start-btn:hover{transform:translateY(-1px)}#start-btn:disabled{background:var(--border-color);cursor:not-allowed;opacity:.75;box-shadow:none}.icon{width:1.5rem;height:1.5rem}.icon-btn{background:transparent;border:none;padding:6px;border-radius:8px;cursor:pointer;color:var(--text-muted)}.icon-btn:hover{color:var(--purple-primary);background:#6366f10a}.game-header{display:flex;align-items:center;justify-content:space-between;padding:.9rem 1rem;background:var(--bg-card-hover);border-bottom:1px solid var(--border-color)}.score-area{text-align:center}.score-label{font-size:.72rem;color:var(--text-muted);font-weight:700;text-transform:uppercase;letter-spacing:.08em;margin:0}.score-value{margin:0;font-size:1rem;font-weight:800;color:var(--text-color)}.score-correct{color:var(--green-base)}.score-sep{color:#0f172a1f;margin:0 .3rem}.game-body{padding:1.65rem 1.25rem;text-align:center;position:relative}#question-area{min-height:120px;display:flex;align-items:center;justify-content:center}#question-area h2{font-size:3.2rem;font-weight:900;margin:0;color:var(--text-color)}.equals{color:#0f172a2e;font-size:1.75rem;margin-left:.5rem}#question-text{font-weight:900}#user-answer{width:100%;text-align:center;font-size:2rem;font-weight:800;padding:.95rem;background:var(--bg-card);border:1px solid rgba(226,232,240,1);border-radius:12px;outline:none;transition:box-shadow .12s ease,border-color .12s ease}#user-answer:focus{border-color:var(--purple-primary);box-shadow:0 6px 18px #674ea714;background:#fff}#submit-answer-btn{margin-top:1rem;width:100%;padding:.9rem;border-radius:12px;background:var(--purple-primary);color:#fff;border:none;font-weight:800;font-size:1rem;cursor:pointer;box-shadow:0 8px 18px #674ea714}#submit-answer-btn:disabled{opacity:.7;cursor:not-allowed}#feedback-overlay{display:none;margin-top:1.25rem;padding:1.25rem;border-radius:1.5rem;border:2px solid var(--border-color)}#feedback-overlay.show{display:block}#feedback-overlay.correct{background:#ecfdf5;border-color:#10b9812e}#feedback-overlay.incorrect{background:#fff1f2;border-color:#ef44441f}.feedback-correct,.feedback-incorrect{display:none;align-items:center;justify-content:center;gap:.5rem}.feedback-correct.show,.feedback-incorrect.show{display:flex;flex-direction:column}.next-btn{width:100%;margin-top:1rem;padding:.75rem;border-radius:12px;font-weight:800;border:none;cursor:pointer}.next-btn.success{background:#10b981;color:#fff}.next-btn.danger{background:#ef4444;color:#fff}.animate-feedback{animation:scaleIn .22s ease both}@keyframes scaleIn{0%{transform:scale(.98);opacity:0}to{transform:scale(1);opacity:1}}body>[data-astro-cid-4jrzopfe]:not(header):not(footer):not(#cookie-banner):not(main):not(.container):not(#app):not(#screen-start){width:100%;max-width:var(--max-width);margin-inline:auto;padding-inline:.8rem}