/* RECATOOLS — Prime Number Checker */
.pn-wrap { padding: 1.25rem; }
.pn-input { width: 100%; padding: .8rem 1rem; border: 1px solid #ebebeb; border-radius: 10px; font-size: 1.5rem; text-align: center; font-variant-numeric: tabular-nums; }
.pn-input:focus { outline: none; border-color: #4f46e5; box-shadow: 0 0 0 3px rgba(79,70,229,.15); }
.pn-error { margin: 1rem 0 0; padding: .8rem 1rem; background: #fef2f2; border-left: 4px solid #ef4444; border-radius: 10px; color: #991b1b; font-size: .9rem; }
.pn-result { margin-top: 1.5rem; }
.pn-verdict { text-align: center; font-size: 1.3rem; padding: 1.1rem; border-radius: 14px; }
.pn-verdict b { font-variant-numeric: tabular-nums; }
.pn-yes { background: #f0fdf4; border: 1px solid #bbf7d0; color: #166534; }
.pn-no { background: #fef2f2; border: 1px solid #fecaca; color: #991b1b; }
.pn-fac { margin-top: 1.25rem; text-align: center; }
.pn-fac-label { font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: #7c3aed; margin-bottom: .4rem; }
.pn-fac-val { font-size: 1.5rem; color: #4338ca; font-variant-numeric: tabular-nums; }
.pn-fac-val sup { font-size: .7em; }
.pn-fac-expanded { font-size: 1rem; color: #6b6760; margin-top: .3rem; }
.pn-note { font-size: .85rem; color: #6b6760; text-align: center; margin-top: 1rem; line-height: 1.5; }