/* List of Prime Numbers (.pl-*) */
.pl-calc { background: var(--clr-surface); border: 1px solid var(--clr-border); border-radius: var(--radius); box-shadow: var(--shadow); padding: 1.25rem; margin: 1.25rem 0; }
.pl-input-row { display: flex; gap: .75rem; align-items: flex-end; flex-wrap: wrap; }
.pl-field { flex: 1 1 14rem; }
.pl-label { display: block; font-size: .85rem; font-weight: 600; margin-bottom: .35rem; color: var(--clr-text-muted); }
.pl-input { width: 100%; font-family: var(--font-mono); }
.pl-hint { font-size: .8rem; color: var(--clr-text-faint); margin: .35rem 0 0; }
.pl-btn, .pl-download { display: inline-flex; align-items: center; gap: .4rem; padding: .62rem 1.35rem; font-size: .95rem; font-weight: 600; border-radius: var(--radius); cursor: pointer; transition: background .15s, border-color .15s; }
.pl-btn { color: #fff; background: var(--clr-primary); border: 1px solid var(--clr-primary); }
.pl-btn:hover { filter: brightness(.92); }
.pl-download { color: var(--clr-primary); background: var(--clr-surface); border: 1px solid var(--clr-border); padding: .5rem 1rem; font-size: .88rem; }
.pl-download:hover { background: var(--clr-primary-dim); border-color: var(--clr-primary); }
.pl-error { margin: .75rem 0 0; padding: .65rem .9rem; border-radius: var(--radius-sm); background: var(--clr-danger-bg, #fee2e2); color: var(--clr-danger, #991b1b); border: 1px solid var(--clr-danger, #991b1b); font-size: .9rem; }
.pl-error[hidden] { display: none; }
.pl-toolbar { display: flex; align-items: center; gap: .6rem; margin: 1.1rem 0 .8rem; flex-wrap: wrap; }
.pl-range { flex: 1 1 12rem; margin: 0; text-align: center; font-size: .9rem; color: var(--clr-text-muted); font-variant-numeric: tabular-nums; }
.pl-nav-btn { display: inline-flex; align-items: center; justify-content: center; width: 2.4rem; height: 2.4rem; color: var(--clr-primary); background: var(--clr-surface); border: 1px solid var(--clr-border); border-radius: var(--radius-sm); cursor: pointer; transition: background .15s, border-color .15s; }
.pl-nav-btn:hover:not(:disabled) { background: var(--clr-primary-dim); border-color: var(--clr-primary); }
.pl-nav-btn:disabled { opacity: .4; cursor: not-allowed; }
.pl-btn:focus-visible, .pl-download:focus-visible, .pl-nav-btn:focus-visible, .pl-table a:focus-visible { outline: 2px solid var(--clr-primary); outline-offset: 2px; }
.pl-table-wrap { max-height: 35rem; overflow: auto; border: 1px solid var(--clr-border); border-radius: var(--radius-sm); }
.pl-table { width: 100%; min-width: 34rem; border-collapse: collapse; font-family: var(--font-mono); font-size: .88rem; font-variant-numeric: tabular-nums; }
.pl-table td { padding: .45rem .5rem; text-align: center; border-bottom: 1px solid var(--clr-border); }
.pl-table tr:last-child td { border-bottom: 0; }
.pl-table tr:nth-child(even) td { background: var(--clr-surface-2); }
.pl-table a { color: var(--clr-link); text-decoration: none; }
.pl-table a:hover { text-decoration: underline; }
.pl-sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
@media (max-width: 600px) {
  .pl-btn-wrap, .pl-btn { width: 100%; justify-content: center; }
  .pl-range { order: 3; flex-basis: 100%; }
}