/* WideMath IP subnet calculator (/subnet-calculator/). Every selector is
   scoped to .wm-sn (the widget root) or, in print, to a body that contains
   it, so nothing leaks into other tools. Builds on wm-tools.css. */

.wm-sn .wm-tabs button { min-height: 40px; }
.wm-sn .wm-btn { min-height: 40px; }
.wm-sn .wm-field { min-height: 40px; }
.wm-sn .wm-sn-panel > .wm-row { margin-top: 2px; }
.wm-sn .wm-sn-hint { margin: 8px 0 0; font-size: .84rem; line-height: 1.5; color: var(--wm-mute); }
.wm-sn .wm-sn-hint code { font-size: .8rem; white-space: nowrap; }
.wm-sn h3 { margin: 0 0 10px; font-size: 1.05rem; font-weight: 700; color: var(--wm-ink); }
.wm-sn .wm-sn-block { margin-top: 22px; padding-top: 18px; border-top: 1px solid var(--wm-line); }
.wm-sn .wm-sn-panel > .wm-sn-block:first-child { margin-top: 0; padding-top: 0; border-top: 0; }
.wm-sn .wm-sn-num { width: 130px; }
.wm-sn .wm-sn-lab { display: flex; flex-direction: column; gap: 5px; font-size: .86rem; font-weight: 600; color: var(--wm-text); }
.wm-sn .wm-sn-ta { font: .98rem/1.5 'Cascadia Mono', Consolas, 'Courier New', monospace; resize: vertical; min-height: 120px; }

/* results */
.wm-sn .wm-result b { font-weight: 700; overflow-wrap: anywhere; }
.wm-sn .wm-sn-subtle { display: inline-block; margin-left: 10px; font: 500 .92rem/1.4 'Segoe UI', system-ui, sans-serif; color: var(--wm-mute); }
.wm-sn .wm-sn-stale { opacity: .5; transition: opacity 120ms; }
.wm-sn .wm-sn-mute { color: var(--wm-mute); font-size: .86rem; }
.wm-sn .wm-sn-cards { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.wm-sn .wm-sn-cards b { font: 650 1.02rem/1.35 'Segoe UI', system-ui, sans-serif; font-variant-numeric: tabular-nums; }
.wm-sn .wm-sn-cards em { display: block; font-style: normal; font-size: .76rem; color: var(--wm-mute); margin-top: 2px; }
.wm-sn .wm-sn-cards.wm-sn-wide-cards { grid-template-columns: repeat(auto-fill, minmax(min(300px, 100%), 1fr)); }
.wm-sn .wm-sn-wide-cards b { font: 600 .95rem/1.4 'Cascadia Mono', Consolas, 'Courier New', monospace; overflow-wrap: normal; word-break: normal; }
.wm-sn .wm-sn-actions { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 12px 0 0; }
.wm-sn .wm-sn-warn { background: #fffbeb; border: 1px solid #fde68a; color: #78350f; border-radius: 10px; padding: 10px 14px; margin-top: 12px; font-size: .92rem; line-height: 1.5; }
.wm-sn .wm-sn-exact { margin: 12px 0 0; font-size: .94rem; overflow-wrap: anywhere; }
.wm-sn .wm-sn-sr { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }

/* tables */
.wm-sn .wm-sn-tw, .wm-sn .wm-sn-kvwrap { margin: 14px 0 0; }
.wm-sn .wm-sn-tw { max-height: 460px; overflow: auto; border: 1px solid var(--wm-line); border-radius: 8px; }
.wm-sn .wm-sn-table { width: 100%; border-collapse: collapse; font-size: .88rem; margin: 0; }
.wm-sn .wm-sn-tw .wm-sn-table { border: 0; border-radius: 0; }
.wm-sn .wm-sn-table th { text-transform: none; letter-spacing: 0; font-size: .82rem; padding: 8px 10px; white-space: nowrap; }
.wm-sn .wm-sn-tw thead th { position: sticky; top: 0; z-index: 1; }
.wm-sn .wm-sn-table td { padding: 7px 10px; white-space: nowrap; font-variant-numeric: tabular-nums; }
.wm-sn .wm-sn-kv th { width: 32%; min-width: 110px; background: var(--wm-soft); font-weight: 600; color: var(--wm-text); vertical-align: top; white-space: normal; border-bottom: 1px solid var(--wm-line); }
.wm-sn .wm-sn-kv td { white-space: normal; overflow-wrap: anywhere; }
.wm-sn .wm-sn-long { overflow-wrap: anywhere; word-break: break-all; }

/* binary working */
.wm-sn .wm-sn-work { margin-top: 16px; }
.wm-sn .wm-steps .m { overflow-wrap: anywhere; }
.wm-sn .wm-sn-work > summary { padding: 6px 0; min-height: 40px; display: flex; align-items: center; }
.wm-sn .wm-sn-bin { display: grid; gap: 10px; margin: 10px 0 4px; padding: 12px 14px; background: var(--wm-soft); border: 1px solid var(--wm-line); border-radius: 10px; }
.wm-sn .wm-sn-bin > div { min-width: 0; }
.wm-sn .wm-sn-l { display: block; font-size: .82rem; color: var(--wm-mute); }
.wm-sn .wm-sn-l b { color: var(--wm-ink); font-weight: 650; margin-left: 4px; }
.wm-sn .wm-sn-b { display: block; font: 600 clamp(.74rem, 3.55vw, 1.02rem)/1.6 'Cascadia Mono', Consolas, 'Courier New', monospace; letter-spacing: .02em; white-space: nowrap; overflow-x: auto; }
.wm-sn .wm-sn-b6 { white-space: normal; overflow-wrap: anywhere; word-break: break-all; }
.wm-sn .wm-sn-and { padding-top: 8px; border-top: 1px dashed #cbd5e1; }
.wm-sn .wm-sn-n { color: #166534; background: #dcfce7; border-radius: 2px; }
.wm-sn .wm-sn-h { color: #9a3412; background: #ffedd5; border-radius: 2px; }
.wm-sn .wm-sn-m { color: #1e3a8a; background: #dbeafe; border-radius: 2px; }
.wm-sn .wm-sn-dot { color: #94a3b8; padding: 0 1px; }
.wm-sn .wm-sn-cut { display: inline-block; width: 2px; height: 1.1em; background: var(--wm-ink); vertical-align: -0.18em; margin: 0 2px; border-radius: 1px; }
.wm-sn .wm-sn-legend { display: flex; flex-wrap: wrap; gap: 6px 14px; align-items: center; margin: 6px 0 0; font-size: .82rem; color: var(--wm-mute); }
.wm-sn .wm-sn-legend span { white-space: nowrap; }
.wm-sn .wm-sn-legend i { display: inline-block; width: 14px; height: 14px; border-radius: 3px; vertical-align: -2px; margin-right: 6px; box-shadow: inset 0 0 0 1px rgba(15,23,42,.18); }

/* VLSM rows */
.wm-sn .wm-sn-reqhead, .wm-sn .wm-sn-req { display: grid; grid-template-columns: minmax(0, 1fr) 118px 40px; gap: 8px; align-items: center; }
.wm-sn .wm-sn-reqhead { margin-top: 14px; font-size: .82rem; font-weight: 600; color: var(--wm-text); }
.wm-sn .wm-sn-reqs { display: grid; gap: 8px; margin-top: 6px; }
.wm-sn .wm-sn-x { width: 40px; height: 40px; border: 1px solid var(--wm-line); background: #fff; border-radius: 8px; color: var(--wm-mute); font-size: 1.25rem; line-height: 1; cursor: pointer; }
.wm-sn .wm-sn-x:hover { color: var(--wm-err); border-color: #fecaca; background: var(--wm-err-bg); }
.wm-sn .wm-sn-x:focus-visible, .wm-sn .wm-sn-check input:focus-visible, .wm-sn textarea:focus-visible { outline: 2px solid var(--wm-green-2); outline-offset: 2px; }
.wm-sn .wm-sn-check { display: inline-flex; align-items: center; gap: 8px; min-height: 40px; font-size: .88rem; color: var(--wm-text); cursor: pointer; }
.wm-sn .wm-sn-check input { width: 18px; height: 18px; accent-color: var(--wm-green-2); }

/* practice */
.wm-sn .wm-sn-q { margin: 14px 0 4px; font-size: 1.02rem; line-height: 1.55; color: var(--wm-ink); }
.wm-sn .wm-sn-q b { font: 700 1.12rem 'Cascadia Mono', Consolas, 'Courier New', monospace; color: var(--wm-green); white-space: nowrap; }
.wm-sn .wm-sn-pgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(200px, 100%), 1fr)); gap: 10px 12px; margin: 10px 0 2px; }
.wm-sn .wm-sn-pgrid label { display: flex; flex-direction: column; gap: 5px; font-size: .86rem; font-weight: 600; color: var(--wm-text); }
.wm-sn .wm-sn-pgrid .wm-field { font: 1rem 'Cascadia Mono', Consolas, 'Courier New', monospace; }
.wm-sn .wm-field.wm-sn-ok { border-color: #16a34a; background: #f0fdf4; }
.wm-sn .wm-field.wm-sn-bad { border-color: var(--wm-err); background: var(--wm-err-bg); }
.wm-sn .wm-sn-fb { min-height: 1.2em; font-size: .8rem; font-weight: 600; color: var(--wm-mute); }
.wm-sn .wm-sn-fb.ok { color: #15803d; }
.wm-sn .wm-sn-fb.bad { color: var(--wm-err); }

@media (max-width: 640px) { .wm-sn .wm-sn-cards { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) {
  .wm-sn .wm-sn-wide { display: none; }
  .wm-sn .wm-sn-pgrid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px 10px; }
  .wm-sn .wm-sn-pgrid .wm-field { font-size: .9rem; padding: 7px 6px; }
  .wm-sn .wm-sn-subtle { display: block; margin: 2px 0 0; }
  .wm-sn .wm-sn-reqhead, .wm-sn .wm-sn-req { grid-template-columns: minmax(0, 1fr) 92px 40px; }
  .wm-sn .wm-sn-bin { padding: 10px; }
  .wm-sn .wm-sn-num { width: 110px; }
}
@media (prefers-reduced-motion: reduce) { .wm-sn .wm-sn-stale { transition: none; } }

/* print a clean worksheet: the tool and the article, no site chrome */
@media print {
  body:has(.wm-sn) .nav, body:has(.wm-sn) .breadcrumb, body:has(.wm-sn) .wm-examples, body:has(.wm-sn) footer,
  body:has(.wm-sn) .related, body:has(.wm-sn) .author-box, body:has(.wm-sn) ins.adsbygoogle,
  .wm-sn .wm-tabs, .wm-sn .wm-sn-actions, .wm-sn .wm-sn-x, .wm-sn [data-act] { display: none !important; }
  .wm-sn { box-shadow: none; border-color: #cbd5e1; }
  .wm-sn .wm-sn-tw { max-height: none; overflow: visible; }
  .wm-sn .wm-sn-b { white-space: normal; overflow: visible; }
}