/* ==========================================================================
   CIDR & IP Range Converter page. Enqueued only via is_page('cidr-range-converter').
   Self-contained per the site's per-page-stylesheet convention: every shared class
   this page's markup uses is fully defined here, not just referenced.
   ========================================================================== */

.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}

/* ---- shared control primitives ---- */
.subnet-field label{display:block;font-size:12.5px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.04em;margin-bottom:6px}
.subnet-field input,.subnet-field select,.subnet-field textarea{width:100%;padding:14px 16px;border:1px solid var(--border);border-radius:var(--radius-sm);font:600 16px/1.4 var(--font-mono);color:var(--ink);background:var(--white)}
.subnet-field input{height:52px;padding:0 16px}
.subnet-field input:focus-visible,.subnet-field select:focus-visible,.subnet-field textarea:focus-visible{outline:3px solid var(--blue);outline-offset:1px;border-color:var(--blue)}
.subnet-field textarea{resize:vertical;min-height:120px}
.subnet-input-hint{font-size:12.5px;color:var(--muted);margin:8px 0 0;line-height:1.5}
.subnet-input-hint a{color:var(--blue);text-decoration:underline}

.subnet-error{margin-top:14px;padding:13px 16px;border:1px solid #F3C6C1;background:#FDF2F1;border-radius:var(--radius-sm);color:var(--red);font-size:14px;font-weight:600}
.subnet-error[hidden]{display:none}

.subnet-explain{margin:0;padding:0;background:none;color:var(--ink);font-size:14.5px;line-height:1.6}

.subnet-eyebrow{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--teal);margin-bottom:12px}
.subnet-eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--teal);flex:none}
.subnet-hero-lede{color:var(--muted);font-size:16.5px;line-height:1.55;margin:0 0 8px;max-width:640px}

.subnet-btn{height:50px;padding:0 22px;border-radius:999px;border:0;background:var(--blue);color:var(--white);font-weight:700;font-size:14.5px;font-family:ui-sans-serif,sans-serif;cursor:pointer;transition:background .15s}
.subnet-btn:hover,.subnet-btn:focus-visible{background:#1D4FC4}
.subnet-btn:disabled{background:var(--border);color:var(--muted);cursor:not-allowed}
.subnet-btn.subnet-btn-ghost{background:var(--white);border:1px solid var(--border);color:var(--ink)}
.subnet-btn.subnet-btn-ghost:hover,.subnet-btn.subnet-btn-ghost:focus-visible{border-color:var(--blue);color:var(--blue);background:#EAF1FE}
.subnet-btn.subnet-btn-ghost:disabled{background:var(--white);border-color:var(--border);color:var(--border)}

.subnet-btn-tertiary{height:auto;padding:10px 14px;border:1px solid var(--border);border-radius:999px;background:var(--white);color:var(--muted);font-weight:600;font-size:13px;font-family:ui-sans-serif,sans-serif;cursor:pointer}
.subnet-btn-tertiary:hover,.subnet-btn-tertiary:focus-visible{color:var(--blue);border-color:#BFD3F7;background:#EAF1FE}
.subnet-btn-tertiary:disabled{color:var(--border);cursor:not-allowed}
.crc-clear-btn{margin-left:auto}
.crc-clear-btn[hidden]{display:none}

.subnet-family-toggle{display:inline-flex;flex-wrap:wrap;gap:4px;background:var(--bg);border:1px solid var(--border);border-radius:999px;padding:4px}
.subnet-family-toggle label{position:relative;font-size:13px;font-weight:600;color:var(--muted);padding:8px 16px;border-radius:999px;cursor:pointer;display:inline-flex;align-items:center;gap:6px}
.subnet-family-toggle input{position:absolute;opacity:0;width:1px;height:1px}
.subnet-family-toggle label:has(input:checked){background:var(--navy);color:var(--white)}
.subnet-family-toggle input:focus-visible ~ span{outline:3px solid var(--blue);outline-offset:2px;border-radius:999px}
.crc-advanced-badge{font-size:9.5px;font-weight:700;text-transform:uppercase;letter-spacing:.04em;padding:2px 7px;border-radius:999px;background:rgba(255,255,255,.18);color:inherit}
.subnet-family-toggle label:not(:has(input:checked)) .crc-advanced-badge{background:var(--bg);color:var(--muted);border:1px solid var(--border)}

.subnet-disclosure{margin-top:14px;border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;background:var(--white)}
.subnet-disclosure summary{list-style:none;cursor:pointer;padding:15px 18px;font-size:14px;font-weight:700;color:var(--navy);display:flex;align-items:center;justify-content:space-between;background:var(--bg)}
.subnet-disclosure summary::-webkit-details-marker{display:none}
.subnet-disclosure summary::after{content:"+";font-size:18px;color:var(--muted);flex:none}
.subnet-disclosure[open] summary::after{content:"\2212"}
.subnet-disclosure summary:focus-visible{outline:3px solid var(--blue);outline-offset:-3px}
.subnet-disclosure-body{padding:18px}

.subnet-adv-grid{display:grid;grid-template-columns:1fr 1fr;gap:0;border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden}
.subnet-adv-row{display:flex;justify-content:space-between;gap:10px;padding:12px 15px;border-bottom:1px solid var(--border);font-size:13.5px}
.subnet-adv-row:nth-child(odd){border-right:1px solid var(--border)}
.subnet-adv-row .subnet-adv-label{color:var(--muted);font-weight:600}
.subnet-adv-row .subnet-adv-value{font-family:var(--font-mono);color:var(--ink);text-align:right;word-break:break-word}

.subnet-table-wrap{overflow-x:auto;border-radius:10px;border:1px solid var(--border)}
.subnet-table-wrap table{width:100%;border-collapse:collapse;font-size:13.5px}
.subnet-table-wrap thead th{background:var(--navy);color:var(--white);font-size:12px;letter-spacing:.03em;font-weight:700;padding:12px 14px;text-align:left;white-space:nowrap}
.subnet-table-wrap td{padding:12px 14px;border-bottom:1px solid var(--border);color:var(--ink);font-family:var(--font-mono)}
.subnet-table-wrap tbody tr:nth-child(even){background:var(--bg)}
.subnet-table-wrap tbody tr:last-child td{border-bottom:none}
.subnet-table-wrap tbody tr.is-selected-row{background:#EAF1FE}

/* ---- hero ---- */
.vlsm-hero{padding:100px 0 28px;background:var(--white)}
.vlsm-breadcrumb{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);margin-bottom:20px}
.vlsm-breadcrumb a{color:var(--muted)}
.vlsm-breadcrumb a:hover,.vlsm-breadcrumb a:focus-visible{color:var(--blue)}
.vlsm-breadcrumb [aria-current]{color:var(--ink);font-weight:600}
.vlsm-hero-head{max-width:800px}
.vlsm-hero-head h1{font-size:clamp(24px,2.8vw,34px);color:var(--navy);margin:0 0 12px;line-height:1.18}
.vlsm-hero-note{font-size:13px;color:var(--muted);margin:0}

/* ---- tool shell ---- */
.vlsm-tool{padding:0 0 56px;background:var(--white)}
.vlsm-tool-shell{background:var(--white);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow-md);padding:0;overflow:hidden}
.vlsm-tool-section{padding:18px 28px}
.vlsm-tool-section + .vlsm-tool-section{border-top:1px solid var(--border)}
.vlsm-tool-section-tint{background:var(--bg)}
.vlsm-section-heading{font-size:13px;font-weight:700;color:var(--muted);text-transform:uppercase;letter-spacing:.05em;margin:0 0 16px}
.vlsm-actions{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
.vlsm-normalized-note{margin:10px 0 0;padding:10px 14px;border-radius:var(--radius-sm);background:#EAF1FE;border:1px solid #BFD3F7;color:#1D4FC4;font-size:13px;font-weight:600}
.vlsm-normalized-note[hidden]{display:none}

/* ---- mode panels ---- */
.crc-mode-panel[hidden]{display:none}
.crc-field{max-width:420px}
.crc-field-wide{max-width:100%}
.crc-range-row{display:flex;gap:14px;flex-wrap:wrap}
.crc-range-row .crc-field{flex:1 1 220px;max-width:320px}

/* ---- empty state / status ---- */
.crc-empty-state{margin:0 0 18px;padding:16px 18px;border:1px dashed var(--border);border-radius:var(--radius-sm);color:var(--muted);font-size:14px;line-height:1.55;background:var(--bg)}
.crc-empty-state[hidden]{display:none}
.vlsm-status-line{display:none}
.vlsm-status-line .tick{width:18px;height:18px;border-radius:50%;background:var(--teal);color:var(--white);display:inline-flex;align-items:center;justify-content:center;font-size:11px;flex:none}

/* ---- results shell ---- */
.vlsm-results[hidden]{display:none}

/* ---- CIDR result hero (CIDR -> Range) ---- */
.crc-hero{padding:15px 20px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg);margin-bottom:16px}
.crc-hero-eyebrow{display:block;font-size:11.5px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin-bottom:4px}
.crc-hero-main{font-size:26px;font-weight:700;color:var(--navy);margin:0 0 4px;font-family:var(--font-mono);word-break:break-all;line-height:1.2}
.crc-hero-support{margin:0;font-size:14.5px;color:var(--ink);font-weight:600}

/* ---- verdict (Range -> CIDR "can this be one CIDR?") ---- */
.crc-verdict{padding:15px 20px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg);margin-bottom:16px}
.crc-verdict-eyebrow{display:block;font-size:11.5px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin-bottom:4px}
.crc-verdict-question{font-size:13.5px;color:var(--muted);font-weight:600;margin:0 0 6px}
.crc-verdict-answer{font-size:13px;font-weight:800;letter-spacing:.04em;text-transform:uppercase;padding:3px 10px;border-radius:999px;display:inline-block;margin-bottom:8px}
.crc-verdict-main{font-size:22px;font-weight:700;color:var(--navy);margin:0;font-family:var(--font-mono);word-break:break-all;line-height:1.25}
.crc-verdict-yes{background:#E4F5EE;color:#166B4E}
.crc-verdict-no{background:#FCF6EA;color:#7A5510}
.crc-verdict.is-yes{border-color:#B6E3D0;background:#F3FBF7}
.crc-verdict.is-no{border-color:var(--border)}

/* ---- 4-up metric strips (reused for CIDR metrics + coverage integrity) ---- */
.crc-metrics{display:grid;grid-template-columns:repeat(4,1fr);gap:0;border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden;margin-bottom:18px}
.crc-metric{padding:14px 16px;border-right:1px solid var(--border);background:var(--white);display:flex;flex-direction:column;gap:6px}
.crc-metric:last-child{border-right:0}
.crc-metric-label{font-size:11px;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.03em}
.crc-metric-value{font:700 16px var(--font-mono);color:var(--navy);word-break:break-word}
.crc-metric.is-good .crc-metric-value{color:#166B4E}
.crc-metric.is-bad .crc-metric-value{color:#B4321F}

/* ---- Address Block visualization (CIDR mode) ---- */
.crc-address-block{position:relative;height:56px;border-radius:10px;background:var(--navy);display:flex;align-items:center;justify-content:center;color:var(--white);font:700 14px var(--font-mono);overflow:hidden;white-space:nowrap;text-overflow:ellipsis;padding:0 14px}
.crc-address-block-caption{display:flex;justify-content:space-between;gap:10px;margin:8px 0 0;font-size:12.5px;color:var(--muted);font-weight:600}
.crc-address-block-caption b{color:var(--ink);font-family:var(--font-mono)}

/* network|usable|broadcast three-part bar */
.crc-usable-bar{display:flex;gap:2px;height:44px;margin-top:10px;border-radius:8px;overflow:hidden}
.crc-usable-seg{display:flex;align-items:center;justify-content:center;font:600 11px var(--font-mono);color:var(--white);white-space:nowrap;overflow:hidden}
.crc-usable-seg-network{background:var(--teal);flex:0 0 auto;min-width:34px}
.crc-usable-seg-usable{background:var(--blue);flex:1 1 auto}
.crc-usable-seg-broadcast{background:#5B4FC4;flex:0 0 auto;min-width:34px}
.crc-usable-legend{display:flex;flex-wrap:wrap;gap:14px;margin-top:8px;font-size:11.5px;color:var(--muted)}
.crc-usable-legend span{display:inline-flex;align-items:center;gap:6px}
.crc-usable-legend i{width:10px;height:10px;border-radius:3px;display:inline-block}
.crc-usable-legend i.crc-dot-network{background:var(--teal)}
.crc-usable-legend i.crc-dot-usable{background:var(--blue)}
.crc-usable-legend i.crc-dot-broadcast{background:#5B4FC4}
.crc-special-note{margin:10px 0 0;padding:10px 14px;border-radius:var(--radius-sm);background:#EAF7F5;border:1px solid #BFE3DC;color:#0F5C51;font-size:13px;font-weight:600}
.crc-special-note[hidden]{display:none}

/* ---- Coverage Integrity ---- */
.crc-coverage-heading{display:flex;align-items:baseline;gap:10px;margin:0 0 12px}
.crc-coverage-heading h2{font-size:16px;color:var(--navy);margin:0}
.crc-coverage-exact-tag{font-size:11.5px;font-weight:800;text-transform:uppercase;letter-spacing:.04em;color:#166B4E;background:#E4F5EE;border:1px solid #B6E3D0;padding:3px 10px;border-radius:999px}
.crc-coverage-note{margin:0 0 18px;font-size:13.5px;color:var(--ink);line-height:1.6}

/* ---- Range Decomposition Map (adaptive proportional segments, mirrors Overlap Checker) ---- */
.crc-decomp-track-wrap{position:relative}
.crc-decomp-track{position:relative;height:52px;border-radius:10px;background:var(--bg);border:1px solid var(--border);overflow:hidden;display:flex}
.crc-decomp-seg{position:relative;height:100%;display:flex;align-items:center;justify-content:center;font:600 11.5px var(--font-mono);color:var(--white);background:var(--blue);border:0;border-right:1px solid rgba(255,255,255,.35);cursor:pointer;padding:0 4px;overflow:hidden;white-space:nowrap}
.crc-decomp-seg:last-child{border-right:0}
.crc-decomp-seg:nth-child(even){background:#1D4FC4}
.crc-decomp-seg:focus-visible{outline:3px solid var(--ink);outline-offset:-3px}
.crc-decomp-seg.is-selected{box-shadow:inset 0 0 0 3px var(--white),inset 0 0 0 5px var(--teal);z-index:2}
.crc-decomp-seg.crc-seg-tiny{box-shadow:0 0 0 1px rgba(255,255,255,.85)}
.crc-decomp-seg.crc-seg-medium{font-size:10.5px}

/* The callout lives in its own normal-flow lane *above* the track, with its height
   reserved from the callout's real rendered size (measured in JS), not a fixed padding
   guess — the exact defect class found and fixed on the Overlap Checker's relationship
   map. An SVG connector bridges the (possibly clamped) callout box to the true,
   never-clamped data position, so tiny segments near either edge are always pointed at
   correctly and nothing below the lane (legend, notes) can ever be overlapped. */
.crc-callout-lane{position:relative;margin-bottom:8px}
.crc-callout-connector{position:absolute;inset:0;pointer-events:none;overflow:visible}
.crc-callout-connector-line{stroke:var(--border);stroke-width:1.5}
.crc-callout-connector-dot{fill:var(--blue)}
.crc-callout{position:absolute;top:0;left:0;display:flex;flex-direction:column;gap:1px;padding:8px 12px;background:var(--white);border:1px solid var(--border);border-radius:8px;box-shadow:var(--shadow-md);white-space:nowrap;max-width:calc(100vw - 48px);cursor:pointer;text-align:left;font-family:inherit}
.crc-callout:hover,.crc-callout:focus-visible{border-color:var(--blue)}
.crc-callout:focus-visible{outline:3px solid var(--blue);outline-offset:2px}
.crc-callout-line1{font:700 12.5px var(--font-mono);color:var(--navy);overflow:hidden;text-overflow:ellipsis}
.crc-callout-line2{font-size:11.5px;color:var(--muted);font-weight:600}

.crc-decomp-legend{display:flex;flex-wrap:wrap;gap:16px;margin-top:12px;font-size:12px;color:var(--muted)}
.crc-decomp-legend span{display:inline-flex;align-items:center;gap:6px}
.crc-decomp-legend i{width:12px;height:12px;border-radius:3px;display:inline-block}
.crc-decomp-legend i.crc-dot-range{background:var(--bg);border:1px solid var(--border)}
.crc-decomp-legend i.crc-dot-block{background:var(--blue)}

.crc-decomp-note{margin:8px 0 0;font-size:12px;color:var(--muted)}

/* ---- Boundary explorer ---- */
.crc-why-block-select{font-size:12.5px;color:var(--muted);margin:0 0 10px}
.crc-why-block-body{font-size:13.5px;color:var(--ink);line-height:1.6}

/* ---- Merge: reduction verdict ---- */
.crc-reduction{padding:15px 20px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg);margin-bottom:16px}
.crc-reduction-eyebrow{display:block;font-size:11.5px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin-bottom:4px}
.crc-reduction-main{font-size:20px;font-weight:700;color:var(--navy);margin:0 0 6px;font-family:var(--font-mono)}
.crc-reduction-support{margin:0;font-size:13.5px;color:var(--ink)}
.crc-reduction.is-reduced{border-color:#BFE3DC;background:#EAF7F5}
.crc-reduction.is-reduced .crc-reduction-main{color:#0F5C51}

/* before/after transformation */
.crc-before-after{display:flex;align-items:center;gap:14px;flex-wrap:wrap;margin:14px 0 18px}
.crc-ba-col{flex:1 1 200px;min-width:180px}
.crc-ba-label{font-size:11px;font-weight:700;text-transform:uppercase;letter-spacing:.03em;color:var(--muted);margin-bottom:6px;display:block}
.crc-ba-list{display:flex;flex-direction:column;gap:4px}
.crc-ba-chip{font:600 12.5px var(--font-mono);background:var(--white);border:1px solid var(--border);border-radius:8px;padding:6px 10px;color:var(--ink)}
.crc-ba-chip.is-merged{background:#EAF7F5;border-color:#BFE3DC;color:#0F5C51;font-weight:700}
.crc-ba-arrow{flex:0 0 auto;font-size:22px;color:var(--muted);align-self:center}

/* findings (duplicate / redundant) */
.crc-findings{display:flex;flex-direction:column;gap:8px;margin:0 0 18px}
.crc-finding{padding:10px 14px;border-radius:var(--radius-sm);background:var(--white);border:1px solid var(--border);font-size:13px;color:var(--ink);line-height:1.5}
.crc-finding b{font-family:var(--font-mono);color:var(--navy)}

/* ---- visual map (legacy id retained for the block table's inspector panel) ---- */
.vlsm-detail-panel{margin-top:14px;padding:18px 20px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--bg);min-height:1px}
.vlsm-detail-panel-empty{font-size:13px;color:var(--muted)}
.vlsm-detail-title{font-size:15px;font-weight:700;color:var(--navy);margin:0 0 4px}
.vlsm-detail-cidr{font:700 14px var(--font-mono);color:var(--ink);margin:0 0 14px;display:block}
.vlsm-detail-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:10px 20px}
.vlsm-detail-row{display:flex;flex-direction:column;gap:3px}
.vlsm-detail-label{font-size:11px;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.03em}
.vlsm-detail-value{font:600 13.5px var(--font-mono);color:var(--ink);word-break:break-all}

/* ---- table controls / pagination ---- */
.vlsm-table-controls{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:10px;margin-top:28px;margin-bottom:10px}
.vlsm-order-note{font-size:12.5px;color:var(--muted);font-weight:600}
.splitter-pagination{display:flex;gap:8px}
.vlsm-advanced-columns-label{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--muted);font-weight:600;cursor:pointer;margin-top:10px}

.vlsm-table-wrap table{min-width:600px}
.vlsm-col-advanced{display:none}
body.vlsm-show-advanced .vlsm-col-advanced{display:table-cell}

.vlsm-export-actions{margin-top:28px;padding-top:24px;border-top:1px solid var(--border)}
.crc-export-actions-secondary{margin-top:10px}

/* ---- reduced motion ---- */
@media(prefers-reduced-motion:reduce){
	.crc-decomp-seg,.subnet-btn{transition:none!important}
}

/* ---- responsive ---- */
@media(max-width:1050px){
	.vlsm-hero{padding-top:96px}
	.crc-metrics{grid-template-columns:1fr 1fr}
	.crc-metric{border-bottom:1px solid var(--border)}
	.crc-metric:nth-child(2n){border-right:0}
	.vlsm-detail-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
	.vlsm-tool-section{padding:15px 20px}
	.crc-range-row{flex-direction:column;align-items:stretch}
	.crc-range-row .crc-field{max-width:none}
	.crc-hero-main{font-size:21px}
	.crc-verdict-main{font-size:18px}
}
@media(max-width:620px){
	.vlsm-hero{padding:84px 0 24px}
	.crc-metrics{grid-template-columns:1fr}
	.crc-metric{border-right:0!important;border-bottom:1px solid var(--border)}
	.crc-metric:last-child{border-bottom:0}
	.vlsm-detail-grid{grid-template-columns:1fr}
	.vlsm-table-controls{flex-direction:column;align-items:flex-start}
	.crc-before-after{flex-direction:column;align-items:stretch}
	.crc-ba-arrow{align-self:center;transform:rotate(90deg)}
	.crc-callout{font-size:11px;padding:7px 10px;max-width:calc(100vw - 32px)}
	.crc-callout-line1{font-size:11.5px}
	.crc-callout-line2{font-size:11px}
	.crc-usable-bar{flex-direction:column;height:auto}
	.crc-usable-seg{height:32px}
}

/* ---- guide / educational content ---- */
.subnet-guide{padding:56px 0;background:var(--bg)}
.subnet-guide-inner{max-width:820px;margin:0 auto}
.subnet-guide h2{font-size:24px;color:var(--navy);margin:44px 0 14px}
.subnet-guide h2:first-child{margin-top:0}
.subnet-guide p{color:var(--ink);font-size:15.5px;line-height:1.65;margin:0 0 14px;max-width:74ch}
.subnet-guide p a{color:var(--blue);text-decoration:underline}
.subnet-guide code{font-family:var(--font-mono);background:var(--white);border:1px solid var(--border);border-radius:4px;padding:1px 6px;font-size:.92em}