/* ==========================================================================
   Subnet Overlap Checker page. Enqueued only via is_page('subnet-overlap-checker').
   Self-contained per the site's per-page-stylesheet convention.
   ========================================================================== */

.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 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 textarea:focus-visible{outline:3px solid var(--blue);outline-offset:1px;border-color:var(--blue)}
.subnet-field textarea{resize:vertical;min-height:140px}
.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-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:15.5px;line-height:1.6;margin:0 0 22px;max-width:46ch}

.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}

.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}
.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}

.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}

/* ---- hero ---- */
.vlsm-hero{padding:92px 0 44px;background:radial-gradient(900px 380px at 88% 0%,rgba(37,99,235,.055),rgba(37,99,235,0) 62%),linear-gradient(180deg,#FBFCFE,var(--white) 64%)}
.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(30px,3.6vw,44px);color:var(--navy);margin:0 0 10px;line-height:1.12;letter-spacing:-.01em}
.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}
.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}

.ovl-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}

/* ---- results ---- */
.vlsm-results[hidden]{display:none}
/* The verdict card is the primary, non-duplicated status signal on this page — this row
   still receives its text and its [hidden] toggle from JS (kept for the aria-live text
   path and so nothing else depends on it), but stays visually collapsed here so it never
   duplicates the verdict headline directly above it. */
.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}

.crc-headline{font-size:17px;font-weight:700;color:var(--navy);margin:0 0 18px;padding:12px 16px;border-radius:var(--radius-sm);background:#EAF1FE;border:1px solid #BFD3F7}
.crc-headline.ovl-headline-amber{background:#FCF6EA;border-color:#EFD7AE;color:#7A5510}
.crc-headline.ovl-headline-neutral{background:var(--bg);border-color:var(--border);color:var(--ink)}

.ovl-network-pair{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.ovl-network-card{display:flex;flex-direction:column;gap:4px;padding:16px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--white);min-width:0}
.ovl-network-label{font-size:11px;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.03em}
.ovl-network-cidr{font:700 16px var(--font-mono);color:var(--navy);margin-bottom:4px;overflow-wrap:anywhere}
.ovl-network-range{font-size:12.5px;color:var(--muted);font-family:var(--font-mono);overflow-wrap:anywhere;min-width:0}
.ovl-network-micro{display:flex;flex-wrap:wrap;align-items:baseline;gap:6px;margin-top:2px;min-width:0}
.ovl-micro-label{font-size:10.5px;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.03em;flex:none}

/* ---- visual relationship ---- */
.ovl-visual{margin-top:6px}
.ovl-track{position:relative;height:52px;border-radius:10px;background:var(--bg);border:1px solid var(--border);overflow:hidden}
.ovl-seg{position:absolute;top:0;bottom:0;display:flex;align-items:center;justify-content:center;font:600 12px var(--font-mono);color:var(--white);border-radius:8px;cursor:pointer;border:0;padding:0 8px;overflow:hidden;white-space:nowrap}
.ovl-seg:focus-visible{outline:3px solid var(--ink);outline-offset:-3px}
.ovl-seg-outer{background:var(--navy);left:0;right:0;justify-content:flex-start;padding-left:14px}
.ovl-seg-inner{background:var(--blue);z-index:2}
.ovl-seg-inner.is-selected,.ovl-seg-outer.is-selected{box-shadow:inset 0 0 0 3px var(--white),inset 0 0 0 5px var(--teal)}

.ovl-side-by-side{display:flex;gap:2px;height:52px}
.ovl-side-by-side .ovl-seg{position:static;flex:1 1 0;border-radius:8px}
.ovl-side-by-side.ovl-disjoint{gap:16px}
.ovl-side-by-side.ovl-disjoint::after{content:none}
.ovl-gap-indicator{display:flex;align-items:center;justify-content:center;color:var(--muted);font-size:11px;font-weight:700}

.ovl-stack{display:flex;flex-direction:column;gap:6px}
.ovl-stack .ovl-seg{position:static;height:44px;border-radius:8px;width:100%}

.ovl-legend{display:flex;gap:16px;margin-top:10px;font-size:12px;color:var(--muted)}
.ovl-legend span{display:inline-flex;align-items:center;gap:6px}
.ovl-legend i{width:12px;height:12px;border-radius:3px;display:inline-block}

.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}

.ovl-note-block{margin-top:22px;padding-top:20px;border-top:1px solid var(--border)}
.ovl-note-block p{margin:0 0 10px;font-size:14.5px;color:var(--ink);line-height:1.6}
.ovl-planning-note{color:var(--muted)!important;font-size:13.5px!important}
.ovl-planning-note[hidden]{display:none}

/* ---- summary bar / duplicates ---- */
.vlsm-plan-header{display:flex;align-items:baseline;justify-content:space-between;flex-wrap:wrap;gap:10px;margin-bottom:14px}
.vlsm-plan-header h2{font-size:16px;color:var(--navy);margin:0}
.vlsm-summary-bar{display:grid;grid-template-columns:repeat(3,1fr);border:1px solid var(--border);border-radius:var(--radius-sm);overflow:hidden}
.vlsm-summary-item{padding:14px 16px;border-right:1px solid var(--border);background:var(--white)}
.vlsm-summary-item:last-child{border-right:0}
.vlsm-summary-label{display:block;font-size:11px;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.03em;margin-bottom:6px}
.vlsm-summary-value{display:block;font:700 17px var(--font-mono);color:var(--navy)}
.vlsm-summary-note{display:flex;align-items:flex-start;gap:8px;margin:12px 0 0;font-size:12.5px;color:var(--muted);line-height:1.5}

.ovl-duplicates-wrap[hidden]{display:none}
.vlsm-remaining-list{list-style:none;margin:8px 0 0;padding:0;display:flex;flex-wrap:wrap;gap:8px}
.vlsm-remaining-list li{font:600 13px var(--font-mono);background:var(--white);border:1px solid var(--border);border-radius:8px;padding:6px 12px;color:var(--ink)}

/* ---- 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-table-wrap table{min-width:640px}
.vlsm-export-actions{margin-top:28px;padding-top:24px;border-top:1px solid var(--border)}

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

/* ---- responsive ---- */
@media(max-width:1050px){
	.vlsm-hero{padding-top:96px}
	.vlsm-summary-bar{grid-template-columns:1fr 1fr}
	.vlsm-detail-grid{grid-template-columns:1fr 1fr}
}
@media(max-width:768px){
	.vlsm-tool-section{padding:15px 20px}
	.vlsm-summary-bar{grid-template-columns:1fr 1fr}
	.crc-range-row{flex-direction:column;align-items:stretch}
	.crc-range-row .crc-field{max-width:none}
	.ovl-network-pair{grid-template-columns:1fr}
}
@media(max-width:620px){
	.vlsm-hero{padding:84px 0 24px}
	.vlsm-summary-bar{grid-template-columns:1fr}
	.vlsm-summary-item{border-right:0!important;border-bottom:1px solid var(--border)}
	.vlsm-summary-item:last-child{border-bottom:0}
	.vlsm-detail-grid{grid-template-columns:1fr}
	.vlsm-table-controls{flex-direction:column;align-items:flex-start}
	.ovl-side-by-side{flex-direction:column;height:auto}
	.ovl-side-by-side .ovl-seg{height:44px}
}

/* ---- 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}

/* ==========================================================================
   Premium V2 additions: verdict, metrics, shared/gap/merge card, meaning &
   disclosure blocks, plan status, conflict matrix, hierarchy tree, filters,
   empty states. Appended to the existing self-contained stylesheet.
   ========================================================================== */

.ovl-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)}
.ovl-empty-state[hidden]{display:none}

/* ---- verdict ---- */
.ovl-verdict{padding:15px 20px;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--bg);margin-bottom:16px}
.ovl-verdict-eyebrow{display:block;font-size:11.5px;font-weight:700;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin-bottom:4px}
.ovl-verdict-headline{font-size:19px;line-height:1.28;color:var(--navy);margin:0 0 6px}
.ovl-verdict-support{margin:0;font-size:14.5px;color:var(--ink);line-height:1.5}
.ovl-verdict-badge{display:inline-flex;align-items:center;gap:6px;margin-top:2px;padding:7px 14px;border-radius:999px;font-size:13px;font-weight:700}
.ovl-verdict-badge-positive{background:#E4F5EE;color:#166B4E;border:1px solid #B6E3D0}

.ovl-verdict-amber{background:#FCF6EA;border-color:#EFD7AE}
.ovl-verdict-amber .ovl-verdict-eyebrow{color:#9A7215}
.ovl-verdict-amber .ovl-verdict-headline{color:#7A5510}

.ovl-verdict-teal{background:#EAF7F5;border-color:#BFE3DC}
.ovl-verdict-teal .ovl-verdict-eyebrow{color:var(--teal)}
.ovl-verdict-teal .ovl-verdict-headline{color:#0F5C51}

.ovl-verdict-neutral{background:#EAF1FE;border-color:#BFD3F7}
.ovl-verdict-neutral .ovl-verdict-eyebrow{color:#1D4FC4}
.ovl-verdict-neutral .ovl-verdict-headline{color:var(--navy)}

.ovl-verdict-calm{background:var(--white);border-color:var(--border)}
.ovl-verdict-calm .ovl-verdict-eyebrow{color:var(--muted)}
.ovl-verdict-calm .ovl-verdict-headline{color:var(--navy)}

/* ---- 4 adaptive metrics ---- */
.ovl-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:22px}
.ovl-metric{padding:14px 16px;border-right:1px solid var(--border);background:var(--white);display:flex;flex-direction:column;gap:6px}
.ovl-metric:last-child{border-right:0}
.ovl-metric-label{font-size:11px;color:var(--muted);font-weight:700;text-transform:uppercase;letter-spacing:.03em}
.ovl-metric-value{font:700 17px var(--font-mono);color:var(--navy);word-break:break-word}

/* ---- adjacent / disjoint visual variants ---- */
/* O2: segment fills darkened so white 12px CIDR text clears WCAG AA (was
   var(--teal) ~3.1:1 and #8B94A3 ~2.5:1). Same hues, calmer, not louder. */
.ovl-seg-adjacent{background:#0F5C51}
.ovl-seg-disjoint{background:var(--muted)}
.ovl-visual-note{margin:8px 0 0;font-size:12px;color:var(--muted)}

/* O2: scale honesty tag near the relationship map */
.ovl-scale-tag{display:inline-flex;align-items:center;gap:7px;margin-top:12px;padding:5px 12px;border-radius:999px;font-size:11.5px;font-weight:700;letter-spacing:.02em}
.ovl-scale-tag::before{content:"";width:6px;height:6px;border-radius:50%;flex:none}
.ovl-scale-tag-true{background:#EAF1FE;color:#1D4FC4;border:1px solid #BFD3F7}
.ovl-scale-tag-true::before{background:#1D4FC4}
.ovl-scale-tag-approx{background:var(--bg);color:var(--muted);border:1px solid var(--border)}
.ovl-scale-tag-approx::before{background:var(--muted)}

/* ---- shared / gap / merge card ---- */
.ovl-shared-card{margin-top:22px;padding:20px;border:1px solid var(--border);border-radius:var(--radius-sm);background:var(--white)}
.ovl-shared-card[hidden]{display:none}
.ovl-card-cidr{font:700 16px var(--font-mono);color:var(--navy);margin:0 0 14px;word-break:break-all}
.ovl-card-actions{margin-top:16px}
.ovl-gap-cidr-list{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 4px}
.ovl-gap-cidr-chip{font:600 13px var(--font-mono);background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:6px 12px;color:var(--ink)}

/* ---- what this means ---- */
.ovl-meaning{margin-top:22px;padding:18px 20px;border-radius:var(--radius-sm);background:var(--bg);border:1px solid var(--border)}
.ovl-meaning[hidden]{display:none}
.ovl-meaning p{margin:0;font-size:14.5px;color:var(--ink);line-height:1.6}

/* ---- show why / prefix comparison disclosures ---- */
.ovl-disclosure{margin-top:14px;border:1px solid var(--border);border-radius:var(--radius-sm);padding:4px 18px;background:var(--white)}
.ovl-disclosure[hidden]{display:none}
.ovl-disclosure summary{padding:12px 0;font-weight:700;font-size:13.5px;color:var(--blue);cursor:pointer;list-style:none}
.ovl-disclosure summary::-webkit-details-marker{display:none}
.ovl-disclosure summary::before{content:"+ ";font-weight:700}
.ovl-disclosure[open] summary::before{content:"\2212 "}
.ovl-disclosure-body{padding:2px 0 16px;font-size:13.5px;color:var(--ink);line-height:1.6}

.ovl-prefix-row{display:flex;align-items:center;gap:12px;margin-bottom:10px}
.ovl-prefix-row-label{flex:none;width:52px;font:700 12px var(--font-mono);color:var(--muted)}
.ovl-prefix-bits{display:flex;flex-wrap:wrap;gap:1px;font-family:var(--font-mono);font-size:12px}
.ovl-bit{display:inline-flex;align-items:center;justify-content:center;width:16px;height:20px;border-radius:2px;font-weight:700}
.ovl-bit-shared{background:#1D4FC4;color:var(--white)}
.ovl-bit-own{background:#BFD3F7;color:var(--navy)}
.ovl-bit-host{background:var(--bg);color:var(--muted);border:1px solid var(--border)}
.ovl-prefix-legend{display:flex;flex-wrap:wrap;gap:14px;margin-top:10px;font-size:12px;color:var(--muted)}
.ovl-prefix-legend span{display:inline-flex;align-items:center;gap:6px}
.ovl-prefix-legend i{width:12px;height:12px;border-radius:3px;display:inline-block}
.ovl-prefix-legend i.ovl-bit-shared{width:12px;height:12px}
.ovl-prefix-legend i.ovl-bit-own{width:12px;height:12px}
.ovl-prefix-legend i.ovl-bit-host{width:12px;height:12px}

.ovl-network-addresses{font-size:12px;color:var(--muted);font-family:var(--font-mono)}

/* ---- plan status badge ---- */
.ovl-plan-status{display:inline-flex;align-items:center;padding:6px 14px;border-radius:999px;font-size:12.5px;font-weight:700}
.ovl-plan-status-ok{background:#E4F5EE;color:#166B4E;border:1px solid #B6E3D0}
.ovl-plan-status-review{background:#FCF6EA;color:#7A5510;border:1px solid #EFD7AE}

/* ---- conflict matrix ---- */
.ovl-matrix-section[hidden]{display:none}
.ovl-matrix-note{font-size:13.5px;color:var(--muted);padding:14px 16px;border:1px dashed var(--border);border-radius:var(--radius-sm);background:var(--bg);margin:0 0 16px}
.ovl-matrix-scroller{overflow-x:auto;border:1px solid var(--border);border-radius:10px;margin-bottom:12px}
.ovl-matrix-table{border-collapse:collapse;font-size:12.5px;min-width:100%}
.ovl-matrix-table th,.ovl-matrix-table td{border:1px solid var(--border);text-align:center;padding:0}
.ovl-matrix-table thead th{background:var(--navy);color:var(--white);font-size:11px;font-weight:700;padding:8px 6px;white-space:nowrap}
.ovl-matrix-table tbody th{background:var(--bg);color:var(--ink);font-size:11px;font-weight:700;padding:8px 10px;white-space:nowrap}
.ovl-matrix-cell{width:34px;height:34px;font:700 11px var(--font-mono);cursor:default}
.ovl-matrix-cell-self{background:repeating-linear-gradient(45deg,var(--border),var(--border) 3px,var(--white) 3px,var(--white) 7px)}
.ovl-matrix-cell-disjoint{background:var(--white);color:var(--border)}
.ovl-matrix-cell-duplicate{background:#EAF1FE;color:#1D4FC4;cursor:pointer}
.ovl-matrix-cell-a-contains-b,.ovl-matrix-cell-b-contains-a{background:#FCF6EA;color:#7A5510;cursor:pointer}
.ovl-matrix-cell-mergeable{background:#E4F5EE;color:#166B4E;cursor:pointer}
.ovl-matrix-cell-adjacent{background:#EAF7F5;color:#0F5C51;cursor:pointer}
.ovl-matrix-cell[role="button"]:hover,.ovl-matrix-cell[role="button"]:focus-visible{outline:2px solid var(--blue);outline-offset:-2px}
.ovl-matrix-legend{display:flex;flex-wrap:wrap;gap:14px;font-size:12px;color:var(--muted)}
.ovl-matrix-legend span{display:inline-flex;align-items:center;gap:6px}
.ovl-matrix-legend i{width:13px;height:13px;border-radius:3px;display:inline-block}
.ovl-matrix-legend i.ovl-matrix-cell-duplicate{background:#EAF1FE;border:1px solid #BFD3F7}
.ovl-matrix-legend i.ovl-matrix-cell-a-contains-b{background:#FCF6EA;border:1px solid #EFD7AE}
.ovl-matrix-legend i.ovl-matrix-cell-mergeable{background:#E4F5EE;border:1px solid #B6E3D0}
.ovl-matrix-legend i.ovl-matrix-cell-adjacent{background:#EAF7F5;border:1px solid #BFE3DC}
.ovl-matrix-legend i.ovl-matrix-cell-disjoint{background:var(--white);border:1px solid var(--border)}
.ovl-matrix-legend i.ovl-matrix-cell-self{background:repeating-linear-gradient(45deg,var(--border),var(--border) 2px,var(--white) 2px,var(--white) 4px);border:1px solid var(--border)}

/* ---- CIDR hierarchy tree ---- */
.ovl-hierarchy-section[hidden]{display:none}
.ovl-tree-root,.ovl-tree-children{list-style:none;margin:0;padding:0}
.ovl-tree-children{margin-left:22px;padding-left:16px;border-left:1px dashed var(--border);margin-top:4px}
.ovl-tree-root > li,.ovl-tree-children > li{margin:4px 0}
.ovl-tree-node{font:600 13px var(--font-mono);background:var(--white);border:1px solid var(--border);border-radius:8px;padding:7px 13px;color:var(--ink);cursor:pointer;text-align:left}
.ovl-tree-node:hover,.ovl-tree-node:focus-visible{border-color:var(--blue);color:var(--blue);background:#EAF1FE}

/* ---- findings filter bar ---- */
.ovl-filter-bar{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:14px}
.ovl-filter-btn{padding:8px 16px;border-radius:999px;border:1px solid var(--border);background:var(--white);color:var(--muted);font-size:12.5px;font-weight:700;cursor:pointer}
.ovl-filter-btn:hover,.ovl-filter-btn:focus-visible{border-color:var(--blue);color:var(--blue)}
.ovl-filter-btn.is-active{background:var(--navy);border-color:var(--navy);color:var(--white)}

/* ---- V2.1: relationship map — true-proportion segment, adaptive labels, external callout ---- */
.ovl-track-wrap{position:relative}
.ovl-seg-inner.ovl-seg-tiny{box-shadow:0 0 0 1px rgba(255,255,255,.85)}
.ovl-seg-inner.ovl-seg-medium{font-size:11px;padding:0 4px}

/* V2.1 visual fix: the callout now lives in its own normal-flow lane *above* the track,
   with height reserved from the callout's real rendered size (measured in JS) rather than
   a fixed padding guess — so nothing below it (legend, "1 of N blocks" line) can ever be
   overlapped. An SVG connector bridges the (possibly clamped) callout box to the true,
   never-clamped data position. */
.ovl-callout-lane{position:relative;margin-bottom:8px}
.ovl-callout-connector{position:absolute;inset:0;pointer-events:none;overflow:visible}
.ovl-callout-connector-line{stroke:var(--border);stroke-width:1.5}
.ovl-callout-connector-dot{fill:var(--blue)}
.ovl-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}
.ovl-callout:hover,.ovl-callout:focus-visible{border-color:var(--blue)}
.ovl-callout:focus-visible{outline:3px solid var(--blue);outline-offset:2px}
.ovl-callout-line1{font:700 12.5px var(--font-mono);color:var(--navy);overflow:hidden;text-overflow:ellipsis}
.ovl-callout-line2{font-size:11.5px;color:var(--muted);font-weight:600}

.ovl-map-legend{display:flex;flex-wrap:wrap;gap:16px;margin-top:12px;font-size:12px;color:var(--muted)}
.ovl-map-legend span{display:inline-flex;align-items:center;gap:6px}
.ovl-map-legend i{width:12px;height:12px;border-radius:3px;display:inline-block}
.ovl-legend-outer{background:var(--navy)}
.ovl-legend-inner{background:var(--blue)}

.ovl-block-ratio-note{margin:12px 0 0;padding:11px 14px;font-size:13px;color:var(--ink);font-weight:600;background:var(--bg);border:1px solid var(--border);border-radius:var(--radius-sm)}
.ovl-block-ratio-note[hidden]{display:none}

/* ---- V2.1: duplicate visualization — one combined block, no stacked text collision ---- */
.ovl-dup-block{position:static;display:flex;width:100%;height:48px;background:var(--navy);border-radius:8px;font:700 13px var(--font-mono)}
.ovl-dup-chips{display:flex;gap:8px;margin-top:10px}
.ovl-chip{padding:6px 14px;border-radius:999px;border:1px solid var(--border);background:var(--white);color:var(--muted);font-size:12px;font-weight:700;cursor:pointer}
.ovl-chip:hover,.ovl-chip:focus-visible{border-color:var(--blue);color:var(--blue)}

/* ---- V2.1: clear button relocated alongside the primary actions, kept visually light ---- */
.ovl-clear-btn{margin-left:auto}
.ovl-clear-btn[hidden]{display:none}

/* ---- responsive ---- */
@media(max-width:1050px){
	.ovl-metrics{grid-template-columns:1fr 1fr}
	.ovl-metric{border-bottom:1px solid var(--border)}
	.ovl-metric:nth-child(2n){border-right:0}
}
@media(max-width:768px){
	.ovl-matrix-cell{width:30px;height:30px}
}
@media(max-width:620px){
	.ovl-metrics{grid-template-columns:1fr}
	.ovl-metric{ border-right:0!important;border-bottom:1px solid var(--border)}
	.ovl-metric:last-child{border-bottom:0}
	.ovl-verdict{padding:14px 16px}
	.ovl-verdict-headline{font-size:17px}
	.ovl-filter-bar{gap:6px}
	.ovl-filter-btn{padding:7px 12px;font-size:12px}
	.ovl-callout{font-size:11px;padding:7px 10px;max-width:calc(100vw - 32px)}
	.ovl-callout-line1{font-size:11.5px}
	.ovl-callout-line2{font-size:11px}
	.ovl-dup-chips{flex-wrap:wrap}
}

/* ==========================================================================
   Phase O2 — premium hardening + polish. Page-scoped, additive only.
   No global tokens, no new palette, no engine change.
   ========================================================================== */

/* O2-10: inline-style attributes lifted out of page-subnet-overlap-checker.php */
.vlsm-section-heading.is-spaced{margin-top:28px}
#ovl-inspector-actions{margin-top:12px}
.ovl-example-heading{font-size:17px;color:var(--navy);margin:24px 0 8px}
.subnet-guide.subnet-guide--examples{background:var(--white);padding-top:0}

/* O2.1: premium hero — capability row, benefit lead, trust row, static result-preview card */
.ovl-hero-caps{display:flex;flex-wrap:wrap;align-items:center;gap:8px 16px;margin:6px 0 18px}
.ovl-hero-cap{display:inline-flex;align-items:center;gap:7px;font-size:11.5px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;color:var(--muted)}
.ovl-hero-cap::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--teal);flex:none}
.ovl-hero-grid{display:grid;grid-template-columns:minmax(0,1fr) minmax(320px,440px);gap:44px;align-items:start}
.ovl-hero-benefit{margin:0 0 12px;font-size:clamp(17px,1.9vw,21px);font-weight:600;color:var(--ink);line-height:1.36;max-width:30ch}
.ovl-hero-cta{display:flex;flex-wrap:wrap;gap:10px;margin:2px 0 22px}
.ovl-hero-trust{display:flex;flex-wrap:wrap;gap:10px 24px;margin:0;padding-top:18px;border-top:1px solid var(--border)}
.ovl-hero-trust-item{display:inline-flex;align-items:center;gap:8px;font-size:12.5px;font-weight:600;color:var(--muted)}
.ovl-hero-trust-item::before{content:"\2713";color:var(--teal);font-weight:700;flex:none}
.ovl-hero-preview{display:flex;flex-direction:column;gap:15px;padding:20px;border:1px solid var(--border);border-radius:20px;background:var(--white);box-shadow:var(--shadow-md)}
.ovl-hero-preview-eyebrow{display:inline-flex;align-items:center;gap:7px;font-size:10.5px;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--muted)}
.ovl-hero-preview-dot{width:5px;height:5px;border-radius:50%;background:var(--teal);flex:none}
.ovl-hero-preview-nets{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.ovl-hero-preview-net{display:flex;flex-direction:column;gap:3px;min-width:0}
.ovl-hero-preview-net-label{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.03em;color:var(--muted)}
.ovl-hero-preview-net-cidr{font:700 13px var(--font-mono);color:var(--navy);overflow-wrap:anywhere}
.ovl-hero-preview-track{position:relative;height:44px;border-radius:9px;background:var(--navy);overflow:hidden;display:flex;align-items:center}
.ovl-hero-preview-outer{position:absolute;left:12px;font:700 11px var(--font-mono);color:rgba(255,255,255,.66)}
.ovl-hero-preview-inner{position:absolute;left:50%;right:0;top:0;bottom:0;background:var(--blue);border-radius:8px;display:flex;align-items:center;justify-content:center;font:700 11px var(--font-mono);color:var(--white)}
.ovl-hero-preview-verdict{display:flex;flex-direction:column;gap:6px}
.ovl-hero-preview-pill{align-self:flex-start;display:inline-flex;align-items:center;gap:6px;padding:5px 11px;border-radius:999px;font-size:10.5px;font-weight:700;letter-spacing:.03em;text-transform:uppercase;background:#FCF6EA;color:#7A5510;border:1px solid #EFD7AE}
.ovl-hero-preview-pill::before{content:"";width:5px;height:5px;border-radius:50%;background:var(--amber);flex:none}
.ovl-hero-preview-headline{margin:0;font-size:14.5px;font-weight:700;color:var(--navy);line-height:1.3}
.ovl-hero-preview-metrics{display:grid;grid-template-columns:1fr 1fr;gap:12px;padding-top:14px;border-top:1px solid var(--border)}
.ovl-hero-preview-metric{display:flex;flex-direction:column;gap:3px}
.ovl-hero-preview-metric-label{font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.03em;color:var(--muted)}
.ovl-hero-preview-metric-value{font:700 14px var(--font-mono);color:var(--navy)}

/* O2-11: mode hint — makes "analyze an address plan" a headline capability */
.ovl-mode-hint{margin:10px 0 0;font-size:12.5px;color:var(--muted);line-height:1.5;max-width:62ch}

/* O2-7: list-mode per-line parse errors */
.ovl-line-errors{margin-top:12px;padding:14px 16px;border:1px solid #F3C6C1;background:#FDF2F1;border-radius:var(--radius-sm)}
.ovl-line-errors[hidden]{display:none}
.ovl-line-errors-head{margin:0 0 8px;font-size:13.5px;font-weight:700;color:var(--red)}
.ovl-line-errors-list{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:6px}
.ovl-line-errors-list li{display:flex;gap:10px;font-size:13px;line-height:1.45}
.ovl-line-errors-num{flex:none;min-width:58px;font:700 12px var(--font-mono);color:var(--red)}
.ovl-line-errors-msg{color:var(--ink);overflow-wrap:anywhere}
.ovl-line-errors-more{margin:8px 0 0;font-size:12.5px;color:var(--muted)}
.ovl-line-errors-more[hidden]{display:none}

@media(max-width:960px){
	.ovl-hero-grid{grid-template-columns:1fr;gap:26px}
	.ovl-hero-preview{max-width:460px}
	.ovl-hero-benefit{max-width:none}
}
@media(max-width:620px){
	.ovl-hero-preview{max-width:none;padding:16px}
}
@media(prefers-reduced-motion:reduce){
	.ovl-scale-tag,.ovl-hero-preview{transition:none!important}
}