/* Roofing Directory — design system (light + dark via custom properties) */
*, *::before, *::after { box-sizing: border-box; }
:root {
  --bg: #F5F7F8; --surface: #FFFFFF; --surface-2: #EDF1F3;
  --ink: #15202A; --ink-2: #3E4B57; --muted: #697682;
  --line: #E1E6EA; --line-strong: #CDD5DB;
  --accent: #0E7C6B; --accent-2: #0B6154; --accent-soft: rgba(14,124,107,0.10);
  --warn: #B26B00;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Code", "SFMono-Regular", Consolas, monospace;
  --shadow: 0 1px 2px rgba(20,32,42,.05), 0 6px 20px rgba(20,32,42,.06);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0F141A; --surface: #161D25; --surface-2: #1C2530;
    --ink: #E9EEF2; --ink-2: #BAC5CE; --muted: #8593A0; --line: #263039; --line-strong: #35414C;
    --accent: #35B4A1; --accent-2: #4CC7B5; --accent-soft: rgba(53,180,161,0.15);
    --warn: #D69A3C;
    --shadow: 0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.3);
  }
}
:root[data-theme="light"] {
  --bg:#F5F7F8; --surface:#FFFFFF; --surface-2:#EDF1F3; --ink:#15202A; --ink-2:#3E4B57;
  --muted:#697682; --line:#E1E6EA; --line-strong:#CDD5DB; --accent:#0E7C6B; --accent-2:#0B6154; --accent-soft:rgba(14,124,107,0.10); --warn:#B26B00;
  --shadow:0 1px 2px rgba(20,32,42,.05), 0 6px 20px rgba(20,32,42,.06);
}
:root[data-theme="dark"] {
  --bg:#0F141A; --surface:#161D25; --surface-2:#1C2530; --ink:#E9EEF2; --ink-2:#BAC5CE;
  --muted:#8593A0; --line:#263039; --line-strong:#35414C; --accent:#35B4A1; --accent-2:#4CC7B5; --accent-soft:rgba(53,180,161,0.15); --warn:#D69A3C;
  --shadow:0 1px 2px rgba(0,0,0,.3), 0 8px 24px rgba(0,0,0,.3);
}

html, body { margin: 0; padding: 0; }
body { background: var(--bg); color: var(--ink); font-family: var(--sans); line-height: 1.5; -webkit-font-smoothing: antialiased; }
.app { min-height: 100vh; display: flex; flex-direction: column; }
.wrap { width: 100%; max-width: 1020px; margin: 0 auto; padding: 0 22px; }
main.wrap { flex: 1 0 auto; }
a { color: inherit; text-decoration: none; }
a:focus-visible, button:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; border-radius: 4px; }
img { max-width: 100%; height: auto; }

/* header */
.hd { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--bg) 88%, transparent); backdrop-filter: blur(8px); border-bottom: 1px solid var(--line); }
.hd .wrap { display: flex; align-items: center; gap: 16px; height: 58px; }
.brand { display: flex; align-items: center; gap: 9px; font-weight: 700; letter-spacing: -0.01em; font-size: 15px; white-space: nowrap; color: var(--ink); }
.brand .glyph { width: 22px; height: 22px; color: var(--accent); flex: none; }
.hd .search { flex: 1; max-width: 420px; display: flex; align-items: center; gap: 8px; background: var(--surface); border: 1px solid var(--line-strong); border-radius: 8px; padding: 7px 11px; color: var(--muted); font-size: 13.5px; cursor: text; font-family: inherit; text-align: left; }
.hd .search:hover { border-color: var(--accent); }
.hd .search svg { width: 15px; height: 15px; flex: none; }
.hd .search .k { margin-left: auto; font-family: var(--mono); font-size: 11px; border: 1px solid var(--line-strong); border-radius: 5px; padding: 1px 6px; }
.hd nav { display: flex; gap: 16px; font-size: 13px; color: var(--muted); }
.hd nav a:hover, .hd nav a.active { color: var(--ink); }
.hd nav a.active { color: var(--accent); }
.theme-toggle { display: inline-flex; align-items: center; justify-content: center; width: 34px; height: 34px; border: 1px solid var(--line-strong); border-radius: 8px; background: var(--surface); color: var(--ink-2); cursor: pointer; flex: none; }
.theme-toggle:hover { border-color: var(--accent); color: var(--accent); }
.theme-toggle svg { width: 16px; height: 16px; }
.theme-toggle .sun { display: none; }
:root[data-theme="dark"] .theme-toggle .sun { display: block; }
:root[data-theme="dark"] .theme-toggle .moon { display: none; }
@media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .theme-toggle .sun { display: block; } :root:not([data-theme="light"]) .theme-toggle .moon { display: none; } }
@media (max-width: 820px) { .hd nav { display: none; } }
@media (max-width: 560px) { .hd .search .label { display: none; } .hd .search { max-width: 44px; justify-content: center; } .hd .search .k { display: none; } }

/* hero */
.hero { padding: 54px 0 30px; }
.kicker { font-family: var(--mono); font-size: 12px; letter-spacing: 0.14em; text-transform: uppercase; color: var(--accent); margin: 0 0 14px; }
.hero h1 { font-size: clamp(30px, 5vw, 46px); line-height: 1.06; letter-spacing: -0.02em; margin: 0 0 14px; max-width: 20ch; text-wrap: balance; font-weight: 700; }
.hero p.sub { font-size: 17px; color: var(--ink-2); max-width: 58ch; margin: 0 0 26px; }
.bigsearch { display: flex; align-items: center; gap: 10px; background: var(--surface); border: 1.5px solid var(--line-strong); border-radius: 12px; padding: 14px 16px; box-shadow: var(--shadow); max-width: 560px; cursor: text; }
.bigsearch:hover { border-color: var(--accent); }
.bigsearch svg { width: 20px; height: 20px; color: var(--muted); flex: none; }
.bigsearch input { border: 0; background: transparent; font: inherit; font-size: 16px; color: var(--ink); width: 100%; outline: none; }
.bigsearch .k { font-family: var(--mono); font-size: 11px; color: var(--muted); border: 1px solid var(--line-strong); border-radius: 5px; padding: 2px 6px; flex: none; }
.trust { display: flex; gap: 8px; align-items: center; margin-top: 14px; font-size: 13px; color: var(--muted); font-family: var(--mono); flex-wrap: wrap; }
.trust b { color: var(--accent); }
.trust svg { flex: none; }

/* category tiles */
.cats { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; padding: 8px 0; list-style: none; margin: 0; }
@media (max-width: 720px) { .cats { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 440px) { .cats { grid-template-columns: 1fr; } }
.cat { display: flex; align-items: center; justify-content: space-between; gap: 10px; background: var(--surface); border: 1px solid var(--line); border-radius: 11px; padding: 15px 16px; transition: border-color .16s, transform .16s; }
.cat:hover { border-color: var(--accent); transform: translateY(-2px); }
.cat .n { font-weight: 600; font-size: 15px; }
.cat .c { font-family: var(--mono); font-size: 13px; color: var(--accent); font-variant-numeric: tabular-nums; }
.cat .d { font-size: 12.5px; color: var(--muted); margin-top: 2px; }

/* sections + entity cards */
.sect { padding: 34px 0 6px; }
.sect h2 { font-size: 14px; font-family: var(--mono); letter-spacing: 0.06em; text-transform: uppercase; color: var(--muted); margin: 0 0 14px; }
.feat { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; list-style: none; margin: 0; padding: 0; }
@media (max-width: 620px) { .feat { grid-template-columns: 1fr; } }
.ecard { display: block; background: var(--surface); border: 1px solid var(--line); border-radius: 11px; padding: 15px 16px; transition: border-color .16s, transform .16s; }
.ecard:hover { border-color: var(--accent); transform: translateY(-1px); }
.ecard .top { display: flex; align-items: center; gap: 8px; margin-bottom: 7px; }
.type { font-family: var(--mono); font-size: 10.5px; letter-spacing: 0.05em; text-transform: uppercase; color: var(--accent); background: var(--accent-soft); border-radius: 5px; padding: 2px 7px; white-space: nowrap; }
.ecard h3 { font-size: 16px; margin: 0; font-weight: 600; letter-spacing: -0.01em; color: var(--ink); }
.ecard p { font-size: 13.5px; color: var(--ink-2); margin: 4px 0 0; }

.divider { display: flex; align-items: center; gap: 14px; margin: 48px 0 8px; color: var(--muted); font-family: var(--mono); font-size: 12px; letter-spacing: 0.08em; text-transform: uppercase; }
.divider::before, .divider::after { content: ""; height: 1px; background: var(--line-strong); flex: 1; }

/* listing page */
.pagehead { padding: 40px 0 4px; }
.pagehead .crumb { margin-bottom: 14px; }
.pagehead h1 { font-size: clamp(26px, 4vw, 36px); letter-spacing: -0.02em; margin: 0 0 10px; font-weight: 700; }
.pagehead p.lead { font-size: 16px; color: var(--ink-2); max-width: 66ch; margin: 0; }
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px; list-style: none; margin: 22px 0 40px; padding: 0; }
@media (max-width: 620px) { .grid { grid-template-columns: 1fr; } }

/* detail page */
.detail { background: var(--surface); border: 1px solid var(--line); border-radius: 16px; box-shadow: var(--shadow); overflow: hidden; margin: 28px 0 40px; }
.detail .body { padding: 26px 28px 30px; }
@media (max-width: 520px) { .detail .body { padding: 20px 18px 24px; } }
.crumb { font-family: var(--mono); font-size: 12px; color: var(--muted); margin: 0 0 16px; }
.crumb a { color: var(--accent); }
.crumb a:hover { text-decoration: underline; }
.detail .htop { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.detail h1 { font-size: clamp(24px, 4vw, 32px); letter-spacing: -0.02em; margin: 0; font-weight: 700; }
.badge { font-family: var(--mono); font-size: 11px; letter-spacing: 0.05em; text-transform: uppercase; padding: 3px 9px; border-radius: 999px; border: 1px solid var(--accent); color: var(--accent); background: var(--accent-soft); display: inline-flex; align-items: center; gap: 6px; }
.badge .d { width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.lede { font-size: 16px; color: var(--ink-2); margin: 16px 0 22px; max-width: 68ch; }

.grid2 { display: grid; grid-template-columns: 1.3fr 1fr; gap: 26px; align-items: start; }
@media (max-width: 700px) { .grid2 { grid-template-columns: 1fr; gap: 18px; } }

/* spec table */
.specs { border: 1px solid var(--line); border-radius: 12px; overflow: hidden; }
.specs .row { display: grid; grid-template-columns: 40% 1fr; gap: 10px; padding: 11px 14px; border-top: 1px solid var(--line); font-size: 13.5px; }
.specs .row:first-child { border-top: 0; }
.specs .k { color: var(--muted); font-family: var(--mono); font-size: 12px; }
.specs .v { color: var(--ink); }
.specs .v code { font-family: var(--mono); font-size: 12.5px; background: var(--surface-2); padding: 1px 6px; border-radius: 4px; }
.specs .v a { color: var(--accent); }
.specs .v a:hover { text-decoration: underline; }
.specs .v ul { margin: 0; padding-left: 18px; }
.specs .v li { margin: 1px 0; }

.panel { margin-bottom: 8px; }
.panel h4 { font-family: var(--mono); font-size: 11px; letter-spacing: 0.07em; text-transform: uppercase; color: var(--muted); margin: 0 0 10px; }
.section-label { font-family: var(--mono); font-size: 11px; letter-spacing: 0.07em; text-transform: uppercase; color: var(--muted); margin: 0 0 10px; }
.chips { display: flex; flex-wrap: wrap; gap: 7px; margin-bottom: 22px; }
.chip { font-size: 13px; padding: 5px 11px; border-radius: 999px; border: 1px solid var(--line-strong); color: var(--ink-2); transition: border-color .15s, color .15s; }
.chip:hover { border-color: var(--accent); color: var(--accent); }
.rel { display: flex; flex-direction: column; gap: 8px; margin-bottom: 22px; }
.rel a { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 10px 12px; border: 1px solid var(--line); border-radius: 9px; font-size: 13.5px; transition: border-color .15s; }
.rel a:hover { border-color: var(--accent); }
.rel .mfr { color: var(--muted); font-size: 12px; font-family: var(--mono); white-space: nowrap; }

/* sources / provenance block */
.sources { margin-top: 26px; border-top: 1px solid var(--line); padding-top: 18px; }
.sources h4 { font-family: var(--mono); font-size: 11px; letter-spacing: 0.07em; text-transform: uppercase; color: var(--accent); margin: 0 0 12px; display: flex; align-items: center; gap: 8px; }
.sources ul { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 9px; }
.sources li { display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: baseline; font-size: 13px; }
.sources .src { color: var(--accent); }
.sources .src:hover { text-decoration: underline; }
.sources .date { font-family: var(--mono); font-size: 11.5px; color: var(--muted); }
.sources .verified { font-family: var(--mono); font-size: 10.5px; color: var(--accent); border: 1px solid color-mix(in srgb, var(--accent) 35%, transparent); border-radius: 4px; padding: 0 6px; }

/* editorial guides — prose */
.detail.guide .lede, .detail.glossary .lede { margin-bottom: 8px; }
.prose-sect { margin-top: 26px; }
.prose-sect h2 { font-size: 20px; letter-spacing: -0.01em; margin: 0 0 10px; font-weight: 700; }
.prose-sect p { font-size: 15px; color: var(--ink-2); margin: 0 0 12px; max-width: 72ch; }
.prose-sect ul { margin: 0 0 12px; padding-left: 20px; max-width: 72ch; }
.prose-sect li { font-size: 15px; color: var(--ink-2); margin: 5px 0; }
.prose-sect a { color: var(--accent); }
.prose-sect a:hover { text-decoration: underline; }
.prose-sect strong { color: var(--ink); }
.prose-sect code { font-family: var(--mono); font-size: 12.5px; background: var(--surface-2); padding: 1px 6px; border-radius: 4px; }

/* editorial guides — FAQ */
.faq { margin-top: 32px; border-top: 1px solid var(--line); padding-top: 20px; }
.faq > h2 { font-size: 20px; letter-spacing: -0.01em; margin: 0 0 16px; font-weight: 700; }
.faq-item { margin: 0 0 16px; }
.faq-item h3 { font-size: 15.5px; margin: 0 0 5px; font-weight: 600; color: var(--ink); }
.faq-item p { font-size: 14.5px; color: var(--ink-2); margin: 0; max-width: 74ch; }

.guide-related { margin-top: 30px; }

/* glossary */
.glossary-list { margin: 20px 0 0; padding: 0; display: grid; grid-template-columns: 1fr 1fr; gap: 14px; }
@media (max-width: 680px) { .glossary-list { grid-template-columns: 1fr; } }
.gterm { border: 1px solid var(--line); border-radius: 11px; padding: 14px 16px; background: var(--surface-2); scroll-margin-top: 72px; }
.gterm dt { font-weight: 700; font-size: 15px; color: var(--ink); margin: 0 0 5px; }
.gterm dd { margin: 0; font-size: 13.5px; color: var(--ink-2); line-height: 1.5; }
.gterm dd a { color: var(--accent); }
.gterm:target { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-soft); }

/* B2B call-to-action panel + "claim this listing" affordance */
.cta-panel { margin-top: 30px; border: 1px solid var(--line-strong); background: var(--surface); border-radius: 12px; padding: 22px 24px; }
.cta-panel h2 { font-size: 18px; margin: 0 0 6px; font-weight: 700; letter-spacing: -0.01em; }
.cta-panel p { font-size: 14.5px; color: var(--ink-2); margin: 0 0 16px; max-width: 70ch; }
.cta-btn { display: inline-flex; align-items: center; gap: 8px; background: var(--accent); color: #fff; font-size: 14px; font-weight: 600; padding: 10px 18px; border-radius: 8px; }
.cta-btn:hover { background: var(--accent-2); }
.cta-note { display: block; margin-top: 12px; font-size: 12px; color: var(--muted); font-family: var(--mono); }
.claim { font-size: 13px; color: var(--ink-2); margin: 6px 0 0; line-height: 1.5; }
.claim a { color: var(--accent); }
.claim a:hover { text-decoration: underline; }

/* footer */
footer.ft { flex: none; border-top: 1px solid var(--line); margin-top: 40px; }
footer.ft .wrap { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px 16px; padding: 22px; font-family: var(--mono); font-size: 12px; color: var(--muted); }
footer.ft a { color: var(--accent); }
footer.ft nav { display: flex; flex-wrap: wrap; gap: 4px 10px; }

/* search overlay */
.search-overlay { position: fixed; inset: 0; z-index: 50; display: none; align-items: flex-start; justify-content: center; padding: 12vh 18px 18px; background: rgba(9,14,19,.45); backdrop-filter: blur(3px); }
.search-overlay.open { display: flex; }
.search-modal { width: 100%; max-width: 560px; background: var(--surface); border: 1px solid var(--line-strong); border-radius: 14px; box-shadow: var(--shadow); overflow: hidden; }
.search-modal .field { display: flex; align-items: center; gap: 10px; padding: 14px 16px; border-bottom: 1px solid var(--line); }
.search-modal .field svg { width: 18px; height: 18px; color: var(--muted); flex: none; }
.search-modal input { flex: 1; border: 0; background: transparent; font: inherit; font-size: 16px; color: var(--ink); outline: none; }
.search-modal .esc { font-family: var(--mono); font-size: 11px; color: var(--muted); border: 1px solid var(--line-strong); border-radius: 5px; padding: 2px 6px; }
.search-results { max-height: 52vh; overflow-y: auto; list-style: none; margin: 0; padding: 6px; }
.search-results li { margin: 0; }
.search-results a { display: flex; align-items: center; gap: 10px; padding: 9px 11px; border-radius: 9px; }
.search-results a:hover, .search-results a.active { background: var(--surface-2); }
.search-results .nm { font-size: 14px; color: var(--ink); }
.search-results .ty { margin-left: auto; }
.search-empty { padding: 18px 16px; color: var(--muted); font-size: 13.5px; }
.search-hint { padding: 10px 16px; color: var(--muted); font-size: 12px; font-family: var(--mono); border-top: 1px solid var(--line); }