/* roofing_calculator — tool-specific design (architectural blueprint). Shared: nav, footer, sidebars, ad script only. */
body[data-tool="roofing_calculator"] {
  --rf-bp: #123A63; --rf-bp2: #0E2F51; --rf-grid: rgba(255,255,255,.07); --rf-line: rgba(255,255,255,.22); --rf-w: #F4F8FC; --rf-w2: #B9CBE0;
  --rf-acc: #FFC857; --rf-paper: #F7F5F0; --rf-ink: #12202F; --rf-ink2: #46535F; --rf-mute: #7D8894; --rf-pl: #E2DED4;
  --rf-sans: Archivo, system-ui, -apple-system, "Segoe UI", sans-serif; --rf-mono: "Roboto Mono", ui-monospace, Menlo, monospace;
  background: var(--rf-paper); color: var(--rf-ink); font-family: var(--rf-sans);
}
body[data-tool="roofing_calculator"] .dt-nav { background: var(--rf-bp2); border-bottom: 1px solid rgba(255,255,255,.12); }
body[data-tool="roofing_calculator"] .dt-nav .navbar-brand, body[data-tool="roofing_calculator"] .dt-nav .nav-link { color: #fff; }
body[data-tool="roofing_calculator"] .dt-nav .nav-link:hover { background: rgba(255,255,255,.08); color: #fff; }
.dt-bare { display: block; width: 100%; flex: 1; }
.rf-band { background-color: var(--rf-bp); background-image: linear-gradient(var(--rf-grid) 1px, transparent 1px), linear-gradient(90deg, var(--rf-grid) 1px, transparent 1px), linear-gradient(rgba(255,255,255,.03) 1px, transparent 1px), linear-gradient(90deg, rgba(255,255,255,.03) 1px, transparent 1px); background-size: 120px 120px, 120px 120px, 24px 24px, 24px 24px; color: var(--rf-w); padding: 36px 20px 44px; }
.rf-hero, .rf { max-width: 1120px; margin: 0 auto; }
.rf-hero h1 { font-size: 48px; line-height: 1.05; font-weight: 800; letter-spacing: -.03em; margin: 0; color: #fff; }
.rf-hero p { margin: 12px 0 0; font-size: 18px; color: var(--rf-w2); max-width: 62ch; }

.rf { display: grid; grid-template-columns: minmax(0, 380px) minmax(0, 1fr); gap: 22px; margin-top: 28px; }
.rf-in { display: flex; flex-direction: column; gap: 16px; border: 1px solid var(--rf-line); border-radius: 6px; padding: 20px; background: rgba(14,47,81,.55); }
.rf-f { display: flex; flex-direction: column; gap: 6px; margin: 0; min-width: 0; }
.rf-l { font-family: var(--rf-mono); font-size: 11px; font-weight: 500; letter-spacing: .1em; text-transform: uppercase; color: var(--rf-w2); }
.rf-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.rf-in input[type="number"], .rf-in select { width: 100%; border: 1px solid var(--rf-line); border-radius: 4px; background: rgba(255,255,255,.06); color: #fff; font-family: var(--rf-mono); font-size: 16px; padding: 9px 10px; -moz-appearance: textfield; }
.rf-in select option { color: #12202F; }
.rf-in input::-webkit-outer-spin-button, .rf-in input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.rf-in input::placeholder { color: rgba(185,203,224,.55); }
.rf-in input:focus, .rf-in select:focus { outline: none; border-color: var(--rf-acc); box-shadow: 0 0 0 2px rgba(255,200,87,.25); }
.rf-seg { display: flex; border: 1px solid var(--rf-line); border-radius: 4px; overflow: hidden; }
.rf-seg button { flex: 1; border: 0; border-left: 1px solid var(--rf-line); background: transparent; color: var(--rf-w2); font: inherit; font-size: 14px; font-weight: 600; padding: 8px 6px; cursor: pointer; }
.rf-seg button:first-child { border-left: 0; }
.rf-seg button[aria-pressed="true"] { background: var(--rf-acc); color: var(--rf-bp2); }
.rf-seg button:focus-visible { outline: 2px solid #fff; outline-offset: -3px; }
.rf-chk { display: flex; align-items: center; gap: 8px; font-size: 15px; color: var(--rf-w); }
.rf-chk input { width: 18px; height: 18px; accent-color: var(--rf-acc); }
body[data-by="area"] .only-dims, body:not([data-by="area"]) .only-area { display: none; }

.rf-out { display: flex; flex-direction: column; gap: 14px; }
.rf-dia { position: relative; border: 1px dashed var(--rf-line); border-radius: 6px; padding: 8px 14px 2px; }
.rf-dia svg { width: 100%; max-width: 460px; height: auto; display: block; margin: 0 auto; font-family: var(--rf-mono); font-size: 11px; }
.rf-dia .roof { fill: none; stroke: var(--rf-acc); stroke-width: 4; stroke-linejoin: round; stroke-linecap: round; }
.rf-dia .wall { fill: none; stroke: var(--rf-w2); stroke-width: 1.5; }
.rf-dia .dim { stroke: #fff; stroke-width: 1; stroke-dasharray: 4 4; }
.rf-dia text { fill: var(--rf-w2); } .rf-dia text.big { fill: #fff; font-size: 18px; font-weight: 600; }
.rf-factor { position: absolute; right: 14px; top: 10px; font-family: var(--rf-mono); font-size: 13px; color: var(--rf-acc); }
.rf-res { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 0; border: 1px solid var(--rf-line); border-radius: 6px; }
.rf-res > div { padding: 14px 16px; border-left: 1px solid var(--rf-line); }
.rf-res > div:first-child { border-left: 0; }
.rf-res span { display: block; font-family: var(--rf-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--rf-w2); }
.rf-res b { display: block; margin-top: 6px; font-size: 32px; font-weight: 800; letter-spacing: -.02em; color: #fff; font-variant-numeric: tabular-nums; }
.rf-res small { display: block; margin-top: 2px; font-size: 12px; color: var(--rf-w2); }
.rf-res .rf-cost { grid-column: 1 / -1; border-left: 0; border-top: 1px solid var(--rf-line); background: rgba(255,200,87,.1); }
.rf-res .rf-cost b { color: var(--rf-acc); font-size: 34px; }
.rf-extra { margin: 0; font-size: 14px; color: var(--rf-w2); } .rf-extra b { color: #fff; }

.rf-tbl { grid-column: 1 / -1; background: var(--rf-w); color: var(--rf-ink); border-radius: 6px; padding: 18px 20px 8px; }
.rf-th { margin: 0 0 8px; font-size: 18px; font-weight: 800; letter-spacing: -.01em; }
.rf-scroll { overflow-x: auto; }
.rf-tbl table { width: 100%; border-collapse: collapse; font-size: 15px; }
.rf-tbl th { text-align: left; font-family: var(--rf-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--rf-mute); padding: 8px 10px; border-bottom: 2px solid var(--rf-ink); white-space: nowrap; }
.rf-tbl td { padding: 9px 10px; border-bottom: 1px solid #E3E8EE; white-space: nowrap; font-variant-numeric: tabular-nums; }
.rf-tbl tbody tr { cursor: pointer; }
.rf-tbl tbody tr:hover { background: #EDF3F9; }
.rf-tbl tr.on td { background: #FFF4D6; font-weight: 700; }
.rf-tbl tr.on td:first-child { box-shadow: inset 4px 0 0 var(--rf-acc); }

.rf-paper { padding: 0 20px 64px; }
.rf-adwrap { max-width: 1120px; margin: 36px auto 8px; }
.rf-article, .rf-faq, .rf-more { max-width: 740px; margin: 0 auto; }
.rf-article { margin-top: 40px; font-size: 17px; line-height: 1.75; color: var(--rf-ink2); }
.rf-article h2, .rf-faq h2, .rf-more h2 { font-size: 28px; line-height: 1.25; font-weight: 800; letter-spacing: -.02em; color: var(--rf-ink); margin: 50px 0 12px; }
.rf-article h2:first-child { margin-top: 0; }
.rf-article p { margin: 0 0 14px; } .rf-article b { color: var(--rf-ink); } .rf-article a { color: var(--rf-bp); }
.rf-article ul { padding-left: 1.2em; } .rf-article li { margin: 6px 0; }
.rf-eq { font-family: var(--rf-mono); font-size: 14px; background: #fff; border: 1px solid var(--rf-pl); border-left: 4px solid var(--rf-bp); padding: 12px 14px; color: var(--rf-ink); border-radius: 4px; }
.rf-table { overflow-x: auto; margin: 16px 0; background: #fff; border: 1px solid var(--rf-pl); border-radius: 6px; }
.rf-table table { width: 100%; border-collapse: collapse; font-size: 15px; }
.rf-table th { text-align: left; font-family: var(--rf-mono); font-size: 11px; letter-spacing: .08em; text-transform: uppercase; color: var(--rf-mute); padding: 10px 12px; border-bottom: 2px solid var(--rf-ink); }
.rf-table td { padding: 9px 12px; border-bottom: 1px solid #EEEBE4; color: var(--rf-ink); font-variant-numeric: tabular-nums; }
.rf-table tr:last-child td { border-bottom: 0; }
.rf-narrow { max-width: 460px; }
.rf-src { font-size: 15px; }
.rf-q { border-bottom: 1px solid var(--rf-pl); }
.rf-q summary { list-style: none; cursor: pointer; padding: 16px 32px 16px 0; position: relative; font-size: 18px; font-weight: 700; }
.rf-q summary::-webkit-details-marker { display: none; }
.rf-q summary::after { content: "+"; position: absolute; right: 4px; top: 12px; font-size: 24px; font-weight: 400; color: var(--rf-mute); }
.rf-q[open] summary::after { content: "\2212"; }
.rf-q p { margin: 0 0 18px; font-size: 17px; line-height: 1.7; color: var(--rf-ink2); }
.rf-more > div { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
.rf-more a { display: block; text-decoration: none; padding: 14px 16px; border: 1px solid var(--rf-pl); border-radius: 6px; background: #fff; color: var(--rf-ink); }
.rf-more a:hover { border-color: var(--rf-bp); }
.rf-more b { display: block; font-size: 15px; } .rf-more span { display: block; font-size: 13px; color: var(--rf-mute); margin-top: 2px; }

@media (max-width: 900px) {
  .rf { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 640px) {
  .rf-band { padding: 24px 14px 32px; }
  .rf-hero h1 { font-size: 36px; } .rf-hero p { font-size: 16px; }
  .rf-in { padding: 16px 14px; }
  .rf-res { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rf-res > div:nth-child(3) { border-left: 0; border-top: 1px solid var(--rf-line); grid-column: 1 / -1; }
  .rf-res b { font-size: 26px; } .rf-res .rf-cost b { font-size: 26px; }
  .rf-tbl { padding: 14px 12px 6px; }
  .rf-paper { padding: 0 14px 48px; }
  .rf-article { font-size: 16px; }
  .rf-article h2, .rf-faq h2, .rf-more h2 { font-size: 23px; margin-top: 40px; }
  .rf-more > div { grid-template-columns: minmax(0, 1fr); }
}
.rf-in select#rf_mat { font-family: var(--rf-sans); font-size: 14px; }