/* site.css — roofingmaterialcalc.com shared theme
   Self-host Inter + JetBrains Mono from /assets/fonts in production. */
:root{
  --ink:#1b1d21;--ink-2:#3a3d44;--slate:#5b6068;--line:#d9d6cf;
  --paper:#f6f4ef;--card:#fff;--accent:#b5471f;--accent-ink:#7a2f14;
  --good:#2f6f4f;--grid:#ece9e2;--shadow:0 1px 0 rgba(27,29,33,.04);
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);
  font-family:'Inter',system-ui,sans-serif;line-height:1.6;font-feature-settings:"cv11","ss01"}
.mono{font-family:'JetBrains Mono',ui-monospace,monospace;font-variant-numeric:tabular-nums}
a{color:var(--accent-ink);text-decoration:none}a:hover{text-decoration:underline}
.wrap{max-width:1080px;margin:0 auto;padding:0 22px}

/* top bar */
.bar{display:flex;align-items:center;justify-content:space-between;
  padding:8px 22px;border-bottom:1px solid var(--line);background:var(--card);position:sticky;top:0;z-index:20}
.brand{display:flex;align-items:center;gap:9px;font-weight:700;letter-spacing:-.01em;color:var(--ink)}
.brand:hover{text-decoration:none}
.brand .mark{width:22px;height:22px;border:2px solid var(--ink);position:relative;flex:none}
.brand .mark::before{content:"";position:absolute;inset:2px 2px auto 2px;height:2px;background:var(--accent)}
.brand .mark::after{content:"";position:absolute;left:50%;top:2px;bottom:2px;width:2px;background:var(--ink);transform:translateX(-50%)}
.brand b{font-size:14px;line-height:1.15}.brand span{color:var(--slate);font-weight:500;font-size:11px;line-height:1.1}
.nav{display:flex;gap:20px;font-size:14px;font-weight:500}.nav a{color:var(--ink-2)}
.hamb{display:none;border:1px solid var(--line);background:none;border-radius:6px;padding:6px 9px;cursor:pointer;font-size:16px}
@media(max-width:680px){.nav{display:none}.nav.open{display:flex;position:absolute;top:100%;right:22px;flex-direction:column;background:var(--card);border:1px solid var(--line);border-radius:8px;padding:10px 14px;gap:12px;box-shadow:0 6px 24px rgba(0,0,0,.08)}.hamb{display:block}}

/* hero */
.hero{padding:40px 0 8px}
.eyebrow{font-family:'JetBrains Mono',monospace;font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent-ink);font-weight:500}
.hero h1{font-size:clamp(28px,5vw,46px);line-height:1.06;letter-spacing:-.02em;margin:14px 0 12px;font-weight:700;max-width:17ch}
.hero p{font-size:17px;color:var(--ink-2);max-width:56ch;margin:0}
.why{margin-top:18px;display:flex;flex-wrap:wrap;gap:8px 18px;font-size:13.5px;color:var(--slate)}
.why b{color:var(--ink);font-weight:600}

/* panels */
.panel{background:var(--card);border:1px solid var(--line);border-radius:10px;box-shadow:var(--shadow)}
.panel-h{display:flex;align-items:baseline;justify-content:space-between;padding:14px 18px;border-bottom:1px solid var(--line)}
.panel-h h2{font-size:15px;margin:0;font-weight:600;letter-spacing:-.01em}
.panel-h .sub{font-size:12px;color:var(--slate)}
.panel-b{padding:16px 18px}

/* forms */
.f label{display:block;font-size:11px;color:var(--ink-2);margin-bottom:4px;font-weight:600}
.f input,.f select{width:100%;border:1.5px solid #b9b5ab;border-radius:6px;padding:9px;
  font-family:'JetBrains Mono',monospace;font-size:14px;font-weight:500;background:var(--card);color:var(--ink)}
.f input::placeholder{color:#9a968d}
.f input:focus,.f select:focus{outline:2px solid var(--accent);outline-offset:-1px;border-color:var(--accent)}

/* buttons */
.btn{border:1px solid var(--ink);background:var(--ink);color:#fff;border-radius:7px;padding:10px 14px;
  font-family:'Inter',sans-serif;font-weight:600;font-size:14px;cursor:pointer}
.btn:hover{background:#000;text-decoration:none}
.btn.ghost{background:none;color:var(--ink);border-color:var(--line)}
.btn.ghost:hover{background:var(--paper)}

/* take-off sheet */
.totals{display:grid;grid-template-columns:1fr 1fr;border-bottom:1px solid var(--line)}
.tot{padding:14px 18px}.tot:first-child{border-right:1px solid var(--line)}
.tot .k{font-size:11px;color:var(--slate);text-transform:uppercase;letter-spacing:.1em}
.tot .v{font-family:'JetBrains Mono',monospace;font-size:28px;font-weight:700;letter-spacing:-.02em;margin-top:2px}
.tot .v small{font-size:13px;color:var(--slate);font-weight:500}
.bom{width:100%;border-collapse:collapse}
.bom th{text-align:left;font-size:11px;color:var(--slate);text-transform:uppercase;letter-spacing:.08em;font-weight:600;padding:10px 18px;border-bottom:1px solid var(--line);background:var(--paper)}
.bom th.num{text-align:right}
.bom td{padding:10px 18px;border-bottom:1px solid var(--grid);font-size:14px}
.bom td.qty{font-family:'JetBrains Mono',monospace;text-align:right;font-weight:500}
.bom td .formula{display:block;font-size:11px;color:var(--slate);margin-top:1px}
.bom tr:last-child td{border-bottom:none}

/* prose (guides, methodology) */
.prose{max-width:70ch;margin:0;padding:8px 0 40px}
.prose h2{font-size:22px;letter-spacing:-.01em;margin:32px 0 10px}
.prose h3{font-size:17px;margin:24px 0 8px}
.prose p,.prose li{font-size:16px;color:var(--ink-2)}
.prose table{width:100%;border-collapse:collapse;margin:18px 0;font-size:14px}
.prose th,.prose td{text-align:left;padding:9px 12px;border-bottom:1px solid var(--grid)}
.prose th{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--slate);border-bottom-color:var(--line)}
.prose td.src{color:var(--slate);font-size:13px}
.callout{border:1px solid var(--line);border-left:3px solid var(--accent);border-radius:0 8px 8px 0;background:var(--card);padding:12px 16px;margin:18px 0;font-size:14.5px;color:var(--ink-2)}

/* card grid (calculator index, material tabs) */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:14px;padding:8px 0 30px}
.cardlink{display:block;background:var(--card);border:1px solid var(--line);border-radius:10px;padding:16px 18px;box-shadow:var(--shadow);color:var(--ink)}
.cardlink:hover{border-color:var(--accent);text-decoration:none}
.cardlink h3{margin:0 0 4px;font-size:15px}
.cardlink p{margin:0;font-size:13px;color:var(--slate)}

/* material tabs */
.tabs{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:14px}
.tab{border:1.5px solid var(--line);background:var(--card);border-radius:7px;padding:7px 12px;font-size:13px;font-weight:600;color:var(--ink-2);cursor:pointer}
.tab[aria-selected="true"]{border-color:var(--ink);background:var(--ink);color:#fff}
.tab .flag{font-weight:500;font-size:11px;color:var(--slate);margin-left:4px}
.tab[aria-selected="true"] .flag{color:#cfcac2}

/* footer */
footer{border-top:1px solid var(--line);background:var(--card)}
.foot{display:grid;grid-template-columns:repeat(6,1fr);gap:20px;padding:30px 0;font-size:13.5px}
@media(max-width:900px){.foot{grid-template-columns:repeat(3,1fr)}}
@media(max-width:680px){.foot{grid-template-columns:1fr 1fr}}
.foot h4{font-size:12px;text-transform:uppercase;letter-spacing:.08em;color:var(--slate);margin:0 0 10px}
.foot a{display:block;color:var(--ink-2);margin-bottom:6px}
.fine{padding:14px 0 26px;color:var(--slate);font-size:12px;border-top:1px solid var(--grid)}

/* section builder */
.sec{border:1px solid var(--grid);border-radius:8px;padding:12px;margin-bottom:12px;background:var(--paper);position:relative}
.sec .row{display:grid;grid-template-columns:auto 1fr;gap:8px 10px;align-items:center}
.sec .tag{font-family:'JetBrains Mono',monospace;font-size:11px;color:var(--slate);letter-spacing:.08em;text-transform:uppercase}
.sec .row select{border:1.5px solid #b9b5ab;border-radius:6px;padding:7px 9px;font-family:'Inter',sans-serif;font-size:14px;font-weight:500;background:var(--card);color:var(--ink)}
.sec .row select:focus{outline:2px solid var(--accent);outline-offset:-1px;border-color:var(--accent)}
.fields{display:grid;grid-template-columns:repeat(4,1fr);gap:8px;margin-top:10px}
@media(max-width:520px){.fields{grid-template-columns:repeat(2,1fr)}}
.del{position:absolute;top:8px;right:8px;border:none;background:none;color:var(--slate);cursor:pointer;font-size:18px;line-height:1;padding:2px 6px;border-radius:5px}
.del:hover{background:#f0d9cf;color:var(--accent-ink)}
.add{width:100%;border:1px dashed var(--line);background:none;border-radius:8px;padding:11px;font-family:'Inter',sans-serif;font-size:14px;font-weight:600;color:var(--ink-2);cursor:pointer}
.add:hover{border-color:var(--accent);color:var(--accent-ink)}
.controls{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}
.controls .f select,.controls .f input{font-family:'Inter',sans-serif}
.tool{display:grid;grid-template-columns:1.25fr 1fr;gap:22px;align-items:start;padding:24px 0 50px}
@media(max-width:880px){.tool{grid-template-columns:1fr}}
.note{font-size:12px;color:var(--slate);padding:0 18px 16px}
.actions{display:flex;gap:8px;padding:14px 18px;border-top:1px solid var(--line)}
.actions .btn{flex:1}

/* ============================================================
   calculator polish layer (visual enhancement, same aesthetic)
   ============================================================ */
:root{--ring:rgba(181,71,31,.16);--lift:0 2px 8px rgba(27,29,33,.06)}

/* smoother transitions across interactive elements */
.btn,.tab,.add,.del,.f input,.f select,.sec .row select,.cardlink{
  transition:background .15s ease,border-color .15s ease,color .15s ease,
             box-shadow .15s ease,transform .12s ease}

/* inputs: softer border + accent focus glow + custom dropdown arrow */
.f input,.f select,.sec .row select{border-color:#cbc7be;box-shadow:var(--shadow)}
.f input:hover,.f select:hover,.sec .row select:hover{border-color:var(--slate)}
.f input:focus,.f select:focus,.sec .row select:focus{
  outline:none;border-color:var(--accent);box-shadow:0 0 0 3px var(--ring)}
.f select,.sec .row select,.controls .f select{
  -webkit-appearance:none;appearance:none;padding-right:30px;cursor:pointer;
  background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1.5L6 6.5L11 1.5' stroke='%235b6068' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat:no-repeat;background-position:right 11px center}

/* buttons: gentle lift; primary action in accent */
.btn:hover{transform:translateY(-1px);box-shadow:var(--lift)}
.btn:active{transform:translateY(0);box-shadow:none}
.btn.primary,#pdf,#simplePdf{background:var(--accent);border-color:var(--accent);color:#fff}
.btn.primary:hover,#pdf:hover,#simplePdf:hover{background:var(--accent-ink);border-color:var(--accent-ink)}

/* tabs: hover lift + animated selected underline feel */
.tab:hover{border-color:var(--slate);transform:translateY(-1px)}
.tab[aria-selected="true"]{box-shadow:var(--lift)}
.tab[aria-selected="true"]:hover{transform:translateY(-1px);background:var(--ink)}

/* result band: lift the headline figures with a subtle accent ground */
.totals{background:linear-gradient(180deg,#fbfaf7,var(--card))}
.tot .v{color:var(--ink)}
.totals .tot:first-child .v{color:var(--accent-ink)}
.tot .v.flash{animation:rmcflash .4s ease}
@keyframes rmcflash{0%{background:var(--ring)}100%{background:transparent}}

/* live converter / simple-calc result box: accent left rule */
#conv .totals,#master .tot,.totals{border-radius:0}
#conv .totals{border:1px solid var(--line);border-radius:10px;position:relative;overflow:hidden}
#conv .totals::before,#master::before{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--accent)}
#master{position:relative}
#conv .v,#master .v{transition:color .15s ease}

/* section cards in the builder: hover emphasis + accent tag */
.sec{transition:border-color .15s ease,box-shadow .15s ease}
.sec:hover{border-color:#cbc7be;box-shadow:var(--shadow)}
.sec .tag{color:var(--accent-ink)}

/* BOM rows: subtle hover highlight so the take-off feels interactive */
.bom tbody tr{transition:background .12s ease}
.bom tbody tr:hover{background:#fbf7f4}
.bom td.qty{color:var(--ink);font-weight:600}

/* cardlink (family grids): hover lift */
.cardlink{transition:border-color .15s ease,box-shadow .15s ease,transform .12s ease}
.cardlink:hover{border-color:var(--accent);box-shadow:var(--lift);transform:translateY(-1px);text-decoration:none}

/* the add-section dashed button: friendlier hover fill */
.add:hover{background:#fbf3ef;transform:translateY(-1px)}

/* respect reduced motion */
@media(prefers-reduced-motion:reduce){
  *{transition:none !important;animation:none !important;transform:none !important}
}

/* bold solid outer border on all calculators */
.calc-panel{border:2px solid var(--ink);box-shadow:0 2px 10px rgba(27,29,33,.07)}
#conv .totals,#master{border:2px solid var(--ink)!important}
#conv .totals::before,#master::before{display:none}  /* drop the thin accent rule; the bold border now defines it */

/* unitcheatsheet.com reference banner on conversion pages */
.ucs-ref{display:flex;flex-wrap:wrap;align-items:center;gap:4px;margin:14px 0 4px;padding:10px 14px;
  background:#fbf3ef;border:1px solid #ecd9cf;border-left:3px solid var(--accent);border-radius:8px;
  font-size:13.5px;color:var(--ink-2)}
.ucs-ref a{color:var(--accent-ink);font-weight:600;white-space:nowrap}

/* unitcheatsheet.com cross-links: blue + underlined */
a.ucs-link{color:#1a56db;text-decoration:underline}
a.ucs-link:hover{color:#143fa3;text-decoration:underline}

/* ============================================================
   site-wide font-size lift (~1–2px on readable text)
   ============================================================ */
body{font-size:17px}                          /* base reading size 16 -> 17 */
.hero h1{font-size:clamp(32px,5.2vw,50px)}     /* lift hero floor + ceiling */
.hero p{font-size:18.5px}
.nav{font-size:15px}
.panel-h h2{font-size:16px}
.f label{font-size:12px}
.f input,.f select,.sec .row select{font-size:15px}
.btn{font-size:15px}
.tot .k{font-size:12px}
.tot .v{font-size:30px}
.tot .v small{font-size:14px}
.bom th{font-size:12px}
.bom td{font-size:15px}
.bom td .formula{font-size:12px}
.prose h2{font-size:24px}
.prose h3{font-size:18.5px}
.prose p,.prose li{font-size:17px;line-height:1.65}
.prose table{font-size:15px}
.prose td.src{font-size:14px}
.cardlink h3{font-size:16px}
.cardlink p{font-size:14px}
.foot{font-size:14.5px}
.note{font-size:13px}
.ucs-ref{font-size:14.5px}
.eyebrow{font-size:12.5px}

/* free-tools network cards */
.net-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:12px;margin:14px 0 26px}
.net-card{display:block;border:1px solid var(--line);border-radius:9px;padding:14px 16px;background:var(--card);
  box-shadow:var(--shadow);transition:border-color .15s ease,box-shadow .15s ease,transform .12s ease}
.net-card:hover{border-color:var(--accent);box-shadow:var(--lift);transform:translateY(-1px);text-decoration:none}
.net-url{display:block;color:#1a56db;font-weight:700;font-size:15px;text-decoration:underline;margin-bottom:5px;word-break:break-word}
.net-card:hover .net-url{color:#143fa3}
.net-desc{display:block;color:var(--ink-2);font-size:14px;line-height:1.5}

/* sticky footer: keep footer at viewport bottom on short pages */
body{display:flex;flex-direction:column;min-height:100vh}
body > main{flex:1 0 auto}
body > footer{flex-shrink:0}

/* complex-features expander (deductions + flashing) */
.complex{grid-column:1/-1;margin-top:6px;border:1px dashed var(--line);border-radius:8px;background:#fcfbf9}
.complex summary{cursor:pointer;padding:11px 14px;font-weight:600;font-size:14px;color:var(--ink);list-style:none}
.complex summary::-webkit-details-marker{display:none}
.complex summary::before{content:"+ ";color:var(--accent);font-weight:700}
.complex[open] summary::before{content:"– "}
.complex summary .hint{font-weight:400;color:var(--slate);font-size:12.5px;margin-left:4px}
.complex-body{padding:4px 14px 14px;display:grid;grid-template-columns:1fr 1fr;gap:18px}
.complex-grp h4{margin:6px 0 2px;font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--accent-ink)}
.complex-note{font-size:12px;color:var(--slate);margin:0 0 8px;line-height:1.45}
@media(max-width:620px){.complex-body{grid-template-columns:1fr}}

/* interactive pitch helper */
.ph-wrap{display:grid;grid-template-columns:1.1fr 1fr;gap:20px;align-items:center}
.ph-stage{background:var(--paper);border-radius:10px;padding:8px}
.ph-stage svg{width:100%;height:auto;display:block}
.ph-controls{display:flex;flex-direction:column;gap:12px}
.ph-label{font-size:13px;font-weight:600;color:var(--ink)}
#ph-slider{width:100%;accent-color:var(--accent);height:6px;cursor:pointer}
.ph-readout{display:flex;gap:10px}
.ph-fig{flex:1;border:1px solid var(--line);border-radius:8px;padding:8px 10px;text-align:center;background:var(--card)}
.ph-k{display:block;font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--slate);margin-bottom:3px}
.ph-v{font-size:20px;font-weight:700;color:var(--accent-ink)}
#ph-use{margin-top:2px}
.ph-howto{margin-top:16px;border:1px dashed var(--line);border-radius:8px;background:#fcfbf9}
.ph-howto summary{cursor:pointer;padding:11px 14px;font-weight:600;font-size:14px;color:var(--ink);list-style:none}
.ph-howto summary::-webkit-details-marker{display:none}
.ph-howto summary::before{content:"+ ";color:var(--accent);font-weight:700}
.ph-howto[open] summary::before{content:"\2013 "}
.ph-howto summary .hint{font-weight:400;color:var(--slate);font-size:12.5px;margin-left:4px}
.ph-howto-body{padding:4px 16px 16px;display:grid;grid-template-columns:280px 1fr;gap:18px;align-items:start}
.ph-howto-body svg{width:100%;height:auto;background:var(--paper);border-radius:8px}
.ph-steps{margin:0;padding-left:20px;font-size:14px;line-height:1.6;color:var(--ink-2)}
.ph-steps li{margin-bottom:7px}
@media(max-width:640px){.ph-wrap{grid-template-columns:1fr}.ph-howto-body{grid-template-columns:1fr}}

/* roof-type identifier diagrams */
.rt-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px;margin:18px 0 28px}
.rt-card{border:1px solid var(--line);border-radius:10px;overflow:hidden;background:var(--card);box-shadow:var(--shadow);display:flex;flex-direction:column}
.rt-diagram{background:var(--paper);padding:10px;border-bottom:1px solid var(--line)}
.rt-svg{width:100%;height:auto;display:block;max-height:150px}
.rt-body{padding:14px 16px}
.rt-body h3{margin:0 0 6px;font-size:17px;color:var(--ink)}
.rt-body p{font-size:14px;line-height:1.55;color:var(--ink-2);margin:0 0 8px}
.rt-est{font-size:13.5px;color:var(--ink-2)}
.rt-cta{display:inline-block;margin-top:4px;color:var(--accent-ink);font-weight:600;font-size:14px}
@media(max-width:640px){.rt-grid{grid-template-columns:1fr}}

/* per-calculator long-form content */
.calc-content{margin-top:30px}
.calc-content .lead{font-size:18px;color:var(--ink);font-weight:500}
.calc-content h2{margin-top:30px}
.cc-inputs{margin:10px 0 0;display:grid;gap:0}
.cc-inputs dt{font-weight:700;color:var(--ink);margin-top:12px;font-size:15px}
.cc-inputs dd{margin:3px 0 0;color:var(--ink-2);font-size:15px;line-height:1.55}
.cc-steps{margin:10px 0;padding-left:22px;line-height:1.7}
.cc-steps li{margin-bottom:6px;color:var(--ink-2)}
.cc-steps li .mono,.calc-content .mono{font-family:'JetBrains Mono',monospace}
.cc-result{background:var(--paper);border-left:3px solid var(--accent);border-radius:6px;padding:12px 14px;font-weight:500;color:var(--ink)}
.cc-faq{border-bottom:1px solid var(--line);padding:4px 0}
.cc-faq summary{cursor:pointer;font-weight:600;color:var(--ink);padding:9px 0;list-style:none;font-size:15.5px}
.cc-faq summary::-webkit-details-marker{display:none}
.cc-faq summary::before{content:"+ ";color:var(--accent);font-weight:700}
.cc-faq[open] summary::before{content:"\2013 "}
.cc-faq p{margin:0 0 10px;color:var(--ink-2);font-size:15px;line-height:1.6}

/* related-calculators cross-link block */
.related{margin-top:30px;padding-top:22px;border-top:1px solid var(--line)}
.related h2{margin:0 0 12px;font-size:18px}
.related-links{display:flex;flex-wrap:wrap;gap:10px}
.related-links a{display:inline-block;padding:8px 14px;border:1px solid var(--line);border-radius:20px;font-size:14px;color:var(--accent-ink);background:var(--card);text-decoration:none}
.related-links a:hover{border-color:var(--accent);background:var(--paper)}
/* brand mark (favicon-style roof glyph in the header) */
.brand .mark{display:inline-block;width:26px;height:26px;border-radius:6px;background:var(--ink) url("/assets/img/favicon.svg") center/18px no-repeat;vertical-align:middle;margin-right:8px}