/* Concrete Pour Calculator — brand styles
   Palette: charcoal #23272b, safety orange #e8590c, off-white #faf9f7 */
:root{
  --ink:#23272b;
  --ink-soft:#3c4249;
  --accent:#e8590c;
  --accent-dark:#c24e02;
  --bg:#faf9f7;
  --card:#ffffff;
  --line:#e3e0da;
  --muted:#6b7280;
  --panel:#23272b;
  --panel-ink:#fdfcf9;
}
*{box-sizing:border-box}
html{margin:0;padding:0}
body{
  margin:0;padding:0;background:var(--bg);color:var(--ink);
  font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,"Helvetica Neue",Arial,sans-serif;
  font-size:18px;line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent-dark)}
a:hover{color:var(--accent)}
.wrap{max-width:1060px;margin:0 auto;padding:0 20px}

/* Header */
header.site{
  background:var(--ink);color:var(--panel-ink);
  border-bottom:4px solid var(--accent);
}
header.site .wrap{display:flex;flex-wrap:wrap;align-items:center;gap:10px 26px;padding-top:16px;padding-bottom:16px}
.logo{font-size:24px;font-weight:800;letter-spacing:-.02em;color:#fff;text-decoration:none;line-height:1.1}
.logo span{color:var(--accent)}
.logo small{display:block;font-size:12px;font-weight:600;letter-spacing:.14em;text-transform:uppercase;color:#b9bec5;margin-top:3px}
nav.main{display:flex;flex-wrap:wrap;gap:4px 20px;margin-left:auto}
nav.main a{color:#e8e6e1;text-decoration:none;font-weight:600;font-size:16px;padding:8px 2px}
nav.main a:hover{color:var(--accent)}

/* Hero */
.hero{padding:44px 0 8px}
.hero h1{font-size:42px;line-height:1.08;letter-spacing:-.02em;margin:0 0 14px}
.hero h1 em{font-style:normal;color:var(--accent-dark)}
.hero p.lede{font-size:20px;color:var(--ink-soft);max-width:720px;margin:0 0 10px}
h1.page{font-size:36px;line-height:1.12;letter-spacing:-.02em;margin:36px 0 10px}
p.lede{font-size:19px;color:var(--ink-soft);max-width:740px}
h2{font-size:27px;letter-spacing:-.01em;margin:40px 0 12px;line-height:1.2}
h3{font-size:20px;margin:24px 0 8px}
p{margin:0 0 14px}
ul,ol{margin:0 0 16px;padding-left:24px}
li{margin-bottom:6px}

/* Calculator card */
.calc{
  background:var(--card);border:1px solid var(--line);border-radius:14px;
  padding:26px;margin:26px 0;
  box-shadow:0 2px 10px rgba(35,39,43,.05);
}
.calc h2,.calc h3{margin-top:0}
.fields{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:16px}
.field label{display:block;font-weight:700;font-size:15px;margin-bottom:6px}
.field .hint{font-weight:400;color:var(--muted);font-size:13.5px;display:block;margin-top:4px}
.field input,.field select{
  width:100%;font-size:17px;padding:13px 12px;border:2px solid #c9cdd2;border-radius:10px;
  background:#fff;color:var(--ink);min-height:52px;
  font-variant-numeric:tabular-nums;
}
.field input:focus,.field select:focus{outline:3px solid rgba(232,89,12,.35);border-color:var(--accent)}
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:6px 0 2px}
.chip{
  border:2px solid #c9cdd2;background:#fff;color:var(--ink);border-radius:999px;
  font-size:15.5px;font-weight:600;padding:10px 16px;cursor:pointer;min-height:46px;
}
.chip:hover{border-color:var(--accent)}
.chip[aria-pressed="true"]{background:var(--ink);color:#fff;border-color:var(--ink)}
details.prices{margin-top:20px;border-top:1px dashed var(--line);padding-top:14px}
details.prices summary{font-weight:700;cursor:pointer;font-size:16px;padding:6px 0}
details.prices .fields{margin-top:12px}
.note{font-size:15px;color:var(--ink-soft);background:#fdf1e7;border:1px solid #f5cfb4;border-radius:10px;padding:12px 14px;margin:16px 0}
.disclaimer{font-size:14px;color:var(--muted);margin-top:14px}

/* Results panel */
.results{
  background:var(--panel);color:var(--panel-ink);border-radius:14px;
  padding:24px 26px;margin:22px 0 6px;
}
.results .r-label{font-size:13px;font-weight:700;letter-spacing:.13em;text-transform:uppercase;color:#f0a35e}
.results .r-big{font-size:52px;font-weight:800;line-height:1.05;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.results .r-big small{font-size:22px;font-weight:600;color:#c9ced4}
.results .r-sub{font-size:16.5px;color:#d8dade;margin-top:4px;font-variant-numeric:tabular-nums}
.bagrow{display:grid;grid-template-columns:repeat(4,1fr);gap:12px;margin-top:20px}
.bagcell{background:#31363c;border:1px solid #454b52;border-radius:10px;padding:14px 10px;text-align:center}
.bagcell .n{font-size:30px;font-weight:800;line-height:1;font-variant-numeric:tabular-nums}
.bagcell .t{font-size:13.5px;color:#c9ced4;margin-top:5px}
.bagcell .e{font-size:12.5px;color:#9aa1a9;margin-top:2px}
.compare{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-top:16px}
.compare .ccell{background:#31363c;border:1px solid #454b52;border-radius:10px;padding:14px 16px}
.compare .ccell .t{font-size:13px;font-weight:700;letter-spacing:.1em;text-transform:uppercase;color:#f0a35e}
.compare .ccell .n{font-size:27px;font-weight:800;font-variant-numeric:tabular-nums;margin-top:3px}
.compare .ccell .s{font-size:13.5px;color:#c9ced4}
.results .r-note{font-size:15px;color:#ffd9bd;margin-top:16px;border-top:1px solid #454b52;padding-top:14px}
.btn{
  display:inline-block;background:var(--accent);color:#fff;border:none;border-radius:10px;
  font-size:17px;font-weight:700;padding:14px 26px;cursor:pointer;min-height:52px;text-decoration:none;
}
.btn:hover{background:var(--accent-dark);color:#fff}
.btn.ghost{background:#fff;color:var(--ink);border:2px solid var(--ink)}
.results .printrow{margin-top:18px}
.results .btn{background:var(--accent)}

/* Card grid */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px;margin:22px 0}
.card{
  background:var(--card);border:1px solid var(--line);border-radius:12px;padding:20px;
  text-decoration:none;color:var(--ink);display:block;
}
.card:hover{border-color:var(--accent);box-shadow:0 4px 14px rgba(35,39,43,.08)}
.card .ic{font-size:28px;line-height:1}
.card h3{margin:10px 0 6px;font-size:19px}
.card p{font-size:15.5px;color:var(--ink-soft);margin:0}

/* Tables */
table{border-collapse:collapse;width:100%;margin:16px 0 22px;background:#fff;font-variant-numeric:tabular-nums}
th,td{border:1px solid var(--line);padding:11px 13px;text-align:left;font-size:16.5px}
th{background:var(--ink);color:#fff;font-size:15px;letter-spacing:.02em}
tr:nth-child(even) td{background:#f4f2ee}

/* FAQ */
.faq details{background:#fff;border:1px solid var(--line);border-radius:10px;margin-bottom:10px;padding:4px 18px}
.faq summary{font-weight:700;font-size:17.5px;cursor:pointer;padding:12px 0}
.faq details p{color:var(--ink-soft)}
.example{background:#fff;border-left:5px solid var(--accent);border:1px solid var(--line);border-left:5px solid var(--accent);border-radius:8px;padding:14px 18px;margin:18px 0;font-size:16.5px}
.example strong{color:var(--accent-dark)}

/* Footer */
footer.site{margin-top:56px;background:var(--ink);color:#c9ced4;padding:34px 0 26px}
footer.site .cols{display:flex;flex-wrap:wrap;gap:14px 44px}
footer.site h4{color:#fff;font-size:15px;letter-spacing:.1em;text-transform:uppercase;margin:0 0 10px}
footer.site ul{list-style:none;padding:0;margin:0}
footer.site li{margin-bottom:7px}
footer.site a{color:#c9ced4;text-decoration:none;font-size:15.5px}
footer.site a:hover{color:var(--accent)}
footer.site .fineprint{font-size:13.5px;color:#9aa1a9;margin-top:24px;max-width:820px}
footer.site .credit{font-size:13px;color:#9aa1a9;text-align:center;border-top:1px solid #3a4046;margin-top:22px;padding-top:16px}
footer.site .credit a{color:#c9ced4;font-size:13px;text-decoration:underline}

@media (max-width:640px){
  body{font-size:17px}
  .hero h1{font-size:32px}
  h1.page{font-size:29px}
  .results .r-big{font-size:42px}
  .bagrow{grid-template-columns:repeat(2,1fr)}
  .compare{grid-template-columns:1fr}
  .calc{padding:20px 16px}
  .results{padding:20px 16px}
  nav.main{margin-left:0}
}
@media print{
  header.site,footer.site,nav.main,.printrow,.chips{display:none}
  body{background:#fff}
  .results{background:#fff;color:#000;border:2px solid #000}
  .results .r-big,.results .r-sub,.bagcell .n,.compare .ccell .n{color:#000}
  .bagcell,.compare .ccell{background:#fff;border-color:#999}
}