/* Home & DIY Calculators — shared stylesheet */

@import url('https://fonts.googleapis.com/css2?family=Space+Grotesk:wght@500;600;700&family=IBM+Plex+Sans:wght@400;500;600;700&family=IBM+Plex+Mono:wght@500;600;700&display=swap');

:root{
  --bg:#EEF2F1;
  --surface:#FFFFFF;
  --ink:#14293D;
  --ink-soft:#4B6178;
  --accent:#C1440E;
  --accent-ink:#FFFFFF;
  --teal:#C1440E;
  --line:#CBD7D6;
  --danger:#B34B3C;
  --radius:4px;
  --max:1040px;
}

*{box-sizing:border-box;}
html{scroll-behavior:smooth;}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:'IBM Plex Sans',system-ui,sans-serif;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  padding:clamp(1rem,4vw,3rem) 1rem;
  min-height:100vh;
}
.page-box{
  max-width:880px;
  margin:0 auto;
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:12px;
  box-shadow:0 10px 40px rgba(20,41,61,0.10);
  overflow:hidden;
}
h1,h2,h3,.display{
  font-family:'Space Grotesk',system-ui,sans-serif;
  font-weight:700;
  letter-spacing:-0.01em;
  line-height:1.05;
  margin:0 0 0.4em;
  color:var(--ink);
}
h1{font-size:clamp(2.2rem,5.4vw,3.6rem);}
h2{font-size:clamp(1.4rem,3vw,1.9rem);}
p{margin:0 0 1em;color:var(--ink-soft);max-width:64ch;}
a{color:var(--ink);text-decoration:underline;text-decoration-color:var(--line);text-underline-offset:2px;}
a:hover{text-decoration-color:var(--accent);}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible{
  outline:3px solid var(--accent);outline-offset:2px;
}

.wrap{max-width:var(--max);margin:0 auto;padding:0 1.5rem;}

/* ruler-tick divider */
.ticks{
  height:14px;
  background-image:repeating-linear-gradient(90deg,var(--ink) 0 1px,transparent 1px 12px),
                    repeating-linear-gradient(90deg,var(--ink) 0 1px,transparent 1px 60px);
  background-size:100% 7px, 100% 14px;
  background-position:bottom left, bottom left;
  background-repeat:repeat-x;
  opacity:0.35;
}

header.site{
  border-bottom:1px solid var(--line);
  background:var(--surface);
}
.site-inner{
  display:flex;align-items:center;justify-content:space-between;
  padding:1.1rem 1.5rem;max-width:var(--max);margin:0 auto;
}
.logo{
  font-family:'Space Grotesk',sans-serif;font-weight:700;
  font-size:1.3rem;color:var(--ink);
}
.logo span{color:var(--accent-ink);background:var(--accent);padding:0 .3em;}
nav.crumb a{font-weight:600;font-size:.95rem;}

main{padding-bottom:4rem;}

.hero{padding:3rem 0 2rem;}
.hero .eyebrow{color:var(--teal);font-weight:700;font-size:.9rem;}
.hero p.lede{font-size:1.15rem;max-width:56ch;}

/* tool grid on homepage */
.grid{
  display:grid;gap:1.1rem;
  grid-template-columns:repeat(auto-fit,minmax(260px,1fr));
  margin-top:1.5rem;
}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  padding:1.4rem;
  display:flex;flex-direction:column;gap:.6rem;
  transition:border-color .15s ease;
}
.card:hover{border-color:var(--ink);}
.card .icon{width:34px;height:34px;color:var(--teal);}
.card h3{font-size:1.3rem;margin-bottom:.1em;}
.card p{font-size:.95rem;margin-bottom:.2rem;}
.card .go{font-weight:700;font-size:.9rem;}

/* calculator layout */
.calc{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--radius);
  display:grid;grid-template-columns:1.1fr 1fr;
  overflow:hidden;
}
@media (max-width:720px){.calc{grid-template-columns:1fr;}}

.calc-inputs{padding:1.75rem;border-right:1px solid var(--line);}
@media (max-width:720px){.calc-inputs{border-right:none;border-bottom:1px solid var(--line);}}
.field{margin-bottom:1.1rem;}
.field label{display:block;font-weight:600;font-size:.92rem;margin-bottom:.35rem;}
.field .hint{font-size:.8rem;color:var(--ink-soft);margin-top:.25rem;}
input[type=number],input[type=text],select{
  width:100%;padding:.6rem .7rem;border:1px solid var(--line);
  border-radius:var(--radius);font-size:1rem;font-family:inherit;
  background:#fff;color:var(--ink);
}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:.9rem;}

.preset-row{display:flex;gap:.5rem;flex-wrap:wrap;margin-bottom:.6rem;}
.preset{
  border:1px solid var(--line);background:#fff;border-radius:999px;
  padding:.4rem 1rem;font-weight:700;font-size:.9rem;cursor:pointer;
  font-family:inherit;color:var(--ink);
}
.preset[aria-pressed="true"]{background:var(--accent);border-color:var(--accent);color:var(--accent-ink);}

.calc-result{
  background:var(--ink);color:#fff;padding:1.75rem;
  display:flex;flex-direction:column;justify-content:center;gap:1.1rem;
}
.calc-result .stat-label{font-size:.85rem;text-transform:uppercase;letter-spacing:.06em;color:#9FB3C4;font-weight:600;}
.calc-result .stat-value{font-family:'IBM Plex Mono',monospace;font-weight:600;font-size:2.1rem;line-height:1.1;color:var(--accent);}
.calc-result .stat{border-bottom:1px solid rgba(255,255,255,.15);padding-bottom:.9rem;}
.calc-result .stat:last-child{border-bottom:none;padding-bottom:0;}

.explain{padding:2.5rem 0 0;max-width:70ch;}
.explain h2{margin-bottom:.5rem;}

.faq{padding:2rem 0 0;}
.faq-item{border-top:1px solid var(--line);padding:1.1rem 0;}
.faq-item:last-child{border-bottom:1px solid var(--line);}
.faq-item h3{font-family:'IBM Plex Sans';font-weight:700;font-size:1.05rem;letter-spacing:0;margin-bottom:.4rem;color:var(--ink);}
.faq-item p{margin-bottom:0;}

.ad-slot{
  margin:2.5rem 0;padding:1rem;border:1px dashed var(--line);
  text-align:center;color:var(--ink-soft);font-size:.85rem;border-radius:var(--radius);
}

footer.site{border-top:1px solid var(--line);padding:2rem 0;margin-top:2rem;}
footer.site p{font-size:.85rem;color:var(--ink-soft);}
footer.site nav a{margin-right:1.2rem;font-size:.9rem;font-weight:600;}

.back-link{display:inline-block;margin-bottom:1rem;font-weight:600;font-size:.92rem;}

@media (prefers-reduced-motion: reduce){html{scroll-behavior:auto;}*{transition:none!important;}}