/*
Theme Name: CalcShelf
Description: Lightweight theme converted from the CalcShelf static website.
Version: 1.0
Author: CalcShelf
Text Domain: calcshelf
*/

:root{--ink:#12203A;--paper:#EEF2EE;--grid:#D5DDD6;--blue:#2B4EFF;--mark:#FFE066;--mute:#4A5872;--white:#fff;--line:#12203A}
@media (prefers-color-scheme:dark){:root{--ink:#E7ECF5;--paper:#0F1726;--grid:#1B2740;--blue:#7C96FF;--mark:#5C4B00;--mute:#9AA9C4;--white:#16213A;--line:#8FA0C2}}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;color:var(--ink);background-color:var(--paper);
background-image:linear-gradient(var(--grid) 1px,transparent 1px),linear-gradient(90deg,var(--grid) 1px,transparent 1px);
background-size:28px 28px;font-family:"Bricolage Grotesque","Segoe UI",system-ui,sans-serif;font-size:17px;line-height:1.6}
a{color:var(--blue)}
a:focus-visible,button:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid var(--blue);outline-offset:2px}
.wrap{max-width:1040px;margin:0 auto;padding:0 20px}
header.site{background:var(--paper);border-bottom:2px solid var(--line)}
header.site .wrap{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding-top:14px;padding-bottom:14px}
.logo{font-weight:800;font-size:1.35rem;text-decoration:none;color:var(--ink);letter-spacing:-.02em}
.logo span{background:var(--mark);padding:0 6px;border-radius:3px}
nav a{margin-left:18px;color:var(--ink);text-decoration:none;font-weight:600}
nav a:hover{text-decoration:underline;text-decoration-thickness:2px}
h1,h2,h3{line-height:1.15;letter-spacing:-.02em;margin:0 0 .5em}
h1{font-size:clamp(2rem,5vw,3.2rem);font-weight:800}
h2{font-size:1.6rem;margin-top:1.6em}
h3{font-size:1.15rem}
.lead{font-size:1.2rem;color:var(--mute);max-width:56ch}
.hero{padding:56px 0 40px}
.hero .wrap{display:grid;grid-template-columns:1.15fr 1fr;gap:40px;align-items:center}
@media(max-width:820px){.hero .wrap{grid-template-columns:1fr}}
.sheet{background:var(--white);border:2px solid var(--line);border-radius:6px;padding:22px;box-shadow:6px 6px 0 var(--line)}
label{display:block;font-weight:600;margin:12px 0 4px;font-size:.95rem}
input,select,textarea{width:100%;font:inherit;padding:10px 12px;border:2px solid var(--line);border-radius:4px;background:var(--paper);color:var(--ink)}
textarea{min-height:200px;resize:vertical;font-family:inherit}
.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
@media(max-width:560px){.row{grid-template-columns:1fr}}
button,.btn{font:inherit;font-weight:700;background:var(--blue);color:#fff;border:2px solid var(--line);border-radius:4px;padding:9px 16px;cursor:pointer;margin:8px 8px 0 0}
button.alt{background:var(--white);color:var(--ink)}
.result{margin-top:16px;display:grid;gap:8px}
.result div{display:flex;justify-content:space-between;gap:12px;border-bottom:1px dashed var(--line);padding:6px 0}
.result b{background:var(--mark);padding:0 8px;border-radius:3px;font-variant-numeric:tabular-nums}
.tools{list-style:none;margin:0;padding:0;border-top:2px solid var(--line)}
.tools li{border-bottom:2px solid var(--line)}
.tools a{display:grid;grid-template-columns:240px 1fr;gap:16px;padding:16px 8px;text-decoration:none;color:var(--ink)}
.tools a:hover{background:var(--mark)}
.tools strong{font-size:1.1rem}
.tools span{color:var(--mute)}
@media(max-width:620px){.tools a{grid-template-columns:1fr;gap:2px}}
main{padding:36px 0 56px}
.prose{max-width:70ch;font-family:"Source Serif 4",Georgia,serif;font-size:1.08rem;line-height:1.75}
.prose h2,.prose h3{font-family:"Bricolage Grotesque","Segoe UI",sans-serif}
.prose p,.prose li{margin:0 0 1em}
.ad-slot{margin:28px 0;min-height:0}
.crumbs{font-size:.9rem;color:var(--mute);margin-bottom:12px}
.faq details{border-bottom:1px solid var(--line);padding:10px 0}
.faq summary{cursor:pointer;font-weight:700}
.bloglist{list-style:none;padding:0;margin:0}
.bloglist li{padding:18px 0;border-bottom:2px solid var(--line)}
.bloglist a{font-size:1.3rem;font-weight:700;text-decoration:none}
footer.site{border-top:2px solid var(--line);background:var(--paper);padding:28px 0;font-size:.95rem;color:var(--mute)}
footer.site a{margin-right:16px;color:var(--ink)}
.note{border-left:4px solid var(--blue);padding:8px 14px;background:var(--white);margin:18px 0}
@media(prefers-reduced-motion:reduce){html{scroll-behavior:auto}}