/* Shared styles — mobile-first, no external dependencies */
:root{--bg:#f7f8fa;--card:#fff;--text:#1d2330;--muted:#5a6475;--line:#dde1e8;--brand:#1f5fbf;--brand-d:#174a96;--ok:#1d7a46;--err:#b42318;--radius:10px;--shadow:0 1px 3px rgba(16,24,40,.08)}
*,*::before,*::after{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:16px/1.6 system-ui,-apple-system,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;color:var(--text);background:var(--bg)}
a{color:var(--brand)}a:hover{color:var(--brand-d)}
img{max-width:100%;height:auto}
.skip{position:absolute;left:-999px;top:0;background:#fff;padding:.5rem 1rem;z-index:10}.skip:focus{left:.5rem}
.wrap{max-width:960px;margin:0 auto;padding:0 1rem}
header.site{background:#fff;border-bottom:1px solid var(--line)}
header.site .wrap{display:flex;flex-wrap:wrap;align-items:center;justify-content:space-between;gap:.5rem;padding:.6rem 1rem}
.logo{font-weight:700;font-size:1.1rem;text-decoration:none;color:var(--text)}.logo span{color:var(--brand)}
nav.main ul{list-style:none;margin:0;padding:0;display:flex;flex-wrap:wrap;gap:.25rem .9rem;font-size:.95rem}
nav.main a{text-decoration:none;color:var(--muted);padding:.25rem 0;display:inline-block}
nav.main a[aria-current=page]{color:var(--brand);font-weight:600;border-bottom:2px solid var(--brand)}
main{padding:1rem 0 2rem}
h1{font-size:1.6rem;line-height:1.25;margin:.5rem 0 .4rem}
h2{font-size:1.3rem;margin:2rem 0 .6rem;line-height:1.3}
h3{font-size:1.05rem;margin:1.2rem 0 .3rem}
.lead{color:var(--muted);margin:0 0 1rem}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:1rem;margin:1rem 0}
label{font-weight:600;font-size:.9rem;display:block;margin-bottom:.2rem}
input,select{font:inherit;width:100%;padding:.5rem .55rem;border:1px solid #b9c0cc;border-radius:7px;background:#fff;color:var(--text);min-height:42px}
input:focus,select:focus,button:focus-visible,a:focus-visible{outline:3px solid #9cc0f5;outline-offset:1px;border-color:var(--brand)}
input[aria-invalid=true]{border-color:var(--err);background:#fff5f4}
button,.btn{font:inherit;font-weight:600;cursor:pointer;border-radius:7px;border:1px solid var(--brand);background:var(--brand);color:#fff;padding:.55rem 1rem;min-height:42px;text-decoration:none;display:inline-block}
button:hover{background:var(--brand-d)}
button.secondary{background:#fff;color:var(--brand)}button.secondary:hover{background:#eef4fd}
.btns{display:flex;flex-wrap:wrap;gap:.5rem;margin-top:1rem}
.grid{display:grid;gap:.75rem;grid-template-columns:1fr 1fr}
@media(min-width:700px){.grid.cols-4{grid-template-columns:repeat(4,1fr)}.grid.cols-3{grid-template-columns:repeat(3,1fr)}}
.hint{font-size:.85rem;color:var(--muted);margin:.25rem 0 0}
/* Time card table: stacked rows on mobile, table on desktop */
.tc{width:100%;border-collapse:collapse}
.tc th{font-size:.82rem;text-align:left;color:var(--muted);font-weight:600;padding:.4rem .35rem;border-bottom:2px solid var(--line)}
.tc td{padding:.35rem;vertical-align:middle}
.tc .day{font-weight:700;white-space:nowrap}
.tc .out{font-variant-numeric:tabular-nums;white-space:nowrap}
.tc .err{color:var(--err);font-size:.8rem;display:block}
.tc .night{color:var(--brand);font-size:.75rem;display:block}
.tc input.brk{max-width:90px}
@media(max-width:699px){
 .tc thead{position:absolute;left:-9999px}
 .tc tr{display:grid;grid-template-columns:1fr 1fr 80px;gap:.35rem .5rem;padding:.6rem 0;border-bottom:1px solid var(--line)}
 .tc td{padding:0}
 .tc td.day{grid-column:1/-1}
 .tc td[data-label]::before{content:attr(data-label);display:block;font-size:.75rem;color:var(--muted);font-weight:600}
}
@media(min-width:700px){.tc tbody tr:nth-child(odd){background:#fafbfc}.tc tbody tr{border-bottom:1px solid var(--line)}}
.summary{display:grid;grid-template-columns:repeat(2,1fr);gap:.6rem;margin-top:1rem}
@media(min-width:700px){.summary{grid-template-columns:repeat(4,1fr)}}
.stat{background:#f1f5fc;border-radius:8px;padding:.6rem .75rem}
.stat b{display:block;font-size:1.25rem;font-variant-numeric:tabular-nums}
.stat small{color:var(--muted);font-size:.8rem}
.stat.total{background:#e6f4ec}.stat.total b{color:var(--ok)}
.result{font-size:1.15rem;background:#f1f5fc;border-radius:8px;padding:.75rem;margin-top:1rem;font-variant-numeric:tabular-nums}
.result strong{font-size:1.4rem}
.chart{width:100%;border-collapse:collapse;font-variant-numeric:tabular-nums;font-size:.95rem}
.chart th,.chart td{border:1px solid var(--line);padding:.35rem .5rem;text-align:left}
.chart thead th{background:#eef2f8}
.chart tbody tr:nth-child(even){background:#fafbfc}
.chart-wrap{overflow-x:auto}
.faq details{border:1px solid var(--line);border-radius:8px;background:#fff;margin:.5rem 0;padding:.6rem .8rem}
.faq summary{font-weight:600;cursor:pointer}
.faq details p{margin:.5rem 0 .2rem}
.content p,.content li{max-width:70ch}
.related{display:grid;gap:.6rem;grid-template-columns:1fr}
@media(min-width:700px){.related{grid-template-columns:repeat(3,1fr)}}
.related a{display:block;background:#fff;border:1px solid var(--line);border-radius:8px;padding:.75rem;text-decoration:none}
.related a span{display:block;color:var(--muted);font-size:.88rem}
/* Ad slots: reserved height prevents layout shift (CLS). Remove the dashed placeholder look once ads are live. */
.ad-slot{display:flex;align-items:center;justify-content:center;width:100%;min-height:100px;margin:1.25rem 0;border:1px dashed #c4cad4;border-radius:8px;background:#f0f2f5;color:#8a93a3;font-size:.75rem;letter-spacing:.05em;text-transform:uppercase;overflow:hidden}
.ad-slot::before{content:"Advertisement"}
@media(min-width:700px){.ad-slot{min-height:90px}.ad-slot.ad-rect{min-height:250px}}
footer.site{border-top:1px solid var(--line);background:#fff;color:var(--muted);font-size:.9rem;padding:1.25rem 0}
footer.site ul{list-style:none;padding:0;margin:.4rem 0;display:flex;flex-wrap:wrap;gap:.3rem 1rem}
.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0);white-space:nowrap}
.print-only{display:none}
@media print{
 @page{margin:12mm}
 body{background:#fff;font-size:11pt}
 header.site,footer.site,.ad-slot,.btns,.no-print,.content,.faq,.related-sec,.skip,.hint,.lead{display:none!important}
 input::placeholder{color:transparent!important}
 .print-only{display:block}
 .card{border:0;box-shadow:none;padding:0;margin:0 0 8pt}
 input,select{border:0;padding:0;min-height:0;background:none;-webkit-appearance:none;appearance:none}
 .tc thead{position:static}.tc tr{display:table-row!important}.tc td,.tc th{display:table-cell!important;border:1px solid #999;padding:3pt 5pt}
 .tc td[data-label]::before{display:none!important}
 .summary{grid-template-columns:repeat(4,1fr)}
 .stat{border:1px solid #999;background:none!important}
 .sig{display:flex;gap:2rem;margin-top:24pt}.sig div{flex:1;border-top:1px solid #000;padding-top:3pt;font-size:9pt}
}
@media (prefers-reduced-motion:reduce){*{scroll-behavior:auto!important}}
.grid.two{grid-template-columns:1fr}.grid>.card{margin:0}
@media(min-width:700px){.grid.two{grid-template-columns:1fr 1fr}}
.err{color:var(--err)}
label.check{display:flex;align-items:center;gap:.4rem;font-weight:600}
label.check input{width:auto;min-height:0}
.grid.days small.hint{display:block;min-height:1.2em}
@media(min-width:700px){.summary.sal{grid-template-columns:repeat(3,1fr)}}
.chart-cols{display:grid;gap:.75rem;grid-template-columns:1fr}
@media(min-width:700px){.chart-cols{grid-template-columns:repeat(3,1fr)}}
[hidden]{display:none!important}