/* ============================================================
   TogWise shared design system — used by all converter pages
   ============================================================ */
:root{
  --bg:#f6f4ef;
  --bg-grad-1:#eef0ff;
  --bg-grad-2:#fdf3ec;
  --card:#ffffff;
  --ink:#1c2030;
  --ink-soft:#5a607a;
  --ink-faint:#8a90a6;
  --line:#e9e7e1;
  --line-soft:#f0eee9;
  --brand:#5b6cf0;
  --brand-deep:#4453d4;
  --brand-tint:#eef0ff;
  --amber:#f0a64a;
  --amber-tint:#fdf1e1;
  --teal:#37b6a5;
  --shadow-sm:0 1px 2px rgba(28,32,48,.06);
  --shadow:0 14px 40px -18px rgba(40,46,82,.30);
  --shadow-lg:0 30px 70px -30px rgba(40,46,82,.42);
  --r:22px;
  --r-sm:14px;
  --maxw:680px;
  --font:"Inter",-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
}
@media (prefers-color-scheme: dark){
  :root{
    --bg:#0f1117;
    --bg-grad-1:#171a27;
    --bg-grad-2:#1a1622;
    --card:#191c27;
    --ink:#eef0f7;
    --ink-soft:#a7adc4;
    --ink-faint:#727a96;
    --line:#272b3a;
    --line-soft:#21242f;
    --brand:#7c8bff;
    --brand-deep:#9aa6ff;
    --brand-tint:#20243a;
    --amber:#f3b063;
    --amber-tint:#2c2316;
    --shadow:0 18px 44px -18px rgba(0,0,0,.6);
    --shadow-lg:0 30px 70px -28px rgba(0,0,0,.7);
    --shadow-sm:0 1px 2px rgba(0,0,0,.4);
  }
}

*{box-sizing:border-box;margin:0;padding:0}
html{-webkit-text-size-adjust:100%;scroll-behavior:smooth}
body{
  font-family:var(--font);
  color:var(--ink);
  background:var(--bg);
  background-image:
    radial-gradient(900px 500px at 15% -8%, var(--bg-grad-1), transparent 60%),
    radial-gradient(800px 520px at 100% 0%, var(--bg-grad-2), transparent 55%);
  background-attachment:fixed;
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
  text-rendering:optimizeLegibility;
  padding:0 18px calc(48px + env(safe-area-inset-bottom));
}
/* ---------- Page layout + side ad rails ---------- */
.layout{display:flex;justify-content:center;align-items:flex-start;gap:24px;max-width:1360px;margin:0 auto}
.wrap{max-width:var(--maxw);width:100%;flex:0 1 var(--maxw);min-width:0;margin:0 auto}
.ad-rail{display:none}
.ad-sticky{position:sticky;top:20px}
.ad-label{font-size:10px;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-faint);text-align:center;margin-bottom:7px;font-weight:700}
.ad-slot{width:160px;height:600px;margin:0 auto;border:1px dashed var(--line);border-radius:16px;background:var(--card);display:grid;place-items:center;gap:4px;color:var(--ink-faint);font-size:12px;font-weight:600;text-align:center;line-height:1.6;box-shadow:var(--shadow-sm)}
@media (min-width:1140px){ .ad-rail{display:block;flex:0 0 160px} }
@media (min-width:1440px){ .ad-rail{flex:0 0 300px} .ad-slot{width:300px} }

/* ---------- Site nav ---------- */
.sitenav{display:flex;align-items:center;justify-content:space-between;gap:12px 14px;padding:18px 2px 4px;flex-wrap:wrap}
.brand{display:flex;align-items:center;gap:10px;font-weight:700;letter-spacing:-.01em;text-decoration:none;color:var(--ink)}
.brand .mark{
  width:38px;height:38px;border-radius:11px;display:grid;place-items:center;
  background:linear-gradient(150deg,var(--brand),var(--brand-deep));
  box-shadow:var(--shadow-sm);flex:none;
}
.brand .mark svg{width:21px;height:21px}
.brand span b{font-size:15px;display:block;line-height:1.1}
.brand span small{font-size:11px;color:var(--ink-faint);font-weight:600;letter-spacing:.02em}
.navlinks{display:flex;flex-wrap:wrap;justify-content:center;gap:3px;background:var(--card);border:1px solid var(--line);border-radius:16px;padding:4px;box-shadow:var(--shadow-sm);max-width:100%}
.navlinks a{font-size:13px;font-weight:600;color:var(--ink-soft);text-decoration:none;padding:8px 13px;border-radius:999px;white-space:nowrap;transition:.15s}
.navlinks a:hover{color:var(--ink)}
.navlinks a[aria-current="page"]{background:var(--ink);color:#fff}
@media (prefers-color-scheme: dark){.navlinks a[aria-current="page"]{background:var(--brand);color:#0f1117}}

/* ---------- Breadcrumb ---------- */
.crumbs{font-size:12.5px;color:var(--ink-faint);padding:14px 2px 0;font-weight:600}
.crumbs a{color:var(--ink-soft);text-decoration:none}
.crumbs a:hover{color:var(--ink)}
.crumbs .sep{margin:0 7px;opacity:.6}

/* ---------- Hero ---------- */
.hero{padding:20px 4px 10px;text-align:center}
.eyebrow{
  display:inline-flex;align-items:center;gap:7px;
  font-size:12px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;
  color:var(--brand-deep);background:var(--brand-tint);
  padding:6px 12px;border-radius:999px;margin-bottom:16px;
}
.eyebrow .dot{width:7px;height:7px;border-radius:50%;background:var(--teal)}
h1{
  font-size:clamp(28px,7vw,42px);line-height:1.08;letter-spacing:-.025em;font-weight:800;
  margin-bottom:12px;
}
h1 .swap{white-space:nowrap;color:var(--brand);background:linear-gradient(115deg,var(--brand),#9b6ef0);-webkit-background-clip:text;background-clip:text;-webkit-text-fill-color:transparent}
.lede{font-size:clamp(15px,3.8vw,18px);color:var(--ink-soft);max-width:32em;margin:0 auto}

/* ---------- Tabs ---------- */
.tabs{
  display:flex;gap:6px;background:var(--card);border:1px solid var(--line);
  padding:6px;border-radius:999px;margin:26px auto 18px;max-width:440px;
  box-shadow:var(--shadow-sm);
}
.tab{
  flex:1;border:0;background:transparent;cursor:pointer;font-family:inherit;
  font-size:14px;font-weight:700;color:var(--ink-soft);padding:11px 10px;border-radius:999px;
  transition:.18s;letter-spacing:-.01em;
}
.tab[aria-selected="true"]{background:var(--ink);color:#fff;box-shadow:var(--shadow-sm)}
@media (prefers-color-scheme: dark){.tab[aria-selected="true"]{background:var(--brand);color:#0f1117}}

/* ---------- Card ---------- */
.card{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r);
  box-shadow:var(--shadow);padding:22px;
}
.panel{animation:rise .35s ease both}
@keyframes rise{from{opacity:0;transform:translateY(8px)}to{opacity:1;transform:none}}

.field{margin-bottom:18px}
.field:last-child{margin-bottom:0}
.label{
  display:block;font-size:12px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;
  color:var(--ink-faint);margin-bottom:9px;
}

/* segmented control */
.seg{
  display:grid;grid-auto-flow:column;grid-auto-columns:1fr;gap:4px;
  background:var(--line-soft);border-radius:13px;padding:4px;
}
.seg.wrap2{grid-auto-flow:row;grid-template-columns:1fr 1fr}
.seg.wrap3{grid-auto-flow:row;grid-template-columns:1fr 1fr 1fr}
.seg button{
  border:0;background:transparent;cursor:pointer;font-family:inherit;
  font-size:13.5px;font-weight:600;color:var(--ink-soft);padding:10px 8px;border-radius:10px;
  transition:.15s;line-height:1.2;
}
.seg button small{display:block;font-size:11px;color:var(--ink-faint);font-weight:500;margin-top:2px}
.seg button[aria-pressed="true"]{
  background:var(--card);color:var(--ink);box-shadow:var(--shadow-sm);
}
.seg button[aria-pressed="true"] small{color:var(--brand-deep)}

/* number stepper */
.stepper{
  display:flex;align-items:stretch;border:1.5px solid var(--line);border-radius:14px;overflow:hidden;
  background:var(--card);
}
.stepper button{
  width:54px;border:0;background:var(--line-soft);cursor:pointer;font-size:24px;font-weight:600;
  color:var(--ink-soft);font-family:inherit;transition:.15s;flex:none;
}
.stepper button:hover{background:var(--brand-tint);color:var(--brand-deep)}
.stepper button:active{transform:scale(.96)}
.stepper .val{
  flex:1;text-align:center;display:flex;align-items:baseline;justify-content:center;gap:6px;
  padding:14px 4px;
}
.stepper input{
  border:0;background:transparent;font-family:inherit;font-size:34px;font-weight:800;
  color:var(--ink);text-align:center;width:100%;max-width:140px;letter-spacing:-.02em;
  -moz-appearance:textfield;
}
.stepper input::-webkit-outer-spin-button,.stepper input::-webkit-inner-spin-button{-webkit-appearance:none;margin:0}
.stepper input:focus{outline:none}
.stepper .unit{font-size:15px;font-weight:700;color:var(--ink-faint);align-self:center}

/* result */
.result{
  margin-top:22px;border-radius:18px;padding:20px;
  background:linear-gradient(160deg,var(--brand-tint),transparent);
  border:1px solid var(--line);
}
.result .rtop{display:flex;align-items:flex-end;justify-content:space-between;gap:14px;flex-wrap:wrap}
.result .big{font-size:clamp(34px,9vw,48px);font-weight:800;letter-spacing:-.03em;line-height:1}
.result .big.text{font-size:clamp(24px,6vw,32px)}
.result .big .u{font-size:18px;font-weight:700;color:var(--ink-faint);margin-left:4px}
.result .sub{font-size:13px;color:var(--ink-soft);margin-top:6px;font-weight:500}
.badge{
  display:inline-flex;align-items:center;gap:7px;font-size:13px;font-weight:700;
  padding:8px 13px;border-radius:999px;background:var(--card);border:1px solid var(--line);
  box-shadow:var(--shadow-sm);white-space:nowrap;
}
.badge .emoji{font-size:15px}
.meterwrap{margin-top:18px}
.meter{height:9px;border-radius:999px;overflow:hidden;background:var(--line-soft);position:relative}
.meter .fill{height:100%;border-radius:999px;transition:width .4s ease, background .3s}
.meterlabels{display:flex;justify-content:space-between;font-size:11px;color:var(--ink-faint);font-weight:600;margin-top:7px}

/* CTA */
.cta{
  display:flex;align-items:center;justify-content:center;gap:9px;width:100%;
  margin-top:18px;text-decoration:none;font-weight:700;font-size:15.5px;
  background:linear-gradient(150deg,var(--amber),#e8923a);color:#3a2607;
  padding:15px 18px;border-radius:14px;box-shadow:0 12px 26px -12px rgba(240,166,74,.8);
  transition:.18s;letter-spacing:-.01em;
}
.cta:hover{transform:translateY(-1px);box-shadow:0 16px 32px -12px rgba(240,166,74,.9)}
.cta:active{transform:translateY(0)}
.cta svg{width:18px;height:18px;flex:none}
.cta-note{text-align:center;font-size:11.5px;color:var(--ink-faint);margin-top:9px}

.hint{font-size:12.5px;color:var(--ink-faint);margin-top:10px;line-height:1.5}

/* safety / callout */
.safety{
  background:var(--amber-tint);border:1px solid var(--line);border-radius:var(--r-sm);
  padding:14px 16px;font-size:13.5px;color:var(--ink-soft);line-height:1.6;margin-top:18px;
  display:flex;gap:11px;
}
.safety .ic{font-size:18px;flex:none;line-height:1.4}
.safety b{color:var(--ink)}

/* ---------- Reference table ---------- */
section.block{margin-top:40px}
.block h2{font-size:clamp(20px,5vw,26px);letter-spacing:-.02em;font-weight:800;margin-bottom:6px}
.block .intro{color:var(--ink-soft);font-size:15px;margin-bottom:18px;max-width:38em}
.reftable{width:100%;border-collapse:separate;border-spacing:0;background:var(--card);
  border:1px solid var(--line);border-radius:var(--r);overflow:hidden;box-shadow:var(--shadow-sm)}
.reftable th,.reftable td{padding:13px 14px;text-align:left;font-size:14px;border-bottom:1px solid var(--line-soft)}
.reftable th{font-size:11px;text-transform:uppercase;letter-spacing:.04em;color:var(--ink-faint);font-weight:700;background:var(--line-soft)}
.reftable tr:last-child td{border-bottom:0}
.reftable td:first-child{font-weight:800;font-size:15px}
.reftable .pill{display:inline-block;font-size:12px;font-weight:700;padding:3px 9px;border-radius:999px}
@media (max-width:560px){
  .reftable thead{display:none}
  .reftable,.reftable tbody,.reftable tr,.reftable td{display:block;width:100%}
  .reftable tr{border-bottom:1px solid var(--line);padding:6px 4px}
  .reftable tr:last-child{border-bottom:0}
  .reftable td{border:0;padding:6px 14px;display:flex;justify-content:space-between;gap:14px;align-items:center}
  .reftable td::before{content:attr(data-l);font-size:11px;text-transform:uppercase;letter-spacing:.04em;color:var(--ink-faint);font-weight:700}
  .reftable td:first-child{padding-top:14px;font-size:16px}
  .reftable td:first-child::before{content:""}
  .reftable td:last-child{padding-bottom:14px}
}

/* ---------- FAQ ---------- */
details.faq{
  background:var(--card);border:1px solid var(--line);border-radius:var(--r-sm);
  margin-bottom:10px;overflow:hidden;box-shadow:var(--shadow-sm);
}
details.faq summary{
  cursor:pointer;list-style:none;padding:16px 18px;font-weight:700;font-size:15px;
  display:flex;align-items:center;justify-content:space-between;gap:12px;letter-spacing:-.01em;
}
details.faq summary::-webkit-details-marker{display:none}
details.faq summary .chev{transition:.2s;color:var(--ink-faint);flex:none}
details.faq[open] summary .chev{transform:rotate(180deg)}
details.faq .body{padding:0 18px 18px;color:var(--ink-soft);font-size:14.5px}
details.faq .body p{margin-bottom:10px}
details.faq .body p:last-child{margin-bottom:0}

/* ---------- Related tools ---------- */
.related-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.related-card{
  display:block;text-decoration:none;background:var(--card);border:1px solid var(--line);
  border-radius:var(--r-sm);padding:16px;box-shadow:var(--shadow-sm);transition:.16s;
}
.related-card:hover{transform:translateY(-2px);box-shadow:var(--shadow)}
.related-card .rc-emoji{font-size:22px}
.related-card .rc-title{font-weight:800;color:var(--ink);margin-top:8px;font-size:15px;letter-spacing:-.01em}
.related-card .rc-desc{font-size:12.5px;color:var(--ink-soft);margin-top:3px;line-height:1.45}
@media (max-width:460px){.related-grid{grid-template-columns:1fr}}

/* ---------- Footer ---------- */
footer.site{margin-top:46px;padding-top:22px;border-top:1px solid var(--line);
  color:var(--ink-faint);font-size:12.5px;text-align:center;line-height:1.7}
footer.site a{color:var(--ink-soft);text-decoration:none;font-weight:600}
footer.site nav{margin-top:4px}
.disclosure{
  background:var(--card);border:1px dashed var(--line);border-radius:var(--r-sm);
  padding:13px 16px;font-size:12.5px;color:var(--ink-soft);margin-top:24px;line-height:1.6;
}
.disclosure b{color:var(--ink)}

.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);border:0}
.hidden{display:none !important}

/* ---------- Focus & motion polish ---------- */
a:focus-visible,button:focus-visible,summary:focus-visible,.related-card:focus-visible{outline:2px solid var(--brand);outline-offset:2px;border-radius:8px}
.stepper:focus-within{border-color:var(--brand);box-shadow:0 0 0 3px var(--brand-tint)}
@media (prefers-reduced-motion: reduce){
  *,*::before,*::after{animation-duration:.001ms !important;animation-iteration-count:1 !important;transition-duration:.001ms !important;scroll-behavior:auto !important}
}

/* ---------- Visual polish: trust chips, footer legal, prose ---------- */
.trust{display:flex;flex-wrap:wrap;justify-content:center;gap:8px;margin-top:18px}
.trust span{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;color:var(--ink-soft);background:var(--card);border:1px solid var(--line);padding:7px 12px;border-radius:999px;box-shadow:var(--shadow-sm)}
.trust span svg{width:13px;height:13px;color:var(--teal);flex:none}
.foot-legal{margin-top:8px}
.foot-legal a{color:var(--ink-soft);font-weight:600;text-decoration:none}
.foot-legal a:hover{color:var(--ink)}
.foot-fine{margin-top:8px;font-size:11.5px;color:var(--ink-faint);max-width:42em;margin-left:auto;margin-right:auto;line-height:1.6}
.prose h2{font-size:clamp(18px,4.5vw,22px);font-weight:800;letter-spacing:-.01em;margin:28px 0 8px}
.prose h2:first-child{margin-top:0}
.prose p,.prose li{color:var(--ink-soft);font-size:15px;line-height:1.65;margin-bottom:10px}
.prose ul{padding-left:20px;margin-bottom:12px}
.prose a{color:var(--brand-deep);font-weight:600}
.prose .updated{font-size:13px;color:var(--ink-faint);margin-bottom:18px}