:root{
  --bg:#F6F5F1;
  --surface:#FFFFFF;
  --surface-2:#EFEEE8;
  --ink:#1B221E;
  --ink-soft:#5B655F;
  --line:#DBD9D0;
  --accent:#0B6E64;
  --accent-ink:#F6FBF9;
  --accent-soft:#DCEEEA;
  --warn:#B5541A;
  --shadow: 0 1px 2px rgba(27,34,30,.06), 0 8px 24px -12px rgba(27,34,30,.18);
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    --bg:#12140F; --surface:#1B1E18; --surface-2:#242821; --ink:#EDEEE7; --ink-soft:#A2A99C;
    --line:#333730; --accent:#4FBFAF; --accent-ink:#0B1A17; --accent-soft:#20302B; --warn:#E3924F;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 12px 28px -14px rgba(0,0,0,.6);
  }
}
:root[data-theme="dark"]{
  --bg:#12140F; --surface:#1B1E18; --surface-2:#242821; --ink:#EDEEE7; --ink-soft:#A2A99C;
  --line:#333730; --accent:#4FBFAF; --accent-ink:#0B1A17; --accent-soft:#20302B; --warn:#E3924F;
  --shadow: 0 1px 2px rgba(0,0,0,.4), 0 12px 28px -14px rgba(0,0,0,.6);
}
*{box-sizing:border-box;}
body{ margin:0; background:var(--bg); color:var(--ink); font-family:'IBM Plex Sans', system-ui, sans-serif; line-height:1.55; }
h1,h2,h3{ font-family:'Fraunces', Georgia, serif; text-wrap:balance; margin:0; letter-spacing:-0.01em; }
.mono{ font-family:'IBM Plex Mono', ui-monospace, monospace; font-variant-numeric: tabular-nums; }
.wrap{ max-width:1040px; margin:0 auto; padding:0 24px; }
a{ color:inherit; }
header.top{ border-bottom:1px solid var(--line); padding:18px 0; }
header.top .wrap{ display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap; }
.brand{ display:flex; align-items:center; gap:10px; font-weight:600; font-size:1.15rem; text-decoration:none; }
.brand .mark{ width:30px; height:30px; border-radius:8px; background:var(--accent); color:var(--accent-ink);
  display:flex; align-items:center; justify-content:center; font-family:'Fraunces', serif; font-weight:700; font-size:1rem; flex:none; }
nav.toollinks{ display:flex; gap:22px; font-size:.92rem; color:var(--ink-soft); flex-wrap:wrap; }
nav.toollinks a{ text-decoration:none; }
nav.toollinks a:hover{ color:var(--accent); }
.hero{ padding:56px 0 40px; }
.eyebrow{ display:inline-block; font-size:.78rem; letter-spacing:.08em; text-transform:uppercase;
  color:var(--accent); background:var(--accent-soft); padding:4px 10px; border-radius:100px; margin-bottom:16px; font-weight:600; }
.hero h1{ font-size:clamp(2rem, 4.2vw, 3rem); font-weight:600; max-width:20ch; }
.hero p{ color:var(--ink-soft); max-width:60ch; margin-top:14px; font-size:1.05rem; }
.hero .meta-row{ display:flex; gap:26px; margin-top:26px; flex-wrap:wrap; }
.meta-item{ font-size:.85rem; color:var(--ink-soft); display:flex; align-items:center; gap:7px; }
.dot{ width:6px; height:6px; border-radius:50%; background:var(--accent); flex:none; }
.ad-slot{ border:1px dashed var(--line); border-radius:10px; background:var(--surface-2); color:var(--ink-soft);
  font-size:.78rem; letter-spacing:.03em; text-transform:uppercase; display:flex; align-items:center; justify-content:center; padding:14px; margin:40px 0; }
.tool{ padding:44px 0; border-top:1px solid var(--line); }
.tool-head{ display:flex; align-items:baseline; gap:14px; margin-bottom:22px; flex-wrap:wrap; }
.tool-head h2{ font-size:1.55rem; font-weight:600; }
.tool-head .tag{ font-size:.72rem; text-transform:uppercase; letter-spacing:.07em; color:var(--ink-soft);
  border:1px solid var(--line); border-radius:100px; padding:3px 9px; }
.tool-desc{ color:var(--ink-soft); max-width:60ch; margin-bottom:26px; font-size:.97rem; }
.panel{ background:var(--surface); border:1px solid var(--line); border-radius:14px; box-shadow:var(--shadow); padding:26px; }
.cols{ display:grid; grid-template-columns:1.1fr 1fr; gap:28px; }
@media (max-width:760px){ .cols{ grid-template-columns:1fr; } }
.dropzone{ border:1.5px dashed var(--line); border-radius:12px; padding:30px 20px; text-align:center; cursor:pointer;
  transition:border-color .15s, background .15s; background:var(--surface-2); }
.dropzone.drag{ border-color:var(--accent); background:var(--accent-soft); }
.dropzone p{ margin:0; color:var(--ink-soft); font-size:.92rem; }
.dropzone strong{ color:var(--ink); }
.dropzone input{ display:none; }
.slider-row{ margin-top:20px; }
.slider-row label{ display:flex; justify-content:space-between; font-size:.85rem; color:var(--ink-soft); margin-bottom:8px; }
.slider-row .val{ color:var(--accent); font-weight:600; }
input[type="range"]{ width:100%; accent-color:var(--accent); }
.stat-row{ display:flex; gap:14px; margin-top:20px; flex-wrap:wrap; }
.stat{ flex:1; min-width:120px; background:var(--surface-2); border:1px solid var(--line); border-radius:10px; padding:12px 14px; }
.stat .k{ font-size:.72rem; text-transform:uppercase; letter-spacing:.06em; color:var(--ink-soft); }
.stat .v{ font-size:1.15rem; font-weight:600; margin-top:2px; }
.stat .v.good{ color:var(--accent); }
.preview-box{ border:1px solid var(--line); border-radius:12px; background:var(--surface-2);
  display:flex; align-items:center; justify-content:center; min-height:220px; overflow:hidden; position:relative; }
.preview-box img{ max-width:100%; max-height:280px; display:block; border-radius:6px; }
.preview-box .ph{ color:var(--ink-soft); font-size:.85rem; text-align:center; padding:20px; }
.btn{ appearance:none; border:none; border-radius:9px; padding:11px 18px; background:var(--accent); color:var(--accent-ink);
  font-weight:600; font-size:.92rem; cursor:pointer; font-family:inherit; display:inline-flex; align-items:center; gap:8px; text-decoration:none; }
.btn:hover{ filter:brightness(1.06); }
.btn:focus-visible, a:focus-visible, input:focus-visible{ outline:2px solid var(--accent); outline-offset:2px; }
.btn[disabled]{ opacity:.5; cursor:not-allowed; }
.btn.ghost{ background:transparent; color:var(--ink); border:1px solid var(--line); }
.field{ margin-bottom:16px; }
.field label{ display:block; font-size:.82rem; color:var(--ink-soft); margin-bottom:6px; }
.field input[type="text"], .field select{ width:100%; padding:10px 12px; border-radius:9px; border:1px solid var(--line);
  background:var(--surface-2); color:var(--ink); font-family:inherit; font-size:.95rem; }
.qr-preview{ display:flex; flex-direction:column; align-items:center; justify-content:center; gap:16px;
  border:1px solid var(--line); border-radius:12px; background:var(--surface-2); padding:24px; min-height:220px; }
#qrcanvas-holder{ background:#fff; padding:10px; border-radius:8px; line-height:0; }
#qrcanvas-holder img{ display:block; }
.swatches{ display:flex; gap:8px; }
.swatch{ width:26px; height:26px; border-radius:50%; border:2px solid var(--surface); box-shadow:0 0 0 1px var(--line); cursor:pointer; }
.swatch.active{ box-shadow:0 0 0 2px var(--accent); }
footer.site-footer{ border-top:1px solid var(--line); padding:30px 0 46px; margin-top:20px; color:var(--ink-soft); font-size:.85rem; }
footer.site-footer .wrap{ display:flex; justify-content:space-between; flex-wrap:wrap; gap:12px; }
footer.site-footer .footer-links{ display:flex; gap:16px; flex-wrap:wrap; }
footer.site-footer a{ text-decoration:none; }
footer.site-footer a:hover{ color:var(--accent); }

/* calculator categories (homepage hub) */
.category{ padding:44px 0; border-top:1px solid var(--line); }
.category-head{ margin-bottom:26px; max-width:64ch; }
.category-head h2{ font-size:1.6rem; font-weight:600; }
.category-head p{ color:var(--ink-soft); margin-top:8px; font-size:.95rem; }
.calc-grid{ display:grid; grid-template-columns:repeat(auto-fill, minmax(270px, 1fr)); gap:18px; }
.calc-card{ background:var(--surface); border:1px solid var(--line); border-radius:14px; padding:20px;
  box-shadow:var(--shadow); display:flex; flex-direction:column; }
.calc-card h3{ font-size:1rem; font-weight:600; margin-bottom:14px; font-family:'Fraunces', serif; }
.calc-field{ margin-bottom:10px; }
.calc-field label{ display:block; font-size:.74rem; color:var(--ink-soft); margin-bottom:4px; }
.calc-field input, .calc-field select{ width:100%; padding:8px 10px; border-radius:8px; border:1px solid var(--line);
  background:var(--surface-2); color:var(--ink); font-family:inherit; font-size:.87rem; }
.calc-row2{ display:grid; grid-template-columns:1fr 1fr; gap:8px; }
.calc-result{ margin-top:auto; padding-top:12px; border-top:1px dashed var(--line); }
.calc-result .big{ font-size:1.3rem; font-weight:700; color:var(--accent); font-family:'IBM Plex Mono', monospace; }
.calc-result .rlabel{ font-size:.7rem; text-transform:uppercase; letter-spacing:.05em; color:var(--ink-soft); }
.calc-result .sub{ font-size:.8rem; color:var(--ink-soft); margin-top:4px; line-height:1.4; }
.calc-note{ font-size:.7rem; color:var(--ink-soft); margin-top:8px; opacity:.85; }
.worldclock{ display:grid; grid-template-columns:repeat(auto-fill, minmax(130px,1fr)); gap:10px; margin-top:6px; }
.worldclock .wc-item{ background:var(--surface-2); border:1px solid var(--line); border-radius:9px; padding:10px 12px; text-align:center; }
.worldclock .wc-city{ font-size:.72rem; color:var(--ink-soft); text-transform:uppercase; letter-spacing:.04em; }
.worldclock .wc-time{ font-family:'IBM Plex Mono', monospace; font-size:1.05rem; font-weight:600; margin-top:4px; }
.calc-card.wide{ grid-column: span 2; }
@media (max-width:600px){ .calc-card.wide{ grid-column: span 1; } }
.copybtn{ margin-top:10px; }
textarea.wc-textarea{ width:100%; min-height:110px; padding:10px 12px; border-radius:9px; border:1px solid var(--line);
  background:var(--surface-2); color:var(--ink); font-family:inherit; font-size:.9rem; resize:vertical; }

/* Hub: tool preview card (link, not interactive) */
.tool-preview{ background:var(--surface); border:1px solid var(--line); border-radius:14px; padding:20px;
  box-shadow:var(--shadow); display:flex; flex-direction:column; gap:10px; text-decoration:none; color:var(--ink);
  transition:border-color .15s, transform .15s; }
.tool-preview:hover{ border-color:var(--accent); transform:translateY(-2px); }
.tool-preview h3{ font-size:1rem; font-weight:600; font-family:'Fraunces', serif; }
.tool-preview p{ font-size:.85rem; color:var(--ink-soft); margin:0; flex:1; }
.tool-preview .open{ font-size:.78rem; color:var(--accent); font-weight:600; }

/* Tool page: breadcrumbs, instructions, FAQ, related */
.breadcrumbs{ font-size:.82rem; color:var(--ink-soft); padding:18px 0 0; }
.breadcrumbs a{ text-decoration:none; }
.breadcrumbs a:hover{ color:var(--accent); }
.breadcrumbs .sep{ margin:0 6px; opacity:.6; }
.tool-page-head{ padding:28px 0 8px; }
.tool-page-head .eyebrow{ margin-bottom:14px; }
.tool-page-head h1{ font-size:clamp(1.7rem, 3.4vw, 2.4rem); font-weight:600; max-width:24ch; }
.tool-page-head .lede{ color:var(--ink-soft); max-width:62ch; margin-top:12px; font-size:1rem; }
.content-block{ padding:40px 0; border-top:1px solid var(--line); max-width:70ch; }
.content-block h2{ font-size:1.3rem; font-weight:600; margin-bottom:14px; }
.content-block ol, .content-block ul{ padding-left:1.3em; color:var(--ink-soft); font-size:.95rem; }
.content-block li{ margin-bottom:8px; }
.faq-item{ border-top:1px solid var(--line); padding:16px 0; }
.faq-item:first-child{ border-top:none; }
.faq-item h3{ font-size:.98rem; font-weight:600; margin-bottom:6px; }
.faq-item p{ color:var(--ink-soft); font-size:.9rem; margin:0; }
.related-tools{ padding:36px 0 50px; border-top:1px solid var(--line); }
.related-tools h2{ font-size:1.2rem; font-weight:600; margin-bottom:18px; }
.related-grid{ display:grid; grid-template-columns:repeat(auto-fill, minmax(220px,1fr)); gap:14px; }
.related-grid a{ display:block; background:var(--surface); border:1px solid var(--line); border-radius:10px;
  padding:14px 16px; font-size:.88rem; font-weight:600; text-decoration:none; color:var(--ink); }
.related-grid a:hover{ border-color:var(--accent); color:var(--accent); }

/* Privacy / static content pages */
.static-page{ padding:40px 0 60px; max-width:70ch; }
.static-page h1{ font-size:2rem; font-weight:600; margin-bottom:20px; }
.static-page h2{ font-size:1.2rem; font-weight:600; margin-top:32px; margin-bottom:10px; }
.static-page p{ color:var(--ink-soft); font-size:.95rem; margin-bottom:12px; }
.static-page ul{ color:var(--ink-soft); font-size:.95rem; padding-left:1.3em; }
.static-page li{ margin-bottom:6px; }