:root{
  --bg:#f6f7fb;--surface:#ffffff;--surface2:#f0f2f7;--surface3:#e9ecf4;
  --text:#111827;--muted:#667085;--line:#e2e6ee;
  --primary:#635bff;--primary2:#8b5cf6;--accent:#06b6d4;
  --soft:#eeedff;--soft2:#ecfeff;--danger:#dc2626;
  --shadow-sm:0 8px 24px rgba(20,28,50,.06);
  --shadow:0 22px 60px rgba(20,28,50,.10);
}
[data-theme="dark"]{
  --bg:#0b0f16;--surface:#121924;--surface2:#1a2230;--surface3:#232d3c;
  --text:#f6f7fb;--muted:#9ca8b8;--line:#293445;
  --primary:#8b87ff;--primary2:#a78bfa;--accent:#22d3ee;
  --soft:#25264b;--soft2:#102b31;
  --shadow-sm:0 8px 24px rgba(0,0,0,.22);--shadow:0 22px 60px rgba(0,0,0,.28);
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:
 radial-gradient(circle at 15% -10%,color-mix(in srgb,var(--primary) 10%,transparent),transparent 34%),
 var(--bg);color:var(--text);font:15px/1.55 Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
button,input,select,textarea{font:inherit}
button{cursor:pointer}
a{color:inherit;text-decoration:none}
.hidden{display:none!important}
kbd{display:inline-flex;align-items:center;border:1px solid var(--line);background:var(--surface2);border-radius:7px;padding:2px 7px;color:var(--muted);font-size:10px;box-shadow:inset 0 -1px 0 var(--line)}
.site-header{position:sticky;top:0;z-index:30;height:72px;display:flex;align-items:center;justify-content:space-between;gap:16px;max-width:1280px;margin:auto;padding:0 24px;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:blur(18px);border-bottom:1px solid color-mix(in srgb,var(--line) 70%,transparent)}
.brand{display:flex;align-items:center;gap:10px;min-width:0}
.brand-logo{width:48px;height:48px;display:block;filter:drop-shadow(0 7px 16px rgba(99,91,255,.2))}
.brand-text strong{display:block;font-size:18px;line-height:1.05;letter-spacing:-.02em}
.brand-text small{display:block;color:var(--muted);font-size:10px;margin-top:3px}
.header-actions{display:flex;align-items:center;gap:7px}
.header-link,.theme-btn,.soft-btn,.text-action,.back-btn,.fav-btn{border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:12px;min-height:42px;padding:0 14px}
.header-link{font-size:12px;font-weight:800}
.theme-btn,.fav-btn{width:42px;padding:0;font-size:19px}
main{max-width:1280px;margin:auto;padding:0 24px 58px}
.hero{display:grid;grid-template-columns:minmax(0,1.12fr) minmax(320px,.62fr);gap:42px;align-items:center;padding:56px 0 36px}
.hero-badges{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:15px}
.hero-badges span{border:1px solid var(--line);background:var(--surface);border-radius:999px;padding:6px 10px;color:var(--muted);font-size:10px;font-weight:700}
.hero-badges b{color:var(--primary)}
.hero h1{font-size:clamp(48px,6.2vw,78px);line-height:.94;letter-spacing:-.06em;margin:0 0 16px}
.hero h1 span{background:linear-gradient(100deg,var(--primary),var(--primary2),var(--accent));-webkit-background-clip:text;background-clip:text;color:transparent}
.hero-copy>p{font-size:17px;color:var(--muted);margin:0 0 20px}
.smart-search-wrap{max-width:760px}
.main-search{height:62px;display:flex;align-items:center;gap:11px;background:var(--surface);border:1px solid var(--line);border-radius:17px;padding:0 14px;box-shadow:var(--shadow-sm)}
.main-search:focus-within{border-color:var(--primary);box-shadow:0 0 0 4px var(--soft),var(--shadow-sm)}
.search-icon{font-size:26px;color:var(--muted)}
.main-search input{flex:1;min-width:0;border:0;outline:0;background:transparent;color:var(--text);font-size:16px}
.smart-answer{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:8px;background:linear-gradient(135deg,var(--soft),var(--soft2));border:1px solid color-mix(in srgb,var(--primary) 22%,var(--line));border-radius:13px;padding:11px 13px}
.smart-answer span{font-size:11px;color:var(--muted);font-weight:750}
.smart-answer strong{font-size:18px;color:var(--primary);word-break:break-word}
.quick-links{display:flex;gap:7px;flex-wrap:wrap;margin-top:12px}
.quick-links button{border:1px solid transparent;background:var(--soft);color:var(--primary);font-size:11px;font-weight:850;border-radius:999px;padding:7px 11px}
.quick-links button:hover{border-color:color-mix(in srgb,var(--primary) 28%,transparent)}
.quick-calc{position:relative;overflow:hidden;background:linear-gradient(160deg,var(--surface),color-mix(in srgb,var(--soft) 45%,var(--surface)));border:1px solid var(--line);border-radius:26px;padding:17px;box-shadow:var(--shadow)}
.quick-calc:before{content:"";position:absolute;width:170px;height:170px;border-radius:999px;background:color-mix(in srgb,var(--primary) 13%,transparent);right:-70px;top:-85px;pointer-events:none}
.quick-calc-head{position:relative;display:flex;justify-content:space-between;align-items:center;gap:10px}
.quick-calc-head small{display:block;color:var(--muted);font-size:9px;font-weight:850;letter-spacing:.14em}
.quick-calc-head strong{display:block;font-size:13px}
.quick-calc-head button{height:38px;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:10px;padding:0 12px}
.quick-screen{position:relative;min-height:105px;margin:13px 0 10px;padding:15px;border:1px solid var(--line);border-radius:17px;background:var(--bg);display:flex;flex-direction:column;align-items:flex-end;justify-content:flex-end;overflow:hidden}
.quick-screen span{color:var(--muted);word-break:break-all}
.quick-screen strong{font-size:38px;line-height:1.03;letter-spacing:-.045em;word-break:break-all}
.quick-pad{display:grid;grid-template-columns:repeat(4,1fr);gap:8px}
.quick-pad button{height:49px;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:12px;font-weight:900}
.quick-pad .op{background:var(--soft);color:var(--primary);border-color:transparent}
.quick-pad .equal{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff;border-color:transparent}
.quick-footer{display:flex;justify-content:space-between;color:var(--muted);font-size:9px;margin-top:9px}
.section{margin:46px 0}
.section-heading,.tools-head{display:flex;justify-content:space-between;align-items:end;gap:16px;margin-bottom:17px}
.eyebrow{display:block;color:var(--primary);font-size:9px;font-weight:950;letter-spacing:.16em;text-transform:uppercase}
.section-heading h2,.tools-head h2{font-size:30px;line-height:1.08;letter-spacing:-.038em;margin:5px 0 0}
.tools-head p{font-size:11px;color:var(--muted);margin:5px 0 0}
.text-action{border:0;background:transparent;color:var(--primary);font-size:12px;font-weight:850;padding:0}
.popular-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:11px}
.popular-card{position:relative;min-height:108px;display:flex;gap:11px;align-items:flex-start;text-align:left;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:18px;padding:15px;transition:.18s}
.popular-card:hover,.category-card:hover,.tool-card:hover{transform:translateY(-3px);border-color:color-mix(in srgb,var(--primary) 55%,var(--line));box-shadow:var(--shadow-sm)}
.popular-icon{width:41px;height:41px;display:grid;place-items:center;flex:0 0 auto;border-radius:12px;background:linear-gradient(135deg,var(--soft),var(--soft2));color:var(--primary);font-weight:950;font-size:15px}
.popular-card strong{display:block;font-size:13px;line-height:1.25}
.popular-card small{display:block;color:var(--muted);font-size:10px;line-height:1.35;margin-top:4px;padding-right:12px}
.popular-arrow{position:absolute;right:12px;top:12px;color:var(--muted);font-size:11px}
.category-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:11px}
.category-card{position:relative;min-height:154px;text-align:left;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:19px;padding:17px;transition:.18s}
.category-icon{width:42px;height:42px;display:grid;place-items:center;border-radius:13px;background:var(--surface2);font-size:22px;margin-bottom:18px}
.category-count{position:absolute;right:13px;top:13px;background:var(--surface2);color:var(--muted);border-radius:999px;padding:4px 8px;font-size:9px;font-weight:850}
.category-card h3{font-size:15px;margin:0 0 4px;letter-spacing:-.015em}
.category-card p{margin:0;color:var(--muted);font-size:10.5px;line-height:1.4}
.category-examples{display:block;margin-top:9px;color:var(--primary);font-size:10px;font-weight:800}
.tools-section{padding-top:8px}
.tools-head{align-items:center}
.soft-btn{background:var(--surface2);border:0;font-weight:800;font-size:11px}
.filter-pills{display:flex;gap:7px;overflow-x:auto;padding:1px 0 12px;scrollbar-width:none}
.filter-pills::-webkit-scrollbar{display:none}
.filter-pill{white-space:nowrap;border:1px solid var(--line);background:var(--surface);color:var(--muted);border-radius:999px;padding:8px 11px;font-size:10.5px;font-weight:800}
.filter-pill.active{background:var(--text);border-color:var(--text);color:var(--bg)}
.tool-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px}
.tool-card{position:relative;min-height:150px;text-align:left;border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:17px;padding:16px;transition:.18s}
.tool-icon{width:39px;height:39px;display:grid;place-items:center;border-radius:11px;background:var(--surface2);font-weight:950;margin-bottom:16px}
.tool-tag{position:absolute;top:11px;right:11px;border-radius:999px;background:var(--soft);color:var(--primary);font-size:8px;font-weight:950;padding:4px 7px;text-transform:uppercase}
.tool-card h3{font-size:13.5px;line-height:1.25;margin:0 0 5px}
.tool-card p{font-size:10.5px;line-height:1.42;color:var(--muted);margin:0 0 12px}
.tool-open{position:absolute;bottom:13px;left:16px;color:var(--primary);font-size:9.5px;font-weight:850}
.empty{border:1px dashed var(--line);background:var(--surface);border-radius:17px;padding:44px;text-align:center}
.empty strong{display:block}.empty span{display:block;color:var(--muted);font-size:11px;margin-top:4px}
.saved-grid{display:grid;grid-template-columns:1fr 1fr;gap:11px}
.saved-card{background:var(--surface);border:1px solid var(--line);border-radius:17px;padding:18px}
.saved-card h3{font-size:18px;margin:4px 0 12px}
.saved-list{display:flex;gap:7px;flex-wrap:wrap}
.saved-btn{border:1px solid var(--line);background:var(--bg);color:var(--text);border-radius:9px;padding:8px 10px;font-size:10.5px}
.muted{color:var(--muted);font-size:11px}
.calc-page{padding-top:23px}
.calc-topline{display:flex;justify-content:space-between;align-items:center;margin-bottom:13px}
.back-btn{font-weight:800}
.calc-layout{display:grid;grid-template-columns:minmax(0,1fr) 275px;gap:15px;align-items:start}
.calc-card{background:var(--surface);border:1px solid var(--line);border-radius:23px;padding:27px;min-width:0;box-shadow:var(--shadow-sm)}
.calc-titlebar{border-bottom:1px solid var(--line);padding-bottom:19px;margin-bottom:22px}
.calc-titlebar h1{font-size:34px;letter-spacing:-.04em;margin:5px 0 6px}
.calc-titlebar p{margin:0;color:var(--muted);font-size:12px}
.calc-sidebar{display:grid;gap:10px}
.side-box{background:var(--surface);border:1px solid var(--line);border-radius:17px;padding:15px}
.related{display:grid;gap:7px;margin-top:10px}
.related button{border:1px solid var(--line);background:var(--bg);color:var(--text);border-radius:9px;padding:9px 10px;text-align:left;font-size:10.5px}
.side-mini strong{font-size:12px}.side-mini p{margin:5px 0 0;color:var(--muted);font-size:10px}
.info-panel{margin-top:24px;border:1px solid var(--line);background:var(--bg);border-radius:14px;padding:0 14px}
.info-panel summary{cursor:pointer;padding:13px 0;font-size:12px;font-weight:850}
.info-panel p{color:var(--muted);font-size:11px;line-height:1.65;margin:0 0 14px}
.form{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:13px}
.field{display:grid;gap:6px;min-width:0}
.field.full,.actions,.result,.note,.tapstage,.scipad,.result-details{grid-column:1/-1}
.field label{font-size:11px;font-weight:850}
.field small{color:var(--muted);font-size:10px}
input[type=number],input[type=text],input[type=date],input[type=time],input[type=datetime-local],select,textarea{width:100%;height:49px;border:1px solid var(--line);border-radius:12px;background:var(--bg);color:var(--text);padding:0 12px;outline:none;font-size:16px}
textarea{height:112px;padding:12px;resize:vertical}
input:focus,select:focus,textarea:focus{border-color:var(--primary);box-shadow:0 0 0 3px var(--soft)}
.actions{display:flex;gap:8px;flex-wrap:wrap;margin-top:2px}
.primary,.secondary{height:44px;border:0;border-radius:11px;padding:0 17px;font-weight:900}
.primary{background:linear-gradient(135deg,var(--primary),var(--primary2));color:#fff}
.secondary{background:var(--surface2);color:var(--text)}
.note{border-left:3px solid var(--primary);background:var(--surface2);padding:10px 12px;border-radius:0 9px 9px 0;color:var(--muted);font-size:10.5px}
.result{position:relative;background:linear-gradient(135deg,var(--soft),color-mix(in srgb,var(--soft2) 55%,var(--soft)));border:1px solid color-mix(in srgb,var(--primary) 20%,var(--line));border-radius:16px;padding:16px}
.result-head{display:flex;align-items:center;justify-content:space-between;gap:10px}
.result small{display:block;color:var(--muted);font-size:9px;font-weight:950;text-transform:uppercase;letter-spacing:.08em}
.copy-result{height:28px;border:1px solid var(--line);background:var(--surface);color:var(--muted);border-radius:8px;padding:0 9px;font-size:9px;font-weight:800}
.big{font-size:34px;font-weight:950;letter-spacing:-.045em;word-break:break-word;margin-top:2px}
.rgrid{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:7px;margin-top:11px}
.rgrid>div{background:var(--surface);border-radius:9px;padding:9px}
.rgrid span{display:block;color:var(--muted);font-size:9px}.rgrid b{font-size:12px;word-break:break-word}
.result-details{border:1px solid var(--line);border-radius:12px;background:var(--bg);padding:0 12px}
.result-details summary{cursor:pointer;padding:11px 0;font-size:10.5px;font-weight:850}
.table-wrap{overflow:auto;padding-bottom:10px}
table{width:100%;border-collapse:collapse;font-size:10px;white-space:nowrap}
th,td{padding:8px;border-bottom:1px solid var(--line);text-align:right}th:first-child,td:first-child{text-align:left}
.tapdisplay{min-height:120px;border:1px solid var(--line);background:var(--bg);border-radius:17px;display:flex;align-items:center;justify-content:flex-end;padding:15px;font-size:clamp(38px,8vw,70px);font-weight:900;overflow:auto}
.tappad{display:grid;grid-template-columns:repeat(3,1fr);gap:8px}.tappad button{height:60px;border:1px solid var(--line);background:var(--surface2);color:var(--text);border-radius:13px;font-size:21px;font-weight:900}
.counter{text-align:center;font-size:76px;font-weight:900}.counterbtn{height:82px!important;font-size:25px!important}
.scipad{display:grid;grid-template-columns:repeat(6,1fr);gap:7px}.scipad button{height:43px;border:1px solid var(--line);background:var(--surface2);color:var(--text);border-radius:9px;font-weight:800}
.canvas{width:100%;height:390px;border:1px solid var(--line);border-radius:14px;background:var(--bg)}
.graph-inputs{display:grid;grid-template-columns:repeat(3,1fr);gap:7px}
.graph-inputs input:nth-child(1){border-left:4px solid var(--primary)}
.graph-inputs input:nth-child(2){border-left:4px solid #0ea5e9}
.graph-inputs input:nth-child(3){border-left:4px solid #f59e0b}
.matrix{display:grid;grid-template-columns:repeat(3,1fr);gap:6px}.matrix input{text-align:center}
.checks{display:flex;gap:8px;flex-wrap:wrap}.badge{display:inline-flex;align-items:center;gap:5px;border-radius:999px;padding:5px 9px;background:var(--surface2);font-size:10px;color:var(--muted)}
.mono-result{font-family:ui-monospace,SFMono-Regular,Menlo,monospace;font-size:16px;word-break:break-all}
.seo-static{margin-top:14px}
.seo-static details{border-top:1px solid var(--line)}
.seo-static summary{cursor:pointer;padding:14px 0;font-size:11px;font-weight:850;color:var(--muted)}
.seo-static .seo-inner{padding:0 0 14px;color:var(--muted);font-size:10.5px;line-height:1.7}
.seo-static .seo-inner p{margin:0 0 9px}.seo-static .seo-links{display:flex;flex-wrap:wrap;gap:6px}.seo-static .seo-links a{border:1px solid var(--line);border-radius:999px;padding:6px 9px;background:var(--bg);font-size:9.5px}
.footer{max-width:1280px;margin:10px auto 0;padding:26px 24px 40px;border-top:1px solid var(--line);display:flex;justify-content:space-between;gap:18px;color:var(--muted);font-size:10px}.footer strong{color:var(--text)}
.toast{position:fixed;left:50%;bottom:20px;transform:translate(-50%,25px);opacity:0;pointer-events:none;background:var(--text);color:var(--bg);border-radius:10px;padding:10px 14px;font-size:10.5px;transition:.2s;z-index:80}.toast.show{opacity:1;transform:translate(-50%,0)}
@media(max-width:1050px){.popular-grid,.category-grid,.tool-grid{grid-template-columns:repeat(3,1fr)}.calc-layout{grid-template-columns:1fr}.calc-sidebar{grid-template-columns:1fr 1fr}}
@media(max-width:760px){
 .site-header,main{padding-left:14px;padding-right:14px}.site-header{height:66px}.header-link{display:none}
 .hero{grid-template-columns:1fr;padding:34px 0 28px;gap:24px}.hero h1{font-size:48px}.hero-copy>p{font-size:15px}.main-search{height:58px}
 .popular-grid,.category-grid,.tool-grid{grid-template-columns:repeat(2,1fr)}
 .saved-grid{grid-template-columns:1fr}.calc-sidebar{grid-template-columns:1fr}.rgrid{grid-template-columns:1fr 1fr}.scipad{grid-template-columns:repeat(4,1fr)}
}
@media(max-width:520px){
 .brand-text small{display:none}.brand-logo{width:44px;height:44px}.hero h1{font-size:40px}.hero-badges span:nth-child(3){display:none}
 .main-search kbd{display:none}.quick-calc{padding:12px;border-radius:20px}.quick-footer{display:none}
 .popular-grid{grid-template-columns:1fr 1fr}.popular-card{display:block;min-height:128px;padding:13px}.popular-icon{margin-bottom:9px;width:36px;height:36px}.popular-card small{font-size:9.5px}.popular-arrow{top:10px;right:10px}
 .category-grid{grid-template-columns:1fr 1fr}.category-card{min-height:148px;padding:13px}.category-icon{margin-bottom:14px}.category-card p{font-size:9.8px}.category-examples{display:none}
 .tool-grid{grid-template-columns:1fr}.tool-card{min-height:126px}.form{grid-template-columns:1fr}.field.full,.actions,.result,.note,.tapstage,.scipad,.result-details{grid-column:1}
 .calc-card{padding:17px}.calc-titlebar h1{font-size:28px}.calc-topline{position:sticky;top:66px;z-index:15;background:color-mix(in srgb,var(--bg) 90%,transparent);backdrop-filter:blur(12px);padding:7px 0}
 .rgrid{grid-template-columns:1fr}.canvas{height:300px}.graph-inputs{grid-template-columns:1fr}.footer{flex-direction:column}
}


/* KALKUVIA_ADSTERRA_CSS */

.kv-ad {
  width: 100%;
  margin: 30px auto;
  text-align: center;
  overflow: hidden;
}

.kv-ad-label {
  margin-bottom: 7px;
  font-size: 10px;
  color: #8a93a5;
  text-transform: uppercase;
  letter-spacing: .08em;
}

.kv-ad-native {
  min-height: 80px;
}

.kv-ad-desktop {
  min-height: 90px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

@media (max-width: 780px) {
  .kv-ad-desktop {
    display: none;
  }
}