/*
Theme Name: GetProKnow
Theme URI: https://getproknow.com
Author: Rajasekaran
Version: 1.0
Text Domain: getproknow
*/

:root{
  --bg:#f5f9ff;
  --bg-soft:#eaf3ff;
  --panel:#ffffff;
  --panel-soft:#f7fbff;
  --text:#0f172a;
  --muted:#5b6b84;
  --line:#dbe7f5;
  --primary:#2563eb;
  --primary-dark:#1d4ed8;
  --secondary:#0ea5e9;
  --accent:#eff6ff;
  --shadow:0 10px 30px rgba(37, 99, 235, 0.08);
  --radius:18px;
  --container:1240px;
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:Arial, Helvetica, sans-serif;
  color:var(--text);
  background:
    radial-gradient(circle at top left, rgba(37,99,235,.10), transparent 28%),
    radial-gradient(circle at top right, rgba(14,165,233,.10), transparent 24%),
    linear-gradient(180deg, #f8fbff 0%, #f3f8ff 100%);
}

a{color:var(--primary);text-decoration:none}
a:hover{color:var(--primary-dark)}

img{max-width:100%;height:auto;display:block}

.container{
  width:100%;
  max-width:var(--container);
  margin:0 auto;
  padding:0 20px;
}

.site-header{
  background:rgba(255,255,255,.92);
  border-bottom:1px solid var(--line);
  position:sticky;
  top:0;
  z-index:1000;
  backdrop-filter:blur(10px);
}

.header-wrap{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:20px;
  min-height:78px;
}

.site-branding a{
  font-size:20px;
  font-weight:800;
  color:var(--primary);
  letter-spacing:.2px;
}

.top-nav{
  display:flex;
  align-items:center;
  gap:10px;
  flex-wrap:wrap;
}

.top-nav a{
  color:var(--text);
  padding:10px 14px;
  border-radius:12px;
  font-size:14px;
  font-weight:600;
}

.top-nav a:hover{
  background:var(--accent);
  color:var(--primary);
}

.btn-primary{
  display:inline-flex;
  align-items:center;
  justify-content:center;
  padding:12px 18px;
  border-radius:14px;
  background:linear-gradient(90deg, var(--primary), var(--secondary));
  color:#fff !important;
  font-weight:700;
  border:none;
  box-shadow:var(--shadow);
  margin-top: 20px;
}

.btn-primary:hover{
  opacity:.95;
  transform:translateY(-1px);
}

.site-main{
  padding:28px 0 40px;
}

.layout{
  display:grid;
  grid-template-columns:minmax(0, 1fr) 320px;
  gap:24px;
}

@media (max-width: 980px){
  .layout{
    grid-template-columns:1fr;
  }
}

.card{
  background:var(--panel);
  border:1px solid var(--line);
  border-radius:var(--radius);
  box-shadow:var(--shadow);
  padding:24px;
}

.card + .card{
  margin-top:20px;
}

.hero{
  background:linear-gradient(135deg, #ffffff 0%, #edf5ff 100%);
}

h1,h2,h3{
  margin:0 0 12px;
  line-height:1.2;
  color:var(--text);
}

h1{font-size:42px}
h2{font-size:28px}
h3{font-size:20px}

p{
  margin:0 0 14px;
  color:var(--muted);
  line-height:1.7;
  font-size:16px;
}

.small{
  font-size:13px;
  color:var(--muted);
}

.kbd, .formula-box, pre{
  background:var(--panel-soft);
  border:1px solid var(--line);
  border-radius:14px;
  padding:16px;
  overflow:auto;
}

.badge{
  display:inline-block;
  padding:7px 12px;
  border-radius:999px;
  background:#eef5ff;
  border:1px solid #cfe0fb;
  color:var(--primary);
  font-size:12px;
  font-weight:700;
}

.hr{
  height:1px;
  background:var(--line);
  margin:18px 0;
}

.grid{
  display:grid;
  grid-template-columns:repeat(12,1fr);
  gap:18px;
}

.col-4{grid-column:span 4}
.col-6{grid-column:span 6}
.col-8{grid-column:span 8}
.col-12{grid-column:span 12}

@media (max-width: 980px){
  .col-4,.col-6,.col-8{grid-column:span 12}
}

.formula-card{
  height:100%;
}

.formula-card h3{
  font-size:20px;
  margin-bottom:10px;
}

.search-box input,
.calc-input{
  width:100%;
  padding:14px 16px;
  border:1px solid #cfe0fb;
  border-radius:14px;
  background:#fff;
  color:var(--text);
  font-size:15px;
  outline:none;
}

.search-box input:focus,
.calc-input:focus{
  border-color:var(--primary);
  box-shadow:0 0 0 4px rgba(37,99,235,.10);
}

.sidebar .card{
  padding:22px;
}

.sidebar h3{
  margin-bottom:10px;
}

.sidebar ul{
  list-style:none;
  padding:0;
  margin:0;
}

.sidebar li{
  padding:10px 0;
  border-bottom:1px dashed var(--line);
}

.sidebar li:last-child{
  border-bottom:none;
}

.calc-grid{
  display:grid;
  grid-template-columns:repeat(2, minmax(0,1fr));
  gap:16px;
}

@media (max-width:700px){
  .calc-grid{
    grid-template-columns:1fr;
  }
}

.calc-result{
  font-size:28px;
  font-weight:800;
  color:var(--primary);
  background:#f4f8ff;
  border:1px solid #d8e6fb;
  border-radius:16px;
  padding:18px;
}

.ad-space{
  background:linear-gradient(135deg, #f8fbff 0%, #eef5ff 100%);
  border:1px dashed #b8d0f5;
  border-radius:16px;
  padding:18px;
  text-align:center;
  color:#6b85ad;
  font-weight:700;
}

.site-footer{
  background:#ffffff;
  border-top:1px solid var(--line);
  margin-top:30px;
}

.footer-wrap{
  padding:24px 0;
  color:var(--muted);
  font-size:14px;
}
.btn-primary {
    margin-top: 20px;
    padding: 12px 24px;
    border-radius: 10px;
    font-weight: 600;
}
.calc-action{
    margin-top: 24px;
}
.calc-grid label{
    display:block;
    margin-bottom:6px;
    font-weight:600;
}
.calc-action{
    margin-top: 24px;
    display:flex;
    align-items:center;
    gap:12px;
}