/*
Theme Name: Skillity Up Free BIM Workshop
Theme URI: https://skillityup.in
Author: Skillity Up
Description: Complete Bengali/English landing page theme for 2 Days Free BIM Workshop with Participation Certificate.
Version: 2.0
Text Domain: skillity-up-bim-workshop
*/

:root{
  --primary:#0f766e;
  --primary-dark:#0b5f59;
  --secondary:#0f172a;
  --accent:#facc15;
  --accent-dark:#eab308;
  --bg:#f8fafc;
  --white:#ffffff;
  --muted:#64748b;
  --border:#e2e8f0;
  --soft:#ecfeff;
  --danger:#ef4444;
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: Arial, Helvetica, sans-serif;
  color:var(--secondary);
  background:var(--bg);
  line-height:1.65;
}
a{text-decoration:none}
img{max-width:100%;display:block}
.container{width:min(1140px,92%);margin:auto}

.topbar{
  background:#020617;
  color:#e2e8f0;
  padding:8px 0;
  font-size:14px;
}
.topbar .container{
  display:flex;
  justify-content:space-between;
  gap:14px;
  flex-wrap:wrap;
}
.header{
  background:rgba(255,255,255,.94);
  backdrop-filter: blur(12px);
  border-bottom:1px solid var(--border);
  position:sticky;
  top:0;
  z-index:100;
}
.header-inner{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:18px;
  padding:14px 0;
}
.logo{
  font-size:26px;
  font-weight:900;
  color:var(--primary);
  letter-spacing:-.5px;
}
.logo span{color:var(--secondary)}
.nav{
  display:flex;
  align-items:center;
  gap:18px;
  font-weight:700;
  font-size:14px;
}
.nav a{color:var(--secondary)}
.nav a:hover{color:var(--primary)}
.btn{
  display:inline-flex;
  justify-content:center;
  align-items:center;
  padding:13px 24px;
  border-radius:999px;
  font-weight:800;
  border:none;
  cursor:pointer;
  transition:.25s ease;
}
.btn-primary{background:var(--primary);color:white}
.btn-primary:hover{background:var(--primary-dark);transform:translateY(-2px)}
.btn-yellow{background:var(--accent);color:#111827}
.btn-yellow:hover{background:var(--accent-dark);transform:translateY(-2px)}
.btn-outline{
  border:1px solid rgba(255,255,255,.45);
  color:white;
  background:rgba(255,255,255,.08);
}
.btn-outline:hover{background:rgba(255,255,255,.18)}

.hero{
  position:relative;
  color:white;
  padding:82px 0 56px;
  overflow:hidden;
  background:
    radial-gradient(circle at top right, rgba(250,204,21,.25), transparent 25%),
    linear-gradient(120deg, rgba(15,118,110,.95), rgba(15,23,42,.96)),
    url('https://images.unsplash.com/photo-1503387762-592deb58ef4e?auto=format&fit=crop&w=1800&q=80');
  background-size:cover;
  background-position:center;
}
.hero-grid{
  display:grid;
  grid-template-columns:1.1fr .9fr;
  gap:38px;
  align-items:center;
}
.kicker{
  display:inline-flex;
  align-items:center;
  gap:8px;
  background:rgba(250,204,21,.16);
  border:1px solid rgba(250,204,21,.35);
  color:#fde68a;
  padding:8px 14px;
  border-radius:999px;
  font-weight:800;
  margin-bottom:18px;
}
.hero h1{
  font-size:clamp(38px,5vw,66px);
  line-height:1.05;
  margin:0 0 18px;
  letter-spacing:-1.5px;
}
.hero h1 strong{color:var(--accent)}
.hero p{
  font-size:19px;
  color:#e2e8f0;
  margin:0 0 24px;
  max-width:720px;
}
.hero-actions{display:flex;gap:14px;flex-wrap:wrap;margin:26px 0}
.hero-points{
  display:grid;
  grid-template-columns:repeat(2,1fr);
  gap:12px;
  margin-top:28px;
}
.hero-point{
  background:rgba(255,255,255,.10);
  border:1px solid rgba(255,255,255,.16);
  border-radius:16px;
  padding:13px 14px;
  font-weight:700;
}
.register-card{
  background:white;
  color:var(--secondary);
  border-radius:28px;
  padding:28px;
  box-shadow:0 24px 70px rgba(0,0,0,.28);
}
.register-card h2{
  font-size:30px;
  margin:0 0 6px;
}
.register-card p{color:var(--muted);font-size:15px;margin-bottom:16px}
.form-row input,.form-row select,.form-row textarea{
  width:100%;
  border:1px solid var(--border);
  padding:13px 14px;
  border-radius:14px;
  margin-bottom:10px;
  font-size:15px;
}
.form-note{font-size:13px;color:var(--muted);text-align:center;margin-top:10px}

.stats{
  margin-top:44px;
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:14px;
}
.stat{
  background:rgba(255,255,255,.11);
  border:1px solid rgba(255,255,255,.16);
  border-radius:18px;
  padding:18px;
  text-align:center;
}
.stat b{display:block;font-size:26px;color:var(--accent)}
.stat span{font-size:14px;color:#e2e8f0}

.section{padding:76px 0}
.section-white{background:white}
.section-soft{background:linear-gradient(180deg,#ecfeff,#f8fafc)}
.section-title{
  text-align:center;
  max-width:780px;
  margin:0 auto 42px;
}
.section-title .small{
  color:var(--primary);
  font-weight:900;
  letter-spacing:.5px;
  text-transform:uppercase;
  font-size:13px;
}
.section-title h2{
  font-size:clamp(30px,4vw,46px);
  line-height:1.15;
  margin:8px 0 12px;
  letter-spacing:-.8px;
}
.section-title p{
  color:var(--muted);
  font-size:18px;
}

.cards{
  display:grid;
  grid-template-columns:repeat(3,1fr);
  gap:22px;
}
.card{
  background:white;
  border:1px solid var(--border);
  border-radius:24px;
  padding:26px;
  box-shadow:0 14px 34px rgba(15,23,42,.06);
}
.card-icon{
  width:52px;height:52px;
  display:grid;place-items:center;
  border-radius:16px;
  background:rgba(15,118,110,.10);
  color:var(--primary);
  font-size:25px;
  margin-bottom:14px;
}
.card h3{margin:0 0 8px;font-size:21px}
.card p{margin:0;color:var(--muted)}

.details-grid{
  display:grid;
  grid-template-columns:repeat(4,1fr);
  gap:16px;
}
.detail-box{
  background:white;
  border:1px solid var(--border);
  border-radius:22px;
  padding:22px;
  text-align:center;
}
.detail-box .emoji{font-size:30px;margin-bottom:8px}
.detail-box b{display:block;font-size:18px}
.detail-box span{color:var(--muted);font-size:15px}

.timeline{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:24px;
}
.day-card{
  background:white;
  border-radius:28px;
  border:1px solid var(--border);
  overflow:hidden;
  box-shadow:0 14px 34px rgba(15,23,42,.06);
}
.day-head{
  background:var(--secondary);
  color:white;
  padding:20px 24px;
}
.day-head b{
  color:var(--accent);
  display:block;
  margin-bottom:4px;
}
.day-body{padding:24px}
.day-body ul{padding-left:20px;margin:0}
.day-body li{margin-bottom:10px}

.split{
  display:grid;
  grid-template-columns:.95fr 1.05fr;
  gap:38px;
  align-items:center;
}
.highlight-box{
  background:var(--secondary);
  color:white;
  border-radius:30px;
  padding:34px;
  position:relative;
  overflow:hidden;
}
.highlight-box:after{
  content:"";
  position:absolute;
  width:160px;height:160px;
  border-radius:50%;
  background:rgba(250,204,21,.16);
  right:-60px;top:-60px;
}
.highlight-box h2{font-size:38px;line-height:1.15;margin:0 0 14px}
.highlight-box p{color:#cbd5e1}
.check-list{list-style:none;padding:0;margin:20px 0 0}
.check-list li{
  margin:12px 0;
  padding-left:32px;
  position:relative;
}
.check-list li:before{
  content:"✓";
  position:absolute;
  left:0;top:0;
  width:22px;height:22px;
  background:var(--primary);
  color:white;
  border-radius:50%;
  display:grid;place-items:center;
  font-size:13px;
  font-weight:900;
}

.certificate-preview{
  background:#fff;
  border:8px solid var(--primary);
  border-radius:24px;
  padding:34px;
  text-align:center;
  box-shadow:0 18px 45px rgba(15,23,42,.10);
}
.certificate-preview .seal{
  width:72px;height:72px;
  border-radius:50%;
  background:var(--accent);
  display:grid;
  place-items:center;
  margin:0 auto 14px;
  font-size:32px;
}
.certificate-preview h3{
  color:var(--primary);
  font-size:32px;
  margin:0;
}
.certificate-preview .line{
  height:1px;background:var(--border);margin:22px 0;
}

.faq{
  max-width:850px;
  margin:auto;
}
.faq details{
  background:white;
  border:1px solid var(--border);
  border-radius:18px;
  padding:18px 22px;
  margin-bottom:12px;
}
.faq summary{
  cursor:pointer;
  font-weight:900;
  font-size:17px;
}
.faq p{color:var(--muted);margin-bottom:0}

.final-cta{
  background:
    radial-gradient(circle at bottom left, rgba(250,204,21,.18), transparent 26%),
    linear-gradient(120deg,var(--secondary),#064e3b);
  color:white;
  text-align:center;
}
.final-cta h2{
  font-size:clamp(32px,4vw,52px);
  line-height:1.12;
  margin:0 0 14px;
}
.final-cta p{
  color:#cbd5e1;
  font-size:18px;
  max-width:760px;
  margin:0 auto 26px;
}
.footer{
  background:#020617;
  color:#cbd5e1;
  text-align:center;
  padding:28px 0;
}
.sticky-whatsapp{
  position:fixed;
  right:18px;
  bottom:18px;
  background:#22c55e;
  color:white;
  padding:13px 18px;
  border-radius:999px;
  font-weight:900;
  z-index:200;
  box-shadow:0 12px 30px rgba(0,0,0,.25);
}

@media(max-width:930px){
  .hero-grid,.split,.timeline{grid-template-columns:1fr}
  .cards{grid-template-columns:1fr 1fr}
  .details-grid,.stats{grid-template-columns:1fr 1fr}
  .nav{display:none}
}
@media(max-width:600px){
  .cards,.details-grid,.stats,.hero-points{grid-template-columns:1fr}
  .hero{padding:58px 0 42px}
  .register-card{padding:22px}
  .topbar .container{justify-content:center;text-align:center}
}