/* Shaansun Technologies - style.css (responsive + animations) */
:root{
  --primary:#007bff;
  --dark:#0a0a0a;
  --muted:#666;
  --bg:#f7f9fb;
  --card:#ffffff;
  --accent:#0b6cf6;
  --max-width:1140px;
  font-family: 'Poppins', system-ui, -apple-system, 'Segoe UI', Roboto, 'Helvetica Neue', Arial;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--dark);line-height:1.5}
.container{max-width:var(--max-width);margin:0 auto;padding:28px}
.nav{background:rgba(255,255,255,0.95);position:sticky;top:0;z-index:40;backdrop-filter:saturate(120%) blur(6px);box-shadow:0 1px 6px rgba(10,10,10,0.04)}
.nav-inner{display:flex;align-items:center;justify-content:space-between}
.brand{display:flex;align-items:center;gap:10px;font-weight:600;text-decoration:none;color:var(--dark)}
.logo{height:36px;width:36px;object-fit:contain}
.nav-links{display:flex;gap:16px;align-items:center}
.nav a{color:var(--dark);text-decoration:none;padding:10px 6px}
.btn{background:transparent;border:1px solid transparent;padding:8px 12px;border-radius:8px;text-decoration:none}
.btn-primary{background:var(--primary);color:#fff;border:none;padding:10px 14px;border-radius:8px}
.btn-outline{border:1px solid rgba(0,0,0,0.08);color:var(--dark)}
.btn-sm{padding:6px 10px;font-size:14px}
.hamburger{display:none;background:none;border:none;font-size:20px}
.hero{padding:60px 0}
.hero-grid{display:grid;grid-template-columns:1fr 420px;gap:28px;align-items:center}
.hero-content h1{font-size:34px;margin:0 0 12px}
.hero-content p{color:var(--muted);margin-bottom:18px}
.hero-image img{width:100%;border-radius:12px;box-shadow:0 8px 30px rgba(10,10,10,0.08)}
.grid-3{display:grid;grid-template-columns:repeat(3,1fr);gap:18px}
.grid-2{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}
.card{background:var(--card);padding:18px;border-radius:12px;box-shadow:0 6px 18px rgba(10,10,10,0.04)}
.course-card{background:linear-gradient(180deg,#fff,#fbfdff);padding:18px;border-radius:12px}
.section-title{margin-bottom:18px}
.cta{margin:36px 0;padding:28px;border-radius:12px;background:linear-gradient(90deg,rgba(0,123,255,0.08),rgba(11,108,246,0.04))}
.footer{background:#fff;padding:24px 0;margin-top:40px}
.footer-grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:18px}
.footer-bottom{text-align:center;padding:12px 0;color:var(--muted);font-size:14px}
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.contact-form label{display:block;margin-bottom:12px}
.contact-form input,.contact-form textarea{width:100%;padding:10px;border-radius:8px;border:1px solid #e6e6e6}
@media(max-width:900px){
  .hero-grid{grid-template-columns:1fr}
  .grid-3{grid-template-columns:1fr}
  .grid-2{grid-template-columns:1fr}
  .nav-links{display:none}
  .hamburger{display:block}
}

/* Animations */
[data-animate]{opacity:0;transform:translateY(12px);transition:opacity 700ms cubic-bezier(.2,.8,.2,1),transform 700ms cubic-bezier(.2,.8,.2,1)}
[data-animate].is-visible{opacity:1;transform:none}

/* small tweaks */
.section-title{font-size:22px}