/* Warna tema */
:root{
  --bg:#f7fbff;
  --primary-1:#0ea5ff;
  --primary-2:#3b82f6;
  --accent:#0369a1;
  --muted:#64748b;
}

*{box-sizing:border-box}
html,body{height:100%;margin:0;font-family:Inter, ui-sans-serif, system-ui}
body{background:var(--bg);color:#0f172a}

/* NAV */
.site-header{
  position:sticky;top:0;
  background:rgba(255,255,255,0.92);
  backdrop-filter:blur(4px);
  border-bottom:1px solid rgba(15,23,42,0.05);
}
.nav{
  width:100%;
  padding:14px 18px;
  display:flex;align-items:center;justify-content:center;
}
.brand{
  font-weight:800;color:var(--primary-2);
  font-size:20px;letter-spacing:1px;
}

/* HERO */
.hero{
  width:100%;
  margin:32px auto 20px;
  text-align:center;
  padding:0 12px;
}

/* GAMBAR DI TENGAH */
.hero-wrapper{
  display:flex;
  justify-content:center;
}

.hero-image{
  width:100%;
  max-width:380px;
  height:220px;
  object-fit:cover;
  border-radius:12px;
  display:block;
  margin:auto;
}

/* H1 DI ATAS TOMBOL */
.hero-title h1{
  margin-top:18px;
  font-size:26px;
  line-height:1.25;
  color:var(--accent);
  font-weight:800;
}

/* TOMBOL DI BAWAH H1 */
.hero-buttons{
  margin-top:18px;
  display:flex;
  flex-direction:column;
  align-items:center;
  gap:10px;
}

.btn{
  background:linear-gradient(90deg,var(--primary-1),var(--primary-2));
  border:none;color:white;
  padding:12px 0;
  border-radius:10px;
  font-weight:600;
  cursor:pointer;text-decoration:none;
  font-size:18px;
}

.btn.ghost{
  background:transparent;
  border:1.5px solid var(--primary-2);
  color:var(--accent);
}

/* Tombol selebar gambar */
.hero-btn{
  width:100%;
  max-width:380px;
  text-align:center;
}

/* FOOTER */
.site-footer{
  width:100%;
  padding:20px 12px 28px;
  text-align:center;
  color:var(--muted);
  font-size:14px;
}

/* RESPONSIVE TABLET & DESKTOP */
@media (min-width:768px){
  .hero-image{
    max-width:600px;
    height:400px;
  }
  .hero-btn{
    max-width:600px;
    font-size:20px;
  }
  .hero-title h1{
    font-size:34px;
  }
  .brand{
    font-size:26px;
  }
}