:root {
  --primary:#0d6efd;
  --secondary:#0b5ed7;
  --bg:#f4f6f9;
  --card:#ffffff;
  --text:#2c3e50;
  --success:#27ae60;
}
* { box-sizing:border-box; }
body { margin:0; font-family:Poppins,sans-serif; background:var(--bg); color:var(--text); }
a { cursor:pointer; }

/* HEADER */
.header-modern {
  position: fixed;
  width: 100%;
  top: 0;
  left: 0;
  z-index: 999;
  background: linear-gradient(135deg,var(--primary),var(--secondary));
  color:#fff;
  padding:20px 0;
  transition: top 0.3s;
}
/* HEADER MODERN */
.header-modern {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 999;
  background: linear-gradient(135deg,#0d6efd,#0b5ed7);
  color: #fff;
  padding: 20px 0;
  transition: top 0.3s ease; /* auto-hide smooth */
  box-shadow: 0 4px 10px rgba(0,0,0,0.1);
}

/* HEADER CONTAINER */
.header-container {
  max-width: 1200px;
  margin: auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 20px;
  flex-wrap: wrap;
}

/* LOGO */
.logo img {
  max-height: 50px;
  transition: transform 0.3s;
}
.logo img:hover {
  transform: scale(1.05);
}

/* NAVIGATION */
.nav-menu {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 15px;
}
.nav-menu a {
  color: #fff;
  text-decoration: none;
  margin: 0 10px;
  font-weight: 600;
  transition: color 0.3s;
}
.nav-menu a:hover {
  color: #ffe600;
}

/* HEADER BUTTON (CTA) */
.btn-header {
  background: #25D366; /* hijau WhatsApp */
  color: #fff;
  padding: 10px 25px;
  border-radius: 30px;
  font-weight: 600;
  transition: transform 0.2s, box-shadow 0.2s;
}
.btn-header:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.2);
}

/* RESPONSIVE HEADER */
@media (max-width: 768px) {
  .header-container {
    flex-direction: column;
    gap: 15px;
  }
  .nav-menu {
    justify-content: center;
    gap: 10px;
  }
}
@media (max-width: 480px) {
  .nav-menu a {
    margin: 5px;
    font-size: 14px;
  }
  .btn-header {
    padding: 8px 20px;
    font-size: 14px;
  }
}

/* FLOATING WA */
.float-wa { position:fixed; bottom:25px; right:25px; background:#25D366; color:#fff; padding:15px 20px; border-radius:50px; font-weight:600; text-decoration:none; box-shadow:0 8px 20px rgba(0,0,0,0.25); transition:0.2s; z-index:999; }
.float-wa:hover { transform:translateY(-3px); box-shadow:0 12px 25px rgba(0,0,0,0.3); }

/* SECTION */
.section { padding:60px 20px; max-width:1200px; margin:auto; }
.section h2 { text-align:center; margin-bottom:40px; font-size:30px; }
.grid { display:grid; grid-template-columns:repeat(auto-fit,minmax(260px,1fr)); gap:25px; }
.card { background:var(--card); border-radius:18px; padding:30px; text-align:center; box-shadow:0 10px 25px rgba(0,0,0,.1); }
.card.popular { border:3px solid var(--primary); transform:scale(1.03); }
.price { font-size:28px; font-weight:700; margin:15px 0; color:var(--primary); }
.price span { font-size:14px; color:#777; }
.card ul { list-style:none; padding:0; margin:20px 0; }
.card ul li { margin:8px 0; }
.btn { display:inline-block; padding:12px 30px; border-radius:30px; background:var(--primary); color:#fff; text-decoration:none; font-weight:600; transition:.3s; }
.btn:hover { background:var(--secondary); }
.service i { font-size:42px; color:var(--primary); margin-bottom:15px; }
.steps { display:grid; grid-template-columns:repeat(auto-fit,minmax(200px,1fr)); gap:25px; text-align:center; }
.step { background:#fff; padding:25px; border-radius:16px; box-shadow:0 5px 15px rgba(0,0,0,.08); }

/* FOOTER */
.footer-isp { background:#0b5ed7; color:#e0e7ff; padding:60px 0 20px; font-size:14px; }
.footer-grid { max-width:1200px; margin:auto; display:grid; grid-template-columns:repeat(auto-fit,minmax(220px,1fr)); gap:40px; }
.footer-col h4 { color:#fff; margin-bottom:16px; }
.footer-col ul { list-style:none; padding:0; }
.footer-col a { color:#e0e7ff; text-decoration:none; transition:.3s; }
.footer-col a:hover { color:#0d6efd; }
.footer-social a { display:inline-flex; align-items:center; justify-content:center; width:36px; height:36px; background:#0d6efd; border-radius:50%; margin-right:8px; color:#fff; transition:.3s; }
.footer-social a:hover { background:#fff; color:#0b5ed7; }
.footer-bottom { border-top:1px solid rgba(255,255,255,.3); margin-top:40px; padding-top:16px; text-align:center; font-size:13px; color:#e0e7ff; }