/* =========================
   RESET DASAR
========================= */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

/* =========================
   BODY UTAMA
========================= */
body {
  font-family: Arial, sans-serif;
  background: linear-gradient(135deg, #020617, #0f172a);
  color: #ffffff;
  line-height: 1.6;
}

/* =========================
   CONTAINER
========================= */
.container {
  width: 90%;
  max-width: 1200px;
  margin: auto;
}

/* =========================
   HEADER / NAVBAR
========================= */
.header {
  background: #020617;
  padding: 15px 0;
  border-bottom: 1px solid #1e293b;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav a {
  color: #fff;
  text-decoration: none;
  margin-left: 20px;
  transition: 0.3s;
  font-weight: bold;
}

.nav a:hover {
  color: #38bdf8;
}

/* =========================
   HERO / BANNER
========================= */
.hero {
  padding: 60px 0;
  text-align: center;
}

.hero h1 {
  font-size: 40px;
  margin-bottom: 15px;
}

.hero p {
  color: #cbd5f5;
}

/* =========================
   BUTTON
========================= */
.btn {
  display: inline-block;
  background: linear-gradient(135deg, #f97316, #ea580c);
  color: #fff;
  padding: 12px 25px;
  border-radius: 8px;
  text-decoration: none;
  margin-top: 15px;
  transition: 0.3s;
  font-weight: bold;
}

.btn:hover {
  opacity: 0.85;
  transform: scale(1.05);
}

/* =========================
   GRID / CARD
========================= */
.row {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 30px;
}

.card {
  flex: 1;
  min-width: 250px;
  background: #020617;
  padding: 20px;
  border-radius: 12px;
  border: 1px solid #1e293b;
  transition: 0.3s;
}

.card:hover {
  transform: translateY(-5px);
  border-color: #38bdf8;
}

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

.card p {
  color: #cbd5f5;
}

/* =========================
   GAMBAR
========================= */
img {
  max-width: 100%;
  border-radius: 10px;
  display: block;
}

/* =========================
   FOOTER
========================= */
.footer {
  text-align: center;
  padding: 20px;
  margin-top: 40px;
  border-top: 1px solid #1e293b;
  color: #94a3b8;
}

/* =========================
   RESPONSIVE
========================= */
@media (max-width: 768px) {
  .nav {
    flex-direction: column;
  }

  .nav a {
    margin: 10px 0;
  }

  .hero h1 {
    font-size: 28px;
  }

  .row {
    flex-direction: column;
  }
}