/* Material Design Style */
html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: 'Roboto', sans-serif;
  background: #f5f5f5;
  color: #333;
}

/* Header */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: #2196f3;
  color: #fff;
  padding: 15px 0;
  text-align: center;
  box-shadow: 0 2px 6px rgba(0,0,0,0.2);
  z-index: 1000;
}

header h1 {
  margin: 0;
  font-size: 1.8em;
  font-weight: 500;
}

/* Floating vertical menu */
.floating-menu {
  display: flex;
  flex-direction: column;
  position: fixed;
  bottom: 15px;
  right: 15px;
  z-index: 1000;
}

.floating-menu a {
  background: #2196f3;
  color: #fff;
  padding: 12px;
  margin: 5px 0;
  border-radius: 50%;
  text-align: center;
  font-size: 1.2em;
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
  transition: transform 0.3s, background 0.3s;
}

.floating-menu a:hover {
  background: #ff9800;
  transform: scale(1.1);
}

/* Section Card Layout */
section {
  scroll-margin-top: 90px;
}

.card {
  background: #fff;
  margin: 40px auto 20px auto; /* lebih rapat */
  padding: 15px;
  border-radius: 8px;
  box-shadow: 0 2px 8px rgba(0,0,0,0.1);
  text-align: center;
  max-width: 800px;
}

.card h2 {
  color: #2196f3;
  margin-bottom: 10px;
}

.card h2 i {
  margin-right: 10px;
}

.card p {
  font-size: 1.05em;
  margin: 8px 0; /* rapat antar paragraf */
}

/* Paket sewa server */
.paket {
  background: #f9f9f9;
  margin: 15px 0;
  padding: 12px;
  border-radius: 6px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.1);
  text-align: left;
  position: relative;
}

.paket h3 {
  color: #2196f3;
  margin-bottom: 5px;
}

.paket h3 i {
  color: #ff9800;
  margin-right: 8px;
}

/* Badge Paket */
.badge {
  position: absolute;
  top: -10px;
  right: -10px;
  color: #fff;
  padding: 5px 10px;
  border-radius: 4px;
  font-size: 0.9em;
  font-weight: bold;
}

.paket.hemat .badge {
  background: #4caf50;
}

.paket.standar .badge {
  background: #2196f3;
}

.paket.premium .badge {
  background: #ff9800;
}

/* Tombol Material */
.btn {
  display: inline-block;
  margin: 8px;
  padding: 10px 18px;
  background: #2196f3;
  color: #fff;
  font-weight: 500;
  border-radius: 4px;
  text-decoration: none;
  position: relative;
  overflow: hidden;
  transition: background 0.3s;
}

.btn.secondary {
  background: #ff9800;
}

.btn:hover {
  background: #1976d2;
}

.btn i {
  margin-right: 6px;
}

/* Tombol khusus WhatsApp Group */
.btn.whatsapp {
  background: #25D366; /* hijau khas WhatsApp */
}

.btn.whatsapp:hover {
  background: #1ebe5d;
}

/* Ripple Effect */
.btn::after {
  content: "";
  position: absolute;
  background: rgba(255,255,255,0.5);
  border-radius: 50%;
  width: 100px;
  height: 100px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0);
  opacity: 0;
  transition: transform 0.5s, opacity 1s;
  pointer-events: none;
}

.btn:active::after {
  transform: translate(-50%, -50%) scale(2);
  opacity: 1;
  transition: 0s;
}

/* Audio Player */
.audio-player {
  margin-top: 15px;
  padding: 10px;
  background: #f9f9f9;
  border-radius: 6px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.1);
  text-align: center;
}

.audio-player h3 {
  margin-bottom: 10px;
  color: #2196f3;
}

/* Footer */
footer {
  background: #1976d2;
  color: #fff;
  text-align: center;
  padding: 12px;
  margin-top: 20px;
}