* {
  box-sizing: border-box;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, sans-serif;
}

body {
  margin: 0;
  background: #2b2b2b; /* dark gray background */
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
}

.container {
  padding: 20px;
}

.card {
  width: 400px;   /* fix width */
  height: 250px;  /* fix height */
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  border-radius: 24px;
  background: #3a3a3a; /* contoh dark gray */
  box-shadow: 0 16px 32px rgba(0,0,0,0.1);
  text-align: center;
  padding: 30px;
}

.slide {
  display: none;
  height: 180px;          /* uniform slide height */
  overflow-y: auto;       /* scroll jika teks panjang */
  width: 100%;            /* pakai full card width */
  text-align: center;
  color: #e0e0e0;         /* teks soft gray */
}

.slide.active {
  display: block;
}

.cta {
  display: inline-block;
  margin-top: 48px;
  padding: 12px 28px;
  background: #505050; /* dark button */
  color: #e0e0e0;
  text-decoration: none;
  border-radius: 999px;
  font-weight: 500;
}

.nav {
  margin-top: 24px;
  display: flex;
  justify-content: space-between;
}

.nav button {
  background: none;
  border: none;
  font-size: 1.4rem;
  cursor: pointer;
  color: #b0b0b0; /* soft gray for arrows */
}