body {
  margin: 0;
  font-family: 'Poppins', sans-serif;
  background: radial-gradient(circle at top, #1a0033, #000);
  color: #fff;
  text-align: center;
  overflow-x: hidden;
}

/* ==== BANNER ==== */
.banner {
  background: linear-gradient(90deg, rgba(20,0,40,0.9), rgba(0,0,0,0.9));
  padding: 25px 15px; /* lebih ramping */
  position: relative;
  overflow: hidden;
  border-bottom: 2px solid rgba(255,215,0,0.4);
}

.banner::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255,215,0,0.15), transparent 70%);
  animation: rotate 25s linear infinite;
}

@keyframes rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.logo {
  font-size: 18px;
  color: gold;
  text-shadow: 0 0 8px #ff0, 0 0 15px #f80;
}

.logo img {
  max-width: 110px; /* lebih kecil */
  height: auto;
}

.banner .judul {
  font-size: 48px; /* lebih fit */
  font-family: 'Orbitron', sans-serif;
  color: gold;
  margin: 10px 0;
  text-shadow: 0 0 8px #ff0, 0 0 20px #f80, 0 0 40px #f00;
  animation: glow 2s ease-in-out infinite alternate;
}

@keyframes glow {
  from { text-shadow: 0 0 8px #ff0, 0 0 16px #f80; }
  to { text-shadow: 0 0 16px #ff0, 0 0 30px #f80, 0 0 60px #f00; }
}

.banner .hadiah {
  font-size: 20px;
  color: white;
  margin-top: 8px;
}

.banner .hadiah span {
  color: #ff4444;
  font-size: 32px;
  font-weight: bold;
  text-shadow: 0 0 10px #f00, 0 0 20px #ff0;
}

.sub {
  font-size: 16px;
  color: #ffcc66;
  margin-top: 5px;
}

/* ==== PEMENANG ==== */
.pemenang {
  padding: 20px 10px;
}

.pemenang h2 {
  font-size: 24px;
  margin-bottom: 15px;
  color: gold;
  text-shadow: 0 0 6px rgba(255,215,0,0.6);
}

.tab {
  margin: 15px 0;
}

.tab button {
  background-color: #eee; /* warna default */
  color: #333;            /* teks default */
  border: none;
  padding: 10px 20px;
  margin-right: 5px;
  cursor: pointer;
  border-radius: 5px;
  transition: 0.3s;
}

.tab button.active {
  background-color: #333; /* tombol aktif jadi hitam */
  color: #fff;            /* teks putih */
  font-weight: bold;
}

.list {
  display: none;
  animation: fadeIn 0.4s ease forwards;
}

.list.active {
  display: block;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* GRID PEMENANG */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: 10px;
  justify-content: center;
  max-width: 1000px;
  margin: auto;
}

.card {
  background: linear-gradient(145deg, #222, #111);
  border: 1px solid gold;
  border-radius: 10px;
  padding: 10px;
  font-weight: bold;
  color: gold;
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  font-size: 14px;
}

.card:hover {
  transform: translateY(-3px) scale(1.03);
  box-shadow: 0 0 12px gold;
}

/* ==== RESPONSIVE ==== */
@media (max-width: 768px) {
  .banner .judul {
    font-size: 32px;
  }
  .banner .hadiah {
    font-size: 16px;
  }
  .banner .hadiah span {
    font-size: 22px;
  }
  .sub {
    font-size: 14px;
  }
  .grid {
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
  }
  .card {
    font-size: 12px;
    padding: 8px;
  }
}