body {
  font-family: "Segoe UI", Arial, sans-serif;
  margin: 0;
  background: #f5f7fa;
}

/* HEADER */
header {
  background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
  color: white;
  padding: 25px 15px;
  text-align: center;
}

header h1 {
  margin: 0;
  font-size: 26px;
}

.download-count {
  color: #e0e0e0;
  margin: 10px 0;
  font-size: 16px;
}

/* CONTAINER */
.container {
  max-width: 1200px;
  margin: auto;
  padding: 20px;
}

/* DESCRIPTION */
.container p {
  line-height: 1.6;
}

/* IMAGE GRID */
.image-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 25px;
  margin-top: 30px;
}

/* CARD */
.card {
  background: white;
  border-radius: 15px;
  padding: 20px;
  box-shadow: 0 6px 15px rgba(0, 0, 0, 0.08);
  text-align: center;
}

.card img {
  width: 100%;
  height: auto;
  border-radius: 12px;
  margin-bottom: 15px;
}

/* BUTTON */
.download-btn {
  display: block;
  padding: 12px;
  background: linear-gradient(135deg, #2c5364, #203a43);
  color: white;
  border-radius: 8px;
  text-decoration: none;
  font-weight: bold;
  transition: 0.3s;
}

.download-btn:hover {
  background: linear-gradient(135deg, #203a43, #2c5364);
}

/* ADS */
.ad-section {
  max-width: 100%;
  margin: 20px auto;
  text-align: center;
  background: transparent;
  padding: 10px 0;
  border-radius: 8px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.05);
}

.ad-placeholder {
  background: #e9ecef;
  padding: 25px;
  border-radius: 8px;
  font-size: 14px;
  color: #666;
}

/* FOOTER */
footer {
  text-align: center;
  padding: 25px 15px;
  background: #111;
  color: #ccc;
  margin-top: 40px;
}

/* MOBILE OPTIMIZATION */
@media (max-width: 768px) {
  header {
    padding: 20px 15px;
  }

  header h1 {
    font-size: 20px;
  }

  .download-count {
    font-size: 14px;
  }

  .container {
    padding: 15px;
  }

  .image-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .card {
    padding: 15px;
  }

  .download-btn {
    font-size: 14px;
    padding: 10px;
  }

  .ad-section {
    padding: 15px;
  }

  .ad-container {
    width: 100%;
    max-width: 100%;
    margin: auto;
    text-align: center;
  }

  .ad-container iframe {
    width: 100% !important;
    max-width: 100% !important;
    height: auto !important;
  }
}