* {
  box-sizing: border-box;
  font-family: Arial, sans-serif;
}

body {
  background: #f4f6f8;
  margin: 0;
  padding: 0;
}

.container {
  max-width: 900px;
  margin: auto;
  background: #fff;
  padding: 20px;
  text-align: center;
  box-shadow: 0 0 15px rgba(0,0,0,0.1);
}

h1 {
  color: #1e73be;
}

.upload-box {
  margin: 20px 0;
}

.upload-box input {
  padding: 10px;
}

.upload-box button {
  padding: 10px 20px;
  background: #1e73be;
  color: #fff;
  border: none;
  cursor: pointer;
  border-radius: 5px;
}

.upload-box button:hover {
  background: #155a96;
}

.output {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 15px;
  margin-top: 20px;
}

.output img {
  width: 100%;
  border: 1px solid #ddd;
}

.ad-box {
  margin: 25px 0;
  padding: 15px;
  border: 2px dashed #ccc;
  color: #777;
  font-size: 14px;
}

/* Mobile Friendly */
@media(max-width:600px){
  h1 {
    font-size: 22px;
  }
}