body {
  font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
  background: linear-gradient(135deg, #141e30, #243b55);
  color: #fff;
  text-align: center;
  padding: 30px;
}

h1 {
  font-size: 2.5rem;
  margin-bottom: 20px;
}

.upload-area {
  border: 2px dashed #4fc3f7;
  border-radius: 20px;
  padding: 40px;
  margin: 20px auto;
  width: 70%;
  max-width: 600px;
  cursor: pointer;
  transition: 0.3s;
  background: rgba(255, 255, 255, 0.05);
}

.upload-area:hover {
  background: rgba(79, 195, 247, 0.1);
  transform: scale(1.02);
}

.preview {
  margin-top: 20px;
}

.preview img {
  max-width: 300px;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

button {
  background: #4fc3f7;
  border: none;
  padding: 12px 24px;
  margin-top: 20px;
  border-radius: 30px;
  color: #fff;
  font-size: 1.1rem;
  cursor: pointer;
  transition: 0.3s;
}

button:hover {
  background: #039be5;
}

.result {
  display: flex;
  justify-content: center;
  gap: 30px;
  margin-top: 40px;
  flex-wrap: wrap;
}

.result img {
  max-width: 350px;
  border-radius: 12px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.5);
}

.loader {
  display: none;
  margin-top: 20px;
  border: 6px solid #f3f3f3;
  border-top: 6px solid #4fc3f7;
  border-radius: 50%;
  width: 40px;
  height: 40px;
  animation: spin 1s linear infinite;
  margin-left: auto;
  margin-right: auto;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}