body {
  font-family: "Segoe UI", Tahoma, Geneva, Verdana, sans-serif;
  margin: 0;
  padding: 0;
  display: flex;
  justify-content: center;
  align-items: center;
  height: 100vh;
  background-color: #f4f4f4;
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
  border: 4px dashed transparent;
  cursor: pointer;
}

body.dragover {
  border-color: #3578bb;
  background-color: #e0f0ff;
}

.container {
  text-align: center;
  max-width: 500px;
  width: 100%;
  padding: 20px;
  border-radius: 8px;
  background-color: #fff;
  box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
  margin: 20px;
}

h1 {
  font-size: 2rem;
  margin-bottom: 20px;
  color: #333;
}

.file-input {
  font-size: 1rem;
  padding: 8px 12px;
  border-radius: 5px;
  border: 1px solid #ccc;
  cursor: pointer;
  width: 100%;
  max-width: 400px;
  margin: 10px 0;
}

.file-input:focus {
  outline: none;
  border-color: #4a90e2;
}

.image-preview {
  max-width: 100%;
  max-height: 300px;
  margin: 20px 0;
  border-radius: 8px;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

.download-btn {
  padding: 10px 20px;
  font-size: 1rem;
  color: white;
  background-color: #3578bb;
  border: none;
  border-radius: 5px;
  cursor: pointer;
  transition: background-color 0.3s ease;
  margin-top: 20px;
}

.download-btn:hover {
  background-color: #27598b;
}

#canvas {
  display: none;
}

@media (prefers-color-scheme: dark) {
  body {
    background-color: #181818;
    color: #f4f4f4;
  }

  body.dragover {
    background-color: #1f2a40;
    border-color: #4a90e2;
  }

  .container {
    background-color: #2e2e2e;
    color: #f4f4f4;
    box-shadow: 0 4px 8px rgba(255, 255, 255, 0.1);
  }

  h1 {
    color: #fff;
  }

  .file-input {
    border: 1px solid #444;
    background-color: #333;
    color: #ddd;
  }

  .file-input:focus {
    border-color: #4a90e2;
    background-color: #444;
  }

  .image-preview {
    border: 1px solid #444;
  }

  .download-btn {
    background-color: #357abd;
  }

  .download-btn:hover {
    background-color: #4a90e2;
  }
}

@media (max-width: 600px) {
  .container {
    padding: 15px;
    margin: 10px;
  }

  h1 {
    font-size: 1.5rem;
  }

  .file-input {
    padding: 12px;
    font-size: 1.1rem;
    width: 90%;
  }

  .download-btn {
    padding: 12px 24px;
    font-size: 1.1rem;
  }
}