body {
  overflow-x: hidden !important;
}

#container {
  display: flex;
  flex-direction: row;
  align-items: flex-start;
  justify-content: space-between;
  width: 90vw;
  max-width: calc(100vw - 20px);
  margin: 10px auto;
  gap: 20px;
}

button {
  font: inherit;
}

#controls {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 30%;
  border-radius: 8px;
  padding: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  transition: background-color 0.3s ease;
}

#preview {
  flex: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 70%;
  border-radius: 8px;
  padding: 10px;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
  transition: background-color 0.3s ease;
}

#thumbnails {
  margin-top: 20px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: center;
}

.thumbnail {
  cursor: pointer;
  border: 2px solid transparent;
  transition: border 0.3s;
}

.thumbnail.selected {
  border: 5px solid #007bff;
}

#upload {
  margin-bottom: 20px;
}

canvas {
  border: 1px solid black;
  width: 100%;
  max-width: 100%;
  height: auto;
  display: none;
}

#generate-thumbnails-btn,
#generate-thumbnail-btn,
#download-btn {
  margin-top: 10px;
  padding: 10px 20px;
  background-color: #007bff;
  color: white;
  border: none;
  cursor: pointer;
  font: inherit;
}

#generate-thumbnails-btn:hover,
#generate-thumbnail-btn:hover,
#download-btn:hover {
  background-color: #0056b3;
}

input[type="number"] {
  margin-top: 10px;
  padding: 5px;
  width: 150px;
  max-width: calc(100% - 20px);
  font: inherit;
}

.instructions {
  font-size: 14px;
  color: #555;
  margin-top: 5px;
  text-align: center;
}

@media (max-width: 768px) {
  #container {
    flex-direction: column;
    align-items: center;
  }

  #controls {
    width: 95%;
    max-width: 100%;
  }

  #preview {
    width: 95%;
    max-width: 100%;
  }
}

body.dark-mode #controls,
body.dark-mode #preview {
  background-color: #333;
  box-shadow: 0 4px 12px rgba(255, 255, 255, 0.1);
  transition: background-color 0.3s ease, box-shadow 0.3s ease;
}