body {
  margin: 0;
  padding: 20px;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  background-color: var(--main-background-color-dark-theme);
  font-family: Arial, sans-serif;
}

#videoPlayer {
  width: 90vw;
  max-width: 640px;
}

.button, .custom-file-upload, #helpButton {
  background-color: var(--videoplayer-button-bg-color);
  color: var(--main-color-palette-whitesmoke);
  padding: 10px;
  border: 1px solid var(--videoplayer-border-color);
  border-radius: 5px;
  margin: 5px;
  cursor: pointer;
  font-size: 16px;
  transition: background-color 0.3s, transform 0.2s;
}

.button:hover, .custom-file-upload:hover, #helpButton:hover {
  background-color: var(--videoplayer-button-hover-bg-color);
  transform: scale(1.05);
}

.button-controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 10px;
}

#fileInput {
  display: none;
}

#helpPopup {
  display: none;
  position: fixed;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  background-color: var(--videoplayer-button-bg-color);
  color: var(--main-color-palette-whitesmoke);
  padding: 20px;
  border: 1px solid var(--videoplayer-border-color);
  border-radius: 5px;
  z-index: 1000;
}

#helpPopup p {
  margin: 10px 0;
}

footer {
  color: var(--main-color-palette-whitesmoke);
  font-size: 14px;
  text-align: center;
  padding: 20px;
  width: 100%;
}