.sdvx-option-row {
  display: flex;
  align-items: center;
  margin-bottom: 15px;
}

.sdvx-option-row .option-label {
  flex: 1;
  min-width: 0;
}

.sdvx-option-row .option-preview {
  margin-left: 1em;
  flex-shrink: 0;
}

.sdvx-option-row .option-preview img {
  max-width: 100%;
  height: auto;
  display: block;
}

.sdvx-option-row .option-preview img.wallpaper-preview {
  width: 490px;
  max-width: 100%;
}

.sdvx-option-row .option-preview img.stamp-preview {
  width: 200px;
  max-width: 100%;
}

.sdvx-bgm-controls {
  margin-left: 1em;
  display: flex;
  flex-wrap: wrap;
  gap: 5px;
}

.sdvx-game-settings .fields {
  display: flex;
  flex-wrap: wrap;
  gap: 15px;
}

.sdvx-game-settings .field {
  flex: 1;
  min-width: 200px;
}

.sdvx-game-settings .akaname-save-field {
  margin-top: 10px;
  width: 100%;
}

.sdvx-game-settings .akaname-save-field input[type="submit"] {
  display: inline-block;
  width: auto;
  max-width: 280px;
}

@media screen and (max-width: 768px) {
  .sdvx-option-row {
    flex-direction: column;
    align-items: flex-start;
  }

  .sdvx-option-row .option-label {
    width: 100%;
    margin-bottom: 10px;
  }

  .sdvx-option-row .option-preview {
    margin-left: 0;
    width: 100%;
    text-align: center;
  }

  .sdvx-option-row .option-preview img {
    max-width: 100% !important;
    width: auto !important;
    height: auto !important;
    margin: 5px auto;
  }

  .sdvx-bgm-controls {
    margin-left: 0;
    margin-top: 10px;
    width: 100%;
    justify-content: center;
  }

  .sdvx-bgm-controls button {
    flex: 1;
    min-width: 100px;
    justify-content: center;
    margin: 3px !important;
  }

  .sdvx-game-settings input[type="text"] {
    width: 100%;
    max-width: 280px;
    font-size: 16px;
  }

  .sdvx-game-settings input[type="submit"],
  .sdvx-game-settings input[type="button"] {
    width: 100%;
    max-width: 280px;
    margin-bottom: 8px;
  }

  .sdvx-game-settings .fields {
    flex-direction: column;
  }

  .sdvx-game-settings .field {
    width: 100%;
    min-width: 0;
  }

  .sdvx-game-settings select {
    width: 100%;
    max-width: 280px;
    font-size: 16px;
    padding: 8px;
  }
}

@media screen and (max-width: 480px) {
  .sdvx-option-row {
    margin-bottom: 10px;
  }

  .sdvx-bgm-controls button {
    font-size: 12px;
    padding: 6px 10px;
  }
}