* {
  box-sizing: border-box;
}

body {
  background: #4f2597;
  display: flex;
  min-height: 100dvh;
  align-items: center;
  justify-content: center;
}

button {
  cursor: pointer;
}

.app {
  display: flex;
  align-items: center;
  gap: 8px;
}

.main {
  display: flex;
  flex-direction: column;
  gap: 14px;
  align-items: center;
}

.viewport {
  width: 600px;
  height: 600px;
  max-width: 100dvw;
  max-height: 100dvw;
  position: relative;
  background: white;
  border: solid 2px black;
  border-radius: 8px;
  box-shadow: 0 6px #320e6d;
}

.viewport canvas {
  position: absolute;
  width: 100%;
  height: 100%;
  border-radius: 6px;
  /* We render a custom cursor inside the preview canvas (depending on which
   * tool you are using). */
  cursor: none;
  /* Disable touch events so that mobile interactions can be handled through
   * regular pointer events, just like desktop. */
  touch-action: none;
}

.swatch {
  width: 32px;
  height: 32px;
  border: solid 2px black;
  border-radius: 4px;
}

.swatch.active {
  width: 100%;
  height: 48px;
  grid-column: span 3;
}

.panel {
  padding: 8px;
  background: rgba(0, 0, 0, 0.3);
  border-radius: 8px;
  align-content: start;
  gap: 8px;
}

.panel-group {
  display: flex;
  align-items: center;
  justify-content: space-around;
  gap: 8px;
  border: solid 2px rgba(255, 255, 255, 0.2);
  padding: 4px 15px;
  border-radius: 8px;
}

.color-palette {
  display: grid;
  grid-template-columns: repeat(3, max-content);
  gap: 4px;
  width: max-content;
}

.tool-palette {
  display: grid;
  grid-template-columns: repeat(2, max-content);
  gap: 4px;
  width: max-content;
}

.pen-settings {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
}

.tool {
  width: 48px;
  height: 48px;
  padding: 8px;
  background: transparent;
  border: solid 2px white;
  border-radius: 4px;
  color: white;
  box-shadow: inset 0 0 0 3px #381969;
  opacity: 0.5;
}

.tool[aria-pressed="true"] {
  opacity: 1;
  background: rgba(255, 255, 255, 0.3);
}

.tool:disabled {
  opacity: 0.25;
}

.tool:hover {
  background: rgba(255, 255, 255, 0.2);
}

.pen-size {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: solid 2px white;
  display: block;
  background: transparent;
  padding: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0.2;
}

.pen-size:hover {
  opacity: 0.3;
}

.pen-size[aria-pressed="true"] {
  opacity: 1;
}

.pen-size-inner {
  background-color: white;
  border-radius: 50%;
}

.slider {
  position: relative;
  width: 100%;
  height: 5px;
  background-color: rgba(0, 0, 0, 0.4);
  border-radius: 8px;
  cursor: pointer;
  margin: 0 8px;
}

.slider-handle {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: #614888;
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  border: 0;
}

.slider[data-active] .slider-handle,
.slider:hover .slider-handle {
  background-color: #9479bd;
}

.opacity-preview {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  border: solid 2px white;
  padding: 0;
  display: block;
  flex-shrink: 0;
}

.opacity-preview-full {
  background-color: white;
}

.opacity-preview-none {
  background-color: rgba(255, 255, 255, 0.25);
}

#preview {
  /* Make sure all pointer events fall through the preview canvas and onto the
   * content canvas which does all the important listening.
   */
  pointer-events: none;
}