* {
  margin: 0;
  box-sizing: border-box;
}

body {
  height: 100vh;
}

li {
  list-style: none;
}

a {
  color: #000;
  text-decoration: none;
}

canvas {
  position: absolute;
  background: #f0f0f0;
  cursor: url('./img/pencil-black.svg'), auto;
}

canvas.eraser {
  cursor: url('./img/eraser-fill.svg'), auto;
}

.tools {
  height: 72px;
  width: 312px;
  border-radius: 36px;
  position: absolute;
  bottom: 10%;
  left: 50%;
  padding: 0 12px;
  background-color: #fff;
  transform: translateX(-50%);
  display: flex;
  box-shadow: 0px 12px 20px -8px rgb(190 190 190 / 20%);
}

.tool-item {
  width: 64px;
  height: 100%;
  flex: 1;
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 36px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.tool-item .color {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--selected-color);
}

.tool-item.active {
  color: #550af7;
  font-size: 42px;
  transform: translateY(-8px);
}

/* panel */
.panel {
  height: 64px;
  padding: 8px 12px;
  border: 1px solid #eee;
  position: absolute;
  bottom: 10%;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  background-color: #fff;
  border-radius: 32px;
  display: none;
  opacity: 0;
}

.color-panel.show {
  display: flex;
  animation: show 0.25s linear forwards;
}

.color-panel.hide {
  display: flex;
  animation: hide 0.25s linear forwards;
}

.color-panel li {
  width:36px;
  height: 36px;
  border-radius: 50%;
  background-color: var(--color);
  cursor: pointer;
}

.color-panel li:not(:last-child) {
  margin-right: 8px;
}

@keyframes show {
  from {
    display: flex;
    opacity: 0;
  }

  50% {
    bottom: 10%;
    opacity: 0.5;
  }
  to {
    bottom: 20%;
    opacity: 1;
  }
}

@keyframes hide {
  from {
    opacity: 1;
    bottom: 20%;
  }

  50% {
    bottom: 10%;
    opacity: 0.5;
  }
  to {
    bottom: 10%;
    opacity: 0;
  }
}