html, body {
  height: 100%;
  margin: 0;
  background: linear-gradient(160deg, #ffffff 0%, #fff9f0 55%, #f3dfb0 100%);
  font-family: -apple-system, "PingFang TC", "Microsoft JhengHei", sans-serif;
}

.countdown-wrapper {
  left: 50%;
  position: absolute;
  top: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
}

.stopwatch {
  display: flex;
  align-items: center;
  justify-content: center;
}

.flip-unit.flip-clock-wrapper ul {
  height: 144px;
  margin: 0 10px;
  width: 96px;
  box-shadow: 0 2px 5px rgba(0, 0, 0, 0.7);
}

.flip-unit.flip-clock-wrapper ul li {
  line-height: 144px;
}

.flip-unit.flip-clock-wrapper ul li a div div.inn {
  background-color: #607D8B;
  color: #F44336;
  font-size: 120px;
  text-shadow: 0 1px 2px #000;
}

.flip-unit.flip-clock-wrapper ul,
.flip-unit.flip-clock-wrapper ul li a div div.inn {
  border-radius: 8px;
}

.flip-unit.flip-clock-wrapper ul li a div.down {
  border-bottom-left-radius: 8px;
  border-bottom-right-radius: 8px;
}

.flip-unit.flip-clock-wrapper ul li a div.up:after {
  top: calc(144px / 2 - 1px);
}

.dot {
  font-size: 100px;
  font-weight: bold;
  color: #b8862f;
  margin: 0 8px 30px;
}

.controls {
  margin-top: 40px;
  display: flex;
  gap: 20px;
  justify-content: center;
}

.controls button {
  font-size: 24px;
  padding: 14px 36px;
  border: none;
  border-radius: 8px;
  cursor: pointer;
  background: #d4a574;
  color: #fff;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}

.controls button:hover {
  background: #c9925a;
}

.result {
  margin-top: 30px;
  font-size: 22px;
  color: #6b4a1f;
  min-height: 30px;
}