.countdown-container {
  position: relative;
  z-index: 10;
  min-height: 100vh;
  padding: 20px;
  overflow: hidden;
  font-weight: bold;
  color: #fff;
  line-height: 1;
  text-shadow: 0 0px 20px rgba(0, 0, 0);
  font-family: "Arial", "Yu Gothic", "YuGothic", "Hiragino Kaku Gothic Pro", "MS PGothic", sans-serif;
}

.countdown-bg-video {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100vh;
  object-fit: cover;
  z-index: -1;
}

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

.countdown-item {
  padding: 3% 3% 2%;
  border-radius: 10px;
}

.countdown-number {
  font-size: 3rem;
}

.countdown-separator {
  font-size: 2.5rem;
  padding: 3%;
}

.countdown-complete {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  display: none;
  z-index: 1000;
}

.countdown-complete-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 25%;
}

@media (max-width: 768px) {
  .countdown-number {
    font-size: 2rem;
  }
  .countdown-separator {
    font-size: 1.5rem;
  }
  .countdown-complete-content {
    width: 80%;
  }
}