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

body {
  height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(circle at center, #1c1730 0%, #0b0812 100%);
  font-family: 'Segoe UI', Arial, sans-serif;
  color: #e8e3f5;
}

.slider-wrap {
  width: 100%;
  max-width: 900px;
  overflow: hidden;
  margin: 0 auto 3rem;
  -webkit-mask-image: linear-gradient(90deg, transparent 0%, #000 8%, #000 92%, transparent 100%);
  mask-image: linear-gradient(90deg, transparent 0%, #000 8%, #000 92%, transparent 100%);
}

.slider-track {
  display: flex;
  width: max-content;
  gap: 1.2rem;
  animation: slide-left 20s linear infinite;
}

.slider-wrap:hover .slider-track {
  animation-play-state: paused;
}

@keyframes slide-left {
  from { transform: translateX(0); }
  to { transform: translateX(-50%); }
}

.slide {
  position: relative;
  width: 140px;
  height: 140px;
  flex: 0 0 auto;
  border-radius: 10px;
  overflow: hidden;
  box-shadow: 0 6px 16px rgba(0,0,0,0.5);
}

.slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  filter: grayscale(100%) brightness(0.8);
}

.x-overlay {
  position: absolute;
  inset: 0;
}

.x-overlay::before,
.x-overlay::after {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 140%;
  height: 6px;
  background: #ff2d2d;
  box-shadow: 0 0 6px rgba(255,45,45,0.8);
}

.x-overlay::before {
  transform: translate(-50%, -50%) rotate(45deg);
}

.x-overlay::after {
  transform: translate(-50%, -50%) rotate(-45deg);
}

.countdown-wrap {
  text-align: center;
}

.countdown-wrap h1 {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 2.5rem;
  color: #a78bfa;
  letter-spacing: 1px;
}

.flip-clock {
  display: flex;
  gap: 2rem;
  justify-content: center;
  perspective: 1000px;
}

.flip-unit {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.8rem;
}

.flip-card {
  position: relative;
  width: 110px;
  height: 150px;
}

.digit {
  position: relative;
  width: 100%;
  height: 100%;
}

.front, .back {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 5rem;
  font-weight: 700;
  background: linear-gradient(180deg, #2d2450 0%, #191330 100%);
  border-radius: 12px;
  box-shadow: 0 8px 20px rgba(0,0,0,0.5), inset 0 1px 0 rgba(167,139,250,0.1);
  color: #a78bfa;
}

.front {
  z-index: 2;
}

.back {
  z-index: 1;
}

/* center divider line to sell the "card" look */
.digit::after {
  content: "";
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 1px;
  background: rgba(0,0,0,0.4);
  z-index: 3;
  transform: translateY(-0.5px);
}

.flipping .front {
  animation: flip-out 0.6s ease-in forwards;
  transform-origin: bottom;
  backface-visibility: hidden;
}

@keyframes flip-out {
  0% {
    transform: rotateX(0deg);
  }
  100% {
    transform: rotateX(-90deg);
    opacity: 0.4;
  }
}

.flipping .back {
  animation: flip-in 0.6s ease-out forwards;
  transform-origin: top;
  backface-visibility: hidden;
}

@keyframes flip-in {
  0% {
    transform: rotateX(90deg);
    opacity: 0.4;
  }
  100% {
    transform: rotateX(0deg);
    opacity: 1;
  }
}

.label {
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 2px;
  color: #8a7bab;
}

.done-msg {
  margin-top: 2rem;
  font-size: 1.5rem;
  color: #a78bfa;
}

@media (max-width: 600px) {
  .flip-card {
    width: 70px;
    height: 100px;
  }
  .front, .back {
    font-size: 3rem;
  }
  .flip-clock {
    gap: 1rem;
  }
}

#fireworks {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
}