body {
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
}

.container {
  width: 100%;
  position: relative;
}

.card {
  padding: 2.5rem;
}

.center {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}

.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(20px);
  transition: var(--transition);
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
}

.visible {
  opacity: 1;
  visibility: visible;
  pointer-events: all;
  transform: translateY(0);
}

/* 引导页面样式 */
#guide {
  padding: 3rem;
}

#guide h1 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
  font-weight: 700;
}

#guide p {
  font-size: 1.2rem;
  margin-bottom: 1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

.highlight {
  background: rgba(255, 215, 0, 0.15);
  padding: 0.25rem 0.75rem;
  border-radius: 8px;
  color: var(--accent);
  font-weight: 600;
}

.control-link {
  margin-top: 2rem;
  padding: 1rem 2rem;
  background: var(--primary);
  color: white;
  border-radius: 12px;
  font-weight: 500;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.control-link:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
}

/* Splash 页面样式 */
#splash {
  padding: 4rem;
}

.splash-logo {
  width: 180px;
  height: 180px;
  margin-bottom: 2rem;
  background: linear-gradient(
    135deg,
    var(--primary) 0%,
    var(--primary-dark) 100%
  );
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 40px rgba(37, 99, 235, 0.4);
  animation: pulse 2s infinite;
}

.splash-logo img {
  max-width: 70%;
}

.splash-text {
  font-size: 3.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  background: linear-gradient(90deg, var(--accent) 0%, #ffed4e 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

/* 标品展示样式 */
#itemView {
  width: 100%;
  padding: 3rem;
}

.itemMedia {
  margin-bottom: 2rem;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
  transition: var(--transition);
  max-width: 800px;
}

.itemMedia:hover {
  transform: scale(1.02);
}

.item img,
.item video {
  width: 100%;
  display: block;
  border-radius: var(--radius);
}

.name {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.remark {
  font-size: 1.2rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 600px;
  line-height: 1.6;
}

.price-container {
  position: relative;
  margin: 2rem 0;
}

.price {
  font-size: 4rem;
  font-weight: 700;
  color: var(--accent);
  text-shadow: 0 0 20px rgba(255, 215, 0, 0.5);
  transition: var(--transition);
  position: relative;
  display: inline-block;
}

.price-update {
  animation: priceUpdate 0.5s ease-out;
}

.currency {
  font-size: 2rem;
  margin-right: 0.5rem;
  vertical-align: super;
}

/* 成交界面样式 */
#dealView {
  padding: 4rem 3rem;
}

.deal-icon {
  font-size: 5rem;
  margin-bottom: 2rem;
  animation: celebrate 1s ease-out;
}

.deal {
  font-size: 3.5rem;
  font-weight: 700;
  color: var(--accent-green);
  margin-bottom: 2rem;
  text-shadow: 0 0 20px rgba(0, 200, 83, 0.4);
}

.finalPrice {
  font-size: 3rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--accent);
}

.winner {
  font-size: 2rem;
  font-weight: 500;
  color: var(--text-primary);
  padding: 1rem 2rem;
  background: rgba(0, 200, 83, 0.1);
  border-radius: 12px;
  border: 1px solid rgba(0, 200, 83, 0.3);
}

/* 总金额样式 */
.footer {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: var(--dark-3);
  padding: 1rem 1.5rem;
  border-radius: 12px;
  font-size: 1.2rem;
  font-weight: 500;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.footer span {
  color: var(--accent);
  font-weight: 700;
  font-size: 1.4rem;
}

/* 动画 */
@keyframes pulse {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.7);
  }
  70% {
    transform: scale(1.02);
    box-shadow: 0 0 0 15px rgba(37, 99, 235, 0);
  }
  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(37, 99, 235, 0);
  }
}

@keyframes priceUpdate {
  0% {
    transform: scale(1);
  }
  50% {
    transform: scale(1.2);
    text-shadow: 0 0 30px rgba(255, 215, 0, 0.8);
  }
  100% {
    transform: scale(1);
  }
}

@keyframes celebrate {
  0% {
    transform: scale(0);
    opacity: 0;
  }
  70% {
    transform: scale(1.2);
    opacity: 1;
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

/* 响应式设计 */
@media (max-width: 768px) {
  .card {
    padding: 1.5rem;
  }

  .splash-text {
    font-size: 2.5rem;
  }

  .name {
    font-size: 2rem;
  }

  .price {
    font-size: 3rem;
  }

  .deal {
    font-size: 2.5rem;
  }

  .finalPrice {
    font-size: 2.5rem;
  }

  .winner {
    font-size: 1.5rem;
  }
}