/* pages/bookshelf/bookshelf.wxss */
.container {
  min-height: 100vh;
  background: linear-gradient(180deg, #f8f9ff 0%, #f5f5f5 100%);
  padding: 30rpx 24rpx;
}

.bookshelf-list {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24rpx;
}

.bookshelf-item {
  background: #fff;
  border-radius: 16rpx;
  overflow: hidden;
  box-shadow: 0 4rpx 20rpx rgba(102, 126, 234, 0.08);
  transition: all 0.3s ease;
  position: relative;
}

.bookshelf-item::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
  pointer-events: none;
}

.bookshelf-item:active {
  transform: scale(0.98);
  box-shadow: 0 2rpx 12rpx rgba(102, 126, 234, 0.12);
}

.bookshelf-item:active::before {
  opacity: 1;
}

.cover-wrapper {
  width: 100%;
  height: 300rpx;
  position: relative;
  overflow: hidden;
}

.cover {
  width: 100%;
  height: 100%;
  transition: transform 0.3s ease;
}

.bookshelf-item:active .cover {
  transform: scale(1.05);
}

.cover-placeholder {
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 12rpx;
  box-sizing: border-box;
  position: relative;
}

.cover-placeholder::after {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: linear-gradient(45deg, transparent 30%, rgba(255, 255, 255, 0.1) 50%, transparent 70%);
  animation: shine 3s infinite;
}

@keyframes shine {
  0% {
    transform: translateX(-100%) translateY(-100%) rotate(45deg);
  }
  100% {
    transform: translateX(100%) translateY(100%) rotate(45deg);
  }
}

.cover-text {
  color: #fff;
  font-size: 20rpx;
  font-weight: 500;
  text-align: center;
  overflow: hidden;
  text-overflow: ellipsis;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  line-height: 1.4;
  position: relative;
  z-index: 1;
}

.book-info {
  padding: 24rpx 16rpx 20rpx;
}

.title {
  font-size: 28rpx;
  font-weight: 600;
  color: #1a1a1a;
  margin-bottom: 12rpx;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  line-height: 1.3;
}

.author {
  font-size: 22rpx;
  color: #8a8a8a;
  margin-bottom: 12rpx;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.meta {
  display: flex;
  gap: 8rpx;
  flex-wrap: wrap;
  align-items: center;
}

.meta text {
  font-size: 20rpx;
  color: #667eea;
  padding: 4rpx 12rpx;
  background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
  border-radius: 12rpx;
  font-weight: 500;
}

.empty {
  text-align: center;
  padding: 240rpx 40rpx;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.empty::before {
  content: '📚';
  font-size: 120rpx;
  margin-bottom: 30rpx;
  opacity: 0.3;
}

.empty text {
  font-size: 28rpx;
  color: #999;
  line-height: 1.6;
}

.loading {
  text-align: center;
  padding: 60rpx 40rpx;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.loading text {
  font-size: 26rpx;
  color: #999;
  margin-top: 20rpx;
}

.loading::before {
  content: '';
  width: 40rpx;
  height: 40rpx;
  border: 4rpx solid #f0f0f0;
  border-top-color: #667eea;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}