/* 命名空间隔离：所有样式以 paper-gallery- 为前缀 */
.paper-gallery-container {
  width: 100%;
  box-sizing: border-box;
}

.paper-gallery-row {
  display: flex;
  width: 100%;
  margin: 1;
  padding: 0;
  box-sizing: border-box;
}

.paper-gallery-main {
  width: 100%;
  max-width: 1600px;
  margin: 0 auto;
  box-sizing: border-box;
}

.paper-gallery-link {
  display: block;
  width: 100%;
  height: 100%;
  text-decoration: none;
  color: inherit;
}

/* 控制区样式 */
.paper-gallery-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 30px;
  font-family: inherit;
}

.paper-gallery-sort {
  display: flex;
  gap: 15px;
}

.paper-gallery-btn {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: inherit;
  font-size: 14px;
  line-height: 1.5;
}

.paper-gallery-btn-primary {
  background-color: #165dff;
  color: white;
}

.paper-gallery-btn-default {
  background-color: var(--surface-2, #f5f7fa);
  color: var(--text, #1d2129);
}

.paper-gallery-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.paper-gallery-count {
  color: var(--text-muted, #666);
  font-size: 14px;
  font-family: inherit;
}

/* 加载动画 */
.paper-gallery-loading {
  display: flex;
  justify-content: center;
  align-items: center;
  height: 250px;
}

.paper-gallery-loader {
  width: 40px;
  height: 40px;
  border: 4px solid var(--border, #e0e0e0);
  border-top-color: #165dff;
  border-radius: 50%;
  animation: paper-gallery-spinner 0.8s linear infinite;
}

@keyframes paper-gallery-spinner {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

/* 画廊核心样式（无圆角、无间距） */
.paper-gallery {
  display: flex;
  flex-wrap: wrap;
  width: 100%;
  overflow: hidden;
  display: none; /* 默认隐藏 */
}

/* 图片项（等高不等宽） */
.paper-gallery-item {
  flex: 0 0 auto;
  overflow: hidden;
  cursor: pointer;
  margin: 0 !important;
  padding: 0 !important;
  box-sizing: border-box;
  border: 1px solid var(--border, #000);
  background: #fff; /* plate for transparent-PNG paper figures */
}

.paper-gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
  display: block; /* 消除inline默认空隙 */
}

.paper-gallery-item:hover img {
  transform: scale(1.05);
  z-index: 1;
  position: relative;
}

/* 无图片状态 */
.paper-gallery-noimages {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  height: 250px;
  color: var(--text-muted, #999);
  font-family: inherit;
  font-size: 16px;
}

.paper-gallery-noimages i {
  font-size: 60px;
  margin-bottom: 15px;
}

/* 模态框样式 */
.paper-gallery-modal {
  background-color: rgba(0, 0, 0, 0.9);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
}

.paper-gallery-modal.active {
  opacity: 1;
  visibility: visible;
}

.paper-gallery-modal-close {
  background: transparent;
  border: none;
  color: white;
  cursor: pointer;
  transition: color 0.3s ease;
  position: absolute;
  top: 20px;
  right: 20px;
  font-size: 30px;
}

.paper-gallery-modal-close:hover {
  color: #ccc;
}

.paper-gallery-modal-content {
  max-width: 90vw;
  max-height: 90vh;
}

.paper-gallery-modal-content img {
  max-width: 100%;
  max-height: 100%;
  object-fit: contain;
}

/* 响应式适配 */
@media (max-width: 767px) {
  .paper-gallery-controls {
    flex-direction: column;
    align-items: flex-start;
    gap: 15px;
  }

  .paper-gallery-sort {
    width: 100%;
    justify-content: space-between;
  }

  .paper-gallery-btn {
    flex: 1;
    justify-content: center;
    padding: 8px 10px;
  }
}