/* 详情页样式 - 透明背景，继承 body 背景色 */
html, body {
  margin: 0;
  padding: 0;
  overflow: auto;
}
html::-webkit-scrollbar, body::-webkit-scrollbar {
  width: 0px;
  height: 0px;
  display: none;
}
html {
  scrollbar-width: none;
  -ms-overflow-style: none;
}

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

body {
  background: transparent;  /* 继承父级背景 */
  color: #1a1a1a;
  line-height: 1.5;
  font-family: system-ui, -apple-system, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  padding: 0;
  min-height: 100vh;
}

/* 头部透明 */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 32px;
  background-color: transparent;
}
.logo {
  font-size: 1.5rem;
  font-weight: 600;
  letter-spacing: 1px;
  color: #111;
}
nav {
  display: flex;
  gap: 32px;
}
nav a {
  text-decoration: none;
  color: #555;
  font-weight: 500;
  font-size: 1rem;
  transition: color 0.2s;
  padding: 4px 0;
}
nav a:hover { color: #000; }
nav a.active { color: #000; border-bottom: 2px solid #000; }

/* 详情页主体透明背景 */
.case-detail {
  max-width: 1400px;
  margin: 0 auto;
  padding: 48px 24px;
  background-color: transparent;
}
.case-detail h1 {
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: 24px;
  color: #111;
  text-align: center;
}

/* 展示图动态区域 - 紧凑间距 */
.showcase-dynamic-area {
  width: 100%;
  padding: 0;
  margin-bottom: 16px;
}
.dynamic-row {
  width: 100%;
  display: flex;
  gap: 16px;
  margin-bottom: 8px;
  flex-wrap: wrap;
}
.dynamic-row.auto-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
.dynamic-row.single-col { flex-direction: column; }
.dynamic-row.single-col .dynamic-item { width: 100%; }
.dynamic-row.two-col .dynamic-item { width: calc(50% - 8px); }
.dynamic-row.three-col .dynamic-item { width: calc(33.333% - 11px); }

/* 动态展示项 */
.dynamic-item {
  background: transparent;
  position: relative;
  overflow: hidden;
  break-inside: avoid;
}
.dynamic-media-container {
  width: 100%;
  position: relative;
  overflow: hidden;
}
.dynamic-media-container img,
.dynamic-media-container video {
  width: 100%;
  height: 100%;
  display: block;
  object-fit: cover;
  background: transparent;
}
/* 比例裁切 */
.aspect-ratio-1-1 .dynamic-media-container { aspect-ratio: 1 / 1; }
.aspect-ratio-4-3 .dynamic-media-container { aspect-ratio: 4 / 3; }
.aspect-ratio-16-9 .dynamic-media-container { aspect-ratio: 16 / 9; }
.aspect-ratio-3-4 .dynamic-media-container { aspect-ratio: 3 / 4; }

/* 纯文本行 - 紧凑 */
.dynamic-row.text-row {
  background: none;
  padding: 4px 0;
  margin-bottom: 4px;
}
.text-content {
  font-size: 16px;
  color: #555;
  line-height: 1.4;
  white-space: pre-wrap;
}
.text-content .text-center {
  display: block;
  text-align: center;
}
.text-content .text-line-break {
  margin-top: 1em;
}

/* 文件行样式 - 透明背景 */
.dynamic-row.file-row {
  flex-wrap: wrap;
  gap: 12px;
}
.dynamic-file-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 8px 12px;
  background: rgba(0,0,0,0.03);
  border-radius: 4px;
}
.dynamic-row.file-row.single-col .dynamic-file-item { max-width: 100%; }
.dynamic-row.file-row.two-col .dynamic-file-item { max-width: calc(50% - 6px); }
.dynamic-row.file-row.three-col .dynamic-file-item { max-width: calc(33.333% - 8px); }
.dynamic-file-name {
  flex: 1;
  margin-right: 10px;
  padding: 4px 8px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: #666;
}
.dynamic-file-name .file-size { color: #999; font-size: 12px; }
.dynamic-download-button {
  background: #F4987C;
  color: white;
  text-decoration: none;
  padding: 4px 12px;
  border-radius: 3px;
  font-size: 14px;
  white-space: nowrap;
}
.dynamic-download-button:hover { background: #e07a5f; }

/* 文件下载区域 - 透明背景 */
.text-files-container {
  width: 100%;
  padding: 15px 5px;
  margin-top: 20px;
  background-color: transparent;
}
.text-files-container h3 {
  font-size: 1.25rem;
  font-weight: 600;
  padding: 10px 0;
}
.text-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 8px;
}
.text-file-item-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  width: 100%;
  padding: 8px 12px;
  background: rgba(0,0,0,0.03);
  border-radius: 4px;
}
.text-file-name {
  flex: 1;
  margin-right: 10px;
  padding: 4px 8px;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: #666;
}
.text-file-name .file-size { color: #999; font-size: 12px; }
.download-button {
  background: #F4987C;
  color: white;
  text-decoration: none;
  padding: 4px 12px;
  border-radius: 3px;
  font-size: 14px;
  white-space: nowrap;
}
.download-button:hover { background: #e07a5f; }

/* 媒体网格区域（剩余图片/视频）透明背景 */
.media-grid-container {
  width: 100%;
  padding: 15px 5px;
  margin-top: 30px;
  background-color: transparent;
}
.media-grid-container h3 {
  font-size: 1.25rem;
  font-weight: 600;
  padding: 10px 0;
}
.media-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
.media-item {
  background: transparent;
  position: relative;
  overflow: hidden;
}
.media-item img,
.media-item video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  background: transparent;
}

/* 返回链接 - 居中 */
.back-link {
  display: block;
  text-align: center;
  margin: 40px auto 0;
  color: #555;
  text-decoration: none;
  padding-bottom: 2px;
}
.back-link:hover { color: #000; }

/* 底部透明 */
footer {
  text-align: center;
  padding: 32px 24px;
  background-color: transparent;
  color: #888;
  font-size: 0.85rem;
}

/* 响应式 */
@media (max-width: 1024px) {
  .case-detail { padding: 32px 20px; }
  .media-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 768px) {
  .case-detail { padding: 24px 16px; }
  .case-detail h1 { font-size: 1.75rem; }
  .dynamic-row.auto-grid { grid-template-columns: 1fr; }
  .dynamic-row.two-col .dynamic-item,
  .dynamic-row.three-col .dynamic-item,
  .dynamic-row.single-col .dynamic-item,
  .dynamic-row.file-row.two-col .dynamic-file-item,
  .dynamic-row.file-row.three-col .dynamic-file-item,
  .dynamic-row.file-row.single-col .dynamic-file-item {
    width: 100%;
    max-width: 100%;
  }
  .media-grid { grid-template-columns: repeat(2, 1fr); gap: 12px; }
  header { flex-direction: column; gap: 12px; padding: 16px; }
  nav { gap: 24px; }
}
@media (max-width: 480px) {
  .media-grid { grid-template-columns: 1fr; }
}
@media (min-width: 1900px) {
  .media-grid { grid-template-columns: repeat(5, 1fr); }
  .dynamic-row.auto-grid { grid-template-columns: repeat(2, 1fr); }
}
/* 手机端 Creative elements 区域三列布局 & Lightbox 样式（自动维护） */
@media (max-width: 768px) {
  .media-grid {
    grid-template-columns: repeat(3, 1fr) !important;
    gap: 12px !important;
  }
  /* 确保图片容器在小屏下不会过挤 */
  .media-item img, .media-item video {
    width: 100%;
    height: auto;
    object-fit: cover;
    aspect-ratio: 1 / 1;
  }
}
/* 全局 Lightbox 遮罩层 */
.lightbox-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.9);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.3s ease;
}
.lightbox-overlay.active {
  opacity: 1;
}
.lightbox-image {
  max-width: 90vw;
  max-height: 90vh;
  object-fit: contain;
  box-shadow: 0 0 20px rgba(0,0,0,0.5);
}