/* ==========================================================
 * Single Project — 项目详情页样式
 * 依赖 tokens.css 中的 CSS 变量 + dynamic-css.php 动态覆盖
 * ========================================================== */

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
 * 页面容器
 * ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.single-project-page {
  width: 100%;
  max-width: 100%;
  margin: 0 auto;
  padding-left: var(--en-page-pad, 30px);
  padding-right: var(--en-page-pad, 30px);
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
 * 1. 封面区域
 * ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.project-hero {
  width: 100%;
  height: var(--en-single-hero-h, 100vh);
  min-height: 300px;
  overflow: hidden;
  background-color: var(--en-color-surface, #f5f5f5);
}

/* 封面在页面有边距时需要突破容器 */
.single-project-page .project-hero {
  margin-left: calc(-1 * var(--en-page-pad, 30px));
  margin-right: calc(-1 * var(--en-page-pad, 30px));
  width: calc(100% + 2 * var(--en-page-pad, 30px));
}

/* auto 高度时封面自适应 */
.project-hero[style*="--en-single-hero-h: auto"] {
  height: auto;
  min-height: unset;
}

.project-hero-media {
  width: 100%;
  height: 100%;
}

.project-hero-media .cover-image,
.project-hero-media img,
.project-hero-media video {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
 * 2. 上下布局 — 文字介绍区域
 * ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.project-intro {
  position: relative;
  display: flex;
  flex-direction: column;
  /* gap will now only apply if there are multiple static items (content). Header is absolute. */
  gap: var(--en-space-xl, 48px);
  padding: var(--en-single-pt, var(--en-page-pad-y, 48px)) 0 var(--en-single-pb, var(--en-page-pad-y, 48px)) 0;
  max-width: var(--en-container-max, 1400px);
  margin: 0 auto;
}

.project-intro-header {
  position: absolute;
  top: calc(var(--en-single-pt, var(--en-page-pad-y, 48px)) - var(--en-space-md, 24px));
  transform: translateY(-100%);
  width: 100%;
  left: 0;
  z-index: 10;
}

.project-intro-header,
.project-intro-content {
  display: grid;
  align-items: start;
  gap: var(--en-space-xl, 48px); /* 保持一致的横向间距 */
}

/* split-half: 左右各 1/2 */
.project-intro-split-half .project-intro-header,
.project-intro-split-half .project-intro-content {
  grid-template-columns: 1fr 1fr;
}

/* left-third: 左 1/3 右 2/3 */
.project-intro-left-third .project-intro-header,
.project-intro-left-third .project-intro-content {
  grid-template-columns: 1fr 2fr;
}

/* right-third: 左 2/3 右 1/3 */
.project-intro-right-third .project-intro-header,
.project-intro-right-third .project-intro-content {
  grid-template-columns: 2fr 1fr;
}

/* left-full: 全宽单列 */
.project-intro-left-full .project-intro-header,
.project-intro-left-full .project-intro-content {
  grid-template-columns: 1fr;
}

/* --- 独立定位逻辑 --- */
.project-intro-heading.pos-full { grid-column: 1 / -1; }
.project-intro-heading.pos-left { grid-column: 1 / 2; }
.project-intro-heading.pos-right { grid-column: 2 / 3; }

/* In full width, occupy whole row */
.project-intro-left-full .project-intro-heading { grid-column: 1 / -1; }

.project-intro-info { grid-column: 1 / 2; }
.project-intro-desc { grid-column: 2 / 3; }

/* In full width, stack vertically */
.project-intro-left-full .project-intro-info,
.project-intro-left-full .project-intro-desc { grid-column: 1 / -1; }

.project-intro-full {
  max-width: 860px;
}

/* ── 文字悬浮 ──────────────────────────── */
.text-float .project-intro {
  position: relative;
  z-index: 2;
  margin-top: var(--en-single-float-y, 0px);
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
 * 3. 左右布局
 * ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.project-horizontal-wrap {
  display: grid;
  grid-template-columns: var(--en-single-text-cols, 1fr 3fr);
  gap: var(--en-space-lg, 32px);
  max-width: var(--en-container-max, 1400px);
  margin: 0 auto;
  padding: var(--en-page-pad-y, 48px) 0;
}

.project-sidebar {
  position: sticky;
  top: calc(var(--en-header-h, 80px) + var(--en-space-md, 20px));
  align-self: start;
}

/* 左右布局 + 悬浮 */
.text-float.layout-horizontal .project-sidebar {
  margin-top: var(--en-single-float-y, 0px);
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
 * 4. 文字组件通用样式
 * ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.project-category {
  font-size: var(--en-font-size-sm, 0.875rem);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--en-space-sm, 16px);
  color: var(--en-color-text-muted);
}

.project-title {
  font-size: var(--en-single-title-size, 40px);
  font-weight: var(--en-single-title-fw, 400);
  line-height: var(--en-single-title-lh, var(--en-line-height-tight));
  margin-bottom: var(--en-space-xs, 8px);
  color: var(--en-single-title-color, var(--en-color-text));
}

.project-subtitle {
  font-size: var(--en-single-subtitle-size, 20px);
  font-weight: var(--en-single-subtitle-fw, 400);
  color: var(--en-single-subtitle-color, var(--en-color-text));
  line-height: var(--en-single-subtitle-lh, 1.5);
  margin-bottom: 0; /* Clear margin since it is at bottom of header */
}

/* 项目信息 — 正文段落样式 */
.project-info {
  font-size: var(--en-single-meta-size, 1rem);
  font-weight: var(--en-single-meta-fw, 400);
  line-height: var(--en-single-meta-lh, 1.8);
  color: var(--en-color-text);
}

.project-info p {
  margin: 0 0 var(--en-space-xs, 8px);
}

/* 项目说明 — 正文段落样式 */
.project-description {
  font-size: var(--en-single-content-size, 1rem);
  font-weight: var(--en-single-content-fw, 400);
  line-height: var(--en-single-content-lh, 1.8);
  color: var(--en-color-text);
}

.project-description p {
  margin: 0 0 var(--en-space-md, 20px);
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
 * 5. 图集
 * ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.project-gallery {
  width: 100%;
  max-width: var(--en-container-max); /* 跟随全局容器宽度 */
  margin-left: auto;
  margin-right: auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: center; /* 确保单张半宽/三分之一宽图片居中 */
  gap: var(--en-single-gallery-gap, 2px);
  margin-top: var(--en-single-intro-gap, 0px);
}

.gallery-item {
  box-sizing: border-box;
  overflow: hidden;
  line-height: 0;
  font-size: var(--en-font-size-md, 1rem); /* 恢复文字块字号 */
}

.gallery-item img,
.gallery-item video {
  display: block;
  width: 100%;
  height: auto;
}

/* 宽度变体 */
.gallery-item-page-full {
  width: 100vw;
  max-width: 100vw;
  margin-left: calc(-50vw + 50%);
  margin-right: calc(-50vw + 50%);
}

.gallery-item-full {
  width: 100%;
}

.gallery-item-half {
  width: calc(50% - var(--en-single-gallery-gap, 2px) / 2);
}

.gallery-item-third {
  width: calc(33.3333% - var(--en-single-gallery-gap, 2px) * 2 / 3);
}

.gallery-item-two-thirds {
  width: calc(66.6666% - var(--en-single-gallery-gap, 2px) / 3);
}

.gallery-item-quarter {
  width: calc(25% - var(--en-single-gallery-gap, 2px) * 3 / 4);
}

.gallery-item-three-quarters {
  width: calc(75% - var(--en-single-gallery-gap, 2px) / 4);
}


/* 空白行 */
.gallery-item-spacer {
  display: block;
  width: 100%;
}

/* 文字块 */
.gallery-item-text {
  line-height: 1.8;
  padding: var(--en-page-pad-y, 48px) 0;
  font-size: var(--en-font-size-md, 1rem);
  color: var(--en-color-text);
}

.gallery-item-text[data-valign="top"] .gallery-text-content {
  display: flex;
  align-items: flex-start;
  min-height: 100%;
}

.gallery-item-text[data-valign="middle"] .gallery-text-content {
  display: flex;
  align-items: center;
  min-height: 100%;
}

.gallery-item-text[data-valign="bottom"] .gallery-text-content {
  display: flex;
  align-items: flex-end;
  min-height: 100%;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
 * 6. 推荐项目
 * ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
.project-related {
  max-width: var(--en-container-max, 1400px);
  margin: 0 auto;
  padding: var(--en-page-pad-y, 48px) 0;
  border-top: 1px solid var(--en-color-border);
}

.project-related-title {
  font-size: var(--en-font-size-lg, 1.25rem);
  font-weight: 400;
  margin: 0 0 var(--en-space-lg, 32px);
  color: var(--en-color-heading);
}

.project-related-grid {
  display: grid;
  grid-template-columns: repeat(var(--en-related-cols, 3), 1fr);
  gap: var(--en-grid-gap, 18px);
}

.project-related-item {
  display: block;
  text-decoration: none;
  color: var(--en-color-heading);
  background-color: var(--en-grid-card-bg, transparent);
  padding: var(--en-grid-card-padding, 0) var(--en-page-pad, 30px);
  transition: background-color var(--en-t-normal, 0.3s) ease, 
              opacity var(--en-t-normal, 0.3s) ease;
}

.project-related-item:hover {
  opacity: 1;
  background-color: var(--en-grid-card-hover-bg, var(--en-grid-card-bg, transparent));
}

@media screen and (max-width: 768px) {
  .project-related-item {
    padding-left: var(--en-page-pad-mobile, 15px);
    padding-right: var(--en-page-pad-mobile, 15px);
  }
}

.project-related-thumb {
  overflow: hidden;
  margin-bottom: var(--en-space-sm, 12px);
  aspect-ratio: var(--en-grid-aspect, 4/3);
}

.project-related-thumb img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--en-t-normal, 0.3s) ease;
}

.project-related-item:hover .project-related-thumb img {
  transform: scale(1.03);
}

.project-related-name {
  font-size: var(--en-font-size-sm, 0.875rem);
  font-weight: 400;
  margin: 0;
}

/* ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━
 * 7. 响应式
 * ━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━━ */
@media (max-width: 1024px) {
  .project-intro {
    gap: var(--en-space-lg, 32px);
  }

  .project-intro-header {
    position: static;
    transform: none;
    top: auto;
    width: auto;
  }

  .project-intro-header,
  .project-intro-content {
    grid-template-columns: 1fr !important;
    gap: var(--en-space-lg, 32px);
  }

  .project-intro-heading,
  .project-intro-info,
  .project-intro-desc {
    grid-column: 1 / -1 !important;
  }

  .project-horizontal-wrap {
    grid-template-columns: 1fr;
  }

  .project-sidebar {
    position: static;
  }

  .project-related-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 778px) {
  .single-project-page {
    padding-left: var(--en-page-pad-mobile, 15px);
    padding-right: var(--en-page-pad-mobile, 15px);
  }

  .project-intro,
  .project-horizontal-wrap,
  .gallery-item-text,
  .project-related {
    padding-top: var(--en-page-pad-y-mobile, 32px);
    padding-bottom: var(--en-page-pad-y-mobile, 32px);
  }

  .project-hero {
    height: 65vw;
    min-height: 280px;
    max-height: 560px;
  }

  .gallery-item-half,
  .gallery-item-third,
  .gallery-item-two-thirds,
  .gallery-item-quarter,
  .gallery-item-three-quarters {
    width: 100%;
  }

  .project-related-grid {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================
 * Carousel Layout 轮播布局专属样式
 * ========================================================== */
.layout-carousel {
  padding: 0 !important;
  max-width: 100% !important;
}

.layout-carousel .project-carousel-and-info-wrapper {
  position: relative;
  width: 100%;
}

.layout-carousel .project-carousel-wrap {
  width: 100%;
  position: relative;
  overflow: hidden;
  height: calc(100vh - var(--en-header-height, 0px) - var(--en-carousel-bar-h, 60px));
  min-height: 500px;
  background: #000; /* 纯黑背景 */
  cursor: none; /* 隐藏原生鼠标 */
}

.project-carousel-swiper {
  width: 100%;
  height: 100%;
  display: flex;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  -ms-overflow-style: none; /* IE and Edge */
  scrollbar-width: none; /* Firefox */
}
.project-carousel-swiper::-webkit-scrollbar {
  display: none; /* Safari and Chrome */
}

.project-carousel-swiper .swiper-wrapper {
  display: flex;
  height: 100%;
}

.project-carousel-swiper .project-slide {
  width: 100%; /* 一次只展示一张图 */
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  scroll-snap-align: center;
}

.project-carousel-swiper .project-slide img {
  height: 100%;
  width: 100%;
  max-width: none;
  object-fit: cover; /* 默认铺满全屏 */
}

.project-carousel-swiper .project-slide img.is-landscape {
  object-fit: cover; /* 横图全高全宽（铺满全屏边缘裁切） */
}

.project-carousel-swiper .project-slide img.is-portrait {
  object-fit: contain; /* 竖图只全高（左右留黑边） */
}

/* Hover Zones - Removed via JS handling but keeping class hiding if any exist */
.carousel-click-zone {
  display: none !important;
}

/* 底部网格系统 */
.layout-carousel .project-info-grid {
  display: flex;
  flex-direction: column;
  border-bottom: 1px solid var(--en-grid-border-color);
  width: 100%;
  box-sizing: border-box;
}

.layout-carousel .info-row {
  display: grid;
  grid-template-columns: 25% 50% 25%;
  border-top: 1px solid var(--en-grid-border-color);
  width: 100%;
}

.layout-carousel .info-cell {
  padding: var(--en-page-pad-y, 32px) var(--en-page-pad-x, 32px);
  border-right: 1px solid var(--en-grid-border-color);
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}
.layout-carousel .info-cell:last-child {
  border-right: none;
}

/* 字体排版 */
.layout-carousel .cell-title .project-title { 
  margin: 0 0 8px 0; 
  font-size: 1.25rem; 
  font-weight: 600; 
  line-height: 1.4;
}
.layout-carousel .cell-title .project-subtitle { 
  margin: 0; 
  opacity: 0.6; 
}
.layout-carousel .cell-desc {
  font-size: 1rem;
  line-height: 1.6;
}
.layout-carousel .cell-meta .project-info {
  opacity: 0.8;
  font-size: 0.95rem;
  line-height: 1.6;
}

/* 全局悬浮底部状态栏 (3宫格) */
.layout-carousel .carousel-sticky-bar {
  display: grid;
  grid-template-columns: 25% 50% 25%;
  width: 100%;
  height: var(--en-carousel-bar-h, 60px);
  position: sticky;
  bottom: 0;
  z-index: 50;
  border-top: 1px solid var(--en-grid-border-color);
  border-bottom: 1px solid var(--en-grid-border-color);
  margin-top: -1px; /* 消除与上方网格拼接时的双等粗边框 */
  background-color: var(--en-color-bg, #ffffff); /* 跟随内页全局背景色，自动适配暗模式 */
}

.layout-carousel .carousel-sticky-bar .info-cell {
  padding: 0 var(--en-page-pad-x, 32px);
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--en-color-text);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  display: block;
  line-height: var(--en-carousel-bar-h, 60px);
  border-right: 1px solid var(--en-grid-border-color);
  background-color: inherit;
}

.layout-carousel .carousel-sticky-bar .info-cell:last-child {
  border-right: none;
}

.layout-carousel .carousel-sticky-bar .cell-deco-left,
.layout-carousel .carousel-sticky-bar .cell-deco-center {
  opacity: 1; /* 保持100%不透明 */
}

/* 第三格：导航专用 */
.layout-carousel .carousel-sticky-bar .nav-cell {
  background-color: var(--en-carousel-nav-bg, #cdeb43);
  color: #111; /* 黑灰色保证在亮色背景如黄色上清晰可见 */
  padding: 0;
  display: grid;
  grid-template-columns: var(--en-carousel-bar-h, 60px) 1fr var(--en-carousel-bar-h, 60px);
}

.layout-carousel .carousel-sticky-bar .nav-cell .nav-prev,
.layout-carousel .carousel-sticky-bar .nav-cell .nav-next {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center; /* 严丝合缝地在一个正方形内居中展示原生箭头 */
  cursor: pointer;
  transition: background-color 0.2s;
}

.layout-carousel .carousel-sticky-bar .nav-cell .nav-prev:hover,
.layout-carousel .carousel-sticky-bar .nav-cell .nav-next:hover {
  background-color: rgba(0,0,0,0.08); /* 悬停微暗 */
}

.layout-carousel .carousel-sticky-bar .nav-page {
  font-family: var(--en-font-mono, monospace);
  font-size: 0.95rem;
  letter-spacing: 1px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* 移动端覆盖 */
@media (max-width: 1024px) {
  .layout-carousel .info-row {
    grid-template-columns: 1fr;
  }
  .layout-carousel .info-cell {
    border-right: none;
    border-bottom: 1px solid var(--en-grid-border-color);
  }
  .layout-carousel .info-row .info-cell:last-child {
    border-bottom: none;
  }
  
  /* 移动端的底栏：隐藏中间描述，重构为 1fr 和 140px 的左右布局 */
  .layout-carousel .carousel-sticky-bar {
    grid-template-columns: 1fr 140px;
  }
  .layout-carousel .carousel-sticky-bar .cell-deco-center {
    display: none;
  }
  .layout-carousel .carousel-sticky-bar .info-cell {
    border-right: none;
    border-bottom: none; /* 移除默认网格底部线条 */
  }
}

/* Project Cursor */
.project-cursor {
  position: fixed;
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: transparent;
  color: #fff;
  pointer-events: none;
  left: 0;
  top: 0;
  /* GPU acceleration applied via JS */
  z-index: 9999;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.4);
}
.project-cursor::after {
  content: '';
  display: block;
}
.project-cursor.arrow-left::after { content: '<'; font-size: 28px; font-weight: 300; font-family: monospace; }
.project-cursor.arrow-right::after { content: '>'; font-size: 28px; font-weight: 300; font-family: monospace; }
.project-cursor.icon-zoom::after { display: none; }

@media (max-width: 1024px) {
  .carousel-click-zone { display: none !important; }
  .carousel-numbers {
    bottom: 20px;
    padding: 0 20px;
  }

  /* 移动端正方形模式 */
  .is-mobile-square.layout-carousel .project-carousel-wrap {
    height: 100vw !important;
    min-height: 100vw !important;
    max-height: 100vw !important;
  }
}