/* ==========================================================
 * Portfolio Grid — 作品网格组件样式
 * 依赖 tokens.css 中的 CSS 变量
 * ========================================================== */

/* ── 网格容器 ─────────────────────────────────────────── */
.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(var(--en-grid-cols-dt, 3), 1fr);
  gap: var(--en-grid-gap, 18px);
  width: 100%;
}

/* ── 线框网格模式 (Outlined Grid) ─────────────────────────── */
.portfolio-grid.is-outlined-grid {
  gap: 0 !important; /* 线框模式下必须强制消除间距，以保证边框完美贴合形成十字线 */
  border-top: 1px solid var(--en-grid-border-color);
  border-left: 1px solid var(--en-grid-border-color);
}

.portfolio-grid.is-outlined-grid .grid-item {
  border-right: 1px solid var(--en-grid-border-color);
  border-bottom: 1px solid var(--en-grid-border-color);
  box-sizing: border-box;
}

/* 在标准分离式卡片中，给图片加下划线来组成两格 */
.portfolio-grid.is-outlined-grid .card-default .card-media {
  border-bottom: 1px solid var(--en-grid-border-color);
}

/* 填充空缺网格的幽灵单位，确保线框画满 */
.portfolio-grid.is-outlined-grid .grid-ghost {
  min-height: 0;
  height: 100%;
  pointer-events: none;
}

/* 调整标准卡片在网格内的文本边距 */
.portfolio-grid.is-outlined-grid .card-default .project-summary {
  padding: 1.5rem; /* 线框内部保证呼吸感 */
}

/* ── 卡片公共基础 ─────────────────────────────────────── */
.card {
  position: relative;
  overflow: hidden;
}

.card-link {
  display: block;
  text-decoration: none;
  color: inherit;
}

.card-media {
  position: relative;
  overflow: hidden;
  background-color: var(--en-color-surface);
  aspect-ratio: var(--en-grid-aspect, 4 / 3);
}

.card-media .cover-image,
.card-media img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--en-t-slow, 0.6s) ease, opacity var(--en-t-normal, 0.3s) ease;
}

/* 悬浮视频 */
.card-media .project-cover-media {
  position: relative;
  overflow: hidden;
  width: 100%;
  height: 100%;
}

.card-media .hover-video {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity var(--en-t-normal, 0.3s) ease;
}

.card-link:hover .hover-video {
  opacity: 1;
}

/* 悬浮画廊轮播图片 */
.card-media .hover-gallery-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  z-index: 1; /* 盖在封面图之上 */
}

/* 通过 JS 控制 .is-active 类名实现无过渡快速切换 */
.card-media .hover-gallery-img.is-active {
  opacity: 1;
}

/* ── 分类筛选按钮 ─────────────────────────────────────── */
.portfolio-filter {
  display: flex;
  flex-wrap: wrap;
  justify-content: var(--en-portfolio-filter-align, flex-start);
  gap: var(--en-space-xs, 8px);
  margin-bottom: var(--en-space-md, 20px);
}

.filter-btn {
  background: transparent;
  border: 1px solid var(--en-color-border);
  border-radius: 4px;
  padding: 4px 12px;
  font-size: var(--en-font-size-sm, 13px);
  color: var(--en-color-muted);
  cursor: pointer;
  transition: all var(--en-t-fast, 0.2s) ease;
}

.filter-btn:hover,
.filter-btn.is-active {
  background: var(--en-portfolio-filter-active-bg, var(--en-color-heading));
  border-color: var(--en-portfolio-filter-active-bg, var(--en-color-heading));
  color: var(--en-portfolio-filter-active-color, var(--en-color-surface));
}

.filterbar-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* 排序下拉菜单 */
.en-sort-dropdown {
  position: relative;
  display: inline-block;
}

.en-sort-toggle {
  background: transparent;
  border: none;
  font-size: var(--en-font-size-sm, 13px);
  color: var(--en-color-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 0;
  transition: color var(--en-t-fast, 0.2s) ease;
}

.en-sort-toggle:hover {
  color: var(--en-color-heading);
}

.en-sort-toggle .arrow {
  font-size: 0.6em;
  transition: transform var(--en-t-fast, 0.2s) ease;
}

.en-sort-dropdown:hover .en-sort-toggle .arrow {
  transform: rotate(180deg);
}

.en-sort-menu {
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--en-color-surface);
  border: 1px solid var(--en-color-border);
  border-radius: 4px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
  min-width: 120px;
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
  transition: all var(--en-t-normal, 0.3s) cubic-bezier(0.2, 0, 0.2, 1);
  z-index: 100;
  list-style: none;
  margin: 8px 0 0;
  padding: 6px 0;
}

.en-sort-dropdown:hover .en-sort-menu,
.en-sort-dropdown.is-open .en-sort-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.en-sort-menu li {
  padding: 6px 16px;
  font-size: var(--en-font-size-sm, 13px);
  color: var(--en-color-muted);
  cursor: pointer;
  transition: all var(--en-t-fast, 0.2s) ease;
  white-space: nowrap;
}

.en-sort-menu li:hover,
.en-sort-menu li.is-active {
  color: var(--en-color-heading);
  background: var(--en-color-bg-dim, #f5f5f5);
}

.grid-item {
  transition: opacity 0.3s ease, transform 0.3s ease;
  min-width: 0; /* 防止内部内容（特别是无法折行的长文字）把 CSS Grid 网格轨道强制撑宽 */
}

.grid-item.is-hidden {
  display: none;
}

/* ── 悬浮动效系统 ─────────────────────────────────────── */

/* 1. Zoom (放大) */
.has-hover-zoom .card-media .cover-image,
.has-hover-zoom .card-media img {
  transform: scale(1);
}
.has-hover-zoom .card-link:hover .card-media .cover-image,
.has-hover-zoom .card-link:hover .card-media img {
  transform: scale(1.08); /* 相比之前 1.03 倍率显著增大 */
}

/* 2. Fade (渐隐) */
.has-hover-fade .card-media {
  background-color: #000; /* 强制底部变黑，否则渐逝会露出白底 */
}
.has-hover-fade .card-link:hover .card-media .cover-image,
.has-hover-fade .card-link:hover .card-media img {
  opacity: 0.5; /* 更深的纯正压暗效果 */
}

/* 3. Slide (上滑) */
.has-hover-slide .card-media .cover-image,
.has-hover-slide .card-media img {
  transform: scale(1.06); /* 提前将底图稍微放大一圈，以免上方移动时下方漏出无图空白底色 */
  transition: transform 0.6s cubic-bezier(0.25, 1, 0.5, 1);
}
.has-hover-slide .card-link:hover .card-media .cover-image,
.has-hover-slide .card-link:hover .card-media img {
  transform: scale(1.06) translateY(-8px);
}

/* 4. Blur (模糊) */
.has-hover-blur .card-media .cover-image,
.has-hover-blur .card-media img {
  transition: filter var(--en-t-normal, 0.3s) ease, transform var(--en-t-slow, 0.6s) ease;
}
.has-hover-blur .card-link:hover .card-media .cover-image,
.has-hover-blur .card-link:hover .card-media img {
  filter: blur(8px);
  transform: scale(1.05);
}

/* 5. Grayscale (底图置灰) */
.has-hover-grayscale .card-media .cover-image,
.has-hover-grayscale .card-media img {
  transition: filter var(--en-t-normal, 0.3s) ease, transform var(--en-t-slow, 0.6s) ease;
}
.has-hover-grayscale .card-link:hover .card-media .cover-image,
.has-hover-grayscale .card-link:hover .card-media img {
  filter: grayscale(100%);
}

/* 6. Zoom-Out (缩小) */
.has-hover-zoom-out .card-media .cover-image,
.has-hover-zoom-out .card-media img {
  transform: scale(1.1);
  transition: transform var(--en-t-slow, 0.6s) ease;
}
.has-hover-zoom-out .card-link:hover .card-media .cover-image,
.has-hover-zoom-out .card-link:hover .card-media img {
  transform: scale(1);
}

/* 7. None (无动效) */
.has-hover-none .card-link:hover .card-media .cover-image,
.has-hover-none .card-link:hover .card-media img {
  transform: none;
}

/* ── Card Default — 标准卡片 ─────────────────────────── */
.card-default {
  height: 100%;
}

.card-default .card-link {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.card-default .card-info {
  /* 当设置了高度变量时使用固定高度，无变量时回退到 auto 并受 flex-grow 影响 */
  flex-grow: 1;
  height: var(--en-grid-info-height, auto);
  min-height: var(--en-grid-info-height, auto);
  max-height: var(--en-grid-info-height, none);
  
  /* 严格锁定宽度，彻底切断 DOM 内容撑开导致的回流破坏 */
  width: 100%;
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
  
  padding: calc(var(--en-grid-card-padding, 24px) - 0.25em) var(--en-page-pad, 30px);
  text-align: var(--en-grid-text-align, left);
  background-color: var(--en-grid-card-bg, transparent);
  line-height: var(--en-line-height, 1.6);
  color: var(--en-grid-text-color, var(--en-color-text));
  transition: background-color var(--en-t-normal, 0.3s) ease, 
              color var(--en-t-normal, 0.3s) ease;
  
  /* 固定高度时的文字溢出处理，避免破坏网格 */
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
}

.card-default .card-link:hover .card-info {
  background-color: var(--en-grid-card-hover-bg, var(--en-grid-card-bg, transparent));
}

/* 强制文字拉齐左侧图片，也就是消除文字卡片的左右缩进 */
.portfolio-grid.is-flush-text .card-default .card-info {
  padding-left: 0;
  padding-right: 0;
}

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

.card-default .card-title {
  font-size: var(--en-grid-title-size, var(--en-font-size-base, 1rem));
  font-weight: var(--en-grid-title-fw, normal);
  margin: 0;
  color: var(--en-grid-title-color, var(--en-color-heading));
  line-height: var(--en-grid-title-lh, var(--en-line-height, 1.6));
  transition: color var(--en-t-normal, 0.3s) ease;
}

.card-default .card-link:hover .card-title {
  color: var(--en-color-accent, #000);
}

.card-default .card-subtitle {
  font-size: var(--en-grid-subtitle-size, var(--en-font-size-base, 1rem));
  font-weight: var(--en-grid-subtitle-fw, normal);
  color: inherit;
  margin: 0;
  line-height: var(--en-grid-subtitle-lh, var(--en-line-height, 1.6));
}

.card-default .card-category {
  font-size: var(--en-font-size-sm, 0.8125rem);
  color: var(--en-color-muted);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── Card Overlay — 叠加卡片 ─────────────────────────── */
.card-overlay .card-media {
  aspect-ratio: var(--en-grid-aspect, 3 / 4);
}

/* 颜色遮罩 */
.card-overlay .card-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--en-grid-overlay-bg, #000000);
  opacity: 0;
  transition: opacity var(--en-t-normal, 0.3s) ease;
  pointer-events: none;
  z-index: 1;
}

.card-overlay .card-link:hover .card-media::after {
  opacity: var(--en-grid-overlay-opacity, 0.4);
}



.card-overlay-info {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  padding: calc(var(--en-grid-card-padding, 24px) - 0.25em) var(--en-grid-card-padding, 24px);
  color: #fff;
  opacity: 0;
  z-index: 2;
  transition: opacity var(--en-t-normal, 0.3s) ease;
  text-align: var(--en-grid-text-align, left);
  line-height: var(--en-line-height, 1.6);
}

/* 垂直排布逻辑 */
.valign-top .card-overlay-info { justify-content: flex-start; }
.valign-middle .card-overlay-info { justify-content: center; }
.valign-bottom .card-overlay-info { justify-content: flex-end; }

.card-overlay .card-link:hover .card-overlay-info {
  opacity: 1;
}

/* 如果需要内部元素有小幅度移动动效 */
.card-overlay-info > * {
  transform: translateY(8px);
  transition: transform var(--en-t-normal, 0.3s) ease;
}
.card-overlay .card-link:hover .card-overlay-info > * {
  transform: translateY(0);
}

.card-overlay .card-title {
  font-size: var(--en-grid-title-size, var(--en-font-size-base, 1rem));
  font-weight: var(--en-grid-title-fw, normal);
  margin: 0;
  color: var(--en-grid-title-color, #fff);
  line-height: var(--en-grid-title-lh, inherit);
}

.card-overlay .card-subtitle {
  font-size: var(--en-grid-subtitle-size, var(--en-font-size-base, 1rem));
  font-weight: var(--en-grid-subtitle-fw, normal);
  color: var(--en-grid-text-color, rgba(255, 255, 255, 0.9));
  margin: 0;
  line-height: var(--en-grid-subtitle-lh, inherit);
}

.card-overlay .card-category {
  font-size: var(--en-font-size-sm, 0.8125rem);
  color: rgba(255, 255, 255, 0.75);
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ── Card Minimal — 极简卡片 ─────────────────────────── */
.card-minimal {
  border-top: 1px solid var(--en-color-border);
}

.card-minimal:last-child {
  border-bottom: 1px solid var(--en-color-border);
}

.card-minimal .card-link {
  display: block;
  padding: var(--en-space-md, 20px) 0;
  transition: background-color var(--en-t-normal, 0.3s) ease;
}

.card-minimal-inner {
  display: flex;
  align-items: center;
  gap: var(--en-space-md, 20px);
}

.card-minimal .card-title {
  flex: 1;
  font-size: var(--en-grid-title-size, var(--en-font-size-lg, 1.125rem));
  font-weight: var(--en-grid-title-fw, normal);
  margin: 0;
  color: var(--en-grid-title-color, var(--en-color-heading));
  transition: transform var(--en-t-normal, 0.3s) ease;
}

.card-minimal .card-link:hover .card-title {
  transform: translateX(4px);
}

.card-minimal .card-meta {
  display: flex;
  align-items: center;
  gap: var(--en-space-sm, 12px);
  font-size: var(--en-font-size-sm, 0.8125rem);
  color: var(--en-color-muted);
}

.card-minimal .card-arrow {
  font-size: 1.2rem;
  color: var(--en-color-muted);
  transition: transform var(--en-t-normal, 0.3s) ease,
              color var(--en-t-normal, 0.3s) ease;
}

.card-minimal .card-link:hover .card-arrow {
  transform: translateX(4px);
  color: var(--en-color-heading);
}

/* ── 响应式 ──────────────────────────────────────────── */
@media (max-width: 1024px) {
  .portfolio-grid {
    grid-template-columns: repeat(
      min(var(--en-grid-cols-dt, 3), 2),
      1fr
    );
  }
}

@media (max-width: 778px) {
  .portfolio-grid {
    grid-template-columns: 1fr;
    gap: var(--en-space-md, 20px);
  }

  /* 移动端正方形模式 */
  .is-mobile-square .card-media {
    aspect-ratio: 1 / 1 !important;
  }

  .card-overlay .card-overlay-info {
    opacity: 1;
    transform: translateY(0);
  }

  .card-minimal-inner {
    flex-wrap: wrap;
    gap: var(--en-space-xs, 8px);
  }
}

/* ── 方向感知遮罩 (Directional Slide) ─────────────────── */
.card-default .card-media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--en-grid-overlay-bg, #000000);
  opacity: 0;
  pointer-events: none;
  z-index: 1;
  transition: opacity var(--en-t-normal, 0.3s) ease;
}

.has-hover-directional .card-media::after,
.has-hover-directional .card-overlay-info {
  transition: transform 0.4s cubic-bezier(0.25, 1, 0.5, 1), opacity 0.4s ease;
  will-change: transform;
}

/* 基本的叠加位置隐藏 */
.has-hover-directional .card-media::after,
.has-hover-directional .card-overlay-info {
  opacity: 0;
}

/* 强制清除掉默认 overlay 在内部元素的上移效果 */
.has-hover-directional .card-overlay-info > *,
.has-hover-directional .card-info > * {
  transform: none !important;
  transition: none !important;
}

/* 准备进入阶段：瞬间到达边缘，取消所有过渡动画 */
.has-hover-directional .card-link.dir-enter-prepare .card-media::after,
.has-hover-directional .card-link.dir-enter-prepare .card-overlay-info {
  transition: none !important;
}

/* 定义方向起始位置 */
/* TOP */
.has-hover-directional .card-link.in-top .card-media::after,
.has-hover-directional .card-link.in-top .card-overlay-info,
.has-hover-directional .card-link.out-top .card-media::after,
.has-hover-directional .card-link.out-top .card-overlay-info {
  transform: translate3d(0, -100%, 0);
}

/* RIGHT */
.has-hover-directional .card-link.in-right .card-media::after,
.has-hover-directional .card-link.in-right .card-overlay-info,
.has-hover-directional .card-link.out-right .card-media::after,
.has-hover-directional .card-link.out-right .card-overlay-info {
  transform: translate3d(100%, 0, 0);
}

/* BOTTOM */
.has-hover-directional .card-link.in-bottom .card-media::after,
.has-hover-directional .card-link.in-bottom .card-overlay-info,
.has-hover-directional .card-link.out-bottom .card-media::after,
.has-hover-directional .card-link.out-bottom .card-overlay-info {
  transform: translate3d(0, 100%, 0);
}

/* LEFT */
.has-hover-directional .card-link.in-left .card-media::after,
.has-hover-directional .card-link.in-left .card-overlay-info,
.has-hover-directional .card-link.out-left .card-media::after,
.has-hover-directional .card-link.out-left .card-overlay-info {
  transform: translate3d(-100%, 0, 0);
}

/* 正式悬停状态：平滑返回 0,0 原点 */
.has-hover-directional .card-link.is-hovered .card-media::after,
.has-hover-directional .card-link.is-hovered .card-overlay-info {
  transform: translate3d(0, 0, 0);
}

/* 保证在整个推拉动画的“过程中”，它的透明度维持实心状态，直至动画完毕 */
.has-hover-directional .card-link.in-top .card-media::after,
.has-hover-directional .card-link.in-right .card-media::after,
.has-hover-directional .card-link.in-bottom .card-media::after,
.has-hover-directional .card-link.in-left .card-media::after,
.has-hover-directional .card-link.is-hovered .card-media::after,
.has-hover-directional .card-link.dir-leave .card-media::after {
  opacity: var(--en-grid-overlay-opacity, 0.4);
}

.has-hover-directional .card-link.in-top .card-overlay-info,
.has-hover-directional .card-link.in-right .card-overlay-info,
.has-hover-directional .card-link.in-bottom .card-overlay-info,
.has-hover-directional .card-link.in-left .card-overlay-info,
.has-hover-directional .card-link.is-hovered .card-overlay-info,
.has-hover-directional .card-link.dir-leave .card-overlay-info {
  opacity: 1;
}

/* ==========================================================
   全宽容器边缘防溢出保护 (Edge-to-Edge Container Constraints)
   解决开启全宽 (.is-full-width) 时文本撞墙问题
   ========================================================== */

/* 强制给标题筛选栏等文本容易受害的地方增加侧边安全距离 */
.page-module-inner.is-full-width .portfolio-collection-title-wrap,
.page-module-inner.is-full-width .portfolio-collection-filterbar,
.page-module-inner.is-full-width .card-default .project-summary {
  padding-left: var(--en-page-pad, 30px);
  padding-right: var(--en-page-pad, 30px);
}

@media screen and (max-width: 768px) {
  .page-module-inner.is-full-width .portfolio-collection-title-wrap,
  .page-module-inner.is-full-width .portfolio-collection-filterbar,
  .page-module-inner.is-full-width .card-default .project-summary {
    padding-left: var(--en-page-pad-mobile, 15px);
    padding-right: var(--en-page-pad-mobile, 15px);
  }
}