/* ============================================
   摄影页面独立布局样式 - 站点配色（--paper / --ink 体系）
   Photography Layout Styles
   ============================================ */

/* 变量：映射到站点基础色板，仅作用于摄影页 */
body.photography-layout {
  --photo-bg: var(--paper);
  --photo-bg-secondary: var(--grey-1);
  --photo-bg-tertiary: var(--grey-1-5);
  --photo-text: var(--ink);
  --photo-text-strong: var(--ink);
  --photo-text-secondary: var(--grey-3);
  --photo-text-muted: var(--grey-2-5);
  --photo-border: var(--grey-1-5);
  --photo-border-light: rgba(var(--ink-rgb), 0.06);
  --photo-shadow: rgba(var(--ink-rgb), 0.08);
  --photo-shadow-hover: rgba(var(--ink-rgb), 0.15);
  --photo-transition: cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================
   页面基础样式
   ============================================ */

body.photography-layout {
  background-color: var(--photo-bg);
  color: var(--photo-text);
  font-family: var(--sans);
}

/* 仅主内容容器通铺，避免影响 header / footer 内的 .container */
body.photography-layout main.container {
  max-width: 100%;
  padding: 0 0 40px;
}

/* 摄影页 header 半透明毛玻璃效果 */
body.photography-layout .site-header {
  background-color: rgba(var(--paper-rgb), 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
}

/* 小屏设备上 backdrop-filter 的合成开销明显，去掉模糊只保留半透明底色 */
@media (max-width: 768px) {
  body.photography-layout .site-header {
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
  }
}

/* ============================================
   主内容区域
   ============================================ */

body.photography-layout main {
  padding-top: 0;
  min-height: 100vh;
}

/* ============================================
   摄影页面内容样式
   ============================================ */

.photography-layout .photography-page {
  max-width: 100%;
  margin: 0;
  padding: 0;
}

/* 页面标题区域 */
.photography-layout .photography-hero {
  position: relative;
  min-height: 50vh;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 100px 24px 80px;
  overflow: hidden;
  isolation: isolate;
  background: linear-gradient(180deg, var(--photo-bg-secondary) 0%, var(--photo-bg) 100%);
}

.photography-layout .photography-hero-media {
  position: absolute;
  inset: 0;
  z-index: -2;
}

.photography-layout .photography-hero-media img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transform: scale(1.03);
  filter: saturate(0.95) contrast(0.96);
}

.photography-layout .photography-hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background:
    linear-gradient(180deg, rgba(10, 10, 10, 0.24) 0%, rgba(10, 10, 10, 0.46) 100%),
    radial-gradient(ellipse at 20% 30%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 70%, rgba(255, 255, 255, 0.08) 0%, transparent 50%);
  pointer-events: none;
  z-index: -1;
}

.photography-layout .photography-hero::after {
  content: '';
  position: absolute;
  inset: auto 0 0;
  height: 120px;
  background: linear-gradient(180deg, rgba(255, 255, 255, 0) 0%, var(--photo-bg) 100%);
  pointer-events: none;
  z-index: 0;
}

.photography-layout .photography-title {
  font-size: clamp(2.5rem, 8vw, 5rem);
  font-weight: 600;
  letter-spacing: -0.04em;
  margin-bottom: 1rem;
  color: #fff;
  text-shadow: 0 12px 30px rgba(0, 0, 0, 0.35);
  position: relative;
  z-index: 1;
}

.photography-layout .photography-description {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: rgba(255, 255, 255, 0.9);
  max-width: 600px;
  line-height: 1.6;
  position: relative;
  z-index: 1;
  text-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

/* 照片网格 - 居中限宽 1800px，瀑布流布局 */
.photography-layout .photography-gallery {
  display: block;
  padding: 20px 16px 0;
  background: var(--photo-bg);
  max-width: 1800px;
  margin: 0 auto;
}

/* 列数沿用原稿：每年按媒体数量取 1 / 2 / 3 列 */
.photography-layout .photography-year-grid {
  column-count: var(--photography-columns, 3);
  column-gap: 14px;
  margin-bottom: 3rem;
}

@media (max-width: 768px) {
  .photography-layout .photography-year-grid {
    column-count: 2;
    column-gap: 6px;
  }
}

@media (max-width: 480px) {
  .photography-layout .photography-year-grid {
    column-count: 1;
    column-gap: 0;
  }
}

/* 年份分组标题 */
.photography-layout .photography-year-heading {
  margin: 0 0 1.25rem;
  padding: 0 0 0.15rem;
  font-size: clamp(1.6rem, 3vw, 2.4rem);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  color: var(--photo-text-strong);
  line-height: 1;
}

/* 照片项目 */
.photography-layout .photography-item {
  break-inside: avoid;
  page-break-inside: avoid;
  display: inline-block;
  width: 100%;
  max-width: 100%;
  position: relative;
  margin: 0 0 14px;
  overflow: hidden;
  background: var(--photo-bg-secondary);
  cursor: pointer;
  border-radius: 8px;
  border: 1px solid rgba(0, 0, 0, 0.04);
  box-shadow: 0 10px 30px rgba(15, 15, 15, 0.08);
  transition: transform 0.3s var(--photo-transition), box-shadow 0.3s ease, border-color 0.3s ease;
}

.photography-layout .photography-item:hover {
  transform: translateY(-6px);
  border-color: rgba(0, 0, 0, 0.08);
  box-shadow: 0 18px 40px rgba(15, 15, 15, 0.14);
}

.photography-layout .photography-media {
  width: 100%;
  height: auto;
  max-height: min(68vh, 560px);
  object-fit: cover;
  display: block;
  transition: transform 0.6s var(--photo-transition);
}

.photography-layout .photography-item video.photography-media {
  aspect-ratio: 16 / 9;
  background: var(--photo-bg-secondary);
}

.photography-layout .photography-item:hover .photography-media {
  transform: scale(1.05);
}

/* 照片覆盖层 */
.photography-layout .photography-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.78) 0%, rgba(0, 0, 0, 0.08) 62%, transparent 100%);
  opacity: 0;
  transition: opacity 0.3s ease;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 1.5rem;
}

.photography-layout .photography-item:hover .photography-overlay {
  opacity: 1;
}

.photography-layout .photography-caption {
  color: #fff;
  font-size: 0.98rem;
  font-weight: 500;
  transform: translateY(10px);
  transition: transform 0.3s var(--photo-transition);
}

.photography-layout .photography-item:hover .photography-caption {
  transform: translateY(0);
}

.photography-layout .photography-meta {
  color: rgba(255, 255, 255, 0.74);
  font-size: 0.76rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-top: 0.45rem;
  transform: translateY(10px);
  transition: transform 0.3s var(--photo-transition) 0.05s;
}

.photography-layout .photography-item:hover .photography-meta {
  transform: translateY(0);
}

/* 查看图标 */
.photography-layout .photography-view-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%) scale(0.8);
  width: 64px;
  height: 64px;
  background: rgba(255, 255, 255, 0.82);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: all 0.3s var(--photo-transition);
  pointer-events: none;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.15);
}

.photography-layout .photography-item:hover .photography-view-icon {
  opacity: 1;
  transform: translate(-50%, -50%) scale(1);
}

.photography-layout .photography-view-icon svg {
  width: 24px;
  height: 24px;
  color: var(--photo-text-strong);
}

/* 空状态 */
.photography-layout .photography-empty {
  grid-column: 1 / -1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 50vh;
  text-align: center;
  padding: 4rem 2rem;
  color: var(--photo-text-secondary);
}

.photography-layout .photography-empty-icon {
  width: 80px;
  height: 80px;
  margin-bottom: 1.5rem;
  color: var(--photo-text-muted);
}

.photography-layout .photography-empty p {
  font-size: 1.125rem;
  color: var(--photo-text-secondary);
}

/* ============================================
   灯箱样式 - 深色背景突出照片
   ============================================ */

.photo-lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: rgba(0, 0, 0, 0.95);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.3s ease, visibility 0.3s ease;
  padding: 20px;
}

.photo-lightbox.active {
  opacity: 1;
  visibility: visible;
}

.photo-lightbox-image-wrapper {
  position: relative;
  max-width: 90vw;
  max-height: 85vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.photo-lightbox img,
.photo-lightbox video {
  max-width: 100%;
  max-height: 85vh;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.8);
}

.photo-lightbox img {
  transition: transform 0.1s ease-out;
  cursor: default;
}

.photo-lightbox video {
  width: min(90vw, 1280px);
  background: #000;
}

.photo-lightbox [hidden] {
  display: none !important;
}

.photo-lightbox img[style*="scale(1)"],
.photo-lightbox img:not([style*="scale"]) {
  cursor: default;
}

.photo-lightbox-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  background: rgba(255, 255, 255, 0.15);
  border: none;
  border-radius: 50%;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  z-index: 10;
}

.photo-lightbox-close:hover {
  background: rgba(255, 255, 255, 0.25);
  transform: scale(1.05);
}

.photo-lightbox-close svg {
  width: 20px;
  height: 20px;
}

/* 灯箱导航按钮 */
.photo-lightbox-nav {
  position: fixed;
  top: 50%;
  transform: translateY(-50%);
  width: 56px;
  height: 56px;
  background: rgba(255, 255, 255, 0.15);
  border: none;
  border-radius: 50%;
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
  opacity: 0;
  z-index: 10;
}

.photo-lightbox:hover .photo-lightbox-nav {
  opacity: 1;
}

.photo-lightbox-nav:hover {
  background: rgba(255, 255, 255, 0.25);
}

.photo-lightbox-nav.prev {
  left: 24px;
}

.photo-lightbox-nav.next {
  right: 24px;
}

.photo-lightbox-nav svg {
  width: 24px;
  height: 24px;
}

/* 灯箱信息栏 */
.photo-lightbox-info {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.8) 0%, transparent 100%);
  text-align: center;
  transform: translateY(100%);
  transition: transform 0.3s ease;
}

.photo-lightbox.active .photo-lightbox-info {
  transform: translateY(0);
}

.photo-lightbox.is-video {
  gap: 1rem;
}

.photo-lightbox.is-video .photo-lightbox-image-wrapper {
  max-height: none;
}

.photo-lightbox.is-video .photo-lightbox-info {
  position: static;
  width: min(90vw, 1280px);
  padding: 0;
  background: none;
  transform: none;
  pointer-events: none;
}

.photo-lightbox-caption {
  color: #fff;
  font-size: 1rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.photo-lightbox-counter {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.875rem;
}

/* 灯箱视频错误提示 */
.photo-lightbox-error {
  position: absolute;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  color: rgba(255, 255, 255, 0.7);
  pointer-events: none;
}

.photo-lightbox-error svg {
  width: 32px;
  height: 32px;
  color: rgba(255, 255, 255, 0.5);
}

.photo-lightbox-error-text {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.6);
  text-align: center;
}

/* ============================================
   响应式适配
   ============================================ */

@media (max-width: 768px) {
  .photography-layout .photography-hero {
    min-height: 40vh;
    padding: 90px 20px 60px;
  }

  .photography-layout .photography-title {
    font-size: 2rem;
  }

  .photography-layout .photography-gallery {
    padding: 16px 12px 0;
  }

  .photography-layout .photography-item {
    border-radius: 6px;
    margin-bottom: 10px;
  }

  .photography-layout .photography-media {
    max-height: min(60vh, 440px);
  }

  .photography-layout .photography-year-grid {
    column-gap: 10px;
    margin-bottom: 2.2rem;
  }

  .photography-layout .photography-year-heading {
    margin-bottom: 1rem;
    font-size: clamp(1.35rem, 5vw, 1.8rem);
  }

  .photo-lightbox-nav {
    display: none;
  }

  .photo-lightbox-close {
    top: 16px;
    right: 16px;
    width: 44px;
    height: 44px;
  }
}

@media (max-width: 480px) {
  .photography-layout .photography-overlay {
    opacity: 1;
    background: linear-gradient(to top, rgba(0, 0, 0, 0.6) 0%, transparent 60%);
  }

  .photography-layout .photography-media {
    max-height: 360px;
  }

  .photography-layout .photography-gallery {
    padding: 14px 10px 0;
  }

  .photography-layout .photography-year-heading {
    font-size: 1.2rem;
    letter-spacing: 0.05em;
  }

  .photography-layout .photography-caption,
  .photography-layout .photography-meta {
    transform: translateY(0);
  }

  .photography-layout .photography-view-icon {
    display: none;
  }
}

/* ============================================
   加载动画
   ============================================ */

/* 入场动画：默认隐藏，进入视口后由 JS 加 .is-revealed 播放，
   避免屏外元素也占用动画资源；无 JS 时由 <noscript> 兜底 */
body.photo-reveal .photography-item {
  opacity: 0;
}

body.photo-reveal .photography-item.is-revealed {
  animation: fadeInUp 0.6s ease forwards;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 图片加载占位：加载完成后由 JS 加 .is-loaded 关闭 shimmer */
.photography-layout .photography-item img.photography-media:not(.is-loaded) {
  background: linear-gradient(110deg, var(--photo-bg-secondary) 8%, var(--photo-bg-tertiary) 18%, var(--photo-bg-secondary) 33%);
  background-size: 200% 100%;
  animation: shimmer 1.5s linear infinite;
}

@keyframes shimmer {
  to {
    background-position-x: -200%;
  }
}

/* 尊重系统的"减少动效"偏好 */
@media (prefers-reduced-motion: reduce) {
  body.photo-reveal .photography-item,
  body.photo-reveal .photography-item.is-revealed {
    opacity: 1;
    animation: none;
  }

  .photography-layout .photography-item img.photography-media:not(.is-loaded) {
    animation: none;
  }
}