/* ==========================================================================
   琴弦摄影 (Photo by String) - 现代摄影作品集设计系统
   Modern Minimalist Dark Photography Portfolio
   ========================================================================== */

:root {
  --bg-primary: #0b0c10;
  --bg-surface: #13151b;
  --bg-surface-elevated: #1c1f26;
  --bg-glass: rgba(19, 21, 27, 0.78);
  --bg-glass-card: rgba(28, 31, 38, 0.65);
  --border-color: rgba(255, 255, 255, 0.08);
  --border-color-hover: rgba(212, 175, 114, 0.4);
  
  --text-primary: #f3f4f6;
  --text-secondary: #9ca3af;
  --text-muted: #6b7280;
  
  --accent-gold: #e2ba78;
  --accent-gold-hover: #edd19f;
  --accent-gold-glow: rgba(226, 186, 120, 0.25);
  
  --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.35);
  --shadow-hover: 0 16px 36px rgba(0, 0, 0, 0.6);
  --transition-smooth: all 0.35s cubic-bezier(0.16, 1, 0.3, 1);
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
}

/* 全局重置与平滑滚动 */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  color-scheme: dark;
}

body {
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", sans-serif;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  position: relative;
}

/* 优雅暗调质感背景纹理 */
body::before {
  content: "";
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-radial-gradient: circle at 50% 15%, rgba(226, 186, 120, 0.04) 0%, transparent 60%;
  pointer-events: none;
  z-index: 0;
}

a {
  color: inherit;
  text-decoration: none;
  transition: var(--transition-smooth);
}

img {
  max-width: 100%;
  display: block;
  user-select: none;
  -webkit-user-drag: none;
}

/* ==========================================================================
   1. 顶部毛玻璃导航栏 (Frosted Navbar)
   ========================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  padding: 1.1rem 2rem;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
  transition: var(--transition-smooth);
}

.site-header.scrolled {
  padding: 0.75rem 2rem;
  background: rgba(11, 12, 16, 0.92);
  border-bottom-color: rgba(226, 186, 120, 0.15);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.5);
}

.nav-container {
  max-width: 1560px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-icon {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1.5px solid var(--accent-gold);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent-gold);
  font-size: 0.9rem;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: #fff;
}

.brand-sub {
  font-size: 0.65rem;
  letter-spacing: 3px;
  color: var(--accent-gold);
  text-transform: uppercase;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-size: 0.92rem;
  color: var(--text-secondary);
  position: relative;
  padding: 0.3rem 0;
  letter-spacing: 1px;
}

.nav-link:hover,
.nav-link.active {
  color: var(--accent-gold);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--accent-gold);
  transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* ==========================================================================
   2. 巨幕 Hero 展示区 (Hero Banner)
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: 92vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 8rem 2rem 5rem;
  overflow: hidden;
}

.hero-background-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
}

.hero-bg-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 38%;
  filter: brightness(0.68) contrast(1.08);
  transform: scale(1.02);
  transition: transform 12s ease-out;
  animation: heroKenBurns 28s infinite alternate ease-in-out;
}

@keyframes heroKenBurns {
  0% { transform: scale(1.02) translate(0, 0); }
  100% { transform: scale(1.1) translate(-1%, -1.5%); }
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle at center, rgba(11, 12, 16, 0.3) 0%, rgba(11, 12, 16, 0.85) 75%, rgba(11, 12, 16, 0.98) 100%),
              linear-gradient(to bottom, rgba(11, 12, 16, 0.4) 0%, transparent 40%, var(--bg-primary) 100%);
}

.hero-content {
  max-width: 960px;
  z-index: 2;
  margin-top: 1rem;
  animation: heroFadeIn 1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes heroFadeIn {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.hero-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1.2rem;
  background: rgba(226, 186, 120, 0.12);
  border: 1px solid rgba(226, 186, 120, 0.3);
  border-radius: 999px;
  color: var(--accent-gold);
  font-size: 0.82rem;
  letter-spacing: 2px;
  margin-bottom: 1.8rem;
  backdrop-filter: blur(8px);
}

.hero-title {
  font-size: clamp(2.4rem, 5.5vw, 4.4rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: 4px;
  color: #fff;
  margin-bottom: 1.2rem;
  text-shadow: 0 4px 24px rgba(0, 0, 0, 0.7);
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.4rem);
  color: #e5e7eb;
  font-weight: 300;
  letter-spacing: 6px;
  margin-bottom: 2rem;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.6);
}

.hero-desc {
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto 2.5rem;
  font-size: 1.02rem;
  line-height: 1.8;
  font-weight: 300;
}

.hero-stats-row {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-bottom: 3rem;
}

.stat-item {
  display: flex;
  flex-direction: column;
}

.stat-number {
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent-gold);
  letter-spacing: 1px;
}

.stat-label {
  font-size: 0.78rem;
  color: var(--text-secondary);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.hero-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1.2rem;
}

.btn-primary-art {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: linear-gradient(135deg, var(--accent-gold) 0%, #c49952 100%);
  color: #0b0c10;
  padding: 0.85rem 2.2rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  border: none;
  cursor: pointer;
  box-shadow: 0 4px 20px var(--accent-gold-glow);
  transition: var(--transition-smooth);
}

.btn-primary-art:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(226, 186, 120, 0.4);
  color: #000;
}

.btn-secondary-art {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.85rem 1.8rem;
  border-radius: 999px;
  font-size: 0.95rem;
  letter-spacing: 1.5px;
  backdrop-filter: blur(10px);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.btn-secondary-art:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.25);
  color: #fff;
  transform: translateY(-2px);
}

.scroll-indicator {
  position: absolute;
  bottom: 1.8rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.4rem;
  color: var(--text-muted);
  font-size: 0.72rem;
  letter-spacing: 2px;
  cursor: pointer;
  animation: bounce 2.2s infinite ease-in-out;
}

@keyframes bounce {
  0%, 100% { transform: translate(-50%, 0); }
  50% { transform: translate(-50%, 8px); }
}

/* ==========================================================================
   3. 作品展示主区域 (Gallery Main)
   ========================================================================== */
.gallery-section {
  max-width: 1720px;
  margin: 0 auto;
  padding: 4rem 2rem 6rem;
  position: relative;
}

.section-header {
  text-align: center;
  margin-bottom: 2.5rem;
}

.section-eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  color: var(--accent-gold);
  letter-spacing: 4px;
  text-transform: uppercase;
  margin-bottom: 0.6rem;
}

.section-title {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 700;
  letter-spacing: 2px;
  color: #fff;
  margin-bottom: 1rem;
}

.section-line {
  width: 48px;
  height: 2px;
  background: var(--accent-gold);
  margin: 0 auto;
  border-radius: 2px;
}

/* 分类筛选器 (Filter Bar) */
.filter-container {
  position: sticky;
  top: 72px;
  z-index: 100;
  background: rgba(11, 12, 16, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  padding: 1rem 0;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-color);
  border-top: 1px solid rgba(255, 255, 255, 0.03);
}

.filter-wrapper {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

.filter-pills {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  overflow-x: auto;
  padding: 0.25rem 0.2rem;
  scrollbar-width: none;
  -ms-overflow-style: none;
}

.filter-pills::-webkit-scrollbar {
  display: none;
}

.filter-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 0.5rem 1.1rem;
  border-radius: 999px;
  font-size: 0.86rem;
  letter-spacing: 1px;
  cursor: pointer;
  white-space: nowrap;
  transition: var(--transition-smooth);
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
}

.filter-btn .count-badge {
  background: rgba(255, 255, 255, 0.08);
  padding: 0.1rem 0.45rem;
  border-radius: 12px;
  font-size: 0.72rem;
  color: var(--text-muted);
  transition: var(--transition-smooth);
}

.filter-btn:hover {
  background: var(--bg-surface-elevated);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.2);
}

.filter-btn.active {
  background: var(--accent-gold);
  color: #0b0c10;
  border-color: var(--accent-gold);
  font-weight: 600;
  box-shadow: 0 2px 14px var(--accent-gold-glow);
}

.filter-btn.active .count-badge {
  background: rgba(0, 0, 0, 0.18);
  color: #0b0c10;
}

/* 布局密度切换器 */
.view-mode-toggles {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.25rem;
}

.view-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 0.4rem 0.6rem;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.95rem;
  transition: var(--transition-smooth);
}

.view-btn:hover {
  color: var(--text-primary);
}

.view-btn.active {
  background: var(--bg-surface-elevated);
  color: var(--accent-gold);
}

/* ==========================================================================
   4. 现代响应式自适应瀑布流网格 (Masonry Grid)
   ========================================================================== */
.photo-masonry-grid {
  column-count: 4;
  column-gap: 1.5rem;
  transition: all 0.4s ease;
}

/* 视口响应式列数 */
@media (min-width: 1920px) {
  .photo-masonry-grid {
    column-count: 5;
    column-gap: 1.8rem;
  }
}

@media (max-width: 1400px) {
  .photo-masonry-grid {
    column-count: 3;
    column-gap: 1.4rem;
  }
}

@media (max-width: 900px) {
  .photo-masonry-grid {
    column-count: 2;
    column-gap: 1rem;
  }
}

@media (max-width: 580px) {
  .photo-masonry-grid {
    column-count: 1;
    column-gap: 0;
  }
}

/* 大图单列/双列模式 */
.photo-masonry-grid.view-spacious {
  column-count: 3;
  column-gap: 2rem;
}

@media (max-width: 1100px) {
  .photo-masonry-grid.view-spacious {
    column-count: 2;
  }
}

@media (max-width: 650px) {
  .photo-masonry-grid.view-spacious {
    column-count: 1;
  }
}

/* 紧凑模式 */
.photo-masonry-grid.view-compact {
  column-count: 6;
  column-gap: 0.8rem;
}

@media (max-width: 1400px) {
  .photo-masonry-grid.view-compact {
    column-count: 4;
  }
}

@media (max-width: 850px) {
  .photo-masonry-grid.view-compact {
    column-count: 3;
  }
}

@media (max-width: 500px) {
  .photo-masonry-grid.view-compact {
    column-count: 2;
  }
}

/* 单个照片卡片 (Photo Card) */
.photo-card {
  break-inside: avoid;
  margin-bottom: 1.5rem;
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  position: relative;
  cursor: pointer;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1), 
              box-shadow 0.4s cubic-bezier(0.16, 1, 0.3, 1),
              border-color 0.4s ease;
}

.photo-card.hidden {
  display: none !important;
}

.photo-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
  border-color: var(--border-color-hover);
}

.photo-img-wrap {
  position: relative;
  overflow: hidden;
  background: #101217;
}

.photo-img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
  transition: transform 0.65s cubic-bezier(0.16, 1, 0.3, 1), filter 0.65s ease;
  filter: brightness(0.96);
}

.photo-card:hover .photo-img {
  transform: scale(1.045);
  filter: brightness(1.03);
}

/* 卡片浮层信息 (Hover Overlay) */
.photo-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(11, 12, 16, 0.92) 0%, rgba(11, 12, 16, 0.4) 40%, transparent 75%);
  opacity: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 1.25rem;
  transition: opacity 0.35s ease;
}

.photo-card:hover .photo-overlay {
  opacity: 1;
}

.photo-top-bar {
  display: flex;
  justify-content: flex-end;
}

.zoom-btn {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.15);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 0.9rem;
  transform: translateY(-10px);
  transition: all 0.3s ease;
}

.photo-card:hover .zoom-btn {
  transform: translateY(0);
}

.zoom-btn:hover {
  background: var(--accent-gold);
  color: #000;
}

.photo-info {
  transform: translateY(10px);
  transition: transform 0.35s ease;
}

.photo-card:hover .photo-info {
  transform: translateY(0);
}

.photo-series-tag {
  display: inline-block;
  font-size: 0.72rem;
  color: var(--accent-gold);
  letter-spacing: 1.5px;
  margin-bottom: 0.25rem;
  text-transform: uppercase;
}

.photo-name {
  font-size: 1.05rem;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.5px;
  margin-bottom: 0.2rem;
}

.photo-meta {
  font-size: 0.76rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

/* ==========================================================================
   5. 摄影师理念与个人介绍 (About & Philosophy)
   ========================================================================== */
.about-section {
  max-width: 1360px;
  margin: 2rem auto 6rem;
  padding: 0 2rem;
}

.about-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 4rem 3.5rem;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-subtle);
}

.about-card::before {
  content: "";
  position: absolute;
  top: -50px;
  right: -50px;
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, rgba(226, 186, 120, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.35fr;
  gap: 4rem;
  align-items: center;
}

@media (max-width: 960px) {
  .about-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }
  .about-card {
    padding: 2.5rem 1.8rem;
  }
}

.about-visual {
  position: relative;
}

.about-image-frame {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid rgba(226, 186, 120, 0.3);
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
  position: relative;
}

.about-image-frame img {
  width: 100%;
  height: auto;
  aspect-ratio: 4/3;
  object-fit: cover;
  transition: transform 0.8s ease;
}

.about-image-frame:hover img {
  transform: scale(1.03);
}

.about-stamp {
  position: absolute;
  bottom: -15px;
  right: -15px;
  background: var(--accent-gold);
  color: #0b0c10;
  padding: 0.8rem 1.2rem;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 1px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.about-content-col h3 {
  font-size: 2rem;
  font-weight: 700;
  color: #fff;
  margin-bottom: 0.6rem;
  letter-spacing: 1.5px;
}

.about-title-tag {
  color: var(--accent-gold);
  font-size: 0.88rem;
  letter-spacing: 2.5px;
  margin-bottom: 1.8rem;
  display: inline-block;
}

.about-text {
  color: var(--text-secondary);
  font-size: 0.98rem;
  line-height: 1.9;
  margin-bottom: 1.4rem;
  font-weight: 300;
}

.footprints-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  margin-top: 1.8rem;
}

.footprint-tag {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-color);
  padding: 0.35rem 0.9rem;
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.footprint-tag i {
  color: var(--accent-gold);
  font-size: 0.75rem;
}

/* ==========================================================================
   6. 悬浮黑胶音乐播放器 (Floating Vinyl Audio Player)
   ========================================================================== */
.floating-player {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 999;
  display: flex;
  align-items: center;
  background: rgba(19, 21, 27, 0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(226, 186, 120, 0.28);
  padding: 0.55rem 1.1rem 0.55rem 0.6rem;
  border-radius: 999px;
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.55);
  transition: var(--transition-smooth);
  cursor: pointer;
}

.floating-player:hover {
  transform: translateY(-3px) scale(1.02);
  border-color: var(--accent-gold);
  box-shadow: 0 12px 36px rgba(0, 0, 0, 0.7);
}

.vinyl-disc {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: repeating-radial-gradient(#111, #111 2px, #262626 3px, #111 4px);
  border: 2px solid #333;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-right: 0.85rem;
  position: relative;
  transition: transform 0.5s ease;
}

.vinyl-disc.playing {
  animation: spinVinyl 6s linear infinite;
}

@keyframes spinVinyl {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

.vinyl-center {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent-gold);
  border: 2px solid #111;
}

.player-info {
  display: flex;
  flex-direction: column;
  margin-right: 0.85rem;
}

.player-title {
  font-size: 0.82rem;
  font-weight: 600;
  color: #fff;
  letter-spacing: 0.5px;
  white-space: nowrap;
}

.player-artist {
  font-size: 0.7rem;
  color: var(--accent-gold);
  letter-spacing: 1px;
}

/* 声波律动动画 */
.audio-visualizer {
  display: flex;
  align-items: center;
  gap: 3px;
  height: 16px;
  margin-left: 0.2rem;
}

.vis-bar {
  width: 3px;
  height: 100%;
  background: var(--accent-gold);
  border-radius: 2px;
  transform-origin: bottom;
  transform: scaleY(0.2);
  transition: transform 0.2s ease;
}

.floating-player.playing .vis-bar:nth-child(1) { animation: soundWave 0.8s ease-in-out infinite alternate; }
.floating-player.playing .vis-bar:nth-child(2) { animation: soundWave 1.1s ease-in-out 0.2s infinite alternate; }
.floating-player.playing .vis-bar:nth-child(3) { animation: soundWave 0.7s ease-in-out 0.4s infinite alternate; }
.floating-player.playing .vis-bar:nth-child(4) { animation: soundWave 1.3s ease-in-out 0.1s infinite alternate; }

@keyframes soundWave {
  0% { transform: scaleY(0.25); }
  100% { transform: scaleY(1); }
}

/* ==========================================================================
   7. 专业全屏画廊灯箱 (Pro Gallery Lightbox)
   ========================================================================== */
.pro-lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 99999;
  background: rgba(7, 8, 11, 0.96);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  display: none;
  opacity: 0;
  transition: opacity 0.3s ease;
  user-select: none;
}

.pro-lightbox.active {
  display: flex;
  flex-direction: column;
  opacity: 1;
}

/* 灯箱顶部控制条 */
.lightbox-topbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.2rem 2.2rem;
  z-index: 10;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.7) 0%, transparent 100%);
}

.lb-title-group {
  display: flex;
  align-items: baseline;
  gap: 1rem;
}

.lb-series-name {
  color: var(--accent-gold);
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 1.5px;
}

.lb-counter {
  color: var(--text-muted);
  font-size: 0.85rem;
  letter-spacing: 1px;
}

.lb-controls {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.lb-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.1);
  color: #fff;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 1rem;
  transition: var(--transition-smooth);
}

.lb-btn:hover {
  background: var(--accent-gold);
  color: #000;
  border-color: var(--accent-gold);
}

/* 灯箱主视图区 (iOS相册滑动视口) */
.lightbox-stage {
  flex: 1;
  position: relative;
  width: 100vw;
  height: 100%;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0;
  touch-action: none !important;
}

.lb-slider-track,
.lb-slide,
.lb-img {
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
  -webkit-user-drag: none;
  -webkit-touch-callout: none;
  touch-action: none !important;
}

/* 连续无缝水平滑动轨道 (iOS Photos Slider Track) */
.lb-slider-track {
  position: absolute;
  top: 0;
  left: 0;
  width: 300vw;
  height: 100%;
  display: flex;
  flex-direction: row;
  will-change: transform;
  transform: translateX(-100vw);
  cursor: grab;
}

.lb-slider-track:active {
  cursor: grabbing;
}

/* 独立滑块单元 (前后带原生间距) */
.lb-slide {
  width: 100vw;
  height: 100%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem 2rem;
  box-sizing: border-box;
}

/* 滑块内图片 */
.lb-img {
  max-width: 90vw;
  max-height: 80vh;
  object-fit: contain;
  border-radius: 4px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.85);
  pointer-events: auto;
  transition: transform 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.lb-main-img.zoomed {
  transform: scale(1.65);
  cursor: zoom-out;
}

/* 导航箭头 */
.lb-arrow {
  position: absolute;
  z-index: 20;
  top: 50%;
  transform: translateY(-50%);
  width: 54px;
  height: 54px;
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-size: 1.3rem;
  cursor: pointer;
  transition: var(--transition-smooth);
  backdrop-filter: blur(8px);
}

.lb-arrow:hover {
  background: var(--accent-gold);
  color: #0b0c10;
  border-color: var(--accent-gold);
}

.lb-prev { left: 2rem; }
.lb-next { right: 2rem; }

@media (max-width: 768px) {
  .lb-prev { left: 0.8rem; width: 42px; height: 42px; }
  .lb-next { right: 0.8rem; width: 42px; height: 42px; }
}

/* 灯箱底部缩略图栏 */
.lightbox-thumb-strip {
  padding: 1rem 2rem;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.6rem;
  background: linear-gradient(to top, rgba(0, 0, 0, 0.7) 0%, transparent 100%);
  overflow-x: auto;
  scrollbar-width: none;
}

.lightbox-thumb-strip::-webkit-scrollbar {
  display: none;
}

.lb-thumb-item {
  width: 56px;
  height: 40px;
  border-radius: 4px;
  overflow: hidden;
  opacity: 0.4;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: var(--transition-smooth);
  flex-shrink: 0;
}

.lb-thumb-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.lb-thumb-item:hover {
  opacity: 0.8;
}

.lb-thumb-item.active {
  opacity: 1;
  border-color: var(--accent-gold);
  transform: scale(1.1);
}

/* ==========================================================================
   8. 网站页脚 (Site Footer)
   ========================================================================== */
.site-footer {
  background: #07080b;
  border-top: 1px solid var(--border-color);
  padding: 4rem 2rem 3rem;
  text-align: center;
  position: relative;
  padding-bottom: calc(4rem + env(safe-area-inset-bottom, 0px));
}

.footer-logo {
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 3px;
  color: #fff;
  margin-bottom: 0.5rem;
}

.footer-quote {
  font-size: 0.95rem;
  color: var(--accent-gold);
  letter-spacing: 3px;
  margin-bottom: 1.8rem;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 2.2rem;
  list-style: none;
  flex-wrap: wrap;
}

.footer-nav a {
  color: var(--text-secondary);
  font-size: 0.95rem;
  letter-spacing: 1px;
  padding: 0.4rem;
}

.footer-nav a:hover {
  color: var(--accent-gold);
}

.footer-copyright {
  font-size: 0.85rem;
  color: var(--text-muted);
  line-height: 1.9;
}

.footer-copyright a {
  color: var(--text-secondary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.footer-copyright a:hover {
  color: var(--accent-gold);
}

/* 返回顶部浮动按钮 */
.back-to-top {
  position: fixed;
  bottom: calc(2rem + env(safe-area-inset-bottom, 0px));
  left: 1.5rem;
  z-index: 990;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transform: translateY(15px);
  transition: var(--transition-smooth);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover,
.back-to-top:active {
  background: var(--accent-gold);
  color: #0b0c10;
  border-color: var(--accent-gold);
}

/* ==========================================================================
   9. 移动端专项深度优化 (Mobile & Touch Friendly Enhancements)
   针对长辈在手机端浏览的大字号、大触控区、无鼠标Hover适配
   ========================================================================== */

/* 触摸设备基础优化 */
@media (hover: none) and (pointer: coarse) {
  /* 移动端照片信息常驻显示在底部，长辈不费心就能看清作品名字 */
  .photo-overlay {
    opacity: 1 !important;
    background: linear-gradient(to top, rgba(11, 12, 16, 0.88) 0%, rgba(11, 12, 16, 0.4) 45%, transparent 80%) !important;
    padding: 0.9rem 1rem !important;
  }
  
  .photo-top-bar {
    opacity: 0.85;
  }
  
  .photo-info {
    transform: translateY(0) !important;
  }
  
  .photo-card:active {
    transform: scale(0.985);
  }
}

/* 屏幕宽度 <= 768px (主流手机 & 小型平板) */
@media (max-width: 768px) {
  /* 顶部导航 */
  .site-header {
    padding: 0.8rem 1.2rem;
  }
  
  .site-header.scrolled {
    padding: 0.65rem 1.2rem;
  }
  
  .brand-title {
    font-size: 1.15rem;
    letter-spacing: 1px;
  }
  
  .brand-sub {
    font-size: 0.6rem;
    letter-spacing: 2px;
  }
  
  .nav-links {
    display: none; /* 移动端精简顶部链接，把所有空间留给品牌和核心按钮 */
  }
  
  .nav-actions .btn-secondary-art {
    padding: 0.45rem 0.95rem !important;
    font-size: 0.82rem !important;
  }

  /* 巨幕 Hero 适配手机竖屏 */
  .hero-section {
    min-height: 75vh;
    padding: 6.5rem 1.2rem 3.5rem;
  }
  
  .hero-title {
    font-size: 2.35rem;
    letter-spacing: 2px;
    margin-bottom: 0.8rem;
  }
  
  .hero-subtitle {
    font-size: 1.05rem;
    letter-spacing: 3px;
    margin-bottom: 1.4rem;
  }
  
  .hero-desc {
    font-size: 0.95rem;
    line-height: 1.7;
    margin-bottom: 1.8rem;
    padding: 0 0.5rem;
  }
  
  .hero-stats-row {
    gap: 1.6rem;
    margin-bottom: 2.2rem;
  }
  
  .stat-number {
    font-size: 1.6rem;
  }
  
  .stat-label {
    font-size: 0.72rem;
  }
  
  .hero-actions {
    flex-direction: column;
    width: 100%;
    max-width: 320px;
    margin: 0 auto;
    gap: 0.9rem;
  }
  
  .btn-primary-art,
  .btn-secondary-art {
    width: 100%;
    justify-content: center;
    padding: 0.95rem 1.8rem;
    font-size: 1.02rem;
  }

  /* 画廊主展区 */
  .gallery-section {
    padding: 2.5rem 0.9rem 4rem;
  }
  
  .section-title {
    font-size: 1.75rem;
  }

  /* 分类筛选栏吸顶优化 */
  .filter-container {
    top: 52px;
    padding: 0.75rem 0;
    margin-bottom: 1.5rem;
  }
  
  .filter-wrapper {
    gap: 0.6rem;
  }
  
  .filter-pills {
    gap: 0.6rem;
    padding: 0.2rem 0.4rem;
    -webkit-overflow-scrolling: touch;
    scroll-snap-type: x proximity;
  }
  
  .filter-btn {
    padding: 0.65rem 1.15rem; /* 大号触控区域，长辈点按不费力 */
    font-size: 0.92rem;
    min-height: 42px;
    scroll-snap-align: center;
  }
  
  .filter-btn .count-badge {
    font-size: 0.75rem;
    padding: 0.15rem 0.5rem;
  }
  
  .view-mode-toggles {
    display: none; /* 手机端自动以最佳视觉呈现，隐藏多余的小按钮切换 */
  }

  /* 瀑布流网格在手机端自适应大图模式 */
  .photo-masonry-grid {
    column-count: 1; /* 手机默认大单列，让长辈最清晰地看清每一张大风景 */
    column-gap: 0;
  }
  
  .photo-card {
    margin-bottom: 1.25rem;
    border-radius: var(--radius-md);
  }
  
  .photo-name {
    font-size: 1.15rem; /* 标题大字清晰 */
  }
  
  .photo-series-tag {
    font-size: 0.78rem;
  }
  
  .photo-meta {
    font-size: 0.82rem;
  }

  /* 摄影师理念板块手机端排版 */
  .about-section {
    padding: 0 1rem;
    margin: 1.5rem auto 4rem;
  }
  
  .about-card {
    padding: 2rem 1.4rem;
    border-radius: var(--radius-md);
  }
  
  .about-content-col h3 {
    font-size: 1.55rem;
  }
  
  .about-text {
    font-size: 1rem;
    line-height: 1.85;
  }
  
  .footprints-tags {
    gap: 0.5rem;
  }
  
  .footprint-tag {
    font-size: 0.84rem;
    padding: 0.4rem 0.85rem;
  }

  /* 悬浮黑胶音乐播放器在手机端微型化，绝不遮挡照片 */
  .floating-player {
    bottom: calc(1.5rem + env(safe-area-inset-bottom, 0px));
    right: 1.2rem;
    padding: 0.4rem 0.8rem 0.4rem 0.45rem;
    border-radius: 999px;
    box-shadow: 0 6px 24px rgba(0, 0, 0, 0.65);
    background: rgba(19, 21, 27, 0.95);
  }
  
  .vinyl-disc {
    width: 38px;
    height: 38px;
    margin-right: 0.6rem;
  }
  
  .player-title {
    font-size: 0.78rem;
    max-width: 100px;
    overflow: hidden;
    text-overflow: ellipsis;
  }
  
  .player-artist {
    font-size: 0.65rem;
  }
  
  .audio-visualizer {
    display: none; /* 手机端简化 */
  }

  /* 手机端全屏灯箱优化 */
  .lightbox-topbar {
    padding: 0.9rem 1.2rem;
    padding-top: calc(0.9rem + env(safe-area-inset-top, 0px));
  }
  
  .lb-series-name {
    font-size: 1.05rem;
  }
  
  .lb-counter {
    font-size: 0.9rem;
  }
  
  .lb-btn {
    width: 44px;
    height: 44px;
    font-size: 1.15rem;
  }
  
  #lb-autoplay {
    display: none; /* 手机端精简按钮，保留放大和关闭 */
  }
  
  .lightbox-stage {
    padding: 0;
  }
  
  .lb-slide {
    padding: 0.5rem 0.6rem;
  }

  .lb-img {
    max-width: 98vw;
    max-height: 72vh;
    border-radius: 0;
  }
  
  /* 左右大触控切图区 */
  .lb-arrow {
    width: 48px;
    height: 48px;
    font-size: 1.4rem;
    background: rgba(0, 0, 0, 0.5);
    border: 1.5px solid rgba(255, 255, 255, 0.2);
  }
  
  .lb-prev { left: 0.6rem; }
  .lb-next { right: 0.6rem; }
  
  .lightbox-thumb-strip {
    padding: 0.6rem 1rem;
    padding-bottom: calc(0.6rem + env(safe-area-inset-bottom, 0px));
    gap: 0.45rem;
  }
  
  .lb-thumb-item {
    width: 50px;
    height: 36px;
  }
}

/* 屏幕宽度在 480px 到 900px 之间 (平板或大屏横屏手机) */
@media (min-width: 600px) and (max-width: 900px) {
  .photo-masonry-grid {
    column-count: 2;
    column-gap: 1.2rem;
  }
}