/* ============================================
   MOONLITE - 科技感灯饰网站样式
   ============================================ */

/* ---------- CSS 变量 ---------- */
:root {
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-card: #16161f;
  --bg-card-hover: #1c1c28;
  --bg-glass: rgba(18, 18, 26, 0.85);
  --text-primary: #e8e6f0;
  --text-secondary: #8a8898;
  --text-muted: #55536a;
  --accent: #c9a84c;
  --accent-dim: rgba(201, 168, 76, 0.15);
  --accent-glow: rgba(201, 168, 76, 0.4);
  --accent-2: #4ca8c9;
  --accent-2-dim: rgba(76, 168, 201, 0.15);
  --border: rgba(255, 255, 255, 0.06);
  --border-accent: rgba(201, 168, 76, 0.3);
  --shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
  --radius: 12px;
  --radius-sm: 8px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --font-display: 'Orbitron', sans-serif;
  --font-heading: 'Rajdhani', 'Noto Sans SC', sans-serif;
  --font-body: 'Noto Sans SC', sans-serif;
}

/* ---------- Reset ---------- */
*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; font-size: 16px; }
body {
  font-family: var(--font-body);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.7;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
a { text-decoration: none; color: inherit; }
img { max-width: 100%; display: block; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }
input, textarea { font-family: inherit; }

/* ---------- 自定义光标 ---------- */
.cursor-glow {
  position: fixed;
  width: 300px;
  height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
  z-index: 9999;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.5s;
  mix-blend-mode: screen;
}
body:hover .cursor-glow { opacity: 0.3; }

/* ---------- 粒子背景 ---------- */
#particleCanvas {
  position: fixed;
  top: 0; left: 0;
  width: 100%; height: 100%;
  z-index: 0;
  pointer-events: none;
}

/* ---------- 导航 ---------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 0 2rem;
  transition: var(--transition);
}
.nav.scrolled {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.nav-logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.logo-icon {
  font-size: 1.5rem;
  color: var(--accent);
  text-shadow: 0 0 20px var(--accent-glow);
}
.logo-text {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--text-primary);
}
.nav-links {
  display: flex;
  gap: 2.5rem;
}
.nav-link {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--text-secondary);
  transition: var(--transition);
  position: relative;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0;
  width: 0; height: 2px;
  background: var(--accent);
  transition: var(--transition);
}
.nav-link:hover, .nav-link.active {
  color: var(--accent);
}
.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}
.nav-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
}
.nav-menu-btn span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: var(--transition);
}

/* 移动端菜单 */
.mobile-menu {
  position: fixed;
  top: 72px; left: 0; right: 0;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  z-index: 99;
  padding: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  transform: translateY(-100%);
  opacity: 0;
  transition: var(--transition);
  border-bottom: 1px solid var(--border);
}
.mobile-menu.open {
  transform: translateY(0);
  opacity: 1;
}
.mobile-link {
  font-family: var(--font-heading);
  font-size: 1.1rem;
  letter-spacing: 2px;
  color: var(--text-secondary);
  transition: var(--transition);
}
.mobile-link:hover { color: var(--accent); }

/* ---------- Hero ---------- */
/* ---------- 页面Section切换 ---------- */
.section-active {
  animation: sectionFadeIn 0.4s ease-out;
}
.section-hidden {
  display: none !important;
}
@keyframes sectionFadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}
/* 非首页的section需要最小高度 */
#products.section-active,
#about.section-active,
#contact.section-active {
  min-height: 100vh;
  padding-top: 80px;
}

.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  overflow: hidden;
  z-index: 1;
}
.hero-light-beam {
  position: absolute;
  top: -20%;
  left: 50%;
  width: 2px;
  height: 140%;
  background: linear-gradient(to bottom, transparent, var(--accent-glow), transparent);
  transform: translateX(-50%) rotate(-15deg);
  opacity: 0.5;
  animation: beamFloat 8s ease-in-out infinite;
}
.beam-2 {
  transform: translateX(-50%) rotate(10deg);
  animation-delay: -3s;
  opacity: 0.3;
  left: 35%;
}
.beam-3 {
  transform: translateX(-50%) rotate(-5deg);
  animation-delay: -5s;
  opacity: 0.25;
  left: 65%;
}
@keyframes beamFloat {
  0%, 100% { transform: translateX(-50%) rotate(-15deg); opacity: 0.5; }
  50% { transform: translateX(-50%) rotate(-10deg); opacity: 0.7; }
}

.hero-content {
  position: relative;
  z-index: 2;
  padding: 2rem;
}
.hero-badge {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  letter-spacing: 4px;
  color: var(--accent);
  border: 1px solid var(--border-accent);
  padding: 0.5rem 1.5rem;
  border-radius: 50px;
  margin-bottom: 2rem;
  animation: fadeInUp 1s ease forwards;
  opacity: 0;
}
.hero-title {
  font-family: var(--font-display);
  font-weight: 900;
  line-height: 1;
  margin-bottom: 1.5rem;
}
.title-line {
  display: block;
  font-size: clamp(4rem, 12vw, 10rem);
  letter-spacing: 0.1em;
  color: var(--text-primary);
  animation: fadeInUp 1s ease forwards;
  opacity: 0;
  animation-delay: 0.2s;
}
.title-accent {
  background: linear-gradient(135deg, var(--accent) 0%, #e8d48b 50%, var(--accent-2) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation-delay: 0.4s;
  filter: drop-shadow(0 0 40px var(--accent-glow));
}
.hero-subtitle {
  font-size: clamp(1rem, 2.5vw, 1.4rem);
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
  animation: fadeInUp 1s ease forwards;
  opacity: 0;
  animation-delay: 0.6s;
  letter-spacing: 2px;
}
.hero-cta {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
  animation: fadeInUp 1s ease forwards;
  opacity: 0;
  animation-delay: 0.8s;
}

/* 按钮 */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 0.9rem 2rem;
  background: linear-gradient(135deg, var(--accent), #d4b35a);
  color: var(--bg-primary);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  letter-spacing: 1px;
  border-radius: 50px;
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.btn-primary::before {
  content: '';
  position: absolute;
  top: 0; left: -100%;
  width: 100%; height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255,255,255,0.3), transparent);
  transition: 0.5s;
}
.btn-primary:hover::before { left: 100%; }
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 8px 30px var(--accent-glow); }

.btn-ghost {
  display: inline-flex;
  align-items: center;
  padding: 0.9rem 2rem;
  border: 1px solid var(--border-accent);
  color: var(--accent);
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.9rem;
  letter-spacing: 1px;
  border-radius: 50px;
  transition: var(--transition);
}
.btn-ghost:hover {
  background: var(--accent-dim);
  transform: translateY(-2px);
}

/* 统计数字 */
.hero-stats {
  display: flex;
  gap: 3rem;
  justify-content: center;
  margin-top: 3rem;
  animation: fadeInUp 1s ease forwards;
  opacity: 0;
  animation-delay: 1s;
}
.stat { text-align: center; }
.stat-num {
  display: block;
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
}
.stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 1px;
}

/* 滚动提示 */
.hero-scroll-hint {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 0.7rem;
  letter-spacing: 3px;
}
.scroll-line {
  width: 1px;
  height: 40px;
  background: linear-gradient(to bottom, var(--accent), transparent);
  animation: scrollPulse 2s ease-in-out infinite;
}
@keyframes scrollPulse {
  0%, 100% { opacity: 1; height: 40px; }
  50% { opacity: 0.3; height: 20px; }
}

/* ---------- 首页精选产品 ---------- */
.hero-featured {
  margin-top: 4rem;
  width: 100%;
  max-width: 1200px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 2rem;
}
.hero-featured-title {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--accent);
  letter-spacing: 3px;
  text-transform: uppercase;
  text-align: center;
  margin-bottom: 2rem;
  position: relative;
}
.hero-featured-title::after {
  content: '';
  display: block;
  width: 60px;
  height: 2px;
  background: linear-gradient(to right, transparent, var(--accent), transparent);
  margin: 0.8rem auto 0;
}
.hero-featured-grid {
  display: grid;
  gap: 1.2rem;
  /* 默认4列不对称布局 */
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 200px;
}
/* 个性化布局：第1张大图占2列2行 */
.featured-large {
  grid-column: span 2;
  grid-row: span 2;
}
/* 第2张竖高图占1列2行 */
.featured-tall {
  grid-row: span 2;
}
.featured-small {
  grid-row: span 1;
}
/* 2个产品时 */
.featured-half {
  grid-column: span 2;
  grid-row: span 2;
}
.featured-card {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  cursor: pointer;
  border: 1px solid var(--border);
  transition: all var(--transition);
  background: var(--bg-card);
}
.featured-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-4px);
  box-shadow: 0 8px 32px rgba(201, 168, 76, 0.15);
}
.featured-card-img {
  width: 100%;
  height: 60%;
  overflow: hidden;
  position: relative;
}
.featured-large .featured-card-img,
.featured-half .featured-card-img {
  height: 65%;
}
.featured-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.featured-card:hover .featured-card-img img {
  transform: scale(1.08);
}
.featured-card-img .product-img-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  font-size: 3rem;
  color: var(--accent);
  opacity: 0.3;
  background: linear-gradient(135deg, var(--bg-card), var(--bg-card-hover));
}
.featured-card-info {
  padding: 0.8rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.featured-card-cat {
  font-size: 0.7rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 1px;
  font-family: var(--font-heading);
}
.featured-card-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.featured-card-desc {
  font-size: 0.75rem;
  color: var(--text-secondary);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.featured-card-price {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--accent);
  margin-top: auto;
}
.hero-featured-more {
  display: block;
  text-align: center;
  margin-top: 2rem;
  padding: 0.8rem 2rem;
  color: var(--accent);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  letter-spacing: 2px;
  border: 1px solid var(--border-accent);
  border-radius: 30px;
  transition: all var(--transition);
  width: fit-content;
  margin-left: auto;
  margin-right: auto;
}
.hero-featured-more:hover {
  background: var(--accent-dim);
  border-color: var(--accent);
  box-shadow: 0 4px 20px var(--accent-glow);
}

/* ---------- 后台精选产品选择器 ---------- */
.hero-product-item {
  transition: all 0.2s;
}
.hero-product-item:hover {
  border-color: var(--accent) !important;
}
.hero-product-item:active {
  cursor: grabbing;
}
.hero-product-drag {
  user-select: none;
}
.hero-product-add-btn:hover {
  border-color: var(--accent) !important;
  color: var(--accent) !important;
  background: var(--accent-dim) !important;
}

/* 响应式：平板 */
@media (max-width: 900px) {
  .hero-featured-grid {
    grid-template-columns: repeat(2, 1fr);
    grid-auto-rows: 180px;
  }
  .featured-large {
    grid-column: span 2;
    grid-row: span 1;
  }
  .featured-tall {
    grid-row: span 1;
  }
}
/* 响应式：手机 */
@media (max-width: 580px) {
  .hero-featured-grid {
    grid-template-columns: 1fr;
    grid-auto-rows: 160px;
  }
  .featured-large,
  .featured-half {
    grid-column: span 1;
    grid-row: span 1;
  }
  .hero-featured {
    padding: 0 1rem;
  }
}

/* ---------- Section 通用 ---------- */
section {
  position: relative;
  z-index: 1;
  padding: 6rem 2rem;
}
.section-header {
  text-align: center;
  margin-bottom: 4rem;
}
.section-tag {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  letter-spacing: 4px;
  color: var(--accent);
  margin-bottom: 1rem;
}
.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 4vw, 2.8rem);
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--text-primary);
  margin-bottom: 1rem;
}
.section-title.left { text-align: left; }
.section-desc {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 500px;
  margin: 0 auto;
}

/* ---------- 产品区域 ---------- */
.products {
  background: var(--bg-secondary);
}
.product-filters {
  display: flex;
  justify-content: center;
  gap: 0.8rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 0.5rem 1.5rem;
  font-size: 0.85rem;
  letter-spacing: 1px;
  color: var(--text-secondary);
  border: 1px solid var(--border);
  border-radius: 50px;
  transition: var(--transition);
  font-family: var(--font-heading);
}
.filter-btn:hover, .filter-btn.active {
  color: var(--accent);
  border-color: var(--border-accent);
  background: var(--accent-dim);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 2rem;
  max-width: 1400px;
  margin: 0 auto;
}

.product-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: var(--transition);
  cursor: pointer;
  position: relative;
}
.product-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
  opacity: 0;
  transition: var(--transition);
}
.product-card:hover {
  transform: translateY(-6px);
  border-color: var(--border-accent);
  box-shadow: 0 20px 60px rgba(0,0,0,0.5), 0 0 40px var(--accent-dim);
}
.product-card:hover::before { opacity: 1; }

.product-img-wrap {
  position: relative;
  height: 280px;
  overflow: hidden;
  background: linear-gradient(135deg, var(--bg-secondary), var(--bg-card));
  display: flex;
  align-items: center;
  justify-content: center;
}
.product-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.product-card:hover .product-img-wrap img {
  transform: scale(1.08);
}
.product-img-placeholder {
  font-size: 4rem;
  color: var(--text-muted);
  opacity: 0.3;
}
.product-img-count {
  position: absolute;
  bottom: 12px; right: 12px;
  background: rgba(0,0,0,0.6);
  color: var(--text-secondary);
  font-size: 0.7rem;
  font-family: var(--font-heading);
  letter-spacing: 1px;
  padding: 3px 8px;
  border-radius: 4px;
  z-index: 2;
}

/* 产品卡片轮播 */
.product-carousel {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}
.product-carousel-track {
  width: 100%;
  height: 100%;
}
.product-carousel-track img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  position: absolute;
  top: 0; left: 0;
  transition: opacity 0.4s ease;
}
.carousel-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 28px;
  height: 28px;
  background: rgba(0,0,0,0.5);
  color: var(--text-primary);
  border: none;
  border-radius: 50%;
  font-size: 1.1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transition: var(--transition);
  z-index: 3;
}
.carousel-prev { left: 8px; }
.carousel-next { right: 8px; }
.product-card:hover .carousel-arrow { opacity: 1; }
.carousel-arrow:hover { background: var(--accent); color: var(--bg-primary); }
.carousel-dots {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: 5px;
  z-index: 3;
}
.carousel-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: rgba(255,255,255,0.3);
  cursor: pointer;
  transition: var(--transition);
}
.carousel-dot.active {
  background: var(--accent);
  width: 18px;
  border-radius: 3px;
}
.product-badge {
  position: absolute;
  top: 12px; right: 12px;
  background: var(--accent);
  color: var(--bg-primary);
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 50px;
  letter-spacing: 1px;
}

.product-info {
  padding: 1.5rem;
}
.product-category {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  letter-spacing: 2px;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.product-name {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.5rem;
  letter-spacing: 0.5px;
}
.product-desc-short {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 1rem;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.product-price-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.product-price {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--accent);
}
.product-view-btn {
  font-size: 0.8rem;
  color: var(--text-muted);
  letter-spacing: 1px;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 4px;
}
.product-view-btn:hover { color: var(--accent); }
.product-view-btn svg {
  transition: transform var(--transition);
}
.product-card:hover .product-view-btn svg {
  transform: translateX(4px);
}

/* ---------- 分类视图标题 ---------- */
.category-header {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}
.category-view-header {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  padding: 1rem 0;
}
.category-back-btn {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--accent);
  padding: 0.5rem 1.2rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  transition: all var(--transition);
  white-space: nowrap;
}
.category-back-btn:hover {
  background: var(--accent-dim);
  border-color: var(--border-accent);
}
.category-view-title {
  font-family: var(--font-heading);
  font-size: 1.4rem;
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: 0.02em;
}

/* ---------- 加载更多（已弃用，保留兼容） ---------- */
.load-more-wrap {
  display: none;
}

/* ---------- 分页导航 ---------- */
.pagination-wrap {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.5rem;
  padding: 2.5rem 0 1rem;
  flex-wrap: wrap;
}
.page-btn {
  min-width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
}
.page-btn:hover:not(:disabled):not(.active) {
  background: var(--bg-card-hover);
  border-color: var(--border-accent);
  color: var(--accent);
}
.page-btn.active {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--bg-primary);
  font-weight: 700;
}
.page-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}
.page-ellipsis {
  color: var(--text-muted);
  font-size: 0.85rem;
  padding: 0 0.3rem;
  user-select: none;
}
.page-info {
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 0.8rem;
  margin-left: 1rem;
  letter-spacing: 1px;
}

.products-empty {
  text-align: center;
  padding: 4rem 2rem;
  color: var(--text-muted);
}
.empty-icon {
  font-size: 4rem;
  opacity: 0.2;
  margin-bottom: 1rem;
}

/* ---------- 关于区域 ---------- */
.about {
  overflow: hidden;
}
.about-grid {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}
.about-visual {
  position: relative;
  height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.about-glow {
  position: absolute;
  width: 300px; height: 300px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--accent-dim) 0%, transparent 70%);
  animation: pulseGlow 4s ease-in-out infinite;
}
@keyframes pulseGlow {
  0%, 100% { transform: scale(1); opacity: 0.5; }
  50% { transform: scale(1.2); opacity: 0.8; }
}
.about-pattern {
  position: absolute;
  width: 200px; height: 200px;
  border: 1px solid var(--border-accent);
  border-radius: 50%;
  animation: rotateSlow 20s linear infinite;
}
@keyframes rotateSlow { to { transform: rotate(360deg); } }
.about-text-block {
  position: relative;
  z-index: 2;
  text-align: center;
}
.about-big-text {
  display: block;
  font-family: var(--font-display);
  font-size: clamp(4rem, 8vw, 7rem);
  font-weight: 900;
  letter-spacing: 0.1em;
  color: var(--accent);
  line-height: 1;
}
.about-big-text.outline {
  -webkit-text-stroke: 2px var(--accent);
  -webkit-text-fill-color: transparent;
  opacity: 0.4;
}

.about-content { padding-left: 2rem; }
.about-text {
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.8;
}
.about-features {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.feature-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}
.feature-icon {
  width: 40px;
  height: 40px;
  min-width: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-sm);
  color: var(--accent);
  font-size: 1rem;
}
.feature-item h4 {
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}
.feature-item p {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* ---------- 联系区域 ---------- */
.contact {
  background: var(--bg-secondary);
}
.contact-grid {
  max-width: 1000px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}
.contact-item {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  align-items: flex-start;
}
.contact-icon {
  width: 44px;
  height: 44px;
  min-width: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius-sm);
  color: var(--accent);
}
.contact-item h4 {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
  letter-spacing: 1px;
}
.contact-item p {
  font-size: 1rem;
  color: var(--text-primary);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}
.form-group input,
.form-group textarea {
  width: 100%;
  padding: 0.9rem 1.2rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: var(--transition);
  outline: none;
}
.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.form-group input::placeholder,
.form-group textarea::placeholder {
  color: var(--text-muted);
}
.form-group textarea { resize: vertical; min-height: 100px; }

/* ---------- 页脚 ---------- */
.footer {
  position: relative;
  z-index: 1;
  padding: 3rem 2rem;
  border-top: 1px solid var(--border);
}
.footer-inner {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1.5rem;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}
.footer-brand p {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-left: 1rem;
}
.footer-links {
  display: flex;
  gap: 2rem;
}
.footer-links a {
  font-size: 0.85rem;
  color: var(--text-secondary);
  transition: var(--transition);
}
.footer-links a:hover { color: var(--accent); }
.footer-copy p {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ---------- 弹窗 ---------- */
.modal-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.85);
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  backdrop-filter: blur(10px);
}
.modal-overlay.open { display: flex; }
.modal-content {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  max-width: 900px;
  width: 100%;
  max-height: 85vh;
  overflow-y: auto;
  position: relative;
}
.modal-close {
  position: absolute;
  top: 1rem; right: 1rem;
  width: 40px; height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--text-secondary);
  background: var(--bg-card);
  border-radius: 50%;
  transition: var(--transition);
  z-index: 10;
}
.modal-close:hover { color: var(--accent); background: var(--accent-dim); }

.modal-body {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
}
.modal-img {
  width: 100%;
  height: 100%;
  min-height: 400px;
  object-fit: cover;
  border-radius: var(--radius) 0 0 var(--radius);
}
.modal-img-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 400px;
  background: var(--bg-card);
  border-radius: var(--radius) 0 0 var(--radius);
  font-size: 5rem;
  color: var(--text-muted);
  opacity: 0.2;
}

/* 弹窗画廊 */
.modal-gallery {
  display: flex;
  flex-direction: column;
  border-radius: var(--radius) 0 0 var(--radius);
  overflow: hidden;
}
.gallery-main {
  position: relative;
  flex: 1;
  min-height: 320px;
  background: var(--bg-card);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.gallery-main-img {
  width: 100%;
  height: 100%;
  min-height: 320px;
  object-fit: cover;
  transition: opacity 0.3s ease;
}
.gallery-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 36px;
  height: 36px;
  background: rgba(0,0,0,0.5);
  color: var(--text-primary);
  border: none;
  border-radius: 50%;
  font-size: 1.4rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  transition: var(--transition);
  z-index: 3;
}
.gallery-prev { left: 10px; }
.gallery-next { right: 10px; }
.gallery-main:hover .gallery-arrow { opacity: 1; }
.gallery-arrow:hover { background: var(--accent); color: var(--bg-primary); }
.gallery-counter {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(0,0,0,0.6);
  color: var(--text-secondary);
  font-size: 0.75rem;
  font-family: var(--font-heading);
  letter-spacing: 1px;
  padding: 3px 10px;
  border-radius: 4px;
}
.gallery-thumbs {
  display: flex;
  gap: 4px;
  padding: 8px;
  background: var(--bg-card);
  overflow-x: auto;
  flex-shrink: 0;
}
.gallery-thumb {
  width: 56px;
  height: 56px;
  min-width: 56px;
  border-radius: 6px;
  overflow: hidden;
  cursor: pointer;
  border: 2px solid transparent;
  opacity: 0.5;
  transition: var(--transition);
}
.gallery-thumb:hover { opacity: 0.8; }
.gallery-thumb.active {
  border-color: var(--accent);
  opacity: 1;
  box-shadow: 0 0 10px var(--accent-dim);
}
.gallery-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.modal-detail {
  padding: 2.5rem;
}
.modal-category {
  font-family: var(--font-heading);
  font-size: 0.7rem;
  letter-spacing: 3px;
  color: var(--accent);
  text-transform: uppercase;
  margin-bottom: 0.5rem;
}
.modal-name {
  font-family: var(--font-display);
  font-size: 1.6rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 1rem;
  letter-spacing: 1px;
}
.modal-price {
  font-family: var(--font-display);
  font-size: 2rem;
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 1.5rem;
}
.modal-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.8;
  margin-bottom: 1.5rem;
}
.modal-specs {
  margin-bottom: 1.5rem;
}
.modal-specs h4 {
  font-size: 0.85rem;
  color: var(--text-muted);
  letter-spacing: 1px;
  margin-bottom: 0.75rem;
}
.spec-row {
  display: flex;
  justify-content: space-between;
  padding: 0.5rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.9rem;
}
.spec-row .spec-label { color: var(--text-secondary); }
.spec-row .spec-value { color: var(--text-primary); font-weight: 500; }
.modal-detail-content {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.8;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

/* ---------- 管理后台入口按钮 ---------- */
.admin-entry {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--text-muted);
  z-index: 50;
  transition: var(--transition);
}
.admin-entry:hover {
  color: var(--accent);
  border-color: var(--border-accent);
  box-shadow: 0 0 20px var(--accent-dim);
}

/* ---------- 动画 ---------- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.reveal {
  opacity: 0;
  transform: translateY(40px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ---------- 响应式 ---------- */
@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-menu-btn { display: flex; }
  .about-grid { grid-template-columns: 1fr; }
  .about-visual { height: 300px; }
  .about-content { padding-left: 0; }
  .contact-grid { grid-template-columns: 1fr; }
  .modal-body { grid-template-columns: 1fr; }
  .modal-img, .modal-img-placeholder,
  .modal-gallery {
    border-radius: var(--radius) var(--radius) 0 0;
    min-height: 250px;
  }
  .gallery-main { min-height: 220px; }
  .gallery-main-img { min-height: 220px; }
  .hero-stats { gap: 1.5rem; }
  .footer-inner { flex-direction: column; text-align: center; }
}
@media (max-width: 600px) {
  .product-grid { grid-template-columns: 1fr; }
  .hero-stats { flex-direction: column; gap: 1rem; }
  section { padding: 4rem 1rem; }
}

/* ---------- 滚动条 ---------- */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg-primary); }
::-webkit-scrollbar-thumb { background: var(--text-muted); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* ---------- 灯箱（图片放大查看） ---------- */
.lightbox {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 500;
  display: none;
  align-items: center;
  justify-content: center;
}
.lightbox.open {
  display: flex;
  animation: lbFadeIn 0.25s ease;
}
@keyframes lbFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}
.lightbox-backdrop {
  position: absolute;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(8px);
  cursor: zoom-out;
}
.lightbox-close {
  position: absolute;
  top: 1.5rem; right: 1.5rem;
  width: 44px; height: 44px;
  background: rgba(255,255,255,0.1);
  color: var(--text-primary);
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 50%;
  font-size: 1.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: var(--transition);
}
.lightbox-close:hover {
  background: var(--accent);
  color: var(--bg-primary);
  border-color: var(--accent);
  transform: rotate(90deg);
}
.lightbox-img-wrap {
  position: relative;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: center;
  max-width: 90vw;
  max-height: 90vh;
  cursor: zoom-out;
}
.lightbox-img {
  max-width: 90vw;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius);
  box-shadow: 0 20px 80px rgba(0,0,0,0.6);
  cursor: default;
  animation: lbZoomIn 0.3s ease;
}
@keyframes lbZoomIn {
  from { transform: scale(0.85); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}
.lightbox-arrow {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 50px; height: 50px;
  background: rgba(255,255,255,0.08);
  color: var(--text-primary);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 50%;
  font-size: 1.6rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: var(--transition);
}
.lightbox-arrow:hover {
  background: var(--accent);
  color: var(--bg-primary);
  border-color: var(--accent);
}
.lightbox-prev { left: 2rem; }
.lightbox-next { right: 2rem; }
.lightbox-counter {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0,0,0,0.6);
  color: var(--text-secondary);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  letter-spacing: 2px;
  padding: 0.4rem 1.2rem;
  border-radius: 50px;
  z-index: 10;
}

@media (max-width: 900px) {
  .lightbox-arrow { width: 40px; height: 40px; font-size: 1.3rem; }
  .lightbox-prev { left: 1rem; }
  .lightbox-next { right: 1rem; }
  .lightbox-img { max-width: 95vw; max-height: 80vh; }
}

/* ---------- 后台登录界面 ---------- */
.admin-login-overlay {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 400;
  background: rgba(0, 0, 0, 0.9);
  backdrop-filter: blur(20px);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}
.admin-login-overlay.open { display: flex; }

.admin-login-card {
  width: 100%;
  max-width: 400px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-accent);
  border-radius: var(--radius);
  padding: 3rem 2.5rem;
  text-align: center;
  position: relative;
  overflow: hidden;
  animation: loginSlideUp 0.4s ease;
}
.admin-login-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--accent), transparent);
}
@keyframes loginSlideUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.admin-login-logo {
  font-size: 3rem;
  color: var(--accent);
  text-shadow: 0 0 30px var(--accent-glow);
  margin-bottom: 1rem;
  animation: loginPulse 2s ease-in-out infinite;
}
@keyframes loginPulse {
  0%, 100% { opacity: 0.8; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.05); }
}

.admin-login-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 3px;
  margin-bottom: 2rem;
}

.admin-login-form {
  text-align: left;
}
.admin-login-form .admin-form-group {
  margin-bottom: 1rem;
}

.admin-login-btn {
  width: 100%;
  padding: 0.85rem;
  margin-top: 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 1px;
  border-radius: var(--radius-sm);
  justify-content: center;
}

.admin-login-error {
  color: #e74c3c;
  font-size: 0.85rem;
  text-align: center;
  padding: 0.5rem;
  background: rgba(231, 76, 60, 0.1);
  border-radius: 6px;
  margin: 0.5rem 0;
}

.admin-login-hint {
  text-align: center;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 1.5rem;
  letter-spacing: 0.5px;
}

/* ---------- 后台管理面板样式 ---------- */
.admin-panel {
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  z-index: 300;
  background: var(--bg-primary);
  display: none;
  flex-direction: column;
}
.admin-panel.open { display: flex; }

.admin-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1rem 2rem;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.admin-header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}
.admin-header h2 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: 2px;
}
.admin-header p {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.admin-close-btn {
  padding: 0.5rem 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-size: 0.85rem;
  transition: var(--transition);
}
.admin-close-btn:hover { border-color: var(--accent); color: var(--accent); }

.admin-body {
  display: flex;
  flex: 1;
  overflow: hidden;
}

/* 后台侧边栏 */
.admin-sidebar {
  width: 240px;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 1rem 0;
  flex-shrink: 0;
  overflow-y: auto;
}
.admin-nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.5rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  transition: var(--transition);
  cursor: pointer;
  border-left: 3px solid transparent;
}
.admin-nav-item:hover { color: var(--text-primary); background: rgba(255,255,255,0.03); }
.admin-nav-item.active {
  color: var(--accent);
  background: var(--accent-dim);
  border-left-color: var(--accent);
}
.admin-nav-item svg { width: 18px; height: 18px; flex-shrink: 0; }

/* 后台主内容区 */
.admin-main {
  flex: 1;
  padding: 2rem;
  overflow-y: auto;
}
.admin-section { display: none; }
.admin-section.active { display: block; }

.admin-section-title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: 1px;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}

/* 后台表单 */
.admin-form-group {
  margin-bottom: 1.25rem;
}
.admin-form-group label {
  display: block;
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
  letter-spacing: 0.5px;
}
.admin-form-group input,
.admin-form-group textarea,
.admin-form-group select {
  width: 100%;
  padding: 0.7rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-size: 0.9rem;
  transition: var(--transition);
  outline: none;
}
.admin-form-group input:focus,
.admin-form-group textarea:focus,
.admin-form-group select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-dim);
}
.admin-form-group textarea { resize: vertical; min-height: 80px; }
.admin-form-group select { cursor: pointer; }
.admin-form-group select option { background: var(--bg-card); }

.admin-form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.admin-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 0.6rem 1.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.85rem;
  font-weight: 500;
  transition: var(--transition);
}
.admin-btn-primary {
  background: var(--accent);
  color: var(--bg-primary);
}
.admin-btn-primary:hover { opacity: 0.9; transform: translateY(-1px); }
.admin-btn-danger {
  background: #e74c3c;
  color: #fff;
}
.admin-btn-danger:hover { opacity: 0.9; }
.admin-btn-secondary {
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
}
.admin-btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

/* 后台产品列表 */
.admin-product-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.admin-product-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.admin-product-item:hover { border-color: var(--border-accent); }
.admin-product-thumb {
  width: 60px;
  height: 60px;
  border-radius: 6px;
  overflow: hidden;
  background: var(--bg-secondary);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}
.admin-product-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.admin-product-thumb-placeholder {
  color: var(--text-muted);
  opacity: 0.3;
  font-size: 1.5rem;
}
.admin-product-info { flex: 1; min-width: 0; }
.admin-product-info h4 {
  font-size: 0.95rem;
  color: var(--text-primary);
  margin-bottom: 0.2rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.admin-product-info p {
  font-size: 0.8rem;
  color: var(--text-muted);
}
.admin-product-price {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  color: var(--accent);
  margin-right: 1rem;
  white-space: nowrap;
}
.admin-product-actions {
  display: flex;
  gap: 0.5rem;
  flex-shrink: 0;
}
.admin-product-actions button {
  padding: 0.4rem 0.8rem;
  font-size: 0.8rem;
  border-radius: 6px;
  transition: var(--transition);
}

/* 图片上传 */
.admin-image-upload {
  position: relative;
  border: 2px dashed var(--border);
  border-radius: var(--radius-sm);
  padding: 2rem;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  min-height: 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
}
.admin-image-upload:hover {
  border-color: var(--accent);
  background: var(--accent-dim);
}
.admin-image-upload input[type="file"] {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  opacity: 0;
  cursor: pointer;
}
.admin-image-upload .upload-icon {
  font-size: 2rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}
.admin-image-upload .upload-text {
  font-size: 0.85rem;
  color: var(--text-muted);
}
.admin-image-preview {
  max-width: 200px;
  max-height: 200px;
  object-fit: contain;
  border-radius: 6px;
  margin-top: 0.5rem;
}

/* 产品参数动态表单 */
.spec-fields {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.spec-field-row {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}
.spec-field-row input {
  flex: 1;
  padding: 0.5rem 0.75rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-primary);
  font-size: 0.85rem;
  outline: none;
}
.spec-field-row input:focus {
  border-color: var(--accent);
}
.spec-field-remove {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #e74c3c22;
  color: #e74c3c;
  border-radius: 6px;
  font-size: 1.2rem;
  flex-shrink: 0;
  transition: var(--transition);
}
.spec-field-remove:hover { background: #e74c3c44; }

.admin-add-spec-btn {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 0.4rem 1rem;
  font-size: 0.8rem;
  color: var(--accent);
  border: 1px dashed var(--border-accent);
  border-radius: 6px;
  margin-top: 0.5rem;
  transition: var(--transition);
}
.admin-add-spec-btn:hover { background: var(--accent-dim); }

/* 分类管理 */
.admin-category-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}
.admin-category-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.6rem 1rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
}
.admin-category-item span {
  color: var(--text-primary);
  font-size: 0.9rem;
}

/* 网站设置表 */
.admin-setting-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
}
.admin-setting-card h3 {
  font-size: 1rem;
  color: var(--accent);
  margin-bottom: 1rem;
  letter-spacing: 1px;
}

/* ---------- 语言切换按钮 ---------- */
.lang-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 50%;
  color: var(--accent);
  font-family: var(--font-display);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 1px;
  transition: var(--transition);
  cursor: pointer;
  margin-left: 0.5rem;
}
.lang-toggle:hover {
  border-color: var(--border-accent);
  box-shadow: 0 0 15px var(--accent-dim);
  transform: scale(1.05);
}
.lang-toggle.mobile {
  display: none;
}

/* ---------- 后台语言Tab ---------- */
.lang-tabs {
  display: inline-flex;
  gap: 0;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}
.lang-tab {
  padding: 0.5rem 1.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
  background: var(--bg-card);
  border: none;
  cursor: pointer;
  transition: var(--transition);
  letter-spacing: 0.5px;
}
.lang-tab:not(:last-child) {
  border-right: 1px solid var(--border);
}
.lang-tab:hover {
  color: var(--text-primary);
  background: var(--bg-card-hover);
}
.lang-tab.active {
  color: var(--bg-primary);
  background: var(--accent);
  font-weight: 600;
}

@media (max-width: 900px) {
  .nav-links .lang-toggle { display: none; }
  .lang-toggle.mobile { display: inline-flex; }
  .admin-sidebar { width: 200px; }
  .admin-form-row { grid-template-columns: 1fr; }
}
@media (max-width: 600px) {
  .admin-sidebar { display: none; }
  .admin-body { flex-direction: column; }
  .admin-form-row { grid-template-columns: 1fr; }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}