/* ============================================
   片仔癀国药堂 - 门店展示页面样式
   Design Tokens: DESIGN.md
   ============================================ */

/* Google Fonts - CN 优化 */
@import url('https://fonts.googleapis.cn/css2?family=Noto+Serif+SC:wght@400;600;700&family=Noto+Sans+SC:wght@300;400;500;600&display=swap');

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
  /* 色彩 */
  --color-brand-red: #E85D1A;
  --color-brand-red-dark: #C44A10;
  --color-warm-gold: #C4A265;
  --color-warm-gold-light: #D4B87A;
  --color-ivory-bg: #FDF8F0;
  --color-ink: #2E2A25;
  --color-ink-light: #5C5348;
  --color-card-bg: #F5F0E8;
  --color-card-border: #E8DFD0;
  --color-deep-brown: #8B3A0D;
  --color-white: #FFFFFF;

  /* 字体 */
  --font-serif: 'Noto Serif SC', 'STSong', 'SimSun', serif;
  --font-sans: 'Noto Sans SC', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;

  /* 间距 */
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 5rem;
  --space-section: 80px;

  /* 圆角 */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* 阴影 */
  --shadow-card: 0 2px 16px rgba(0, 0, 0, 0.06);
  --shadow-card-hover: 0 4px 24px rgba(0, 0, 0, 0.10);
  --shadow-nav: 0 1px 8px rgba(0, 0, 0, 0.06);

  /* 过渡 */
  --ease-standard: cubic-bezier(0.4, 0, 0.2, 1);
  --duration-fast: 200ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;

  /* 布局 */
  --max-width: 1200px;
  --nav-height: 72px;
}

/* ============================================
   Reset & Base
   ============================================ */
*,
*::before,
*::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-height);
}

body {
  background-color: var(--color-ivory-bg);
  color: var(--color-ink);
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img {
  display: block;
  max-width: 100%;
  height: auto;
}

a {
  color: inherit;
  text-decoration: none;
}

ul, ol {
  list-style: none;
}

/* ============================================
   Section Container
   ============================================ */
.section {
  padding: var(--space-section) 0;
}

.section-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.section-title {
  font-family: var(--font-serif);
  font-size: 2rem;
  font-weight: 700;
  color: var(--color-ink);
  text-align: center;
  margin-bottom: var(--space-xs);
  letter-spacing: 0.05em;
}

.section-subtitle {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-ink-light);
  text-align: center;
  margin-bottom: var(--space-3xl);
  letter-spacing: 0.04em;
}

.section-divider {
  width: 60px;
  height: 3px;
  background: var(--color-warm-gold);
  margin: var(--space-md) auto var(--space-lg);
  border-radius: 2px;
}

/* ============================================
   Navigation Bar
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background: rgba(253, 248, 240, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-card-border);
  box-shadow: var(--shadow-nav);
  transition: background var(--duration-normal) var(--ease-standard);
}

.nav-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.nav-logo {
  width: 44px;
  height: 44px;
  background: var(--color-brand-red);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  flex-shrink: 0;
}

.nav-brand-name {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-brand-red);
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-2xl);
}

.nav-link {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  font-weight: 400;
  color: var(--color-ink);
  position: relative;
  padding: var(--space-xs) 0;
  transition: color var(--duration-fast) var(--ease-standard);
  letter-spacing: 0.03em;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--color-warm-gold);
  transform: scaleX(0);
  transition: transform var(--duration-normal) var(--ease-standard);
  transform-origin: right center;
}

.nav-link:hover {
  color: var(--color-brand-red);
}

.nav-link:hover::after {
  transform: scaleX(1);
  transform-origin: left center;
}

/* 移动端汉堡菜单 */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-ink);
  border-radius: 1px;
  transition: transform var(--duration-normal) var(--ease-standard),
              opacity var(--duration-normal) var(--ease-standard);
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  margin-top: var(--nav-height);
  position: relative;
  min-height: 520px;
  display: flex;
  align-items: center;
  overflow: hidden;
  background: linear-gradient(
    135deg,
    var(--color-brand-red) 0%,
    var(--color-deep-brown) 50%,
    var(--color-brand-red-dark) 100%
  );
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 600px;
  height: 600px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(196, 162, 101, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(196, 162, 101, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-3xl) var(--space-xl);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-3xl);
  align-items: center;
  position: relative;
  z-index: 1;
  width: 100%;
}

.hero-content {
  color: var(--color-white);
}

.hero-badge {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-warm-gold);
  border: 1px solid rgba(196, 162, 101, 0.4);
  padding: 4px 16px;
  border-radius: 20px;
  margin-bottom: var(--space-lg);
  letter-spacing: 0.06em;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: var(--space-md);
  letter-spacing: 0.04em;
  color: var(--color-white);
}

.hero-title .gold {
  color: var(--color-warm-gold);
}

.hero-desc {
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 300;
  opacity: 0.9;
  line-height: 1.8;
  margin-bottom: var(--space-2xl);
  max-width: 480px;
}

.hero-image-wrapper {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 40px rgba(0, 0, 0, 0.25);
  aspect-ratio: 4 / 3;
}

.hero-image {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-standard);
}

.hero-image-wrapper:hover .hero-image {
  transform: scale(1.03);
}

/* Hero 信息卡片 */
.hero-info-cards {
  display: flex;
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.hero-info-card {
  background: rgba(255, 255, 255, 0.12);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: var(--radius-md);
  padding: var(--space-md) var(--space-lg);
  color: var(--color-white);
  font-family: var(--font-sans);
  flex: 1;
}

.hero-info-card .label {
  font-size: 0.8rem;
  opacity: 0.7;
  margin-bottom: 2px;
  letter-spacing: 0.04em;
}

.hero-info-card .value {
  font-size: 0.95rem;
  font-weight: 500;
}

/* ============================================
   Store Info Section
   ============================================ */
.store-info-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.store-info-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  padding: var(--space-2xl);
  text-align: center;
  transition: transform var(--duration-normal) var(--ease-standard),
              box-shadow var(--duration-normal) var(--ease-standard);
  box-shadow: var(--shadow-card);
}

.store-info-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.store-info-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-lg);
  background: var(--color-brand-red);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 1.4rem;
}

.store-info-card h3 {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: var(--space-sm);
}

.store-info-card p {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-ink-light);
  line-height: 1.8;
}

/* ============================================
   Products Section
   ============================================ */
.products-section {
  background: var(--color-white);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-xl);
}

.product-card {
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: transform var(--duration-normal) var(--ease-standard),
              box-shadow var(--duration-normal) var(--ease-standard);
  box-shadow: var(--shadow-card);
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.product-card-image {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-standard);
}

.product-card:hover .product-card-image {
  transform: scale(1.03);
}

.product-card-body {
  padding: var(--space-lg);
}

.product-card-body h3 {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: var(--space-xs);
  letter-spacing: 0.03em;
}

.product-card-tag {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  color: var(--color-brand-red);
  background: rgba(232, 93, 26, 0.08);
  padding: 2px 10px;
  border-radius: 12px;
  margin-bottom: var(--space-sm);
  letter-spacing: 0.04em;
}

.product-card-desc {
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--color-ink-light);
  line-height: 1.6;
}

/* ============================================
   Gallery Section
   ============================================ */
.gallery-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  grid-template-rows: 240px 240px;
  gap: var(--space-md);
}

.gallery-item {
  position: relative;
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: pointer;
  box-shadow: var(--shadow-card);
  transition: transform var(--duration-normal) var(--ease-standard),
              box-shadow var(--duration-normal) var(--ease-standard);
}

.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--duration-slow) var(--ease-standard);
}

.gallery-item:hover img {
  transform: scale(1.03);
}

.gallery-item-main {
  grid-row: 1 / 3;
}

.gallery-item::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.4) 0%, transparent 50%);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-standard);
}

.gallery-item:hover::after {
  opacity: 1;
}

.gallery-caption {
  position: absolute;
  bottom: 16px;
  left: 16px;
  right: 16px;
  color: var(--color-white);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  z-index: 2;
  opacity: 0;
  transform: translateY(8px);
  transition: opacity var(--duration-normal) var(--ease-standard),
              transform var(--duration-normal) var(--ease-standard);
}

.gallery-item:hover .gallery-caption {
  opacity: 1;
  transform: translateY(0);
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2000;
  background: rgba(0, 0, 0, 0.92);
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.lightbox.active {
  display: flex;
}

.lightbox img {
  max-width: 90vw;
  max-height: 85vh;
  border-radius: var(--radius-md);
  box-shadow: 0 8px 60px rgba(0, 0, 0, 0.4);
}

.lightbox-close {
  position: absolute;
  top: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  background: rgba(255, 255, 255, 0.12);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  color: var(--color-white);
  font-size: 1.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--duration-fast) var(--ease-standard);
}

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

/* ============================================
   Contact & Map Section
   ============================================ */
.contact-section {
  background: var(--color-card-bg);
}

.contact-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(220px, 320px);
  gap: var(--space-2xl);
  align-items: center;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.contact-item {
  display: flex;
  gap: var(--space-md);
  align-items: flex-start;
}

.contact-icon {
  width: 48px;
  height: 48px;
  background: var(--color-brand-red);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-white);
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-text h4 {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--color-ink);
  margin-bottom: 2px;
}

.contact-text p {
  font-family: var(--font-sans);
  font-size: 0.95rem;
  color: var(--color-ink-light);
  line-height: 1.6;
}

.map-wrapper {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  height: 100%;
  min-height: 360px;
  background: var(--color-card-bg);
  border: 1px solid var(--color-card-border);
}

.map-placeholder {
  width: 100%;
  height: 100%;
  min-height: 360px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-md);
  background: linear-gradient(135deg, #f0e8d8 0%, #e8dcc8 100%);
  color: var(--color-ink-light);
  font-family: var(--font-sans);
}

.map-placeholder .map-icon {
  font-size: 3rem;
  opacity: 0.5;
}

.map-placeholder p {
  font-size: 0.9rem;
  opacity: 0.7;
}

.map-link {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 0.9rem;
  color: var(--color-brand-red);
  border: 1px solid var(--color-brand-red);
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease-standard);
  cursor: pointer;
}

.map-link:hover {
  background: var(--color-brand-red);
  color: var(--color-white);
}

/* QR Code */
.qr-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  justify-self: end;
  gap: var(--space-md);
}

.qr-image {
  width: 180px;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}

.qr-hint {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  color: var(--color-ink-light);
  text-align: center;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--color-deep-brown);
  color: rgba(255, 255, 255, 0.7);
  padding: var(--space-2xl) 0;
  text-align: center;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.footer-brand {
  font-family: var(--font-serif);
  font-size: 1.3rem;
  font-weight: 600;
  color: var(--color-warm-gold);
  margin-bottom: var(--space-sm);
  letter-spacing: 0.06em;
}

.footer-divider {
  width: 40px;
  height: 2px;
  background: var(--color-warm-gold);
  margin: 0 auto var(--space-md);
  opacity: 0.5;
}

.footer p {
  font-family: var(--font-sans);
  font-size: 0.85rem;
  line-height: 1.8;
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: var(--space-2xl);
  }

  .hero-image-wrapper {
    max-width: 500px;
    margin: 0 auto;
  }

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

  .gallery-grid {
    grid-template-columns: 1fr 1fr;
    grid-template-rows: 240px 240px 240px;
  }

  .gallery-item-main {
    grid-row: 1 / 2;
    grid-column: 1 / 3;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .qr-wrapper {
    justify-self: center;
  }
}

@media (max-width: 768px) {
  :root {
    --space-section: 60px;
    --nav-height: 60px;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .hero {
    min-height: auto;
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-desc {
    font-size: 0.95rem;
  }

  .hero-info-cards {
    flex-direction: column;
  }

  .store-info-grid {
    grid-template-columns: 1fr;
  }

  .products-grid {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .gallery-grid {
    grid-template-columns: 1fr;
    grid-template-rows: 220px 220px 220px 220px 220px;
  }

  .gallery-item-main {
    grid-row: 1 / 2;
    grid-column: 1;
  }

  /* 导航移动端适配 */
  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: rgba(253, 248, 240, 0.98);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    flex-direction: column;
    gap: 0;
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--color-card-border);
    box-shadow: var(--shadow-nav);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--duration-normal) var(--ease-standard),
                opacity var(--duration-normal) var(--ease-standard);
  }

  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-link {
    display: block;
    padding: var(--space-md) var(--space-xl);
    text-align: center;
    border-bottom: 1px solid rgba(0, 0, 0, 0.04);
  }

  .nav-link::after {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }
}

@media (max-width: 480px) {
  :root {
    --space-section: 48px;
  }

  .section-inner {
    padding: 0 var(--space-md);
  }

  .hero-title {
    font-size: 1.7rem;
  }

  .hero-inner {
    padding: var(--space-2xl) var(--space-md);
  }
}