/* Main Stylesheet */

/* ========== Reset & Base Styles ========== */

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  overflow-x: hidden;
}

body {
  font-family: var(--font-chinese-body);
  font-size: var(--font-size-body);
  line-height: var(--line-height-normal);
  color: var(--text-primary);
  background-color: var(--bg-primary);
  overflow-x: hidden;
}

/* Prevent scrolling during transitions */
body.scrolling {
  overflow: hidden;
}

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

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

ul, ol {
  list-style: none;
}

/* ========== Typography ========== */

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-chinese-title);
  font-weight: var(--font-weight-semibold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-md);
}

h1 { font-size: var(--font-size-h1); }
h2 { font-size: var(--font-size-h2); }
h3 { font-size: var(--font-size-h3); }
h4 { font-size: var(--font-size-h4); }
h5 { font-size: var(--font-size-h5); }

p {
  margin-bottom: var(--spacing-sm);
}

/* ========== Layout ========== */

.container {
  max-width: var(--container-max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  position: relative;
  width: 100%;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.section.fullscreen {
  height: 100vh;
  overflow: hidden;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
  color: var(--primary-color);
}

/* ========== Top Navigation ========== */

.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  display: none; /* Hidden by default */
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--spacing-lg);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: var(--z-fixed);
  box-shadow: var(--shadow-sm);
}

.top-nav .logo img {
  height: 40px;
  width: auto;
}

.language-toggle {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  padding: var(--spacing-xs) var(--spacing-sm);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  background: var(--bg-primary);
  transition: all var(--transition-fast);
}

.language-toggle:hover {
  border-color: var(--secondary-color);
  background: var(--bg-secondary);
}

.language-toggle span {
  font-size: var(--font-size-small);
  font-weight: var(--font-weight-medium);
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}

.language-toggle span.active {
  color: var(--secondary-color);
}

/* ========== Side Navigation Dots ========== */

.side-nav {
  position: fixed;
  right: var(--spacing-lg);
  top: 50%;
  transform: translateY(-50%);
  z-index: var(--z-fixed);
}

.nav-dots {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.nav-dot {
  width: var(--nav-dot-size);
  height: var(--nav-dot-size);
  border-radius: var(--radius-full);
  background: var(--border-color);
  border: 2px solid transparent;
  transition: all var(--transition-normal);
  cursor: pointer;
}

.nav-dot:hover {
  background: var(--secondary-color);
  transform: scale(1.2);
}

.nav-dot.active {
  background: var(--secondary-color);
  border-color: var(--secondary-color);
  box-shadow: 0 0 0 4px rgba(201, 160, 99, 0.2);
}

/* ========== Section 1: Brand Story Carousel ========== */

#brand-story {
  padding: 0;
}

.carousel {
  position: relative;
  width: 100%;
  height: 100vh;
  overflow: hidden;
}

.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-carousel), visibility var(--transition-carousel);
}

.carousel-slide.active {
  opacity: 1;
  visibility: visible;
  z-index: var(--z-base);
}

.slide-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.slide-bg::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: var(--bg-overlay);
}

.slide-content {
  position: relative;
  z-index: var(--z-dropdown);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  color: var(--text-light);
  padding: var(--spacing-2xl);
}

.main-title {
  font-size: 4rem;
  font-weight: 600;
  margin-bottom: var(--spacing-lg);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
  font-family: 'Cormorant Garamond','Bodoni Moda',  serif;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  line-height: 1.3;
  font-style: normal;
}

.subtitle {
  font-size: var(--font-size-h3);
  font-weight: var(--font-weight-light);
  margin-bottom: var(--spacing-md);
  color: var(--secondary-color);
}

.description {
  font-size: var(--font-size-h5);
  font-weight: var(--font-weight-light);
  opacity: 0.9;
}

.slide-title {
  font-size: var(--font-size-h2);
  margin-bottom: var(--spacing-xl);
}

/* Heritage Info */
.heritage-info {
  display: flex;
  gap: var(--spacing-2xl);
  margin-top: var(--spacing-xl);
}

.info-item h3 {
  font-size: var(--font-size-h5);
  margin-bottom: var(--spacing-sm);
  color: var(--secondary-color);
}

.info-item p {
  font-size: var(--font-size-body);
}

/* Culture Features */
.culture-features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.feature-item {
  font-size: var(--font-size-h5);
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  backdrop-filter: blur(5px);
}

/* Philosophy */
.philosophy-text {
  font-size: var(--font-size-h4);
  font-weight: var(--font-weight-light);
  max-width: 600px;
  margin-top: var(--spacing-xl);
  line-height: var(--line-height-loose);
}

/* Audience List */
.audience-list {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
  max-width: 800px;
}

.audience-list li {
  font-size: var(--font-size-h5);
  padding: var(--spacing-md);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  backdrop-filter: blur(5px);
}

/* Carousel Controls */
.carousel-controls {
  position: absolute;
  bottom: var(--spacing-2xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--spacing-lg);
  z-index: var(--z-dropdown);
}

.carousel-btn {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  color: var(--text-light);
  font-size: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.carousel-btn:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}

/* Carousel Indicators */
.carousel-indicators {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  gap: var(--spacing-sm);
  z-index: var(--z-dropdown);
}

.carousel-indicators .dot {
  width: 12px;
  height: 12px;
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.5);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.carousel-indicators .dot:hover {
  background: rgba(255, 255, 255, 0.8);
  transform: scale(1.2);
}

.carousel-indicators .dot.active {
  background: var(--secondary-color);
  width: 32px;
}

/* ========== Section 2: Product Value ========== */

#product-value {
  background: var(--bg-secondary);
}

.value-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
}

.value-text h3 {
  font-size: var(--font-size-h3);
  margin-bottom: var(--spacing-lg);
  color: var(--primary-color);
}

.value-text p {
  font-size: var(--font-size-h5);
  margin-bottom: var(--spacing-md);
  color: var(--text-secondary);
}

.materials-preview {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-sm);
}

.material-item {
  text-align: center;
}

.material-item img {
  width: 100%;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}

/* ========== Section 3: Materials Detail ========== */

#materials {
  background: var(--bg-primary);
}

.materials-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: var(--spacing-md);
}

.material-card {
  background: var(--bg-secondary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  text-align: center;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.material-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
}

.material-card img {
  width: 100%;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-md);
}

.material-card h3 {
  font-size: var(--font-size-h5);
  margin-bottom: var(--spacing-sm);
  color: var(--primary-color);
}

.material-card p {
  font-size: 13px;
  color: var(--text-secondary);
  line-height: var(--line-height-normal);
}

/* ========== Section 4: Products ========== */

#products {
  background: var(--bg-secondary);
  min-height: 100vh;
  height: 100vh;
  overflow: hidden;
  padding: 0;
  display: flex;
  flex-direction: column;
}

#products .container {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding-top: var(--spacing-xl);
  padding-bottom: var(--spacing-xl);
  scroll-behavior: smooth;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.product-card {
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  padding: var(--spacing-md);
  text-align: center;
  transition: transform var(--transition-normal), box-shadow var(--transition-normal);
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
}

.product-card img {
  width: 100%;
  max-width: 200px;
  margin: 0 auto var(--spacing-sm);
  border-radius: var(--radius-md);
}

.product-card h3 {
  font-size: var(--font-size-body);
  margin-bottom: 4px;
  color: var(--primary-color);
}

.product-card h4 {
  font-size: 12px;
  font-family: var(--font-english-body);
  font-weight: var(--font-weight-normal);
  margin-bottom: var(--spacing-xs);
  color: var(--text-secondary);
}

.product-card .tag {
  display: inline-block;
  padding: 4px var(--spacing-xs);
  background: var(--secondary-color);
  color: var(--text-light);
  border-radius: var(--radius-full);
  font-size: 11px;
  margin-bottom: var(--spacing-xs);
}

.product-card .feature {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xs);
  font-style: italic;
  line-height: 1.4;
}

.toggle-scenarios {
  padding: 6px var(--spacing-sm);
  background: var(--primary-color);
  color: var(--text-light);
  border-radius: var(--radius-md);
  font-size: 11px;
  transition: background var(--transition-fast);
  margin-bottom: var(--spacing-xs);
}

.toggle-scenarios:hover {
  background: var(--accent-color);
}

.scenarios {
  text-align: left;
  padding: var(--spacing-xs);
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  margin-top: var(--spacing-xs);
  max-height: 200px;
  overflow: hidden;
  transition: max-height var(--transition-normal), opacity var(--transition-normal);
}

.scenarios.hidden {
  max-height: 0;
  opacity: 0;
  padding: 0;
  margin: 0;
}

.scenarios h5 {
  font-size: 12px;
  margin-bottom: 4px;
  color: var(--primary-color);
}

.scenarios ul {
  list-style: disc;
  padding-left: var(--spacing-sm);
}

.scenarios li {
  font-size: 11px;
  color: var(--text-secondary);
  margin-bottom: 2px;
  line-height: 1.3;
}

/* Disclaimer */
.disclaimer {
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  margin-top: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
  font-style: italic;
}

/* ========== Section 5: Contact ========== */

#contact {
  background: var(--bg-dark);
  color: var(--text-light);
}

#contact .section-title {
  color: var(--text-light);
}

.contact-content {
  display: flex;
  gap: var(--spacing-3xl);
  justify-content: center;
}

.contact-item {
  text-align: center;
}

.contact-item .icon-circle {
  width: 80px;
  height: 80px;
  margin: 0 auto var(--spacing-md);
  background: linear-gradient(135deg, var(--secondary-color) 0%, #D4AF6A 100%);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 15px rgba(201, 160, 99, 0.3);
}

.contact-item .icon-circle:hover {
  transform: translateY(-5px) scale(1.05);
  box-shadow: 0 8px 25px rgba(201, 160, 99, 0.5);
}

.contact-item .icon-circle i {
  font-size: 2rem;
  color: var(--text-light);
}

.contact-item h3 {
  font-size: var(--font-size-h4);
  margin-bottom: var(--spacing-sm);
  color: var(--secondary-color);
}

.contact-item p {
  font-size: var(--font-size-body);
  color: var(--text-light);
}

.contact-item p a {
  color: var(--text-light);
  text-decoration: none;
  transition: color var(--transition-fast);
  border-bottom: 1px solid transparent;
}

.contact-item p a:hover {
  color: var(--secondary-color);
  border-bottom-color: var(--secondary-color);
}

.contact-item p a:hover {
  color: var(--secondary-color);
  text-decoration: underline;
}

/* ========== Footer ========== */

.site-footer {
  padding: var(--spacing-lg);
  text-align: center;
  background: var(--bg-dark);
  color: var(--text-muted);
  font-size: var(--font-size-small);
}

/* ========== Lazy Loading ========== */

img[data-src] {
  opacity: 0;
  transition: opacity var(--transition-normal);
}

img[data-src].loaded {
  opacity: 1;
}

/* ========== Utility Classes ========== */

.hidden {
  display: none !important;
}

.text-center {
  text-align: center;
}

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

/* ========== Gift Box Section ========== */

.giftbox-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-3xl);
  align-items: center;
  margin-top: var(--spacing-3xl);
  padding: var(--spacing-2xl);
  background: var(--bg-primary);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
}

.giftbox-image {
  display: flex;
  align-items: center;
  justify-content: center;
}

.giftbox-image img {
  width: 100%;
  max-width: 500px;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-normal);
}

.giftbox-image img:hover {
  transform: scale(1.05);
}

.giftbox-content {
  padding: var(--spacing-lg);
}

.giftbox-content h3 {
  font-size: var(--font-size-h3);
  color: var(--primary-color);
  margin-bottom: var(--spacing-xs);
}

.giftbox-content h4 {
  font-size: var(--font-size-h5);
  font-family: var(--font-english-body);
  font-weight: var(--font-weight-normal);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
}

.giftbox-description {
  font-size: var(--font-size-body);
  color: var(--text-secondary);
  line-height: var(--line-height-loose);
  margin-bottom: var(--spacing-lg);
}

.giftbox-features {
  list-style: none;
  padding: 0;
}

.giftbox-features li {
  font-size: var(--font-size-body);
  color: var(--text-primary);
  padding: var(--spacing-sm) 0;
  padding-left: var(--spacing-lg);
  position: relative;
  line-height: var(--line-height-normal);
}

.giftbox-features li::before {
  content: '✦';
  position: absolute;
  left: 0;
  color: var(--secondary-color);
  font-size: 1.2em;
}

/* ========== Consultation Section ========== */

.consultation-section {
  margin-top: var(--spacing-3xl);
  padding: var(--spacing-3xl) var(--spacing-2xl);
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-color) 100%);
  border-radius: var(--radius-lg);
  text-align: center;
  box-shadow: var(--shadow-xl);
}

.consultation-content h3 {
  font-size: var(--font-size-h2);
  color: var(--text-light);
  margin-bottom: var(--spacing-md);
  text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.2);
}

.consultation-content p {
  font-size: var(--font-size-h5);
  color: rgba(255, 255, 255, 0.95);
  margin-bottom: var(--spacing-xl);
}

.consultation-btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-2xl);
  background: var(--text-light);
  color: var(--primary-color);
  font-size: var(--font-size-h5);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-full);
  transition: all var(--transition-normal);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.consultation-btn:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.3);
  background: var(--secondary-color);
  color: var(--text-light);
}

.consultation-btn span {
  display: inline-block;
}