/* =========================================
   YIWUYIMEI Scent - Modern Minimalist Theme
   ========================================= */

/* CSS Variables */
:root {
  --color-primary: #1a1a1a;
  --color-secondary: #666;
  --color-accent: #c9a87c;
  --color-light: #f8f6f3;
  --color-white: #ffffff;
  --color-border: #e5e5e5;
  
  --font-serif: 'Playfair Display', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --shadow-sm: 0 1px 2px rgba(0,0,0,0.04);
  --shadow-md: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
  
  --container-max: 1280px;
  --header-height: 80px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--color-primary);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 24px;
}

@media (min-width: 768px) {
  .container {
    padding: 0 48px;
  }
}

/* =========================================
   Header
   ========================================= */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--header-height);
  background: transparent;
  transition: var(--transition);
}

.header.is-scrolled {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  box-shadow: var(--shadow-sm);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

/* Logo */
.logo {
  display: flex;
  align-items: baseline;
  gap: 4px;
}

.logo__text {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  color: var(--color-primary);
}

.logo__tagline {
  font-size: 0.875rem;
  color: var(--color-accent);
  font-weight: 300;
}

/* Navigation Menu */
.nav__menu {
  display: flex;
  align-items: center;
  gap: 40px;
}

.nav__link {
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--color-primary);
  position: relative;
  padding: 8px 0;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-accent);
  transition: var(--transition);
}

.nav__link:hover::after {
  width: 100%;
}

/* Mobile Navigation */
.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-primary);
  transition: var(--transition);
}

@media (max-width: 768px) {
  .nav__toggle {
    display: flex;
  }
  
  .nav__menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: 24px;
    gap: 0;
    box-shadow: var(--shadow-md);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
  }
  
  .nav__menu.is-active {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }
  
  .nav__item {
    width: 100%;
    border-bottom: 1px solid var(--color-border);
  }
  
  .nav__link {
    display: block;
    padding: 16px 0;
  }
}

/* =========================================
   Hero Section
   ========================================= */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  background: var(--color-light);
}

.hero__bg {
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(201, 168, 124, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 20%, rgba(201, 168, 124, 0.1) 0%, transparent 40%),
    linear-gradient(180deg, #f8f6f3 0%, #f0ece6 100%);
}

.hero__gradient {
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg viewBox='0 0 400 400' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
  opacity: 0.03;
}

.hero__content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 800px;
  padding: 0 24px;
  animation: fadeInUp 1s ease-out;
}

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

.hero__title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 6vw, 4.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 16px;
  color: var(--color-primary);
}

.hero__subtitle {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  color: var(--color-accent);
  font-weight: 500;
  margin-bottom: 24px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero__desc {
  font-size: 1.125rem;
  color: var(--color-secondary);
  margin-bottom: 40px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
  line-height: 1.8;
}

.hero__scroll {
  position: absolute;
  bottom: 40px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  color: var(--color-secondary);
  font-size: 0.875rem;
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateX(-50%) translateY(0);
  }
  40% {
    transform: translateX(-50%) translateY(-10px);
  }
  60% {
    transform: translateX(-50%) translateY(-5px);
  }
}

.scroll-indicator {
  width: 24px;
  height: 40px;
  border: 2px solid var(--color-secondary);
  border-radius: 12px;
  position: relative;
}

.scroll-indicator::before {
  content: '';
  position: absolute;
  top: 8px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 8px;
  background: var(--color-secondary);
  border-radius: 2px;
  animation: scroll 1.5s infinite;
}

@keyframes scroll {
  0% {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
  }
  100% {
    opacity: 0;
    transform: translateX(-50%) translateY(12px);
  }
}

/* =========================================
   Buttons
   ========================================= */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 40px;
  font-size: 0.9375rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition);
  border: none;
}

.btn--primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn--primary:hover {
  background: #333;
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn--outline {
  background: transparent;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn--outline:hover {
  background: var(--color-primary);
  color: var(--color-white);
}

.btn--light {
  background: var(--color-white);
  color: var(--color-primary);
}

.btn--light:hover {
  background: var(--color-light);
  transform: translateY(-2px);
}

/* =========================================
   Section Styles
   ========================================= */
.section {
  padding: 120px 0;
}

.section--alt {
  background: var(--color-light);
}

.section--dark {
  background: var(--color-primary);
  color: var(--color-white);
}

.section__header {
  text-align: center;
  margin-bottom: 64px;
}

.section__title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  margin-bottom: 16px;
  color: var(--color-primary);
}

.section--dark .section__title {
  color: var(--color-white);
}

.section__subtitle {
  font-size: 1.125rem;
  color: var(--color-secondary);
}

.section--dark .section__subtitle {
  color: rgba(255, 255, 255, 0.7);
}

/* =========================================
   Features Section
   ========================================= */
.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
}

.feature-card {
  text-align: center;
  padding: 48px 32px;
  background: var(--color-white);
  border-radius: 8px;
  transition: var(--transition);
}

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

.feature-card__icon {
  font-size: 3rem;
  margin-bottom: 24px;
}

.feature-card__title {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: 16px;
  color: var(--color-primary);
}

.feature-card__desc {
  color: var(--color-secondary);
  line-height: 1.8;
}

/* =========================================
   Products Preview
   ========================================= */
.products__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 32px;
}

.product-category {
  background: var(--color-white);
  border-radius: 12px;
  overflow: hidden;
  transition: var(--transition);
}

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

.product-category__image {
  aspect-ratio: 4/3;
  overflow: hidden;
  background: var(--color-light);
}

.product-category__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.product-category:hover .product-category__image img {
  transform: scale(1.05);
}

.image-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 4rem;
}

.product-category__content {
  padding: 32px;
}

.product-category__content h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin-bottom: 12px;
  color: var(--color-primary);
}

.product-category__content p {
  color: var(--color-secondary);
  margin-bottom: 24px;
  line-height: 1.7;
}

/* =========================================
   Product Categories List (Compact)
   ========================================= */
.section--compact {
  padding: 60px 0;
}

.content--compact {
  max-width: 800px;
  margin: 0 auto 40px;
}

.content--compact h2 {
  font-family: var(--font-serif);
  font-size: 1.75rem;
  margin: 32px 0 16px;
  color: var(--color-primary);
}

.content--compact h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  margin: 24px 0 12px;
  color: var(--color-primary);
}

.content--compact ul {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 8px 24px;
  list-style: none;
  padding: 0;
  margin: 16px 0;
}

.content--compact li {
  position: relative;
  padding-left: 20px;
  color: var(--color-secondary);
}

.content--compact li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-accent);
}

/* Product Categories Grid */
.product-categories {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.product-category-card {
  display: flex;
  flex-direction: column;
  background: var(--color-white);
  border-radius: 12px;
  overflow: hidden;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
}

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

.product-category-card__image {
  aspect-ratio: 16/10;
  overflow: hidden;
  background: var(--color-light);
}

.product-category-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.product-category-card:hover .product-category-card__image img {
  transform: scale(1.05);
}

.product-category-card__content {
  padding: 24px;
  flex: 1;
  display: flex;
  flex-direction: column;
}

.product-category-card__content h3 {
  font-family: var(--font-serif);
  font-size: 1.25rem;
  margin-bottom: 8px;
  color: var(--color-primary);
}

.product-category-card__content p {
  color: var(--color-secondary);
  font-size: 0.9375rem;
  line-height: 1.6;
  margin-bottom: 16px;
  flex: 1;
}

.btn--sm {
  padding: 10px 20px;
  font-size: 0.875rem;
  align-self: flex-start;
}

/* =========================================
   Gallery Preview Section
   ========================================= */
.gallery-preview {
  background: var(--color-white);
}

.gallery__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.gallery__item {
  position: relative;
  aspect-ratio: 1;
  border-radius: 12px;
  overflow: hidden;
  cursor: pointer;
}

.gallery__item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.gallery__item:hover img {
  transform: scale(1.1);
}

.gallery__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  padding: 24px;
  opacity: 0;
  transition: var(--transition);
}

.gallery__item:hover .gallery__overlay {
  opacity: 1;
}

.gallery__overlay span {
  color: var(--color-white);
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
}

@media (max-width: 968px) {
  .gallery__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .gallery__grid {
    grid-template-columns: 1fr;
  }
}

/* =========================================
   About Preview
   ========================================= */
.about-preview__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.about-preview__text {
  font-size: 1.125rem;
  color: var(--color-secondary);
  margin-bottom: 24px;
  line-height: 1.9;
}

.about-preview__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.stat-item {
  text-align: center;
  padding: 32px;
  background: var(--color-light);
  border-radius: 12px;
}

.stat-item__number {
  display: block;
  font-family: var(--font-serif);
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-accent);
  margin-bottom: 8px;
}

.stat-item__label {
  font-size: 0.9375rem;
  color: var(--color-secondary);
}

@media (max-width: 968px) {
  .about-preview__grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  
  .about-preview__stats {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 640px) {
  .about-preview__stats {
    grid-template-columns: 1fr;
  }
}

/* =========================================
   CTA Section
   ========================================= */
.cta {
  text-align: center;
}

.cta__title {
  font-family: var(--font-serif);
  font-size: clamp(2rem, 4vw, 3rem);
  margin-bottom: 16px;
}

.cta__desc {
  font-size: 1.25rem;
  color: rgba(255, 255, 255, 0.8);
  margin-bottom: 40px;
}

/* =========================================
   Footer
   ========================================= */
.footer {
  background: var(--color-primary);
  color: var(--color-white);
  padding: 80px 0 32px;
}

.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 64px;
  margin-bottom: 64px;
}

.footer__brand .logo__text {
  color: var(--color-white);
}

.footer__desc {
  margin-top: 24px;
  color: rgba(255, 255, 255, 0.7);
  line-height: 1.8;
  max-width: 320px;
}

.footer__links h4,
.footer__contact h4 {
  font-family: var(--font-serif);
  font-size: 1.125rem;
  margin-bottom: 24px;
  color: var(--color-white);
}

.footer__links ul,
.footer__contact ul {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer__links a,
.footer__contact li {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.9375rem;
  transition: var(--transition);
}

.footer__links a:hover {
  color: var(--color-accent);
}

.footer__bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  color: rgba(255, 255, 255, 0.5);
  font-size: 0.875rem;
}

@media (max-width: 968px) {
  .footer__grid {
    grid-template-columns: 1fr 1fr;
    gap: 48px;
  }
  
  .footer__brand {
    grid-column: 1 / -1;
  }
}

@media (max-width: 640px) {
  .footer__grid {
    grid-template-columns: 1fr;
  }
}

/* =========================================
   Product Browser
   ========================================= */
.product-browser {
  margin-top: 48px;
  padding-top: 48px;
  border-top: 1px solid var(--color-border);
}

.product-browser__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 16px;
}

.product-thumb {
  background: var(--color-white);
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

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

.product-thumb__image {
  aspect-ratio: 1;
  overflow: hidden;
  background: var(--color-light);
}

.product-thumb__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.product-thumb:hover .product-thumb__image img {
  transform: scale(1.05);
}

.product-thumb__label {
  display: block;
  padding: 12px;
  text-align: center;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-primary);
  font-family: var(--font-sans);
}

@media (max-width: 640px) {
  .product-browser__grid {
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 12px;
  }
  
  .product-thumb__label {
    padding: 8px;
    font-size: 0.8125rem;
  }
}

/* =========================================
   Product Gallery (for product pages)
   ========================================= */
.product-images {
  margin-bottom: 64px;
}

.product-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.product-gallery-section {
  margin-top: 64px;
  padding-top: 64px;
  border-top: 1px solid var(--color-border);
}

.product-gallery-section .section__subtitle {
  text-align: center;
  margin-bottom: 48px;
}

.gallery-item {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  background: var(--color-light);
  aspect-ratio: 1;
  cursor: pointer;
}

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

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  padding: 24px;
  opacity: 0;
  transition: var(--transition);
}

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

.gallery-title {
  color: var(--color-white);
  font-family: var(--font-serif);
  font-size: 1.125rem;
  font-weight: 600;
}

.gallery-loading {
  text-align: center;
  padding: 48px;
  color: var(--color-secondary);
}

.gallery-empty {
  text-align: center;
  padding: 48px;
  color: var(--color-secondary);
  font-style: italic;
}

/* Legacy product item styles */
.product-item {
  position: relative;
  border-radius: 12px;
  overflow: hidden;
  background: var(--color-light);
  aspect-ratio: 1;
}

.product-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.product-item:hover img {
  transform: scale(1.05);
}

.product-item__overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 60%);
  display: flex;
  align-items: flex-end;
  padding: 24px;
  opacity: 0;
  transition: var(--transition);
}

.product-item:hover .product-item__overlay {
  opacity: 1;
}

.product-item__title {
  color: var(--color-white);
  font-family: var(--font-serif);
  font-size: 1.125rem;
}

/* =========================================
   Page Header
   ========================================= */
.page-header {
  padding: 160px 0 80px;
  background: var(--color-light);
  text-align: center;
}

.page-header__title {
  font-family: var(--font-serif);
  font-size: clamp(2.5rem, 5vw, 4rem);
  margin-bottom: 16px;
}

.page-header__desc {
  font-size: 1.25rem;
  color: var(--color-secondary);
  max-width: 600px;
  margin: 0 auto;
}

/* =========================================
   Content Styles
   ========================================= */
.content {
  max-width: 800px;
  margin: 0 auto;
}

.content h2 {
  font-family: var(--font-serif);
  font-size: 2rem;
  margin: 48px 0 24px;
  color: var(--color-primary);
}

.content h3 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  margin: 32px 0 16px;
  color: var(--color-primary);
}

.content p {
  color: var(--color-secondary);
  margin-bottom: 16px;
  line-height: 1.8;
}

.content ul {
  list-style: disc;
  padding-left: 24px;
  margin-bottom: 24px;
}

.content li {
  color: var(--color-secondary);
  margin-bottom: 8px;
  line-height: 1.7;
}

.content strong {
  color: var(--color-primary);
  font-weight: 600;
}