/* ==========================================================================
   #Global Reset & Variables
   ========================================================================== */
:root {
  /* Typography */
  --font-primary: 'Helvetica Neue', 'Helvetica', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', Arial, sans-serif;
  --font-serif: 'Georgia', 'Songti SC', 'SimSun', serif;
  
  /* Colors - Minimalist Palette */
  --color-bg: #ffffff;
  --color-text-primary: #1a1a1a;
  --color-text-secondary: #666666;
  --color-text-muted: #999999;
  --color-accent: #9d8168; /* 燕麦色/陶土色强调 */
  --color-border: rgba(0, 0, 0, 0.05);
  --color-overlay: rgba(0, 0, 0, 0.3);
  --color-placeholder: #f5f5f5;

  /* Spacing & Layout */
  --header-height: 80px;
  --container-width: 1440px;
  --spacing-sm: 8px;
  --spacing-md: 24px;
  --spacing-lg: 48px;
  --spacing-xl: 120px;

  /* Transitions */
  --transition-fast: 0.3s ease;
  --transition-medium: 0.5s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --transition-slow: 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  outline: none;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-primary);
  background-color: var(--color-bg);
  color: var(--color-text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  opacity: 0;
  animation: pageFadeIn 1s ease forwards;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
  background-color: var(--color-placeholder); /* Load placeholder */
  object-fit: cover;
}

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

/* ==========================================================================
   #Typography
   ========================================================================== */
h1, h2, h3, h4, h5, h6 {
  font-weight: 400;
  line-height: 1.2;
  letter-spacing: 0.02em;
}

.text-serif {
  font-family: var(--font-serif);
}

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

/* ==========================================================================
   #Components: Navigation
   ========================================================================== */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 40px;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  z-index: 1000;
  border-bottom: 1px solid var(--color-border);
  transition: transform var(--transition-medium);
}

.nav-logo {
  font-size: 24px;
  font-weight: 300;
  letter-spacing: 0.1em;
  display: flex;
  align-items: center;
}

.nav-links {
  display: flex;
  gap: 40px;
}

.nav-link {
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--color-text-primary);
  position: relative;
  opacity: 0.6;
  padding-bottom: 4px;
}

.nav-link:hover, .nav-link.active {
  opacity: 1;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-text-primary);
  transition: width var(--transition-fast);
}

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

/* Mobile Menu Toggle (Hidden by default on desktop) */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 5px;
}
.mobile-menu-btn span {
  display: block;
  width: 24px;
  height: 1px;
  background-color: var(--color-text-primary);
}

/* ==========================================================================
   #Page: Home (Index)
   ========================================================================== */
.hero-section {
  height: 100vh;
  width: 100%;
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  transform: scale(1.05); /* Prevent parallax whitespace */
}

.hero-bg img, .hero-bg video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.9);
}

.hero-content {
  z-index: 10;
  text-align: center;
  color: #ffffff;
  mix-blend-mode: difference;
}

.hero-slogan {
  font-size: clamp(2rem, 5vw, 4rem);
  font-weight: 300;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  opacity: 0;
  transform: translateY(30px);
  animation: fadeInUp 1.2s var(--transition-slow) 0.5s forwards;
}

/* Collections Preview */
.section-preview {
  padding: 0;
  min-height: 80vh;
}

.preview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  height: 100vh; /* Full viewport height for immersive grid */
  width: 100%;
}

.preview-card {
  position: relative;
  overflow: hidden;
  height: 100%;
  cursor: pointer;
}

.preview-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 1.2s var(--transition-slow);
}

.preview-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.2);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-medium);
}

.preview-title {
  color: #fff;
  font-size: 1.8rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  transform: translateY(20px);
  transition: transform var(--transition-medium);
}

.preview-card:hover img {
  transform: scale(1.1);
}

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

.preview-card:hover .preview-title {
  transform: translateY(0);
}

/* Quote Section */
.section-quote {
  padding: var(--spacing-xl) 20px;
  background-color: #fafafa;
  display: flex;
  justify-content: center;
  align-items: center;
}

.dynamic-quote {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  color: var(--color-text-secondary);
  font-style: italic;
  max-width: 700px;
  text-align: center;
  line-height: 1.8;
  position: relative;
  opacity: 0;
  animation: fadeQuote 1s ease forwards;
}

/* ==========================================================================
   #Page: Gallery
   ========================================================================== */
.gallery-container {
  max-width: 1600px;
  margin: 0 auto;
  padding-bottom: var(--spacing-xl);
}

.filter-bar {
  display: flex;
  justify-content: center;
  gap: 40px;
  padding: 140px 0 60px; /* Top padding clears fixed navbar */
}

.filter-item {
  cursor: pointer;
  font-size: 14px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.filter-item.active, .filter-item:hover {
  color: var(--color-text-primary);
}

/* Masonry Layout */
.gallery-grid {
  column-count: 3;
  column-gap: 20px;
  padding: 0 40px;
}

.gallery-item {
  break-inside: avoid;
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
  cursor: zoom-in;
}

.gallery-item img {
  width: 100%;
  display: block;
  transition: transform var(--transition-medium);
}

.gallery-item-mask {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to top, rgba(0,0,0,0.7) 0%, transparent 40%);
  opacity: 0;
  transition: opacity var(--transition-medium);
  display: flex;
  align-items: flex-end;
  padding: 20px;
}

.gallery-caption {
  color: #fff;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  transform: translateY(10px);
  transition: transform var(--transition-medium);
}

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

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

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

/* Lightbox */
.lightbox {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255, 255, 255, 0.98);
  z-index: 2000;
  display: none; /* Toggled by JS */
  opacity: 0;
  transition: opacity var(--transition-fast);
}

.lightbox.active {
  display: flex;
  justify-content: center;
  align-items: center;
  opacity: 1;
}

.lightbox-content-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 90vw;
  max-height: 90vh;
}

.lightbox-img {
  max-height: 75vh;
  object-fit: contain;
  box-shadow: 0 20px 50px rgba(0,0,0,0.1);
}

.lightbox-text {
  margin-top: 24px;
  text-align: center;
  font-family: var(--font-primary);
  color: var(--color-text-secondary);
  max-width: 600px;
  font-size: 0.95rem;
  line-height: 1.6;
}

.lightbox-close {
  position: absolute;
  top: 30px;
  right: 40px;
  font-size: 40px;
  font-weight: 100;
  cursor: pointer;
  line-height: 1;
  color: var(--color-text-primary);
  transition: transform var(--transition-fast);
}

.lightbox-close:hover {
  transform: rotate(90deg);
}

/* ==========================================================================
   #Page: Narrative
   ========================================================================== */
.narrative-hero {
  height: 80vh;
  position: relative;
  display: flex;
  align-items: flex-end;
  padding: 60px 40px;
}

.narrative-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -1;
  filter: brightness(0.85);
}

.narrative-title-wrap {
  position: relative;
  z-index: 10;
  color: #fff;
  max-width: 900px;
  animation: fadeInUp 1s var(--transition-slow) forwards;
}

.narrative-main-title {
  font-size: clamp(2.5rem, 4vw, 5rem);
  font-weight: 300;
  line-height: 1.1;
  margin-bottom: 20px;
}

.narrative-subtitle {
  font-size: 1.1rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  opacity: 0.9;
}

.narrative-content {
  max-width: 800px;
  margin: 100px auto;
  padding: 0 40px;
  font-size: 1.125rem;
  color: #333;
}

.narrative-text {
  margin-bottom: 2rem;
  line-height: 1.8;
  text-align: justify;
}

.narrative-dropcap::first-letter {
  font-size: 3.5em;
  float: left;
  line-height: 0.8;
  margin-right: 0.15em;
  font-family: var(--font-serif);
}

.narrative-image-full {
  width: 100vw;
  position: relative;
  left: 50%;
  right: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
  height: 80vh;
  margin-top: 60px;
  margin-bottom: 60px;
}

.narrative-image-full img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.narrative-related {
  padding: 80px 40px;
  background: #f9f9f9;
  overflow-x: auto;
  white-space: nowrap;
  -webkit-overflow-scrolling: touch;
}

.related-title {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 30px;
  color: var(--color-text-muted);
}

.related-scroll {
  display: inline-flex;
  gap: 20px;
}

.related-card {
  width: 300px;
  height: 400px;
  flex-shrink: 0;
  cursor: pointer;
}

.related-card img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: opacity var(--transition-fast);
}

.related-card:hover img {
  opacity: 0.8;
}

/* ==========================================================================
   #Footer
   ========================================================================== */
.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 40px 0;
  text-align: center;
}

.copyright {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  letter-spacing: 0.1em;
}

/* ==========================================================================
   #Utilities & Animations
   ========================================================================== */
.hidden {
  display: none !important;
}

@keyframes pageFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(40px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeQuote {
  from { opacity: 0; transform: scale(0.98); }
  to { opacity: 1; transform: scale(1); }
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #fff;
}
::-webkit-scrollbar-thumb {
  background: #d1d1d1;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #999;
}

/* ==========================================================================
   #Responsive
   ========================================================================== */
@media (max-width: 1024px) {
  .preview-grid {
    grid-template-columns: repeat(2, 1fr);
    height: auto;
  }
  .preview-card {
    height: 60vh;
  }
  .gallery-grid {
    column-count: 2;
  }
}

@media (max-width: 768px) {
  :root {
    --header-height: 60px;
  }
  
  .navbar, .gallery-grid, .narrative-content, .section-quote {
    padding-left: 20px;
    padding-right: 20px;
  }

  /* Mobile Navigation */
  .mobile-menu-btn {
    display: flex;
  }
  
  .nav-links {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background: #fff;
    flex-direction: column;
    padding: 20px;
    box-shadow: 0 4px 20px rgba(0,0,0,0.05);
    transform: translateY(-100%);
    transition: transform var(--transition-fast);
    z-index: 999;
    opacity: 0;
    pointer-events: none;
  }
  
  .nav-links.active {
    transform: translateY(0);
    opacity: 1;
    pointer-events: all;
  }

  .preview-grid {
    grid-template-columns: 1fr;
  }
  
  .gallery-grid {
    column-count: 1;
  }
  
  .narrative-main-title {
    font-size: 2.5rem;
  }
  
  .narrative-image-full {
    height: 50vh;
  }
}