@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500&display=swap');

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

:root {
  --color-primary: #2A2A2A;
  --color-secondary: #F5F5F5;
  --color-accent: #C9ADA7;
  --color-text: #2A2A2A;
  --color-text-light: #999999;
  --transition-smooth: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-fast: all 0.3s ease;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--color-secondary);
  color: var(--color-text);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.loading-screen {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background-color: var(--color-secondary);
  display: flex;
  justify-content: center;
  align-items: center;
  z-index: 9999;
  transition: opacity 0.6s ease, visibility 0.6s ease;
}

.loading-screen.hidden {
  opacity: 0;
  visibility: hidden;
}

.loader {
  width: 60px;
  height: 60px;
  border: 2px solid var(--color-text-light);
  border-top: 2px solid var(--color-primary);
  border-radius: 50%;
  animation: spin 1.2s cubic-bezier(0.5, 0, 0.5, 1) infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  padding: 2rem 4rem;
  display: flex;
  justify-content: center;
  gap: 4rem;
  background: linear-gradient(to bottom, rgba(245, 245, 245, 0.95), transparent);
  z-index: 1000;
  backdrop-filter: blur(10px);
}

nav a {
  color: var(--color-text);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  position: relative;
  transition: var(--transition-fast);
}

nav a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-primary);
  transition: var(--transition-fast);
}

nav a:hover::after,
nav a.active::after {
  width: 100%;
}

nav a.active {
  font-weight: 500;
}

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

.hero-image {
  width: 100%;
  height: 100vh;
  object-fit: cover;
  object-position: center;
  filter: brightness(0.95);
}

.hero-title {
  position: absolute;
  bottom: 8rem;
  left: 4rem;
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: rgba(42, 42, 42, 0.6);
  text-transform: uppercase;
  animation: fadeInUp 1.2s ease;
}

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

.content-section {
  padding: 8rem 4rem;
  max-width: 1600px;
  margin: 0 auto;
}

.section-title {
  font-size: 0.875rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  margin-bottom: 4rem;
  color: var(--color-text-light);
  text-align: center;
  text-transform: uppercase;
}

.visual-block {
  margin-bottom: 12rem;
  opacity: 0;
  transform: translateY(60px);
  transition: var(--transition-smooth);
}

.visual-block.visible {
  opacity: 1;
  transform: translateY(0);
}

.visual-block img {
  width: 100%;
  height: auto;
  display: block;
  transition: var(--transition-smooth);
}

.visual-block:hover img {
  transform: scale(1.02);
}

.visual-caption {
  margin-top: 1.5rem;
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--color-text-light);
  text-align: center;
}

.grid-gallery {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 3rem;
  padding: 4rem;
}

.gallery-item {
  position: relative;
  overflow: hidden;
  cursor: pointer;
  aspect-ratio: 3/4;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
  filter: brightness(0.95);
}

.gallery-item:hover img {
  transform: scale(1.05);
  filter: brightness(0.85);
}

.gallery-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem;
  background: linear-gradient(to top, rgba(42, 42, 42, 0.9), transparent);
  transform: translateY(100%);
  transition: var(--transition-smooth);
}

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

.gallery-title {
  font-size: 1rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  color: #F5F5F5;
  margin-bottom: 0.5rem;
}

.gallery-desc {
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.05em;
  color: rgba(245, 245, 245, 0.8);
  line-height: 1.6;
}

.detail-section {
  padding: 8rem 0;
}

.detail-header {
  text-align: center;
  margin-bottom: 6rem;
  padding: 0 2rem;
}

.detail-series-title {
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
}

.detail-image-block {
  margin-bottom: 8rem;
  position: relative;
}

.detail-image-block img {
  width: 100%;
  height: auto;
  display: block;
}

.detail-text {
  position: absolute;
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: rgba(42, 42, 42, 0.5);
  padding: 1rem 2rem;
}

.detail-text.left {
  left: 4rem;
  bottom: 4rem;
}

.detail-text.right {
  right: 4rem;
  top: 4rem;
}

.back-link {
  display: inline-block;
  margin: 4rem;
  padding: 1rem 2rem;
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--color-text);
  text-decoration: none;
  border: 1px solid var(--color-text-light);
  transition: var(--transition-fast);
}

.back-link:hover {
  background-color: var(--color-primary);
  color: var(--color-secondary);
  border-color: var(--color-primary);
}

footer {
  padding: 4rem 2rem;
  text-align: center;
}

footer p {
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.1em;
  color: var(--color-text-light);
}

@media (max-width: 768px) {
  nav {
    padding: 1.5rem 2rem;
    gap: 2rem;
  }

  .hero-title {
    left: 2rem;
    bottom: 4rem;
  }

  .content-section {
    padding: 4rem 2rem;
  }

  .visual-block {
    margin-bottom: 6rem;
  }

  .grid-gallery {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding: 2rem;
  }

  .detail-section {
    padding: 4rem 0;
  }

  .detail-header {
    margin-bottom: 3rem;
  }

  .detail-image-block {
    margin-bottom: 4rem;
  }

  .detail-text.left,
  .detail-text.right {
    position: static;
    padding: 1rem;
    text-align: center;
  }

  .back-link {
    margin: 2rem;
  }
}

.parallax {
  transform: translateY(var(--parallax-offset, 0));
  transition: transform 0.1s linear;
}

img {
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

::selection {
  background-color: var(--color-accent);
  color: var(--color-secondary);
}