/* 
 * Fashion Gallery - Global Styles
 * Design Philosophy: Minimalist, Visual-First, Modern
 * Author: HAISNAP
 */

:root {
  /* Color Palette */
  --bg-color: #fcfcfc;
  --bg-secondary: #f4f4f4;
  --text-primary: #111111;
  --text-secondary: #666666;
  --text-light: #999999;
  --accent-color: #ffcdb2; /* Soft Peach */
  --accent-hover: #e0b098;
  --border-color: #e5e5e5;
  --overlay-dark: rgba(0, 0, 0, 0.4);
  --nav-bg: rgba(255, 255, 255, 0.85);

  /* Typography */
  --font-main: 'Inter', 'Helvetica Neue', 'HarmonyOS Sans', 'Source Han Sans CN', sans-serif;
  --font-weight-light: 300;
  --font-weight-regular: 400;
  --font-weight-bold: 600;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 8rem;

  /* Transitions */
  --transition-smooth: all 0.4s cubic-bezier(0.25, 1, 0.5, 1);
  --transition-fade: opacity 0.3s ease;
}

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

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

body {
  font-family: var(--font-main);
  background-color: var(--bg-color);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

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

ul {
  list-style: none;
}

img {
  max-width: 100%;
  display: block;
  object-fit: cover;
}

/* --- Typography --- */
h1, h2, h3, h4 {
  font-weight: var(--font-weight-light);
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-sm);
}

h1 { font-size: 3.5rem; line-height: 1.1; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.5rem; }
p { margin-bottom: var(--spacing-sm); color: var(--text-secondary); }

/* --- Global Navigation --- */
.global-nav {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 80px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0 var(--spacing-md);
  background: var(--nav-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  z-index: 1000;
  border-bottom: 1px solid rgba(0,0,0,0.03);
  transition: transform 0.3s ease;
}

.nav-logo {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.logo-symbol {
  width: 24px;
  height: 24px;
  position: relative;
}

.logo-symbol::before, .logo-symbol::after {
  content: '';
  position: absolute;
  background-color: var(--text-primary);
  width: 100%;
  height: 1.5px;
  top: 50%;
  left: 0;
  transition: var(--transition-smooth);
}

.logo-symbol::before { transform: rotate(45deg); }
.logo-symbol::after { transform: rotate(-45deg); }

.nav-links {
  display: flex;
  gap: var(--spacing-md);
}

.nav-item {
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-secondary);
  position: relative;
  padding: 5px 0;
}

.nav-item::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--accent-color);
  transition: var(--transition-smooth);
}

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

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

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  cursor: pointer;
  font-size: 1.5rem;
}

/* --- Hero Section (Home) --- */
.hero-section {
  position: relative;
  height: 100vh;
  width: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  overflow: hidden;
  color: #fff;
}

.hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  z-index: -2;
  transform: scale(1.05); /* Slight zoom for parallax feel */
  animation: slowZoom 20s infinite alternate;
}

@keyframes slowZoom {
  from { transform: scale(1.05); }
  to { transform: scale(1.15); }
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0,0,0,0.35);
  z-index: -1;
}

.hero-slogan {
  font-size: clamp(2.5rem, 5vw, 6rem);
  font-weight: 200;
  letter-spacing: 0.05em;
  opacity: 0;
  animation: fadeInUp 1.2s ease-out forwards 0.5s;
  text-shadow: 0 4px 20px rgba(0,0,0,0.2);
}

.scroll-indicator {
  position: absolute;
  bottom: var(--spacing-md);
  left: 50%;
  transform: translateX(-50%);
  font-size: 2rem;
  opacity: 0;
  animation: fadeInDown 1s ease-out forwards 1.5s, bounce 2s infinite 2.5s;
  cursor: pointer;
}

/* --- Section Layouts --- */
.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: var(--spacing-xl) var(--spacing-md);
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-lg);
}

.section-title {
  font-size: 2rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  font-weight: 300;
  color: var(--text-primary);
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: var(--spacing-sm) auto 0;
}

/* --- Preview Grid (Home) --- */
.preview-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

.preview-card {
  position: relative;
  overflow: hidden;
  group: hover;
  cursor: pointer;
}

.preview-card img {
  width: 100%;
  height: 600px;
  object-fit: cover;
  transition: transform 0.6s cubic-bezier(0.2, 1, 0.3, 1);
}

.preview-card:hover img {
  transform: scale(1.03);
}

.preview-info {
  margin-top: var(--spacing-sm);
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid transparent;
  padding-bottom: 4px;
  transition: border-color 0.3s ease;
}

.preview-card:hover .preview-info {
  border-bottom-color: var(--accent-color);
}

.preview-title {
  font-size: 1rem;
  letter-spacing: 0.05em;
  color: var(--text-primary);
}

/* --- Style Atlas (Masonry) --- */
.filter-bar {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
  flex-wrap: wrap;
}

.filter-btn {
  background: none;
  border: none;
  font-size: 0.9rem;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 8px 16px;
  border-radius: 20px;
  transition: all 0.3s ease;
}

.filter-btn.active, .filter-btn:hover {
  background-color: var(--text-primary);
  color: #fff;
}

.masonry-grid {
  column-count: 3;
  column-gap: var(--spacing-md);
}

.masonry-item {
  break-inside: avoid;
  margin-bottom: var(--spacing-md);
  position: relative;
  overflow: hidden;
}

.masonry-item img {
  width: 100%;
  height: auto;
  transition: filter 0.3s ease;
}

.masonry-overlay {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  padding: var(--spacing-sm);
  background: rgba(255,255,255,0.9);
  transform: translateY(100%);
  transition: transform 0.4s cubic-bezier(0.2, 1, 0.3, 1);
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

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

.tag-pill {
  font-size: 0.75rem;
  border: 1px solid var(--border-color);
  padding: 4px 8px;
  border-radius: 4px;
  color: var(--text-secondary);
}

.load-more-container {
  text-align: center;
  margin-top: var(--spacing-lg);
}

.btn-outline {
  display: inline-block;
  padding: 12px 32px;
  border: 1px solid var(--text-primary);
  color: var(--text-primary);
  font-size: 0.9rem;
  letter-spacing: 0.1em;
  background: transparent;
  cursor: pointer;
  transition: all 0.3s ease;
}

.btn-outline:hover {
  background: var(--text-primary);
  color: #fff;
}

/* --- Item Gaze (Carousel) --- */
.carousel-container {
  position: relative;
  width: 100%;
  height: 80vh;
  overflow: hidden;
  margin-bottom: var(--spacing-xl);
}

.carousel-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0;
  transition: opacity 0.8s ease;
}

.carousel-slide.active {
  opacity: 1;
  z-index: 1;
}

.carousel-slide img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.carousel-caption {
  position: absolute;
  bottom: var(--spacing-lg);
  left: var(--spacing-lg);
  color: #fff;
  z-index: 2;
  text-shadow: 0 2px 10px rgba(0,0,0,0.3);
}

.carousel-controls {
  position: absolute;
  bottom: var(--spacing-lg);
  right: var(--spacing-lg);
  z-index: 10;
  display: flex;
  gap: var(--spacing-sm);
}

.carousel-btn {
  background: rgba(255,255,255,0.2);
  border: 1px solid rgba(255,255,255,0.5);
  color: #fff;
  width: 40px;
  height: 40px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.3s;
}

.carousel-btn:hover {
  background: rgba(255,255,255,0.4);
}

.details-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

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

.detail-item img {
  width: 100%;
  aspect-ratio: 1;
  object-fit: cover;
  margin-bottom: var(--spacing-xs);
  transition: transform 0.4s ease;
}

.detail-item:hover img {
  transform: scale(0.98);
}

.detail-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
  font-style: italic;
}

/* --- Behind Scenes (Collage) --- */
.collage-container {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  grid-auto-rows: 300px;
  gap: var(--spacing-sm);
  padding: 0 var(--spacing-md);
}

.collage-item {
  position: relative;
  overflow: hidden;
  background-color: #eee;
}

.collage-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: grayscale(100%);
  transition: filter 0.5s ease;
}

.collage-item:hover img {
  filter: grayscale(0%);
}

.collage-note {
  position: absolute;
  bottom: 10px;
  right: 10px;
  font-family: 'Courier New', monospace;
  font-size: 0.75rem;
  color: #fff;
  background: rgba(0,0,0,0.6);
  padding: 4px 8px;
  opacity: 0;
  transition: opacity 0.3s ease;
}

.collage-item:hover .collage-note {
  opacity: 1;
}

.collage-item:nth-child(1) { grid-column: span 2; grid-row: span 2; }
.collage-item:nth-child(4) { grid-column: span 2; }

/* --- About Page (Text) --- */
.about-content {
  max-width: 800px;
  margin: 15vh auto;
  padding: 0 var(--spacing-md);
  text-align: center;
}

.about-text {
  font-size: 1.25rem;
  line-height: 2;
  font-weight: 300;
  color: var(--text-primary);
}

.about-signature {
  margin-top: var(--spacing-lg);
  font-size: 0.9rem;
  color: var(--text-secondary);
  letter-spacing: 0.2em;
}

/* --- Footer --- */
.site-footer {
  padding: var(--spacing-lg) 0;
  border-top: 1px solid var(--border-color);
  text-align: center;
  margin-top: auto;
}

.footer-text {
  font-size: 0.8rem;
  color: var(--text-light);
  letter-spacing: 0.1em;
}

/* --- Animations --- */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes fadeInDown {
  from { opacity: 0; transform: translateY(-20px); }
  to { opacity: 1; transform: translateY(0); }
}

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

/* --- Responsive --- */
@media (max-width: 1024px) {
  .masonry-grid { column-count: 2; }
  .collage-container { grid-template-columns: repeat(2, 1fr); }
  .collage-item:nth-child(1) { grid-column: span 2; grid-row: span 1; }
}

@media (max-width: 768px) {
  h1 { font-size: 2.5rem; }
  .nav-links { display: none; } /* Simplified for MVP, JS would handle hamburger */
  
  /* Mobile Menu Hack for CSS-only if needed, but we have JS */
  .menu-toggle { display: block; }
  .nav-links.mobile-active {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 80px;
    left: 0;
    width: 100%;
    background: #fff;
    padding: var(--spacing-md);
    box-shadow: 0 10px 20px rgba(0,0,0,0.05);
  }
  
  .hero-slogan { font-size: 2rem; }
  .masonry-grid { column-count: 1; }
  .collage-container { grid-template-columns: 1fr; }
  .collage-item:nth-child(1) { grid-column: span 1; }
  .collage-item:nth-child(4) { grid-column: span 1; }
}