/* Tailwind CSS Custom Styles for Modern Mens Fashion Website */

/* Import Google Fonts - Source Han Sans for Chinese and Playfair Display for English */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+SC:wght@300;400;500;700&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Playfair+Display:ital,wght@0,400;0,700;1,400&display=swap');

/* Custom CSS Variables for Design Tokens */
:root {
  /* Color Palette - Neutral & Sophisticated */
  --color-primary: #1a1a1a;
  --color-secondary: #f5f5f0;
  --color-accent: #2c3e50;
  --color-accent-alt: #c97c5d;
  --color-text: #333333;
  --color-text-light: #666666;
  --color-text-lighter: #999999;
  --color-white: #ffffff;
  
  /* Typography */
  --font-family-chinese: 'Noto Sans SC', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-family-english: 'Playfair Display', Georgia, serif;
  
  /* Spacing Scale */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  
  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-base: 0.3s ease-in-out;
  --transition-slow: 0.5s ease-in-out;
}

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

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

body {
  font-family: var(--font-family-chinese);
  color: var(--color-text);
  background-color: var(--color-secondary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Typography Styles */
h1, h2, h3, h4, h5, h6 {
  font-weight: 500;
  line-height: 1.3;
  margin-bottom: var(--spacing-lg);
  color: var(--color-primary);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(1.5rem, 4vw, 2.5rem);
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.875rem);
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-light);
}

/* English Typography for Design Elements */
.font-serif {
  font-family: var(--font-family-english);
}

/* Navigation Styles */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  padding: var(--spacing-md) 0;
  border-bottom: 1px solid rgba(0, 0, 0, 0.1);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-menu {
  display: flex;
  gap: var(--spacing-xl);
  list-style: none;
}

.nav-link {
  color: var(--color-text);
  text-decoration: none;
  font-weight: 400;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-link:hover {
  color: var(--color-accent);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1px;
  background-color: var(--color-accent);
  transition: width var(--transition-base);
}

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

/* Hero Section Styles */
.hero {
  position: relative;
  height: 100vh;
  overflow: hidden;
}

.carousel-container {
  position: relative;
  height: 100%;
  width: 100%;
}

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

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

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

.hero-content {
  position: absolute;
  bottom: 10%;
  left: 50%;
  transform: translateX(-50%);
  text-align: center;
  color: var(--color-white);
  z-index: 10;
  padding: var(--spacing-2xl);
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(5px);
  border-radius: var(--radius-lg);
  max-width: 600px;
}

/* Button Styles */
.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  margin: var(--spacing-sm);
  background: var(--color-primary);
  color: var(--color-white);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  font-weight: 500;
  text-align: center;
  border: none;
  cursor: pointer;
}

.btn:hover {
  background: var(--color-accent);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

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

/* Content Section Styles */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--spacing-3xl) var(--spacing-md);
}

.section {
  margin-bottom: var(--spacing-3xl);
}

/* Image Styles */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

.image-caption {
  margin-top: var(--spacing-sm);
  text-align: center;
  font-size: 0.875rem;
  color: var(--color-text-lighter);
  font-style: italic;
}

/* Article Styles */
.article {
  margin-bottom: var(--spacing-3xl);
  display: grid;
  gap: var(--spacing-xl);
  align-items: center;
}

.article-image {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
}

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

/* Masonry Layout */
.masonry-grid {
  column-count: 3;
  column-gap: var(--spacing-lg);
}

.masonry-item {
  break-inside: avoid;
  margin-bottom: var(--spacing-lg);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  transition: transform var(--transition-base);
}

.masonry-item:hover {
  transform: translateY(-4px);
}

.masonry-item img {
  width: 100%;
  height: auto;
}

/* Filter Buttons */
.filter-buttons {
  display: flex;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-2xl);
  flex-wrap: wrap;
}

.filter-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--color-white);
  border: 1px solid var(--color-text-lighter);
  border-radius: var(--radius-xl);
  color: var(--color-text-light);
  transition: all var(--transition-base);
  cursor: pointer;
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

/* Tag Cloud */
.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin: var(--spacing-xl) 0;
}

.tag {
  padding: var(--spacing-xs) var(--spacing-md);
  background: rgba(44, 62, 80, 0.1);
  border-radius: var(--radius-xl);
  font-size: 0.875rem;
  color: var(--color-accent);
  transition: all var(--transition-base);
}

.tag:hover {
  background: var(--color-accent);
  color: var(--color-white);
}

/* Footer */
.footer {
  background: var(--color-primary);
  color: var(--color-white);
  text-align: center;
  padding: var(--spacing-xl);
  margin-top: var(--spacing-3xl);
}

/* Lightbox */
.lightbox {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.9);
  z-index: 2000;
  align-items: center;
  justify-content: center;
}

.lightbox.active {
  display: flex;
}

.lightbox-content {
  max-width: 90%;
  max-height: 90%;
  position: relative;
}

.lightbox-close {
  position: absolute;
  top: -40px;
  right: 0;
  color: var(--color-white);
  font-size: 2rem;
  cursor: pointer;
  background: none;
  border: none;
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-menu {
    gap: var(--spacing-md);
    font-size: 0.875rem;
  }
  
  .masonry-grid {
    column-count: 2;
  }
  
  .hero-content {
    bottom: 5%;
    padding: var(--spacing-lg);
    max-width: 90%;
  }
  
  .article {
    grid-template-columns: 1fr;
  }
  
  .container {
    padding: var(--spacing-xl) var(--spacing-md);
  }
}

@media (max-width: 480px) {
  .masonry-grid {
    column-count: 1;
  }
  
  .nav-menu {
    flex-direction: column;
    gap: var(--spacing-sm);
  }
  
  .filter-buttons {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
    margin: var(--spacing-xs) 0;
  }
}

/* Animation Classes */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-secondary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-accent);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent-alt);
}