/* ============================================
   2025 Modern Tech Website - Main Stylesheet
   ============================================ */

/* CSS Variables */
:root {
  /* Colors */
  --primary: #0066ff;
  --primary-dark: #0052cc;
  --primary-light: #3385ff;
  --secondary: #00d4ff;
  --accent: #00ff88;
  
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-dark: #0a0e27;
  --bg-card: #ffffff;
  
  --text-primary: #1a1a2e;
  --text-secondary: #4a5568;
  --text-light: #718096;
  --text-white: #ffffff;
  
  --border-color: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.15);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;
  
  /* Typography */
  --font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei", "Helvetica Neue", Helvetica, Arial, sans-serif;
  --font-size-base: 16px;
  --font-size-sm: 14px;
  --font-size-lg: 18px;
  --font-size-xl: 24px;
  --font-size-2xl: 32px;
  --font-size-3xl: 48px;
  --font-size-4xl: 64px;
  
  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-base: 0.3s ease;
  --transition-slow: 0.5s ease;
  
  /* Layout */
  --container-width: 1200px;
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --border-radius-xl: 16px;
}

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

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

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

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

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

a:hover {
  color: var(--primary-dark);
}

/* Container */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ============================================
   Header
   ============================================ */
.header {
  background: var(--bg-primary);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--spacing-md) 0;
  gap: var(--spacing-lg);
}

.logo {
  flex-shrink: 0;
  margin-right: var(--spacing-md);
  margin-left: calc(var(--spacing-md) * -1);
  display: flex;
  align-items: center;
}

.logo-img {
  max-height: 80px;
  height: auto;
  width: auto;
  display: block;
  object-fit: contain;
  transition: opacity var(--transition-fast);
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

.logo-img:hover {
  opacity: 0.9;
}

.logo a {
  display: block;
  text-decoration: none;
  line-height: 0;
}

.nav {
  flex: 1;
  min-width: 0;
}

.nav-list {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
  align-items: center;
  flex-wrap: nowrap;
}

.nav-link {
  padding: var(--spacing-sm) var(--spacing-sm);
  color: var(--text-primary);
  font-weight: 500;
  font-size: var(--font-size-sm);
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  white-space: nowrap;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary);
  background-color: var(--bg-secondary);
}

.nav-dropdown {
  position: relative;
}

.nav-dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 200px;
  background: var(--bg-card);
  box-shadow: var(--shadow-lg);
  border-radius: var(--border-radius);
  padding: var(--spacing-xs) 0;
  margin-top: var(--spacing-xs);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-base);
  z-index: 100;
  list-style: none;
}

.dropdown-menu li {
  margin: 0;
}

.dropdown-menu a {
  display: block;
  padding: var(--spacing-sm) var(--spacing-md);
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  transition: all var(--transition-fast);
}

.dropdown-menu a:hover {
  color: var(--primary);
  background-color: var(--bg-secondary);
}

.arrow {
  font-size: 10px;
  margin-left: 4px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.lang-link {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
  transition: all var(--transition-fast);
}

.lang-link:hover,
.lang-link.active {
  color: var(--primary);
  background-color: var(--bg-secondary);
}

.lang-separator {
  color: var(--text-light);
}

.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-xs);
  z-index: 1001;
}

.mobile-menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-base);
  display: block;
}

/* ============================================
   Hero Section
   ============================================ */
.hero {
  position: relative;
  height: 600px;
  overflow: hidden;
  margin-bottom: var(--spacing-2xl);
}

.hero-slider {
  position: relative;
  width: 100%;
  height: 100%;
}

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

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

/* Banner背景图片 - Slide 1 */
.hero-slide-1 {
  background-image: url('../images/banner001.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

/* Banner背景图片 - Slide 2 */
.hero-slide-2 {
  background-image: url('../images/banner002.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

/* Banner背景图片 - Slide 3 */
.hero-slide-3 {
  background-image: url('../images/banner003.jpg');
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

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

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0, 102, 255, 0.3) 0%, rgba(0, 0, 0, 0.4) 100%);
  z-index: 1;
}

.hero-content {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  text-align: center;
  color: var(--text-white);
  z-index: 10;
  max-width: 800px;
  padding: var(--spacing-lg);
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.hero-title {
  font-size: var(--font-size-4xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  line-height: 1.2;
}

.hero-subtitle {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-xl);
  opacity: 0.95;
}

.hero-controls {
  position: absolute;
  bottom: var(--spacing-lg);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  z-index: 10;
}

.hero-prev,
.hero-next {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  border: 1px solid rgba(255, 255, 255, 0.3);
  color: var(--text-white);
  font-size: 24px;
  cursor: pointer;
  transition: all var(--transition-fast);
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-prev:hover,
.hero-next:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}

.hero-dots {
  display: flex;
  gap: var(--spacing-xs);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.4);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.dot.active {
  background: var(--text-white);
  width: 30px;
  border-radius: 5px;
}

/* ============================================
   Buttons
   ============================================ */
.btn {
  display: inline-block;
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius);
  font-weight: 600;
  font-size: var(--font-size-base);
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background: var(--primary);
  color: var(--text-white);
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  background: var(--primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
  color: var(--text-white);
}

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

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

/* ============================================
   Section Headers
   ============================================ */
.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: var(--spacing-sm);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--text-secondary);
}

.section-more {
  color: var(--primary);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-left: auto;
}

/* ============================================
   Features Section
   ============================================ */
.features {
  padding: var(--spacing-2xl) 0;
  background: var(--bg-secondary);
}

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.feature-card {
  background: var(--bg-card);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  text-align: center;
}

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

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--spacing-md);
  color: var(--primary);
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-icon svg {
  width: 100%;
  height: 100%;
}

.feature-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.feature-description {
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.6;
}

.feature-link {
  color: var(--primary);
  font-weight: 600;
  font-size: var(--font-size-sm);
}

.feature-link:hover {
  color: var(--primary-dark);
}

/* ============================================
   Products Section
   ============================================ */
.products {
  padding: var(--spacing-2xl) 0;
  background: var(--bg-primary);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  gap: var(--spacing-lg);
}

.product-card {
  background: var(--bg-card);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  cursor: pointer;
}

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

.product-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: var(--bg-secondary);
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform var(--transition-slow);
}

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

.product-content {
  padding: var(--spacing-md);
  text-align: center;
}

.product-title {
  font-size: var(--font-size-base);
  font-weight: 600;
  color: var(--text-primary);
}

/* ============================================
   News Section
   ============================================ */
.news {
  padding: var(--spacing-2xl) 0;
  background: var(--bg-secondary);
}

.news-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-xl);
}

.news-main {
  background: var(--bg-card);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.news-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.news-item {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
  transition: all var(--transition-fast);
}

.news-item:last-child {
  border-bottom: none;
}

.news-item:hover {
  background-color: var(--bg-secondary);
  border-radius: var(--border-radius);
  padding-left: var(--spacing-lg);
}

.news-date {
  flex-shrink: 0;
  color: var(--text-light);
  font-size: var(--font-size-sm);
  font-weight: 600;
  min-width: 80px;
}

.news-content {
  flex: 1;
}

.news-title {
  font-size: var(--font-size-base);
  font-weight: 500;
  margin: 0;
}

.news-title a {
  color: var(--text-primary);
}

.news-title a:hover {
  color: var(--primary);
}

.about-card {
  background: var(--bg-card);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.about-content {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.about-image {
  width: 100%;
  max-width: 200px;
  margin: 0 auto;
  border-radius: var(--border-radius);
}

.about-text {
  color: var(--text-secondary);
  line-height: 1.8;
  text-align: center;
}

/* ============================================
   Contact Section
   ============================================ */
.contact-section {
  padding: var(--spacing-2xl) 0;
  background: var(--bg-primary);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

.contact-info {
  background: var(--bg-card);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.contact-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-lg);
  color: var(--text-primary);
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.contact-item {
  color: var(--text-secondary);
  line-height: 1.8;
}

.contact-item strong {
  color: var(--text-primary);
  margin-right: var(--spacing-xs);
}

.contact-map {
  background: var(--bg-card);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

#map {
  width: 100%;
  height: 300px;
  border-radius: var(--border-radius);
  overflow: hidden;
}

/* ============================================
   Footer
   ============================================ */
.footer {
  background: var(--bg-dark);
  color: var(--text-light);
  padding: var(--spacing-xl) 0;
  margin-top: var(--spacing-2xl);
}

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

.footer-info {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-info p {
  margin: 0;
  font-size: var(--font-size-sm);
}

.footer-info a {
  color: var(--secondary);
}

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

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 1024px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  
  .news-layout {
    grid-template-columns: 1fr;
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .content-layout {
    grid-template-columns: 1fr;
  }
  
  .contact-layout {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  :root {
    --font-size-4xl: 36px;
    --font-size-3xl: 32px;
    --font-size-2xl: 24px;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
  }
  
  .header-content {
    flex-wrap: wrap;
    position: relative;
  }
  
  .logo-img {
    max-height: 70px;
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .nav {
    order: 3;
    width: 100%;
    display: none;
    margin-top: var(--spacing-md);
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-card);
    z-index: 1000;
  }
  
  .nav.active {
    display: block;
  }
  
  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-xs);
    background: var(--bg-card);
    padding: var(--spacing-md);
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-md);
  }
  
  .nav-link {
    padding: var(--spacing-sm);
    width: 100%;
    display: block;
  }
  
  .nav-dropdown {
    width: 100%;
  }
  
  .dropdown-menu {
    position: static;
    opacity: 0;
    visibility: hidden;
    max-height: 0;
    overflow: hidden;
    transform: none;
    box-shadow: none;
    margin: 0;
    padding: 0 var(--spacing-md);
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    transition: all var(--transition-base);
  }
  
  .nav-dropdown.active .dropdown-menu {
    opacity: 1;
    visibility: visible;
    max-height: 500px;
    margin: var(--spacing-xs) 0;
    padding: var(--spacing-xs) var(--spacing-md);
  }
  
  .mobile-menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  
  .mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
  }
  
  .mobile-menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
  }
  
  .mobile-menu-toggle {
    display: flex;
  }
  
  .hero {
    height: 400px;
  }
  
  .hero-title {
    font-size: var(--font-size-2xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-base);
  }
  
  .features-grid {
    grid-template-columns: 1fr;
  }
  
  .products-grid {
    grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  }
}

@media (max-width: 480px) {
  .hero {
    height: 300px;
  }
  
  .hero-content {
    padding: var(--spacing-md);
  }
  
  .hero-title {
    font-size: var(--font-size-xl);
  }
  
  .logo-img {
    max-height: 60px;
  }
  
  .logo {
    margin-left: 0;
  }
  
  .products-grid {
    grid-template-columns: 1fr;
  }
}

/* ============================================
   Page Header
   ============================================ */
.page-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: var(--text-white);
  padding: var(--spacing-2xl) 0;
  margin-bottom: var(--spacing-2xl);
}

.page-header-content {
  text-align: center;
}

.page-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
}

.breadcrumb {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-xs);
  font-size: var(--font-size-sm);
}

.breadcrumb a {
  color: var(--text-white);
  opacity: 0.9;
}

.breadcrumb a:hover {
  opacity: 1;
}

.breadcrumb .separator {
  color: var(--text-white);
  opacity: 0.6;
}

/* ============================================
   Page Content
   ============================================ */
.page-content {
  padding: var(--spacing-2xl) 0;
  background: var(--bg-primary);
}

.content-layout {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-xl);
}

.content-main {
  background: var(--bg-card);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.content-article {
  line-height: 1.8;
}

.article-header {
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-md);
  border-bottom: 2px solid var(--border-color);
}

.article-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--text-primary);
}

.article-content {
  color: var(--text-secondary);
}

.article-content p {
  margin-bottom: var(--spacing-md);
  text-indent: 2em;
}

.content-sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.sidebar-card {
  background: var(--bg-card);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.sidebar-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--primary);
}

.sidebar-content {
  color: var(--text-secondary);
  line-height: 1.8;
}

.sidebar-content p {
  margin-bottom: var(--spacing-sm);
}

.sidebar-content strong {
  color: var(--text-primary);
  margin-right: var(--spacing-xs);
}

/* ============================================
   Business Page
   ============================================ */
.business-section {
  padding: var(--spacing-xl) 0;
  border-bottom: 1px solid var(--border-color);
}

.business-section:last-child {
  border-bottom: none;
}

.business-section h2 {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  margin-bottom: var(--spacing-md);
  color: var(--primary);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--primary);
}

.business-section p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
}

.business-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.business-card {
  background: var(--bg-card);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
}

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

.business-card h3 {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.business-card p {
  color: var(--text-secondary);
  line-height: 1.6;
}

/* ============================================
   Contact Page Styles
   ============================================ */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

.contact-info-card,
.contact-map-card {
  background: var(--bg-card);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.contact-details-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
}

.contact-detail-item {
  display: flex;
  gap: var(--spacing-md);
  align-items: flex-start;
}

.contact-icon {
  font-size: 24px;
  flex-shrink: 0;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-secondary);
  border-radius: var(--border-radius);
}

.contact-detail-content h3 {
  font-size: var(--font-size-base);
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
  color: var(--text-primary);
}

.contact-detail-content p {
  color: var(--text-secondary);
  margin: 0;
}

.contact-detail-content a {
  color: var(--primary);
}

.contact-detail-content a:hover {
  color: var(--primary-dark);
}

/* ============================================
   Performance Page Styles
   ============================================ */
.performance-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.performance-item {
  display: flex;
  gap: var(--spacing-lg);
  padding: var(--spacing-lg);
  background: var(--bg-secondary);
  border-radius: var(--border-radius-lg);
  border-left: 4px solid var(--primary);
  transition: all var(--transition-base);
}

.performance-item:hover {
  background: var(--bg-card);
  box-shadow: var(--shadow-md);
  transform: translateX(8px);
}

.performance-date {
  flex-shrink: 0;
  width: 120px;
  color: var(--primary);
  font-weight: 600;
  font-size: var(--font-size-base);
  text-align: center;
  padding: var(--spacing-sm);
  background: var(--bg-card);
  border-radius: var(--border-radius);
}

.performance-content {
  flex: 1;
}

.performance-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.performance-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* ============================================
   Pagination Styles
   ============================================ */
.pagination-wrapper {
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-xl);
  border-top: 2px solid var(--border-color);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-md);
}

.pagination-info {
  color: var(--text-secondary);
  font-size: var(--font-size-sm);
}

.pagination {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
  flex-wrap: wrap;
  justify-content: center;
}

.pagination-btn,
.pagination-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 40px;
  height: 40px;
  padding: 0 var(--spacing-sm);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  background: var(--bg-card);
  color: var(--text-primary);
  text-decoration: none;
  font-size: var(--font-size-base);
  font-weight: 500;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.pagination-btn:hover:not(.disabled),
.pagination-number:hover:not(.active) {
  background: var(--primary);
  color: var(--text-white);
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.pagination-number.active {
  background: var(--primary);
  color: var(--text-white);
  border-color: var(--primary);
  font-weight: 600;
}

.pagination-btn.disabled,
.pagination-number.disabled {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

.pagination-ellipsis {
  padding: 0 var(--spacing-xs);
  color: var(--text-light);
  font-size: var(--font-size-base);
}

/* ============================================
   Projects Page Styles
   ============================================ */
.projects-filter {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
  flex-wrap: wrap;
  justify-content: center;
}

.filter-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  border: 2px solid var(--border-color);
  background: var(--bg-card);
  color: var(--text-secondary);
  border-radius: var(--border-radius);
  cursor: pointer;
  font-size: var(--font-size-base);
  font-weight: 500;
  transition: all var(--transition-fast);
}

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

.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.project-card {
  background: var(--bg-card);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  cursor: pointer;
}

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

.project-image {
  width: 100%;
  height: 200px;
  overflow: hidden;
  background: var(--bg-secondary);
}

.project-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform var(--transition-slow);
}

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

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

.project-category {
  display: inline-block;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--primary);
  color: var(--text-white);
  border-radius: var(--border-radius);
  font-size: var(--font-size-sm);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
}

.project-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.project-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin: 0;
}

/* ============================================
   Project Detail Section Styles
   ============================================ */
.project-detail-section {
  margin-top: var(--spacing-2xl);
  padding-top: var(--spacing-2xl);
  border-top: 2px solid var(--border-color);
}

.project-detail-header {
  margin-bottom: var(--spacing-xl);
}

.project-detail-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--spacing-lg);
  text-align: center;
  padding-bottom: var(--spacing-md);
  border-bottom: 3px solid var(--primary);
}

.project-detail-intro {
  background: var(--bg-secondary);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  margin-bottom: var(--spacing-xl);
}

.project-detail-intro p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
  text-indent: 2em;
}

.project-detail-intro p:last-child {
  margin-bottom: 0;
}

.project-detail-content {
  background: var(--bg-card);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

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

.detail-section:last-child {
  margin-bottom: 0;
}

.detail-section-title {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--primary);
  margin-bottom: var(--spacing-lg);
  padding-bottom: var(--spacing-sm);
  border-bottom: 2px solid var(--primary);
}

.detail-item {
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.detail-item:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.detail-item-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: var(--spacing-md);
  padding-left: var(--spacing-md);
  border-left: 4px solid var(--primary);
}

.detail-item p {
  color: var(--text-secondary);
  line-height: 1.8;
  margin-bottom: var(--spacing-md);
  text-indent: 2em;
}

.detail-item p:last-of-type {
  margin-bottom: var(--spacing-lg);
}

.detail-image {
  margin: var(--spacing-lg) 0;
  text-align: center;
  background: var(--bg-secondary);
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
}

.detail-image img {
  max-width: 100%;
  height: auto;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-md);
}

.detail-image img:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

.image-caption {
  margin-top: var(--spacing-sm);
  color: var(--text-light);
  font-size: var(--font-size-sm);
  font-style: italic;
}

.detail-list {
  list-style: none;
  padding-left: 0;
  margin: var(--spacing-md) 0;
}

.detail-list li {
  padding: var(--spacing-sm) 0;
  padding-left: var(--spacing-lg);
  position: relative;
  color: var(--text-secondary);
  line-height: 1.8;
}

.detail-list li::before {
  content: "•";
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: bold;
  font-size: 1.2em;
}

.detail-table-wrapper {
  margin: var(--spacing-lg) 0;
  overflow-x: auto;
}

.detail-table {
  width: 100%;
  max-width: 100%;
  border-collapse: collapse;
  background: var(--bg-card);
  border-radius: var(--border-radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.detail-table th,
.detail-table td {
  padding: var(--spacing-md);
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.detail-table th {
  background: var(--primary);
  color: var(--white);
  font-weight: 600;
  text-align: center;
}

.detail-table tr:nth-child(even) {
  background: var(--bg-secondary);
}

.detail-table tr:hover {
  background: rgba(0, 102, 255, 0.05);
}

.detail-table tr:last-child td {
  border-bottom: none;
}

/* ============================================
   Certificates Page Styles
   ============================================ */
.certificates-intro {
  background: var(--bg-secondary);
  padding: var(--spacing-lg);
  border-radius: var(--border-radius-lg);
  margin-bottom: var(--spacing-xl);
  text-align: center;
  color: var(--text-secondary);
  line-height: 1.8;
}

.certificates-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
}

.certificates-grid-two {
  grid-template-columns: repeat(2, 1fr);
  max-width: 1000px;
  margin: 0 auto;
  justify-items: center;
}

.certificate-card {
  background: var(--bg-card);
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  max-width: 480px;
  width: 100%;
}

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

.certificate-image {
  width: 100%;
  height: 400px;
  overflow: hidden;
  background: var(--bg-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  cursor: pointer;
  transition: all var(--transition-base);
}

.certificate-image:hover {
  transform: scale(1.02);
}

.certificate-image img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform var(--transition-base);
}

.certificate-image:hover img {
  transform: scale(1.05);
}

.image-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.4);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity var(--transition-base);
}

.certificate-image:hover .image-overlay {
  opacity: 1;
}

.zoom-icon {
  color: var(--text-white);
  font-size: var(--font-size-lg);
  font-weight: 600;
  padding: var(--spacing-sm) var(--spacing-md);
  background: rgba(0, 102, 255, 0.8);
  border-radius: var(--border-radius);
  backdrop-filter: blur(4px);
}

.certificate-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  color: var(--text-light);
}

.placeholder-icon {
  font-size: 48px;
  margin-bottom: var(--spacing-sm);
}

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

.certificate-title {
  font-size: var(--font-size-xl);
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.certificate-desc {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--spacing-sm);
}

.certificate-number,
.certificate-date {
  color: var(--text-light);
  font-size: var(--font-size-sm);
  margin: var(--spacing-xs) 0;
}

/* ============================================
   Image Modal Styles
   ============================================ */
.image-modal {
  display: none;
  position: fixed;
  z-index: 10000;
  left: 0;
  top: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(0, 0, 0, 0.9);
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.3s ease;
}

.image-modal.show {
  display: flex;
}

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

.modal-close {
  position: absolute;
  top: 30px;
  right: 40px;
  color: var(--text-white);
  font-size: 48px;
  font-weight: bold;
  cursor: pointer;
  z-index: 10001;
  transition: all var(--transition-fast);
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  backdrop-filter: blur(4px);
}

.modal-close:hover {
  background: rgba(255, 255, 255, 0.2);
  transform: rotate(90deg);
}

.modal-content {
  max-width: 90%;
  max-height: 90%;
  object-fit: contain;
  border-radius: var(--border-radius);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  animation: zoomIn 0.3s ease;
}

@keyframes zoomIn {
  from {
    transform: scale(0.8);
    opacity: 0;
  }
  to {
    transform: scale(1);
    opacity: 1;
  }
}

.modal-caption {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--text-white);
  font-size: var(--font-size-lg);
  font-weight: 600;
  text-align: center;
  background: rgba(0, 0, 0, 0.6);
  padding: var(--spacing-sm) var(--spacing-lg);
  border-radius: var(--border-radius);
  backdrop-filter: blur(4px);
}

/* ============================================
   Responsive Updates
   ============================================ */
@media (max-width: 1024px) {
  .contact-layout {
    grid-template-columns: 1fr;
  }
  
  .projects-grid,
  .certificates-grid {
    grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
  }
}

@media (max-width: 768px) {
  .performance-item {
    flex-direction: column;
    gap: var(--spacing-md);
  }
  
  .performance-date {
    width: 100%;
    text-align: left;
  }
  
  .projects-grid,
  .certificates-grid {
    grid-template-columns: 1fr;
  }
  
  .certificates-grid-two {
    grid-template-columns: 1fr;
  }
  
  .certificate-card {
    max-width: 100%;
  }
  
  .certificate-image {
    height: 300px;
  }
  
  .modal-close {
    top: 15px;
    right: 20px;
    font-size: 36px;
    width: 40px;
    height: 40px;
  }
  
  .modal-content {
    max-width: 95%;
    max-height: 85%;
  }
  
  .modal-caption {
    bottom: 15px;
    font-size: var(--font-size-base);
    padding: var(--spacing-xs) var(--spacing-md);
  }
}

/* ============================================
   Utilities
   ============================================ */
.text-center {
  text-align: center;
}

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }