/* Modern Stunning Website Design */
:root {
  /* Modern Color Palette */
  --primary-color: #6366f1;
  --primary-dark: #4f46e5;
  --primary-light: #8b5cf6;
  --secondary-color: #06b6d4;
  --accent-color: #f59e0b;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --error-color: #ef4444;
  
  /* Background Colors */
  --bg-primary: #fafbfc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f8fafc;
  --bg-dark: #1e293b;
  --bg-card: #ffffff;
  --bg-gradient: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  --bg-hero: linear-gradient(135deg, #f093fb 0%, #f5576c 4%, #4facfe 100%);
  
  /* Text Colors */
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --text-light: #cbd5e1;
  --text-white: #ffffff;
  
  /* Border & Shadow */
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
  --shadow-colored: 0 10px 25px rgba(99, 102, 241, 0.15);
  
  /* Typography */
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-display: 'Cal Sans', 'Inter', sans-serif;
  
  /* Spacing & Sizing */
  --radius-sm: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  
  /* Transitions */
  --transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

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

body {
  font-family: var(--font-family);
  background: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  font-weight: 400;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 25% 25%, rgba(99, 102, 241, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(139, 92, 246, 0.06) 0%, transparent 50%),
    linear-gradient(135deg, rgba(240, 147, 251, 0.02) 0%, rgba(245, 87, 108, 0.02) 50%, rgba(79, 172, 254, 0.02) 100%);
  pointer-events: none;
  z-index: -1;
}

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

::-webkit-scrollbar-track {
  background: var(--bg-tertiary);
}

::-webkit-scrollbar-thumb {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

/* Typography */
.gradient-text {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

.text-gradient-purple {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.highlight-text {
  color: var(--primary-color);
  font-weight: 600;
}

.neon-text {
  color: var(--primary-color);
  text-shadow: 
    0 0 5px currentColor,
    0 0 10px currentColor,
    0 0 15px currentColor;
}

/* Modern Card Effects */
.modern-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
  transition: var(--transition-slow);
}

.modern-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-2xl);
  border-color: var(--primary-color);
}

.glass-card {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-xl);
}

/* Glass Effect Utility */
.glass {
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
}

/* Modern Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 1rem 2rem;
  font-size: 0.875rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: var(--transition-slow);
  position: relative;
  overflow: hidden;
  font-family: inherit;
  white-space: nowrap;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.6s;
}

.btn:hover::before {
  left: 100%;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  color: white;
  box-shadow: var(--shadow-colored);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 35px rgba(99, 102, 241, 0.3);
  background: linear-gradient(135deg, var(--primary-dark), var(--primary-color));
}

.btn-secondary {
  background: var(--bg-card);
  color: var(--primary-color);
  border: 2px solid var(--primary-color);
  box-shadow: var(--shadow-md);
}

.btn-secondary:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-3px);
  box-shadow: var(--shadow-colored);
}

.btn-gradient {
  background: var(--bg-hero);
  color: white;
  box-shadow: var(--shadow-xl);
}

.btn-gradient:hover {
  transform: translateY(-3px) scale(1.02);
  box-shadow: var(--shadow-2xl);
}

/* Modern Navigation */
.navbar {
  position: fixed;
  top: 0;
  width: 100%;
  z-index: 1000;
  padding: 1rem 0;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-light);
  transition: var(--transition-slow);
}

.navbar.scrolled {
  background: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-lg);
  padding: 0.75rem 0;
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  z-index: 1001;
}

.nav-logo img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  border-radius: var(--radius-md);
}

.nav-logo-text {
  font-size: 1.4rem;
  font-weight: 600;
  font-family: 'Comfortaa', 'Poppins', 'Nunito', -apple-system, BlinkMacSystemFont, sans-serif;
  background: linear-gradient(135deg, #1976d2 0%, #2196f3 50%, #4a4a4a 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.02em;
  position: relative;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  animation: gradientFlow 3s ease-in-out infinite;
  text-transform: none;
  filter: drop-shadow(0 0 8px rgba(25, 118, 210, 0.2));
}

.nav-logo-text::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, #1976d2 0%, #2196f3 50%, #4a4a4a 100%);
  background-size: 200% 200%;
  border-radius: 8px;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: -1;
  filter: blur(10px);
  animation: gradientFlow 3s ease-in-out infinite;
}

.nav-logo-text:hover {
  transform: scale(1.05) translateY(-1px);
  filter: drop-shadow(0 0 15px rgba(25, 118, 210, 0.4)) drop-shadow(0 0 25px rgba(33, 150, 243, 0.3));
  animation: gradientFlow 2s ease-in-out infinite;
}

.nav-logo-text:hover::before {
  opacity: 0.3;
}

@keyframes gradientFlow {
  0%, 100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}



.nav-menu {
  display: flex;
  list-style: none;
  gap: 2rem;
  margin: 0;
  padding: 0;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.875rem;
  position: relative;
  transition: var(--transition);
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-lg);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.nav-link::before {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 3px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  transition: var(--transition);
  transform: translateX(-50%);
  border-radius: 2px;
}

.nav-link:hover,
.nav-link.active {
  color: var(--primary-color);
  background: rgba(99, 102, 241, 0.05);
}

.nav-link:hover::before,
.nav-link.active::before {
  width: 60%;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  cursor: pointer;
  z-index: 1001;
}

.nav-toggle .bar {
  width: 25px;
  height: 3px;
  background: var(--text-primary);
  margin: 3px 0;
  transition: var(--transition);
  border-radius: 2px;
}

.nav-toggle.active .bar:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-toggle.active .bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.active .bar:nth-child(3) {
  transform: rotate(-45deg) translate(7px, -6px);
}

/* Stunning Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  padding: 8rem 0 4rem;
  background: 
    linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(139, 92, 246, 0.05) 50%, transparent 100%),
    linear-gradient(45deg, rgba(240, 147, 251, 0.05) 0%, rgba(79, 172, 254, 0.05) 100%);
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -50%;
  width: 100%;
  height: 100%;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.1) 0%, transparent 70%);
  animation: float 6s ease-in-out infinite;
}

.hero-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-content {
  z-index: 3;
}

.hero-title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.hero-subtitle {
  font-size: clamp(1.1rem, 2.5vw, 1.4rem);
  color: var(--text-secondary);
  margin-bottom: 3rem;
  line-height: 1.7;
  font-weight: 400;
}

.hero-buttons {
  display: flex;
  gap: 1.5rem;
  margin-bottom: 4rem;
  flex-wrap: wrap;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 2rem;
}

.stat-card {
  text-align: center;
  padding: 1.2rem 1rem;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  transition: var(--transition-slow);
  box-shadow: var(--shadow-lg);
}

.stat-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: var(--shadow-2xl);
  border-color: var(--primary-color);
  background: rgba(255, 255, 255, 0.95);
}

.stat-number {
  display: block;
  font-size: 1.8rem;
  font-weight: 800;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.3rem;
  letter-spacing: -0.02em;
}

.stat-label {
  font-size: 0.75rem;
  color: var(--text-secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-image-container {
  position: relative;
  width: 100%;
  max-width: 500px;
}

.hero-main-image {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-medium);
  border: 1px solid var(--border-light);
}

.floating-elements {
  position: absolute;
  inset: 0;
}

.floating-card {
  position: absolute;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
  color: var(--text-primary);
  box-shadow: var(--shadow-light);
  font-size: 0.875rem;
}

.floating-card:nth-child(1) {
  top: 10%;
  right: -10%;
}

.floating-card:nth-child(2) {
  bottom: 30%;
  left: -15%;
}

.floating-card:nth-child(3) {
  top: 60%;
  right: -5%;
}

.floating-card i {
  font-size: 1rem;
  color: var(--primary-color);
}

/* Hero Background Effects */
.hero-bg-effects {
  position: absolute;
  inset: 0;
  overflow: hidden;
  z-index: 1;
}

.bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.3;
  animation: pulse 4s ease-in-out infinite;
}

.bg-orb:nth-child(1) {
  width: 300px;
  height: 300px;
  background: var(--primary-color);
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}

.bg-orb:nth-child(2) {
  width: 200px;
  height: 200px;
  background: var(--secondary-color);
  bottom: 20%;
  right: 15%;
  animation-delay: -2s;
}

.bg-orb:nth-child(3) {
  width: 250px;
  height: 250px;
  background: var(--accent-color);
  top: 50%;
  right: 10%;
  animation-delay: -4s;
}

/* Sections */
.section {
  padding: 4rem 0;
  position: relative;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.section-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Modern Services Section */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.service-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  transition: var(--transition-slow);
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.service-card:hover::before {
  transform: scaleX(1);
}

.service-card:hover {
  transform: translateY(-12px);
  box-shadow: var(--shadow-2xl);
  border-color: var(--primary-color);
}

.service-card.featured {
  border: 2px solid var(--primary-color);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.03) 0%, rgba(139, 92, 246, 0.03) 100%);
  box-shadow: var(--shadow-colored);
}

.service-card.featured::after {
  content: '推荐';
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  color: white;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-lg);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  box-shadow: var(--shadow-md);
}

.service-icon {
  width: 80px;
  height: 80px;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-colored);
  position: relative;
}

.service-icon::before {
  content: '';
  position: absolute;
  inset: 3px;
  background: var(--bg-card);
  border-radius: calc(var(--radius-xl) - 3px);
  z-index: 1;
}

.service-icon i {
  font-size: 2rem;
  background: linear-gradient(135deg, var(--primary-color), var(--primary-light));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  z-index: 2;
  position: relative;
}

.service-title {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-primary);
  letter-spacing: -0.01em;
}

.service-description {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.5;
  font-size: 0.95rem;
}

.service-features {
  list-style: none;
}

.service-features li {
  position: relative;
  padding: 0.5rem 0 0.5rem 2rem;
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.4;
}

.service-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  top: 0.75rem;
  width: 1.25rem;
  height: 1.25rem;
  background: linear-gradient(135deg, var(--success-color), #34d399);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: bold;
}

/* About Section */
.about-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: flex-start;
  padding-top: 3rem;
}

.about-image {
  position: relative;
  overflow: visible;
  border-radius: 24px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(139, 92, 246, 0.1));
  padding: 12px 60px 12px 12px;
  margin-right: 40px;
  margin-top: 4rem;
  transform: scale(1.15);
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
}

.about-image::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, #6366f1, #8b5cf6, #ec4899);
  border-radius: 24px;
  opacity: 0;
  transition: opacity 0.3s ease;
  z-index: 0;
}

.about-image:hover::before {
  opacity: 0.1;
}

.about-image:hover {
  transform: translateY(-8px) scale(1.18);
  box-shadow: 0 25px 50px -12px rgba(99, 102, 241, 0.3);
}

.about-image img {
  width: 100%;
  border-radius: 20px;
  box-shadow: var(--shadow-xl);
  border: 2px solid rgba(255, 255, 255, 0.8);
  position: relative;
  z-index: 1;
  transition: all 0.4s ease;
  filter: brightness(1.05) contrast(1.1);
}

.about-image:hover img {
  transform: scale(1.03);
  filter: brightness(1.1) contrast(1.15);
}

.about-stats {
  position: absolute;
  bottom: -20px;
  right: -20px;
  display: flex;
  flex-direction: row;
  gap: 0.75rem;
  z-index: 2;
  animation: float 3s ease-in-out infinite;
}

.about-stat-card {
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(20px);
  border: 2px solid rgba(99, 102, 241, 0.2);
  border-radius: 12px;
  padding: 0.6rem 0.5rem;
  text-align: center;
  min-width: 70px;
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 10px 25px rgba(99, 102, 241, 0.15);
  position: relative;
  overflow: hidden;
}

.about-stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(135deg, #6366f1, #8b5cf6, #ec4899);
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.about-stat-card:hover::before {
  transform: scaleX(1);
}

.about-stat-card:hover {
  transform: translateY(-5px) scale(1.05);
  border-color: rgba(99, 102, 241, 0.4);
  box-shadow: 0 15px 35px rgba(99, 102, 241, 0.25);
}

.about-stat-number {
  display: block;
  font-size: 1.1rem;
  font-weight: 800;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.15rem;
  letter-spacing: -0.01em;
  line-height: 1;
}

.about-stat-label {
  font-size: 0.65rem;
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  line-height: 1.1;
}

.about-features {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 2rem;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--bg-glass);
  backdrop-filter: blur(10px);
  border: 1px solid var(--border-glass);
  border-radius: 16px;
  transition: var(--transition);
}

.feature-item:hover {
  transform: translateX(10px);
  border-color: var(--primary-color);
}

.feature-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.feature-icon i {
  font-size: 1.2rem;
  color: white;
}

.feature-content h4 {
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.feature-content p {
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Portfolio Section */
.portfolio-filter {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  margin-bottom: 3rem;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 0.5rem 1rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  font-family: inherit;
  font-size: 0.875rem;
  font-weight: 500;
}

.filter-btn.active,
.filter-btn:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  transform: translateY(-1px);
}

.portfolio-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
}

.portfolio-item {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
  position: relative;
}

.portfolio-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-medium);
  border-color: var(--primary-color);
}

.portfolio-image {
  position: relative;
  height: 200px;
  overflow: hidden;
}

.portfolio-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

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

.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, 
    rgba(0, 102, 204, 0.9), 
    rgba(24, 144, 255, 0.9));
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 2rem;
  opacity: 0;
  transition: var(--transition);
}

.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-overlay h4 {
  font-size: 1.2rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: white;
}

.portfolio-overlay p {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 1rem;
  line-height: 1.5;
  font-size: 0.875rem;
}

.portfolio-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: rgba(255, 255, 255, 0.2);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.3);
  border-radius: 50%;
  color: white;
  text-decoration: none;
  transition: var(--transition);
}

.portfolio-link:hover {
  background: rgba(255, 255, 255, 0.3);
  transform: scale(1.1);
}

/* Contact Section */
.contact-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.contact-item:hover {
  border-color: var(--primary-color);
  transform: translateY(-2px);
  box-shadow: var(--shadow-light);
}

.contact-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-color);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-icon i {
  font-size: 1.2rem;
  color: white;
}

.contact-text h4 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
  color: var(--text-primary);
  font-weight: 600;
}

.contact-text p {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* Form Styles */
.contact-form {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
  margin-bottom: 1rem;
}

.form-group {
  position: relative;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem;
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: var(--radius-md);
  color: var(--text-primary);
  font-size: 0.875rem;
  font-family: inherit;
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form-group label {
  position: absolute;
  top: 0.75rem;
  left: 0.75rem;
  color: var(--text-muted);
  font-size: 0.875rem;
  transition: var(--transition);
  pointer-events: none;
  background: var(--bg-secondary);
  padding: 0 0.25rem;
}

.form-group input:focus + label,
.form-group input:not(:placeholder-shown) + label,
.form-group select:focus + label,
.form-group select:not([value=""]) + label,
.form-group textarea:focus + label,
.form-group textarea:not(:placeholder-shown) + label {
  top: -0.5rem;
  left: 0.5rem;
  font-size: 0.75rem;
  color: var(--primary-color);
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-light);
  padding: 3rem 0 2rem;
  margin-top: 4rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 1rem;
}

.footer-logo img {
  width: 32px;
  height: 32px;
  object-fit: contain;
}

.footer-logo span {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
}

.footer-description {
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1rem;
  font-size: 0.875rem;
}

.footer-title {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
  font-size: 0.875rem;
}

.footer-links a:hover {
  color: var(--primary-color);
}

.footer-contact p {
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.footer-contact i {
  color: var(--primary-color);
  width: 16px;
}

.footer-bottom {
  border-top: 1px solid var(--border-light);
  padding-top: 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: 0.875rem;
}

.footer-bottom a {
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
}

.footer-bottom a:hover {
  color: var(--primary-color);
  text-decoration: underline;
}

/* Animations */
@keyframes float {
  0%, 100% { 
    transform: translateY(0px) rotate(0deg); 
  }
  33% { 
    transform: translateY(-15px) rotate(1deg); 
  }
  66% { 
    transform: translateY(-5px) rotate(-1deg); 
  }
}

@keyframes pulse {
  0%, 100% { 
    transform: scale(1); 
    opacity: 0.8; 
  }
  50% { 
    transform: scale(1.05); 
    opacity: 1; 
  }
}

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

@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

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

@keyframes shimmer {
  0% {
    background-position: -468px 0;
  }
  100% {
    background-position: 468px 0;
  }
}

/* Responsive Design */
@media (max-width: 1024px) {
  .hero-container,
  .about-content,
  .contact-content {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
  
  .services-grid,
  .portfolio-grid {
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100vh;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: center;
    align-items: center;
    transition: var(--transition);
    z-index: 1000;
    border: none;
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-toggle {
    display: flex;
  }
  
  .hero-container {
    text-align: center;
  }
  
  .hero-buttons {
    justify-content: center;
  }
  
  .services-grid,
  .portfolio-grid {
    grid-template-columns: 1fr;
  }
  
  .floating-card {
    display: none;
  }
  
  .portfolio-filter {
    gap: 0.5rem;
  }
  
  .filter-btn {
    padding: 0.4rem 0.8rem;
    font-size: 0.8rem;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }
  
  .hero {
    padding: 6rem 0 2rem;
  }
  
  .section {
    padding: 3rem 0;
  }
  
  .hero-buttons {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 280px;
  }
  
  .contact-form {
    padding: 1rem;
  }
  
  .service-card,
  .contact-item {
    padding: 1.5rem;
  }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.opacity-0 { opacity: 0; }
.opacity-50 { opacity: 0.5; }
.opacity-100 { opacity: 1; }

/* Loading and Animation States */
.animate-in { animation: fadeInUp 0.6s ease-out forwards; }
.animate-left { animation: fadeInLeft 0.6s ease-out forwards; }
.animate-right { animation: fadeInRight 0.6s ease-out forwards; }

/* Social Links */
.social-links {
  display: flex;
  gap: 1rem;
}

.social-link {
  width: 40px;
  height: 40px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-medium);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  text-decoration: none;
  transition: var(--transition);
}

.social-link:hover {
  background: var(--primary-color);
  color: white;
  border-color: var(--primary-color);
  transform: translateY(-2px);
}

/* Modern Animations */