/* ============================================
   DreamsWorks - Garment Accessories
   Main Stylesheet
   ============================================ */

/* CSS Variables */
:root {
  /* Background Colors */
  --bg-primary: #0a0a0f;
  --bg-secondary: #12121a;
  --bg-tertiary: #1a1a25;
  --bg-glass: rgba(255, 255, 255, 0.03);
  --bg-glass-hover: rgba(255, 255, 255, 0.06);
  
  /* Accent Colors */
  --accent-gold: #ffd700;
  --accent-gold-light: #ffed4e;
  --accent-cyan: #00d4ff;
  --accent-cyan-light: #80e9ff;
  --accent-purple: #a855f7;
  --accent-pink: #ec4899;
  --accent-gradient: linear-gradient(135deg, #00d4ff 0%, #a855f7 50%, #ec4899 100%);
  
  /* Text Colors */
  --text-primary: #ffffff;
  --text-secondary: #a0a0b0;
  --text-muted: #6b6b7b;
  
  /* Border Colors */
  --border-glow: rgba(0, 212, 255, 0.3);
  --border-subtle: rgba(255, 255, 255, 0.1);
  --border-hover: rgba(255, 255, 255, 0.2);
  
  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 8px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow: 0 0 30px rgba(0, 212, 255, 0.3);
  --shadow-gold: 0 0 30px rgba(255, 215, 0, 0.3);
  
  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-display: 'Poppins', var(--font-primary);
  --font-chinese: 'PingFang SC', 'Microsoft YaHei', 'Noto Sans SC', sans-serif;
  
  /* Font Sizes */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --text-4xl: 2.25rem;
  --text-5xl: 3rem;
  --text-6xl: 3.75rem;
  
  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;
  --space-24: 6rem;
  
  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-2xl: 1.5rem;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 350ms ease;
  --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
  
  /* Z-index */
  --z-dropdown: 100;
  --z-sticky: 200;
  --z-fixed: 300;
  --z-modal-backdrop: 400;
  --z-modal: 500;
  --z-popover: 600;
  --z-tooltip: 700;
}

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

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

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

body.zh {
  font-family: var(--font-chinese);
}

/* Selection */
::selection {
  background: var(--accent-cyan);
  color: var(--bg-primary);
}

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

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

::-webkit-scrollbar-thumb {
  background: var(--accent-cyan);
  border-radius: var(--radius-full);
}

::-webkit-scrollbar-thumb:hover {
  background: var(--accent-cyan-light);
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

h1 { font-size: var(--text-5xl); }
h2 { font-size: var(--text-4xl); }
h3 { font-size: var(--text-3xl); }
h4 { font-size: var(--text-2xl); }
h5 { font-size: var(--text-xl); }
h6 { font-size: var(--text-lg); }

p {
  color: var(--text-secondary);
  margin-bottom: var(--space-4);
}

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

a:hover {
  color: var(--accent-cyan-light);
}

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

/* Container */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.container-narrow {
  max-width: 960px;
}

/* Grid */
.grid {
  display: grid;
  gap: var(--space-6);
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-8 { grid-template-columns: repeat(8, 1fr); }

/* Flex */
.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* Section */
.section {
  padding: var(--space-24) 0;
  position: relative;
}

/* Add top padding to first section to account for fixed navbar */
body:not(.home) .section:first-of-type,
body > .section:first-of-type {
  padding-top: calc(var(--space-24) + 80px);
}

.section-title {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-title h2 {
  margin-bottom: var(--space-4);
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-title p {
  font-size: var(--text-lg);
  max-width: 600px;
  margin: 0 auto;
}

/* Glass Card */
.glass-card {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  transition: all var(--transition-base);
}

.glass-card:hover {
  background: var(--bg-glass-hover);
  border-color: var(--border-hover);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  font-family: var(--font-display);
  font-size: var(--text-base);
  font-weight: 600;
  text-decoration: none;
  border: none;
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.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 0.5s;
}

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

.btn-primary {
  background: var(--accent-gradient);
  color: var(--text-primary);
  box-shadow: 0 4px 15px rgba(0, 212, 255, 0.4);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(0, 212, 255, 0.5);
}

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

.btn-secondary:hover {
  border-color: var(--accent-cyan);
  background: rgba(0, 212, 255, 0.1);
}

.btn-gold {
  background: linear-gradient(135deg, var(--accent-gold) 0%, var(--accent-gold-light) 100%);
  color: var(--bg-primary);
  box-shadow: 0 4px 15px rgba(255, 215, 0, 0.4);
}

.btn-gold:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 25px rgba(255, 215, 0, 0.5);
}

/* Navigation */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  padding: var(--space-4) 0;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-subtle);
  transition: all var(--transition-base);
}

.navbar.scrolled {
  padding: var(--space-3) 0;
  background: rgba(10, 10, 15, 0.95);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-primary);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--accent-gradient);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-lg);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-10);
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  font-weight: 600;
  font-size: 1.125rem;
  position: relative;
  padding: var(--space-2) var(--space-1);
  letter-spacing: 0.02em;
  transition: all var(--transition-base);
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 50%;
  transform: translateX(-50%);
  width: 0;
  height: 3px;
  background: var(--accent-gradient);
  border-radius: 2px;
  transition: all var(--transition-base);
}

.nav-links a:hover {
  color: var(--text-primary);
  text-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
}

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

.nav-links a.active {
  color: var(--accent-primary);
}

.nav-contact {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

/* Language Switcher */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  padding: var(--space-1);
}

.lang-btn {
  padding: var(--space-2) var(--space-3);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-muted);
  background: transparent;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.lang-btn:hover {
  color: var(--text-secondary);
}

.lang-btn.active {
  color: var(--text-primary);
  background: var(--accent-gradient);
}

/* Mobile Menu */
.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  background: transparent;
  border: none;
  cursor: pointer;
}

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

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding-top: 80px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}

.hero-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.hero-gradient {
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(0, 212, 255, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(168, 85, 247, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 50% 100%, rgba(236, 72, 153, 0.1) 0%, transparent 50%);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
  padding: 0 var(--space-6);
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  color: var(--accent-cyan);
  margin-bottom: var(--space-6);
}

.hero-badge::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--accent-cyan);
  border-radius: var(--radius-full);
  animation: pulse 2s infinite;
}

.hero h1 {
  font-size: clamp(var(--text-4xl), 8vw, var(--text-6xl));
  margin-bottom: var(--space-6);
  line-height: 1.1;
}

.hero h1 .gradient-text {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-description {
  font-size: var(--text-xl);
  color: var(--text-secondary);
  margin-bottom: var(--space-8);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero-stats {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-12);
  margin-top: var(--space-16);
  padding-top: var(--space-8);
  border-top: 1px solid var(--border-subtle);
}

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

.stat-value {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 700;
  color: var(--accent-gold);
}

.stat-label {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-top: var(--space-1);
}

/* Product Cards */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.product-card {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
  cursor: pointer;
  position: relative;
}

.product-card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--accent-gradient);
  opacity: 0;
  transition: opacity var(--transition-base);
  z-index: 0;
}

.product-card:hover {
  transform: translateY(-8px) scale(1.02);
  border-color: var(--border-glow);
  box-shadow: var(--shadow-glow);
}

.product-card:hover::before {
  opacity: 0.05;
}

.product-image {
  position: relative;
  aspect-ratio: 4/3;
  overflow: hidden;
}

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

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

.product-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(10, 10, 15, 0.9) 0%, transparent 50%);
  display: flex;
  align-items: flex-end;
  padding: var(--space-4);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.product-card:hover .product-overlay {
  opacity: 1;
}

.product-content {
  padding: var(--space-6);
  position: relative;
  z-index: 1;
}

.product-category {
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent-cyan);
  margin-bottom: var(--space-2);
}

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

.product-subtitle {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-bottom: var(--space-4);
}

.product-description {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: var(--space-4);
}

.product-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--accent-cyan);
  transition: gap var(--transition-fast);
}

.product-link:hover {
  gap: var(--space-3);
}

/* Features Section */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-6);
}

.feature-card {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  text-align: center;
  transition: all var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-cyan);
  box-shadow: 0 0 30px rgba(0, 212, 255, 0.2);
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-6);
  background: var(--accent-gradient);
  border-radius: var(--radius-xl);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-2xl);
}

.feature-title {
  font-size: var(--text-xl);
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.feature-description {
  font-size: var(--text-base);
  color: var(--text-secondary);
}

/* About Section */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.about-content h2 {
  margin-bottom: var(--space-6);
}

.about-content p {
  font-size: var(--text-lg);
  margin-bottom: var(--space-6);
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin-top: var(--space-8);
}

.about-image {
  position: relative;
}

.about-image img {
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-lg);
}

.about-image::before {
  content: '';
  position: absolute;
  inset: -20px;
  background: var(--accent-gradient);
  border-radius: var(--radius-2xl);
  opacity: 0.3;
  filter: blur(40px);
  z-index: -1;
}

/* Contact Section */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
}

.contact-info h3 {
  margin-bottom: var(--space-6);
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
  margin-top: var(--space-8);
}

.contact-method {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
}

.contact-icon {
  width: 48px;
  height: 48px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-xl);
  color: var(--accent-cyan);
  flex-shrink: 0;
}

.contact-details h4 {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.contact-details p {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  margin: 0;
}

.contact-form {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
}

.form-group {
  margin-bottom: var(--space-6);
}

.form-label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: var(--space-2);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  color: var(--text-primary);
  font-size: var(--text-base);
  transition: all var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--accent-cyan);
  box-shadow: 0 0 0 3px rgba(0, 212, 255, 0.1);
}

.form-textarea {
  min-height: 120px;
  resize: vertical;
}

/* Footer */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: var(--space-16) 0 var(--space-8);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-12);
  margin-bottom: var(--space-12);
}

.footer-brand p {
  color: var(--text-secondary);
  margin-top: var(--space-4);
  max-width: 300px;
}

.footer-title {
  font-size: var(--text-base);
  font-weight: 600;
  margin-bottom: var(--space-4);
  color: var(--text-primary);
}

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

.footer-links li {
  margin-bottom: var(--space-3);
}

.footer-links a {
  color: var(--text-secondary);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  border-top: 1px solid var(--border-subtle);
}

.footer-copyright {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

.footer-social {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.social-link {
  width: 40px;
  height: 40px;
  background: var(--bg-glass);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition-fast);
}

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

/* Animations */
@keyframes pulse {
  0%, 100% {
    opacity: 1;
    transform: scale(1);
  }
  50% {
    opacity: 0.5;
    transform: scale(1.2);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

@keyframes glow {
  0%, 100% {
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.3);
  }
  50% {
    box-shadow: 0 0 40px rgba(0, 212, 255, 0.5);
  }
}

.animate-float {
  animation: float 3s ease-in-out infinite;
}

.animate-glow {
  animation: glow 2s ease-in-out infinite;
}

/* Scroll Reveal */
.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Responsive */
@media (max-width: 1024px) {
  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: var(--space-12);
  }
  
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    flex-direction: column;
    padding: var(--space-6);
    gap: var(--space-6);
    border-top: 1px solid var(--border-subtle);
  }
  
  .nav-links.active {
    display: flex;
  }
  
  .nav-links a {
    font-size: 1.25rem;
    padding: var(--space-3) 0;
    text-align: center;
  }
  
  .nav-links a::after {
    display: none;
  }
  
  .mobile-menu-btn {
    display: flex;
  }
  
  .hero {
    padding-top: 100px;
    min-height: auto;
    padding-bottom: var(--space-12);
  }
  
  .hero h1 {
    font-size: var(--text-3xl);
  }
  
  .hero-description {
    font-size: var(--text-base);
  }
  
  .hero-stats {
    flex-direction: column;
    gap: var(--space-6);
    margin-top: var(--space-10);
  }
  
  .stat-value {
    font-size: var(--text-2xl);
  }
  
  .about-stats {
    grid-template-columns: 1fr;
  }
  
  .footer-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }
  
  .footer-brand p {
    max-width: 100%;
  }
  
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-4);
  }
  
  .section {
    padding: var(--space-16) 0;
  }
  
  .section-title h2 {
    font-size: var(--text-2xl);
  }
  
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }
  
  .product-card {
    padding: var(--space-4);
  }
  
  .product-title {
    font-size: var(--text-base);
  }
  
  .product-description {
    font-size: var(--text-sm);
  }
  
  .features-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-4);
  }
  
  .feature-card {
    padding: var(--space-6);
  }
  
  .feature-icon {
    width: 48px;
    height: 48px;
  }
  
  .feature-title {
    font-size: var(--text-base);
  }
  
  .contact-grid {
    grid-template-columns: 1fr;
  }
  
  .contact-form {
    padding: var(--space-6);
  }
  
  .nav-contact {
    gap: var(--space-2);
  }
  
  .email-badge {
    display: none;
  }
}

@media (max-width: 480px) {
  .hero-buttons {
    flex-direction: column;
    width: 100%;
  }
  
  .hero-buttons .btn {
    width: 100%;
  }
  
  .products-grid {
    grid-template-columns: 1fr;
  }
}

/* Utility Classes */
.text-center { text-align: center; }
.text-gradient {
  background: var(--accent-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.mt-4 { margin-top: var(--space-4); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-8 { margin-bottom: var(--space-8); }

.hidden { display: none; }
.visible { display: block; }

/* Back to Top Button */
.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 52px;
  height: 52px;
  background: var(--bg-glass);
  border: 2px solid var(--border-subtle);
  border-radius: 50%;
  color: var(--accent-primary);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  z-index: 999;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
  backdrop-filter: blur(10px);
}

.back-to-top:hover {
  background: var(--accent-gradient);
  border-color: transparent;
  color: white;
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 212, 255, 0.4);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top svg {
  transition: transform 0.3s ease;
}

.back-to-top:hover svg {
  transform: translateY(-2px);
}