/* CSS Custom Properties for Theme Variables */
:root {
  /* Dark Theme Colors */
  --bg-primary: #000000;
  --bg-secondary: #0a0a0a;
  --bg-tertiary: #1a1a1a;
  --text-primary: #ffffff;
  --text-secondary: #cccccc;
  --text-muted: #999999;
  --accent-primary: #ff6b35;
  --accent-secondary: #ff8c42;
  --border-color: #333333;
  --shadow-color: rgba(255, 107, 53, 0.1);

  /* Light Theme Colors */
  --light-bg-primary: #ffffff;
  --light-bg-secondary: #f8f9fa;
  --light-bg-tertiary: #e9ecef;
  --light-text-primary: #212529;
  --light-text-secondary: #495057;
  --light-text-muted: #6c757d;
  --light-accent-primary: #ff6b35;
  --light-accent-secondary: #ff8c42;
  --light-border-color: #dee2e6;
  --light-shadow-color: rgba(255, 107, 53, 0.1);
}

/* Light Theme */
[data-theme="light"] {
  --bg-primary: var(--light-bg-primary);
  --bg-secondary: var(--light-bg-secondary);
  --bg-tertiary: var(--light-bg-tertiary);
  --text-primary: var(--light-text-primary);
  --text-secondary: var(--light-text-secondary);
  --text-muted: var(--light-text-muted);
  --accent-primary: var(--light-accent-primary);
  --accent-secondary: var(--light-accent-secondary);
  --border-color: var(--light-border-color);
  --shadow-color: var(--light-shadow-color);
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
}

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

/* Header & Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  z-index: 1000;
  backdrop-filter: blur(10px);
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 2rem;
  max-width: 1200px;
  margin: 0 auto;
}

.nav-left {
  display: flex;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
  color: var(--text-primary);
}

.logo-icon {
  width: 24px;
  height: 24px;
  color: var(--accent-primary);
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 600;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.theme-toggle {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 0.5rem;
  border-radius: 0.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
}

.theme-toggle:hover {
  background-color: var(--bg-secondary);
  border-color: var(--accent-primary);
}

.theme-icon {
  width: 16px;
  height: 16px;
  transition: opacity 0.3s ease;
}

[data-theme="light"] .theme-icon-light {
  display: none;
}

[data-theme="dark"] .theme-icon-dark,
:root .theme-icon-light {
  display: none;
}

[data-theme="light"] .theme-icon-dark {
  display: none;
}

/* Buttons */
.btn {
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  border: none;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.3s ease;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

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

.btn-primary:hover {
  background-color: var(--accent-secondary);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px var(--shadow-color);
}

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

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

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

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

/* Ensure anchor buttons behave like buttons */
.btn[href] {
   display: inline-flex;
   align-items: center;
   justify-content: center;
   text-decoration: none;
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1rem;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
  display: none;
  flex-direction: column;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
}

.mobile-menu-toggle span {
  width: 20px;
  height: 2px;
  background-color: var(--text-primary);
  margin: 2px 0;
  transition: 0.3s;
}

.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(-5px, -5px);
}

/* Mobile Menu */
@media (max-width: 768px) {
  .nav.mobile-menu-open {
    flex-direction: column;
    align-items: flex-start;
  }

  .nav.mobile-menu-open .nav-right {
    width: 100%;
    flex-direction: column;
    align-items: stretch;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
  }

  .nav.mobile-menu-open .nav-right .btn {
    display: flex;
    width: 100%;
  }

  .nav.mobile-menu-open .theme-toggle {
    width: 100%;
    justify-content: center;
  }
}

/* Main Content */
main {
  margin-top: 80px;
}

/* Hero Section */
.hero {
  padding: 4rem 0 8rem;
  background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-secondary) 100%);
  position: relative;
  overflow: hidden;
}

.hero-content {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.highlight {
  color: var(--accent-primary);
}

.hero-description {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.platform-tabs {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-top: 2rem;
}

.platform-tab {
  padding: 0.75rem 1.5rem;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  border-radius: 0.5rem;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.3s ease;
}

.platform-tab.active,
.platform-tab:hover {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  border-color: var(--accent-primary);
}

.code-example {
  background-color: var(--bg-secondary);
  border-radius: 0.75rem;
  margin: 2rem auto;
  max-width: 500px;
  overflow: hidden;
  border: 1px solid var(--border-color);
}

.code-header {
  background-color: var(--bg-tertiary);
  padding: 0.75rem 1rem;
  border-bottom: 1px solid var(--border-color);
}

.code-dots {
  display: flex;
  gap: 0.5rem;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--border-color);
}

.dot:first-child {
  background-color: #ff5f57;
}

.dot:nth-child(2) {
  background-color: #ffbd2e;
}

.dot:nth-child(3) {
  background-color: #28ca42;
}

.code-content {
  padding: 1rem;
}

.code-content pre {
  margin: 0;
  color: var(--text-primary);
  font-family: 'Monaco', 'Menlo', 'Ubuntu Mono', monospace;
  font-size: 0.875rem;
}

.code-content code {
  background: none;
  padding: 0;
}

/* Products Section */
.products {
  padding: 6rem 0;
  background-color: var(--bg-primary);
}

.section-header {
  text-align: center;
  margin-bottom: 4rem;
}

.section-header h2 {
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.section-header p {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 600px;
  margin: 0 auto;
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.product-card {
  background-color: var(--bg-secondary);
  padding: 2rem;
  border-radius: 1rem;
  border: 1px solid var(--border-color);
  transition: all 0.3s ease;
}

.product-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
  border-color: var(--accent-primary);
}

.product-card h3 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text-primary);
}

.product-card p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

/* Industries Section */
.industries {
  padding: 6rem 0;
  background-color: var(--bg-secondary);
}

.industries-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.industry-item {
  text-align: center;
  padding: 1.5rem;
}

.industry-item h4 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

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

/* CTA Section */
.cta {
   padding: 6rem 0;
   background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
   color: white;
   text-align: center;
}

.cta h2 {
   font-size: 2.5rem;
   font-weight: 700;
   margin-bottom: 1rem;
}

.cta p {
   font-size: 1.125rem;
   margin-bottom: 2rem;
   opacity: 0.9;
}

/* Contact Section */
.contact {
   padding: 6rem 0;
   background-color: var(--bg-primary);
}

.contact-content {
   display: grid;
   grid-template-columns: 2fr 1fr;
   gap: 4rem;
   align-items: start;
}

.contact-form {
   background-color: var(--bg-secondary);
   padding: 2.5rem;
   border-radius: 1rem;
   border: 1px solid var(--border-color);
}

.form-group {
   margin-bottom: 1.5rem;
}

.form-group label {
   display: block;
   margin-bottom: 0.5rem;
   color: var(--text-primary);
   font-weight: 500;
   font-size: 0.875rem;
}

.form-group input,
.form-group textarea {
   width: 100%;
   padding: 0.75rem 1rem;
   background-color: var(--bg-tertiary);
   border: 1px solid var(--border-color);
   border-radius: 0.5rem;
   color: var(--text-primary);
   font-size: 1rem;
   font-family: inherit;
   transition: all 0.3s ease;
}

.form-group input:focus,
.form-group textarea:focus {
   outline: none;
   border-color: var(--accent-primary);
   box-shadow: 0 0 0 3px rgba(255, 107, 53, 0.1);
}

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

.form-group input::placeholder,
.form-group textarea::placeholder {
   color: var(--text-muted);
}

.contact-info {
   background-color: var(--bg-secondary);
   padding: 2.5rem;
   border-radius: 1rem;
   border: 1px solid var(--border-color);
   height: fit-content;
}

.contact-info h3 {
   font-size: 1.25rem;
   font-weight: 600;
   margin-bottom: 1.5rem;
   color: var(--text-primary);
}

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

.contact-item strong {
   color: var(--text-primary);
   display: block;
   margin-bottom: 0.25rem;
}

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

.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: 0.5rem;
  margin-bottom: 1rem;
}

.footer-logo .logo-icon {
  color: var(--accent-primary);
}

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

.footer-section ul {
  list-style: none;
}

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

.footer-section ul li a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.3s ease;
}

.footer-section ul li a:hover {
  color: var(--accent-primary);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

.footer-bottom p {
  color: var(--text-muted);
  font-size: 0.875rem;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  transition: color 0.3s ease;
}

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

/* Responsive Design */
@media (max-width: 768px) {
  .nav-right .btn {
    display: none;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-description {
    font-size: 1.125rem;
  }

  .platform-tabs {
    flex-direction: column;
    align-items: center;
  }

  .hero-actions {
    flex-direction: column;
    align-items: center;
  }

  .products-grid {
    grid-template-columns: 1fr;
  }

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

  .footer-bottom {
     flex-direction: column;
     gap: 1rem;
     text-align: center;
  }

  .contact-content {
     grid-template-columns: 1fr;
     gap: 2rem;
  }

  .contact-form,
  .contact-info {
     padding: 1.5rem;
  }

  .container {
     padding: 0 1rem;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 2rem;
  }

  .industries-grid {
    grid-template-columns: 1fr;
  }
}

/* Smooth scrolling */
html {
  scroll-behavior: smooth;
}

/* Focus styles for accessibility */
.btn:focus,
.theme-toggle:focus,
.platform-tab:focus {
  outline: 2px solid var(--accent-primary);
  outline-offset: 2px;
}

/* Animation for theme transition */
* {
  transition: background-color 0.3s ease, color 0.3s ease, border-color 0.3s ease;
}