:root {
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --text-color: #333333;
    --text-light: #666666;
    --background-color: #ffffff;
    --background-alt: #f8fafc;
    --border-color: #e2e8f0;
    --card-background: #ffffff;
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --success-color: #10b981;
    --error-color: #ef4444;
  }
  
  .dark-theme {
    --primary-color: #3b82f6;
    --primary-hover: #60a5fa;
    --text-color: #f8fafc;
    --text-light: #cbd5e1;
    --background-color: #0f172a;
    --background-alt: #1e293b;
    --border-color: #334155;
    --card-background: #1e293b;
    --card-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2), 0 2px 4px -1px rgba(0, 0, 0, 0.1);
    --success-color: #10b981;
    --error-color: #ef4444;
  }
  
  * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
  }

  html {
    scroll-behavior: smooth;
  }
  
  body {
    font-family: "Inter", sans-serif;
    color: var(--text-color);
    background-color: var(--background-color);
    line-height: 1.6;
    transition: background-color 0.3s ease, color 0.3s ease;
  }
  
  .container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
  }
  
  /* Header & Navigation */
  header {
    background-color: var(--background-color);
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color 0.3s ease;
  }
  
  nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px 0;
  }
  
  .logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    font-size: 18px;
  }
  
  .logo img {
    height: 32px;
  }
  
  .nav-links {
    display: flex;
    gap: 24px;
  }
  
  .nav-links a {
    color: var(--text-color);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
  }
  
  .nav-links a:hover {
    color: var(--primary-color);
  }
  
  .github-link {
    display: flex;
    align-items: center;
    gap: 6px;
  }
  
  .theme-toggle {
    background: none;
    border: none;
    cursor: pointer;
    color: var(--text-color);
    display: flex;
    align-items: center;
    justify-content: center;
  }
  
  .theme-toggle .sun-icon {
    display: none;
  }
  
  .theme-toggle .moon-icon {
    display: block;
  }
  
  .dark-theme .theme-toggle .sun-icon {
    display: block;
  }
  
  .dark-theme .theme-toggle .moon-icon {
    display: none;
  }
  
  /* Hero Section */
  .hero {
    padding: 80px 0;
    background-color: var(--background-alt);
    transition: background-color 0.3s ease;
  }
  
  .hero .container {
    display: flex;
    align-items: center;
    gap: 40px;
  }
  
  .hero-content {
    flex: 1;
  }
  
  .hero-image {
    flex: 1;
    display: flex;
    justify-content: center;
  }
  
  .hero-image img {
    max-width: 100%;
    border-radius: 8px;
    box-shadow: var(--card-shadow);
  }
  
  h1 {
    font-size: 48px;
    line-height: 1.2;
    margin-bottom: 24px;
    color: var(--text-color);
  }
  
  .hero p {
    font-size: 18px;
    color: var(--text-light);
    margin-bottom: 32px;
  }
  
  .cta-buttons {
    display: flex;
    gap: 16px;
  }
  
  .primary-button {
    display: inline-block;
    background-color: var(--primary-color);
    color: white;
    padding: 12px 24px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    transition: background-color 0.2s;
  }
  
  .primary-button:hover {
    background-color: var(--primary-hover);
  }
  
  .secondary-button {
    display: inline-block;
    background-color: transparent;
    color: var(--text-color);
    padding: 12px 24px;
    border-radius: 6px;
    text-decoration: none;
    font-weight: 500;
    border: 1px solid var(--border-color);
    transition: background-color 0.2s, border-color 0.2s;
  }
  
  .secondary-button:hover {
    background-color: var(--background-alt);
    border-color: var(--text-light);
  }
  
  /* Features Section */
  .features {
    padding: 80px 0;
  }
  
  h2 {
    font-size: 36px;
    text-align: center;
    margin-bottom: 48px;
    color: var(--text-color);
  }
  
  .features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 32px;
  }
  
  .feature-card {
    background-color: var(--card-background);
    border-radius: 8px;
    padding: 32px;
    box-shadow: var(--card-shadow);
    transition: transform 0.3s ease, box-shadow 0.3s ease, background-color 0.3s ease;
  }
  
  .feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  }
  
  .feature-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 12px;
    margin-bottom: 24px;
  }
  
  .feature-card h3 {
    font-size: 20px;
    margin-bottom: 16px;
    color: var(--text-color);
  }
  
  .feature-card p {
    color: var(--text-light);
  }
  
  /* How It Works Section */
  .how-it-works {
    padding: 80px 0;
    background-color: var(--background-alt);
    transition: background-color 0.3s ease;
  }
  
  .steps {
    display: flex;
    flex-wrap: wrap;
    gap: 24px;
    justify-content: center;
  }
  
  .step {
    flex: 1;
    min-width: 200px;
    max-width: 250px;
    text-align: center;
    padding: 24px;
    background-color: var(--card-background);
    border-radius: 8px;
    box-shadow: var(--card-shadow);
    transition: background-color 0.3s ease;
  }
  
  .step-number {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 48px;
    height: 48px;
    background-color: var(--primary-color);
    color: white;
    border-radius: 50%;
    font-weight: 600;
    font-size: 20px;
    margin: 0 auto 16px;
  }
  
  .step h3 {
    font-size: 18px;
    margin-bottom: 12px;
    color: var(--text-color);
  }
  
  .step p {
    color: var(--text-light);
    font-size: 14px;
  }
  
  /* FAQ Section */
  .faq {
    padding: 80px 0;
  }
  
  .accordion {
    max-width: 800px;
    margin: 0 auto;
  }
  
  .accordion-item {
    border-bottom: 1px solid var(--border-color);
    transition: border-color 0.3s ease;
  }
  
  .accordion-header {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 0;
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    color: var(--text-color);
    font-size: 18px;
    font-weight: 500;
    transition: color 0.3s ease;
  }
  
  .accordion-header:hover {
    color: var(--primary-color);
  }
  
  .accordion-icon {
    transition: transform 0.3s ease;
  }
  
  .accordion-item.active .accordion-icon {
    transform: rotate(180deg);
  }
  
  .accordion-content {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
  }
  
  .accordion-item.active .accordion-content {
    max-height: 200px;
    padding-bottom: 20px;
  }
  
  .accordion-content p {
    color: var(--text-light);
  }
  
  /* Footer */
  footer {
    background-color: var(--background-alt);
    padding: 60px 0 20px;
    transition: background-color 0.3s ease;
  }
  
  .footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 40px;
  }
  
  .footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
  }
  
  .footer-logo img {
    height: 32px;
  }
  
  .footer-links {
    display: flex;
    gap: 24px;
  }
  
  .footer-links a {
    color: var(--text-color);
    text-decoration: none;
    transition: color 0.2s;
  }
  
  .footer-links a:hover {
    color: var(--primary-color);
  }
  
  .footer-bottom {
    text-align: center;
    padding-top: 20px;
    border-top: 1px solid var(--border-color);
    color: var(--text-light);
    font-size: 14px;
    transition: border-color 0.3s ease;
  }
  
  /* Responsive Design */
  @media (max-width: 768px) {
    .hero .container {
      flex-direction: column;
    }
  
    h1 {
      font-size: 36px;
    }
  
    .hero p {
      font-size: 16px;
    }
  
    .footer-content {
      flex-direction: column;
      gap: 24px;
    }
  }
  
  @media (max-width: 576px) {
    .nav-links {
      display: none;
    }
  
    .cta-buttons {
      flex-direction: column;
    }
  
    h1 {
      font-size: 28px;
    }
  
    h2 {
      font-size: 24px;
    }
  }