/* Global Styles with Modern Variables and Reset */
:root {
    --primary: #6d28d9;
    --primary-dark: #5b21b6;
    --primary-light: #8b5cf6;
    --accent: #10b981;
    --accent-dark: #059669;
    --neutral-900: #111827;
    --neutral-800: #1f2937;
    --neutral-700: #374151;
    --neutral-100: #f3f4f6;
    --neutral-50: #f9fafb;
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2.5rem;
    --spacing-xl: 4rem;
    --border-radius-sm: 0.375rem;
    --border-radius-md: 0.75rem;
    --border-radius-lg: 1.25rem;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --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);
  }
  
  *, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
  }
  
  body {
    font-family: 'Poppins', sans-serif;
    text-align: center;
    background: linear-gradient(135deg, var(--neutral-900), var(--primary-dark), var(--neutral-800));
    color: var(--neutral-100);
    line-height: 1.6;
    overflow-x: hidden;
  }
  
  .container {
    width: 90%;
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-md);
  }
  
  /* Modern Navigation Bar with Improved Spacing */
  header {
    background: rgba(17, 24, 39, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    padding: var(--spacing-md) var(--spacing-sm);
    border-bottom: 2px solid var(--glass-border);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
  }
  
  header.scrolled {
    padding: var(--spacing-xs) var(--spacing-sm);
    background: rgba(17, 24, 39, 0.95);
  }
  
  nav {
    display: flex;
    justify-content: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
  }
  
  nav a {
    color: var(--neutral-100);
    text-decoration: none;
    font-weight: 600;
    font-size: 1.125rem;
    transition: var(--transition);
    position: relative;
    padding: var(--spacing-xs) var(--spacing-sm);
  }
  
  nav a::after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: var(--transition);
    transform: translateX(-50%);
  }
  
  nav a:hover {
    color: var(--accent);
  }
  
  nav a:hover::after {
    width: 80%;
  }
  
  /* Hero Section with Enhanced Spacing */
  .hero {
    margin-top: 6rem;
    padding: var(--spacing-xl) var(--spacing-md);
    text-align: center;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 90vh;
    position: relative;
    overflow: hidden;
  }
  
  .hero::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(139, 92, 246, 0.15), transparent 60%);
    z-index: -1;
  }
  
  .hero h2 {
    font-size: clamp(2rem, 5vw, 3.5rem);
    font-weight: bold;
    text-transform: uppercase;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-md);
    background: linear-gradient(90deg, var(--primary-light), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    position: relative;
  }
  
  .hero p {
    font-size: clamp(1.125rem, 2vw, 1.25rem);
    margin-bottom: var(--spacing-lg);
    max-width: 800px;
    opacity: 0.9;
  }
  
  .btn {
    background: var(--accent);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-md);
    color: white;
    font-weight: bold;
    text-decoration: none;
    font-size: 1.125rem;
    transition: var(--transition);
    border: none;
    cursor: pointer;
    display: inline-block;
    box-shadow: var(--shadow-md);
    position: relative;
    overflow: hidden;
    z-index: 1;
  }
  
  .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: var(--transition);
    z-index: -1;
  }
  
  .btn:hover {
    background: var(--accent-dark);
    transform: translateY(-3px);
  }
  
  .btn:hover::before {
    left: 100%;
  }
  
  /* Features Section with Card Design */
  .features {
    margin: var(--spacing-xl) auto;
    padding: var(--spacing-lg) var(--spacing-md);
    background: rgba(31, 41, 55, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 1200px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--glass-border);
  }
  
  .features h2 {
    font-size: clamp(1.5rem, 3vw, 2rem);
    margin-bottom: var(--spacing-lg);
    position: relative;
    display: inline-block;
  }
  
  .features h2::after {
    content: "";
    position: absolute;
    bottom: -10px;
    left: 50%;
    width: 50px;
    height: 3px;
    background: var(--accent);
    transform: translateX(-50%);
    border-radius: 3px;
  }
  
  .feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
  }
  
  .feature {
    background: rgba(55, 65, 81, 0.5);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
    padding: var(--spacing-lg) var(--spacing-md);
    border-radius: var(--border-radius-md);
    transition: var(--transition);
    border: 1px solid var(--glass-border);
    box-shadow: var(--shadow-sm);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-sm);
  }
  
  .feature:hover {
    transform: translateY(-5px);
    background: rgba(55, 65, 81, 0.7);
    box-shadow: var(--shadow-md);
  }
  
  /* Testimonials Section with Improved Layout */
  .testimonials {
    margin: var(--spacing-xl) auto;
    padding: var(--spacing-lg) var(--spacing-md);
  }
  
  .testimonial-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
  }
  
  .testimonial {
    background: rgba(31, 41, 55, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    padding: var(--spacing-lg) var(--spacing-md);
    border-radius: var(--border-radius-md);
    text-align: left;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--glass-border);
    position: relative;
  }
  
  .testimonial::before {
    content: """;
    position: absolute;
    top: 20px;
    left: 20px;
    font-size: 4rem;
    color: var(--primary-light);
    opacity: 0.3;
    line-height: 0;
  }
  
  /* Video Player with Enhanced Styling */
  .video-wrapper {
    margin: var(--spacing-xl) auto;
    display: flex;
    justify-content: center;
    width: 90%;
    max-width: 1000px;
  }
  
  video {
    width: 100%;
    aspect-ratio: 16/9;
    border: 3px solid var(--primary-light);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
  }
  
  /* Chat Section with Modern Design */
  .chat-section {
    margin: var(--spacing-xl) auto;
    background: linear-gradient(135deg, rgba(31, 41, 55, 0.8), rgba(55, 65, 81, 0.8));
    padding: var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 800px;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--glass-border);
  }
  
  .chat-box {
    height: 300px;
    overflow-y: auto;
    background: rgba(17, 24, 39, 0.7);
    padding: var(--spacing-md);
    border-radius: var(--border-radius-md);
    text-align: left;
    margin-bottom: var(--spacing-md);
    border: 1px solid var(--glass-border);
    scrollbar-width: thin;
    scrollbar-color: var(--primary-light) var(--neutral-700);
  }
  
  .chat-box::-webkit-scrollbar {
    width: 8px;
  }
  
  .chat-box::-webkit-scrollbar-track {
    background: var(--neutral-700);
    border-radius: 10px;
  }
  
  .chat-box::-webkit-scrollbar-thumb {
    background: var(--primary-light);
    border-radius: 10px;
  }
  
  .chat-box p {
    margin: 0.75rem 0;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-sm);
    background: rgba(55, 65, 81, 0.5);
    max-width: 80%;
  }
  
  .chat-box .user-message {
    background: rgba(107, 40, 217, 0.4);
    align-self: flex-end;
    margin-left: auto;
  }
  
  .chat-input-container {
    display: flex;
    gap: var(--spacing-sm);
  }
  
  #chatInput {
    flex: 1;
    padding: var(--spacing-sm);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--glass-border);
    background: rgba(31, 41, 55, 0.7);
    color: var(--neutral-100);
    font-size: 1rem;
  }
  
  button {
    background: var(--accent);
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--border-radius-md);
    color: white;
    font-weight: bold;
    cursor: pointer;
    transition: var(--transition);
  }
  
  button:hover {
    background: var(--accent-dark);
    transform: scale(1.05);
  }
  
  /* Call to Action with Gradient */
  .cta {
    margin: var(--spacing-xl) auto;
    padding: var(--spacing-xl) var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    border-radius: var(--border-radius-lg);
    width: 90%;
    max-width: 1000px;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
  }
  
  .cta::before {
    content: "";
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 10%, transparent 70%);
    animation: rotate 20s linear infinite;
    z-index: 0;
  }
  
  @keyframes rotate {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
  }
  
  .cta > * {
    position: relative;
    z-index: 1;
  }
  
  .cta .btn {
    background: white;
    color: var(--primary);
    margin-top: var(--spacing-md);
  }
  
  .cta .btn:hover {
    background: var(--neutral-50);
  }
  
  /* Modern Contact Form */
  .contact-container {
    background: linear-gradient(135deg, rgba(91, 33, 182, 0.8), rgba(107, 40, 217, 0.8));
    color: white;
    padding: var(--spacing-xl) var(--spacing-lg);
    border-radius: var(--border-radius-lg);
    text-align: center;
    width: 90%;
    max-width: 800px;
    margin: var(--spacing-xl) auto;
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--glass-border);
  }
  
  .contact-container h2 {
    font-size: clamp(1.5rem, 3vw, 1.75rem);
    margin-bottom: var(--spacing-md);
  }
  
  .contact-container p {
    font-size: 1rem;
    margin-bottom: var(--spacing-lg);
    opacity: 0.9;
  }
  
  .contact-container form {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
    width: 100%;
    max-width: 600px;
    margin: 0 auto;
  }
  
  .form-group {
    position: relative;
    width: 100%;
  }
  
  .contact-container input,
  .contact-container textarea {
    width: 100%;
    padding: var(--spacing-sm);
    background: rgba(17, 24, 39, 0.5);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    font-size: 1rem;
    color: var(--neutral-100);
    transition: var(--transition);
  }
  
  .contact-container input:focus,
  .contact-container textarea:focus {
    outline: none;
    border-color: var(--accent);
    background: rgba(17, 24, 39, 0.7);
  }
  
  .contact-container textarea {
    height: 150px;
    resize: vertical;
  }
  
  .contact-container button {
    background: var(--accent);
    align-self: center;
    margin-top: var(--spacing-sm);
  }
  
  /* Footer with Modern Styling */
  footer {
    text-align: center;
    padding: var(--spacing-lg) var(--spacing-md);
    background: linear-gradient(to right, var(--neutral-900), var(--neutral-800));
    color: var(--neutral-100);
    margin-top: var(--spacing-xl);
    position: relative;
  }
  
  footer::before {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background: linear-gradient(to right, transparent, var(--primary-light), transparent);
  }
  
  /* Responsive Adjustments */
  @media (max-width: 768px) {
    :root {
      --spacing-xl: 3rem;
      --spacing-lg: 2rem;
    }
    
    nav {
      gap: var(--spacing-sm);
    }
    
    .testimonial-grid {
      grid-template-columns: 1fr;
    }
    
    .chat-section,
    .contact-container {
      width: 95%;
    }
  }
  
  @media (max-width: 480px) {
    :root {
      --spacing-lg: 1.5rem;
      --spacing-md: 1rem;
    }
    
    .hero {
      padding: var(--spacing-lg) var(--spacing-sm);
    }
    
    .feature-grid {
      grid-template-columns: 1fr;
    }
  }
  
  /* Animations and Effects */
  @keyframes fadeInUp {
    from {
      opacity: 0;
      transform: translateY(20px);
    }
    to {
      opacity: 1;
      transform: translateY(0);
    }
  }
  
  .fade-in-up {
    animation: fadeInUp 0.5s ease-out forwards;
  }
  
  /* Utility Classes */
  .text-gradient {
    background: linear-gradient(90deg, var(--primary-light), var(--accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
  }
  
  .glass {
    background: rgba(31, 41, 55, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
  }
  
  .hidden {
    display: none;
  }