:root {
    --theme-bg-color: #121212;
    --theme-text-color: #ffffff;
    --theme-accent-color: #00e6c3;
    --theme-secondary-accent: #4A90E2;
    --theme-button-primary: #00e6c3;
    --theme-button-secondary: #333333;
  }
  
  /* Base Styles */
  body {
    background-color: var(--theme-bg-color);
    color: var(--theme-text-color);
    font-family: 'Segoe UI', Tahoma, Verdana, sans-serif;
    overflow-x: hidden;
    position: relative;
  }
  
  /* Background Animation Elements */
  .background-elements {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
  }
  
  .floating-circle {
    position: absolute;
    border-radius: 50%;
    opacity: 0.2;
    background: radial-gradient(circle, var(--theme-accent-color) 0%, transparent 70%);
  }
  
  .circle-1 {
    width: 500px;
    height: 500px;
    top: -100px;
    right: -100px;
    animation: float 15s infinite ease-in-out;
  }
  
  .circle-2 {
    width: 300px;
    height: 300px;
    bottom: 5%;
    left: -50px;
    animation: float 20s infinite ease-in-out reverse;
  }
  
  .circle-3 {
    width: 200px;
    height: 200px;
    top: 40%;
    right: 10%;
    animation: float 18s infinite ease-in-out 1s;
  }
  
  .gear-shape {
    position: absolute;
    border-radius: 50%;
    border: 2px solid rgba(0, 230, 195, 0.2);
    background-color: rgba(0, 0, 0, 0.2);
  }
  
  .gear-shape::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 40%;
    height: 40%;
    background-color: rgba(0, 0, 0, 0.5);
    border-radius: 50%;
    border: 2px solid rgba(0, 230, 195, 0.3);
  }
  
  .gear-1 {
    width: 300px;
    height: 300px;
    bottom: 10%;
    right: 5%;
    animation: rotate 30s linear infinite;
  }
  
  .gear-2 {
    width: 200px;
    height: 200px;
    top: 30%;
    left: 5%;
    animation: rotate 20s linear infinite reverse;
  }
  
  @keyframes float {
    0%, 100% { transform: translate(0, 0); }
    50% { transform: translate(0, 30px); }
  }
  
  @keyframes rotate {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
  }
  
  /* Navigation */
  .navbar {
    /* Base background for all browsers */
    background-color: rgba(10, 18, 37, 0.95) !important;
    /* Modern browsers with backdrop-filter support */
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    transition: all 0.4s ease;
    padding: 15px 0;
  }
  
  /* Fallback for browsers without backdrop-filter support */
  @supports not ((backdrop-filter: blur(10px)) or (-webkit-backdrop-filter: blur(10px))) {
    .navbar {
      background-color: rgba(10, 18, 37, 0.98) !important;
    }
  }
  
  .navbar-brand img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--theme-accent-color);
    transition: all 0.3s ease;
  }
  
  .navbar-brand span {
    color: var(--theme-accent-color);
    font-weight: bold;
    margin-left: 10px;
    transition: all 0.3s ease;
  }
  
  .navbar-brand:hover img {
    transform: rotate(15deg);
    box-shadow: 0 0 15px rgba(0, 230, 195, 0.5);
  }
  
  .nav-item {
    position: relative;
    margin: 0 2px;
  }
  
  .nav-link {
    padding: 8px 15px !important;
    border-radius: 5px;
    transition: all 0.3s ease !important;
    position: relative;
  }
  
  .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    width: 0;
    height: 2px;
    background-color: var(--theme-accent-color);
    transition: all 0.3s ease;
    transform: translateX(-50%);
  }
  
  .nav-link:hover::after,
  .nav-link.active::after {
    width: 80%;
  }
  
  .nav-link:hover {
    background-color: rgba(0, 230, 195, 0.1);
    color: var(--theme-accent-color) !important;
  }
  
  /* Buttons */
  .btn {
    border-radius: 30px;
    padding: 10px 24px;
    font-weight: 600;
    transition: all 0.3s ease;
  }
  
  .btn-primary {
    background-color: var(--theme-button-primary);
    border-color: var(--theme-button-primary);
  }
  
  .btn-primary:hover {
    background-color: var(--theme-button-primary);
    border-color: var(--theme-button-primary);
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0, 230, 195, 0.3);
  }
  
  .btn-outline-light {
    border: 2px solid var(--theme-text-color);
  }
  
  .btn-outline-light:hover {
    background-color: var(--theme-text-color);
    color: var(--theme-bg-color);
    transform: translateY(-3px);
  }
  
  /* Hero Section */
  .hero-section {
    padding: 150px 0 80px;
    min-height: 100vh;
    position: relative;
    background: linear-gradient(to bottom, rgba(10, 18, 37, 0.9), rgba(18, 18, 18, 0.95));
  }
  
  .hero-content h1 {
    background: linear-gradient(to right, var(--theme-accent-color), var(--theme-secondary-accent));
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    font-weight: bold;
  }
  
  .hero-image {
    position: relative;
    height: 100%;
  }
  
  .icon-container {
    width: 250px;
    height: 250px;
    margin: 0 auto;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: radial-gradient(circle, rgba(0, 230, 195, 0.1) 0%, rgba(74, 144, 226, 0.05) 70%);
    border: 2px solid rgba(0, 230, 195, 0.3);
    position: relative;
    animation: pulse 4s infinite ease-in-out;
  }
  
  .icon-container i {
    color: var(--theme-accent-color);
  }
  
  @keyframes pulse {
    0%, 100% { transform: scale(1); box-shadow: 0 0 20px rgba(0, 230, 195, 0.3); }
    50% { transform: scale(1.05); box-shadow: 0 0 40px rgba(0, 230, 195, 0.5); }
  }
  
  /* Sections */
  section {
    padding: 80px 0;
  }
  
  .section-title {
    color: var(--theme-accent-color);
    margin-bottom: 10px;
  }
  
  /* Feature Cards */
  .features-section {
    background-color: rgba(10, 18, 37, 0.3);
  }
  
  .feature-card {
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    padding: 30px;
    text-align: center;
    transition: all 0.3s ease;
    border: 1px solid rgba(255, 255, 255, 0.1);
  }
  
  .feature-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    border-color: var(--theme-accent-color);
  }
  
  .icon-wrapper {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto;
    background-color: rgba(0, 230, 195, 0.1);
    color: var(--theme-accent-color);
    transition: all 0.3s ease;
  }
  
  .feature-card:hover .icon-wrapper {
    background-color: var(--theme-accent-color);
    color: #121212;
    transform: rotate(15deg);
  }
  
  .feature-card h3 {
    color: var(--theme-accent-color);
    margin: 20px 0;
    font-weight: 600;
  }
  
  /* Testimonials */
  .testimonials-section {
    background-color: rgba(18, 18, 18, 0.7);
  }
  
  .testimonial-card {
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.1);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
  }
  
  .testimonial-card:after {
    content: "";
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 4px;
    background: linear-gradient(to right, var(--theme-accent-color), var(--theme-secondary-accent));
    transform: scaleX(0);
    transform-origin: bottom left;
    transition: transform 0.3s ease;
  }
  
  .testimonial-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  }
  
  .testimonial-card:hover:after {
    transform: scaleX(1);
  }
  
  .quote-icon {
    color: var(--theme-accent-color);
    opacity: 0.7;
  }
  
  .avatar {
    color: var(--theme-accent-color);
  }
  
  .testimonial-card h5 {
    color: var(--theme-accent-color);
  }
  
  /* CTA Section */
  .cta-section {
    background: linear-gradient(135deg, rgba(10, 18, 37, 0.8) 0%, rgba(18, 18, 18, 0.9) 100%);
  }
  
  .cta-content {
    background-color: rgba(0, 0, 0, 0.3);
    border: 1px solid rgba(0, 230, 195, 0.2);
    border-radius: 20px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  }
  
  /* Footer */
  .footer {
    background-color: rgba(0, 0, 0, 0.5);
    padding-bottom: 20px;
  }
  
  .footer-logo img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: 2px solid var(--theme-accent-color);
  }
  
  .footer-logo span {
    color: var(--theme-accent-color);
    font-weight: bold;
    margin-left: 10px;
    font-size: 18px;
  }
  
  .footer h5 {
    color: var(--theme-accent-color);
    margin-bottom: 20px;
    font-weight: 600;
  }
  
  .footer-links {
    list-style: none;
    padding: 0;
  }
  
  .footer-links li {
    margin-bottom: 10px;
  }
  
  .footer-links a {
    color: var(--theme-text-color);
    text-decoration: none;
    transition: all 0.3s ease;
    opacity: 0.8;
    display: inline-block;
  }
  
  .footer-links a:hover {
    color: var(--theme-accent-color);
    opacity: 1;
    transform: translateX(5px);
  }
  
  .social-icon {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    background-color: rgba(255, 255, 255, 0.1);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--theme-text-color);
    transition: all 0.3s ease;
    text-decoration: none;
  }
  
  .social-icon:hover {
    background-color: var(--theme-accent-color);
    transform: translateY(-3px);
    color: #121212;
  }
  
  .footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: 20px;
    margin-top: 30px;
    font-size: 14px;
    opacity: 0.7;
  }
  
  /* Theme Professional */
  .theme-professional {
    --theme-bg-color: #1A2A42;
    --theme-text-color: #ffffff;
    --theme-accent-color: hsl(51, 100%, 50%);
    --theme-secondary-accent: #4A90E2;
    --theme-button-primary: #4A90E2;
    --theme-button-secondary: #333333;
  }
  
  /* Responsive Styles */
  @media (max-width: 991px) {
    .hero-section {
      padding: 100px 0 60px;
      text-align: center;
    }
    
    .hero-content {
      margin-bottom: 40px;
    }
    
    .icon-container {
      width: 200px;
      height: 200px;
    }
    
    .gear-1, .gear-2 {
      opacity: 0.3;
    }
  }
  
  @media (max-width: 767px) {
    .hero-content h1 {
      font-size: 2.5rem;
    }
    
    .feature-card, .testimonial-card {
      margin-bottom: 15px;
    }
    
    .icon-wrapper {
      width: 60px;
      height: 60px;
    }
    
    .social-icons {
      justify-content: center;
    }
  }
  
  /* Keyframe Animation for Gear Icons */
  @keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Accessibility */
.visually-hidden {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}