/* CSS Variables for OS-like theme */
  :root {
      --primary: #8B5CF6;
      --secondary: #7c3aed;
      --accent: #6D28D9;
      --accent-light: #A78BFA;
      --success: #10B981;
      --warning: #F59E0B;
      --error: #EF4444;
      --info: #3B82F6;
      
      /* Glass & Blur Effects */
      --glass-bg: rgba(255, 255, 255, 0.05);
      --glass-border: rgba(255, 255, 255, 0.1);
      --blur-strength: 20px;
      
      /* Shadows & Depth */
      --shadow-primary: 0 8px 32px rgba(139, 92, 246, 0.2);
      --shadow-glass: 0 8px 32px rgba(0, 0, 0, 0.1);
      --shadow-neumorphic: 20px 20px 60px rgba(0, 0, 0, 0.3), -20px -20px 60px rgba(255, 255, 255, 0.05);
      --shadow-glow: 0 0 30px rgba(139, 92, 246, 0.3);
      --shadow-button: 0 4px 20px rgba(139, 92, 246, 0.4);
      
      /* Gradients */
      --gradient-primary: linear-gradient(135deg, var(--primary), var(--secondary));
      --gradient-glass: linear-gradient(135deg, rgba(255, 255, 255, 0.1), rgba(255, 255, 255, 0.05));
      --gradient-mesh: 
          radial-gradient(circle at 20% 50%, rgba(139, 92, 246, 0.2) 0%, transparent 50%),
          radial-gradient(circle at 80% 20%, rgba(124, 58, 237, 0.2) 0%, transparent 50%),
          radial-gradient(circle at 40% 80%, rgba(109, 40, 217, 0.2) 0%, transparent 50%),
          radial-gradient(circle at 60% 40%, rgba(167, 139, 250, 0.15) 0%, transparent 50%);
  }

  /* Dark Theme - More Vibrant */
  .dark {
      --bg-primary: #0F0F1A;
      --bg-secondary: #1A1A2E;
      --bg-elevated: rgba(35, 35, 60, 0.8);
      --text-primary: #FFFFFF;
      --text-secondary: rgba(255, 255, 255, 0.7);
      --text-muted: rgba(255, 255, 255, 0.5);
      --border-primary: rgba(139, 92, 246, 0.2);
      --border-secondary: rgba(139, 92, 246, 0.1);
      --footer-bg: var(--bg-secondary);
  }

  /* Light Theme */
  html:not(.dark) {
      --bg-primary: #FAFBFF;
      --bg-secondary: #F0F0F7;
      --bg-elevated: rgba(255, 255, 255, 0.8);
      --text-primary: #1A1A2E;
      --text-secondary: rgba(26, 26, 46, 0.7);
      --text-muted: rgba(26, 26, 46, 0.5);
      --border-primary: rgba(139, 92, 246, 0.1);
      --border-secondary: rgba(139, 92, 246, 0.05);
      --glass-bg: rgba(255, 255, 255, 0.25);
      --glass-border: rgba(255, 255, 255, 0.3);
      --shadow-neumorphic: 20px 20px 60px rgba(139, 92, 246, 0.1), -20px -20px 60px rgba(255, 255, 255, 0.8);
      --footer-bg: var(--bg-primary);
  }

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

  html {
      scroll-behavior: smooth;
  }

  body {
      font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
      background: var(--bg-primary);
      background-image: var(--gradient-mesh);
      color: var(--text-primary);
      line-height: 1.6;
      overflow-x: hidden;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      opacity: 0;
      animation: fadeInBody 1s ease-out forwards;
  }

  @keyframes fadeInBody {
      to { opacity: 1; }
  }

  /* Flash Messages Styling */
  .flash-container {
      position: fixed;
      top: 100px;
      right: 20px;
      z-index: 9999;
      display: flex;
      flex-direction: column;
      gap: 12px;
      max-width: 400px;
      width: 100%;
  }

  .flash-message {
      display: flex;
      align-items: center;
      justify-content: space-between;
      padding: 16px 20px;
      border-radius: 16px;
      backdrop-filter: blur(20px);
      border: 1px solid;
      box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
      animation: slideInFromRight 0.5s cubic-bezier(0.4, 0, 0.2, 1);
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      position: relative;
      overflow: hidden;
  }

  .flash-message::before {
      content: '';
      position: absolute;
      left: 0;
      top: 0;
      bottom: 0;
      width: 4px;
      background: currentColor;
      opacity: 0.8;
  }

  .flash-message::after {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      bottom: 0;
      background: inherit;
      opacity: 0.1;
      z-index: -1;
  }

  /* Flash Message Types */
  .flash-message.success {
      background: rgba(16, 185, 129, 0.1);
      border-color: rgba(16, 185, 129, 0.3);
      color: #10B981;
  }

  .flash-message.error {
      background: rgba(239, 68, 68, 0.1);
      border-color: rgba(239, 68, 68, 0.3);
      color: #EF4444;
  }

  .flash-message.warning {
      background: rgba(245, 158, 11, 0.1);
      border-color: rgba(245, 158, 11, 0.3);
      color: #F59E0B;
  }

  .flash-message.info {
      background: rgba(59, 130, 246, 0.1);
      border-color: rgba(59, 130, 246, 0.3);
      color: #3B82F6;
  }

  .flash-message.message {
      background: rgba(139, 92, 246, 0.1);
      border-color: rgba(139, 92, 246, 0.3);
      color: var(--primary);
  }

  .flash-text {
      flex: 1;
      font-weight: 500;
      font-size: 14px;
      line-height: 1.5;
      margin-right: 12px;
  }

  .flash-close {
      background: none;
      border: none;
      color: currentColor;
      font-size: 18px;
      cursor: pointer;
      padding: 4px;
      border-radius: 6px;
      transition: all 0.2s ease;
      display: flex;
      align-items: center;
      justify-content: center;
      width: 24px;
      height: 24px;
      opacity: 0.7;
  }

  .flash-close:hover {
      opacity: 1;
      background: rgba(255, 255, 255, 0.1);
      transform: scale(1.1);
  }

  .flash-close:active {
      transform: scale(0.95);
  }

  /* Flash Message Animations */
  @keyframes slideInFromRight {
      from {
          transform: translateX(100%);
          opacity: 0;
      }
      to {
          transform: translateX(0);
          opacity: 1;
      }
  }

  @keyframes slideOutToRight {
      from {
          transform: translateX(0);
          opacity: 1;
      }
      to {
          transform: translateX(100%);
          opacity: 0;
      }
  }

  .flash-message.removing {
      animation: slideOutToRight 0.3s cubic-bezier(0.4, 0, 0.2, 1) forwards;
  }

  /* Progress bar for auto-dismiss */
  .flash-message .progress-bar {
      position: absolute;
      bottom: 0;
      left: 0;
      height: 2px;
      background: currentColor;
      opacity: 0.6;
      animation: progressBar 5s linear;
  }

  @keyframes progressBar {
      from { width: 100%; }
      to { width: 0%; }
  }

  /* Responsive Flash Messages */
  @media (max-width: 768px) {
      .flash-container {
          left: 20px;
          right: 20px;
          top: 80px;
          max-width: none;
      }

      .flash-message {
          padding: 14px 16px;
          font-size: 13px;
      }
  }

  @media (max-width: 480px) {
      .flash-container {
          left: 12px;
          right: 12px;
          top: 70px;
      }

      .flash-message {
          padding: 12px 14px;
          border-radius: 12px;
      }

      .flash-text {
          font-size: 13px;
          margin-right: 8px;
      }

      .flash-close {
          width: 20px;
          height: 20px;
          font-size: 16px;
      }
  }

  /* Animated Background Orbs */
  .background-orbs {
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      overflow: hidden;
      z-index: 0;
      pointer-events: none;
  }

  .orb {
      position: absolute;
      border-radius: 50%;
      background: var(--gradient-primary);
      opacity: 0.1;
      animation: float 20s infinite linear;
      filter: blur(1px);
  }

  .orb:nth-child(1) {
      width: 200px;
      height: 200px;
      left: 10%;
      top: 20%;
      animation-delay: 0s;
  }

  .orb:nth-child(2) {
      width: 150px;
      height: 150px;
      right: 15%;
      top: 30%;
      animation-delay: -5s;
  }

  .orb:nth-child(3) {
      width: 100px;
      height: 100px;
      left: 70%;
      bottom: 25%;
      animation-delay: -10s;
  }

  .orb:nth-child(4) {
      width: 120px;
      height: 120px;
      right: 25%;
      bottom: 40%;
      animation-delay: -15s;
  }

  @keyframes float {
      0%, 100% { transform: translate(0, 0) rotate(0deg); }
      25% { transform: translate(30px, -30px) rotate(90deg); }
      50% { transform: translate(-20px, -50px) rotate(180deg); }
      75% { transform: translate(-40px, 20px) rotate(270deg); }
  }

  /* Glass Morphism Components */
  .glass {
      background: var(--glass-bg);
      backdrop-filter: blur(var(--blur-strength));
      border: 1px solid var(--glass-border);
      box-shadow: var(--shadow-glass);
  }

  .neumorphic {
      background: var(--bg-elevated);
      box-shadow: var(--shadow-neumorphic);
      border: 1px solid var(--border-secondary);
  }

  /* Navigation */
  nav {
      position: fixed;
      top: 0;
      left: 0;
      right: 0;
      z-index: 1000;
      padding: 1.5rem 0;
  }

  .nav-container {
      max-width: 1900px;
      margin: 0 auto;
      padding: 0 2rem;
      display: flex;
      justify-content: space-between;
      align-items: center;
      width: 100%;
  }

  /* Professional Animated Logo - Enhanced Gradient Animation - LEFT SIDE */
  .logo {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      font-family: 'Space Grotesk', monospace;
      font-size: 1.3rem;
      font-weight: 600;
      text-decoration: none;
      position: relative;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      letter-spacing: -0.02em;
  }

  .logo-icon {
      position: relative;
      width: 40px;
      height: 40px;
      display: flex;
      align-items: center;
      justify-content: center;
      transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .logo-icon::before {
      content: '';
      position: absolute;
      width: 100%;
      height: 100%;
      opacity: 0;
      transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .logo-icon::after {
      content: '';
      position: absolute;
      width: 120%;
      height: 120%;
      opacity: 0;
      transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
      transform: scale(0);
  }

  .logo-icon i {
      font-size: 1.6rem;
      background: linear-gradient(45deg, #8B5CF6, #7c3aed, #6D28D9, #A78BFA, #C084FC, #DDD6FE);
      background-size: 400% 400%;
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      z-index: 2;
      position: relative;
      transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
      filter: drop-shadow(0 0 10px rgba(139, 92, 246, 0.3));

  }

  @keyframes gradientShift {
      0% { 
          background-position: 0% 50%;
          filter: drop-shadow(0 0 10px rgba(139, 92, 246, 0.3));
      }
      25% { 
          background-position: 100% 50%;
          filter: drop-shadow(0 0 15px rgba(124, 58, 237, 0.4));
      }
      50% { 
          background-position: 100% 100%;
          filter: drop-shadow(0 0 20px rgba(167, 139, 250, 0.5));
      }
      75% { 
          background-position: 0% 100%;
          filter: drop-shadow(0 0 15px rgba(192, 132, 252, 0.4));
      }
      100% { 
          background-position: 0% 50%;
          filter: drop-shadow(0 0 10px rgba(139, 92, 246, 0.3));
      }
  }

  .logo-text {
      background: linear-gradient(45deg, #8B5CF6, #7c3aed, #6D28D9, #A78BFA, #C084FC, #DDD6FE);
      background-size: 400% 400%;
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
      position: relative;
      transition: all 0.3s ease;
      animation: logoTextGlow 4s ease-in-out infinite;
  }

  @keyframes logoTextGlow {
      0% { 
          background-position: 0% 50%;
          text-shadow: 0 0 0 rgba(139, 92, 246, 0);
          filter: brightness(1);
      }
      25% { 
          background-position: 100% 50%;
          text-shadow: 0 0 10px rgba(124, 58, 237, 0.2);
          filter: brightness(1.05);
      }
      50% { 
          background-position: 100% 100%;
          text-shadow: 0 0 20px rgba(139, 92, 246, 0.4);
          filter: brightness(1.1);
      }
      75% { 
          background-position: 0% 100%;
          text-shadow: 0 0 10px rgba(167, 139, 250, 0.2);
          filter: brightness(1.05);
      }
      100% { 
          background-position: 0% 50%;
          text-shadow: 0 0 0 rgba(139, 92, 246, 0);
          filter: brightness(1);
      }
  }

  .logo-text::after {
      content: 'Pro-tonn';
      position: absolute;
      top: 0;
      left: 0;
      background: linear-gradient(135deg, #A78BFA, #8B5CF6, #C084FC);
      background-size: 200% 200%;
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      opacity: 0;
      transition: opacity 0.3s ease;
      animation: logoAfterShift 3s ease-in-out infinite;
  }

  @keyframes logoAfterShift {
      0%, 100% { background-position: 0% 50%; }
      50% { background-position: 100% 50%; }
  }

  /* Logo Hover Animations */
  .logo:hover .logo-icon::before {
      opacity: 0.1;
      transform: rotate(360deg) scale(1.2);
  }

  .logo:hover .logo-icon::after {
      opacity: 1;
      transform: scale(1);
  }

  .logo:hover .logo-icon i {
      transform: rotate(-360deg) scale(1.2);
      animation-duration: 1.5s;
  }

  .logo:hover .logo-text {
      animation-duration: 1.5s;
  }

  .logo:hover .logo-text::after {
      opacity: 0.8;
  }

  /* Active state for logo */
  .logo:active .logo-icon {
      transform: scale(0.95);
  }

  /* Enhanced Animated Toggle Switch - RIGHT SIDE */
  .theme-switch {
      position: relative;
      width: 70px;
      height: 35px;
      background: var(--glass-bg);
      border-radius: 50px;
      border: 1px solid var(--glass-border);
      cursor: pointer;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      backdrop-filter: blur(10px);
      overflow: hidden;
      margin-left: auto;
  }

  .theme-switch::before {
      content: '';
      position: absolute;
      top: 3px;
      left: 3px;
      width: 27px;
      height: 27px;
      background: var(--gradient-primary);
      border-radius: 50%;
      transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
      box-shadow: 0 4px 12px rgba(139, 92, 246, 0.4);
  }

  .theme-switch .switch-icon {
      position: absolute;
      top: 50%;
      transform: translateY(-50%);
      font-size: 0.8rem;
      color: white;
      transition: all 0.3s ease;
      z-index: 1;
  }

  .theme-switch .sun-icon {
      right: 9px;
      opacity: 0;
  }

  .theme-switch .moon-icon {
      left: 9px;
      opacity: 1;
  }

  /* Light mode switch state */
  html:not(.dark) .theme-switch::before {
      transform: translateX(35px);
  }

  html:not(.dark) .theme-switch .sun-icon {
      opacity: 1;
  }

  html:not(.dark) .theme-switch .moon-icon {
      opacity: 0;
  }

  .theme-switch:hover {
      transform: scale(1.05);
      box-shadow: var(--shadow-glow);
  }

  .theme-switch:active {
      transform: scale(0.95);
  }

  /* Hero Section */
  .hero {
      min-height: 100vh;
      display: flex;
      align-items: center;
      justify-content: center;
      padding: 8rem 2rem 4rem;
      position: relative;
      z-index: 1;
  }

  .hero-content {
      text-align: center;
      max-width: 900px;
      z-index: 2;
  }

  .hero-badge {
      display: inline-flex;
      align-items: center;
      gap: 0.5rem;
      padding: 0.75rem 1.5rem;
      margin-bottom: 2rem;
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: 50px;
      backdrop-filter: blur(var(--blur-strength));
      font-size: 0.9rem;
      font-weight: 500;
      color: var(--text-secondary);
  }

  .hero-badge i {
      color: var(--primary);
      animation: sparkle 2s ease-in-out infinite;
  }

  @keyframes sparkle {
      0%, 100% { transform: scale(1) rotate(0deg); }
      50% { transform: scale(1.2) rotate(180deg); }
  }

  .hero h1 {
      font-size: clamp(3rem, 8vw, 5rem);
      font-weight: 800;
      line-height: 1.1;
      margin-bottom: 1.5rem;
      background: var(--gradient-primary);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      background-clip: text;
  }

  .hero p {
      font-size: 1.25rem;
      color: var(--text-secondary);
      margin-bottom: 3rem;
      max-width: 600px;
      margin-left: auto;
      margin-right: auto;
  }

  .hero-buttons {
      display: flex;
      gap: 1.5rem;
      justify-content: center;
      flex-wrap: wrap;
  }

  /* Enhanced Buttons with Advanced Animations */
  .btn {
      display: inline-flex;
      align-items: center;
      gap: 0.75rem;
      padding: 1rem 2rem;
      border-radius: 60px;
      font-weight: 600;
      font-size: 1rem;
      text-decoration: none;
      cursor: pointer;
      border: none;
      transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
      position: relative;
      overflow: hidden;
      font-family: 'Inter', sans-serif;
  }

  .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 0.6s ease;
  }

  .btn::after {
      content: '';
      position: absolute;
      top: 50%;
      left: 50%;
      width: 0;
      height: 0;
      background: rgba(255, 255, 255, 0.3);
      border-radius: 50%;
      transform: translate(-50%, -50%);
      transition: width 0.6s ease, height 0.6s ease;
  }

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

  .btn:active::after {
      width: 300px;
      height: 300px;
  }

  .btn-primary {
      background: var(--gradient-primary);
      color: white;
      box-shadow: var(--shadow-button);
  }

  .btn-primary:hover {
      transform: translateY(-3px) scale(1.02);
      box-shadow: 0 15px 50px rgba(139, 92, 246, 0.5);
  }

  .btn-primary:active {
      transform: translateY(-1px) scale(0.98);
      transition: all 0.1s ease;
  }

  .btn-glass {
      background: var(--glass-bg);
      backdrop-filter: blur(var(--blur-strength));
      border: 1px solid var(--glass-border);
      color: var(--text-primary);
  }

  .btn-glass:hover {
      transform: translateY(-3px) scale(1.02);
      background: var(--glass-border);
      border-color: var(--primary);
      box-shadow: var(--shadow-glow);
  }

  .btn-glass:active {
      transform: translateY(-1px) scale(0.98);
      transition: all 0.1s ease;
  }

  .btn i {
      transition: transform 0.3s ease;
  }

  .btn:hover i {
      transform: translateX(3px);
  }

  /* Sections */
  .section {
      padding: 8rem 2rem;
      position: relative;
      z-index: 1;
  }

  .container {
      max-width: 1400px;
      margin: 0 auto;
  }

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

  .section-badge {
      display: inline-block;
      padding: 0.5rem 1rem;
      background: var(--glass-bg);
      border: 1px solid var(--glass-border);
      border-radius: 50px;
      backdrop-filter: blur(var(--blur-strength));
      font-size: 0.875rem;
      font-weight: 500;
      color: var(--primary);
      margin-bottom: 1rem;
  }

  .section-title {
      font-size: clamp(2.5rem, 5vw, 3.5rem);
      font-weight: 800;
      margin-bottom: 1rem;
      background: var(--gradient-primary);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
  }

  .section-subtitle {
      font-size: 1.25rem;
      color: var(--text-secondary);
      max-width: 600px;
      margin: 0 auto;
  }

  /* Feature Grid */
  .feature-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
      gap: 2rem;
      margin-top: 4rem;
  }

  .feature-card {
      background: var(--glass-bg);
      backdrop-filter: blur(var(--blur-strength));
      border: 1px solid var(--glass-border);
      border-radius: 24px;
      padding: 2.5rem;
      transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
      position: relative;
      overflow: hidden;
  }

  .feature-card::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      right: 0;
      height: 1px;
      background: var(--gradient-primary);
      opacity: 0;
      transition: opacity 0.3s ease;
  }

  .feature-card:hover {
      transform: translateY(-10px) scale(1.02);
      border-color: var(--primary);
      box-shadow: 0 25px 80px rgba(139, 92, 246, 0.3);
  }

  .feature-card:hover::before {
      opacity: 1;
  }

  .feature-icon {
      width: 60px;
      height: 60px;
      background: var(--gradient-primary);
      border-radius: 16px;
      display: flex;
      align-items: center;
      justify-content: center;
      margin-bottom: 1.5rem;
      font-size: 1.5rem;
      color: white;
      transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .feature-card:hover .feature-icon {
      transform: scale(1.1) rotate(10deg);
      box-shadow: 0 12px 35px rgba(139, 92, 246, 0.5);
  }

  .feature-title {
      font-size: 1.5rem;
      font-weight: 700;
      margin-bottom: 1rem;
      color: var(--text-primary);
  }

  .feature-description {
      color: var(--text-secondary);
      line-height: 1.6;
  }

  /* Stats Grid */
  .stats-grid {
      display: grid;
      grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
      gap: 2rem;
      margin-top: 4rem;
  }

  .stat-card {
      text-align: center;
      background: var(--glass-bg);
      backdrop-filter: blur(var(--blur-strength));
      border: 1px solid var(--glass-border);
      border-radius: 24px;
      padding: 2.5rem 1.5rem;
      transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .stat-card:hover {
      transform: translateY(-10px) scale(1.02);
      border-color: var(--primary);
      box-shadow: var(--shadow-glow);
  }

  .stat-icon {
      width: 60px;
      height: 60px;
      background: var(--gradient-primary);
      border-radius: 50%;
      display: flex;
      align-items: center;
      justify-content: center;
      margin: 0 auto 1.5rem;
      font-size: 1.5rem;
      color: white;
      transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .stat-card:hover .stat-icon {
      transform: scale(1.15) rotate(360deg);
      box-shadow: 0 12px 35px rgba(139, 92, 246, 0.5);
  }

  .stat-value {
      font-size: 3rem;
      font-weight: 800;
      background: var(--gradient-primary);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 0.5rem;
  }

  .stat-label {
      color: var(--text-secondary);
      font-weight: 500;
  }

  /* Section Spacing */
  .stats-section {
      padding-bottom: 12rem; /* Extra spacing before CTA */
  }

  /* CTA Section */
  .cta-section {
      background: var(--glass-bg);
      backdrop-filter: blur(var(--blur-strength));
      border: 1px solid var(--glass-border);
      border-radius: 32px;
      padding: 4rem 2rem;
      text-align: center;
      margin-top: 4rem;
  }

  /* Professional Sleek Footer - Blended with Body */
  .footer {
      background: var(--footer-bg);
      background-image: var(--gradient-mesh);
      border-top: 1px solid var(--border-primary);
      padding: 5rem 2rem 2rem;
      margin-top: 8rem;
      position: relative;
      overflow: hidden;
  }

  .dark .footer {
      background: var(--bg-secondary);
  }

  html:not(.dark) .footer {
      background: var(--bg-primary);
      background-image: var(--gradient-mesh);
  }

  .footer::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 2px;
      background: var(--gradient-primary);
      opacity: 0.6;
  }

  .footer::after {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: radial-gradient(circle at 50% 0%, rgba(139, 92, 246, 0.05) 0%, transparent 50%);
      pointer-events: none;
  }

  .footer-content {
      max-width: 1400px;
      margin: 0 auto;
      display: grid;
      grid-template-columns: 2fr 1fr 1fr;
      gap: 4rem;
      align-items: start;
      position: relative;
      z-index: 1;
  }

  .footer-brand-section {
      display: flex;
      flex-direction: column;
      gap: 1.5rem;
  }

  .footer-brand {
      display: flex;
      align-items: center;
      gap: 0.75rem;
      font-family: 'Space Grotesk', monospace;
      font-size: 1.5rem;
      font-weight: 700;
      background: var(--gradient-primary);
      -webkit-background-clip: text;
      -webkit-text-fill-color: transparent;
      margin-bottom: 1rem;
      letter-spacing: -0.02em;
  }

  .footer-brand .logo-icon {
      width: 35px;
      height: 35px;
  }

  .footer-brand .logo-icon i {
      font-size: 1.4rem;
  }

  .footer-description {
      color: var(--text-secondary);
      line-height: 1.8;
      max-width: 400px;
      font-size: 1rem;
  }

  .footer-section {
      display: flex;
      flex-direction: column;
      gap: 1rem;
  }

  .footer-section-title {
      font-size: 1.1rem;
      font-weight: 600;
      color: var(--text-primary);
      margin-bottom: 1rem;
      position: relative;
  }

  .footer-section-title::after {
      content: '';
      position: absolute;
      bottom: -0.5rem;
      left: 0;
      width: 30px;
      height: 2px;
      background: var(--gradient-primary);
      border-radius: 1px;
  }

  .footer-links {
      display: flex;
      flex-direction: column;
      gap: 0.75rem;
  }

  .footer-link {
      color: var(--text-secondary);
      text-decoration: none;
      padding: 0.5rem 0;
      transition: all 0.3s ease;
      position: relative;
      font-size: 0.95rem;
  }

  .footer-link::before {
      content: '';
      position: absolute;
      left: 0;
      bottom: 0;
      width: 0;
      height: 1px;
      background: var(--gradient-primary);
      transition: width 0.3s ease;
  }

  .footer-link:hover {
      color: var(--primary);
      transform: translateX(5px);
  }

  .footer-link:hover::before {
      width: 100%;
  }

  .social-section {
      display: flex;
      flex-direction: column;
      align-items: center;
      gap: 1.5rem;
      grid-column: 1 / -1;
      margin-top: 2rem;
      padding-top: 2rem;
      border-top: 1px solid var(--border-secondary);
  }

  .social-links {
      display: flex;
      gap: 1rem;
      justify-content: center;
      flex-wrap: wrap;
  }

  .social-link {
      width: 50px;
      height: 50px;
      background: var(--glass-bg);
      border: 1px solid var(--border-secondary);
      border-radius: 12px;
      display: flex;
      align-items: center;
      justify-content: center;
      color: var(--text-secondary);
      text-decoration: none;
      backdrop-filter: blur(10px);
      transition: all 0.3s ease;
      position: relative;
      overflow: hidden;
  }

  .social-link::before {
      content: '';
      position: absolute;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: var(--gradient-primary);
      opacity: 0;
      transition: opacity 0.3s ease;
  }

  .social-link:hover {
      color: white;
      border-color: var(--primary);
      transform: translateY(-3px) scale(1.05);
      box-shadow: 0 8px 25px rgba(139, 92, 246, 0.4);
  }

  .social-link:hover::before {
      opacity: 1;
  }

  .social-link:active {
      transform: translateY(-1px) scale(0.95);
  }

  .social-link i {
      position: relative;
      z-index: 1;
      font-size: 1.2rem;
      display: flex;
      align-items: center;
      justify-content: center;
      width: 100%;
      height: 100%;
  }

  .footer-bottom {
      padding-top: 1rem;
      text-align: center;
      color: var(--text-muted);
      font-size: 0.9rem;
      grid-column: 1 / -1;
  }

  /* Animations */
  .fade-up {
      opacity: 0;
      transform: translateY(30px);
      transition: all 0.6s cubic-bezier(0.4, 0, 0.2, 1);
  }

  .fade-up.visible {
      opacity: 1;
      transform: translateY(0);
  }

  /* Advanced Button Click Animation */
  @keyframes buttonClick {
      0% { transform: scale(1); }
      50% { transform: scale(0.95); }
      100% { transform: scale(1); }
  }

  .btn.clicked {
      animation: buttonClick 0.2s ease;
  }

  /* Responsive Design */
  @media (max-width: 1024px) {
      .footer-content {
          grid-template-columns: 1fr 1fr;
          gap: 3rem;
      }

      .social-section {
          grid-column: 1 / -1;
          text-align: center;
      }
  }

  @media (max-width: 768px) {
      .hero-buttons {
          flex-direction: column;
          align-items: center;
      }

      .btn {
          width: 100%;
          max-width: 280px;
          justify-content: center;
      }

      .feature-grid,
      .stats-grid {
          grid-template-columns: 1fr;
      }

      .footer-content {
          grid-template-columns: 1fr;
          text-align: center;
          gap: 2.5rem;
      }

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

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

      .nav-container {
          padding: 0 1rem;
      }

      .logo {
          font-size: 1.2rem;
      }

      .logo-icon {
          width: 35px;
          height: 35px;
      }

      .logo-icon i {
          font-size: 1.4rem;
      }
  }

  @media (max-width: 480px) {
      .section {
          padding: 4rem 1rem;
      }

      .feature-card,
      .stat-card {
          padding: 2rem 1.5rem;
      }

      .hero {
          padding: 6rem 1rem 4rem;
      }

      .hero-badge {
          padding: 0.5rem 1rem;
          font-size: 0.8rem;
      }

      .theme-switch {
          width: 60px;
          height: 30px;
      }

      .theme-switch::before {
          width: 22px;
          height: 22px;
          top: 3px;
          left: 3px;
      }

      html:not(.dark) .theme-switch::before {
          transform: translateX(30px);
      }

      .theme-switch .switch-icon {
          font-size: 0.7rem;
      }

      .theme-switch .sun-icon {
          right: 6px;
      }

      .theme-switch .moon-icon {
          left: 6px;
      }

      .footer {
          padding: 3rem 1rem 1.5rem;
      }

      .footer-content {
          gap: 2rem;
      }

      .footer-brand {
          font-size: 1.3rem;
      }

      .social-links {
          gap: 0.75rem;
      }

      .social-link {
          width: 45px;
          height: 45px;
      }

      .social-link i {
          font-size: 1.1rem;
      }
  }

  /* Reduced motion */
  @media (prefers-reduced-motion: reduce) {
      *,
      *::before,
      *::after {
          animation-duration: 0.01ms !important;
          animation-iteration-count: 1 !important;
          transition-duration: 0.01ms !important;
      }

      .orb,
      .logo-text,
      .logo-icon i {
          animation: none;
      }
  }

  /* High contrast mode */
  @media (prefers-contrast: high) {
      :root {
          --glass-bg: rgba(255, 255, 255, 0.15);
          --glass-border: rgba(255, 255, 255, 0.3);
          --border-primary: rgba(139, 92, 246, 0.5);
          --border-secondary: rgba(139, 92, 246, 0.3);
      }
  }

  /* Focus states for accessibility */
  .logo:focus-visible,
  .btn:focus-visible,
  .theme-switch:focus-visible,
  .footer-link:focus-visible,
  .social-link:focus-visible {
      outline: 2px solid var(--primary);
      outline-offset: 2px;
  }

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

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

  ::-webkit-scrollbar-thumb {
      background: var(--gradient-primary);
      border-radius: 4px;
  }

  ::-webkit-scrollbar-thumb:hover {
      background: var(--primary);
  }

  /* Selection styling */
  ::selection {
      background: var(--primary);
      color: white;
  }

  /* Ripple Effect */
  .ripple {
      position: absolute;
      border-radius: 50%;
      background: rgba(255, 255, 255, 0.3);
      transform: scale(0);
      animation: rippleEffect 0.6s linear;
      pointer-events: none;
  }

  @keyframes rippleEffect {
      to {
          transform: scale(4);
          opacity: 0;
      }
  }

  @keyframes pulse {
      0%, 100% { transform: scale(1); }
      50% { transform: scale(1.15); }
  }