body {
      box-sizing: border-box;
    }
    
    @keyframes fadeInUp {
      from {
        opacity: 0;
        transform: translateY(30px);
      }
      to {
        opacity: 1;
        transform: translateY(0);
      }
    }
    
    @keyframes float {
      0%, 100% {
        transform: translateY(0px);
      }
      50% {
        transform: translateY(-20px);
      }
    }
    
    @keyframes gradient {
      0% {
        background-position: 0% 50%;
      }
      50% {
        background-position: 100% 50%;
      }
      100% {
        background-position: 0% 50%;
      }
    }
    
    .animate-fade-in-up {
      animation: fadeInUp 0.8s ease-out forwards;
    }
    
    .animate-float {
      animation: float 3s ease-in-out infinite;
    }
    
    .gradient-bg {
      background: linear-gradient(-45deg, #e0f2f1, #e1bee7, #bbdefb, #f0f4c3);
      background-size: 400% 400%;
      animation: gradient 15s ease infinite;
    }
    
    .glass-card {
      background: rgba(255, 255, 255, 0.7);
      backdrop-filter: blur(10px);
      border: 1px solid rgba(255, 255, 255, 0.3);
      transition: all 0.3s ease;
    }
    
    .glass-card:hover {
      transform: translateY(-8px);
      box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    }
    
    .nav-link {
      position: relative;
      transition: color 0.3s ease;
    }
    
    .nav-link:after {
      content: '';
      position: absolute;
      bottom: -4px;
      left: 0;
      width: 0;
      height: 2px;
      background: linear-gradient(90deg, #80cbc4, #9c27b0);
      transition: width 0.3s ease;
    }
    
    .nav-link:hover:after {
      width: 100%;
    }
    
    .btn-primary {
      background: linear-gradient(135deg, #80cbc4, #64b5f6);
      transition: all 0.3s ease;
    }
    
    .btn-primary:hover {
      transform: scale(1.05);
      box-shadow: 0 10px 25px rgba(100, 181, 246, 0.3);
    }
    
    .btn-secondary {
      background: linear-gradient(135deg, #ce93d8, #f48fb1);
      transition: all 0.3s ease;
    }
    
    .btn-secondary:hover {
      transform: scale(1.05);
      box-shadow: 0 10px 25px rgba(206, 147, 216, 0.3);
    }
    
    .feature-icon {
      background: linear-gradient(135deg, #e1f5fe, #f3e5f5);
      transition: transform 0.3s ease;
    }
    
    .glass-card:hover .feature-icon {
      transform: scale(1.1) rotate(5deg);
    }
    
    .blog-card {
      overflow: hidden;
      transition: all 0.3s ease;
    }
    
    .blog-card:hover {
      transform: translateY(-8px);
    }
    
    .blog-card img {
      transition: transform 0.5s ease;
    }
    
    .blog-card:hover img {
      transform: scale(1.1);
    }
    
    .testimonial-card {
      background: linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(255, 255, 255, 0.7));
      backdrop-filter: blur(10px);
      border: 1px solid rgba(255, 255, 255, 0.3);
    }
    
    .social-icon {
      transition: all 0.3s ease;
    }
    
    .social-icon:hover {
      transform: translateY(-3px) scale(1.1);
    }
    
    .mobile-menu {
      max-height: 0;
      overflow: hidden;
      transition: max-height 0.3s ease;
    }
    
    .mobile-menu.active {
      max-height: 500px;
    }
    
    .modal-overlay {
      display: none;
      position: fixed;
      top: 0;
      left: 0;
      width: 100%;
      height: 100%;
      background: rgba(0, 0, 0, 0.5);
      backdrop-filter: blur(5px);
      z-index: 1000;
      align-items: center;
      justify-content: center;
      padding: 20px;
    }
    
    .modal-overlay.active {
      display: flex;
    }
    
    .modal-content {
      background: white;
      max-width: 600px;
      width: 100%;
      max-height: 80%;
      overflow-y: auto;
      animation: fadeInUp 0.3s ease-out;
      border-radius: 24px;
      padding: 32px;
      position: relative;
    }
    
    .auth-form {
      background: white;
      max-width: 450px;
      width: 90%;
      max-height: 90%;
      overflow-y: auto;
      animation: fadeInUp 0.3s ease-out;
    }
    
    .floating-element {
      position: absolute;
      border-radius: 50%;
      opacity: 0.6;
      filter: blur(40px);
    }
    
    .typewriter-cursor {
      animation: blink 1s step-end infinite;
      color: #80cbc4;
    }
    
    @keyframes blink {
      0%, 100% { opacity: 1; }
      50% { opacity: 0; }
    }
    
    .tool-modal-content {
      max-height: 90%;
    }