.gradient-bg {
    background: linear-gradient(135deg, #4f46e5 0%, #7c3aed 50%, #a855f7 100%);
}
.browser-icon {
    transition: all 0.3s ease;
}
.browser-icon:hover {
    transform: translateY(-5px);
}
.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
}
.signature-animation {
    animation: sign 2s infinite alternate;
}
@keyframes sign {
    0% {
        transform: translateY(0);
    }
    100% {
        transform: translateY(-10px);
    }
}
.document-mockup {
    position: relative;
    background: white;
    border-radius: 8px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    overflow: hidden;
}
.document-mockup::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 40px;
    background: #f3f4f6;
}
.document-content {
    padding: 2rem;
    margin-top: 40px;
}
.signature-placeholder {
    border: 2px dashed #e5e7eb;
    border-radius: 4px;
    padding: 1rem;
    margin-top: 2rem;
    position: relative;
}
.signature-btn {
    position: absolute;
    right: 10px;
    bottom: 10px;
    background: #4f46e5;
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 4px;
    font-size: 0.875rem;
    font-weight: 500;
}

@keyframes pulse {
  0% {
      transform: scale(1);
  }
  50% {
      transform: scale(1.05);
  }
  100% {
      transform: scale(1);
  }
}

#warnBrowser, #warnOS {
  font-size: 1rem;
  padding-top: 0.5rem;
  transition: all 0.3s ease-in-out;
}

#warnBrowser div, #warnOS div {
  animation: fadeIn 0.6s ease;
}

@keyframes fadeIn {
  from { opacity: 0; transform: scale(0.95); }
  to { opacity: 1; transform: scale(1); }
}

.animate-fadeIn {
  animation: fadeIn 0.3s ease-out forwards;
}