:root {
  --primary: #2563EB;
  --primary-dark: #1D4ED8;
  --header-bg: #1E293B;
  --body-bg: #F8FAFC;
}

/* Smooth Scrolling */
html {
  scroll-behavior: smooth;
}

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

::-webkit-scrollbar-track {
  background: #F1F5F9;
}

.dark ::-webkit-scrollbar-track {
  background: #0F172A;
}

::-webkit-scrollbar-thumb {
  background: #94A3B8;
  border-radius: 9999px;
}

::-webkit-scrollbar-thumb:hover {
  background: #64748B;
}

.dark ::-webkit-scrollbar-thumb {
  background: #334155;
}

.dark ::-webkit-scrollbar-thumb:hover {
  background: #475569;
}

/* Focus Outline Accessibility */
:focus-visible {
  outline: 2px solid #2563EB;
  outline-offset: 2px;
}

/* Tool Card Hover Effects */
.tool-card-hover {
  transition: transform 0.2s cubic-bezier(0.4, 0, 0.2, 1), box-shadow 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.tool-card-hover:hover {
  transform: translateY(-2px);
}

/* Upload Zone Pulsing & Drag Animations */
@keyframes upload-pulse {
  0%, 100% {
    border-color: #2563EB;
    background-color: rgba(37, 99, 235, 0.05);
  }
  50% {
    border-color: #3B82F6;
    background-color: rgba(59, 130, 246, 0.12);
  }
}

.upload-zone-active {
  animation: upload-pulse 1.5s infinite ease-in-out;
  border-color: #2563EB !important;
}

/* Loading Spinner */
@keyframes spin-clockwise {
  from {
    transform: rotate(0deg);
  }
  to {
    transform: rotate(360deg);
  }
}

.animate-spin-custom {
  animation: spin-clockwise 0.85s linear infinite;
}

/* Ad Container Styling for Minimal CLS */
.ad-container {
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: #F8FAFC;
  border: 1px dashed #E2E8F0;
  border-radius: 0.5rem;
  overflow: hidden;
  margin: 1.5rem 0;
  transition: background-color 0.2s ease, border-color 0.2s ease;
}

.dark .ad-container {
  background-color: #1E293B;
  border-color: #334155;
}

/* Page Transitions */
.page-fade-enter {
  opacity: 0;
  transform: translateY(6px);
}

.page-fade-enter-active {
  opacity: 1;
  transform: translateY(0);
  transition: opacity 0.25s ease-out, transform 0.25s ease-out;
}

/* Toast Notifications */
.toast-item {
  animation: toast-slide-in 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes toast-slide-in {
  from {
    opacity: 0;
    transform: translateY(12px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

/* Print Styles */
@media print {
  header,
  footer,
  .no-print,
  .ad-container,
  #back-to-top,
  #toast-container {
    display: none !important;
  }

  body {
    background-color: #FFFFFF !important;
    color: #000000 !important;
  }
}