/* Modern mLLMCelltype Web Styles */

/* Font display optimization for Core Web Vitals */
@font-face {
  font-family: 'Inter';
  font-display: swap;
  src: local('Inter');
}

@font-face {
  font-family: 'JetBrains Mono';
  font-display: swap;
  src: local('JetBrains Mono');
}

/* Image optimization for Core Web Vitals and CLS prevention */
img {
  max-width: 100%;
  height: auto;
  /* Prevent layout shift by providing aspect ratio when possible */
  aspect-ratio: attr(width) / attr(height);
  /* Improve LCP by displaying placeholder */
  background: linear-gradient(90deg, #f0f0f0 25%, transparent 25%), 
              linear-gradient(#f0f0f0 25%, transparent 25%),
              linear-gradient(90deg, #f0f0f0 75%, transparent 75%),
              linear-gradient(#f0f0f0 75%, transparent 75%);
  background-size: 20px 20px;
  background-position: 0 0, 0 0, 10px 10px, 10px 10px;
  /* Prevent flickering during load */
  image-rendering: -webkit-optimize-contrast;
  image-rendering: crisp-edges;
}

/* Skeleton loading states to prevent CLS */
.loading-skeleton {
  background: linear-gradient(90deg, #f0f0f0 25%, #e0e0e0 50%, #f0f0f0 75%);
  background-size: 200% 100%;
  animation: skeleton-loading 1.5s infinite;
}

@keyframes skeleton-loading {
  0% { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}

/* Advanced micro-interaction animations */
@keyframes dna-spin {
  0% { transform: rotateY(0deg) scale(1); }
  25% { transform: rotateY(90deg) scale(1.1); }
  50% { transform: rotateY(180deg) scale(1.2); }
  75% { transform: rotateY(270deg) scale(1.1); }
  100% { transform: rotateY(360deg) scale(1); }
}

@keyframes float-gentle {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

@keyframes glow-pulse {
  0%, 100% { 
    box-shadow: 0 0 20px rgba(59, 130, 246, 0.3);
    transform: scale(1);
  }
  50% { 
    box-shadow: 0 0 40px rgba(59, 130, 246, 0.6);
    transform: scale(1.05);
  }
}

@keyframes text-shimmer {
  0% { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

@keyframes bounce-in-top {
  0% {
    transform: translateY(-500px);
    animation-timing-function: ease-in;
    opacity: 0;
  }
  38% {
    transform: translateY(0);
    animation-timing-function: ease-out;
    opacity: 1;
  }
  55% {
    transform: translateY(-65px);
    animation-timing-function: ease-in;
  }
  72% {
    transform: translateY(0);
    animation-timing-function: ease-out;
  }
  81% {
    transform: translateY(-28px);
    animation-timing-function: ease-in;
  }
  90% {
    transform: translateY(0);
    animation-timing-function: ease-out;
  }
  95% {
    transform: translateY(-8px);
    animation-timing-function: ease-in;
  }
  100% {
    transform: translateY(0);
    animation-timing-function: ease-out;
  }
}

/* WebP support with fallback */
.webp-image {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

/* Lazy loading optimization */
img[loading="lazy"] {
  /* Ensure proper aspect ratios to prevent layout shift */
  display: block;
}

/* Blur-up placeholder technique */
.image-placeholder {
  background: linear-gradient(135deg, #f0f0f0 0%, #e0e0e0 100%);
  filter: blur(5px);
  transition: filter 0.3s ease;
}

.image-placeholder.loaded {
  filter: blur(0);
}

/* Mobile-first responsive design and touch optimization */
/* Enhanced touch target sizes for better mobile UX */
.btn, button, .upload-area, .form-control, 
input[type="text"], input[type="password"], 
textarea, select, .model-card, .related-card {
  min-height: 44px; /* Minimum touch target for accessibility */
  min-width: 44px;
  /* Enhanced touch feedback */
  -webkit-tap-highlight-color: rgba(0, 0, 0, 0.1);
  -webkit-touch-callout: none;
  -webkit-user-select: none;
  -moz-user-select: none;
  -ms-user-select: none;
  user-select: none;
}

/* Improve text input experience on mobile */
input[type="text"], input[type="password"], textarea {
  -webkit-user-select: text;
  -moz-user-select: text;
  -ms-user-select: text;
  user-select: text;
  /* Prevent zoom on iOS focus */
  font-size: max(16px, 1rem);
}

/* Improve tap targets for mobile */
@media (max-width: 768px) {
  /* Larger touch targets on mobile */
  .btn {
    padding: 12px 20px;
    font-size: 16px; /* Prevent zoom on iOS */
  }
  
  /* Form inputs optimization */
  .form-control {
    font-size: 16px; /* Prevent zoom on iOS */
    padding: 12px 16px;
  }
  
  /* Upload area touch optimization */
  .upload-area {
    min-height: 140px;
    padding: 24px;
    border-radius: 12px;
    /* Enhanced visual feedback */
    transition: all 0.2s ease;
  }
  
  .upload-area:active {
    transform: scale(0.98);
    background-color: var(--gray-50);
  }
  
  /* Model selection cards */
  .model-card {
    margin-bottom: 12px;
    padding: 16px;
  }
  
  /* Spacing optimization for mobile */
  .container {
    padding: 0 16px;
  }
  
  /* Reduce margins on small screens */
  .section {
    margin-bottom: 32px;
  }
  
  /* Stack elements vertically on mobile */
  .row {
    flex-direction: column;
  }
  
  .col {
    width: 100%;
    margin-bottom: 16px;
  }
}

/* Enhanced scrolling behavior for mobile */
@media (max-width: 768px) {
  /* Smooth kinetic scrolling */
  body {
    -webkit-overflow-scrolling: touch;
    overscroll-behavior-y: contain;
  }
  
  /* Optimize scroll containers */
  .results-table-container,
  .preview-table {
    -webkit-overflow-scrolling: touch;
    overscroll-behavior: contain;
  }
  
  /* Better focus states for keyboard navigation */
  .btn:focus,
  .form-control:focus,
  .model-card:focus {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
    z-index: 10;
  }
}

/* Extra small devices optimization */
@media (max-width: 480px) {
  /* Further reduce spacing */
  .container {
    padding: 0 12px;
  }
  
  /* Optimize modal for small screens */
  .modal-content {
    margin: 20px 12px;
    max-height: 90vh;
    overflow-y: auto;
  }
  
  /* Single column layout for very small screens */
  .model-selector {
    grid-template-columns: 1fr;
  }
  
  /* Optimize table display */
  .table-responsive {
    font-size: 14px;
  }
  
  /* Adjust button sizes */
  .btn-sm {
    padding: 8px 12px;
    font-size: 14px;
  }
}

/* Landscape phone optimization */
@media (max-height: 500px) and (orientation: landscape) {
  .hero-section {
    padding: 40px 0;
  }
  
  .modal-content {
    max-height: 80vh;
  }
}

/* Tablet-specific optimizations */
@media (min-width: 768px) and (max-width: 1024px) {
  .model-selector {
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
  }
  
  .container {
    max-width: 720px;
  }
}

/* Enhanced hover states and micro-interactions */
@media (hover: hover) and (pointer: fine) {
  .btn:hover,
  .model-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  }
  
  /* Enhanced button interactions */
  .btn:hover {
    transform: translateY(-1px) scale(1.02);
  }
  
  .btn:active {
    transform: translateY(0) scale(0.98);
    transition: all 0.1s ease;
  }
  
  /* Feature card enhanced hover */
  .feature-card:hover {
    transform: translateY(-6px) rotateY(2deg);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.15);
    transition: all 0.4s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  }
  
  /* Related cards with magnetic effect */
  .related-card:hover {
    transform: translateY(-8px) scale(1.03);
    box-shadow: 0 25px 50px rgba(59, 130, 246, 0.25);
    transition: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  }
  
  /* Brand logo interaction */
  .brand-link:hover .brand-emoji {
    animation: dna-spin 0.8s ease-in-out;
  }
}

/* Reduce motion for users who prefer it */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  
  /* Disable parallax and complex animations */
  .parallax-bg {
    transform: none !important;
  }
  
  .hero-emoji,
  .feature-card,
  .related-card {
    animation: none !important;
  }
  
  /* Keep essential feedback for interactions */
  .btn:hover,
  .upload-area:hover {
    transform: none !important;
    transition: background-color 0.2s ease, border-color 0.2s ease !important;
  }
}

/* Performance optimizations */
.feature-card,
.related-card,
.btn,
.upload-area {
  will-change: transform;
  backface-visibility: hidden;
  perspective: 1000px;
}

/* Force hardware acceleration for smooth animations */
@media (min-width: 1024px) {
  .parallax-bg,
  .hero-section::before {
    transform: translate3d(0, 0, 0);
    will-change: transform;
  }
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  .btn,
  .form-control,
  .model-card {
    border: 2px solid currentColor;
  }
}

/* Clean hero section */
.hero-section {
  position: relative;
}


.hero-emoji {
  display: inline-block;
  font-size: 4rem;
  animation: float-gentle 4s ease-in-out infinite;
  transition: all 0.3s ease;
}

.hero-emoji:hover {
  animation: glow-pulse 1s ease-in-out;
  transform: scale(1.1);
}

.hero-title {
  background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
  background-size: 200% 200%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: text-shimmer 3s ease-in-out infinite;
  position: relative;
}

.hero-description {
  font-size: 18px;
  line-height: 1.6;
  color: var(--gray-600);
  max-width: 800px;
  margin: 20px auto 32px;
  font-weight: 400;
  opacity: 0;
  animation: bounce-in-top 1s ease-out 0.5s forwards;
}

@media (max-width: 768px) {
  .hero-description {
    font-size: 16px;
    margin: 16px auto 24px;
    max-width: 100%;
    padding: 0 16px;
  }
}

/* Enhanced semantic markup styling for better accessibility and SEO */
.article-subtitle {
  font-size: 20px;
  line-height: 1.5;
  color: var(--gray-600);
  margin-bottom: 24px;
}

/* Improved keyword density visualization */
.semantic-keyword {
  font-weight: 500;
  color: var(--primary-600);
}

/* Dark mode support for system preference */
@media (prefers-color-scheme: dark) {
  :root {
    --gray-50: #1f2937;
    --gray-100: #374151;
    --gray-200: #4b5563;
    --gray-300: #6b7280;
    --gray-400: #9ca3af;
    --gray-500: #d1d5db;
    --gray-600: #e5e7eb;
    --gray-700: #f3f4f6;
    --gray-800: #f9fafb;
    --gray-900: #ffffff;
  }
  
  .hero-description {
    color: var(--gray-300);
  }
  
  .semantic-keyword {
    color: var(--primary-400);
  }
}
  
  body {
    background-color: var(--gray-50);
    color: var(--gray-900);
  }
  
  .card,
  .modal-content,
  .model-card {
    background-color: var(--gray-100);
    border-color: var(--gray-300);
  }
}

/* FAQ Page Styles */
.faq-container {
  max-width: 1000px;
  margin: 0 auto;
  padding: 40px 20px;
}

.faq-grid {
  display: grid;
  gap: 40px;
}

.faq-category {
  background: white;
  border-radius: 12px;
  padding: 32px;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
  border: 1px solid var(--gray-200);
}

.faq-category h2 {
  color: var(--primary-600);
  font-size: 24px;
  font-weight: 700;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--primary-100);
  display: flex;
  align-items: center;
  gap: 8px;
}

.faq-item {
  margin-bottom: 20px;
  border: 1px solid var(--gray-200);
  border-radius: 8px;
  overflow: hidden;
  transition: all 0.3s ease;
}

.faq-item:hover {
  border-color: var(--primary-300);
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.1);
}

.faq-item h3 {
  background: var(--gray-50);
  margin: 0;
  padding: 20px 24px;
  font-size: 18px;
  font-weight: 600;
  color: var(--gray-800);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.3s ease;
  user-select: none;
}

.faq-item h3:hover {
  background: var(--primary-50);
  color: var(--primary-700);
}

.faq-item h3::after {
  content: '+';
  font-size: 24px;
  font-weight: 300;
  color: var(--primary-500);
  transition: transform 0.3s ease;
}

.faq-item.active h3 {
  background: var(--primary-100);
  color: var(--primary-800);
}

.faq-item.active h3::after {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}

.faq-answer > div {
  padding: 24px;
  background: white;
  border-top: 1px solid var(--gray-200);
}

.faq-answer p {
  margin-bottom: 16px;
  line-height: 1.6;
  color: var(--gray-700);
}

.faq-answer ul, .faq-answer ol {
  margin-left: 20px;
  margin-bottom: 16px;
}

.faq-answer li {
  margin-bottom: 8px;
  line-height: 1.5;
  color: var(--gray-600);
}

.faq-answer strong {
  color: var(--primary-700);
  font-weight: 600;
}

.model-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

.model-grid > div {
  background: var(--gray-50);
  padding: 12px;
  border-radius: 6px;
  font-size: 14px;
  border-left: 3px solid var(--primary-400);
}

.code-example {
  background: var(--gray-900);
  color: var(--gray-100);
  padding: 16px;
  border-radius: 8px;
  margin-top: 16px;
  overflow-x: auto;
}

.code-example pre {
  margin: 0;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.4;
}

.breadcrumb {
  margin-bottom: 20px;
  padding: 12px 0;
}

.breadcrumb ol {
  display: flex;
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 14px;
}

.breadcrumb li {
  display: flex;
  align-items: center;
}

.breadcrumb li:not(:last-child)::after {
  content: '>';
  margin: 0 8px;
  color: var(--gray-400);
}

.breadcrumb a {
  color: var(--primary-600);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--primary-800);
  text-decoration: underline;
}

.breadcrumb span[aria-current="page"] {
  color: var(--gray-600);
  font-weight: 500;
}

.cta-section {
  background: linear-gradient(135deg, var(--primary-500), var(--primary-600));
  color: white;
  padding: 60px 40px;
  border-radius: 16px;
  margin: 60px 0 0 0;
}

.cta-section h2 {
  font-size: 32px;
  font-weight: 700;
  margin-bottom: 16px;
  color: white;
}

.cta-section p {
  font-size: 18px;
  margin-bottom: 32px;
  opacity: 0.9;
}

.cta-section .btn {
  margin: 0 8px;
  padding: 14px 28px;
  font-size: 16px;
  font-weight: 600;
}

.btn-outline {
  background: transparent;
  border: 2px solid white;
  color: white;
}

.btn-outline:hover {
  background: white;
  color: var(--primary-600);
}

/* Mobile optimizations for FAQ */
@media (max-width: 768px) {
  .faq-container {
    padding: 20px 16px;
  }
  
  .faq-category {
    padding: 20px;
  }
  
  .faq-item h3 {
    padding: 16px 20px;
    font-size: 16px;
  }
  
  .faq-answer > div {
    padding: 20px;
  }
  
  .model-grid {
    grid-template-columns: 1fr;
  }
  
  .cta-section {
    padding: 40px 20px;
    margin: 40px 0 0 0;
  }
  
  .cta-section h2 {
    font-size: 24px;
  }
  
  .cta-section .btn {
    display: block;
    width: 100%;
    margin: 8px 0;
  }
}

/* Article and Long-form Content Styles */
.article-header {
  text-align: center;
  margin-bottom: 40px;
  padding: 60px 0;
  background: linear-gradient(135deg, var(--primary-50), var(--primary-100));
  border-radius: 16px;
}

.article-header h1 {
  font-size: 42px;
  font-weight: 800;
  color: var(--primary-900);
  margin-bottom: 16px;
  line-height: 1.2;
}

.article-subtitle {
  font-size: 20px;
  color: var(--gray-600);
  margin-bottom: 24px;
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.article-meta {
  display: flex;
  justify-content: center;
  gap: 24px;
  font-size: 14px;
  color: var(--gray-500);
  flex-wrap: wrap;
}

.toc-section {
  background: var(--gray-50);
  padding: 32px;
  border-radius: 12px;
  margin-bottom: 40px;
  border: 1px solid var(--gray-200);
}

.toc-section h2 {
  color: var(--primary-700);
  font-size: 24px;
  margin-bottom: 20px;
}

.toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 12px;
}

.toc-list li {
  padding: 0;
}

.toc-list a {
  display: block;
  padding: 12px 16px;
  color: var(--primary-600);
  text-decoration: none;
  border-radius: 6px;
  transition: all 0.3s ease;
  font-weight: 500;
}

.toc-list a:hover {
  background: var(--primary-100);
  color: var(--primary-800);
  transform: translateX(4px);
}

.article-content {
  max-width: 1000px;
  margin: 0 auto;
  line-height: 1.7;
}

.content-section {
  margin-bottom: 50px;
  padding-bottom: 30px;
  border-bottom: 1px solid var(--gray-200);
}

.content-section:last-child {
  border-bottom: none;
}

.content-section h2 {
  font-size: 32px;
  font-weight: 700;
  color: var(--primary-800);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--primary-200);
}

.content-section h3 {
  font-size: 24px;
  font-weight: 600;
  color: var(--gray-800);
  margin-bottom: 16px;
  margin-top: 32px;
}

.content-section p {
  margin-bottom: 18px;
  color: var(--gray-700);
}

.content-section ul {
  margin-bottom: 20px;
  padding-left: 20px;
}

.content-section li {
  margin-bottom: 8px;
  color: var(--gray-600);
}

.highlight-box {
  background: var(--primary-50);
  border-left: 4px solid var(--primary-400);
  padding: 24px;
  margin: 32px 0;
  border-radius: 0 8px 8px 0;
}

.highlight-box h3 {
  color: var(--primary-700);
  margin-top: 0;
}

/* Tool Cards Grid */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 24px;
  margin: 32px 0;
}

.tool-card {
  background: white;
  border: 2px solid var(--gray-200);
  border-radius: 12px;
  padding: 24px;
  transition: all 0.3s ease;
  position: relative;
}

.tool-card:hover {
  border-color: var(--primary-300);
  box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
  transform: translateY(-2px);
}

.tool-card.featured {
  border-color: var(--primary-400);
  background: linear-gradient(135deg, white, var(--primary-50));
  position: relative;
}

.tool-card.featured::before {
  content: '⭐ Recommended';
  position: absolute;
  top: -12px;
  left: 20px;
  background: var(--primary-500);
  color: white;
  padding: 4px 12px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
}

.tool-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 16px;
}

.tool-header h3 {
  font-size: 22px;
  font-weight: 700;
  color: var(--primary-800);
  margin: 0;
}

.tool-badges {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.badge {
  padding: 4px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
}

.badge-new { background: var(--success-200); color: var(--success-700); }
.badge-ai { background: var(--primary-200); color: var(--primary-700); }
.badge-free { background: var(--info-200); color: var(--info-700); }
.badge-established { background: var(--gray-200); color: var(--gray-700); }
.badge-popular { background: var(--warning-200); color: var(--warning-700); }
.badge-r { background: var(--error-200); color: var(--error-700); }
.badge-python { background: var(--primary-200); color: var(--primary-700); }
.badge-web { background: var(--secondary-200); color: var(--secondary-700); }
.badge-ml { background: var(--info-200); color: var(--info-700); }
.badge-deep { background: var(--primary-200); color: var(--primary-700); }

.pros-cons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin: 20px 0;
}

.pros h4, .cons h4 {
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
}

.pros ul, .cons ul {
  font-size: 13px;
  margin: 0;
  padding-left: 16px;
}

.pros li, .cons li {
  margin-bottom: 4px;
}

.tool-metrics {
  display: flex;
  justify-content: space-between;
  margin-top: 20px;
  padding-top: 16px;
  border-top: 1px solid var(--gray-200);
}

.metric {
  text-align: center;
}

.metric-label {
  display: block;
  font-size: 12px;
  color: var(--gray-500);
  margin-bottom: 4px;
}

.metric-value {
  display: block;
  font-size: 16px;
  font-weight: 700;
  color: var(--primary-700);
}

/* Comparison Table */
.table-responsive {
  overflow-x: auto;
  margin: 32px 0;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  background: white;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

.comparison-table th {
  background: var(--primary-600);
  color: white;
  padding: 16px 12px;
  text-align: left;
  font-weight: 600;
  font-size: 14px;
}

.comparison-table td {
  padding: 14px 12px;
  border-bottom: 1px solid var(--gray-200);
  font-size: 14px;
}

.comparison-table tr:hover {
  background: var(--gray-50);
}

.featured-row {
  background: var(--primary-50) !important;
  font-weight: 600;
}

.featured-row:hover {
  background: var(--primary-100) !important;
}

/* Recommendations */
.recommendations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
  margin: 32px 0;
}

.recommendation-card {
  background: white;
  border: 2px solid var(--gray-200);
  border-radius: 12px;
  padding: 24px;
  text-align: center;
  transition: all 0.3s ease;
}

.recommendation-card:hover {
  border-color: var(--primary-300);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.1);
}

.recommendation-card h3 {
  color: var(--primary-700);
  font-size: 18px;
  margin-bottom: 16px;
}

.recommendation-card p {
  margin-bottom: 12px;
  font-size: 14px;
}

/* Mobile Optimizations */
@media (max-width: 768px) {
  .article-header {
    padding: 40px 20px;
  }
  
  .article-header h1 {
    font-size: 28px;
  }
  
  .article-subtitle {
    font-size: 16px;
  }
  
  .article-meta {
    flex-direction: column;
    gap: 8px;
  }
  
  .tools-grid {
    grid-template-columns: 1fr;
  }
  
  .pros-cons {
    grid-template-columns: 1fr;
  }
  
  .tool-metrics {
    flex-direction: column;
    gap: 12px;
  }
  
  .recommendations-grid {
    grid-template-columns: 1fr;
  }
  
  .toc-list {
    grid-template-columns: 1fr;
  }
}

:root {
  /* Color System */
  --primary: #0ea5e9;
  --primary-dark: #0284c7;
  --primary-light: #38bdf8;
  --primary-50: #eff6ff;
  --primary-100: #dbeafe;
  --primary-500: #3b82f6;
  --primary-600: #2563eb;
  --primary-900: #1e3a8a;

  --secondary: #10b981;
  --secondary-dark: #059669;
  --secondary-light: #34d399;

  --accent: #f59e0b;
  --accent-light: #fbbf24;

  --success: #22c55e;
  --success-50: #f0fdf4;
  --success-200: #bbf7d0;
  --success-700: #15803d;

  --warning: #f59e0b;
  --warning-50: #fffbeb;
  --warning-200: #fde68a;
  --warning-700: #b45309;

  --error: #ef4444;
  --error-50: #fef2f2;
  --error-200: #fecaca;
  --error-700: #b91c1c;

  --info: #06b6d4;

  --primary-200: #bfdbfe;

  /* Neutral Colors */
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-400: #9ca3af;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', monospace;

  /* Spacing */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.25rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;
  --space-20: 5rem;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius: 0.5rem;
  --radius-md: 0.75rem;
  --radius-lg: 1rem;
  --radius-xl: 1.5rem;
  --radius-2xl: 2rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  --shadow-2xl: 0 25px 50px -12px rgb(0 0 0 / 0.25);

  /* Animations */
  --duration-fast: 150ms;
  --duration-normal: 300ms;
  --duration-slow: 500ms;
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);
  --ease-in-out: cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset and Base Styles */
*,
*::before,
*::after {
  box-sizing: border-box;
}

* {
  margin: 0;
  padding: 0;
}

body {
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-family: var(--font-sans);
  color: var(--gray-900);
  background: linear-gradient(135deg, var(--gray-50) 0%, #ffffff 100%);
  min-height: 100vh;
}

img,
picture,
video,
canvas,
svg {
  display: block;
  max-width: 100%;
}

input,
button,
textarea,
select {
  font: inherit;
}

p,
h1,
h2,
h3,
h4,
h5,
h6 {
  overflow-wrap: break-word;
}

[v-cloak] {
  display: none !important;
}

/* Notification Banner */
.notification-banner {
  background: white;
  border: 1px solid var(--gray-200);
  border-radius: 12px;
  padding: 16px 20px;
  margin-bottom: 24px;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
}

.notification-banner:hover {
  border-color: var(--gray-300);
  box-shadow: var(--shadow-md);
}

.notification-content {
  display: flex;
  align-items: center;
  gap: 16px;
  justify-content: space-between;
}

.notification-content i {
  color: var(--warning);
  font-size: 20px;
  flex-shrink: 0;
}

.notification-content span {
  color: var(--gray-700);
  font-size: 0.875rem;
  flex: 1;
  line-height: 1.5;
}

.notification-content .btn-sm {
  padding: 6px 16px;
  font-size: 0.875rem;
  flex-shrink: 0;
  background: var(--primary);
  color: white;
  border: none;
  font-weight: 500;
}

.notification-content .btn-sm:hover {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 2px 8px rgba(59, 130, 246, 0.2);
}

/* Responsive notification banner */
@media (max-width: 640px) {
  .notification-content {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }

  .notification-content span {
    text-align: center;
  }

  .notification-content .btn-sm {
    width: 100%;
  }
}

/* Utility Classes */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* Layout Components */
.navbar {
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--gray-200);
  position: sticky;
  top: 0;
  z-index: 50;
  transition: all var(--duration-normal) var(--ease);
}

.nav-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-6);
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.nav-brand .brand-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  color: inherit;
  transition: transform var(--duration-fast) var(--ease);
}

.nav-brand .brand-link:hover {
  transform: scale(1.02);
}

.brand-icon {
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  /* Removed background and border-radius for emoji-only logo */
}

.brand-emoji {
  font-size: 1.8rem;
  line-height: 1;
  display: block;
  text-align: center;
}

.brand-text .brand-name {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.2;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.brand-text span {
  font-size: 0.75rem;
  color: var(--gray-500);
  font-weight: 500;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

/* Main Content */
.main-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-8) var(--space-6);
  min-height: calc(100vh - 4rem);
}

/* Progress Indicator */
.progress-indicator {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-12);
  padding: var(--space-6);
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-sm);
}

.step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  position: relative;
}

.step-icon {
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-100);
  color: var(--gray-400);
  transition: all var(--duration-normal) var(--ease);
  font-size: 1.125rem;
}

.step.active .step-icon {
  background: var(--primary);
  color: white;
  transform: scale(1.1);
}

.step.completed .step-icon {
  background: var(--success);
  color: white;
}

.step-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-600);
  text-align: center;
}

.step.active .step-label {
  color: var(--primary);
  font-weight: 600;
}

.step-connector {
  width: 4rem;
  height: 2px;
  background: var(--gray-200);
  transition: background var(--duration-normal) var(--ease);
}

.step-connector.active {
  background: var(--primary);
}

/* Welcome Screen */
.welcome-screen {
  text-align: center;
}

.hero-section {
  padding: var(--space-16) 0;
}

.hero-icon {
  font-size: 4rem;
  margin-bottom: var(--space-6);
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero-emoji {
  font-size: 4rem;
  line-height: 1;
  display: block;
  text-align: center;
  margin-bottom: var(--space-2);
}

.hero-title {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1.1;
  margin-bottom: var(--space-4);
  background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-600) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--gray-600);
  margin-bottom: var(--space-12);
  max-width: 42rem;
  margin-left: auto;
  margin-right: auto;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

.feature-card {
  background: white;
  padding: var(--space-8);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-md);
  transition: all var(--duration-normal) var(--ease);
}

.feature-grid {
  opacity: 0;
  animation: bounce-in-top 1s ease-out 1s forwards;
}

.feature-card {
  opacity: 0;
  transform: translateY(30px);
  animation: card-slide-up 0.8s ease-out forwards;
  position: relative;
  overflow: hidden;
}

.feature-card:nth-child(1) { animation-delay: 1.2s; }
.feature-card:nth-child(2) { animation-delay: 1.4s; }
.feature-card:nth-child(3) { animation-delay: 1.6s; }

.feature-card::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 0.5s ease;
}

.feature-card:hover::before {
  left: 100%;
}

.feature-card:hover {
  transform: translateY(-6px) rotateY(2deg);
  box-shadow: 0 20px 40px rgba(59, 130, 246, 0.15);
}

.feature-card .feature-icon {
  transition: all 0.3s ease;
}

.feature-card:hover .feature-icon {
  transform: scale(1.1) rotateY(15deg);
  color: var(--primary);
}

@keyframes card-slide-up {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.feature-icon {
  width: 3rem;
  height: 3rem;
  background: linear-gradient(135deg, var(--primary-100) 0%, var(--secondary-100) 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.5rem;
  margin: 0 auto var(--space-4);
}

.feature-card h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--gray-900);
}

.feature-card p {
  color: var(--gray-600);
  line-height: 1.6;
}

/* Content Cards */
.step-content {
  max-width: 800px;
  margin: 0 auto;
}

.content-card {
  background: white;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
  transition: all var(--duration-normal) var(--ease);
}

.card-header {
  padding: var(--space-8);
  border-bottom: 1px solid var(--gray-100);
  background: linear-gradient(135deg, var(--gray-50) 0%, white 100%);
}

.card-title {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.card-title i {
  color: var(--primary);
}

.card-subtitle {
  color: var(--gray-600);
  font-size: 1.125rem;
}

.card-body {
  padding: var(--space-8);
}

.card-footer {
  padding: var(--space-6) var(--space-8);
  border-top: 1px solid var(--gray-100);
  background: var(--gray-50);
}

.footer-actions {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
}

/* Upload Area */
.upload-area {
  border: 2px dashed var(--gray-300);
  border-radius: var(--radius-xl);
  padding: var(--space-12);
  text-align: center;
  transition: all var(--duration-normal) var(--ease);
  position: relative;
  overflow: hidden;
  margin-bottom: var(--space-8);
  cursor: pointer;
}

.upload-area:hover:not(.has-file) {
  border-color: var(--gray-400);
  background: var(--gray-50);
}

.upload-area.drag-over {
  border-color: var(--primary);
  background: var(--primary-50);
  transform: scale(1.02);
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.2);
  animation: drag-bounce 0.6s ease-in-out;
}

.upload-area.has-file {
  border-color: var(--success);
  background: var(--success-50, rgba(34, 197, 94, 0.05));
  animation: success-glow 1s ease-out;
}

@keyframes drag-bounce {
  0%, 100% { transform: scale(1.02); }
  50% { transform: scale(1.05); }
}

@keyframes success-glow {
  0% { 
    box-shadow: 0 0 0 rgba(34, 197, 94, 0.4);
    transform: scale(1);
  }
  50% { 
    box-shadow: 0 0 20px rgba(34, 197, 94, 0.4);
    transform: scale(1.02);
  }
  100% { 
    box-shadow: 0 0 0 rgba(34, 197, 94, 0);
    transform: scale(1);
  }
}

.upload-icon {
  transition: all 0.3s ease;
}

.upload-area:hover .upload-icon {
  transform: translateY(-5px) scale(1.1);
  color: var(--primary);
}

.upload-area.uploading {
  border-color: var(--primary);
  background: var(--primary-50);
}

.upload-area.has-file {
  border-color: var(--success);
  background: var(--success-50);
}

.upload-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.upload-icon {
  font-size: 4rem;
  color: var(--gray-400);
  margin-bottom: var(--space-4);
}

.upload-content h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-900);
}

.upload-content p {
  color: var(--gray-600);
  margin-bottom: var(--space-6);
}

.upload-progress {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.progress-ring {
  width: 4rem;
  height: 4rem;
  position: relative;
}

.progress-circle {
  width: 100%;
  height: 100%;
  border: 4px solid var(--primary-100);
  border-top: 4px solid var(--primary);
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% {
    transform: rotate(0deg);
  }

  100% {
    transform: rotate(360deg);
  }
}

.upload-success {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.success-icon {
  font-size: 3rem;
  color: var(--success);
}

.file-info {
  background: var(--gray-50);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  margin: var(--space-4) 0;
}

.file-detail {
  display: flex;
  justify-content: space-between;
  margin-bottom: var(--space-2);
}

.file-detail:last-child {
  margin-bottom: 0;
}

.file-detail .label {
  font-weight: 500;
  color: var(--gray-600);
}

.file-detail .value {
  color: var(--gray-900);
  font-family: var(--font-mono);
}

/* Info Section */
.info-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.info-card {
  background: var(--gray-50);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--gray-200);
}

.info-header {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
}

.info-header i {
  color: var(--primary);
}

.info-header h4 {
  font-weight: 600;
  color: var(--gray-900);
}

.format-list {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.format-tag {
  background: var(--primary-100);
  color: var(--primary-600);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius);
  font-size: 0.75rem;
  font-weight: 500;
  font-family: var(--font-mono);
}

/* Preview Section */
.preview-section {
  margin-top: var(--space-8);
}

.preview-title {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  margin-bottom: var(--space-4);
  font-weight: 600;
  color: var(--gray-900);
}

.preview-title i {
  color: var(--primary);
}

.preview-table {
  border: 1px solid var(--gray-200);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.preview-table table {
  width: 100%;
  border-collapse: collapse;
}

.preview-table th {
  background: var(--gray-50);
  padding: var(--space-3) var(--space-4);
  text-align: left;
  font-weight: 600;
  color: var(--gray-900);
  border-bottom: 1px solid var(--gray-200);
}

.preview-table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-600);
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.preview-table tr:last-child td {
  border-bottom: none;
}

.preview-table tr:hover {
  background: var(--gray-50);
}

/* Configuration Sections */
.config-section {
  margin-bottom: var(--space-10);
}

.section-title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--gray-100);
}

.section-title i {
  color: var(--primary);
}

/* Form Components */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.form-group {
  margin-bottom: var(--space-6);
}

/* Tissue Selection */
.tissue-input-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.predefined-tissues {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.tissue-tag {
  padding: var(--space-2) var(--space-3);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius);
  background: white;
  color: var(--gray-700);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease);
  white-space: nowrap;
}

.tissue-tag:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.tissue-tag.selected {
  border-color: var(--primary);
  background: var(--primary);
  color: white;
  box-shadow: var(--shadow-md);
}

.tissue-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.clear-tissue {
  position: absolute;
  right: var(--space-3);
  background: none;
  border: none;
  color: var(--gray-400);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease);
}

.clear-tissue:hover {
  color: var(--error);
  background: var(--gray-50);
}

/* Species Input Styles */
.species-input-container {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.predefined-species {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-2);
}

.species-tag {
  padding: var(--space-2) var(--space-3);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius);
  background: white;
  color: var(--gray-700);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease);
  white-space: nowrap;
}

.species-tag:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-sm);
}

.species-tag.selected {
  border-color: var(--primary);
  background: var(--primary);
  color: white;
  box-shadow: var(--shadow-md);
}

.species-input-wrapper {
  position: relative;
  display: flex;
  align-items: center;
}

.clear-species {
  position: absolute;
  right: var(--space-3);
  background: none;
  border: none;
  color: var(--gray-400);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius-sm);
  transition: all var(--duration-fast) var(--ease);
}

.clear-species:hover {
  color: var(--error);
  background: var(--gray-50);
}

.form-label {
  display: block;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.form-label i {
  color: var(--primary);
}

/* API Key Help Link */
.api-key-help-link {
  margin-left: var(--space-2);
  color: var(--gray-500);
  font-size: 0.875rem;
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease);
}

.api-key-help-link:hover {
  color: var(--primary);
}

.api-key-help-link i {
  font-size: 0.75rem;
}

.label-value {
  margin-left: auto;
  background: var(--primary-100);
  color: var(--primary-600);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius);
  font-size: 0.75rem;
  font-family: var(--font-mono);
}

.form-input {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-lg);
  font-size: 1rem;
  transition: all var(--duration-normal) var(--ease);
  background: white;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-100);
}

.select-wrapper {
  position: relative;
}

.form-select {
  width: 100%;
  padding: var(--space-3) var(--space-10) var(--space-3) var(--space-4);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-lg);
  font-size: 1rem;
  background: white;
  cursor: pointer;
  appearance: none;
  transition: all var(--duration-normal) var(--ease);
}

.form-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-100);
}

.select-arrow {
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  color: var(--gray-400);
  pointer-events: none;
}

.input-wrapper {
  position: relative;
}

.input-action {
  position: absolute;
  right: var(--space-3);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  color: var(--gray-400);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius);
  transition: color var(--duration-fast) var(--ease);
}

.input-action:hover {
  color: var(--gray-600);
}

.form-range {
  width: 100%;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--gray-200);
  appearance: none;
  cursor: pointer;
}

.form-range::-webkit-slider-thumb {
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  background: var(--primary);
  cursor: pointer;
  box-shadow: var(--shadow-md);
  transition: all var(--duration-fast) var(--ease);
}

.form-range::-webkit-slider-thumb:hover {
  transform: scale(1.1);
}

.form-help {
  margin-top: var(--space-2);
  font-size: 0.875rem;
  color: var(--gray-500);
}

/* Model Selection */
.model-grid {
  display: grid;
  gap: var(--space-4);
}

.model-card {
  border: 2px solid var(--gray-200);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  transition: all var(--duration-normal) var(--ease);
  background: white;
}

.model-card.selected {
  border-color: var(--primary);
  background: var(--primary-50);
}

.model-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  margin-bottom: var(--space-4);
}

.model-info {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.model-icon {
  width: 3rem;
  height: 3rem;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  color: white;
}

.model-icon.openai {
  background: linear-gradient(135deg, #00a67e 0%, #00d4aa 100%);
}

.model-icon.anthropic {
  background: linear-gradient(135deg, #d4a574 0%, #f0c987 100%);
}

.model-icon.gemini {
  background: linear-gradient(135deg, #4285f4 0%, #34a853 100%);
}

.model-icon.openrouter {
  background: linear-gradient(135deg, #7c3aed 0%, #a855f7 100%);
}

.model-icon.grok {
  background: linear-gradient(135deg, #1da1f2 0%, #0084b4 100%);
}

.model-icon.deepseek {
  background: linear-gradient(135deg, #1e3a8a 0%, #3b82f6 100%);
}

.model-icon.qwen {
  background: linear-gradient(135deg, #ff6900 0%, #fcb900 100%);
}

.model-icon.zhipu {
  background: linear-gradient(135deg, #2563eb 0%, #7c3aed 100%);
}

.model-icon.minimax {
  background: linear-gradient(135deg, #059669 0%, #10b981 100%);
}

.model-icon.stepfun {
  background: linear-gradient(135deg, #dc2626 0%, #f59e0b 100%);
}

.model-details h4 {
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--space-1);
}

.model-details {
  flex: 1;
  min-width: 0;
  overflow: hidden;
}

.model-count {
  font-size: 0.875rem;
  color: var(--gray-500);
  display: block;
  margin-bottom: 2px;
}

/* Provider information badges */
.provider-info {
  margin-top: 6px;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  clear: both;
  overflow: hidden;
  width: 100%;
  position: relative;
  z-index: 1;
}

.info-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 500;
  line-height: 1.4;
  white-space: nowrap;
  text-overflow: ellipsis;
  max-width: 100%;
  box-sizing: border-box;
  position: relative;
  overflow: hidden;
  background-clip: padding-box;
}

.info-badge.free-tier {
  background: var(--success-50);
  color: var(--success-700);
  border: 1px solid var(--success-200);
}

.info-badge.new-user {
  background: var(--primary-50);
  color: var(--primary-600);
  border: 1px solid var(--primary-200);
}

.model-toggle {
  position: relative;
}

.toggle-checkbox {
  display: none;
}

.toggle-slider {
  width: 3rem;
  height: 1.5rem;
  background: var(--gray-300);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background var(--duration-normal) var(--ease);
  position: relative;
}

.toggle-slider::before {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 1.25rem;
  height: 1.25rem;
  background: white;
  border-radius: var(--radius-full);
  transition: transform var(--duration-normal) var(--ease);
  box-shadow: var(--shadow-sm);
}

.toggle-checkbox:checked+.toggle-slider {
  background: var(--primary);
}

.toggle-checkbox:checked+.toggle-slider::before {
  transform: translateX(1.5rem);
}

.model-config {
  margin-top: var(--space-6);
  padding-top: var(--space-6);
  border-top: 1px solid var(--gray-200);
  display: grid;
  gap: var(--space-4);
}

/* Consensus Tip Styles */
.consensus-tip {
  display: flex;
  align-items: flex-start;
  background: rgba(59, 130, 246, 0.05);
  border: 1px solid rgba(59, 130, 246, 0.1);
  border-radius: 8px;
  padding: 16px;
  margin-bottom: 24px;
  gap: 12px;
  animation: fadeIn var(--duration-normal) var(--ease);
}

.consensus-tip .tip-icon {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary);
  border-radius: 50%;
  color: white;
  font-size: 16px;
}

.consensus-tip .tip-content {
  flex: 1;
}

.consensus-tip .tip-content strong {
  display: block;
  color: var(--gray-900);
  font-weight: 600;
  margin-bottom: 4px;
  font-size: 0.875rem;
}

.consensus-tip .tip-content p {
  margin: 0;
  color: var(--gray-600);
  font-size: 0.875rem;
  line-height: 1.5;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Model Selection Grid Styles */
.model-selection-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-3);
  margin-top: var(--space-3);
}

.model-checkbox-item {
  display: flex;
  align-items: center;
}

.model-checkbox-label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  cursor: pointer;
  padding: var(--space-2) var(--space-3);
  border: 2px solid var(--gray-200);
  border-radius: var(--radius);
  background: white;
  transition: all var(--duration-fast) var(--ease);
  width: 100%;
  font-size: 0.875rem;
  font-weight: 500;
}

.model-checkbox-label:hover {
  border-color: var(--primary);
  background: var(--primary-50);
}

.model-checkbox {
  display: none;
}

.model-checkbox-custom {
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid var(--gray-300);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  background: white;
  transition: all var(--duration-fast) var(--ease);
}

.model-checkbox:checked+.model-checkbox-custom {
  background: var(--primary);
  border-color: var(--primary);
  color: white;
}

.model-checkbox-custom i {
  font-size: 0.75rem;
  opacity: 0;
  transition: opacity var(--duration-fast) var(--ease);
}

.model-checkbox:checked+.model-checkbox-custom i {
  opacity: 1;
}

.model-checkbox:checked~.model-name {
  color: var(--primary);
  font-weight: 600;
}

.model-name {
  flex: 1;
  transition: all var(--duration-fast) var(--ease);
}

.selected-models-summary {
  margin-top: var(--space-3);
  padding: var(--space-2) var(--space-3);
  background: var(--primary-50);
  border: 1px solid var(--primary-200);
  border-radius: var(--radius);
}

.summary-text {
  font-size: 0.875rem;
  color: var(--primary-600);
  font-weight: 500;
}

/* Processing Styles */
.processing-card {
  text-align: center;
}

.processing-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-8);
}

.processing-animation {
  position: relative;
  margin-bottom: var(--space-8);
  display: flex;
  justify-content: center;
  align-items: center;
  height: 12rem;
}

.brain-icon {
  position: relative;
  width: 8rem;
  height: 8rem;
  display: flex;
  justify-content: center;
  align-items: center;
}

.brain-icon>i {
  font-size: 4rem;
  color: var(--primary);
  z-index: 10;
  position: relative;
}

.pulse-ring {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  border: 2px solid var(--primary-200);
  border-radius: 50%;
  animation: brain-pulse 2s ease-in-out infinite;
  pointer-events: none;
}

.pulse-ring-2 {
  position: absolute;
  top: -1rem;
  left: -1rem;
  right: -1rem;
  bottom: -1rem;
  border: 1px solid var(--primary-100);
  border-radius: 50%;
  animation: brain-pulse 2s ease-in-out infinite;
  animation-delay: 0.5s;
  pointer-events: none;
}

@keyframes brain-pulse {
  0% {
    transform: scale(0.8);
    opacity: 1;
  }

  50% {
    transform: scale(1.2);
    opacity: 0.3;
  }

  100% {
    transform: scale(0.8);
    opacity: 1;
  }
}

.processing-status h3 {
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--space-4);
}

.status-details {
  display: grid;
  gap: var(--space-3);
  text-align: left;
  background: var(--gray-50);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-6);
}

.detail-item {
  display: flex;
  justify-content: space-between;
}

.detail-label {
  font-weight: 500;
  color: var(--gray-600);
}

.detail-value {
  color: var(--gray-900);
  font-family: var(--font-mono);
}

.progress-bar {
  width: 100%;
  height: 8px;
  background: var(--gray-200);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: var(--radius-full);
  transition: width var(--duration-slow) var(--ease);
  animation: shimmer 2s ease-in-out infinite;
}

/* Phase-specific progress colors */
.progress-fill.progress-annotation {
  background: linear-gradient(90deg, #3b82f6 0%, #60a5fa 100%);
}

.progress-fill.progress-consensus {
  background: linear-gradient(90deg, #f59e0b 0%, #fbbf24 100%);
}

.progress-fill.progress-controversy {
  background: linear-gradient(90deg, #ef4444 0%, #f87171 100%);
}

.progress-fill.progress-starting {
  background: linear-gradient(90deg, #6b7280 0%, #9ca3af 100%);
}

.progress-fill.progress-processing {
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
}

.progress-fill.progress-default {
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
}

/* Enhanced progress indicators */
.progress-bar {
  position: relative;
  overflow: hidden;
}

.progress-fill {
  position: relative;
}

.progress-fill::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(
    90deg,
    transparent,
    rgba(255, 255, 255, 0.4),
    transparent
  );
  animation: progress-shine 2s ease-in-out infinite;
}

@keyframes progress-shine {
  0% { transform: translateX(-100%); }
  50% { transform: translateX(100%); }
  100% { transform: translateX(100%); }
}

/* Enhanced processing animation */
.processing-animation {
  position: relative;
}

.brain-icon {
  position: relative;
  z-index: 2;
}

.brain-icon::after {
  content: '🧬';
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 1.5rem;
  opacity: 0.3;
  animation: dna-orbit 4s linear infinite;
}

@keyframes dna-orbit {
  0% { 
    transform: translate(-50%, -50%) rotate(0deg) translateX(60px) rotate(0deg);
    opacity: 0.3;
  }
  50% { 
    opacity: 0.8;
  }
  100% { 
    transform: translate(-50%, -50%) rotate(360deg) translateX(60px) rotate(-360deg);
    opacity: 0.3;
  }
}

@keyframes shimmer {
  0% {
    opacity: 1;
  }

  50% {
    opacity: 0.7;
  }

  100% {
    opacity: 1;
  }
}

/* Progress info styling */
.progress-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 8px;
  font-size: 14px;
}

.progress-percentage {
  font-weight: 600;
  color: var(--gray-900);
}

.progress-phase-label {
  font-size: 12px;
  color: var(--gray-600);
  background: var(--gray-100);
  padding: 2px 8px;
  border-radius: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Results Styles */
.results-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.summary-card {
  background: white;
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
  display: flex;
  align-items: center;
  gap: var(--space-4);
  transition: all var(--duration-normal) var(--ease);
}

.summary-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.summary-icon {
  width: 3rem;
  height: 3rem;
  background: linear-gradient(135deg, var(--primary-100) 0%, var(--secondary-100) 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  font-size: 1.25rem;
}

.summary-text h4 {
  font-size: 1.875rem;
  font-weight: 700;
  color: var(--gray-900);
  line-height: 1;
}

.summary-text span {
  font-size: 0.875rem;
  color: var(--gray-600);
}

.results-table-container {
  background: white;
  border-radius: var(--radius-xl);
  border: 1px solid var(--gray-200);
  overflow: hidden;
}

.table-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-6);
  border-bottom: 1px solid var(--gray-200);
  background: var(--gray-50);
}

.table-header h4 {
  font-weight: 600;
  color: var(--gray-900);
}

.table-actions {
  display: flex;
  gap: var(--space-2);
}

.results-table {
  overflow-x: auto;
}

.results-table table {
  width: 100%;
  border-collapse: collapse;
}

.results-table th {
  background: var(--gray-50);
  padding: var(--space-4);
  text-align: left;
  font-weight: 600;
  color: var(--gray-900);
  border-bottom: 1px solid var(--gray-200);
  white-space: nowrap;
}

.results-table td {
  padding: var(--space-4);
  border-bottom: 1px solid var(--gray-100);
  color: var(--gray-600);
}

.results-table tr:last-child td {
  border-bottom: none;
}

.results-table tr:hover {
  background: var(--gray-50);
}

.cluster-id {
  font-family: var(--font-mono);
  font-weight: 600;
  color: var(--gray-900);
}

.cell-type-badge {
  background: var(--primary-100);
  color: var(--primary-600);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-lg);
  font-weight: 500;
  display: inline-block;
}

.consensus-score {
  min-width: 150px;
}

.score-bar {
  position: relative;
  background: var(--gray-200);
  height: 1.5rem;
  border-radius: var(--radius-full);
  overflow: hidden;
}

.score-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: var(--radius-full);
  transition: width var(--duration-slow) var(--ease);
}

.score-text {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 0.75rem;
  font-weight: 600;
  color: white;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.5);
}

.entropy-score {
  font-family: var(--font-mono);
  color: var(--gray-900);
}

.confidence-badge {
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius);
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
}

.confidence-badge.high {
  background: var(--success-100);
  color: var(--success-600);
}

.confidence-badge.medium {
  background: var(--warning-100);
  color: var(--warning-600);
}

.confidence-badge.low {
  background: var(--error-100);
  color: var(--error-600);
}

/* Button Styles */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border: 1px solid transparent;
  border-radius: var(--radius-lg);
  font-size: 0.875rem;
  font-weight: 500;
  text-decoration: none;
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease);
  background: transparent;
  white-space: nowrap;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
  transform: none;
}

.btn-small {
  padding: var(--space-2) var(--space-4);
  font-size: 0.75rem;
}

.btn-large {
  padding: var(--space-4) var(--space-8);
  font-size: 1.125rem;
}

.btn-primary {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  border-color: var(--gray-300);
  color: var(--gray-700);
}

.btn-outline:hover:not(:disabled) {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-50);
}

.btn-ghost {
  color: var(--gray-600);
}

.btn-ghost:hover:not(:disabled) {
  background: var(--gray-100);
  color: var(--gray-900);
}

.btn-secondary {
  background: var(--gray-200);
  border: 1px solid var(--gray-300);
  color: var(--gray-700);
}

.btn-secondary:hover:not(:disabled) {
  background: var(--gray-300);
  border-color: var(--gray-400);
  color: var(--gray-800);
}

.btn-text {
  display: none;
}

/* Light primary button for secondary downloads */
.btn-primary-light {
  background: var(--primary-50);
  color: var(--primary-600);
  border: 1px solid var(--primary-200);
}

.btn-primary-light:hover:not(:disabled) {
  background: var(--primary-100);
  border-color: var(--primary-500);
  color: var(--primary-900);
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

/* Outline primary button */
.btn-outline-primary {
  background: white;
  color: var(--primary);
  border: 2px solid var(--primary);
}

.btn-outline-primary:hover:not(:disabled) {
  background: var(--primary-50);
  color: var(--primary-dark);
  border-color: var(--primary-dark);
  transform: translateY(-1px);
}

/* Simplified Results Actions */
.results-actions-simple {
  padding: var(--space-6);
}

.actions-row {
  display: flex;
  gap: var(--space-3);
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
}

.actions-divider {
  width: 1px;
  height: 24px;
  background: var(--gray-300);
  margin: 0 var(--space-2);
}

/* Ensure all buttons have consistent size */
.results-actions-simple .btn {
  min-width: 140px;
  font-size: 0.875rem;
}

.results-actions-simple .btn i {
  font-size: 1rem;
}

/* Mobile responsive */
@media (max-width: 768px) {
  .results-actions-simple {
    padding: var(--space-4);
  }

  .actions-row {
    flex-direction: column;
    gap: var(--space-2);
  }

  .actions-divider {
    width: 100%;
    height: 1px;
    margin: var(--space-2) 0;
  }

  .results-actions-simple .btn {
    width: 100%;
    justify-content: center;
  }
}

/* Alert Styles */
.alert {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  margin: var(--space-6) 0;
  position: relative;
}

.alert-error {
  background: var(--error-50);
  border: 1px solid var(--error-200);
  color: var(--error-700);
}

.alert-warning {
  background: var(--warning-50);
  border: 1px solid var(--warning-200);
  color: var(--warning-700);
}

.alert-content h4 {
  font-weight: 600;
  margin-bottom: var(--space-1);
}

.alert-close {
  position: absolute;
  top: var(--space-3);
  right: var(--space-3);
  background: none;
  border: none;
  color: inherit;
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius);
  opacity: 0.7;
  transition: opacity var(--duration-fast) var(--ease);
}

.alert-close:hover {
  opacity: 1;
}

/* Footer */
.footer {
  background: var(--gray-900);
  color: var(--gray-300);
  margin-top: var(--space-20);
}

.footer-content {
  max-width: 1200px;
  margin: 0 auto;
  padding: var(--space-16) var(--space-6) var(--space-8);
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-8);
}

.footer-section h4 {
  color: white;
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.footer-section ul {
  list-style: none;
}

.footer-section li {
  margin-bottom: var(--space-2);
}

.footer-section a {
  color: var(--gray-400);
  text-decoration: none;
  transition: color var(--duration-fast) var(--ease);
}

.footer-section a:hover {
  color: var(--primary-light);
}

.footer-bottom {
  border-top: 1px solid var(--gray-700);
  padding: var(--space-6);
  text-align: center;
  color: var(--gray-500);
}

/* Loading Overlay */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-4);
  z-index: 9999;
  color: white;
}

.loading-spinner {
  position: relative;
  width: 3rem;
  height: 3rem;
}

.spinner-ring {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 2px solid transparent;
  border-top: 2px solid white;
  border-radius: var(--radius-full);
  animation: spin 1s linear infinite;
}

.spinner-ring:nth-child(2) {
  animation-delay: 0.3s;
  opacity: 0.7;
}

.spinner-ring:nth-child(3) {
  animation-delay: 0.6s;
  opacity: 0.4;
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  top: var(--space-6);
  right: var(--space-6);
  z-index: 1000;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.toast {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  padding: var(--space-4);
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  min-width: 300px;
  max-width: 400px;
  border-left: 4px solid;
  animation: slideIn 0.3s ease-out;
}

.toast.success {
  border-left-color: var(--success);
}

.toast.error {
  border-left-color: var(--error);
}

.toast.warning {
  border-left-color: var(--warning);
}

.toast.info {
  border-left-color: var(--info);
}

@keyframes slideIn {
  from {
    transform: translateX(100%);
    opacity: 0;
  }

  to {
    transform: translateX(0);
    opacity: 1;
  }
}

.toast-content h4 {
  font-weight: 600;
  color: var(--gray-900);
  margin-bottom: var(--space-1);
}

.toast-content p {
  color: var(--gray-600);
  font-size: 0.875rem;
}

.toast-close {
  background: none;
  border: none;
  color: var(--gray-400);
  cursor: pointer;
  padding: var(--space-1);
  border-radius: var(--radius);
  margin-left: auto;
  transition: color var(--duration-fast) var(--ease);
}

.toast-close:hover {
  color: var(--gray-600);
}

/* Responsive Design */
@media (max-width: 768px) {
  .nav-container {
    padding: 0 var(--space-4);
  }

  .nav-actions .btn-text {
    display: none;
  }

  .main-content {
    padding: var(--space-6) var(--space-4);
  }

  .hero-title {
    font-size: 2rem;
  }

  .hero-subtitle {
    font-size: 1.125rem;
  }

  .feature-grid {
    grid-template-columns: 1fr;
    gap: var(--space-6);
  }

  .progress-indicator {
    padding: var(--space-4);
  }

  .step-label {
    font-size: 0.75rem;
  }

  .step-connector {
    width: 2rem;
  }

  .card-header,
  .card-body,
  .card-footer {
    padding: var(--space-6) var(--space-4);
  }

  .form-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .model-grid {
    gap: var(--space-3);
  }

  .model-info {
    gap: var(--space-3);
  }



  .results-summary {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }

  .table-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-4);
  }

  .table-actions {
    flex-wrap: wrap;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--space-6);
    padding: var(--space-12) var(--space-4) var(--space-6);
  }

  .toast-container {
    top: var(--space-4);
    right: var(--space-4);
    left: var(--space-4);
  }

  .toast {
    min-width: auto;
  }
}

@media (max-width: 480px) {
  .brand-text span {
    display: none;
  }

  .upload-area {
    padding: var(--space-8);
  }

  .upload-icon {
    font-size: 3rem;
  }

  .footer-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    justify-content: center;
  }


}

/* Footer Update Info */
.footer-update-info {
  font-size: 0.85em;
  opacity: 0.7;
  margin-top: 4px;
}

#deployTime {
  color: inherit;
  font-weight: 400;
}

/* Ensure app takes full height */
.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

/* Mobile responsive for footer update */
@media (max-width: 768px) {
  .footer-update-info {
    margin-top: 8px;
  }
}

/* API Key 输入框样式 */
.api-key-input {
  padding-right: 100px;
  position: relative;
}

.api-key-input.is-valid {
  border-color: var(--success);
}

.api-key-input.is-valid:focus {
  border-color: var(--success);
  box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.1);
}

.api-key-input.is-invalid {
  border-color: var(--error);
}

.api-key-input.is-invalid:focus {
  border-color: var(--error);
  box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* 按钮组样式 */
.input-actions-group {
  position: absolute;
  right: 8px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: center;
  gap: 4px;
  background: rgba(249, 250, 251, 0.95);
  padding: 2px 4px;
  border-radius: 6px;
  border: 1px solid var(--gray-200);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
  z-index: 2;
}

.input-action-btn {
  background: transparent;
  border: none;
  color: var(--gray-500);
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 4px;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  min-width: 24px;
  height: 24px;
  font-size: 12px;
}

.input-action-btn:hover {
  background: var(--gray-100);
  color: var(--gray-700);
}

.input-action-btn:disabled {
  cursor: not-allowed;
  opacity: 0.5;
}

.input-action-btn.test-btn {
  color: var(--gray-500);
}

.input-action-btn.test-btn:hover:not(:disabled) {
  color: var(--success);
  background: rgba(34, 197, 94, 0.1);
}

.input-action-btn.test-btn.is-testing {
  color: var(--primary);
}

.input-action-btn.test-btn.is-valid {
  color: var(--success);
}

.input-action-btn.test-btn.is-invalid {
  color: var(--error);
}

.input-action-btn.test-btn.is-invalid:hover:not(:disabled) {
  color: var(--error);
  background: rgba(239, 68, 68, 0.1);
}

.action-divider {
  width: 1px;
  height: 16px;
  background: var(--gray-300);
  opacity: 0.6;
}

/* API测试结果样式 */
.api-test-result {
  margin-top: 8px;
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 8px;
  animation: slideIn 0.3s ease;
}

.api-test-result.success {
  background: rgba(34, 197, 94, 0.1);
  color: var(--success);
  border: 1px solid rgba(34, 197, 94, 0.2);
}

.api-test-result.error {
  background: rgba(239, 68, 68, 0.1);
  color: var(--error);
  border: 1px solid rgba(239, 68, 68, 0.2);
}

.api-test-result small {
  margin-left: auto;
  opacity: 0.7;
  font-size: 0.75rem;
}

@keyframes slideIn {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* 批量测试按钮样式 */
.batch-test-section {
  margin-top: 20px;
  padding: 16px;
  background: rgba(59, 130, 246, 0.05);
  border: 1px solid rgba(59, 130, 246, 0.1);
  border-radius: 8px;
  text-align: center;
}

.batch-test-btn {
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 8px;
  padding: 12px 24px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.batch-test-btn:hover:not(:disabled) {
  background: var(--primary-dark);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(59, 130, 246, 0.3);
}

.batch-test-btn:disabled {
  background: var(--gray-400);
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.batch-test-help {
  margin-top: 8px;
  font-size: 0.875rem;
  color: var(--gray-600);
}

/* .env File Import Banner */
.env-import-banner {
  background: white;
  border-radius: 12px;
  border: 2px solid var(--gray-200);
  padding: 20px;
  margin-bottom: 24px;
  position: relative;
  transition: all 0.3s ease;
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}

.env-import-banner:hover {
  border-color: var(--gray-300);
  box-shadow: var(--shadow-md);
}

.env-import-banner.drag-over {
  border-color: var(--primary);
  background: var(--primary-50);
  transform: scale(1.02);
  box-shadow: 0 8px 24px rgba(59, 130, 246, 0.2);
  cursor: copy;
}

.env-import-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.env-import-left {
  display: flex;
  align-items: center;
  gap: 16px;
  flex: 1;
}

.env-import-left i {
  font-size: 24px;
  color: var(--gray-600);
}

.env-import-text h4 {
  margin: 0 0 4px 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--gray-900);
}

.env-import-text p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--gray-600);
}

.env-import-right {
  flex-shrink: 0;
  display: flex;
  gap: 8px;
}

.env-import-message {
  margin-top: 12px;
  padding: 12px 16px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  animation: slideIn 0.3s ease-out;
}

.env-import-message.success {
  background: var(--success-50);
  color: var(--success-700);
  border: 1px solid var(--success-200);
}

.env-import-message.warning {
  background: var(--warning-50);
  color: var(--warning-700);
  border: 1px solid var(--warning-200);
}

.env-import-message.error {
  background: var(--error-50);
  color: var(--error-700);
  border: 1px solid var(--error-200);
}

.env-import-message i {
  font-size: 16px;
}

@keyframes slideIn {
  from {
    transform: translateY(-10px);
    opacity: 0;
  }

  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* Responsive adjustments for .env import */
@media (max-width: 640px) {
  .env-import-content {
    flex-direction: column;
    align-items: stretch;
  }

  .env-import-right {
    margin-top: 12px;
  }

  .env-import-right button {
    width: 100%;
  }
}

/* .env drag overlay */
.env-drag-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(59, 130, 246, 0.90);
  border-radius: 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: white;
  z-index: 10;
  animation: fadeIn 0.2s ease-out;
}

.env-drag-overlay i {
  font-size: 48px;
  margin-bottom: 16px;
  animation: pulse 1.5s ease-in-out infinite;
}

.env-drag-overlay p {
  font-size: 1.125rem;
  font-weight: 500;
  margin: 0;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
    opacity: 0.8;
  }

  50% {
    transform: scale(1.1);
    opacity: 1;
  }

  100% {
    transform: scale(1);
    opacity: 0.8;
  }
}

/* WeChat QR Code Modal Styles */
.wechat-modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  animation: fadeIn var(--duration-fast) var(--ease);
}

.wechat-modal {
  background: white;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-2xl);
  max-width: 400px;
  width: 90%;
  animation: slideUp var(--duration-normal) var(--ease);
}

.wechat-modal-header {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  padding: var(--space-5) var(--space-6);
  border-bottom: 1px solid var(--gray-200);
}

.wechat-modal-header h3 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-900);
  text-align: center;
}

.modal-close {
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--gray-500);
  cursor: pointer;
  padding: var(--space-2);
  transition: color var(--duration-fast) var(--ease);
}

.modal-close:hover {
  color: var(--gray-900);
}

.wechat-modal-body {
  padding: var(--space-6);
  text-align: center;
}

.wechat-qr-image {
  max-width: 280px;
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  display: block;
  margin: 0 auto;
}

.wechat-qr-note {
  margin-top: var(--space-4);
  color: var(--gray-600);
  font-size: 0.875rem;
  line-height: 1.5;
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    transform: translateY(20px);
    opacity: 0;
  }

  to {
    transform: translateY(0);
    opacity: 1;
  }
}

/* WeChat Modal Responsive */
@media (max-width: 480px) {
  .wechat-modal {
    max-width: 320px;
  }

  .wechat-qr-image {
    max-width: 240px;
  }

  .wechat-modal-header {
    padding: var(--space-4) var(--space-5);
  }

  .wechat-modal-body {
    padding: var(--space-5);
  }
}/* Related Resources Component Styles */
.related-resources-section {
    background: var(--gray-50);
    padding: 60px 40px;
    border-radius: 16px;
    margin: 60px 0;
    text-align: center;
}

.related-resources-section h2 {
    color: var(--gray-900);
    font-size: 32px;
    margin-bottom: 16px;
    font-weight: 700;
}

.related-resources-section p {
    color: var(--gray-600);
    font-size: 18px;
    margin-bottom: 40px;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
    line-height: 1.6;
}

.related-resources-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 24px;
    max-width: 1200px;
    margin: 0 auto;
}

.related-card {
    background: white;
    border: 2px solid var(--gray-200);
    border-radius: 12px;
    padding: 32px 24px;
    text-decoration: none;
    color: inherit;
    transition: all 0.3s ease;
    position: relative;
    display: block;
    text-align: center;
}

.related-card:hover {
    border-color: var(--primary-400);
    transform: translateY(-4px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
    text-decoration: none;
    color: inherit;
}

.related-card.featured {
    border-color: var(--primary-400);
    background: linear-gradient(135deg, white, var(--primary-50));
}

.related-card.featured:hover {
    border-color: var(--primary-500);
    background: linear-gradient(135deg, var(--primary-50), var(--primary-100));
}

.related-icon {
    font-size: 48px;
    margin-bottom: 20px;
    display: block;
}

.related-card h3 {
    color: var(--gray-900);
    font-size: 20px;
    font-weight: 700;
    margin: 0 0 12px;
    line-height: 1.3;
}

.related-card p {
    color: var(--gray-600);
    font-size: 14px;
    line-height: 1.5;
    margin: 0 0 20px;
    text-align: center;
}

.related-badge {
    background: var(--primary-500);
    color: white;
    padding: 6px 12px;
    border-radius: 12px;
    font-size: 12px;
    font-weight: 600;
    display: inline-block;
    margin-top: auto;
}

/* Badge color variations */
.related-card .related-badge {
    background: var(--primary-500);
}

.related-card:nth-child(2) .related-badge {
    background: var(--success-500);
}

.related-card:nth-child(3) .related-badge {
    background: var(--warning-500);
}

.related-card:nth-child(4) .related-badge {
    background: var(--info-500);
}

/* Hover effects for badges */
.related-card:hover .related-badge {
    transform: scale(1.05);
}

/* Scroll-triggered animations */
.scroll-reveal {
  opacity: 0;
  transform: translateY(50px);
  transition: all 0.8s cubic-bezier(0.175, 0.885, 0.32, 1);
}

.scroll-reveal.revealed {
  opacity: 1;
  transform: translateY(0);
}

.scroll-reveal-left {
  opacity: 0;
  transform: translateX(-50px);
  transition: all 0.8s cubic-bezier(0.175, 0.885, 0.32, 1);
}

.scroll-reveal-left.revealed {
  opacity: 1;
  transform: translateX(0);
}

.scroll-reveal-right {
  opacity: 0;
  transform: translateX(50px);
  transition: all 0.8s cubic-bezier(0.175, 0.885, 0.32, 1);
}

.scroll-reveal-right.revealed {
  opacity: 1;
  transform: translateX(0);
}

/* Enhanced related cards with scroll animation */
.related-card {
  opacity: 0;
  transform: translateY(30px) scale(0.95);
  transition: all 0.8s cubic-bezier(0.175, 0.885, 0.32, 1);
}

.related-card.revealed {
  opacity: 1;
  transform: translateY(0) scale(1);
}

.related-card.revealed:nth-child(1) { transition-delay: 0.1s; }
.related-card.revealed:nth-child(2) { transition-delay: 0.2s; }
.related-card.revealed:nth-child(3) { transition-delay: 0.3s; }
.related-card.revealed:nth-child(4) { transition-delay: 0.4s; }

/* Parallax effect for background elements */
.parallax-bg {
  transform: translateZ(0);
  will-change: transform;
}

@keyframes relatedCardSlideIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Mobile responsiveness */
@media (max-width: 768px) {
    .related-resources-section {
        padding: 40px 20px;
        margin: 40px 0;
    }
    
    .related-resources-section h2 {
        font-size: 28px;
    }
    
    .related-resources-section p {
        font-size: 16px;
        margin-bottom: 32px;
    }
    
    .related-resources-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .related-card {
        padding: 24px 20px;
    }
    
    .related-icon {
        font-size: 40px;
        margin-bottom: 16px;
    }
    
    .related-card h3 {
        font-size: 18px;
    }
}

@media (max-width: 480px) {
    .related-resources-section {
        padding: 32px 16px;
    }
    
    .related-card {
        padding: 20px 16px;
    }
    
    .related-icon {
        font-size: 36px;
        margin-bottom: 12px;
    }
}

/* ========================================
   ENHANCED GRID SYSTEM
   ======================================== */

/* Container System */
.container {
    width: 100%;
    margin: 0 auto;
    padding: 0 var(--space-4);
}

.container-sm { max-width: 640px; }
.container-md { max-width: 768px; }  
.container-lg { max-width: 1024px; }
.container-xl { max-width: 1280px; }
.container-2xl { max-width: 1536px; }

/* 12-Column Grid System */
.grid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: var(--space-4);
}

/* Grid Gap Variations */
.grid-gap-1 { gap: var(--space-1); }
.grid-gap-2 { gap: var(--space-2); }
.grid-gap-3 { gap: var(--space-3); }
.grid-gap-4 { gap: var(--space-4); }
.grid-gap-6 { gap: var(--space-6); }
.grid-gap-8 { gap: var(--space-8); }

/* Column Spans */
.col-span-1 { grid-column: span 1 / span 1; }
.col-span-2 { grid-column: span 2 / span 2; }
.col-span-3 { grid-column: span 3 / span 3; }
.col-span-4 { grid-column: span 4 / span 4; }
.col-span-5 { grid-column: span 5 / span 5; }
.col-span-6 { grid-column: span 6 / span 6; }
.col-span-7 { grid-column: span 7 / span 7; }
.col-span-8 { grid-column: span 8 / span 8; }
.col-span-9 { grid-column: span 9 / span 9; }
.col-span-10 { grid-column: span 10 / span 10; }
.col-span-11 { grid-column: span 11 / span 11; }
.col-span-12 { grid-column: span 12 / span 12; }
.col-span-full { grid-column: 1 / -1; }

/* Auto-Fit Grids for Responsive Cards */
.grid-auto-1 { grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.grid-auto-2 { grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.grid-auto-3 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.grid-auto-4 { grid-template-columns: repeat(auto-fit, minmax(400px, 1fr)); }

/* Responsive Grid Overrides */
@media (max-width: 640px) {
    .grid { grid-template-columns: 1fr; }
    
    /* Mobile column spans - everything full width */
    .sm\:col-span-full { grid-column: 1 / -1; }
    .sm\:col-span-1 { grid-column: span 1 / span 1; }
    .sm\:col-span-2 { grid-column: span 2 / span 2; }
    .sm\:col-span-6 { grid-column: span 6 / span 6; }
}

@media (min-width: 641px) and (max-width: 768px) {
    /* Tablet adjustments */
    .md\:col-span-1 { grid-column: span 1 / span 1; }
    .md\:col-span-2 { grid-column: span 2 / span 2; }
    .md\:col-span-3 { grid-column: span 3 / span 3; }
    .md\:col-span-4 { grid-column: span 4 / span 4; }
    .md\:col-span-6 { grid-column: span 6 / span 6; }
    .md\:col-span-12 { grid-column: span 12 / span 12; }
}

@media (min-width: 769px) {
    /* Desktop grid system */
    .lg\:col-span-1 { grid-column: span 1 / span 1; }
    .lg\:col-span-2 { grid-column: span 2 / span 2; }
    .lg\:col-span-3 { grid-column: span 3 / span 3; }
    .lg\:col-span-4 { grid-column: span 4 / span 4; }
    .lg\:col-span-6 { grid-column: span 6 / span 6; }
    .lg\:col-span-8 { grid-column: span 8 / span 8; }
    .lg\:col-span-9 { grid-column: span 9 / span 9; }
    .lg\:col-span-12 { grid-column: span 12 / span 12; }
}

/* Enhanced Card Component System */
.card-enhanced {
    background: white;
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--gray-100);
    transition: all var(--duration-normal) var(--ease);
    overflow: hidden;
}

.card-enhanced:hover {
    box-shadow: 0 10px 25px rgba(14, 165, 233, 0.1),
                0 6px 12px rgba(14, 165, 233, 0.05);
    border-color: var(--primary-200);
    transform: translateY(-2px);
}

.card-enhanced-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--gray-100);
    background: linear-gradient(135deg, var(--gray-50) 0%, white 100%);
}

.card-enhanced-body {
    padding: var(--space-6);
}

.card-enhanced-footer {
    padding: var(--space-4) var(--space-6);
    background: var(--gray-50);
    border-top: 1px solid var(--gray-100);
}

/* Enhanced Form Grid Systems */
.form-grid {
    display: grid;
    gap: var(--space-4);
}

.form-grid-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-4);
}

.form-grid-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: var(--space-4);
}

@media (max-width: 640px) {
    .form-grid-2,
    .form-grid-3 {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   ENHANCED INTERACTION ANIMATIONS
   ======================================== */

/* Button Loading States */
.btn-loading {
    position: relative;
    pointer-events: none;
    color: transparent !important;
}

.btn-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 16px;
    height: 16px;
    margin: -8px 0 0 -8px;
    border: 2px solid transparent;
    border-top: 2px solid currentColor;
    border-radius: 50%;
    animation: btn-spin 0.8s linear infinite;
    color: white;
}

.btn-loading.btn-outline::after {
    color: var(--primary);
}

@keyframes btn-spin {
    to { 
        transform: rotate(360deg); 
    }
}

/* Button Success State */
.btn-success {
    animation: btn-success-pulse 0.6s ease-out;
    background: var(--success) !important;
    border-color: var(--success) !important;
}

@keyframes btn-success-pulse {
    0% { 
        transform: scale(1); 
    }
    50% { 
        transform: scale(1.05); 
        box-shadow: 0 0 20px rgba(34, 197, 94, 0.4); 
    }
    100% { 
        transform: scale(1); 
    }
}

/* Button Error State */
.btn-error {
    animation: btn-error-shake 0.5s ease-in-out;
    background: var(--error) !important;
    border-color: var(--error) !important;
}

@keyframes btn-error-shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-4px); }
    20%, 40%, 60%, 80% { transform: translateX(4px); }
}

/* Enhanced Card Hover Effects */
.feature-card, .model-card, .related-card {
    position: relative;
    overflow: hidden;
    transition: all var(--duration-normal) cubic-bezier(0.4, 0, 0.2, 1);
}

/* Shimmer Effect on Hover */
.feature-card::before, .model-card::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 0.5s ease;
    z-index: 1;
}

.feature-card:hover::before, .model-card:hover::before {
    left: 100%;
}

/* Enhanced Hover States */
.feature-card:hover, .model-card:hover, .related-card:hover {
    transform: translateY(-4px);
    box-shadow: 
        0 20px 25px rgba(0, 0, 0, 0.1),
        0 8px 10px rgba(0, 0, 0, 0.04);
}

.model-card.selected:hover {
    box-shadow: 
        0 20px 25px rgba(14, 165, 233, 0.15),
        0 8px 10px rgba(14, 165, 233, 0.08);
}

/* Form Input Focus Animations */
.form-control:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 
        0 0 0 3px rgba(14, 165, 233, 0.1),
        0 4px 6px rgba(0, 0, 0, 0.05);
    transform: translateY(-1px);
}

/* Upload Area Enhanced Animation */
.upload-area.drag-active {
    background: linear-gradient(135deg, var(--primary-50), var(--primary-100));
    border-color: var(--primary);
    border-style: dashed;
    transform: scale(1.02);
    box-shadow: 
        0 0 30px rgba(14, 165, 233, 0.2),
        inset 0 0 20px rgba(14, 165, 233, 0.1);
    animation: upload-pulse 1.5s ease-in-out infinite;
}

@keyframes upload-pulse {
    0%, 100% { 
        box-shadow: 
            0 0 30px rgba(14, 165, 233, 0.2),
            inset 0 0 20px rgba(14, 165, 233, 0.1);
    }
    50% { 
        box-shadow: 
            0 0 40px rgba(14, 165, 233, 0.3),
            inset 0 0 30px rgba(14, 165, 233, 0.15);
    }
}

/* Progress Bar Smooth Animation */
.progress-bar {
    transition: transform var(--duration-slow) cubic-bezier(0.4, 0, 0.2, 1);
    transform-origin: left center;
}

.progress-bar.animate {
    animation: progress-fill 0.8s ease-out;
}

@keyframes progress-fill {
    from { 
        transform: scaleX(0); 
    }
    to { 
        transform: scaleX(1); 
    }
}

/* API Test Button States */
.test-api-btn {
    transition: all var(--duration-fast) var(--ease);
    min-width: 120px; /* Prevent size jumping */
}

.test-api-btn.testing {
    background: var(--warning);
    border-color: var(--warning);
    animation: api-testing 1.5s ease-in-out infinite;
}

@keyframes api-testing {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.test-api-btn.success {
    background: var(--success);
    border-color: var(--success);
    animation: api-success 0.6s ease-out;
}

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

.test-api-btn.error {
    background: var(--error);
    border-color: var(--error);
    animation: api-error 0.5s ease-in-out;
}

@keyframes api-error {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-2px); }
    75% { transform: translateX(2px); }
}

/* Toast Notification Animations */
.toast-enter {
    animation: toast-slide-in 0.3s ease-out;
}

.toast-exit {
    animation: toast-slide-out 0.2s ease-in;
}

@keyframes toast-slide-in {
    from { 
        transform: translateX(100%);
        opacity: 0;
    }
    to { 
        transform: translateX(0);
        opacity: 1;
    }
}

@keyframes toast-slide-out {
    from { 
        transform: translateX(0);
        opacity: 1;
    }
    to { 
        transform: translateX(100%);
        opacity: 0;
    }
}

/* Modal Smooth Animations */
.modal-overlay {
    animation: modal-fade-in 0.3s ease-out;
}

.modal-content {
    animation: modal-slide-up 0.3s ease-out;
}

@keyframes modal-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes modal-slide-up {
    from { 
        transform: translateY(20px);
        opacity: 0;
        scale: 0.95;
    }
    to { 
        transform: translateY(0);
        opacity: 1;
        scale: 1;
    }
}

/* Micro-interactions for Better UX */
.clickable {
    transition: transform var(--duration-fast) var(--ease);
}

.clickable:active {
    transform: scale(0.98);
}

/* Skeleton Loading Animation Enhancement */
.loading-skeleton {
    background: linear-gradient(
        90deg, 
        var(--gray-200) 25%, 
        var(--gray-100) 50%, 
        var(--gray-200) 75%
    );
    background-size: 200% 100%;
    animation: skeleton-shimmer 1.5s infinite;
}

@keyframes skeleton-shimmer {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* Improved Focus Styles for Accessibility */
.btn:focus-visible,
.form-control:focus-visible,
.model-card:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    z-index: 10;
    position: relative;
}

/* Enhanced Step Indicator Animation */
.step-icon {
    transition: all var(--duration-normal) cubic-bezier(0.4, 0, 0.2, 1);
}

.step.active .step-icon {
    animation: step-activate 0.5s ease-out;
}

@keyframes step-activate {
    0% { 
        transform: scale(1);
        background: var(--gray-100);
    }
    50% { 
        transform: scale(1.15);
    }
    100% { 
        transform: scale(1.1);
        background: var(--primary);
    }
}

/* Reduced Motion Support */
@media (prefers-reduced-motion: reduce) {
    .btn-loading::after,
    .upload-area.drag-active,
    .test-api-btn.testing,
    .loading-skeleton,
    .step-icon,
    .feature-card::before,
    .model-card::before {
        animation: none !important;
    }
    
    .feature-card:hover,
    .model-card:hover,
    .related-card:hover,
    .form-control:focus,
    .clickable:active {
        transform: none !important;
    }
}

/* ========================================
   ENHANCED DARK MODE SUPPORT
   ======================================== */

/* Dark Mode Detection and Variables */
@media (prefers-color-scheme: dark) {
    :root {
        /* Updated gray scale for dark mode */
        --gray-50: #1f2937;
        --gray-100: #374151;
        --gray-200: #4b5563;
        --gray-300: #6b7280;
        --gray-400: #9ca3af;
        --gray-500: #d1d5db;
        --gray-600: #e5e7eb;
        --gray-700: #f3f4f6;
        --gray-800: #f9fafb;
        --gray-900: #ffffff;
        
        /* Primary colors remain the same for consistency */
        --primary-50: #1e3a8a;
        --primary-100: #1e40af;
        --primary-200: #2563eb;
        --primary-500: #3b82f6;
        --primary-600: #60a5fa;
        
        /* Adjusted colors for dark mode */
        --success-50: #14532d;
        --success-200: #15803d;
        --success-700: #22c55e;
        
        --warning-50: #92400e;
        --warning-200: #d97706;
        --warning-700: #fbbf24;
        
        --error-50: #991b1b;
        --error-200: #dc2626;
        --error-700: #f87171;
        
        --info-200: #0891b2;
        --secondary-200: #059669;
    }
    
    /* Body and base elements */
    body {
        background: linear-gradient(135deg, var(--gray-50) 0%, #111827 100%);
        color: var(--gray-900);
    }
    
    /* Cards and components */
    .card-enhanced,
    .content-card,
    .feature-card,
    .model-card,
    .related-card,
    .notification-banner {
        background: var(--gray-100);
        border-color: var(--gray-300);
        color: var(--gray-900);
    }
    
    /* Navigation */
    .navbar {
        background: rgba(31, 41, 55, 0.8);
        border-bottom-color: var(--gray-200);
    }
    
    /* Form inputs */
    .form-control,
    input[type="text"],
    input[type="password"],
    textarea,
    select {
        background: var(--gray-100);
        border-color: var(--gray-300);
        color: var(--gray-900);
    }
    
    .form-control:focus {
        border-color: var(--primary-500);
        box-shadow: 
            0 0 0 3px rgba(59, 130, 246, 0.1),
            0 4px 6px rgba(0, 0, 0, 0.05);
    }
    
    /* Upload area */
    .upload-area {
        background: var(--gray-100);
        border-color: var(--gray-300);
        color: var(--gray-800);
    }
    
    .upload-area.drag-active {
        background: linear-gradient(135deg, var(--primary-100), var(--primary-200));
        border-color: var(--primary-500);
    }
    
    /* Progress indicators */
    .step-icon {
        background: var(--gray-200);
        color: var(--gray-600);
    }
    
    .step.active .step-icon {
        background: var(--primary-500);
        color: white;
    }
    
    /* Text adjustments */
    .hero-description {
        color: var(--gray-600);
    }
    
    .semantic-keyword {
        color: var(--primary-500);
    }
    
    /* Enhanced contrast for better readability */
    .card-title,
    .feature-card h3,
    .model-card h3 {
        color: var(--gray-900);
    }
    
    .card-subtitle,
    .feature-card p,
    .model-card p {
        color: var(--gray-700);
    }
}

/* ========================================
   ENHANCED ACCESSIBILITY FEATURES
   ======================================== */

/* High Contrast Mode Support */
@media (prefers-contrast: high) {
    :root {
        /* Increase contrast ratios */
        --primary: #0066cc;
        --primary-dark: #004499;
        --success: #006600;
        --warning: #cc6600;
        --error: #cc0000;
    }
    
    .btn, 
    .form-control, 
    .model-card,
    .feature-card,
    .related-card {
        border: 2px solid currentColor;
    }
    
    .btn:hover,
    .btn:focus {
        outline: 3px solid var(--primary);
        outline-offset: 2px;
    }
    
    /* Ensure text meets contrast requirements */
    body, .card-body, .form-control {
        color: var(--gray-900);
    }
}

/* Screen Reader Only Content */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Focus Management */
.focus-trap {
    position: relative;
}

/* Skip Links for Screen Readers */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--primary);
    color: white;
    padding: 8px 16px;
    text-decoration: none;
    border-radius: 4px;
    z-index: 1000;
    transition: top 0.3s ease;
}

.skip-link:focus {
    top: 6px;
}

/* ARIA Live Regions */
.live-region {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* Enhanced Focus Indicators */
*:focus {
    outline: none;
}

*:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: 2px;
}

/* Button focus improvements */
.btn:focus-visible {
    outline-color: var(--primary-dark);
    outline-width: 3px;
    outline-offset: 2px;
    z-index: 10;
    position: relative;
}

/* Card keyboard navigation */
.model-card[tabindex]:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
    z-index: 10;
}

/* Form validation accessibility */
.form-control[aria-invalid="true"] {
    border-color: var(--error);
    box-shadow: 0 0 0 2px rgba(239, 68, 68, 0.2);
}

.form-error {
    color: var(--error);
    font-size: 0.875rem;
    margin-top: var(--space-1);
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.form-error::before {
    content: "⚠";
    font-weight: bold;
}

/* Loading states accessibility */
.loading-skeleton[aria-label] {
    position: relative;
}

.loading-skeleton::after {
    content: attr(aria-label);
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* Modal accessibility improvements */
.modal-overlay[role="dialog"] {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.modal-content[role="document"] {
    max-height: 90vh;
    overflow-y: auto;
    margin: 20px;
}

/* Progress indicator accessibility */
.progress-indicator[role="progressbar"] {
    position: relative;
}

.progress-text {
    position: absolute;
    left: -10000px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* Color blind friendly improvements */
.status-success::before {
    content: "✓ ";
    font-weight: bold;
}

.status-error::before {
    content: "✗ ";
    font-weight: bold;
}

.status-warning::before {
    content: "⚠ ";
    font-weight: bold;
}

/* Touch target enhancements for mobile accessibility */
@media (max-width: 768px) {
    .btn,
    .form-control,
    .model-card[tabindex],
    .clickable {
        min-height: 48px; /* Enhanced for better touch accessibility */
        min-width: 48px;
    }
    
    /* Improved spacing for touch interfaces */
    .form-grid .form-control {
        margin-bottom: var(--space-4);
    }
}

/* ======================================= */
/* REMOVE ANNOYING SCROLL AND PARALLAX EFFECTS */
/* ======================================= */

/* Override scroll reveal animations - make everything visible immediately */
.scroll-reveal,
.scroll-reveal-left,
.scroll-reveal-right,
.related-card {
  opacity: 1 !important;
  transform: none !important;
  transition: none !important;
}

/* Remove parallax effect */
.parallax-bg {
  transform: none !important;
  will-change: auto !important;
}

/* Override any revealed states */
.scroll-reveal.revealed,
.scroll-reveal-left.revealed,
.scroll-reveal-right.revealed,
.related-card.revealed {
  opacity: 1 !important;
  transform: none !important;
}

/* ======================================= */
/* NUCLEAR OPTION: DISABLE ALL ANIMATIONS */
/* ======================================= */

/* Disable ALL animations and transitions globally */
*,
*::before,
*::after {
  animation-duration: 0s !important;
  animation-delay: 0s !important;
  animation-iteration-count: 1 !important;
  animation-fill-mode: both !important;
  transition-duration: 0s !important;
  transition-delay: 0s !important;
  transform: none !important;
}

/* Specifically target common animation classes */
.hero-emoji,
.feature-card,
.related-card,
.btn,
.card,
.upload-area,
.progress-indicator,
.step,
.step-icon,
.progress-bar,
.progress-fill,
.loading-spinner,
.spinner-ring,
.toast,
.modal,
.feature-grid,
.hero-section,
.hero-title,
.hero-subtitle,
.hero-description {
  animation: none !important;
  transition: none !important;
  transform: none !important;
  opacity: 1 !important;
}

/* Make sure everything is visible immediately */
[style*="opacity: 0"],
[class*="fade"],
[class*="slide"],
[class*="bounce"],
[class*="reveal"] {
  opacity: 1 !important;
  transform: none !important;
  animation: none !important;
  transition: none !important;
}

/* Disable hover effects that might cause transforms */
.hero-emoji:hover,
.feature-card:hover,
.related-card:hover,
.btn:hover,
.card:hover {
  transform: none !important;
  animation: none !important;
  transition: none !important;
}

/* Respect user's reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    transform: none !important;
  }
}

/* Extra safeguards for specific Vue.js classes and inline styles */
[v-cloak],
.v-enter-active,
.v-leave-active,
.v-enter-from,
.v-enter-to,
.v-leave-from,
.v-leave-to {
  animation: none !important;
  transition: none !important;
  transform: none !important;
  opacity: 1 !important;
}

/* Print accessibility */
@media print {
    .btn,
    .modal-overlay,
    .toast,
    .loading-skeleton {
        display: none !important;
    }
    
    .card-enhanced,
    .feature-card,
    .model-card {
        break-inside: avoid;
        border: 1px solid #000;
        box-shadow: none;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
}