/* WorldGen CSS - Enhanced Styling */

/* CSS Variables */
:root {
  /* Colors */
  --primary-color: #4f46e5;
  --primary-dark: #3730a3;
  --primary-light: #818cf8;
  --secondary-color: #10b981;
  --secondary-dark: #047857;
  --secondary-light: #34d399;
  --text-color: #1f2937;
  --text-light: #4b5563;
  --text-lighter: #9ca3af;
  --thumbnail-bg: #e5e7eb;
  --bg-color: #f9fafb;
  --bg-dark: #f3f4f6;
  --bg-darker: #e5e7eb;
  --bg-light: #ffffff;
  
  /* Shadow */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  /* Typography */
  --h1-size: 2.5rem;
  --h2-size: 2rem;
  --h3-size: 1.5rem;
  --p-size: 1rem;
  --small-size: 0.875rem;
  
  /* Spacing */
  --spacing-sm: 0.5rem;
  --spacing: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  
  /* Animations */
  --transition-fast: 150ms ease;
  --transition: 300ms ease;
  --transition-slow: 500ms ease;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  background-color: var(--bg-color);
  color: var(--text-color);
  line-height: 1.5;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Lexend', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, 'Open Sans', 'Helvetica Neue', sans-serif;
  line-height: 1.2;
  margin-bottom: var(--spacing);
  font-weight: 600;
}

h1 {
  font-size: var(--h1-size);
}

h2 {
  font-size: var(--h2-size);
}

h3 {
  font-size: var(--h3-size);
}

p {
  margin-bottom: var(--spacing);
}

a {
  color: var(--primary-color);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--primary-dark);
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing);
}

/* Background Animation */
.bg-animation {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: 
    radial-gradient(circle at 20% 30%, rgba(79, 70, 229, 0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(16, 185, 129, 0.1) 0%, transparent 50%);
  z-index: -1;
  pointer-events: none;
}

/* Hero Section */
.hero-section {
  position: relative;
  padding: var(--spacing-xl) 0;
  overflow: hidden;
  /* margin-bottom: var(--spacing-xl); */
}

.hero-content {
  padding: var(--spacing-lg);
  text-align: center;
  position: relative;
  z-index: 1;
}

.logo-container {
  margin-bottom: var(--spacing-lg);
}

.logo-container img {
  width: 300px;
  height: 300px;
  object-fit: contain;
  transition: transform var(--transition);
}

/* .logo-container img:hover {
  transform: scale(1.05);
} */

.author-info {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  gap: var(--spacing);
}

.author-name {
  font-weight: 600;
  color: var(--primary-color);
  transition: color var(--transition-fast);
  position: relative;
}

.author-name:hover {
  color: var(--primary-dark);
}

.author-name:after {
  content: "";
  position: absolute;
  width: 0;
  height: 2px;
  bottom: -3px;
  left: 0;
  background-color: var(--primary-dark);
  transition: width var(--transition-fast);
}

.author-name:hover:after {
  width: 100%;
}

.institute {
  color: var(--text-lighter);
  font-size: var(--small-size);
  padding-left: var(--spacing);
  position: relative;
}

.institute:before {
  content: "•";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-lighter);
}

/* Buttons */
.action-buttons {
  display: flex;
  justify-content: center;
  gap: var(--spacing);
  flex-wrap: wrap;
  margin-top: var(--spacing-lg);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 0.5rem;
  font-weight: 500;
  font-size: 1rem;
  transition: all var(--transition-fast);
  cursor: pointer;
  border: none;
}

.btn svg {
  width: 1.25rem;
  height: 1.25rem;
}

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

.btn-primary:hover {
  background-color: var(--primary-dark);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
  color: white;
}

.btn-secondary {
  background-color: white;
  color: var(--text-color);
  border: 1px solid var(--bg-darker);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background-color: var(--bg-dark);
  box-shadow: var(--shadow);
  transform: translateY(-2px);
  color: var(--text-color);
}

.disabled-link {
  opacity: 0.7;
  cursor: not-allowed;
  pointer-events: none;
}

/* Sections */
section {
  padding: var(--spacing-xl) 0;
  margin-bottom: var(--spacing-xl);
  position: relative;
  clear: both;
  overflow: hidden;
}

.section-title {
  text-align: center;
  margin-bottom: var(--spacing);
  color: var(--text-color);
  font-weight: 700;
  font-size: var(--h2-size);
}

.section-subtitle {
  text-align: center;
  color: var(--text-light);
  max-width: 700px;
  margin: 0 auto var(--spacing-xl);
  font-size: var(--p-size);
}

/* Features */
.features {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-lg);
  justify-content: center;
  margin-left: auto;
  margin-right: auto;
  max-width: 1000px;
}

.feature-card {
  background-color: white;
  border-radius: 1rem;
  padding: var(--spacing-lg);
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.feature-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.feature-icon-container {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  /* background-color: var(--primary-light); Removed duplicate */
  background-color: rgba(79, 70, 229, 0.1); /* Kept the more specific rgba */
  border-radius: 0.75rem;
  margin-bottom: var(--spacing);
}

.feature-icon {
  color: var(--primary-color);
  width: 1.5rem;
  height: 1.5rem;
}

.feature-title {
  margin-bottom: var(--spacing);
  font-size: 1rem;
  font-weight: 600;
}

.feature-description {
  color: var(--text-light);
  font-size: var(--small-size);
}

/* Demo Section */
.tab-buttons {
  display: flex;
  justify-content: center;
  gap: 0;
  margin-bottom: var(--spacing-lg);
  position: relative;
  z-index: 10;
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
  background-color: var(--bg-light);
  padding: 0.5rem;
  border-radius: 2rem;
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.tab-slider {
  position: absolute;
  height: calc(100% - 1rem);
  width: 48%;
  left: 0.5rem;
  top: 0.5rem;
  background-color: var(--primary-color);
  border-radius: 1.5rem;
  transition: transform 0.3s cubic-bezier(0.645, 0.045, 0.355, 1);
  z-index: 0;
  box-shadow: var(--shadow-sm);
}

/* Adjustments for slider position */
.tab-button:first-of-type.active ~ .tab-slider {
  transform: translateX(0);
}

.tab-button:nth-of-type(2).active ~ .tab-slider {
  transform: translateX(101%);
}

.tab-button {
  padding: 0.75rem 1.5rem;
  border-radius: 1.5rem;
  font-weight: 500;
  font-size: 1rem;
  cursor: pointer;
  border: none;
  background-color: transparent;
  color: var(--text-light);
  transition: all var(--transition-fast);
  position: relative;
  flex: 1;
  text-align: center;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  z-index: 2;
  min-width: 0; /* Ensure flex items can shrink below min-content width */
}

.tab-icon {
  width: 1.25rem;
  height: 1.25rem;
  transition: all var(--transition-fast);
}

/* Tab button states - using !important to ensure priority */
.tab-button:hover {
  color: var(--primary-color);
}

.tab-button.active {
  color: white !important;
}

.tab-button.active .tab-icon {
  color: white !important;
}

.tab-button:not(.active) {
  color: var(--text-light);
}

.tab-button:not(.active) .tab-icon {
  color: var(--text-light);
}

/* Responsive Tabs */
@media (max-width: 768px) {
  .tab-buttons {
    max-width: 300px;
  }
  
  .tab-button {
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
  }
  
  .tab-icon {
    width: 1rem;
    height: 1rem;
  }
}

@media (max-width: 480px) {
  .tab-buttons {
    max-width: 280px;
    padding: 0.25rem;
  }
  
  .tab-slider {
    height: calc(100% - 0.5rem);
    top: 0.25rem;
    left: 0.25rem;
    width: 49%;
  }
  
  .tab-button {
    padding: 0.5rem 0.5rem;
    font-size: 0.75rem;
    gap: 0.25rem;
  }
}

.demo-content {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
  margin-bottom: var(--spacing-xl);
  padding-top: var(--spacing);
  clear: both;
}

.demo-content-tab {
  display: none;
  opacity: 0;
  transition: opacity var(--transition);
  background-color: transparent;
}

.demo-content-tab.active {
  display: block;
}

.demo-content-tab.fade-in {
  opacity: 1;
}

.demo-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-lg);
  margin: 0 auto;
  will-change: transform;
  transition: transform 0.3s ease;
  touch-action: pan-y pinch-zoom;
}

.demo-item {
  background-color: white;
  border-radius: 1rem;
  padding: var(--spacing);
  box-shadow: var(--shadow);
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
  opacity: 0;
  position: relative;
  overflow: hidden;
}

.demo-item.fade-in {
  opacity: 1;
  animation: fadeInAnimation 0.5s ease forwards;
}

.demo-item:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.demo-item video {
  width: 100%;
  border-radius: 0.5rem;
  margin-bottom: var(--spacing);
  aspect-ratio: 16 / 9;
  background-color: var(--bg-dark);
  object-fit: cover;
  cursor: pointer;
  display: block;
  pointer-events: none !important;
}

.demo-item img {
  pointer-events: none !important;
}

.demo-item p {
  font-size: var(--small-size);
  color: var(--text-color);
  margin-bottom: 0;
  font-weight: 500;
  padding: var(--spacing-sm);
}

/* Add keyframes for fade-in animation */
@keyframes fadeInAnimation {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Mobile adjustments for demo section */
@media (max-width: 768px) {
  .demo-grid {
    grid-template-columns: 1fr;
    max-width: 500px;
    margin: 0 auto;
  }
  
  /* Remove the column layout for tabs that was causing issues */
  .tab-buttons {
    flex-direction: row;
  }
}

/* Remove old demo styles */
.demo-container,
.demo-video {
  /* These are no longer used */
  display: none;
}

/* Footer */
footer {
  background-color: var(--bg-light);
  padding: var(--spacing-lg) 0;
  box-shadow: 0 -1px 0 var(--bg-darker);
  margin-top: var(--spacing-xl);
  position: relative;
  z-index: 1;
  clear: both;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: var(--spacing-lg);
  flex-wrap: wrap;
  margin-bottom: var(--spacing);
}

.footer-link {
  color: var(--text-light);
  font-size: var(--small-size);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--primary-color);
}

.copyright {
  text-align: center;
  color: var(--text-lighter);
  font-size: 0.75rem;
}

/* Responsive Adjustments */
@media (max-width: 768px) {
  :root {
    --h1-size: 2rem;
    --h2-size: 1.75rem;
    --h3-size: 1.25rem;
  }
  
  .hero-section {
    padding: var(--spacing-lg) 0;
  }
  
  .logo-container img {
    width: 300px;
    height: 300px;
  }
  
  .features {
    grid-template-columns: 1fr;
  }
  
  .action-buttons {
    flex-direction: column;
    align-items: stretch;
    width: 100%;
    max-width: 300px;
    margin-left: auto;
    margin-right: auto;
  }
}

@media (max-width: 480px) {
  .author-info {
    flex-direction: column;
    gap: 0.25rem;
  }
  
  .institute:before {
    display: none;
  }
  
  .institute {
    padding-left: 0;
  }
}

/* -- Interactive Demo CSS -- */
.iframe-container {
  position: relative;
  width: 100%;
  /* Aspect ratio 16:9 */
  padding-top: 56.25%; 
  margin-bottom: 1rem; /* Space below iframe */
  background-color: var(--bg-dark); /* Placeholder background */
  border-radius: 0.75rem; /* Rounded corners */
  overflow: hidden; /* Keep iframe corners rounded */
  box-shadow: var(--shadow-md);
}

.iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: none;
}

.tldr {
  font-size: 1.5rem;
  color: var(--text-color);
  font-weight: bold;
  text-align: center;
  margin: 0; /* Reset margin */
}

.inline-image {
  display: inline-block;
  vertical-align: middle;
  height: 1.5em; 
  margin: 0 0.25em;
}

/* Thumbnail Slider */
.results-slide-row {
  display: flex;
  justify-content: center;
  gap: 1.5rem;
  padding: 1rem 0;
}

.results-slide-row div[data-img-src] {
  flex: 0 0 180px;
  height: 120px;
  background-size: cover;
  background-position: center;
  background-clip: padding-box;
  border-radius: 0.75rem;
  cursor: pointer;
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  border: 2px solid rgba(229, 231, 235, 0.5);
  position: relative;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.08);
  overflow: hidden;
  transform: translateY(0);
  will-change: transform, box-shadow;
}

.results-slide-row div[data-img-src]::after {
  content: attr(data-label);
  position: absolute;
  bottom: 0;
  left: 0;
  width: 100%;
  background-color: rgba(31, 41, 55, 0.7);
  color: white;
  font-size: 0.875rem;
  text-align: center;
  padding: 0.5rem 0;
  font-weight: 500;
  transition: all 0.3s ease;
}

.results-slide-row div[data-img-src]:hover {
  transform: translateY(-4px);
  box-shadow: 0 6px 12px rgba(0, 0, 0, 0.1);
}

.results-slide-row div[data-img-src].active-thumb {
  border-color: var(--primary-color);
  box-shadow: 0 6px 16px rgba(79, 70, 229, 0.2);
  transform: translateY(-4px);
}

.results-slide-row div[data-img-src].active-thumb::after {
  background-color: var(--primary-color);
}

/* -- End Interactive Demo CSS -- */

@layer utilities {
    .bg-grid-pattern {
        background-image: linear-gradient(to right, rgba(100, 116, 139, 0.1) 1px, transparent 1px),
                        linear-gradient(to bottom, rgba(100, 116, 139, 0.1) 1px, transparent 1px);
        background-size: 20px 20px; /* Adjust grid size */
    }
    .bg-animation {
        position: fixed;
    }
    .mask-fade-edges {
        -webkit-mask-image: radial-gradient(ellipse at center, black 65%, transparent 100%);
        mask-image: radial-gradient(ellipse at center, black 65%, transparent 100%);
    }
}

/* Add Gallery Arrow styles for responsive display */
.gallery-arrow {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.gallery-arrow svg {
  width: 20px;
  height: 20px;
}

.gallery-arrow:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

.gallery-arrow.hidden-arrow {
  opacity: 0;
  visibility: hidden;
}

/* Mobile optimizations for gallery */
@media (max-width: 768px) {
  /* Adjust the demo grid for mobile */
  .demo-grid {
    gap: 12px; /* Smaller gap on mobile */
  }
  
  /* Make gallery arrows more visible on mobile */
  .gallery-arrow {
    width: 35px;
    height: 35px;
    background-color: rgba(255, 255, 255, 0.85);
  }
  
  /* Position arrows inside the container on mobile */
  .gallery-container {
    position: relative;
    padding-left: 15px !important;
    padding-right: 15px !important;
  }
  
  .gallery-arrow.prev {
    left: 5px !important;
    transform: translateY(-50%) !important; 
  }
  
  .gallery-arrow.next {
    right: 5px !important;
    transform: translateY(-50%) !important;
  }
}

@media (max-width: 480px) {
  .gallery-arrow {
    width: 30px;
    height: 30px;
  }
  
  .gallery-arrow svg {
    width: 16px;
    height: 16px;
  }
  
  /* Even tighter positioning for very small screens */
  .gallery-container {
    padding-left: 10px !important;
    padding-right: 10px !important;
  }
  
  .gallery-arrow.prev {
    left: 0px !important;
  }
  
  .gallery-arrow.next {
    right: 0px !important;
  }
}

/* Gallery Drag Interaction Styles */
.demo-grid {
  will-change: transform;
  transition: transform 0.3s ease;
  touch-action: pan-y pinch-zoom;
}

.demo-grid.is-dragging {
  transition: none;
  cursor: grabbing;
}

/* Make demo items non-interactive during dragging to prevent accidental taps */
.is-dragging .demo-item {
  pointer-events: none;
}

/* Add a subtle visual indicator when dragging is happening */
@media (max-width: 768px) {
  .demo-grid.is-dragging::after {
    content: "";
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.05);
    pointer-events: none;
    z-index: 10;
  }
  
  /* Make the gallery container properly handle overflow during dragging */
  .gallery-scroller {
    overflow-x: hidden;
    overflow-y: hidden;
    -webkit-overflow-scrolling: touch;
    position: relative;
  }
  
  /* Add cursor hint for touch devices */
  .demo-grid::before {
    content: "";
    position: absolute;
    top: 50%;
    left: 50%;
    width: 44px;
    height: 44px;
    margin-left: -22px;
    margin-top: -22px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='15 18 9 12 15 6'%3E%3C/polyline%3E%3C/svg%3E"), url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23ffffff' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='9 18 15 12 9 6'%3E%3C/polyline%3E%3C/svg%3E");
    background-position: left center, right center;
    background-repeat: no-repeat, no-repeat;
    background-size: 20px 20px, 20px 20px;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
    z-index: 20;
    border-radius: 22px;
    background-color: rgba(79, 70, 229, 0.7);
  }
  
  /* Show the swipe hint when starting to drag */
  .demo-grid.is-dragging::before {
    opacity: 0.7;
    animation: pulse 1s ease infinite;
  }
  
  @keyframes pulse {
    0% { transform: scale(1); opacity: 0.7; }
    50% { transform: scale(1.05); opacity: 0.9; }
    100% { transform: scale(1); opacity: 0.7; }
  }
}

/* Ensure videos don't block touch events */
.demo-item video, 
.demo-item img {
  pointer-events: none !important;
}

/* Make parent container draggable */
.gallery-scroller {
  cursor: grab;
  touch-action: pan-y;
  -webkit-overflow-scrolling: touch;
  position: relative;
}

.gallery-scroller:active {
  cursor: grabbing;
}

/* Improve mobile dragging */
@media (max-width: 768px) {
  .demo-grid {
    z-index: 1;
    position: relative;
  }
  
  .gallery-scroller {
    overflow-x: hidden;
    /* Add a subtle indicator for swipe area */
    background: linear-gradient(90deg, 
      rgba(79, 70, 229, 0.05) 0%, 
      transparent 5%, 
      transparent 95%, 
      rgba(79, 70, 229, 0.05) 100%
    );
    border-radius: 8px;
  }
  
  /* Make dragging more obvious */
  .demo-grid.is-dragging {
    cursor: grabbing !important;
  }
}

/* Hide Interactive Demo on mobile */
@media (max-width: 768px) {
  #interactive-demo {
    display: none;
  }
}