assets/globals.css

@import "tailwindcss";
@import "tw-animate-css";

@custom-variant dark (&:is(.dark *));

@theme inline {
  --color-background: var(--background);
  --color-foreground: var(--foreground);
  --font-sans: var(--font-inter-sans);
  --font-mono: var(--font-ptSans-mono);
  --color-sidebar-ring: var(--sidebar-ring);
  --color-sidebar-border: var(--sidebar-border);
  --color-sidebar-accent-foreground: var(--sidebar-accent-foreground);
  --color-sidebar-accent: var(--sidebar-accent);
  --color-sidebar-primary-foreground: var(--sidebar-primary-foreground);
  --color-sidebar-primary: var(--sidebar-primary);
  --color-sidebar-foreground: var(--sidebar-foreground);
  --color-sidebar: var(--sidebar);
  --color-chart-5: var(--chart-5);
  --color-chart-4: var(--chart-4);
  --color-chart-3: var(--chart-3);
  --color-chart-2: var(--chart-2);
  --color-chart-1: var(--chart-1);
  --color-ring: var(--ring);
  --color-input: var(--input);
  --color-border: var(--border);
  --color-destructive: var(--destructive);
  --color-accent-foreground: var(--accent-foreground);
  --color-accent: var(--accent);
  --color-muted-foreground: var(--muted-foreground);
  --color-muted: var(--muted);
  --color-secondary-foreground: var(--secondary-foreground);
  --color-secondary: var(--secondary);
  --color-primary-foreground: var(--primary-foreground);
  --color-primary: var(--primary);
  --color-popover-foreground: var(--popover-foreground);
  --color-popover: var(--popover);
  --color-card-foreground: var(--card-foreground);
  --color-card: var(--card);
  --radius-sm: calc(var(--radius) - 4px);
  --radius-md: calc(var(--radius) - 2px);
  --radius-lg: var(--radius);
  --radius-xl: calc(var(--radius) + 4px);
}

:root {
  --radius: 0.625rem;
  --background: oklch(1 0 0);
  --foreground: oklch(0.145 0 0);
  --card: oklch(1 0 0);
  --card-foreground: oklch(0.145 0 0);
  --popover: oklch(1 0 0);
  --popover-foreground: oklch(0.145 0 0);
  --primary: oklch(0.205 0 0);
  --primary-foreground: oklch(0.985 0 0);
  --secondary: oklch(0.97 0 0);
  --secondary-foreground: oklch(0.205 0 0);
  --muted: oklch(0.97 0 0);
  --muted-foreground: oklch(0.556 0 0);
  --accent: oklch(0.97 0 0);
  --accent-foreground: oklch(0.205 0 0);
  --destructive: oklch(0.577 0.245 27.325);
  --border: oklch(0.922 0 0);
  --input: oklch(0.922 0 0);
  --ring: oklch(0.708 0 0);
  --chart-1: oklch(0.646 0.222 41.116);
  --chart-2: oklch(0.6 0.118 184.704);
  --chart-3: oklch(0.398 0.07 227.392);
  --chart-4: oklch(0.828 0.189 84.429);
  --chart-5: oklch(0.769 0.188 70.08);
  --sidebar: oklch(0.985 0 0);
  --sidebar-foreground: oklch(0.145 0 0);
  --sidebar-primary: oklch(0.205 0 0);
  --sidebar-primary-foreground: oklch(0.985 0 0);
  --sidebar-accent: oklch(0.97 0 0);
  --sidebar-accent-foreground: oklch(0.205 0 0);
  --sidebar-border: oklch(0.922 0 0);
  --sidebar-ring: oklch(0.708 0 0);
}

.dark {
  --background: oklch(0.145 0 0);
  --foreground: oklch(0.985 0 0);
  --card: oklch(0.205 0 0);
  --card-foreground: oklch(0.985 0 0);
  --popover: oklch(0.205 0 0);
  --popover-foreground: oklch(0.985 0 0);
  --primary: oklch(0.922 0 0);
  --primary-foreground: oklch(0.205 0 0);
  --secondary: oklch(0.269 0 0);
  --secondary-foreground: oklch(0.985 0 0);
  --muted: oklch(0.269 0 0);
  --muted-foreground: oklch(0.708 0 0);
  --accent: oklch(0.269 0 0);
  --accent-foreground: oklch(0.985 0 0);
  --destructive: oklch(0.704 0.191 22.216);
  --border: oklch(1 0 0 / 10%);
  --input: oklch(1 0 0 / 15%);
  --ring: oklch(0.556 0 0);
  --chart-1: oklch(0.488 0.243 264.376);
  --chart-2: oklch(0.696 0.17 162.48);
  --chart-3: oklch(0.769 0.188 70.08);
  --chart-4: oklch(0.627 0.265 303.9);
  --chart-5: oklch(0.645 0.246 16.439);
  --sidebar: oklch(0.205 0 0);
  --sidebar-foreground: oklch(0.985 0 0);
  --sidebar-primary: oklch(0.488 0.243 264.376);
  --sidebar-primary-foreground: oklch(0.985 0 0);
  --sidebar-accent: oklch(0.269 0 0);
  --sidebar-accent-foreground: oklch(0.985 0 0);
  --sidebar-border: oklch(1 0 0 / 10%);
  --sidebar-ring: oklch(0.556 0 0);
}

@layer base {
  * {
    @apply border-border outline-ring/50;
  }
  body {
    @apply bg-background text-foreground;
  }
  html {
    @apply scroll-smooth;
  }
}

.background__noisy {
  @apply bg-blend-normal pointer-events-none opacity-90;
  background-size: 25ww auto;
  background-image: url("/background_noisy.webp");
  @apply fixed w-screen h-screen -z-1 top-0 left-0;
}

.monaco-editor .margin {
  @apply !bg-neutral-900;
}
.monaco-editor .monaco-editor-background {
  @apply !bg-neutral-900;
}

/* 🚀 BULLETPROOF ZERO-FLASH PREVIEW SYSTEM */

/* Main preview iframe with anti-flash protection */
#preview-iframe {
  /* Bulletproof anti-flash transitions */
  transition: opacity 200ms cubic-bezier(0.25, 0.46, 0.45, 0.94);
  
  /* Prevent any flash with guaranteed white background */
  background-color: #ffffff !important;
  background-image: none !important;
  
  /* Hardware acceleration for ultra-smooth performance */
  will-change: opacity;
  transform: translateZ(0);
  backface-visibility: hidden;
  
  /* Ensure immediate visibility */
  opacity: 1;
  
  /* Smooth scrolling for content updates */
  scroll-behavior: smooth;
  
  /* Prevent layout shifts */
  min-height: 100%;
  
  /* Z-index management */
  z-index: 10;
}

/* Loading state - fade in smoothly */
#preview-iframe.loading {
  opacity: 0.7;
  transition: opacity 150ms ease-out;
}

/* Enhanced container for smooth updates */
.smooth-preview-container {
  /* Prevent layout jumps and overflow flashes */
  overflow: hidden;
  position: relative;
  
  /* Ensure smooth transitions */
  will-change: contents;
  
  /* Hardware acceleration */
  transform: translateZ(0);
}

/* Support for smooth element transitions within iframes */
.smooth-element-transition {
  transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  will-change: opacity, transform;
}

.smooth-content-update {
  animation: smoothContentPulse 0.4s ease-in-out;
}

@keyframes smoothContentPulse {
  0%, 100% { 
    transform: scale(1);
    opacity: 1;
  }
  50% { 
    transform: scale(1.01);
    opacity: 0.95;
  }
}

/* Ultra-smooth fade-in animation for new content with anti-flash */
@keyframes ultraSmoothFadeIn {
  0% {
    opacity: 0;
    transform: translateY(2px) scale(0.999) translateZ(0);
    filter: blur(0.5px);
  }
  20% {
    opacity: 0.7;
    transform: translateY(1px) scale(0.9995) translateZ(0);
    filter: blur(0.3px);
  }
  100% {
    opacity: 1;
    transform: translateY(0) scale(1) translateZ(0);
    filter: blur(0px);
  }
}

.preview-fade-in {
  animation: ultraSmoothFadeIn 800ms cubic-bezier(0.23, 1, 0.32, 1) forwards;
  /* Ensure content is visible during animation */
  opacity: 1;
}

/* Subtle pulse animation for AI working state - ultra smooth */
@keyframes ultraSmoothPulse {
  0%, 100% {
    opacity: 1;
    transform: translateZ(0);
  }
  50% {
    opacity: 0.85;
    transform: scale(0.999) translateZ(0);
  }
}

.smooth-pulse {
  animation: ultraSmoothPulse 3s cubic-bezier(0.4, 0, 0.6, 1) infinite;
  will-change: opacity, transform;
}

/* Enhanced reduced motion support */
@media (prefers-reduced-motion: reduce) {
  #preview-iframe {
    transition: opacity 100ms ease;
    transform: none !important;
    filter: none !important;
    will-change: auto;
  }
  
  .preview-fade-in {
    animation: none;
    opacity: 1 !important;
    transform: none !important;
    filter: none !important;
  }
  
  .smooth-pulse {
    animation: none;
    opacity: 0.9;
    transform: none !important;
  }
}
.monaco-editor .line-numbers {
  @apply !text-neutral-500;
}

.matched-line {
  @apply bg-sky-500/30;
}

/* 🎨 ENHANCED IFRAME CONTENT TRANSITIONS */

/* Global styles that will be injected into iframe content */
.iframe-smooth-transitions * {
  /* Smooth transitions for all content changes */
  transition: opacity 200ms cubic-bezier(0.4, 0, 0.2, 1),
              color 200ms cubic-bezier(0.4, 0, 0.2, 1),
              background-color 200ms cubic-bezier(0.4, 0, 0.2, 1),
              border-color 200ms cubic-bezier(0.4, 0, 0.2, 1),
              transform 200ms cubic-bezier(0.4, 0, 0.2, 1) !important;
  
  /* Hardware acceleration */
  will-change: opacity, transform, background-color;
  transform: translateZ(0);
}

/* Smooth element entrance animation */
.element-entering {
  opacity: 0 !important;
  transform: translateY(5px) scale(0.99) translateZ(0) !important;
  transition: opacity 300ms cubic-bezier(0.34, 1.56, 0.64, 1),
              transform 300ms cubic-bezier(0.34, 1.56, 0.64, 1) !important;
}

.element-entering.entered {
  opacity: 1 !important;
  transform: translateY(0) scale(1) translateZ(0) !important;
}

/* Smooth element exit animation */
.element-leaving {
  opacity: 1 !important;
  transform: translateY(0) scale(1) translateZ(0) !important;
  transition: opacity 250ms cubic-bezier(0.4, 0, 1, 1),
              transform 250ms cubic-bezier(0.4, 0, 1, 1) !important;
}

.element-leaving.left {
  opacity: 0 !important;
  transform: translateY(-5px) scale(0.98) translateZ(0) !important;
}

/* Content change highlight effect */
.content-changed {
  animation: contentHighlight 400ms cubic-bezier(0.4, 0, 0.2, 1) !important;
  transform: translateZ(0);
}

@keyframes contentHighlight {
  0%, 100% { 
    background-color: transparent !important;
    box-shadow: none !important;
  }
  30%, 70% { 
    background-color: rgba(59, 130, 246, 0.08) !important;
    box-shadow: 0 0 0 1px rgba(59, 130, 246, 0.1) !important;
  }
}

/* Smooth morphing indicator */
.morphing-element {
  position: relative;
}

.morphing-element::before {
  content: '';
  position: absolute;
  top: -1px;
  left: -1px;
  right: -1px;
  bottom: -1px;
  background: linear-gradient(90deg, 
    transparent, 
    rgba(59, 130, 246, 0.1), 
    transparent
  );
  border-radius: 3px;
  opacity: 0;
  animation: morphingGlow 600ms ease-out;
  pointer-events: none;
  z-index: 1000;
}

@keyframes morphingGlow {
  0% { opacity: 0; transform: translateX(-100%); }
  50% { opacity: 1; transform: translateX(0); }
  100% { opacity: 0; transform: translateX(100%); }
}

/* Ultra-smooth text content updates */
.text-morphing {
  transition: all 200ms cubic-bezier(0.4, 0, 0.2, 1) !important;
}

.text-morphing.changing {
  opacity: 0.7;
  transform: translateY(1px) translateZ(0);
}

/* ========================================
   SMOOTH PREVIEW TRANSITIONS
   ======================================== */

/* Basic iframe transition for content changes */
iframe {
  transition: opacity 0.3s ease-in-out, transform 0.2s ease-out;
  will-change: opacity;
}

/* Smooth loading state */
.preview-updating {
  opacity: 0.8;
  transition: opacity 0.2s ease-in-out;
}

/* Prevent flash during iframe content updates */
#preview-iframe-1,
#preview-iframe-2 {
  background: white;
  transition: opacity 0.2s ease-in-out;
}

/* Loading indicator for preview updates */
.preview-loading-indicator {
  transition: opacity 0.2s ease-in-out;
}

/* Hardware acceleration for smooth transitions */
.preview-container {
  transform: translateZ(0);
  will-change: transform;
}

/* Prevent content jump during updates */
.preview-iframe-wrapper {
  position: relative;
  overflow: hidden;
}