:root {
  --background: 220 22% 3%;
  --foreground: 205 28% 94%;
  --primary: 194 100% 55%;
  --secondary: 220 20% 8%;
  --muted: 210 10% 57%;
  --destructive: 354 92% 62%;
  --border: 210 18% 16%;
  --card: 220 20% 10%;
  --shadow-sm: 0 8px 22px hsl(220 50% 2% / 0.35);
  --shadow-md: 0 18px 46px hsl(220 50% 2% / 0.48);
  --shadow-lg: 0 30px 90px hsl(220 50% 2% / 0.68);
  --transition-fast: 150ms cubic-bezier(.2,.8,.2,1);
  --transition-smooth: 280ms cubic-bezier(.2,.8,.2,1);
  --radius-sm: 12px;
  --radius-md: 18px;
  --radius-lg: 26px;
}

.dark {
  --background: 220 22% 3%;
  --foreground: 205 28% 94%;
  --primary: 194 100% 55%;
  --secondary: 220 20% 8%;
  --muted: 210 10% 57%;
  --destructive: 354 92% 62%;
  --border: 210 18% 16%;
  --card: 220 20% 10%;
}

* {
  box-sizing: border-box;
  -webkit-tap-highlight-color: transparent;
}

html {
  background: hsl(var(--background));
}

body {
  margin: 0;
  min-height: 100vh;
  background: hsl(var(--background));
  color: hsl(var(--foreground));
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

button, textarea {
  font: inherit;
}

button:focus-visible, textarea:focus-visible {
  outline: 2px solid hsl(var(--primary));
  outline-offset: 3px;
}

.editor-grid {
  background-image:
    linear-gradient(hsl(var(--primary) / 0.10) 1px, transparent 1px),
    linear-gradient(90deg, hsl(var(--primary) / 0.10) 1px, transparent 1px);
  background-size: 34px 34px;
  mask-image: radial-gradient(circle at 50% 42%, black 0%, transparent 72%);
}

.grid-noise {
  background-image:
    linear-gradient(hsl(var(--foreground) / 0.35) 1px, transparent 1px),
    linear-gradient(90deg, hsl(var(--foreground) / 0.35) 1px, transparent 1px);
  background-size: 42px 42px;
}

.scrollbar-none {
  scrollbar-width: none;
}

.scrollbar-none::-webkit-scrollbar {
  display: none;
}

.posting-bar {
  width: 42%;
  animation: posting 900ms ease-in-out infinite alternate;
  box-shadow: 0 0 18px hsl(var(--primary) / 0.75);
}

@keyframes posting {
  from { transform: translateX(-12%); width: 28%; }
  to { transform: translateX(220%); width: 42%; }
}

@media (min-width: 640px) {
  body {
    background:
      radial-gradient(circle at 50% 0%, hsl(var(--primary) / 0.12), transparent 32%),
      hsl(var(--background));
  }
}