src/app/globals.css

@import "tailwindcss";

:root {
  --background: #ffffff;
  --foreground: #171717;
}

@theme inline {
  --color-background: var(--background);
  --color-foreground: var(--foreground);
  --font-sans: var(--font-geist-sans);
  --font-mono: var(--font-geist-mono);
}

@media (prefers-color-scheme: dark) {
  :root {
    --background: #0a0a0a;
    --foreground: #ededed;
  }
}

body {
  background: var(--background);
  color: var(--foreground);
  font-family: Arial, Helvetica, sans-serif;
}

.video-background {
  @apply fixed top-0 right-0 bottom-0 left-0 -z-10 overflow-hidden w-screen h-screen;
}
.video-background iframe {
  @apply absolute top-1/2 left-1/2 border-0 pointer-events-none bg-black;
  width: 100vw;
  height: 100vh;
  transform: translate(-50%, -50%);
}
@media (min-aspect-ratio: 16/9) {
  .video-background iframe {
    height: 56.25vw;
  }
}
@media (max-aspect-ratio: 16/9) {
  .video-background iframe {
    width: 177.78vh;
  }
}