/* GlassTube — cinema dark: red glow, wide hero, glassy cards. */
[data-app="glasstube"] .app-bg {
  background:
    radial-gradient(1000px 420px at 50% -10%, rgb(255 59 48 / 0.2), transparent 60%),
    #160a0d;
}
[data-app="glasstube"] .app-hero h1 { letter-spacing: -0.03em; font-weight: 800; }
[data-app="glasstube"] .hero-icon img { box-shadow: 0 0 50px rgb(255 59 48 / 0.45); }
[data-app="glasstube"] .btn-primary { background: linear-gradient(180deg, #ff5147, #d21f14); box-shadow: 0 6px 24px rgb(255 59 48 / 0.4); }