html, body { background: #000; }
body { font-family: 'Vazirmatn', 'Barlow', sans-serif; -webkit-font-smoothing: antialiased; }

.liquid-glass {
  background: rgba(255,255,255,0.01);
  background-blend-mode: luminosity;
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  border: none;
  box-shadow: inset 0 1px 1px rgba(255,255,255,0.1);
  position: relative;
  overflow: hidden;
}
.liquid-glass::before {
  content: "";
  position: absolute; inset: 0;
  border-radius: inherit;
  padding: 1.4px;
  background: linear-gradient(180deg,
    rgba(255,255,255,0.45) 0%,
    rgba(255,255,255,0.15) 20%,
    rgba(255,255,255,0) 40%,
    rgba(255,255,255,0) 60%,
    rgba(255,255,255,0.15) 80%,
    rgba(255,255,255,0.45) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  pointer-events: none;
}

.liquid-glass-strong {
  background: rgba(255,255,255,0.01);
  background-blend-mode: luminosity;
  backdrop-filter: blur(50px);
  -webkit-backdrop-filter: blur(50px);
  border: none;
  box-shadow: 4px 4px 4px rgba(0,0,0,0.05), inset 0 1px 1px rgba(255,255,255,0.15);
  position: relative;
  overflow: hidden;
}
.liquid-glass-strong::before {
  content: "";
  position: absolute; inset: 0;
  border-radius: inherit;
  padding: 1.4px;
  background: linear-gradient(180deg,
    rgba(255,255,255,0.5) 0%,
    rgba(255,255,255,0.2) 20%,
    rgba(255,255,255,0) 40%,
    rgba(255,255,255,0) 60%,
    rgba(255,255,255,0.2) 80%,
    rgba(255,255,255,0.5) 100%);
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  pointer-events: none;
}

/* ویدیوها هیچ transition سی‌اس‌اسی ندارند؛ فید فقط با rAF انجام می‌شود */
video { transition: none !important; }
::selection { background: #fff; color: #000; }