.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;
}

/* --- Smooth in-page scrolling (respects reduced-motion); keep anchored sections clear of the fixed nav --- */
@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}
[id] { scroll-margin-top: 6rem; }

/* --- Cursor spotlight: a soft white light tracks the pointer inside glass surfaces. ---
   --gx/--gy are set per-card by the delegated pointer handler in Common.js (default off-card).
   `screen` blend means it only adds light, so text underneath stays crisp. */
.liquid-glass::after,
.liquid-glass-strong::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(170px circle at var(--gx, -250px) var(--gy, -250px),
    rgba(255, 255, 255, 0.25), rgba(255, 255, 255, 0) 60%);
  opacity: 0;
  transition: opacity 0.4s ease;
  pointer-events: none;
  mix-blend-mode: screen;
}
.liquid-glass:hover::after,
.liquid-glass-strong:hover::after { opacity: 1; }