/* ============================================================
   Edison bulbs over the headings
   ============================================================ */
.edison {
  position: absolute;
  left: 4%;
  right: 4%;
  height: var(--sag);
  pointer-events: none;
  z-index: 3;
}
.ed-wire svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  overflow: visible;
}
.ed-wire path {
  fill: none;
  stroke: #2b2622;
  stroke-width: 2;
}
.ed-bulb {
  position: absolute;
  left: var(--x);
  top: var(--y);
  width: 18px;
  margin-left: -9px;
  transform-origin: 50% 0;
  /* --swing comes from the tilt, as a pendulum (app/motion.js): no transition, it moves itself. */
  rotate: calc(var(--sway) + var(--swing, 0deg));
}
.ed-cord {
  display: block;
  width: 2px;
  height: var(--drop);
  margin: 0 auto;
  background: #2b2622;
}
.ed-cap {
  display: block;
  width: 10px;
  height: 7px;
  margin: 0 auto;
  border-radius: 2px 2px 1px 1px;
  background: repeating-linear-gradient(180deg, #8a7a5c 0 1.5px, #3d352a 1.5px 3px);
}
.ed-glass {
  position: relative;
  display: block;
  width: 18px;
  height: 25px;
  margin: -1px auto 0;
  border-radius: 46% 46% 50% 50% / 38% 38% 62% 62%;
  background: radial-gradient(circle at 50% 58%, #fff6cf 0 12%, #ffc163 32%, rgba(255, 150, 50, 0.6) 60%, rgba(255, 130, 40, 0.25) 100%);
  border: 1px solid rgba(255, 225, 170, 0.55);
  box-shadow: inset 0 -3px 5px rgba(255, 120, 30, 0.35), inset 2px 2px 3px rgba(255, 255, 255, 0.45);
}
.ed-glass svg {
  position: absolute;
  left: 3px;
  top: 2px;
  width: 11px;
  height: 17px;
  filter: drop-shadow(0 0 2px #ffd27a);
}
/* The glow: a pre-blurred halo that only fades */
.ed-halo {
  position: absolute;
  left: 50%;
  top: calc(var(--drop) + 4px);
  width: 64px;
  height: 64px;
  margin-left: -32px;
  border-radius: 50%;
  background: radial-gradient(closest-side, rgba(255, 190, 90, 0.55), rgba(255, 150, 50, 0.18) 55%, transparent);
  z-index: -1;
}
/* Bulbs glow steadily; the flicker comes in short, random stutters (lights.js), so between
   them they cost nothing at all. */
/* Over the shelf title */
.hud { position: relative; }
/* Strung behind the shelf name, so the bulbs backlight the sign instead of hiding it */
.edison.over-title {
  top: 46px;
  z-index: 0;
}
.tape { z-index: 1; }
/* Over the panel titles */
.panel-grab .edison {
  top: 4px;
  left: 36%;
  right: 22%; /* clear of the close button */
  z-index: 0;
}
.panel-grab .x { position: relative; z-index: 1; }
/* A single bulb hanging off each section heading */
.p-h {
  position: relative;
  display: inline-block;
  rotate: var(--tilt, -0.6deg);
}
.p-h::after {
  content: "";
  position: absolute;
  right: -26px;
  top: -16px;
  width: 14px;
  height: 20px;
  border-radius: 46% 46% 50% 50% / 38% 38% 62% 62%;
  background: radial-gradient(circle at 50% 58%, #fff6cf 0 12%, #ffc163 34%, rgba(255, 150, 50, 0.55) 65%, rgba(255, 130, 40, 0.2));
  box-shadow: 0 -10px 0 -5px #3d352a, 0 0 16px 4px rgba(255, 170, 70, 0.45);
}
.p-h.flick::after { animation: ed-stutter 0.45s steps(1); }
@keyframes ed-stutter {
  0%, 100% { opacity: 1; }
  20% { opacity: 0.2; }
  35% { opacity: 1; }
  55% { opacity: 0.35; }
}
.p-h:nth-of-type(2n) { --tilt: 0.8deg; }
.p-h:nth-of-type(3n) { --tilt: -1.4deg; }
.p-h:nth-of-type(5n) { --tilt: 1.2deg; }
.panel-grab h2 { rotate: -1.5deg; }

/* Brighter neon on the shelf name: a white core and a wide bloom (static), slightly crooked */
.tape-item[aria-selected="true"] b {
  rotate: -2deg;
  text-shadow:
    0 0 1px #fff,
    0 0 4px #fff,
    0 0 12px color-mix(in srgb, var(--neon, #e7ff3d) 90%, transparent),
    0 0 28px color-mix(in srgb, var(--neon, #e7ff3d) 70%, transparent),
    0 0 60px color-mix(in srgb, var(--neon, #e7ff3d) 45%, transparent);
  /* the glow is painted once; the flicker only fades it (opacity) */
}