.pie {
  --pie-head-h: 130px;
  --pie-head-w: calc(var(--pie-head-h) * 121 / 150);
  --pie-rx: 80px;
  --pie-ry: 94px;
  --pie-pill-h: 26px;
  --pie-knob: 30px;
  --pie-cap: calc(var(--pie-knob) / 2 + 9px);

  position: fixed;
  width: 0;
  height: 0;
  z-index: var(--z-pie);

  opacity: 0;
  transform: scale(.92);
  transition: opacity .12s ease-out, transform .12s ease-out;
}

.pie[data-in] {
  opacity: 1;
  transform: scale(1);
}

.pie__hub {
  position: absolute;
  left: 0;
  top: 0;
  width: var(--pie-head-w);
  height: var(--pie-head-h);
  transform: translate(-50%, -41%);
  background-image: url("../assets/pie-head.webp?v=3");
  background-repeat: no-repeat;
  background-size: 2500% 100%;
  background-position: 0 0;
}

.pie__item {
  position: absolute;
  height: var(--pie-pill-h);
  padding: 0;
  border: 0;
  background: none;
  font: inherit;
  filter:
    drop-shadow( 1px 0 0 var(--stroke))
    drop-shadow(-1px 0 0 var(--stroke))
    drop-shadow(0  1px 0 var(--stroke))
    drop-shadow(0 -1px 0 var(--stroke))
    drop-shadow(0 1px 2px rgba(0, 0, 0, .35));
}

.pie__item[data-side="right"]  { transform: translate(0, -50%); }
.pie__item[data-side="left"]   { transform: translate(-100%, -50%); }
.pie__item[data-side="top"]    { transform: translate(-50%, -100%); }
.pie__item[data-side="bottom"] { transform: translate(-50%, 0); }

.pie__face {
  position: absolute;
  inset: 0;
  border-radius: 999px;
  background: var(--panel-grad);
  box-shadow: var(--bevel-hi), var(--bevel-lo);
}

.pie__face::before {
  content: "";
  position: absolute;
  inset: 1px 1px 55% 1px;
  border-radius: 999px 999px 4px 4px;
  background: var(--gloss-grad);
}

.pie__knob {
  position: absolute;
  width: var(--pie-knob);
  height: var(--pie-knob);
  border-radius: 50%;
  transform: translate(-50%, -50%);
  background: radial-gradient(circle at 36% 30%,
              var(--ui-200) 0%, var(--ui-320) 52%, var(--ui-600) 100%);
}

.pie__item[data-side="right"]  .pie__knob { left: 0;    top: 50%; }
.pie__item[data-side="left"]   .pie__knob { left: 100%; top: 50%; }
.pie__item[data-side="top"]    .pie__knob { left: 50%;  top: 100%; }
.pie__item[data-side="bottom"] .pie__knob { left: 50%;  top: 0; }

.pie__label {
  position: relative;
  display: block;
  max-width: 240px;
  line-height: var(--pie-pill-h);
  font-size: 13px;
  font-weight: 700;
  color: var(--ink);
  text-shadow: 0 1px 1px var(--ink-shadow);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.pie__item[data-side="right"] .pie__label { padding: 0 14px 0 var(--pie-cap); }
.pie__item[data-side="left"]  .pie__label { padding: 0 var(--pie-cap) 0 14px; }
.pie__item[data-side="top"]    .pie__label,
.pie__item[data-side="bottom"] .pie__label { padding: 0 16px; }

.pie__item[data-on] .pie__label { color: var(--plumbob); }
.pie__item[data-on] .pie__knob {
  background: radial-gradient(circle at 36% 30%,
              #e2ffd6 0%, var(--plumbob) 34%, var(--plumbob-mid) 68%, var(--plumbob-deep) 100%);
}

.pie__item:focus-visible {
  outline: 2px solid var(--meter);
  outline-offset: 3px;
}

@media (prefers-reduced-motion: reduce) {
  .pie {
    transition: none;
    transform: none;
  }
  .pie[data-in] { transform: none; }
}