/* Reconstitution calculator
   The barrel readout repeats the graduated-rail motif from the article
   layout, turned on its side. The graduations are real: tick spacing is
   derived from the selected syringe, and the fill is the actual draw. */

.pcalc {
  --pc-radius: 1px;
  font-family: var(--ui);
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: var(--pc-radius);
  margin-block: 2rem;
  max-width: 860px;
}

.pcalc-modes {
  display: flex;
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
  padding: .5rem .5rem 0;
  gap: .25rem;
}
.pcalc-seg {
  font-family: var(--mono);
  font-size: .72rem;
  letter-spacing: .09em;
  text-transform: uppercase;
  background: none;
  border: 1px solid transparent;
  border-bottom: 0;
  padding: .7rem 1rem;
  cursor: pointer;
  color: var(--muted);
  border-radius: var(--pc-radius) var(--pc-radius) 0 0;
  margin-bottom: -1px;
}
.pcalc-seg:hover { color: var(--bottle); }
.pcalc-seg.is-active {
  background: var(--panel);
  border-color: var(--rule);
  color: var(--bottle);
  font-weight: 600;
  box-shadow: inset 0 2px 0 var(--endpoint);
}

.pcalc-modecap {
  font-size: .855rem;
  color: var(--muted);
  margin: 0;
  padding: .9rem 1.5rem;
  border-bottom: 1px solid var(--rule-soft);
}

.pcalc-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
}
@media (max-width: 720px) { .pcalc-body { grid-template-columns: minmax(0,1fr); } }

/* --- controls --- */

.pcalc-controls { padding: 1.5rem; display: grid; gap: 1.1rem; align-content: start; }
@media (max-width: 720px) { .pcalc-controls { border-bottom: 1px solid var(--rule); } }

.pcalc-field.pcalc-hidden { display: none; }

.pcalc-field label {
  display: block;
  font-family: var(--mono);
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--muted);
  margin-bottom: .45rem;
}

.pcalc-combo { display: flex; }

.pcalc input[type="number"],
.pcalc select {
  font-family: var(--mono);
  font-size: 1rem;
  color: var(--bottle);
  background: var(--panel);
  border: 1px solid var(--rule);
  border-radius: var(--pc-radius);
  padding: .62rem .7rem;
  width: 100%;
  min-width: 0;
}
.pcalc input[type="number"]:focus,
.pcalc select:focus { border-color: var(--indicator); }

.pcalc-combo input[type="number"] { border-radius: var(--pc-radius) 0 0 var(--pc-radius); }
.pcalc-combo select {
  width: auto;
  flex: 0 0 auto;
  border-radius: 0 var(--pc-radius) var(--pc-radius) 0;
  border-left: 0;
  background: var(--paper);
  font-size: .875rem;
}
.pcalc-unit-static {
  display: flex;
  align-items: center;
  padding: 0 .8rem;
  font-family: var(--mono);
  font-size: .82rem;
  color: var(--muted);
  background: var(--paper);
  border: 1px solid var(--rule);
  border-left: 0;
  border-radius: 0 var(--pc-radius) var(--pc-radius) 0;
}

/* Hide spinners — they encourage nudging a dose one click at a time. */
.pcalc input[type=number]::-webkit-outer-spin-button,
.pcalc input[type=number]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.pcalc input[type=number] { -moz-appearance: textfield; }

/* --- readout --- */

.pcalc-readout { padding: 1.5rem; border-left: 1px solid var(--rule); background: var(--panel); }
@media (max-width: 720px) { .pcalc-readout { border-left: 0; } }

.pcalc-primary { display: flex; align-items: baseline; gap: .5rem; }
.pcalc-figure {
  font-family: var(--mono);
  font-size: clamp(2.5rem, 7vw, 3.6rem);
  font-weight: 600;
  line-height: 1;
  letter-spacing: -.02em;
  color: var(--bottle);
  font-variant-numeric: tabular-nums;
}
.pcalc-figure.is-void { color: var(--rule); }
.pcalc-figure-unit {
  font-family: var(--mono);
  font-size: .82rem;
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--indicator-d);
}
.pcalc-caption { font-size: .86rem; color: var(--muted); margin: .6rem 0 1.4rem; min-height: 2.4em; line-height: 1.45; }

/* barrel */
.pcalc-barrel {
  position: relative;
  height: 30px;
  background: var(--paper);
  border: 1px solid var(--rule);
  border-radius: 2px;
  overflow: hidden;
}
.pcalc-barrel-fill {
  position: absolute; inset: 0 auto 0 0;
  width: 0;
  background: var(--indicator);
  opacity: 1;
  transition: width .16s ease-out;
}
.pcalc-barrel-fill.is-over { background: var(--copper); }
.pcalc-barrel-ticks { position: absolute; inset: 0; }
.pcalc-barrel-ticks span {
  position: absolute; top: 0; width: 1px; background: var(--rule);
  height: 8px;
  background: rgba(12,43,34,.22);
}
.pcalc-barrel-ticks span.is-major { height: 100%; background: rgba(12,43,34,.30); }

.pcalc-barrel-scale {
  display: flex; justify-content: space-between;
  font-family: var(--mono); font-size: .68rem; color: var(--muted);
  margin-top: .4rem; letter-spacing: .06em;
}

/* stats */
.pcalc-stats {
  display: grid; grid-template-columns: repeat(3, minmax(0,1fr));
  gap: 1px; background: var(--rule);
  border: 1px solid var(--rule); border-radius: var(--pc-radius);
  margin: 1.5rem 0 0; overflow: hidden;
}
.pcalc-stats > div { background: var(--panel); padding: .8rem .75rem; }
.pcalc-stats dt {
  font-family: var(--mono); font-size: .62rem; font-weight: 600;
  letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin-bottom: .3rem;
}
.pcalc-stats dd {
  margin: 0; font-family: var(--mono); font-size: .95rem;
  font-variant-numeric: tabular-nums; color: var(--bottle);
}
@media (max-width: 420px) { .pcalc-stats { grid-template-columns: minmax(0,1fr); } }

/* flags */
.pcalc-flags:not(:empty) { margin-top: 1.1rem; display: grid; gap: .5rem; }
.pcalc-flag {
  font-size: .845rem; line-height: 1.45;
  padding: .65rem .8rem;
  border-radius: var(--pc-radius);
  border-left: 3px solid var(--muted);
  background: var(--paper);
  color: var(--muted);
}
.pcalc-flag.is-caution { border-left-color: var(--copper); background: var(--copper-bg); color: #7A3806; }
.pcalc-flag.is-stop { border-left-color: var(--copper); background: var(--copper-bg); color: #7A3806; font-weight: 500; }

.pcalc-foot {
  font-size: .8rem; line-height: 1.5; color: var(--muted);
  margin: 0; padding: 1rem 1.5rem;
  border-top: 1px solid var(--rule-soft); background: var(--paper);
  border-radius: 0 0 var(--pc-radius) var(--pc-radius);
}

@media (prefers-reduced-motion: reduce) {
  .pcalc-barrel-fill { transition: none; }
}