/* The shower-cost article's four widgets.
 *
 * Scoped to .post-page and shower-* class names, so nothing reaches another page. The colours
 * come from the shared token set in styles.css, which means the light/dark scheme and Auto setting
 * follow automatically. The fill graphics are reading aids, never the only copy of a number.
 */

/* ---------------------------------------------------------------- Shared bits */

.post-page .shower-field-label {
  display: block;
  margin: 0 0 6px;
  font-weight: 600;
}
.post-page .shower-live {
  margin: 14px 0 0;
  font-size: 0.86rem;
  line-height: 1.55;
  color: var(--muted);
}
.post-page .shower-live:empty { display: none; }
.post-page .shower-receipt [hidden],
.post-page .shower-receipt-breakdown[hidden],
.post-page .shower-receipt-button[hidden],
.post-page .shower-flow .error[hidden] { display: none; }

/* ---------------------------------------------------------------- 1. The receipt */

.post-page .shower-receipt-head {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 132px;
  gap: 20px;
  align-items: center;
}
.post-page .shower-receipt-run {
  min-width: 0;
  padding: 16px 18px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--accent);
}
.post-page .shower-receipt-kicker {
  margin: 0 0 8px;
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
}
.post-page .shower-receipt-line {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin: 0;
  padding: 6px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.92rem;
}
.post-page .shower-receipt-line span { color: var(--muted); }
.post-page .shower-receipt-line strong { text-align: right; font-variant-numeric: tabular-nums; }
.post-page .shower-receipt-gallons {
  margin: 8px 0 0;
  font-size: 0.8rem;
  color: var(--muted);
}
.post-page .shower-receipt-figure {
  display: grid;
  place-items: center;
  width: 132px;
  height: 132px;
  border-radius: 50%;
  background: var(--accent);
  color: var(--primary);
}
.post-page .shower-receipt-figure svg { width: 94px; height: 94px; }
.post-page .shower-receipt-button { margin-top: 16px; min-height: 44px; }
.post-page .shower-receipt-breakdown {
  margin-top: 18px;
  padding-top: 16px;
  border-top: 1px dashed var(--border);
}
.post-page .shower-receipt-bars { display: grid; gap: 10px; }
.post-page .shower-receipt-bar-row {
  display: grid;
  grid-template-columns: 62px minmax(0, 1fr) 54px;
  gap: 12px;
  align-items: center;
  font-size: 0.88rem;
}
.post-page .shower-receipt-bar-label { color: var(--muted); font-weight: 600; }
.post-page .shower-receipt-track {
  height: 18px;
  overflow: hidden;
  border-radius: 9px;
  background: var(--border);
}
.post-page .shower-receipt-seg {
  display: block;
  height: 100%;
  min-width: 2px;
  border-radius: 9px 2px 2px 9px;
}
.post-page .shower-receipt-water { background: var(--primary); }
.post-page .shower-receipt-heating { background: var(--highlight); }
.post-page .shower-receipt-bar-row strong { text-align: right; font-variant-numeric: tabular-nums; }
.post-page .shower-receipt-total {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
  margin: 18px 0 0;
  padding: 12px 14px;
  border-left: 4px solid var(--highlight);
  border-radius: 0 10px 10px 0;
  background: var(--accent);
  font-weight: 700;
}
.post-page .shower-receipt-total strong {
  font-size: clamp(1.35rem, 4vw, 1.75rem);
  color: var(--highlight);
  font-variant-numeric: tabular-nums;
}
.post-page .shower-receipt-energy { margin: 10px 0 0; font-size: 0.84rem; color: var(--muted); }
.post-page .shower-receipt-energy strong { color: var(--text); }

/* ---------------------------------------------------------------- 2. The bucket test */

.post-page .shower-flow-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}
.post-page .shower-flow-controls { min-width: 0; }
.post-page .shower-flow-controls input[type="number"] {
  width: 100%;
  max-width: 220px;
}
.post-page .shower-flow-controls .hint { margin: 8px 0 0; }
.post-page .shower-flow-controls .preset-row { margin: 14px 0 0; }
.post-page .shower-flow-controls .error { margin: 10px 0 0; }
.post-page .shower-flow-visual {
  display: grid;
  grid-template-columns: 128px minmax(0, 1fr);
  gap: 18px;
  align-items: center;
}
.post-page .shower-bucket {
  position: relative;
  width: 128px;
  height: 172px;
  overflow: hidden;
  border: 5px solid var(--border);
  border-top-width: 7px;
  border-radius: 10px 10px 22px 22px;
  background: var(--accent);
}
.post-page .shower-bucket-water {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 40%;
  background: var(--primary);
  transition: height 220ms ease;
}
.post-page .shower-bucket-label {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  padding: 4px 9px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--card);
  color: var(--text);
  font-size: 0.8rem;
  font-weight: 700;
  white-space: nowrap;
}
.post-page .shower-flow-readout { min-width: 0; }
.post-page .shower-flow-readout p {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
  margin: 0;
  padding: 7px 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.88rem;
}
.post-page .shower-flow-readout span { color: var(--muted); }
.post-page .shower-flow-readout strong { text-align: right; font-variant-numeric: tabular-nums; }
.post-page .shower-flow-readout .shower-flow-total {
  margin-top: 4px;
  padding-top: 10px;
  border-top: 2px solid var(--border);
  border-bottom: 0;
  font-weight: 700;
}
.post-page .shower-flow-readout .shower-flow-total strong {
  font-size: 1.2rem;
  color: var(--highlight);
}
.post-page .shower-flow-anchors {
  margin: 18px 0 0;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--accent);
}
.post-page .shower-flow-anchors-title {
  margin: 0 0 6px;
  font-size: 0.74rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
}
.post-page .shower-flow-anchors ul { margin: 0; padding-left: 18px; }
.post-page .shower-flow-anchors li { margin: 3px 0; font-size: 0.82rem; line-height: 1.5; }
.post-page .shower-flow-anchors strong { font-variant-numeric: tabular-nums; }

/* ---------------------------------------------------------------- 3. The two-duration timeline */

.post-page .shower-duration-controls {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}
.post-page .shower-duration-control {
  min-width: 0;
  padding: 14px;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: var(--accent);
}
.post-page .shower-slider-label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 10px;
  margin: 0 0 6px;
  font-weight: 600;
}
.post-page .shower-slider-label output {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--highlight);
  font-variant-numeric: tabular-nums;
}
.post-page .shower-duration-control input[type="range"] { margin: 0; }
.post-page .shower-duration-metrics {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  margin: 8px 0 0;
  font-size: 0.82rem;
  color: var(--muted);
}
.post-page .shower-duration-metrics strong { color: var(--text); font-variant-numeric: tabular-nums; }
.post-page .shower-duration-bars { display: grid; gap: 8px; margin: 20px 0 0; }
.post-page .shower-duration-bar-row {
  display: grid;
  grid-template-columns: 48px minmax(0, 1fr);
  gap: 10px;
  align-items: center;
}
.post-page .shower-duration-bar-label {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--muted);
  white-space: nowrap;
}
.post-page .shower-duration-track {
  height: 18px;
  overflow: hidden;
  border-radius: 9px;
  background: var(--border);
}
.post-page .shower-duration-bar {
  display: block;
  height: 100%;
  min-width: 3px;
  border-radius: 9px;
  transition: width 200ms ease;
}
.post-page .shower-duration-bar-base { background: var(--muted); }
.post-page .shower-duration-bar-option { background: var(--highlight); }
.post-page .shower-duration-result {
  margin: 20px 0 0;
  padding: 15px 16px;
  border-left: 4px solid var(--highlight);
  border-radius: 0 12px 12px 0;
  background: var(--accent);
}
.post-page .shower-duration-kicker {
  margin: 0 0 4px;
  font-size: 0.76rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
}
.post-page .shower-duration-stats {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.post-page .shower-duration-stats span {
  display: block;
  font-size: 0.78rem;
  color: var(--muted);
}
.post-page .shower-duration-stats strong {
  display: block;
  font-size: clamp(1.3rem, 4vw, 1.65rem);
  color: var(--highlight);
  font-variant-numeric: tabular-nums;
}
.post-page .shower-duration-year {
  margin: 10px 0 0;
  font-size: 0.92rem;
  line-height: 1.5;
}
.post-page .shower-duration-year strong { font-variant-numeric: tabular-nums; }

/* ---------------------------------------------------------------- 4. Incoming temperature */

.post-page .shower-temperature-detail {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 10px;
}
.post-page .shower-temperature-stat {
  min-width: 0;
  padding: 12px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--accent);
}
.post-page .shower-temperature-stat span {
  display: block;
  font-size: 0.76rem;
  color: var(--muted);
}
.post-page .shower-temperature-stat strong {
  display: block;
  margin-top: 3px;
  font-size: clamp(1.05rem, 3vw, 1.25rem);
  font-variant-numeric: tabular-nums;
  overflow-wrap: anywhere;
}
.post-page .shower-temperature-heat { border-top: 4px solid var(--highlight); }
.post-page .shower-temperature-water { border-top: 4px solid var(--primary); }
.post-page .shower-temperature-total { border-left: 4px solid var(--highlight); }
.post-page .shower-temperature-difference {
  margin: 12px 0 0;
  font-size: 0.86rem;
  font-weight: 600;
  color: var(--muted);
}
.post-page .shower-temperature-rows { display: grid; gap: 8px; margin: 16px 0 0; }
.post-page .shower-temperature-row {
  display: grid;
  grid-template-columns: 46px minmax(0, 1fr) minmax(190px, auto);
  gap: 10px;
  align-items: center;
  padding: 9px 10px;
  border: 1px solid transparent;
  border-radius: 9px;
  font-size: 0.84rem;
  transition: border-color 180ms ease, background 180ms ease;
}
.post-page .shower-temperature-row.is-active {
  border-color: var(--highlight);
  background: var(--accent);
}
.post-page .shower-temperature-row-label { font-weight: 700; white-space: nowrap; }
.post-page .shower-temperature-track {
  display: flex;
  height: 18px;
  overflow: hidden;
  border-radius: 9px;
  background: var(--border);
}
.post-page .shower-temperature-heat-bar {
  display: block;
  height: 100%;
  background: var(--highlight);
  transition: width 220ms ease;
}
.post-page .shower-temperature-water-bar {
  display: block;
  height: 100%;
  background: var(--primary);
}
.post-page .shower-temperature-row-value {
  text-align: right;
  line-height: 1.45;
  font-variant-numeric: tabular-nums;
}

/* ---------------------------------------------------------------- Responsive and motion */

@media (max-width: 760px) {
  .post-page .shower-receipt-head { grid-template-columns: minmax(0, 1fr); }
  .post-page .shower-receipt-figure { width: 104px; height: 104px; justify-self: center; }
  .post-page .shower-receipt-figure svg { width: 74px; height: 74px; }
  .post-page .shower-flow-layout,
  .post-page .shower-duration-controls { grid-template-columns: minmax(0, 1fr); }
  .post-page .shower-temperature-detail { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .post-page .shower-temperature-row {
    grid-template-columns: 46px minmax(0, 1fr);
    gap: 6px 10px;
  }
  .post-page .shower-temperature-row-value {
    grid-column: 2;
    text-align: left;
  }
}

@media (max-width: 480px) {
  .post-page .shower-flow-visual { grid-template-columns: 104px minmax(0, 1fr); gap: 14px; }
  .post-page .shower-bucket { width: 104px; height: 152px; }
  .post-page .shower-receipt-bar-row { grid-template-columns: 58px minmax(0, 1fr) 48px; gap: 8px; }
  .post-page .shower-temperature-detail { grid-template-columns: minmax(0, 1fr); }
  .post-page .shower-duration-stats { gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  .post-page .shower-bucket-water,
  .post-page .shower-duration-bar,
  .post-page .shower-temperature-row,
  .post-page .shower-temperature-heat-bar { transition: none; }
}