/* ─────────────────────────────────────────────────────────────
   TUW Dairy Pitch Calculator
   Internal sales tool for use sitting in front of a dairy.
   Live cost comparison: bottles vs BiB vs reusable kegs.
   ───────────────────────────────────────────────────────────── */

:root {
  /* TUW palette (canonical) */
  --bg:                #F8E9E2;
  --bg-light:          #FDF3EE;
  --surface:           #FFFFFF;
  --line:              #E6D3CB;

  --mauve:             #B17095;
  --mauve-dark:        #8E5577;
  --plum:              #664B4C;
  --plum-light:        #8A6B6C;
  --plum-soft:         #A89594;

  --good:              #4A8C4A;
  --good-dark:         #2F6B2F;
  --warn:              #C87B2E;
  --bad:               #BA4D4D;

  --winner-bg:         #2A5841;     /* deep mossy green for the keg column */
  --winner-bg-light:   #3D6E54;
  --winner-ink:        #F5EFE0;

  --font-display: 'Playfair Display', Georgia, 'Times New Roman', serif;
  --font-body:    'Inter', -apple-system, system-ui, Helvetica, Arial, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }
body {
  font-family: var(--font-body);
  color: var(--plum);
  background: var(--bg);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

#app {
  max-width: 1400px;
  margin: 0 auto;
  padding: clamp(16px, 3vw, 40px);
}

/* ─── Header ─────────────────────────────────────────────────── */
.pitch-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-bottom: 20px;
  border-bottom: 1px solid var(--line);
  margin-bottom: 28px;
}
.pitch-header__brand {
  display: flex;
  align-items: center;
  gap: 18px;
}
.pitch-header__logo {
  height: 72px;
  width: auto;
}
.pitch-header__title h1 {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(22px, 3vw, 32px);
  color: var(--plum);
  font-weight: 600;
  line-height: 1.1;
}
.pitch-header__title p {
  margin: 4px 0 0;
  font-size: 13px;
  color: var(--plum-light);
}
.pitch-header__region {
  display: flex;
  align-items: center;
  gap: 10px;
}
.pitch-header__region label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--plum-light);
  font-weight: 600;
}
#regionToggle {
  padding: 9px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--surface);
  font-family: inherit;
  font-size: 14px;
  color: var(--plum);
  cursor: pointer;
}
#regionToggle:focus {
  outline: 2px solid var(--mauve);
  outline-offset: 2px;
}

/* ─── Volume control ─────────────────────────────────────────── */
.pitch-volume {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 22px 24px;
  margin-bottom: 24px;
  box-shadow: 0 2px 8px rgba(102, 75, 76, 0.04);
}
.pitch-volume__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px 24px;
  margin-bottom: 14px;
}
.pitch-volume__label {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  color: var(--plum);
}
.pitch-volume__input-group {
  display: flex;
  align-items: baseline;
  gap: 8px;
}
#volumeInput {
  width: 140px;
  padding: 10px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--bg-light);
  font-family: var(--font-display);
  font-size: 28px;
  font-weight: 600;
  color: var(--mauve-dark);
  text-align: right;
}
#volumeInput:focus {
  outline: 2px solid var(--mauve);
  outline-offset: 2px;
  background: #fff;
}
.pitch-volume__unit {
  font-size: 14px;
  color: var(--plum-light);
  font-weight: 500;
}
.pitch-volume__presets {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-left: auto;
}
.pitch-volume__presets button {
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface);
  font-family: inherit;
  font-size: 12px;
  font-weight: 500;
  color: var(--plum);
  cursor: pointer;
  transition: all 0.15s ease;
}
.pitch-volume__presets button:hover {
  border-color: var(--mauve);
  color: var(--mauve-dark);
}
.pitch-volume__presets button.active {
  background: var(--mauve);
  border-color: var(--mauve);
  color: #fff;
}
.pitch-volume__slider {
  width: 100%;
  margin-top: 4px;
  accent-color: var(--mauve);
}
.pitch-volume__hint {
  margin-top: 12px;
  font-size: 13px;
  color: var(--plum-light);
  font-style: italic;
}

/* ─── Three-column comparison ────────────────────────────────── */
.pitch-compare {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
@media (max-width: 980px) {
  .pitch-compare {
    grid-template-columns: 1fr;
    gap: 14px;
  }
}

.pitch-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  box-shadow: 0 2px 8px rgba(102, 75, 76, 0.05);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.pitch-card--winner {
  background: var(--winner-bg);
  color: var(--winner-ink);
  border-color: var(--winner-bg);
  box-shadow: 0 6px 20px rgba(42, 88, 65, 0.25);
}

.pitch-card__head {
  padding: 20px 22px 14px;
  border-bottom: 1px solid var(--line);
}
.pitch-card--winner .pitch-card__head {
  border-bottom-color: rgba(245, 239, 224, 0.18);
}
.pitch-card__eyebrow {
  font-size: 10.5px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--plum-soft);
  margin-bottom: 8px;
}
.pitch-card--winner .pitch-card__eyebrow {
  color: #c9b896;
}
.pitch-card__head h2 {
  margin: 0;
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  color: var(--plum);
}
.pitch-card--winner .pitch-card__head h2 {
  color: var(--winner-ink);
}
.pitch-card__head p {
  margin: 4px 0 0;
  font-size: 12.5px;
  color: var(--plum-light);
}
.pitch-card--winner .pitch-card__head p {
  color: rgba(245, 239, 224, 0.7);
}

.pitch-card__metrics {
  list-style: none;
  margin: 0;
  padding: 16px 22px 12px;
  flex: 1;
}
.pitch-card__metrics li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 7px 0;
  font-size: 13.5px;
}
.pitch-card__metric-label {
  color: var(--plum-light);
}
.pitch-card--winner .pitch-card__metric-label {
  color: rgba(245, 239, 224, 0.7);
}
.pitch-card__metric-value {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--plum);
  font-size: 14.5px;
}
.pitch-card--winner .pitch-card__metric-value {
  color: var(--winner-ink);
}
.pitch-card__metric-value--good {
  color: var(--good);
}
.pitch-card--winner .pitch-card__metric-value--good {
  color: #b8e0b8;
}
.pitch-card__metric-value--reduced {
  color: #94c094;
}
.pitch-card__divider {
  height: 1px;
  background: var(--line);
  margin: 8px 0;
  padding: 0 !important;
}
.pitch-card--winner .pitch-card__divider {
  background: rgba(245, 239, 224, 0.15);
}

.pitch-card__total {
  margin-top: auto;
  padding: 18px 22px;
  background: var(--bg-light);
  border-top: 1px solid var(--line);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 2px;
}
.pitch-card--winner .pitch-card__total {
  background: var(--winner-bg-light);
  border-top-color: rgba(245, 239, 224, 0.15);
}
.pitch-card__total-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-weight: 700;
  color: var(--plum-light);
}
.pitch-card--winner .pitch-card__total-label {
  color: rgba(245, 239, 224, 0.75);
}
.pitch-card__total-value {
  font-family: var(--font-display);
  font-size: 30px;
  font-weight: 700;
  color: var(--plum);
  font-variant-numeric: tabular-nums;
}
.pitch-card--winner .pitch-card__total-value {
  color: var(--winner-ink);
}

/* ─── Delta summary ──────────────────────────────────────────── */
.pitch-delta {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 24px 28px;
  margin-bottom: 24px;
  box-shadow: 0 2px 8px rgba(102, 75, 76, 0.05);
}
.pitch-delta__row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  margin-bottom: 16px;
}
@media (max-width: 720px) {
  .pitch-delta__row { grid-template-columns: 1fr; gap: 18px; }
}
.pitch-delta__eyebrow {
  font-size: 11.5px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  font-weight: 600;
  color: var(--plum-light);
  margin-bottom: 4px;
}
.pitch-delta__value {
  font-family: var(--font-display);
  font-size: clamp(28px, 4vw, 42px);
  font-weight: 700;
  color: var(--plum);
  font-variant-numeric: tabular-nums;
  line-height: 1;
  margin-bottom: 2px;
}
.pitch-delta__value--accent {
  color: var(--mauve-dark);
}
.pitch-delta__sub {
  font-size: 12.5px;
  color: var(--plum-light);
}
.pitch-delta__footnote {
  font-size: 12.5px;
  color: var(--plum-light);
  line-height: 1.5;
  padding-top: 14px;
  border-top: 1px solid var(--line);
}

/* ─── Methodology ────────────────────────────────────────────── */
.pitch-methodology {
  margin-bottom: 24px;
}
.pitch-methodology__toggle {
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 18px;
  font-family: inherit;
  font-size: 13px;
  font-weight: 600;
  color: var(--mauve-dark);
  cursor: pointer;
  transition: background 0.15s ease;
}
.pitch-methodology__toggle:hover {
  background: var(--bg-light);
}
.pitch-methodology__body {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 14px;
  padding: 24px 28px;
  margin-top: 14px;
  font-size: 13.5px;
}
.pitch-methodology__body h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  font-size: 18px;
  color: var(--plum);
  font-weight: 600;
}
.pitch-methodology__body dl {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 8px 18px;
  margin: 16px 0;
}
@media (max-width: 720px) {
  .pitch-methodology__body dl { grid-template-columns: 1fr; gap: 4px 0; }
  .pitch-methodology__body dt { margin-top: 12px; }
}
.pitch-methodology__body dt {
  font-weight: 600;
  color: var(--plum);
}
.pitch-methodology__body dd {
  margin: 0;
  color: var(--plum-light);
}
.pitch-methodology__caveat {
  margin-top: 16px;
  padding-top: 14px;
  border-top: 1px solid var(--line);
  font-style: italic;
  color: var(--plum-light);
  font-size: 12.5px;
}

/* ─── Footer ─────────────────────────────────────────────────── */
.pitch-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  padding-top: 20px;
  border-top: 1px solid var(--line);
  font-size: 11.5px;
  color: var(--plum-light);
}
.pitch-footer__build {
  font-style: italic;
}

/* ─── Counter pulse on value change ──────────────────────────── */
.pitch-card__metric-value.flash,
.pitch-card__total-value.flash,
.pitch-delta__value.flash {
  animation: valueflash 0.4s ease;
}
@keyframes valueflash {
  0% { transform: scale(1); }
  40% { transform: scale(1.05); color: var(--mauve); }
  100% { transform: scale(1); }
}
.pitch-card--winner .pitch-card__metric-value.flash,
.pitch-card--winner .pitch-card__total-value.flash {
  animation: valueflashwinner 0.4s ease;
}
@keyframes valueflashwinner {
  0% { transform: scale(1); }
  40% { transform: scale(1.05); color: #f9e6a8; }
  100% { transform: scale(1); }
}