.al-tools-app.al-tool-shell--ph-co2 {
  --al-phco2-low: #2f6f9f;
  --al-phco2-ok: #2c6b4a;
  --al-phco2-warn: #9a6a15;
  --al-phco2-grid: rgba(16, 32, 25, 0.08);
  --al-phco2-curve: #2f6f9f;
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-card,
.al-tools-app.al-tool-shell--ph-co2 .al-phco2-preview {
  position: relative;
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-mode-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: var(--al-tool-space-2);
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-mode-card {
  position: relative;
  display: grid;
  gap: 4px;
  min-width: 0;
  min-height: 72px;
  padding: var(--al-tool-space-3);
  border: 1px solid rgba(44, 107, 74, 0.13);
  border-radius: var(--al-tool-radius-lg);
  background: rgba(255, 255, 255, 0.72);
  color: var(--al-tool-color-text);
  cursor: pointer;
  transition:
    background-color var(--al-tool-transition-med),
    border-color var(--al-tool-transition-med),
    box-shadow var(--al-tool-transition-med),
    transform var(--al-tool-transition-fast);
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-mode-card input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-mode-card strong {
  color: var(--al-tool-color-ink);
  font-size: 0.9rem;
  font-weight: 740;
  line-height: 1.15;
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-mode-card span {
  color: var(--al-tool-color-muted);
  font-size: 0.78rem;
  font-weight: 620;
  line-height: 1.2;
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-mode-card:hover,
.al-tools-app.al-tool-shell--ph-co2 .al-phco2-mode-card.is-active {
  border-color: rgba(44, 107, 74, 0.25);
  background: rgba(255, 255, 255, 0.96);
  box-shadow: 0 8px 18px rgba(16, 32, 25, 0.045);
  transform: translateY(-1px);
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-mode-card.is-active {
  box-shadow:
    inset 0 0 0 1px rgba(44, 107, 74, 0.12),
    0 10px 22px rgba(16, 32, 25, 0.055);
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-pane {
  display: grid;
  gap: var(--al-tool-space-3);
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-preview {
  min-height: 0;
  overflow: hidden;
  isolation: isolate;
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-preview::before {
  content: "";
  position: absolute;
  inset: 18% 12% 18%;
  z-index: 0;
  border-radius: 999px;
  background:
    radial-gradient(circle at 42% 44%, rgba(80, 190, 220, 0.14), rgba(80, 190, 220, 0) 62%),
    radial-gradient(circle at 70% 38%, rgba(104, 177, 151, 0.12), rgba(104, 177, 151, 0) 58%);
  filter: blur(54px);
  opacity: 0.46;
  pointer-events: none;
}

.al-tools-app.al-tool-shell--ph-co2 .al-tool-preview__head,
.al-tools-app.al-tool-shell--ph-co2 .al-phco2-preview__stage,
.al-tools-app.al-tool-shell--ph-co2 .al-phco2-preview__caption {
  position: relative;
  z-index: 1;
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-preview__stage {
  display: grid;
  gap: var(--al-tool-space-4);
  min-height: 316px;
  align-content: center;
  padding: var(--al-tool-space-5) var(--al-tool-space-5) var(--al-tool-space-4);
  background:
    radial-gradient(ellipse at 50% 82%, rgba(47, 111, 159, 0.1), rgba(47, 111, 159, 0) 56%),
    linear-gradient(180deg, rgba(255, 255, 255, 0), rgba(243, 247, 245, 0.62));
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-indicator {
  display: grid;
  grid-template-columns: auto auto;
  gap: 4px 8px;
  align-items: baseline;
  justify-content: center;
  width: fit-content;
  min-width: 128px;
  margin-inline: auto;
  padding: var(--al-tool-space-3) var(--al-tool-space-4);
  border: 1px solid rgba(16, 32, 25, 0.08);
  border-radius: var(--al-tool-radius-pill);
  background: rgba(255, 255, 255, 0.72);
  box-shadow: 0 10px 22px rgba(16, 32, 25, 0.055);
  transition:
    border-color var(--al-tool-transition-med),
    box-shadow var(--al-tool-transition-med);
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-indicator::before {
  content: "";
  width: 9px;
  height: 9px;
  border-radius: 999px;
  background: var(--al-phco2-low);
  box-shadow: 0 0 0 4px rgba(47, 111, 159, 0.1);
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-indicator[data-phco2-level="ok"]::before {
  background: var(--al-phco2-ok);
  box-shadow: 0 0 0 4px rgba(44, 107, 74, 0.12);
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-indicator[data-phco2-level="warn"]::before {
  background: var(--al-phco2-warn);
  box-shadow: 0 0 0 4px rgba(154, 106, 21, 0.13);
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-indicator span {
  color: var(--al-tool-color-ink);
  font-size: 1.2rem;
  font-weight: 820;
  line-height: 1;
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-indicator small {
  color: var(--al-tool-color-muted);
  font-size: 0.78rem;
  font-weight: 720;
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-chart {
  min-height: 190px;
  border: 1px solid rgba(16, 32, 25, 0.08);
  border-radius: calc(var(--al-tool-radius-lg) + 3px);
  background:
    linear-gradient(180deg, rgba(255, 255, 255, 0.92), rgba(248, 252, 250, 0.9)),
    var(--al-tool-color-surface);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.72),
    0 16px 30px rgba(16, 32, 25, 0.07);
  overflow: hidden;
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-chart svg {
  display: block;
  width: 100%;
  height: auto;
  min-height: 190px;
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-chart text {
  fill: rgba(38, 52, 46, 0.62);
  font-size: 8px;
  font-weight: 700;
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-zone-low {
  fill: rgba(47, 111, 159, 0.055);
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-zone-ok {
  fill: rgba(44, 107, 74, 0.07);
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-zone-high {
  fill: rgba(154, 106, 21, 0.06);
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-grid-line {
  stroke: var(--al-phco2-grid);
  stroke-width: 1;
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-curve {
  fill: none;
  stroke: var(--al-phco2-curve);
  stroke-linecap: round;
  stroke-linejoin: round;
  stroke-width: 2.4;
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-marker {
  fill: #fff;
  stroke: var(--al-tool-color-primary);
  stroke-width: 2;
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-preview__caption {
  width: fit-content;
  max-width: calc(100% - var(--al-tool-space-8));
  margin: 0 auto var(--al-tool-space-4);
  padding: var(--al-tool-space-2) var(--al-tool-space-3);
  border: 1px solid rgba(16, 32, 25, 0.065);
  border-radius: var(--al-tool-radius-pill);
  background: rgba(255, 255, 255, 0.68);
  color: rgba(38, 52, 46, 0.78);
  font-size: 0.84rem;
  line-height: 1.35;
  text-align: center;
  box-shadow: 0 8px 18px rgba(16, 32, 25, 0.045);
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-reco-list {
  display: grid;
  gap: var(--al-tool-space-2);
  margin: var(--al-tool-space-2) 0 0;
  padding-left: 1.1rem;
  color: var(--al-tool-color-text);
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-detail-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: var(--al-tool-space-3);
  margin-top: var(--al-tool-space-2);
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-detail-grid div {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-detail-grid dt {
  color: var(--al-tool-color-muted);
  font-size: 0.78rem;
  font-weight: 700;
}

.al-tools-app.al-tool-shell--ph-co2 .al-phco2-detail-grid dd {
  margin: 0;
  color: var(--al-tool-color-ink);
  font-size: 0.96rem;
  font-weight: 760;
}

@media (max-width: 639px) {
  .al-tools-app.al-tool-shell--ph-co2 .al-phco2-mode-grid {
    grid-template-columns: 1fr;
  }

  .al-tools-app.al-tool-shell--ph-co2 .al-phco2-preview__stage {
    min-height: 250px;
    padding: var(--al-tool-space-4);
  }

  .al-tools-app.al-tool-shell--ph-co2 .al-phco2-chart,
  .al-tools-app.al-tool-shell--ph-co2 .al-phco2-chart svg {
    min-height: 168px;
  }

  .al-tools-app.al-tool-shell--ph-co2 .al-phco2-preview__caption {
    max-width: calc(100% - var(--al-tool-space-6));
    margin-bottom: var(--al-tool-space-3);
    font-size: 0.8rem;
  }

  .al-tools-app.al-tool-shell--ph-co2 .al-phco2-detail-grid {
    grid-template-columns: 1fr;
  }
}

@media (prefers-reduced-motion: reduce) {
  .al-tools-app.al-tool-shell--ph-co2 .al-phco2-mode-card,
  .al-tools-app.al-tool-shell--ph-co2 .al-phco2-indicator {
    transition-duration: 1ms;
  }
}