.al-tool-shell--substrate {
  --al-substrate-accent: #2c6b4a;
  --al-substrate-soft: #eef7f2;
  --al-substrate-line: rgba(29, 79, 56, 0.13);
}

.al-tool-shell--substrate .al-substrate-workspace {
  align-items: start;
}

.al-tool-shell--substrate .al-substrate-intro {
  max-width: 66ch;
  margin: calc(var(--al-tool-space-2) * -1) 0 var(--al-tool-space-5);
  color: var(--al-tool-color-muted);
  line-height: 1.55;
}

.al-tool-shell--substrate .al-substrate-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: var(--al-tool-space-3) 0 var(--al-tool-space-5);
}

.al-tool-shell--substrate .al-substrate-pills span,
.al-tool-shell--substrate .al-substrate-gallons {
  width: fit-content;
  border-radius: 999px;
  background: var(--al-substrate-soft);
  color: #24583e;
  padding: 4px 10px;
  font-size: .78rem;
  font-weight: 730;
}

.al-tool-shell--substrate .al-substrate-input-card {
  overflow: hidden;
}

.al-tool-shell--substrate .al-substrate-dimension-grid {
  grid-template-columns: 1fr;
}

.al-tool-shell--substrate .al-substrate-form-choice {
  display: grid;
  gap: var(--al-tool-space-2);
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.al-tool-shell--substrate .al-substrate-segment {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

.al-tool-shell--substrate .al-substrate-segment--two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.al-tool-shell--substrate .al-substrate-layout-segment,
.al-tool-shell--substrate .al-substrate-buffer-segment { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.al-tool-shell--substrate .al-substrate-depth-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.al-tool-shell--substrate .al-substrate-choice { display: grid; gap: var(--al-tool-space-2); min-width: 0; margin: 0; padding: 0; border: 0; }

.al-tool-shell--substrate .al-substrate-preset-label {
  display: grid;
  gap: 2px;
  place-items: center;
  line-height: 1.15;
}

.al-tool-shell--substrate .al-substrate-preset-label strong {
  font: inherit;
}

.al-tool-shell--substrate .al-substrate-preset-label small {
  font-size: 0.68rem;
  font-weight: 620;
  opacity: 0.74;
}

.al-tool-shell--substrate .al-substrate-preview { display: grid; gap: var(--al-tool-space-3); }
.al-tool-shell--substrate .al-substrate-view-modes { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 6px; padding: 4px; border: 1px solid var(--al-substrate-line); border-radius: var(--al-tool-radius-lg); background: #f7fbf8; }
.al-tool-shell--substrate .al-substrate-view-modes button { min-height: 34px; border: 0; border-radius: calc(var(--al-tool-radius-lg) - 4px); background: transparent; color: var(--al-tool-color-muted); font: inherit; font-size: .82rem; font-weight: 760; cursor: pointer; }
.al-tool-shell--substrate .al-substrate-view-modes button[aria-pressed="true"] { background: #fff; color: var(--al-substrate-accent); box-shadow: 0 2px 7px rgba(16,32,25,.1); }
.al-tool-shell--substrate .al-substrate-view-modes button:focus-visible { outline: 3px solid rgba(44,107,74,.28); outline-offset: 1px; }
.al-tool-shell--substrate .al-substrate-preview__stage { position: relative; display: grid; min-height: 270px; place-items: center; overflow: hidden; padding: var(--al-tool-space-3); background: linear-gradient(180deg, #f9fcfa, #edf6f1); border: 1px solid rgba(16,32,25,.09); border-radius: var(--al-tool-radius-lg); }
.al-tool-shell--substrate .al-substrate-preview__three { width: 100%; height: 250px; touch-action: pan-y; }
.al-tool-shell--substrate .al-substrate-preview__three canvas { display: block; width: 100%; height: 100%; cursor: grab; touch-action: pan-y; }
.al-tool-shell--substrate .al-substrate-preview__three canvas:active { cursor: grabbing; }
.al-tool-shell--substrate .al-substrate-preview__prompt { position: absolute; inset: 0; display: grid; place-items: center; margin: 0; color: var(--al-tool-color-muted); font-size: .9rem; text-align: center; }
.al-tool-shell--substrate .al-substrate-preview__prompt[hidden] { display: none; }
.al-tool-shell--substrate .al-tool-result-summary { scroll-margin-top: var(--al-tool-space-4); }
.al-tool-shell--substrate .al-substrate-preview__dimensions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 1px; margin: 0; overflow: hidden; border: 1px solid var(--al-substrate-line); border-radius: var(--al-tool-radius-lg); background: var(--al-substrate-line); }
.al-tool-shell--substrate .al-substrate-preview__dimensions div { display: grid; gap: 2px; min-width: 0; padding: 9px 10px; background: #fff; }
.al-tool-shell--substrate .al-substrate-preview__dimensions dt { color: var(--al-tool-color-muted); font-size: .68rem; font-weight: 710; }
.al-tool-shell--substrate .al-substrate-preview__dimensions dd { margin: 0; color: var(--al-tool-color-ink); font-size: .82rem; font-weight: 760; }
.al-tool-shell--substrate .al-substrate-preview__caption { margin: 0; color: var(--al-tool-color-muted); text-align: center; }
.al-tool-shell--substrate .al-substrate-summary-metrics { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1px; margin: var(--al-tool-space-4) 0; overflow: hidden; border: 1px solid var(--al-substrate-line); border-radius: var(--al-tool-radius-lg); background: var(--al-substrate-line); }
.al-tool-shell--substrate .al-substrate-summary-metrics div { display: grid; gap: 3px; background: #fff; padding: 12px; }
.al-tool-shell--substrate .al-substrate-summary-metrics dt { color: var(--al-tool-color-muted); font-size: .76rem; font-weight: 680; }
.al-tool-shell--substrate .al-substrate-summary-metrics dd { margin: 0; color: var(--al-tool-color-ink); font-weight: 800; }
.al-tool-shell--substrate .al-substrate-math { margin: 0; color: var(--al-tool-color-muted); line-height: 1.55; }
.al-tool-shell--substrate .al-substrate-math summary { cursor: pointer; font-weight: 760; }
.al-tool-shell--substrate .al-substrate-math > div { display: grid; gap: 3px; margin-top: 8px; }

.al-tool-shell--substrate .al-tool-input.is-invalid {
  border-color: rgba(173, 42, 42, 0.72);
  box-shadow: 0 0 0 3px rgba(173, 42, 42, 0.08);
}

.al-tool-shell--substrate .al-substrate-alert {
  display: grid;
  gap: 3px;
  margin-top: var(--al-tool-space-4);
  border: 1px solid rgba(173, 42, 42, 0.2);
  border-radius: var(--al-tool-radius-lg);
  background: #fff7f5;
  color: #7b2525;
  padding: var(--al-tool-space-4);
}

.al-tool-shell--substrate .al-substrate-assumption,
.al-tool-shell--substrate .al-substrate-method-note {
  margin: 0;
  color: var(--al-tool-color-muted);
  font-size: 0.86rem;
  line-height: 1.55;
}

.al-tool-shell--substrate .al-substrate-result {
  display: grid;
  gap: var(--al-tool-space-5);
  margin-top: var(--al-tool-space-5);
  outline: none;
}

.al-tool-shell--substrate .al-substrate-result:focus-visible {
  border-radius: var(--al-tool-radius-lg);
  box-shadow: var(--al-tool-shadow-focus);
}

.al-tool-shell--substrate .al-substrate-plan-section {
  display: grid;
  gap: var(--al-tool-space-4);
}

.al-tool-shell--substrate .al-substrate-plan-heading {
  display: grid;
  gap: 3px;
}

.al-tool-shell--substrate .al-substrate-plan-heading p {
  margin: 0;
}

.al-tool-shell--substrate .al-substrate-plan-grid {
  display: grid;
  gap: var(--al-tool-space-4);
}

.al-tool-shell--substrate .al-substrate-plan-card {
  display: grid;
  gap: var(--al-tool-space-4);
  min-width: 0;
  border: 1px solid var(--al-substrate-line);
  border-radius: var(--al-tool-radius-xl);
  background: #fff;
  padding: var(--al-tool-space-5);
  box-shadow: 0 14px 38px rgba(16, 32, 25, 0.06);
}

.al-tool-shell--substrate .al-substrate-plan-card__head,
.al-tool-shell--substrate .al-substrate-plan-card__footer {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--al-tool-space-4);
}

.al-tool-shell--substrate .al-substrate-plan-card__head h3 {
  margin: 4px 0 0;
  color: var(--al-tool-color-ink);
  font-size: clamp(1.05rem, 2vw, 1.28rem);
  line-height: 1.25;
}

.al-tool-shell--substrate .al-substrate-plan-card__supplier,
.al-tool-shell--substrate .al-substrate-detail-label {
  display: block;
  margin: 0;
  color: var(--al-tool-color-muted);
  font-size: 0.75rem;
  font-weight: 760;
  letter-spacing: 0.035em;
  text-transform: uppercase;
}

.al-tool-shell--substrate .al-substrate-package-block {
  display: grid;
  gap: 8px;
  border: 1px solid var(--al-substrate-line);
  border-radius: var(--al-tool-radius-lg);
  background: #f8fbf9;
  padding: var(--al-tool-space-4);
}

.al-tool-shell--substrate .al-substrate-package-list {
  display: grid;
  gap: 8px;
  margin: 0;
  padding: 0;
  list-style: none;
}

.al-tool-shell--substrate .al-substrate-package-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--al-tool-space-3);
  margin: 0;
  color: var(--al-tool-color-text);
}

.al-tool-shell--substrate .al-substrate-package-list li span {
  color: var(--al-substrate-accent);
  font-size: 0.8rem;
  font-weight: 720;
}

.al-tool-shell--substrate .al-substrate-plan-metrics {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  margin: 0;
  overflow: hidden;
  border: 1px solid var(--al-substrate-line);
  border-radius: var(--al-tool-radius-lg);
  background: var(--al-substrate-line);
}

.al-tool-shell--substrate .al-substrate-plan-metrics div {
  display: grid;
  gap: 3px;
  min-width: 0;
  background: #fff;
  padding: 12px;
}

.al-tool-shell--substrate .al-substrate-plan-metrics dt {
  color: var(--al-tool-color-muted);
  font-size: 0.76rem;
  font-weight: 680;
}

.al-tool-shell--substrate .al-substrate-plan-metrics dd {
  margin: 0;
  color: var(--al-tool-color-ink);
  font-size: 1rem;
  font-weight: 800;
}

.al-tool-shell--substrate .al-substrate-plan-card__footer > div {
  display: grid;
  gap: 4px;
}

.al-tool-shell--substrate .al-substrate-plan-card__footer > div strong {
  color: var(--al-tool-color-ink);
  font-size: 1.08rem;
}

.al-tool-shell--substrate .al-substrate-plan-actions {
  display: flex !important;
  flex-wrap: wrap;
  justify-content: flex-end;
  gap: 8px !important;
}

.al-tool-shell--substrate .al-substrate-region-note {
  margin: 0;
  color: var(--al-tool-color-muted);
  font-size: 0.86rem;
}

.al-tool-shell--substrate .al-substrate-editorial {
  display: grid;
  gap: var(--al-tool-space-3);
  max-width: 74ch;
  margin-top: var(--al-tool-space-7);
  border-top: 1px solid var(--al-substrate-line);
  padding-top: var(--al-tool-space-6);
}

.al-tool-shell--substrate .al-substrate-editorial h2 {
  margin-top: var(--al-tool-space-3);
}

.al-tool-shell--substrate .al-substrate-editorial p {
  margin: 0;
  color: var(--al-tool-color-text);
  line-height: 1.65;
}

@media (min-width: 760px) {
  .al-tool-shell--substrate .al-substrate-dimension-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .al-tool-shell--substrate .al-substrate-plan-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

}

@media (max-width: 639px) {
  .al-tool-shell--substrate .al-substrate-segment {
    grid-template-columns: 1fr;
  }

  .al-tool-shell--substrate .al-substrate-segment--two,
  .al-tool-shell--substrate .al-substrate-layout-segment,
  .al-tool-shell--substrate .al-substrate-buffer-segment,
  .al-tool-shell--substrate .al-substrate-depth-grid,
  .al-tool-shell--substrate .al-substrate-summary-metrics,
  .al-tool-shell--substrate .al-substrate-preview__dimensions { grid-template-columns: 1fr; }

  .al-tool-shell--substrate .al-substrate-plan-card__head,
  .al-tool-shell--substrate .al-substrate-plan-card__footer {
    display: grid;
  }

  .al-tool-shell--substrate .al-substrate-plan-card {
    padding: var(--al-tool-space-4);
  }

  .al-tool-shell--substrate .al-substrate-plan-card__footer .al-tool-button {
    width: 100%;
  }

  .al-tool-shell--substrate .al-substrate-plan-actions {
    justify-content: stretch;
  }
}

@media (prefers-reduced-motion: reduce) {
  .al-tool-shell--substrate * {
    scroll-behavior: auto !important;
  }
}