[data-kw-shell="v1"] .tool-shell {
  display: grid;
  grid-template-columns: minmax(320px, 0.86fr) minmax(0, 1.14fr);
  gap: 20px;
  align-items: start;
  min-width: 0;
}

[data-kw-shell="v1"] [hidden] {
  display: none !important;
}

[data-kw-shell="v1"] .calculator-panel,
[data-kw-shell="v1"] .result-panel {
  min-width: 0;
  box-sizing: border-box;
  padding: 22px;
  border: 1px solid var(--kw-line, #d7e3dc);
  background: var(--kw-surface, #fff);
}

[data-kw-shell="v1"] .calculator-panel,
[data-kw-shell="v1"] #calc-form {
  display: grid;
  gap: 22px;
}

[data-kw-shell="v1"] .result-panel {
  background: var(--kw-page, #fbfdfb);
}

[data-kw-shell="v1"] .result-panel h2,
[data-kw-shell="v1"] .result-panel h3,
[data-kw-shell="v1"] .scope-card h2 {
  margin: 0;
  color: var(--kw-ink, #14352a);
  font-size: 18px;
  line-height: 1.4;
}

[data-kw-shell="v1"] .result-panel h3,
[data-kw-shell="v1"] .scope-card h2 {
  font-size: 16px;
}

[data-kw-shell="v1"] .mode-fieldset {
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

[data-kw-shell="v1"] .mode-fieldset legend,
[data-kw-shell="v1"] label {
  color: var(--kw-ink, #14352a);
  font-size: 13px;
  font-weight: 700;
}

[data-kw-shell="v1"] .mode-fieldset legend {
  margin-bottom: 8px;
}

[data-kw-shell="v1"] .mode-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
}

[data-kw-shell="v1"] .mode-option {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  min-height: 44px;
  box-sizing: border-box;
  padding: 8px 10px;
  border: 1px solid var(--kw-line-strong, #abc5b5);
  border-radius: 2px;
  background: #fff;
  cursor: pointer;
}

[data-kw-shell="v1"] .mode-option:has(input:checked) {
  border-color: var(--kw-accent, #258357);
  background: #f2f8f4;
  box-shadow: inset 3px 0 0 var(--kw-accent, #258357);
}

[data-kw-shell="v1"] .mode-option input {
  width: 17px;
  height: 17px;
  margin: 0;
  accent-color: var(--kw-accent, #258357);
  flex: 0 0 auto;
}

[data-kw-shell="v1"] .field-group {
  display: grid;
  gap: 7px;
  min-width: 0;
}

[data-kw-shell="v1"] .input-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 13px;
  min-width: 0;
}

[data-kw-shell="v1"] .value-field {
  align-content: start;
  padding: 12px;
  border: 1px solid var(--kw-line, #d7e3dc);
  background: #fff;
}

[data-kw-shell="v1"] .value-field.is-target {
  border-color: var(--kw-accent, #258357);
  background: #f2f8f4;
}

[data-kw-shell="v1"] .field-label-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  min-width: 0;
}

[data-kw-shell="v1"] .target-badge {
  flex: 0 0 auto;
  padding: 2px 5px;
  border: 1px solid #94bca4;
  border-radius: 2px;
  color: #1d6845;
  font-size: 10px;
  font-weight: 700;
  line-height: 1.3;
}

[data-kw-shell="v1"] input[type="number"],
[data-kw-shell="v1"] input[type="text"],
[data-kw-shell="v1"] select {
  width: 100%;
  min-width: 0;
  min-height: 44px;
  box-sizing: border-box;
  padding: 8px 10px;
  border: 1px solid var(--kw-line-strong, #abc5b5);
  border-radius: 2px;
  background: #fff;
  color: var(--kw-ink, #14352a);
  font: inherit;
  font-size: 16px;
}

[data-kw-shell="v1"] input[readonly] {
  border-style: dashed;
  background: #f7faf8;
  color: #365b4c;
}

[data-kw-shell="v1"] input[aria-invalid="true"] {
  border-color: #ad3f32;
  background: #fff9f7;
}

[data-kw-shell="v1"] input:focus-visible,
[data-kw-shell="v1"] select:focus-visible,
[data-kw-shell="v1"] button:focus-visible,
[data-kw-shell="v1"] .mode-option:has(input:focus-visible) {
  outline: 3px solid #f0a92e;
  outline-offset: 2px;
}

[data-kw-shell="v1"] .value-with-unit {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(82px, 0.58fr);
  gap: 7px;
  min-width: 0;
}

[data-kw-shell="v1"] .help-text,
[data-kw-shell="v1"] .form-error,
[data-kw-shell="v1"] .scope-card p,
[data-kw-shell="v1"] .result-status,
[data-kw-shell="v1"] .meaning-text,
[data-kw-shell="v1"] .rounding-text,
[data-kw-shell="v1"] .curve-empty {
  margin: 0;
  color: var(--kw-muted, #5b7368);
  font-size: 12px;
  line-height: 1.6;
  overflow-wrap: anywhere;
}

[data-kw-shell="v1"] .form-error {
  padding: 9px 10px;
  border-left: 3px solid #ad3f32;
  background: #fff5f2;
  color: #9c3025;
  font-weight: 700;
}

[data-kw-shell="v1"] .button-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

[data-kw-shell="v1"] .button {
  min-height: 42px;
  box-sizing: border-box;
  padding: 8px 14px;
  border: 1px solid var(--kw-line-strong, #abc5b5);
  border-radius: 2px;
  background: #fff;
  color: var(--kw-ink, #14352a);
  cursor: pointer;
  font: inherit;
  font-size: 13px;
}

[data-kw-shell="v1"] .button:hover {
  border-color: var(--kw-accent, #258357);
}

[data-kw-shell="v1"] .button-primary {
  border-color: var(--kw-ink, #14352a);
  background: var(--kw-ink, #14352a);
  color: #fff;
}

[data-kw-shell="v1"] .button-quiet {
  color: var(--kw-muted, #5b7368);
}

[data-kw-shell="v1"] .scope-card {
  display: grid;
  gap: 8px;
  padding-top: 18px;
  border-top: 1px solid var(--kw-line, #d7e3dc);
}

[data-kw-shell="v1"] .formula-line {
  padding: 10px 12px;
  border: 1px solid var(--kw-line, #d7e3dc);
  background: #f7faf8;
  color: var(--kw-ink, #14352a) !important;
  font-family: "Cambria Math", "Times New Roman", serif;
  font-size: 18px !important;
  text-align: center;
}

[data-kw-shell="v1"] .metric-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 8px;
  margin: 16px 0 0;
}

[data-kw-shell="v1"] .metric {
  min-width: 0;
  padding: 11px 12px;
  border: 1px solid var(--kw-line, #d7e3dc);
  background: #fff;
}

[data-kw-shell="v1"] .metric dt {
  color: var(--kw-muted, #5b7368);
  font-size: 11px;
}

[data-kw-shell="v1"] .metric dd {
  margin: 5px 0 0;
  color: var(--kw-ink, #14352a);
  font-size: 15px;
  font-weight: 700;
  overflow-wrap: anywhere;
}

[data-kw-shell="v1"] .metric-emphasis dd {
  color: var(--kw-accent, #258357);
  font-size: 18px;
}

[data-kw-shell="v1"] .calculation-details {
  display: grid;
  gap: 12px;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--kw-line, #d7e3dc);
}

[data-kw-shell="v1"] .details-list {
  display: grid;
  gap: 8px;
  margin: 0;
}

[data-kw-shell="v1"] .details-list > div {
  display: grid;
  grid-template-columns: 92px minmax(0, 1fr);
  gap: 10px;
  padding: 9px 10px;
  border: 1px solid var(--kw-line, #d7e3dc);
  background: #fff;
}

[data-kw-shell="v1"] .details-list dt {
  color: var(--kw-muted, #5b7368);
  font-size: 11px;
  font-weight: 700;
}

[data-kw-shell="v1"] .details-list dd {
  min-width: 0;
  margin: 0;
  color: var(--kw-ink, #14352a);
  font-family: ui-monospace, SFMono-Regular, Consolas, monospace;
  font-size: 12px;
  overflow-wrap: anywhere;
}

[data-kw-shell="v1"] .steps-list {
  display: grid;
  gap: 7px;
  margin: 0;
  padding-left: 23px;
  color: var(--kw-ink, #14352a);
  font-size: 12px;
  line-height: 1.6;
}

[data-kw-shell="v1"] .meaning-text {
  padding: 10px 12px;
  border-left: 3px solid var(--kw-accent, #258357);
  background: #f2f8f4;
  color: var(--kw-ink, #14352a);
}

[data-kw-shell="v1"] .curve-card {
  min-width: 0;
  margin-top: 22px;
  padding-top: 18px;
  border-top: 1px solid var(--kw-line, #d7e3dc);
}

[data-kw-shell="v1"] .curve-heading-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 12px;
}

[data-kw-shell="v1"] #curve-readout {
  color: var(--kw-accent, #258357);
  font-size: 12px;
  font-weight: 700;
  text-align: right;
}

[data-kw-shell="v1"] #decay-curve {
  display: block;
  width: 100%;
  height: auto;
  margin-top: 10px;
  overflow: visible;
  border: 1px solid var(--kw-line, #d7e3dc);
  background: #fff;
}

[data-kw-shell="v1"] .plot-background {
  fill: #f7faf8;
}

[data-kw-shell="v1"] .grid-line {
  stroke: #dce7e0;
  stroke-width: 1;
  stroke-dasharray: 4 4;
}

[data-kw-shell="v1"] .axis-line {
  stroke: #738b7f;
  stroke-width: 1.25;
}

[data-kw-shell="v1"] .axis-tick,
[data-kw-shell="v1"] .axis-label {
  fill: #5b7368;
  font-family: system-ui, sans-serif;
  font-size: 11px;
}

[data-kw-shell="v1"] .axis-label {
  font-size: 12px;
  font-weight: 700;
}

[data-kw-shell="v1"] .curve-line {
  fill: none;
  stroke: var(--kw-accent, #258357);
  stroke-width: 3;
  stroke-linecap: round;
  stroke-linejoin: round;
}

[data-kw-shell="v1"] .current-guide {
  stroke: #ca8a1b;
  stroke-width: 1.5;
  stroke-dasharray: 5 4;
}

[data-kw-shell="v1"] .current-point {
  fill: #fff;
  stroke: #ca8a1b;
  stroke-width: 4;
}

[data-kw-shell="v1"] .curve-empty {
  margin-top: 8px;
  text-align: center;
}

@media (max-width: 900px) {
  [data-kw-shell="v1"] .tool-shell {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 600px) {
  [data-kw-shell="v1"] .calculator-panel,
  [data-kw-shell="v1"] .result-panel {
    padding: 16px;
  }

  [data-kw-shell="v1"] .mode-grid,
  [data-kw-shell="v1"] .input-grid,
  [data-kw-shell="v1"] .metric-grid {
    grid-template-columns: 1fr;
  }

  [data-kw-shell="v1"] .button-row {
    display: grid;
    grid-template-columns: 1fr;
  }

  [data-kw-shell="v1"] .button {
    width: 100%;
    min-height: 44px;
  }

  [data-kw-shell="v1"] .details-list > div {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  [data-kw-shell="v1"] .curve-heading-row {
    display: grid;
  }

  [data-kw-shell="v1"] #curve-readout {
    text-align: left;
  }
}

@media (prefers-reduced-motion: reduce) {
  [data-kw-shell="v1"] *,
  [data-kw-shell="v1"] *::before,
  [data-kw-shell="v1"] *::after {
    scroll-behavior: auto;
    transition-duration: 0.01ms;
  }
}