.planetary-calculator {
  --pc-ink: #17211e;
  --pc-muted: #69746f;
  --pc-panel: #fffdf8;
  --pc-line: #d9d6cd;
  --pc-sun: #df743c;
  --pc-planet: #d6a62e;
  --pc-ring: #27796d;
  --pc-carrier: #536c89;
  --pc-danger: #a13b31;
  --pc-shadow: 0 18px 50px rgba(37, 47, 43, 0.08);
  width: 100%;
  max-width: 1180px;
  margin: 0 auto;
  padding: 1.5em 0 3em;
  color: var(--pc-ink);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  text-align: left;
}

.planetary-calculator,
.planetary-calculator * {
  box-sizing: border-box;
}

.planetary-calculator button,
.planetary-calculator input,
.planetary-calculator select {
  font: inherit;
}

.planetary-calculator .pc-hero {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 32px;
}

.planetary-calculator .pc-eyebrow,
.planetary-calculator .pc-step {
  margin: 0 0 8px;
  color: var(--pc-ring);
  font-size: 0.72rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  line-height: 1.3;
  text-transform: uppercase;
}

.planetary-calculator h1,
.planetary-calculator h2,
.planetary-calculator p {
  margin-top: 0;
}

.planetary-calculator h1,
.planetary-calculator h2 {
  clear: none;
  color: var(--pc-ink);
  background: transparent;
  font-family: Georgia, "Times New Roman", serif;
  font-variant: normal;
  font-weight: 500;
  letter-spacing: -0.025em;
  text-shadow: none;
  text-transform: none;
}

.planetary-calculator h1 {
  max-width: 760px;
  margin-bottom: 14px;
  padding: 0;
  font-size: clamp(2.5rem, 6vw, 5.5rem);
  letter-spacing: -0.055em;
  line-height: 0.92;
}

.planetary-calculator h2 {
  margin-bottom: 0;
  padding: 0;
  font-size: clamp(1.55rem, 3vw, 2.25rem);
  line-height: 1.1;
}

.planetary-calculator .pc-intro {
  max-width: 700px;
  margin-bottom: 0;
  color: var(--pc-muted);
  font-family: inherit;
  font-size: 1.06rem;
  line-height: 1.65;
}

.planetary-calculator .pc-formula {
  display: flex;
  flex: 0 0 auto;
  align-items: center;
  gap: 12px;
  padding: 18px 22px;
  border: 1px solid var(--pc-line);
  border-radius: 18px;
  background: rgba(255, 253, 248, 0.7);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 1.35rem;
  box-shadow: var(--pc-shadow);
}

.planetary-calculator .pc-panel {
  border: 1px solid var(--pc-line);
  border-radius: 24px;
  background: rgba(255, 253, 248, 0.96);
  box-shadow: var(--pc-shadow);
}

.planetary-calculator .pc-controls,
.planetary-calculator .pc-configuration {
  margin-bottom: 24px;
  padding: 30px;
}

.planetary-calculator .pc-section-heading,
.planetary-calculator .pc-drawing-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 26px;
}

.planetary-calculator .pc-segmented {
  display: inline-flex;
  padding: 4px;
  border: 1px solid var(--pc-line);
  border-radius: 13px;
  background: #eeece5;
}

.planetary-calculator .pc-segmented input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.planetary-calculator .pc-segmented span {
  display: block;
  padding: 9px 14px;
  border-radius: 9px;
  color: var(--pc-muted);
  cursor: pointer;
  font-size: 0.88rem;
  font-weight: 700;
}

.planetary-calculator .pc-segmented input:checked + span {
  color: var(--pc-ink);
  background: var(--pc-panel);
  box-shadow: 0 2px 8px rgba(23, 33, 30, 0.1);
}

.planetary-calculator .pc-settings-row {
  display: grid;
  grid-template-columns: 190px 190px 1fr;
  align-items: end;
  gap: 18px;
  margin-bottom: 24px;
}

.planetary-calculator .pc-field {
  display: grid;
  gap: 8px;
}

.planetary-calculator .pc-field > span,
.planetary-calculator .pc-fixed-options legend {
  color: var(--pc-muted);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  line-height: 1.3;
  text-transform: uppercase;
}

.planetary-calculator .pc-field small {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: none;
}

.planetary-calculator input[type="number"],
.planetary-calculator select {
  width: 100%;
  min-height: 46px;
  padding: 10px 12px;
  border: 1px solid var(--pc-line);
  border-radius: 10px;
  outline: none;
  color: var(--pc-ink);
  background: #fffefa;
  transition: border-color 150ms, box-shadow 150ms;
}

.planetary-calculator input[type="number"]:focus,
.planetary-calculator select:focus {
  border-color: var(--pc-ring);
  box-shadow: 0 0 0 3px rgba(39, 121, 109, 0.13);
}

.planetary-calculator input[readonly] {
  color: #56625d;
  background: #efeee9;
}

.planetary-calculator .pc-field-help,
.planetary-calculator .pc-section-note {
  margin: 0 0 12px;
  color: var(--pc-muted);
  font-family: inherit;
  font-size: 0.88rem;
  line-height: 1.45;
}

.planetary-calculator .pc-gear-inputs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}

.planetary-calculator .pc-gear-card {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 16px;
  padding: 20px;
  border: 1px solid var(--pc-line);
  border-top-width: 4px;
  border-radius: 16px;
  background: #fffefa;
}

.planetary-calculator .pc-sun-card { border-top-color: var(--pc-sun); }
.planetary-calculator .pc-planet-card { border-top-color: var(--pc-planet); }
.planetary-calculator .pc-ring-card { border-top-color: var(--pc-ring); }

.planetary-calculator .pc-gear-title {
  display: flex;
  grid-column: 1 / -1;
  align-items: center;
  gap: 10px;
}

.planetary-calculator .pc-gear-title strong,
.planetary-calculator .pc-gear-title small {
  display: block;
}

.planetary-calculator .pc-gear-title small {
  margin-top: 2px;
  color: var(--pc-muted);
  font-size: 0.75rem;
}

.planetary-calculator .pc-gear-dot {
  width: 13px;
  height: 13px;
  border-radius: 50%;
  background: currentColor;
}

.planetary-calculator .pc-sun-card .pc-gear-dot { color: var(--pc-sun); }
.planetary-calculator .pc-planet-card .pc-gear-dot { color: var(--pc-planet); }
.planetary-calculator .pc-ring-card .pc-gear-dot { color: var(--pc-ring); }
.planetary-calculator .pc-diameter-field input { background: #efeee9; }
.planetary-calculator[data-mode="diameter"] .pc-diameter-field input { background: #fffefa; }
.planetary-calculator[data-mode="diameter"] .pc-teeth-field input { background: #efeee9; }

.planetary-calculator .pc-message {
  min-height: 20px;
  margin-top: 16px;
  color: var(--pc-muted);
  font-size: 0.86rem;
}

.planetary-calculator .pc-message.error {
  color: var(--pc-danger);
  font-weight: 700;
}

.planetary-calculator .pc-configuration-grid {
  display: grid;
  grid-template-columns: 180px 180px 1fr;
  align-items: end;
  gap: 18px;
}

.planetary-calculator .pc-fixed-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  min-width: 0;
  margin: 0;
  padding: 0;
  border: 0;
}

.planetary-calculator .pc-fixed-options legend { margin-bottom: 8px; }
.planetary-calculator .pc-fixed-options label { position: relative; }

.planetary-calculator .pc-fixed-options input {
  position: absolute;
  opacity: 0;
}

.planetary-calculator .pc-fixed-options span {
  display: block;
  padding: 12px 15px;
  border: 1px solid var(--pc-line);
  border-radius: 10px;
  color: var(--pc-muted);
  background: #fffefa;
  cursor: pointer;
  font-size: 0.86rem;
  font-weight: 700;
}

.planetary-calculator .pc-fixed-options input:checked + span {
  border-color: var(--pc-ring);
  color: var(--pc-ring);
  background: rgba(39, 121, 109, 0.08);
}

.planetary-calculator .pc-results-layout {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(0, 1.1fr);
  gap: 24px;
}

.planetary-calculator .pc-result-panel,
.planetary-calculator .pc-drawing-panel {
  padding: 30px;
}

.planetary-calculator .pc-ratio-display {
  margin: 28px 0 12px;
  padding: 24px 0;
  border-top: 1px solid var(--pc-line);
  border-bottom: 1px solid var(--pc-line);
}

.planetary-calculator .pc-ratio-display span {
  display: block;
  color: var(--pc-muted);
  font-size: 0.82rem;
  font-weight: 800;
  text-transform: uppercase;
}

.planetary-calculator .pc-ratio-display strong {
  display: block;
  margin-top: 6px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(3.2rem, 8vw, 6rem);
  font-weight: 500;
  letter-spacing: -0.06em;
  line-height: 0.95;
}

.planetary-calculator .pc-ratio-description {
  min-height: 48px;
  color: var(--pc-muted);
  line-height: 1.5;
}

.planetary-calculator .pc-result-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1px;
  overflow: hidden;
  margin: 24px 0;
  border: 1px solid var(--pc-line);
  border-radius: 12px;
  background: var(--pc-line);
}

.planetary-calculator .pc-result-grid div {
  padding: 14px;
  background: #fffefa;
}

.planetary-calculator .pc-result-grid span,
.planetary-calculator .pc-result-grid strong {
  display: block;
}

.planetary-calculator .pc-result-grid span {
  margin-bottom: 5px;
  color: var(--pc-muted);
  font-size: 0.72rem;
  text-transform: uppercase;
}

.planetary-calculator details {
  color: var(--pc-muted);
  font-size: 0.87rem;
  line-height: 1.5;
}

.planetary-calculator summary {
  color: var(--pc-ink);
  cursor: pointer;
  font-weight: 700;
}

.planetary-calculator details p { margin: 10px 0 0; }
.planetary-calculator .pc-nowrap { white-space: nowrap; }
.planetary-calculator .pc-drawing-heading { margin-bottom: 12px; }

.planetary-calculator button {
  padding: 10px 14px;
  border: 1px solid var(--pc-line);
  border-radius: 10px;
  color: var(--pc-ink);
  background: #fffefa;
  cursor: pointer;
  font-size: 0.82rem;
  font-weight: 800;
}

.planetary-calculator button:hover {
  border-color: var(--pc-ring);
  color: var(--pc-ring);
}

.planetary-calculator .pc-drawing-wrap {
  display: grid;
  min-height: 440px;
  place-items: center;
  overflow: hidden;
  border: 1px solid var(--pc-line);
  border-radius: 16px;
  background:
    linear-gradient(rgba(39, 121, 109, 0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(39, 121, 109, 0.035) 1px, transparent 1px),
    #faf9f4;
  background-size: 24px 24px;
}

.planetary-calculator #gear-drawing {
  width: min(100%, 520px);
  height: auto;
  overflow: visible;
}

.planetary-calculator .pc-drawing-note {
  margin: 12px 0 0;
  color: var(--pc-muted);
  font-size: 0.78rem;
  text-align: center;
}

@media (max-width: 900px) {
  .planetary-calculator .pc-hero {
    align-items: flex-start;
    flex-direction: column;
  }

  .planetary-calculator .pc-settings-row {
    grid-template-columns: 1fr 1fr;
  }

  .planetary-calculator .pc-field-help { grid-column: 1 / -1; }
  .planetary-calculator .pc-gear-inputs,
  .planetary-calculator .pc-results-layout { grid-template-columns: 1fr; }
  .planetary-calculator .pc-configuration-grid { grid-template-columns: 1fr 1fr; }
  .planetary-calculator .pc-fixed-options { grid-column: 1 / -1; }
}

@media (max-width: 580px) {
  .planetary-calculator { padding-top: 0.75em; }

  .planetary-calculator .pc-controls,
  .planetary-calculator .pc-configuration,
  .planetary-calculator .pc-result-panel,
  .planetary-calculator .pc-drawing-panel {
    padding: 20px;
    border-radius: 18px;
  }

  .planetary-calculator .pc-section-heading {
    align-items: flex-start;
    flex-direction: column;
  }

  .planetary-calculator .pc-settings-row,
  .planetary-calculator .pc-configuration-grid,
  .planetary-calculator .pc-gear-card {
    grid-template-columns: 1fr;
  }

  .planetary-calculator .pc-field-help,
  .planetary-calculator .pc-fixed-options,
  .planetary-calculator .pc-gear-title {
    grid-column: auto;
  }

  .planetary-calculator .pc-drawing-wrap { min-height: 320px; }
}