/* Calculator redesign: scoped so existing public pages remain unchanged. */
.page-calculator .calculator-section {
  padding: 46px 0 58px;
  background: linear-gradient(180deg, #fff, #f4f6f8);
}
.page-calculator .calculator-container {
  display: block;
  width: min(1240px, calc(100% - 48px));
  padding: 0;
  overflow: visible;
}
.page-calculator .section-heading {
  width: 100%;
  max-width: none;
  margin: 0 auto 28px;
  text-align: center;
}
.page-calculator .section-heading h1,
.page-calculator .section-heading h2 {
  margin: 8px 0 10px;
  font-size: clamp(26px, 2.5vw, 32px);
  font-weight: 650;
  letter-spacing: -.035em;
  line-height: 1.25;
}
.page-calculator .section-heading .small {
  max-width: 900px;
  margin: auto;
  font-size: 14px;
}
.page-calculator .calculator-shell,
.page-calculator .calculator-card {
  width: 100%;
  max-width: none;
  margin: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  overflow: visible;
}
.page-calculator .calculator-card-top {
  margin: 0 0 18px;
  padding: 0;
  border: 0;
  background: transparent;
}
.page-calculator .calculator-tabs {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  overflow: hidden;
  border: 1px solid var(--mega-line);
  border-radius: 6px;
  background: #edf0f3;
}
.page-calculator .calculator-tabs button {
  min-height: 56px;
  padding: 12px 16px;
  border: 0;
  border-bottom: 3px solid transparent;
  border-radius: 0;
  background: transparent;
  color: var(--mega-navy);
  box-shadow: none;
  transform: none;
  font-size: 14px;
  font-weight: 600;
  text-transform: none;
}
.page-calculator .calculator-tabs button + button { border-left: 1px solid var(--mega-line); }
.page-calculator .calculator-tabs button:hover { background: #f8f9fa; }
.page-calculator .calculator-tabs button.active {
  color: var(--mega-navy);
  background: #fff;
  border-bottom-color: var(--mega-red);
}
.page-calculator .calculator-tabs button strong { font-size: inherit; font-weight: 600; }
.page-calculator .calculator-tabs button span {
  width: 24px;
  height: 24px;
  color: var(--mega-steel);
  background: transparent;
  border: 0;
  border-radius: 0;
  font-size: 22px;
  line-height: 1;
}
.page-calculator .calculator-tabs button.active span { color: var(--mega-red); }
.page-calculator .calculator-select-wrap { display: none; }
.page-calculator .calc-panel {
  width: 100%;
  max-width: none;
  padding: 24px;
  border: 1px solid var(--mega-line);
  border-radius: 8px;
  background: #fff;
  box-shadow: 0 8px 24px rgba(17, 30, 41, .04);
  overflow: visible;
}
.page-calculator .calc-panel-heading { margin-bottom: 24px; }
.page-calculator .calc-panel-heading h3 {
  margin: 0 0 6px;
  padding: 0;
  color: var(--mega-navy);
  font-size: clamp(21px, 1.9vw, 25px);
  font-weight: 600;
  line-height: 1.25;
  letter-spacing: -.025em;
}
.page-calculator .calc-panel-heading .small { font-size: 13px; }
.page-calculator .calc-workspace,
.page-calculator .thread-workspace,
.page-calculator #calc-weight .calc-workspace {
  display: grid;
  grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr);
  align-items: stretch;
  gap: 28px;
  margin: 0;
  width: 100%;
  min-width: 0;
  max-width: none;
}
.page-calculator .calc-input-panel,
.page-calculator .thread-input-panel,
.page-calculator #calc-weight .calc-input-panel {
  display: block;
  width: 100%;
  min-width: 0;
  padding: 4px;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
  text-align: left;
}
.page-calculator .thread-input-grid,
.page-calculator #calc-weight .form-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
  gap: 18px 20px;
  width: 100%;
  max-width: none;
  margin: 0;
}
.page-calculator .field { min-width: 0; gap: 7px; }
.page-calculator .field label,
.page-calculator #calc-weight .field label,
.page-calculator #calc-weight .weight-top-tabs > span {
  display: block;
  width: auto;
  min-height: 0;
  margin: 0 0 7px;
  color: var(--mega-navy);
  background: transparent;
  font-size: 12px;
  line-height: 1.5;
  font-weight: 600;
  letter-spacing: 0;
  text-align: left;
  text-transform: none;
}
.page-calculator input:not([type="hidden"]),
.page-calculator select,
.page-calculator #calc-weight input:not([type="hidden"]),
.page-calculator #calc-weight select {
  display: block;
  width: 100%;
  max-width: none;
  min-width: 0;
  min-height: 44px;
  height: 44px;
  margin: 0;
  padding: 10px 12px;
  border: 1px solid #cfd7df;
  border-radius: 4px;
  color: var(--mega-navy);
  background: #fff;
  box-shadow: none;
  font-size: 14px;
  font-weight: 400;
  text-align: left;
  text-align-last: auto;
  appearance: auto;
}
.page-calculator input::placeholder { color: #77838e; }
.page-calculator .calc-input-control { display: flex; align-items: stretch; min-width: 0; }
.page-calculator .calc-input-control input,
.page-calculator #calc-weight .calc-input-control input {
  flex: 1 1 0;
  width: 0;
  border-radius: 4px 0 0 4px;
}
.page-calculator .calc-input-unit {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 auto;
  min-width: 55px;
  padding: 0 10px;
  border: 1px solid #cfd7df;
  border-left: 0;
  border-radius: 0 4px 4px 0;
  color: #566776;
  background: #f5f7f9;
  font-size: 12px;
  white-space: nowrap;
}
.page-calculator .calc-button,
.page-calculator #calc-weight .calc-button {
  display: inline-flex;
  width: auto;
  min-width: 170px;
  max-width: 100%;
  min-height: 44px;
  margin: 24px 0 0;
  padding: 11px 24px;
  border-radius: 4px;
  color: #fff;
  background: var(--mega-navy);
  box-shadow: 0 5px 14px rgba(17, 30, 41, .10);
  font-size: 13px;
  font-weight: 600;
  transform: none;
}
.page-calculator .calc-button:hover { background: #2a3e4d; box-shadow: none; }
.page-calculator .calc-result-panel,
.page-calculator .thread-result-panel {
  min-width: 0;
  width: 100%;
  padding: 25px;
  border: 1px solid #1d303e;
  border-radius: 6px;
  background: linear-gradient(135deg, #192c3a, #101e28);
  color: #fff;
  box-shadow: none;
}
.page-calculator .calc-subtitle {
  margin: 0 0 20px;
  padding: 0 0 13px;
  border: 0;
  color: #fff;
  font-size: 20px;
  font-weight: 600;
  line-height: 1.3;
  letter-spacing: -.015em;
  text-transform: none;
}
.page-calculator .calc-subtitle::after {
  content: "";
  display: block;
  width: 36px;
  height: 3px;
  margin-top: 14px;
  background: #e22336;
}
.page-calculator .calc-results { grid-template-columns: minmax(0, 1fr); gap: 0; margin: 0; }
.page-calculator .calc-results > div {
  min-height: 0;
  padding: 0 0 20px;
  border: 0;
  border-radius: 0;
  color: #fff;
  background: transparent;
  box-shadow: none;
}
.page-calculator .calc-results > div + div { padding-top: 20px; border-top: 1px solid #3a4b58; }
.page-calculator .calc-results span,
.page-calculator .calc-results small {
  color: #d7e1e8;
  font-size: 12px;
  line-height: 1.5;
  font-weight: 400;
  text-transform: none;
}
.page-calculator .calc-results strong,
.page-calculator .weight-summary-panel .calc-results div + div strong {
  margin: 8px 0 3px;
  color: #fff;
  font-size: 32px;
  font-weight: 600;
  line-height: 1.2;
  white-space: normal;
  overflow-wrap: anywhere;
}
.page-calculator .thread-results > div {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto 28px;
  align-items: center;
  gap: 14px;
  padding: 14px 0;
}
.page-calculator .thread-results > div + div { padding-top: 14px; }
.page-calculator .thread-results strong { margin: 0; font-size: 20px; }
.page-calculator .thread-results small { text-align: right; }
.page-calculator .thread-help,
.page-calculator .thread-note,
.page-calculator .material-summary,
.page-calculator .calc-result-hint,
.page-calculator .calc-helper,
.page-calculator .calc-input-hint {
  margin: 16px 0 0;
  color: var(--mega-muted);
  font-size: 12px;
  line-height: 1.65;
  font-weight: 400;
}
.page-calculator .calc-result-panel .thread-note,
.page-calculator #calc-weight .thread-note,
.page-calculator .thread-result-panel .thread-note,
.page-calculator .calc-result-panel .material-summary,
.page-calculator .calc-result-panel .calc-result-hint {
  display: block;
  color: #bdcbd6;
}
.page-calculator .material-summary { padding-top: 16px; border-color: #3a4b58; }
.page-calculator .material-summary strong { color: #fff; font-weight: 500; }
.page-calculator .thread-type-tabs,
.page-calculator .whitworth-series-tabs,
.page-calculator .shape-tabs {
  display: flex;
  gap: 8px;
  margin: 0 0 20px;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  flex-wrap: wrap;
}
.page-calculator .thread-type-tabs button,
.page-calculator .whitworth-series-tabs button,
.page-calculator .shape-tabs button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 1 1 0;
  gap: 6px;
  min-height: 42px;
  margin: 0;
  padding: 8px 12px;
  border: 1px solid var(--mega-line);
  border-radius: 4px;
  color: var(--mega-navy);
  background: #f7f8fa;
  box-shadow: none;
  font-size: 12px;
  font-weight: 500;
  line-height: 1.5;
  text-transform: none;
  transform: none;
}
.page-calculator .thread-type-tabs button.active,
.page-calculator .whitworth-series-tabs button.active { background: var(--mega-navy); border-color: var(--mega-navy); color: #fff; }
.page-calculator .shape-tabs button.active { background: #e9eef2; border-color: #607789; color: var(--mega-navy); }
.page-calculator .thread-type-tabs button:hover,
.page-calculator .whitworth-series-tabs button:hover,
.page-calculator .shape-tabs button:hover { border-color: var(--mega-red); transform: none; }
.page-calculator .whitworth-series-tabs.is-hidden,
.page-calculator .thread-standard-list.is-hidden,
.page-calculator .weight-dim.is-hidden { display: none; }
.page-calculator .thread-standard-list { padding: 14px; border-radius: 4px; margin: 0 0 20px; }
.page-calculator .shape-tabs { margin-bottom: 0; }
.page-calculator .calc-shape-symbol {
  display: inline-block;
  position: relative;
  flex: 0 0 18px;
  width: 18px;
  height: 18px;
  border: 1.4px solid currentColor;
}
.page-calculator .calc-shape-symbol-round,
.page-calculator .calc-shape-symbol-pipe { border-radius: 50%; }
.page-calculator .calc-shape-symbol-pipe::after { content: ""; position: absolute; inset: 3px; border: 1px solid currentColor; border-radius: 50%; }
.page-calculator .calc-shape-symbol-flat { height: 12px; }
.page-calculator .calc-shape-symbol-hex { clip-path: polygon(25% 0, 75% 0, 100% 50%, 75% 100%, 25% 100%, 0 50%); background: currentColor; }
.page-calculator .calc-shape-symbol-hex::after { content: ""; position: absolute; inset: 1px; background: #f7f8fa; clip-path: polygon(25% 0, 75% 0, 100% 50%, 75% 100%, 25% 100%, 0 50%); }
.page-calculator #calc-weight .shape-select { display: none; }
.page-calculator #calc-weight .calc-feature-field {
  grid-column: 1 / -1;
  display: block;
  padding: 0;
  border: 0;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}
.page-calculator .weight-history {
  padding: 18px;
  border-radius: 5px;
  background: #f7f9fa;
}
.page-calculator .weight-history-head h4 { font-size: 13px; font-weight: 600; }
.page-calculator .weight-history-head button { font-weight: 500; }
.page-calculator .weight-history li { padding: 10px; border-radius: 3px; background: #fff; }
.page-calculator .weight-history li strong { color: var(--mega-navy); font-size: 12px; font-weight: 500; }
.page-calculator .weight-history li span { color: var(--mega-muted); }
.page-calculator .weight-history-empty { color: var(--mega-muted); }

@media (max-width: 900px) {
  .page-calculator .calculator-container { width: calc(100% - 32px); }
  .page-calculator .calc-workspace,
  .page-calculator .thread-workspace,
  .page-calculator #calc-weight .calc-workspace { grid-template-columns: minmax(0, 1fr); gap: 22px; }
  .page-calculator .calc-results.side-results { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 24px; }
  .page-calculator .side-results > div + div { padding: 0 0 20px 24px; border-top: 0; border-left: 1px solid #3a4b58; }
}
@media (max-width: 620px) {
  .page-calculator .calculator-section { padding: 28px 0 36px; }
  .page-calculator .calculator-container { width: calc(100% - 24px); }
  .page-calculator .section-heading { margin-bottom: 22px; text-align: left; }
  .page-calculator .section-heading h1,
  .page-calculator .section-heading h2 { font-size: 26px; }
  .page-calculator .section-heading .small { font-size: 13px; }
  .page-calculator .calculator-tabs { display: none; }
  .page-calculator .calculator-select-wrap { display: block; padding: 0; border: 0; border-radius: 0; background: none; }
  .page-calculator .calculator-select-wrap label { display: block; min-height: 0; margin: 0 0 8px; background: none; color: var(--mega-muted); font-size: 12px; font-weight: 500; text-align: left; letter-spacing: 0; text-transform: none; }
  .page-calculator .calculator-select-wrap select { font-weight: 500; }
  .page-calculator .calc-panel { padding: 17px; }
  .page-calculator .calc-panel-heading { margin-bottom: 20px; }
  .page-calculator .calc-panel-heading h3 { font-size: 21px; }
  .page-calculator .thread-input-grid,
  .page-calculator #calc-weight .form-grid { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .page-calculator #calc-weight .form-grid > *,
  .page-calculator #calc-weight .field,
  .page-calculator #calc-weight .weight-top-tabs,
  .page-calculator #calc-weight .calc-feature-field {
    width: 100% !important;
    max-width: none !important;
    margin-right: 0 !important;
    margin-left: 0 !important;
  }
  .page-calculator .calc-input-panel,
  .page-calculator .thread-input-panel,
  .page-calculator #calc-weight .calc-input-panel { padding: 0; }
  .page-calculator input:not([type="hidden"]),
  .page-calculator select,
  .page-calculator #calc-weight input:not([type="hidden"]),
  .page-calculator #calc-weight select { font-size: 16px; }
  .page-calculator .calc-result-panel,
  .page-calculator .thread-result-panel { padding: 20px; }
  .page-calculator .calc-subtitle { font-size: 19px; }
  .page-calculator .calc-results strong { font-size: 28px; }
  .page-calculator .thread-results strong { font-size: 18px; }
  .page-calculator .thread-results > div { gap: 8px; }
  .page-calculator .thread-type-tabs { flex-wrap: nowrap; gap: 5px; }
  .page-calculator .thread-type-tabs button { padding: 8px 6px; font-size: 12px; }
  .page-calculator #calc-weight .shape-tabs { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 8px; }
  .page-calculator #calc-weight .shape-tabs button { width: 100%; min-height: 44px; margin: 0; }
  .page-calculator .calc-button,
  .page-calculator #calc-weight .calc-button { width: 100%; }
}
@media (max-width: 380px) {
  .page-calculator .calc-results.side-results { grid-template-columns: minmax(0, 1fr); gap: 0; }
  .page-calculator .side-results > div + div { padding: 18px 0 0; border-left: 0; border-top: 1px solid #3a4b58; }
}