:root {
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  color-scheme: light;
  color: #171717;
  background: #fff;
}

* { box-sizing: border-box; }
body { margin: 0; line-height: 1.5; }
a { color: #0645ad; }
a:hover { color: #002d72; }
button, input, a { min-height: 2.75rem; }
:focus-visible { outline: 3px solid #b23a00; outline-offset: 3px; }
.content-shell { width: min(72rem, calc(100% - 2rem)); margin-inline: auto; }
.page-content { padding-block: 2.5rem; }
.lead { max-width: 46rem; font-size: 1.2rem; }
.site-header, .site-footer { border-block: 1px solid #d6d6d6; }
.site-header__inner, .site-footer__inner { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding-block: .75rem; }
.site-header nav, .site-footer nav { display: flex; flex-wrap: wrap; gap: .5rem 1rem; }
.site-brand { font-weight: 700; }
.session-strip { display: flex; flex-wrap: wrap; align-items: center; gap: .75rem; width: min(72rem, calc(100% - 2rem)); margin: 1rem auto 0; padding: .75rem; border: 1px solid #b9b9b9; background: #f6f6f6; }
.session-strip label, .meter-control { display: inline-flex; align-items: center; gap: .35rem; }
.session-strip input { width: 6.5rem; padding: .4rem; }
.meter-control input { width: 3.5rem; }
.session-strip button { padding-inline: .75rem; }
.tool-card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr)); gap: 1rem; margin-block: 2rem; }
.tool-card, .tool-section { padding: 1rem; border: 1px solid #c6c6c6; border-radius: .25rem; }
.numeric-input { display: flex; align-items: center; gap: .5rem; }
.numeric-input input { min-width: 0; padding: .5rem; }
.tempo-calculator { display: grid; gap: 1rem; }
.tempo-calculator__input { max-width: 24rem; }
.tempo-calculator__input input { flex: 1; }
.tempo-output-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr)); gap: 1rem; }
.tempo-calculator__reverse { display: grid; gap: 1rem; padding-top: 1rem; border-top: 1px solid #c6c6c6; }
.tempo-calculator__reverse-inputs { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr)); gap: 1rem; }
.tempo-calculator__reverse-inputs .numeric-input { flex-wrap: wrap; }
.tempo-calculator__reverse-inputs input { flex: 1; }
.bpm-ms-calculator { display: grid; gap: 1rem; }
.bpm-ms-calculator__input { max-width: 24rem; }
.bpm-ms-calculator__input input { flex: 1; }
.copy-status { min-height: 1.5rem; margin: 0; }
.subdivision-output { display: grid; gap: 1rem; }
.timing-row { display: grid; gap: .75rem; padding: 1rem; border: 1px solid #c6c6c6; }
.timing-row > h2 { margin: 0; }
.timing-row > section { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: .5rem 1rem; align-items: center; }
.timing-row h3, .timing-row output { margin: 0; }
.timing-row output { font-size: 1.2rem; font-weight: 700; }
.timing-row details { grid-column: 1 / -1; }
.timing-row details p { margin-bottom: 0; }
.bpm-ms-calculator__reverse { display: grid; gap: 1rem; padding-top: 1rem; border-top: 1px solid #c6c6c6; }
.bpm-ms-calculator__reverse-inputs { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr)); gap: 1rem; }
.bpm-ms-calculator__reverse-inputs label { display: grid; gap: .35rem; }
.bpm-ms-calculator__reverse-inputs input, .bpm-ms-calculator__reverse-inputs select { min-width: 0; padding: .5rem; }
.samples-ms-calculator { display: grid; gap: 1.5rem; }
.samples-ms-calculator > section { display: grid; gap: 1rem; }
.samples-ms-calculator__input { max-width: 24rem; }
.samples-ms-calculator__input input { flex: 1; }
.samples-ms-calculator__results { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(100%, 16rem), 1fr)); gap: 1rem; }
.samples-ms-calculator .result-value { display: grid; justify-items: start; }
.samples-ms-calculator__context { margin: 0; padding: .75rem; border-inline-start: .25rem solid #333; background: #f6f6f6; }
.field-error { min-height: 1.5rem; color: #a01616; }
.result-value { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; padding: 1rem; border: 1px solid #c6c6c6; }
.result-value__primary { font-size: 1.5rem; font-weight: 700; }
.result-value__secondary { width: 100%; }
.formula-block { padding: 1rem; border-inline-start: .25rem solid #333; background: #f6f6f6; }
.related-tool-links ul { padding-left: 1.25rem; }
.prose { max-width: 72rem; }
@media (max-width: 42rem) {
  .site-header__inner, .site-footer__inner { align-items: flex-start; flex-direction: column; }
  .site-header nav, .site-footer nav { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); width: 100%; gap: .5rem; }
  .session-strip > * { flex-grow: 1; }
  .numeric-input { align-items: stretch; flex-direction: column; }
  .numeric-input input { width: 100%; }
  .timing-row > section { grid-template-columns: 1fr; }
}