.mix-calculator,
.battery-browser {
  --tool-ink: #303030;
  --tool-cyan: #50d9e8;
  --tool-pink: #f279b9;
  margin-block: 2rem;
}

.tool-warning {
  border: 1px solid #f1a900;
  border-left-width: 6px;
  border-radius: 1rem;
  background: #fff9e8;
  color: #322b1c;
  padding: 1.15rem 1.25rem;
}
.tool-warning strong { display: block; font-size: var(--type-body, 1rem); }
.tool-warning p { margin: .35rem 0 0; font-size: var(--type-body-small, .9rem); line-height: 1.65; }

.calculator-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
  margin-top: 1.5rem;
}
.calculator-panel {
  border: 1px solid #d9d9d9;
  border-radius: 1.25rem;
  background: #fff;
  padding: clamp(1.15rem, 2.5vw, 1.75rem);
  box-shadow: 0 20px 50px rgba(35, 35, 35, .06);
}
.calculator-panel__heading { display: flex; align-items: center; gap: .8rem; margin-bottom: 1.2rem; }
.calculator-panel__heading > span { display: grid; width: 2.5rem; height: 2.5rem; place-items: center; border-radius: 50%; background: var(--tool-cyan); color: #182427; font-size: var(--type-label, .72rem); font-weight: 900; }
.calculator-panel__heading p { margin: 0 0 .15rem; color: #888; font-size: var(--type-meta, .6875rem); font-weight: 800; letter-spacing: .1em; text-transform: uppercase; }
.calculator-panel__heading h2 { margin: 0; font-size: var(--type-card-title, 1.5rem); line-height: 1.1; }
.field-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .85rem; }
.field-grid label,
.battery-controls label { display: grid; gap: .38rem; color: #555; font-size: var(--type-ui, .875rem); font-weight: 800; }
.field-grid input,
.field-grid select,
.battery-controls input,
.battery-controls select {
  width: 100%;
  min-height: 46px;
  border: 1px solid #cfcfcf;
  border-radius: .72rem;
  background: #fff;
  color: #262626;
  font: inherit;
  font-size: var(--type-body, 1rem);
  padding: .65rem .75rem;
}
.field-grid input:focus,
.field-grid select:focus,
.battery-controls input:focus,
.battery-controls select:focus { outline: 3px solid rgba(80, 217, 232, .28); border-color: #35b9c7; }
.calculator-panel > .button { margin-top: 1rem; }
.calculator-output { display: block; min-height: 92px; margin-top: 1rem; border-radius: .9rem; background: #f2f3f3; padding: 1rem; }
.calculator-output:empty::before { content: 'Результат появится здесь'; color: #777; }
.calculator-output--error { border: 1px solid #d75b5b; background: #fff0f0; color: #7e2929; }
.calculator-output--error strong { display: block; }
.calculator-output--error p { margin: .3rem 0 0; }
.result-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .65rem; }
.result-grid span { display: grid; gap: .12rem; }
.result-grid small { color: #777; font-size: .69rem; font-weight: 800; letter-spacing: .05em; text-transform: uppercase; }
.result-grid strong { color: #252525; font-size: 1.05rem; }
.calculator-output > p { margin: .8rem 0 0; color: #6b6b6b; font-size: var(--type-ui, .875rem); line-height: 1.5; }
.tool-source { color: #707070; font-size: var(--type-body-small, .9rem); line-height: 1.65; }

.battery-controls { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: .8rem; margin: 1.4rem 0; }
.battery-table-wrap { max-width: 100%; overflow-x: auto; border: 1px solid #ddd; border-radius: 1rem; background: #fff; }
.battery-table { width: 100%; min-width: 920px; border-collapse: collapse; font-size: var(--type-ui, .875rem); }
.battery-table th { background: #303030; color: #fff; padding: .85rem .75rem; text-align: left; white-space: nowrap; }
.battery-table th button { border: 0; background: transparent; color: inherit; cursor: pointer; font: inherit; font-weight: 800; padding: 0; }
.battery-table th button::after { content: ' ↕'; color: #70dbe6; }
.battery-table td { border-top: 1px solid #e7e7e7; color: #454545; padding: .85rem .75rem; vertical-align: top; }
.battery-table tbody tr:hover { background: #f7fafa; }
.battery-table td strong { display: block; color: #222; }
.battery-table td small { display: block; margin-top: .15rem; color: #888; }
.battery-table .battery-source-meta { margin-top: .35rem; font-weight: 700; }
.battery-table .battery-note { max-width: 28rem; margin-top: .35rem; color: #666; line-height: 1.45; }
.battery-table a { font-weight: 800; text-decoration: underline; text-decoration-color: #50d9e8; text-underline-offset: 3px; }
.battery-status { display: inline-flex; border-radius: 999px; background: #eee; padding: .3rem .55rem; font-size: .7rem; font-weight: 800; white-space: nowrap; }
.battery-status--current { background: #dff8ed; color: #176444; }
.battery-status--stale { background: #fff1c9; color: #755806; }
.battery-status--withdrawn { background: #ffe1e1; color: #8b2e2e; }
.battery-empty { border: 1px dashed #aaa; border-radius: 1rem; padding: 1rem; text-align: center; }

@media (max-width: 820px) {
  .calculator-grid { grid-template-columns: 1fr; }
  .battery-controls { grid-template-columns: 1fr 1fr; }
  .battery-controls label:first-child { grid-column: 1 / -1; }
}

@media (max-width: 600px) {
  .field-grid,
  .result-grid,
  .battery-controls { grid-template-columns: 1fr; }
  .battery-controls label:first-child { grid-column: auto; }
  .calculator-panel { padding: 1rem; }
  .calculator-panel .button { width: 100%; }
  .battery-table-wrap { overflow: visible; border: 0; background: transparent; }
  .battery-table { min-width: 0; border-collapse: separate; border-spacing: 0 .8rem; }
  .battery-table thead { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }
  .battery-table tbody,
  .battery-table tr,
  .battery-table td { display: block; width: 100%; }
  .battery-table tr { overflow: hidden; border: 1px solid #ddd; border-radius: 1rem; background: #fff; }
  .battery-table td { display: grid; grid-template-columns: minmax(7rem, .75fr) 1fr; gap: .7rem; border-top: 1px solid #eee; padding: .7rem .85rem; }
  .battery-table td:first-child { border-top: 0; background: #303030; color: #fff; }
  .battery-table td:first-child strong { color: #fff; }
  .battery-table td::before { content: attr(data-label); color: #777; font-size: .7rem; font-weight: 800; letter-spacing: .04em; text-transform: uppercase; }
  .battery-table td:first-child::before { color: #7bdde7; }
}