:root {
  color-scheme: light;
  --calc-ink: #172943;
  --calc-muted: #64748b;
  --calc-blue: #205eea;
  --calc-line: #e4eaf3;
  --calc-page: #f5f7fb;
}

* {
  box-sizing: border-box;
}

body {
  min-height: 100vh;
  margin: 0;
  padding: 0;
  background: var(--calc-page);
  color: var(--calc-ink);
  font-family: Inter, "Segoe UI", Arial, sans-serif;
}

.calculator-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 68px;
  padding: 12px max(5vw, 22px);
  border-bottom: 1px solid var(--calc-line);
  background: #fff;
}

.calculator-brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--calc-ink);
  font-size: 17px;
  font-weight: 750;
  text-decoration: none;
}

.calculator-brand img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.calculator-brand strong {
  color: var(--calc-blue);
}

.calculator-back {
  color: #4c5d75;
  font-size: 13px;
  font-weight: 650;
  text-decoration: none;
}

.calculator-back:hover {
  color: var(--calc-blue);
}

.calculator-page {
  width: min(1120px, calc(100% - 40px));
  margin: 0 auto;
  padding: 38px 0 56px;
}

.calculator-intro {
  margin-bottom: 23px;
}

.calculator-eyebrow {
  margin: 0 0 8px;
  color: var(--calc-blue);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .13em;
  text-transform: uppercase;
}

.calculator-intro h1 {
  margin: 0;
  color: var(--calc-ink);
  font-size: clamp(29px, 4vw, 38px);
  letter-spacing: -.04em;
}

.calculator-intro > p:last-child {
  margin: 10px 0 0;
  color: var(--calc-muted);
  font-size: 14px;
  line-height: 1.6;
}

.calculator-layout {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(280px, .8fr);
  align-items: start;
  gap: 20px;
}

.calculator-layout > * {
  min-width: 0;
}

.denomination-panel {
  min-width: 0;
}

#cashForm,
.records-panel {
  min-width: 0;
  padding: 22px;
  border: 1px solid var(--calc-line);
  border-radius: 15px;
  background: #fff;
  box-shadow: 0 12px 35px rgba(27, 47, 78, .05);
}

.panel-heading {
  margin: 0 0 5px;
  color: var(--calc-ink);
  font-size: 17px;
}

.panel-description {
  margin: 0 0 17px;
  color: var(--calc-muted);
  font-size: 12px;
  line-height: 1.55;
}

.denomination-scroll {
  max-width: 100%;
  min-width: 0;
  overflow-x: auto;
  border: 1px solid var(--calc-line);
  border-radius: 10px;
}

#cashForm table {
  width: 100%;
  min-width: 410px;
  margin: 0;
  border: 0;
  border-collapse: collapse;
}

#cashForm th,
#cashForm td {
  padding: 9px 11px;
  border: 0;
  border-bottom: 1px solid #edf0f5;
  font-size: 12px;
  text-align: left;
}

#cashForm th {
  background: #f7f9fd;
  color: #607087;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: .06em;
  text-transform: uppercase;
}

#cashForm tbody tr:last-child td {
  border-bottom: 0;
}

#cashForm td:first-child {
  color: var(--calc-ink);
  font-weight: 650;
  white-space: nowrap;
}

#cashForm td:last-child {
  color: #34445c;
  font-variant-numeric: tabular-nums;
  font-weight: 650;
}

#cashForm input[type="number"] {
  width: 92px;
  min-height: 34px;
  margin: 0;
  padding: 5px 8px;
  border: 1px solid #d6deea;
  border-radius: 7px;
  background: #fff;
  color: var(--calc-ink);
  font-size: 13px;
}

#cashForm input[type="number"]:focus {
  border-color: var(--calc-blue);
  outline: 3px solid rgba(32, 94, 234, .13);
}

#cashForm input#E-cash {
  width: 100%;
  min-height: 43px;
  margin: 0 0 16px;
  padding: 0 11px;
}

.totals-panel {
  position: sticky;
  top: 20px;
  padding: 21px;
  border: 1px solid #dce6f8;
  border-radius: 14px;
  background: linear-gradient(145deg, #f3f7ff, #fff 78%);
}

.totals-panel label {
  margin: 0 0 7px;
  color: #4c5d75;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .05em;
  text-transform: uppercase;
}

.totals-panel input {
  width: 100%;
  min-height: 43px;
  margin: 0 0 16px;
  padding: 0 11px;
  border: 1px solid #d6deea;
  border-radius: 8px;
  background: #fff;
  color: var(--calc-ink);
  font: inherit;
  font-size: 14px;
}

.totals-panel input:focus {
  border-color: var(--calc-blue);
  outline: 3px solid rgba(32, 94, 234, .13);
}

.totals-panel #FinalTotal {
  border-color: #b7cdfa;
  color: #174dc2;
  font-size: 21px;
  font-weight: 800;
}

.words-label {
  display: block;
  margin: 0 0 7px;
  color: #4c5d75;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: .05em;
  text-transform: uppercase;
}

#grandTotalWords {
  min-height: 67px;
  padding: 11px;
  border: 1px solid #e3eaf5;
  border-radius: 8px;
  background: rgba(255,255,255,.75);
  color: #455873;
  font-size: 12px;
  line-height: 1.6;
}

.record-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 16px;
}

.record-actions button,
.record-button {
  min-height: 39px;
  padding: 0 12px;
  border: 1px solid #d7e2f5;
  border-radius: 8px;
  background: #fff;
  color: var(--calc-blue);
  cursor: pointer;
  font: inherit;
  font-size: 12px;
  font-weight: 700;
}

.record-actions button:hover,
.record-button:hover {
  background: #edf3ff;
}

.records-panel {
  margin-top: 20px;
}

.records-panel h2 {
  margin: 0 0 13px;
  color: var(--calc-ink);
  font-size: 19px;
}

#recordsUl {
  display: grid;
  gap: 10px;
  margin: 0 0 16px;
  padding: 0;
  list-style: none;
}

#recordsUl li {
  padding: 13px;
  border: 1px solid var(--calc-line);
  border-radius: 9px;
  background: #fbfcfe;
  color: #34445c;
  font-size: 13px;
  line-height: 1.6;
}

.saved-record-title {
  display: block;
  color: var(--calc-ink);
  font-weight: 750;
}

.saved-record-actions {
  display: flex;
  gap: 7px;
  margin-top: 8px;
}

@media (max-width: 760px) {
  .calculator-header {
    min-height: 62px;
    padding: 10px 16px;
  }

  .calculator-brand {
    font-size: 15px;
  }

  .calculator-brand img {
    width: 32px;
    height: 32px;
  }

  .calculator-page {
    width: min(100% - 28px, 560px);
    padding-top: 28px;
  }

  .calculator-layout {
    grid-template-columns: 1fr;
  }

  .totals-panel {
    position: static;
  }
}

@media (max-width: 440px) {
  #cashForm,
  .records-panel {
    padding: 16px 13px;
  }

  .totals-panel {
    padding: 17px;
  }

  .record-actions {
    flex-direction: column;
  }
}