:root {
  color-scheme: light;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  color: #172033;
  background: #f4f7fb;
  --blue: #1457a6;
  --navy: #213e63;
  --line: #d9e1ec;
  --muted: #617085;
}

* {
  box-sizing: border-box;
}
body {
  margin: 0;
}
button,
input,
select {
  font: inherit;
}

.app-header {
  color: #fff;
  background: #102c50;
  padding: 26px max(22px, calc((100% - 1380px) / 2));
}
.app-header__inner {
  max-width: 1380px;
}
.app-header .eyebrow {
  margin: 0 0 8px;
  color: #b9c9df;
  font-size: 11px;
  font-weight: 750;
  letter-spacing: 0.12em;
}
.app-header h1 {
  margin: 0 0 8px;
  font-size: 26px;
}
.app-header p:last-child {
  margin: 0;
  max-width: 900px;
  color: #d4dfed;
  line-height: 1.5;
}
.workspace {
  max-width: 1440px;
  margin: 24px auto;
  padding: 0 18px;
}
.calculator-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}
.card {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: #fff;
  box-shadow: 0 3px 16px #122c5010;
}
.card h2 {
  margin: 0 0 17px;
  font-size: 18px;
}
.tabs {
  display: flex;
  gap: 6px;
  margin: -3px 0 14px;
  overflow-x: auto;
  border-bottom: 1px solid var(--line);
}
.tab {
  padding: 10px 12px;
  border: 0;
  border-bottom: 2px solid transparent;
  background: transparent;
  color: #506178;
  cursor: pointer;
  white-space: nowrap;
}
.tab.active {
  border-color: var(--blue);
  color: var(--blue);
  font-weight: 700;
}
.pane {
  display: none;
}
.pane.active {
  display: block;
}
.input-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}
.field {
  display: flex;
  min-width: 0;
  flex-direction: column;
  gap: 5px;
}
.field.wide {
  grid-column: 1 / -1;
}
.field label {
  color: #526177;
  font-size: 12px;
  font-weight: 650;
}
input,
select {
  width: 100%;
  min-height: 38px;
  padding: 9px 10px;
  border: 1px solid #c8d2e0;
  border-radius: 7px;
  background: #fff;
  color: #172033;
}
input:focus,
select:focus {
  outline: 2px solid #a9c9ef;
  border-color: var(--blue);
}
.unit {
  color: #7a8798;
  font-size: 11px;
  line-height: 1.4;
}
.section-summary,
.hint {
  color: var(--muted);
  font-size: 12px;
  line-height: 1.55;
}
.section-summary {
  margin: 12px 0 0;
}
.actions {
  display: flex;
  gap: 10px;
  margin-top: 18px;
}
.primary,
.secondary {
  padding: 11px 15px;
  border: 0;
  border-radius: 7px;
  font-weight: 700;
  cursor: pointer;
}
.primary {
  flex: 1;
  background: var(--blue);
  color: #fff;
}
.secondary {
  background: #eaf0f7;
  color: #2f4562;
}
.error {
  display: none;
  margin-bottom: 12px;
  padding: 12px;
  border-radius: 8px;
  background: #fff0ed;
  color: #8f2617;
  white-space: pre-wrap;
}
.safety-note {
  color: #718096;
  font-size: 11px;
  line-height: 1.55;
}

/* Report preview and print-to-PDF layout */
.report-document {
  max-width: 1050px;
  margin: 0 auto;
  color: #1d2939;
  font-family: Inter, "Segoe UI", Arial, sans-serif;
  font-size: 12px;
  line-height: 1.38;
}
.report-cover {
  padding: 23px 26px 21px;
  border-bottom: 4px solid #5379aa;
  border-radius: 3px 3px 0 0;
  background: var(--navy);
  color: #fff;
}
.report-cover .eyebrow {
  margin: 0 0 7px;
  color: #b9c9df;
  font-size: 10px;
  font-weight: 750;
  letter-spacing: 0.11em;
}
.report-cover h1 {
  margin: 0 0 5px;
  font-size: 28px;
  line-height: 1.15;
}
.report-subtitle {
  margin: 0;
  color: #e2e9f2;
  font-size: 13px;
}
.report-meta {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 5px;
  margin: 12px 0 14px;
}
.report-meta > div {
  min-height: 56px;
  padding: 9px 12px;
  background: #edf2f8;
}
.report-meta span {
  display: block;
  margin-bottom: 4px;
  color: #657892;
  font-size: 9px;
  font-weight: 750;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.report-meta strong {
  display: block;
  overflow-wrap: anywhere;
  color: #243247;
  font-size: 12px;
}
.governing-card {
  display: grid;
  grid-template-columns: minmax(145px, 200px) minmax(0, 1fr);
  gap: 18px;
  align-items: center;
  margin: 0 0 22px;
  padding: 16px 18px;
  border-left: 6px solid #2a9a5b;
  background: #eaf6ee;
  color: #1e7141;
}
.governing-card.fail {
  border-color: #d74d3e;
  background: #fff0ed;
  color: #a42f1a;
}
.governing-number span {
  display: block;
  color: #657892;
  font-size: 9px;
  font-weight: 750;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.governing-number strong {
  display: block;
  margin-top: 1px;
  font-size: 36px;
  line-height: 1.1;
}
.governing-detail > strong {
  font-size: 17px;
}
.governing-detail p {
  margin: 2px 0 8px;
  color: #657892;
  font-size: 10px;
}
.ratio-track {
  position: relative;
  height: 11px;
  overflow: visible;
  background: #dfe6ee;
}
.ratio-track span {
  display: block;
  height: 100%;
  background: #e0a500;
}
.ratio-track i {
  position: absolute;
  top: -3px;
  bottom: -3px;
  left: 100%;
  width: 2px;
  background: #233d62;
}
.governing-card.fail .ratio-track span {
  background: #d74d3e;
}
.report-major {
  margin-top: 20px;
}
.report-major > h2 {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 14px;
  color: var(--navy);
  font-size: 21px;
}
.report-major > h2 span {
  display: inline-grid;
  width: 32px;
  height: 32px;
  place-items: center;
  background: var(--navy);
  color: #fff;
  font-size: 17px;
}
.report-subsection {
  margin: 15px 0 18px;
  break-inside: avoid-page;
  page-break-inside: avoid;
}
.report-subsection h3 {
  margin: 0;
  padding: 0 0 5px;
  border-bottom: 1px solid #c9d5e4;
  color: #243e64;
  font-size: 15px;
}
.report-table {
  width: 100%;
  margin: 7px 0 0;
  border-collapse: collapse;
  font-size: 10.5px;
}
.report-table thead {
  display: table-header-group;
}
.report-table th {
  padding: 6px 7px;
  border-bottom: 1px solid #253e62;
  color: #667791;
  font-size: 9px;
  font-weight: 750;
  letter-spacing: 0.035em;
  text-align: left;
  text-transform: uppercase;
}
.report-table td {
  padding: 5px 7px;
  border-bottom: 1px solid #d8e0eb;
  vertical-align: top;
}
.report-table tbody tr:nth-child(even) {
  background: #f0f4f9;
}
.report-table .symbol {
  width: 22%;
  white-space: nowrap;
}
.report-table .value {
  width: 36%;
  font-weight: 650;
}
.report-table .reference {
  width: 19%;
  color: #75839a;
  font-size: 9.5px;
  font-style: italic;
  text-align: right;
}
.ratio-value {
  font-weight: 750;
  white-space: nowrap;
}
.ratio-value.good {
  color: #21804a;
}
.ratio-value.bad {
  color: #b83728;
}
.utilization-chart {
  margin-top: 16px;
  padding: 12px 13px 9px;
  border: 1px solid #d8e0eb;
  background: #fbfcfe;
  break-inside: avoid-page;
  page-break-inside: avoid;
}
.utilization-chart__heading {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 9px;
  color: #30445f;
  font-size: 10px;
}
.utilization-chart__heading span {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  color: #657892;
  font-weight: 500;
}
.utilization-chart__heading span i {
  width: 2px;
  height: 11px;
  background: #354a67;
}
.utilization-chart__rows {
  position: relative;
}
.utilization-row,
.utilization-axis {
  display: grid;
  grid-template-columns: minmax(150px, 34%) minmax(100px, 1fr) minmax(
      105px,
      19%
    );
  align-items: center;
  gap: 9px;
}
.utilization-row {
  min-height: 18px;
  border-bottom: 1px solid #edf1f6;
  font-size: 8.5px;
}
.utilization-name {
  overflow-wrap: anywhere;
  color: #34445a;
}
.utilization-track {
  position: relative;
  display: block;
  height: 9px;
  background-color: #edf1f6;
  background-image: linear-gradient(
    to right,
    transparent calc(20% - 0.5px),
    #d7dfe9 20%,
    transparent calc(20% + 0.5px)
  );
  background-size: 20% 100%;
}
.utilization-track::after {
  position: absolute;
  z-index: 2;
  top: -4px;
  bottom: -4px;
  left: var(--limit-position);
  width: 1px;
  background: #354a67;
  content: "";
}
.utilization-bar {
  display: block;
  height: 100%;
  background: #268453;
}
.utilization-bar.fail {
  background: #d74d3e;
}
.utilization-value {
  font-size: 8px;
  text-align: right;
  white-space: nowrap;
}
.utilization-value.pass {
  color: #21804a;
}
.utilization-value.fail {
  color: #b83728;
}
.utilization-axis {
  margin-top: 4px;
  color: #718096;
  font-size: 7.5px;
}
.utilization-axis__ticks {
  position: relative;
  display: block;
  height: 11px;
}
.utilization-axis__ticks span {
  position: absolute;
  transform: translateX(-50%);
}
.utilization-axis__ticks span:first-child {
  transform: none;
}
.utilization-axis__ticks span:last-child {
  transform: translateX(-100%);
}
.report-formula {
  margin: 5px 0 0;
  padding-top: 5px;
  border-top: 1px solid #c9d5e4;
  color: #52647d;
  font-size: 9.5px;
  line-height: 1.65;
}
.report-equation-label {
  display: inline-block;
  margin-top: 4px;
  color: #30445f;
  font-weight: 700;
}
.results-major {
  break-before: page;
  page-break-before: always;
}
.curves-major {
  break-before: page;
  page-break-before: always;
}
.curve-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 6px 18px;
}
.report-chart {
  min-width: 0;
  margin: 12px 0 18px;
  text-align: center;
  break-inside: avoid-page;
  page-break-inside: avoid;
}
.report-chart svg {
  display: block;
  width: 100%;
  height: auto;
  max-height: 315px;
  overflow: visible;
}
.report-chart svg line {
  stroke: #d5dde8;
  stroke-width: 1;
}
.report-chart svg polyline {
  fill: none;
  stroke-width: 3;
}
.report-chart svg text {
  fill: #64738a;
  font-family: inherit;
  font-size: 11px;
}
.report-chart svg .chart-title {
  fill: #24364c;
  font-size: 14px;
  font-weight: 650;
}
.report-chart svg .chart-point {
  fill: #d9493f;
  font-size: 11px;
}
.report-chart figcaption {
  margin-top: 3px;
  color: #74839a;
  font-size: 10px;
  font-style: italic;
}
.report-disclaimer {
  margin: 24px 0 0;
  color: #667791;
  font-size: 10px;
  font-style: italic;
}
.report-actions {
  margin-top: 18px;
}

@media (max-width: 1050px) {
  .calculator-layout {
    grid-template-columns: 1fr;
  }
  .curve-grid {
    grid-template-columns: 1fr;
  }
}
@media (max-width: 640px) {
  .input-grid {
    grid-template-columns: 1fr;
  }
  .field.wide {
    grid-column: auto;
  }
  .report-meta {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
  .governing-card {
    grid-template-columns: 1fr;
    gap: 4px;
  }
  .report-table {
    font-size: 9px;
  }
}

@page {
  size: A4;
  margin: 15mm 14mm 17mm;
  @bottom-left {
    color: #75839a;
    font-family: Arial, sans-serif;
    font-size: 8pt;
    content: "© 2026 Phealy Thourk. All rights reserved.";
  }
  @bottom-right {
    color: #75839a;
    font-family: Arial, sans-serif;
    font-size: 8pt;
    content: "Page " counter(page);
  }
}
@media print {
  html,
  body {
    width: auto;
    min-width: 0;
    margin: 0;
    background: #fff;
  }
  body {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
  .app-header,
  .input-card,
  .screen-only,
  .report-actions {
    display: none !important;
  }
  .workspace {
    max-width: none;
    margin: 0;
    padding: 0;
  }
  .calculator-layout {
    display: block;
  }
  .results-card {
    padding: 0;
    border: 0;
    border-radius: 0;
    box-shadow: none;
  }
  #results-pane > h2 {
    display: none !important;
  }
  .report-document {
    max-width: none;
    margin: 0;
    font-size: 10.5px;
  }
  .report-cover {
    border-radius: 0;
    break-inside: avoid;
  }
  .report-meta {
    gap: 4px;
  }
  .report-major > h2 {
    break-after: avoid-page;
  }
  .report-subsection h3 {
    break-after: avoid-page;
  }
  .report-table tr {
    break-inside: avoid;
  }
  .curve-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 4px 12px;
  }
  .report-chart svg {
    max-height: 260px;
  }
  .report-disclaimer {
    break-inside: avoid;
  }
  .utilization-chart {
    margin-top: 9px;
    padding: 8px 9px 6px;
  }
  .utilization-row,
  .utilization-axis {
    min-height: 15px;
    grid-template-columns: minmax(120px, 34%) minmax(80px, 1fr) minmax(
        92px,
        19%
      );
    gap: 6px;
  }
  .utilization-row {
    font-size: 7.5px;
  }
  .utilization-value {
    font-size: 7px;
  }
}