:root {
  --bg: #f4f6f8;
  --panel: #ffffff;
  --text: #18212f;
  --muted: #64748b;
  --line: #d8dee8;
  --accent: #0f8b6f;
  --accent-dark: #0a624f;
  --warn: #9a5b00;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 Arial, Helvetica, sans-serif;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  padding: 20px 28px;
  background: #10252e;
  color: #fff;
}

h1,
h2,
p {
  margin: 0;
}

h1 {
  font-size: 24px;
  font-weight: 700;
}

h2 {
  font-size: 17px;
  margin-bottom: 14px;
}

.topbar p {
  color: #c8d6dd;
  margin-top: 4px;
}

.actions {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
}

button {
  border: 1px solid transparent;
  background: var(--accent);
  color: #fff;
  padding: 10px 16px;
  border-radius: 6px;
  font-weight: 700;
  cursor: pointer;
}

button:hover {
  background: var(--accent-dark);
}

.exportStatus {
  max-width: 280px;
  color: #d9e8ee;
  font-size: 12px;
}

.exportStatus a {
  color: #ffffff;
  font-weight: 700;
}

.reportView {
  display: none;
}

.reportMode > .topbar,
.reportMode > .layout,
.reportMode > footer {
  display: none;
}

.reportMode .reportView {
  display: block;
  max-width: 1120px;
  margin: 0 auto;
  padding: 24px;
  background: #fff;
}

.reportActions {
  display: flex;
  gap: 10px;
  margin-bottom: 18px;
}

.reportSheet h1 {
  padding-bottom: 10px;
  border-bottom: 3px solid var(--accent);
  font-size: 28px;
  margin-bottom: 8px;
}

.reportSheet h2 {
  margin-top: 26px;
  padding-bottom: 6px;
  border-bottom: 1px solid var(--line);
}

.reportMeta,
.reportNote {
  color: var(--muted);
  margin-bottom: 14px;
}

.reportMetrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 12px;
  margin: 14px 0;
}

.reportMetric {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 12px;
  background: #f8fbfa;
}

.reportMetric span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.reportMetric strong {
  display: block;
  margin-top: 5px;
  font-size: 20px;
}

.reportChart {
  width: 100%;
  max-height: 330px;
  object-fit: contain;
  border: 1px solid var(--line);
  border-radius: 6px;
}

.reportRoofSlope {
  break-inside: avoid;
  page-break-inside: avoid;
  margin-bottom: 18px;
}

.reportRoofSlope h3 {
  margin: 12px 0 8px;
  font-size: 15px;
}

.reportRoofImage {
  max-height: 430px;
}

.reportAppendix {
  break-before: page;
  page-break-before: always;
  margin-top: 28px;
}

.reportAppendix h3 {
  margin: 18px 0 8px;
  font-size: 15px;
}

.reportAppendix ul {
  margin: 0 0 10px 18px;
  padding: 0;
}

.reportAppendix li {
  margin-bottom: 7px;
}

.reportFaq {
  display: grid;
  gap: 6px;
}

.reportFaq p {
  margin: 0;
}

.reportSheet table {
  margin-top: 8px;
  font-size: 12px;
}

.reportSheet th {
  background: #10252e;
  color: #fff;
}

.reportSheet tr:last-child td {
  border-top: 2px solid var(--accent);
  font-weight: 700;
}

.reportSheet td:last-child {
  color: var(--muted);
  font-size: 11px;
}

.layout {
  display: grid;
  grid-template-columns: minmax(700px, 780px) minmax(0, 1fr);
  gap: 18px;
  padding: 18px;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}

.inputs {
  grid-row: span 4;
}

.chart,
.summary,
.roofLayoutPanel,
.recommendations,
.specGrid,
.estimate,
.economics {
  grid-column: 2;
}

.specGrid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 18px;
}

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

.manualSpecsGrid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 8px;
  margin-bottom: 4px;
}

.manualSpecsGrid label {
  grid-template-columns: 1fr;
  gap: 4px;
  margin-bottom: 0;
}

label {
  display: grid;
  gap: 6px;
  margin-bottom: 12px;
  color: #334155;
  font-weight: 700;
}

.inputs label {
  grid-template-columns: 118px minmax(0, 1fr);
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
  font-size: 12px;
}

.inputRows {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0 10px;
}

.tariffInputs {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin: 0 0 12px;
  padding: 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #f9fbfc;
}

.tariffInputs label {
  grid-template-columns: 1fr;
  gap: 4px;
  margin-bottom: 0;
}

.calcOnly {
  display: none !important;
}

.equipmentRows {
  display: grid;
  gap: 8px;
  margin-bottom: 8px;
}

.fieldHint {
  margin: 2px 0 12px;
  color: var(--muted);
  font-size: 12px;
}

.layoutControls {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 10px;
}

.layoutSlopeTabs {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 12px;
}

.layoutSlopeTabList {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.layoutSlopeTab {
  border-color: var(--line);
  background: #eef3f6;
  color: var(--text);
  padding: 8px 12px;
}

.layoutSlopeTab.active {
  border-color: var(--accent);
  background: var(--accent);
  color: #fff;
}

.iconButton {
  width: 36px;
  min-width: 36px;
  padding: 8px 0;
  font-size: 18px;
  line-height: 1;
}

.layoutControls label {
  grid-template-columns: 1fr;
  gap: 4px;
  margin-bottom: 0;
}

.layoutActions {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 12px 0;
  flex-wrap: wrap;
}

.layoutActions .fieldHint {
  margin: 0;
}

.pvInputPicker {
  display: grid;
  grid-template-columns: auto minmax(96px, 140px);
  align-items: center;
  gap: 8px;
  margin: 0;
  font-weight: 700;
}

.pvInputPicker select {
  min-width: 110px;
}

.layoutMpptInfo {
  display: grid;
  gap: 8px;
  margin: 8px 0 12px;
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px;
  background: #f8fafc;
}

.mpptSummary {
  display: grid;
  gap: 3px;
}

.mpptSummary span {
  color: var(--muted);
  font-size: 13px;
}

.mpptInputs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.mpptInputs div {
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  padding: 7px 9px;
  background: #fff;
}

.mpptInputs span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.mpptInputs strong {
  display: block;
  margin-top: 2px;
}

.layoutMetrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 10px;
  margin-top: 12px;
}

.layoutMetrics div {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 10px;
  background: #f9fbfc;
}

.layoutMetrics span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.layoutMetrics strong {
  display: block;
  margin-top: 4px;
  font-size: 16px;
}

.calcActions {
  display: flex;
  justify-content: flex-end;
  margin-top: 6px;
}

.equipmentRow {
  display: grid;
  gap: 10px;
}

.equipmentRow.two {
  grid-template-columns: minmax(0, 1fr) 185px;
}

.equipmentRow.three {
  grid-template-columns: minmax(0, 1fr) 120px 185px;
}

.equipmentRow.inverterRow {
  grid-template-columns: minmax(220px, 1fr) 135px 105px 160px;
}

.equipmentRow.inverterRow .modelField {
  grid-column: 1 / -1;
}

.equipmentRow label {
  grid-template-columns: max-content minmax(0, 1fr);
  margin-bottom: 0;
}

.equipmentRow .modelField {
  grid-template-columns: 70px minmax(0, 1fr);
}

select,
input {
  width: 100%;
  min-height: 34px;
  border: 1px solid #b8c2cf;
  border-radius: 6px;
  padding: 6px 9px;
  color: var(--text);
  background: #fff;
}

.grid2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.roofSlopes {
  display: grid;
  gap: 8px;
  margin-bottom: 10px;
}

.roofSlope {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 10px;
  background: #f9fbfc;
}

.roofSlope h3 {
  margin: 0 0 8px;
  font-size: 14px;
}

.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 12px;
}

.metrics div {
  border: 1px solid var(--line);
  border-radius: 6px;
  padding: 12px;
  background: #f9fbfc;
}

.metrics span {
  display: block;
  color: var(--muted);
  font-size: 12px;
}

.metrics strong {
  display: block;
  margin-top: 6px;
  font-size: 20px;
}

.notice {
  margin-top: 14px;
  color: var(--warn);
}

.recommendationsList,
.reportRecommendations {
  display: grid;
  gap: 10px;
}

.recommendation {
  border-left: 4px solid var(--line);
  border-radius: 6px;
  padding: 10px 12px;
  background: #f9fbfc;
}

.recommendation strong,
.recommendation span {
  display: block;
}

.recommendation span {
  margin-top: 3px;
  color: var(--muted);
}

.recommendation.ok {
  border-left-color: var(--accent);
}

.recommendation.warn {
  border-left-color: var(--warn);
}

.recommendation.bad {
  border-left-color: #b42318;
}

.tableWrap {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  border-bottom: 1px solid var(--line);
  padding: 9px 8px;
  text-align: left;
  vertical-align: top;
}

th {
  background: #eef3f6;
  color: #243447;
  font-size: 12px;
}

td.num,
th.num {
  text-align: right;
  white-space: nowrap;
}

.estimateInput {
  min-height: 30px;
  max-width: 110px;
  padding: 5px 7px;
  text-align: right;
}

.estimateTextInput {
  min-height: 30px;
  padding: 5px 7px;
}

.estimateTextInput.unit {
  max-width: 76px;
}

.estimateAddRow td {
  background: #fbfdfe;
  padding: 8px;
}

.estimateAddButton,
.estimateRemoveRow {
  padding: 6px 10px;
  font-size: 12px;
}

.estimateRemoveRow {
  margin-left: 8px;
  background: #eef3f6;
  color: var(--text);
  border-color: var(--line);
}

.estimateRemoveRow:hover {
  background: #dfe9ee;
}

.sectionRow td {
  background: #dfe9ee;
  color: #10252e;
  font-weight: 700;
}

.subtotalRow td,
.totalRow td {
  background: #f8fbfa;
  font-weight: 700;
}

.totalRow td {
  border-top: 2px solid var(--accent);
}

canvas {
  display: block;
  width: 100%;
  height: 320px;
  border: 1px solid var(--line);
  border-radius: 6px;
  background: #fff;
}

.roofCanvasWrap {
  position: relative;
}

.dimensionEditor {
  position: absolute;
  z-index: 3;
  width: 104px;
  padding: 4px;
  border: 1px solid var(--accent);
  border-radius: 6px;
  background: #fff;
  box-shadow: 0 8px 20px rgba(15, 35, 46, 0.18);
}

.dimensionEditor input {
  min-height: 28px;
  padding: 4px 6px;
  text-align: center;
}

#roofLayoutCanvas {
  height: 560px;
  cursor: grab;
  touch-action: none;
}

#roofLayoutCanvas:active {
  cursor: grabbing;
}

footer {
  padding: 16px 24px 28px;
  color: var(--muted);
}

@media (max-width: 980px) {
  .layout {
    grid-template-columns: 1fr;
  }

  .inputs,
  .chart,
  .summary,
  .roofLayoutPanel,
  .recommendations,
  .specGrid,
  .estimate,
  .economics {
    grid-column: 1;
  }

  .specGrid,
  .manualSpecsGrid {
    grid-template-columns: 1fr;
  }

  .metrics {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 720px) {
  .inputRows,
  .layoutControls,
  .equipmentRow.two,
  .equipmentRow.three,
  .equipmentRow.inverterRow {
    grid-template-columns: 1fr;
  }

  .tariffInputs {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 520px) {
  .tariffInputs {
    grid-template-columns: 1fr;
  }

  .inputs label {
    grid-template-columns: 1fr;
    gap: 4px;
  }

  .grid2 {
    grid-template-columns: 1fr;
  }
}

@media print {
  body {
    background: #fff;
  }

  .topbar,
  footer,
  .inputs,
  button,
  .reportActions {
    display: none;
  }

  .reportMode .reportView {
    display: block;
    padding: 0;
  }

  .layout {
    display: block;
    padding: 0;
  }

  .panel {
    break-inside: avoid;
    border: 0;
    padding: 10px 0;
  }
}