:root {
  color-scheme: light;
  font-family: "Inter", system-ui, sans-serif;
  --bg: #f5f6fb;
  --panel: #ffffff;
  --border: #d6d8e5;
  --text: #1d1f2c;
  --muted: #5f657f;
  --accent: #2f5dff;
  --accent-light: #e6ebff;
  --draw-calibrate: #f97316;
  --draw-room: #2563eb;
  --draw-interior-wall: #7c3aed;
  --draw-interior-divider: #c4b5fd;
  --draw-wall: #15803d;
  --draw-window: #2563eb;
  --draw-door: #eab308;
  --draw-north: #facc15;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
}

.hidden {
  display: none;
}

.auth-panel {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  align-items: flex-start;
  justify-content: space-between;
  padding: 2rem 4vw 1.5rem;
  background: #0f172a;
  color: #f8fafc;
}

.auth-panel h1 {
  margin-bottom: 0.4rem;
}

.auth-panel .section-intro {
  color: rgba(248, 250, 252, 0.8);
}

.auth-controls {
  display: grid;
  gap: 0.75rem;
  min-width: 280px;
  max-width: 360px;
  width: 100%;
}

.auth-controls label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.85rem;
}

.auth-controls input {
  padding: 0.55rem 0.7rem;
  border-radius: 0.5rem;
  border: 1px solid rgba(148, 163, 184, 0.5);
}

.auth-helper {
  margin: 0;
  font-size: 0.85rem;
  color: rgba(248, 250, 252, 0.7);
}

.auth-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.auth-status {
  font-size: 0.85rem;
  display: flex;
  gap: 0.4rem;
  align-items: baseline;
}

.auth-message {
  padding: 1rem 4vw;
  background: #fff7ed;
  border-bottom: 1px solid #fed7aa;
  color: #7c2d12;
}

.auth-flow {
  padding: 2rem 4vw 1.5rem;
}

.auth-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 2rem;
  max-width: 520px;
  margin: 0 auto;
  display: grid;
  gap: 1rem;
  box-shadow: 0 12px 30px rgba(15, 23, 42, 0.08);
}

.auth-card label {
  display: grid;
  gap: 0.35rem;
  font-size: 0.9rem;
}

.dashboard-section header h2 {
  margin: 0;
}

.dashboard-main {
  padding: 2rem 2.5rem 3rem;
}

.dashboard-status,
.dashboard-empty {
  color: var(--muted);
  margin: 0 0 1.5rem;
}

.dashboard-projects {
  display: grid;
  gap: 1.5rem;
}

.folder-group {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: 0 8px 20px rgba(22, 29, 60, 0.06);
}

.folder-group h3 {
  margin: 0 0 1rem;
  font-size: 1rem;
  color: var(--muted);
}

.project-list {
  display: grid;
  gap: 1rem;
}

.project-card {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1rem;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #f9f9ff;
}

.project-meta {
  display: grid;
  gap: 0.35rem;
}

.project-meta strong {
  font-size: 1rem;
}

.project-meta span {
  font-size: 0.85rem;
  color: var(--muted);
}

.project-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.app-section header h2 {
  margin: 0;
}

header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5rem 2.5rem;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
}

header h1 {
  margin: 0 0 0.25rem;
}

header p {
  margin: 0;
  color: var(--muted);
}

.section-intro {
  margin: 0.35rem 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.header-actions button {
  margin-left: 0.5rem;
}

main {
  padding: 2rem 2.5rem 4rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.panel {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1.5rem;
  box-shadow: 0 8px 20px rgba(22, 29, 60, 0.06);
}

.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.settings-groups {
  display: grid;
  gap: 1.5rem;
}

.settings-group {
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 1rem;
  background: #f9f9ff;
}

.settings-group h3 {
  margin: 0 0 0.75rem;
  font-size: 1rem;
  color: var(--muted);
}

.progress-checklist {
  margin-top: 1.5rem;
  padding: 1rem;
  border: 1px solid var(--border);
  border-radius: 12px;
  background: #f8f9ff;
}

.progress-checklist h3 {
  margin: 0 0 0.35rem;
  font-size: 1rem;
}

.progress-list {
  display: grid;
  gap: 0.5rem;
  margin: 0.75rem 0 0;
  padding-left: 1.25rem;
}

.progress-list li {
  position: relative;
  padding: 0.45rem 0.6rem 0.45rem 2rem;
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-size: 0.9rem;
}

.progress-list li::before {
  content: "○";
  position: absolute;
  left: 0.6rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-weight: 700;
}

.progress-list li.is-complete {
  border-color: #86efac;
  background: #f0fdf4;
  color: #166534;
}

.progress-list li.is-complete::before {
  content: "✓";
  color: #16a34a;
}

label {
  display: flex;
  flex-direction: column;
  font-size: 0.9rem;
  gap: 0.4rem;
}

input,
select,
button {
  font: inherit;
  padding: 0.5rem 0.65rem;
  border-radius: 8px;
  border: 1px solid var(--border);
}

button {
  background: var(--accent);
  color: white;
  border: none;
  cursor: pointer;
  transition: transform 0.1s ease, box-shadow 0.1s ease;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 10px rgba(47, 93, 255, 0.2);
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.6;
}

.secondary {
  background: #eef1ff;
  color: var(--text);
  border: 1px solid var(--border);
}

.modal {
  border: none;
  padding: 0;
  border-radius: 16px;
  width: min(560px, 95vw);
  max-height: none;
  position: fixed;
  inset: 1.5rem auto auto 50%;
  transform: translate(-50%, 0);
  margin: 0;
  box-shadow: 0 20px 60px rgba(15, 23, 42, 0.2);
}

.modal::backdrop {
  background: rgba(15, 23, 42, 0.45);
}

.modal-card {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding: 1.5rem;
  max-height: none;
  overflow: visible;
}

.modal-card h3 {
  margin: 0;
}

.modal-fields {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

.zip-row {
  display: flex;
  gap: 0.5rem;
}

.zip-row input {
  flex: 1;
}

.assembly-section {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1.5rem;
}

.chart-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
  margin: 0.75rem 0 0.5rem;
}

.chart-controls label {
  font-size: 0.85rem;
  color: var(--muted);
}

.chart-shortcuts {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.chart-canvas {
  width: 100%;
  height: 320px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background: #fdfdff;
}

.chart-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  margin-top: 0.75rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.chart-legend-item {
  display: flex;
  align-items: flex-start;
  gap: 0.5rem;
}

.chart-legend-text {
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  line-height: 1.2;
}

.chart-legend-value {
  font-weight: 600;
  color: var(--text);
}

.chart-swatch {
  width: 18px;
  height: 6px;
  border-radius: 999px;
  background: var(--muted);
}

.form-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
}

.form-row input {
  flex: 1 1 120px;
}

ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

ul li {
  padding: 0.4rem 0.6rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 0.4rem;
  background: #f9f9ff;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.plan-section {
  padding: 0;
}

.plan-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.plan-title {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.plan-title .section-intro {
  margin: 0;
}

.plan-body {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 1.5rem;
  padding: 1.5rem;
}

.plan-main {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.plan-list {
  border-bottom: 1px solid var(--border);
  padding-bottom: 1rem;
}

.plan-list ul {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.plan-list li {
  margin-bottom: 0;
}

.plan-list li {
  cursor: pointer;
}

.plan-list li.active {
  border-color: var(--accent);
  background: var(--accent-light);
}

.plan-workspace {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.plan-controls {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.8rem;
}

.draw-controls {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.assembly-draw-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.draw-controls button {
  background: #eef1ff;
  color: var(--text);
  border: 1px solid var(--border);
}

.draw-controls button[data-mode] {
  color: white;
  border: none;
}

.draw-controls button[data-mode="edit"] {
  color: #1d1f2c;
  background: #eef1ff;
  border: 1px solid var(--border);
}

.draw-controls button[data-mode="calibrate"] {
  background: var(--draw-calibrate);
}

.draw-controls button[data-mode="room"] {
  background: var(--draw-room);
}

.draw-controls button[data-mode="interior-wall"] {
  background: var(--draw-interior-wall);
}

.draw-controls button[data-mode="interior-divider"] {
  background: var(--draw-interior-divider);
}

.draw-controls button[data-mode="wall"] {
  background: var(--draw-wall);
}

.draw-controls button[data-mode="window"] {
  background: var(--draw-window);
}

.draw-controls button[data-mode="door"] {
  background: var(--draw-door);
}

.draw-controls button[data-mode="north"] {
  background: var(--draw-north);
  color: #1d1f2c;
}

.draw-controls button.active {
  box-shadow: 0 0 0 3px rgba(29, 31, 44, 0.2);
}

.checkbox-control {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 500;
  color: var(--muted);
}

.checkbox-control input {
  width: 16px;
  height: 16px;
  accent-color: #2563eb;
}

.canvas-wrapper {
  background: #eef0f7;
  border-radius: 12px;
  padding: 0.75rem;
}

.canvas-container {
  position: relative;
  width: 100%;
  height: calc(624px + 10vh);
  border-radius: 12px;
  overflow: hidden;
  background: white;
  border: 1px dashed var(--border);
}

.canvas-container.crosshair {
  cursor: crosshair;
}

.canvas-container img {
  position: absolute;
  width: 100%;
  height: 100%;
  object-fit: contain;
}

.canvas-container svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}

.draw-tooltip {
  position: absolute;
  z-index: 2;
  padding: 0.35rem 0.5rem;
  background: rgba(15, 23, 42, 0.92);
  color: #f8fafc;
  border-radius: 6px;
  font-size: 0.75rem;
  line-height: 1.2;
  white-space: pre-line;
  pointer-events: none;
  opacity: 0;
  transform: translate3d(0, 0, 0);
  transition: opacity 0.1s ease-in-out;
}

.calibration-info {
  font-size: 0.9rem;
  color: var(--muted);
}

.room-panel {
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}

.summary-collapse {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #ffffff;
  padding: 0.5rem 0.75rem;
  margin-bottom: 0.75rem;
}

.summary-collapse summary {
  cursor: pointer;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
}

.summary-collapse summary::-webkit-details-marker {
  display: none;
}

.summary-collapse summary::after {
  content: "▾";
  font-size: 0.85rem;
  color: var(--muted);
}

.summary-collapse[open] summary::after {
  content: "▴";
}

.summary-collapse .summary-table {
  margin-top: 0.5rem;
}

.load-share {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.load-share-bar {
  flex: 1;
  height: 8px;
  border-radius: 999px;
  background: #e2e8f0;
  overflow: hidden;
}

.load-share-bar span {
  display: block;
  height: 100%;
  border-radius: inherit;
  background: linear-gradient(90deg, #60a5fa, #2563eb);
  width: 0;
}

.load-share-label {
  min-width: 2.5rem;
  text-align: right;
  font-size: 0.75rem;
  color: var(--muted);
}

.room-outlier {
  stroke: #dc2626;
  stroke-width: 3;
}

.room-details-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 1.5rem;
  align-items: start;
}

.window-diagram-panel {
  margin-top: 1.25rem;
}

.window-diagrams {
  display: grid;
  gap: 1rem;
}

.window-diagram-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.75rem;
  background: #f8f9ff;
  display: grid;
  gap: 0.75rem;
}

.window-diagram-header {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  color: var(--text);
}

.window-diagram-grid {
  display: grid;
  grid-template-columns: minmax(190px, 0.9fr) minmax(220px, 1fr) minmax(220px, 1fr);
  gap: 0.75rem;
}

.window-diagram h5 {
  margin: 0 0 0.35rem;
  font-size: 0.85rem;
  color: var(--muted);
}

.diagram-svg {
  width: 100%;
  height: auto;
  background: #ffffff;
  border: 1px dashed var(--border);
  border-radius: 8px;
}

.window-diagram-table {
  border: 1px dashed var(--border);
  border-radius: 8px;
  background: #ffffff;
  padding: 0.25rem;
  overflow: auto;
}

.solar-gain-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.75rem;
  color: var(--text);
}

.solar-gain-table th,
.solar-gain-table td {
  padding: 0.2rem 0.35rem;
  text-align: right;
}

.solar-gain-table th:first-child,
.solar-gain-table td:first-child {
  text-align: left;
}

.solar-gain-table thead th {
  font-weight: 600;
  color: var(--muted);
}

.solar-gain-table tbody tr:nth-child(even) {
  background: #f8f9ff;
}

@media (max-width: 900px) {
  .window-diagram-grid {
    grid-template-columns: 1fr;
  }
}

.wall-line {
  stroke: #1f2937;
  stroke-width: 3;
}

.window-rect {
  fill: #93c5fd;
  stroke: #1d4ed8;
  stroke-width: 2;
}

.window-section-line {
  stroke: #1d4ed8;
  stroke-width: 6;
  stroke-linecap: round;
}

.overhang-line {
  stroke: #0f172a;
  stroke-width: 3;
}

.sun-line {
  stroke-width: 2;
  stroke-dasharray: 4 4;
}

.sun-line.summer,
.sun-path.summer,
.sun-ray.summer,
.sun-angle.summer {
  stroke: #f97316;
  fill: none;
  color: #f97316;
}

.sun-line.winter,
.sun-path.winter,
.sun-ray.winter,
.sun-angle.winter {
  stroke: #38bdf8;
  fill: none;
  color: #38bdf8;
}

.sun-angle {
  font-size: 10px;
  font-weight: 600;
}

.solar-series-label {
  font-size: 9px;
  fill: var(--muted);
  font-weight: 600;
}

.solar-series {
  font-size: 9px;
  fill: var(--text);
}

.window-line {
  stroke: #1d4ed8;
  stroke-width: 4;
}

.sun-path {
  stroke-width: 2;
}

.sun-arc {
  stroke: none;
  fill-opacity: 0.25;
}

.sun-arc.summer {
  fill: #f97316;
}

.sun-arc.winter {
  fill: #38bdf8;
}

.sun-ray {
  stroke-width: 1.5;
  opacity: 0.6;
}

.sunrise-label,
.sunset-label,
.north-label {
  font-size: 10px;
  fill: var(--muted);
}

.north-arrow {
  stroke: var(--muted);
  stroke-width: 1.5;
}

.diagram-legend {
  display: flex;
  gap: 0.75rem;
  font-size: 0.75rem;
  color: var(--muted);
}

.diagram-legend .legend-item::before {
  content: "";
  display: inline-block;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  margin-right: 0.35rem;
  background: currentColor;
}

.diagram-legend .legend-item.summer {
  color: #f97316;
}

.diagram-legend .legend-item.winter {
  color: #38bdf8;
}

.room-info {
  display: grid;
  gap: 1rem;
}

.room-info h4 {
  margin: 0 0 0.5rem;
  font-size: 1rem;
}

.summary {
  background: #f8f9ff;
  border-radius: 10px;
  padding: 1rem;
  border: 1px solid var(--border);
  font-size: 0.9rem;
  max-height: 500px;
  overflow: auto;
}

#roomSummary {
  max-height: none;
  overflow: visible;
}

.project-summary {
  max-height: none;
  overflow: visible;
}

.summary-columns {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 1rem;
  margin: 1rem 0;
}

.summary-card {
  background: #ffffff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 1rem;
  box-shadow: 0 6px 16px rgba(22, 29, 60, 0.06);
}

.summary-card h4 {
  margin-top: 0;
}

.summary-subsection h5 {
  margin: 0.75rem 0 0.25rem;
  font-size: 0.9rem;
  color: var(--muted);
}

.summary-subsection:first-of-type h5 {
  margin-top: 0;
}

.badge {
  display: inline-block;
  margin-left: 0.35rem;
  padding: 0.1rem 0.5rem;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: #eef1ff;
  color: var(--text);
  font-size: 0.75rem;
  font-weight: 600;
}

.summary-warning {
  margin-top: 0.85rem;
  padding: 0.75rem 0.9rem;
  border-radius: 10px;
  border: 1px solid #fed7aa;
  background: #fff7ed;
  color: #9a3412;
}

.summary-warning ul {
  margin: 0.4rem 0 0 1.25rem;
  padding: 0;
}

.outlier-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.5rem;
}

.outlier-list li {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  align-items: baseline;
}

.outlier-link {
  background: none;
  border: none;
  padding: 0;
  color: var(--accent);
  font-weight: 600;
  cursor: pointer;
}

.outlier-link:hover,
.outlier-link:focus {
  text-decoration: underline;
}

.outlier-metric {
  color: var(--muted);
  font-size: 0.85rem;
}

.summary-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.summary-table th,
.summary-table td {
  padding: 0.35rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.summary table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.summary table td,
.summary table th {
  padding: 0.35rem;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.summary .schedule-section + .schedule-section {
  margin-top: 1rem;
}

.summary .schedule-section h5 {
  margin: 0 0 0.5rem;
  font-size: 0.95rem;
}

.summary .schedule-input {
  width: 100%;
  min-width: 5rem;
  padding: 0.2rem 0.35rem;
  font-size: 0.85rem;
}

.muted {
  color: var(--muted);
}

pre {
  background: #0d1117;
  color: #dce3ff;
  padding: 1rem;
  border-radius: 8px;
  max-height: 320px;
  overflow: auto;
}

footer {
  text-align: center;
  padding: 1.5rem;
  color: var(--muted);
}

@media (max-width: 1200px) {
  .plan-body {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .plan-list,
  .room-panel {
    border: none;
    padding: 0;
  }

  .room-details-grid {
    grid-template-columns: 1fr;
  }
}