:root {
  --primary: #1e3a8a;
  --primary-hover: #1e40af;
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --border-focus: #3b82f6;
  --success: #15803d;
  --success-bg: #dcfce7;
  --warning: #b45309;
  --warning-bg: #fef3c7;
  --error: #b91c1c;
  --error-bg: #fee2e2;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

.app-header {
  background-color: #0f172a;
  color: #ffffff;
  padding: 1rem 1.5rem;
  border-bottom: 3px solid #3b82f6;
}

.header-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.brand-title {
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.025em;
}

.brand-subtitle {
  font-size: 0.875rem;
  color: #94a3b8;
  display: block;
}

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

.app-container {
  max-width: 1200px;
  margin: 1.5rem auto;
  padding: 0 1rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.panel {
  background-color: var(--bg-card);
  border-radius: 8px;
  border: 1px solid var(--border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.05);
  overflow: hidden;
}

.panel-header {
  padding: 0.875rem 1.25rem;
  background-color: #f1f5f9;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.panel-header h2 {
  font-size: 1.125rem;
  font-weight: 600;
  color: #1e293b;
}

.panel-body {
  padding: 1.25rem;
}

/* Control Panel */
.form-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.form-row {
  display: flex;
  gap: 0.5rem;
  align-items: flex-end;
}

.form-row > div {
  flex: 1;
}

label {
  font-size: 0.8125rem;
  font-weight: 500;
  color: var(--text-muted);
}

input, select {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.875rem;
  background-color: #ffffff;
  color: var(--text-main);
  outline: none;
  transition: border-color 0.15s ease;
}

input:focus, select:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.2);
}

.hint {
  font-size: 0.75rem;
  color: #64748b;
  margin-top: 0.25rem;
  display: block;
}

.action-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}

.button-group {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.btn {
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
}

.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
}

.btn-primary:hover {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background-color: #e2e8f0;
  color: #1e293b;
}

.btn-secondary:hover {
  background-color: #cbd5e1;
}

.btn-outline {
  border-color: #cbd5e1;
  background-color: #ffffff;
  color: #334155;
}

.btn-outline:hover {
  background-color: #f8fafc;
  border-color: #94a3b8;
}

.btn-small {
  padding: 0.375rem 0.625rem;
  font-size: 0.75rem;
  background-color: #f1f5f9;
  border: 1px solid var(--border);
  color: #334155;
  height: 38px;
}

.btn-large {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
}

.file-label {
  cursor: pointer;
}

/* Badges */
.badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.5rem;
  border-radius: 9999px;
  background-color: #e2e8f0;
  color: #334155;
}

.badge-success {
  background-color: var(--success-bg);
  color: var(--success);
}

.badge-warning {
  background-color: var(--warning-bg);
  color: var(--warning);
}

.badge-error {
  background-color: var(--error-bg);
  color: var(--error);
}

/* Provenance Bar */
.provenance-bar {
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-left: 4px solid var(--primary);
  border-radius: 6px;
  padding: 0.75rem 1rem;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 0.75rem;
  font-size: 0.8125rem;
}

.provenance-item {
  display: flex;
  flex-direction: column;
}

.provenance-item .label {
  color: var(--text-muted);
  font-size: 0.75rem;
}

.provenance-item .value {
  font-weight: 500;
}

/* Alerts */
.alert-box {
  padding: 0.75rem 1rem;
  border-radius: 6px;
  background-color: var(--error-bg);
  border: 1px solid #fca5a5;
  color: var(--error);
  font-size: 0.875rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.alert-close {
  background: none;
  border: none;
  font-size: 1rem;
  cursor: pointer;
  color: inherit;
}

/* 2-Column Grid */
.analysis-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

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

/* Tabs */
.tabs {
  display: flex;
  gap: 0.25rem;
}

.tab-btn {
  background: none;
  border: 1px solid transparent;
  padding: 0.25rem 0.625rem;
  font-size: 0.75rem;
  border-radius: 4px;
  cursor: pointer;
  color: #475569;
  font-weight: 500;
}

.tab-btn.active {
  background-color: #ffffff;
  border-color: var(--border);
  color: var(--primary);
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

/* Wind Rose SVG & Legend */
.wind-rose-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
}

#wind-rose-svg-wrapper {
  width: 100%;
  max-width: 380px;
  aspect-ratio: 1;
  display: flex;
  justify-content: center;
  align-items: center;
}

.wind-legend {
  width: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.75rem;
}

.legend-items {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
}

.legend-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background-color: #f1f5f9;
  padding: 0.125rem 0.375rem;
  border-radius: 4px;
}

.color-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
}

.bin-0 .color-dot { background-color: #93c5fd; }
.bin-1 .color-dot { background-color: #3b82f6; }
.bin-2 .color-dot { background-color: #10b981; }
.bin-3 .color-dot { background-color: #f59e0b; }
.bin-4 .color-dot { background-color: #ef4444; }

.calm-indicator {
  font-size: 0.8125rem;
  color: #334155;
  margin-top: 0.25rem;
}

/* Metrics Grid */
.metrics-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.75rem;
  margin-top: 1.25rem;
}

.metric-card {
  background-color: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.75rem;
  display: flex;
  flex-direction: column;
  text-align: center;
}

.metric-label {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.metric-value {
  font-size: 1.25rem;
  font-weight: 700;
  color: #0f172a;
  margin: 0.25rem 0;
}

.metric-sub {
  font-size: 0.6875rem;
  color: #64748b;
}

/* Solar Section */
.solar-chart-container {
  width: 100%;
  height: 240px;
  display: flex;
  justify-content: center;
  align-items: center;
  background-color: #f8fafc;
  border-radius: 6px;
  border: 1px solid var(--border);
  padding: 0.5rem;
}

#solar-chart-wrapper {
  width: 100%;
  height: 100%;
}

.date-picker-inline {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
}

/* Placement Layout */
.placement-layout {
  display: grid;
  grid-template-columns: 550px 1fr;
  gap: 1.5rem;
}

@media (max-width: 1000px) {
  .placement-layout {
    grid-template-columns: 1fr;
  }
}

.canvas-wrapper {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

#plan-canvas {
  background-color: #f1f5f9;
  border: 1px solid var(--border);
  border-radius: 6px;
  max-width: 100%;
  height: auto;
  cursor: grab;
}

.canvas-legend {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  font-size: 0.75rem;
  color: #475569;
  justify-content: center;
}

.dot {
  width: 10px;
  height: 10px;
  display: inline-block;
  border-radius: 2px;
  margin-right: 0.25rem;
}

.dot-house { background-color: #1e3a8a; }
.dot-terrace { background-color: #f59e0b; }
.dot-entrance { background-color: #10b981; }
.dot-wind { background-color: #3b82f6; }
.dot-parcel { background-color: #2563eb; }

.map-and-plan-wrapper {
  display: flex;
  flex-direction: column;
}

.map-view-box {
  position: relative;
  width: 100%;
  height: 500px;
  border-radius: 8px;
  overflow: hidden;
  border: 1px solid var(--border);
  background-color: #eef2f7;
}

.map-libre-viewport {
  width: 100%;
  height: 100%;
}

.view-switch-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.terrain-inspector-bar {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.5rem;
  margin-top: 0.75rem;
  padding: 0.625rem 0.75rem;
  background-color: #f1f5f9;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.75rem;
}

.inspector-item {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.inspector-item .label {
  color: var(--text-muted);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.inspector-item .value {
  color: var(--text-main);
  font-weight: 600;
}

.select-small {
  padding: 0.25rem 0.5rem;
  font-size: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background-color: #fff;
}

.print-only {
  display: none;
}

.placement-controls {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.control-box {
  background-color: #f8fafc;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.875rem;
}

.control-box h3 {
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

.control-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.5rem;
  align-items: center;
  margin-bottom: 0.5rem;
  font-size: 0.8125rem;
}

.margins-card {
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.75rem;
}

.margins-card h4 {
  font-size: 0.8125rem;
  margin-bottom: 0.375rem;
}

.margins-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
  font-size: 0.8125rem;
}

.evaluation-card {
  background-color: #eff6ff;
  border: 1px solid #bfdbfe;
  border-radius: 6px;
  padding: 0.75rem;
  font-size: 0.8125rem;
}

.evaluation-card h4 {
  color: #1e40af;
  margin-bottom: 0.25rem;
}

/* Variant Cards */
.variants-section h3 {
  font-size: 0.9375rem;
  margin-bottom: 0.5rem;
}

.variant-cards {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.variant-card {
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-left: 3px solid #cbd5e1;
  border-radius: 6px;
  padding: 0.75rem;
  cursor: pointer;
  transition: all 0.15s ease;
}

.variant-card:hover {
  border-color: #94a3b8;
  background-color: #f8fafc;
}

.variant-card.active {
  border-left-color: var(--primary);
  border-color: #93c5fd;
  background-color: #f0f7ff;
}

.variant-card-title {
  font-size: 0.875rem;
  font-weight: 600;
  color: #1e293b;
  display: flex;
  justify-content: space-between;
}

.variant-card-desc {
  font-size: 0.75rem;
  color: #475569;
  margin-top: 0.25rem;
}

.variant-card-tradeoff {
  font-size: 0.6875rem;
  color: #64748b;
  margin-top: 0.25rem;
  font-style: italic;
}

/* CTA & Disclaimer */
.cta-panel {
  padding: 1.5rem;
  background-color: #ffffff;
  border-top: 3px solid #10b981;
}

.cta-content h3 {
  font-size: 1.125rem;
  color: #0f172a;
}

.cta-content p {
  color: #475569;
  font-size: 0.875rem;
  margin: 0.5rem 0 1rem;
}

.disclaimer-text {
  margin-top: 1.25rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
  font-size: 0.75rem;
  color: #64748b;
  line-height: 1.4;
}

.app-footer {
  background-color: #ffffff;
  border-top: 1px solid var(--border);
  padding: 1rem 1.5rem;
  font-size: 0.75rem;
  color: #64748b;
  margin-top: 2rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.5rem;
}

/* Spinner */
.spinner {
  font-size: 0.8125rem;
  color: var(--primary);
  font-weight: 500;
}

/* Print Styles */
.saved-variant-card {
  background: #ffffff;
  border: 1px solid #cbd5e1;
  border-radius: 6px;
  padding: 0.625rem 0.75rem;
  margin-bottom: 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.saved-variant-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.saved-variant-title {
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--text-main);
}

.saved-variant-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(110px, 1fr));
  gap: 0.35rem;
  font-size: 0.75rem;
  color: #475569;
}

.saved-variant-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
  margin-top: 0.25rem;
}

@media print {
  body {
    background-color: #ffffff;
    color: #000000;
    font-size: 11pt;
  }

  .no-print {
    display: none !important;
  }

  .print-only {
    display: inline-block !important;
  }

  .app-container {
    max-width: 100%;
    margin: 0;
    padding: 0;
    gap: 1rem;
  }

  .panel {
    border: 1px solid #ccc;
    box-shadow: none;
    page-break-inside: avoid;
  }

  .panel-header {
    background-color: #eee;
  }

  .analysis-grid, .placement-layout {
    grid-template-columns: 1fr;
  }

  #plan-canvas {
    max-width: 450px;
  }

  .map-view-box {
    height: 380px;
    page-break-inside: avoid;
  }

  .terrain-inspector-bar {
    page-break-inside: avoid;
  }
}