/* ============================================
   Solar Chemical Plant Builder — Styles
   ============================================ */

:root {
  --range-thumb-size: 12px;
  --bg-primary: #111316;
  --bg-secondary: #181c20;
  --bg-card: #1d2228;
  --bg-card-hover: #232931;
  --border: #2d343d;
  --border-light: #46515d;

  --text-primary: #eef2f6;
  --text-secondary: #c6ced8;
  --text-muted: #8d99a8;

  --solar: #c6923a;
  --solar-dim: #8a6d35;
  --electric: #5f7fb8;
  --electric-dim: #496596;
  --h2: #6ba5b5;
  --co2: #8c84b4;
  --methane: #6ba177;
  --fuel: #b47b41;
  --ammonia: #a07693;
  --battery: #6c76a9;
  --danger: #c77379;
  --success: #7ea96d;
  --warning: #c79a48;

  --radius: 6px;
  --radius-lg: 10px;
  --shadow: 0 10px 24px rgba(0, 0, 0, 0.18);
  --transition: 0.18s ease;

  --panel-width: 330px;
}

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

html, body {
  height: 100%;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  background: #101214;
  color: var(--text-primary);
  font-size: 13px;
  line-height: 1.5;
  overflow: hidden;
}

/* ---- Scrollbar ---- */
::-webkit-scrollbar {
  width: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: var(--border-light);
}

/* ============ HEADER ============ */

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 12px 18px;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  height: 72px;
  flex-shrink: 0;
}

.header-left {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.header-left h1 {
  font-size: 18px;
  font-weight: 650;
  letter-spacing: -0.01em;
  color: var(--text-primary);
  background: none;
  -webkit-text-fill-color: currentColor;
}

.header-left .subtitle {
  font-size: 10px;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.header-metrics {
  display: flex;
  gap: 8px;
  align-items: stretch;
  flex-wrap: nowrap;
}

.metric {
  text-align: left;
  min-width: 92px;
  padding: 8px 10px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.metric-label {
  display: block;
  font-size: 10px;
  letter-spacing: 0.02em;
  color: var(--text-muted);
}

.metric-value {
  display: block;
  font-size: 14px;
  font-weight: 650;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
  line-height: 1.25;
  white-space: nowrap;
}

.metric.viability .metric-value {
  padding: 0;
  font-size: 13px;
  transition: var(--transition);
}

.metric.viability.viable {
  border-color: rgba(126, 169, 109, 0.35);
}

.metric.viability.viable .metric-value {
  background: none;
  color: var(--success);
}

.metric.viability.not-viable {
  border-color: rgba(199, 115, 121, 0.35);
}

.metric.viability.not-viable .metric-value {
  background: none;
  color: var(--danger);
}

.metric.viability.marginal {
  border-color: rgba(199, 154, 72, 0.35);
}

.metric.viability.marginal .metric-value {
  background: none;
  color: var(--warning);
}

/* ============ MAIN LAYOUT ============ */

.app-main {
  display: flex;
  height: calc(100vh - 72px - 40px);
  overflow: hidden;
  background: var(--bg-primary);
}

/* ============ DAY SELECTOR ============ */

.day-mode-tabs {
  display: flex;
  gap: 2px;
  margin-bottom: 10px;
  background: #13171b;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2px;
}

.day-tab {
  flex: 1;
  padding: 7px 8px;
  border: none;
  border-radius: 4px;
  background: transparent;
  color: var(--text-muted);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color var(--transition), color var(--transition);
}

.day-tab.active {
  background: rgba(95, 127, 184, 0.18);
  color: var(--text-primary);
}

.day-tab:hover:not(.active) {
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.03);
}

.day-tab.disabled,
.day-tab:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.day-presets {
  display: flex;
  gap: 4px;
  margin: 8px 0;
}

.day-preset {
  flex: 1;
  padding: 5px 6px;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: #13171b;
  color: var(--text-secondary);
  font-size: 10px;
  cursor: pointer;
  transition: all 0.15s;
}

.day-preset:hover {
  border-color: var(--border-light);
  color: var(--text-primary);
}

.day-info {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  padding: 8px;
  background: #13171b;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-size: 10px;
  color: var(--text-muted);
}

.day-info strong {
  color: var(--text-primary);
}

/* ============ PANELS ============ */

.panel {
  width: var(--panel-width);
  min-width: var(--panel-width);
  overflow-y: auto;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  padding: 12px;
}

.results-panel {
  border-right: none;
  border-left: 1px solid var(--border);
}

/* ---- Sections (Config & Results) ---- */

.config-section,
.results-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 10px;
  overflow: hidden;
  transition: var(--transition);
}

.section-header {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  user-select: none;
  border-bottom: 1px solid transparent;
  transition: background-color var(--transition), border-color var(--transition);
}

.section-header:hover {
  background: rgba(255, 255, 255, 0.02);
}

.section-header .icon {
  display: none;
}

.section-header .chevron {
  margin-left: auto;
  font-size: 12px;
  color: var(--text-muted);
  transition: transform 0.2s;
}

.config-section:not(.open) .chevron,
.results-section:not(.open) .chevron {
  transform: rotate(-90deg);
}

.config-section.open .section-header,
.results-section.open .section-header {
  border-bottom-color: var(--border);
}

.section-body {
  padding: 12px 14px 14px;
}

.config-section:not(.open) .section-body,
.results-section:not(.open) .section-body {
  display: none;
}

/* ---- Form Controls ---- */

label {
  display: block;
  margin-bottom: 10px;
  font-size: 11px;
  color: var(--text-secondary);
  font-weight: 600;
}

select,
input[type="number"] {
  width: 100%;
  padding: 7px 8px;
  margin-top: 4px;
  background: #13171b;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-size: 12px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

select:focus,
input[type="number"]:focus {
  border-color: var(--electric);
  box-shadow: 0 0 0 1px rgba(95, 127, 184, 0.18);
}

input[type="range"] {
  width: 100%;
  margin-top: 6px;
  accent-color: var(--electric);
  height: 3px;
  -webkit-appearance: none;
  appearance: none;
  background: rgba(141, 153, 168, 0.34);
  border-radius: 999px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: var(--range-thumb-size);
  height: var(--range-thumb-size);
  border-radius: 50%;
  background: #e7ecf2;
  border: 2px solid var(--electric);
  cursor: pointer;
  box-shadow: none;
}

input[type="range"]::-moz-range-thumb {
  width: var(--range-thumb-size);
  height: var(--range-thumb-size);
  border-radius: 50%;
  background: #e7ecf2;
  border: 2px solid var(--electric);
  cursor: pointer;
  box-shadow: none;
}

input[type="range"]::-moz-range-track {
  height: 3px;
  background: rgba(141, 153, 168, 0.34);
  border-radius: 999px;
  border: none;
}

.range-input-wrap {
  position: relative;
  margin-top: 3px;
  padding-top: 18px;
  overflow: visible;
}

.range-input-wrap input[type="range"] {
  position: relative;
  z-index: 2;
  margin-top: 0;
}

.slider-markers {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 16px;
  overflow: visible;
  pointer-events: none;
  z-index: 4;
}

.slider-marker {
  -webkit-appearance: none;
  appearance: none;
  position: absolute;
  top: 0;
  transform: translateX(-50%);
  width: 7px;
  height: 7px;
  margin: 0;
  padding: 0;
  border: 1px solid var(--bg-card);
  border-radius: 999px;
  background: #8d99a8;
  box-shadow: none;
  cursor: pointer;
  pointer-events: auto;
  transition: transform var(--transition), box-shadow var(--transition), background var(--transition);
}

.slider-marker::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 7px;
  width: 1px;
  height: 10px;
  transform: translateX(-50%);
  background: rgba(141, 153, 168, 0.5);
}

.slider-marker:hover,
.slider-marker:focus-visible {
  transform: translateX(-50%) scale(1.06);
  background: #d2dae4;
  box-shadow: none;
  outline: none;
}

.slider-hover-tooltip {
  position: fixed;
  left: 0;
  top: 0;
  z-index: 9999;
  opacity: 0;
  transform: translateY(4px);
  pointer-events: none;
  max-width: min(260px, calc(100vw - 16px));
  padding: 4px 6px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #14181d;
  color: var(--text-primary);
  font-size: 10px;
  font-weight: 500;
  white-space: nowrap;
  box-shadow: var(--shadow);
  transition: opacity var(--transition), transform var(--transition);
}

.slider-hover-tooltip.visible {
  opacity: 1;
  transform: translateY(0);
}

.slider-marker-tooltip {
  position: absolute;
  left: 50%;
  bottom: calc(100% + 8px);
  transform: translate(-50%, 6px);
  opacity: 0;
  pointer-events: none;
  padding: 4px 6px;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: #14181d;
  color: var(--text-primary);
  font-size: 10px;
  font-weight: 500;
  white-space: nowrap;
  box-shadow: var(--shadow);
  transition: opacity var(--transition), transform var(--transition);
}

.range-value {
  display: block;
  text-align: right;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 2px;
  font-variant-numeric: tabular-nums;
}

.input-row {
  display: flex;
  gap: 8px;
}

.input-row label {
  flex: 1;
}

.field-note {
  margin-top: -2px;
  margin-bottom: 8px;
  font-size: 10px;
  color: var(--text-muted);
  line-height: 1.45;
}

.compact-note {
  margin-top: 0;
}

.field-note a {
  color: var(--electric);
  text-decoration: none;
}

.field-note a:hover {
  text-decoration: underline;
}

.info-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 0;
  font-size: 11px;
  color: var(--text-secondary);
  border-top: 1px solid var(--border);
  margin-top: 4px;
}

.info-row:first-of-type {
  margin-top: 8px;
}

.highlight {
  font-weight: 600;
  color: var(--text-primary);
  font-variant-numeric: tabular-nums;
}

/* ---- Toggle ---- */

.toggle-label {
  display: flex !important;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  font-size: 12px !important;
  color: var(--text-primary) !important;
  font-weight: 600 !important;
  margin-bottom: 8px;
}

.toggle-label input[type="checkbox"] {
  width: 16px;
  height: 16px;
  accent-color: var(--electric);
  cursor: pointer;
}

.disabled-group {
  opacity: 0.4;
  pointer-events: none;
  transition: opacity var(--transition);
}

.disabled-group.active {
  opacity: 1;
  pointer-events: auto;
}

/* ---- Process Cards ---- */

.process-card {
  background: #13171b;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 11px;
  margin-bottom: 8px;
  transition: var(--transition);
}

.process-card:hover {
  border-color: var(--border-light);
  background: #151a1f;
}

.process-header {
  margin-bottom: 0;
}

.process-config {
  margin-top: 6px;
  padding-top: 6px;
  border-top: 1px solid var(--border);
}

.process-config.disabled-group {
  display: none;
}

.process-config.disabled-group.active {
  display: block;
}

.product-mix-card {
  border-style: solid;
  background: rgba(19, 23, 27, 0.92);
}

.product-mix-card .module-note-title {
  margin-bottom: 6px;
}

.product-mix-card .field-note {
  margin-bottom: 0;
}

.module-group {
  margin-bottom: 10px;
}

.module-group:last-child {
  margin-bottom: 0;
}

.module-group-title,
.module-family-title {
  font-size: 10px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.module-group-subtitle {
  font-size: 10px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.module-family {
  margin-bottom: 10px;
}

.module-family:last-child {
  margin-bottom: 0;
}

.process-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.maturity-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 6px;
  border-radius: 999px;
  font-size: 9px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.4px;
}

.maturity-badge.supported {
  background: rgba(126, 169, 109, 0.12);
  color: #93ba86;
  border: 1px solid rgba(126, 169, 109, 0.2);
}

.maturity-badge.exploratory {
  background: rgba(141, 153, 168, 0.12);
  color: var(--text-secondary);
  border: 1px solid rgba(141, 153, 168, 0.22);
}

.exploratory-card {
  border-style: dashed;
}

.missing-assumptions {
  margin-top: 8px;
  padding: 8px;
  border-radius: 6px;
  background: rgba(141, 153, 168, 0.06);
  border: 1px solid var(--border);
}

.module-note-title {
  font-size: 10px;
  font-weight: 700;
  color: var(--text-secondary);
  margin-bottom: 4px;
}

.missing-list {
  margin-left: 14px;
  color: var(--text-muted);
  font-size: 10px;
}

.missing-list li {
  margin-bottom: 3px;
}

.coverage-note {
  margin-top: -2px;
  margin-bottom: 6px;
  padding: 0 10px 2px;
  font-size: 10px;
  color: var(--text-muted);
}

/* ============ DIAGRAM AREA ============ */

.diagram-area {
  flex: 1 1 auto;
  min-width: 0;
  min-height: 0;
  padding: 14px;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.diagram-area > .diagram-container,
.diagram-area > .chart-section {
  flex: 0 0 auto;
}

.diagram-container {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  min-height: 360px;
  height: auto;
  position: relative;
  overflow: hidden;
}

.diagram-container svg {
  width: 100%;
  height: auto;
  display: block;
}

.chart-section {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 14px;
}

.chart-section h3 {
  font-size: 12px;
  font-weight: 600;
  margin-bottom: 8px;
  color: var(--text-primary);
}

.site-map-section {
  padding: 14px;
}

.site-map-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 6px;
}

.site-map-header h3 {
  margin-bottom: 0;
}

.site-map-metrics {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: flex-end;
  font-size: 10px;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.site-map-metrics span {
  padding: 4px 8px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: rgba(19, 23, 27, 0.9);
}

.site-map-shell {
  position: relative;
  min-height: 300px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  background: #0f1215;
}

.site-map {
  height: 300px;
  width: 100%;
}

.site-map-empty {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px;
  text-align: center;
  color: var(--text-secondary);
  background: #11161a;
}

.site-map-empty[hidden] {
  display: none;
}

.site-map-footprints {
  position: absolute;
  top: 10px;
  left: 10px;
  z-index: 450;
  width: fit-content;
  max-width: calc(100% - 20px);
  padding: 10px;
  border: 1px solid rgba(70, 81, 93, 0.85);
  border-radius: 10px;
  background: rgba(10, 14, 23, 0.78);
  box-shadow: 0 14px 30px rgba(0, 0, 0, 0.32);
  backdrop-filter: blur(10px);
  pointer-events: none;
}

.site-map-footprints[hidden] {
  display: none;
}

.site-map-schematic {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.site-map-schematic-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.site-map-schematic-canvas {
  position: relative;
  overflow: hidden;
}

.site-map-schematic-total {
  position: absolute;
  inset: 0;
  border: 1.5px solid var(--footprint-color, rgba(255, 255, 255, 0.45));
  border-radius: 6px;
  background:
    linear-gradient(var(--footprint-fill, rgba(255, 255, 255, 0.12)), var(--footprint-fill, rgba(255, 255, 255, 0.12))),
    repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.02) 0 9px, rgba(255, 255, 255, 0.07) 9px 10px),
    repeating-linear-gradient(90deg, rgba(255, 255, 255, 0.02) 0 17px, rgba(255, 255, 255, 0.06) 17px 18px);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.04);
}

.site-map-schematic-plant-pad {
  position: absolute;
  border: 1px dashed rgba(255, 255, 255, 0.18);
  border-radius: 6px;
  background: rgba(11, 15, 23, 0.22);
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.03);
}

.site-map-schematic-module {
  position: absolute;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--footprint-color, rgba(255, 255, 255, 0.45));
  border-radius: 4px;
  background: var(--footprint-fill, rgba(255, 255, 255, 0.18));
  color: #f8fafc;
  font-weight: 700;
  line-height: 1;
  letter-spacing: 0.02em;
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.45);
  box-shadow:
    inset 0 0 0 1px rgba(255, 255, 255, 0.05),
    0 4px 10px rgba(0, 0, 0, 0.18);
}

.site-map-schematic-solar-label {
  position: absolute;
  right: 8px;
  bottom: 8px;
  padding: 3px 7px;
  border-radius: 999px;
  background: rgba(10, 14, 23, 0.58);
  color: rgba(238, 242, 246, 0.82);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.02em;
}

.site-map-schematic-meta {
  font-size: 10px;
  color: var(--text-secondary);
  font-variant-numeric: tabular-nums;
}

.site-map-shell .leaflet-container {
  background: #0f1215;
  font: inherit;
}

.site-map-shell .leaflet-control-attribution {
  background: rgba(10, 14, 23, 0.82);
  color: var(--text-muted);
}

.site-map-shell .leaflet-control-attribution a {
  color: var(--text-secondary);
}

.site-map-shell .leaflet-bar a {
  background: rgba(17, 24, 39, 0.92);
  color: var(--text-primary);
  border-bottom-color: var(--border);
}

.site-map-shell .leaflet-bar a:hover {
  background: var(--bg-card-hover);
}

.chart-wrapper {
  position: relative;
  height: 180px;
}

.chart-wrapper canvas {
  width: 100% !important;
  height: 100% !important;
}

/* ============ PLANT SCORE ============ */

.plant-score-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 12px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  margin-bottom: 10px;
  transition: border-color 0.3s ease, background-color 0.3s ease;
}

.score-ring-wrap {
  position: relative;
  width: 64px;
  height: 64px;
  flex-shrink: 0;
}

.score-ring {
  width: 64px;
  height: 64px;
}

.score-ring circle:last-child {
  transition: stroke-dashoffset 0.8s ease, stroke 0.4s ease;
}

.score-number {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  font-weight: 800;
  font-variant-numeric: tabular-nums;
  color: var(--text-primary);
}

.score-details {
  flex: 1;
  min-width: 0;
}

.score-title {
  font-size: 12px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 0.02em;
  margin-bottom: 4px;
}

.score-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  padding: 2px 6px;
  border-radius: 999px;
  font-size: 10px;
  font-weight: 600;
  border: 1px solid transparent;
}

.badge.gold {
  background: rgba(199, 154, 72, 0.12);
  color: #d2b06a;
  border-color: rgba(199, 154, 72, 0.22);
}

.badge.green {
  background: rgba(126, 169, 109, 0.12);
  color: #9ac38f;
  border-color: rgba(126, 169, 109, 0.22);
}

.badge.blue {
  background: rgba(95, 127, 184, 0.12);
  color: #9bb4de;
  border-color: rgba(95, 127, 184, 0.24);
}

.badge.red {
  background: rgba(199, 115, 121, 0.12);
  color: #d79aa0;
  border-color: rgba(199, 115, 121, 0.22);
}

.badge.purple {
  background: rgba(140, 132, 180, 0.12);
  color: #b2abd8;
  border-color: rgba(140, 132, 180, 0.22);
}

/* ============ RESULTS ============ */

.production-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 6px;
}

.production-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 9px 10px;
  background: #13171b;
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.production-item .prod-label {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: var(--text-secondary);
}

.production-item .prod-icon {
  display: none;
}

.production-item .prod-dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--text-muted);
  flex-shrink: 0;
}

.production-item .prod-value {
  font-size: 13px;
  font-weight: 650;
  font-variant-numeric: tabular-nums;
}

.production-item .prod-unit {
  font-size: 10px;
  color: var(--text-muted);
  font-weight: 500;
  margin-left: 4px;
}

.production-item.h2 .prod-dot { background: var(--h2); }
.production-item.co2 .prod-dot { background: var(--co2); }
.production-item.ch4 .prod-dot { background: var(--methane); }
.production-item.electric .prod-dot { background: var(--electric); }
.production-item.solar .prod-dot { background: var(--solar); }
.production-item.fuel .prod-dot { background: var(--fuel); }
.production-item.ammonia .prod-dot { background: var(--ammonia); }

.production-item.h2 .prod-value { color: var(--h2); }
.production-item.co2 .prod-value { color: var(--co2); }
.production-item.ch4 .prod-value { color: var(--methane); }
.production-item.electric .prod-value { color: var(--electric); }
.production-item.solar .prod-value { color: var(--solar); }
.production-item.fuel .prod-value { color: var(--fuel); }
.production-item.ammonia .prod-value { color: var(--ammonia); }

/* ---- Economics Breakdown ---- */

.econ-breakdown {
  display: grid;
  grid-template-columns: 1fr;
  gap: 4px;
}

.econ-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 5px 8px;
  font-size: 11px;
  border-radius: 4px;
}

.econ-row.header {
  font-weight: 700;
  color: var(--text-primary);
  font-size: 12px;
  background: var(--bg-primary);
  margin-top: 6px;
}

.econ-row.header:first-child {
  margin-top: 0;
}

.econ-row .econ-label {
  color: var(--text-secondary);
}

.econ-row .econ-value {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
  color: var(--text-primary);
}

.econ-row.positive .econ-value { color: var(--success); }
.econ-row.negative .econ-value { color: var(--danger); }

.econ-row.total {
  font-weight: 700;
  font-size: 12px;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  margin-top: 4px;
}

/* ============ DIAGRAM SVG STYLES ============ */

.node-group {
  cursor: default;
}

.node-bg {
  rx: 10;
  ry: 10;
  transition: all 0.2s;
}

.node-group:hover .node-bg {
  filter: brightness(1.15);
}

.node-title {
  font-size: 11px;
  font-weight: 700;
  fill: var(--text-primary);
  font-family: inherit;
}

.node-value {
  font-size: 10px;
  font-weight: 600;
  font-family: inherit;
}

.node-subtitle {
  font-size: 9px;
  fill: var(--text-muted);
  font-family: inherit;
}

.node-icon {
  font-size: 22px;
}

.flow-line {
  stroke-width: 2.5;
  fill: none;
  stroke-dasharray: 6 4;
  animation: flowDash 1.5s linear infinite;
}

.flow-line.thick {
  stroke-width: 4;
  stroke-dasharray: 8 4;
}

.flow-line.inactive {
  opacity: 0.15;
  animation: none;
}

.flow-label {
  font-size: 9px;
  font-weight: 600;
  font-family: inherit;
}

@keyframes flowDash {
  to { stroke-dashoffset: -20; }
}

@keyframes pulse {
  0%, 100% { opacity: 0.7; }
  50% { opacity: 1; }
}

.pulse {
  animation: pulse 2s ease-in-out infinite;
}

/* ============ FOOTER ============ */

.app-footer {
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0 18px;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  font-size: 10px;
  color: var(--text-muted);
  flex-shrink: 0;
}

.app-footer a {
  color: var(--electric);
  text-decoration: none;
}

.app-footer a:hover {
  text-decoration: underline;
}

/* ============ RESPONSIVE ============ */

@media (max-width: 1200px) {
  :root {
    --panel-width: 300px;
  }

  .header-left h1 {
    font-size: 16px;
  }

  .metric {
    min-width: 82px;
    padding: 7px 8px;
  }

  .metric-value {
    font-size: 13px;
  }
}

@media (max-width: 900px) {
  .app-main {
    flex-direction: column;
    height: auto;
    overflow-y: auto;
  }

  .panel {
    width: 100%;
    min-width: unset;
    border-right: none;
    border-left: none;
    border-bottom: 1px solid var(--border);
  }

  .header-metrics {
    display: none;
  }
}