/* GLL Viewer Styles */

:root {
  --primary: #2563eb;
  --primary-dark: #1d4ed8;
  --bg: #f8fafc;
  --card-bg: #ffffff;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --success: #22c55e;
  --error: #ef4444;
  --warning: #f59e0b;
  --drop-zone-hover: #eff6ff;
  --card-hover: #f8fafc;
  --geometry-bg-start: #f8fafc;
  --geometry-bg-end: #eef2f7;
  --balloon-legend-bg: rgba(255, 255, 255, 0.85);
  --geom-grid-major: #94a3b8;
  --geom-grid-minor: #e2e8f0;
  --geom-grid-opacity: 0.45;
  --geom-edge-default: #475569;
  --geom-face-default: #60a5fa;
}

[data-theme="dark"] {
  --primary: #60a5fa;
  --primary-dark: #3b82f6;
  --bg: #0f172a;
  --card-bg: #1e293b;
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --border: #334155;
  --success: #4ade80;
  --error: #f87171;
  --warning: #fbbf24;
  --drop-zone-hover: #1e293b;
  --card-hover: #334155;
  --geometry-bg-start: #1e293b;
  --geometry-bg-end: #334155;
  --balloon-legend-bg: rgba(30, 41, 59, 0.85);
  --geom-grid-major: #94a3b8;
  --geom-grid-minor: #64748b;
  --geom-grid-opacity: 0.5;
  --geom-edge-default: #cbd5e1;
  --geom-face-default: #93c5fd;
}

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

body {
  font-family:
    -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu,
    sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  min-height: 100vh;
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 2rem 1rem;
}

/* Header */
header {
  text-align: center;
  margin-bottom: 2rem;
  position: relative;
}

header h1 {
  font-size: 2.5rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.5rem;
}

.subtitle {
  color: var(--text-muted);
  font-size: 1.1rem;
}

/* Theme Toggle */
.theme-toggle {
  position: absolute;
  top: 0;
  right: 0;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  transition: all 0.2s ease;
}

.theme-toggle:hover {
  background: var(--drop-zone-hover);
  color: var(--text);
}

.theme-toggle-icon {
  width: 20px;
  height: 20px;
}

.theme-toggle-label {
  display: none;
}

@media (min-width: 768px) {
  .theme-toggle-label {
    display: inline;
  }
}

/* Drop Zone */
.drop-zone {
  border: 2px dashed var(--border);
  border-radius: 12px;
  padding: 3rem 2rem;
  text-align: center;
  background: var(--card-bg);
  cursor: pointer;
  transition: all 0.2s ease;
}

.drop-zone:hover,
.drop-zone.drag-over {
  border-color: var(--primary);
  background: var(--drop-zone-hover);
}

.drop-zone-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.drop-icon {
  width: 48px;
  height: 48px;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.drop-zone:hover .drop-icon {
  color: var(--primary);
}

.drop-hint {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Loading */
.loading {
  text-align: center;
  padding: 3rem;
}

.spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border);
  border-top-color: var(--primary);
  border-radius: 50%;
  margin: 0 auto 1rem;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* Error */
.error {
  background: #fef2f2;
  border: 1px solid #fecaca;
  border-radius: 8px;
  padding: 1rem;
  color: var(--error);
  margin: 1rem 0;
}

/* Results */
.results {
  margin-top: 2rem;
}

.file-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 1rem;
}

.file-header h2 {
  font-size: 1.5rem;
  font-weight: 600;
}


.frequency-slider {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex: 1;
}

.frequency-slider input[type="range"] {
  flex: 1;
  min-width: 150px;
}

.frequency-value {
  font-family: "SF Mono", "Monaco", "Inconsolata", "Fira Code", monospace;
  font-size: 0.875rem;
  color: var(--text);
  font-weight: 500;
  min-width: 65px;
  text-align: right;
}

.normalize-toggle {
  cursor: pointer;
  user-select: none;
}

.normalize-toggle input[type="checkbox"] {
  margin-right: 0.35rem;
  cursor: pointer;
}

.btn-clear {
  padding: 0.5rem 1rem;
  background: var(--text-muted);
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.875rem;
}

.btn-clear:hover {
  background: var(--text);
}

/* Tabs */
.tabs {
  display: flex;
  gap: 0.25rem;
  border-bottom: 2px solid var(--border);
  margin-bottom: 1.5rem;
  overflow-x: auto;
  overflow-y: hidden;
}

.tab {
  padding: 0.75rem 1.25rem;
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  cursor: pointer;
  font-size: 0.9375rem;
  font-weight: 500;
  color: var(--text-muted);
  white-space: nowrap;
  transition: all 0.2s ease;
}

.tab:hover {
  color: var(--text);
}

.tab.active {
  color: var(--primary);
  border-bottom-color: var(--primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Cards */
.card {
  background: var(--card-bg);
  border-radius: 8px;
  border: 1px solid var(--border);
  padding: 1.5rem;
  margin-bottom: 1rem;
}

.card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 1rem;
  color: var(--text);
}

/* Collapsible Cards */
.card-collapsible {
  padding: 0;
}

.card-collapsible .card-header {
  display: flex;
  align-items: center;
  padding: 1rem 1.5rem;
  margin: 0;
  cursor: pointer;
  user-select: none;
  transition: background-color 0.15s ease;
}

.card-collapsible .card-header:hover {
  background: var(--card-hover);
}

.card-collapsible.collapsed .card-header {
  border-radius: 8px;
}

.card-toggle {
  margin-right: 0.75rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  transition: transform 0.2s ease;
  width: 1rem;
}

.card-collapsible.collapsed .card-toggle {
  transform: rotate(-90deg);
}

.card-count {
  margin-left: auto;
  font-size: 0.75rem;
  font-weight: 400;
  color: var(--text-muted);
  background: var(--border);
  padding: 0.125rem 0.5rem;
  border-radius: 10px;
}

.card-count:empty {
  display: none;
}

.card-body {
  padding: 0 1.5rem 1.5rem;
  border-top: 1px solid var(--border);
}

.card-collapsible.collapsed .card-body {
  display: none;
}

/* Info Tables */
.info-table {
  width: 100%;
  border-collapse: collapse;
}

.info-table tr {
  border-bottom: 1px solid var(--border);
}

.info-table tr:last-child {
  border-bottom: none;
}

.info-table th,
.info-table td {
  padding: 0.75rem 0;
  text-align: left;
}

.info-table th {
  font-weight: 500;
  color: var(--text-muted);
  width: 40%;
}

.info-table td {
  font-family: "SF Mono", Monaco, "Cascadia Code", monospace;
  font-size: 0.9375rem;
  word-break: break-word;
}

/* Source Cards */
.source-card {
  background: var(--geometry-bg-start);
  border-radius: 6px;
  padding: 1rem;
  margin-bottom: 0.75rem;
}

.source-card:last-child {
  margin-bottom: 0;
}

.source-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.source-title {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.source-header-toggle {
  cursor: pointer;
  user-select: none;
}

.source-toggle {
  margin-right: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  width: 1rem;
}

.source-label {
  font-weight: 600;
  font-size: 1rem;
}

.source-key {
  font-family: monospace;
  font-size: 0.75rem;
  background: var(--border);
  padding: 0.125rem 0.5rem;
  border-radius: 4px;
  color: var(--text-muted);
}

.source-details {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.source-detail {
  display: flex;
  gap: 0.5rem;
}

.source-detail strong {
  color: var(--text);
}

.source-section {
  margin-top: 0.75rem;
}

.source-section-title {
  margin: 0 0 0.4rem;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text-muted);
}

.source-section--left,
.source-section--right {
  display: flex;
  flex-direction: column;
}

.source-section-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: flex-start;
}

.source-section-row .source-section {
  flex: 1 1 280px;
  margin-top: 0;
}

.source-content {
  margin-top: 0.5rem;
}

.source-plot-tabs {
  margin-top: 0.75rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.source-plot-tab {
  border: 1px solid var(--border);
  background: var(--geometry-bg-start);
  color: var(--text);
  border-radius: 999px;
  padding: 0.3rem 0.85rem;
  font-size: 0.85rem;
  cursor: pointer;
}

.source-plot-tab.active {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}

.source-plot-tab:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.source-plot-panel {
  display: none;
  margin-top: 0.75rem;
}

.source-plot-panel.active {
  display: block;
}

.source-polar-controls,
.source-impedance-controls {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 0.75rem;
}

.source-polar-controls label,
.source-impedance-controls label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.source-polar-chart,
.source-impedance-chart {
  height: 640px;
  margin-bottom: 0.75rem;
}

.source-balloon-controls {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.source-balloon-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.source-response {
  margin-top: 0.75rem;
  border-top: 1px solid var(--border);
  padding-top: 0.75rem;
}

.source-response-chart {
  height: 360px;
  margin-bottom: 1rem;
}

.source-placements {
  margin-top: 0.75rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg);
  padding: 0.5rem 0.75rem;
}

.source-placements summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--text);
  list-style: none;
}

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

.source-placement-grid {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
  margin-top: 0.5rem;
}

.source-placement-row {
  display: grid;
  grid-template-columns: minmax(140px, 1.2fr) minmax(140px, 1fr) minmax(140px, 1fr) minmax(140px, 1fr);
  gap: 0.5rem;
  padding: 0.35rem 0;
  border-bottom: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.82rem;
}

.source-placement-row--head {
  font-weight: 600;
  color: var(--text);
}

.source-placement-row:last-child {
  border-bottom: none;
}

@media (max-width: 900px) {
  .source-placement-row {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* Response Controls */
.response-controls {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.response-controls-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.response-controls label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.combined-controls {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.combined-controls-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.combined-controls label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.combined-controls select,
.combined-controls input {
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.875rem;
  min-width: 150px;
}

.response-controls .source-selector {
  display: none;
}

.response-controls .response-toggle {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.response-controls .response-toggle input {
  margin: 0;
}

.response-controls select {
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.875rem;
  min-width: 150px;
}

.response-controls .response-slider {
  flex: 1 1 240px;
  gap: 0.75rem;
}

.response-controls .response-slider input[type="range"] {
  flex: 1;
  accent-color: var(--primary);
  min-width: 140px;
}

.response-controls .angle-value {
  min-width: 64px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
}

/* Filter Response Controls */
.filter-response-controls {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.filter-response-controls label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.filter-response-controls select {
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.875rem;
  min-width: 180px;
}

/* Polar Controls */
.polar-controls {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.polar-controls label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.polar-controls select {
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.875rem;
  min-width: 180px;
}

.polar-controls .polar-slider {
  flex: 1 1 280px;
  gap: 0.75rem;
}

.polar-controls .polar-slider input[type="range"] {
  flex: 1;
  accent-color: var(--primary);
  min-width: 160px;
}

.polar-controls .frequency-value {
  min-width: 70px;
  text-align: right;
  font-variant-numeric: tabular-nums;
  color: var(--text-muted);
}

/* Balloon Controls */
.balloon-controls {
  display: flex;
  gap: 1rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.balloon-controls label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.balloon-controls-row {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
  width: 100%;
}

.balloon-controls select {
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.875rem;
  min-width: 180px;
}

.balloon-controls .balloon-slider {
  flex: 0 1 160px;
  gap: 0.75rem;
}

.balloon-controls .balloon-slider input[type="range"] {
  flex: 1;
  accent-color: var(--primary);
  min-width: 80px;
}

.balloon-controls .balloon-toggle {
  gap: 0.5rem;
}

/* Geometry Controls (legacy, kept for reference) */
.geometry-controls select {
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.875rem;
  min-width: 180px;
}

.geometry-controls .geometry-toggle {
  gap: 0.5rem;
}

/* Geometry Viewer */
.geometry-viewer {
  height: 735px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: linear-gradient(
    135deg,
    var(--geometry-bg-start),
    var(--geometry-bg-end)
  );
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-bottom: 1rem;
  position: relative;
}

.geometry-viewer canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Inline Geometry Viewer (per box type / frame) */
.inline-geometry-viewer {
  margin-top: 0.75rem;
}

.inline-geometry-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.inline-geometry-controls {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.inline-geometry-controls .geometry-toggle {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8125rem;
}

.inline-geometry-legend {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-left: auto;
  justify-content: flex-end;
}

.inline-geometry-legend .geometry-toggle {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.8125rem;
}

.geom-legend-swatch {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
  border: 1px solid rgba(0, 0, 0, 0.15);
}

.geom-legend-swatch.swatch-ref {
  background: #ef4444;
}

.geom-legend-swatch.swatch-com {
  background: #22c55e;
}

.geom-legend-swatch.swatch-pivot {
  background: #f59e0b;
}

.inline-geometry-canvas {
  height: 560px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: linear-gradient(
    135deg,
    var(--geometry-bg-start),
    var(--geometry-bg-end)
  );
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.inline-geometry-canvas canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.array-geometry-viewer .inline-geometry-canvas {
  height: 520px;
}

/* Balloon Viewer */
.balloon-viewer {
  height: 460px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: linear-gradient(
    135deg,
    var(--geometry-bg-start),
    var(--geometry-bg-end)
  );
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  margin-bottom: 1rem;
  position: relative;
}

.balloon-viewer canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.balloon-legend {
  position: absolute;
  right: 14px;
  bottom: 14px;
  background: var(--balloon-legend-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.5rem 0.75rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  min-width: 110px;
  pointer-events: none;
}

.balloon-legend-title {
  font-weight: 600;
  color: var(--text);
}

.balloon-legend-bar {
  height: 10px;
  border-radius: 999px;
  background: linear-gradient(
    90deg,
    #1d4ed8 0%,
    #38bdf8 35%,
    #facc15 70%,
    #ef4444 100%
  );
}

.balloon-legend-labels {
  display: flex;
  justify-content: space-between;
}

/* Chart Container */
#response-chart-container {
  height: 400px;
  margin-bottom: 1rem;
}

#combined-response-chart-container {
  height: 360px;
  margin-bottom: 1rem;
}

#filter-response-chart-container {
  height: 360px;
  margin-bottom: 1rem;
  position: relative;
}

#filter-response-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(248, 250, 252, 0.85);
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 1.5rem;
}

#polar-chart-container {
  height: 420px;
  margin-bottom: 1rem;
}

/* Response Metadata */
.response-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.response-meta .chip {
  background: var(--geometry-bg-start);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.25rem 0.75rem;
  color: var(--text);
}

/* Config Lists */
.config-item {
  padding: 0.75rem;
  background: var(--geometry-bg-start);
  border-radius: 6px;
  margin-bottom: 0.5rem;
}

.config-item:last-child {
  margin-bottom: 0;
}

.config-item-header {
  font-weight: 600;
  margin: 0;
}

.config-item-header-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.25rem;
}

.config-item-actions {
  margin-left: auto;
  display: flex;
  justify-content: flex-end;
}

.config-item-detail {
  font-size: 0.875rem;
  color: var(--text-muted);
}

/* Filter Groups - Expandable */
.filter-group {
  background: var(--geometry-bg-start);
  border-radius: 6px;
  margin-bottom: 0.5rem;
  overflow: hidden;
}

.filter-group.expanded {
  background: var(--geometry-bg-end);
}

.filter-group-header {
  display: flex;
  align-items: center;
  padding: 0.75rem;
  cursor: pointer;
  user-select: none;
}

.filter-group-header:hover {
  background: var(--border);
}

.filter-group-toggle {
  margin-right: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  width: 1rem;
}

.filter-group-title {
  font-weight: 600;
  flex: 1;
}

.filter-group-meta {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.filter-group-content {
  padding: 0 0.75rem 0.75rem;
  border-top: 1px solid var(--border);
}

.filter-group-key {
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: 0.5rem 0;
}

.filter-group-response {
  background: var(--geometry-bg-start);
  border-radius: 6px;
  border: 1px solid var(--border);
  padding: 0.75rem;
  margin-bottom: 0.75rem;
}

.filter-response-chart-container {
  height: 320px;
  margin-bottom: 0.75rem;
  position: relative;
}

.filter-response-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(248, 250, 252, 0.85);
  border: 1px dashed var(--border);
  border-radius: 8px;
  padding: 1.25rem;
}

/* Filter Definition */
.filter-definition {
  background: var(--card-bg);
  border-radius: 4px;
  padding: 0.5rem;
  margin-top: 0.5rem;
  border: 1px solid var(--border);
}

.filter-def-header {
  font-weight: 500;
  font-size: 0.875rem;
  margin-bottom: 0.25rem;
}

.filter-def-key {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

/* Filter Bank */
.filter-bank {
  margin-top: 0.5rem;
}

.filter-bank-header {
  font-size: 0.75rem;
  color: var(--text-muted);
  padding: 0.25rem 0;
  border-bottom: 1px dashed var(--border);
  margin-bottom: 0.5rem;
}

.filter-bank-gain {
  font-weight: 500;
}

.filter-flags {
  color: var(--warning);
}

/* Filter Chain */
.filter-chain {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
}

.filter-item {
  background: var(--geometry-bg-start);
  border-radius: 4px;
  padding: 0.375rem 0.5rem;
  border-left: 3px solid var(--text-muted);
}

.filter-kind-iir {
  border-left-color: #3b82f6;
}

.filter-kind-fir {
  border-left-color: #10b981;
}

.filter-kind-logspectrum {
  border-left-color: #8b5cf6;
}

.filter-item-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}

.filter-kind-badge {
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  background: #e2e8f0;
  padding: 0.125rem 0.375rem;
  border-radius: 3px;
}

.filter-kind-iir .filter-kind-badge {
  background: #dbeafe;
  color: #1d4ed8;
}

.filter-kind-fir .filter-kind-badge {
  background: #d1fae5;
  color: #047857;
}

.filter-kind-logspectrum .filter-kind-badge {
  background: #ede9fe;
  color: #6d28d9;
}

.filter-label {
  font-size: 0.8125rem;
  font-weight: 500;
}

.filter-item-params {
  font-size: 0.75rem;
  color: var(--text-muted);
  line-height: 1.4;
}

.filter-empty {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-style: italic;
  padding: 0.25rem 0;
}

/* Resources */
.resource-item {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  padding: 0.75rem;
  background: var(--geometry-bg-start);
  border-radius: 6px;
  margin-bottom: 0.5rem;
}

.resource-item--image {
  flex-direction: column;
  gap: 0.75rem;
}

.resource-meta {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.resource-item:not(.resource-item--image):not(.resource-item--doc)
  .resource-meta {
  flex-direction: row;
  align-items: center;
  gap: 0.75rem;
}

.resource-name {
  font-weight: 500;
}

.resource-info {
  display: flex;
  gap: 1rem;
  font-size: 0.875rem;
  color: var(--text-muted);
}

.resource-type {
  background: var(--primary);
  color: white;
  padding: 0.125rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 500;
}

.resource-preview {
  width: 100%;
  padding: 0.5rem;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.resource-preview img {
  max-width: 100%;
  max-height: 240px;
  object-fit: contain;
  border-radius: 4px;
}

/* Document Resources */
.resource-item--doc {
  flex-direction: row;
  align-items: center;
}

.resource-item--doc .resource-meta {
  flex-direction: row;
  align-items: center;
  gap: 0.75rem;
}

.resource-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.resource-details {
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.resource-label {
  font-weight: 600;
  color: var(--text);
}

.resource-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

.resource-size {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-variant-numeric: tabular-nums;
}

.btn-download {
  background: var(--primary);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s ease;
}

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

/* Dropdown Container for Geometry Export */
.dropdown-container {
  position: relative;
  display: inline-block;
}

.btn-geom-export {
  background: var(--primary);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.2s ease;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.btn-geom-export:hover {
  background: var(--primary-dark);
}

.dropdown-icon {
  font-size: 0.625rem;
  transition: transform 0.2s ease;
}

.dropdown-container.show .dropdown-icon {
  transform: rotate(180deg);
}

.dropdown-menu {
  position: absolute;
  top: calc(100% + 0.25rem);
  right: 0;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  min-width: 160px;
  z-index: 1000;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px);
  transition:
    opacity 0.15s ease,
    transform 0.15s ease,
    visibility 0.15s;
}

.dropdown-container.show .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: block;
  width: 100%;
  padding: 0.625rem 0.875rem;
  background: none;
  border: none;
  text-align: left;
  font-size: 0.875rem;
  color: var(--text);
  cursor: pointer;
  transition: background 0.1s ease;
  white-space: nowrap;
}

.dropdown-item:first-child {
  border-radius: 6px 6px 0 0;
}

.dropdown-item:last-child {
  border-radius: 0 0 6px 6px;
}

.dropdown-item:only-child {
  border-radius: 6px;
}

.dropdown-item:hover {
  background: var(--drop-zone-hover);
}

.dropdown-item:active {
  background: var(--border);
}

.section-hint {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

/* Empty State */
.empty-state {
  text-align: center;
  padding: 2rem;
  color: var(--text-muted);
}

/* Footer */
footer {
  text-align: center;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.875rem;
}

footer a {
  color: var(--primary);
  text-decoration: none;
}

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

.disclaimer {
  margin-top: 0.5rem;
  font-size: 0.75rem;
}

/* Utility */
.hidden {
  display: none !important;
}

/* Configuration Editor */
.config-editor-toolbar {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
  align-items: center;
}

.cfg-frame-select {
  padding: 0.375rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  background: var(--bg-card);
  color: var(--text);
  font-size: 0.8125rem;
  max-width: 12rem;
}

.btn-small {
  padding: 0.375rem 0.75rem;
  background: var(--text-muted);
  color: white;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  font-size: 0.8125rem;
}

.btn-small:hover {
  background: var(--text);
}

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

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

.btn-secondary {
  background: transparent;
  color: var(--text-muted);
  border: 1px solid var(--border);
}

.btn-secondary:hover {
  background: var(--card-hover);
  color: var(--text);
}

.config-editor-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8125rem;
}

.config-editor-table th {
  text-align: left;
  padding: 0.375rem 0.5rem;
  border-bottom: 2px solid var(--border);
  color: var(--text-muted);
  font-weight: 600;
  white-space: nowrap;
}

.config-editor-table td {
  padding: 0.25rem 0.25rem;
  border-bottom: 1px solid var(--border);
}

.config-editor-table input[type="number"] {
  width: 5rem;
  padding: 0.25rem 0.375rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.8125rem;
}

.config-editor-table select {
  max-width: 12rem;
  padding: 0.25rem 0.375rem;
  border: 1px solid var(--border);
  border-radius: 4px;
  background: var(--bg);
  color: var(--text);
  font-size: 0.8125rem;
}

.config-editor-table .btn-remove {
  padding: 0.125rem 0.5rem;
  background: transparent;
  color: var(--error);
  border: 1px solid var(--error);
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.75rem;
}

.config-editor-table .btn-remove:hover {
  background: var(--error);
  color: white;
}

/* Computing overlay */
.sim-computing {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  background: var(--primary-light, rgba(37, 99, 235, 0.08));
  border: 1px solid var(--primary, #2563eb);
  border-radius: 8px;
  margin-bottom: 0.75rem;
  font-size: 0.875rem;
  color: var(--primary, #2563eb);
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(8px);
}

.spinner-sm {
  width: 18px;
  height: 18px;
  border: 2px solid var(--border);
  border-top-color: var(--primary, #2563eb);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  flex-shrink: 0;
}

/* Simulation parameters */
.simulation-params {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  align-items: center;
}

.simulation-params label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.875rem;
}

.simulation-params input[type="number"] {
  padding: 0.4rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-size: 0.875rem;
  width: 80px;
}

.sim-recalculate-btn {
  margin-left: auto;
}

.sim-recalculate-dirty {
  animation: pulse-highlight 1.5s ease-in-out infinite;
}

@keyframes pulse-highlight {
  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(37, 99, 235, 0.4);
  }
  50% {
    box-shadow: 0 0 0 6px rgba(37, 99, 235, 0);
  }
}

/* Cluster setup items */
.cluster-setup-item {
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.75rem 1rem;
  margin-bottom: 0.75rem;
}

.cluster-setup-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.5rem;
}

.cluster-setup-header h4 {
  margin: 0;
  font-size: 0.9375rem;
}

.cluster-setup-boxes {
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.cluster-setup-boxes table {
  width: 100%;
  border-collapse: collapse;
  margin-top: 0.25rem;
}

.cluster-setup-boxes th {
  text-align: left;
  padding: 0.25rem 0.5rem;
  border-bottom: 1px solid var(--border);
  font-weight: 600;
  font-size: 0.75rem;
  color: var(--text-muted);
}

.cluster-setup-boxes td {
  padding: 0.25rem 0.5rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.8125rem;
}

.connector-frame-group {
  margin-bottom: 1rem;
}

.connector-frame-label {
  margin: 0 0 0.25rem 0;
  font-size: 0.875rem;
}

.connector-frame-group table {
  width: 100%;
  border-collapse: collapse;
}

.connector-frame-group th {
  text-align: left;
  padding: 0.25rem 0.5rem;
  border-bottom: 2px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.connector-frame-group td {
  padding: 0.25rem 0.5rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.8125rem;
}

.connector-angles {
  font-size: 0.75rem;
  color: var(--text-secondary);
}

.transformer-taps {
  margin-top: 0.75rem;
}

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

.transformer-table th {
  text-align: left;
  padding: 0.25rem 0.5rem;
  border-bottom: 2px solid var(--border);
  font-size: 0.75rem;
  color: var(--text-muted);
}

.transformer-table td {
  padding: 0.25rem 0.5rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.8125rem;
}

.btn-use-config {
  padding: 0.25rem 0.625rem;
  background: var(--primary);
  color: white;
  border: none;
  border-radius: 4px;
  cursor: pointer;
  font-size: 0.75rem;
}

.btn-use-config:hover {
  background: var(--primary-dark);
}

.config-active-badge {
  display: inline-block;
  padding: 0.125rem 0.5rem;
  background: var(--success);
  color: white;
  border-radius: 4px;
  font-size: 0.75rem;
  margin-left: 0.5rem;
}

/* Responsive */
@media (max-width: 640px) {
  .container {
    padding: 1rem;
  }

  header h1 {
    font-size: 1.75rem;
  }

  .drop-zone {
    padding: 2rem 1rem;
  }

  .tabs {
    gap: 0;
  }

  .tab {
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
  }

  .info-table th {
    width: 35%;
  }

  .balloon-viewer {
    height: 320px;
  }

  .inline-geometry-canvas {
    height: 420px;
  }
}