@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Mono:wght@400;500;600;700&family=IBM+Plex+Sans:wght@300;400;500;600;700&family=Inter:wght@300;400;500;600;700&display=swap');

:root {
  /* Color Palette */
  --bg-primary: #F4F1EA;
  --bg-secondary: #ECE7DD;
  --panel-bg: #FFFFFF;
  --text-primary: #222222;
  --text-secondary: #5A5A5A;
  --accent-sienna: #7B4F36;
  --accent-sage: #5D6B5D;
  --accent-brass: #A68A64;
  --border-color: #D8D2C7;
  
  /* Status Colors */
  --color-success: #5B7153;
  --color-warning: #C58A3A;
  --color-danger: #A24B42;

  /* Typography */
  --font-headings: 'IBM Plex Sans', 'Inter', sans-serif;
  --font-body: 'Inter', sans-serif;
  --font-mono: 'IBM Plex Mono', monospace;

  /* Geometry */
  --radius-sm: 4px;
  --radius-md: 8px;
  --sidebar-width: 320px;
  --metrics-width: 300px;
  --nav-height: 56px;
  --bottom-panel-height: 200px;
}

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

body {
  font-family: var(--font-body);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  height: 100vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  position: relative;
}

/* Paper Texture Overlay */
body::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noiseFilter'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.65' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noiseFilter)'/%3E%3C/svg%3E");
}

/* Typography elements */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-headings);
  font-weight: 500;
  letter-spacing: -0.01em;
}

input, select, textarea, button {
  font-family: inherit;
  font-size: 0.9rem;
}

.mono {
  font-family: var(--font-mono);
}

/* Navigation Layout */
header {
  height: var(--nav-height);
  background-color: var(--panel-bg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  z-index: 10;
}

.logo-section {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-section svg {
  color: var(--accent-sienna);
}

.logo-text {
  font-size: 1.1rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--text-primary);
}

.logo-sub {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--accent-brass);
  border: 1px solid var(--border-color);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

.nav-tabs {
  display: flex;
  height: 100%;
}

.nav-tab {
  background: none;
  border: none;
  border-left: 1px solid transparent;
  border-right: 1px solid transparent;
  color: var(--text-secondary);
  padding: 0 20px;
  cursor: pointer;
  font-weight: 500;
  font-size: 0.9rem;
  display: flex;
  align-items: center;
  transition: background-color 0.15s ease, color 0.15s ease;
  height: 100%;
}

.nav-tab:hover {
  color: var(--text-primary);
  background-color: var(--bg-primary);
}

.nav-tab.active {
  color: var(--accent-sienna);
  background-color: var(--bg-primary);
  border-left: 1px solid var(--border-color);
  border-right: 1px solid var(--border-color);
  border-bottom: 2px solid var(--accent-sienna);
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background-color: var(--bg-secondary);
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--color-success);
}

.status-dot.active-sim {
  animation: pulse-green 2s infinite ease-in-out;
}

@keyframes pulse-green {
  0% { opacity: 0.5; }
  50% { opacity: 1; }
  100% { opacity: 0.5; }
}

.btn-sidebar-toggle {
  background-color: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 4px 8px;
  cursor: pointer;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-sidebar-toggle:hover {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
}

/* Main Dashboard Workspace Layout */
main {
  flex: 1;
  display: flex;
  position: relative;
  overflow: hidden;
}

.tab-content {
  display: none;
  width: 100%;
  height: 100%;
}

.tab-content.active {
  display: flex;
  flex-direction: column;
}

/* Grid & Workspace Architecture */
.workspace-grid {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr var(--metrics-width);
  grid-template-rows: 1fr var(--bottom-panel-height);
  width: 100%;
  height: 100%;
  background-color: var(--bg-secondary);
  gap: 1px; /* border grid effect */
}

/* Panel Containers */
.panel {
  background-color: var(--panel-bg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.panel-header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background-color: var(--panel-bg);
}

.panel-title {
  font-family: var(--font-headings);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 8px;
}

.panel-body {
  flex: 1;
  padding: 16px;
  overflow-y: auto;
}

/* Inputs & Form Fields */
.form-group {
  margin-bottom: 16px;
}

.form-group label {
  display: block;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--text-secondary);
  margin-bottom: 6px;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.input-with-unit {
  position: relative;
  display: flex;
  align-items: stretch;
}

.input-with-unit input {
  flex: 1;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm) 0 0 var(--radius-sm);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  outline: none;
  font-family: var(--font-mono);
}

.input-with-unit input:focus {
  border-color: var(--accent-sienna);
  background-color: var(--panel-bg);
}

.input-unit {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-left: none;
  padding: 8px 10px;
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
  min-width: 45px;
  justify-content: center;
}

.slider-group {
  margin-top: 8px;
}

.slider-container {
  display: flex;
  align-items: center;
  gap: 12px;
}

.slider-container input[type="range"] {
  flex: 1;
  -webkit-appearance: none;
  appearance: none;
  height: 4px;
  background: var(--border-color);
  border-radius: 2px;
  outline: none;
}

.slider-container input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent-sienna);
  cursor: pointer;
  border: 2px solid var(--panel-bg);
  box-shadow: 0 1px 3px rgba(0,0,0,0.15);
  transition: transform 0.1s ease;
}

.slider-container input[type="range"]::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.slider-val {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  width: 50px;
  text-align: right;
  color: var(--text-primary);
}

/* Custom Select and Toggles */
select.form-control {
  width: 100%;
  padding: 8px 12px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  outline: none;
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='%235A5A5A' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  padding-right: 32px;
}

select.form-control:focus {
  border-color: var(--accent-sienna);
  background-color: var(--panel-bg);
}

/* Custom Buttons styling */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 16px;
  border-radius: var(--radius-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.15s ease;
  border: 1px solid var(--border-color);
  background-color: var(--panel-bg);
  color: var(--text-primary);
}

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

.btn-primary {
  background-color: var(--accent-sienna);
  color: var(--panel-bg);
  border-color: var(--accent-sienna);
}

.btn-primary:hover {
  background-color: #643f29;
  border-color: #643f29;
}

.btn-secondary {
  background-color: var(--accent-sage);
  color: var(--panel-bg);
  border-color: var(--accent-sage);
}

.btn-secondary:hover {
  background-color: #4b584b;
  border-color: #4b584b;
}

.btn-outline {
  border: 1px solid var(--accent-sienna);
  color: var(--accent-sienna);
}

.btn-outline:hover {
  background-color: rgba(123, 79, 54, 0.05);
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Visualization Canvas Area */
.canvas-container {
  position: relative;
  flex: 1;
  background-color: var(--bg-primary);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.canvas-viewport {
  flex: 1;
  position: relative;
  background-color: var(--bg-primary);
  outline: none;
  min-height: 0;
}

.canvas-blueprint-grid {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  background-size: 40px 40px;
  background-image: 
    linear-gradient(to right, rgba(216, 210, 199, 0.4) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(216, 210, 199, 0.4) 1px, transparent 1px);
}

.canvas-overlay-data {
  position: absolute;
  top: 16px;
  left: 16px;
  background-color: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--border-color);
  padding: 12px;
  border-radius: var(--radius-sm);
  display: flex;
  flex-direction: column;
  gap: 6px;
  pointer-events: none;
  z-index: 5;
}

.canvas-overlay-data .metric-row {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  font-size: 0.8rem;
}

.canvas-overlay-data .metric-row .val {
  font-family: var(--font-mono);
  font-weight: 600;
}

/* Flight Reports / Bottom Console Log Panel */
.bottom-panel {
  grid-column: 1 / span 3;
  border-top: 1px solid var(--border-color);
  height: var(--bottom-panel-height);
  background-color: var(--panel-bg);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.log-terminal {
  flex: 1;
  background-color: #222222;
  color: #ECE7DD;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 12px 16px;
  overflow-y: auto;
  line-height: 1.5;
}

.log-entry {
  margin-bottom: 4px;
  display: flex;
}

.log-time {
  color: var(--accent-brass);
  margin-right: 12px;
  user-select: none;
}

.log-text.system { color: #8fa08f; }
.log-text.success { color: #8caf81; }
.log-text.warning { color: #d0aa73; }
.log-text.danger { color: #c07a73; }

/* Engineering Metrics Columns */
.metric-card {
  border: 1px solid var(--border-color);
  background-color: var(--panel-bg);
  border-radius: var(--radius-sm);
  padding: 12px;
  margin-bottom: 12px;
}

.metric-card-title {
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
  color: var(--text-secondary);
  margin-bottom: 6px;
}

.metric-card-value {
  font-family: var(--font-mono);
  font-size: 1.4rem;
  font-weight: bold;
  color: var(--text-primary);
}

.metric-card-desc {
  font-size: 0.7rem;
  color: var(--text-secondary);
  margin-top: 4px;
}

.metric-gauge-container {
  height: 8px;
  background-color: var(--bg-secondary);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-top: 8px;
  border: 1px solid var(--border-color);
}

.metric-gauge-bar {
  height: 100%;
  background-color: var(--accent-sienna);
  width: 0%;
  transition: width 0.3s ease;
}

.metric-gauge-bar.danger { background-color: var(--color-danger); }
.metric-gauge-bar.warning { background-color: var(--color-warning); }
.metric-gauge-bar.success { background-color: var(--color-success); }

/* Scientific Plots Panel layout */
.charts-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  grid-template-rows: 1fr 1fr;
  gap: 12px;
  height: 100%;
  padding: 8px;
  background-color: var(--bg-secondary);
}

.chart-wrapper {
  background-color: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 8px;
  display: flex;
  flex-direction: column;
}

.chart-title {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
  display: flex;
  justify-content: space-between;
}

.chart-title span.val {
  font-family: var(--font-mono);
  color: var(--text-primary);
}

.chart-canvas-container {
  flex: 1;
  position: relative;
  min-height: 0;
}

.chart-canvas-container canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Timeline CSS styles */
.timeline-container {
  height: 48px;
  background-color: var(--panel-bg);
  border-top: 1px solid var(--border-color);
  position: relative;
  display: flex;
  align-items: center;
  padding: 0 16px;
}

.timeline-bar {
  flex: 1;
  height: 4px;
  background-color: var(--border-color);
  position: relative;
  border-radius: 2px;
}

.timeline-progress {
  position: absolute;
  left: 0;
  top: 0;
  height: 100%;
  width: 0%;
  background-color: var(--accent-sienna);
  border-radius: 2px;
}

.timeline-event-marker {
  position: absolute;
  width: 10px;
  height: 10px;
  background-color: var(--color-danger);
  border: 2px solid var(--panel-bg);
  border-radius: 50%;
  transform: translate(-50%, -3px);
  cursor: pointer;
}

.timeline-event-marker::after {
  content: attr(data-label);
  position: absolute;
  bottom: 14px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--text-primary);
  color: var(--panel-bg);
  font-size: 0.65rem;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.15s ease;
}

.timeline-event-marker:hover::after {
  opacity: 1;
}

.timeline-event-marker.warning {
  background-color: var(--color-warning);
}

/* Nose Cone Optimization Lab Specific Layouts */
.lab-split-workspace {
  display: grid;
  grid-template-columns: 340px 1fr;
  flex: 1;
  background-color: var(--bg-secondary);
  gap: 1px;
  height: 100%;
  overflow: hidden;
}

.nosecone-comparison-viewport {
  background-color: var(--panel-bg);
  display: flex;
  flex-direction: column;
  height: 100%;
  overflow: hidden;
}

.nosecone-visualizers {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  padding: 16px;
  min-height: 0;
}

.nosecone-panel {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  display: flex;
  flex-direction: column;
  background-color: var(--bg-primary);
  overflow: hidden;
}

.nosecone-panel-title {
  padding: 10px 16px;
  background-color: var(--panel-bg);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nosecone-panel-title select {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  padding: 2px 8px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: var(--bg-primary);
}

.nosecone-render-area {
  flex: 1;
  position: relative;
  min-height: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nosecone-render-area canvas {
  width: 100%;
  height: 100%;
  display: block;
}

.nosecone-metrics-compare {
  padding: 12px 16px;
  background-color: var(--panel-bg);
  border-top: 1px solid var(--border-color);
  font-family: var(--font-mono);
  font-size: 0.8rem;
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 8px 16px;
}

.comparison-charts-radar {
  height: 220px;
  border-top: 1px solid var(--border-color);
  background-color: var(--panel-bg);
  padding: 12px;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Mission Patch Generator Specific Styles */
.patch-studio-grid {
  display: grid;
  grid-template-columns: 360px 1fr;
  flex: 1;
  background-color: var(--bg-secondary);
  gap: 1px;
  height: 100%;
}

.patch-preview-panel {
  background-color: var(--panel-bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 24px;
  position: relative;
}

.patch-svg-container {
  width: 100%;
  max-width: 440px;
  aspect-ratio: 1;
  background-color: var(--bg-primary);
  border: 1px dashed var(--border-color);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 20px;
  box-shadow: inset 0 2px 8px rgba(0,0,0,0.03);
}

.patch-svg-container svg {
  width: 100%;
  height: 100%;
  filter: drop-shadow(0 4px 10px rgba(0, 0, 0, 0.08));
}

/* Saved Designs Sidebar Widget */
.saved-designs-list {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.saved-design-item {
  border: 1px solid var(--border-color);
  background-color: var(--bg-primary);
  border-radius: var(--radius-sm);
  padding: 10px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.saved-design-item:hover {
  border-color: var(--accent-sienna);
  background-color: var(--panel-bg);
}

.saved-design-item .title {
  font-weight: 600;
  font-size: 0.8rem;
  margin-bottom: 2px;
}

.saved-design-item .subtitle {
  font-size: 0.7rem;
  color: var(--text-secondary);
  font-family: var(--font-mono);
}

/* Documentation Hub Layout */
.docs-layout {
  display: grid;
  grid-template-columns: 240px 1fr;
  flex: 1;
  background-color: var(--bg-secondary);
  gap: 1px;
  height: 100%;
  overflow: hidden;
}

.docs-nav {
  background-color: var(--panel-bg);
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  overflow-y: auto;
}

.docs-nav-link {
  font-size: 0.85rem;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--text-secondary);
  transition: all 0.15s ease;
  border-left: 2px solid transparent;
}

.docs-nav-link:hover {
  background-color: var(--bg-primary);
  color: var(--text-primary);
}

.docs-nav-link.active {
  background-color: var(--bg-primary);
  color: var(--accent-sienna);
  border-left-color: var(--accent-sienna);
  font-weight: 500;
}

.docs-content {
  background-color: var(--panel-bg);
  padding: 40px;
  overflow-y: auto;
  line-height: 1.6;
  max-width: 900px;
}

.docs-section {
  display: none;
}

.docs-section.active {
  display: block;
}

.docs-content h2 {
  font-size: 1.8rem;
  color: var(--text-primary);
  margin-bottom: 8px;
  border-bottom: 2px solid var(--bg-secondary);
  padding-bottom: 8px;
}

.docs-content h3 {
  font-size: 1.25rem;
  color: var(--accent-sienna);
  margin-top: 24px;
  margin-bottom: 8px;
}

.docs-content p {
  margin-bottom: 16px;
  color: var(--text-secondary);
}

.docs-content ul, .docs-content ol {
  margin-left: 24px;
  margin-bottom: 16px;
  color: var(--text-secondary);
}

.docs-content li {
  margin-bottom: 6px;
}

.docs-equation {
  background-color: var(--bg-primary);
  border: 1px solid var(--border-color);
  padding: 16px;
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.9rem;
  margin: 16px 0;
  text-align: center;
  color: var(--text-primary);
  position: relative;
}

.docs-equation::after {
  content: "EQN";
  position: absolute;
  top: 4px;
  right: 6px;
  font-size: 0.6rem;
  color: var(--accent-brass);
}

/* Overview Layout styles */
.overview-workspace {
  display: grid;
  grid-template-columns: 1fr 320px;
  flex: 1;
  background-color: var(--bg-secondary);
  gap: 1px;
  height: 100%;
}

.overview-main {
  background-color: var(--panel-bg);
  padding: 24px;
  overflow-y: auto;
}

.overview-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 20px;
}

.overview-card {
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
  background-color: var(--bg-primary);
}

.overview-card h3 {
  font-size: 1rem;
  color: var(--accent-sienna);
  margin-bottom: 12px;
}

.overview-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  margin-bottom: 16px;
}

.blueprint-diagram {
  border: 1px solid var(--border-color);
  background-color: var(--bg-secondary);
  height: 240px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  position: relative;
}

.blueprint-diagram svg {
  max-width: 90%;
  max-height: 90%;
}

/* Modals & Loader overlays */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-color: rgba(34, 34, 34, 0.4);
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: center;
  backdrop-filter: blur(2px);
}

.modal-container {
  background-color: var(--panel-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  width: 480px;
  max-width: 90%;
  display: flex;
  flex-direction: column;
  box-shadow: 0 10px 25px rgba(0,0,0,0.1);
  overflow: hidden;
}

.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.modal-body {
  padding: 20px;
  overflow-y: auto;
}

.modal-footer {
  padding: 16px 20px;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 12px;
}

.simulation-loader {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  padding: 30px;
  text-align: center;
}

.loader-spinner {
  width: 40px;
  height: 40px;
  border: 3px solid var(--border-color);
  border-top-color: var(--accent-sienna);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

.loader-text {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* Sidebar configuration details styling */
.saved-header {
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  color: var(--accent-brass);
  letter-spacing: 0.05em;
  margin-top: 16px;
  margin-bottom: 8px;
  padding-bottom: 4px;
  border-bottom: 1px dashed var(--border-color);
}