:root {
  /* Premium Color Palette */
  --bg-color: #222222;
  /* Dark Gray */
  --surface-color: #333333;
  --surface-hover: #444444;
  --surface-active: #555555;

  --primary: #00bceb;
  /* Bright Blue */
  --primary-hover: #0098bf;
  --accent: #8cbd3d;
  /* Emerald */
  --accent-hover: #678c2e;

  --text-main: #f8fafc;
  --text-muted: #aaaaaa;
  --text-dark: #222222;

  --border-color: #444444;
  --chart-colors: #00bceb, #8cbd3d, #f59e0b, #ec4899, #8b5cf6;

  /* Typography */
  --font-family: 'Inter', system-ui, -apple-system, sans-serif;
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Layout */
  --spacing-xs: 4px;
  --spacing-sm: 8px;
  --spacing-md: 16px;
  --spacing-lg: 24px;
  --spacing-xl: 32px;

  --sidebar-width: 400px;
}

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

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

/* App Layout */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.app-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-xl);
  background: rgba(51, 51, 51, 0.8);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.logo {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

h1 {
  font-size: 1.25rem;
  font-weight: 600;
}

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

.header-right {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

.freshness-badge {
  font-size: 0.75rem;
  color: var(--text-muted);
  background: var(--surface-hover);
  padding: 4px 8px;
  border-radius: var(--radius-full);
}

.app-grid {
  display: grid;
  grid-template-columns: 1fr 450px;
  gap: var(--spacing-xl);
  padding: var(--spacing-xl);
  flex: 1;
  max-width: 1600px;
  margin: 0 auto;
  width: 100%;
}

.input-column {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xl);
}

/* Panels */
.panel {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
}

.panel-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: var(--spacing-sm);
}

.panel-header h2 {
  font-size: 1.125rem;
  font-weight: 600;
}

.panel-description {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: var(--spacing-md);
}

.mt-l {
  margin-top: var(--spacing-lg);
}

.mt-xl {
  margin-top: var(--spacing-xl);
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: 8px 16px;
  border-radius: var(--radius-md);
  font-weight: 500;
  font-size: 0.875rem;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  font-family: var(--font-family);
}

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

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

.btn-primary:hover:not(:disabled) {
  background-color: var(--primary-hover);
}

.btn-secondary {
  background-color: var(--surface-hover);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover:not(:disabled) {
  background-color: var(--surface-active);
}

.btn-icon {
  background: transparent;
  color: var(--text-muted);
  padding: 8px;
  border-radius: var(--radius-md);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.2s;
}

.btn-icon:hover {
  color: var(--text-main);
  background: var(--surface-hover);
  border-color: var(--border-color);
}

/* Archetype Cards */
.archetype-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--spacing-md);
}

.archetype-card {
  background: linear-gradient(145deg, var(--surface-color), var(--surface-hover));
  border: 1px solid rgba(255, 255, 255, 0.05);
  /* Subtle inner border for glass effect */
  border-radius: var(--radius-lg);
  /* Slightly more rounded */
  padding: var(--spacing-lg);
  /* More breathing room */
  transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.2), 0 2px 4px -1px rgba(0, 0, 0, 0.1);
  position: relative;
  overflow: hidden;
}

/* Subtle accent line on top of each card */
.archetype-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
  opacity: 0.7;
  transition: opacity 0.3s ease;
}

.archetype-card:hover {
  transform: translateY(-2px);
  /* Lift effect */
  border-color: rgba(255, 255, 255, 0.1);
  box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.15);
}

.archetype-card:hover::before {
  opacity: 1;
}

.arch-card-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: var(--spacing-sm);
}

.arch-card-header h3 {
  font-size: 1.125rem;
  /* Slightly larger heading */
  font-weight: 600;
  color: var(--primary);
  letter-spacing: -0.01em;
}

.arch-card-header .btn-icon {
  opacity: 0.5;
  /* Fade out edit button slightly */
  transition: opacity 0.2s;
}

.archetype-card:hover .arch-card-header .btn-icon {
  opacity: 1;
  /* Show on hover */
}

.arch-desc {
  font-size: 0.8125rem;
  color: var(--text-main);
  /* slightly brighter text for description */
  margin-bottom: var(--spacing-md);
  line-height: 1.4;
  min-height: 48px;
}

.arch-stats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm) var(--spacing-md);
  font-size: 0.8125rem;
  padding-top: var(--spacing-sm);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  /* subtle divider */
}

.arch-stats span {
  display: flex;
  align-items: center;
  color: var(--text-muted);
}

.stat-group {
  display: flex;
  flex-direction: column;
}

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

/* Simulated Inputs for Card Display */
.read-only-input {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 8px 12px;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-family: var(--font-family);
  min-height: 38px;
  display: flex;
  align-items: center;
}

.mb-m {
  margin-bottom: var(--spacing-md);
}

/* Forms and Inputs */
.form-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: var(--spacing-sm);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
  align-items: flex-end;
  /* Align inputs correctly when labels wrap */
}

label {
  font-size: 0.875rem;
  color: var(--text-muted);
  font-weight: 500;
}

label.with-tooltip {
  display: flex;
  align-items: center;
  gap: 6px;
}

label.with-tooltip i {
  width: 14px;
  height: 14px;
  cursor: help;
  color: var(--primary);
}

input[type="number"],
input[type="text"],
select {
  background: var(--bg-color);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 8px 12px;
  border-radius: var(--radius-md);
  font-family: var(--font-family);
  font-size: 0.875rem;
  transition: border-color 0.2s;
}

input[type="number"]:focus,
input[type="text"]:focus,
select:focus {
  outline: none;
  border-color: var(--primary);
}

/* Sliders */
.slider-group {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
}

input[type="range"] {
  flex: 1;
  accent-color: var(--primary);
}

/* Tables */
.table-container {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.data-table th,
.data-table td {
  padding: 12px var(--spacing-sm);
  border-bottom: 1px solid var(--border-color);
}

.data-table th {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.875rem;
}

.data-table td {
  font-size: 0.875rem;
}

.data-table input[type="number"] {
  width: 100px;
  padding: 6px 8px;
}

.data-table tfoot td {
  border-top: 2px solid var(--border-color);
  border-bottom: none;
  font-weight: 600;
}

.highlight-metric {
  color: var(--accent);
}

/* Segmented Control */
.segmented-control {
  display: flex;
  background: var(--bg-color);
  padding: 4px;
  border-radius: var(--radius-md);
  margin-bottom: var(--spacing-lg);
}

.segment {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-muted);
  padding: 8px 0;
  border-radius: var(--radius-sm);
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

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

.segment.active {
  background: var(--surface-color);
  color: var(--text-main);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.model-settings {
  display: none;
  animation: fadeIn 0.3s ease;
}

.model-settings.active {
  display: block;
}

/* Results Panel Details */
.sticky-top {
  position: sticky;
  top: 100px;
  /* Below header */
}

.headline-metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(100px, 1fr));
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.metric-card {
  background: var(--bg-color);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--border-color);
}

.metric-card.primary {
  border-left-color: var(--primary);
}

.metric-card.accent {
  border-left-color: var(--accent);
}

.metric-card.warning {
  border-left-color: #f59e0b;
}

.metric-card h3 {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.metric-value {
  font-size: 1.5rem;
  /* Reduced from 1.75rem to fit better in 3-col layout */
  font-weight: 700;
  white-space: nowrap;
  /* Prevent awkward wrapping of large currency numbers */
}

.metric-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: 4px;
}

.chart-container {
  height: 250px;
  width: 100%;
  margin-top: var(--spacing-md);
}

/* Comparison Strip */
.deployment-comparison h3 {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: var(--spacing-sm);
}

.comparison-track {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.comp-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  background: var(--bg-color);
  border: 1px solid var(--border-color);
}

.comp-bar.cloud {
  border-left: 3px solid var(--primary);
}

.comp-bar.hybrid {
  border-left: 3px solid #8b5cf6;
}

.comp-bar.onprem {
  border-left: 3px solid var(--accent);
}

/* Footer */
.app-footer {
  margin-top: auto;
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--surface-color);
  border-top: 1px solid var(--border-color);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1600px;
  margin: 0 auto;
}

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

.footer-actions {
  display: flex;
  gap: var(--spacing-md);
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(34, 34, 34, 0.8);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-overlay.active {
  display: flex;
}

.modal-content {
  background: var(--surface-color);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 500px;
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.5);
  animation: slideUp 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--border-color);
}

.modal-body {
  padding: var(--spacing-lg);
}

.modal-actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--spacing-md);
  margin-top: var(--spacing-lg);
}

/* Utilities / Animations */
@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes slideUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Responsive */
@media (max-width: 1024px) {
  .app-grid {
    grid-template-columns: 1fr;
  }

  .sticky-top {
    position: static;
  }
}

/* New TCO Additions */
.crossover-alert {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid var(--accent);
  border-radius: var(--radius-md);
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-md);
  display: none;
  align-items: flex-start;
  gap: var(--spacing-sm);
}

.crossover-alert.active {
  display: flex;
  animation: fadeIn 0.4s ease;
}

.crossover-alert i {
  color: var(--accent);
  flex-shrink: 0;
}

.crossover-content h4 {
  color: var(--accent);
  font-size: 0.875rem;
  margin-bottom: 4px;
}

.crossover-content p {
  color: var(--text-main);
  font-size: 0.75rem;
  line-height: 1.4;
}