examples/budget-allocator-server/src/mcp-app.css

/* CSS Variables for theming */
:root {
  --color-bg: #ffffff;
  --color-text: #1f2937;
  --color-text-muted: #6b7280;
  --color-border: #e5e7eb;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-info: #3b82f6;
  --slider-track: #e5e7eb;
  --slider-thumb: #3b82f6;
  --slider-thumb-size: 16px;
  --card-bg: #f9fafb;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #111827;
    --color-text: #f9fafb;
    --color-text-muted: #9ca3af;
    --color-border: #374151;
    --color-success: #34d399;
    --color-warning: #fbbf24;
    --color-danger: #f87171;
    --color-info: #60a5fa;
    --slider-track: #374151;
    --slider-thumb: #60a5fa;
    --card-bg: #1f2937;
  }
}

body {
  background: var(--color-bg);
  color: var(--color-text);
}

/* App Container - Prefers 600px but shrinks responsively */
.app-container {
  display: flex;
  flex-direction: column;
  height: 600px;
  width: 100%;
  max-width: 100%;
  max-height: 100%;
  overflow: hidden;
  padding: 12px;
  gap: 8px;
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
  overflow: hidden;
}

/* Header */
.header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-shrink: 0;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--color-border);
}

.title {
  margin: 0;
  font-size: 18px;
  font-weight: 600;
}

.budget-select {
  padding: 6px 12px;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
}

.budget-select:focus {
  outline: 2px solid var(--color-info);
  outline-offset: 1px;
}

/* Chart Section */
.chart-section {
  flex: 0 0 160px;
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 4px;
}

#budget-chart {
  max-width: 150px;
  max-height: 150px;
}

/* Sliders Section */
.sliders-section {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 6px;
  overflow: visible;
  min-height: 0;
}

/* Slider Row */
.slider-row {
  display: grid;
  grid-template-columns: 95px 50px minmax(60px, 1fr) 56px 46px;
  align-items: center;
  gap: 6px;
  padding: 5px 8px;
  border-radius: 6px;
  background: var(--card-bg);
  transition: background-color 0.15s ease;
}

.slider-row.highlighted {
  background: var(--color-border);
}

/* Responsive: narrower screens */
@media (max-width: 500px) {
  .app-container {
    padding: 8px;
    gap: 6px;
  }

  .header {
    padding-bottom: 6px;
  }

  .title {
    font-size: 16px;
  }

  .chart-section {
    flex: 0 0 120px;
  }

  #budget-chart {
    max-width: 110px;
    max-height: 110px;
  }

  .slider-row {
    grid-template-columns: 85px 40px minmax(30px, 1fr) 48px 38px;
    gap: 4px;
    padding: 3px 4px;
  }

  .slider-label {
    font-size: 12px;
    gap: 4px;
  }

  .color-dot {
    width: 8px;
    height: 8px;
  }

  .sparkline {
    width: 32px;
    height: 16px;
  }

  .slider-value .percent {
    font-size: 11px;
  }

  .slider-value .amount {
    font-size: 9px;
  }

  .percentile-badge {
    font-size: 9px;
    padding: 2px 4px;
  }

  .status-bar {
    font-size: 11px;
    padding: 6px 8px;
  }

  .comparison-bar {
    font-size: 10px;
    padding: 6px 8px;
    flex-wrap: wrap;
    gap: 4px;
  }
}

/* Very narrow screens: hide sparklines */
@media (max-width: 380px) {
  .slider-row {
    grid-template-columns: 80px minmax(30px, 1fr) 44px 36px;
  }

  .sparkline-wrapper {
    display: none;
  }

  .comparison-bar {
    flex-direction: column;
    align-items: flex-start;
  }
}

/* Slider Label */
.slider-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
}

.color-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background-color: var(--category-color);
  flex-shrink: 0;
}

.label-text {
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Sparkline */
.sparkline {
  width: 50px;
  height: 28px;
  border-radius: 3px;
  background: var(--color-border);
  cursor: help;
}

.sparkline-wrapper {
  position: relative;
}

.sparkline-wrapper:hover .sparkline-tooltip {
  opacity: 1;
  visibility: visible;
}

.sparkline-tooltip {
  position: absolute;
  bottom: 100%;
  left: 50%;
  transform: translateX(-50%);
  padding: 5px 10px;
  background: var(--color-text);
  color: var(--color-bg);
  font-size: 12px;
  border-radius: 4px;
  white-space: nowrap;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.15s ease;
  pointer-events: none;
  z-index: 10;
  margin-bottom: 4px;
}

/* Slider Container - pad left to prevent thumb bleeding into sparkline */
.slider-container {
  overflow: visible;
  padding: 4px 0 4px calc(var(--slider-thumb-size) / 2);
}

/* Range Slider */
.slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: var(--slider-track);
  outline: none;
  cursor: pointer;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: var(--slider-thumb-size);
  height: var(--slider-thumb-size);
  border-radius: 50%;
  background: var(--slider-thumb);
  cursor: pointer;
  transition: transform 0.1s ease;
  border: 2px solid var(--color-bg);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.slider::-moz-range-thumb {
  width: var(--slider-thumb-size);
  height: var(--slider-thumb-size);
  border-radius: 50%;
  background: var(--slider-thumb);
  cursor: pointer;
  border: 2px solid var(--color-bg);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.2);
}

.slider:focus {
  outline: none;
}

.slider:focus::-webkit-slider-thumb {
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

/* Slider Value Display */
.slider-value {
  text-align: right;
  font-variant-numeric: tabular-nums;
}

.slider-value .percent {
  display: block;
  font-size: 15px;
  font-weight: 600;
}

.slider-value .amount {
  display: block;
  font-size: 12px;
  color: var(--color-text-muted);
}

/* Percentile Badge */
.percentile-badge {
  font-size: 12px;
  font-weight: 500;
  padding: 3px 6px;
  border-radius: 4px;
  text-align: center;
  white-space: nowrap;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 2px;
}

.percentile-icon {
  font-size: 8px;
}

.percentile-normal {
  color: var(--color-success);
  background: rgba(16, 185, 129, 0.15);
}

.percentile-high {
  color: var(--color-info);
  background: rgba(59, 130, 246, 0.15);
}

.percentile-low {
  color: var(--color-warning);
  background: rgba(245, 158, 11, 0.15);
}

/* Footer */
.footer {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

/* Status Bar */
.status-bar {
  padding: 10px 12px;
  border-radius: 6px;
  text-align: center;
  font-size: 15px;
  font-weight: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
}

.status-balanced {
  background: rgba(16, 185, 129, 0.15);
  color: var(--color-success);
}

.status-warning {
  background: rgba(245, 158, 11, 0.15);
  color: var(--color-warning);
}

.status-warning.status-over {
  background: rgba(239, 68, 68, 0.15);
  color: var(--color-danger);
}

.status-icon {
  font-size: 12px;
}

/* Comparison Bar */
.comparison-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 8px 12px;
  background: var(--card-bg);
  border-radius: 6px;
  font-size: 12px;
  color: var(--color-text-muted);
}

.comparison-highlight {
  font-weight: 600;
  color: var(--color-text);
}

.stage-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
}

.stage-select {
  padding: 4px 8px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: var(--color-bg);
  color: var(--color-text);
  font-size: 12px;
  cursor: pointer;
}

.stage-select:focus {
  outline: 2px solid var(--color-info);
  outline-offset: 1px;
}