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

html, body {
  height: 100%;
  width: 100%;
}

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background: #fff;
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  padding: 40px 20px;
}

.page-wrapper {
  width: 100%;
  display: flex;
  justify-content: center;
  align-items: center;
}

.chart-container {
  max-width: 800px;
  width: 100%;
  background: #fff;
  margin: 0 auto;
}

.header {
  position: relative;
  margin-bottom: 12px;
}

.title {
  font-size: 18px;
  font-weight: bold;
  color: #4d4d4d;
  margin: 0;
  padding-right: 220px;
  line-height: 1.3;
}

.subtitle {
  font-size: 9px;
  color: #666;
  margin: 4px 0 0 0;
  line-height: 1.3;
  padding-right: 220px;
}

.header-controls {
  position: absolute;
  top: 0;
  right: 0;
  width: 200px;
}

.index-control {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 8px;
  color: #888;
  font-weight: bold;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: 6px;
  width: 100%;
}

.index-control label {
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 3px;
}

.index-toggle {
  width: 8px;
  height: 8px;
  border: 1px solid #aaa;
  border-radius: 2px;
  display: inline-block;
  background: #fff;
  cursor: pointer;
  transition: background 0.2s ease;
}

.index-toggle:hover {
  border-color: #888;
}

.index-toggle.active {
  background: #aaa;
}

.slider-container {
  display: none;
  align-items: center;
  margin-left: auto;
}

.slider-container.visible {
  display: flex;
}

.index-slider {
  width: 100px;
  height: 2px;
  -webkit-appearance: none;
  appearance: none;
  background: #ddd;
  border-radius: 1px;
  outline: none;
  cursor: pointer;
}

.index-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 6px;
  height: 6px;
  background: #888;
  border-radius: 50%;
  cursor: pointer;
  transition: transform 0.1s ease;
}

.index-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.index-slider::-moz-range-thumb {
  width: 6px;
  height: 6px;
  background: #888;
  border-radius: 50%;
  cursor: pointer;
  border: none;
}

.index-year {
  font-size: 8px;
  color: #888;
  min-width: 24px;
  margin-left: 4px;
  font-weight: normal;
}

.legend-container {
  width: 100%;
}

.legend-title {
  font-size: 8px;
  font-weight: bold;
  color: #888;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  text-align: center;
  margin-bottom: 4px;
}

.legend-bar {
  height: 10px;
  border-radius: 2px;
  margin-bottom: 3px;
}

.legend-labels {
  display: flex;
  justify-content: space-between;
  font-size: 7px;
  color: #888;
}

.caption {
  font-size: 8px;
  color: #888;
  margin-top: 8px;
  line-height: 1.4;
}

#chart svg {
  display: block;
}

.axis text {
  font-size: 9px;
  fill: #888;
}

.axis path,
.axis line {
  stroke: #ccc;
}

.grid line {
  stroke: #ebebeb;
  stroke-dasharray: 2,2;
}

.recession {
  fill: #f7f7f7;
}

.line {
  fill: none;
  stroke-width: 1.2;
}

.tooltip {
  position: absolute;
  background: rgba(255,255,255,0.95);
  border: 1px solid #ddd;
  border-radius: 4px;
  padding: 8px 12px;
  font-size: 11px;
  pointer-events: none;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
  z-index: 1000;
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
}

/* Responsive adjustments */
@media (max-width: 850px) {
  body {
    padding: 20px 15px;
  }
  
  .title {
    font-size: 16px;
    padding-right: 180px;
  }
  
  .subtitle {
    padding-right: 180px;
  }
  
  .header-controls {
    width: 170px;
  }
  
  .index-slider {
    width: 80px;
  }
}

@media (max-width: 600px) {
  .title {
    font-size: 14px;
    padding-right: 0;
    margin-bottom: 50px;
  }
  
  .subtitle {
    padding-right: 0;
  }
  
  .header-controls {
    position: relative;
    width: 100%;
    margin-top: 10px;
  }
}