:root {
  --text-dark: hsl(141, 41%, 5%);
  --text-light: hsl(141, 41%, 95%);
  --bg-light: hsl(51, 100%, 5%);
  --bg-dark: #000;
  --water-400: hsl(210, 58%, 71%);
  --nature-200: hsl(159, 27%, 63%);
  --nature-300: hsl(159, 27%, 53%);
  --nature-400: hsl(159, 27%, 43%);
  --nature-500: hsl(159, 27%, 43%);
  --nature-600: hsl(159, 27%, 33%);
  --infra-200: hsl(0, 0%, 79%);
  --urban-300: hsl(345, 43%, 83%);
  --urban-400: hsl(345, 43%, 73%);
  --urban-500: hsl(345, 43%, 63%);
  --agriculture-300: hsl(51, 100%, 90%);
  --agriculture-350: hsl(51, 100%, 85%);
  --agriculture-400: hsl(51, 100%, 80%);
  --agriculture-450: hsl(51, 100%, 75%);
  --agriculture-500: hsl(51, 100%, 70%);
  --agriculture-600: hsl(51, 100%, 60%);
  --agriculture-650: hsl(51, 100%, 55%);
  --agriculture-700: hsl(51, 100%, 50%);
  --agriculture-750: hsl(51, 100%, 45%);
  --agriculture-775: hsl(51, 100%, 42%);
  --agriculture-800: hsl(51, 100%, 40%);
  --agriculture-825: hsl(51, 100%, 38%);
  --agriculture-850: hsl(51, 100%, 35%);
  --agriculture-900: hsl(51, 100%, 30%);
  --agriculture-920: hsl(51, 100%, 28%);
  --agriculture-950: hsl(51, 100%, 25%);
  --bare-200: hsl(0, 0%, 85%);
  --bare-300: hsl(0, 0%, 75%);
  --bare-400: hsl(0, 0%, 65%);
  --bare-500: hsl(0, 0%, 55%);
}

* {
  box-sizing: border-box;
}

html {
  background: linear-gradient(to bottom, var(--bg-dark), var(--bg-light));
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  background-color: var(--bg-dark);
  color: var(--text-light);
}

html,
body {
  min-height: 100%;
  min-width: 100%;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
}

header {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 32px;
  gap: 12px;
  flex-wrap: wrap;
}

h1 {
  margin: 0;
  font-size: 24px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.country-dropdown {
  background: var(--bg-dark);
  border: none;
  color: var(--text-light);
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 24px;
  font-weight: 600;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%23f0f0f0' 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 8px center;
  background-size: 20px;
  padding-right: 40px;
  transition: all 0.2s ease;
}

.country-dropdown:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.2);
}

.country-dropdown:focus {
  outline: none;
  border: none;
  border-color: var(--text-light);
  background-color: rgba(255, 255, 255, 0);
}

.country-dropdown option {
  background: var(--bg-dark);
  color: var(--text-light);
  padding: 10px;
}

.toggle-button {
  background: var(--bg-dark);
  border: 2px solid rgba(255, 255, 255, 0.2);
  color: var(--text-light);
  padding: 10px 20px;
  border-radius: 8px;
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: 120px;
}

.toggle-button:hover {
  background-color: rgba(255, 255, 255, 0.1);
  border-color: rgba(255, 255, 255, 0.3);
}

.toggle-button:active {
  transform: scale(0.98);
}

.toggle-button:focus {
  outline: none;
  border-color: var(--text-light);
}

svg {
  padding: 25px;
  max-width: 800px;
  margin: auto;
}

a {
  text-decoration: underline;
  color: var(--text-light);
}

.hexagon {
  stroke: var(--bg-light);
  stroke-width: 0.1px;
  cursor: pointer;
}

.hexagon.highlight {
  stroke-width: 1px;
}

.legend-item.dimmed {
  opacity: 0.4;
}

/* Mobile responsive styles */
@media (max-width: 768px) {
  header {
    padding: 20px 16px;
  }

  h1 {
    font-size: 16px;
    flex-direction: column;
    gap: 8px;
    text-align: center;
  }

  .country-dropdown {
    font-size: 14px;
    padding: 8px 12px;
    padding-right: 36px;
    background-size: 18px;
  }

  .toggle-button {
    font-size: 14px;
    padding: 8px 16px;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 14px;
  }

  .country-dropdown {
    font-size: 13px;
    padding: 6px 10px;
    padding-right: 32px;
  }

  .toggle-button {
    font-size: 13px;
    padding: 6px 12px;
  }
}