:root {
  color-scheme: light dark;
  --background: #10141a;
  --surface: #1c2530;
  --surface-alt: #f2f2f2;
  --text: #f9fafb;
  --text-dark: #1c2530;
  --accent: #2b8de0;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  height: 100vh;
  overflow: hidden;
}

#map {
  width: 100vw;
  height: 100vh;
  position: absolute;
  top: 0;
  left: 0;
}

.status {
  min-height: 1.5rem;
  font-size: 0.95rem;
  color: var(--text-dark);
}

#controls-panel {
  position: absolute;
  top: 20px;
  left: 20px;
  background: rgba(255, 255, 255, 0.95);
  padding: 15px;
  border-radius: 8px;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
  z-index: 1000;
  min-width: 200px;
}

#legend-panel {
  position: absolute;
  top: 20px;
  right: 20px;
  background: rgba(255, 255, 255, 0.95);
  padding: 20px 22px; /* Increased padding */
  border-radius: 10px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15); /* Slightly stronger shadow */
  z-index: 1000;
  min-width: 190px; /* Increased width */
}

#legend-panel h3 {
  margin: 0 0 12px 0;
  font-size: 16px; /* Bigger heading */
  font-weight: 600;
  color: var(--text-dark);
  letter-spacing: 0.5px;
}

.legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.legend-item:last-child {
  margin-bottom: 0;
}

.legend-item span {
  font-size: 14px; /* Larger label text */
  color: var(--text-dark);
}

.legend-color {
  width: 20px; /* Larger swatch */
  height: 20px;
  border-radius: 3px;
  border: 1px solid #ccc;
}

.legend-color.transparent {
  background: transparent;
}

.legend-color.blue {
  background: #1565c0; /* Blue tone replacing previous green */
  opacity: 0.85;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.control-group label {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-dark);
}

.slider {
  width: 100%;
  height: 6px;
  border-radius: 3px;
  background: #ddd;
  outline: none;
  -webkit-appearance: none;
  appearance: none;
}

.slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.slider::-moz-range-thumb {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: none;
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

@media (prefers-color-scheme: dark) {
  body {
    background: var(--background);
    color: var(--text);
  }

  #map {
    border-color: rgba(249, 250, 251, 0.1);
  }

  .status {
    color: var(--text);
  }

  #controls-panel {
    background: var(--surface);
    border-color: rgba(249, 250, 251, 0.1);
  }

  #controls-panel label {
    color: var(--text);
  }

  #legend-panel {
    background: var(--surface);
    border-color: rgba(249, 250, 251, 0.1);
  }

  #legend-panel h3,
  .legend-item span {
    color: var(--text);
  }

  .legend-color {
    border-color: rgba(249, 250, 251, 0.3);
  }

  .slider {
    background: var(--surface-alt);
  }

  .slider::-webkit-slider-thumb {
    background: var(--accent);
  }

  .slider::-moz-range-thumb {
    background: var(--accent);
    border-color: var(--accent);
  }
}