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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, sans-serif;
  background: #1a1a2e;
  color: #eee;
  min-height: 100vh;
}

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1rem;
}

header {
  text-align: center;
  padding: 1rem 0 1.5rem;
}

header h1 {
  font-size: 1.8rem;
  font-weight: 600;
  margin-bottom: 0.25rem;
}

.subtitle {
  color: #888;
  font-size: 0.95rem;
}

main {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
}

/* Map Container */
.map-container {
  flex: 1;
  background: #16213e;
  border-radius: 12px;
  padding: 1rem;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

#map {
  width: 100%;
  height: auto;
  display: block;
}

/* Controls Sidebar */
.controls {
  width: 220px;
  background: #16213e;
  border-radius: 12px;
  padding: 1.25rem;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.control-group {
  margin-bottom: 1.25rem;
}

.control-group:last-child {
  margin-bottom: 0;
}

.control-group label {
  display: block;
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: #888;
  margin-bottom: 0.5rem;
}

.selected-info {
  background: #0f3460;
  padding: 0.6rem 0.8rem;
  border-radius: 6px;
  font-size: 0.9rem;
  font-family: monospace;
}

/* Color Picker */
#color-picker {
  width: 100%;
  height: 40px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  background: none;
}

#color-picker::-webkit-color-swatch-wrapper {
  padding: 0;
}

#color-picker::-webkit-color-swatch {
  border: 2px solid #0f3460;
  border-radius: 6px;
}

/* Color Palette */
.color-palette {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.5rem;
}

.color-btn {
  width: 100%;
  aspect-ratio: 1;
  border: 2px solid #0f3460;
  border-radius: 6px;
  cursor: pointer;
  transition: transform 0.15s, border-color 0.15s;
}

.color-btn:hover {
  transform: scale(1.1);
  border-color: #3a51a3;
}

/* Action Buttons */
.actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.btn {
  width: 100%;
  padding: 0.7rem 1rem;
  border: none;
  border-radius: 6px;
  background: #0f3460;
  color: #eee;
  font-size: 0.85rem;
  cursor: pointer;
  transition: background 0.2s;
}

.btn:hover {
  background: #3a51a3;
}

/* Responsive */
@media (max-width: 800px) {
  main {
    flex-direction: column;
  }

  .controls {
    width: 100%;
  }

  .color-palette {
    grid-template-columns: repeat(8, 1fr);
  }

  .actions {
    flex-direction: row;
  }
}