.heatmap-wrapper {
  margin: 1rem 0;
  width: 100%;
  padding: 0;
  box-sizing: border-box;
}

.heatmap {
  width: 100%;
  height: auto;
  min-height: 250px;
  box-sizing: border-box;
  margin: 0 auto;
}

@media screen and (min-width: 768px) {
  .heatmap {
    min-height: 280px;
  }
}

.heatmap-year-buttons {
  width: 100%;
  display: grid;
  box-sizing: border-box;
  gap: 0.5rem;
  margin-bottom: 1rem;
  grid-auto-flow: column;
  justify-content: flex-end;
  direction: rtl;
}

.heatmap-year-buttons button {
  border-radius: 0.5rem;
  background-color: var(--primary);
  color: var(--secondary);
  cursor: pointer;
  padding: 0.5rem 1rem;
  margin: 0;
  font-size: 0.9rem;
  font-weight: 600;
  border: 1px solid var(--primary);
  transition: all 0.2s ease;
  max-width: 100px;
  direction: ltr;
}

.heatmap-year-buttons button:hover {
  background-color: var(--secondary);
  color: var(--primary);
  border-color: var(--secondary);
}

/* 다크 모드 */
@media (prefers-color-scheme: dark) {
  .heatmap {
    background-color: var(--code-bg);
    border: 1px dotted var(--primary);
    border-radius: 0.5rem;
  }
  
  .heatmap-year-buttons button {
    background-color: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
  }
  
  .heatmap-year-buttons button:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: var(--primary);
  }
}

/* 라이트 모드 */
@media (prefers-color-scheme: light) {
  .heatmap {
    background-color: #f5f5f5;
    border: 1px solid #ddd;
    border-radius: 0.5rem;
  }
  
  .heatmap-year-buttons button {
    background-color: #fff;
    border: 1px solid #ddd;
    color: #333;
  }
  
  .heatmap-year-buttons button:hover {
    background-color: #f0f0f0;
    border-color: #999;
  }
}