body {
  padding-top: var(--header-height);  
}

/* ===== Layout ===== */
.main-content {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: stretch;  /* make all flex children equal height */
}

.main-content .left-column {
  flex: 1 1 35%;
  min-width: 250px;
  
  display: flex;          /* let children stretch inside */
  flex-direction: column; /* stack content vertically */
}

.main-content .right-column {
  flex: 1 1 60%;
  min-width: 300px;

  display: flex;          /* let children stretch inside */
  flex-direction: column; /* stack content vertically */
}

/* ===== Responsive Design ===== */
@media (max-width: 768px) {
  .main-content {
    flex-direction: column;
  }

  .main-content .left-column,
  .main-content .right-column {
    flex: 1 1 100%;
  }
  
  .lyrics {
    flex: unset; /* prevent unnecessary stretching on mobile */
  }
}