.ce-columns {
  position: relative;
  margin-bottom: 10px;
  background-color: var(--card-bg);
  border-radius: 4px;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.12);
  transition: all 0.3s ease;
}

.ce-columns:hover {
  box-shadow: 0 3px 6px rgba(0, 0, 0, 0.15);
}

/* Read-only specific styles */
.ce-columns--readonly {
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}

.ce-columns--readonly:hover {
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.08);
}

.ce-columns-toolbar {
  display: flex;
  padding: 8px 16px;
  background-color: var(--secondary-bg);
  border-bottom: 1px solid var(--card-border);
  border-top-left-radius: 4px;
  border-top-right-radius: 4px;
  justify-content: space-between;
  align-items: center;
}

.ce-columns-count {
  display: flex;
  gap: 8px;
}

.ce-columns-button {
  background: var(--card-bg);
  border: 1px solid var(--card-border);
  border-radius: 4px;
  padding: 4px 8px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.ce-columns-button span {
  font-size: 10px;
  opacity: 0.7;
}

.ce-columns-button:hover {
  background-color: var(--secondary-hover-bg);
}

.ce-columns-button--active {
  background-color: var(--accent-subtle);
  border-color: var(--primary);
  color: var(--primary);
}

.ce-columns-ratio {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
}

.ce-columns-ratio-select {
  padding: 4px 8px;
  border: 1px solid var(--card-border);
  border-radius: 4px;
  background-color: var(--card-bg);
  font-size: 12px;
}

.ce-columns-container {
  display: flex;
  padding: 16px;
  gap: 16px;
}

.ce-column {
  flex: 1;
  min-height: 100px;
  border: 1px dashed var(--card-border);
  border-radius: 4px;
  padding: 8px;
  transition: all 0.2s ease;
}

.ce-column:hover {
  border-color: var(--focus-border);
  background-color: var(--secondary-bg);
}

/* Read-only column styles */
.ce-column--readonly {
  border: 1px solid var(--card-border);
  background-color: var(--card-bg);
}

.ce-column--readonly:hover {
  border-color: var(--card-border);
  background-color: var(--card-bg);
}

.ce-column-editor {
  min-height: 80px;
}

.ce-column-content {
  height: 100%;
  min-height: 80px;
}

.ce-column-placeholder {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100%;
  min-height: 80px;
  color: #94a3b8;
  font-style: italic;
  font-size: 14px;
  text-align: center;
}

@media (max-width: 768px) {
  .ce-columns-container {
    flex-direction: column;
  }

  .ce-column {
    margin-bottom: 16px;
  }

  .ce-columns-toolbar {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }

  .ce-columns-ratio {
    width: 100%;
  }

  .ce-columns-ratio-select {
    flex-grow: 1;
  }
}