/* Base64 Encoder/Decoder Specific Styles */
.tool-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

@media (max-width: 900px) {
  .tool-grid { grid-template-columns: 1fr; }
}

.mode-toggle {
  display: flex;
  gap: 2px;
  background: var(--color-bg-input);
  border-radius: var(--border-radius-md);
  padding: 2px;
}

.mode-btn {
  padding: var(--spacing-xs) var(--spacing-md);
  background: transparent;
  border: none;
  color: var(--color-text-secondary);
  cursor: pointer;
  border-radius: var(--border-radius-sm);
  transition: all var(--transition-fast);
  font-size: 0.875rem;
}

.mode-btn.active {
  background: var(--color-primary);
  color: var(--color-bg-dark);
}

.file-drop-zone {
  border: 2px dashed var(--color-border);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-2xl);
  text-align: center;
  transition: all var(--transition-fast);
  cursor: pointer;
}

.file-drop-zone:hover,
.file-drop-zone.dragover {
  border-color: var(--color-primary);
  background: rgba(0, 255, 65, 0.05);
}

.file-drop-zone svg {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-md);
}

.file-label {
  color: var(--color-primary);
  cursor: pointer;
  text-decoration: underline;
}

.output-info {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}