body {
  margin-top: 0 !important;
  padding-top: 0 !important;
}
.navbar-brand { font-weight: 600; }
.table td, .table th { vertical-align: middle; }
.badge { font-size: 0.85rem; }

.linea .form-control,
.linea .form-select {
  padding: 0.35rem 0.5rem;
  height: calc(1.9rem + 2px);
  font-size: 0.9rem;
}

.linea input[readonly] {
  background-color: #f8f9fa;
}

.linea {
  border-bottom: 1px solid #eee;
  padding-bottom: 4px;
}

.descripcion-linea {
  resize: none;              /* que no pueda estirarse a mano */
  overflow: hidden;          /* sin scroll */
  white-space: pre-wrap;     /* respeta saltos */
  word-wrap: break-word;     /* corta palabras largas */
}

@media (max-width: 768px) {
  .linea .col-md-1, .linea .col-md-2, .linea .col-md-3 {
    margin-bottom: 0.4rem;
  }
}