* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: Arial, sans-serif;
  line-height: 1.6;
  padding: 20px;
}

header {
  background-color: #f4f4f4;
  padding: 20px;
  margin-bottom: 20px;
  border-radius: 5px;
}

.header-fields {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

.field {
  flex: 1;
  display: flex;
  flex-direction: column;
}

label {
  margin-bottom: 5px;
  font-weight: bold;
}

input, select {
  padding: 8px;
  border: 1px solid #ccc;
  border-radius: 4px;
  font-size: 16px;
}

input:read-only {
  background-color: #e6f3ff;
}

.calculators {
  display: flex;
  gap: 20px;
}

section {
  flex: 1;
  padding: 20px;
  background-color: #f9f9f9;
  border-radius: 5px;
  box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

h2 {
  text-align: center;
  margin-bottom: 20px;
  color: #333;
}

.calc-container {
  display: flex;
  flex-direction: column;
  gap: 15px;
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: 5px;
}

.green-bg {
  background-color: #e8f5e9;
}

.red-bg {
  background-color: #ffebee;
}

.blue-bg {
  background-color: #e6f3ff;
}

.itc-label {
  color: #333;
  font-style: italic;
  text-align: center;
  margin: 10px 0;
}

.tabla-container {
  margin-top: 30px;
  text-align: center;
  padding: 20px;
}

.tabla-imagen {
  max-width: 100%;
  height: auto;
  box-shadow: 0 2px 4px rgba(0,0,0,0.2);
  border-radius: 5px;
}