/* Variables Tresmedia */
:root {
  --primary: #005f8a;           /* azul oscuro Tresmedia */
  --primary-light: #0083b8;
  --bg-card: #ffffff;
  --text-dark: #333333;
  --border: #d1d5db;
  --shadow: rgba(0,0,0,0.1);
}

.calc-frame {
  padding: 1rem;
  box-sizing: border-box;
}

.calculator-container {
  width: 100%;
  max-width: 700px;
  margin: 0 auto;
  background: var(--bg-card);
  border-radius: 6px;
  box-shadow: 0 2px 8px var(--shadow);
  padding: 1.5rem;
  font-family: 'Segoe UI', sans-serif;
  color: var(--text-dark);
}

.calculator-container header h2 {
  margin: 0 0 1rem;
  text-align: center;
  color: var(--primary);
  font-size: 1.5rem;
}

.tabs {
  display: flex;
  border-bottom: 2px solid var(--border);
  margin-bottom: 1rem;
}
.tab {
  flex: 1;
  padding: 0.75rem 0;
  text-align: center;
  cursor: pointer;
  font-weight: 600;
  background: none;
  border: none;
  border-bottom: 3px solid transparent;
  transition: border-color 0.2s;
}
.tab.active {
  border-color: var(--primary);
  color: var(--primary);
}

.form-section {
  display: grid;
  grid-gap: 1rem;
  margin-bottom: 1.5rem;
}

.form-group {
  position: relative;
}
.form-group label {
  display: block;
  margin-bottom: 0.3rem;
  font-weight: 500;
}
.form-group input,
.form-group select {
  width: 100%;
  padding: 0.6rem;
  border: 1px solid var(--border);
  border-radius: 4px;
}

.calc-button {
  width: 100%;
  padding: 0.9rem;
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: 4px;
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
}
.calc-button:hover {
  background: var(--primary-light);
}

.result-summary {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}
.result-card {
  flex: 1 1 30%;
  background: var(--bg-card);
  padding: 0.8rem;
  border-radius: 4px;
  box-shadow: 0 1px 4px var(--shadow);
  text-align: center;
}
.result-card h4 {
  margin: 0 0 0.5rem;
  font-size: 0.9rem;
  color: var(--text-dark);
}
.result-value {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
}

.charts-container {
  display: grid;
  gap: 1rem;
}
@media (min-width: 768px) {
  .charts-container {
    grid-template-columns: 1fr 1fr;
  }
}

/* Ocultar/Mostrar */
.hidden { display: none; }