:root {
  --color-primario: #005bb5;
  --color-secundario: #0077cc;
  --color-fondo: #f4f7fa;
  --color-texto: #333;
  --color-blanco: #ffffff;
  --color-gris-claro: #e0e0e0;
  --color-azul-claro: #f0f4ff;
  --color-shadow: rgba(0, 0, 0, 0.1);
  --fuente-principal: 'Satoshi', sans-serif;
}

body {
  font-family: var(--fuente-principal);
  margin: 0;
  padding: 0;
  background-color: var(--color-fondo);
  color: var(--color-texto);
}

/* === ESTRUCTURA PRINCIPAL === */
header {
  background-color: var(--color-primario);
  color: white;
  padding: 20px;
  text-align: center;
}

header h1 {
  margin: 12px 0 0;
}

.inicio-link {
  display: inline-flex;
  align-items: center;
  padding: 10px 16px;
  border: 1px solid rgba(255, 255, 255, 0.7);
  border-radius: 12px;
  color: white;
  font-weight: 700;
  text-decoration: none;
  transition: background-color 0.2s ease, transform 0.2s ease;
}

.inicio-link:hover {
  background-color: rgba(255, 255, 255, 0.16);
  transform: translateY(-1px);
}

main.contenedor {
  display: flex;
  flex-wrap: wrap;
  gap: 30px;
  padding: 20px;
  justify-content: center;
  max-width: 1200px;
  margin: auto;
}

section.formulario,
  section#resumen-cuotas {
    background-color: var(--color-blanco);
    border-radius: 20px;
    padding: 2.5rem;
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.2);
    flex: 1 1 400px;
  }


  label {
    display: block;
    margin-top: 1.2rem;
    font-weight: 600;
    font-size: 1rem;
    color: var(--color-texto);
  }

  .input-prefijo {
    display: flex;
    align-items: center;
    background-color: var(--color-blanco);
    border-radius: 0.5rem;
    padding: 0.5rem;
  }


  .input-prefijo span {
    margin-right: 0.5rem;
  }

  input[type="number"],
input[type="range"] {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--color-gris-claro);
  border-radius: 0.5rem;
  font-size: 1rem;
}


  .formulario button {
    margin-top: 1.8rem;
    padding: 16px;
    width: 100%;
    background: linear-gradient(90deg, var(--color-primario), var(--color-primario));
    color: white;
    border: none;
    border-radius: 15px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
  }


  .button:hover,
  .boton:hover,
  .formulario button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 15px rgba(94, 93, 240, 0.3);
  }
  #graficoCapacidad {
    max-height: 220px;
    height: 220px !important;
    width: 100% !important;
  }


html, body {
  height: 100%;
  margin: 0;
  display: flex;
  flex-direction: column;
}

main {
  flex: 1;
}


/* === FOOTER === */
footer {
  text-align: center;
  background-color: #f0f0f0;
  padding: 15px;
  font-size: 14px;
  color: #666;
}

/* === BANNER ADS === */
.ads-banner {
  margin: 20px auto;
  max-width: 728px;
  min-height: 90px;
  background-color: #ddd;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #666;
  font-size: 14px;
  border-radius: 8px;
}

.grid-resultados {
  display: grid;
  gap: 1.5rem;
  margin-bottom: 2rem;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.grafico-container {
  margin-top: 2rem;
  background-color: white;
  border-radius: 0.75rem;
  padding: 1rem;
  box-shadow: 0 2px 6px var(--color-shadow);
}