:root {
  --color-principal: #4a6fa5;         /* Azul grisáceo moderno */
  --color-secundario: #f9f9f9;        /* Fondo gris muy claro */
  --color-texto: #333333;             /* Gris oscuro legible */
  --color-menu: #e4e8ef;              /* Gris azulado claro */
  --color-hover: #bfc9dd;             /* Azul pastel suave para hover */
  --color-header: #f1f3f5;            /* Blanco grisáceo para encabezado */
  --shadow: 0 2px 10px rgba(0, 0, 0, 0.04);
}


body {
  background: var(--color-secundario);
  font-family: "Nunito", sans-serif;
  margin: 0;
  padding: 0;
}

.ac-title {
  text-align: center;
  color: var(--color-principal);
  font-size: 3em;
  font-weight: 800;
  margin-top: 1.2em;
  margin-bottom: 1.7em;
  letter-spacing: 1px;
}

.acordeon {
  max-width: 1200px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.1em;
}

.ac-item {
  border: 2px solid var(--color-menu);
  border-radius: 12px;
  background: #fff;
  overflow: hidden;
  transition: box-shadow 0.2s ease-in-out;
}

.ac-item:hover {
  box-shadow: 0 4px 15px rgba(74, 111, 165, 0.15);
}

.ac-toggle {
  background: none;
  border: none;
  width: 100%;
  text-align: left;
  font-size: 1.33em;
  font-weight: 600;
  color: var(--color-principal);
  padding: 1.1em 1.2em;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.6em;
  transition: background 0.12s, color 0.16s;
}

.ac-toggle .ti {
  font-size: 1.2em;
  color: var(--color-principal);
  margin-right: 0.2em;
}

.ac-toggle.active {
  background: var(--color-header);
  color: var(--color-texto);
}

.ac-panel {
  display: none;
  padding: 1.3em 2em;
  background: #f0f2f5;
  border-top: 1px solid #d3d9e2;
  animation: fadeIn 0.4s ease-in-out;
}

.ac-item.open .ac-panel {
  display: block;
}

.ac-list {
  list-style: none;
  padding-left: 0;
  margin: 0;
}

.ac-list li {
  display: flex;
  align-items: center;
  gap: 0.65em;
  padding: 0.45em 0;
  color: #3b4863;
  font-size: 1.08em;
  border-bottom: 1px solid #e0e4ea;
}

.ac-list li:last-child {
  border-bottom: none;
}

.ac-list .ti {
  color: var(--color-principal);
  font-size: 1.1em;
}

/* Botón de matrícula */
.matricula {
  border: 2px solid var(--color-principal);
  border-radius: 15px 0 15px 0;
  padding: 1.5em;
  width: 450px;
  background-color: #ffffff;
  margin: 2em auto;
  text-align: center;
  box-shadow: 0 4px 12px var(--shadow);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.matricula:hover {
  transform: translateY(-3px);
  box-shadow: 0 6px 16px rgba(44, 44, 44, 0.12);
}

.matricula a {
  text-decoration: none;
  color: var(--color-principal);
  font-size: 1.2em;
  font-weight: bold;
  display: inline-block;
  padding: 0.6em 1.2em;
  border: 2px solid var(--color-principal);
  border-radius: 8px;
  background-color: var(--color-hover);
  transition: background 0.3s ease, color 0.3s ease;
}

.matricula a:hover {
  background-color: var(--color-principal);
  color: #fff;
}

/* Animación fadeIn */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

/* Responsive */
@media (max-width: 700px) {
  .ac-title {
    font-size: 1.7em;
    margin-top: 1em;
    margin-bottom: 1em;
  }

  .ac-toggle {
    font-size: 1em;
    padding: 0.9em 0.7em;
  }

  .ac-panel {
    padding: 1em 0.8em;
    font-size: 0.99em;
  }

  .matricula {
    width: 90%;
    padding: 1.2em;
  }

  .matricula a {
    font-size: 1em;
    padding: 0.5em 1em;
  }
}