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

:root {
  background-color: #121212;
  color: #e0e0e0;
  font-family:
    "Segoe UI",
    system-ui,
    -apple-system,
    sans-serif;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 40px 20px;
  min-height: 100vh;
}

fichero {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 450px;
}

regresar {
  display: block;
  width: 100%;
  margin-bottom: 30px;
}

a {
  display: inline-block;
  text-decoration: none;
  background-color: #1b5e20;
  color: #ffffff;
  padding: 10px 20px;
  border-radius: 6px;
  font-weight: 600;
  transition: all 0.3s ease;
}

a:hover {
  background-color: #4caf50;
  color: #121212;
  box-shadow: 0 0 12px rgba(76, 175, 80, 0.4);
  transform: scale(1.03);
}

ficha {
  display: flex;
  flex-direction: column;
  background-color: #1e1e1e;
  border-top: 5px solid #4caf50;
  border-radius: 10px;
  padding: 30px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  gap: 12px;
}

ficha::before {
  content: "ID: " attr(id) " • Fecha de Ingreso: " attr(fechaingreso);
  display: block;
  font-size: 0.85rem;
  color: #a5d6a7;
  text-align: right;
  border-bottom: 1px solid #333;
  padding-bottom: 10px;
  margin-bottom: 10px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

nombre,
apellido,
telefono,
email {
  display: block;
  font-size: 1.1rem;
  line-height: 1.5;
}

nombre::before {
  content: "Nombre: ";
  font-weight: 600;
  color: #4caf50;
}

apellido::before {
  content: "Apellido: ";
  font-weight: 600;
  color: #4caf50;
}

telefono::before {
  content: "Teléfono: ";
  font-weight: 600;
  color: #4caf50;
}

email::before {
  content: "Email: ";
  font-weight: 600;
  color: #4caf50;
}