/* Používáme intuitivní výpočet rozměrů prvků. */

:root {
  --primary-color: rgb(16, 16, 223);
  --secondary-color: rgb(34, 194, 34);
}

*,
*:before,
*:after {
  box-sizing: border-box;
}

html {
  font-family: sans-serif;
}

body {
  margin: 3rem;
  background-color: var(--primary-color);
}

.container {
  max-width: 40rem;
  margin-right: auto;
  margin-left: auto;
  border: 2px solid var(--primary-color);
  background-color: #fff;
  border-radius: 6px;
  padding: 3rem;
}

h1 {
  color: var(--primary-color);
  margin-top: 0;
}

#email__conversion {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.email__conversion--firstname,
.email__conversion--surname {
  display: flex;
  flex-direction: column;
}

label {
  cursor: pointer;
}

input {
  height: 2rem;
  width: 400px;
  max-width: 100%;
  border: 2px solid var(--primary-color);
  border-radius: 4px;
}

#button-submit {
  width: 160px;
  padding: 0.5rem 1rem;
  font-size: 1rem;
  letter-spacing: 1px;
  border: 2px solid var(--primary-color);
  border-radius: 4px;
  background-color: var(--primary-color);
  color: #fff;
  cursor: pointer;
}

#button-submit:hover {
  background-color: var(--secondary-color);
  border: 2px solid var(--secondary-color);
  padding: 0.6rem;
}

.email__result {
  margin-top: 2rem;
}

.paragraph {
  font-size: 1.2rem;
}

.paragraph span {
  color: var(--secondary-color);
  font-weight: bold;
}