@import url('https://fonts.googleapis.com/css2?family=Poly:opsz,wght@12..96,200..800&family=Poly:ital,wght@0,100;0,200;0,300;0,400;0,500;0,600;0,700;0,800;0,900;1,100;1,200;1,300;1,400;1,500;1,600;1,700;1,800;1,900&family=Roboto+Slab:wght@100..900&display=swap');

:root {
    background-color: hsl(0, 0%, 20%);
    font-size: 60%;
}

* {
    box-sizing: border-box;
    font-family: 'Poly', sans-serif;
    margin: 0;
    padding: 0;
    color: #ecf5ff;
}

h1,
h2,
h3,
h4 {
    margin-bottom: 1rem;
}

h1 {
    font-size: 4.8rem;
    margin-bottom: 5rem;
    color: #56a5eb;
}

h1 > span {
    font-size: 2rem;
    font-weight: 500;
}

h2 {
    font-size: 3.8rem;
    margin-bottom: 3rem;
    font-weight: 700;
}

h3 {
    font-size: 2.4rem;
    font-weight: 500;
}

.container {
    width: 100vw;
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    max-width: 80rem;
    margin: 0 auto;
    padding: 2rem;
}

.container > * {
    width: 100%;
}

.flex-column {
    display: flex;
    flex-direction: column;
}

.flex-center {
    justify-content: center;
    align-items: center;
}

.justify-center {
    justify-content: center;
}

.text-center {
    text-align: center;
}

.hidden {
    display: none;
}

.btn {
    font-size: 1.4rem;
    padding: 1rem 0;
    width: 20rem;
    text-align: center;
    border: 0.1rem solid #56a5eb;
    border-radius: 8px;
    margin-bottom: 1rem;
    text-decoration: none;
    color: #56a5eb;
    background-color: white;
}

.btn:hover {
    cursor: pointer;
    box-shadow: 0 0.4rem 1.4rem 0 rgba(86, 185, 235, 0.5);
    transform: translateY(-0.1rem);
    transition: transform 150ms;
}

.btn[disabled]:hover {
    cursor: not-allowed;
    box-shadow: none;
    transform: none;
}

form {
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
}

input {
    margin-bottom: 1rem;
    color: hsl(0, 0%, 20%);
    width: 20rem;
    padding: 1.5rem;
    font-size: 1.8rem;
    border: none;
    border-radius: 8px;
    box-shadow: 0 0.1rem 1.4rem 0 rgba(86, 185, 235, 0.5);
}

ul {
    font-size: 2rem;
    margin-left: 35px;
}

input::placeholder {
    color: #56a5eb;
}
@media screen and (max-width: 650px) {
    h1 {
        text-align: center;
        justify-content: center;
    }
    ul {
        margin-left: 20px;
        font-size: 1.5rem;
    }
}