@import url('https://fonts.googleapis.com/css2?family=Montserrat&display=swap');
@import url('https://fonts.googleapis.com/css2?family=Bungee&display=swap');

:root {
    --light-color: #ecf0f1;
    --dark-color: #000;
    --success-color: #2ecc71;
    --background-color: #34495e;
    --black-shadow: 0 0 0 0.2rem rgba(0, 0, 0, 0.25);
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Montserrat', sans-serif;
}

body {
    background-color: var(--background-color);
    color: var(--light-color);
}

button {
    padding: 0;
    border: none;
    color: inherit;
    background-color: transparent;
}

.btn {
    display: inline-block;
    border: solid 1px transparent;
    border-radius: 0.5em;
    padding: 0.6em 1.5em;
    color: var(--dark-color);
    background-color: var(--light-color);
    font-size: 1.5rem;
    transition: color 0.3s ease-in-out, border-color 0.3s ease-in-out,
        background-color 0.3s ease-in-out, box-shadow 0.3s ease-in-out;
}

.btn:active {
    transform: translateY(1px);
}

.btn:focus,
input:focus {
    outline: none;
    border-color: var(--dark-color);
    box-shadow: var(--black-shadow);
}

.btn:hover {
    color: var(--light-color);
    border-color: currentColor;
    background-color: transparent;
}

.container {
    margin: 4rem auto;
    display: grid;
    place-items: center;
}

label {
    display: block;
    font-size: 1.2rem;
    cursor: pointer;
}

input {
    display: block;
    background-color: var(--light-color);
    font-size: 1.2rem;
    width: 100%;
    border: 1px solid lightgrey;
    margin-top: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 5px;
    transition: border-color 0.15s ease-in-out, box-shadow 0.15s ease-in-out;
}

input:hover {
    border-color: var(--dark-color);
}

.column-span-all {
    grid-column: 1 / -1;
}

.gameboard {
    width: 80vw;
    height: 80vw;
    max-width: 702px;
    max-height: 702px;
    margin-bottom: 3rem;
    background-color: var(--light-color);
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
}

.gameboard > div {
    font-family: 'Bungee', cursive;
    color: var(--dark-color);
    display: grid;
    place-items: center;
    border: 2px solid black;
    font-size: 9rem;
}

.btn-grid,
.form-grid {
    display: grid;
    grid-gap: 26px;
}

.btn-grid {
    grid-template-columns: repeat(3, 1fr);
}

.form-grid {
    grid-template-areas: "input1 input2"
                         "btn1    btn2";
}

.form-grid label:first-of-type {
    grid-area: input1;
}

.form-grid label:nth-of-type(2) {
    grid-area: input2;
}

.form-grid button:first-of-type {
    grid-area: btn1;
}

.form-grid button:nth-of-type(2) {
    grid-area: btn2;
}

.announcer {
    font-size: 3rem;
    margin-bottom: 3rem;
    font-weight: 400;
    text-align: center;
}

.toggle-content {
    display: none;
}

.toggle-content.is-visible {
    display: block;
}

.highlight {
    background-color: var(--success-color);
}

.info-section {
    margin-top: 3rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.info-section > p {
    margin-bottom: 1rem;
    font-size: 1.2rem;
}

.github-link {
    transition: 0.3s;
}

.github-link:hover {
    filter: invert(30%);
    transform: scale(1.1);
}

@media only screen and (max-width: 650px) {
    .container {
        margin: 2rem;
    }

    .gameboard > div {
        font-size: 18vw;
    }

    .btn-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .column-span-all {
        grid-column: initial;
    }
}

@media only screen and (max-width: 550px) {
    .btn-grid {
        grid-template-columns: 1fr;
    }

    .announcer {
        font-size: 2rem;
    }

    .form-grid {
        grid-template-areas: "input1"
                             "input2"
                             "btn1"
                             "btn2";
    }
}

@media only screen and (max-height: 800px) {
    .form-grid {
        grid-template-areas: "btn1"
                             "btn2"
                             "input1"
                             "input2";
    }
}