:root {
    --bg-color: #F8F1E5;
    --text-color: #000;
}

[data-theme="dark"] {
    --bg-color: #252A39;
    --text-color: #fff;
}

html {
    height: 100vh;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    margin: 0;
    font-family: Verdana, sans-serif;
    font-size: 1em;
    height: 100%;
    box-sizing: border-box;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    align-items: stretch;
    transition: background-color 0.3s ease, color 0.3s ease;
}

main {
    margin: 0 1em 0;
    display: flex;
    flex-direction: column;
    align-items: center;
}

button {
    cursor: pointer;
}

label {
    pointer-events: none;
}

input, button {
    background-color: #fff;
    border-radius: 1em;
    border: none;
    padding: 1em 1.5em;
    box-shadow: -5px 5px 5px 0 rgba(0,0,0,0.75);
    margin: 2em;
    transition: all 0.3s;
}

input:hover, button:hover {
    padding: 1em 2em;
}

input:focus {
    border: none;
    outline: none;
    padding: 1.5em 2em;
    margin: 1.5em 2em;
}

h1 {
    margin-top: 3em;
    display: flex;
    align-items: center;
}

section {
    margin: 0 0 3em;
    display: flex;
    flex-wrap: wrap;
    justify-content: space-evenly;
}

img {
    width: 64px;
    margin: 0.5em;
}

main a {
    background-color: #fff;
    padding: 1.5em 1.5em;
    border-radius: 1em;
    box-shadow: -5px 5px 5px 0 rgba(0,0,0,0.75);
    color: #000;
    text-decoration: none;
    transition: all 0.3s;
    margin-bottom: 3em;
}

main a:hover {
    padding: 1.5em 2em;
}

main div#alert {
    width: calc(100% + 2em);
    position: fixed;
    background-color: #91ff69;
    opacity: 0;
}

main div#alert p {
    margin: 1em 2em;
}

footer {
    background-color: #252A39;
    width: calc(100% - 6em);
    padding: 3em;
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    margin-top: auto;
}

footer a {
    text-decoration: none;
    max-width: 220px;
    margin: 0 0.5em;
    color: #fff;
    display: flex;
    justify-content: center;
    align-items: center;
}