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

nav li {
    list-style: none;
}

img {
    display: block;
}

p, h1, h2, h3, h4, h5, h6 {
    margin: 0;
}

a,
a:visited {
    color: unset;
    text-decoration: none;
}

:root {
    --blue: hsl(223, 87%, 63%);
    --pale-blue: hsl(223, 100%, 88%);
    --light-red: hsl(354, 100%, 66%);
    --gray: rgb(150, 150, 150);
    --very-dark-blue: hsl(209, 33%, 12%);
}

body {
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align: center;

    font-family: 'Libre Franklin', Helvetica, sans-serif;
}

main {
    display: flex;
    flex-direction: column;
    align-items: center;
}

h1 {
    font-size: 0;
}

#logo {
    height: auto;
    width: 65px;

    margin: 85px auto 45px;
}

h2 {
    color: var(--gray);
    font-size: 1.5rem;
    font-weight: 300;
}

h2 span {
    color: var(--very-dark-blue);
    font-weight: 700;
}

h3 {
    font-size: .75rem;
    font-weight: 300;

    padding-top: 1rem;
}

form {
    margin-top: 2rem;

    display: flex;
    flex-direction: column;
    position: relative;
}

input {
    border: 1px solid var(--pale-blue);
    border-radius: 20px;
    font-size: .75rem;
    margin-bottom: 10px;
    padding-left: 1rem;

    height: 2.5rem;
    width: 280px;
}

input:focus,
input:active,
input:hover,
input:focus-visible {
    border: 1px solid var(--blue);
}

input::placeholder{
    color: var(--pale-blue);
    font-size: .75rem;
}

#message {
    position: absolute;
    top: -1rem;
    left: 1rem;

    font-size: .75rem;
    font-style: italic;
}

.success {
    color: rgb(4, 128, 0);
}

.error {
    color: var(--light-red);
}

#btn-notify {
    height: 2.5rem;
    width: 280px;

    background-color: var(--blue);
    border: none;
    border-radius: 30px;
    cursor: pointer;
    color: #fff;
    font-size: .75rem;
    font-weight: 600;
    filter: drop-shadow(0 4px 4px rgba(79, 125, 243, .5));
}

#dashboard {
    height: auto;
    width: 85%;

    margin: 2.5rem auto 2.5rem;
}

#nav-socials {
    display: flex;
    justify-content: space-between;
    width: 120px;
}

.links-socials {
    border: 1px solid rgba(150, 150, 150, .25);
    border-radius: 50%;
    padding: 7px;

    transition: all .2s;
}

.icons {
    height: 15px;
    width: 15px;
    object-fit: contain;
}

.links-socials:hover {
    background-color: var(--blue);
    border-color: var(--blue);
}

.links-socials:hover img {
    filter: brightness(10);
}

.attribution {
    font-size: .75rem;
    margin-top: 2rem;
}

@media only screen and (min-width: 43.75rem) {

    #logo {
        width: 90px;

        margin: 90px auto 50px;
    }

    h2 {
        font-size: 2rem;
    }

    h3 {
        font-size: 1rem;
    }

    form {
        margin-top: 2.5rem;
        display: block;
    }

    input {
        border-radius: 30px;
        font-size: 1rem;
        height: 3.5rem;
        margin: 0 1rem 0 0;
        padding-left: 1.75rem;
        width: 420px;
    }

    input::placeholder{
        font-size: 1rem;
    }

    #btn-notify {
        height: 3.5rem;
        width: 12.5rem;

        border-radius: 30px;
        filter: drop-shadow(0 7px 7px rgba(79, 125, 243, .5));
    }

    #dashboard {
        margin: 6rem auto 4.5rem;
        width: 40rem;
    }

    #message {
        top: 4rem;
        left: 1.75rem;

        font-size: .8rem;
    }

}