style.css

* {
    margin: 0;
    box-sizing: border-box;
    text-decoration: none;
    font-family: 'Ubuntu', sans-serif;
    outline: none;
    letter-spacing: 1px;
}

body {
    --accent: #0079FF;
    --accent-hover: #3d95f8;
    --no-result-clr: #F74646;
    min-height: 100vh;
    color: var(--font-clr);
    background-color: var(--primary-clr);
}

.dark {
    --primary-clr: #141D2F;
    --secondary-clr: #1E2A47;
    --font-clr: #FFF;
    --font-clr-disabled: #9A9A9A;
}

.light {
    --primary-clr: #F6F8FF;
    --secondary-clr: #FEFEFE;
    --font-clr: #343434;
    --font-clr-disabled: #787878;
}

a {
    color: var(--font-clr);
}

body.light form,
body.light .container {
    box-shadow: 0px 16px 30px -10px rgba(70, 96, 187, 0.1986);
    ;
}

main {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.25rem;
}

header,
form,
.container {
    width: min(620px, 90%);
    margin: 0 auto;
}

header {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

#toggle-theme-btn {
    border: none;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 1.2px;
    color: var(--font-clr);
    background-color: transparent;
    cursor: pointer;
}

form {
    padding: .5rem;
    border-radius: .75rem;
    display: flex;
    align-items: center;
    gap: .7rem;
    background-color: var(--secondary-clr);
}

.fa-search {
    font-size: 1.25rem;
    color: var(--accent);
    margin-left: 1rem;
}

#input {
    color: var(--font-clr);
    flex-grow: 1;
    font-size: 1rem;
    border: none;
    background-color: var(--secondary-clr);
}

input[type="submit"] {
    font-size: 1rem;
    font-weight: 500;
    padding: 1rem 1.5rem;
    border-radius: .7rem;
    border: none;
    color: #FFF;
    background-color: var(--accent);
    cursor: pointer;
    transition: all .1s ease-in;
}

input[type="submit"]:hover {
    box-shadow: inset 0 0 0 3px var(--accent);
    background-color: var(--accent-hover);
}

.container {
    min-height: 415px;
    padding: 2rem;
    border-radius: .5rem;
    background-color: var(--secondary-clr);
}

.not-found {
    height: 100%;
    display: none;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
}

.not-found > img {
    width: 70%;
}

.not-found > p {
    font-size: 1.1rem;
    font-weight: 500;
}

.result {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

#profile {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

#profile-img {
    height: 125px;
    aspect-ratio: 1 / 1;
    border-radius: 50%;
}

.profile-info-container>* {
    margin: .5rem 0;
}

#username {
    color: var(--accent);
    transition: all .1s ease-in;
}

#username:hover {
    color: var(--accent-hover);
}

#bio {
    line-height: 1.5;
}

#stats {
    padding: 1rem;
    background-color: var(--primary-clr);
    border-radius: .75rem;
    display: flex;
    align-items: center;
    justify-content: space-evenly;
    gap: 1rem;
}

.stat-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: .5rem;
}

.stat-title {
    font-size: .9rem;
}

.stat-count {
    font-size: 1.25rem;
    font-weight: 700;
}

#info {
    display: grid;
    grid-template-columns: 1fr 1fr;
    grid-gap: 1rem;
}

.disabled {
    color: var(--font-clr-disabled);
    cursor: not-allowed;
}

.info-group>i {
    color: var(--accent);
    margin-right: .2rem;
}

.footer {
    padding: 2rem .5rem;
    background-color: var(--secondary-clr);
    text-align: center;
    letter-spacing: 1px;
}

.footer p {
    margin: 0;
    font-size: 1.1rem;
}

.footer p>a {
    color: var(--accent);
    font-weight: bold;
}

.social {
    margin-top: 1rem;
}

.social a {
    margin: .5em;
    font-size: 1.75em;
    color: var(--font-clr);
}

.social a:hover {
    color: var(--accent);
}

i {
    transition: all .2s ease-out;
}

.social a:hover i {
    transform: scale(1.2);
}

@media (max-width: 600px) {
    main {
        padding: 1.2rem 0;
    }
    
    form {
        padding-left: .7rem;
        gap: .5rem;
    }

    #input {
        max-width: 50%;
        margin-right: auto;
    }

    .fa-search {
        margin-left: 0;
    }

    #profile-img {
        height: 100px;
    }

    #info {
        grid-template-columns: 1fr;
    }

    .info-group>span {
        letter-spacing: 1.5px;
    }
}