<div class="email-input">
    <input type="email" placeholder="aaron@gmail.com">
    <svg viewBox="0 0 18 18">
        <path d="M11.5,10.5 C6.4987941,17.5909626 1,3.73719105 11.5,6 C10.4594155,14.5485365 17,13.418278 17,9 C17,4.581722 13.418278,1 9,1 C4.581722,1 1,4.581722 1,9 C1,13.418278 4.581722,17 9,17 C13.418278,17 17,13.42 17,9"></path>
        <polyline points="5 9.25 8 12 13 6"></polyline>
    </svg>
</div>

<!-- dribbble - twitter -->
<a class="dribbble" href="https://dribbble.com/ai" target="_blank"><img src="https://cdn.dribbble.com/assets/dribbble-ball-mark-2bd45f09c2fb58dbbfb44766d5d1d07c5a12972d602ef8b32204d28fa3dda554.svg" alt=""></a>
<a class="twitter" target="_blank" href="https://twitter.com/aaroniker_me"><svg xmlns="http://www.w3.org/2000/svg" width="72" height="72" viewBox="0 0 72 72"><path d="M67.812 16.141a26.246 26.246 0 0 1-7.519 2.06 13.134 13.134 0 0 0 5.756-7.244 26.127 26.127 0 0 1-8.313 3.176A13.075 13.075 0 0 0 48.182 10c-7.229 0-13.092 5.861-13.092 13.093 0 1.026.118 2.021.338 2.981-10.885-.548-20.528-5.757-26.987-13.679a13.048 13.048 0 0 0-1.771 6.581c0 4.542 2.312 8.551 5.824 10.898a13.048 13.048 0 0 1-5.93-1.638c-.002.055-.002.11-.002.162 0 6.345 4.513 11.638 10.504 12.84a13.177 13.177 0 0 1-3.449.457c-.846 0-1.667-.078-2.465-.231 1.667 5.2 6.499 8.986 12.23 9.09a26.276 26.276 0 0 1-16.26 5.606A26.21 26.21 0 0 1 4 55.976a37.036 37.036 0 0 0 20.067 5.882c24.083 0 37.251-19.949 37.251-37.249 0-.566-.014-1.134-.039-1.694a26.597 26.597 0 0 0 6.533-6.774z"></path></svg></a>

.email-input {
    --text: #646B8C;
    --text-placeholder: #BBC1E1;
    --icon: #A6ACCD;
    --icon-focus: #646B8C;
    --icon-invalid: #F04949;
    --icon-valid: #16BF78;
    --background: #fff;
    --border: #D1D6EE;
    --border-hover: #A6ACCD;
    --border-focus: #275EFE;
    --shadow-focus: #{rgba(#275EFE, .32)};
    position: relative;
    max-width: 220px;
    input {
        width: 100%;
        -webkit-appearance: none;
        outline: none;
        display: block;
        font-size: 14px;
        font-family: inherit;
        margin: 0;
        padding: 8px 16px 8px 41px;
        line-height: 26px;
        border-radius: 6px;
        color: var(--text);
        border: 1px solid var(--bc, var(--border));
        background: var(--background);
        transition: border-color .3s, box-shadow .3s;
        &::placeholder {
            color: var(--text-placeholder);
        }
    }
    svg {
        width: 16px;
        height: 16px;
        top: 14px;
        left: 14px;
        display: block;
        position: absolute;
        fill: none;
        stroke: var(--i, var(--icon));
        stroke-linecap: round;
        stroke-linejoin: round;
        stroke-width: 1.6;
        transition: stroke .3s;
        path {
            stroke-dasharray: 80;
            stroke-dashoffset: var(--path, 170);
            transition: stroke-dashoffset .5s ease var(--path-delay, .3s);
        }
        polyline {
            stroke-dasharray: 12;
            stroke-dashoffset: var(--tick, 12);
            transition: stroke-dashoffset .45s ease var(--tick-delay, 0s);
        }
    }
    &:hover {
        --bc: var(--border-hover);
    }
    &:focus-within {
        --bc: var(--border-focus);
        --i: var(--icon-focus);
        input {
            box-shadow: 0 1px 6px -1px var(--shadow-focus);
        }
    }
    &:not(.valid) {
        input {
            &:not(:placeholder-shown) {
                &:not(:focus) {
                    & + svg {
                        --i: var(--icon-invalid);
                    }
                }
            }
        }
    }
    &.valid {
        --i: var(--icon-valid);
        --path: 132;
        --path-delay: 0s;
        --tick: 0;
        --tick-delay: .3s;
    }
}

html {
    box-sizing: border-box;
    -webkit-font-smoothing: antialiased;
}

* {
    box-sizing: inherit;
    &:before,
    &:after {
        box-sizing: inherit;
    }
}

// Center & dribbble
body {
    min-height: 100vh;
    display: flex;
    font-family: 'Inter UI', 'Inter', Arial;
    justify-content: center;
    align-items: center;
    background: #F6F8FF;
    .email-input {
        width: 100%;
    }
    .dribbble {
        position: fixed;
        display: block;
        right: 20px;
        bottom: 20px;
        img {
            display: block;
            height: 28px;
        }
    }
    .twitter {
        position: fixed;
        display: block;
        right: 64px;
        bottom: 14px;
        svg {
            width: 32px;
            height: 32px;
            fill: #1da1f2;
        }
    }
}

const regex = new RegExp(
    '^(([^<>()[\\]\\\\.,;:\\s@\\"]+(\\.[^<>()[\\]\\\\.,;:\\s@\\"]+)*)|' +
    '(\\".+\\"))@((\\[[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\.[0-9]{1,3}\\])' +
    '|(([a-zA-Z\\-0-9]+\\.)+[a-zA-Z]{2,}))$'
);

document.querySelectorAll('.email-input').forEach(container => {

    let input = container.querySelector('input')

    input.addEventListener('keyup', e => container.classList.toggle('valid', regex.test(input.value)))

});