Neon Glass Context Menu

index.html

<main id="app">

    <header>
        <h1>Neon Glass Context menu</h1>
        <p>Right-click to open</p>
    </header>
    
    <footer class="dark">
        <h2>Pick your own colors!</h2>
        <input type=range id="h1" min=0 max=360 value=255 />
        <input type=range id="h2" min=0 max=360 value=222 />
    </footer>
    
</main>

<aside id="menu" class="open dark">
    <span class="shine shine-top"></span>
    <span class="shine shine-bottom"></span>
    <span class="glow glow-top"></span>
    <span class="glow glow-bottom"></span>
    <span class="glow glow-bright glow-top "></span>
    <span class="glow glow-bright glow-bottom "></span>
    
    <div class="inner">
        
        <label>
            <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="size-6">
                <path stroke-linecap="round" stroke-linejoin="round" d="m21 21-5.197-5.197m0 0A7.5 7.5 0 1 0 5.196 5.196a7.5 7.5 0 0 0 10.607 10.607Z" />
            </svg>
            <input type="text" placeholder="type a command or search" />
        </label>
        
        <section>
            <header>Suggestions</header>
            <ul>
                <li class="selected">
                    <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1" stroke="currentColor">
                      <path stroke-linecap="round" stroke-linejoin="round" d="M6.75 3v2.25M17.25 3v2.25M3 18.75V7.5a2.25 2.25 0 0 1 2.25-2.25h13.5A2.25 2.25 0 0 1 21 7.5v11.25m-18 0A2.25 2.25 0 0 0 5.25 21h13.5A2.25 2.25 0 0 0 21 18.75m-18 0v-7.5A2.25 2.25 0 0 1 5.25 9h13.5A2.25 2.25 0 0 1 21 11.25v7.5" />
                    </svg> 
                    Calendar
                </li>
                <li>
                    <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="size-6">
                      <path stroke-linecap="round" stroke-linejoin="round" d="M15.75 15.75V18m-7.5-6.75h.008v.008H8.25v-.008Zm0 2.25h.008v.008H8.25V13.5Zm0 2.25h.008v.008H8.25v-.008Zm0 2.25h.008v.008H8.25V18Zm2.498-6.75h.007v.008h-.007v-.008Zm0 2.25h.007v.008h-.007V13.5Zm0 2.25h.007v.008h-.007v-.008Zm0 2.25h.007v.008h-.007V18Zm2.504-6.75h.008v.008h-.008v-.008Zm0 2.25h.008v.008h-.008V13.5Zm0 2.25h.008v.008h-.008v-.008Zm0 2.25h.008v.008h-.008V18Zm2.498-6.75h.008v.008h-.008v-.008Zm0 2.25h.008v.008h-.008V13.5ZM8.25 6h7.5v2.25h-7.5V6ZM12 2.25c-1.892 0-3.758.11-5.593.322C5.307 2.7 4.5 3.65 4.5 4.757V19.5a2.25 2.25 0 0 0 2.25 2.25h10.5a2.25 2.25 0 0 0 2.25-2.25V4.757c0-1.108-.806-2.057-1.907-2.185A48.507 48.507 0 0 0 12 2.25Z" />
                    </svg>
                    Calculator
                </li>
                <li>
                    <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="size-6">
                      <path stroke-linecap="round" stroke-linejoin="round" d="M7.5 8.25h9m-9 3H12m-9.75 1.51c0 1.6 1.123 2.994 2.707 3.227 1.129.166 2.27.293 3.423.379.35.026.67.21.865.501L12 21l2.755-4.133a1.14 1.14 0 0 1 .865-.501 48.172 48.172 0 0 0 3.423-.379c1.584-.233 2.707-1.626 2.707-3.228V6.741c0-1.602-1.123-2.995-2.707-3.228A48.394 48.394 0 0 0 12 3c-2.392 0-4.744.175-7.043.513C3.373 3.746 2.25 5.14 2.25 6.741v6.018Z" />
                    </svg>
                    Messages
                </li>
            </ul>
        </section>
        
        <hr>
        
        <section>
            <header>Settings</header>
            <ul>
                <li>
                    <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="size-6">
                      <path stroke-linecap="round" stroke-linejoin="round" d="M17.982 18.725A7.488 7.488 0 0 0 12 15.75a7.488 7.488 0 0 0-5.982 2.975m11.963 0a9 9 0 1 0-11.963 0m11.963 0A8.966 8.966 0 0 1 12 21a8.966 8.966 0 0 1-5.982-2.275M15 9.75a3 3 0 1 1-6 0 3 3 0 0 1 6 0Z" />
                    </svg>
                    Profile
                </li>
                <li>
                    <svg xmlns="http://www.w3.org/2000/svg" fill="none" viewBox="0 0 24 24" stroke-width="1.5" stroke="currentColor" class="size-6">
                      <path stroke-linecap="round" stroke-linejoin="round" d="M2.25 8.25h19.5M2.25 9h19.5m-16.5 5.25h6m-6 2.25h3m-3.75 3h15a2.25 2.25 0 0 0 2.25-2.25V6.75A2.25 2.25 0 0 0 19.5 4.5h-15a2.25 2.25 0 0 0-2.25 2.25v10.5A2.25 2.25 0 0 0 4.5 19.5Z" />
                    </svg>
                    Billing
                </li>
            </ul>
        </section>
        
    </div>
    
</aside>

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neon-glass-context-menu.markdown

Neon Glass Context Menu

Using CSS Variables to control two hues, and applying these hues as a border effects around a glass menu.

Some advanced techniques with filters and blending to create the electric-pop effect. Sadly I couldn't achieve it with pseudo-elements as the masks & blending modes wont layer on elements inside of each other.

Inspired by the Tweet; https://twitter.com/AndreaMontini/status/1910680760752668782

A Pen by Simon Goellner on CodePen.

License.

script.js

const $menu = document.getElementById('menu');
const $li = $menu.querySelectorAll('li');
const $hue1 = document.querySelector('#h1');
const $hue2 = document.querySelector('#h2');

document.addEventListener("contextmenu", (event) => {
    
    const menuBox = $menu.getBoundingClientRect();
    const bodyBox = { width: window.innerWidth, height: window.innerHeight }
    const target = {  x: event.clientX, y: event.clientY }
    const padding = { x: 30, y: 20 }
    
    const hitX = target.x + menuBox.width >= bodyBox.width - padding.x;
    const hitY = target.y + menuBox.height >= bodyBox.height - padding.y;
    
    if ( hitX ) {
        target.x = bodyBox.width - menuBox.width - padding.x;
    }
    
    if ( hitY ) {
        target.y = bodyBox.height - menuBox.height - padding.y;
    }
    
    const $target = event.target;
    const isMenu = $menu.contains( $target );
    event.preventDefault();
    
    if( !isMenu ) {
        $menu.style.left = target.x + 'px';
        $menu.style.top = target.y + 'px';
        $menu.classList.add('open');
        $li.forEach($el => {
          $el.classList.remove('selected');  
        })
    }
    
});

document.addEventListener('pointerdown', (event) => {
    const $target = event.target;
    const isMenu = $menu.contains( $target );
    const isSlider = $target.matches( 'input' );
    
    if( !isMenu && !isSlider ) {
        $menu.classList.remove('open');
    } else if (isMenu) {
        $li.forEach($el => {
          $el.classList.remove('selected');  
        })
        if ( $target.matches('li') ) {
            $target.classList.add('selected');
        }
    }
});

$hue1.addEventListener( 'input', (event) => {
    requestAnimationFrame(() => {
        document.body.style.setProperty('--hue1', event.target.value );
        $menu.classList.add('open');
    })
});
$hue2.addEventListener( 'input', (event) => {
    requestAnimationFrame(() => {
        document.body.style.setProperty('--hue2', event.target.value );
        $menu.classList.add('open');
    })
});

const rand1 = 120 + Math.floor(Math.random() * 240);
const rand2 = rand1 - 80 + (Math.floor(Math.random() * 60) - 30);
$hue1.value = rand1;
$hue2.value = rand2;
document.body.style.setProperty('--hue1', rand1 );
document.body.style.setProperty('--hue2', rand2 );

style.css

:root {
    /* vars */
    
    --hue1: 255;
    --hue2: 222;
    --border: 1px;
    --border-color: hsl(var(--hue2), 12%, 20%);
    --radius: 22px;
    
    --ease: cubic-bezier(0.5, 1, 0.89, 1);
}

#menu {
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    transition-property: visibility, opacity, filter;
    transition-duration: 0s, 0.25s, 0.25s, 0.25s;
    transition-delay: 0.5s, 0s, 0s, 0s;
    transition-timing-function: var(--ease);
    filter: blur(4px);
    
    font-family: 'Asap', sans-serif;
    color: #737985;
    
    position: fixed;
    top: 140px;
    left: 2svw;
    min-width: 275px;
    min-height: 275px;
    border-radius: var(--radius);
    border: var(--border) solid var(--border-color);
    padding: 1em;
    background: linear-gradient(235deg, hsl(var(--hue1) 50% 10% / 0.8), hsl(var(--hue1) 50% 10% / 0) 33%), linear-gradient(45deg , hsl(var(--hue2) 50% 10% / 0.8), hsl(var(--hue2) 50% 10% / 0) 33%), linear-gradient(hsl(220deg 25% 4.8% / 0.66));
    backdrop-filter: blur(12px);
    box-shadow: hsl(var(--hue2) 50% 2%) 0px 10px 16px -8px, hsl(var(--hue2) 50% 4%) 0px 20px 36px -14px;
}

#menu:not(.open)::before,
#menu:not(.open)::after,
#menu:not(.open) .glow {
    opacity: 0;
    pointer-events: none;
    animation: glowoff 0.25s var(--ease) both;
}


#menu.open {
    
    visibility: visible;
    opacity: 1;
    pointer-events: auto;
    transition-delay: 0s;
    filter: blur(0px); 
    
    &::before,
    &::after,
    & .glow,
    & .shine {
        animation: glow 1s var(--ease) both;
    }
    & .shine {
        animation-delay: 0s;
        animation-duration: 2s;
    }
    & .glow {
        animation-delay: 0.2s;
    }
    & .glow-bright {
        animation-delay: 0.1s;
        animation-duration: 1.5s;
    }
    & .shine-bottom {
        animation-delay: 0.1s;
        animation-duration: 1.8s;
    }
    & .glow-bottom {
        animation-delay: 0.3s;
    }
    & .glow-bright.glow-bottom {
        animation-delay: 0.3s;
        animation-duration: 1.1s;
    }
}

#menu .shine,
#menu .glow {
    --hue: var(--hue1);
}
#menu .shine-bottom,
#menu .glow-bottom {
    --hue: var(--hue2);
    --conic: 135deg;
}

#menu .shine {
}

#menu .shine,
#menu .shine::before,
#menu .shine::after {
    
    pointer-events: none;
    
    border-radius: 0;
    border-top-right-radius: inherit;
    border-bottom-left-radius: inherit;
    border: 1px solid transparent;
    
    width: 75%;
    height: auto;
    min-height: 0px;
    aspect-ratio: 1;
    display: block;
    position: absolute;
    right: calc(var(--border) * -1);
    top: calc(var(--border) * -1);
    left: auto;
    
    z-index: 1;
    
    --start: 12%;
    background: conic-gradient(
        from var(--conic, -45deg) at center in oklch,
        transparent var(--start,0%), hsl( var(--hue), var(--sat,80%), var(--lit,60%)), transparent  var(--end,50%) 
    ) border-box;
    
    mask: 
        linear-gradient(transparent), 
        linear-gradient(black);
    mask-repeat: no-repeat;
    mask-clip: padding-box, border-box;
    mask-composite: subtract;
    
}

#menu .shine::before,
#menu .shine::after {
    content: "";
    width: auto;
    inset: -2px;
    mask: none;
}
    
#menu .shine::after { 
    z-index: 2;
    --start: 17%;
    --end: 33%;
    background: conic-gradient(
        from var(--conic, -45deg) at center in oklch,
        transparent var(--start,0%), hsl( var(--hue), var(--sat,80%), var(--lit,85%)), transparent var(--end,50%) 
    );
    
}

#menu .shine-bottom {
    top: auto;
    bottom: calc(var(--border) * -1);
    left: calc(var(--border) * -1);
    right: auto;
}

#menu .glow {
    
    pointer-events: none;
    
    border-top-right-radius: calc(var(--radius) * 2.5);
    border-bottom-left-radius: calc(var(--radius) * 2.5);
    border: calc(var(--radius) * 1.25) solid transparent;
    inset: calc(var(--radius) * -2);
    
    width: 75%;
    height: auto;
    min-height: 0px;
    aspect-ratio: 1;
    display: block;
    position: absolute;
    left: auto;
    bottom: auto;
    
    mask: url('https://assets.codepen.io/13471/noise-base.png');
    mask-mode: luminance;
    mask-size: 29%;
    
    opacity: 1;
    filter: blur(12px) saturate(1.25) brightness(0.5);
    mix-blend-mode: plus-lighter;
    z-index: 3;
    
    &.glow-bottom {
        inset: calc(var(--radius) * -2);
        top: auto;
        right: auto;
    }
    
    &::before, 
    &::after {
        content: "";
        position: absolute;
        inset: 0;
        border: inherit;
        border-radius: inherit;
        background: conic-gradient(
            from var(--conic, -45deg) at center in oklch,
            transparent var(--start,0%), hsl( var(--hue), var(--sat,95%), var(--lit,60%)), transparent  var(--end,50%) 
        ) border-box;
        mask: 
            linear-gradient(transparent), 
            linear-gradient(black);
        mask-repeat: no-repeat;
        mask-clip: padding-box, border-box;
        mask-composite: subtract;
        filter: saturate(2) brightness(1);
        
    }
    
    &::after {
        --lit: 70%;
        --sat: 100%;
        --start: 15%;
        --end: 35%;
        border-width: calc(var(--radius) * 1.75);
        border-radius: calc(var(--radius) * 2.75);
        inset: calc(var(--radius) * -0.25);
        z-index: 4;
        opacity: 0.75;
    }
    &.glow-bottom::after {
    }

}

#menu .glow-bright {
    
    --lit: 80%;
    --sat: 100%;
    --start: 13%;
    --end: 37%;
    
    border-width: 5px;
    border-radius: calc(var(--radius) + 2px);
    inset: -7px;
    left: auto;
    filter: blur(2px) brightness(0.66);
    
    &::after {
        content: none;
    }
    
    &.glow-bottom {
        inset: -7px;
        right: auto;
        top: auto;
    }
}

#menu .inner,
#menu section {
    display: flex;
    flex-direction: column;
    gap: 0.5em;
}

#menu .inner {
    font-size: 0.875rem;
}

#menu hr {
    width: 100%;
    height: 0.5px;
    background: var(--border-color);
    border: none;
    margin: 0.25em 0 0.5em;
    opacity: 0.66;
}

#menu input {
    --tint2: hsl(var(--hue2) 50% 90% / 0.1);
    font-family: 'Asap', sans-serif;
    font-weight: 300;
    box-shadow: 0 0 0 1px transparent;
    border: 1px solid hsl(var(--hue2) 13% 18.5% / 0.5);
    background: hsl(var(--hue1) 0% 40% / 0.05);
    border-radius: calc(var(--radius) * 0.33333);
    padding-left: 2.33em;
}

#menu label {
    display: grid;
    grid-template: 1fr/1fr;
    margin-bottom: 1em;
    width: 100%;
    & > * {
        grid-area: 1/1;
        align-self: center;
    }
    
    & svg {
        margin-left: 0.5em;
        opacity: 0.5;
    }
}

#menu header {
    font-size: 0.75rem;
    font-weight: 300;
    padding: 0 0.66em;
}

#menu ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

#menu li {
    position: relative;
    padding: 0.66em;
    height: 32px;
    display: flex;
    align-items: center;
    gap: 0.5em;
    border-radius: calc(var(--radius) * 0.33333);
    border: 1px solid transparent;
    transition: all 0.3s ease-in, --item-opacity 0.3s ease-in;
    background: 
        linear-gradient(
            90deg  in oklch, 
            hsl(var(--hue1) 29% 13% / var(--item-opacity)),
            hsl(var(--hue1) 30% 15% / var(--item-opacity)) 24% 32%, 
            hsl(var(--hue1) 5% 7% / var(--item-opacity))
        ) border-box;
    
    &::after {
        content: "";
        position: absolute;
        inset: 0;
        border-radius: inherit;
        border: inherit;
        background: 
            linear-gradient(
                90deg  in oklch, 
                hsl(var(--hue1) 15% 16% / var(--item-opacity)),
                hsl(var(--hue1) 40% 24% / var(--item-opacity)) 20% 32%, 
                hsl(var(--hue1) 2% 12% / var(--item-opacity))
            ) border-box;
        mask: 
            linear-gradient(transparent), 
            linear-gradient(black);
        mask-repeat: no-repeat;
        mask-clip: padding-box, border-box;
        mask-composite: subtract;
    }
        
    &:hover,
    &.selected,
    &:hover::after,
    &.selected::after {
        --item-opacity: 0.5;
        transition: all 0.1s ease-out, --item-opacity 0.1s ease-out;
        color: white;
    }
    
    &.selected,
    &.selected::after {
        animation: flash 0.75s ease-out 1 forwards;
    }
}

@property --item-opacity {
    syntax: "<number>";
    inherits: false;
    initial-value: 0;
}


body {
    background: #08090d;
    background-image: url(https://assets.codepen.io/13471/abstract-light.jpg), linear-gradient(to right in oklab, hsl(var(--hue2) 50% 75%), hsl(var(--hue1) 50% 75%));
    background-size: cover;
    background-position: center;
    background-blend-mode: hard-light;
    padding: 0;
}

body, #app {
    min-height: 100svh;
}

#app {
    padding: 2svw;
}

#app > header {
    display: flex;
    gap: 0.5em;
    flex-direction: column;
}

#app > header h1,
#app > header p {
    margin: 0;
    color: color-mix(in oklab, var(--fg) 70%, hsl(var(--hue1) 50% 50%));
}

#app > header p {
    color: color-mix(in oklab, var(--fg) 40%, hsl(var(--hue2) 50% 50%));
}

#app > footer {
    align-self: end;
    max-width: calc(96svw - 200px);
    display: flex;
    flex-wrap: wrap;
    gap: 0.5em;
}

#app > footer h2 {
    width: 100%;
    font-size: 1em;
}

#app > footer [type=range] {
    --tint: hsl( var(--hue2) 66% 50% );
    --tint2: hsl( var(--hue1) 66% 50% );
    width: 320px;
    margin: 0;
}
#app > footer #h1 {
    --tint: hsl( var(--hue1) 66% 50% );
    --tint2: hsl( var(--hue1) 66% 50% );
    --hue: var(--hue1);
    width: 320px;
}
#app > footer #h2 {
    --tint: hsl( var(--hue2) 66% 50% );
    --tint2: hsl( var(--hue2) 66% 50% );
    --hue: var(--hue2);
    width: 320px;
}

@media screen and (max-width: 480px) {
    #app > footer {
        gap: 1em;
    }
}

#app input[type="range"]::-webkit-slider-thumb {
    box-shadow: 0 1px 2px 1px hsl(var(--hue) 66% 20% / 0.5);
}

#app input[type="range"]::-moz-range-thumb {
    box-shadow: 0 1px 2px 1px hsl(var(--hue) 66% 20% / 0.5);
}

#app input[type="range"]::-ms-thumb {
    box-shadow: 0 1px 2px 1px hsl(var(--hue) 66% 20% / 0.5);
}

#menu svg {
    fill: none;
    stroke-width: 1;
    height: 20px;
}



@keyframes glow {
    0% {
        opacity: 0;
    }
    3% {
        opacity: 1;
    }
    10% {
        opacity: 0;
    }
    12% {
        opacity: 0.7;
    }
    16% {
        opacity: 0.3;
        animation-timing-function: var(--ease);
    }
    100% {
        opacity: 1;
        animation-timing-function: var(--ease);
    }
}

@keyframes glowoff {
    to {
        opacity: 0;
    }
}

@keyframes flash {
    0% {
        opacity: 0;
        --item-opacity: 0;
    }
    7% {
        opacity: 0.5;
        --item-opacity: 1;
    }
    14% {
        opacity: 0;
        --item-opacity: 0.5;
    }
    21%, 100% {
        opacity: 1;
        --item-opacity: 1;
    }
}

styles

<link href="https://codepen.io/simeydotme/pen/jEOaeNd/63809857734821de257097bf620e7121.css" rel="stylesheet" />
<link href="https://fonts.bunny.net/css?family=amaranth:400,400i,700,700i|asap-condensed:200,300i,400,400i,600,600i,700,700i,900,900i|asap:200,300i,400,400i,500,500i,600,600i,700,700i,900,900i|kode-mono:400,500,600,700" rel="stylesheet" />

Neon Glass Context Menu