:root {
    --title: "Cyberspace Portal";
    --author: "Matt Cannon";
    --contact: "mc@mattcannon.design";
    --description: "An interactive card featuring a mesmerizing glow effect that invites you to enter a portal. Once activated, you are unexpectedly sucked into the matrix, traveling through a digital tunnel filled with floating code snippets and particles, immersing you in a journey through cyberspace.";
    --keywords: "card glow, portal, interactive card, box-shadow, 3D tunnel, Three.js, animation, CSS animation, JavaScript animation, particle effects, glowing effects, codepenchallenge, cpc-card-glow, immersive web experience";
    --last-modified: "2025-04-15";
    --content-language: "en";
    --generator: "HTML5, CSS3, JavaScript, Three.js, requestAnimationFrames,";
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    overflow: hidden;
    background: url("http://mattcannon.games/codepen/glow/background.png")
    no-repeat center center fixed;
    background-size: cover;
    background-color: #0a0a0a;
    font-family: "Unica One", sans-serif;
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100vh;
    position: relative;
    perspective: 2000px;
}
#portalCard {
position: absolute;
width: 300px;
height: 350px;
background: rgba(10, 12, 18, 0.6);
backdrop-filter: blur(10px);
border-radius: 20px;
border: 1px solid rgba(0, 255, 170, 0.8);
box-shadow: 0 0 30px rgba(0, 255, 170, 0.5), 0 0 50px rgba(0, 179, 255, 0.3),
inset 0 0 20px rgba(0, 255, 170, 0.2);
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
transition: all 2.2s cubic-bezier(0.1, 1, 0.1, 1);
z-index: 10;
overflow: hidden;
transform-style: preserve-3d;
position: relative;
transform: scale(0.85);
}
#portalCard::before {
content: "";
position: absolute;
inset: 0;
border-radius: 19px;
padding: 1px;
background: linear-gradient(135deg, #00ffaa, #00a3ff);
-webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
-webkit-mask-composite: xor;
mask-composite: exclude;
opacity: 0.9;
transition: opacity 1.5s ease;
z-index: 2;
box-shadow: 0 0 20px rgba(0, 255, 170, 1);
}
#portalCard::after {
content: "";
position: absolute;
inset: 0;
border-radius: 20px;
background: linear-gradient(
    135deg,
    rgba(0, 255, 170, 0.15) 0%,
                            rgba(0, 179, 255, 0.15) 100%
);
opacity: 0.5;
z-index: 1;
}
.gooey-effect {
    position: absolute;
    inset: 0;
    border-radius: 20px;
    overflow: hidden;
    z-index: 0;
    opacity: 0.9;
    filter: blur(2px);
}
.gooey-blob {
    position: absolute;
    border-radius: 50%;
    filter: blur(12px);
    animation: float-blob 15s infinite ease-in-out;
    opacity: 0.9;
}
.gooey-blob:nth-child(1) {
    width: 250px;
    height: 250px;
    left: -50px;
    top: 100px;
    background: radial-gradient(
        circle,
        rgba(0, 255, 170, 0.7) 0%,
                                rgba(0, 255, 170, 0) 70%
    );
    animation-duration: 8s;
}

.gooey-blob:nth-child(2) {
    width: 200px;
    height: 200px;
    right: -30px;
    top: 50px;
    background: radial-gradient(
        circle,
        rgba(0, 179, 255, 0.7) 0%,
                                rgba(0, 179, 255, 0) 70%
    );
    animation-duration: 8s;
    animation-delay: -3s;
}
.gooey-blob:nth-child(3) {
    width: 180px;
    height: 180px;
    right: 50px;
    bottom: 100px;
    background: radial-gradient(
        circle,
        rgba(0, 255, 170, 0.7) 0%,
                                rgba(0, 255, 170, 0) 70%
    );
    animation-duration: 10s;
    animation-delay: -4s;
}
.gooey-blob:nth-child(4) {
    width: 220px;
    height: 220px;
    left: 30px;
    bottom: 30px;
    background: radial-gradient(
        circle,
        rgba(0, 179, 255, 0.7) 0%,
                                rgba(0, 179, 255, 0) 70%
    );
    animation-duration: 10s;
    animation-delay: -4s;
}
@keyframes float-blob {
    0%,
    100% {
        transform: translate(0, 0) scale(1);
    }
    20% {
        transform: translate(30px, 20px) scale(1.05);
    }
    40% {
        transform: translate(20px, 40px) scale(0.95);
    }
    60% {
        transform: translate(-20px, 30px) scale(1.1);
    }
    80% {
        transform: translate(-30px, -20px) scale(0.9);
    }
}

#portalCard:hover .cursor-blur {
transform: scale(1);
transition: transform 1s ease-out;
}
#portalCard h1 {
color: white;
font-weight: 300;
font-size: 40px;
margin-bottom: 20px;
text-transform: uppercase;
letter-spacing: 2px;
transition: all 0.8s ease;
text-shadow: 0 0 15px rgba(0, 255, 170, 0.7);
position: relative;
z-index: 5;
line-height: 1;
text-align: center;
}
#portalButton {
padding: 16px 38px;
background: rgba(10, 12, 20, 0.3);
border: 2px solid #00ffaa;
border-radius: 50px;
color: white;
font-family: "Unica One", sans-serif;
font-weight: 400;
font-size: 22px;
letter-spacing: 1px;
cursor: pointer;
transition: all 0.3s ease;
position: relative;
z-index: 20;
backdrop-filter: blur(5px);
overflow: hidden;
box-shadow: 0 0 10px rgba(0, 255, 170, 0.5);
text-shadow: 0 0 5px rgba(0, 255, 255, 0.5);
}
#portalButton::before {
content: "";
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
background: linear-gradient(
    90deg,
    rgba(0, 255, 170, 0.3),
                            rgba(0, 179, 255, 0.3)
);
opacity: 0;
transition: opacity 0.3s ease;
}
#portalButton:hover {
transform: scale(1.05);
box-shadow: 0 0 15px rgba(0, 255, 170, 0.7);
text-shadow: 0 0 10px rgba(0, 255, 255, 0.8);
border-color: #00ffdd;
}
#portalButton:hover::before {
opacity: 1;
}
#tunnelCanvas {
position: absolute;
top: 0;
left: 0;
width: 100%;
height: 100%;
clip-path: circle(10% at 50% 50%);
transition: clip-path 1.8s ease-out;
}
#tunnelCanvas.active {
clip-path: circle(150% at 50% 50%);
}
#portalContent {
transition: all 1.1s ease;
display: flex;
flex-direction: column;
align-items: center;
justify-content: center;
z-index: 5;
}
#tunnelContainer {
position: absolute;
top: 0;
left: 0;
width: 100vw;
height: 100vh;
display: flex;
align-items: center;
justify-content: center;
z-index: 1;
pointer-events: none;
transform-style: preserve-3d;
transition: all 0s;
}
#tunnelContainer.active {
pointer-events: all;
z-index: 15;
}
#portalCard.zoomIn {
transform: translateZ(500px) scale(6);
opacity: 0;
transition: transform 2s ease-out, opacity 1.5s ease-in;
}
#portalCard.zoomIn::before,
#portalCard.zoomIn::after {
opacity: 0;
}
#portalCard.zoomIn #portalContent {
opacity: 0;
transform: scale(0.5);
}
.card-bg {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    opacity: 0.1;
    pointer-events: none;
    z-index: -1;
}