Neon alsó lebegő menü

<nav class="bottom-neon-menu">
    <a href="#" class="bottom-menu-item active">
        <i class="bi bi-house-door-fill"></i>
        <span>Kezdőlap</span>
    </a>

    <a href="#" class="bottom-menu-item">
        <i class="bi bi-grid-fill"></i>
        <span>Projektek</span>
    </a>

    <a href="#" class="bottom-menu-item bottom-menu-main">
        <i class="bi bi-plus-lg"></i>
    </a>

    <a href="#" class="bottom-menu-item">
        <i class="bi bi-person-fill"></i>
        <span>Rólunk</span>
    </a>

    <a href="#" class="bottom-menu-item">
        <i class="bi bi-envelope-fill"></i>
        <span>Kapcsolat</span>
    </a>
</nav>

.bottom-neon-menu {
    width: max-content;
    min-width: 420px;

    margin: 0 auto;
    padding: 10px 14px;

    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;

    background: rgba(8, 13, 19, 0.96);

    border: 1px solid rgba(46, 204, 113, 0.16);
    border-radius: 24px;

    box-shadow:
        0 18px 45px rgba(0, 0, 0, 0.35),
        0 0 28px rgba(46, 204, 113, 0.06);
}

.bottom-menu-item {
    position: relative;

    min-width: 72px;
    height: 58px;

    padding: 0 12px;

    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 4px;

    color: #667383;

    text-decoration: none;

    border-radius: 16px;

    transition:
        color 0.3s ease,
        background 0.3s ease,
        transform 0.3s ease;
}

.bottom-menu-item i {
    font-size: 17px;

    transition:
        color 0.3s ease,
        transform 0.3s ease;
}

.bottom-menu-item span {
    font-size: 10px;
    letter-spacing: 0.4px;
}

.bottom-menu-item:hover {
    color: #ffffff;
    background: rgba(255, 255, 255, 0.035);
}

.bottom-menu-item:hover i {
    color: #2ecc71;
    transform: translateY(-2px);
}

.bottom-menu-item.active {
    color: #ffffff;
    background: rgba(46, 204, 113, 0.08);
}

.bottom-menu-item.active::after {
    content: "";

    position: absolute;
    left: 50%;
    bottom: 5px;

    width: 18px;
    height: 2px;

    border-radius: 5px;

    background: #2ecc71;

    transform: translateX(-50%);

    box-shadow:
        0 0 8px rgba(46, 204, 113, 0.7);
}

.bottom-menu-item.active i {
    color: #2ecc71;
}

.bottom-menu-main {
    min-width: 58px;
    width: 58px;
    height: 58px;

    margin: 0 7px;

    border-radius: 50%;

    color: #06100a;

    background: #2ecc71;

    border: 4px solid #0b1118;

    box-shadow:
        0 0 0 1px rgba(46, 204, 113, 0.45),
        0 0 22px rgba(46, 204, 113, 0.28);

    transform: translateY(-15px);

    transition:
        background 0.3s ease,
        box-shadow 0.3s ease,
        transform 0.3s ease;
}

.bottom-menu-main i {
    font-size: 20px;
}

.bottom-menu-main:hover {
    color: #06100a;

    background: #48e383;

    transform: translateY(-18px);

    box-shadow:
        0 0 0 1px rgba(46, 204, 113, 0.7),
        0 0 30px rgba(46, 204, 113, 0.42);
}

@media (max-width: 520px) {
    .bottom-neon-menu {
        min-width: 0;
        width: calc(100% - 24px);
    }

    .bottom-menu-item {
        min-width: 52px;
        padding: 0 7px;
    }

    .bottom-menu-item span {
        display: none;
    }

    .bottom-menu-main {
        min-width: 58px;
    }
}

document.querySelectorAll(".bottom-neon-menu").forEach(menu => {
    menu.querySelectorAll(".bottom-menu-item").forEach(item => {
        item.addEventListener("click", function () {
            menu.querySelectorAll(".bottom-menu-item").forEach(link => {
                link.classList.remove("active");
            });

            if (!this.classList.contains("bottom-menu-main")) {
                this.classList.add("active");
            }
        });
    });
});

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