:root {
    --nav-padding: 24px;
    --nav-profile-btn-size: 32px;
    --nav-border-radius: 75px;
    /*--nav-background-filter: blur(234px);*/
    /*--nav-background: linear-gradient(90deg, rgb(255, 255, 255, 0.14), rgb(255, 255, 255, 0.14));*/
    /*--nav-border: 1px solid rgba(0, 0, 0, 0.32);*/

    --nav-background-filter: blur(7px) saturate(100%);
    --nav-background: linear-gradient(135deg, rgba(255, 255, 255, 0.05), rgba(255, 255, 255, 0.05));
    --nav-border: 1px solid rgba(255, 255, 255, 0.3);
    /*--nav-border: 1px solid rgba(255, 255, 255, 0.1);*/
    --nav-box-shadow: inset 0 0 30px rgba(255, 255, 255, 0.1), 0 8px 32px rgba(0, 0, 0, 0.2);

    --nav-content-padding: 12px 25px;
    --nav-content-height: 56px;
    --nav-btn-border-radius: 100px;
    --nav-little-margin-start: 17px;
    --nav-big-margin-start-start: 66px;
    --nav-little-btn-padding: 8px 25px;
    --nav-big-btn-padding: 8px 36px;
    --nav-link-color: rgba(195, 195, 195, 1);
    /*--nav-link-color-hover: rgba(255, 255, 255, 1);*/
    --nav-link-color-hover: rgba(217, 44, 13, 1);
    --nav-transition: all .3s;
}

.header {
    width: 100%;
    z-index: 100;
    margin: 0 auto;
    position: fixed;
    padding: var(--padding-nav);
}

.header_div {
    display: flex;
    overflow: hidden;
    position: relative;
    flex-direction: row;
    align-items: center;
    border: var(--nav-border);
    justify-content: space-between;
    height: var(--nav-content-height);
    background: var(--nav-background);
    box-shadow: var(--nav-box-shadow);
    padding: var(--nav-content-padding);
    border-radius: var(--nav-border-radius);
    backdrop-filter: var(--nav-background-filter);
    -webkit-backdrop-filter: var(--nav-background-filter);
}

/*.header_div::before {*/
/*    content: "";*/
/*    position: absolute;*/
/*    top: -50%;*/
/*    left: -50%;*/
/*    width: 200%;*/
/*    height: 200%;*/
/*    background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.4), transparent 60%);*/
/*    transform: rotate(180deg);*/
/*    opacity: 0.5;*/
/*}*/

.header-logo-link {
    display: flex;
}

.header-navigation {
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: end;
}

.sign-up-btn, .sign-in-btn, .header-nav-link {
    font-size: 16px;
    font-weight: 500;
    line-height: 14px;
    text-align: center;
    text-decoration: none;
    transition: var(--nav-transition);
}

.sign-up-btn {
    margin-inline-start: var(--nav-little-margin-start);
    border-radius: var(--nav-btn-border-radius);
    background-color: var(--dark-btn-color);
    padding: var(--nav-big-btn-padding);
    color: var(--light-text-color);
}

.sign-up-btn:hover, .sign-up-btn:focus {
    background-color: var(--dark-btn-color-hover);
}

.sign-up-btn:active {
    background-color: var(--dark-btn-color-active);
}

.sign-in-btn {
    margin-inline-start: var(--nav-big-margin-start-start);
    border-radius: var(--nav-btn-border-radius);
    background-color: var(--light-btn-color);
    padding: var(--nav-little-btn-padding);
    color: var(--dark-btn-color);
}

.sign-in-btn:hover, .sign-in-btn:focus {
    background-color: var(--light-nav-btn-color-hover);
}

.sign-in-btn:active {
    background-color: var(--light-nav-btn-color-active);
}

.header-nav-link {
    margin-inline-start: var(--nav-big-margin-start-start);
    color: var(--nav-link-color);
    line-height: 21px;
}

.header-nav-link:hover, .header-nav-link:focus, .header-nav-link:active {
    color: var(--nav-link-color-hover);
}

.header-navigation > img {
    margin-inline-start: var(--nav-big-margin-start-start);
}

.profile-btn {
    margin-inline-start: var(--nav-little-margin-start);
    background-color: var(--light-btn-color);
    height: var(--nav-profile-btn-size);
    width: var(--nav-profile-btn-size);
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    display: flex;
}

.profile-btn:hover, .profile-btn:focus {
    background-color: var(--light-nav-btn-color-hover);
}

.profile-btn:active {
    background-color: var(--light-nav-btn-color-active);
}