header {
    position: fixed !important;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    z-index: 1050;
    background-color: var(--background-color) !important;
    box-shadow: 0 4px 25px rgba(0, 0, 0, 0.08);
}

.navbar {
    background-color: var(--background-color) !important;
}

.header-link,
header .navbar .navbar-nav a,
header .navbar .nav-link,
.navbar-brand,
#theme-toggle,
.navbar-toggler {
    color: var(--text-color) !important;
}

#theme-toggle,
.navbar-toggler {
    background-color: var(--secondary-background-color) !important;
    border-color: rgba(255, 255, 255, 0.15) !important;
}

#theme-toggle {
    border-radius: 0.5rem;
}

.navbar-toggler-icon {
    filter: invert(1) !important;
}

.navbar .nav-link:hover,
.navbar .nav-link:focus,
.navbar-brand:hover,
.navbar-brand:focus {
    color: var(--text-link-color) !important;
}

#profileHeader {
    width: 100%;
}

#content {
    padding-top: 90px;
}

.showHeaderOnTop {
    position: fixed !important;
    top: 0;
}