.sub-nav {
    display: flex;
    width: 100%;
    background: linear-gradient(to right, #FFDD11, blue, red);
    position: relative;
    z-index: 1;
}

.sub-nav__tab {
    flex: 1; 
    padding: 0.8rem 0;
    text-align: center;
    text-decoration: none;
    color: var(--color-on-primary);
    font-weight: bold;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.7);
    transition: all 100ms ease;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    border-bottom: 4px solid transparent;
}

.sub-nav__tab:hover {
    background-color: rgba(0, 0, 0, 0.2);
    border-color: var(--color-on-primary);
}

.sub-nav__tab.router-link-active {
    background-color: rgba(0, 0, 0, 0.2);
    border-color: var(--color-on-primary);
}

.dark .sub-nav {
    border-bottom-color: var(--dark-color-background);
}

.dark .sub-nav__tab:hover {
      background-color: rgba(0, 0, 0, 0.2);
}

.dark .sub-nav__tab.router-link-active {
    background-color: rgba(0, 0, 0, 0.3);
}