.main-navigation ul {
    display: flex;
    gap: 15px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.main-navigation li {
    position: relative;
}

.main-navigation a {
    font-weight: 600;
    font-size: 13px;
    text-transform: uppercase;
    color: #ffffff;
    padding: var(--spacing-8) 0;
    transition: var(--transition-fast);
    text-decoration: none;
    display: block;
}

.main-navigation a:hover,
.main-navigation li.active > a {
    color: var(--color-secondary);
}

/* Underline effect for active/hover on top level only */
.main-navigation > ul > li > a::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 0;
    height: 2px;
    background-color: var(--color-secondary);
    transition: var(--transition-normal);
}

.main-navigation > ul > li > a:hover::after,
.main-navigation > ul > li.active > a::after {
    width: 100%;
}

/* --- Submenu Dropdown Logic --- */
.main-navigation ul ul {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    background-color: #ffffff;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    min-width: 220px;
    z-index: 1000;
    padding: 10px 0;
    border-radius: 4px;
    flex-direction: column;
    gap: 0;
}

.main-navigation li:hover > ul {
    display: flex;
}

.main-navigation ul ul li {
    width: 100%;
}

.main-navigation ul ul a {
    color: var(--color-primary) !important;
    padding: 10px 20px;
    font-size: 12px;
    text-transform: none;
}

.main-navigation ul ul a:hover,
.main-navigation ul ul li.active > a {
    background-color: #f8fafc;
    color: var(--color-secondary) !important;
}