/* Header Styles */
.site-header {
    padding: 15px 0;
    background-color: var(--background);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.logo-img {
    height: 50px;
    width: auto;
}

.main-nav {
    display: flex;
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-menu li {
    position: relative;
    margin-left: 25px;
}

.nav-menu a {
    color: var(--text-color);
    font-weight: 500;
    font-size: 1rem;
    padding: 10px 0;
    display: block;
    position: relative;
}

.nav-menu a:after {
    content: '';
    display: block;
    width: 0;
    height: 2px;
    background-color: var(--primary-color);
    transition: width 0.3s ease;
    position: absolute;
    bottom: 5px;
    left: 0;
}

.nav-menu a:hover:after,
.nav-menu li.active a:after {
    width: 100%;
}

/* Dropdown Menu */
.has-dropdown {
    position: relative;
}

.dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    background-color: var(--background);
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    min-width: 200px;
    border-radius: 4px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all 0.3s ease;
    z-index: 10;
    padding: 10px 0;
    list-style: none;
}

.has-dropdown:hover .dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.dropdown li {
    margin: 0;
}

.dropdown a {
    padding: 10px 20px;
    font-size: 0.9rem;
    color: var(--text-color);
    transition: all 0.3s ease;
}

.dropdown a:hover {
    background-color: var(--light-bg);
    color: var(--primary-color);
}

.dropdown a:after {
    display: none;
}

/* Mobile Menu Toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 30px;
    height: 20px;
    cursor: pointer;
}

.mobile-menu-toggle span {
    display: block;
    height: 3px;
    width: 100%;
    background-color: var(--primary-color);
    border-radius: 3px;
    transition: all 0.3s ease;
}

/* Responsive Header */
@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: flex;
    }

    .main-nav {
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        height: calc(100vh - 80px);
        background-color: var(--background);
        padding: 20px;
        transform: translateX(-100%);
        transition: transform 0.3s ease;
        z-index: 9;
        overflow-y: auto;
    }

    .main-nav.open {
        transform: translateX(0);
    }

    .nav-menu {
        flex-direction: column;
    }

    .nav-menu li {
        margin: 0 0 15px 0;
    }

    .nav-menu a {
        font-size: 1.1rem;
    }

    .dropdown {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        margin-top: 10px;
        display: none;
    }

    .has-dropdown.open .dropdown {
        display: block;
    }

    .dropdown a {
        padding-left: 40px;
    }
}