.smart-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
    transition: background 0.3s ease, box-shadow 0.3s ease;
    font-family: 'Inter', sans-serif;
}
.smart-header.sticky {
    background: #fff;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
}

.smart-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem;
    max-width: 1200px;
    margin: auto;
}

.smart-logo img {
    height: 40px;
}

.smart-nav {
    display: none;
}

.smart-menu {
    list-style: none;
    padding: 0;
    margin: 0;
}

.smart-menu li {
    margin: 1rem 0;
}

.smart-menu a {
    text-decoration: none;
    color: #333;
    font-size: 1.2rem;
}

.smart-menu-toggle {
    background: none;
    border: none;
    font-size: 2rem;
    cursor: pointer;
}

@media (max-width: 768px) {
    .smart-nav.open {
        display: block;
        position: absolute;
        top: 70px;
        right: 0;
        background: #fff;
        width: 75%;
        height: 100vh;
        box-shadow: -2px 0 5px rgba(0,0,0,0.2);
        padding: 2rem;
    }
}

@media (min-width: 769px) {
    .smart-menu-toggle {
        display: none;
    }

    .smart-nav {
        display: block !important;
    }

    .smart-menu {
        display: flex;
        gap: 2rem;
    }

    .smart-menu li {
        margin: 0;
    }
}

/* Themes */
.smartheader-theme-dhl .smart-header {
    background-color: #ffe600;
}
.smartheader-theme-dhl .smart-menu a {
    color: #000;
}

.smartheader-theme-ups .smart-header {
    background-color: #351c15;
}
.smartheader-theme-ups .smart-menu a {
    color: #fff;
}

.smartheader-theme-fedex .smart-header {
    background-color: #4d148c;
}
.smartheader-theme-fedex .smart-menu a {
    color: #ff6600;
}