/* Header */
.site-header {
    position: relative;
    padding: 20px 40px;
}

.site-header_container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-logo {
    font-size: 25px;
    font-weight: 700;
}

/* Navigation */
.main-menu {
    display: flex;
    gap: 30px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.main-menu a {
    position: relative;
    font-size: 15px;
    transition: color 0.3s ease;
}

.main-menu a::after {
    content: "";
    position: absolute;
    left: 0;
    bottom: -6px;
    width: 100%;
    height: 2px;
    background-color: var(--color-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.3s ease;
}

.main-menu a:hover,
.main-menu a:focus-visible {
    color: var(--color-accent);
}

.main-menu a:hover::after,
.main-menu a:focus-visible::after {
    transform: scaleX(1);
}

/* Mobile menu button */
.menu-toggle {
    display: none;
}

/*responsive
/* Mobile */
@media (max-width: 640px) {

    .site-header {
        padding: 20px;
    }

    .menu-toggle {
        width: 35px;
        height: 25px;
        padding: 0;
        display: flex;
        flex-direction: column;
        justify-content: space-between;
        background: none;
        border: none;
        cursor: pointer;
    }

    .menu-toggle_line {
        width: 100%;
        height: 2px;
        background: var(--color-text);
    }

    .main-navigation {
        display: none;
    }

    .main-navigation.open {
        display: block;
        position: absolute;
        top: 100%;
        left: 0;
        width: 100%;
        padding: 25px 20px;
        background: var(--color-surface);
        z-index: 100;
    }

    .main-menu {
        flex-direction: column;
        gap: 20px;
    }
}