/* ==========================
   Design Settings
========================== */

:root {
    --header-background: #333333;
    --nav-text: #ffffff;
    --nav-active: #e0681b;
    --nav-hover: #e0681b;
    --nav-arrow: #ffffff;
    --nav-arrow-hover: #e0681b;
    --dropdown-background: #ffffff;
    --dropdown-text: #333333;
    --dropdown-hover-background: #e0681b;
    --dropdown-hover-text: #ffffff;
    --contact-background: #ffffff;
    --contact-text: #333333;
    --contact-hover-background: #e0681b;
    --contact-hover-text: #ffffff;
    --mobile-divider: rgba(255, 255, 255, 0.15);
    --header-font-family: Arial, Helvetica, sans-serif;
    --nav-font-size: 18px;
    --nav-font-weight: 400;
    --dropdown-font-size: 18px;
    --dropdown-font-weight: 400;
    --contact-font-size: 18px;
    --contact-font-weight: 700;
    --mobile-nav-font-size: 18px;
    --tablet-nav-font-size: 18px;
    --mobile-contact-font-size: 18px;
    --header-min-height: 120px;
    --header-padding-x: 52px;
    --header-gap: 40px;
    --nav-gap: 44px;
    --nav-link-padding-y: 28px;
    --logo-max-width: 240px;
    --logo-max-height: 100px;
    --dropdown-min-width: 230px;
    --dropdown-link-padding-y: 13px;
    --dropdown-link-padding-x: 20px;
    --dropdown-shadow: 0 12px 30px rgba(0, 0, 0, 0.2);
    --contact-min-width: 100px;
    --contact-min-height: 44px;
    --contact-padding-x: 10px;
}

.visually-hidden,
.main-navigation .expand-subpages span {
    position: absolute;
    width: 1px;
    height: 1px;
    margin: -1px;
    padding: 0;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ==========================
   Header and Logo
========================== */

.site-header {
    display: grid;
    grid-template-columns: minmax(240px, 1fr) auto minmax(240px, 1fr);
    align-items: center;
    gap: var(--header-gap);
    min-height: var(--header-min-height);
    padding: 0 var(--header-padding-x);
    background: var(--header-background);
}

.header-logo {
    justify-self: start;
}

.header-logo a,
.header-logo img {
    display: block;
}

.header-logo img {
    width: auto;
    max-width: var(--logo-max-width);
    max-height: var(--logo-max-height);
}

/* ==========================
   Main Navigation
========================== */

.main-navigation {
    justify-self: center;
}

.main-navigation ul {
    margin: 0;
    padding: 0;
    list-style: none;
}

.main-navigation > ul {
    display: flex;
    align-items: center;
    gap: var(--nav-gap);
}

.main-navigation li {
    position: relative;
    margin: 0;
    padding: 0;
    list-style: none;
}

.main-navigation li::marker {
    content: "";
}

.main-navigation li > span {
    display: block;
}

.main-navigation a {
    display: block;
    padding: var(--nav-link-padding-y) 0;
    color: var(--nav-text);
    font-family: var(--header-font-family);
    font-size: var(--nav-font-size);
    font-weight: var(--nav-font-weight);
    line-height: 1;
    text-decoration: none;
    transition: color 0.2s ease;
}

.main-navigation li.active > span > a,
.main-navigation li:hover > span > a,
.main-navigation li:focus-within > span > a {
    color: var(--nav-active);
}

.main-navigation a:focus-visible,
.main-navigation button:focus-visible,
.header-menu-toggle:focus-visible,
.button-light:focus-visible {
    outline: 3px solid #ffffff;
    outline-offset: 3px;
}

/* ==========================
   Dropdown Controls
========================== */

.main-navigation .has-child {
    display: flex;
    align-items: center;
}

.main-navigation .expand-subpages {
    position: relative;
    display: block;
    flex: 0 0 20px;
    width: 20px;
    height: 20px;
    margin: 0 0 0 7px;
    padding: 0;
    border: 0;
    background: transparent;
    cursor: pointer;
}

.main-navigation .expand-subpages::after {
    content: "";
    position: absolute;
    top: 4px;
    left: 4px;
    width: 8px;
    height: 8px;
    border-right: 2px solid var(--nav-arrow);
    border-bottom: 2px solid var(--nav-arrow);
    transform: rotate(45deg);
    transition: border-color 0.2s ease, transform 0.2s ease;
}

.main-navigation .has-child:hover > .expand-subpages::after,
.main-navigation .has-child:focus-within > .expand-subpages::after,
.main-navigation .has-child.is-submenu-open > .expand-subpages::after {
    border-color: var(--nav-arrow-hover);
}

.main-navigation .has-child.is-submenu-open > .expand-subpages::after {
    transform: translateY(4px) rotate(225deg);
}

/* ==========================
   Dropdown Menus
========================== */

.main-navigation .navigation-submenu {
    position: absolute;
    z-index: 1000;
    top: 100%;
    left: 0;
    min-width: var(--dropdown-min-width);
    overflow: visible;
    background: var(--dropdown-background);
    box-shadow: var(--dropdown-shadow);
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity 0.2s ease, visibility 0.2s ease, transform 0.2s ease;
}

.main-navigation .navigation-submenu .navigation-submenu {
    top: 0;
    left: 100%;
    transform: translateX(8px);
}

.main-navigation .has-child:hover > .navigation-submenu,
.main-navigation .has-child:focus-within > .navigation-submenu,
.main-navigation .has-child.is-submenu-open > .navigation-submenu {
    opacity: 1;
    visibility: visible;
    transform: translate(0, 0);
}

.main-navigation .navigation-submenu li {
    display: flex;
    align-items: center;
    min-width: var(--dropdown-min-width);
    background: transparent;
}

.main-navigation .navigation-submenu li > span {
    flex: 1 1 auto;
}

.main-navigation .navigation-submenu a {
    padding: var(--dropdown-link-padding-y) var(--dropdown-link-padding-x);
    color: var(--dropdown-text);
    background: transparent;
    font-family: var(--header-font-family);
    font-size: var(--dropdown-font-size);
    font-weight: var(--dropdown-font-weight);
    line-height: 1.3;
    white-space: nowrap;
}

.main-navigation .navigation-submenu .expand-subpages {
    margin-right: 12px;
}

.main-navigation .navigation-submenu .expand-subpages::after {
    border-color: var(--dropdown-text);
    transform: rotate(-45deg);
}

.main-navigation .navigation-submenu li.active > span > a,
.main-navigation .navigation-submenu a:hover,
.main-navigation .navigation-submenu a:focus {
    color: var(--dropdown-hover-text);
    background: var(--dropdown-hover-background);
}

/* ==========================
   Header Actions and Burger
========================== */

.header-actions {
    justify-self: end;
}

.button-light {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: var(--contact-min-width);
    min-height: var(--contact-min-height);
    padding: 0 var(--contact-padding-x);
    color: var(--contact-text);
    background: var(--contact-background);
    font-family: var(--header-font-family);
    font-size: var(--contact-font-size);
    font-weight: var(--contact-font-weight);
    line-height: 1;
    text-decoration: none;
    transition: color 0.2s ease, background-color 0.2s ease;
}

.button-light:hover,
.button-light:focus {
    color: var(--contact-hover-text);
    background: var(--contact-hover-background);
}

.header-menu-toggle {
    display: none;
    position: relative;
    width: 48px;
    height: 48px;
    padding: 0;
    border: 2px solid var(--nav-text);
    background: transparent;
    color: var(--nav-text);
    cursor: pointer;
}

.header-menu-toggle__icon,
.header-menu-toggle__icon::before,
.header-menu-toggle__icon::after {
    position: absolute;
    left: 50%;
    width: 22px;
    height: 2px;
    background: currentColor;
    transform: translateX(-50%);
    transition: transform 0.2s ease, top 0.2s ease, opacity 0.2s ease;
}

.header-menu-toggle__icon {
    top: 21px;
}

.header-menu-toggle__icon::before,
.header-menu-toggle__icon::after {
    content: "";
    left: 11px;
}

.header-menu-toggle__icon::before {
    top: -7px;
}

.header-menu-toggle__icon::after {
    top: 7px;
}

.site-header.is-menu-open .header-menu-toggle__icon {
    background: transparent;
}

.site-header.is-menu-open .header-menu-toggle__icon::before {
    top: 0;
    transform: translateX(-50%) rotate(45deg);
}

.site-header.is-menu-open .header-menu-toggle__icon::after {
    top: 0;
    transform: translateX(-50%) rotate(-45deg);
}

/* ==========================
   Responsive Layout
========================== */

@media (max-width: 1100px) {
    .site-header {
        grid-template-columns: 220px 1fr auto;
        gap: 24px;
        padding-right: 30px;
        padding-left: 30px;
    }

    .main-navigation > ul {
        gap: 25px;
    }

    .main-navigation a {
        font-size: var(--tablet-nav-font-size);
    }
}

@media (max-width: 800px) {
    .site-header {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        gap: 12px;
        min-height: auto;
        padding: 20px;
    }

    .header-logo {
        order: 1;
    }

    .header-logo img {
        max-width: 170px;
        max-height: 70px;
    }

    .header-actions {
        order: 2;
        margin-left: auto;
    }

    .header-menu-toggle {
        order: 3;
    }

    .site-header.navigation-enhanced .header-menu-toggle {
        display: block;
    }

    .main-navigation {
        order: 4;
        width: 100%;
    }

    .site-header.navigation-enhanced .main-navigation {
        display: none;
    }

    .site-header.navigation-enhanced.is-menu-open .main-navigation {
        display: block;
    }

    .main-navigation > ul {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
        width: 100%;
        padding-top: 8px;
    }

    .main-navigation li,
    .main-navigation .navigation-submenu li {
        display: flex;
        flex-wrap: wrap;
        justify-content: space-between;
        width: 100%;
        min-width: 0;
        border-top: 1px solid var(--mobile-divider);
    }

    .main-navigation li > span {
        flex: 1 1 auto;
    }

    .main-navigation a,
    .main-navigation .navigation-submenu a {
        padding: 15px 0;
        color: var(--nav-text);
        background: transparent;
        font-size: var(--mobile-nav-font-size);
        white-space: normal;
    }

    .main-navigation .navigation-level-2 a {
        padding-left: 20px;
    }

    .main-navigation .navigation-level-3 a {
        padding-left: 40px;
    }

    .main-navigation .navigation-submenu {
        position: static;
        display: none;
        width: 100%;
        min-width: 0;
        opacity: 1;
        visibility: visible;
        transform: none;
        background: transparent;
        box-shadow: none;
        transition: none;
    }

    .site-header:not(.navigation-enhanced) .main-navigation .has-child:hover > .navigation-submenu,
    .site-header:not(.navigation-enhanced) .main-navigation .has-child:focus-within > .navigation-submenu,
    .site-header.navigation-enhanced .main-navigation .has-child.is-submenu-open > .navigation-submenu {
        display: block;
    }

    .main-navigation .navigation-submenu .expand-subpages {
        margin-right: 0;
    }

    .main-navigation .navigation-submenu .expand-subpages::after {
        border-color: var(--nav-arrow);
        transform: rotate(45deg);
    }

    .main-navigation .navigation-submenu .is-submenu-open > .expand-subpages::after {
        transform: translateY(4px) rotate(225deg);
    }

    .button-light {
        min-width: auto;
        min-height: 48px;
        padding: 0 14px;
        font-size: var(--mobile-contact-font-size);
    }
}

@media (max-width: 430px) {
    .site-header {
        padding: 15px;
    }

    .header-logo img {
        max-width: 130px;
        max-height: 58px;
    }

    .button-light {
        min-height: 44px;
        padding: 0 10px;
        font-size: 16px;
    }

    .header-menu-toggle {
        width: 44px;
        height: 44px;
    }

    .header-menu-toggle__icon {
        top: 19px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .main-navigation .navigation-submenu,
    .main-navigation a,
    .main-navigation .expand-subpages::after,
    .header-menu-toggle__icon,
    .header-menu-toggle__icon::before,
    .header-menu-toggle__icon::after {
        transition: none;
    }
}