/**
 * CADMasters — Premium Engineering Corporate Navigation
 * Independent global header system. Do not merge with hero/page-builder styles.
 */

:root {
    --nav-utility-height: 36px;
    --nav-main-height: 90px;
    --nav-main-height-scrolled: 72px;
    --nav-brand-blue: #005A9C;
    --nav-text-dark: #1b1f23;
    --nav-text-muted: #64748b;
    --nav-glass-bg: rgba(255, 255, 255, 0.08);
    --nav-glass-border: rgba(255, 255, 255, 0.15);
    --site-header-height: calc(var(--nav-utility-height) + var(--nav-main-height));
}

body.header-scrolled {
    --nav-main-height: var(--nav-main-height-scrolled);
    --site-header-height: calc(var(--nav-utility-height) + var(--nav-main-height-scrolled));
}

/* ── Header shell ───────────────────────────────────────────────────── */

.site-header.site-header--premium {
    position: sticky;
    top: 0;
    z-index: 1000;
    width: 100%;
    transition:
        box-shadow 0.35s var(--frontend-v2-ease, ease),
        background-color 0.35s ease,
        border-color 0.35s ease,
        backdrop-filter 0.35s ease;
}

/* Hero contrast integration — body classes set by HeroContrastService */
body.hero-dark:not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .main-navigation .nav-link,
body.hero-dark:not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .main-navigation__portal-link {
    color: #ffffff;
}

body.hero-light:not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .main-navigation .nav-link,
body.hero-light:not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .main-navigation__portal-link,
body:not(.hero-dark):not(.hero-light):not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .main-navigation .nav-link,
body:not(.hero-dark):not(.hero-light):not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .main-navigation__portal-link {
    color: var(--nav-text-dark);
}

body.hero-dark:not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .logo-light {
    display: block !important;
}

body.hero-dark:not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .logo-dark {
    display: none !important;
}

body.hero-light:not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .logo-light,
body:not(.hero-dark):not(.hero-light):not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .logo-light {
    display: none !important;
}

body.hero-light:not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .logo-dark,
body:not(.hero-dark):not(.hero-light):not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .logo-dark {
    display: block !important;
}

body.hero-dark:not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .main-navigation__toggle {
    color: #ffffff;
}

body.hero-light:not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .main-navigation__toggle,
body:not(.hero-dark):not(.hero-light):not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .main-navigation__toggle {
    color: var(--nav-text-dark);
}

body.hero-dark:not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .top-utility-bar {
    color: rgba(255, 255, 255, 0.88);
}

body.hero-light:not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .top-utility-bar,
body:not(.hero-dark):not(.hero-light):not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .top-utility-bar {
    color: var(--nav-text-muted);
}

.site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) {
    background: var(--nav-glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--nav-glass-border);
    box-shadow: none;
}

body:not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) {
    background: rgba(255, 255, 255, 0.08);
}

body.header-scrolled .site-header.site-header--premium,
.site-header.site-header--premium.site-header--contrast-dark,
.site-header.site-header--premium.site-header--drawer-open {
    background: #ffffff;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    border-bottom: 1px solid rgba(15, 23, 42, 0.08);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.08);
}

/* ── Utility bar ────────────────────────────────────────────────────── */

.top-utility-bar {
    min-height: var(--nav-utility-height);
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
    font-size: 0.8125rem;
    letter-spacing: 0.02em;
}

.top-utility-bar__inner {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    min-height: var(--nav-utility-height);
}

.top-utility-bar__locations,
.top-utility-bar__contact {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.top-utility-bar__sep {
    opacity: 0.45;
}

.top-utility-bar__link,
.top-utility-bar__text {
    color: inherit;
    text-decoration: none;
}

.top-utility-bar__link:hover,
.top-utility-bar__link:focus-visible {
    text-decoration: underline;
}

.site-header--hero-overlay:not(.site-header--drawer-open) .top-utility-bar {
    border-bottom-color: rgba(255, 255, 255, 0.12);
}

body.header-scrolled .top-utility-bar,
.site-header--contrast-dark .top-utility-bar,
.site-header--drawer-open .top-utility-bar {
    color: var(--nav-text-muted);
    border-bottom-color: rgba(15, 23, 42, 0.08);
    background: #f8fafc;
}

body.header-scrolled .top-utility-bar__link,
.site-header--contrast-dark .top-utility-bar__link {
    color: var(--nav-text-muted);
}

/* ── Main navigation row ────────────────────────────────────────────── */

.main-navigation {
    min-height: var(--nav-main-height);
    transition: min-height 0.35s ease;
}

.main-navigation__inner {
    display: grid;
    grid-template-columns: auto 1fr auto;
    grid-template-areas: "brand panel actions";
    align-items: center;
    gap: 1.5rem;
    min-height: var(--nav-main-height);
    transition: min-height 0.35s ease;
}

.main-navigation__brand {
    grid-area: brand;
    display: inline-flex;
    align-items: center;
    text-decoration: none;
    flex-shrink: 0;
}

.main-navigation__wordmark {
    font-weight: 700;
    font-size: 1.125rem;
    color: var(--nav-text-dark);
}

.main-navigation__wordmark span {
    color: var(--nav-brand-blue);
}

.logo-dark,
.logo-light {
    display: block;
    height: 45px;
    width: auto;
    max-width: 180px;
    object-fit: contain;
}

.logo-light {
    display: none;
}

body.header-scrolled .logo-light,
.site-header--contrast-dark .logo-light,
.site-header--drawer-open .logo-light {
    display: none !important;
}

body.header-scrolled .logo-dark,
.site-header--contrast-dark .logo-dark,
.site-header--drawer-open .logo-dark {
    display: block !important;
}

.site-header--hero-overlay:not(.site-header--drawer-open) .main-navigation__wordmark {
    color: #fff;
}

body.hero-light:not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .main-navigation__wordmark,
body:not(.hero-dark):not(.hero-light):not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .main-navigation__wordmark {
    color: var(--nav-text-dark);
}

body.header-scrolled .main-navigation__wordmark,
.site-header--contrast-dark .main-navigation__wordmark {
    color: var(--nav-text-dark);
}

/* ── Desktop menu ───────────────────────────────────────────────────── */

.main-navigation__panel {
    grid-area: panel;
    display: flex;
    align-items: center;
    justify-content: center;
}

.main-navigation__menu {
    display: flex;
    align-items: center;
    gap: 0;
    list-style: none;
    margin: 0;
    padding: 0;
}

.main-navigation__menu > .nav-item {
    margin-left: 32px;
}

.main-navigation__menu > .nav-item:first-child {
    margin-left: 0;
}

.main-navigation .nav-link {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
    padding: 0.25rem 0;
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.2px;
    color: var(--nav-text-dark);
    text-decoration: none;
    white-space: nowrap;
    background: none;
    border: 0;
    transition: color 0.3s ease;
}

body.header-scrolled .main-navigation .nav-link,
.site-header--contrast-dark .main-navigation .nav-link,
.site-header--drawer-open .main-navigation .nav-link {
    color: var(--nav-text-dark);
}

.main-navigation .nav-link:hover,
.main-navigation .nav-link:focus-visible {
    color: var(--nav-brand-blue);
}

body.hero-dark:not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .main-navigation .nav-link:hover,
body.hero-dark:not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .main-navigation .nav-link:focus-visible {
    color: rgba(255, 255, 255, 0.85);
}

.main-navigation .nav-link::after {
    content: "";
    position: absolute;
    bottom: -8px;
    left: 0;
    height: 2px;
    width: 0;
    background: var(--nav-brand-blue);
    transition: width 0.3s ease;
}

.main-navigation .nav-link.active {
    color: var(--nav-brand-blue);
}

body.hero-dark:not(.header-scrolled) .site-header.site-header--premium.site-header--hero-overlay:not(.site-header--drawer-open) .main-navigation .nav-link.active {
    color: #ffffff;
}

.main-navigation .nav-link.active::after,
.main-navigation .nav-link:hover::after {
    width: 100%;
}

.main-navigation__actions {
    grid-area: actions;
    display: flex;
    align-items: center;
    gap: 1rem;
}

.main-navigation__portal-link {
    font-size: 15px;
    font-weight: 500;
    letter-spacing: 0.2px;
    color: var(--nav-text-dark);
    text-decoration: none;
    white-space: nowrap;
}

body.header-scrolled .main-navigation__portal-link,
.site-header--contrast-dark .main-navigation__portal-link {
    color: var(--nav-text-dark);
}

.main-navigation__cta {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-height: 44px;
    padding: 14px 28px;
    border-radius: 6px;
    background: var(--nav-brand-blue);
    color: #fff !important;
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.02em;
    text-decoration: none;
    white-space: nowrap;
    box-shadow: 0 4px 14px rgba(0, 90, 156, 0.24);
    transition: transform 0.25s ease, box-shadow 0.25s ease, background-color 0.25s ease;
}

.main-navigation__cta:hover,
.main-navigation__cta:focus-visible {
    transform: translateY(-2px);
    box-shadow: 0 8px 22px rgba(0, 90, 156, 0.32);
    color: #fff !important;
}

/* ── Dropdown / mega menu ───────────────────────────────────────────── */

.main-navigation .dropdown-menu {
    border: 1px solid rgba(15, 23, 42, 0.08);
    border-radius: 8px;
    box-shadow: 0 16px 40px rgba(15, 23, 42, 0.12);
    padding: 0.5rem;
    margin-top: 0.75rem;
}

.main-navigation .dropdown-item {
    border-radius: 6px;
    font-size: 0.9375rem;
    font-weight: 500;
    padding: 0.5rem 0.75rem;
}

.main-navigation .dropdown-item:hover,
.main-navigation .dropdown-item:focus,
.main-navigation .dropdown-item.active {
    background: rgba(0, 90, 156, 0.08);
    color: var(--nav-brand-blue);
}

.main-navigation .mega-menu {
    min-width: min(920px, 92vw);
    padding: 1.25rem 1.5rem;
    border-radius: 0.875rem;
    border: 1px solid rgba(15, 23, 42, 0.08);
    background: #fff;
    box-shadow: 0 24px 60px rgba(15, 23, 42, 0.14);
}

.main-navigation .mega-menu__title {
    color: inherit;
    text-decoration: none;
}

.main-navigation .mega-menu__title:hover {
    color: var(--nav-brand-blue);
}

/* ── Mobile toggle ──────────────────────────────────────────────────── */

.main-navigation__toggle {
    grid-area: actions;
    justify-self: end;
    display: none;
    width: 44px;
    height: 44px;
    border: 0;
    background: transparent;
    padding: 0;
    cursor: pointer;
}

.main-navigation__toggle-icon,
.main-navigation__toggle-icon::before,
.main-navigation__toggle-icon::after {
    display: block;
    width: 22px;
    height: 2px;
    background: currentColor;
    border-radius: 1px;
    transition: transform 0.25s ease, opacity 0.25s ease;
}

.main-navigation__toggle-icon {
    position: relative;
    color: var(--nav-text-dark);
}

.main-navigation__toggle-icon::before,
.main-navigation__toggle-icon::after {
    content: "";
    position: absolute;
    left: 0;
}

.main-navigation__toggle-icon::before {
    top: -7px;
}

.main-navigation__toggle-icon::after {
    top: 7px;
}

.site-header--hero-overlay:not(.site-header--drawer-open) .main-navigation__toggle {
    color: #fff;
}

body.header-scrolled .main-navigation__toggle,
.site-header--contrast-dark .main-navigation__toggle {
    color: var(--nav-text-dark);
}

.main-navigation__toggle[aria-expanded="true"] .main-navigation__toggle-icon {
    background: transparent;
}

.main-navigation__toggle[aria-expanded="true"] .main-navigation__toggle-icon::before {
    top: 0;
    transform: rotate(45deg);
}

.main-navigation__toggle[aria-expanded="true"] .main-navigation__toggle-icon::after {
    top: 0;
    transform: rotate(-45deg);
}

.main-navigation__backdrop {
    position: fixed;
    inset: var(--site-header-height) 0 0 0;
    background: rgba(15, 23, 42, 0.45);
    z-index: 1029;
}

.main-navigation__backdrop[hidden] {
    display: none !important;
}

/* ── Mobile drawer ──────────────────────────────────────────────────── */

@media (max-width: 991.98px) {
    .main-navigation__inner {
        grid-template-columns: 1fr auto;
        grid-template-areas:
            "brand toggle"
            "panel panel";
    }

    .main-navigation__toggle {
        display: inline-flex;
        align-items: center;
        justify-content: center;
    }

    .main-navigation__actions {
        display: none !important;
    }

    .main-navigation__panel {
        position: fixed;
        top: var(--site-header-height);
        right: 0;
        bottom: 0;
        width: min(360px, 100vw);
        max-height: calc(100vh - var(--site-header-height));
        overflow-y: auto;
        background: #fff;
        box-shadow: -8px 0 32px rgba(15, 23, 42, 0.12);
        padding: 1.25rem 1.5rem 2rem;
        transform: translateX(100%);
        transition: transform 0.3s ease;
        z-index: 1031;
        flex-direction: column;
        align-items: stretch;
        justify-content: flex-start;
        visibility: hidden;
    }

    .site-header--drawer-open .main-navigation__panel {
        transform: translateX(0);
        visibility: visible;
    }

    .main-navigation__menu {
        flex-direction: column;
        align-items: stretch;
        width: 100%;
    }

    .main-navigation__menu > .nav-item {
        margin-left: 0;
        border-bottom: 1px solid rgba(15, 23, 42, 0.08);
    }

    .main-navigation .nav-link {
        display: flex;
        width: 100%;
        padding: 0.95rem 0;
        color: var(--nav-text-dark) !important;
    }

    .main-navigation .nav-link::after {
        display: none;
    }

    .main-navigation .nav-link--parent {
        justify-content: space-between;
    }

    .main-navigation__mobile-actions {
        display: flex;
        flex-direction: column;
        gap: 0.75rem;
        margin-top: 1.5rem;
        padding-top: 1.5rem;
        border-top: 1px solid rgba(15, 23, 42, 0.08);
    }

    .main-navigation__mobile-actions .main-navigation__cta {
        width: 100%;
        text-align: center;
    }
}

@media (min-width: 992px) {
    .main-navigation__panel {
        display: flex !important;
        position: static;
        transform: none;
        visibility: visible;
        background: transparent;
        box-shadow: none;
        padding: 0;
        overflow: visible;
        max-height: none;
        width: auto;
    }

    .main-navigation__mobile-actions {
        display: none !important;
    }
}

/* ── Hero overlap offset (layout only) ──────────────────────────────── */

.cm-main > .hero-section:first-child,
.cm-main > .hero-image-slider:first-child,
.cm-main > .cm-page-section:first-child:has(.hero-image-slider, .cms-hero, .hero-section) {
    margin-top: calc(-1 * var(--site-header-height));
}

@media (min-width: 1440px) {
    .top-utility-bar__inner,
    .main-navigation__inner {
        max-width: min(1360px, calc(100vw - 4rem));
        margin-inline: auto;
        padding-inline: 0;
    }
}

@media (min-width: 1920px) {
    .top-utility-bar__inner,
    .main-navigation__inner {
        max-width: min(1400px, calc(100vw - 5rem));
    }
}

body.cm-nav-open {
    overflow: hidden;
}

.main-navigation .dropdown-menu {
    animation: cmNavDropdownIn 0.25s ease;
}

@keyframes cmNavDropdownIn {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}

.nav-submenu-collapse.collapsing,
.nav-submenu-collapse.show {
    transition: height 0.28s ease;
}

@media (prefers-reduced-motion: reduce) {
    .site-header.site-header--premium,
    .main-navigation,
    .main-navigation__inner,
    .main-navigation__panel,
    .main-navigation__cta,
    .main-navigation .nav-link::after {
        transition: none !important;
    }
}