/**
 * GenPA Header Styles
 * Two-tier header: Light evergreen top bar + Evergreen main navigation
 */

/* ===================================
   Top Bar - Light Evergreen with White Text
   =================================== */
.header-top-bar {
    background-color: #0a5c2e; /* Lighter shade of evergreen */
    color: #fff;
    font-size: 0.8125rem;
    padding: 0.5rem 0;
    letter-spacing: 0.5px;
}

.header-top-bar .container {
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.header-top-bar .top-bar-right {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.header-top-bar .top-bar-link {
    color: #fff;
    text-decoration: none;
    font-weight: 500;
    padding: 0.25rem 0.75rem;
    transition: var(--gsp-transition-fast);
    border-radius: var(--gsp-radius-sm);
}

.header-top-bar .top-bar-link:hover {
    color: #fff;
    background-color: rgba(255, 255, 255, 0.15);
}

.header-top-bar .top-bar-separator {
    color: rgba(255, 255, 255, 0.5);
    margin: 0 0.25rem;
}

/* ===================================
   Main Navigation Bar - Evergreen Background
   =================================== */
.site-header .navbar-main {
    background-color: var(--gsp-evergreen);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
    padding: 0.75rem 0;
}

.site-header .navbar-main .navbar-brand {
    display: flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
}

.site-header .navbar-main .navbar-brand img {
    height: 50px;
    width: auto;
}

.site-header .navbar-main .navbar-brand .site-title {
    font-family: var(--gsp-font-heading);
    font-weight: 700;
    font-size: 1.5rem;
    color: #fff;
    margin: 0;
    line-height: 1.2;
}

/* ===================================
   Navigation Links - White Text
   =================================== */
.site-header .navbar-main .navbar-nav {
    gap: 0.25rem;
}

.site-header .navbar-main .nav-link {
    color: #fff;
    font-weight: 600;
    font-size: 0.9375rem;
    padding: 0.75rem 1rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    position: relative;
    transition: var(--gsp-transition-fast);
}

.site-header .navbar-main .nav-link::after {
    content: '';
    position: absolute;
    bottom: 0.5rem;
    left: 1rem;
    right: 1rem;
    height: 2px;
    background-color: #fff;
    transform: scaleX(0);
    transition: transform var(--gsp-transition-base);
}

.site-header .navbar-main .nav-link:hover,
.site-header .navbar-main .nav-link:focus {
    color: var(--gsp-keystone-gold);
    text-decoration: none;
}

.site-header .navbar-main .nav-link.active::after {
    transform: scaleX(1);
}

.site-header .navbar-main .nav-link.active {
    color: #fff;
}

/* ===================================
   Dropdown Menu Styles
   =================================== */
.site-header .navbar-main .dropdown-menu {
    border: none;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
    border-radius: var(--gsp-radius-md);
    padding: 0.5rem 0;
    margin-top: 0.5rem;
    background-color: #fff;
}

.site-header .navbar-main .dropdown-item {
    color: var(--gsp-evergreen);
    font-weight: 500;
    padding: 0.625rem 1.25rem;
    transition: var(--gsp-transition-fast);
}

.site-header .navbar-main .dropdown-item:hover,
.site-header .navbar-main .dropdown-item:focus {
    background-color: var(--gsp-parchment);
    color: var(--gsp-evergreen);
}

.site-header .navbar-main .dropdown-item.active {
    background-color: var(--gsp-evergreen);
    color: #fff;
}

.site-header .navbar-main .dropdown-item i {
    color: var(--gsp-evergreen);
    width: 1.25rem;
}

.site-header .navbar-main .dropdown-divider {
    border-color: rgba(1, 65, 29, 0.1);
    margin: 0.25rem 0;
}

/* ===================================
   Mobile Toggle Button
   =================================== */
.site-header .navbar-main .navbar-toggler {
    border: 2px solid #fff;
    padding: 0.5rem 0.75rem;
    border-radius: var(--gsp-radius-sm);
}

.site-header .navbar-main .navbar-toggler:focus {
    box-shadow: 0 0 0 0.25rem rgba(255, 255, 255, 0.25);
}

.site-header .navbar-main .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='%23ffffff' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e");
}

/* ===================================
   Mobile Responsive
   =================================== */
@media (max-width: 991.98px) {
    /* Mobile navigation */
    .site-header .navbar-main .navbar-collapse {
        background-color: var(--gsp-evergreen);
        margin-top: 1rem;
        padding: 1rem;
        border-radius: var(--gsp-radius-md);
    }

    .site-header .navbar-main .nav-link {
        padding: 0.875rem 1rem;
        border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    }

    .site-header .navbar-main .nav-link::after {
        display: none;
    }

    .site-header .navbar-main .nav-item:last-child .nav-link {
        border-bottom: none;
    }

    .site-header .navbar-main .dropdown-menu {
        background-color: rgba(255, 255, 255, 0.1);
        margin-top: 0;
        border-radius: var(--gsp-radius-sm);
    }

    .site-header .navbar-main .dropdown-item {
        color: #fff;
    }

    .site-header .navbar-main .dropdown-item:hover,
    .site-header .navbar-main .dropdown-item:focus {
        background-color: rgba(255, 255, 255, 0.1);
        color: #fff;
    }

    /* Stack logo and title on mobile */
    .site-header .navbar-main .navbar-brand {
        flex-direction: row;
        align-items: center;
        gap: 0.75rem;
    }

    .site-header .navbar-main .navbar-brand img {
        height: 40px;
    }

    .site-header .navbar-main .navbar-brand .site-title {
        font-size: 1.125rem;
    }
}

@media (max-width: 575.98px) {
    .header-top-bar {
        font-size: 0.75rem;
    }

    .header-top-bar .top-bar-link {
        padding: 0.25rem 0.5rem;
        font-size: 0.6875rem;
    }
}

/* ===================================
   Skip to Content Link (Accessibility)
   =================================== */
.skip-to-content {
    position: absolute;
    top: -100%;
    left: 0;
    background: var(--gsp-evergreen);
    color: #fff;
    padding: 0.75rem 1.5rem;
    z-index: 9999;
    transition: top 0.3s;
}

.skip-to-content:focus {
    top: 0;
    color: #fff;
}