/* ==========================================================================
   Header Styles
   ========================================================================== */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background-color: var(--color-white);
    box-shadow: var(--shadow-sm);
    transition: box-shadow var(--transition-normal);
}

.site-header.scrolled {
    box-shadow: var(--shadow-md);
}

.site-header__inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: var(--header-height);
    gap: var(--spacing-6);
}

/* Logo */
.site-header__logo {
    flex-shrink: 0;
}

.site-header__logo a {
    display: block;
}

.site-header__logo img {
    height: 70px;
    width: auto;
}

.site-logo-text {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--color-primary);
}

/* Navigation */
.site-header__nav {
    flex-grow: 1;
    display: flex;
    justify-content: center;
}

.primary-menu {
    display: flex;
    align-items: center;
    gap: var(--spacing-1);
    list-style: none;
    margin: 0;
    padding: 0;
}

.primary-menu > li {
    position: relative;
}

.primary-menu > li > a {
    display: block;
    padding: var(--spacing-2) var(--spacing-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-700);
    text-decoration: none;
    border-radius: var(--border-radius-md);
    transition: color var(--transition-fast), background-color var(--transition-fast);
}

.primary-menu > li > a:hover,
.primary-menu > li.current-menu-item > a,
.primary-menu > li.current-menu-parent > a {
    color: var(--color-primary);
    background-color: rgba(45, 91, 169, 0.05);
}

/* Dropdown Menus */
.primary-menu .sub-menu {
    position: absolute;
    top: 100%;
    left: 0;
    min-width: 200px;
    background-color: var(--color-white);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-lg);
    list-style: none;
    margin: 0;
    padding: var(--spacing-2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(10px);
    transition: all var(--transition-fast);
}

.primary-menu > li:hover > .sub-menu,
.primary-menu > li:focus-within > .sub-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.primary-menu .sub-menu li a {
    display: block;
    padding: var(--spacing-2) var(--spacing-3);
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    border-radius: var(--border-radius-sm);
    transition: background-color var(--transition-fast);
}

.primary-menu .sub-menu li a:hover {
    background-color: var(--color-gray-50);
    color: var(--color-primary);
}

/* Menu item with children indicator */
.primary-menu > li.menu-item-has-children > a::after {
    content: '';
    display: inline-block;
    width: 0;
    height: 0;
    margin-left: 6px;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid currentColor;
    vertical-align: middle;
}

/* Header CTA */
.site-header__cta {
    flex-shrink: 0;
}

/* Mobile Menu Toggle */
.site-header__toggle {
    display: none;
    padding: var(--spacing-2);
    background: none;
    border: none;
    cursor: pointer;
}

.hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    width: 24px;
}

.hamburger__line {
    height: 2px;
    background-color: var(--color-gray-800);
    border-radius: 2px;
    transition: all var(--transition-fast);
}

.site-header__toggle[aria-expanded="true"] .hamburger__line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.site-header__toggle[aria-expanded="true"] .hamburger__line:nth-child(2) {
    opacity: 0;
}

.site-header__toggle[aria-expanded="true"] .hamburger__line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile Styles */
@media (max-width: 900px) {
    .site-header__toggle {
        display: block;
    }

    .site-header__nav {
        position: fixed;
        top: var(--header-height);
        left: 0;
        right: 0;
        bottom: 0;
        background-color: var(--color-white);
        padding: var(--spacing-6);
        opacity: 0;
        visibility: hidden;
        transform: translateX(100%);
        transition: all var(--transition-normal);
        overflow-y: auto;
    }

    .site-header__nav.is-open {
        opacity: 1;
        visibility: visible;
        transform: translateX(0);
    }

    .primary-menu {
        flex-direction: column;
        align-items: stretch;
        gap: 0;
    }

    .primary-menu > li > a {
        padding: var(--spacing-4);
        font-size: var(--font-size-lg);
        border-bottom: 1px solid var(--color-gray-100);
    }

    .primary-menu .sub-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        padding-left: var(--spacing-6);
        display: none;
    }

    .primary-menu > li.menu-item-has-children.is-open > .sub-menu {
        display: block;
    }

    .site-header__cta {
        display: none;
    }

    /* Mobile CTA at bottom of menu */
    .site-header__nav.is-open::after {
        content: '';
        display: block;
        margin-top: var(--spacing-6);
    }
}

/* Add padding to body for fixed header */
body {
    padding-top: var(--header-height);
}

/* Accessibility: Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}