/* ============================================================
   HEADER & NAVIGATION
   ============================================================ */

.site-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: var(--z-fixed);
    /* Transparent on hero pages, becomes solid on scroll */
    background-color: transparent;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    box-shadow: none;
    transition:
        background-color 350ms ease,
        backdrop-filter  350ms ease,
        box-shadow       350ms ease,
        height           250ms ease;
    height: var(--header-height);
    display: flex;
    align-items: center;
}

/* Scrolled state — solid white */
.site-header.scrolled {
    background-color: rgba(255,255,255,0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: var(--shadow-md);
    height: var(--header-height-scroll);
}

/* Non-hero pages always get the solid header immediately */
body:not(.home) .site-header {
    background-color: rgba(255,255,255,0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    box-shadow: 0 1px 0 rgba(0,0,0,0.08);
}

/* Logo text colour: white on transparent header, green on solid */
.site-header:not(.scrolled) .site-logo__name,
.site-header:not(.scrolled) .site-logo__tagline {
    color: rgba(255,255,255,0.95);
}

/* Nav links: white on transparent header */
.site-header:not(.scrolled) .primary-nav__menu > li > a {
    color: rgba(255,255,255,0.9);
}

.site-header:not(.scrolled) .primary-nav__menu > li > a:hover,
.site-header:not(.scrolled) .primary-nav__menu > li.current-menu-item > a {
    color: var(--color-accent);
    background-color: rgba(255,255,255,0.1);
}

/* Search icon: white on transparent */
.site-header:not(.scrolled) .header-search-toggle {
    color: rgba(255,255,255,0.9);
}

.site-header:not(.scrolled) .header-search-toggle:hover {
    background-color: rgba(255,255,255,0.1);
    color: var(--color-accent);
}

/* Hamburger lines: white on transparent */
.site-header:not(.scrolled) .mobile-menu-toggle span {
    background-color: rgba(255,255,255,0.9);
}

/* Non-home pages always use dark text */
body:not(.home) .site-header .site-logo__name {
    color: var(--color-primary);
}
body:not(.home) .site-header .site-logo__tagline {
    color: var(--color-text-muted);
}
body:not(.home) .site-header .primary-nav__menu > li > a {
    color: var(--color-text);
}
body:not(.home) .site-header .header-search-toggle {
    color: var(--color-text);
}
body:not(.home) .site-header .mobile-menu-toggle span {
    background-color: var(--color-text);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-4);
    width: 100%;
}

/* Logo */
.site-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    flex-shrink: 0;
    min-width: 0;
}

.site-logo__img {
    height: 48px;
    width: auto;
    flex-shrink: 0;
    transition: height var(--transition-base);
}

.scrolled .site-logo__img {
    height: 40px;
}

.site-logo__text {
    display: flex;
    flex-direction: column;
    line-height: 1.1;
    min-width: 0;
}

.site-logo__name {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-extrabold);
    color: var(--color-primary);
    letter-spacing: -0.02em;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.site-logo__tagline {
    font-size: var(--font-size-xs);
    color: var(--color-text-muted);
    font-weight: var(--font-weight-normal);
    letter-spacing: 0.02em;
    white-space: nowrap;
}

/* Primary Navigation */
.primary-nav {
    display: flex;
    align-items: center;
    flex: 1;
    justify-content: center;
    padding-inline: var(--space-4);
}
.primary-nav__menu {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    list-style: none;
}

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

.primary-nav__menu > li > a {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    white-space: nowrap;
}

.primary-nav__menu > li > a:hover,
.primary-nav__menu > li.current-menu-item > a,
.primary-nav__menu > li.current-menu-ancestor > a {
    color: var(--color-primary);
    background-color: rgba(0,100,0,0.06);
}

/* Dropdown indicator */
.primary-nav__menu > li.menu-item-has-children > a::after {
    content: 'expand_more';
    font-family: 'Material Symbols Outlined';
    font-size: 1rem;
    font-weight: 400;
    font-style: normal;
    line-height: 1;
    letter-spacing: normal;
    text-transform: none;
    display: inline-block;
    white-space: nowrap;
    word-wrap: normal;
    direction: ltr;
    -webkit-font-feature-settings: 'liga';
    font-feature-settings: 'liga';
    -webkit-font-smoothing: antialiased;
    transition: transform var(--transition-fast);
}

.primary-nav__menu > li.menu-item-has-children:hover > a::after {
    transform: rotate(180deg);
}

/* Dropdown menu */
.primary-nav__menu .sub-menu {
    position: absolute;
    top: calc(100% + var(--space-2));
    left: 0;
    min-width: 220px;
    background: var(--color-bg);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    border: 1px solid var(--color-border);
    padding: var(--space-2);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: all var(--transition-base);
    z-index: var(--z-dropdown);
    list-style: none;
}

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

.primary-nav__menu .sub-menu a {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-sm);
    color: var(--color-text);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.primary-nav__menu .sub-menu a:hover {
    background-color: rgba(0,100,0,0.06);
    color: var(--color-primary);
}

/* Header actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex-shrink: 0;
}

/* Search toggle */
.header-search-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    color: var(--color-text);
    transition: all var(--transition-fast);
    background: none;
    border: none;
    cursor: pointer;
}

.header-search-toggle:hover {
    background-color: rgba(0,100,0,0.06);
    color: var(--color-primary);
}

/* Search overlay */
.search-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0,0,0,0.7);
    z-index: var(--z-modal);
    display: flex;
    align-items: flex-start;
    justify-content: center;
    padding-top: 15vh;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
}

.search-overlay.active {
    opacity: 1;
    visibility: visible;
}

.search-overlay__inner {
    width: 100%;
    max-width: 600px;
    padding: var(--space-4);
}

.search-overlay__form {
    display: flex;
    align-items: center;
    background: var(--color-bg);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
}

.search-overlay__input {
    flex: 1;
    padding: var(--space-4) var(--space-6);
    font-size: var(--font-size-lg);
    border: none;
    outline: none;
    background: transparent;
    color: var(--color-text);
}

.search-overlay__submit {
    padding: var(--space-4) var(--space-5);
    background: var(--color-primary);
    color: var(--color-secondary);
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    transition: background var(--transition-fast);
}

.search-overlay__submit:hover {
    background: var(--color-primary-dark);
}

.search-overlay__close {
    position: absolute;
    top: var(--space-6);
    right: var(--space-6);
    color: var(--color-secondary);
    background: none;
    border: none;
    cursor: pointer;
    font-size: 2rem;
    display: flex;
    align-items: center;
}

/* Mobile menu toggle */
.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: none;
    border: none;
    cursor: pointer;
    gap: 5px;
    transition: background var(--transition-fast);
}

.mobile-menu-toggle:hover {
    background-color: rgba(0,100,0,0.06);
}

.mobile-menu-toggle span {
    display: block;
    width: 22px;
    height: 2px;
    background-color: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.mobile-menu-toggle.active span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}
.mobile-menu-toggle.active span:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}
.mobile-menu-toggle.active span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* Mobile nav drawer */
.mobile-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg);
    z-index: calc(var(--z-fixed) - 1);
    overflow-y: auto;
    transform: translateX(-100%);
    transition: transform var(--transition-base);
    padding: var(--space-6);
}

.mobile-nav.active {
    transform: translateX(0);
}

.mobile-nav__menu {
    list-style: none;
}

.mobile-nav__menu li a {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-4) 0;
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text);
    border-bottom: 1px solid var(--color-border);
    transition: color var(--transition-fast);
}

.mobile-nav__menu li a:hover {
    color: var(--color-primary);
}

.mobile-nav__menu .sub-menu {
    list-style: none;
    padding-left: var(--space-4);
    display: none;
}

.mobile-nav__menu .sub-menu.open {
    display: block;
}

.mobile-nav__menu .sub-menu a {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-normal);
    padding: var(--space-3) 0;
    border-bottom: 1px solid var(--color-border);
}

.mobile-nav__cta {
    margin-top: var(--space-6);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

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

/* Inner pages: the page-banner has its own generous top padding,
   so we remove the body offset to avoid a double gap */
body:not(.home) {
    padding-top: 0;
}