/* =============================================================
   HEADER — site-header.css
   Sticky header with transparent-to-white scroll transition.
   ============================================================= */

/* ---- Base structure ---- */
.site-header {
    position: fixed;
    inset-block-start: 0;
    inset-inline: 0;
    z-index: var(--z-header);
    transition: background var(--transition-base), box-shadow var(--transition-base);
}

/* Default: transparent background (for hero pages) */
.site-header {
    background: transparent;
}

/* Scrolled state — added via JS */
.site-header.is-scrolled {
    background: var(--color-white);
    box-shadow: var(--shadow-sm);
}

.header__inner {
    display: flex;
    align-items: center;
    gap: var(--space-8);
    height: 72px;
}

/* ---- Logo ---- */
.header__logo,
.site-logo {
    display: flex;
    align-items: center;
    flex-shrink: 0;
    text-decoration: none;
}

.site-logo__img {
    height: 44px;
    width: auto;
    max-width: 220px;
    object-fit: contain;
    display: block;
}

/* Light logo on top of page, dark logo after scrolling */
.site-logo__img--dark {
    display: none;
}

.site-header.is-scrolled .site-logo__img--light {
    display: none;
}

.site-header.is-scrolled .site-logo__img--dark {
    display: block;
}

.site-logo__text {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    transition: color var(--transition-base);
}

.site-header.is-scrolled .site-logo__text {
    color: var(--color-primary);
}

/* ---- Primary navigation ---- */
.header__nav {
    flex: 1;
    display: flex;
    justify-content: flex-end;
}

.nav__list {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    list-style: none;
}

.nav__list li {
    position: relative;
}

.nav__list a {
    display: block;
    padding: var(--space-2) var(--space-4);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-white);
    text-decoration: none;
    white-space: nowrap;
    transition: color var(--transition-fast);
    border-radius: var(--radius-sm);
}

.site-header.is-scrolled .nav__list a {
    color: var(--color-gray-800);
}

/* .nav__list a:hover,
.nav__list .current-menu-item > a,
.nav__list .current-page-ancestor > a {
    color: var(--color-accent-green) !important;
} */

/* Active indicator line */
.nav__list .current-menu-item>a::after {
    content: '';
    display: block;
    height: 2px;
    background: #fff;
    margin-top: 2px;
    border-radius: var(--radius-full);
}

.site-header.is-scrolled .nav__list a::after {
    background: #000;
}

/* ---- Right actions ---- */
.header__actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
    flex-shrink: 0;
}

/* ---- Language Switcher ---- */
.lang-switcher {
    position: relative;
}

.lang-switcher__toggle {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-semibold);
    letter-spacing: 0.05em;
    color: var(--color-white);
    background: rgba(255, 255, 255, .15);
    border: 1px solid rgba(255, 255, 255, .3);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.site-header.is-scrolled .lang-switcher__toggle {
    color: var(--color-gray-800);
    background: var(--color-gray-100);
    border-color: var(--color-gray-300);
}

.lang-switcher__toggle:hover {
    background: rgba(255, 255, 255, .25);
}

.site-header.is-scrolled .lang-switcher__toggle:hover {
    background: var(--color-gray-200);
}

.lang-switcher__arrow {
    transition: transform var(--transition-fast);
}

.lang-switcher.is-open .lang-switcher__arrow {
    transform: rotate(180deg);
}

.lang-switcher__dropdown {
    display: none;
    position: absolute;
    inset-block-start: calc(100% + var(--space-2));
    inset-inline-end: 0;
    min-width: 120px;
    background: var(--color-white);
    border: 1px solid var(--color-gray-200);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    overflow: hidden;
    list-style: none;
    z-index: var(--z-dropdown);
}

.lang-switcher.is-open .lang-switcher__dropdown {
    display: block;
}

.lang-switcher__dropdown li a {
    display: block;
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-sm);
    color: var(--color-gray-800);
    transition: background var(--transition-fast);
}

.lang-switcher__dropdown li a:hover,
.lang-switcher__dropdown li.current-lang a {
    background: var(--color-gray-100);
    color: var(--color-primary);
}

/* ---- Hamburger button ---- */
.hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    width: 36px;
    height: 36px;
    padding: var(--space-2);
    cursor: pointer;
    background: none;
    border: none;
}

.hamburger__line {
    display: block;
    width: 100%;
    height: 2px;
    background: var(--color-white);
    border-radius: var(--radius-full);
    transform-origin: center;
    transition: all var(--transition-base);
}

.site-header.is-scrolled .hamburger__line {
    background: var(--color-gray-800);
}

/* Hamburger → X animation */
.hamburger.is-active .hamburger__line:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.hamburger.is-active .hamburger__line:nth-child(2) {
    opacity: 0;
    transform: scaleX(0);
}

.hamburger.is-active .hamburger__line:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}

/* ---- Mobile Menu ---- */
.mobile-menu {
    display: none;
    position: fixed;
    inset: 72px 0 0;
    background: var(--color-white);
    z-index: calc(var(--z-header) - 1);
    overflow-y: auto;
    transform: translateX(100%);
    transition: transform var(--transition-base);
}

.mobile-menu.is-open {
    transform: translateX(0);
}

.mobile-menu__inner {
    padding: var(--space-6) var(--container-padding);
}

.mobile-nav__list {
    list-style: none;
    border-top: 1px solid var(--color-gray-200);
}

.mobile-nav__list li {
    border-bottom: 1px solid var(--color-gray-200);
}

.mobile-nav__list a {
    display: block;
    padding: var(--space-4) 0;
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-medium);
    color: var(--color-gray-800);
    transition: color var(--transition-fast);
}

.mobile-nav__list a:hover,
.mobile-nav__list .current-menu-item a {
    color: var(--color-primary);
}

.mobile-lang {
    margin-top: var(--space-6);
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-gray-200);
}

.mobile-lang ul {
    display: flex;
    gap: var(--space-4);
    list-style: none;
}

.mobile-lang ul a {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-gray-600);
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.mobile-lang ul .current-lang a,
.mobile-lang ul a:hover {
    background: var(--color-primary);
    color: var(--color-white);
    border-color: var(--color-primary);
}

.site-logo__text-wrap {
    display: flex;
    flex-direction: column;
    gap: 2px;
}

.site-logo__name {
    font-size: var(--font-size-md);
    font-weight: var(--font-weight-bold);
    color: var(--color-white);
    line-height: 1.2;
    transition: color var(--transition-base);
}

.site-logo__tagline {
    font-size: 0.6rem;
    font-weight: var(--font-weight-normal);
    color: rgba(255, 255, 255, 0.75);
    letter-spacing: 0.08em;
    line-height: 1;
    transition: color var(--transition-base);
}

.site-header.is-scrolled .site-logo__name {
    color: var(--color-primary);
}

.site-header.is-scrolled .site-logo__tagline {
    color: var(--color-gray-500);
}

/* ---- Responsive ---- */
@media (max-width: 900px) {

    .header__inner {
        justify-content: space-between;
    }

    .header__nav {
        display: none;
    }

    .hamburger {
        display: flex;
    }

    .mobile-menu {
        display: block;
    }
}

@media (max-width: 480px) {
    .header__inner {
        height: 60px;
    }

    .mobile-menu {
        inset-block-start: 60px;
    }
}