.header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    height: var(--header-height);
    background: transparent;
    z-index: var(--z-header);
}

.header.header--sticky {
    position: fixed;
    background: rgba(16, 16, 14, 0.85);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    opacity: 1 !important;
    animation: headerSlideIn 0.4s ease-out both !important;
}

@keyframes headerSlideIn {
    from {
        transform: translateY(-100%);
    }
    to {
        transform: translateY(0);
    }
}

/* Mobile sticky header - scale applied via JS */
@media (max-width: 640px) {
    @keyframes headerSlideIn {
        from {
            transform: translateY(-100%) scale(var(--mobile-scale, 1));
        }
        to {
            transform: translateY(0) scale(var(--mobile-scale, 1));
        }
    }
}

.header__container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
    max-width: var(--page-width);
    height: 100%;
    margin: 0 auto;
    padding: 0 var(--spacing-16);
}

.header__logo {
    display: flex;
    align-items: center;
    width: 144px;
    height: 30px;
}

.header__logo-image {
    width: 100%;
    height: auto;
}

.header__nav {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    padding: 0 var(--spacing-4);
    gap: 0;
}

.nav-item {
    position: relative;
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    padding: var(--spacing-14) var(--spacing-4);
    cursor: pointer;
}

.nav-item__label {
    font-family: var(--font-primary);
    font-size: var(--text-base);
    font-weight: var(--font-regular);
    line-height: var(--leading-base);
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

.nav-item:hover .nav-item__label {
    color: var(--color-text-primary);
}

.nav-item__arrow {
    width: 16px;
    height: 16px;
    margin-left: var(--spacing-1);
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16" fill="none"><path d="M4 6L8 10L12 6" stroke="%23777A6C" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/></svg>') center no-repeat;
    transition: transform var(--transition-fast);
}

.nav-item:hover .nav-item__arrow {
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" width="16" height="16" viewBox="0 0 16 16" fill="none"><path d="M4 6L8 10L12 6" stroke="%23FFFFFF" stroke-width="1.5" stroke-linecap="round" stroke-linejoin="round"/></svg>') center no-repeat;
}

.nav-item--dropdown:hover .nav-item__arrow {
    transform: rotate(180deg);
}

.header__actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

/* ==========================================================================
   Hamburger Menu (Desktop: hidden)
   ========================================================================== */

.header__hamburger {
    display: none;
    flex-direction: column;
    justify-content: center;
    align-items: flex-end;
    width: 40px;
    height: 40px;
    padding: 8px;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.hamburger-line {
    display: block;
    height: 2px;
    background: #9B9F8E;
    border-radius: 4px;
    transition: all var(--transition-fast);
}

.hamburger-line:nth-child(1) {
    width: 15.39px;
}

.hamburger-line:nth-child(2) {
    width: 18.66px;
}

.hamburger-line:nth-child(3) {
    width: 12.91px;
}

/* ==========================================================================
   Mobile Header Styles
   Breakpoint: 640px
   ========================================================================== */

@media (max-width: 640px) {
    .header {
        width: 375px;
        transform-origin: top left;
    }


    .header.header--sticky {
        height: 65px;
        padding-top: 5px;
        background: rgba(16, 16, 14, 0.85);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
    }

    .header__container {
        padding: 0 16px;
        justify-content: flex-start;
    }

    /* Hide desktop navigation */
    .header__nav {
        display: none;
    }

    /* Push actions and hamburger to the right */
    .header__actions {
        margin-left: auto;
        margin-right: 8px;
    }

    /* Show hamburger menu */
    .header__hamburger {
        display: flex;
        position: relative;
        z-index: 1003;
    }

    /* Hamburger to X animation */
    .header__hamburger.is-open .hamburger-line:nth-child(1) {
        width: 18px;
        transform: rotate(45deg) translate(5px, 5px);
    }

    .header__hamburger.is-open .hamburger-line:nth-child(2) {
        opacity: 0;
        width: 0;
    }

    .header__hamburger.is-open .hamburger-line:nth-child(3) {
        width: 18px;
        transform: rotate(-45deg) translate(5px, -5px);
    }

    /* Mobile button size */
    .btn--header {
        width: 120px;
        height: 36px;
        font-size: 16px;
        line-height: 20px;
    }

    .header__actions .lang-selector {
        display: none;
    }
}

/* ============ Language Selector (Desktop) ============ */

.lang-selector {
    position: relative;
}

.lang-selector__current {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    font-family: var(--font-primary);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-muted);
    background: transparent;
    border: 1px solid var(--color-border-primary);
    border-radius: 8px;
    cursor: pointer;
    transition: color var(--transition-fast), border-color var(--transition-fast);
}

.lang-selector__current:hover {
    color: var(--color-text-primary);
    border-color: var(--color-border-tertiary);
}

.lang-selector__current::after {
    content: '';
    width: 0;
    height: 0;
    border-left: 4px solid transparent;
    border-right: 4px solid transparent;
    border-top: 4px solid currentColor;
    transition: transform var(--transition-fast);
}

.lang-selector.open .lang-selector__current::after {
    transform: rotate(180deg);
}

.lang-selector__dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    display: flex;
    flex-direction: column;
    min-width: 60px;
    background: #0F1012;
    border: 1px solid #161616;
    border-radius: 8px;
    padding: 8px 0;
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    transition: opacity var(--transition-fast), visibility var(--transition-fast);
    z-index: 1001;
}

.lang-selector.open .lang-selector__dropdown {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
}

.lang-selector__option {
    padding: 6px 16px;
    font-family: var(--font-primary);
    font-size: 14px;
    font-weight: 400;
    color: #939886;
    background: transparent;
    border: none;
    cursor: pointer;
    text-align: left;
    transition: color var(--transition-fast);
}

.lang-selector__option:hover {
    color: #FBFCF7;
}

.lang-selector__option.active {
    color: var(--color-accent-primary);
    font-weight: 500;
}

/* ============ Language Selector (Mobile Menu) ============ */

.mobile-menu__lang {
    display: flex;
    justify-content: center;
    margin-bottom: 20px;
}

.lang-selector--mobile {
    width: auto;
}

.lang-selector--mobile .lang-selector__current {
    width: 100%;
    justify-content: center;
}

.lang-selector__dropdown--up {
    top: auto;
    bottom: calc(100% + 8px);
    right: auto;
    left: 0;
}