/* Public Header */
.site-header {
    background-color: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
    height: var(--header-height);
}

.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 100%;
}

.site-logo {
    font-size: var(--font-size-xl);
    font-weight: 700;
    color: var(--color-primary);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.site-logo:hover {
    color: var(--color-primary-dark);
}

/* Desktop Navigation */
.main-nav {
    display: none;
    align-items: center;
    gap: var(--space-lg);
}

.nav-link {
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-text-light);
    padding: var(--space-sm) 0;
    border-bottom: 2px solid transparent;
    transition: all var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--color-primary);
    border-bottom-color: var(--color-primary);
}

/* Language Switcher */
.lang-switcher {
    display: flex;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.lang-btn {
    padding: 0.2rem 0.6rem;
    font-size: var(--font-size-xs);
    font-weight: 600;
    color: var(--color-text-muted);
    background-color: transparent;
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
    text-decoration: none;
}

.lang-btn:hover {
    background-color: var(--color-surface-hover);
}

.lang-btn.active {
    background-color: var(--color-primary);
    color: #fff;
}

/* Hamburger Button */
.hamburger {
    display: flex;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-sm);
    cursor: pointer;
    z-index: 200;
}

.hamburger span {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--color-text);
    border-radius: 2px;
    transition: all var(--transition-base);
}

.nav-open .hamburger span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.nav-open .hamburger span:nth-child(2) {
    opacity: 0;
}

.nav-open .hamburger span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.mobile-nav {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-surface);
    padding: var(--space-xl);
    flex-direction: column;
    gap: var(--space-md);
    z-index: 99;
    overflow-y: auto;
}

.nav-open .mobile-nav {
    display: flex;
}

.mobile-nav .nav-link {
    font-size: var(--font-size-lg);
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--color-border);
}

.mobile-nav .lang-switcher {
    margin-top: var(--space-md);
    align-self: flex-start;
}

/* Footer */
.site-footer {
    background-color: var(--color-surface);
    border-top: 1px solid var(--color-border);
    padding: var(--space-xl) 0;
    margin-top: auto;
}

.footer-inner {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    text-align: center;
}

.footer-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

/* Desktop */
@media (min-width: 768px) {
    .main-nav {
        display: flex;
    }

    .hamburger {
        display: none;
    }

    .mobile-nav {
        display: none !important;
    }

    .footer-inner {
        flex-direction: row;
        justify-content: space-between;
    }
}