/* Header & navigation */
.site-header {
    position: sticky;
    top: 0;
    z-index: 1000;
    background: rgb(251 252 252 / 0.9);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--color-border);
    box-shadow: none;
    transition: box-shadow var(--transition);
}

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

.header-top {
    background: var(--theme-topbar, var(--primary-dark));
    color: rgb(255 255 255 / 0.88);
    font-size: 0.8125rem;
    letter-spacing: 0.01em;
    border-bottom: none;
}

.header-top-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding-block: 0.35rem;
    flex-wrap: wrap;
}

.header-top-left,
.header-top-right {
    display: flex;
    align-items: center;
    gap: 1.25rem;
    flex-wrap: wrap;
}

.header-top-left span,
.header-top-right > span {
    display: inline-flex;
    align-items: center;
    gap: 0.35rem;
}

.social-icons {
    display: flex;
    align-items: center;
    gap: 0.45rem;
}

.social-icons__link {
    width: 2rem;
    height: 2rem;
    border-radius: var(--radius-full);
    background: rgb(255 255 255 / 0.08);
    color: inherit;
    display: grid;
    place-items: center;
    transition: background var(--transition), color var(--transition), transform var(--transition);
}

.social-icons__link:hover {
    background: rgb(255 255 255 / 0.16);
    transform: translateY(-1px);
}

.social-icons__svg {
    display: block;
    fill: currentColor;
}

.social-icons--footer .social-icons__link {
    background: var(--color-bg);
    border: 1px solid var(--color-border);
    color: var(--color-text-muted);
}

.social-icons--footer .social-icons__link:hover {
    background: var(--color-primary);
    border-color: var(--color-primary);
    color: #fff;
}

.header-main { padding-block: 0.85rem; }

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1.5rem;
}

.logo img {
    height: 48px;
    width: auto;
    object-fit: contain;
}

.main-nav {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.nav-item { position: relative; }

.nav-item > a,
.main-nav > .nav-item > a {
    display: inline-flex;
    align-items: center;
    font-size: var(--font-size-sm);
    transition: background var(--transition), color var(--transition);
    font-weight: 500;
    color: var(--color-text-muted);
    padding: 0.4rem 0.65rem;
    border-radius: var(--radius-sm);
}

.main-nav > .nav-item > a:hover,
.main-nav > .nav-item > a[aria-current="page"] {
    color: var(--color-primary);
    background: var(--color-primary-soft);
}

.nav-dropdown {
    position: absolute;
    top: calc(100% + 0.35rem);
    left: 0;
    min-width: 220px;
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    padding: 0.5rem;
    opacity: 0;
    visibility: hidden;
    transform: translateY(8px);
    transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
}

.nav-item:hover .nav-dropdown {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-dropdown a {
    display: block;
    padding: 0.625rem 0.875rem;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.nav-dropdown a:hover {
    background: var(--color-bg);
    color: var(--color-primary);
}

.lang-switcher select {
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: 0.5rem 0.75rem;
    font: inherit;
    font-size: var(--font-size-sm);
    background: var(--color-surface);
    cursor: pointer;
}

.mobile-menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    width: 44px;
    height: 44px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-surface);
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

.mobile-menu-toggle span {
    display: block;
    width: 20px;
    height: 2px;
    background: var(--color-text);
    border-radius: 2px;
    transition: var(--transition);
}

/* Footer styles → modular/footer.css */

/* Legacy aliases (admin önizleme vb. için güvenli fallback) */
.footer-content { display: contents; }
.footer-column h4 { color: inherit; }
.footer-about-text { color: inherit; }
.footer-bottom { display: contents; }