.site-header{position:-webkit-sticky;position:sticky;top:0;z-index:var(--z-sticky);background:var(--color-bg);border-bottom:1px solid var(--color-border);transition:box-shadow var(--transition-normal)}.site-header.scrolled{box-shadow:var(--shadow-sm)}.header-container{max-width:var(--container-max);margin:0 auto;padding:0 var(--space-md);height:70px;display:flex;align-items:center;justify-content:space-between;gap:var(--space-lg);direction:rtl}.logo{display:inline-flex;align-items:center;font-size:var(--text-xl);font-weight:700;color:var(--color-text);transition:opacity var(--transition-fast)}.logo,.logo:hover{text-decoration:none}.logo:hover{opacity:.8}.logo img{height:40px;width:auto;display:block}.logo:focus-visible{outline:2px solid var(--color-accent);outline-offset:4px;border-radius:var(--radius-sm)}.main-nav{display:flex;align-items:center;gap:var(--space-xs);flex:1 1;justify-content:flex-start}.nav-link{font-size:var(--text-sm);font-weight:600;color:var(--color-text-secondary);text-decoration:none;padding:10px 16px;border-radius:var(--radius-md);transition:all var(--transition-fast);white-space:nowrap}.nav-link:hover{color:var(--color-text);background:var(--color-bg-subtle);text-decoration:none}.nav-link.active{color:var(--color-accent);background:var(--color-accent-light)}.nav-link:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px}.header-actions{display:flex;align-items:center;gap:var(--space-sm);flex-shrink:0}.header-cta{font-size:var(--text-sm)}.mobile-menu-toggle{display:none;background:none;border:none;cursor:pointer;padding:var(--space-xs);color:var(--color-text);transition:opacity var(--transition-fast)}.mobile-menu-toggle:hover{opacity:.7}.mobile-menu-toggle:focus-visible{outline:2px solid var(--color-accent);outline-offset:2px;border-radius:var(--radius-sm)}.hamburger-icon{width:24px;height:18px;display:flex;flex-direction:column;justify-content:space-between}.hamburger-icon:after,.hamburger-icon:before{content:"";display:block;height:2px;background:currentColor;transition:transform var(--transition-normal)}.hamburger-icon:after,.hamburger-icon:before{width:100%}.hamburger-line{display:block;height:2px;background:currentColor;transition:opacity var(--transition-normal)}.mobile-menu{position:fixed;top:70px;right:-100%;bottom:0;width:280px;max-width:85vw;background:var(--color-bg);border-left:1px solid var(--color-border);padding:var(--space-lg);transition:right var(--transition-normal);overflow-y:auto;z-index:var(--z-fixed)}.mobile-menu.active{right:0}.mobile-nav{display:flex;flex-direction:column;gap:var(--space-xs)}.mobile-nav-link{font-size:var(--text-base);font-weight:600;color:var(--color-text);text-decoration:none;padding:12px 16px;border-radius:var(--radius-md);transition:all var(--transition-fast);display:block}.mobile-nav-link:hover{background:var(--color-bg-subtle);text-decoration:none}.mobile-nav-link.active{color:var(--color-accent);background:var(--color-accent-light)}.mobile-menu-backdrop{position:fixed;top:70px;right:0;bottom:0;left:0;background:rgba(0,0,0,.5);opacity:0;pointer-events:none;transition:opacity var(--transition-normal);z-index:calc(var(--z-fixed) - 1)}.mobile-menu-backdrop.active{opacity:1;pointer-events:auto}@media (max-width:768px){.header-container{height:60px;gap:var(--space-md)}.header-actions .btn,.main-nav{display:none}.mobile-menu-toggle{display:flex;align-items:center;justify-content:center;flex-direction:column}.logo img{height:32px}}@media (max-width:480px){.header-container{padding:0 var(--space-sm)}.mobile-menu{width:100%;max-width:100%}}[data-theme=dark] .mobile-menu-backdrop{background:rgba(0,0,0,.7)}