.header{z-index:100;padding:16px 0;position:sticky;top:0}.header-container{justify-content:space-between;align-items:center;display:flex}.logo-section h1{letter-spacing:-.5px;margin-bottom:2px;font-size:24px;font-weight:800}.tagline{color:var(--text-secondary);text-transform:uppercase;letter-spacing:1px;font-size:11px}.main-nav{gap:32px;display:flex}.nav-link{color:var(--text-secondary);font-size:14px;font-weight:500;transition:color .2s;position:relative}.nav-link:hover,.nav-link.active{color:var(--text-primary)}.nav-link:after{content:"";background-color:var(--accent-color);width:0;height:2px;transition:width .3s;position:absolute;bottom:-4px;left:0}.nav-link:hover:after,.nav-link.active:after{width:100%}.actions-section{gap:12px;display:flex}.cart-btn{position:relative}.cart-badge{background-color:var(--danger-color);color:#fff;border-radius:50%;justify-content:center;align-items:center;width:18px;height:18px;font-size:10px;font-weight:700;display:flex;position:absolute;top:-8px;right:-8px;box-shadow:0 2px 4px #0003}.desktop-nav{align-items:center;gap:32px;display:flex}.mobile-menu-btn{color:var(--text-primary);cursor:pointer;background:0 0;border:none;font-size:28px;display:none}@media (max-width:768px){.desktop-nav{background:var(--bg-primary);box-shadow:var(--shadow-md);border-top:1px solid var(--border-color);flex-direction:column;padding:24px;display:none;position:absolute;top:100%;left:0;right:0}.desktop-nav.open{display:flex}.main-nav{flex-direction:column;align-items:flex-start;gap:16px;width:100%;margin-bottom:24px}.actions-section{flex-direction:column;align-items:stretch;width:100%}.actions-section .btn{margin:0!important}.mobile-menu-btn{display:block}}