.navbar{background:var(--bg-light);box-shadow:var(--shadow);padding:1rem 2rem;position:sticky;top:0;z-index:1000}.nav-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center}.logo{font-size:1.8rem;font-weight:bold;color:var(--primary-color);text-decoration:none}.nav-menu{display:flex;list-style:none;gap:2rem}.nav-link{color:var(--text-dark);text-decoration:none;font-weight:500;transition:var(--transition);padding:0.5rem 1rem;border-radius:4px}.nav-link:hover{color:var(--primary-color);background:var(--gray-100)}.hamburger{display:none;flex-direction:column;cursor:pointer;gap:4px}.hamburger span{width:25px;height:3px;background:var(--text-dark);transition:var(--transition)}@media (max-width:768px){.hamburger{display:flex}.nav-menu{position:fixed;left:-100%;top:54px;flex-direction:column;background:var(--bg-light);width:100%;text-align:center;transition:var(--transition);box-shadow:var(--shadow);padding:2rem 0;gap:1rem}.nav-menu.active{left:0}.nav-link{padding:1rem;display:block}}.hamburger.active span:nth-child(1){transform:rotate(45deg) translate(5px,5px)}.hamburger.active span:nth-child(2){opacity:0}.hamburger.active span:nth-child(3){transform:rotate(-45deg) translate(5px,-5px)}