.navigation{background:rgba(255,255,255,.95);backdrop-filter:blur(10px);border-bottom:1px solid rgba(0,0,0,.1);position:fixed;top:0;left:0;right:0;z-index:1000}.nav-container{max-width:1200px;margin:0 auto;padding:0 20px;display:flex;align-items:center;justify-content:space-between;height:70px}.nav-logo{font-size:1.5rem;font-weight:700;color:#667eea;text-decoration:none;transition:color .2s}.nav-logo:hover{color:#764ba2}.nav-menu{display:flex;align-items:center;gap:40px}.nav-link{color:#374151;text-decoration:none;font-weight:500;transition:color .2s;position:relative}.nav-link:hover{color:#667eea}.nav-link:after{content:"";position:absolute;bottom:-5px;left:0;width:0;height:2px;background:#667eea;transition:width .2s}.nav-link:hover:after{width:100%}.nav-toggle{display:none;flex-direction:column;gap:4px;background:none;border:none;cursor:pointer;padding:4px}.nav-toggle-line{width:25px;height:3px;background:#374151;border-radius:2px;transition:all .3s}@media (max-width:768px){.nav-toggle{display:flex}.nav-menu{position:fixed;top:70px;left:0;right:0;background:white;flex-direction:column;gap:0;padding:20px;border-bottom:1px solid rgba(0,0,0,.1);transform:translateY(-100%);opacity:0;visibility:hidden;transition:all .3s}.nav-menu-open{transform:translateY(0);opacity:1;visibility:visible}.nav-link{padding:15px 0;border-bottom:1px solid #f3f4f6;width:100%;text-align:center}.nav-link:last-child{border-bottom:none}.nav-link:after{display:none}}