.app{min-height:100vh;display:flex;flex-direction:column}.nav-header{padding:1rem 2rem;background:#16213e;border-bottom:1px solid #2a2a4a;display:flex;align-items:center;gap:2rem}.title{margin:0;font-size:1.25rem}.nav{display:flex;gap:1.5rem}.nav a{color:#7eb8da;text-decoration:none}.nav a:hover{text-decoration:underline}.nav a.router-link-active{color:#fff;font-weight:600}.lang-switch{margin-left:auto;display:flex;gap:.5rem}.lang-switch button{padding:.25rem .75rem;font-size:.8rem;border-radius:999px;border:1px solid #2a2a4a;background:transparent;color:#aab;cursor:pointer}.lang-switch button.active{background:#4ecdc4;border-color:#4ecdc4;color:#fff}.main{flex:1}