body{background-color:#f9f9f9;color:#333;font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Oxygen,Ubuntu,Cantarell,Open Sans,Helvetica Neue,sans-serif;line-height:1.6;margin:0;padding:0}.app-header{background-color:#35495e;box-shadow:0 2px 4px #0000001a;color:#fff;padding:1rem 2rem}.app-title{font-size:1.5rem;margin:0 0 .5rem}.main-nav{display:flex;gap:1.5rem}.nav-item{color:#fff;font-weight:500;text-decoration:none;transition:color .3s}.nav-item:hover{color:#41b883}.app-content{min-height:calc(100vh - 160px)}.app-footer{background-color:#35495e;color:#fff;margin-top:2rem;padding:1rem;text-align:center}