*{margin:0;padding:0;box-sizing:border-box}body{font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif;background-color:#f5f5f5;color:#333}.App{min-height:100vh}.navbar{background:linear-gradient(135deg,#667eea,#764ba2);color:#fff;padding:0;box-shadow:0 2px 4px #0000001a}.nav-container{max-width:1200px;margin:0 auto;display:flex;justify-content:space-between;align-items:center;padding:1rem 2rem}.nav-brand{font-size:1.5rem;font-weight:700;color:#fff;text-decoration:none;display:flex;align-items:center;gap:.5rem}.nav-menu{display:flex;gap:2rem}.nav-link{color:#fff;text-decoration:none;font-weight:500;transition:opacity .3s}.nav-link:hover{opacity:.8}.container{max-width:1200px;margin:2rem auto;padding:0 2rem}.content{background:#fff;border-radius:8px;padding:2rem;box-shadow:0 2px 8px #0000001a}.loading{text-align:center;padding:2rem;color:#666}.error{background-color:#fee;border:1px solid #fcc;color:#c33;padding:1rem;border-radius:4px;margin-bottom:1rem}.success{background-color:#efe;border:1px solid #cfc;color:#3c3;padding:1rem;border-radius:4px;margin-bottom:1rem}button{background-color:#667eea;color:#fff;border:none;padding:.75rem 1.5rem;border-radius:4px;cursor:pointer;font-size:1rem;transition:background-color .3s}button:hover{background-color:#764ba2}input,textarea,select{width:100%;padding:.75rem;margin-bottom:1rem;border:1px solid #ddd;border-radius:4px;font-size:1rem;font-family:inherit}input:focus,textarea:focus,select:focus{outline:none;border-color:#667eea;box-shadow:0 0 0 3px #667eea1a}form{display:flex;flex-direction:column}.form-group{margin-bottom:1.5rem}.form-group label{display:block;margin-bottom:.5rem;font-weight:500}.button-group{display:flex;gap:1rem;justify-content:flex-end}.button-group button{margin-bottom:0}