body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;margin:0;background-color:#f4f7f6;color:#333}.app-container{display:flex;flex-direction:column;min-height:100vh}.header{background-color:#2c3e50;color:#fff;padding:1rem 2rem;display:flex;justify-content:space-between;align-items:center;box-shadow:0 2px 4px #0000001a}.header h1{margin:0;font-size:1.5rem}.nav-links{display:flex;gap:1rem;align-items:center}.nav-link{color:#fff;text-decoration:none;font-weight:700;padding:.5rem 1rem;border:1px solid #fff;border-radius:4px;transition:all .3s}.nav-link:hover{background-color:#fff;color:#2c3e50}.logout-btn{background:#e74c3c;color:#fff;border:none;padding:.5rem 1rem;border-radius:4px;font-weight:700;cursor:pointer;transition:opacity .2s}.logout-btn:hover{opacity:.8}.main-content{flex:1;padding:2rem;max-width:1200px;margin:0 auto;width:100%;box-sizing:border-box}.loading-screen{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100vh;width:100%}.spinner{width:50px;height:50px;border:5px solid #eee;border-top-color:#2c3e50;border-radius:50%;animation:spin 1s linear infinite;margin-bottom:1rem}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(1turn)}}.toast-container{position:fixed;bottom:2rem;left:50%;transform:translate(-50%);background-color:#333;color:#fff;padding:.75rem 1.5rem;border-radius:8px;box-shadow:0 4px 12px #0003;z-index:9999;font-size:.9rem;font-weight:500}.toast-enter-active,.toast-leave-active{transition:all .3s ease}.toast-enter-from,.toast-leave-to{opacity:0;transform:translate(-50%,20px)}