* {
    box-sizing: border-box;
    font-family: system-ui, -apple-system, sans-serif;
}

body {
    background: #f2f4f7;
    margin: 0;
    padding: 20px;
}

.container {
    max-width: 500px;
    margin: auto;
    background: #fff;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

h1 {
    text-align: center;
}

input,
select,
button {
    width: 100%;
    padding: 12px;
    margin: 10px 0;
    font-size: 1rem;
}

button {
    background: #0070f3;
    color: white;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

button:hover {
    background: #0059c1;
}

.admin button {
    background: #e63946;
}

.success {
    color: green;
    text-align: center;
}

.error {
    color: red;
    text-align: center;
}

ul {
    list-style: none;
    padding: 0;
}

ul li {
    padding: 10px;
    border-bottom: 1px solid #ddd;
}