body {
    margin: 0;
    padding: 0;
    font-family: system-ui, -apple-system, sans-serif;
    background-color: #f6f8fb;
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-container {
    background-color: white;
    padding: 2rem;
    border-radius: 12px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
    text-align: center;
    width: 100%;
    max-width: 400px;
}

.banner {
    background-color: #5514b4;
    color: white;
    padding: 1.25rem;
    border-radius: 8px;
    margin-bottom: 1.5rem;
}

.banner h1 {
    margin: 0;
    font-size: 22px;
    font-weight: 600;
}

.login-button {
    background-color: #5514b4;
    color: white;
    border: none;
    padding: 14px 28px;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 500;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.login-button:hover {
    background-color: #3d0e85;
}

.login-button:focus {
    outline: 3px solid #5514b4;
    outline-offset: 2px;
}

.session-expired-box {
    background-color: #fff3cd;
    border: 1px solid #ffeeba;
    color: #856404;
    padding: 12px;
    margin-bottom: 20px;
    border-radius: 8px;
    text-align: center;
}

.session-expired-box p {
    margin: 0;
    font-size: 14px;
}