body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    margin: 0;
    padding: 1rem;
    background-color: #f4f4f4;
}

#login-screen, #ops-tool {
    max-width: 600px;
    margin: 0 auto;
    padding: 1rem;
    background-color: #fff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

#login-screen {
    text-align: center;
}

#pin-input {
    font-size: 2rem;
    text-align: center;
    width: 100%;
    margin: 1rem 0;
    padding: 0.5rem;
    box-sizing: border-box;
}

button {
    width: 100%;
    padding: 1rem;
    font-size: 1.2rem;
    cursor: pointer;
    background-color: #007aff;
    color: white;
    border: none;
    border-radius: 8px;
    margin-top: 0.5rem;
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1rem;
}

#user-info {
    font-weight: bold;
}

#ops-lead-window {
    background-color: #ffcc00;
    padding: 1rem;
    text-align: center;
    font-weight: bold;
    border-radius: 8px;
    margin-bottom: 1rem;
}

form {
    margin-top: 1rem;
    border-top: 1px solid #ddd;
    padding-top: 1rem;
}

form h2 {
    margin-top: 0;
}

input, textarea, select {
    width: 100%;
    padding: 0.8rem;
    margin-bottom: 0.5rem;
    box-sizing: border-box;
    border: 1px solid #ccc;
    border-radius: 4px;
    font-size: 1rem;
}

.hidden {
    display: none;
}