body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
    background-color: #f4f7f9;
    color: #333;
    margin: 0;
    padding: 20px;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.modal {
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.6);
    display: flex;
    align-items: center;
    justify-content: center;
}

.modal-content {
    background-color: #2c2c2c;
    color: #f1f1f1;
    margin: auto;
    padding: 20px;
    border: 1px solid #888;
    width: 80%;
    max-width: 400px;
    border-radius: 8px;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2), 0 6px 20px 0 rgba(0,0,0,0.19);
}

.modal-content h2 {
    margin-top: 0;
}

.modal-content ul {
    list-style-type: none;
    padding: 0;
}

.modal-content li {
    margin-bottom: 10px;
}

.warning-text {
    font-style: italic;
    font-size: 0.9em;
    color: #ffc107;
}

.modal-actions {
    text-align: right;
    margin-top: 20px;
}

.modal-actions button {
    margin-left: 10px;
}

.container {
    width: 100%;
    max-width: 800px;
    background-color: #fff;
    padding: 20px 40px;
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid #eee;
    padding-bottom: 15px;
    margin-bottom: 20px;
}

h1 {
    color: #0056b3;
}

#logout-button {
    background-color: #e74c3c;
    color: white;
    border: none;
    padding: 8px 12px;
    border-radius: 4px;
    cursor: pointer;
}

#logout-button:hover {
    background-color: #c0392b;
}

section {
    margin-bottom: 30px;
}

h2 {
    color: #34495e;
    border-bottom: 1px solid #eee;
    padding-bottom: 10px;
}

#users-list {
    list-style: none;
    padding: 0;
}

#users-list li {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px;
    border-radius: 4px;
}

#users-list li:nth-child(odd) {
    background-color: #f9f9f9;
}

.call-button {
    background-color: #2ecc71;
    color: white;
    border: none;
    padding: 8px 12px;
    border-radius: 4px;
    cursor: pointer;
}

.call-button:hover {
    background-color: #27ae60;
}

form label {
    display: block;
    margin-bottom: 5px;
}

form input {
    width: 100%;
    padding: 8px;
    margin-bottom: 15px;
    border: 1px solid #ccc;
    border-radius: 4px;
}

form button {
    background-color: #3498db;
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 4px;
    cursor: pointer;
}

form button:hover {
    background-color: #2980b9;
}