body {
    font-family: sans-serif;
    padding: 0px;
}

#userList li {
    cursor: pointer;
    padding: 5px;
}

#userList li:hover {
    background-color: #eee;
}

.call-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.6);
    display: none;
    align-items: center;
    justify-content: center;
    z-index: 50;
}

/* Chat window styles */
#chat-window {
    height: 100vh !important;
    display: flex;
    flex-direction: column;
}

#chat-messages {
    flex: 1;
    overflow-y: auto;
    height: calc(100vh - 140px) !important; /* Account for header and input area */
}