body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    display: flex; /* Make sure the body takes up the viewport */
    justify-content: center;
    align-items: center;
    min-height: 100vh; /* Full viewport height */
    background-color: #f0f2f5; /* Light background */
}

.chat-container {
    width: 100%;
    max-width: 400px; /* Typical mobile/chat app width */
    height: 100vh; /* Full height on small screens */
    display: flex;
    flex-direction: column; /* Stack header, history, and input vertically */
    background-color: white;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}

/* 1. Header Styling */
.chat-header {
    padding: 15px;
    background-color: #008069; /* WhatsApp Green */
    color: white;
    text-align: center;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    flex-shrink: 0; /* Prevents the header from shrinking */
}

/* 2. Chat History Styling */
.chat-history {
    flex-grow: 1; /* This is the key: makes it take up all available space */
    padding: 10px;
    overflow-y: auto; /* Allows scrolling of messages */
    background-color: #e5ddd5; /* Chat background color */
}

.message {
    padding: 8px 12px;
    margin: 5px 0;
    border-radius: 18px;
    max-width: 70%;
    word-wrap: break-word;
    font-size: 0.9em;
    line-height: 1.3;
}

.incoming {
    background-color: #ffffff; /* White background */
    align-self: flex-start;
    margin-right: auto;
    border-bottom-left-radius: 2px;
}

.outgoing {
    background-color: #dcf8c6; /* Light green background */
    align-self: flex-end;
    margin-left: auto;
    text-align: right;
    border-bottom-right-radius: 2px;
}
.chat-history {
    display: flex; /* Makes messages stack correctly */
    flex-direction: column;
    overflow-y: scroll;
}


/* 3. Chat Input Styling */
.chat-input-area {
    display: flex;
    align-items: center;
    padding: 8px;
    background-color: #f0f0f0;
    border-top: 1px solid #ccc;
    flex-shrink: 0; /* Prevents the input area from shrinking */
}

.chat-input {
    flex-grow: 1; /* Makes the text input take most of the available horizontal space */
    padding: 10px 15px;
    border: none;
    border-radius: 20px;
    margin: 0 8px;
    font-size: 16px;
    outline: none;
}

.icon-btn {
    background: none;
    border: none;
    font-size: 20px;
    cursor: pointer;
    color: #008069;
    width: 38px;
    height: 38px;
    display: flex;
    justify-content: center;
    align-items: center;
    border-radius: 50%;
    transition: background-color 0.2s;
}

.icon-btn:hover {
    background-color: #e0e0e0;
}

.attachment-btn {
    font-weight: bold;
    font-size: 24px;
}

.send-btn {
    margin-left: -5px; /* Pull the send button closer to the record button */
}

.record-btn, .send-btn {
    color: white;
    background-color: #008069;
    margin-left: 5px;
}
.record-btn:hover, .send-btn:hover {
    background-color: #006b58;
}

/* Optional: Make it look better on very large screens */
@media (min-width: 768px) {
    .chat-container {
        height: 90vh;
        border-radius: 10px;
    }
}