* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {

    background: #111827;

    color: white;

    font-family: Arial, sans-serif;

    height: 100vh;

    display: flex;

    justify-content: center;

    align-items: center;
}

.container {

    width: 800px;

    height: 700px;

    background: #1f2937;

    border-radius: 12px;

    padding: 20px;

    display: flex;

    flex-direction: column;
}

h1 {

    margin-bottom: 20px;

    text-align: center;
}

#chat {

    flex: 1;

    overflow-y: auto;

    padding: 10px;

    border: 1px solid #374151;

    border-radius: 8px;
}

.message {

    margin-bottom: 12px;

    padding: 10px;

    border-radius: 8px;
}

.user {

    background: #2563eb;
}

.bot {

    background: #374151;
}

.input-area {

    display: flex;

    gap: 10px;

    margin-top: 20px;
}

input {

    flex: 1;

    padding: 12px;

    border: none;

    border-radius: 8px;
}

button {

    padding: 12px 20px;

    border: none;

    border-radius: 8px;

    cursor: pointer;
}