body {
    background-color: #1a1a1a;
    background-image: url('https://www.transparenttextures.com/patterns/carbon-fibre.png');
    color: #3dfc03;
    font-family: 'VT323', monospace;
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
    margin: 0;
}

.container {
    text-align: center;
    background: #2c2c2c;
    padding: 20px;
    border: 5px solid #000;
    box-shadow: 10px 10px 0px #555;
}

h1 {
    font-size: 2.5rem;
    margin-top: 0;
    text-shadow: 3px 3px #000;
}

#chat-box {
    width: 650px;
    height: 400px;
    background: #000;
    border: 3px solid #555;
    padding: 15px;
    overflow-y: auto;
    text-align: left;
    margin-bottom: 15px;
}

.input-area {
    display: flex;
    gap: 5px;
}

input {
    flex-grow: 1;
    background: #111;
    border: 2px solid #3dfc03;
    color: #fff;
    padding: 10px;
    font-family: 'VT323', monospace;
    font-size: 1.2rem;
}

button {
    background: #3dfc03;
    border: none;
    color: #000;
    padding: 10px 20px;
    font-family: 'VT323', monospace;
    font-size: 1.2rem;
    cursor: pointer;
    font-weight: bold;
}

button:hover {
    background: #2db302;
}

.label { font-weight: bold; }
.bot { color: #ffaa00; margin: 5px 0; }
.user { color: #ffffff; margin: 5px 0; }