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

body {
    font-family: Arial, sans-serif;
    background: #f4f6f9;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;
}

.chat-container {
    width: 800px;
    max-width: 95%;
    background: white;
    border-radius: 16px;
    padding: 20px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.08);
}

h1 {
    text-align: center;
    margin-bottom: 10px;
}

#online-count {
    text-align: center;
    color: #666;
    margin-bottom: 15px;
}

#chats {
    height: 500px;
    overflow-y: auto;
    border: 1px solid #ddd;
    border-radius: 10px;
    padding: 15px;
    background: #fafafa;
    margin-bottom: 15px;
}

#chats p {
    background: #e8f0fe;
    padding: 10px 14px;
    border-radius: 10px;
    margin-bottom: 10px;
    word-wrap: break-word;
}

.system-message {
    background: transparent !important;
    text-align: center;
    color: #777;
    font-style: italic;
}

#guess {
    display: flex;
    gap: 10px;
}

#chat {
    flex: 1;
    resize: none;
    height: 60px;
    padding: 12px;
    border-radius: 10px;
    border: 1px solid #ccc;
    font-size: 14px;
}

button {
    border: none;
    background: #2563eb;
    color: white;
    padding: 0 24px;
    border-radius: 10px;
    cursor: pointer;
    font-weight: bold;
}

button:hover {
    opacity: 0.85;
}

.my-message {
    background: #d1fae5 !important;
}

#chats p.my-message {
    background-color: #d1fae5 !important;
}
#welcome-user {
    text-align: center;
    color: #444;
    margin-bottom: 12px;
    font-weight: bold;
}