/* Îļþ4: style.css */
body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f0f2f5;
}

.login-container {
    width: 300px;
    margin: 100px auto;
    padding: 20px;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.chat-container {
    max-width: 800px;
    margin: 20px auto;
    background: white;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.header {
    padding: 20px;
    border-bottom: 1px solid #ddd;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.messages {
    height: 500px;
    overflow-y: auto;
    padding: 20px;
}

.message {
    margin: 10px 0;
    padding: 10px;
    border-radius: 8px;
    max-width: 70%;
}

.message.sent {
    background: #0084ff;
    color: white;
    margin-left: auto;
}

.message.received {
    background: #e4e6eb;
    margin-right: auto;
}

.time {
    font-size: 0.8em;
    opacity: 0.8;
    display: block;
    margin-top: 5px;
}

.input-area {
    padding: 20px;
    display: flex;
    gap: 10px;
    border-top: 1px solid #ddd;
}

input[type="text"], input[type="password"] {
    flex: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

button {
    padding: 10px 20px;
    background: #0084ff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background: #0069d9;
}