/* General styles */
body {
    margin: 0;
    font-family: Arial, sans-serif;
    background-color: #121212;
    color: #e0e0e0;
}

header {
    background-color: #2a2a2a;
    padding: 10px 20px;
    text-align: center;
    border-bottom: 1px solid #333;
    color: #fff;
}

main {
    padding: 10px;
}

/* Loading spinner */
#loading {
    display: none;
    text-align: center;
    margin-top: 50px;
}

.spinner {
    border: 4px solid #444;
    border-top: 4px solid #1a73e8;
    border-radius: 50%;
    width: 30px;
    height: 30px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* Chat list */
.chat {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: #1e1e1e;
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 10px;
    cursor: pointer;
    transition: background-color 0.2s ease;
}

.chat:hover {
    background-color: #2c2c2c;
}

.chat-info h2 {
    margin: 0;
    font-size: 1rem;
    font-weight: bold;
    color: #fff;
}

.chat-info p {
    margin: 5px 0 0;
    font-size: 0.9rem;
    color: #aaa;
}