body {
    font-family: Arial, sans-serif;
    background: #f2f3f7;
    margin: 0;
}
.container {
    max-width: 700px;
    margin: 30px auto;
    background: white;
    padding: 20px;
    border-radius: 8px;
}
h1, h2 {
    background: #0057b7;
    color: white;
    padding: 10px;
    border-radius: 6px;
}
.message-row {
    display: flex;
    align-items: center;
    padding: 10px;
    border-bottom: 1px solid #eee;
    text-decoration: none;
    color: #333;
}
.message-row img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}
.message-info {
    flex: 1;
    margin-left: 10px;
}
.status {
    font-size: 20px;
}
.status.unread {
    color: red;
}
.status.read {
    color: green;
}
.bubble {
    max-width: 80%;
    margin: 10px;
    padding: 10px;
    border-radius: 8px;
    background: #e2e2e2;
}
.bubble.me {
    background: #c7e8ca;
    text-align: right;
    margin-left: auto;
}
.bubble.client {
    background: #f1f1f1;
    text-align: left;
}
.back {
    display: inline-block;
    margin-bottom: 10px;
    text-decoration: none;
}