body {
    font-family: 'Inter', sans-serif;
    background-color: #f8f9fa;
}

.login-card {
    width: 100%;
    max-width: 400px;
    padding: 2rem;
    background-color: white;
    border-radius: 0.5rem;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.05);
    border: 1px solid #dee2e6;
}

.sidebar {
    width: 300px;
    border-right: 1px solid #dee2e6;
    transition: margin-left .3s;
}

.chat-area {
    background-color: #e9ecef;
}

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

.message {
    margin-bottom: 20px;
    display: flex;
}

.message .avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    margin-right: 15px;
}

.message .content {
    background-color: #f8f9fa;
    padding: 10px 15px;
    border-radius: 10px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
    border: 1px solid #dee2e6;
    max-width: 70%;
}

.message.sent {
    flex-direction: row-reverse;
}

.message.sent .content {
    background-color: #0d6efd;
    color: #fff;
}

.message.sent .avatar {
    margin-left: 15px;
    margin-right: 0;
}

.message .timestamp {
    font-size: 0.8rem;
    color: #6c757d;
    margin-top: 5px;
}

.message.sent .timestamp {
    text-align: right;
}

.nav-pills .nav-link {
    color: #495057;
    font-weight: 500;
}

.nav-pills .nav-link.active {
    background-color: #007bff !important;
    color: white !important;
}