body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

.container {
    display: flex;
    width: 80%;
    margin: 20px auto;
    background: white;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 10px;
    overflow: hidden;
}

.left-column {
    width: 30%;
    background: #2c3e50;
    color: white;
    padding: 20px;
    text-align: center;
}

.profile-section img {
    width: 100px;
    height: 100px;
    border-radius: 50%;
    margin-bottom: 15px;
}

.contact-table {
    width: 100%;
    margin-top: 10px;
}

.contact-table td {
    padding: 5px 10px;
}

.contact-table a {
    color: #1abc9c;
    text-decoration: none;
}

.right-column {
    width: 70%;
    padding: 20px;
}

.section {
    margin-bottom: 20px;
}

.btn-toggle, .btn-add {
    display: block;
    width: 100%;
    padding: 10px;
    margin-top: 10px;
    background: #1abc9c;
    color: white;
    border: none;
    cursor: pointer;
    border-radius: 5px;
    font-size: 16px;
}

.btn-toggle:hover, .btn-add:hover {
    background: #16a085;
}

.hidden {
    display: none;
}

canvas {
    width: 100% !important;
    max-height: 300px;
    margin-top: 15px;
}