@import url('https://fonts.googleapis.com/css2?family=Open+Sans&display=swap');

* {
    box-sizing: border-box;
}

body {
    font-family: 'Open Sans', sans-serif;
    margin: 0;
    padding: 0;
    color: #333;
    background-color: #fff;
    line-height: 1.75;
}

.container {
    display: flex;
    max-width: 960px;
    margin: 40px auto;
    padding: 0 10px;
}

.sidebar {
    flex: 0 0 220px;
    padding-right: 2rem;
    display: flex;
    flex-direction: column;
    align-items: center;
}

.content {
    flex: 1 1 auto;
}

h1 {
    font-size: 1.75rem;
    font-weight: bold;
    margin-bottom: 0;
}

h1 a {
    text-decoration: none;
    color: #000;
}

p.subtitle {
    font-size: 0.9rem;
    line-height: 1.5;
    margin-top: 0.5rem;
    color: #555;
    text-align: center;
}

nav {
    border: 1px solid #ddd;
    border-radius: 8px;
    overflow: hidden;
    margin-top: 2rem;
    width: 100%;
}

nav ul {
    list-style: none;
    padding: 0;
    margin: 0;
    background-color: #fff;
}

nav ul li {
    border-top: 1px solid #eee;
}

nav ul li a {
    text-decoration: none;
    color: #007bff;
    font-size: 1rem;
    display: block;
    padding: 0..5rem 1rem;
    text-align: center;
}

nav ul li a:hover {
    text-decoration: underline;
}

nav ul li.active a {
    background-color: #4a6983; /* Darker blue-grey */
    color: white;
}

.content h2 {
    font-size: 1.5rem;
    font-weight: bold;
    margin-top: 0;
    margin-bottom: 1rem;
    border-bottom: 1px solid #eee;
    padding-bottom: 0.5rem;
}

@media (max-width: 768px) {
    .container {
        flex-direction: column;
    }

    .sidebar {
        flex-basis: auto;
        width: 100%;
        padding-right: 0;
        margin-bottom: 2rem;
        align-items: center;
    }
}

.profile-pic {
    width: 225px;
    height: 225px;
    border-radius: 50%;
    margin-bottom: 1rem;
}

.video-list {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.video-item {
    display: flex;
    gap: 1rem;
}

.video-item img {
    width: 160px;
    height: 90px;
    object-fit: cover;
}

.video-details {
    flex: 1;
}

.video-details h3 {
    margin-top: 0;
    font-size: 1.2rem;
}

.video-details p {
    margin-top: 0.5rem;
    font-size: 0.9rem;
}

.blog-list {
    list-style: none;
    padding: 0;
}

.blog-entry {
    display: flex;
    align-items: flex-start;
    margin-bottom: 2rem;
    gap: 1.5rem;
}

.blog-thumbnail {
    width: 160px;
    height: 106px;
    object-fit: cover;
    flex-shrink: 0;
}

.blog-info {
    flex: 1;
}

.blog-info a {
    font-size: 1.1rem;
    font-weight: bold;
    color: #333;
    text-decoration: none;
}

.blog-info a:hover {
    text-decoration: underline;
}

.blog-date {
    font-size: 0.9rem;
    color: #666;
    margin-top: 0.5rem;
}

.book-entry {
    border-bottom: 1px solid #eee;
    padding-bottom: 1.5rem;
    margin-bottom: 1.5rem;
}

.book-entry:last-child {
    border-bottom: none;
    margin-bottom: 0;
}

.book-info h3 {
    margin-top: 0;
    font-size: 1.2rem;
}

.book-covers {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 10px;
}

.book-covers img {
    width: 120px;
    height: 160px;
    object-fit: cover;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.book-entry h3 {
    font-weight: 700 !important;
}