@import url('https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap');

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}


nav .logo,
nav .nav-links {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 20px;
}

nav .logo img {
    width: 40px;
    height: 40px;
    border-radius: 50%;
}

nav .logo a,
nav .nav-links a {
    font-size: 15px;
    color: #ffffff;
    font-weight: bold;
}

nav .nav-links {
    justify-content: flex-end;
    max-width: 100%;
    gap: 20px;
    flex-wrap: wrap;
}

nav .nav-links a {
    color: white;
    text-decoration: none;
    padding: 10px 20px;
    margin: 10 10px;
    border-radius: 15px;
    transition: background-color 0.3s ease;
    margin-bottom: 20px;
}

nav .nav-links a:hover {
    background-color: #000000;
}

nav .nav-links a.selected {
    background-color: #007bff;
    color: white;
}

body .blog-list {
    margin-top: 30px;
    display: flex;
    flex-direction: row;
    flex-wrap: wrap;
    gap: 10px;
    padding: 20px 20px 20px 20px;
    /* Added head spacing */
    border-radius: 10px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

body .blog-list li {
    list-style-type: none;
}

body .blog-list a {
    display: inline-block;
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    text-decoration: none;
    text-align: center;
    border-radius: 20px;
    transition: background-color 0.3s ease;
    min-width: 117px;
}

body .blog-list a:hover {
    background-color: #00f0f8;
}

body {
    font-family: 'Poppins', sans-serif;
    display: flex;
    justify-content: center;
    height: 100vh;
    color: #fff;
    background-color: #114549;
    padding: 50px;
}

body .container {
    max-width: 1000px;
    min-width: 60%;
}

body .container header {
    background: url(images/quant.jpg) center / cover no-repeat;
    backdrop-filter: blur(10px);
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    min-height: 400px;
    padding: 20px 50px 60px;
    border-radius: 16px;
}

body .container header .category {
    font-size: 1.2rem;
    font-weight: bold;
    letter-spacing: 0.3rem;
    text-transform: uppercase;
    text-shadow: 0 0 8px rgba(0, 0, 0, 0.5);
}

body .container header .info {
    text-align: center;
}

body .container header .info .tags i,
body .container header .info .tags span {
    text-shadow: 0 0 8px rgba(0, 0, 0, 0.5);
}

body .container header .info .tags i {
    font-size: 18px;
    margin-right: 8px;
}

body .container header .info .tags span {
    font-size: 1.2rem;
}

body .container header .info .title {
    margin: 20px 0;
    font-size: 3rem;
    font-weight: bold;
    text-shadow: 0 0 8px rgba(0, 0, 0, 0.5);
}

body .container header .info .subtitle {
    min-width: 70%;
    margin: 0 auto 20px;
    font-size: 1rem;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.5);
    padding: 0.5em;
}

body .details {
    display: flex;
    justify-content: space-between;
    background: rgba(0, 0, 0, 0.14);
    margin-top: 50px;
    padding: 20px 50px;
    border-radius: 16px;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    border: 1px solid rgba(0, 0, 0, 0.68);
}

body .details .item .item-title {
    color: #ccc;
}

body .details .item .item-text {
    margin-top: 12px;
    font-size: 1.5rem;
}

body article {
    margin-top: 50px;
    margin-bottom: 50px;
    padding-bottom: 20px;
    line-height: 1.70;
}

body article h4 {
    margin-top: 50px;
    margin-bottom: 20px;
    font-size: 1.25rem;
}

body article p {
    margin-bottom: 20px;
    color: #ffffff;
    font-size: 1.1rem;
}

body article blockquote {
    margin: 40px 0;
    background-color: #181818;
    padding: 30px;
    border-radius: 16px;
}

@media screen and (max-width: 768px) {

    body .container header {
        padding: 10px 20px 30px;
        min-height: 300px;
    }

    body .container header .category {
        font-size: 0.9rem;
    }

    body .container header .info .title {
        font-size: 2.2rem;
    }

    body .container header .info .subtitle {
        font-size: 0.8rem;
    }

    body .container .details {
        flex-direction: column;
    }

    body .container .details .item:not(:last-child) {
        margin-bottom: 30px;
    }

}

body article .markdown-body {
    background-color: #282828;
    color: #ffffff;
    padding: 20px;
    border-radius: 8px;
    line-height: 1.6;
    margin-bottom: 30px;
}

body article .markdown-body h1,
body article .markdown-body h2,
body article .markdown-body h3 {
    color: #f0f0f0;
}

body article .markdown-body a {
    color: #1e90ff;
    text-decoration: none;
}

body article .markdown-body a:hover {
    text-decoration: underline;
}

body article .markdown-body pre {
    background-color: #1e1e1e;
    padding: 10px;
    border-radius: 4px;
    overflow-x: auto;
}

body article .markdown-body code {
    background-color: #333;
    color: #f8f8f2;
    padding: 2px 4px;
    border-radius: 4px;
}

.references-list {
    margin-top: 20px;
    padding: 20px 15px;
    background-color: #282828;
    border-radius: 8px;
    color: #ffffff;
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
    width: 95%;
}

.references-header {
    color: #f0f0f0;
    margin-bottom: 20px;
    font-size: 1.5rem;
    border-bottom: 2px solid #007bff;
    padding-bottom: 12px;
    margin-top: 10px;
}

.reference-item {
    margin-bottom: 12px;
    padding: 12px 15px;
    border-left: 3px solid #007bff;
    background-color: rgba(0, 0, 0, 0.2);
    border-radius: 4px;
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.reference-header h3 {
    font-size: 1rem;
    margin: 0;
    line-height: 1.4;
    color: #e0e0e0;
    word-wrap: break-word;
}

.reference-content p {
    font-size: 0.9rem;
    margin: 0;
    color: #b0b0b0;
    line-height: 1.4;
    word-wrap: break-word;
}

.reference-item a {
    color: #1e90ff;
    text-decoration: none;
    transition: color 0.2s ease;
}

.reference-item a:hover {
    color: #00f0f8;
    text-decoration: underline;
}

@media screen and (max-width: 1200px) {
    .references-list {
        width: 90%;
    }
}

@media screen and (max-width: 768px) {
    .references-list {
        width: 95%;
        padding: 10px;
        margin-top: 15px;
    }
}