/* Styling untuk Body dan Umum */
body {
    font-family: 'Arial', sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
}

.container {
    width: 80%;
    margin: 0 auto;
}

/* Header */
header {
    background-color: #4c4f69;
    padding: 20px 0;
    text-align: center;
    color: white;
}
header h1 {
    margin: 0;
    font-size: 32px;
}

/* Navigation Menu */
nav {
    background-color: #343a40;
    padding: 10px;
}
nav ul {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
}
nav li {
    margin: 0 20px;
}
nav a {
    color: white;
    text-decoration: none;
    font-size: 16px;
}
nav a:hover {
    text-decoration: underline;
}

/* Artikel */
.article {
    width: 100%;
    padding: 20px;
    background-color: white;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    border-radius: 8px;
    margin-top: 20px;
}
.article h2 {
    font-size: 24px;
    color: #333;
    margin-bottom: 10px;
}
.article .doi {
    font-size: 14px;
    color: #007bff;
    margin-top: 10px;
}
.article .authors {
    font-size: 14px;
    color: #666;
    margin-top: 10px;
}
.article .pdf {
    display: inline-block;
    background-color: #007bff;
    color: white;
    padding: 10px;
    text-decoration: none;
    margin-top: 15px;
    border-radius: 5px;
}
.article .pdf:hover {
    background-color: #0056b3;
}
.article .abstract-view {
    font-size: 14px;
    color: #666;
    margin-top: 10px;
}

/* Sidebar */
.sidebar {
    background-color: #f9f9f9;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
}
.sidebar h3 {
    font-size: 18px;
    margin-bottom: 15px;
}
.sidebar ul {
    list-style: none;
    margin: 0;
    padding: 0;
}
.sidebar li {
    margin-bottom: 10px;
}
.sidebar a {
    color: #4c4f69;
    text-decoration: none;
}
.sidebar a:hover {
    color: #007bff;
}

/* Footer */
footer {
    background-color: #343a40;
    color: white;
    text-align: center;
    padding: 10px;
    margin-top: 30px;
}
footer p {
    margin: 0;
    font-size: 14px;
}

/* Responsif untuk Mobile */
@media screen and (max-width: 768px) {
    .article {
        width: 100%;
        margin-bottom: 20px;
    }
    .sidebar {
        width: 100%;
        margin-top: 20px;
    }
    nav ul {
        flex-direction: column;
    }
    nav li {
        margin: 10px 0;
    }
}