/* -----------------------------
   Global Layout & Typography
------------------------------ */
body {
    font-family: "Inter", "Roboto", "Helvetica Neue", Arial, sans-serif;
    font-size: 18px;
    line-height: 1.7;
    color: #1a1a1a;
    background: #f7f8fa;
    margin: 0;
    padding: 0;
}

/* Container */
.container {
    max-width: 900px;
    margin: 40px auto;
    background: #ffffff;
    padding: 40px;
    border-radius: 12px;
    box-shadow: 0px 4px 20px rgba(0,0,0,0.05);
}

/* -----------------------------
   Headings
------------------------------ */
h1, h2, h3, h4, h5, h6 {
    font-family: "Merriweather", Georgia, serif;
    font-weight: 700;
    color: #0f171f;
    margin-top: 40px;
}

h1 {
    font-size: 2.4rem;
    text-align: center;
    margin-bottom: 20px;
}

h2 {
    font-size: 1.8rem;
    border-left: 4px solid #0057b8;
    padding-left: 12px;
    margin-bottom: 12px;
}

h3 {
    font-size: 1.4rem;
    margin-bottom: 8px;
}

/* -----------------------------
   Article Metadata
------------------------------ */

.article-meta {
    font-size: 0.95rem;
    text-align: center;
    color: #555;
    margin-bottom: 35px;
}

.article-meta span {
    display: block;
    margin: 5px 0;
}

/* -----------------------------
   Links
------------------------------ */

a {
    color: #0057b8;
    text-decoration: none;
}

a:hover {
    text-decoration: underline;
}

/* -----------------------------
   Abstract Box
------------------------------ */

.abstract-box {
    background: #f2f6ff;
    border-left: 4px solid #0057b8;
    padding: 20px;
    margin: 30px 0;
    border-radius: 6px;
}

.abstract-title {
    font-weight: 700;
    margin-bottom: 10px;
    text-transform: uppercase;
}

/* -----------------------------
   Figures & Tables
------------------------------ */

figure {
    text-align: center;
    margin: 30px 0;
}

figure img {
    max-width: 100%;
    border-radius: 6px;
}

figcaption {
    font-size: 0.9rem;
    color: #555;
    margin-top: 8px;
}

table {
    width: 100%;
    border-collapse: collapse;
    margin: 25px 0;
    font-size: 0.95rem;
}

table thead {
    background: #e9eef5;
}

table th, table td {
    border: 1px solid #d4d9dd;
    padding: 12px;
    text-align: left;
}

/* -----------------------------
   Blockquotes
------------------------------ */

blockquote {
    border-left: 4px solid #0057b8;
    padding: 15px 20px;
    margin: 30px 0;
    font-style: italic;
    color: #333;
    background: #f8f9fb;
}

/* -----------------------------
   References
------------------------------ */

.references {
    margin-top: 50px;
}

.references h2 {
    margin-bottom: 10px;
}

.references li {
    margin: 10px 0;
    line-height: 1.6;
}

/* -----------------------------
   Footer
------------------------------ */

.footer {
    margin-top: 60px;
    padding-top: 30px;
    border-top: 1px solid #ddd;
    font-size: 0.9rem;
    text-align: center;
    color: #777;
}