/* ===== GLOBAL RESET & BOX MODEL ===== */

* {
    box-sizing: border-box;
}

/* ===== GENERAL BODY ===== */

body {
    font-family: "Segoe UI", Arial, sans-serif;
    margin: 0;
    background: linear-gradient(to right, #eef2f7, #f8fafc);
    color: #333;
    line-height: 1.75;
}

/* ===== HEADER ===== */

header {
    background: linear-gradient(135deg, #1e3c72, #2a5298);
    color: white;
    padding: 30px 20px;
    text-align: center;
    box-shadow: 0 3px 12px rgba(0,0,0,0.25);
}

header h1 {
    margin: 0;
    font-size: 32px;
    letter-spacing: 1px;
}

/* ===== NAVIGATION BAR ===== */

nav {
    margin-top: 18px;
}

nav a {
    color: #ffffff;
    text-decoration: none;
    margin: 0 14px;
    font-weight: 500;
    padding-bottom: 4px;
    transition: 0.3s ease;
}

nav a:hover {
    border-bottom: 2px solid #ffd166;
    color: #ffd166;
}

/* ===== ISSN STRIP ===== */

.issn-strip {
    background: linear-gradient(to right, #eef3fb, #ffffff);
    padding: 10px;
    text-align: center;
    font-size: 14px;
    border-bottom: 1px solid #d6dde8;
    color: #444;
}

/* ===== MAIN CONTENT ===== */

main {
    max-width: 1050px;
    width: 90%;
    margin: 45px auto;
    background: #ffffff;
    padding: 45px;
    border-radius: 12px;
    box-shadow: 0 8px 28px rgba(0,0,0,0.08);
}

/* ===== SECTIONS ===== */

section {
    margin-bottom: 40px;
}

/* ===== HEADINGS ===== */

h2 {
    color: #1e3c72;
    margin-top: 40px;
    padding: 10px 14px;
    border-left: 5px solid #2a5298;
    background: linear-gradient(to right, #eef3fb, transparent);
    border-radius: 4px;
}

h3 {
    color: #2a5298;
    margin-top: 28px;
}

/* ===== PARAGRAPHS ===== */

p {
    font-size: 16px;
    text-align: justify;
    hyphens: auto;
}

/* ===== LIST STYLING ===== */

ul {
    padding-left: 22px;
}

ul li {
    margin-bottom: 8px;
}

/* ===== CARD STYLE (Archives / Articles) ===== */

.card {
    border-left: 6px solid #2a5298;
    background: linear-gradient(to right, #f9fbff, #ffffff);
    padding: 16px 20px;
    margin: 20px 0;
    border-radius: 8px;
    transition: all 0.3s ease;
}

.card:hover {
    background: linear-gradient(to right, #eef3fb, #ffffff);
    transform: translateX(4px);
}

/* ===== BUTTON STYLE ===== */

.button {
    display: inline-block;
    background: linear-gradient(135deg, #2a5298, #1e3c72);
    color: white;
    padding: 10px 20px;
    text-decoration: none;
    border-radius: 6px;
    margin-top: 12px;
    transition: 0.3s ease;
    font-weight: 500;
}

.button:hover {
    background: linear-gradient(135deg, #1e3c72, #16315e);
}

/* ===== FOOTER ===== */

footer {
    text-align: center;
    background: linear-gradient(135deg, #1e3c72, #16315e);
    color: white;
    padding: 18px;
    font-size: 14px;
    margin-top: 50px;
}

/* ===== RESPONSIVE DESIGN ===== */

@media (max-width: 768px) {

    nav a {
        display: block;
        margin: 10px 0;
    }

    main {
        width: 95%;
        margin: 25px auto;
        padding: 25px;
    }

    h2 {
        font-size: 20px;
    }
}