/* ===== GLOBAL ===== */
body {
  font-family: Arial, sans-serif;
  margin: 0;
  background-color: #fff;
  line-height: 1.6;
}

/* ===== HEADER ===== */
header {
  background-color: #848484;
  color: white;
  text-align: center;
  padding: 15px 0;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 40px;
}

.header-logo {
  width: 100px;
}

nav ul {
  list-style: none;
  background-color: #ff7700;
  padding: 10px;
  margin: 0;
  display: flex;
  justify-content: center;
}

nav ul li {
  margin: 0 20px;
}

nav ul li a {
  color: white;
  text-decoration: none;
  font-weight: bold;
  transition: 0.3s;
}

nav ul li a:hover,
nav ul li a.active {
  color: yellow;
}

/* ===== MAIN LAYOUT ===== */
main {
  display: flex;
  padding: 30px;
  background-color: #fff;
  gap: 30px;
}

.content {
  flex: 3;
  padding-right: 20px;
}

.content h2 {
  color: #222;
  border-bottom: 3px solid #ff7700;
  padding-bottom: 5px;
  margin-bottom: 15px;
}

.content p {
  text-align: justify;
  margin: 10px 0;
}

.content ul {
  margin-left: 25px;
  padding-left: 10px;
}

.content ul li {
  margin-bottom: 8px;
}

.content a {
  color: #ff7700;
  text-decoration: none;
  font-weight: bold;
}

.content a:hover {
  text-decoration: underline;
}

/* ===== SIDEBAR ===== */
.sidebar {
  flex: 0 0 260px; /* sidebar fix 260px */
  max-width: 260px;
  background-color: #f4f4f4;
  padding: 15px 20px; /* atas-bawah 15px, kanan-kiri 20px */
  border-left: 3px solid #848484;
  border-radius: 4px;
  box-sizing: border-box;
}

.sidebar h3 {
  background-color: #ff7700;
  color: white;
  text-align: center;
  padding: 10px;
  border-radius: 3px;
}

.sidebar ul {
  list-style: none;
  padding: 0;
  margin: 10px 0;
}

.sidebar ul li {
  background-color: #848484;
  margin: 5px 0;
  text-align: center;
  border-radius: 3px;
  transition: 0.3s;
}

.sidebar ul li a {
  color: white;
  text-decoration: none;
  display: block;
  padding: 8px;
}

.sidebar ul li a:hover,
.sidebar ul li a.active {
  background-color: #ff7700;
}

/* ===== FOOTER ===== */
footer {
  background-color: #eee;
  text-align: center;
  padding: 20px;
  font-size: 14px;
  border-top: 2px solid #ccc;
}

.footer-logos img {
  height: 40px;
  margin: 10px;
  vertical-align: middle;
}

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  main {
    flex-direction: column;
  }

  .header-container {
    flex-direction: column;
    text-align: center;
  }

  nav ul {
    flex-wrap: wrap;
  }

  .sidebar {
    margin-top: 20px;
  }
}

/* ===== ARCHIVE (SINGLE SECTION) ===== */
.issue {
  margin: 20px 0 40px;
}

.issue h2 {
  color: #222;
  border-bottom: 3px solid #ff7700;
  padding-bottom: 5px;
  margin-bottom: 8px;
}

.pub-date {
  font-size: 14px;
  color: #666;
  margin-bottom: 18px;
}

.article {
  border: 1px solid #ddd;
  border-left: 5px solid #ff7700;
  padding: 15px;
  margin-bottom: 15px;
  background: #fafafa;
  transition: background 0.3s;
}

.article:hover {
  background: #f1f1f1;
}

.article h3 {
  margin: 0 0 6px;
  font-size: 18px;
  color: #222;
}

.authors,
.pages {
  font-size: 14px;
  color: #555;
  margin: 3px 0;
}

.pdf-link {
  display: inline-block;
  margin-top: 8px;
  padding: 6px 12px;
  background: #ff7700;
  color: #fff;
  text-decoration: none;
  border-radius: 3px;
  font-size: 14px;
  transition: 0.3s;
}

.pdf-link:hover {
  background: #cc5f00;
}

/* Responsive tweak */
@media (max-width: 768px) {
  .article {
    padding: 12px;
  }
  .article h3 {
    font-size: 16px;
  }
}