/**
 * Nexus Metro Theme v4.3 - Standalone Stylesheet
 * Loads via OJS public/journals/N/styleSheet.css
 * Reference: template/index.html (Bootstrap5 + FA6 + Inter)
 */

/* ── External imports ─────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Plus+Jakarta+Sans:wght@600;700;800&display=swap');
@import url('https://cdn.jsdelivr.net/npm/bootstrap@5.3.3/dist/css/bootstrap.min.css');
@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.5.2/css/all.min.css');
@import url('https://unpkg.com/leaflet@1.9.4/dist/leaflet.css');

/* ── CSS Variables ────────────────────────────────────────── */
:root {
  --primary-navy:   #071933;
  --secondary-navy: #092347;
  --accent-blue:    #0077b6;
  --accent-green:   #16a34a;
  --accent-orange:  #ea580c;
  --accent-purple:  #7e22ce;
  --accent-red:     #dc2626;
  --bg-light:       #f0f3f8;
  --white:          #ffffff;
  --border-color:   #e2e8f0;
  --text-main:      #1e293b;
  --text-muted-clr: #64748b;
  --fn-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --fn-head: 'Plus Jakarta Sans', 'Inter', sans-serif;
}

/* ── Base ─────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box !important; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--fn-body) !important;
  font-size: 14px !important;
  line-height: 1.6 !important;
  color: var(--text-main) !important;
  background-color: var(--bg-light) !important;
  overflow-x: hidden !important;
  margin: 0 !important;
  padding: 0 !important;
}
h1,h2,h3,h4,h5,h6 { font-family: var(--fn-head) !important; }
a { color: var(--accent-blue); text-decoration: none; transition: color .15s; }
a:hover { color: var(--primary-navy); text-decoration: none; }
img { max-width: 100%; height: auto; }

/* ── TOP BAR ──────────────────────────────────────────────── */
.nm-topbar {
  background-color: #1e293b !important;
  color: rgba(255,255,255,.75);
  padding: 5px 1.5rem;
  font-size: 12px;
  border-bottom: 1px solid rgba(255,255,255,.08);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 6px;
}
.nm-topbar a { color: rgba(255,255,255,.8) !important; text-decoration: none; }
.nm-topbar a:hover { color: #fff !important; }

/* ── HEADER ───────────────────────────────────────────────── */
/* OJS default theme header */
.pkp_structure_head,
#headerNavigationContainer {
  background: var(--white) !important;
  border-bottom: 1px solid var(--border-color) !important;
  box-shadow: 0 2px 8px rgba(0,0,0,.07) !important;
  padding: 0 !important;
  position: sticky !important;
  top: 0 !important;
  z-index: 1030 !important;
}

/* Header inner */
.pkp_head_wrapper,
.pkp_site_name_wrapper {
  max-width: 1320px;
  margin: 0 auto;
  padding: 8px 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: 60px;
  background: var(--white) !important;
}

.pkp_site_name a,
.pkp_site_name_wrapper a { text-decoration: none; display: flex; align-items: center; gap: 10px; }
.pkp_site_name a img { max-height: 50px !important; width: auto !important; }
.pkp_site_name .is_text__name,
.pkp_site_name_wrapper .title {
  font-family: var(--fn-head) !important;
  font-size: 1.1rem !important;
  font-weight: 800 !important;
  color: var(--primary-navy) !important;
  line-height: 1.2;
}

/* ── NAVIGATION ───────────────────────────────────────────── */
.pkp_navigation_primary_row,
.navbar,
nav[role="navigation"] {
  background: var(--primary-navy) !important;
  border: none !important;
  margin: 0 !important;
}

/* OJS default nav items */
.pkp_navigation_primary > li > a,
.pkp_navigation_primary_wrapper .pkp_nav_list > li > a,
nav[role="navigation"] ul li a {
  color: rgba(255,255,255,.88) !important;
  font-size: 12.5px !important;
  font-weight: 600 !important;
  padding: 10px 14px !important;
  display: flex !important;
  align-items: center !important;
  gap: 5px !important;
  transition: background .15s !important;
  text-decoration: none !important;
  white-space: nowrap;
}
.pkp_navigation_primary > li > a:hover,
nav[role="navigation"] ul li a:hover { background: rgba(255,255,255,.12) !important; color: #fff !important; }

/* ── HERO SECTION ─────────────────────────────────────────── */
.nm-hero {
  background: linear-gradient(135deg, #06152b 0%, #092244 50%, #0c2f5d 100%) !important;
  color: #fff;
  padding: 40px 1.5rem 0;
  position: relative;
  overflow: hidden;
  width: 100%;
}
.nm-hero-inner { max-width: 1320px; margin: 0 auto; position: relative; z-index: 2; }
.nm-hero-badges { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.nm-hero-title {
  font-family: var(--fn-head) !important;
  font-size: 1.85rem !important;
  font-weight: 800 !important;
  line-height: 1.2;
  margin-bottom: 10px;
  color: #fff !important;
}
.nm-hero-desc { font-size: 14.5px; color: rgba(255,255,255,.82); line-height: 1.65; margin-bottom: 20px; max-width: 600px; }
.nm-hero-btns { display: flex; flex-wrap: wrap; gap: 8px; padding-bottom: 32px; }
.nm-hero-btns .btn { font-weight: 700; font-size: 13px; border-radius: 4px; }

/* 4-box grid */
.nm-hero-boxes {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}
.nm-hero-box {
  padding: 14px;
  border-radius: 6px;
  color: #fff !important;
  text-decoration: none !important;
  transition: opacity .15s, transform .1s;
  display: block;
}
.nm-hero-box:hover { opacity: .88; transform: translateY(-2px); }
.nm-hero-box--blue   { background-color: var(--accent-blue) !important; }
.nm-hero-box--green  { background-color: var(--accent-green) !important; }
.nm-hero-box--orange { background-color: var(--accent-orange) !important; }
.nm-hero-box--purple { background-color: var(--accent-purple) !important; }
.nm-hero-box i { font-size: 1.6rem; margin-bottom: 6px; display: block; }
.nm-hero-box h6 { font-size: 11px; font-weight: 700; text-transform: uppercase; margin-bottom: 2px; color: #fff; }
.nm-hero-box small { font-size: 10.5px; color: rgba(255,255,255,.7); }

/* EKG */
@keyframes ekgRun { 0%{transform:translateX(0)} 100%{transform:translateX(-50%)} }
.nm-ekg-wrap { position:absolute; bottom:0; left:0; right:0; height:25px; overflow:hidden; opacity:.55; pointer-events:none; }
.nm-ekg-svg { width:200%; height:100%; animation:ekgRun 15s linear infinite; }

/* ── STAT CARDS ───────────────────────────────────────────── */
.nm-stats-section { padding: 20px 1.5rem 4px; background: var(--bg-light); }
.nm-stats-inner { max-width: 1320px; margin: 0 auto; }
.nm-line-card {
  background: var(--white);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  transition: transform .2s, box-shadow .2s;
  height: 100%;
  display: flex; flex-direction: column; justify-content: space-between;
}
.nm-line-card:hover { transform: translateY(-3px); box-shadow: 0 10px 20px rgba(0,0,0,.08); }
.nm-line-card--blue   { border-top: 4px solid var(--accent-blue) !important; }
.nm-line-card--green  { border-top: 4px solid var(--accent-green) !important; }
.nm-line-card--red    { border-top: 4px solid var(--accent-red) !important; }
.nm-line-card--purple { border-top: 4px solid var(--accent-purple) !important; }
.nm-line-card__body { padding: 14px 16px; }
.nm-line-card__label { font-size: 10.5px; font-weight: 700; text-transform: uppercase; color: var(--text-muted-clr); letter-spacing: .05em; display: block; margin-bottom: 2px; }
.nm-line-card__number { font-family: var(--fn-head) !important; font-size: 1.8rem; font-weight: 800; line-height: 1; margin-bottom: 2px; }
.nm-line-card__number--blue   { color: var(--accent-blue) !important; }
.nm-line-card__number--green  { color: var(--accent-green) !important; }
.nm-line-card__number--red    { color: var(--accent-red) !important; }
.nm-line-card__number--purple { color: var(--accent-purple) !important; }
.nm-line-card__desc { font-size: 11.5px; color: var(--text-muted-clr); }
.nm-line-card__footer {
  padding: 8px 16px;
  border-top: 1px solid var(--border-color);
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  display: flex; justify-content: space-between; align-items: center;
  text-decoration: none !important;
}

/* ── PAGE LAYOUT ──────────────────────────────────────────── */
.pkp_structure_page { background: var(--bg-light); }
.pkp_structure_main { width: 74% !important; float: left !important; padding-right: 16px !important; }
.pkp_structure_sidebar { width: 25% !important; float: right !important; }
.pkp_structure_content { max-width: 1320px; margin: 0 auto; padding: 16px 1.5rem; }
.pkp_structure_content::after { content: ''; display: table; clear: both; }

@media (max-width: 991px) {
  .pkp_structure_main  { width: 62% !important; }
  .pkp_structure_sidebar { width: 37% !important; }
}
@media (max-width: 767px) {
  .pkp_structure_main, .pkp_structure_sidebar { width: 100% !important; float: none !important; padding: 0 !important; }
  .pkp_structure_sidebar { margin-top: 16px; }
  .pkp_structure_content { padding: 12px; }
}

/* ── CURRENT ISSUE CARD ───────────────────────────────────── */
.nm-current-issue, .page_index_journal > .nm-current-issue {
  background: var(--white);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  margin-bottom: 20px;
  box-shadow: 0 1px 4px rgba(0,0,0,.06);
  overflow: hidden;
}
.nm-current-issue__body { padding: 20px; }
.nm-issue-cover-box {
  border: 1px solid var(--border-color);
  border-top: 4px solid var(--accent-blue);
  border-radius: 4px;
  padding: 14px;
  background: var(--white);
  text-align: center;
  box-shadow: 0 2px 6px rgba(0,0,0,.06);
}
.nm-current-issue__title {
  font-family: var(--fn-head) !important;
  font-size: 1.1rem; font-weight: 800; color: var(--primary-navy); margin-bottom: 6px;
}
.nm-current-issue__desc { font-size: 12.5px; color: var(--text-muted-clr); line-height: 1.7; text-align: justify; }

/* ── ARTICLES HEADING ─────────────────────────────────────── */
.nm-articles-heading {
  display: flex; justify-content: space-between; align-items: center;
  padding-bottom: 10px; margin-bottom: 16px; border-bottom: 2px solid var(--accent-blue);
}
.nm-articles-heading h4 {
  font-family: var(--fn-head) !important;
  font-size: 14px !important; font-weight: 800 !important;
  text-transform: uppercase; color: var(--primary-navy) !important; margin: 0 !important;
}

/* ── ARTICLE CARDS ────────────────────────────────────────── */
.obj_article_summary {
  background: var(--white) !important;
  border: 1px solid var(--border-color) !important;
  border-radius: 8px !important;
  margin-bottom: 12px !important;
  box-shadow: 0 1px 4px rgba(0,0,0,.06) !important;
  padding: 12px 14px !important;
  transition: box-shadow .2s !important;
}
.obj_article_summary:hover { box-shadow: 0 6px 16px rgba(0,0,0,.1) !important; }
.obj_article_summary .title { font-size: 13.5px !important; font-weight: 700 !important; line-height: 1.4 !important; margin-bottom: 4px !important; }
.obj_article_summary .title a { color: var(--primary-navy) !important; }
.obj_article_summary .title a:hover { color: var(--accent-blue) !important; }
.obj_article_summary .authors { font-size: 12px !important; color: var(--text-muted-clr) !important; font-style: italic !important; margin-bottom: 6px !important; }

/* Galley buttons */
.obj_article_summary .galleys_links { list-style: none !important; padding: 0 !important; margin: 6px 0 0 !important; display: flex !important; flex-wrap: wrap !important; gap: 5px !important; }
.obj_article_summary .galleys_links li { display: inline-block !important; }
.obj_galley_link, a.obj_galley_link {
  font-size: 10.5px !important; font-weight: 700 !important; padding: 3px 10px !important;
  text-transform: uppercase !important; letter-spacing: .04em !important;
  color: #fff !important; border: none !important; border-radius: 4px !important;
  display: inline-flex !important; align-items: center !important; gap: 4px !important;
  transition: opacity .15s !important; text-decoration: none !important;
}
.obj_galley_link.pdf   { background: var(--accent-red) !important; }
.obj_galley_link:not(.pdf) { background: var(--accent-blue) !important; }
.obj_galley_link:hover { opacity: .85 !important; color: #fff !important; }

/* Section heading in TOC */
.obj_issue_toc .sections .section > h3,
.obj_issue_toc .sections .section > h4 {
  font-size: 11px !important; font-weight: 700 !important; text-transform: uppercase !important;
  color: var(--accent-blue) !important; background: #eff6ff !important;
  border-left: 3px solid var(--accent-blue) !important;
  padding: 6px 12px !important; margin: 12px 0 0 !important; border-radius: 0 4px 4px 0 !important;
}
.cmp_article_list.articles { list-style: none !important; padding: 0 !important; margin: 0 !important; }

/* ── ANALYTICS CARDS ──────────────────────────────────────── */
.nm-analytics-card {
  background: var(--white); border: 1px solid var(--border-color);
  border-radius: 8px; box-shadow: 0 1px 4px rgba(0,0,0,.06); margin-bottom: 20px; overflow: hidden;
}
.nm-analytics-card__header { padding: 16px 20px 10px; border-bottom: 1px solid var(--border-color); }
.nm-analytics-card__header h5 {
  font-family: var(--fn-head) !important; font-size: 13.5px !important;
  font-weight: 800 !important; text-transform: uppercase; color: var(--primary-navy) !important; margin: 0 0 2px !important;
}
.nm-analytics-card__body { padding: 16px 20px; }
#nm-metrics-chart { height: 240px; }
#nm-geo-map { height: 320px; border-radius: 6px; border: 1px solid var(--border-color); }

/* ── SIDEBAR ──────────────────────────────────────────────── */
.pkp_block {
  background: var(--white) !important; border: 1px solid var(--border-color) !important;
  border-radius: 6px !important; margin-bottom: 12px !important;
  box-shadow: 0 1px 4px rgba(0,0,0,.06) !important; overflow: hidden !important;
}
.pkp_block .title,
.pkp_block h2.title {
  background-color: #0c2340 !important; color: #fff !important;
  font-size: 11.5px !important; font-weight: 700 !important; letter-spacing: .5px !important;
  padding: 8px 14px !important; text-transform: uppercase !important; margin: 0 !important; border: none !important;
}
.pkp_block .content { padding: 8px 10px !important; }
.pkp_block .content ul { list-style: none !important; padding: 0 !important; margin: 0 !important; }
.pkp_block .content ul li a {
  display: flex !important; align-items: center !important; gap: 6px !important;
  padding: 6px 8px !important; font-size: 12px !important; color: var(--text-main) !important;
  border-bottom: 1px solid var(--border-color) !important; transition: background .1s, padding-left .1s !important;
}
.pkp_block .content ul li:last-child a { border-bottom: none !important; }
.pkp_block .content ul li a:hover { background: #eff6ff !important; color: var(--accent-blue) !important; padding-left: 12px !important; }

/* menu colored links */
.menu__group { display: flex !important; flex-direction: column !important; gap: 3px !important; }
.menu__link {
  display: block !important; padding: 6px 10px !important; font-size: 11px !important;
  font-weight: 600 !important; color: #fff !important; text-decoration: none !important;
  border-radius: 3px !important; transition: opacity .12s !important;
}
.menu__link:hover { opacity: .85 !important; color: #fff !important; }
.menu__link:nth-child(1)  { background: #0067B8 !important; }
.menu__link:nth-child(2)  { background: #107C10 !important; }
.menu__link:nth-child(3)  { background: #0877D1 !important; }
.menu__link:nth-child(4)  { background: var(--accent-red) !important; }
.menu__link:nth-child(5)  { background: var(--accent-orange) !important; }
.menu__link:nth-child(6)  { background: #107C10 !important; }
.menu__link:nth-child(7)  { background: #0067B8 !important; }
.menu__link:nth-child(8)  { background: #00796B !important; }
.menu__link:nth-child(9)  { background: var(--accent-purple) !important; }
.menu__link:nth-child(10) { background: var(--accent-orange) !important; }
.menu__link:nth-child(11) { background: #0067B8 !important; }
.menu__link:nth-child(12) { background: var(--accent-red) !important; }
.menu__link:nth-child(13) { background: #37474F !important; }
.menu__link:nth-child(14) { background: #00796B !important; }

/* ── FOOTER ───────────────────────────────────────────────── */
.pkp_structure_footer {
  background: #1e293b !important; color: rgba(255,255,255,.65) !important;
  padding: 32px 0 0 !important; margin-top: 0 !important; border-top: none !important;
  font-size: 13px !important; clear: both !important;
}
.nm-footer-inner { max-width: 1320px; margin: 0 auto; padding: 0 1.5rem; }
.nm-footer-col h5 { font-family: var(--fn-head) !important; font-size: 14px !important; font-weight: 800 !important; color: #fff !important; margin-bottom: 12px !important; }
.nm-footer-col h6 { font-size: 11.5px !important; font-weight: 700 !important; text-transform: uppercase !important; letter-spacing: .06em !important; color: #fff !important; margin-bottom: 14px !important; }
.nm-footer-col p { font-size: 12.5px; color: rgba(255,255,255,.55); margin-bottom: 5px; }
.nm-footer-col a { color: rgba(255,255,255,.6) !important; }
.nm-footer-col a:hover { color: #fff !important; }
.nm-footer-bottom { max-width: 1320px; margin: 24px auto 0; padding: 12px 1.5rem; border-top: 1px solid rgba(255,255,255,.08); text-align: center; }
.nm-footer-bottom p { margin: 0; font-size: 12px; color: rgba(255,255,255,.4); }
.pkp_site_footer { color: rgba(255,255,255,.4) !important; font-size: 11.5px !important; text-align: center; padding: 8px 0; }

/* ── HOMEPAGE OJS ─────────────────────────────────────────── */
.homepage_image { display: none !important; }
.page_index_journal { padding: 0 !important; margin: 0 !important; background: transparent !important; border: none !important; box-shadow: none !important; }

/* ── BUTTONS ──────────────────────────────────────────────── */
.btn-primary { background-color: var(--accent-blue) !important; border-color: var(--accent-blue) !important; }
.btn-primary:hover { background-color: var(--primary-navy) !important; border-color: var(--primary-navy) !important; }

/* ── BACK TO TOP ──────────────────────────────────────────── */
.nm-back-top {
  position: fixed; bottom: 20px; right: 20px; width: 36px; height: 36px;
  background: var(--accent-blue); color: #fff; border: none; border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; z-index: 999; opacity: 0; pointer-events: none;
  transition: opacity .25s, background .15s; font-size: 14px;
  box-shadow: 0 4px 12px rgba(0,0,0,.2);
}
.nm-back-top.is-visible { opacity: 1; pointer-events: auto; }
.nm-back-top:hover { background: var(--primary-navy); }

/* ── ARTICLE DETAIL ───────────────────────────────────────── */
.obj_article_details {
  background: var(--white); border: 1px solid var(--border-color); border-top: 4px solid var(--accent-blue);
  border-radius: 6px; padding: 24px; box-shadow: 0 1px 4px rgba(0,0,0,.06);
}
.obj_article_details .page_title { font-family: var(--fn-head) !important; font-size: 1.2rem !important; font-weight: 800 !important; color: var(--primary-navy) !important; border-bottom: 2px solid var(--border-color) !important; padding-bottom: 14px !important; margin-bottom: 16px !important; line-height: 1.35 !important; }
.obj_article_details .abstract { background: #eff6ff; border-left: 4px solid var(--accent-blue); padding: 14px 16px; font-size: 13px; line-height: 1.75; margin: 16px 0; text-align: justify; border-radius: 0 4px 4px 0; }

/* ── BREADCRUMBS ──────────────────────────────────────────── */
.cmp_breadcrumbs { background: var(--white) !important; border-bottom: 1px solid var(--border-color) !important; padding: 7px 1.5rem !important; font-size: 12px !important; margin-bottom: 0 !important; }
.cmp_breadcrumbs a { color: var(--accent-blue) !important; }

/* ── RESPONSIVE ───────────────────────────────────────────── */
@media (max-width: 767px) {
  .nm-hero { padding: 24px 1rem 0; }
  .nm-hero-title { font-size: 1.35rem !important; }
  .nm-hero-boxes { grid-template-columns: 1fr 1fr; gap: 6px; }
  .nm-line-card__number { font-size: 1.4rem; }
  .nm-footer-inner > .row { display: block !important; }
  .nm-footer-inner > .row > div { margin-bottom: 20px; }
}