/**
 * JEME Official Institutional Theme Stylesheet
 * Journal of Energy Management and Economics
 * Basrah University for Oil and Gas
 * WCAG 2.1 AA Compliant - Visual Identity Standard 2026
 */

:root {
  --jeme-deep-oil-blue: #0A2239;
  --jeme-dark-emerald: #0D5C75;
  --jeme-light-emerald: #178582;
  --jeme-industrial-gray: #F4F6F8;
  --jeme-industrial-border: #E2E8F0;
  --jeme-amber-orange: #E06A3B;
  --jeme-dark-orange: #B04A22;
  --jeme-charcoal: #1E293B;
  --jeme-dark-footer: #061321;
  --jeme-white: #FFFFFF;
  --jeme-radius-sm: 4px;
  --jeme-radius-md: 8px;
  --jeme-radius-lg: 12px;
  --jeme-shadow-sm: 0 1px 3px rgba(10, 34, 57, 0.08);
  --jeme-shadow-md: 0 4px 12px rgba(10, 34, 57, 0.12);
  --jeme-transition: all 0.25s ease-in-out;
}

/* ==========================================================================
   1. Typography & Global Resets
   ========================================================================== */

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  color: var(--jeme-charcoal);
  background-color: #FAFAFA;
  line-height: 1.65;
  font-size: 15px;
}

/* Arabic Language Support (RTL) */
html[lang="ar"], body.rtl, [dir="rtl"] {
  font-family: 'IBM Plex Sans Arabic', 'Cairo', -apple-system, sans-serif;
  text-align: right;
  direction: rtl;
}

h1, h2, h3, h4, h5, h6,
.h1, .h2, .h3, .h4, .h5, .h6 {
  color: var(--jeme-deep-oil-blue);
  font-family: 'Inter', sans-serif;
  font-weight: 700;
  line-height: 1.3;
}

html[lang="ar"] h1, html[lang="ar"] h2, html[lang="ar"] h3,
html[lang="ar"] h4, html[lang="ar"] h5, html[lang="ar"] h6 {
  font-family: 'Cairo', 'IBM Plex Sans Arabic', sans-serif;
  font-weight: 700;
}

a {
  color: var(--jeme-dark-emerald);
  text-decoration: none;
  transition: var(--jeme-transition);
}

a:hover, a:focus {
  color: var(--jeme-dark-orange);
  text-decoration: underline;
}

/* Selection */
::selection {
  background: var(--jeme-dark-emerald);
  color: var(--jeme-white);
}

/* ==========================================================================
   2. Header & Navigation Bar
   ========================================================================== */

.pkp_structure_head,
.navbar-default,
header.pkp_nav_header,
.app__header {
  background-color: var(--jeme-deep-oil-blue) !important;
  border-bottom: 3px solid var(--jeme-dark-emerald);
  box-shadow: var(--jeme-shadow-md);
}

/* Top Institutional Ribbon */
.jeme-institutional-bar {
  background-color: #051422;
  color: #94A3B8;
  font-size: 12px;
  padding: 6px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.jeme-institutional-bar a {
  color: #CBD5E1;
  margin: 0 8px;
}

.jeme-institutional-bar a:hover {
  color: #FFFFFF;
}

/* Brand Name / Journal Title */
.navbar-brand,
.pkp_site_name,
.pkp_site_name a {
  color: #FFFFFF !important;
  font-size: 20px;
  font-weight: 700;
  letter-spacing: -0.2px;
}

html[lang="ar"] .navbar-brand,
html[lang="ar"] .pkp_site_name a {
  font-family: 'Cairo', sans-serif;
  font-size: 22px;
}

/* Navigation Links */
.navbar-default .navbar-nav > li > a,
.pkp_navigation_primary > li > a,
.pkp_nav_menu > li > a {
  color: #E2E8F0 !important;
  font-weight: 500;
  font-size: 14px;
  padding: 15px 16px;
  transition: var(--jeme-transition);
}

.navbar-default .navbar-nav > li > a:hover,
.navbar-default .navbar-nav > li > a:focus,
.navbar-default .navbar-nav > .active > a,
.pkp_navigation_primary > li > a:hover {
  color: #FFFFFF !important;
  background-color: rgba(13, 92, 117, 0.6) !important;
  border-bottom: 3px solid var(--jeme-amber-orange);
}

/* Dropdown Menus */
.dropdown-menu {
  background-color: var(--jeme-deep-oil-blue);
  border: 1px solid var(--jeme-dark-emerald);
  box-shadow: var(--jeme-shadow-md);
  border-radius: var(--jeme-radius-sm);
}

.dropdown-menu > li > a {
  color: #E2E8F0;
  padding: 10px 18px;
  font-size: 13.5px;
}

.dropdown-menu > li > a:hover,
.dropdown-menu > li > a:focus {
  background-color: var(--jeme-dark-emerald);
  color: #FFFFFF;
}

/* User & Language Navigation */
.pkp_navigation_user > li > a,
.navbar-right > li > a {
  color: #CBD5E1 !important;
  font-size: 13px;
}

/* ==========================================================================
   3. Buttons & Interactive Elements (WCAG Compliant)
   ========================================================================== */

/* Primary CTA Button (Amber Orange) */
.btn-primary,
.btn-submit,
a.btn-primary,
button.btn-primary {
  background-color: var(--jeme-amber-orange) !important;
  border-color: var(--jeme-amber-orange) !important;
  color: #FFFFFF !important;
  font-weight: 700;
  border-radius: var(--jeme-radius-sm);
  padding: 9px 20px;
  box-shadow: 0 2px 4px rgba(224, 106, 59, 0.25);
  transition: var(--jeme-transition);
}

.btn-primary:hover,
.btn-primary:focus,
a.btn-primary:hover {
  background-color: var(--jeme-dark-orange) !important;
  border-color: var(--jeme-dark-orange) !important;
  box-shadow: 0 4px 8px rgba(176, 74, 34, 0.35);
  transform: translateY(-1px);
}

/* Secondary Button (Emerald) */
.btn-secondary,
.btn-default,
a.btn-default {
  background-color: #FFFFFF !important;
  border: 1.5px solid var(--jeme-dark-emerald) !important;
  color: var(--jeme-dark-emerald) !important;
  font-weight: 600;
  border-radius: var(--jeme-radius-sm);
  padding: 8px 18px;
  transition: var(--jeme-transition);
}

.btn-secondary:hover,
.btn-default:hover,
a.btn-default:hover {
  background-color: var(--jeme-dark-emerald) !important;
  color: #FFFFFF !important;
}

/* Galley / Download PDF Button */
.obj_galley_link,
a.obj_galley_link,
.galley_link {
  background: linear-gradient(135deg, var(--jeme-dark-emerald) 0%, #083b4c 100%) !important;
  color: #FFFFFF !important;
  font-weight: 700;
  font-size: 13.5px;
  padding: 8px 18px;
  border-radius: var(--jeme-radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: none;
  box-shadow: var(--jeme-shadow-sm);
}

.obj_galley_link:hover {
  background: var(--jeme-dark-orange) !important;
  color: #FFFFFF !important;
  text-decoration: none;
  box-shadow: 0 3px 6px rgba(176, 74, 34, 0.3);
}

/* ==========================================================================
   4. Article Cards & Lists
   ========================================================================== */

.obj_article_summary,
.article-summary,
.c-card--article,
.panel-default {
  background-color: #FFFFFF;
  border: 1px solid var(--jeme-industrial-border) !important;
  border-radius: var(--jeme-radius-md);
  padding: 22px;
  margin-bottom: 22px;
  box-shadow: var(--jeme-shadow-sm);
  transition: var(--jeme-transition);
  position: relative;
}

.obj_article_summary:hover,
.article-summary:hover {
  border-color: var(--jeme-dark-emerald) !important;
  box-shadow: var(--jeme-shadow-md);
  transform: translateY(-2px);
}

/* Article Title */
.obj_article_summary .title,
.article-summary-title,
.article-summary .title a {
  color: var(--jeme-deep-oil-blue) !important;
  font-size: 18px;
  font-weight: 700;
  line-height: 1.4;
  margin-top: 6px;
  margin-bottom: 10px;
}

.obj_article_summary .title a:hover {
  color: var(--jeme-dark-orange) !important;
}

/* Authors */
.obj_article_summary .authors,
.article-summary-authors {
  color: #475569;
  font-size: 14px;
  margin-bottom: 10px;
  font-weight: 500;
}

/* Badges & Tags */
.badge,
.badge-secondary,
.jeme-badge {
  background-color: var(--jeme-industrial-gray);
  color: var(--jeme-dark-emerald);
  border: 1px solid var(--jeme-industrial-border);
  font-weight: 600;
  font-size: 12px;
  padding: 4px 10px;
  border-radius: 20px;
}

.badge-oa,
.badge-diamond {
  background-color: rgba(23, 133, 130, 0.12);
  color: var(--jeme-dark-emerald);
  border: 1px solid rgba(23, 133, 130, 0.3);
  font-weight: 700;
}

/* DOI text link */
.doi, .item.doi a {
  color: var(--jeme-dark-orange);
  font-family: 'Inter', monospace;
  font-size: 13px;
  font-weight: 600;
}

/* ==========================================================================
   5. Article Details Page (Single Article View)
   ========================================================================== */

.obj_article_details {
  background: #FFFFFF;
  border: 1px solid var(--jeme-industrial-border);
  border-radius: var(--jeme-radius-md);
  padding: 35px;
  margin-top: 20px;
  box-shadow: var(--jeme-shadow-sm);
}

.obj_article_details .page_title {
  color: var(--jeme-deep-oil-blue);
  font-size: 26px;
  font-weight: 800;
  line-height: 1.35;
  margin-bottom: 15px;
}

/* Metadata Box (Received, Accepted, Published) */
.jeme-metadata-box,
.article-details-block {
  background-color: var(--jeme-industrial-gray);
  border-radius: var(--jeme-radius-md);
  border-left: 4px solid var(--jeme-dark-emerald);
  padding: 18px 22px;
  margin: 25px 0;
}

html[lang="ar"] .jeme-metadata-box {
  border-left: none;
  border-right: 4px solid var(--jeme-dark-emerald);
}

.jeme-metadata-item {
  display: inline-block;
  margin-right: 25px;
  font-size: 13.5px;
  color: #334155;
}

html[lang="ar"] .jeme-metadata-item {
  margin-right: 0;
  margin-left: 25px;
}

.jeme-metadata-label {
  font-weight: 700;
  color: var(--jeme-deep-oil-blue);
}

/* Abstract Box */
.item.abstract {
  margin: 25px 0;
  padding: 20px 0;
  border-top: 1px solid var(--jeme-industrial-border);
  border-bottom: 1px solid var(--jeme-industrial-border);
}

.item.abstract h2 {
  font-size: 18px;
  color: var(--jeme-dark-emerald);
  margin-bottom: 12px;
}

.item.abstract p {
  color: var(--jeme-charcoal);
  font-size: 15.5px;
  line-height: 1.75;
  text-align: justify;
}

/* License & Copyright Block */
.item.copyright {
  background-color: rgba(23, 133, 130, 0.08);
  border: 1px dashed var(--jeme-light-emerald);
  border-radius: var(--jeme-radius-sm);
  padding: 14px 18px;
  margin-top: 25px;
  font-size: 13.5px;
  color: #1E293B;
}

/* ==========================================================================
   6. Sidebar Blocks
   ========================================================================== */

.pkp_structure_sidebar .pkp_block {
  background: #FFFFFF;
  border: 1px solid var(--jeme-industrial-border);
  border-radius: var(--jeme-radius-md);
  padding: 20px;
  margin-bottom: 25px;
  box-shadow: var(--jeme-shadow-sm);
}

.pkp_structure_sidebar .title {
  color: var(--jeme-deep-oil-blue);
  font-size: 16px;
  font-weight: 700;
  border-bottom: 2px solid var(--jeme-dark-emerald);
  padding-bottom: 8px;
  margin-bottom: 15px;
}

/* ==========================================================================
   7. Footer
   ========================================================================== */

.pkp_structure_footer,
footer {
  background-color: var(--jeme-dark-footer) !important;
  color: #94A3B8;
  padding: 45px 0 25px 0;
  margin-top: 60px;
  border-top: 4px solid var(--jeme-dark-emerald);
  font-size: 14px;
}

.pkp_structure_footer h4,
footer h4 {
  color: #F8FAFC;
  font-size: 16px;
  font-weight: 700;
  margin-bottom: 16px;
}

.pkp_structure_footer a,
footer a {
  color: #CBD5E1;
  text-decoration: none;
  transition: var(--jeme-transition);
}

.pkp_structure_footer a:hover,
footer a:hover {
  color: var(--jeme-amber-orange);
  text-decoration: underline;
}

.pkp_structure_footer hr,
footer hr {
  border-color: rgba(255, 255, 255, 0.1);
  margin: 25px 0 15px 0;
}

/* ==========================================================================
   8. Mobile Responsiveness
   ========================================================================== */

@media (max-width: 768px) {
  .navbar-brand {
    font-size: 17px !important;
  }
  .jeme-hero-banner {
    padding: 20px !important;
  }
  .obj_article_summary {
    padding: 16px;
  }
  .obj_article_details {
    padding: 20px;
  }
  .jeme-metadata-item {
    display: block;
    margin: 6px 0;
  }
}