/* Journal of Data Intelligence and AI Systems — editorial skin for OJS. */
:root {
  --jd-ink: #152a34;
  --jd-ink-soft: #455660;
  --jd-navy: #102b39;
  --jd-navy-deep: #0a202c;
  --jd-red: #ac2637;
  --jd-red-dark: #8a1727;
  --jd-paper: #f7f7f4;
  --jd-white: #fff;
  --jd-line: #dce2e3;
  --jd-serif: Georgia, "Times New Roman", serif;
  --jd-sans: "Noto Sans", "Open Sans", Arial, sans-serif;
}

html, body { background: var(--jd-paper); color: var(--jd-ink); }
body { font-family: var(--jd-sans); }
a { color: var(--jd-red-dark); }
a:hover, a:focus { color: var(--jd-red); }
a:focus-visible, button:focus-visible { outline: 3px solid #d28241; outline-offset: 3px; }
::selection { background: #ecd7da; color: var(--jd-ink); }

/* Masthead and navigation retain OJS menus and account controls. */
.pkp_structure_head {
  background: var(--jd-navy);
  border: 0;
  border-top: 5px solid var(--jd-red);
  box-shadow: 0 8px 20px rgba(10, 32, 44, .07);
}
.pkp_site_name_wrapper,
.pkp_navigation_primary_wrapper,
.pkp_navigation_user,
.pkp_structure_content,
.pkp_structure_footer { max-width: 1280px; }
.pkp_site_name .is_text,
.pkp_site_name .is_text:hover,
.pkp_site_name .is_text:focus {
  color: #fff;
  font-family: var(--jd-serif);
  font-weight: 700;
  letter-spacing: -.028em;
  text-decoration: none;
}
.pkp_site_nav_menu { background: var(--jd-navy); }
.pkp_site_nav_menu a { color: #fff; }
.pkp_site_nav_menu a:hover,
.pkp_site_nav_menu a:focus { color: #fff; }
.pkp_navigation_user_wrapper .pkp_navigation_user > li > a {
  color: #d7e1e5;
  font-size: 12px;
  letter-spacing: .065em;
  text-transform: uppercase;
}
.pkp_navigation_user_wrapper .pkp_navigation_user > li > a:hover { color: #fff; }
.pkp_navigation_primary ul,
.pkp_navigation_user ul { border-radius: 0; }

/* Shared page geometry and typography. */
.pkp_structure_content { background: transparent; }
.pkp_structure_main:before,
.pkp_structure_main:after { display: none; }
.pkp_structure_main h1,
.pkp_structure_main h2,
.pkp_structure_main h3 { color: var(--jd-ink); font-family: var(--jd-serif); letter-spacing: -.025em; }
.pkp_structure_main .page > h1 { font-size: clamp(2.2rem, 3.2vw, 3.25rem); line-height: 1.16; margin: 0 0 28px; }
.pkp_structure_main .page > h1:after { content: ""; display: block; width: 50px; height: 4px; margin-top: 24px; background: var(--jd-red); }
.pkp_structure_main .page { min-width: 0; }
.pkp_structure_main .page p { color: #32434c; }
.pkp_structure_main .page a:not(.obj_galley_link):not(.journal_button) { text-underline-offset: 3px; }
.cmp_breadcrumbs { margin-bottom: 27px; font-size: 12px; letter-spacing: .055em; text-transform: uppercase; }
.cmp_breadcrumbs a { color: #63737a; }
.cmp_breadcrumbs .current { color: var(--jd-red-dark); }
.pkp_structure_sidebar { color: var(--jd-ink-soft); }
.pkp_block { padding: 24px; border: 1px solid var(--jd-line); background: #fff; }
.pkp_block + .pkp_block { border-top: 0; }
.pkp_block .title { color: var(--jd-ink); font-family: var(--jd-serif); font-size: 20px; line-height: 1.3; text-transform: capitalize; }
.pkp_block .content p { font-size: 13px; line-height: 1.75; }
.pkp_block .content a { color: var(--jd-red-dark); }
.pkp_block .content a:hover { text-decoration: underline; }
.block_make_submission .content a,
.block_make_submission .content a:hover {
  display: block;
  padding: 13px 18px;
  border: 0;
  border-radius: 0;
  background: var(--jd-red);
  color: #fff;
  font-size: 13px;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  box-shadow: none;
}
.block_make_submission .content a:hover { background: var(--jd-red-dark); }
.block_web_feed img { max-height: 17px; filter: grayscale(1); opacity: .82; }

/* Homepage: journal introduction, issue feature, and selected articles. */
.pkp_page_index .pkp_structure_content { padding-top: 0; }
.pkp_page_index .pkp_structure_main { float: none; width: 100%; padding: 0 0 32px; }
.pkp_page_index .pkp_structure_sidebar {
  float: none;
  width: 100%;
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) repeat(3, minmax(0, 1fr));
  align-items: stretch;
  padding: 0 0 72px;
}
.pkp_page_index .pkp_block + .pkp_block { border-top: 1px solid var(--jd-line); border-left: 0; }
.journal_hero {
  display: grid;
  grid-template-columns: minmax(0, 1.42fr) minmax(290px, .58fr);
  min-height: 540px;
  background: #fff;
  border-bottom: 1px solid var(--jd-line);
}
.journal_hero_copy {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: 68px clamp(36px, 6vw, 86px);
  overflow: hidden;
}
.journal_hero_copy:before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 5px; background: var(--jd-red); }
.journal_eyebrow {
  margin: 0 0 22px;
  color: var(--jd-red-dark);
  font-family: var(--jd-sans);
  font-size: 11px;
  font-weight: 800;
  line-height: 1.6;
  letter-spacing: .145em;
  text-transform: uppercase;
}
.journal_eyebrow span { margin: 0 7px; color: #a5afb4; }
.pkp_structure_main .journal_hero h2 {
  max-width: 720px;
  margin: 0;
  color: var(--jd-ink);
  font-family: var(--jd-serif);
  font-size: clamp(2.9rem, 4.5vw, 5rem);
  font-weight: 700;
  line-height: 1.06;
  letter-spacing: -.052em;
}
.journal_hero_intro { max-width: 600px; margin: 26px 0 0; color: var(--jd-ink-soft); font-size: 17px; line-height: 1.72; }
.journal_hero_actions { display: flex; flex-wrap: wrap; align-items: center; gap: 13px 28px; margin-top: 33px; }
.journal_button { display: inline-flex; align-items: center; gap: 18px; min-height: 46px; font-size: 13px; font-weight: 750; text-decoration: none; }
.journal_button_primary { padding: 12px 20px; background: var(--jd-red); color: #fff; }
.journal_button_primary:hover, .journal_button_primary:focus { background: var(--jd-red-dark); color: #fff; text-decoration: none; }
.journal_button_text { color: var(--jd-ink); border-bottom: 1px solid var(--jd-ink); }
.journal_button_text:hover { color: var(--jd-red-dark); border-color: var(--jd-red-dark); text-decoration: none; }
.journal_hero_identifiers { display: flex; flex-wrap: wrap; gap: 8px 26px; margin-top: 54px; color: #64747b; font-size: 11px; letter-spacing: .04em; }
.journal_hero_identifiers strong { color: var(--jd-ink); font-weight: 700; }
.journal_hero_issue {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  padding: 44px 28px;
  background: #ecf0f1;
  border-left: 1px solid var(--jd-line);
  text-align: center;
}
.journal_hero_issue .journal_eyebrow { margin-bottom: 20px; }
.journal_issue_cover { display: block; width: min(215px, 76%); box-shadow: 0 16px 30px rgba(16,43,57,.16); transition: transform .2s ease, box-shadow .2s ease; }
.journal_issue_cover:hover { transform: translateY(-4px); box-shadow: 0 20px 32px rgba(16,43,57,.2); }
.journal_issue_cover img { display: block; width: 100%; height: auto; }
.journal_issue_caption { max-width: 270px; margin-top: 22px; text-align: center; }
.journal_issue_caption span { display: block; margin-bottom: 6px; color: #66767d; font-size: 11px; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; }
.journal_issue_caption strong { color: var(--jd-ink); font-family: var(--jd-serif); font-size: 17px; line-height: 1.32; }
.pkp_page_index .homepage_image { margin: 0; }
.pkp_page_index .homepage_about, .pkp_page_index .cmp_announcements { padding: 45px clamp(24px, 5vw, 72px); background: #fff; border-bottom: 1px solid var(--jd-line); }
.pkp_page_index .current_issue { padding: 66px clamp(24px, 5vw, 72px) 70px; background: #fff; }
.journal_section_heading { display: flex; justify-content: space-between; align-items: end; gap: 20px; padding-bottom: 23px; border-bottom: 2px solid var(--jd-ink); }
.journal_section_heading .journal_eyebrow { margin-bottom: 9px; }
.pkp_structure_main .journal_section_heading h2 { margin: 0; font-size: clamp(2.2rem, 3.3vw, 3.2rem); line-height: 1.15; }
.journal_section_heading > p { max-width: 320px; margin: 0 0 5px; color: #65757c; font-size: 12px; text-align: right; }
.journal_featured_articles { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 0 34px; margin: 0; padding: 0; list-style: none; }
.journal_featured_articles > li { min-width: 0; padding: 28px 0; border-bottom: 1px solid var(--jd-line); }
.journal_featured_articles .obj_article_summary > .title { font-size: 19px; line-height: 1.42; font-weight: 700; }
.journal_featured_articles .obj_article_summary > .title a { color: var(--jd-ink); }
.journal_featured_articles .obj_article_summary > .title a:hover { color: var(--jd-red-dark); }
.journal_featured_articles .obj_article_summary .meta { color: #66767d; font-size: 12px; line-height: 1.6; }
.journal_featured_articles .galleys_links { margin: 16px 0 0; }
.journal_featured_articles .obj_galley_link { padding: 5px 9px; border: 1px solid #cdd6d9; background: transparent; color: var(--jd-red-dark); font-size: 10px; font-weight: 800; letter-spacing: .07em; text-decoration: none; }
.journal_featured_articles .obj_galley_link:hover { border-color: var(--jd-red); background: var(--jd-red); color: #fff; }
.journal_all_articles { display: inline-flex; align-items: center; gap: 16px; margin-top: 30px; color: var(--jd-red-dark); font-size: 13px; font-weight: 800; text-decoration: none; }
.journal_all_articles:hover { text-decoration: underline; }
.journal_paths { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); border-top: 1px solid var(--jd-line); border-bottom: 1px solid var(--jd-line); background: #eef1f1; }
.journal_path { display: flex; flex-direction: column; min-height: 202px; padding: 34px; border-right: 1px solid #d5dedf; color: var(--jd-ink); text-decoration: none; }
.journal_path:last-child { border-right: 0; }
.journal_path:hover { background: #e6ecec; color: var(--jd-ink); text-decoration: none; }
.journal_path .journal_eyebrow { margin: 0 0 18px; }
.journal_path strong { font-family: var(--jd-serif); font-size: 23px; line-height: 1.2; letter-spacing: -.025em; }
.journal_path > span:last-child { margin-top: 15px; color: #56666e; font-size: 12px; line-height: 1.55; }
.pkp_page_index .additional_content { margin: 0; padding: 38px clamp(24px, 5vw, 72px); border-top: 0; background: #fff; }

/* Inner pages preserve full OJS content and workflows. */
.page_issue .obj_issue_toc > .heading { padding: 24px; border: 1px solid var(--jd-line); background: #fff; }
.page_issue .obj_issue_toc .cover img { box-shadow: 0 12px 25px rgba(16,43,57,.12); }
.page_issue .obj_issue_toc .sections { margin-top: 34px; }
.page_issue .obj_issue_toc .section > h2,
.page_issue .obj_issue_toc .section > h3 { padding-bottom: 14px; border-bottom: 2px solid var(--jd-ink); }
.page_issue .cmp_article_list > li { padding: 22px 0; border-bottom: 1px solid var(--jd-line); }
.page_issue .obj_article_summary > .title a { color: var(--jd-ink); }
.page_issue .obj_article_summary > .title a:hover { color: var(--jd-red-dark); }
.page_issue .obj_article_summary .meta { color: #607179; }
.page_issue_archive .issues_archive { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; padding: 0; }
.page_issue_archive .issues_archive > li { min-width: 0; padding: 22px; border: 1px solid var(--jd-line); background: #fff; list-style: none; }
.page_issue_archive .obj_issue_summary .cover { width: 105px; margin-right: 20px; }
.page_issue_archive .obj_issue_summary .title { color: var(--jd-ink); font-family: var(--jd-serif); font-size: 19px; line-height: 1.35; }
.page_article .obj_article_details > .page_title { font-size: clamp(2rem, 3vw, 3.1rem); line-height: 1.19; }
.page_article .obj_article_details .main_entry .item { border-bottom: 1px solid var(--jd-line); }
.page_article .obj_article_details .main_entry .item .label { color: var(--jd-ink); font-family: var(--jd-serif); }
.page_article .obj_article_details .entry_details { border: 1px solid var(--jd-line); background: #fff; }
.page_article .obj_article_details .entry_details .item { border-bottom: 1px solid var(--jd-line); }
.obj_galley_link.pdf { border-radius: 0; background: var(--jd-red); color: #fff; }
.obj_galley_link.pdf:hover { background: var(--jd-red-dark); color: #fff; }

/* Journal footer keeps the native OJS attribution and page footer content. */
.pkp_structure_footer_wrapper { background: var(--jd-navy-deep); color: #d4dee1; }
.pkp_structure_footer { text-align: left; }
.journal_footer_grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 55px; padding: 62px 0 48px; border-bottom: 1px solid rgba(255,255,255,.18); }
.journal_footer_identity .journal_eyebrow { max-width: 300px; color: #fff; font-family: var(--jd-serif); font-size: 21px; line-height: 1.25; letter-spacing: -.02em; text-transform: none; }
.journal_footer_identity > p:not(.journal_eyebrow) { max-width: 380px; color: #b6c5ca; font-size: 13px; line-height: 1.7; }
.journal_footer_identity small { color: #c9d5d9; font-size: 11px; }
.journal_footer_links { display: flex; flex-direction: column; gap: 12px; }
.journal_footer_links h2 { margin: 0 0 4px; color: #fff; font-family: var(--jd-sans); font-size: 11px; font-weight: 800; letter-spacing: .12em; text-transform: uppercase; }
.journal_footer_links a { color: #cbd7db; font-size: 12px; text-decoration: none; }
.journal_footer_links a:hover { color: #fff; text-decoration: underline; }
.pkp_footer_content { padding-left: 0; padding-right: 0; }
.pkp_brand_footer { padding: 23px 0 30px; }
.pkp_brand_footer img { max-height: 30px; width: auto; filter: grayscale(1) brightness(0) invert(1); opacity: .78; }

@media (min-width: 992px) {
  .pkp_head_wrapper { padding-top: 50px; }
  .pkp_site_name_wrapper,
  .pkp_navigation_primary_wrapper { width: calc(100% - 64px); }
  .pkp_site_name_wrapper { padding-top: 5px; padding-bottom: 36px; }
  .pkp_site_name .is_text { font-size: clamp(2rem, 3vw, 2.9rem); line-height: 1.16; }
  .pkp_site_nav_menu { background: #fff; border-top: 1px solid rgba(255,255,255,.12); border-bottom: 1px solid var(--jd-line); }
  .pkp_navigation_primary_wrapper { padding-left: 0; padding-right: 0; }
  .pkp_navigation_primary > li > a,
  .pkp_navigation_search_wrapper a { color: var(--jd-ink) !important; font-size: 12px; font-weight: 800; letter-spacing: .065em; text-transform: uppercase; }
  .pkp_navigation_primary > li > a:hover,
  .pkp_navigation_primary > li > a:focus,
  .pkp_navigation_search_wrapper a:hover { color: var(--jd-red-dark) !important; border-color: var(--jd-red) !important; }
  .pkp_navigation_primary ul a { color: var(--jd-ink); font-size: 13px; }
  .pkp_navigation_primary ul a:hover { color: var(--jd-red-dark); }
  .pkp_navigation_user_wrapper { max-width: 1280px; width: calc(100% - 64px); }
  .pkp_structure_content { width: calc(100% - 64px); padding-top: 44px; }
  .pkp_structure_main { width: calc(100% - 300px); padding: 0 50px 80px 0; }
  .pkp_structure_sidebar { width: 300px; }
  .pkp_structure_footer { width: calc(100% - 64px); }
}

@media (max-width: 991px) {
  .pkp_site_name_wrapper { height: 76px; }
  .pkp_site_name { left: 60px; right: 18px; padding-left: 0; white-space: normal; }
  .pkp_site_name .is_text { display: block; padding: 14px 0; font-size: clamp(17px, 3.2vw, 24px); line-height: 1.22; }
  .pkp_site_nav_toggle { top: 6px; left: 4px; }
  .pkp_site_nav_menu { border-top: 1px solid rgba(255,255,255,.18); }
  .pkp_site_nav_menu .pkp_navigation_primary > li > a,
  .pkp_site_nav_menu .pkp_navigation_search_wrapper a { color: #fff; }
  .pkp_structure_content { padding-top: 0; }
  .pkp_structure_main { padding: 28px 24px 52px; }
  .pkp_structure_sidebar { padding: 0 24px 48px; }
  .pkp_page_index .pkp_structure_sidebar { grid-template-columns: repeat(2, minmax(0,1fr)); padding: 0 0 48px; }
  .pkp_page_index .pkp_block:nth-child(odd) { border-left: 1px solid var(--jd-line); }
  .pkp_page_index .pkp_block:nth-child(n+3) { border-top: 0; }
  .journal_hero { grid-template-columns: minmax(0,1.25fr) minmax(250px,.75fr); }
  .journal_hero_copy { padding: 50px 32px; }
  .pkp_structure_main .journal_hero h2 { font-size: clamp(2.7rem, 5vw, 4rem); }
  .journal_footer_grid { padding-left: 24px; padding-right: 24px; }
  .pkp_brand_footer, .pkp_footer_content { padding-left: 24px; padding-right: 24px; }
}

@media (max-width: 700px) {
  .pkp_page_index .pkp_structure_main { padding: 0 0 25px; }
  .journal_hero { display: flex; flex-direction: column; }
  .journal_hero_copy { padding: 42px 25px 36px; }
  .pkp_structure_main .journal_hero h2 { font-size: clamp(2.55rem, 9vw, 3.5rem); }
  .journal_hero_intro { margin-top: 20px; font-size: 15px; }
  .journal_hero_actions { margin-top: 23px; }
  .journal_hero_identifiers { margin-top: 34px; }
  .journal_hero_issue { flex-direction: row; justify-content: flex-start; gap: 25px; align-items: center; padding: 25px; text-align: left; }
  .journal_hero_issue .journal_eyebrow { display: none; }
  .journal_issue_cover { width: 95px; flex: 0 0 95px; }
  .journal_issue_caption { margin: 0; text-align: left; }
  .journal_issue_caption strong { font-size: 15px; }
  .pkp_page_index .current_issue { padding: 45px 24px; }
  .journal_section_heading { align-items: start; flex-direction: column; gap: 7px; }
  .journal_section_heading > p { text-align: left; }
  .journal_featured_articles { grid-template-columns: 1fr; }
  .journal_featured_articles > li { padding: 23px 0; }
  .journal_paths { grid-template-columns: 1fr; }
  .journal_path { min-height: 0; padding: 25px; border-right: 0; border-bottom: 1px solid #d5dedf; }
  .journal_path:last-child { border-bottom: 0; }
  .journal_path .journal_eyebrow { margin-bottom: 10px; }
  .journal_path > span:last-child { margin-top: 7px; }
  .pkp_page_index .pkp_structure_sidebar { grid-template-columns: 1fr; padding: 0 20px 45px; }
  .pkp_page_index .pkp_block + .pkp_block,
  .pkp_page_index .pkp_block:nth-child(n+3) { border: 1px solid var(--jd-line); border-top: 0; }
  .page_issue_archive .issues_archive { grid-template-columns: 1fr; }
  .journal_footer_grid { grid-template-columns: repeat(2,1fr); gap: 32px; padding-top: 48px; }
  .journal_footer_identity { grid-column: 1 / -1; }
}

@media (prefers-reduced-motion: reduce) { .journal_issue_cover { transition: none; } }