/*
  RCST Horizon — Professional OJS theme layer
  Target: OJS 3.5.x default theme
  Palette: navy / science blue / cyan / white / light gray / innovation green
*/

:root {
  --rcst-navy: #071B33;
  --rcst-blue: #0E5AA7;
  --rcst-cyan: #18B7D8;
  --rcst-green: #16A34A;
  --rcst-bg: #F4F7FA;
  --rcst-white: #FFFFFF;
  --rcst-text: #1F2937;
  --rcst-muted: #64748B;
  --rcst-line: #E2E8F0;
  --rcst-shadow: 0 18px 45px rgba(7, 27, 51, .10);
}

html, body {
  background: var(--rcst-bg);
  color: var(--rcst-text);
  font-family: "Inter", "Segoe UI", Roboto, Arial, sans-serif;
  line-height: 1.68;
}

a { color: var(--rcst-blue); }
a:hover, a:focus { color: var(--rcst-cyan); }

/* Header / navigation */
.pkp_structure_head {
  background: linear-gradient(135deg, var(--rcst-navy) 0%, #0A2B52 52%, var(--rcst-blue) 100%);
  border-bottom: 5px solid var(--rcst-cyan);
  box-shadow: 0 14px 34px rgba(7, 27, 51, .24);
}

.pkp_head_wrapper {
  max-width: 1180px;
  margin: 0 auto;
  padding-top: 18px;
  padding-bottom: 16px;
}

.pkp_site_name .is_img img,
.pkp_site_name img {
  max-height: 92px;
  width: auto;
  filter: drop-shadow(0 8px 14px rgba(0,0,0,.22));
}

.pkp_navigation_primary_row,
.pkp_navigation_user_wrapper {
  background: transparent;
}

.pkp_navigation_primary > li > a,
.pkp_navigation_user > li > a,
.pkp_site_nav_menu a {
  color: #fff !important;
  font-weight: 800;
  letter-spacing: .01em;
}

.pkp_navigation_primary > li > a {
  border-radius: 999px;
  padding: 10px 15px;
  background: rgba(255,255,255,.10);
  border: 1px solid rgba(255,255,255,.16);
}

.pkp_navigation_primary > li > a:hover,
.pkp_navigation_primary > li > a:focus,
.pkp_navigation_primary > li.current > a {
  background: var(--rcst-cyan);
  color: var(--rcst-navy) !important;
}

.pkp_navigation_search_wrapper a,
.pkp_search_desktop a,
.pkp_site_nav_toggle {
  color: #fff !important;
}

/* Full homepage hero */
.rcst-hero {
  position: relative;
  overflow: hidden;
  background:
    radial-gradient(circle at 78% 18%, rgba(24,183,216,.28), transparent 24rem),
    linear-gradient(135deg, var(--rcst-navy), #0B376D 62%, var(--rcst-blue));
  color: #fff;
  margin: 0 0 34px;
  min-height: 360px;
  box-shadow: var(--rcst-shadow);
}

.rcst-hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image: linear-gradient(120deg, rgba(255,255,255,.08) 1px, transparent 1px);
  background-size: 34px 34px;
  opacity: .25;
}

.rcst-hero__inner {
  position: relative;
  z-index: 1;
  max-width: 1180px;
  min-height: 360px;
  margin: 0 auto;
  padding: 58px 28px;
  display: flex;
  align-items: center;
}

.rcst-hero__content { max-width: 760px; }
.rcst-hero__eyebrow {
  display: inline-block;
  background: rgba(24,183,216,.16);
  border: 1px solid rgba(24,183,216,.56);
  color: #BFF4FF;
  border-radius: 999px;
  padding: 7px 13px;
  font-size: 12px;
  text-transform: uppercase;
  font-weight: 900;
  letter-spacing: .11em;
  margin-bottom: 15px;
}

.rcst-hero h1 {
  color: #fff !important;
  font-size: 46px;
  line-height: 1.08;
  margin: 0 0 14px;
  font-weight: 950;
}

.rcst-hero p {
  color: rgba(255,255,255,.90);
  font-size: 18px;
  max-width: 680px;
  margin: 0 0 24px;
}

.rcst-hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.rcst-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 12px 18px;
  font-weight: 900;
  text-decoration: none !important;
  border: 1px solid transparent;
}
.rcst-btn--primary { background: var(--rcst-cyan); color: var(--rcst-navy) !important; }
.rcst-btn--secondary { background: rgba(255,255,255,.10); color: #fff !important; border-color: rgba(255,255,255,.28); }
.rcst-btn:hover { transform: translateY(-2px); }

/* Layout cards */
.pkp_structure_content {
  max-width: 1180px;
  margin: 0 auto;
}

.pkp_structure_main {
  background: #fff;
  border: 1px solid rgba(14,90,167,.10);
  border-radius: 22px;
  box-shadow: var(--rcst-shadow);
  padding: 30px;
}

.pkp_structure_sidebar .pkp_block {
  background: #fff;
  border: 1px solid var(--rcst-line);
  border-radius: 18px;
  box-shadow: 0 12px 28px rgba(7, 27, 51, .06);
  padding: 20px;
  margin-bottom: 18px;
}

.pkp_block .title,
.pkp_structure_main h1,
.pkp_structure_main h2,
.pkp_structure_main h3,
.current_issue_title {
  color: var(--rcst-navy) !important;
  font-weight: 900;
}

.pkp_structure_main h2::after,
.current_issue_title::after,
.homepage_about h2::after {
  content: "";
  display: block;
  width: 74px;
  height: 4px;
  margin-top: 10px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--rcst-cyan), var(--rcst-green));
}

.homepage_about,
.current_issue {
  background: linear-gradient(135deg, #FFFFFF, #F8FCFF);
  border: 1px solid var(--rcst-line);
  border-radius: 20px;
  padding: 24px;
  margin-bottom: 26px;
}

/* Issue and article lists */
.obj_issue_toc .heading,
.section {
  border-color: var(--rcst-line) !important;
}

.cmp_article_list .obj_article_summary,
.obj_article_summary {
  background: #fff;
  border: 1px solid var(--rcst-line);
  border-left: 5px solid var(--rcst-cyan);
  border-radius: 16px;
  padding: 18px 20px;
  margin-bottom: 16px;
  transition: transform .18s ease, box-shadow .18s ease, border-color .18s ease;
}

.obj_article_summary:hover {
  transform: translateY(-3px);
  border-color: rgba(24,183,216,.55);
  box-shadow: 0 16px 34px rgba(7, 27, 51, .10);
}

.obj_article_summary .title,
.obj_article_summary .title a {
  color: var(--rcst-navy) !important;
  font-weight: 900;
  text-decoration: none;
}

.obj_article_summary .authors,
.obj_article_summary .pages,
.obj_article_summary .published {
  color: var(--rcst-muted);
}

.galleys_links a,
.cmp_manuscript_button,
.cmp_button,
button.submit,
.pkp_button,
.block_make_submission_link {
  background: var(--rcst-blue) !important;
  border-color: var(--rcst-blue) !important;
  color: #fff !important;
  border-radius: 999px !important;
  font-weight: 900 !important;
  box-shadow: none !important;
}

.galleys_links a:hover,
.cmp_button:hover,
.pkp_button:hover,
.block_make_submission_link:hover {
  background: var(--rcst-cyan) !important;
  border-color: var(--rcst-cyan) !important;
  color: var(--rcst-navy) !important;
}

/* Footer and partners */
.pkp_structure_footer_wrapper,
.pkp_footer_content,
footer {
  background: var(--rcst-navy) !important;
  color: rgba(255,255,255,.86) !important;
}

.rcst-partners {
  background: rgba(255,255,255,.08);
  border-top: 1px solid rgba(255,255,255,.14);
  padding: 28px 0;
  margin-top: 34px;
}
.rcst-partners__inner {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 28px;
}
.rcst-partners h2 {
  color: #fff;
  margin: 0 0 16px;
  font-size: 20px;
  font-weight: 950;
}
.rcst-partners__logos {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 16px;
}
.rcst-partners__logos img {
  height: 56px;
  max-width: 175px;
  object-fit: contain;
  background: #fff;
  border-radius: 14px;
  padding: 10px 14px;
}

/* Floating action widgets */
.rcst-floating-actions {
  position: fixed;
  right: 20px;
  bottom: 22px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.rcst-floating-actions a {
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: 160px;
  padding: 12px 15px;
  border-radius: 999px;
  text-decoration: none !important;
  color: #fff !important;
  font-weight: 900;
  background: linear-gradient(135deg, var(--rcst-blue), var(--rcst-cyan));
  box-shadow: 0 14px 32px rgba(7, 27, 51, .24);
}
.rcst-floating-actions a:last-child {
  background: linear-gradient(135deg, var(--rcst-green), #34D399);
  color: var(--rcst-navy) !important;
}

@media (max-width: 767px) {
  .pkp_head_wrapper { padding-left: 16px; padding-right: 16px; }
  .rcst-hero, .rcst-hero__inner { min-height: 380px; }
  .rcst-hero__inner { padding: 42px 20px; }
  .rcst-hero h1 { font-size: 31px; }
  .rcst-hero p { font-size: 16px; }
  .pkp_structure_main { padding: 20px; border-radius: 16px; }
  .rcst-floating-actions { right: 12px; bottom: 12px; }
  .rcst-floating-actions a { min-width: auto; padding: 12px; }
  .rcst-floating-actions span:last-child { display: none; }
  .rcst-partners__logos img { height: 48px; max-width: 140px; }
}

/* =========================================================
   RCST Horizon 2 corrections
   - no partners block
   - visible submenu/dropdowns
   - hide search button in top navigation
   ========================================================= */

/* Remove partner/indexation area from this version */
.rcst-partners,
.rcst-partners__inner,
.rcst-partners__logos {
  display: none !important;
}

/* Hide search button/icon in the navigation bar only */
.pkp_navigation_search_wrapper,
.pkp_search_desktop,
.pkp_search_mobile,
.pkp_navigation_primary .search,
.pkp_navigation_primary a[href*="/search"] {
  display: none !important;
}

/* Make dropdown/submenu clearly visible against the dark header */
.pkp_navigation_primary li {
  position: relative;
}

.pkp_navigation_primary ul,
.pkp_navigation_primary li ul,
.pkp_navigation_primary .dropdown-menu {
  background: #FFFFFF !important;
  border: 1px solid rgba(7, 27, 51, .14) !important;
  border-top: 4px solid var(--rcst-cyan) !important;
  border-radius: 14px !important;
  box-shadow: 0 18px 42px rgba(7, 27, 51, .22) !important;
  padding: 8px !important;
  min-width: 230px !important;
  z-index: 99999 !important;
}

.pkp_navigation_primary ul li,
.pkp_navigation_primary li ul li,
.pkp_navigation_primary .dropdown-menu li {
  display: block !important;
  width: 100% !important;
}

.pkp_navigation_primary ul a,
.pkp_navigation_primary li ul a,
.pkp_navigation_primary .dropdown-menu a {
  display: block !important;
  color: var(--rcst-navy) !important;
  background: #FFFFFF !important;
  border-radius: 10px !important;
  padding: 10px 12px !important;
  font-weight: 800 !important;
  text-shadow: none !important;
  white-space: nowrap;
}

.pkp_navigation_primary ul a:hover,
.pkp_navigation_primary ul a:focus,
.pkp_navigation_primary li ul a:hover,
.pkp_navigation_primary li ul a:focus,
.pkp_navigation_primary .dropdown-menu a:hover,
.pkp_navigation_primary .dropdown-menu a:focus {
  color: #FFFFFF !important;
  background: var(--rcst-blue) !important;
}

/* If OJS marks submenu as dropdown, keep contrast even before hover/focus */
.pkp_navigation_primary li:hover > ul,
.pkp_navigation_primary li:focus-within > ul {
  display: block;
}

/* Improve parent items that have children */
.pkp_navigation_primary > li > a[aria-haspopup="true"],
.pkp_navigation_primary > li > a.dropdown-toggle {
  background: rgba(24,183,216,.18) !important;
  border-color: rgba(24,183,216,.42) !important;
}

@media (max-width: 767px) {
  .pkp_navigation_primary ul,
  .pkp_navigation_primary li ul,
  .pkp_navigation_primary .dropdown-menu {
    position: static !important;
    min-width: 100% !important;
    box-shadow: none !important;
    border-radius: 12px !important;
    margin-top: 8px !important;
  }

  .pkp_navigation_primary ul a,
  .pkp_navigation_primary li ul a,
  .pkp_navigation_primary .dropdown-menu a {
    white-space: normal;
  }
}