/* ============================================================
   IJRDO – Journal of Mechanical And Civil Engineering
   OJS Header CSS  |  Steel-Blue Industrial Theme
   Mirrors the Agriculture journal two-zone layout
   ============================================================ */

/* ---------- Google Font ---------- */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:ital,wght@0,400;0,600;0,700;1,600&display=swap');

/* ============================================================
   1. ROOT VARIABLES
   ============================================================ */
:root {
  --mce-primary:       #1B3F72;   /* deep steel blue            */
  --mce-primary-dark:  #122B52;   /* darker shade for gradient  */
  --mce-accent:        #2E86C1;   /* mid-blue accent            */
  --mce-gold:          #C8A951;   /* subtle gold trim           */
  --mce-white:         #FFFFFF;
  --mce-nav-bg:        #FFFFFF;
  --mce-nav-border:    #D6E4F0;
  --mce-nav-text:      #1B3F72;
  --mce-nav-hover:     #2E86C1;
  --mce-dropdown-bg:   #FFFFFF;
  --mce-dropdown-hover:#EBF5FB;
  --mce-font:          'Montserrat', 'Segoe UI', Arial, sans-serif;
}

/* ============================================================
   2. HEADER WRAPPER  – replaces background-image with solid
   ============================================================ */
header.main-header,
#immersion_content_header {
  background-image: none !important;
  background: linear-gradient(135deg, var(--mce-primary-dark) 0%, var(--mce-primary) 60%, var(--mce-accent) 100%) !important;
  border-bottom: 3px solid var(--mce-gold);
  font-family: var(--mce-font);
  padding: 0;
  position: relative;
}

/* fluid container inside header */
header.main-header .container-fluid {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ============================================================
   3. ADMIN / USER NAV  (top-right  Register | Login strip)
   ============================================================ */
.main-header__admin {
  display: flex !important;
  justify-content: flex-end;
  align-items: center;
  padding: 8px 0 0;
  background: transparent;
  border-bottom: 1px solid rgba(255,255,255,0.10);
  margin-bottom: 0;
}

/* hide the sr-only heading visually but keep accessible */
.main-header__admin .sr-only {
  position: absolute;
  width: 1px; height: 1px;
  clip: rect(0 0 0 0);
  overflow: hidden;
}

/* user nav list */
ul.pkp_navigation_user.pkp_nav_list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 0;
}

/* individual user nav items */
ul.pkp_navigation_user .nav-item {
  margin: 0;
}

/* the top-level "ijrdo-journal 89" dropdown toggle */
.main-header__admin-link,
.main-header__admin .dropdown-toggle {
  font-family: var(--mce-font);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--mce-white) !important;
  padding: 6px 14px;
  border: 1px solid rgba(255,255,255,0.30);
  border-radius: 4px;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: background 0.2s, border-color 0.2s;
  margin-bottom: 8px;
}

.main-header__admin-link:hover,
.main-header__admin .dropdown-toggle:hover {
  background: rgba(255,255,255,0.12);
  border-color: rgba(255,255,255,0.55);
  color: var(--mce-white) !important;
  text-decoration: none;
}

/* task count badge */
.main-header__admin .task_count {
  background: var(--mce-gold);
  color: #1B3F72;
  font-size: 10px;
  font-weight: 700;
  padding: 1px 7px;
  border-radius: 12px;
  margin-left: 2px;
}

/* admin dropdown menu */
.main-header__admin .dropdown-menu {
  background: var(--mce-dropdown-bg);
  border: 1px solid var(--mce-nav-border);
  border-radius: 6px;
  box-shadow: 0 6px 24px rgba(27,63,114,0.18);
  padding: 4px 0;
  min-width: 180px;
  margin-top: 2px;
}

.main-header__admin .dropdown-menu .dropdown-item {
  padding: 0;
}

.main-header__admin .dropdown-menu .nav-link {
  display: block;
  padding: 9px 16px;
  font-size: 13px;
  font-weight: 500;
  color: var(--mce-nav-text);
  text-decoration: none;
  transition: background 0.15s;
}

.main-header__admin .dropdown-menu .nav-link:hover {
  background: var(--mce-dropdown-hover);
  color: var(--mce-accent);
}

/* ============================================================
   4. JOURNAL LOGO / TITLE  (big, bold, centered like Agri)
   ============================================================ */
h1.main-header__title {
  text-align: center;
  margin: 24px 0 20px;
  padding: 0;
  line-height: 1.2;
}

h1.main-header__title a,
h1.main-header__title a.is_text {
  font-family: var(--mce-font);
  font-size: clamp(22px, 3vw, 34px);   /* responsive — never tiny */
  font-weight: 700;
  font-style: italic;
  letter-spacing: 0.03em;
  color: var(--mce-white) !important;
  text-decoration: none;
  text-shadow: 0 2px 8px rgba(0,0,0,0.35);
  display: inline-block;
  position: relative;
  padding-bottom: 6px;
}

/* gold underline accent below title (like Agriculture border) */
h1.main-header__title a::after {
  content: '';
  display: block;
  height: 2px;
  width: 60%;
  margin: 8px auto 0;
  background: var(--mce-gold);
  border-radius: 2px;
}

h1.main-header__title a:hover {
  color: #D6EAF8 !important;
  text-decoration: none;
}

/* title text span */
h1.main-header__title span {
  display: block;
}

/* ============================================================
   5. PRIMARY NAV BAR  (white bar below header like Agri)
   ============================================================ */
nav.main-header__nav.navbar {
  background: var(--mce-nav-bg) !important;
  border-top: none;
  box-shadow: 0 2px 8px rgba(27,63,114,0.12);
  padding: 0;
  margin-top: 0;
}

/* nav inner container – centre items */
nav.main-header__nav .navbar-collapse {
  justify-content: center;
}

/* primary nav list */
ul#navigationPrimary.pkp_navigation_primary.pkp_nav_list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: stretch;
  gap: 0;
}

/* nav items */
ul#navigationPrimary .nav-item {
  position: relative;
}

/* nav links */
a.main-header__nav-link {
  font-family: var(--mce-font);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mce-nav-text) !important;
  text-decoration: none;
  padding: 14px 18px;
  display: flex;
  align-items: center;
  gap: 4px;
  border-bottom: 3px solid transparent;
  transition: color 0.2s, border-color 0.2s, background 0.2s;
  white-space: nowrap;
}

a.main-header__nav-link:hover,
ul#navigationPrimary .nav-item.show > a.main-header__nav-link {
  color: var(--mce-accent) !important;
  border-bottom-color: var(--mce-accent);
  background: rgba(46,134,193,0.06);
  text-decoration: none;
}

/* active / current page */
ul#navigationPrimary .nmi_type_current > a.main-header__nav-link,
ul#navigationPrimary .nav-item.active > a.main-header__nav-link {
  color: var(--mce-accent) !important;
  border-bottom-color: var(--mce-gold);
}

/* dropdown caret polish */
a.main-header__nav-link.dropdown-toggle::after {
  content: '';
  display: inline-block;
  width: 0; height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid currentColor;
  margin-left: 4px;
  vertical-align: middle;
  transition: transform 0.2s;
}

.nav-item.show > a.main-header__nav-link.dropdown-toggle::after {
  transform: rotate(180deg);
}

/* ============================================================
   6. DROPDOWN MENUS  (primary nav)
   ============================================================ */
ul#navigationPrimary .dropdown-menu {
  background: var(--mce-dropdown-bg);
  border: 1px solid var(--mce-nav-border);
  border-top: 3px solid var(--mce-accent);
  border-radius: 0 0 8px 8px;
  box-shadow: 0 8px 28px rgba(27,63,114,0.14);
  padding: 6px 0;
  min-width: 220px;
  margin-top: 0;
  top: 100%;
  left: 0;
  animation: mce-fadeIn 0.15s ease;
}

@keyframes mce-fadeIn {
  from { opacity: 0; transform: translateY(-6px); }
  to   { opacity: 1; transform: translateY(0); }
}

ul#navigationPrimary .dropdown-menu .dropdown-item {
  padding: 0;
  background: transparent;
}

ul#navigationPrimary .dropdown-menu .nav-link {
  display: block;
  padding: 10px 20px;
  font-family: var(--mce-font);
  font-size: 13px;
  font-weight: 500;
  color: var(--mce-nav-text);
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}

ul#navigationPrimary .dropdown-menu .nav-link:hover {
  background: var(--mce-dropdown-hover);
  border-left-color: var(--mce-accent);
  color: var(--mce-accent);
}

/* divider between dropdown items */
ul#navigationPrimary .dropdown-menu .dropdown-item + .dropdown-item {
  border-top: 1px solid rgba(214,228,240,0.6);
}

/* ============================================================
   7. HAMBURGER / MOBILE TOGGLE
   ============================================================ */
.navbar-toggler.hamburger {
  background: rgba(255,255,255,0.12) !important;
  border: 1px solid rgba(255,255,255,0.35) !important;
  border-radius: 4px;
  padding: 8px 12px;
  cursor: pointer;
  margin: 8px auto;
  display: none;
}

.hamburger__icon,
.hamburger__icon::before,
.hamburger__icon::after {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--mce-white);
  border-radius: 2px;
  position: relative;
  transition: all 0.25s;
}

.hamburger__icon::before,
.hamburger__icon::after {
  content: '';
  position: absolute;
  left: 0;
}

.hamburger__icon::before { top: -7px; }
.hamburger__icon::after  { top:  7px; }

/* ============================================================
   8. RESPONSIVE
   ============================================================ */
@media (max-width: 991px) {

  .navbar-toggler.hamburger {
    display: block;
  }

  h1.main-header__title {
    margin: 16px 0 14px;
  }

  h1.main-header__title a {
    font-size: clamp(16px, 4vw, 24px);
  }

  /* collapsed menu becomes vertical */
  nav.main-header__nav .collapse:not(.show) {
    display: none;
  }

  nav.main-header__nav .collapse.show {
    display: block;
  }

  ul#navigationPrimary.pkp_navigation_primary {
    flex-direction: column;
    width: 100%;
    padding: 8px 0;
  }

  a.main-header__nav-link {
    padding: 12px 20px;
    border-bottom: none;
    border-left: 3px solid transparent;
  }

  a.main-header__nav-link:hover {
    border-bottom: none;
    border-left-color: var(--mce-accent);
  }

  ul#navigationPrimary .dropdown-menu {
    position: static;
    border-top: none;
    border-left: 3px solid var(--mce-accent);
    border-right: none;
    border-bottom: none;
    box-shadow: none;
    border-radius: 0;
    margin-left: 16px;
    animation: none;
  }
}

@media (max-width: 576px) {
  header.main-header .container-fluid {
    padding: 0 12px;
  }

  h1.main-header__title a {
    font-size: 16px;
  }

  a.main-header__nav-link {
    font-size: 12px;
    padding: 10px 16px;
  }
}

/* ============================================================
   9. SEARCH BAR  (if present – matches nav style)
   ============================================================ */
.pkp_search input[type="text"],
.pkp_search .search_input {
  border: 1px solid var(--mce-nav-border);
  border-radius: 4px 0 0 4px;
  padding: 7px 12px;
  font-family: var(--mce-font);
  font-size: 13px;
  color: var(--mce-nav-text);
  outline: none;
  transition: border-color 0.2s;
}

.pkp_search input[type="text"]:focus {
  border-color: var(--mce-accent);
}

.pkp_search button,
.pkp_search .search_button {
  background: var(--mce-accent);
  color: var(--mce-white);
  border: none;
  border-radius: 0 4px 4px 0;
  padding: 7px 14px;
  font-family: var(--mce-font);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s;
}


.footer-brand-image {
   
    display: none;
}


.main-footer img {
    max-width: 100%;
    height: auto;
    display: none;
}


.pkp_search button:hover { background: var(--mce-primary); }

/* ============================================================
   END OF FILE
   ============================================================ */