/* ==========================================================================
   Modern Academic Theme - CSS Variables based on DESIGN.md
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Hanken+Grotesk:wght@400;500;600&family=Source+Serif+4:opsz,wght@8..60,600;8..60,700&display=swap');

:root {
  /* Colors */
  --color-surface: #f7f9fb;
  --color-surface-dim: #d8dadc;
  --color-surface-bright: #f7f9fb;
  --color-surface-container-lowest: #ffffff;
  --color-surface-container-low: #f2f4f6;
  --color-surface-container: #eceef0;
  --color-surface-container-high: #e6e8ea;
  --color-surface-container-highest: #e0e3e5;
  --color-on-surface: #191c1e;
  --color-on-surface-variant: #45474c;
  --color-inverse-surface: #2d3133;
  --color-inverse-on-surface: #eff1f3;
  --color-outline: #75777d;
  --color-outline-variant: #c5c6cd;
  --color-surface-tint: #545f73;
  
  --color-primary: #091426; /* Deep Slate */
  --color-on-primary: #ffffff;
  --color-primary-container: #1e293b;
  --color-on-primary-container: #8590a6;
  --color-inverse-primary: #bcc7de;
  --color-primary-fixed: #d8e3fb;
  --color-primary-fixed-dim: #bcc7de;
  --color-on-primary-fixed: #111c2d;
  --color-on-primary-fixed-variant: #3c475a;
  
  --color-secondary: #006a61; /* Teal */
  --color-on-secondary: #ffffff;
  --color-secondary-container: #86f2e4;
  --color-on-secondary-container: #006f66;
  --color-secondary-fixed: #89f5e7;
  --color-secondary-fixed-dim: #6bd8cb;
  --color-on-secondary-fixed: #00201d;
  --color-on-secondary-fixed-variant: #005049;
  
  --color-tertiary: #040057; /* Indigo */
  --color-on-tertiary: #ffffff;
  --color-tertiary-container: #0d0093;
  --color-on-tertiary-container: #7f82ff;
  --color-tertiary-fixed: #e1e0ff;
  --color-tertiary-fixed-dim: #c0c1ff;
  --color-on-tertiary-fixed: #07006c;
  --color-on-tertiary-fixed-variant: #2f2ebe;
  
  --color-error: #ba1a1a;
  --color-on-error: #ffffff;
  --color-error-container: #ffdad6;
  --color-on-error-container: #93000a;
  
  --color-background: #f7f9fb;
  --color-on-background: #191c1e;
  --color-surface-variant: #e0e3e5;

  /* Typography */
  --font-family-serif: 'Source Serif 4', serif;
  --font-family-sans: 'Hanken Grotesk', sans-serif;
  
  /* Border Radius */
  --radius-sm: 0.25rem; /* 4px */
  --radius-base: 0.5rem; /* 8px */
  --radius-md: 0.75rem; /* 12px */
  --radius-lg: 1rem; /* 16px */
  --radius-xl: 1.5rem; /* 24px */
  --radius-full: 9999px;

  /* Spacing */
  --spacing-base: 8px;
  --spacing-mobile: 16px;
  --spacing-gutter: 24px;
  --spacing-desktop: 40px;
  --spacing-section: 64px;
  --spacing-section-large: 80px;

  /* Layout */
  --container-max: 1280px;
  --reading-width-max: 75ch;
  
  /* Elevation */
  --shadow-level-1: none;
  --border-level-1: 1px solid var(--color-surface-container-highest);
  --shadow-level-2: 0px 4px 20px rgba(30, 41, 59, 0.08);
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
  background-color: var(--color-background);
  color: var(--color-on-background);
  font-family: var(--font-family-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 24px;
  -webkit-font-smoothing: antialiased;
}

/* Typography Scale */
h1, .display-lg {
  font-family: var(--font-family-serif);
  font-size: 32px;
  font-weight: 700;
  line-height: 40px;
  margin-top: 0;
  margin-bottom: var(--spacing-gutter);
}

@media (min-width: 768px) {
  h1, .display-lg {
    font-size: 48px;
    line-height: 56px;
    letter-spacing: -0.02em;
  }
}

h2, .headline-md {
  font-family: var(--font-family-serif);
  font-size: 24px;
  font-weight: 600;
  line-height: 32px;
  margin-top: var(--spacing-desktop);
  margin-bottom: var(--spacing-mobile);
}

h3, h4, h5, h6 {
  font-family: var(--font-family-serif);
  margin-top: var(--spacing-gutter);
  margin-bottom: var(--spacing-base);
}

p, .body-md {
  font-family: var(--font-family-sans);
  font-size: 16px;
  font-weight: 400;
  line-height: 24px;
  margin-top: 0;
  margin-bottom: var(--spacing-mobile);
}

.body-lg {
  font-size: 18px;
  line-height: 28px;
}

.label-md {
  font-size: 14px;
  font-weight: 600;
  line-height: 20px;
  letter-spacing: 0.01em;
}

.label-sm {
  font-size: 12px;
  font-weight: 500;
  line-height: 16px;
}

a {
  color: var(--color-tertiary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover, a:focus {
  color: var(--color-tertiary-container);
  text-decoration: underline;
}

/* ==========================================================================
   Layout
   ========================================================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-mobile);
}

@media (min-width: 768px) {
  .container {
    padding: 0 var(--spacing-gutter);
  }
}

@media (min-width: 1280px) {
  .container {
    padding: 0 var(--spacing-desktop);
  }
}

/* Grid Layout */
.grid {
  display: grid;
  gap: var(--spacing-gutter);
  grid-template-columns: repeat(4, 1fr);
}

@media (min-width: 768px) {
  .grid {
    grid-template-columns: repeat(8, 1fr);
  }
}

@media (min-width: 1280px) {
  .grid {
    grid-template-columns: repeat(12, 1fr);
  }
}

.reading-content {
  max-width: var(--reading-width-max);
  margin: 0 auto;
}

/* ==========================================================================
   Components
   ========================================================================== */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-base) var(--spacing-mobile);
  font-family: var(--font-family-sans);
  font-size: 14px;
  font-weight: 600;
  line-height: 20px;
  letter-spacing: 0.01em;
  border-radius: var(--radius-base);
  border: none;
  cursor: pointer;
  transition: background-color 0.2s ease, box-shadow 0.2s ease, transform 0.1s ease;
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background-color: var(--color-secondary);
  color: var(--color-on-secondary);
}

.btn-primary:hover, .btn-primary:focus {
  background-color: var(--color-on-secondary-container);
  text-decoration: none;
}

/* Cards */
.card {
  background-color: var(--color-surface-container-lowest);
  border: var(--border-level-1);
  border-radius: var(--radius-lg);
  padding: var(--spacing-gutter);
  transition: border-color 0.2s ease;
}

.card:hover {
  border-color: var(--color-outline-variant);
}

.card-title {
  font-family: var(--font-family-serif);
  color: var(--color-primary);
  margin-top: 0;
  margin-bottom: var(--spacing-base);
}

/* Modal / Dropdown */
.elevated-layer {
  background-color: var(--color-surface-container-lowest);
  border-radius: var(--radius-base);
  box-shadow: var(--shadow-level-2);
}

/* Chips / Badges */
.chip {
  display: inline-flex;
  align-items: center;
  padding: 4px var(--spacing-base);
  border-radius: var(--radius-base);
  background-color: var(--color-surface-container);
  color: var(--color-on-surface-variant);
  font-size: 12px;
  font-weight: 600;
}

/* Input Fields */
.input-field {
  width: 100%;
  padding: 10px 14px;
  font-family: var(--font-family-sans);
  font-size: 16px;
  color: var(--color-on-surface);
  background-color: var(--color-surface-container-lowest);
  border: 1px solid var(--color-outline-variant);
  border-radius: var(--radius-base);
  transition: border-color 0.2s ease, outline 0.2s ease;
}

.input-field:focus {
  outline: none;
  border-color: var(--color-tertiary);
  border-width: 2px;
  padding: 9px 13px;
}

/* Checkboxes */
.checkbox {
  border-radius: var(--radius-sm);
  accent-color: var(--color-secondary);
}

/* Lists / Tables */
.data-list {
  width: 100%;
  border-collapse: collapse;
}

.data-list th, .data-list td {
  padding: var(--spacing-mobile);
  text-align: left;
  border: none;
}

.data-list tbody tr:nth-child(even) {
  background-color: var(--color-surface-container-low);
}

/* Utility Classes */
.mb-section { margin-bottom: var(--spacing-section); }
.mt-section { margin-top: var(--spacing-section); }
.text-center { text-align: center; }

/* ==========================================================================
   OJS 3 Core Structure Integration
   ========================================================================== */

/* Page Wrapper */
.pkp_structure_page {
  background-color: var(--color-background);
  color: var(--color-on-background);
  font-family: var(--font-family-sans);
  font-size: 16px;
  line-height: 24px;
}

/* Header & Navigation */
.pkp_structure_head {
  background-color: rgba(255, 255, 255, 0.95) !important;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--color-surface-container-highest);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.05) !important;
  position: relative;
  z-index: 1000;
}

.pkp_site_name a, .pkp_site_name .is_text {
  font-family: var(--font-family-serif) !important;
  color: var(--color-primary) !important;
}

/* Nav Menu Overrides (Default / Mobile) */
.pkp_structure_head .pkp_nav_list a,
.pkp_structure_head .pkp_nav_list > li > a,
.pkp_structure_head .pkp_navigation_search_wrapper a {
  color: var(--color-primary) !important;
  font-family: var(--font-family-sans) !important;
  font-weight: 600 !important;
  transition: all 0.3s ease !important;
}

.pkp_structure_head .pkp_nav_list a:hover,
.pkp_structure_head .pkp_nav_list a:focus,
.pkp_structure_head .pkp_navigation_search_wrapper a:hover {
  color: var(--color-secondary) !important;
  text-decoration: none;
}

/* Nav Submenus dihapus dari global scope agar tidak mengacaukan mobile dropdown */

/* Mobile Toggle */
.pkp_site_nav_toggle > span {
  border-bottom-color: var(--color-primary) !important;
}
.pkp_site_nav_toggle > span::before,
.pkp_site_nav_toggle > span::after {
  background-color: var(--color-primary) !important;
}

/* Mobile Dropdown Menu Fix */
@media (max-width: 991px) {
  .pkp_navigation_primary_row,
  .pkp_navigation_primary_wrapper {
    background-color: var(--color-primary-container) !important; /* Biru yang sama dengan footer */
    box-shadow: var(--shadow-level-2) !important;
    z-index: 9999 !important;
    position: relative;
  }
  
  .pkp_navigation_user_wrapper {
    background-color: transparent !important;
    box-shadow: none !important;
  }
  
  /* Menu Utama (Terkini, Arsip, dll) */
  .pkp_structure_head .pkp_navigation_primary_wrapper .pkp_nav_list a,
  .pkp_structure_head .pkp_navigation_primary_wrapper .pkp_nav_list > li > a {
    color: #ffffff !important; /* Teks putih terang untuk kontras */
  }

  /* User Menu (Daftar, Login) */
  .pkp_structure_head .pkp_navigation_user_wrapper a,
  .pkp_structure_head .pkp_navigation_user_wrapper .pkp_nav_list > li > a,
  .pkp_structure_head .pkp_navigation_user_wrapper .pkp_nav_list a {
    color: var(--color-primary) !important; /* Teks gelap tanpa latar */
  }

  /* Pastikan menu bisa diklik dan berada di atas konten lain */
  .pkp_site_nav_menu {
    z-index: 9999 !important;
  }
}

/* Desktop Navbar Fix */
@media (min-width: 992px) {
  .pkp_navigation_primary_row {
    background-color: var(--color-primary-container) !important; /* Biru yang sama dengan footer */
  }
  
  .pkp_navigation_user_wrapper {
    background-color: transparent !important;
  }
  
  /* Menu Utama (Terkini, Arsip, dll) */
  .pkp_structure_head .pkp_navigation_primary_wrapper .pkp_nav_list > li > a,
  .pkp_structure_head .pkp_navigation_search_wrapper a {
    color: #ffffff !important; /* Teks putih terang di atas latar biru footer */
  }

  /* User Menu (Daftar, Login) */
  .pkp_structure_head .pkp_navigation_user_wrapper a,
  .pkp_structure_head .pkp_navigation_user_wrapper .pkp_nav_list > li > a,
  .pkp_structure_head .pkp_navigation_user_wrapper .pkp_nav_list a {
    color: var(--color-primary) !important; /* Teks gelap tanpa latar */
  }

  .pkp_structure_head .pkp_navigation_primary_wrapper .pkp_nav_list > li > a:hover,
  .pkp_structure_head .pkp_navigation_search_wrapper a:hover {
    color: var(--color-secondary-fixed) !important;
  }
  
  .pkp_structure_head .pkp_navigation_user_wrapper a:hover,
  .pkp_structure_head .pkp_navigation_user_wrapper .pkp_nav_list > li > a:hover,
  .pkp_structure_head .pkp_navigation_user_wrapper .pkp_nav_list a:hover {
    color: var(--color-secondary) !important;
  }
  
  /* Submenu items tetap putih karena latarnya sekarang biru */
  .pkp_structure_head .pkp_navigation_primary_wrapper .pkp_nav_list ul {
    background-color: var(--color-primary-container) !important;
  }
  
  .pkp_structure_head .pkp_navigation_user_wrapper ul {
    background-color: transparent !important;
  }
  
  .pkp_structure_head .pkp_navigation_primary_wrapper .pkp_nav_list ul a {
    color: #ffffff !important;
  }
  
  .pkp_structure_head .pkp_navigation_primary_wrapper .pkp_nav_list ul a:hover {
    color: var(--color-secondary-fixed) !important;
  }
}

/* Main Content Area */
.pkp_structure_content {
  padding-top: var(--spacing-mobile);
}

.pkp_structure_main h1 {
  font-family: var(--font-family-serif);
  font-size: 32px;
  font-weight: 700;
  color: var(--color-primary);
  margin-top: 0;
  margin-bottom: var(--spacing-gutter);
  border-bottom: 1px solid var(--color-surface-container-high);
  padding-bottom: var(--spacing-base);
}

/* Breadcrumbs */
.cmp_breadcrumbs ol {
  font-family: var(--font-family-sans);
  color: var(--color-on-surface-variant);
}

.cmp_breadcrumbs a {
  color: var(--color-secondary) !important;
}

.cmp_breadcrumbs .separator {
  color: var(--color-outline-variant);
}

/* Footer */
.pkp_structure_footer_wrapper {
  background-color: var(--color-primary-container) !important;
  color: var(--color-on-primary-container) !important;
  border-top: none;
}

.modern_footer_grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-desktop);
  padding-top: var(--spacing-section);
  padding-bottom: var(--spacing-desktop);
}

@media (min-width: 768px) {
  .modern_footer_grid {
    grid-template-columns: 2fr 1fr 1fr;
  }
}

.pkp_structure_footer_wrapper a {
  color: var(--color-secondary-container) !important;
}

.pkp_structure_footer_wrapper a:hover {
  color: var(--color-secondary-fixed) !important;
}

/* Memaksa semua teks biasa di footer menjadi putih */
.pkp_structure_footer * {
    color: inherit;
}

/* ==========================================================================
   Site Index / Journal List
   ========================================================================== */

.page_index_site {
  padding-top: var(--spacing-desktop);
  padding-bottom: var(--spacing-section);
}

.page_index_site .journals h2 {
  font-family: var(--font-family-serif);
  color: var(--color-primary);
  border-bottom: 2px solid var(--color-surface-container-high);
  padding-bottom: var(--spacing-mobile);
  margin-bottom: var(--spacing-gutter);
  font-size: 28px;
}

.page_index_site .journals ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--spacing-gutter);
  grid-template-columns: 1fr;
}

@media (min-width: 768px) {
  .page_index_site .journals ul {
    grid-template-columns: repeat(2, 1fr);
  }
}

.page_index_site .journals li {
  background-color: var(--color-surface-container-lowest);
  border: var(--border-level-1);
  border-radius: var(--radius-lg);
  padding: var(--spacing-gutter);
  transition: box-shadow 0.3s ease, transform 0.2s ease;
  box-shadow: 0 2px 8px rgba(0,0,0,0.03);
}

.page_index_site .journals li:hover {
  box-shadow: var(--shadow-level-2);
  transform: translateY(-2px);
  border-color: var(--color-outline-variant);
}

.page_index_site .journals .body h3 {
  margin-top: 0;
  margin-bottom: var(--spacing-mobile);
  font-size: 20px;
  line-height: 1.4;
}

.page_index_site .journals .body h3 a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

.page_index_site .journals .body h3 a:hover {
  color: var(--color-secondary);
}

.page_index_site .journals .links {
  display: flex;
  gap: var(--spacing-mobile);
  list-style: none;
  padding: 0;
  margin: 0;
  margin-top: var(--spacing-mobile);
  border-top: 1px solid var(--color-surface-container-highest);
  padding-top: var(--spacing-mobile);
}

.page_index_site .journals .links li a {
  display: inline-block;
  font-size: 14px;
  font-weight: 600;
  color: var(--color-secondary);
}

.page_index_site .journals .links li a:hover {
  color: var(--color-on-secondary-container);
  text-decoration: underline;
}