/* ==========================================================================
   DOKUMENTASI WEBSITE DESA SUKA DAMAI
   style.css — Global Design System
   Author: Dokumentasi Desa Suka Damai
   Version: 1.0.0
   ========================================================================== */

/* ==========================================================================
   LAYER 1: CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ========================================================================== */
:root {
  /* --- Color Palette --- */
  --color-primary:        #0D6EFD;
  --color-primary-hover:  #0a58ca;
  --color-primary-light:  #e7f0ff;
  --color-primary-subtle: #cfe2ff;

  --color-success:        #198754;
  --color-success-light:  #d1e7dd;

  --color-warning:        #FFC107;
  --color-warning-light:  #fff3cd;

  --color-danger:         #DC3545;
  --color-danger-light:   #f8d7da;

  --color-info:           #0dcaf0;
  --color-info-light:     #cff4fc;

  --color-dark:           #212529;
  --color-dark-soft:      #343a40;
  --color-muted:          #6c757d;
  --color-light:          #F8F9FA;
  --color-white:          #ffffff;

  --color-border:         #DEE2E6;
  --color-border-soft:    #e9ecef;

  /* --- Sidebar & Layout --- */
  --sidebar-width:        280px;
  --toc-width:            248px;
  --navbar-height:        64px;

  /* --- Typography --- */
  --font-sans:  'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono:  'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;

  --font-size-xs:   0.75rem;    /* 12px */
  --font-size-sm:   0.875rem;   /* 14px */
  --font-size-base: 0.9375rem;  /* 15px */
  --font-size-md:   1rem;       /* 16px */
  --font-size-lg:   1.125rem;   /* 18px */
  --font-size-xl:   1.25rem;    /* 20px */
  --font-size-2xl:  1.5rem;     /* 24px */
  --font-size-3xl:  1.875rem;   /* 30px */
  --font-size-4xl:  2.25rem;    /* 36px */

  /* --- Border Radius --- */
  --radius-sm:   6px;
  --radius-md:   12px;
  --radius-lg:   16px;
  --radius-xl:   20px;
  --radius-full: 9999px;

  /* --- Shadows --- */
  --shadow-xs:  0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm:  0 2px 8px rgba(0,0,0,0.06);
  --shadow-md:  0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg:  0 8px 32px rgba(0,0,0,0.10);
  --shadow-xl:  0 16px 48px rgba(0,0,0,0.12);

  /* --- Spacing Scale --- */
  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.25rem;
  --space-6:  1.5rem;
  --space-8:  2rem;
  --space-10: 2.5rem;
  --space-12: 3rem;
  --space-16: 4rem;

  /* --- Transitions --- */
  --transition-fast:   150ms ease;
  --transition-base:   250ms ease;
  --transition-slow:   350ms ease;

  /* --- Z-index Scale --- */
  --z-sidebar:  100;
  --z-navbar:   200;
  --z-overlay:  300;
  --z-modal:    400;
  --z-tooltip:  500;
}

/* ==========================================================================
   LAYER 2: GOOGLE FONTS IMPORT
   ========================================================================== */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500&display=swap');

/* ==========================================================================
   LAYER 3: RESET & BASE STYLES
   ========================================================================== */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-sans);
  font-size: var(--font-size-base);
  font-weight: 400;
  line-height: 1.7;
  color: var(--color-dark);
  background-color: var(--color-white);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Remove default list styles */
ul, ol {
  list-style: none;
}

/* Links */
a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-primary-hover);
  text-decoration: none;
}

/* Images */
img {
  max-width: 100%;
  height: auto;
  display: block;
}

/* Focus visible */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* ==========================================================================
   LAYER 4: TYPOGRAPHY SCALE
   ========================================================================== */

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  font-weight: 700;
  line-height: 1.25;
  color: var(--color-dark);
}

h1 { font-size: var(--font-size-4xl); font-weight: 800; }
h2 { font-size: var(--font-size-3xl); font-weight: 700; }
h3 { font-size: var(--font-size-2xl); font-weight: 600; }
h4 { font-size: var(--font-size-xl);  font-weight: 600; }
h5 { font-size: var(--font-size-lg);  font-weight: 600; }
h6 { font-size: var(--font-size-md);  font-weight: 600; }

/* Paragraphs */
p {
  margin-bottom: var(--space-4);
  line-height: 1.75;
}

p:last-child { margin-bottom: 0; }

/* Lead text */
.lead {
  font-size: var(--font-size-lg);
  font-weight: 400;
  color: var(--color-muted);
  line-height: 1.65;
}

/* Code */
code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  color: #d63384;
  background-color: #f8f4f7;
  padding: 0.15em 0.4em;
  border-radius: var(--radius-sm);
  word-break: break-word;
}

pre {
  background-color: var(--color-dark);
  color: #e9ecef;
  padding: var(--space-6);
  border-radius: var(--radius-md);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: var(--font-size-sm);
  line-height: 1.6;
  margin-bottom: var(--space-6);
}

pre code {
  color: inherit;
  background: none;
  padding: 0;
  border-radius: 0;
  font-size: inherit;
}

/* Strong & em */
strong { font-weight: 700; }
em { font-style: italic; }

/* Blockquote */
blockquote {
  border-left: 4px solid var(--color-primary);
  padding: var(--space-4) var(--space-6);
  background-color: var(--color-primary-light);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin: var(--space-6) 0;
  font-style: italic;
  color: var(--color-dark-soft);
}

/* ==========================================================================
   LAYER 5: SKIP LINK (ACCESSIBILITY)
   ========================================================================== */
.skip-link {
  position: fixed;
  top: -100%;
  left: var(--space-4);
  z-index: 9999;
  background: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-3) var(--space-6);
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  font-weight: 600;
  font-size: var(--font-size-sm);
  transition: top var(--transition-base);
}

.skip-link:focus {
  top: 0;
  color: var(--color-white);
}

/* ==========================================================================
   LAYER 6: TOP NAVBAR
   ========================================================================== */
.doc-navbar {
  position: sticky;
  top: 0;
  z-index: var(--z-navbar);
  height: var(--navbar-height);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  padding: 0 var(--space-6);
  gap: var(--space-4);
  box-shadow: var(--shadow-xs);
}

.doc-navbar .navbar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 800;
  font-size: var(--font-size-md);
  color: var(--color-dark);
  white-space: nowrap;
  text-decoration: none;
}

.doc-navbar .brand-logo {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--color-primary) 0%, #0a58ca 100%);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: var(--font-size-md);
  font-weight: 800;
  letter-spacing: -0.5px;
  flex-shrink: 0;
}

.doc-navbar .brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.doc-navbar .brand-title {
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-dark);
}

.doc-navbar .brand-subtitle {
  font-size: var(--font-size-xs);
  font-weight: 400;
  color: var(--color-muted);
}

/* Search in navbar */
.navbar-search {
  flex: 1;
  max-width: 400px;
  margin: 0 auto;
  position: relative;
}

.navbar-search .search-input {
  width: 100%;
  height: 40px;
  padding: 0 var(--space-4) 0 2.5rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-family: var(--font-sans);
  background: var(--color-light);
  color: var(--color-dark);
  transition: all var(--transition-base);
  outline: none;
}

.navbar-search .search-input:focus {
  border-color: var(--color-primary);
  background: var(--color-white);
  box-shadow: 0 0 0 3px rgba(13,110,253,0.15);
}

.navbar-search .search-input::placeholder {
  color: var(--color-muted);
}

.navbar-search .search-icon {
  position: absolute;
  left: 0.875rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-muted);
  font-size: var(--font-size-sm);
  pointer-events: none;
}

/* Navbar right side links */
.navbar-links {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  flex-shrink: 0;
}

.navbar-links .nav-link-btn {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-muted);
  transition: all var(--transition-fast);
  border: none;
  background: none;
  cursor: pointer;
  text-decoration: none;
}

.navbar-links .nav-link-btn:hover {
  color: var(--color-dark);
  background: var(--color-light);
}

/* Sidebar toggle (mobile) */
.sidebar-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: none;
  color: var(--color-dark);
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.sidebar-toggle:hover {
  background: var(--color-light);
}

/* ==========================================================================
   LAYER 7: PAGE LAYOUT WRAPPER
   ========================================================================== */
.doc-layout {
  display: flex;
  min-height: calc(100vh - var(--navbar-height));
}

/* ==========================================================================
   LAYER 8: LEFT SIDEBAR
   ========================================================================== */
.doc-sidebar {
  width: var(--sidebar-width);
  min-width: var(--sidebar-width);
  background: var(--color-white);
  border-right: 1px solid var(--color-border);
  position: sticky;
  top: var(--navbar-height);
  height: calc(100vh - var(--navbar-height));
  overflow-y: auto;
  overflow-x: hidden;
  flex-shrink: 0;
  padding: var(--space-6) 0;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border) transparent;
}

.doc-sidebar::-webkit-scrollbar {
  width: 4px;
}
.doc-sidebar::-webkit-scrollbar-track {
  background: transparent;
}
.doc-sidebar::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: var(--radius-full);
}

/* Sidebar navigation group */
.sidebar-nav-group {
  margin-bottom: var(--space-2);
}

.sidebar-group-label {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-2) var(--space-6);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  cursor: pointer;
  user-select: none;
  border: none;
  background: none;
  width: 100%;
  text-align: left;
  transition: color var(--transition-fast);
}

.sidebar-group-label:hover {
  color: var(--color-dark);
}

.sidebar-group-label .group-icon {
  font-size: var(--font-size-sm);
  opacity: 0.5;
  transition: transform var(--transition-base);
}

.sidebar-group-label[aria-expanded="false"] .group-icon {
  transform: rotate(-90deg);
}

/* Sidebar phase badge */
.sidebar-phase-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border-radius: var(--radius-full);
  background: var(--color-primary);
  color: white;
  font-size: 10px;
  font-weight: 700;
  flex-shrink: 0;
}

/* Sidebar nav items */
.sidebar-nav {
  padding: 0;
  margin: 0;
}

.sidebar-nav-item {
  display: block;
}

.sidebar-nav-link {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 0.4rem var(--space-6);
  font-size: var(--font-size-sm);
  font-weight: 400;
  color: var(--color-muted);
  border-right: 3px solid transparent;
  transition: all var(--transition-fast);
  text-decoration: none;
  line-height: 1.4;
}

.sidebar-nav-link:hover {
  color: var(--color-primary);
  background: var(--color-primary-light);
  text-decoration: none;
}

.sidebar-nav-link.active {
  color: var(--color-primary);
  font-weight: 600;
  background: var(--color-primary-light);
  border-right-color: var(--color-primary);
}

.sidebar-nav-link .nav-icon {
  font-size: 1rem;
  flex-shrink: 0;
  opacity: 0.6;
}

.sidebar-nav-link.active .nav-icon,
.sidebar-nav-link:hover .nav-icon {
  opacity: 1;
}

/* Sidebar divider */
.sidebar-divider {
  height: 1px;
  background: var(--color-border-soft);
  margin: var(--space-4) var(--space-6);
}

/* Sidebar heading for non-collapsible groups */
.sidebar-heading {
  padding: var(--space-3) var(--space-6) var(--space-1);
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
}

/* ==========================================================================
   LAYER 9: MAIN CONTENT AREA
   ========================================================================== */
.doc-content {
  flex: 1;
  min-width: 0;
  padding: var(--space-10) var(--space-10);
  max-width: 860px;
}

/* ==========================================================================
   LAYER 10: RIGHT TABLE OF CONTENTS
   ========================================================================== */
.doc-toc {
  width: var(--toc-width);
  min-width: var(--toc-width);
  flex-shrink: 0;
  padding: var(--space-10) var(--space-6) var(--space-10) 0;
}

.toc-inner {
  position: sticky;
  top: calc(var(--navbar-height) + var(--space-6));
  max-height: calc(100vh - var(--navbar-height) - var(--space-12));
  overflow-y: auto;
  overflow-x: hidden;
  scrollbar-width: none;
}

.toc-inner::-webkit-scrollbar {
  display: none;
}

.toc-title {
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-muted);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-2);
  border-bottom: 1px solid var(--color-border-soft);
}

.toc-nav {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.toc-nav-link {
  display: block;
  font-size: var(--font-size-sm);
  color: var(--color-muted);
  padding: 0.3rem 0;
  padding-left: 0;
  border-left: 2px solid transparent;
  padding-left: var(--space-3);
  margin-left: -var(--space-3);
  text-decoration: none;
  line-height: 1.4;
  transition: all var(--transition-fast);
}

.toc-nav-link:hover {
  color: var(--color-primary);
  text-decoration: none;
}

.toc-nav-link.active {
  color: var(--color-primary);
  font-weight: 600;
  border-left-color: var(--color-primary);
}

.toc-nav-link.toc-h3 {
  padding-left: calc(var(--space-3) + var(--space-4));
  font-size: var(--font-size-xs);
}

/* ==========================================================================
   LAYER 11: FOOTER
   ========================================================================== */
.doc-footer {
  background: var(--color-light);
  border-top: 1px solid var(--color-border);
  padding: var(--space-8) var(--space-6);
  text-align: center;
}

.doc-footer-inner {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer-brand {
  font-weight: 700;
  color: var(--color-dark);
  font-size: var(--font-size-sm);
}

.footer-links {
  display: flex;
  gap: var(--space-6);
}

.footer-links a {
  font-size: var(--font-size-sm);
  color: var(--color-muted);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-primary);
}

.footer-copy {
  font-size: var(--font-size-xs);
  color: var(--color-muted);
  width: 100%;
  text-align: center;
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border-soft);
  margin-top: var(--space-4);
}

/* ==========================================================================
   LAYER 12: UTILITY CLASSES
   ========================================================================== */
.text-primary   { color: var(--color-primary) !important; }
.text-muted     { color: var(--color-muted) !important; }
.text-dark      { color: var(--color-dark) !important; }
.text-success   { color: var(--color-success) !important; }
.text-warning   { color: var(--color-warning) !important; }
.text-danger    { color: var(--color-danger) !important; }

.bg-light-custom { background: var(--color-light); }
.bg-primary-subtle { background: var(--color-primary-light); }

.font-mono { font-family: var(--font-mono); }
.font-weight-500 { font-weight: 500; }
.font-weight-600 { font-weight: 600; }
.font-weight-700 { font-weight: 700; }
.font-weight-800 { font-weight: 800; }

.rounded-custom { border-radius: var(--radius-md); }
.shadow-custom  { box-shadow: var(--shadow-md); }

/* ==========================================================================
   LAYER 13: BOOTSTRAP OVERRIDES
   ========================================================================== */
/* Override Bootstrap defaults for better documentation aesthetics */

.btn-primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  border-radius: var(--radius-md);
  font-weight: 600;
  transition: all var(--transition-base);
}

.btn-primary:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(13,110,253,0.3);
}

.btn-outline-primary {
  border-radius: var(--radius-md);
  font-weight: 600;
}

.badge {
  border-radius: var(--radius-full);
  font-weight: 600;
  letter-spacing: 0.02em;
  font-size: 0.75em;
}

.alert {
  border-radius: var(--radius-md);
  border-left-width: 4px;
  border-top: none;
  border-right: none;
  border-bottom: none;
  padding: var(--space-4) var(--space-5);
}

.alert-primary {
  background: var(--color-primary-light);
  border-color: var(--color-primary);
  color: #084298;
}

.alert-success {
  background: var(--color-success-light);
  border-color: var(--color-success);
  color: #0a3622;
}

.alert-warning {
  background: var(--color-warning-light);
  border-color: var(--color-warning);
  color: #664d03;
}

.alert-danger {
  background: var(--color-danger-light);
  border-color: var(--color-danger);
  color: #58151c;
}

.alert-info {
  background: var(--color-info-light);
  border-color: var(--color-info);
  color: #055160;
}

.card {
  border-radius: var(--radius-md);
  border-color: var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.table {
  border-radius: var(--radius-md);
  overflow: hidden;
}

.table > thead > tr > th {
  background: var(--color-light);
  font-weight: 600;
  font-size: var(--font-size-sm);
  color: var(--color-dark-soft);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-bottom: 2px solid var(--color-border);
  padding: var(--space-3) var(--space-4);
}

.table > tbody > tr > td {
  padding: var(--space-3) var(--space-4);
  font-size: var(--font-size-sm);
  vertical-align: middle;
  border-color: var(--color-border-soft);
}

.table-striped > tbody > tr:nth-of-type(odd) > td {
  background-color: rgba(248,249,250,0.8);
}

.accordion-item {
  border-radius: var(--radius-md) !important;
  margin-bottom: var(--space-2);
  border: 1px solid var(--color-border);
  overflow: hidden;
}

.accordion-button {
  font-weight: 600;
  font-size: var(--font-size-sm);
  background: var(--color-light);
}

.accordion-button:not(.collapsed) {
  background: var(--color-primary-light);
  color: var(--color-primary);
  box-shadow: none;
}

.accordion-button:focus {
  box-shadow: none;
  border-color: var(--color-border);
}

.breadcrumb-item + .breadcrumb-item::before {
  content: "›";
  font-size: 1.1em;
  color: var(--color-muted);
}

.breadcrumb-item a {
  color: var(--color-primary);
  font-size: var(--font-size-sm);
}

.breadcrumb-item.active {
  color: var(--color-muted);
  font-size: var(--font-size-sm);
}

/* ==========================================================================
   LAYER 14: BACK TO TOP BUTTON
   ========================================================================== */
.back-to-top {
  position: fixed;
  bottom: var(--space-6);
  right: var(--space-6);
  width: 44px;
  height: 44px;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: var(--z-overlay);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition-base);
  font-size: 1.1rem;
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-xl);
}

/* ==========================================================================
   LAYER 15: SEARCH RESULTS DROPDOWN
   ========================================================================== */
.search-results {
  position: absolute;
  top: calc(100% + var(--space-2));
  left: 0;
  right: 0;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: var(--z-modal);
  max-height: 400px;
  overflow-y: auto;
  display: none;
}

.search-results.show {
  display: block;
}

.search-result-item {
  display: block;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border-soft);
  text-decoration: none;
  transition: background var(--transition-fast);
  cursor: pointer;
}

.search-result-item:hover {
  background: var(--color-light);
  text-decoration: none;
}

.search-result-item:last-child {
  border-bottom: none;
}

.search-result-title {
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-dark);
  display: block;
}

.search-result-section {
  font-size: var(--font-size-xs);
  color: var(--color-muted);
  display: block;
  margin-top: 2px;
}

.search-result-excerpt {
  font-size: var(--font-size-xs);
  color: var(--color-muted);
  display: block;
  margin-top: var(--space-1);
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.search-result-highlight {
  background: #fff3cd;
  border-radius: 2px;
  padding: 0 1px;
}

.search-empty {
  padding: var(--space-6);
  text-align: center;
  color: var(--color-muted);
  font-size: var(--font-size-sm);
}

.search-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.2);
  z-index: calc(var(--z-modal) - 1);
  display: none;
}

.search-overlay.show {
  display: block;
}

/* ==========================================================================
   LAYER 16: LIGHTBOX
   ========================================================================== */
.lightbox-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.92);
  z-index: var(--z-modal);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-base);
  padding: var(--space-6);
}

.lightbox-overlay.active {
  opacity: 1;
  visibility: visible;
}

.lightbox-content {
  position: relative;
  max-width: 90vw;
  max-height: 90vh;
}

.lightbox-content img {
  max-width: 100%;
  max-height: 85vh;
  object-fit: contain;
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-xl);
}

.lightbox-close {
  position: absolute;
  top: -44px;
  right: 0;
  width: 36px;
  height: 36px;
  background: rgba(255,255,255,0.15);
  border: none;
  border-radius: var(--radius-full);
  color: white;
  font-size: 1.2rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--transition-fast);
}

.lightbox-close:hover {
  background: rgba(255,255,255,0.25);
}

.lightbox-caption {
  position: absolute;
  bottom: -40px;
  left: 0;
  right: 0;
  text-align: center;
  color: rgba(255,255,255,0.7);
  font-size: var(--font-size-sm);
}

/* ==========================================================================
   LAYER 17: RESPONSIVE BREAKPOINTS
   ========================================================================== */

/* Large Desktop: Sidebar + TOC visible */
@media (max-width: 1399px) {
  .doc-toc {
    display: none;
  }

  .doc-content {
    max-width: 100%;
  }
}

/* Desktop: Sidebar visible, TOC hidden */
@media (max-width: 1199px) {
  .doc-content {
    padding: var(--space-8) var(--space-8);
  }
}

/* Tablet: Sidebar hidden (offcanvas) */
@media (max-width: 991px) {
  .doc-sidebar {
    display: none;
  }

  .sidebar-toggle {
    display: flex;
  }

  .doc-content {
    padding: var(--space-6) var(--space-6);
  }

  .navbar-search {
    max-width: 300px;
  }
}

/* Mobile */
@media (max-width: 767px) {
  .doc-content {
    padding: var(--space-5) var(--space-4);
  }

  .navbar-search {
    display: none;
  }

  .doc-navbar {
    padding: 0 var(--space-4);
    gap: var(--space-3);
  }

  .doc-navbar .brand-subtitle {
    display: none;
  }

  .footer-links {
    display: none;
  }

  .doc-footer-inner {
    justify-content: center;
  }

  .back-to-top {
    bottom: var(--space-4);
    right: var(--space-4);
    width: 40px;
    height: 40px;
  }
}

/* Extra Small Mobile */
@media (max-width: 575px) {
  :root {
    --font-size-4xl: 1.875rem;
    --font-size-3xl: 1.5rem;
  }

  .doc-content {
    padding: var(--space-4) var(--space-3);
  }
}

/* ==========================================================================
   LAYER 18: PRINT STYLES
   ========================================================================== */
@media print {
  .doc-navbar,
  .doc-sidebar,
  .doc-toc,
  .back-to-top,
  .sidebar-toggle,
  .navbar-search,
  .doc-prev-next,
  .doc-footer {
    display: none !important;
  }

  .doc-layout {
    display: block;
  }

  .doc-content {
    padding: 0;
    max-width: 100%;
    margin: 0;
  }

  .doc-image-placeholder {
    border: 1px solid #ccc;
    page-break-inside: avoid;
  }

  h1, h2, h3, h4 {
    page-break-after: avoid;
  }

  p, blockquote {
    orphans: 3;
    widows: 3;
  }

  a[href]:after {
    content: " (" attr(href) ")";
    font-size: 0.75em;
    color: #666;
  }

  .alert {
    border: 1px solid #ccc;
    page-break-inside: avoid;
  }

  .card {
    box-shadow: none;
    border: 1px solid #ccc;
    page-break-inside: avoid;
  }
}