/* ==========================================================================
   HrshForPPL Authentic Design System & Styling
   Hyper-V Enterprise Lab Documentation & Learning Portal
   ========================================================================== */

:root {
  /* GFG Core Color Palette */
  --gfg-green: #2f8d46;
  --gfg-green-hover: #267338;
  --gfg-green-dark: #1b5e20;
  --gfg-green-light: #e8f5e9;
  --gfg-green-subtle: #f1f8f3;
  --gfg-green-border: #a5d6a7;
  --gfg-accent: #0f9d58;
  --gfg-accent-gold: #f59e0b;
  --gfg-blue: #0284c7;
  --gfg-blue-light: #e0f2fe;
  --gfg-red: #ef4444;
  --gfg-red-light: #fee2e2;
  --gfg-purple: #8b5cf6;
  --gfg-purple-light: #f3e8ff;

  /* Neutral Color Palette (Light Mode) */
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-tertiary: #edf2f7;
  --bg-card: #ffffff;
  --bg-sidebar: #ffffff;
  --border-color: #e2e8f0;
  --border-subtle: #f1f5f9;
  --text-primary: #1e293b;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-light: #94a3b8;

  /* Code Block Palette */
  --code-bg: #1e1e1e;
  --code-header-bg: #2d2d2d;
  --code-text: #d4d4d4;
  --code-border: #3c3c3c;
  --inline-code-bg: #f1f5f9;
  --inline-code-text: #c7254e;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Dimensions & Spacing */
  --header-height: 64px;
  --subnav-height: 44px;
  --sidebar-left-width: 280px;
  --sidebar-right-width: 260px;
  --content-max-width: 900px;
  --border-radius: 8px;
  --border-radius-lg: 12px;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Consolas', 'Courier New', monospace;
}

/* Dark Theme Variables */
[data-theme="dark"] {
  --bg-primary: #0f172a;
  --bg-secondary: #1e293b;
  --bg-tertiary: #334155;
  --bg-card: #1e293b;
  --bg-sidebar: #0f172a;
  --border-color: #334155;
  --border-subtle: #1e293b;
  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-light: #64748b;

  --gfg-green-light: rgba(47, 141, 70, 0.2);
  --gfg-green-subtle: rgba(47, 141, 70, 0.1);
  --gfg-green-border: #2f8d46;
  --gfg-blue-light: rgba(2, 132, 199, 0.2);
  --gfg-red-light: rgba(239, 68, 68, 0.2);
  --gfg-purple-light: rgba(139, 92, 246, 0.2);

  --code-bg: #090d16;
  --code-header-bg: #131b2e;
  --code-border: #1e293b;
  --inline-code-bg: #1e293b;
  --inline-code-text: #f43f5e;
}

/* Reset & Base Setup */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.65;
  transition: background-color 0.25s ease, color 0.25s ease;
  overflow-x: hidden;
}

/* Reading Progress Bar */
#reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--gfg-green), #48bb78, #38bdf8);
  width: 0%;
  z-index: 1000;
  transition: width 0.1s ease-out;
}

/* ==========================================================================
   Header Navigation Bar (GFG Style)
   ========================================================================== */
.gfg-header {
  position: sticky;
  top: 0;
  z-index: 900;
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  height: var(--header-height);
  display: flex;
  align-items: center;
}

.header-container {
  width: 100%;
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 20px;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.3rem;
  cursor: pointer;
  padding: 6px;
  border-radius: 6px;
}
.mobile-menu-toggle:hover {
  background-color: var(--bg-secondary);
}

.gfg-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  text-decoration: none;
  font-weight: 800;
  font-size: 1.25rem;
  color: var(--gfg-green);
  letter-spacing: -0.5px;
}

.gfg-logo-badge {
  background: linear-gradient(135deg, var(--gfg-green), var(--gfg-green-dark));
  color: #ffffff;
  padding: 4px 8px;
  border-radius: 6px;
  font-family: var(--font-mono);
  font-weight: 900;
  font-size: 1rem;
  box-shadow: 0 2px 4px rgba(47, 141, 70, 0.3);
}

.gfg-logo-text {
  color: var(--text-primary);
  display: flex;
  flex-direction: column;
  line-height: 1.1;
}

.gfg-logo-text .brand-title {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--gfg-green);
}

.gfg-logo-text .brand-sub {
  font-size: 0.68rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Nav Links */
.header-nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  padding: 8px 14px;
  border-radius: 6px;
  font-weight: 500;
  font-size: 0.92rem;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  gap: 6px;
}

.nav-link:hover {
  color: var(--gfg-green);
  background-color: var(--gfg-green-subtle);
}

.nav-link.active {
  color: var(--gfg-green);
  background-color: var(--gfg-green-light);
  font-weight: 600;
}

/* Header Right Actions */
.header-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.search-trigger-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 7px 14px;
  border-radius: 20px;
  color: var(--text-muted);
  font-size: 0.88rem;
  cursor: pointer;
  min-width: 220px;
  transition: all 0.2s ease;
}

.search-trigger-btn:hover {
  border-color: var(--gfg-green);
  background-color: var(--bg-primary);
  box-shadow: 0 0 0 3px var(--gfg-green-light);
}

.search-shortcut-key {
  margin-left: auto;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-color);
  font-size: 0.72rem;
  padding: 2px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  color: var(--text-muted);
}

.header-action-btn {
  background: none;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 7px 10px;
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  transition: all 0.2s ease;
}

.header-action-btn:hover {
  color: var(--gfg-green);
  border-color: var(--gfg-green);
  background-color: var(--gfg-green-subtle);
}

.btn-cta-green {
  background-color: var(--gfg-green);
  color: #ffffff !important;
  border: none;
  padding: 8px 16px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.88rem;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s ease;
  box-shadow: 0 2px 6px rgba(47, 141, 70, 0.25);
}

.btn-cta-green:hover {
  background-color: var(--gfg-green-hover);
  box-shadow: 0 4px 10px rgba(47, 141, 70, 0.35);
  transform: translateY(-1px);
}

/* ==========================================================================
   Sub-Navigation / Category Strip (GFG Ribbon)
   ========================================================================== */
.gfg-subnav {
  background-color: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: none;
  -ms-overflow-style: none;
}
.gfg-subnav::-webkit-scrollbar {
  display: none;
}

.subnav-container {
  max-width: 1600px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  height: var(--subnav-height);
}

.subnav-pill {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.83rem;
  font-weight: 500;
  padding: 5px 12px;
  border-radius: 16px;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  transition: all 0.2s ease;
  flex-shrink: 0;
}

.subnav-pill:hover {
  background-color: var(--gfg-green-light);
  color: var(--gfg-green);
  border-color: var(--gfg-green-border);
}

.subnav-pill.active {
  background-color: var(--gfg-green);
  color: #ffffff;
  border-color: var(--gfg-green);
  font-weight: 600;
}

/* ==========================================================================
   Main Layout Container (3 Column Grid)
   ========================================================================== */
.main-wrapper {
  max-width: 1600px;
  margin: 0 auto;
  padding: 24px 20px;
  display: grid;
  grid-template-columns: var(--sidebar-left-width) minmax(0, 1fr) var(--sidebar-right-width);
  gap: 28px;
  align-items: start;
}

/* ==========================================================================
   Left Sidebar: Course Index / Module Navigator
   ========================================================================== */
.sidebar-left {
  position: sticky;
  top: calc(var(--header-height) + 20px);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 16px;
  max-height: calc(100vh - 100px);
  overflow-y: auto;
  box-shadow: var(--shadow-sm);
}

.sidebar-header-box {
  padding-bottom: 12px;
  margin-bottom: 12px;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-title {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar-badge-count {
  background-color: var(--gfg-green-light);
  color: var(--gfg-green);
  font-size: 0.75rem;
  padding: 2px 8px;
  border-radius: 12px;
  font-weight: 700;
}

.module-group {
  margin-bottom: 16px;
}

.module-group-title {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--text-muted);
  margin-bottom: 8px;
  padding: 4px 8px;
}

.module-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.module-item a {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 10px;
  border-radius: 6px;
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.86rem;
  font-weight: 500;
  transition: all 0.15s ease;
  line-height: 1.35;
}

.module-item a:hover {
  background-color: var(--gfg-green-subtle);
  color: var(--gfg-green);
  transform: translateX(3px);
}

.module-item.active a {
  background-color: var(--gfg-green-light);
  color: var(--gfg-green);
  font-weight: 600;
  border-left: 3px solid var(--gfg-green);
}

.module-icon {
  font-size: 1rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  flex-shrink: 0;
}

.status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  margin-left: auto;
  background-color: var(--border-color);
}
.status-dot.completed {
  background-color: var(--gfg-green);
}

/* ==========================================================================
   Center Article Area (GFG Article Anatomy)
   ========================================================================== */
.article-container {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 36px 40px;
  box-shadow: var(--shadow-sm);
  min-width: 0;
}

/* Breadcrumbs */
.gfg-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.gfg-breadcrumb a {
  color: var(--text-muted);
  text-decoration: none;
  transition: color 0.15s ease;
}

.gfg-breadcrumb a:hover {
  color: var(--gfg-green);
}

.gfg-breadcrumb .separator {
  color: var(--border-color);
}

.gfg-breadcrumb .current {
  color: var(--gfg-green);
  font-weight: 600;
}

/* Article Title */
.article-title {
  font-size: 2.1rem;
  font-weight: 800;
  line-height: 1.25;
  color: var(--text-primary);
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}

/* Article Meta Strip */
.article-meta-strip {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 12px;
  padding: 12px 0;
  margin-bottom: 24px;
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  font-size: 0.84rem;
  color: var(--text-muted);
}

.meta-left {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
}

.meta-item {
  display: flex;
  align-items: center;
  gap: 6px;
}

.meta-item i, .meta-item svg {
  color: var(--gfg-green);
}

.difficulty-badge {
  padding: 2px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 700;
}
.difficulty-badge.easy { background: #dcfce7; color: #166534; }
.difficulty-badge.medium { background: #fef3c7; color: #92400e; }
.difficulty-badge.hard { background: #fee2e2; color: #991b1b; }

.meta-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.meta-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 5px 10px;
  border-radius: 6px;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.15s ease;
}

.meta-btn:hover {
  background: var(--gfg-green-light);
  color: var(--gfg-green);
  border-color: var(--gfg-green-border);
}

/* Article Typography */
.article-body h2 {
  font-size: 1.45rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 36px;
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--gfg-green-light);
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
}

.article-body h2::before {
  content: "";
  display: inline-block;
  width: 4px;
  height: 22px;
  background-color: var(--gfg-green);
  border-radius: 2px;
}

.article-body h3 {
  font-size: 1.18rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-top: 24px;
  margin-bottom: 12px;
}

.article-body p {
  margin-bottom: 16px;
  color: var(--text-secondary);
  font-size: 1rem;
}

.article-body ul, .article-body ol {
  margin-bottom: 18px;
  padding-left: 24px;
  color: var(--text-secondary);
}

.article-body li {
  margin-bottom: 6px;
}

.article-body strong {
  color: var(--text-primary);
  font-weight: 600;
}

.article-body code {
  font-family: var(--font-mono);
  background-color: var(--inline-code-bg);
  color: var(--inline-code-text);
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.88em;
}

/* ==========================================================================
   GFG Callout Boxes (Alerts & Notes)
   ========================================================================== */
.gfg-callout {
  border-radius: var(--border-radius);
  padding: 16px 20px;
  margin: 22px 0;
  border-left: 4px solid var(--gfg-green);
  background-color: var(--gfg-green-subtle);
  display: flex;
  gap: 14px;
  align-items: flex-start;
}

.gfg-callout-icon {
  font-size: 1.3rem;
  line-height: 1;
  flex-shrink: 0;
  margin-top: 2px;
}

.gfg-callout-content {
  font-size: 0.94rem;
  color: var(--text-secondary);
  flex-grow: 1;
}

.gfg-callout-content strong {
  display: block;
  font-size: 0.98rem;
  margin-bottom: 4px;
  color: var(--text-primary);
}

.gfg-callout.note {
  border-left-color: var(--gfg-blue);
  background-color: var(--gfg-blue-light);
}
.gfg-callout.note .gfg-callout-icon { color: var(--gfg-blue); }

.gfg-callout.warning {
  border-left-color: var(--gfg-red);
  background-color: var(--gfg-red-light);
}
.gfg-callout.warning .gfg-callout-icon { color: var(--gfg-red); }

.gfg-callout.tip {
  border-left-color: var(--gfg-green);
  background-color: var(--gfg-green-subtle);
}
.gfg-callout.tip .gfg-callout-icon { color: var(--gfg-green); }

.gfg-callout.insight {
  border-left-color: var(--gfg-purple);
  background-color: var(--gfg-purple-light);
}
.gfg-callout.insight .gfg-callout-icon { color: var(--gfg-purple); }

/* ==========================================================================
   GFG Code Snippet Box (Multi-tab + Copy + Line numbers)
   ========================================================================== */
.code-container {
  background-color: var(--code-bg);
  border: 1px solid var(--code-border);
  border-radius: var(--border-radius);
  margin: 22px 0;
  overflow: hidden;
  box-shadow: var(--shadow-md);
}

.code-header {
  background-color: var(--code-header-bg);
  padding: 8px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--code-border);
}

.code-tabs {
  display: flex;
  gap: 6px;
}

.code-tab-btn {
  background: none;
  border: none;
  color: #94a3b8;
  font-family: var(--font-sans);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.code-tab-btn:hover {
  color: #ffffff;
  background-color: rgba(255, 255, 255, 0.1);
}

.code-tab-btn.active {
  color: #ffffff;
  background-color: var(--gfg-green);
}

.code-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.code-action-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #cbd5e1;
  font-size: 0.78rem;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 5px;
  transition: all 0.15s ease;
}

.code-action-btn:hover {
  background-color: var(--gfg-green);
  color: #ffffff;
  border-color: var(--gfg-green);
}

.code-body {
  padding: 16px;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.88rem;
  line-height: 1.6;
  color: var(--code-text);
}

.code-body pre {
  margin: 0;
  tab-size: 4;
}

/* Syntax Highlighting Colors */
.token-keyword { color: #569cd6; font-weight: 600; }
.token-cmdlet { color: #dcdcaa; font-weight: 600; }
.token-param { color: #9cdcfe; }
.token-string { color: #ce9178; }
.token-comment { color: #6a9955; font-style: italic; }
.token-variable { color: #4ec9b0; }
.token-number { color: #b5cea8; }

/* ==========================================================================
   GFG Comparison Tables
   ========================================================================== */
.table-responsive {
  overflow-x: auto;
  margin: 24px 0;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
}

.gfg-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.92rem;
  text-align: left;
}

.gfg-table th {
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  font-weight: 700;
  padding: 12px 16px;
  border-bottom: 2px solid var(--gfg-green);
}

.gfg-table td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
  vertical-align: top;
}

.gfg-table tr:last-child td {
  border-bottom: none;
}

.gfg-table tr:hover td {
  background-color: var(--gfg-green-subtle);
}

/* ==========================================================================
   Right Sidebar: Table of Contents & Interactive Widgets
   ========================================================================== */
.sidebar-right {
  position: sticky;
  top: calc(var(--header-height) + 20px);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.widget-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-lg);
  padding: 18px;
  box-shadow: var(--shadow-sm);
}

.widget-title {
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 12px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 8px;
}

.widget-title svg, .widget-title i {
  color: var(--gfg-green);
}

/* TOC Items */
.toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.toc-link {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.82rem;
  line-height: 1.4;
  padding: 4px 8px;
  border-radius: 4px;
  display: block;
  transition: all 0.15s ease;
  border-left: 2px solid transparent;
}

.toc-link:hover {
  color: var(--gfg-green);
  background-color: var(--gfg-green-subtle);
}

.toc-link.active {
  color: var(--gfg-green);
  font-weight: 600;
  border-left-color: var(--gfg-green);
  background-color: var(--gfg-green-light);
}

/* Progress Tracker Widget */
.progress-bar-container {
  height: 8px;
  background-color: var(--bg-tertiary);
  border-radius: 4px;
  overflow: hidden;
  margin: 10px 0 14px;
}

.progress-bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--gfg-green), #48bb78);
  width: 40%;
  transition: width 0.3s ease;
}

.progress-stats {
  display: flex;
  justify-content: space-between;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 600;
}

/* ==========================================================================
   Article Footer Navigation & Pagers
   ========================================================================== */
.article-pager {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--border-color);
}

.pager-btn {
  display: flex;
  flex-direction: column;
  padding: 14px 18px;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  text-decoration: none;
  background-color: var(--bg-secondary);
  transition: all 0.2s ease;
}

.pager-btn:hover {
  border-color: var(--gfg-green);
  background-color: var(--gfg-green-subtle);
  transform: translateY(-2px);
}

.pager-btn.next {
  text-align: right;
}

.pager-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 700;
  color: var(--text-muted);
  margin-bottom: 4px;
}

.pager-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* ==========================================================================
   GFG Discussion / Comment Section Mockup
   ========================================================================== */
.discussion-section {
  margin-top: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--border-color);
}

.discussion-header {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.comment-input-box {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 14px;
  margin-bottom: 24px;
}

.comment-textarea {
  width: 100%;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 10px;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  resize: vertical;
  min-height: 70px;
  outline: none;
}

.comment-textarea:focus {
  border-color: var(--gfg-green);
  box-shadow: 0 0 0 3px var(--gfg-green-light);
}

.comment-actions-bar {
  display: flex;
  justify-content: flex-end;
  margin-top: 10px;
}

.comment-card {
  border-bottom: 1px solid var(--border-subtle);
  padding: 14px 0;
}

.comment-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background-color: var(--gfg-green-light);
  color: var(--gfg-green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
}

.user-name {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

.comment-time {
  font-size: 0.76rem;
  color: var(--text-muted);
}

.comment-text {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* ==========================================================================
   GFG Footer (Authentic Multi-column)
   ========================================================================== */
.gfg-footer {
  background-color: var(--bg-primary);
  border-top: 1px solid var(--border-color);
  margin-top: 60px;
  padding: 48px 20px 24px;
}

.footer-container {
  max-width: 1600px;
  margin: 0 auto;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: 40px;
  margin-bottom: 36px;
}

.footer-brand h4 {
  font-size: 1.3rem;
  color: var(--gfg-green);
  font-weight: 800;
  margin-bottom: 10px;
}

.footer-brand p {
  font-size: 0.88rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 360px;
}

.footer-col h5 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 14px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.85rem;
  transition: color 0.15s ease;
}

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

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 12px;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */
@media (max-width: 1200px) {
  .main-wrapper {
    grid-template-columns: var(--sidebar-left-width) minmax(0, 1fr);
  }
  .sidebar-right {
    display: none;
  }
}

@media (max-width: 860px) {
  .main-wrapper {
    grid-template-columns: 1fr;
    padding: 16px 12px;
  }
  .sidebar-left {
    display: none;
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 290px;
    height: calc(100vh - var(--header-height));
    z-index: 950;
    border-radius: 0;
    border-right: 1px solid var(--border-color);
    box-shadow: var(--shadow-xl);
  }
  .sidebar-left.open {
    display: block;
  }
  .mobile-menu-toggle {
    display: block;
  }
  .header-nav {
    display: none;
  }
  .search-trigger-btn {
    min-width: 140px;
  }
  .article-container {
    padding: 24px 18px;
  }
  .article-title {
    font-size: 1.6rem;
  }
  .footer-top {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .article-pager {
    grid-template-columns: 1fr;
  }
}