/*
Theme Name: Web Centrix WP Theme
Theme URI: https://www.webcentrixtechnologies.com
Author: Web Centrix Technologies
Author URI: https://www.webcentrixtechnologies.com
Description: Modern, fast, lightweight and secure tech blog theme created by Web Centrix Technologies.
Version: 3.0
License: GPL-2.0-or-later
License URI: https://www.gnu.org/licenses/gpl-2.0.html
Text Domain: web-centrix-wp
*/

:root {
  /* Color Palette - Web Centrix Sky Blue Theme */
  --gfg-green: #0284c7;
  --gfg-green-hover: #0369a1;
  --gfg-green-light: #e0f2fe;
  --gfg-green-tint: rgba(2, 132, 199, 0.12);
  --wc-blue: #0284c7;
  --wc-blue-hover: #0369a1;
  --wc-blue-light: #e0f2fe;
  --wc-blue-tint: rgba(2, 132, 199, 0.12);
  
  --color-slate-900: #0f172a;
  --color-slate-800: #1e293b;
  --color-slate-700: #334155;
  --color-slate-600: #475569;
  --color-slate-500: #64748b;
  
  --color-gray-50: #fafaf8;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;

  /* Semantic Variables */
  --color-background: #f8fafc;
  --color-surface: #ffffff;
  --color-text: var(--color-slate-900);
  --color-text-muted: var(--color-slate-600);
  --color-primary: var(--gfg-green);
  --color-primary-hover: var(--gfg-green-hover);
  --color-border: #e2e8f0;
  --color-card-border: #e5e7eb;

  /* Typography */
  --font-family-base: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  /* Radii */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.03);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 10px 25px rgba(0, 0, 0, 0.07);
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-background: #0b132b;
    --color-surface: #1c2541;
    --color-text: #f8fafc;
    --color-text-muted: #94a3b8;
    --color-primary: #38bdf8;
    --color-primary-hover: #7dd3fc;
    --color-border: rgba(255, 255, 255, 0.1);
    --color-card-border: rgba(255, 255, 255, 0.08);
    --gfg-green-light: rgba(56, 189, 248, 0.15);
  }
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family-base);
  background-color: var(--color-background);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: inherit;
  text-decoration: none;
  transition: all 0.15s ease;
}

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

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ==========================================================================
   HEADER & TOP NAVIGATION (GEEKSFORGEEKS STYLE)
   ========================================================================== */
.site-header {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: var(--shadow-xs);
}

.header-flex {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 64px;
}

/* BRAND LOGO */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 22px;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.5px;
}

.custom-logo-link {
  display: inline-flex;
  align-items: center;
}

.custom-logo-link img.custom-logo {
  max-height: 38px;
  width: auto;
  object-fit: contain;
  display: block;
}

.brand-icon {
  width: 32px;
  height: 32px;
  background: var(--gfg-green);
  color: #ffffff;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 18px;
}

/* NAVIGATION MENU */
.main-nav {
  display: flex;
  align-items: center;
}

.main-nav ul,
.main-nav .nav-menu {
  display: flex;
  list-style: none;
  gap: 6px;
  align-items: center;
  margin: 0;
  padding: 0;
}

.main-nav ul li,
.main-nav .nav-menu li {
  position: relative;
  list-style: none;
}

.main-nav a,
.main-nav .dropdown-btn {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-text);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: inherit;
  line-height: 1.4;
}

.main-nav a:hover,
.main-nav a.active,
.main-nav .dropdown-btn:hover {
  color: var(--gfg-green);
  background: var(--gfg-green-tint);
}

/* WORDPRESS NATIVE & CUSTOM DROPDOWNS FIX */
.main-nav ul li.menu-item-has-children,
.main-nav ul li.page_item_has_children,
.main-nav .dropdown {
  position: relative;
}

/* DROPDOWN SUBMENU BOX */
.main-nav ul .sub-menu,
.main-nav .dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 220px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 8px 0;
  margin: 0;
  list-style: none;
  display: none;
  flex-direction: column;
  z-index: 1100;
  animation: fadeIn 0.15s ease-out;
}

/* Hover or Open trigger for both WordPress sub-menu and EJS dropdown */
.main-nav ul li.menu-item-has-children:hover > .sub-menu,
.main-nav ul li.menu-item-has-children.open > .sub-menu,
.main-nav ul li.page_item_has_children:hover > .sub-menu,
.main-nav ul li.page_item_has_children.open > .sub-menu,
.main-nav .dropdown:hover .dropdown-menu,
.main-nav .dropdown.open .dropdown-menu {
  display: flex !important;
}

.main-nav ul .sub-menu li,
.main-nav .dropdown-menu li {
  width: 100%;
  margin: 0;
  padding: 0;
}

.main-nav ul .sub-menu li a,
.main-nav .dropdown-menu a {
  display: block;
  width: 100%;
  padding: 10px 18px;
  border-radius: 0;
  color: var(--color-text);
  font-weight: 500;
  font-size: 13px;
  text-align: left;
}

.main-nav ul .sub-menu li a:hover,
.main-nav .dropdown-menu a:hover {
  background: var(--gfg-green-tint);
  color: var(--gfg-green);
}

/* HEADER RIGHT ACTIONS */
.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-search-form {
  display: flex;
  align-items: center;
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: 4px 12px;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.header-search-form:focus-within {
  border-color: var(--gfg-green);
  box-shadow: 0 0 0 2px var(--gfg-green-tint);
}

.header-search-input {
  border: none;
  background: transparent;
  outline: none;
  font-size: 13px;
  width: 130px;
  color: var(--color-text);
  font-family: inherit;
}

.header-search-btn {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-slate-500);
  display: flex;
  align-items: center;
  padding: 0;
}

.header-search-close {
  display: none;
}

.mobile-search-btn {
  display: none !important;
}

.header-action-btn {
  background: transparent;
  border: none;
  color: var(--color-slate-600);
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s ease;
}

.header-action-btn:hover {
  background: var(--color-gray-100);
  color: var(--color-text);
}

.sign-in-btn {
  background: var(--color-slate-900);
  color: #ffffff;
  font-size: 13px;
  font-weight: 700;
  padding: 8px 18px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: opacity 0.15s ease;
}

.sign-in-btn:hover {
  opacity: 0.9;
  color: #ffffff;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--color-text);
  padding: 6px;
}

/* ==========================================================================
   SECONDARY SUB-NAV TAG BAR (SUB-HEADER)
   ========================================================================== */
.sub-header-bar {
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  padding: 8px 0;
  box-shadow: inset 0 -1px 0 rgba(0,0,0,0.03);
}

.sub-header-scroll {
  display: flex;
  align-items: center;
  gap: 20px;
  overflow-x: auto;
  white-space: nowrap;
  scrollbar-width: none; /* Firefox */
  -ms-overflow-style: none; /* IE */
}

.sub-header-scroll::-webkit-scrollbar {
  display: none; /* Chrome/Safari */
}

.sub-header-scroll a {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-slate-600);
  padding: 4px 8px;
  border-radius: 4px;
}

.sub-header-scroll a:hover,
.sub-header-scroll a.active {
  color: var(--gfg-green);
  background: var(--gfg-green-tint);
}

/* ==========================================================================
   HERO BANNER (GEEKSFORGEEKS "START YOUR LEARNING TODAY")
   ========================================================================== */
.hero-banner {
  background: linear-gradient(180deg, var(--gfg-green-light) 0%, var(--color-background) 100%);
  padding: 48px 20px 40px;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 36px;
}

.hero-title {
  font-size: 38px;
  font-weight: 800;
  color: var(--color-slate-900);
  letter-spacing: -0.8px;
  margin-bottom: 20px;
}

.hero-pills {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.hero-pill {
  padding: 8px 20px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.15s ease;
  border: 1px solid var(--color-gray-300);
  background: var(--color-surface);
  color: var(--color-slate-700);
}

.hero-pill.active {
  background: var(--gfg-green);
  color: #ffffff;
  border-color: var(--gfg-green);
}

.hero-pill:hover:not(.active) {
  border-color: var(--gfg-green);
  color: var(--gfg-green);
}

/* ==========================================================================
   MAIN SECTION & GEEKSFORGEEKS CARD GRID
   ========================================================================== */
.site-layout {
  display: grid;
  grid-template-columns: 1fr 300px;
  gap: 32px;
  margin-bottom: 48px;
}

.section-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
}

.section-title-row h2 {
  font-size: 24px;
  font-weight: 800;
  color: var(--color-slate-900);
  letter-spacing: -0.4px;
}

.btn-view-all {
  border: 1px solid var(--color-slate-700);
  border-radius: var(--radius-full);
  padding: 6px 20px;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-slate-800);
  background: var(--color-surface);
  transition: all 0.15s ease;
}

.btn-view-all:hover {
  background: var(--color-slate-900);
  color: #ffffff;
  border-color: var(--color-slate-900);
}

/* CARD GRID (WEB CENTRIX 3-COLUMN CARDS) */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
}

.gfg-card {
  background: var(--color-surface);
  border: 1px solid var(--color-card-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
}

.gfg-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--gfg-green);
}

.gfg-card-img-wrap {
  position: relative;
  width: 100%;
  height: 180px;
  background: #0f172a;
  overflow: hidden;
}

.gfg-card-img-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s ease;
}

.gfg-card:hover .gfg-card-img-wrap img {
  transform: scale(1.04);
}

/* Rating Badge (Top Right) */
.card-rating-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(4px);
  color: #ffffff;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 4px;
  z-index: 2;
}

.card-rating-badge .star {
  color: #f59e0b;
}

/* Category / Status Overlay Badge (Bottom Left) */
.card-live-badge {
  position: absolute;
  bottom: 10px;
  left: 10px;
  background: #dc2626; /* Red Live Course Badge */
  color: #ffffff;
  font-size: 10px;
  font-weight: 800;
  letter-spacing: 0.5px;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 4px;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 4px;
}

.card-live-badge.blue {
  background: #2563eb;
}

.card-live-badge.green {
  background: var(--gfg-green);
}

/* CARD CONTENT BODY */
.gfg-card-body {
  padding: 20px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.gfg-card-title {
  font-size: 16px;
  font-weight: 800;
  line-height: 1.35;
  color: var(--color-slate-900);
  margin-bottom: 10px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

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

.gfg-card-meta {
  font-size: 12px;
  color: var(--color-slate-500);
  margin-bottom: 16px;
  display: flex;
  align-items: center;
  gap: 6px;
}

/* CARD FOOTER */
.gfg-card-footer {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 12px;
}

.card-stats {
  color: var(--color-slate-500);
  display: flex;
  align-items: center;
  gap: 4px;
  font-weight: 600;
}

.card-explore-btn {
  color: var(--gfg-green);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 4px;
}

.card-explore-btn:hover {
  text-decoration: underline;
}

/* ==========================================================================
   SIDEBAR WIDGETS
   ========================================================================== */
.sidebar-widget {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-bottom: 24px;
  box-shadow: var(--shadow-xs);
}

.widget-title {
  font-size: 16px;
  font-weight: 800;
  color: var(--color-slate-900);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--gfg-green);
}

.sidebar-widget ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.sidebar-widget li {
  padding: 10px 0;
  border-bottom: 1px solid var(--color-border);
}

.sidebar-widget li:last-child {
  border-bottom: none;
}

.sidebar-widget a {
  font-size: 13px;
  font-weight: 600;
  color: var(--color-slate-700);
}

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

/* ==========================================================================
   CATEGORY HUBS (RE-SKINNED HOMEPAGE GRID)
   ========================================================================== */
.hero-content-box {
  text-align: center;
  max-width: 800px;
  margin: 0 auto;
}

.hero-eyebrow {
  display: inline-block;
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--gfg-green);
  background: var(--gfg-green-tint);
  padding: 4px 12px;
  border-radius: 99px;
  margin-bottom: 12px;
}

.hero-subtitle {
  font-size: 15px;
  color: var(--color-slate-600);
  margin-top: 8px;
  margin-bottom: 20px;
  line-height: 1.6;
}

.category-hub-block {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
  margin-bottom: 36px;
  box-shadow: var(--shadow-sm);
  transition: border-color 0.2s ease;
}

.category-hub-block:hover {
  border-color: #cbd5e1;
}

.hub-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.hub-header-left {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.hub-icon {
  font-size: 32px;
  background: var(--color-background);
  width: 56px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  flex-shrink: 0;
}

.hub-badge-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.hub-count-pill {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-slate-600);
  background: var(--color-background);
  padding: 2px 8px;
  border-radius: 4px;
  border: 1px solid var(--color-border);
}

.hub-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--color-slate-900);
  margin: 0 0 4px 0;
  line-height: 1.25;
}

.hub-description {
  font-size: 13px;
  color: var(--color-slate-600);
  margin: 0;
  line-height: 1.5;
}

.btn-hub-explore {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--color-slate-900);
  color: #ffffff;
  font-size: 12px;
  font-weight: 700;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: all 0.2s ease;
  white-space: nowrap;
}

.btn-hub-explore:hover {
  background: var(--gfg-green);
  color: #ffffff;
}

.hub-subtags {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  padding: 12px 16px;
  background: var(--color-background);
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  margin-bottom: 24px;
}

.subtag-label {
  font-size: 12px;
  font-weight: 800;
  color: var(--color-slate-700);
}

.hub-subtag-pill {
  font-size: 11px;
  font-weight: 700;
  color: var(--color-slate-600);
  background: var(--color-surface);
  padding: 3px 10px;
  border-radius: 99px;
  border: 1px solid var(--color-border);
}

.gfg-card-excerpt {
  font-size: 13px;
  color: var(--color-slate-600);
  line-height: 1.5;
  margin-bottom: 12px;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ==========================================================================
   CENTERED ENTERPRISE SINGLE POST LAYOUT
   ========================================================================== */
.single-post-page-wrapper {
  padding: 36px 0 72px;
  background: var(--color-background);
}

.single-post-card {
  max-width: 880px;
  margin: 0 auto;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 16px;
  padding: 44px;
  box-shadow: 0 4px 20px -2px rgba(0, 0, 0, 0.05);
}

.single-breadcrumb {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  font-weight: 600;
  color: var(--color-slate-500);
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.single-breadcrumb a {
  color: var(--color-slate-600);
  text-decoration: none;
}

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

.single-breadcrumb .sep {
  color: var(--color-slate-400);
}

.single-breadcrumb .current {
  color: var(--color-slate-900);
  font-weight: 700;
}

.single-post-badges {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 16px;
}

.category-pill-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  background: var(--gfg-green-tint);
  color: var(--gfg-green);
  font-size: 12px;
  font-weight: 800;
  border-radius: 99px;
  text-decoration: none;
}

.verified-pill-badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  background: #f1f5f9;
  color: #0f172a;
  font-size: 12px;
  font-weight: 800;
  border-radius: 99px;
  border: 1px solid #cbd5e1;
}

.single-post-title {
  font-size: 34px;
  font-weight: 900;
  line-height: 1.22;
  color: var(--color-slate-900);
  margin-bottom: 14px;
  letter-spacing: -0.5px;
}

.single-post-subtitle {
  font-size: 17px;
  line-height: 1.6;
  color: var(--color-slate-600);
  margin-bottom: 24px;
  font-weight: 400;
}

.single-post-meta-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 16px 20px;
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 32px;
  flex-wrap: wrap;
}

.author-meta-box {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar-circle {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  background: var(--gfg-green);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 16px;
}

.author-details {
  display: flex;
  flex-direction: column;
}

.author-name {
  font-size: 14px;
  font-weight: 800;
  color: var(--color-slate-900);
}

.author-role {
  font-size: 11px;
  color: var(--color-slate-500);
  font-weight: 600;
}

.meta-divider {
  width: 1px;
  height: 28px;
  background: var(--color-border);
}

.post-time-meta {
  display: flex;
  gap: 16px;
  font-size: 12px;
  color: var(--color-slate-600);
  font-weight: 600;
}

.btn-meta-action {
  padding: 6px 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 12px;
  font-weight: 700;
  color: var(--color-slate-700);
  cursor: pointer;
  transition: all 0.2s ease;
}

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

.single-post-image-container {
  width: 100%;
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 36px;
  border: 1px solid var(--color-border);
}

.single-post-img {
  width: 100%;
  max-height: 460px;
  object-fit: cover;
  display: block;
}

/* ==========================================================================
   ENTERPRISE ARTICLE CONTENT TYPOGRAPHY & HIGHLIGHTS
   ========================================================================== */
.single-post-content {
  font-size: 17px;
  line-height: 1.85;
  color: #334155;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

.single-post-content p {
  margin-bottom: 22px;
}

.single-post-content h2 {
  font-size: 24px;
  font-weight: 800;
  color: var(--color-slate-900);
  margin: 40px 0 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--gfg-green);
  letter-spacing: -0.3px;
}

.single-post-content h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-slate-900);
  margin: 32px 0 12px;
}

/* KEY TAKEAWAYS HIGHLIGHT BOX */
.key-takeaways-box {
  background: #f8fafc;
  border-left: 5px solid var(--gfg-green);
  border-radius: 0 12px 12px 0;
  padding: 24px 28px;
  margin: 28px 0 36px;
  border-top: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-xs);
}

.key-takeaways-box h3 {
  font-size: 18px;
  font-weight: 800;
  color: #0f172a;
  margin: 0 0 14px 0;
  border-bottom: none;
  padding-bottom: 0;
}

.key-takeaways-box ul {
  margin: 0;
  padding-left: 20px;
}

.key-takeaways-box li {
  margin-bottom: 10px;
  font-size: 15px;
  line-height: 1.6;
  color: #1e293b;
}

.key-takeaways-box li:last-child {
  margin-bottom: 0;
}

/* CALLOUT BOXES */
.callout {
  padding: 20px 24px;
  border-radius: 10px;
  margin: 28px 0;
  border: 1px solid transparent;
}

.callout h4 {
  font-size: 16px;
  font-weight: 800;
  margin: 0 0 8px 0;
}

.callout p {
  margin: 0;
  font-size: 15px;
  line-height: 1.6;
}

.callout-info {
  background: #eff6ff;
  border-color: #bfdbfe;
  color: #1e40af;
}

.callout-info h4 {
  color: #1e3a8a;
}

.callout-warning {
  background: #fffbeb;
  border-color: #fde68a;
  color: #92400e;
}

.callout-warning h4 {
  color: #78350f;
}

.callout-tip {
  background: #f0fdf4;
  border-color: #bbf7d0;
  color: #166534;
}

.callout-tip h4 {
  color: #14532d;
}

/* CODE BLOCKS & SYNTAX HIGHLIGHTING */
.single-post-content pre {
  background: #0f172a;
  color: #f8fafc;
  padding: 20px 24px;
  border-radius: 10px;
  overflow-x: auto;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 14px;
  line-height: 1.6;
  margin: 28px 0;
  border: 1px solid #334155;
  position: relative;
}

.single-post-content code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
}

.single-post-content p code,
.single-post-content li code {
  background: #f1f5f9;
  color: #0f172a;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 14px;
  border: 1px solid #e2e8f0;
  font-weight: 600;
}

/* BLOCKQUOTES */
.single-post-content blockquote {
  border-left: 4px solid var(--gfg-green);
  background: #f8fafc;
  padding: 20px 24px;
  margin: 28px 0;
  font-style: italic;
  color: #334155;
  border-radius: 0 8px 8px 0;
  border-top: 1px solid var(--color-border);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

/* LISTS & TABLES */
.single-post-content ul,
.single-post-content ol {
  margin: 20px 0 24px 24px;
}

.single-post-content li {
  margin-bottom: 8px;
}

.single-post-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 28px 0;
  font-size: 15px;
}

.single-post-content th,
.single-post-content td {
  padding: 12px 16px;
  border: 1px solid var(--color-border);
  text-align: left;
}

.single-post-content th {
  background: #f8fafc;
  font-weight: 800;
  color: #0f172a;
}

/* TAGS & AUTHOR BIO */
.single-post-tags-row {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.tags-label {
  font-size: 13px;
  font-weight: 800;
  color: var(--color-slate-700);
}

.tags-list {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.single-tag-pill {
  padding: 4px 12px;
  background: var(--gfg-green-tint);
  color: var(--gfg-green);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 700;
  text-decoration: none;
}

.single-tag-pill:hover {
  background: var(--gfg-green);
  color: #ffffff;
}

.author-bio-card {
  margin-top: 40px;
  background: #f8fafc;
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 24px;
  display: flex;
  gap: 20px;
  align-items: center;
}

.author-avatar-large {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--gfg-green);
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 24px;
  flex-shrink: 0;
}

.author-bio-info h4 {
  font-size: 16px;
  font-weight: 800;
  color: #0f172a;
  margin: 0 0 6px 0;
}

.author-bio-info p {
  font-size: 13px;
  color: #475569;
  margin: 0 0 10px 0;
  line-height: 1.5;
}

.author-verified-tag {
  font-size: 11px;
  font-weight: 800;
  color: var(--gfg-green);
  background: var(--gfg-green-tint);
  padding: 2px 8px;
  border-radius: 4px;
}

.single-related-section {
  margin-top: 48px;
  padding-top: 36px;
  border-top: 2px solid var(--color-border);
}

.single-comments-section {
  margin-top: 48px;
  padding-top: 36px;
  border-top: 2px solid var(--color-border);
}

.comments-header h3 {
  font-size: 20px;
  font-weight: 800;
  color: var(--color-slate-900);
  margin-bottom: 24px;
}

.comments-feed {
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 36px;
}

.comment-item-card {
  display: flex;
  gap: 16px;
  background: var(--color-background);
  border: 1px solid var(--color-border);
  padding: 18px;
  border-radius: 10px;
}

.comment-avatar-mini {
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: #3b82f6;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 14px;
  flex-shrink: 0;
}

.comment-body {
  flex-grow: 1;
}

.comment-meta {
  display: flex;
  justify-content: space-between;
  margin-bottom: 6px;
  font-size: 13px;
}

.comment-author {
  color: var(--color-slate-900);
}

.comment-date {
  color: var(--color-slate-500);
}

.comment-text {
  margin: 0;
  font-size: 14px;
  color: var(--color-slate-700);
  line-height: 1.5;
}

.empty-comments-state {
  padding: 24px;
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  text-align: center;
  color: var(--color-slate-500);
  font-size: 14px;
}

.comment-form-card {
  background: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  padding: 28px;
}

.comment-form-card h4 {
  font-size: 16px;
  font-weight: 800;
  color: var(--color-slate-900);
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 18px;
}

.form-group label {
  display: block;
  font-size: 13px;
  font-weight: 700;
  color: var(--color-slate-700);
  margin-bottom: 6px;
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-slate-900);
  outline: none;
  font-size: 14px;
  font-family: inherit;
}

.form-group input:focus,
.form-group textarea:focus {
  border-color: var(--gfg-green);
  box-shadow: 0 0 0 3px var(--gfg-green-tint);
}

.btn-submit-comment {
  padding: 12px 24px;
  background: var(--gfg-green);
  color: #ffffff;
  border: none;
  border-radius: var(--radius-sm);
  font-size: 14px;
  font-weight: 800;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-submit-comment:hover {
  background: #15803d;
}

@media (max-width: 768px) {
  .single-post-card {
    padding: 24px 18px;
    border-radius: 0;
    border-left: none;
    border-right: none;
  }

  .single-post-title {
    font-size: 26px;
  }

  .single-post-meta-bar {
    flex-direction: column;
    align-items: flex-start;
  }

  .meta-divider {
    display: none;
  }

  .category-hub-block {
    padding: 18px;
  }

  .hub-header {
    flex-direction: column;
  }
}

/* ==========================================================================
   FOOTER (NAVY BLUE THEME)
   ========================================================================== */
.site-footer {
  background-color: #0b1329 !important;
  color: #cbd5e1 !important;
  padding: 56px 0 28px;
  border-top: 1px solid #1e293b !important;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  margin-bottom: 40px;
}

.footer-brand-title {
  color: #ffffff !important;
  font-size: 20px;
  font-weight: 800;
  margin-bottom: 4px;
}

.footer-brand-subtitle {
  color: #94a3b8 !important;
  font-size: 12px;
  margin-bottom: 16px;
}

.footer-section-title {
  font-size: 13px;
  font-weight: 800;
  color: #f8fafc !important;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.social-links {
  display: flex;
  gap: 10px;
}

.social-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #1e293b !important;
  color: #e2e8f0 !important;
  border: 1px solid #334155 !important;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}

.social-btn:hover {
  background: #0284c7 !important;
  color: #ffffff !important;
  border-color: #0284c7 !important;
}

.footer-col h4 {
  color: #ffffff !important;
  font-size: 15px;
  font-weight: 800;
  margin-bottom: 16px;
}

.footer-col p {
  color: #94a3b8 !important;
  font-size: 13px;
  line-height: 1.6;
}

.footer-col ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-col li {
  margin-bottom: 10px;
}

.footer-col a {
  color: #cbd5e1 !important;
  font-size: 13px;
  text-decoration: none;
  transition: color 0.15s ease;
}

.footer-col a:hover {
  color: #38bdf8 !important;
}

.footer-bottom {
  border-top: 1px solid #1e293b !important;
  padding-top: 24px;
  text-align: center;
  font-size: 12px;
  color: #64748b !important;
}

/* ==========================================================================
   RESPONSIVE DESIGN & MOBILE OPTIMIZATIONS
   ========================================================================== */
html, body {
  overflow-x: hidden;
  max-width: 100vw;
}

img, video, iframe, object, embed {
  max-width: 100%;
  height: auto;
}

table {
  max-width: 100%;
  border-collapse: collapse;
}

/* TABLET & MOBILE BREAKPOINT (< 960px) */
@media (max-width: 960px) {
  .site-layout {
    grid-template-columns: 1fr;
    gap: 24px;
  }
  .menu-toggle {
    display: block;
  }
  .main-nav {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 20px;
    display: none;
    box-shadow: var(--shadow-md);
    z-index: 1001;
    max-height: calc(100vh - 64px);
    overflow-y: auto;
  }
  .main-nav.active {
    display: block;
    animation: fadeIn 0.2s ease-out;
  }
  .main-nav ul, .main-nav .nav-menu {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    gap: 4px;
  }
  .main-nav ul li, .main-nav .nav-menu li {
    width: 100%;
  }
  .main-nav a, .main-nav .dropdown-btn {
    width: 100%;
    justify-content: space-between;
    padding: 10px 14px;
    font-size: 15px;
  }
  .main-nav ul .sub-menu, .main-nav .dropdown-menu {
    position: static;
    box-shadow: none;
    border: none;
    border-left: 2px solid var(--gfg-green-tint);
    padding: 4px 0 4px 12px;
    margin-top: 4px;
    margin-bottom: 8px;
    background: transparent;
    width: 100%;
  }
  .hero-title {
    font-size: 28px;
  }
}

/* MEDIUM TABLET & SMARTPHONE (< 768px) */
@media (max-width: 768px) {
  /* Hide search box completely on mobile, show only icon button */
  .header-search-form {
    display: none !important;
  }

  .mobile-search-btn {
    display: flex !important;
    align-items: center;
    justify-content: center;
  }

  .container {
    padding: 0 16px;
  }
  .hero-banner {
    padding: 32px 16px 28px;
    margin-bottom: 24px;
  }
  .hero-title {
    font-size: 24px;
    margin-bottom: 14px;
  }
  .hero-subtitle {
    font-size: 14px;
  }
  .section-title-row {
    margin-bottom: 18px;
  }
  .section-title-row h2 {
    font-size: 20px;
  }
  .cards-grid {
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 16px;
  }
  .category-hub-block {
    padding: 20px 16px;
    margin-bottom: 24px;
  }
  .hub-title {
    font-size: 20px;
  }
  /* Single Post Mobile Optimizations */
  .single-post-card {
    padding: 28px 20px;
    border-radius: 12px;
  }
  .single-post-title {
    font-size: 26px;
  }
  .single-post-subtitle {
    font-size: 15px;
  }
  .single-post-meta-bar {
    padding: 14px 16px;
    gap: 12px;
  }
  .single-post-content {
    font-size: 16px;
    line-height: 1.75;
  }
  .single-post-content h2 {
    font-size: 21px;
    margin: 32px 0 14px;
  }
  .single-post-content h3 {
    font-size: 18px;
    margin: 24px 0 10px;
  }
  .key-takeaways-box {
    padding: 18px 20px;
  }
  .callout {
    padding: 16px 18px;
  }
  .footer-grid {
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: 28px;
  }
}

/* MOBILE COMPACT (< 640px) */
@media (max-width: 640px) {
  .header-actions {
    gap: 6px;
  }
  .sign-in-btn {
    padding: 6px 12px;
    font-size: 12px;
  }
  .header-action-btn {
    padding: 6px;
  }
  .cards-grid {
    grid-template-columns: 1fr;
  }
  .single-post-card {
    padding: 20px 16px;
  }
  .single-post-title {
    font-size: 22px;
    line-height: 1.3;
  }
  .single-post-meta-bar {
    flex-direction: column;
    align-items: flex-start;
  }
  .meta-divider {
    display: none;
  }
  .hub-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }
  .hub-header-left {
    gap: 12px;
  }
  .hub-icon {
    width: 44px;
    height: 44px;
    font-size: 24px;
  }
  /* Ensure embedded tables and pre scroll horizontally */
  .single-post-content table,
  table {
    display: block;
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }
  .single-post-content pre,
  pre, code {
    max-width: 100%;
    overflow-x: auto;
    word-break: break-all;
    white-space: pre-wrap;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }
}

/* TINY MOBILE SCREENS (< 480px) */
@media (max-width: 480px) {
  .container {
    padding: 0 12px;
  }
  .brand-logo {
    font-size: 18px;
    gap: 6px;
  }
  .brand-icon {
    width: 28px;
    height: 28px;
    font-size: 15px;
  }
  .header-action-btn[aria-label="Notifications"] {
    display: none;
  }
  .hero-banner {
    padding: 24px 12px 18px;
  }
  .hero-title {
    font-size: 20px;
  }
  .hero-pill {
    padding: 6px 12px;
    font-size: 11px;
  }
  .single-post-page-wrapper {
    padding: 16px 0 32px;
  }
  .single-post-card {
    padding: 16px 12px;
  }
  .single-post-title {
    font-size: 20px;
  }
  .key-takeaways-box {
    padding: 14px 14px;
    border-radius: 8px;
  }
  .callout {
    padding: 12px 14px;
  }
  .gfg-card-img-wrap {
    height: 160px;
  }
  .gfg-card-body {
    padding: 14px;
  }
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}