/**
 * Stro Hafta - Education Hub & Blog Stylesheet (learn-blog.css)
 * Matches the site design system: Inter font, green brand palette (#82b440),
 * deep darks (#0f172a), high-contrast accessibility, and smooth micro-interactions.
 */

:root {
  --learn-primary: #82b440;
  --learn-primary-hover: #719e35;
  --learn-primary-subtle: rgba(130, 180, 64, 0.12);
  --learn-dark: #0f172a;
  --learn-surface: #1e293b;
  --learn-card-bg: #ffffff;
  --learn-card-border: #e2e8f0;
  --learn-text-main: #1e293b;
  --learn-text-muted: #64748b;
  --learn-accent-blue: #3b82f6;
  --learn-accent-purple: #8b5cf6;
  --learn-radius-sm: 8px;
  --learn-radius-md: 14px;
  --learn-radius-lg: 20px;
  --learn-shadow: 0 4px 20px -2px rgba(15, 23, 42, 0.08);
  --learn-shadow-hover: 0 12px 32px -4px rgba(15, 23, 42, 0.14);
}

/* Base Page Wrappers */
.learn-page, .blog-page {
  background: #f8fafc;
  color: var(--learn-text-main);
  min-height: 100vh;
}

/* Breadcrumb Bar */
.edu-breadcrumb-bar {
  background: #ffffff;
  border-bottom: 1px solid var(--learn-card-border);
  padding: 14px 0;
}
.edu-breadcrumb-inner {
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 20px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.875rem;
  color: var(--learn-text-muted);
}
.edu-breadcrumb-inner a {
  color: var(--learn-text-muted);
  text-decoration: none;
  transition: color 0.2s ease;
}
.edu-breadcrumb-inner a:hover {
  color: var(--learn-primary);
}
.edu-breadcrumb-sep {
  opacity: 0.5;
}
.edu-breadcrumb-active {
  color: var(--learn-dark);
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 320px;
}

/* Hero Section */
.edu-hero {
  background: linear-gradient(180deg, #0f172a 0%, #1e293b 100%);
  color: #ffffff;
  padding: 68px 20px 72px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.edu-hero::before {
  content: '';
  position: absolute;
  top: -100px;
  left: 50%;
  transform: translateX(-50%);
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(130, 180, 64, 0.15) 0%, rgba(15, 23, 42, 0) 70%);
  pointer-events: none;
}
.edu-hero-container {
  max-width: 860px;
  margin: 0 auto;
  position: relative;
  z-index: 2;
}
.edu-hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(130, 180, 64, 0.18);
  border: 1px solid rgba(130, 180, 64, 0.4);
  color: #a3e635;
  padding: 6px 16px;
  border-radius: 999px;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  margin-bottom: 20px;
}
.edu-hero-title {
  font-size: clamp(2rem, 4.5vw, 3.25rem);
  font-weight: 900;
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
  color: #ffffff;
}
.edu-hero-title span {
  color: var(--learn-primary);
}
.edu-hero-subtext {
  font-size: clamp(1rem, 2vw, 1.1875rem);
  color: #94a3b8;
  line-height: 1.6;
  margin-bottom: 32px;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

/* Search Bar */
.edu-search-form {
  max-width: 620px;
  margin: 0 auto;
  position: relative;
}
.edu-search-input-wrap {
  position: relative;
  display: flex;
  align-items: center;
}
.edu-search-icon {
  position: absolute;
  left: 20px;
  font-size: 1.25rem;
  color: #94a3b8;
  pointer-events: none;
}
.edu-search-input {
  width: 100%;
  padding: 16px 20px 16px 54px;
  background: rgba(255, 255, 255, 0.95);
  border: 2px solid transparent;
  border-radius: 999px;
  font-size: 1rem;
  color: var(--learn-dark);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.25);
  outline: none;
  transition: all 0.2s ease;
}
.edu-search-input:focus {
  background: #ffffff;
  border-color: var(--learn-primary);
  box-shadow: 0 0 0 4px rgba(130, 180, 64, 0.25), 0 12px 36px rgba(0, 0, 0, 0.3);
}

/* Category Quick-Nav Cards */
.edu-cat-cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: -36px;
  position: relative;
  z-index: 5;
  max-width: 1240px;
  margin-left: auto;
  margin-right: auto;
  padding: 0 20px;
}
.edu-cat-card {
  background: #ffffff;
  border: 1px solid var(--learn-card-border);
  border-radius: var(--learn-radius-md);
  padding: 28px 24px;
  text-decoration: none;
  color: inherit;
  box-shadow: var(--learn-shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  display: flex;
  flex-direction: column;
}
.edu-cat-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--learn-shadow-hover);
  border-color: var(--learn-primary);
}
.edu-cat-icon {
  width: 56px;
  height: 56px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.625rem;
  margin-bottom: 18px;
}
.edu-cat-icon.courses { background: rgba(130, 180, 64, 0.15); color: var(--learn-primary); }
.edu-cat-icon.guides { background: rgba(59, 130, 246, 0.15); color: var(--learn-accent-blue); }
.edu-cat-icon.sheets { background: rgba(139, 92, 246, 0.15); color: var(--learn-accent-purple); }

.edu-cat-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--learn-dark);
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.edu-cat-title i.arrow {
  font-size: 1rem;
  color: var(--learn-primary);
  transition: transform 0.2s ease;
}
.edu-cat-card:hover .edu-cat-title i.arrow {
  transform: translateX(4px);
}
.edu-cat-desc {
  font-size: 0.9375rem;
  color: var(--learn-text-muted);
  line-height: 1.5;
  margin-bottom: 16px;
  flex-grow: 1;
}
.edu-cat-meta {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--learn-primary);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* Flagship Feature Spotlight */
.flagship-spotlight-section {
  padding: 80px 20px 40px;
  max-width: 1240px;
  margin: 0 auto;
}
.flagship-box {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  border-radius: var(--learn-radius-lg);
  border: 1px solid #334155;
  padding: 44px;
  color: #ffffff;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 40px;
  align-items: center;
  box-shadow: 0 20px 40px -10px rgba(0, 0, 0, 0.35);
  position: relative;
  overflow: hidden;
}
.flagship-box::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(130, 180, 64, 0.2) 0%, rgba(15, 23, 42, 0) 70%);
  pointer-events: none;
}
.flagship-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--learn-primary);
  color: #0f172a;
  padding: 4px 14px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 16px;
}
.flagship-title {
  font-size: clamp(1.625rem, 3vw, 2.25rem);
  font-weight: 900;
  line-height: 1.2;
  margin-bottom: 16px;
  color: #ffffff;
}
.flagship-tagline {
  font-size: 1.0625rem;
  color: #cbd5e1;
  line-height: 1.6;
  margin-bottom: 24px;
}
.flagship-curriculum-pills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 32px;
}
.flagship-curriculum-pill {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  padding: 6px 12px;
  font-size: 0.8125rem;
  color: #e2e8f0;
  display: flex;
  align-items: center;
  gap: 6px;
}
.flagship-curriculum-pill i {
  color: var(--learn-primary);
}
.flagship-cta-row {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
}
.btn-flagship-primary {
  background: var(--learn-primary);
  color: #0f172a;
  padding: 14px 28px;
  border-radius: 999px;
  font-weight: 800;
  font-size: 1rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: all 0.2s ease;
  box-shadow: 0 4px 16px rgba(130, 180, 64, 0.4);
}
.btn-flagship-primary:hover {
  background: #95cc4b;
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(130, 180, 64, 0.6);
  color: #0f172a;
}
.flagship-pricing-tag {
  font-size: 1.25rem;
  font-weight: 800;
  color: #ffffff;
  display: flex;
  align-items: center;
  gap: 8px;
}
.flagship-pricing-tag .strike {
  text-decoration: line-through;
  color: #94a3b8;
  font-size: 0.9375rem;
  font-weight: 500;
}
.flagship-right-card {
  background: rgba(15, 23, 42, 0.7);
  border: 1px solid #334155;
  border-radius: var(--learn-radius-md);
  padding: 24px;
  backdrop-filter: blur(10px);
}
.flagship-stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 20px;
}
.flagship-stat-item {
  background: rgba(255, 255, 255, 0.04);
  padding: 14px;
  border-radius: 10px;
  border: 1px solid rgba(255, 255, 255, 0.08);
}
.flagship-stat-num {
  font-size: 1.5rem;
  font-weight: 900;
  color: var(--learn-primary);
}
.flagship-stat-label {
  font-size: 0.75rem;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: 4px;
}
.flagship-instructor-mini {
  display: flex;
  align-items: center;
  gap: 12px;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}
.instructor-avatar-pill {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--learn-primary);
  color: #0f172a;
  font-weight: 800;
  font-size: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.instructor-info-name {
  font-weight: 700;
  font-size: 0.9375rem;
  color: #ffffff;
}
.instructor-info-role {
  font-size: 0.75rem;
  color: #94a3b8;
}

/* Card Grids for Courses, Ebooks, Cheat Sheets */
.edu-catalog-section {
  padding: 50px 20px 80px;
  max-width: 1240px;
  margin: 0 auto;
}
.edu-catalog-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 32px;
  gap: 20px;
  flex-wrap: wrap;
}
.edu-section-title-wrap h2 {
  font-size: clamp(1.5rem, 2.8vw, 2rem);
  font-weight: 800;
  color: var(--learn-dark);
  letter-spacing: -0.02em;
  margin-bottom: 6px;
}
.edu-section-title-wrap p {
  font-size: 1rem;
  color: var(--learn-text-muted);
  margin: 0;
}
.edu-filter-tabs {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}
.edu-tab-btn {
  background: #ffffff;
  border: 1px solid var(--learn-card-border);
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--learn-text-muted);
  cursor: pointer;
  transition: all 0.2s ease;
}
.edu-tab-btn:hover {
  border-color: var(--learn-primary);
  color: var(--learn-dark);
}
.edu-tab-btn.active {
  background: var(--learn-dark);
  color: #ffffff;
  border-color: var(--learn-dark);
}

/* Courses Grid */
.courses-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}
.course-card {
  background: #ffffff;
  border: 1px solid var(--learn-card-border);
  border-radius: var(--learn-radius-md);
  overflow: hidden;
  box-shadow: var(--learn-shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  display: flex;
  flex-direction: column;
}
.course-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--learn-shadow-hover);
  border-color: var(--learn-primary);
}
.course-card-thumb {
  height: 180px;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.course-thumb-icon {
  font-size: 3.5rem;
  color: var(--learn-primary);
  opacity: 0.9;
  filter: drop-shadow(0 4px 12px rgba(130, 180, 64, 0.3));
}
.course-badge-level {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(15, 23, 42, 0.85);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}
.course-badge-price {
  position: absolute;
  top: 14px;
  right: 14px;
  background: var(--learn-primary);
  color: #0f172a;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.8125rem;
  font-weight: 800;
}
.course-badge-price.free {
  background: #10b981;
  color: #ffffff;
}
.course-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}
.course-card-meta {
  display: flex;
  align-items: center;
  gap: 14px;
  font-size: 0.8125rem;
  color: var(--learn-text-muted);
  margin-bottom: 12px;
}
.course-card-meta span {
  display: flex;
  align-items: center;
  gap: 4px;
}
.course-card-title {
  font-size: 1.1875rem;
  font-weight: 800;
  color: var(--learn-dark);
  line-height: 1.35;
  margin-bottom: 10px;
}
.course-card-desc {
  font-size: 0.9375rem;
  color: var(--learn-text-muted);
  line-height: 1.5;
  margin-bottom: 20px;
  flex-grow: 1;
}
.course-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  border-top: 1px solid var(--learn-card-border);
}
.course-author-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--learn-dark);
}
.course-author-avatar {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: #e2e8f0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--learn-dark);
}
.btn-view-course {
  background: var(--learn-dark);
  color: #ffffff;
  padding: 8px 16px;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 700;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
}
.btn-view-course:hover {
  background: var(--learn-primary);
  color: #0f172a;
}

/* Ebooks Grid */
.ebooks-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 28px;
}
.ebook-card {
  background: #ffffff;
  border: 1px solid var(--learn-card-border);
  border-radius: var(--learn-radius-md);
  padding: 28px;
  box-shadow: var(--learn-shadow);
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.ebook-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--learn-shadow-hover);
  border-color: var(--learn-primary);
}
.ebook-mockup-cover {
  height: 200px;
  border-radius: 10px;
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 24px;
  position: relative;
  overflow: hidden;
  box-shadow: inset 4px 0 10px rgba(255, 255, 255, 0.1), 0 10px 20px -5px rgba(0, 0, 0, 0.2);
  margin-bottom: 20px;
  border-left: 6px solid var(--learn-primary);
}
.ebook-cover-badge {
  background: rgba(255, 255, 255, 0.12);
  color: #ffffff;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  padding: 4px 8px;
  border-radius: 4px;
  align-self: flex-start;
}
.ebook-cover-title {
  font-size: 1.25rem;
  font-weight: 900;
  color: #ffffff;
  line-height: 1.25;
}
.ebook-cover-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.75rem;
  color: #94a3b8;
}
.ebook-card-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--learn-dark);
  margin-bottom: 8px;
}
.ebook-card-desc {
  font-size: 0.9375rem;
  color: var(--learn-text-muted);
  line-height: 1.5;
  margin-bottom: 16px;
  flex-grow: 1;
}
.ebook-card-details {
  display: flex;
  align-items: center;
  gap: 16px;
  font-size: 0.8125rem;
  color: var(--learn-text-muted);
  margin-bottom: 20px;
}
.ebook-card-actions {
  display: flex;
  gap: 12px;
}
.btn-ebook-primary {
  flex: 1;
  background: var(--learn-primary);
  color: #0f172a;
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 700;
  text-align: center;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  transition: all 0.2s ease;
  border: none;
  cursor: pointer;
}
.btn-ebook-primary:hover {
  background: #95cc4b;
  transform: translateY(-2px);
}
.btn-ebook-outline {
  background: #ffffff;
  color: var(--learn-dark);
  border: 1px solid var(--learn-card-border);
  padding: 10px 18px;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 600;
  text-align: center;
  text-decoration: none;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s ease;
}
.btn-ebook-outline:hover {
  border-color: var(--learn-primary);
  color: var(--learn-primary);
}

/* Cheat Sheets Grid */
.cheatsheets-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 28px;
}
.cheatsheet-card {
  background: #ffffff;
  border: 1px solid var(--learn-card-border);
  border-radius: var(--learn-radius-md);
  overflow: hidden;
  box-shadow: var(--learn-shadow);
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
}
.cheatsheet-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--learn-shadow-hover);
  border-color: var(--learn-primary);
}
.cheatsheet-preview-box {
  height: 220px;
  background: #0f172a;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 16px;
}
.cheatsheet-preview-svg {
  width: 100%;
  height: 100%;
  object-fit: contain;
  transition: transform 0.3s ease;
}
.cheatsheet-card:hover .cheatsheet-preview-svg {
  transform: scale(1.03);
}
.cheatsheet-quick-overlay {
  position: absolute;
  inset: 0;
  background: rgba(15, 23, 42, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 0.2s ease;
}
.cheatsheet-card:hover .cheatsheet-quick-overlay {
  opacity: 1;
}
.btn-quick-preview {
  background: #ffffff;
  color: var(--learn-dark);
  padding: 10px 20px;
  border-radius: 999px;
  font-size: 0.875rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
  transition: transform 0.2s ease;
}
.btn-quick-preview:hover {
  transform: scale(1.05);
  background: var(--learn-primary);
  color: #0f172a;
}
.cheatsheet-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}
.cheatsheet-title {
  font-size: 1.1875rem;
  font-weight: 800;
  color: var(--learn-dark);
  margin-bottom: 6px;
}
.cheatsheet-desc {
  font-size: 0.9375rem;
  color: var(--learn-text-muted);
  line-height: 1.5;
  margin-bottom: 18px;
  flex-grow: 1;
}
.cheatsheet-actions {
  display: flex;
  gap: 10px;
}

/* Course Detail Page Styles */
.course-detail-layout {
  display: grid;
  grid-template-columns: 1fr 380px;
  gap: 40px;
  max-width: 1240px;
  margin: 40px auto 80px;
  padding: 0 20px;
  align-items: start;
}
.course-main-col {
  background: #ffffff;
  border: 1px solid var(--learn-card-border);
  border-radius: var(--learn-radius-md);
  padding: 40px;
  box-shadow: var(--learn-shadow);
}
.course-sidebar-card {
  background: #ffffff;
  border: 1px solid var(--learn-card-border);
  border-radius: var(--learn-radius-md);
  padding: 32px;
  box-shadow: var(--learn-shadow);
  position: sticky;
  top: 96px;
}
.course-sidebar-price {
  font-size: 2.25rem;
  font-weight: 900;
  color: var(--learn-dark);
  margin-bottom: 6px;
}
.course-sidebar-guarantee {
  font-size: 0.8125rem;
  color: var(--learn-primary);
  font-weight: 700;
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.course-features-list {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
}
.course-features-list li {
  font-size: 0.9375rem;
  color: var(--learn-text-main);
  padding: 8px 0;
  display: flex;
  align-items: center;
  gap: 10px;
  border-bottom: 1px solid #f1f5f9;
}
.course-features-list li i {
  color: var(--learn-primary);
}

/* Accordion Component */
.accordion-group {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-top: 20px;
}
.accordion-item {
  border: 1px solid var(--learn-card-border);
  border-radius: 12px;
  overflow: hidden;
  transition: border-color 0.2s ease;
}
.accordion-item.active {
  border-color: var(--learn-primary);
}
.accordion-header {
  width: 100%;
  background: #f8fafc;
  padding: 16px 20px;
  text-align: left;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 1rem;
  font-weight: 700;
  color: var(--learn-dark);
  transition: background 0.2s ease;
}
.accordion-header:hover {
  background: #f1f5f9;
}
.accordion-header i.acc-chevron {
  transition: transform 0.25s ease;
  font-size: 0.875rem;
  color: var(--learn-text-muted);
}
.accordion-item.active .accordion-header i.acc-chevron {
  transform: rotate(180deg);
  color: var(--learn-primary);
}
.accordion-body {
  display: none;
  padding: 20px;
  background: #ffffff;
  border-top: 1px solid var(--learn-card-border);
}
.accordion-item.active .accordion-body {
  display: block;
}
.lesson-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.lesson-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 0;
  border-bottom: 1px solid #f8fafc;
  font-size: 0.9375rem;
}
.lesson-row:last-child {
  border-bottom: none;
}
.lesson-title-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--learn-text-main);
}
.lesson-title-wrap i {
  color: var(--learn-text-muted);
}
.lesson-meta-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.8125rem;
}
.badge-preview {
  background: rgba(130, 180, 64, 0.15);
  color: var(--learn-primary);
  font-weight: 700;
  padding: 2px 8px;
  border-radius: 4px;
}

/* Blog Styles */
.blog-listing-hero {
  background: #0f172a;
  color: #ffffff;
  padding: 64px 20px 48px;
  text-align: center;
}
.blog-featured-card {
  max-width: 1240px;
  margin: -32px auto 50px;
  padding: 0 20px;
}
.blog-featured-inner {
  background: #ffffff;
  border: 1px solid var(--learn-card-border);
  border-radius: var(--learn-radius-lg);
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  overflow: hidden;
  box-shadow: var(--learn-shadow);
  transition: transform 0.25s ease, box-shadow 0.25s ease;
  text-decoration: none;
  color: inherit;
}
.blog-featured-inner:hover {
  transform: translateY(-4px);
  box-shadow: var(--learn-shadow-hover);
}
.blog-featured-media {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px;
  min-height: 280px;
}
.blog-featured-media i {
  font-size: 5rem;
  color: var(--learn-primary);
  opacity: 0.9;
}
.blog-featured-content {
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: center;
}
.blog-post-card {
  background: #ffffff;
  border: 1px solid var(--learn-card-border);
  border-radius: var(--learn-radius-md);
  padding: 28px;
  box-shadow: var(--learn-shadow);
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease, box-shadow 0.25s ease, border-color 0.25s ease;
  text-decoration: none;
  color: inherit;
}
.blog-post-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--learn-shadow-hover);
  border-color: var(--learn-primary);
}
.blog-post-header-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  font-size: 0.8125rem;
  color: var(--learn-text-muted);
  margin-bottom: 12px;
}
.blog-badge-cat {
  background: rgba(130, 180, 64, 0.15);
  color: var(--learn-primary);
  font-weight: 700;
  padding: 4px 10px;
  border-radius: 6px;
  text-transform: uppercase;
}
.blog-post-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--learn-dark);
  line-height: 1.35;
  margin-bottom: 10px;
}
.blog-post-excerpt {
  font-size: 0.9375rem;
  color: var(--learn-text-muted);
  line-height: 1.6;
  margin-bottom: 20px;
  flex-grow: 1;
}

/* Single Blog Post Template */
.blog-post-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 48px;
  max-width: 1240px;
  margin: 40px auto 80px;
  padding: 0 20px;
  align-items: start;
}
.blog-article-content {
  background: #ffffff;
  border: 1px solid var(--learn-card-border);
  border-radius: var(--learn-radius-md);
  padding: 48px;
  box-shadow: var(--learn-shadow);
  font-size: 1.0625rem;
  line-height: 1.75;
  color: #334155;
}
.blog-article-header {
  margin-bottom: 32px;
  padding-bottom: 24px;
  border-bottom: 1px solid var(--learn-card-border);
}
.blog-article-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 900;
  line-height: 1.2;
  letter-spacing: -0.025em;
  color: var(--learn-dark);
  margin-bottom: 18px;
}
.blog-author-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}
.blog-author-details {
  display: flex;
  align-items: center;
  gap: 12px;
}
.author-avatar-img {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--learn-primary);
  color: #0f172a;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  font-size: 1rem;
}

/* Social Share Bar */
.social-share-group {
  display: flex;
  align-items: center;
  gap: 8px;
}
.share-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: #f1f5f9;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--learn-dark);
  transition: all 0.2s ease;
  text-decoration: none;
}
.share-btn:hover {
  background: var(--learn-primary);
  color: #0f172a;
  transform: translateY(-2px);
}

/* Editorial Markdown Rendering */
.blog-heading-h2 {
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--learn-dark);
  margin: 44px 0 18px;
  letter-spacing: -0.02em;
  position: relative;
  scroll-margin-top: 100px;
}
.blog-heading-h3 {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--learn-dark);
  margin: 32px 0 14px;
  scroll-margin-top: 100px;
}
.heading-anchor {
  color: var(--learn-primary);
  text-decoration: none;
  margin-left: 8px;
  opacity: 0;
  transition: opacity 0.2s ease;
}
.blog-heading-h2:hover .heading-anchor,
.blog-heading-h3:hover .heading-anchor {
  opacity: 1;
}
.blog-paragraph {
  margin-bottom: 22px;
}
.blog-list, .blog-ordered-list {
  margin: 0 0 24px 24px;
  padding: 0;
}
.blog-list li, .blog-ordered-list li {
  margin-bottom: 8px;
}
.blog-inline-code {
  background: #f1f5f9;
  color: #0f172a;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.9em;
  font-family: monospace;
}
.blog-blockquote {
  border-left: 4px solid var(--learn-primary);
  background: #f8fafc;
  padding: 16px 24px;
  margin: 28px 0;
  border-radius: 0 8px 8px 0;
  font-style: italic;
  color: #475569;
}

/* Callout Alert Boxes */
.blog-callout {
  border-radius: 10px;
  padding: 18px 22px;
  margin: 28px 0;
  border-left: 5px solid;
}
.blog-callout-header {
  font-size: 0.875rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.blog-callout-body {
  font-size: 0.9375rem;
  line-height: 1.6;
}
.blog-callout-tip {
  background: rgba(130, 180, 64, 0.08);
  border-left-color: var(--learn-primary);
  color: #1e293b;
}
.blog-callout-tip .blog-callout-header { color: var(--learn-primary); }
.blog-callout-note {
  background: rgba(59, 130, 246, 0.08);
  border-left-color: var(--learn-accent-blue);
  color: #1e293b;
}
.blog-callout-note .blog-callout-header { color: var(--learn-accent-blue); }
.blog-callout-important {
  background: rgba(245, 158, 11, 0.08);
  border-left-color: #f59e0b;
  color: #1e293b;
}
.blog-callout-important .blog-callout-header { color: #f59e0b; }
.blog-callout-warning {
  background: rgba(239, 68, 68, 0.08);
  border-left-color: #ef4444;
  color: #1e293b;
}
.blog-callout-warning .blog-callout-header { color: #ef4444; }

/* Code Blocks with Copy Button */
.code-block-wrapper {
  background: #0f172a;
  border-radius: 12px;
  margin: 28px 0;
  overflow: hidden;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
}
.code-block-header {
  background: #1e293b;
  padding: 10px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid #334155;
}
.code-block-lang {
  font-size: 0.75rem;
  font-weight: 700;
  color: #94a3b8;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 6px;
}
.copy-code-btn {
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #e2e8f0;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  transition: all 0.2s ease;
}
.copy-code-btn:hover {
  background: var(--learn-primary);
  color: #0f172a;
  border-color: var(--learn-primary);
}
.code-block-pre {
  padding: 20px;
  margin: 0;
  overflow-x: auto;
  font-family: 'Fira Code', Consolas, Monaco, monospace;
  font-size: 0.875rem;
  line-height: 1.6;
  color: #e2e8f0;
}

/* Sticky Blog Table of Contents */
.blog-sidebar-sticky {
  position: sticky;
  top: 96px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.blog-toc-card {
  background: #ffffff;
  border: 1px solid var(--learn-card-border);
  border-radius: var(--learn-radius-md);
  padding: 24px;
  box-shadow: var(--learn-shadow);
}
.blog-toc-title {
  font-size: 0.875rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--learn-dark);
  margin-bottom: 14px;
  display: flex;
  align-items: center;
  gap: 8px;
}
.blog-toc-list {
  list-style: none;
  padding: 0;
  margin: 0;
}
.blog-toc-item {
  margin-bottom: 10px;
}
.blog-toc-item a {
  text-decoration: none;
  color: var(--learn-text-muted);
  font-size: 0.875rem;
  line-height: 1.4;
  display: block;
  transition: color 0.2s ease, transform 0.2s ease;
}
.blog-toc-item a:hover, .blog-toc-item.active a {
  color: var(--learn-primary);
  font-weight: 600;
  transform: translateX(4px);
}
.blog-toc-item.level-3 {
  padding-left: 14px;
  font-size: 0.8125rem;
}

/* Inline Template CTA Promo */
.blog-inline-promo-card {
  background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
  border-radius: 12px;
  padding: 24px;
  color: #ffffff;
  margin: 36px 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  border: 1px solid #334155;
}
.blog-inline-promo-card h4 {
  font-size: 1.125rem;
  font-weight: 800;
  margin-bottom: 6px;
  color: #ffffff;
}
.blog-inline-promo-card p {
  font-size: 0.875rem;
  color: #94a3b8;
  margin: 0;
}

/* Modals */
.edu-modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(6px);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 20px;
  animation: fadeIn 0.2s ease;
}
.edu-modal-backdrop.open {
  display: flex;
}
.edu-modal-box {
  background: #ffffff;
  border-radius: var(--learn-radius-lg);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.4);
  position: relative;
  padding: 32px;
}
.edu-modal-close-btn {
  position: absolute;
  top: 18px;
  right: 18px;
  background: #f1f5f9;
  border: none;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--learn-dark);
  font-size: 1rem;
  transition: all 0.2s ease;
}
.edu-modal-close-btn:hover {
  background: #e2e8f0;
}

/* Quick-view Cheat Sheet Modal Specifics */
.modal-cheatsheet-preview {
  background: #0f172a;
  border-radius: 12px;
  padding: 16px;
  max-height: 480px;
  overflow-y: auto;
  margin: 20px 0;
  border: 1px solid #334155;
  text-align: center;
}
.modal-cheatsheet-preview svg {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
}

/* Newsletter & Final CTA Blocks */
.edu-newsletter-cta-block {
  background: #0f172a;
  color: #ffffff;
  border-radius: var(--learn-radius-lg);
  padding: 56px 40px;
  max-width: 1240px;
  margin: 60px auto 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.edu-newsletter-form {
  display: flex;
  max-width: 500px;
  margin: 24px auto 0;
  gap: 10px;
}
.edu-newsletter-input {
  flex: 1;
  padding: 14px 20px;
  border-radius: 999px;
  border: 1px solid #334155;
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  outline: none;
}
.edu-newsletter-input:focus {
  border-color: var(--learn-primary);
}
.btn-edu-subscribe {
  background: var(--learn-primary);
  color: #0f172a;
  border: none;
  padding: 14px 24px;
  border-radius: 999px;
  font-weight: 800;
  cursor: pointer;
  transition: all 0.2s ease;
}
.btn-edu-subscribe:hover {
  background: #95cc4b;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .edu-cat-cards-grid {
    grid-template-columns: 1fr;
    margin-top: 20px;
  }
  .flagship-box {
    grid-template-columns: 1fr;
    padding: 32px;
  }
  .course-detail-layout, .blog-post-layout {
    grid-template-columns: 1fr;
  }
  .course-sidebar-card, .blog-sidebar-sticky {
    position: static;
  }
  .blog-featured-inner {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .edu-hero {
    padding: 48px 16px 56px;
  }
  .edu-catalog-header {
    flex-direction: column;
    align-items: flex-start;
  }
  .courses-grid, .ebooks-grid, .cheatsheets-grid {
    grid-template-columns: 1fr;
  }
  .blog-article-content {
    padding: 24px 18px;
  }
  .edu-newsletter-form {
    flex-direction: column;
  }
  .btn-edu-subscribe {
    width: 100%;
  }
}



/* ========================================================
   ENHANCED EDITORIAL BLOG STYLES (Progress bar, covers, tables)
   ======================================================== */

/* Reading Progress Bar */
.reading-progress-bar {
  position: fixed;
  top: 0;
  left: 0;
  height: 3px;
  background: linear-gradient(90deg, #82b440 0%, #10b981 100%);
  width: 0%;
  z-index: 99999;
  transition: width 0.1s ease-out;
}

/* Styled Lead Opening Paragraph */
.blog-lead {
  font-size: 1.25rem !important;
  line-height: 1.8 !important;
  color: #0f172a !important;
  font-weight: 500 !important;
  margin-bottom: 28px !important;
  border-left: 4px solid var(--learn-primary) !important;
  padding: 18px 22px !important;
  background: rgba(130, 180, 64, 0.05) !important;
  border-radius: 0 10px 10px 0 !important;
}

/* Blog Horizontal Divider */
.blog-divider {
  border: none;
  height: 1px;
  background: linear-gradient(90deg, rgba(226,232,240,0) 0%, #cbd5e1 50%, rgba(226,232,240,0) 100%);
  margin: 48px 0;
}

/* Blog Hero Cover Visual */
.blog-hero-cover-wrap {
  border-radius: 16px;
  overflow: hidden;
  margin: 0 0 36px;
  box-shadow: 0 12px 36px -4px rgba(15, 23, 42, 0.12);
  border: 1px solid #e2e8f0;
  background: #0f172a;
}
.blog-hero-cover-img {
  width: 100%;
  height: auto;
  display: block;
  aspect-ratio: 1200 / 630;
  object-fit: cover;
}

/* Blog Listing Card Covers */
.blog-card-cover-wrap {
  height: 200px;
  background: #0f172a;
  position: relative;
  overflow: hidden;
  border-top-left-radius: 14px;
  border-top-right-radius: 14px;
}
.blog-card-cover-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.35s ease;
}
.blog-post-card:hover .blog-card-cover-img {
  transform: scale(1.05);
}
.blog-card-badge-pill {
  position: absolute;
  top: 14px;
  left: 14px;
  background: rgba(15, 23, 42, 0.85);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #a3e635;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.6875rem;
  font-weight: 800;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* Post Navigation (Previous / Next Article) */
.blog-post-nav-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin: 40px 0 20px;
}
.blog-nav-card {
  background: #f8fafc;
  border: 1px solid #e2e8f0;
  border-radius: 12px;
  padding: 20px;
  text-decoration: none;
  color: inherit;
  transition: all 0.2s ease;
  display: flex;
  flex-direction: column;
}
.blog-nav-card:hover {
  border-color: var(--learn-primary);
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0,0,0,0.06);
}
.blog-nav-card.next {
  text-align: right;
}
.blog-nav-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 800;
  color: var(--learn-primary);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.blog-nav-card.next .blog-nav-label {
  justify-content: flex-end;
}
.blog-nav-title {
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--learn-dark);
  line-height: 1.4;
}

/* Enhanced Blog Responsive Tables */
.blog-table-responsive {
  overflow-x: auto;
  margin: 32px 0;
  border-radius: 12px;
  border: 1px solid var(--learn-card-border);
  box-shadow: 0 2px 10px rgba(0,0,0,0.03);
}
.blog-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.9375rem;
}
.blog-table th {
  background: #0f172a;
  color: #ffffff;
  padding: 14px 18px;
  font-weight: 700;
  font-size: 0.8125rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.blog-table td {
  padding: 14px 18px;
  border-bottom: 1px solid #f1f5f9;
  color: #334155;
}
.blog-table tr:last-child td {
  border-bottom: none;
}
.blog-table tr:nth-child(even) td {
  background: #f8fafc;
}


/* ==========================================================================
   INTERACTIVE W3SCHOOLS-STYLE LESSON RUNNER & PLAYGROUND
   ========================================================================== */
.lesson-workspace {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  background: #f8fafc;
  color: #0f172a;
}

.lesson-top-bar {
  height: 62px;
  background: #0f172a;
  color: #ffffff;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  border-bottom: 1px solid #1e293b;
  position: sticky;
  top: 0;
  z-index: 1000;
  gap: 16px;
}

.lesson-top-left {
  display: flex;
  align-items: center;
  gap: 14px;
  min-width: 0;
}

.lesson-top-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #ffffff;
  text-decoration: none;
  font-weight: 800;
  font-size: 1.0625rem;
  letter-spacing: -0.3px;
  flex-shrink: 0;
}

.lesson-top-brand svg {
  width: 22px;
  height: 22px;
  fill: var(--learn-primary);
}

.lesson-course-select-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.lesson-select-dropdown {
  background: #1e293b;
  color: #f8fafc;
  border: 1px solid #334155;
  padding: 6px 12px;
  border-radius: 8px;
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  outline: none;
  max-width: 280px;
}

.lesson-select-dropdown:focus {
  border-color: var(--learn-primary);
}

.lesson-top-center {
  display: flex;
  align-items: center;
  gap: 12px;
}

.lesson-progress-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.75rem;
  color: #94a3b8;
  font-weight: 600;
}

.lesson-progress-bar {
  width: 90px;
  height: 6px;
  background: #334155;
  border-radius: 3px;
  overflow: hidden;
}

.lesson-progress-fill {
  height: 100%;
  background: var(--learn-primary);
  border-radius: 3px;
  transition: width 0.3s ease;
}

.lesson-badge-free-pill {
  background: rgba(130, 180, 64, 0.2);
  color: #82b440;
  border: 1px solid rgba(130, 180, 64, 0.4);
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.6875rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.lesson-badge-locked-pill {
  background: rgba(245, 158, 11, 0.2);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.4);
  padding: 3px 10px;
  border-radius: 12px;
  font-size: 0.6875rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}

.lesson-top-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

.btn-lesson-nav {
  background: #1e293b;
  color: #f8fafc;
  border: 1px solid #334155;
  padding: 6px 14px;
  border-radius: 6px;
  font-size: 0.8125rem;
  font-weight: 600;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
}

.btn-lesson-nav:hover {
  background: #334155;
  color: #ffffff;
}

.btn-lesson-nav.primary {
  background: var(--learn-primary);
  color: #0f172a;
  border-color: var(--learn-primary);
}

.btn-lesson-nav.primary:hover {
  background: var(--learn-primary-hover);
}

.btn-lesson-nav.disabled {
  opacity: 0.4;
  pointer-events: none;
}

/* Split Screen Layout */
.lesson-split-container {
  display: grid;
  grid-template-columns: 1fr 1.15fr;
  flex: 1;
  height: calc(100vh - 62px);
  overflow: hidden;
}

/* Left Column: Theory & Instructions */
.lesson-theory-panel {
  overflow-y: auto;
  padding: 32px 36px 60px;
  background: #ffffff;
  border-right: 1px solid #e2e8f0;
}

.lesson-header-badge-row {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}

.lesson-lang-tag {
  background: #0f172a;
  color: #ffffff;
  padding: 4px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.lesson-title-heading {
  font-size: 1.625rem;
  font-weight: 900;
  color: #0f172a;
  line-height: 1.3;
  margin: 0 0 16px;
}

.lesson-summary-box {
  background: #f8fafc;
  border-left: 4px solid var(--learn-primary);
  padding: 14px 18px;
  border-radius: 0 8px 8px 0;
  font-size: 0.9375rem;
  color: #334155;
  line-height: 1.6;
  margin-bottom: 24px;
}

.lesson-body-prose {
  font-size: 0.9375rem;
  line-height: 1.75;
  color: #334155;
  margin-bottom: 32px;
}

.lesson-body-prose code {
  background: #f1f5f9;
  color: #e11d48;
  padding: 2px 6px;
  border-radius: 4px;
  font-size: 0.875rem;
  font-family: Consolas, monospace;
}

/* Challenge Box */
.lesson-challenge-box {
  background: #0f172a;
  color: #ffffff;
  border-radius: 12px;
  padding: 24px;
  margin-top: 28px;
  box-shadow: 0 10px 25px rgba(15, 23, 42, 0.15);
  border: 1px solid #1e293b;
}

.challenge-badge-title {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--learn-primary);
  font-size: 0.8125rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 8px;
}

.challenge-heading {
  font-size: 1.1875rem;
  font-weight: 800;
  color: #ffffff;
  margin: 0 0 10px;
}

.challenge-instructions-text {
  font-size: 0.875rem;
  color: #cbd5e1;
  line-height: 1.6;
  margin: 0 0 16px;
}

.challenge-hint-accordion {
  background: #182234;
  border: 1px solid #334155;
  border-radius: 8px;
  padding: 10px 14px;
  font-size: 0.8125rem;
  color: #94a3b8;
  cursor: pointer;
  margin-top: 12px;
}

.challenge-hint-content {
  display: none;
  margin-top: 8px;
  color: #e2e8f0;
  font-family: Consolas, monospace;
  font-size: 0.8125rem;
}

.challenge-hint-accordion.open .challenge-hint-content {
  display: block;
}

/* Right Column: Code Editor & Live Output */
.lesson-editor-panel {
  display: flex;
  flex-direction: column;
  height: 100%;
  background: #090d16;
  border-left: 1px solid #1e293b;
  overflow: hidden;
}

.editor-action-bar {
  height: 48px;
  background: #0f172a;
  border-bottom: 1px solid #1e293b;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 16px;
  flex-shrink: 0;
}

.editor-action-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.editor-lang-pill {
  font-size: 0.75rem;
  font-weight: 700;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  display: flex;
  align-items: center;
  gap: 6px;
}

.editor-lang-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--learn-primary);
}

.editor-action-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-run-code {
  background: var(--learn-primary);
  color: #0f172a;
  border: none;
  padding: 6px 16px;
  border-radius: 6px;
  font-weight: 800;
  font-size: 0.8125rem;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s ease;
}

.btn-run-code:hover {
  background: var(--learn-primary-hover);
  transform: translateY(-1px);
}

.btn-reset-code {
  background: #1e293b;
  color: #94a3b8;
  border: 1px solid #334155;
  padding: 6px 12px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-reset-code:hover {
  background: #334155;
  color: #ffffff;
}

/* Code Textarea Area */
.code-editor-area {
  flex: 1;
  min-height: 200px;
  position: relative;
  background: #090d16;
  display: flex;
}

.code-line-numbers {
  width: 42px;
  background: #060910;
  border-right: 1px solid #1e293b;
  padding: 14px 6px;
  font-family: Consolas, 'Courier New', monospace;
  font-size: 13px;
  color: #475569;
  text-align: right;
  line-height: 22px;
  user-select: none;
  overflow: hidden;
}

.code-textarea {
  flex: 1;
  background: transparent;
  color: #f8fafc;
  font-family: Consolas, 'Courier New', monospace;
  font-size: 13px;
  line-height: 22px;
  padding: 14px 16px;
  border: none;
  outline: none;
  resize: none;
  white-space: pre;
  tab-size: 2;
  overflow-y: auto;
}

/* Output Window */
.code-output-area {
  height: 45%;
  min-height: 180px;
  background: #0c111c;
  border-top: 2px solid #1e293b;
  display: flex;
  flex-direction: column;
}

.output-tabs-bar {
  height: 38px;
  background: #0f172a;
  border-bottom: 1px solid #1e293b;
  display: flex;
  align-items: center;
  padding: 0 14px;
  gap: 12px;
}

.output-tab-btn {
  background: transparent;
  border: none;
  color: #94a3b8;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 6px 10px;
  border-radius: 4px;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.output-tab-btn.active {
  background: #1e293b;
  color: #ffffff;
}

.output-tab-content-wrap {
  flex: 1;
  overflow: auto;
  position: relative;
}

.output-iframe-view {
  width: 100%;
  height: 100%;
  border: none;
  background: #ffffff;
}

.output-terminal-view {
  width: 100%;
  height: 100%;
  padding: 14px 18px;
  font-family: Consolas, 'Courier New', monospace;
  font-size: 13px;
  line-height: 20px;
  color: #38bdf8;
  overflow-y: auto;
  white-space: pre-wrap;
}

.output-terminal-view .stdout-line {
  color: #38bdf8;
}

.output-terminal-view .success-line {
  color: var(--learn-primary);
  font-weight: bold;
}

.output-terminal-view .error-line {
  color: #f87171;
}

/* Test Result Alert Bar */
.test-result-alert {
  padding: 10px 18px;
  font-size: 0.8125rem;
  font-weight: 700;
  display: none;
  align-items: center;
  justify-content: space-between;
  border-top: 1px solid transparent;
}

.test-result-alert.success {
  display: flex;
  background: rgba(130, 180, 64, 0.15);
  color: #82b440;
  border-color: rgba(130, 180, 64, 0.4);
}

.test-result-alert.failure {
  display: flex;
  background: rgba(239, 68, 68, 0.15);
  color: #f87171;
  border-color: rgba(239, 68, 68, 0.3);
}

/* Premium Lock Paywall Screen */
.premium-lock-view {
  min-height: calc(100vh - 62px);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  background: #090d16;
}

.lock-card-box {
  max-width: 680px;
  width: 100%;
  background: #0f172a;
  border: 1px solid #1e293b;
  border-radius: 16px;
  padding: 40px 36px;
  text-align: center;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  position: relative;
  overflow: hidden;
}

.lock-glow-pill {
  width: 72px;
  height: 72px;
  margin: 0 auto 20px;
  background: rgba(245, 158, 11, 0.15);
  color: #fbbf24;
  border: 1px solid rgba(245, 158, 11, 0.3);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
}

.lock-card-title {
  font-size: 1.75rem;
  font-weight: 900;
  color: #ffffff;
  margin: 0 0 10px;
}

.lock-card-desc {
  font-size: 1rem;
  color: #94a3b8;
  line-height: 1.6;
  margin: 0 auto 24px;
  max-width: 520px;
}

.lock-pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 28px;
  text-align: left;
}

.lock-plan-card {
  background: #182234;
  border: 2px solid #334155;
  border-radius: 12px;
  padding: 20px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.lock-plan-card.active,
.lock-plan-card:hover {
  border-color: var(--learn-primary);
  background: #1e293b;
}

.lock-plan-label {
  font-size: 0.75rem;
  font-weight: 800;
  color: var(--learn-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 4px;
}

.lock-plan-price {
  font-size: 1.5rem;
  font-weight: 900;
  color: #ffffff;
}

.lock-plan-desc {
  font-size: 0.8125rem;
  color: #94a3b8;
  margin-top: 4px;
}

.lock-perks-list {
  list-style: none;
  padding: 0;
  margin: 0 0 28px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  text-align: left;
}

.lock-perk-item {
  font-size: 0.8125rem;
  color: #cbd5e1;
  display: flex;
  align-items: center;
  gap: 8px;
}

.lock-perk-item i {
  color: var(--learn-primary);
  font-size: 1rem;
}

.btn-lock-whatsapp {
  background: var(--learn-primary);
  color: #0f172a;
  font-weight: 900;
  font-size: 1.0625rem;
  padding: 14px 28px;
  border-radius: 30px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  box-shadow: 0 6px 20px rgba(130, 180, 64, 0.4);
  transition: all 0.25s ease;
}

.btn-lock-whatsapp:hover {
  background: var(--learn-primary-hover);
  transform: translateY(-2px);
  color: #0f172a;
}

.lock-secondary-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-top: 20px;
}

.lock-secondary-link {
  font-size: 0.8125rem;
  color: #94a3b8;
  text-decoration: none;
}

.lock-secondary-link:hover {
  color: #ffffff;
  text-decoration: underline;
}

/* Responsive Rules */
@media (max-width: 960px) {
  .lesson-split-container {
    grid-template-columns: 1fr;
    height: auto;
    overflow: visible;
  }
  .lesson-theory-panel {
    border-right: none;
    border-bottom: 1px solid #e2e8f0;
    padding: 24px 20px 40px;
  }
  .lesson-editor-panel {
    height: 700px;
  }
  .lock-pricing-grid,
  .lock-perks-list {
    grid-template-columns: 1fr;
  }
}

/* ==========================================================================
   MOBILE & RESPONSIVE EDUCATION HUB & CLASSROOM ENHANCEMENTS
========================================================================== */
@media (max-width: 768px) {
  /* Education Hub Home Hero */
  .edu-hero {
    padding: 36px 16px 40px !important;
  }
  .edu-hero-title {
    font-size: clamp(1.65rem, 5.5vw, 2.25rem) !important;
    line-height: 1.25 !important;
  }
  .edu-hero-subtext {
    font-size: 0.875rem !important;
    line-height: 1.55 !important;
  }
  
  /* Course detail hero */
  .course-detail-layout {
    grid-template-columns: 1fr !important;
    gap: 24px !important;
    margin: 20px auto 40px !important;
    padding: 0 14px !important;
  }
  .sticky-enroll-card {
    position: static !important;
    top: auto !important;
    padding: 20px 16px !important;
    box-shadow: 0 4px 16px rgba(0,0,0,0.06) !important;
  }
  .sticky-enroll-card a {
    width: 100% !important;
    justify-content: center !important;
    text-align: center !important;
  }
  
  /* Lesson Classroom Top Bar */
  .lesson-top-bar {
    height: auto !important;
    min-height: 54px !important;
    padding: 8px 12px !important;
    flex-wrap: wrap !important;
    gap: 8px !important;
  }
  .lesson-top-left {
    gap: 8px !important;
    max-width: 50% !important;
    overflow: hidden !important;
  }
  .lesson-course-title-top {
    font-size: 0.8125rem !important;
    white-space: nowrap !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
  }
  .lesson-top-center {
    order: 3 !important;
    width: 100% !important;
    justify-content: space-between !important;
    padding-top: 4px !important;
    border-top: 1px solid #1e293b !important;
  }
  .lesson-top-right {
    gap: 6px !important;
  }
  .btn-lesson-nav {
    padding: 6px 10px !important;
    font-size: 0.75rem !important;
  }
  .btn-lesson-nav span {
    display: none !important;
  }
  
  /* Lesson Split Layout */
  .lesson-split-container {
    grid-template-columns: 1fr !important;
    height: auto !important;
  }
  .lesson-theory-panel {
    padding: 18px 14px 28px !important;
  }
  .lesson-editor-panel {
    height: 620px !important;
  }
  .editor-action-bar {
    padding: 8px 10px !important;
    gap: 6px !important;
    flex-wrap: wrap !important;
  }
  .btn-run-code {
    padding: 8px 14px !important;
    font-size: 0.8125rem !important;
  }
  .btn-reset-code {
    padding: 8px 10px !important;
    font-size: 0.75rem !important;
  }
  
  /* Premium Lock Paywall View */
  .premium-lock-view {
    padding: 20px 12px !important;
  }
  .lock-card-box {
    padding: 24px 16px !important;
    margin: 0 auto !important;
    width: 100% !important;
    border-radius: 14px !important;
    box-sizing: border-box !important;
  }
  .lock-card-title {
    font-size: 1.35rem !important;
    line-height: 1.3 !important;
  }
  .lock-card-desc {
    font-size: 0.875rem !important;
    line-height: 1.5 !important;
    margin-bottom: 16px !important;
  }
  .lock-pricing-grid {
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }
  .lock-plan-card {
    padding: 14px 16px !important;
  }
  .btn-lock-whatsapp {
    width: 100% !important;
    justify-content: center !important;
    padding: 14px 16px !important;
    font-size: 0.9375rem !important;
    text-align: center !important;
    box-sizing: border-box !important;
    border-radius: 12px !important;
  }
  
  /* Quick Phone Unlock Form */
  .lock-paid-verify-box {
    padding: 16px 14px !important;
    margin-top: 18px !important;
    border-radius: 12px !important;
  }
  .lock-paid-verify-box form {
    flex-direction: column !important;
    gap: 10px !important;
  }
  .lock-paid-verify-box form > div {
    width: 100% !important;
  }
  .lock-paid-verify-box input[type="tel"] {
    height: 46px !important;
    font-size: 1rem !important;
    box-sizing: border-box !important;
  }
  .lock-paid-verify-box button[type="submit"] {
    width: 100% !important;
    height: 46px !important;
    font-size: 0.875rem !important;
    font-weight: 800 !important;
    justify-content: center !important;
    border-radius: 8px !important;
  }
  
  /* 3 Free Starter Jumper Links */
  .lock-free-jumpers-wrap {
    display: grid !important;
    grid-template-columns: 1fr !important;
    gap: 8px !important;
    width: 100% !important;
    margin: 14px 0 18px !important;
  }
  .lock-free-jumpers-wrap a {
    width: 100% !important;
    justify-content: center !important;
    padding: 8px 12px !important;
    box-sizing: border-box !important;
  }
  
  /* Comparison Table responsive scroll wrapper */
  .table-responsive-box {
    overflow-x: auto !important;
    -webkit-overflow-scrolling: touch !important;
    width: 100% !important;
    border-radius: 12px !important;
    border: 1px solid #e2e8f0 !important;
  }
  .table-responsive-box table {
    min-width: 580px !important;
  }
}

@media (max-width: 480px) {
  .edu-hero-cta-row {
    flex-direction: column !important;
    width: 100% !important;
    gap: 10px !important;
  }
  .edu-hero-cta-row button {
    width: 100% !important;
    justify-content: center !important;
    text-align: center !important;
  }
  .edu-cat-cards-grid {
    grid-template-columns: 1fr !important;
  }
  .courses-grid,
  .ebooks-grid,
  .cheatsheets-grid {
    grid-template-columns: 1fr !important;
  }
  .flagship-box {
    padding: 18px 14px !important;
  }
  .flagship-stat-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }
}