/* GitHub 101 - Open Source Learning Theme */
/* Modern Color Palette */
/* Designed for Open Source Development Learning */

@import url('https://fonts.googleapis.com/css2?family=Open+Sans:wght@300;400;500;600;700&family=Roboto:wght@400;500;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

/* ============================================
   MODERN DESIGN SYSTEM
   ============================================ */
:root {
  /* GitHub-Inspired Color Palette */
  /* Primary Colors */
  --primary-blue: #0071ce;           /* Primary Blue - Main brand color */
  --primary-blue-dark: #004c91;      /* Darker blue for depth */
  --primary-blue-light: #007dc6;     /* Lighter blue for hover states */
  
  /* Secondary Colors */
  --accent-yellow: #ffc220;         /* Accent Yellow - Highlight color */
  --accent-yellow-light: #ffd662;   /* Light yellow for highlights */
  --accent-yellow-dark: #f5b800;    /* Darker yellow for emphasis */
  
  /* Accent Blues (Brand Colors) */
  --bentonville-blue: #002d56;       /* Bentonville Blue - Typography */
  --everyday-blue: #76c3ec;          /* Everyday Blue - Hierarchy */
  --sky-blue: #a7cced;               /* Sky Blue - Secondary hierarchy */
  
  /* Base Colors */
  --neutral-white: #ffffff;       /* Pure white */
  --neutral-off-white: #f8f9fa;   /* Off-white for backgrounds */
  --neutral-light-gray: #f5f6f7;  /* Light gray for sections */
  --neutral-gray: #e1e4e8;        /* Gray for borders */
  --neutral-medium-gray: #6c757d; /* Text gray */
  --neutral-dark-gray: #495057;   /* Dark text */
  --neutral-charcoal: #2c3e50;    /* Very dark text */
  
  /* Semantic Colors */
  --success-green: #28a745;          /* Success states */
  --success-bg: #d4edda;             /* Success background */
  --warning-amber: #ffc107;          /* Warning states */
  --warning-bg: #fff3cd;             /* Warning background */
  --error-red: #dc3545;              /* Error states */
  --error-bg: #f8d7da;               /* Error background */
  --info-blue: #17a2b8;              /* Info states */
  --info-bg: #d1ecf1;                /* Info background */
  
  /* Typography - Modern Fonts */
  --font-primary: 'Open Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Roboto', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'IBM Plex Mono', 'Consolas', 'Monaco', monospace;
  
  /* Font Weights */
  --font-light: 300;
  --font-regular: 400;
  --font-medium: 500;
  --font-semibold: 600;
  --font-bold: 700;
  
  /* Font Sizes - Scaled for Readability */
  --text-xs: 0.75rem;    /* 12px */
  --text-sm: 0.875rem;   /* 14px */
  --text-base: 1rem;     /* 16px */
  --text-lg: 1.125rem;   /* 18px */
  --text-xl: 1.25rem;    /* 20px */
  --text-2xl: 1.5rem;    /* 24px */
  --text-3xl: 1.875rem;  /* 30px */
  --text-4xl: 2.25rem;   /* 36px */
  --text-5xl: 3rem;      /* 48px */
  
  /* Line Heights for Optimal Reading */
  --leading-tight: 1.25;
  --leading-normal: 1.5;
  --leading-relaxed: 1.75;
  --leading-loose: 2;
  
  /* Spacing Scale - Consistent Rhythm */
  --space-1: 0.25rem;    /* 4px */
  --space-2: 0.5rem;     /* 8px */
  --space-3: 0.75rem;    /* 12px */
  --space-4: 1rem;       /* 16px */
  --space-5: 1.25rem;    /* 20px */
  --space-6: 1.5rem;     /* 24px */
  --space-8: 2rem;       /* 32px */
  --space-10: 2.5rem;    /* 40px */
  --space-12: 3rem;      /* 48px */
  --space-16: 4rem;      /* 64px */
  
  /* Border Radius - Modern but Conservative */
  --radius-sm: 0.25rem;   /* 4px */
  --radius-md: 0.375rem;  /* 6px */
  --radius-lg: 0.5rem;    /* 8px */
  --radius-xl: 0.75rem;   /* 12px */
  --radius-2xl: 1rem;     /* 16px */
  --radius-full: 9999px;  /* Full round */
  
  /* Professional Shadows - Blue tinted */
  --shadow-sm: 0 1px 3px 0 rgba(0, 113, 206, 0.1), 0 1px 2px 0 rgba(0, 113, 206, 0.06);
  --shadow-md: 0 4px 6px -1px rgba(0, 113, 206, 0.1), 0 2px 4px -1px rgba(0, 113, 206, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 113, 206, 0.1), 0 4px 6px -2px rgba(0, 113, 206, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 113, 206, 0.1), 0 10px 10px -5px rgba(0, 113, 206, 0.04);
  --shadow-inner: inset 0 2px 4px 0 rgba(0, 113, 206, 0.06);
  
  /* Transitions - Smooth & Professional */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
  
  /* Layout Dimensions */
  --max-width: 1440px;      /* Wider for modern screens */
  --content-width: 72ch;     /* Optimal reading width */
  --sidebar-width: 300px;    /* Slightly wider for better navigation */
  --header-height: 64px;     /* Standard header height */
  
  /* Z-Index Scale */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal-backdrop: 1040;
  --z-modal: 1050;
  --z-popover: 1060;
  --z-tooltip: 1070;
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  /* Improve text rendering */
  text-rendering: optimizeLegibility;
}

body {
  font-family: var(--font-primary);
  font-weight: var(--font-regular);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--neutral-charcoal);
  background-color: var(--neutral-off-white);
  overflow-x: hidden;
  /* Better font rendering on Windows */
  -webkit-font-feature-settings: "kern" 1, "liga" 1;
  font-feature-settings: "kern" 1, "liga" 1;
}

/* ============================================
   TYPOGRAPHY - MODERN OPTIMIZED
   ============================================ */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: var(--font-semibold);
  line-height: var(--leading-tight);
  color: var(--bentonville-blue);
  margin-top: 0;
  margin-bottom: var(--space-4);
  /* Better kerning for headings */
  letter-spacing: -0.015em;
}

h1 {
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-6);
  /* Primary brand gradient */
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

h2 {
  font-size: var(--text-3xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-5);
  color: var(--primary-blue);
}

h3 {
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-4);
}

h4 {
  font-size: var(--text-xl);
  font-weight: var(--font-medium);
  margin-bottom: var(--space-3);
}

h5 {
  font-size: var(--text-lg);
  font-weight: var(--font-medium);
  margin-bottom: var(--space-3);
}

h6 {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-2);
}

/* Body Text */
p {
  margin-bottom: var(--space-4);
  color: var(--neutral-dark-gray);
  max-width: var(--content-width);
  line-height: var(--leading-relaxed);
}

/* Lead Paragraph - For introductions */
.lead {
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  color: var(--neutral-medium-gray);
  font-weight: var(--font-regular);
  margin-bottom: var(--space-6);
}

/* Strong emphasis */
strong, b {
  font-weight: var(--font-semibold);
  color: var(--neutral-charcoal);
}

/* Lists */
ul, ol {
  margin-bottom: var(--space-4);
  padding-left: var(--space-6);
  color: var(--neutral-dark-gray);
}

li {
  margin-bottom: var(--space-2);
  line-height: var(--leading-relaxed);
}

/* Links - Primary Brand Style */
a {
  color: var(--primary-blue);
  text-decoration: none;
  font-weight: var(--font-medium);
  transition: all var(--transition-fast);
  position: relative;
}

a:hover {
  color: var(--primary-blue-dark);
  text-decoration: underline;
  text-decoration-thickness: 2px;
  text-underline-offset: 2px;
}

a:focus {
  outline: 2px solid var(--accent-yellow);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* External Links Indicator */
a.external-link::after {
  content: "↗";
  margin-left: 0.25em;
  font-size: 0.875em;
  opacity: 0.7;
}

/* ============================================
   LAYOUT STRUCTURE
   ============================================ */
.app-container {
  display: flex;
  min-height: 100vh;
  max-width: var(--max-width);
  margin: 0 auto;
  background: var(--neutral-white);
  box-shadow: var(--shadow-xl);
}

/* ============================================
   SIDEBAR NAVIGATION - MODERN STYLE
   ============================================ */
.sidebar {
  width: var(--sidebar-width);
  background: linear-gradient(180deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
  padding: var(--space-6) 0;
  position: fixed;
  height: 100vh;
  overflow-y: auto;
  z-index: var(--z-fixed);
  /* Custom scrollbar for sidebar */
  scrollbar-width: thin;
  scrollbar-color: var(--primary-blue-light) transparent;
}

.sidebar::-webkit-scrollbar {
  width: 6px;
}

.sidebar::-webkit-scrollbar-track {
  background: transparent;
}

.sidebar::-webkit-scrollbar-thumb {
  background-color: var(--primary-blue-light);
  border-radius: var(--radius-full);
}

.sidebar-header {
  padding: 0 var(--space-6) var(--space-6);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  margin-bottom: var(--space-6);
}

/* Logo Section */
.logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.logo-icon {
  width: 48px;
  height: 48px;
  background: var(--neutral-white);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
  box-shadow: var(--shadow-md);
}

.education-logo {
  width: 100%;
  height: 100%;
  color: var(--primary-blue);
}

/* Keep github-logo styles for other uses */
.github-logo {
  width: 100%;
  height: 100%;
  color: var(--primary-blue);
}

.logo-text {
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--neutral-white);
  letter-spacing: -0.02em;
}

/* Version Info */
.version-info {
  padding-top: var(--space-3);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.version-label {
  font-size: var(--text-xs);
  color: var(--accent-yellow);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-1);
}

.updated-label {
  font-size: var(--text-xs);
  color: var(--sky-blue);
  font-weight: var(--font-regular);
}

.author-info {
  margin-top: var(--space-3);
  padding-top: var(--space-3);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.author-name {
  font-size: var(--text-xs);
  color: var(--accent-yellow);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-1);
}

.author-title {
  font-size: var(--text-xs);
  color: var(--sky-blue);
  font-weight: var(--font-regular);
  margin-bottom: var(--space-1);
}

.author-contact {
  font-size: var(--text-xs);
}

.author-contact a {
  color: rgba(255, 255, 255, 0.7);
  text-decoration: none;
  transition: color 0.3s ease;
}

.author-contact a:hover {
  color: var(--accent-yellow);
}

/* Navigation Menu */
.nav-menu {
  list-style: none;
  padding: 0 var(--space-4);
}

.nav-item {
  margin-bottom: var(--space-1);
}

.nav-link {
  display: flex;
  align-items: center;
  padding: var(--space-3) var(--space-4);
  color: rgba(255, 255, 255, 0.9);
  border-radius: var(--radius-md);
  transition: all var(--transition-base);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  position: relative;
  border: 2px solid transparent;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--neutral-white);
  text-decoration: none;
  transform: translateX(4px);
}

.nav-link.active {
  background: rgba(255, 255, 255, 0.15);
  color: var(--neutral-white);
  font-weight: var(--font-semibold);
  border-left: 3px solid var(--accent-yellow);
}

.nav-link:focus {
  outline: 2px solid var(--accent-yellow);
  outline-offset: -2px;
}

/* ============================================
   MAIN CONTENT AREA
   ============================================ */
.main-content {
  flex: 1;
  margin-left: calc(var(--sidebar-width) + var(--space-10));
  padding: var(--space-8) var(--space-10);
  background: var(--neutral-white);
  min-height: 100vh;
}

.section {
  display: none;
  animation: fadeIn var(--transition-base) ease-in;
  text-align: center;
}

/* Override center alignment for content that should be left-aligned */
.section .card,
.section .topic-section,
.section ol,
.section ul,
.section pre,
.section .code-example,
.section .practice-card,
.section .workflow-demo,
.section .interactive-demo {
  text-align: left;
}

.section.active {
  display: block;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Section Headers */
.section-header {
  background: linear-gradient(135deg, var(--neutral-off-white) 0%, var(--neutral-white) 100%);
  padding: var(--space-10) var(--space-10) var(--space-6);
  border-bottom: 2px solid var(--neutral-gray);
  margin-bottom: var(--space-8);
  margin-left: 0;
  margin-right: 0;
  text-align: center;
}

.section-header h2 {
  color: var(--primary-blue);
  margin-bottom: var(--space-3);
}

.section-header .lead {
  max-width: 100%;
  color: var(--neutral-medium-gray);
}

/* ============================================
   CARDS & CONTENT BLOCKS
   ============================================ */
.card {
  background: var(--neutral-white);
  border: 1px solid var(--neutral-gray);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  margin-bottom: var(--space-6);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  max-width: 100%;
}

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

.card-header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--neutral-gray);
}

.card-title {
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  color: var(--primary-blue);
  margin: 0;
}

.card-content {
  color: var(--neutral-dark-gray);
  line-height: var(--leading-relaxed);
}

/* ============================================
   BUTTONS - MODERN STYLE
   ============================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-3) var(--space-6);
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  line-height: 1;
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-base);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
  font-family: var(--font-primary);
}

.btn:focus {
  outline: 2px solid var(--accent-yellow);
  outline-offset: 2px;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* Primary Button */
.btn-primary {
  background: var(--primary-blue);
  color: var(--neutral-white);
  border-color: var(--primary-blue);
}

.btn-primary:hover {
  background: var(--primary-blue-dark);
  border-color: var(--primary-blue-dark);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

/* Secondary Button */
.btn-secondary {
  background: var(--neutral-white);
  color: var(--primary-blue);
  border-color: var(--primary-blue);
}

.btn-secondary:hover {
  background: var(--neutral-off-white);
  color: var(--primary-blue-dark);
  border-color: var(--primary-blue-dark);
}

/* Success Button */
.btn-success {
  background: var(--success-green);
  color: var(--neutral-white);
  border-color: var(--success-green);
}

.btn-success:hover {
  background: var(--success-green);
  border-color: var(--success-green);
  filter: brightness(0.9);
}

/* ============================================
   CODE BLOCKS - USER FRIENDLY
   ============================================ */
pre {
  background: var(--bentonville-blue);
  color: var(--neutral-white);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  overflow-x: auto;
  margin-bottom: var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  /* Custom scrollbar for code blocks */
  scrollbar-width: thin;
  scrollbar-color: var(--primary-blue-light) transparent;
}

pre::-webkit-scrollbar {
  height: 8px;
}

pre::-webkit-scrollbar-track {
  background: transparent;
}

pre::-webkit-scrollbar-thumb {
  background-color: var(--primary-blue-light);
  border-radius: var(--radius-full);
}

code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  padding: 0.125em 0.25em;
  background: var(--neutral-light-gray);
  color: var(--primary-blue);
  border-radius: var(--radius-sm);
}

pre code {
  background: transparent;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

/* ============================================
   FORMS - MODERN STYLE
   ============================================ */
.form-group {
  margin-bottom: var(--space-4);
}

.form-label {
  display: block;
  margin-bottom: var(--space-2);
  font-size: var(--text-sm);
  font-weight: var(--font-medium);
  color: var(--neutral-charcoal);
}

.form-control {
  width: 100%;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-base);
  font-family: var(--font-primary);
  color: var(--neutral-charcoal);
  background: var(--neutral-white);
  border: 2px solid var(--neutral-gray);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(0, 113, 206, 0.1);
}

.form-control:disabled {
  background: var(--neutral-light-gray);
  cursor: not-allowed;
  opacity: 0.6;
}

/* ============================================
   ALERTS & NOTIFICATIONS
   ============================================ */
.alert {
  padding: var(--space-4) var(--space-5);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
  border-left: 4px solid;
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
}

.alert-info {
  background: var(--info-bg);
  border-color: var(--info-blue);
  color: var(--bentonville-blue);
}

.alert-success {
  background: var(--success-bg);
  border-color: var(--success-green);
  color: var(--bentonville-blue);
}

.alert-warning {
  background: var(--warning-bg);
  border-color: var(--warning-amber);
  color: var(--bentonville-blue);
}

.alert-error {
  background: var(--error-bg);
  border-color: var(--error-red);
  color: var(--bentonville-blue);
}

/* ============================================
   TABLES - DATA DISPLAY
   ============================================ */
.table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--space-6);
  background: var(--neutral-white);
  box-shadow: var(--shadow-sm);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.table th {
  background: var(--primary-blue);
  color: var(--neutral-white);
  font-weight: var(--font-semibold);
  text-align: left;
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table td {
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--neutral-gray);
  color: var(--neutral-dark-gray);
  font-size: var(--text-sm);
}

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

.table tr:hover {
  background: var(--neutral-off-white);
}

/* ============================================
   HERO SECTION - MODERN LANDING
   ============================================ */
.hero {
  position: relative;
  padding: var(--space-12) var(--space-8);
  margin: calc(-1 * var(--space-8)) calc(-1 * var(--space-10)) var(--space-8);
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-dark) 100%);
  color: var(--neutral-white);
  text-align: center;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  opacity: 0.3;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 800px;
  margin: 0 auto;
}

.hero h1 {
  font-size: var(--text-5xl);
  margin-bottom: var(--space-6);
  color: var(--neutral-white);
  background: none;
  -webkit-text-fill-color: currentColor;
}

.hero .lead {
  font-size: var(--text-xl);
  color: var(--neutral-white);
  margin-bottom: var(--space-8);
  opacity: 0.95;
}

/* ============================================
   ACCESSIBILITY IMPROVEMENTS
   ============================================ */
/* Focus visible for keyboard navigation */
*:focus-visible {
  outline: 2px solid var(--accent-yellow);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Skip to main content link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--primary-blue);
  color: var(--neutral-white);
  padding: var(--space-2) var(--space-4);
  text-decoration: none;
  z-index: var(--z-tooltip);
}

.skip-link:focus {
  top: 0;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
  :root {
    --primary-blue: var(--primary-blue-dark);
    --accent-yellow: var(--accent-yellow-dark);
    --neutral-white: #ffffff;
    --neutral-gray: var(--neutral-medium-gray);
    --bentonville-blue: #000000;
    --neutral-charcoal: #000000;
  }
}

/* ============================================
   RESPONSIVE DESIGN
   ============================================ */
@media (max-width: 1024px) {
  :root {
    --sidebar-width: 260px;
  }
  
  .hero h1 {
    font-size: var(--text-4xl);
  }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    transition: transform var(--transition-base);
  }
  
  .sidebar.open {
    transform: translateX(0);
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .hero {
    padding: var(--space-12) var(--space-6);
  }
  
  .hero h1 {
    font-size: var(--text-3xl);
  }
}

@media (max-width: 480px) {
  :root {
    --text-base: 0.875rem;
  }
  
  .hero h1 {
    font-size: var(--text-2xl);
  }
  
  .btn {
    width: 100%;
    margin-bottom: var(--space-2);
  }
  
  /* Force single column layout on mobile */
  .feature-grid,
  .setup-options,
  .comparison-cards {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  
  .feature-card,
  .setup-card,
  .comparison-card {
    padding: var(--space-4);
  }
  
  /* Concept Explanation mobile adjustments */
  .evolution-step {
    flex-direction: column;
    gap: var(--space-3);
    padding: var(--space-4);
  }
  
  .step-badge {
    align-self: flex-start;
    min-width: 50px;
  }
  
  .code-example {
    font-size: var(--text-xs);
  }
  
  /* Concept Cards mobile adjustments */
  .concept-grid {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  
  .concept-card {
    padding: var(--space-6);
  }
  
  .concept-card h3 {
    font-size: var(--text-xl);
  }
  
  .concept-card p {
    font-size: var(--text-base);
  }
  
  .basic-workflow {
    padding: var(--space-6);
  }
  
  .basic-workflow h3 {
    font-size: var(--text-2xl);
  }
  
  /* Collaboration page mobile adjustments */
  .git-workflow-visual {
    flex-direction: column;
    gap: var(--space-3);
    padding: var(--space-4);
  }
  
  .workflow-step {
    min-width: auto;
    width: 100%;
  }
  
  .workflow-arrow {
    transform: rotate(90deg);
    font-size: var(--text-xl);
  }
  
  .card {
    padding: var(--space-6);
  }
  
  .card h3 {
    font-size: var(--text-xl);
  }
  
  .card p {
    font-size: var(--text-base);
  }
}

/* Quiz Section Link Buttons */
.btn-section-link {
  background: var(--gradient-primary);
  color: white;
  border: none;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--border-radius);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all 0.3s ease;
  margin-left: var(--space-2);
}

.btn-section-link:hover {
  background: var(--gradient-secondary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.section-link {
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
}

/* Interactive Quiz Components */
.interactive-component {
  background: var(--color-surface);
  border-radius: var(--border-radius);
  padding: var(--space-6);
  margin: var(--space-4) 0;
}

.interactive-component .scenario {
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  padding: var(--space-4);
  border-radius: var(--border-radius);
  margin-bottom: var(--space-4);
  border-left: 4px solid var(--color-primary);
}

.interactive-component .scenario h4 {
  margin: 0 0 var(--space-2) 0;
  color: var(--color-primary);
}

.workflow-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.workflow-step {
  background: white;
  padding: var(--space-4);
  border-radius: var(--border-radius);
  border: 1px solid #e2e8f0;
}

.workflow-step label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--color-text);
}

.cmd-input {
  width: 100%;
  padding: var(--space-3);
  border: 2px solid #e2e8f0;
  border-radius: var(--border-radius);
  font-family: 'Fira Code', monospace;
  font-size: var(--text-sm);
  background: #f8fafc;
  transition: all 0.3s ease;
}

.cmd-input:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(139, 92, 246, 0.1);
}

.feedback {
  margin-top: var(--space-2);
  padding: var(--space-2);
  border-radius: var(--border-radius);
  font-size: var(--text-sm);
}

.feedback.correct {
  background: #dcfce7;
  color: #166534;
  border: 1px solid #bbf7d0;
}

.feedback.incorrect {
  background: #fee2e2;
  color: #991b1b;
  border: 1px solid #fca5a5;
}

.feedback code {
  background: rgba(0, 0, 0, 0.1);
  padding: 2px 4px;
  border-radius: 3px;
  font-family: 'Fira Code', monospace;
}

.btn-check {
  background: var(--gradient-primary);
  color: white;
  border: none;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--border-radius);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  margin-top: var(--space-4);
}

.btn-check:hover {
  background: var(--gradient-secondary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.3);
}

.gitignore-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-3);
  margin: var(--space-4) 0;
}

.gitignore-options label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3);
  background: white;
  border: 1px solid #e2e8f0;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: all 0.3s ease;
  font-family: 'Fira Code', monospace;
  font-size: var(--text-sm);
}

.gitignore-options label:hover {
  border-color: var(--color-primary);
  background: #f8fafc;
}

.gitignore-options input[type="checkbox"] {
  width: 16px;
  height: 16px;
}

.gitignore-preview {
  margin-top: var(--space-4);
  padding: var(--space-4);
  background: #f8fafc;
  border-radius: var(--border-radius);
  border: 1px solid #e2e8f0;
}

.gitignore-preview h5 {
  margin: 0 0 var(--space-2) 0;
  color: var(--color-text);
}

.gitignore-content {
  background: #1e293b;
  color: #e2e8f0;
  padding: var(--space-3);
  border-radius: var(--border-radius);
  font-family: 'Fira Code', monospace;
  font-size: var(--text-sm);
  margin: 0;
  white-space: pre-wrap;
}

/* ============================================
   PRINT STYLES
   ============================================ */
@media print {
  .sidebar,
  .btn,
  .nav-menu {
    display: none;
  }
  
  .main-content {
    margin-left: 0;
  }
  
  body {
    font-size: 12pt;
    line-height: 1.5;
    color: black;
    background: white;
  }
  
  a {
    color: black;
    text-decoration: underline;
  }
  
  a[href^="http"]:after {
    content: " (" attr(href) ")";
  }
}

/* ============================================
   INTERACTIVE GIT SIMULATOR - HANDS-ON LEARNING
   ============================================ */
.git-simulator {
  background: var(--neutral-white);
  border: 2px solid var(--primary-blue);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin: var(--space-8) 0;
  box-shadow: var(--shadow-lg);
}

.simulator-header {
  text-align: center;
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 2px solid var(--neutral-gray);
}

.simulator-header h4 {
  color: var(--primary-blue);
  margin-bottom: var(--space-2);
}

.simulator-status {
  background: var(--accent-yellow);
  color: var(--bentonville-blue);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-weight: var(--font-semibold);
  font-size: var(--text-sm);
}

.git-areas {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.git-area {
  background: var(--neutral-off-white);
  border: 2px solid var(--neutral-gray);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  min-height: 200px;
  transition: all var(--transition-base);
}

.git-area.working-directory {
  border-color: var(--warning-amber);
  background: linear-gradient(135deg, rgba(255, 193, 7, 0.05), var(--neutral-off-white));
}

.git-area.staging-area {
  border-color: var(--primary-blue);
  background: linear-gradient(135deg, rgba(0, 113, 206, 0.05), var(--neutral-off-white));
}

.git-area.repository {
  border-color: var(--success-green);
  background: linear-gradient(135deg, rgba(40, 167, 69, 0.05), var(--neutral-off-white));
}

.git-area h5 {
  color: var(--primary-blue);
  margin-bottom: var(--space-2);
  font-size: var(--text-lg);
}

.area-desc {
  color: var(--neutral-medium-gray);
  font-size: var(--text-sm);
  margin-bottom: var(--space-4);
}

.file-list {
  min-height: 120px;
  position: relative;
}

.file-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  background: var(--neutral-white);
  border: 1px solid var(--neutral-gray);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
  cursor: grab;
  transition: all var(--transition-base);
  user-select: none;
}

.file-item:hover {
  border-color: var(--primary-blue);
  box-shadow: var(--shadow-sm);
  transform: translateY(-1px);
}

.file-item:active {
  cursor: grabbing;
  transform: scale(1.02);
}

.file-item.dragging {
  opacity: 0.7;
  transform: rotate(3deg) scale(1.05);
  z-index: var(--z-modal);
}

.file-icon {
  font-size: var(--text-lg);
  flex-shrink: 0;
}

.file-name {
  font-family: var(--font-mono);
  font-weight: var(--font-medium);
  color: var(--neutral-charcoal);
  flex-grow: 1;
}

.file-status {
  font-size: var(--text-xs);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.file-status.modified {
  background: rgba(255, 193, 7, 0.2);
  color: var(--warning-amber);
}

.file-status.new {
  background: rgba(40, 167, 69, 0.2);
  color: var(--success-green);
}

.file-status.staged {
  background: rgba(0, 113, 206, 0.2);
  color: var(--primary-blue);
}

.empty-state {
  text-align: center;
  padding: var(--space-8);
  color: var(--neutral-medium-gray);
  border: 2px dashed var(--neutral-gray);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
}

.empty-state.drag-over {
  border-color: var(--primary-blue);
  background: rgba(0, 113, 206, 0.05);
  color: var(--primary-blue);
}

.empty-icon {
  font-size: var(--text-3xl);
  display: block;
  margin-bottom: var(--space-2);
}

.commit-item {
  background: var(--neutral-white);
  border: 1px solid var(--neutral-gray);
  border-radius: var(--radius-md);
  padding: var(--space-3);
  margin-bottom: var(--space-2);
}

.commit-hash {
  font-family: var(--font-mono);
  background: var(--neutral-gray);
  color: var(--neutral-charcoal);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  margin-right: var(--space-2);
}

.commit-message {
  color: var(--neutral-charcoal);
  font-weight: var(--font-medium);
}

.commit-files {
  margin-top: var(--space-2);
}

.command-practice {
  background: var(--bentonville-blue);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-6);
  color: var(--neutral-white);
}

.command-practice h5 {
  color: var(--neutral-white);
  margin-bottom: var(--space-4);
}

.command-input-area {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: rgba(0, 0, 0, 0.3);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-4);
}

.terminal-prompt {
  color: var(--accent-yellow);
  font-family: var(--font-mono);
  font-weight: var(--font-bold);
  font-size: var(--text-lg);
}

.command-input {
  flex-grow: 1;
  background: transparent;
  border: none;
  color: var(--neutral-white);
  font-family: var(--font-mono);
  font-size: var(--text-base);
  padding: var(--space-2);
}

.command-input:focus {
  outline: none;
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
}

.command-input::placeholder {
  color: var(--sky-blue);
}

.command-hints {
  margin-bottom: var(--space-4);
}

.command-hints p {
  color: var(--sky-blue);
  margin-bottom: var(--space-3);
}

.hint-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.hint-btn {
  background: rgba(255, 194, 32, 0.2);
  color: var(--accent-yellow);
  border: 1px solid var(--accent-yellow);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  cursor: pointer;
  transition: all var(--transition-base);
}

.hint-btn:hover {
  background: var(--accent-yellow);
  color: var(--bentonville-blue);
}

.command-output {
  background: rgba(0, 0, 0, 0.4);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  max-height: 200px;
  overflow-y: auto;
  min-height: 100px;
}

.achievement-panel {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  color: var(--neutral-white);
}

.achievement-panel h5 {
  color: var(--neutral-white);
  margin-bottom: var(--space-4);
  text-align: center;
}

.achievements {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-4);
}

.achievement {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  background: rgba(255, 255, 255, 0.1);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  border: 2px solid transparent;
  transition: all var(--transition-base);
}

.achievement.locked {
  opacity: 0.5;
}

.achievement.unlocked {
  border-color: var(--accent-yellow);
  background: rgba(255, 194, 32, 0.2);
  animation: achievement-unlock 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

@keyframes achievement-unlock {
  0% {
    transform: scale(0.9);
    opacity: 0;
  }
  50% {
    transform: scale(1.1);
  }
  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.achievement-icon {
  font-size: var(--text-xl);
  flex-shrink: 0;
}

.achievement-name {
  font-weight: var(--font-semibold);
  color: var(--neutral-white);
}

.achievement small {
  color: var(--sky-blue);
  font-size: var(--text-xs);
}

.simulator-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-6);
  border-top: 2px solid var(--neutral-gray);
  margin-top: var(--space-6);
}

.demo-description {
  text-align: center;
  color: var(--neutral-medium-gray);
  font-size: var(--text-lg);
  margin-bottom: var(--space-6);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

/* Responsive adjustments for git simulator */
@media (max-width: 768px) {
  .git-areas {
    grid-template-columns: 1fr;
    gap: var(--space-4);
  }
  
  .git-area {
    padding: var(--space-4);
    min-height: 150px;
  }
  
  .simulator-controls {
    flex-direction: column;
    gap: var(--space-3);
  }
  
  .achievements {
    grid-template-columns: 1fr;
  }
  
  .command-input-area {
    flex-direction: column;
    align-items: stretch;
  }
  
  .hint-buttons {
    justify-content: center;
  }
}


/* ============================================
   LOADING STATES
   ============================================ */
.loading {
  position: relative;
  pointer-events: none;
  opacity: 0.6;
}

.loading::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 24px;
  height: 24px;
  margin: -12px 0 0 -12px;
  border: 3px solid var(--primary-blue);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ============================================
   MISSING COMPONENT STYLING - BRANDED
   ============================================ */
/* Analogy Section */
.analogy-section {
  background: var(--neutral-off-white);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin: var(--space-8) 0;
  border: 1px solid var(--neutral-gray);
  text-align: center;
}

.analogy-section h3 {
  text-align: center;
  color: var(--primary-blue);
  margin-bottom: var(--space-4);
}

.analogy-section p {
  text-align: center;
  max-width: 100%;
  margin: 0 auto;
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-6);
  margin: var(--space-8) 0;
}

.feature-card {
  background: var(--neutral-white);
  border: 2px solid var(--neutral-gray);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  text-align: center;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.feature-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, transparent, rgba(0, 113, 206, 0.03), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.feature-card:hover {
  border-color: var(--primary-blue);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.feature-card:hover::before {
  opacity: 1;
}

.feature-card h3 {
  color: var(--primary-blue);
  font-size: var(--text-xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-3);
  position: relative;
  z-index: 1;
}

.feature-card p {
  color: var(--neutral-dark-gray);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  margin: 0;
  position: relative;
  z-index: 1;
}

.feature-card:hover h3 {
  color: var(--primary-blue-dark);
  transform: scale(1.02);
}

.feature-card:hover p {
  color: var(--bentonville-blue);
}

.feature-icon {
  width: 64px;
  height: 64px;
  margin: 0 auto var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
  border-radius: var(--radius-full);
  color: var(--neutral-white);
  box-shadow: var(--shadow-md);
  transition: all var(--transition-base);
  position: relative;
  z-index: 1;
}

.feature-icon svg {
  width: 32px;
  height: 32px;
  stroke: currentColor;
}

.feature-card:hover .feature-icon {
  background: linear-gradient(135deg, var(--accent-yellow), var(--accent-yellow-light));
  color: var(--bentonville-blue);
  transform: scale(1.1);
  box-shadow: var(--shadow-lg);
}

/* Setup Options */
.setup-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
  margin: var(--space-8) 0;
}

.setup-option {
  background: var(--neutral-white);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
  border: 2px solid var(--neutral-gray);
}

.setup-option.essential {
  border-color: var(--primary-blue);
  background: linear-gradient(135deg, rgba(0, 113, 206, 0.05), var(--neutral-white));
}

.setup-option.optional {
  border-color: var(--accent-yellow);
  background: linear-gradient(135deg, rgba(255, 194, 32, 0.05), var(--neutral-white));
}

/* Install Options */
.install-options {
  margin: var(--space-6) 0;
  display: grid;
  gap: var(--space-4);
}

.option {
  background: var(--neutral-white);
  border: 1px solid var(--neutral-gray);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
}

.option.recommended {
  border-color: var(--primary-blue);
  background: linear-gradient(135deg, rgba(0, 113, 206, 0.05), var(--neutral-white));
}

.option h5 {
  color: var(--primary-blue);
  margin-bottom: var(--space-2);
  font-size: var(--text-base);
}

/* Verification Section */
.verification {
  background: rgba(255, 194, 32, 0.1);
  border: 2px solid var(--accent-yellow);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin: var(--space-6) 0;
}

.verification h5 {
  color: var(--primary-blue-dark);
  margin-bottom: var(--space-3);
}

/* Repository Options */
.repository-options {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-8);
  margin: var(--space-8) 0;
}

.option-section {
  background: var(--neutral-white);
  border: 2px solid var(--neutral-gray);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
}

.option-header {
  color: var(--primary-blue);
  background: var(--neutral-off-white);
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-lg);
  margin: calc(-1 * var(--space-6)) calc(-1 * var(--space-6)) var(--space-4);
  border-bottom: 2px solid var(--primary-blue);
}

.option-content {
  line-height: var(--leading-relaxed);
}

/* Comparison Features */
.comparison-features {
  list-style: none;
  padding: 0;
  margin: var(--space-4) 0;
}

.comparison-features li {
  padding: var(--space-2) 0;
  border-bottom: 1px solid var(--neutral-gray);
  color: var(--bentonville-blue);
  font-weight: var(--font-medium);
}

.comparison-features li:last-child {
  border-bottom: none;
}

.comparison-features li::before {
  content: '✓';
  margin-right: var(--space-2);
  color: var(--accent-yellow);
  font-weight: var(--font-bold);
}

.comparison-type {
  background: rgba(255, 255, 255, 0.2);
  color: rgba(255, 255, 255, 0.95);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-weight: var(--font-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Network Requirements - Critical Security Section */
.network-requirement {
  background: linear-gradient(135deg, rgba(220, 53, 69, 0.1), rgba(255, 193, 7, 0.1));
  border: 2px solid var(--error-red);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin: var(--space-6) 0;
  position: relative;
  overflow: hidden;
}

.network-requirement::before {
  content: '🚨';
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  font-size: var(--text-3xl);
  opacity: 0.3;
}

.network-requirement h5 {
  color: var(--error-red);
  font-weight: var(--font-bold);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.requirement-item {
  display: flex;
  gap: var(--space-4);
  align-items: flex-start;
}

.requirement-item.critical {
  background: var(--neutral-white);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--error-red);
  box-shadow: var(--shadow-sm);
}

.requirement-icon {
  font-size: var(--text-2xl);
  flex-shrink: 0;
  margin-top: var(--space-1);
}

.requirement-content strong {
  color: var(--error-red);
  font-weight: var(--font-bold);
  display: block;
  margin-bottom: var(--space-2);
}

.requirement-content ul {
  margin: var(--space-3) 0;
  padding-left: var(--space-6);
}

.requirement-content li {
  margin-bottom: var(--space-2);
  color: var(--neutral-charcoal);
}

.network-note {
  background: rgba(220, 53, 69, 0.1);
  color: var(--error-red);
  font-weight: var(--font-medium);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-sm);
  margin-top: var(--space-3);
  font-style: normal;
  border-left: 3px solid var(--error-red);
}

/* Setup Instructions */
.setup-instructions {
  background: var(--neutral-off-white);
  border: 1px solid var(--neutral-gray);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin: var(--space-6) 0;
}

.setup-instructions h5 {
  color: var(--primary-blue);
  margin-bottom: var(--space-4);
  font-weight: var(--font-semibold);
}

.setup-instructions ol {
  counter-reset: step-counter;
  list-style: none;
  padding: 0;
}

.setup-instructions li {
  counter-increment: step-counter;
  margin-bottom: var(--space-3);
  padding-left: var(--space-8);
  position: relative;
  line-height: var(--leading-relaxed);
}

.setup-instructions li::before {
  content: counter(step-counter);
  position: absolute;
  left: 0;
  top: 0;
  background: var(--primary-blue);
  color: var(--neutral-white);
  width: var(--space-6);
  height: var(--space-6);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: var(--font-bold);
}

/* Network Connectivity Check */
.network-check {
  background: var(--neutral-white);
  border: 2px solid var(--primary-blue);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin: var(--space-6) 0;
}

.network-check h5 {
  color: var(--primary-blue);
  margin-bottom: var(--space-4);
  font-weight: var(--font-semibold);
}

.check-steps {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.check-item {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-4);
  background: var(--neutral-off-white);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--primary-blue);
}

.check-number {
  background: var(--primary-blue);
  color: var(--neutral-white);
  width: var(--space-6);
  height: var(--space-6);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-bold);
  font-size: var(--text-sm);
  flex-shrink: 0;
}

.check-content {
  flex-grow: 1;
}

.check-content strong {
  color: var(--primary-blue);
  display: block;
  margin-bottom: var(--space-2);
  font-weight: var(--font-semibold);
}

.check-content pre {
  margin: var(--space-3) 0;
  font-size: var(--text-sm);
}

.check-content p {
  margin: var(--space-2) 0;
  color: var(--neutral-dark-gray);
}

/* Troubleshooting Section */
.troubleshooting {
  background: rgba(255, 194, 32, 0.1);
  border: 1px solid var(--accent-yellow);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin: var(--space-6) 0;
}

.troubleshooting h5 {
  color: var(--primary-blue);
  margin-bottom: var(--space-4);
  font-weight: var(--font-semibold);
}

.troubleshoot-sections {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.troubleshoot-item {
  background: var(--neutral-white);
  padding: var(--space-4);
  border-radius: var(--radius-md);
  border-left: 3px solid var(--accent-yellow);
}

.troubleshoot-item strong {
  color: var(--bentonville-blue);
  display: block;
  margin-bottom: var(--space-3);
  font-weight: var(--font-semibold);
}

.troubleshoot-item ul {
  margin: 0;
  padding-left: var(--space-6);
}

.troubleshoot-item li {
  margin-bottom: var(--space-2);
  color: var(--neutral-dark-gray);
  line-height: var(--leading-relaxed);
}

/* Config Explanation */
.config-explanation {
  background: rgba(0, 113, 206, 0.05);
  border-left: 3px solid var(--primary-blue);
  padding: var(--space-4);
  margin: var(--space-6) 0;
  border-radius: var(--radius-md);
}

.config-explanation h5 {
  color: var(--primary-blue);
  margin-bottom: var(--space-3);
  font-size: var(--text-base);
}

.config-explanation ul {
  margin: 0;
  padding-left: var(--space-6);
}

.config-explanation li {
  margin-bottom: var(--space-2);
  color: var(--neutral-dark-gray);
}

/* Responsive adjustments for network requirements */
@media (max-width: 768px) {
  .requirement-item {
    flex-direction: column;
    gap: var(--space-3);
  }
  
  .check-item {
    flex-direction: column;
    gap: var(--space-3);
  }
  
  .network-requirement::before {
    display: none;
  }
  
  .setup-instructions li {
    padding-left: var(--space-6);
  }
  
  .setup-instructions li::before {
    width: var(--space-5);
    height: var(--space-5);
    font-size: var(--text-xs);
  }
}

/* Tool Introduction */
.tool-intro {
  background: var(--neutral-white);
  border: 2px solid var(--neutral-gray);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin: var(--space-8) 0;
  box-shadow: var(--shadow-sm);
}

.tool-benefits h4 {
  color: var(--primary-blue);
  margin-bottom: var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.tool-benefits h4::before {
  content: '✨';
  font-size: var(--text-lg);
}

.tool-benefits ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.tool-benefits li {
  padding: var(--space-2) 0;
  color: var(--neutral-dark-gray);
  position: relative;
  padding-left: var(--space-6);
}

.tool-benefits li::before {
  content: '▸';
  position: absolute;
  left: 0;
  color: var(--accent-yellow);
  font-weight: var(--font-bold);
}

/* Version Timeline */
.version-timeline {
  background: var(--neutral-off-white);
  border: 1px solid var(--neutral-gray);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin: var(--space-8) 0;
  position: relative;
  overflow: hidden;
}

.version-timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: linear-gradient(180deg, var(--primary-blue), var(--accent-yellow));
}

.version-timeline h3 {
  color: var(--primary-blue);
  margin-left: var(--space-4);
}

.timeline-item {
  display: flex;
  gap: var(--space-4);
  margin: var(--space-4) 0;
  padding-left: var(--space-8);
  position: relative;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -2px;
  top: 0.5rem;
  width: 8px;
  height: 8px;
  background: var(--accent-yellow);
  border-radius: 50%;
  border: 2px solid var(--primary-blue);
}

.timeline-year {
  font-weight: var(--font-semibold);
  color: var(--primary-blue);
  min-width: 80px;
}

.timeline-event {
  color: var(--neutral-dark-gray);
  line-height: var(--leading-relaxed);
}

/* ============================================
   CONTENT SECTIONS - COMPREHENSIVE SPACING
   ============================================ */
.setup-content,
.comparison-cards,
.workflow-section,
.content-section,
.interactive-demo,
.version-timeline,
.git-fundamentals,
.branching-section,
.collaboration-section,
.advanced-section,
.best-practices-section,
.final-quiz-section {
  padding: 0;
  margin: 0 0 var(--space-12) 0;
}

/* Major content blocks */
.section-content,
.tool-intro,
.quiz-intro,
.demo-section,
.workflow-demo,
.feature-showcase,
.practice-exercises {
  margin-bottom: var(--space-12);
}

/* Interactive elements that need space from navigation */
.checklist,
.quiz-container,
.certificate-display,
.terminal,
.git-workflow-visual,
.workflow-steps,
.code-demo,
.practice-section {
  margin-bottom: var(--space-12);
}

.setup-step,
.comparison-card {
  background: var(--neutral-white);
  border: 1px solid var(--neutral-gray);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  margin-bottom: var(--space-4);
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.comparison-card .comparison-features {
  background: var(--neutral-white);
  position: relative;
  z-index: 1;
}

.step-header {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-bottom: var(--space-4);
  padding-bottom: var(--space-3);
  border-bottom: 2px solid var(--neutral-gray);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--accent-yellow);
  color: var(--bentonville-blue);
  font-weight: var(--font-bold);
  border-radius: var(--radius-full);
  flex-shrink: 0;
}

.step-content {
  padding-top: var(--space-2);
}

.comparison-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--space-6);
  margin-top: var(--space-6);
}

.comparison-header {
  padding: var(--space-4);
  margin: calc(-1 * var(--space-6)) calc(-1 * var(--space-6)) var(--space-4);
  border-radius: var(--radius-lg) var(--radius-lg) 0 0;
  text-align: center;
}

.comparison-header.git {
  background: linear-gradient(135deg, var(--bentonville-blue) 0%, var(--primary-blue-dark) 100%);
  color: var(--neutral-white);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.comparison-header.github {
  background: linear-gradient(135deg, var(--primary-blue) 0%, var(--primary-blue-light) 100%);
  color: var(--neutral-white);
  text-shadow: 0 1px 2px rgba(0, 0, 0, 0.3);
}

.comparison-header h3,
.comparison-header .comparison-type {
  color: var(--neutral-white);
  text-shadow: inherit;
}

/* ============================================
   PROGRESS INDICATOR
   ============================================ */
.progress-container {
  position: fixed;
  top: 0;
  left: var(--sidebar-width);
  right: 0;
  height: 3px;
  background: rgba(0, 113, 206, 0.1);
  z-index: var(--z-sticky);
}

.progress-bar {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-blue), var(--accent-yellow));
  width: 0%;
  transition: width var(--transition-slow);
}

/* ============================================
   WORKFLOW VISUALIZATIONS
   ============================================ */
.git-workflow-visual {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
  margin: var(--space-8) 0;
  position: relative;
  background: var(--neutral-off-white);
  padding: var(--space-6);
  border-radius: var(--radius-xl);
  border: 1px solid var(--neutral-gray);
}

.git-workflow-visual::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(45deg, transparent 49%, var(--neutral-gray) 50%, transparent 51%);
  opacity: 0.3;
}

.workflow-step {
  background: var(--neutral-white);
  border-radius: var(--radius-xl);
  padding: var(--space-3) var(--space-4);
  box-shadow: var(--shadow-sm);
  text-align: center;
  font-weight: var(--font-medium);
  font-size: var(--text-sm);
  color: var(--primary-blue);
  border: 2px solid var(--primary-blue);
  position: relative;
  z-index: 1;
}

.workflow-arrow {
  color: var(--primary-blue);
  font-size: 1.25rem;
  margin: 0 var(--space-2);
  flex-shrink: 0;
}

/* ============================================
   TERMINAL STYLING - BRANDED
   ============================================ */
.terminal {
  background: var(--bentonville-blue);
  color: var(--neutral-white);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: 1.6;
  margin: var(--space-6) 0;
  box-shadow: var(--shadow-lg);
  border: 2px solid var(--primary-blue);
  position: relative;
  overflow: hidden;
}

.terminal::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: var(--space-8);
  background: var(--primary-blue);
  display: flex;
  align-items: center;
  padding: 0 var(--space-4);
}

.terminal::after {
  content: '● ● ●';
  position: absolute;
  top: var(--space-2);
  left: var(--space-4);
  color: var(--accent-yellow);
  font-size: var(--text-xs);
  z-index: 1;
}

.terminal-content {
  margin-top: var(--space-8);
  line-height: 1.6;
  white-space: pre-wrap;
  word-wrap: break-word;
  max-height: 350px;
  overflow-y: auto;
}

.terminal-content > div {
  margin: 2px 0;
}

.terminal-prompt {
  color: var(--accent-yellow);
}

.terminal-command {
  color: var(--neutral-white);
}

.terminal-output {
  color: var(--sky-blue);
  margin-top: var(--space-2);
}

/* Terminal scrollbar styling */
.terminal::-webkit-scrollbar,
.terminal-content::-webkit-scrollbar {
  width: 8px;
}

.terminal::-webkit-scrollbar-track,
.terminal-content::-webkit-scrollbar-track {
  background: var(--primary-blue-dark);
  border-radius: 4px;
}

.terminal::-webkit-scrollbar-thumb,
.terminal-content::-webkit-scrollbar-thumb {
  background: var(--primary-blue);
  border-radius: 4px;
}

.terminal::-webkit-scrollbar-thumb:hover,
.terminal-content::-webkit-scrollbar-thumb:hover {
  background: var(--primary-blue-light);
}

/* ============================================
   MODERN ASSESSMENT STYLING
   ============================================ */


/* Assessment Intro Grid */
.assessment-intro {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.intro-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: var(--space-8);
  margin-bottom: var(--space-12);
}

.intro-card {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--neutral-gray);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
  text-align: left;
}

.intro-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: var(--space-4);
}

.intro-card h3 {
  color: var(--primary-blue);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.intro-card p {
  color: var(--neutral-medium-gray);
  line-height: 1.6;
}

/* Requirements List */
.requirements-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.requirement-item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.req-number {
  background: var(--primary-blue);
  color: white;
  border-radius: 50%;
  width: 50px;
  height: 50px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.req-text {
  color: var(--neutral-dark-gray);
  font-weight: 500;
}

/* Topics Grid */
.topics-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-4);
}

.topic-tag {
  background: linear-gradient(135deg, var(--neutral-off-white) 0%, #f0f0f0 100%);
  color: var(--primary-blue);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-lg);
  font-weight: 500;
  font-size: 0.9rem;
  border: 1px solid var(--neutral-gray);
}

/* Start Assessment Section */
.start-assessment {
  text-align: center;
  background: linear-gradient(135deg, var(--neutral-off-white) 0%, white 100%);
  border-radius: var(--radius-xl);
  padding: var(--space-12);
  border: 2px solid var(--primary-blue);
  box-shadow: 0 8px 30px rgba(0, 113, 206, 0.1);
}

.assessment-cta h2 {
  color: var(--primary-blue);
  font-size: 2rem;
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.assessment-cta p {
  color: var(--neutral-medium-gray);
  font-size: 1.1rem;
  margin-bottom: var(--space-8);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.btn-assessment-start {
  background: linear-gradient(135deg, var(--primary-blue) 0%, #005a9f 100%);
  color: white;
  border: none;
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-lg);
  font-size: 1.2rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  box-shadow: 0 4px 15px rgba(0, 113, 206, 0.3);
}

.btn-assessment-start:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 113, 206, 0.4);
}

.btn-icon {
  font-size: 1.5rem;
  transition: transform 0.3s ease;
}

.btn-assessment-start:hover .btn-icon {
  transform: translateX(4px);
}

/* Modern Quiz Container */
.modern-quiz {
  max-width: 900px;
  margin: 0 auto;
  background: white;
  border-radius: var(--radius-xl);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
  overflow: hidden;
}

.quiz-header-modern {
  background: linear-gradient(135deg, var(--primary-blue) 0%, #005a9f 100%);
  padding: var(--space-6);
  color: white;
}

.quiz-progress-modern {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.progress-info {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-weight: 600;
}

.question-counter {
  font-size: 1.1rem;
}

.progress-percentage {
  font-size: 1.2rem;
  background: rgba(255, 255, 255, 0.2);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-lg);
}

.progress-track {
  background: rgba(255, 255, 255, 0.2);
  border-radius: var(--radius-lg);
  height: 8px;
  overflow: hidden;
}

.progress-fill-modern {
  background: var(--accent-yellow);
  height: 100%;
  border-radius: var(--radius-lg);
  transition: width 0.3s ease;
  box-shadow: 0 0 10px rgba(252, 199, 46, 0.5);
}

/* Modern Quiz Content */
.quiz-content-modern {
  padding: var(--space-8);
}

.question-card {
  background: var(--neutral-off-white);
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  margin-bottom: var(--space-8);
  border: 1px solid var(--neutral-gray);
}

.question-card .question h3 {
  color: var(--color-text);
  font-size: var(--text-xl);
  margin-bottom: var(--space-6);
}

.question-card .options {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.question-card .option {
  display: flex;
  align-items: center;
  padding: var(--space-4);
  background: var(--neutral-white);
  border: 2px solid var(--neutral-gray);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
}

.question-card .option:hover {
  border-color: var(--primary-blue);
  background: var(--neutral-off-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.question-card .option input[type="radio"] {
  margin: 0;
  margin-right: var(--space-3);
  width: 18px;
  height: 18px;
  accent-color: var(--primary-blue);
  cursor: pointer;
}

.question-card .option .option-text {
  color: var(--neutral-dark-gray);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  cursor: pointer;
  flex: 1;
}

.question-card .option.selected {
  border-color: var(--primary-blue);
  background: linear-gradient(135deg, var(--neutral-off-white), rgba(0, 113, 206, 0.05));
}

.question-card .option.selected .option-text {
  color: var(--primary-blue-dark);
  font-weight: var(--font-medium);
}

/* Modern Quiz Navigation */
.quiz-navigation-modern {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  padding-top: var(--space-6);
  border-top: 1px solid var(--neutral-gray);
}

.btn-nav-secondary, .btn-nav-primary, .btn-submit-quiz {
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-lg);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  border: none;
}

.btn-nav-secondary {
  background: var(--neutral-gray);
  color: var(--neutral-dark-gray);
}

.btn-nav-secondary:hover:not(:disabled) {
  background: var(--neutral-medium-gray);
  transform: translateY(-1px);
}

.btn-nav-secondary:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn-nav-primary {
  background: linear-gradient(135deg, var(--primary-blue) 0%, #005a9f 100%);
  color: white;
  box-shadow: 0 2px 10px rgba(0, 113, 206, 0.3);
}

.btn-nav-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(0, 113, 206, 0.4);
}

.btn-submit-quiz {
  background: linear-gradient(135deg, #28a745 0%, #20924c 100%);
  color: white;
  box-shadow: 0 2px 10px rgba(40, 167, 69, 0.3);
}

.btn-submit-quiz:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(40, 167, 69, 0.4);
}

/* Modern Certificate Section */
.certificate-section-modern {
  max-width: 800px;
  margin: var(--space-12) auto 0;
  text-align: center;
}

.certificate-container {
  background: linear-gradient(135deg, var(--neutral-off-white) 0%, white 100%);
  border-radius: var(--radius-xl);
  padding: var(--space-12);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
  border: 2px solid var(--primary-blue);
}

.success-animation {
  margin-bottom: var(--space-8);
}

.success-icon {
  font-size: 5rem;
  margin-bottom: var(--space-4);
  animation: bounce 2s infinite;
}

@keyframes bounce {
  0%, 20%, 50%, 80%, 100% {
    transform: translateY(0);
  }
  40% {
    transform: translateY(-10px);
  }
  60% {
    transform: translateY(-5px);
  }
}

.success-animation h2 {
  color: var(--primary-blue);
  font-size: 2.5rem;
  font-weight: 700;
  margin-bottom: var(--space-3);
}

.success-message {
  color: var(--neutral-medium-gray);
  font-size: 1.2rem;
  margin-bottom: var(--space-8);
  max-width: 500px;
  margin-left: auto;
  margin-right: auto;
}

.certificate-form-modern {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--space-8);
  border: 1px solid var(--neutral-gray);
}

.form-header {
  margin-bottom: var(--space-6);
}

.form-header h3 {
  color: var(--primary-blue);
  font-size: 1.8rem;
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.form-header p {
  color: var(--neutral-medium-gray);
  font-size: 1rem;
}

.name-input-container {
  margin-bottom: var(--space-8);
  text-align: left;
}

.name-input-container label {
  display: block;
  color: var(--neutral-dark-gray);
  font-weight: 600;
  margin-bottom: var(--space-2);
}

.modern-input {
  width: 100%;
  padding: var(--space-4);
  border: 2px solid var(--neutral-gray);
  border-radius: var(--radius-lg);
  font-size: 1.1rem;
  transition: border-color 0.3s ease;
  pointer-events: auto !important;
  cursor: text;
  user-select: text;
  -webkit-user-select: text;
  -moz-user-select: text;
  -ms-user-select: text;
}

.modern-input:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(0, 113, 206, 0.1);
}

.btn-certificate {
  background: linear-gradient(135deg, var(--primary-blue) 0%, #005a9f 100%);
  color: white;
  border: none;
  padding: var(--space-4) var(--space-8);
  border-radius: var(--radius-lg);
  font-size: 1.2rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  box-shadow: 0 4px 15px rgba(0, 113, 206, 0.3);
}

.btn-certificate:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 113, 206, 0.4);
}

.cert-icon {
  font-size: 1.5rem;
}

.name-input-container {
  margin: var(--space-4) 0;
  text-align: left;
  pointer-events: auto !important;
}

.name-input-container label {
  display: block;
  margin-bottom: var(--space-2);
  font-weight: 600;
  color: var(--color-text);
  pointer-events: auto !important;
}

/* ============================================
   INTERACTIVE BEST PRACTICES STYLING
   ============================================ */

/* Workshop Layout */
.practice-workshop {
  margin-bottom: var(--space-12);
}

.workshop-card {
  background: white;
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--neutral-gray);
  margin-bottom: var(--space-8);
}

.workshop-card h3 {
  color: var(--primary-blue);
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--space-4);
  text-align: center;
}

/* Commit Message Builder */
.commit-builder {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  margin-top: var(--space-6);
}

.builder-form .form-group {
  margin-bottom: var(--space-4);
}

.builder-form label {
  display: block;
  font-weight: 600;
  color: var(--neutral-dark-gray);
  margin-bottom: var(--space-2);
}

.builder-form select,
.builder-form input,
.builder-form textarea {
  width: 100%;
  padding: var(--space-3);
  border: 2px solid var(--neutral-gray);
  border-radius: var(--radius-lg);
  font-size: 1rem;
  transition: border-color 0.3s ease;
}

.builder-form select:focus,
.builder-form input:focus,
.builder-form textarea:focus {
  outline: none;
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(0, 113, 206, 0.1);
}

.builder-form textarea {
  resize: vertical;
  min-height: 100px;
}

.char-count {
  text-align: right;
  font-size: 0.875rem;
  color: var(--neutral-medium-gray);
  margin-top: var(--space-1);
}

.commit-preview {
  background: var(--neutral-off-white);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  border: 1px solid var(--neutral-gray);
}

.commit-preview h4 {
  color: var(--primary-blue);
  margin-bottom: var(--space-4);
}

.preview-box {
  background: #1e1e1e;
  color: #f0f0f0;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  font-family: 'Courier New', monospace;
  white-space: pre-wrap;
  min-height: 150px;
  margin-bottom: var(--space-4);
  border: 1px solid #333;
}

.preview-box .placeholder {
  color: #888;
  font-style: italic;
}

.preview-actions {
  display: flex;
  gap: var(--space-3);
}

.commit-feedback {
  margin-top: var(--space-6);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
}

.commit-feedback.success {
  background: #d4edda;
  border: 1px solid #c3e6cb;
  color: #155724;
}

.commit-feedback.warning {
  background: #fff3cd;
  border: 1px solid #ffeaa7;
  color: #856404;
}

.commit-feedback.error {
  background: #f8d7da;
  border: 1px solid #f5c6cb;
  color: #721c24;
}

/* Security Scanner */
.security-scanner textarea {
  width: 100%;
  min-height: 200px;
  padding: var(--space-4);
  border: 2px solid var(--neutral-gray);
  border-radius: var(--radius-lg);
  font-family: 'Courier New', monospace;
  font-size: 0.95rem;
  resize: vertical;
}

.scanner-controls {
  margin: var(--space-4) 0;
  display: flex;
  gap: var(--space-3);
}

.scan-results {
  margin-top: var(--space-6);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.security-issue {
  background: #f8d7da;
  border-left: 4px solid #dc3545;
  padding: var(--space-4);
  margin-bottom: var(--space-3);
}

.security-issue.high {
  border-left-color: #dc3545;
  background: #f8d7da;
}

.security-issue.medium {
  border-left-color: #ffc107;
  background: #fff3cd;
}

.security-issue.low {
  border-left-color: #17a2b8;
  background: #d1ecf1;
}

.issue-title {
  font-weight: 600;
  color: var(--neutral-dark-gray);
  margin-bottom: var(--space-2);
}

.issue-description {
  margin-bottom: var(--space-2);
}

.issue-suggestion {
  background: rgba(255, 255, 255, 0.7);
  padding: var(--space-2);
  border-radius: var(--radius-lg);
  font-family: 'Courier New', monospace;
  font-size: 0.9rem;
}

/* .gitignore Builder */
.gitignore-builder {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  margin-top: var(--space-6);
}

.project-types h4,
.custom-additions h4 {
  color: var(--primary-blue);
  font-weight: 600;
  margin-bottom: var(--space-4);
}

.type-checkboxes {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-2);
}

.type-checkboxes label {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-2);
  border-radius: var(--radius-lg);
  transition: background-color 0.2s ease;
  cursor: pointer;
}

.type-checkboxes label:hover {
  background: var(--neutral-off-white);
}

.custom-additions {
  grid-column: 1 / -1;
}

.custom-additions div {
  display: flex;
  gap: var(--space-3);
  align-items: center;
}

.gitignore-preview {
  grid-column: 1 / -1;
  margin-top: var(--space-6);
}

.gitignore-preview pre {
  background: #1e1e1e;
  color: #f0f0f0;
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  max-height: 300px;
  overflow-y: auto;
  margin-bottom: var(--space-4);
}

/* Branch Practice */
.branch-practice {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--space-8);
  margin-top: var(--space-6);
}

.scenario {
  background: var(--neutral-off-white);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--neutral-gray);
  margin-bottom: var(--space-4);
}

.scenario h4 {
  color: var(--primary-blue);
  margin-bottom: var(--space-2);
}

.branch-input {
  display: flex;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.branch-input input {
  flex: 1;
  padding: var(--space-3);
  border: 2px solid var(--neutral-gray);
  border-radius: var(--radius-lg);
  font-family: 'Courier New', monospace;
}

.scenario-controls {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.branch-feedback {
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-4);
}

.naming-guide {
  background: var(--neutral-off-white);
  padding: var(--space-6);
  border-radius: var(--radius-lg);
  border: 1px solid var(--neutral-gray);
}

.naming-guide h4 {
  color: var(--primary-blue);
  margin-bottom: var(--space-4);
}

.naming-guide code {
  background: white;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  color: var(--primary-blue);
  font-weight: 600;
}

/* Smart Checklist */
.smart-checklist {
  margin-top: var(--space-6);
}

.checklist-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  margin-bottom: var(--space-3);
  background: var(--neutral-off-white);
  border: 1px solid var(--neutral-gray);
  transition: all 0.3s ease;
}

.checklist-item:hover {
  background: white;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.checklist-item label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex: 1;
  cursor: pointer;
  font-weight: 500;
}

.checklist-item input[type="checkbox"] {
  display: none;
}

.checkmark {
  width: 24px;
  height: 24px;
  border: 2px solid var(--neutral-gray);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.3s ease;
  background: white;
}

.checklist-item input[type="checkbox"]:checked + .checkmark {
  background: var(--primary-blue);
  border-color: var(--primary-blue);
  color: white;
}

.checklist-item input[type="checkbox"]:checked + .checkmark::after {
  content: '✓';
  font-weight: bold;
}

.help-btn {
  background: var(--neutral-gray);
  border: none;
  border-radius: 50%;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--neutral-dark-gray);
  font-weight: bold;
  transition: background-color 0.2s ease;
}

.help-btn:hover {
  background: var(--primary-blue);
  color: white;
}

.checklist-progress {
  margin: var(--space-6) 0;
  text-align: center;
}

.progress-bar {
  background: var(--neutral-gray);
  height: 8px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  margin-bottom: var(--space-2);
}

.progress-fill {
  background: linear-gradient(90deg, var(--primary-blue) 0%, #4fa8d8 100%);
  height: 100%;
  border-radius: var(--radius-lg);
  transition: width 0.5s ease;
  box-shadow: 0 0 8px rgba(0, 113, 206, 0.3);
}

.commit-ready {
  text-align: center;
  padding: var(--space-6);
  background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
  border-radius: var(--radius-lg);
  border: 2px solid #28a745;
}

.ready-message {
  font-size: 1.2rem;
  font-weight: 600;
  color: #155724;
  margin-bottom: var(--space-4);
}

.btn-success {
  background: linear-gradient(135deg, #28a745 0%, #20924c 100%);
  color: white;
  border: none;
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-lg);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.3s ease;
  box-shadow: 0 2px 10px rgba(40, 167, 69, 0.3);
}

.btn-success:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 15px rgba(40, 167, 69, 0.4);
}

.checklist-help {
  margin-top: var(--space-6);
  padding: var(--space-4);
  background: var(--neutral-off-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--neutral-gray);
}

.quiz-intro h3,
.quiz-intro h4,
.quiz-intro p {
  text-align: center;
  margin-left: auto;
  margin-right: auto;
}

.quiz-intro ul,
.quiz-intro ol {
  text-align: left;
  max-width: 80%;
  margin-left: auto;
  margin-right: auto;
}

.quiz-requirements ul {
  text-align: left;
  max-width: 400px;
  margin: var(--space-4) auto;
}

.quiz-requirements li {
  margin-bottom: var(--space-2);
  color: var(--neutral-dark-gray);
}

.quiz-container {
  max-width: 800px;
  margin: var(--space-6) auto;
  background: var(--neutral-white);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-lg);
  border: 2px solid var(--neutral-gray);
}

.quiz-header {
  margin-bottom: var(--space-6);
  padding-bottom: var(--space-4);
  border-bottom: 2px solid var(--primary-blue);
}

.quiz-progress {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-4);
}

.quiz-progress span {
  font-size: var(--text-lg);
  font-weight: var(--font-medium);
  color: var(--bentonville-blue);
  min-width: 140px;
}

.progress-bar-quiz {
  flex: 1;
  height: 8px;
  background: var(--neutral-gray);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.progress-fill-quiz {
  height: 100%;
  background: linear-gradient(90deg, var(--primary-blue), var(--accent-yellow));
  width: 0%;
  transition: width var(--transition-base);
}

.quiz-options {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-6);
}

.quiz-option {
  display: flex;
  align-items: center;
  padding: var(--space-4);
  background: var(--neutral-white);
  border: 2px solid var(--neutral-gray);
  border-radius: var(--radius-lg);
  cursor: pointer;
  transition: all var(--transition-base);
  position: relative;
}

.quiz-option:hover {
  border-color: var(--primary-blue);
  background: var(--neutral-off-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.quiz-option input[type="radio"] {
  margin: 0;
  margin-right: var(--space-3);
  width: 18px;
  height: 18px;
  accent-color: var(--primary-blue);
  cursor: pointer;
}

.quiz-option .option-text {
  color: var(--neutral-dark-gray);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  cursor: pointer;
  flex: 1;
}

.quiz-option:has(input:checked) {
  border-color: var(--primary-blue);
  background: linear-gradient(135deg, var(--neutral-off-white), rgba(0, 113, 206, 0.05));
}

.quiz-option:has(input:checked) .option-text {
  color: var(--primary-blue-dark);
  font-weight: var(--font-medium);
}

.quiz-navigation {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-6);
  border-top: 1px solid var(--neutral-gray);
}

.quiz-results {
  max-width: 800px;
  margin: var(--space-6) auto;
  background: var(--neutral-white);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  box-shadow: var(--shadow-xl);
  border: 2px solid var(--primary-blue);
  text-align: center;
}

.score-summary {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin-top: var(--space-4);
  text-align: center;
}

/* ============================================
   CERTIFICATE STYLING - BRANDED
   ============================================ */
.certificate-section {
  margin-top: var(--space-8);
}

.certificate-form {
  text-align: center;
  background: linear-gradient(135deg, rgba(255, 194, 32, 0.1), rgba(0, 113, 206, 0.1));
  border: 2px solid var(--accent-yellow);
  border-radius: var(--radius-xl);
  padding: var(--space-8);
  margin: var(--space-6) 0;
}

.certificate-form h3 {
  color: var(--primary-blue);
  margin-bottom: var(--space-4);
}

.certificate-form p {
  margin: 0 auto var(--space-4) auto;
  max-width: none;
  color: var(--neutral-dark-gray);
}

/* Certificate Display Styles */
.certificate-display {
  max-width: 800px;
  margin: 2rem auto;
  background: var(--neutral-white);
  padding: 3rem;
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-xl);
  border: 4px solid var(--primary-blue);
  position: relative;
  text-align: center;
}

.certificate-display::before {
  content: '';
  position: absolute;
  top: -2px;
  left: -2px;
  right: -2px;
  bottom: -2px;
  background: linear-gradient(45deg, var(--primary-blue), var(--accent-yellow), var(--primary-blue));
  border-radius: var(--radius-2xl);
  z-index: -1;
}

.certificate-header {
  border-bottom: 3px solid var(--primary-blue);
  padding-bottom: 2rem;
  margin-bottom: 2rem;
}

.certificate-logo {
  font-size: 3rem;
  margin-bottom: 1rem;
  color: var(--primary-blue);
}

.certificate-school {
  font-size: 2rem;
  font-weight: var(--font-bold);
  color: var(--primary-blue);
  margin-bottom: 0.5rem;
}

.certificate-subtitle {
  font-size: var(--text-lg);
  color: var(--neutral-medium-gray);
  font-style: italic;
}

.certificate-title {
  font-size: 2.5rem;
  font-weight: var(--font-bold);
  color: var(--bentonville-blue);
  margin: 2rem 0;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.certificate-recipient {
  font-size: var(--text-xl);
  margin: 1.5rem 0;
  color: var(--neutral-medium-gray);
}

.certificate-name {
  font-size: 2.5rem;
  font-weight: var(--font-bold);
  color: var(--primary-blue);
  margin: 1.5rem 0;
  text-decoration: underline;
  text-decoration-color: var(--accent-yellow);
  text-underline-offset: 0.2em;
  text-decoration-thickness: 3px;
}

.certificate-achievement {
  font-size: var(--text-xl);
  margin: 2rem 0;
  line-height: var(--leading-relaxed);
  color: var(--neutral-dark-gray);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.certificate-details {
  display: flex;
  justify-content: space-between;
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 2px solid var(--neutral-gray);
  gap: var(--space-8);
}

.certificate-date,
.certificate-signature {
  text-align: center;
  flex: 1;
}

.detail-label {
  font-size: var(--text-sm);
  color: var(--neutral-medium-gray);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--space-2);
  font-weight: var(--font-semibold);
}

.detail-value {
  font-size: var(--text-base);
  color: var(--bentonville-blue);
  font-weight: var(--font-medium);
  border-bottom: 2px solid var(--primary-blue);
  padding-bottom: var(--space-1);
  display: inline-block;
  min-width: 120px;
}

.perfect-score-badge {
  background: linear-gradient(45deg, var(--accent-yellow), var(--accent-yellow-light));
  color: var(--primary-blue-dark);
  font-weight: var(--font-bold);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  margin: var(--space-4) auto;
  display: inline-block;
  box-shadow: var(--shadow-md);
  border: 2px solid var(--primary-blue);
}

/* ============================================
   WORKFLOW STEPS
   ============================================ */
.workflow-steps {
  margin: var(--space-8) 0;
}

.workflow-steps .step {
  margin-bottom: var(--space-8);
  padding-left: var(--space-12);
  position: relative;
}

.workflow-steps .step-number {
  position: absolute;
  left: 0;
  top: 0;
  width: 36px;
  height: 36px;
  background: var(--accent-yellow);
  color: var(--bentonville-blue);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: var(--font-bold);
  font-size: var(--text-base);
  box-shadow: var(--shadow-md);
  border: 2px solid var(--primary-blue);
}

.workflow-steps .step-content {
  background: var(--neutral-white);
  border: 1px solid var(--neutral-gray);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-sm);
}

.workflow-steps .step-content h4 {
  margin-top: 0;
  margin-bottom: var(--space-4);
  color: var(--primary-blue);
  font-size: var(--text-xl);
}

.workflow-steps .step-note {
  background: rgba(0, 113, 206, 0.05);
  border-left: 3px solid var(--primary-blue);
  padding: var(--space-3) var(--space-4);
  margin-top: var(--space-4);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  color: var(--neutral-dark-gray);
}

/* ============================================
   CONCEPT EXPLANATION - REPLACES INTERACTIVE DEMO
   ============================================ */
.concept-explanation {
  background: var(--neutral-white);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  margin: var(--space-8) 0;
  border: 2px solid var(--neutral-gray);
  box-shadow: var(--shadow-md);
}

.concept-explanation h3 {
  color: var(--primary-blue);
  margin-bottom: var(--space-4);
}

.evolution-showcase {
  margin: var(--space-6) 0;
}

.evolution-step {
  display: flex;
  align-items: flex-start;
  gap: var(--space-4);
  margin: var(--space-6) 0;
  padding: var(--space-6);
  background: var(--neutral-off-white);
  border-radius: var(--radius-xl);
  border-left: 4px solid var(--primary-blue);
}

.step-badge {
  background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-light));
  color: var(--neutral-white);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  font-weight: var(--font-semibold);
  font-size: var(--text-sm);
  min-width: 60px;
  text-align: center;
  box-shadow: var(--shadow-sm);
}

.step-content {
  flex: 1;
}

.step-content h4 {
  color: var(--primary-blue);
  margin: 0 0 var(--space-2) 0;
  font-size: var(--text-lg);
}

.step-content p {
  color: var(--neutral-dark-gray);
  margin: 0 0 var(--space-4) 0;
  font-size: var(--text-base);
}

.code-example {
  background: var(--bentonville-blue);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin-top: var(--space-3);
}

.code-example pre {
  margin: 0;
  color: var(--neutral-white);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  overflow-x: auto;
}

.evolution-arrow {
  text-align: center;
  font-size: var(--text-2xl);
  color: var(--primary-blue);
  font-weight: var(--font-bold);
  margin: var(--space-4) 0;
  padding: var(--space-2);
}

.concept-benefits {
  background: linear-gradient(135deg, rgba(0, 113, 206, 0.05), var(--neutral-white));
  border: 1px solid var(--primary-blue);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin-top: var(--space-8);
}

.concept-benefits h4 {
  color: var(--primary-blue);
  margin-bottom: var(--space-4);
}

.concept-benefits ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.concept-benefits li {
  padding: var(--space-2) 0;
  color: var(--neutral-dark-gray);
  position: relative;
  padding-left: var(--space-6);
}

.concept-benefits li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--accent-yellow);
  font-weight: var(--font-bold);
  font-size: var(--text-lg);
}

.concept-benefits li strong {
  color: var(--bentonville-blue);
}

/* ============================================
   COLLABORATION PAGE - WORKFLOW CARDS
   ============================================ */
.git-workflow-visual {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin: var(--space-6) 0;
  background: var(--neutral-off-white);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  border: 1px solid var(--neutral-gray);
}

.workflow-step {
  background: var(--neutral-white);
  border: 2px solid var(--primary-blue);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  text-align: center;
  min-width: 140px;
  transition: all var(--transition-base);
  box-shadow: var(--shadow-sm);
}

.workflow-step:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-blue-dark);
}

.workflow-step h4 {
  color: var(--primary-blue);
  margin: 0;
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
}

.workflow-step p {
  color: var(--neutral-dark-gray);
  margin: 0;
  font-size: var(--text-sm);
}

.workflow-step svg {
  color: var(--primary-blue);
}

.workflow-arrow {
  color: var(--primary-blue);
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
}

/* Generic Card Styling for Consistency */
.card {
  background: var(--neutral-white);
  border: 2px solid var(--neutral-gray);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  margin: var(--space-8) 0;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, transparent, rgba(0, 113, 206, 0.02), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

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

.card:hover::before {
  opacity: 1;
}

.card h3 {
  color: var(--primary-blue);
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  margin-bottom: var(--space-4);
  position: relative;
  z-index: 1;
}

.card p {
  color: var(--neutral-dark-gray);
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
  position: relative;
  z-index: 1;
}

.card:hover h3 {
  color: var(--primary-blue-dark);
}

.card:hover p {
  color: var(--bentonville-blue);
}

/* ============================================
   BASIC GIT OPERATIONS - CONCEPT CARDS
   ============================================ */
.concept-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
  margin: var(--space-8) 0;
}

.concept-card {
  background: var(--neutral-white);
  border: 2px solid var(--neutral-gray);
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  text-align: center;
  transition: all var(--transition-base);
  cursor: pointer;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.concept-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, transparent, rgba(0, 113, 206, 0.05), transparent);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.concept-card:hover {
  border-color: var(--primary-blue);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.concept-card:hover::before {
  opacity: 1;
}

.concept-card h3 {
  color: var(--primary-blue);
  margin-bottom: var(--space-4);
  font-size: var(--text-2xl);
  font-weight: var(--font-semibold);
  position: relative;
  z-index: 1;
}

.concept-card p {
  color: var(--neutral-dark-gray);
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  position: relative;
  z-index: 1;
  margin: 0;
}

.concept-card:hover h3 {
  color: var(--primary-blue-dark);
  transform: scale(1.05);
}

.concept-card:hover p {
  color: var(--bentonville-blue);
}

/* Concept Details Expansion */
.concept-details {
  background: var(--neutral-off-white);
  border: 2px solid var(--primary-blue);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  margin: var(--space-6) 0;
  display: none;
  animation: slideDown var(--transition-base) ease-out;
}

.concept-details.active {
  display: block;
}

.concept-details h4 {
  color: var(--primary-blue);
  margin-bottom: var(--space-4);
  font-size: var(--text-xl);
}

.concept-details pre {
  background: var(--bentonville-blue);
  color: var(--neutral-white);
  padding: var(--space-4);
  border-radius: var(--radius-lg);
  margin: var(--space-4) 0;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  overflow-x: auto;
}

.concept-details code {
  background: var(--accent-yellow);
  color: var(--bentonville-blue);
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
}

.command-examples {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--space-4);
  margin: var(--space-4) 0;
}

.command-example {
  background: var(--neutral-off-white);
  border: 1px solid var(--neutral-gray);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  text-align: center;
}

.command-example code {
  display: block;
  background: var(--bentonville-blue);
  color: var(--neutral-white);
  padding: var(--space-3);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
}

.command-example p {
  color: var(--neutral-dark-gray);
  font-size: var(--text-sm);
  margin: 0;
}

/* Additional concept detail components */
.merge-types, .resolution-steps, .pull-scenarios, .pull-problems {
  display: grid;
  gap: var(--space-4);
  margin: var(--space-6) 0;
}

.merge-type, .step-item, .scenario, .problem {
  background: var(--neutral-white);
  border: 1px solid var(--neutral-gray);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  border-left: 4px solid var(--primary-blue);
}

.merge-type h5, .step-item h5, .scenario h5, .problem h5 {
  color: var(--primary-blue);
  margin-top: 0;
  margin-bottom: var(--space-2);
  font-size: var(--text-base);
}

.conflict-example {
  background: var(--neutral-off-white);
  border: 2px solid var(--error-red);
  border-radius: var(--radius-lg);
  padding: var(--space-4);
  margin: var(--space-4) 0;
}

.conflict-example h5 {
  color: var(--error-red);
  margin-top: 0;
}

@keyframes slideDown {
  from {
    opacity: 0;
    transform: translateY(-10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Basic Workflow Enhancement */
.basic-workflow {
  background: linear-gradient(135deg, rgba(0, 113, 206, 0.03), var(--neutral-white));
  border-radius: var(--radius-2xl);
  padding: var(--space-8);
  margin: var(--space-8) 0;
  border: 1px solid var(--primary-blue);
  position: relative;
}

.basic-workflow h3 {
  color: var(--primary-blue);
  text-align: center;
  margin-bottom: var(--space-6);
  font-size: var(--text-3xl);
}

.basic-workflow > p {
  text-align: center;
  color: var(--neutral-dark-gray);
  font-size: var(--text-lg);
  margin-bottom: var(--space-8);
}

/* ============================================
   CHECKLIST STYLING - BRANDED
   ============================================ */
.checklist {
  margin-top: var(--space-10);
  margin-bottom: var(--space-12);
  background: linear-gradient(135deg, rgba(0, 113, 206, 0.08), rgba(255, 194, 32, 0.05));
  border: 2px solid var(--primary-blue);
  border-radius: var(--radius-xl);
  padding: var(--space-6);
  box-shadow: var(--shadow-md);
}

.checklist h3 {
  margin-bottom: var(--space-4);
  color: var(--primary-blue);
  font-weight: var(--font-semibold);
  font-size: var(--text-xl);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.checklist h3::before {
  content: '✓';
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  background: var(--accent-yellow);
  color: var(--primary-blue-dark);
  border-radius: var(--radius-full);
  font-weight: var(--font-bold);
  font-size: var(--text-sm);
}

.checklist-items {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.checklist-items label {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  color: var(--neutral-dark-gray);
  cursor: pointer;
  font-size: var(--text-base);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
  background: var(--neutral-white);
  border: 1px solid var(--neutral-gray);
}

.checklist-items label:hover {
  background: var(--neutral-off-white);
  border-color: var(--primary-blue);
  transform: translateX(2px);
}

.checklist-items input[type="checkbox"] {
  width: 20px;
  height: 20px;
  accent-color: var(--primary-blue);
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.checklist-items label:has(input:checked) {
  background: linear-gradient(135deg, rgba(0, 113, 206, 0.1), rgba(255, 194, 32, 0.05));
  border-color: var(--accent-yellow);
  color: var(--primary-blue-dark);
  font-weight: var(--font-medium);
}

.checklist-items label:has(input:checked)::after {
  content: '✨';
  margin-left: auto;
  font-size: var(--text-sm);
}

/* ============================================
   QUICK CHECK COMPONENTS
   ============================================ */
.quick-check-section {
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  border: 2px solid var(--color-primary);
  border-radius: var(--border-radius-lg);
  padding: var(--space-8);
  margin: var(--space-8) 0;
  text-align: center;
  box-shadow: 0 4px 12px rgba(139, 92, 246, 0.1);
}

.quick-check-header {
  margin-bottom: var(--space-6);
}

.quick-check-header h3 {
  color: var(--color-primary);
  font-size: var(--text-2xl);
  font-weight: var(--font-bold);
  margin: 0 0 var(--space-3) 0;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
}

.quick-check-header .quick-check-icon {
  font-size: var(--text-2xl);
}

.quick-check-header p {
  color: var(--color-text-secondary);
  font-size: var(--text-lg);
  margin: 0;
  font-weight: var(--font-medium);
  text-align: center;
}

.quick-check-content {
  text-align: center;
}

.quick-check-content .question {
  font-size: var(--text-lg);
  font-weight: var(--font-semibold);
  color: var(--color-text);
  margin-bottom: var(--space-6);
  text-align: center;
}

.quick-check-content .quiz-options {
  text-align: left;
  max-width: 600px;
  margin: 0 auto;
}

.quick-check-content .btn {
  margin: var(--space-2) var(--space-1);
  min-width: 120px;
}

/* ============================================
   NAVIGATION & SECTION SPACING
   ============================================ */
/* Ensure all sections have proper spacing from navigation buttons */
.section-navigation,
.nav-buttons,
.page-navigation,
.quiz-navigation,
.section-controls {
  margin-top: var(--space-12);
  padding-top: var(--space-6);
  border-top: 2px solid var(--neutral-gray);
}

/* Last elements in sections need extra space */
.section > *:last-child,
.content-area > *:last-child {
  margin-bottom: var(--space-12);
}

/* Special spacing for certain combinations */
.terminal + .nav-buttons,
.checklist + .nav-buttons,
.quiz-results + .nav-buttons,
.certificate-display + .nav-buttons,
.workflow-steps + .nav-buttons {
  margin-top: var(--space-16);
}

/* Ensure consistent spacing between major sections */
.section {
  padding-bottom: var(--space-8);
}

.section:not(:last-child) {
  margin-bottom: var(--space-12);
}

/* Content wrapper spacing */
.main-content .section > div:last-child,
.main-content .section > section:last-child {
  margin-bottom: var(--space-12);
}

/* ============================================
   RESPONSIVE DESIGN - CERTIFICATES & COMPONENTS
   ============================================ */
@media (max-width: 768px) {
  .progress-container {
    left: 0;
  }
  
  /* Adjust spacing for mobile */
  .setup-content,
  .comparison-cards,
  .workflow-section,
  .content-section,
  .interactive-demo,
  .checklist,
  .quiz-container,
  .quiz-intro,
  .terminal,
  .workflow-steps {
    margin-bottom: var(--space-8);
  }
  
  
  .section-navigation,
  .nav-buttons,
  .page-navigation,
  .quiz-navigation,
  .section-controls {
    margin-top: var(--space-8);
    padding-top: var(--space-4);
  }
  
  .terminal + .nav-buttons,
  .checklist + .nav-buttons,
  .quiz-results + .nav-buttons,
  .certificate-display + .nav-buttons,
  .workflow-steps + .nav-buttons {
    margin-top: var(--space-10);
  }
  
  .certificate-display {
    padding: 2rem 1.5rem;
    margin: 1rem;
  }
  
  .certificate-title {
    font-size: 1.8rem;
  }
  
  .certificate-name {
    font-size: 2rem;
  }
  
  .certificate-details {
    flex-direction: column;
    gap: 2rem;
  }
  
  .git-workflow-visual {
    flex-direction: column;
    gap: var(--space-4);
  }
  
  .workflow-arrow {
    transform: rotate(90deg);
  }
  
  .quiz-option {
    padding: var(--space-3);
  }
  
  .quiz-option input[type="radio"] {
    width: 16px;
    height: 16px;
  }
  
  .terminal {
    padding: var(--space-4);
    margin: var(--space-4) 0;
  }
  
  .workflow-steps .step {
    padding-left: var(--space-8);
  }
  
  .workflow-steps .step-number {
    width: 28px;
    height: 28px;
    font-size: var(--text-sm);
  }
}

/* ============================================
   UTILITY CLASSES
   ============================================ */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }

.mb-1 { margin-bottom: var(--space-1); }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.pt-1 { padding-top: var(--space-1); }
.pt-2 { padding-top: var(--space-2); }
.pt-3 { padding-top: var(--space-3); }
.pt-4 { padding-top: var(--space-4); }
.pt-6 { padding-top: var(--space-6); }
.pt-8 { padding-top: var(--space-8); }

.pb-1 { padding-bottom: var(--space-1); }
.pb-2 { padding-bottom: var(--space-2); }
.pb-3 { padding-bottom: var(--space-3); }
.pb-4 { padding-bottom: var(--space-4); }
.pb-6 { padding-bottom: var(--space-6); }
.pb-8 { padding-bottom: var(--space-8); }

.hidden { display: none; }
.block { display: block; }
.inline-block { display: inline-block; }
.flex { display: flex; }
.inline-flex { display: inline-flex; }

.items-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }

/* Enhanced Certificate Display Styles */
.certificate-display {
    width: 100%;
    max-width: 800px;
    height: auto;
    background: linear-gradient(135deg, #ffffff 0%, #f8fafc 100%);
    border: 8px solid transparent;
    background-clip: padding-box;
    border-radius: 20px;
    padding: 30px 25px;
    position: relative;
    margin: 2rem auto;
    box-shadow: 0 20px 40px rgba(0,0,0,0.1), inset 0 1px 0 rgba(255,255,255,0.8);
    overflow: hidden;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.certificate-display::before {
    content: '';
    position: absolute;
    top: -8px;
    left: -8px;
    right: -8px;
    bottom: -8px;
    background: linear-gradient(135deg, #24292e 0%, #0366d6 30%, #28a745 60%, #ffd33d 100%);
    border-radius: 20px;
    z-index: -1;
}

.certificate-display::after {
    content: '';
    position: absolute;
    top: 10px;
    left: 10px;
    right: 10px;
    bottom: 10px;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grid" width="10" height="10" patternUnits="userSpaceOnUse"><path d="M 10 0 L 0 0 0 10" fill="none" stroke="%23e2e8f0" stroke-width="0.5" opacity="0.3"/></pattern></defs><rect width="100" height="100" fill="url(%23grid)"/></svg>');
    border-radius: 15px;
    opacity: 0.3;
    z-index: -1;
    pointer-events: none;
}

.certificate-display .perfect-badge {
    position: absolute;
    top: 10px;
    right: 10px;
    background: linear-gradient(135deg, #ffd700 0%, #ffed4e 100%);
    color: #744210;
    padding: 6px 12px;
    border-radius: 20px;
    font-size: 10px;
    font-weight: bold;
    box-shadow: 0 4px 15px rgba(255, 215, 0, 0.4);
    border: 2px solid #fff;
    transform: rotate(-5deg);
    z-index: 10;
}

.certificate-display .perfect-badge::before {
    content: '⭐';
    margin-right: 4px;
}

.certificate-display .perfect-badge::after {
    content: '⭐';
    margin-left: 4px;
}

.certificate-display .corner-ornament {
    position: absolute;
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #0366d6 0%, #28a745 100%);
    opacity: 0.1;
}

.certificate-display .corner-ornament.top-left {
    top: 15px;
    left: 15px;
    border-radius: 0 0 100% 0;
}

.certificate-display .corner-ornament.top-right {
    top: 15px;
    right: 15px;
    border-radius: 0 0 0 100%;
}

.certificate-display .corner-ornament.bottom-left {
    bottom: 15px;
    left: 15px;
    border-radius: 0 100% 0 0;
}

.certificate-display .corner-ornament.bottom-right {
    bottom: 15px;
    right: 15px;
    border-radius: 100% 0 0 0;
}

.certificate-display .header {
    text-align: center;
    margin-bottom: 15px;
    position: relative;
}

.certificate-display .logo-section {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 8px;
}

.certificate-display .github-logo {
    width: 35px;
    height: 35px;
    fill: #24292e;
}

.certificate-display .logo {
    font-size: 32px;
}

.certificate-display .school-name {
    font-size: 20px;
    font-weight: bold;
    margin-bottom: 3px;
    background: linear-gradient(135deg, #24292e 0%, #0366d6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.certificate-display .motto {
    font-style: italic;
    color: #718096;
    font-size: 12px;
    position: relative;
}

.certificate-display .motto::before,
.certificate-display .motto::after {
    content: '✧';
    color: #0366d6;
    margin: 0 8px;
}

.certificate-display .certificate-body {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: 0 20px;
}

.certificate-display .title {
    text-align: center;
    font-size: 32px;
    font-weight: bold;
    margin: 20px 0;
    letter-spacing: 3px;
    color: #24292e;
    text-transform: uppercase;
    position: relative;
}

.certificate-display .title::before {
    content: '';
    position: absolute;
    top: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, #0366d6 50%, transparent 100%);
}

.certificate-display .title::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 60%;
    height: 2px;
    background: linear-gradient(90deg, transparent 0%, #0366d6 50%, transparent 100%);
}

.certificate-display .presented-to {
    text-align: center;
    font-size: 18px;
    color: #4a5568;
    margin: 25px 0 10px 0;
    font-style: italic;
}

.certificate-display .name {
    text-align: center;
    font-size: 28px;
    font-weight: bold;
    background: linear-gradient(135deg, #0366d6 0%, #28a745 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin: 10px 0;
    padding-bottom: 6px;
    position: relative;
    text-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.certificate-display .name::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 80%;
    height: 3px;
    background: linear-gradient(90deg, transparent 0%, #0366d6 20%, #28a745 80%, transparent 100%);
    border-radius: 2px;
}

.certificate-display .achievement {
    text-align: center;
    font-size: 16px;
    line-height: 1.6;
    margin: 20px 0;
    padding: 0 30px;
    color: #2d3748;
}

.certificate-display .score-section {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 15px;
    margin: 25px 0;
    padding: 15px;
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border-radius: 10px;
    margin: 20px 30px;
}

.certificate-display .score-label {
    font-size: 16px;
    color: #4a5568;
    font-weight: 600;
}

.certificate-display .score-value {
    font-size: 24px;
    font-weight: bold;
    color: #2b6cb0;
    background: linear-gradient(135deg, #0366d6 0%, #28a745 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.certificate-display .score {
    color: #2b6cb0;
    font-weight: bold;
    font-size: 16px;
}

.certificate-display .perfect-message {
    margin-top: 10px;
    color: #2b6cb0;
    font-weight: bold;
    font-size: 14px;
}

.certificate-display .details {
    display: flex;
    justify-content: space-between;
    margin-top: 15px;
    padding-top: 15px;
    border-top: 2px solid #e2e8f0;
}

.certificate-display .date, 
.certificate-display .signature {
    text-align: center;
    width: 45%;
}

.certificate-display .label {
    font-size: 10px;
    color: #718096;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 8px;
    font-weight: bold;
}

.certificate-display .signature-line {
    border-bottom: 2px solid #2d3748;
    width: 150px;
    margin: 12px auto 8px;
}

.certificate-display .instructor {
    font-weight: bold;
    font-size: 14px;
}

.certificate-display .date-text {
    font-size: 14px;
    font-weight: 600;
}

/* Loading Spinner */
.loading-spinner {
    width: 40px;
    height: 40px;
    margin: 0 auto;
    border: 4px solid #e2e8f0;
    border-top: 4px solid #0366d6;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Accessibility Improvements */
.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* Focus indicators */
.btn:focus,
.quiz-option input:focus,
.form-input:focus,
button:focus {
    outline: 3px solid #0366d6;
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .btn {
        border: 2px solid currentColor;
    }
    
    .certificate-display {
        border: 3px solid #000;
    }
}

/* Reduced motion support */
@media (prefers-reduced-motion: reduce) {
    .loading-spinner {
        animation: none;
    }
    
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Enhanced Mobile Responsiveness */
@media (max-width: 768px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s ease;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .content {
        margin-left: 0;
        padding: 1rem;
    }
    
    .certificate-display {
        padding: 1.5rem 1rem;
        margin: 1rem 0;
    }
    
    .certificate-display .score-section {
        flex-direction: column;
        gap: 8px;
    }
    
    .quiz-container {
        padding: 1rem;
    }
    
    .nav-buttons {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .nav-buttons .btn {
        width: 100%;
    }
    
    /* Touch-friendly buttons */
    .btn, .quiz-option {
        min-height: 44px;
        padding: 12px 16px;
    }
}

/* Mobile menu toggle */
.mobile-menu-toggle {
    display: none;
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 1001;
    background: var(--primary-blue);
    color: white;
    border: none;
    border-radius: 4px;
    padding: 8px 12px;
    cursor: pointer;
}

@media (max-width: 768px) {
    .mobile-menu-toggle {
        display: block;
    }
}

/* PWA-ready styles */
@media (display-mode: standalone) {
    .app-container {
        padding-top: env(safe-area-inset-top);
        padding-bottom: env(safe-area-inset-bottom);
    }
}