/* ===================================
   Learning Management System Wiki
   Professional Styling
   =================================== */

:root {
  /* Color Palette */
  --primary-color: #2563eb;
  --secondary-color: #7c3aed;
  --accent-color: #06b6d4;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --danger-color: #ef4444;

  /* Tech Stack Colors */
  --angular-red: #dd0031;
  --django-green: #092e20;
  --mongodb-green: #47a248;
  --redis-red: #dc382d;
  --docker-blue: #2496ed;
  --k8s-blue: #326ce5;
  --aws-orange: #ff9900;

  /* Neutral Colors */
  --dark-bg: #0f172a;
  --darker-bg: #020617;
  --card-bg: #1e293b;
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --border-color: #334155;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 1.5rem;
  --spacing-lg: 2rem;
  --spacing-xl: 3rem;
  --spacing-2xl: 4rem;

  /* Typography */
  --font-primary: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
  --font-code: "Fira Code", "Monaco", "Courier New", monospace;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  --shadow-glow: 0 0 20px rgba(37, 99, 235, 0.3);
}

/* ===================================
   Base Styles
   =================================== */

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-primary);
  background: linear-gradient(135deg, var(--darker-bg) 0%, var(--dark-bg) 100%);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Override default link colors to white */
a {
  color: var(--text-primary);
  text-decoration: none;
}

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

a:visited {
  color: var(--text-primary);
}

/* Links in text content */
p a,
li a:not(.nav-links a):not(.footer-links a):not(.card-link):not(.btn) {
  color: var(--text-primary);
  text-decoration: underline;
  text-decoration-color: var(--primary-color);
  text-underline-offset: 3px;
  transition: all 0.3s ease;
}

p a:hover,
li a:not(.nav-links a):not(.footer-links a):not(.card-link):not(.btn):hover {
  color: var(--primary-color);
  text-decoration-color: var(--secondary-color);
}

/* Code links */
code a {
  color: var(--accent-color);
  text-decoration: underline;
}

/* ===================================
   Navigation
   =================================== */

nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-color);
  padding: var(--spacing-sm) 0;
  z-index: 1000;
  transition: all 0.3s ease;
}

nav.scrolled {
  box-shadow: var(--shadow-lg);
}

/* Scroll Progress Bar */
.progress-container {
  position: fixed;
  top: 70px;
  left: 0;
  width: 100%;
  height: 4px;
  background: rgba(51, 65, 85, 0.3);
  z-index: 999;
  overflow: hidden;
}

.progress-bar {
  height: 100%;
  background: linear-gradient(
    90deg,
    var(--primary-color),
    var(--secondary-color),
    var(--accent-color)
  );
  background-size: 200% 100%;
  width: 0%;
  transition: width 0.1s ease;
  animation: gradient-shift 3s ease infinite;
  box-shadow: 0 0 10px rgba(37, 99, 235, 0.5);
}

@keyframes gradient-shift {
  0% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
  100% {
    background-position: 0% 50%;
  }
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-md);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  transition: transform 0.3s ease;
}

.logo:hover {
  transform: scale(1.05);
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.nav-links {
  display: flex;
  gap: var(--spacing-md);
  list-style: none;
}

.nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  transition: all 0.3s ease;
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--text-primary);
  background: var(--card-bg);
}

.nav-links a.active {
  color: var(--primary-color);
  background: rgba(37, 99, 235, 0.1);
}

/* Mobile Menu */
.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--text-primary);
  font-size: 1.75rem;
  cursor: pointer;
  padding: var(--spacing-sm);
  z-index: 1001;
  transition: transform 0.3s ease;
}

.mobile-menu-btn:hover {
  color: var(--primary-color);
  transform: scale(1.1);
}

.mobile-menu-btn:active {
  transform: scale(0.95);
}

/* ===================================
   Hero Section
   =================================== */

.hero {
  padding: calc(84px + var(--spacing-2xl)) var(--spacing-md) var(--spacing-2xl);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(
    circle,
    rgba(37, 99, 235, 0.1) 0%,
    transparent 70%
  );
  animation: pulse 15s ease-in-out infinite;
}

@keyframes pulse {
  0%,
  100% {
    transform: scale(1);
    opacity: 1;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.8;
  }
}

.hero-content {
  max-width: 1200px;
  margin: 0 auto;
  position: relative;
  z-index: 1;
}

.hero-logo {
  width: 120px;
  height: 120px;
  margin: 0 auto var(--spacing-md);
  animation: float 3s ease-in-out infinite;
}

@keyframes float {
  0%,
  100% {
    transform: translateY(0px);
  }
  50% {
    transform: translateY(-10px);
  }
}

h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(
    135deg,
    var(--text-primary),
    var(--primary-color)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.5rem);
  color: var(--text-secondary);
  margin-bottom: var(--spacing-lg);
  max-width: 800px;
  margin-left: auto;
  margin-right: auto;
}

.tech-badges {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-top: var(--spacing-lg);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  border-radius: 9999px;
  font-weight: 600;
  font-size: 0.875rem;
  transition: all 0.3s ease;
  border: 2px solid transparent;
}

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

.badge-angular {
  background: var(--angular-red);
  color: white;
}
.badge-django {
  background: var(--django-green);
  color: white;
}
.badge-mongodb {
  background: var(--mongodb-green);
  color: white;
}
.badge-redis {
  background: var(--redis-red);
  color: white;
}
.badge-docker {
  background: var(--docker-blue);
  color: white;
}
.badge-k8s {
  background: var(--k8s-blue);
  color: white;
}
.badge-aws {
  background: var(--aws-orange);
  color: white;
}

.cta-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  margin-top: var(--spacing-xl);
  flex-wrap: wrap;
}

.btn {
  padding: 0.875rem 2rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  text-decoration: none;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
  border: 2px solid transparent;
  font-size: 1rem;
}

.btn-primary {
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-glow);
}

.btn-secondary {
  background: transparent;
  color: var(--text-primary);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background: var(--card-bg);
  border-color: var(--primary-color);
}

/* ===================================
   Sections
   =================================== */

section {
  padding: var(--spacing-2xl) var(--spacing-md);
  max-width: 1400px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-xl);
}

.section-title {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 700px;
  margin: 0 auto;
}

/* ===================================
   Cards
   =================================== */

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 300px), 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.card {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  transition: all 0.3s ease;
  position: relative;
  overflow: hidden;
  max-width: 100%;
  box-sizing: border-box;
}

.card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--primary-color),
    var(--secondary-color)
  );
  transform: scaleX(0);
  transition: transform 0.3s ease;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary-color);
}

.card:hover::before {
  transform: scaleX(1);
}

.card-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin-bottom: var(--spacing-md);
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
}

.card-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.card-description {
  color: var(--text-secondary);
  line-height: 1.6;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--primary-color);
  text-decoration: none;
  margin-top: var(--spacing-md);
  font-weight: 600;
  transition: all 0.3s ease;
}

.card-link:hover {
  gap: 0.75rem;
  color: var(--secondary-color);
}

/* ===================================
   Architecture Diagram
   =================================== */

.diagram-container {
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: var(--spacing-lg);
  margin: var(--spacing-xl) 0;
  overflow-x: auto;
}

.diagram-container .mermaid {
  display: flex;
  justify-content: center;
  min-height: 400px;
}

/* ===================================
   Timeline
   =================================== */

.timeline {
  position: relative;
  padding: var(--spacing-lg) 0;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--border-color);
}

.timeline-item {
  position: relative;
  margin-bottom: var(--spacing-xl);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-lg);
}

.timeline-content {
  background: var(--card-bg);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  position: relative;
  overflow: hidden;
  max-width: 100%;
}

.timeline-item:nth-child(even) .timeline-content {
  grid-column: 2;
}

.timeline-marker {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--primary-color);
  border: 4px solid var(--dark-bg);
  z-index: 1;
}

/* ===================================
   Stats Section
   =================================== */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 200px), 1fr));
  gap: var(--spacing-lg);
  margin-top: var(--spacing-xl);
}

.stat-card {
  text-align: center;
  padding: var(--spacing-lg);
  background: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: all 0.3s ease;
}

.stat-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary-color);
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: block;
}

.stat-label {
  color: var(--text-secondary);
  font-weight: 600;
  margin-top: var(--spacing-sm);
}

/* ===================================
   Code Blocks
   =================================== */

.code-block {
  background: #1a1b26;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 0;
  margin: var(--spacing-md) 0;
  position: relative;
  width: 100%;
  max-width: 100%;
  box-sizing: border-box;
  overflow: hidden;
}

.code-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
  background: rgba(0, 0, 0, 0.3);
  position: sticky;
  top: 0;
  z-index: 10;
}

.code-language {
  color: var(--text-secondary);
  font-size: 0.875rem;
  font-weight: 600;
}

.copy-btn {
  background: var(--primary-color);
  color: white;
  border: none;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.875rem;
  transition: all 0.3s ease;
  flex-shrink: 0;
}

.copy-btn:hover {
  background: var(--secondary-color);
}

pre {
  margin: 0;
  padding: var(--spacing-md);
  font-family: var(--font-code);
  font-size: 0.875rem;
  line-height: 1.5;
  white-space: pre;
  overflow-x: auto;
  overflow-y: hidden;
  max-width: 100%;
  box-sizing: border-box;
  -webkit-overflow-scrolling: touch;
}

code {
  font-family: var(--font-code);
  color: var(--accent-color);
  white-space: pre;
}

/* ===================================
   Tables
   =================================== */

.table-container {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-color);
  margin: var(--spacing-lg) 0;
}

table {
  width: 100%;
  border-collapse: collapse;
  background: var(--card-bg);
}

thead {
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
}

th {
  padding: var(--spacing-md);
  text-align: left;
  font-weight: 600;
  color: white;
}

td {
  padding: var(--spacing-md);
  border-bottom: 1px solid var(--border-color);
  color: var(--text-secondary);
}

tr:hover td {
  background: rgba(37, 99, 235, 0.05);
}

/* ===================================
   Tabs
   =================================== */

.tabs {
  border-bottom: 2px solid var(--border-color);
  margin-bottom: var(--spacing-lg);
}

.tab-buttons {
  display: flex;
  gap: var(--spacing-sm);
  flex-wrap: wrap;
}

.tab-btn {
  padding: var(--spacing-md) var(--spacing-lg);
  background: none;
  border: none;
  color: var(--text-secondary);
  font-weight: 600;
  cursor: pointer;
  border-bottom: 3px solid transparent;
  transition: all 0.3s ease;
}

.tab-btn:hover {
  color: var(--text-primary);
}

.tab-btn.active {
  color: var(--primary-color);
  border-bottom-color: var(--primary-color);
}

.tab-content {
  display: none;
  animation: fadeIn 0.3s ease;
}

.tab-content.active {
  display: block;
}

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

/* ===================================
   Footer
   =================================== */

footer {
  background: var(--card-bg);
  border-top: 1px solid var(--border-color);
  padding: var(--spacing-2xl) var(--spacing-md) var(--spacing-lg);
  margin-top: var(--spacing-2xl);
}

.footer-content {
  max-width: 1400px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 250px), 1fr));
  gap: var(--spacing-xl);
}

.footer-section h3 {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
  color: var(--text-primary);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color 0.3s ease;
}

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

.social-links {
  display: flex;
  gap: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--dark-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-primary);
  text-decoration: none;
  transition: all 0.3s ease;
}

.social-link:hover {
  background: var(--primary-color);
  color: white;
  transform: translateY(-3px);
}

.footer-bottom {
  max-width: 1400px;
  margin: var(--spacing-xl) auto 0;
  padding-top: var(--spacing-lg);
  border-top: 1px solid var(--border-color);
  text-align: center;
  color: var(--text-muted);
}

/* ===================================
   Scroll to Top Button
   =================================== */

.scroll-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  background: linear-gradient(
    135deg,
    var(--primary-color),
    var(--secondary-color)
  );
  color: white;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  box-shadow: var(--shadow-xl);
  opacity: 0;
  visibility: hidden;
  transition: all 0.3s ease;
  z-index: 999;
}

.scroll-top.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-glow);
}

/* ===================================
   Loading Animation
   =================================== */

.loading {
  display: inline-block;
  width: 20px;
  height: 20px;
  border: 3px solid var(--border-color);
  border-radius: 50%;
  border-top-color: var(--primary-color);
  animation: spin 1s ease-in-out infinite;
}

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

/* ===================================
   Responsive Design
   =================================== */

@media (max-width: 968px) {
  body {
    overflow-x: hidden;
  }

  section {
    padding: var(--spacing-xl) var(--spacing-sm);
  }

  .card {
    padding: var(--spacing-md);
  }

  .cards-grid {
    gap: var(--spacing-md);
  }

  .diagram-container {
    padding: var(--spacing-md);
    overflow-x: auto;
  }

  .table-container {
    font-size: 0.875rem;
  }

  td,
  th {
    padding: var(--spacing-sm);
  }

  .nav-links {
    position: fixed;
    top: 74px;
    left: 0;
    right: 0;
    background: rgba(15, 23, 42, 0.98);
    backdrop-filter: blur(10px);
    flex-direction: column;
    padding: var(--spacing-lg) var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-xl);
    transform: translateX(100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.4s ease;
    max-height: calc(100vh - 74px);
    overflow-y: auto;
  }

  .nav-links.active {
    transform: translateX(0);
    opacity: 1;
    visibility: visible;
  }

  .nav-links li {
    margin: var(--spacing-xs) 0;
    opacity: 0;
    transform: translateX(20px);
    transition: all 0.3s ease;
  }

  .nav-links.active li {
    opacity: 1;
    transform: translateX(0);
  }

  .nav-links.active li:nth-child(1) {
    transition-delay: 0.1s;
  }
  .nav-links.active li:nth-child(2) {
    transition-delay: 0.15s;
  }
  .nav-links.active li:nth-child(3) {
    transition-delay: 0.2s;
  }
  .nav-links.active li:nth-child(4) {
    transition-delay: 0.25s;
  }
  .nav-links.active li:nth-child(5) {
    transition-delay: 0.3s;
  }
  .nav-links.active li:nth-child(6) {
    transition-delay: 0.35s;
  }
  .nav-links.active li:nth-child(7) {
    transition-delay: 0.4s;
  }

  .nav-links a {
    display: block;
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 1.1rem;
    text-align: center;
  }

  .mobile-menu-btn {
    display: block;
  }

  .logo {
    font-size: 1.25rem;
  }

  .logo-icon {
    width: 35px;
    height: 35px;
    font-size: 1.25rem;
  }

  .timeline::before {
    left: 0;
  }

  .timeline-item {
    grid-template-columns: 1fr;
  }

  .timeline-item:nth-child(even) .timeline-content {
    grid-column: 1;
  }

  .timeline-marker {
    left: 0;
    transform: translateX(-50%);
  }

  .cta-buttons {
    flex-direction: column;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  .cards-grid {
    grid-template-columns: 1fr;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .hero {
    padding: calc(84px + var(--spacing-xl)) var(--spacing-md) var(--spacing-xl);
  }

  h1 {
    font-size: 2rem;
  }

  .section-title {
    font-size: 1.75rem;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }

  .tech-badges {
    gap: var(--spacing-xs);
  }

  .badge {
    font-size: 0.75rem;
    padding: 0.4rem 0.8rem;
  }

  .nav-container {
    padding: 0 var(--spacing-sm);
  }

  section {
    padding: var(--spacing-lg) var(--spacing-sm);
  }

  .card {
    padding: var(--spacing-sm);
  }

  .card-icon {
    width: 50px;
    height: 50px;
    font-size: 1.5rem;
  }

  .card-title {
    font-size: 1.25rem;
  }

  .diagram-container {
    padding: var(--spacing-sm);
  }

  .code-block {
    padding: var(--spacing-sm);
    font-size: 0.8rem;
  }

  pre {
    font-size: 0.75rem;
  }

  code {
    font-size: 0.75rem;
  }

  .footer-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-lg);
  }

  .scroll-top {
    bottom: 1rem;
    right: 1rem;
    width: 45px;
    height: 45px;
    font-size: 1.25rem;
  }
}

/* ===================================
   Utility Classes
   =================================== */

.text-center {
  text-align: center;
}
.text-left {
  text-align: left;
}
.text-right {
  text-align: right;
}

.mt-sm {
  margin-top: var(--spacing-sm);
}
.mt-md {
  margin-top: var(--spacing-md);
}
.mt-lg {
  margin-top: var(--spacing-lg);
}
.mt-xl {
  margin-top: var(--spacing-xl);
}

.mb-sm {
  margin-bottom: var(--spacing-sm);
}
.mb-md {
  margin-bottom: var(--spacing-md);
}
.mb-lg {
  margin-bottom: var(--spacing-lg);
}
.mb-xl {
  margin-bottom: var(--spacing-xl);
}

.text-primary {
  color: var(--primary-color);
}
.text-secondary {
  color: var(--text-secondary);
}
.text-muted {
  color: var(--text-muted);
}

.d-flex {
  display: flex;
}
.flex-column {
  flex-direction: column;
}
.align-center {
  align-items: center;
}
.justify-center {
  justify-content: center;
}
.gap-sm {
  gap: var(--spacing-sm);
}
.gap-md {
  gap: var(--spacing-md);
}

/* ===================================
   Print Styles
   =================================== */

@media print {
  nav,
  .scroll-top,
  .cta-buttons {
    display: none;
  }

  body {
    background: white;
    color: black;
  }

  .card,
  .code-block {
    break-inside: avoid;
  }
}