/* Modern Documentation-Style Portfolio */
/* Inspired by Ghostty Documentation Design */

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

/* ==================== CSS Variables ==================== */
:root {
  /* Colors - Ghostty-Inspired GitHub Dark Theme */
  --bg-primary: #0d1117;
  --bg-secondary: #161b22;
  --bg-tertiary: #21262d;
  --bg-hover: #30363d;

  --accent-primary: #58a6ff;
  --accent-hover: #79c0ff;
  --accent-secondary: #eab308;
  --accent-success: #3fb950;
  --accent-tertiary: #fbbf24;

  --text-primary: #e6edf3;
  --text-secondary: #8d96a0;
  --text-muted: #6e7681;
  --text-inverse: #ffffff;

  --border-color: #30363d;
  --border-light: #424a53;

  /* Spacing */
  --sidebar-width: 260px;
  --header-height: 64px;
  --content-max-width: 1200px;

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', system-ui, sans-serif;
  --font-heading: 'Roboto Condensed', sans-serif;
  --font-mono: 'Roboto Mono', 'Courier New', monospace;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;

  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.5);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.6);
}

/* ==================== Base Styles ==================== */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

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

body {
  font-family: var(--font-primary);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ==================== Typography ==================== */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  margin-bottom: 1rem;
}

h1 {
  font-size: 3.5rem;
  font-weight: 300;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2.5rem;
  font-weight: 400;
  margin-top: 3rem;
}

h3 {
  font-size: 1.75rem;
  font-weight: 500;
  margin-top: 2rem;
}

h4 {
  font-size: 1.25rem;
  font-weight: 600;
}

p {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 1rem;
}

a {
  color: var(--accent-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--accent-hover);
  text-decoration: underline;
}

code {
  font-family: var(--font-mono);
  background-color: var(--bg-tertiary);
  padding: 0.2em 0.4em;
  border-radius: 4px;
  font-size: 0.9em;
}

/* ==================== Layout ==================== */
.page-container {
  display: flex;
  min-height: 100vh;
}

/* ==================== Sidebar Navigation ==================== */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background-color: var(--bg-secondary);
  border-right: 1px solid var(--border-color);
  padding: 2rem 0;
  overflow-y: auto;
  z-index: 1000;
  transition: transform var(--transition-normal);
}

.sidebar-header {
  padding: 0 1.5rem 2rem;
  border-bottom: 1px solid var(--border-color);
}

.sidebar-header h3 {
  font-size: 1.5rem;
  margin: 0;
  font-weight: 600;
}

.sidebar-header p {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin: 0.25rem 0 0;
}

.sidebar-nav {
  padding: 1.5rem 0;
}

.nav-section {
  margin-bottom: 2rem;
}

.nav-section-title {
  font-size: 0.6875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-muted);
  padding: 0.5rem 1.5rem;
  margin-bottom: 0.75rem;
}

.nav-list {
  list-style: none;
}

.nav-item {
  margin-bottom: 0.25rem;
}

.nav-link {
  display: flex;
  align-items: center;
  padding: 0.5rem 1.5rem;
  color: var(--text-secondary);
  font-size: 0.875rem;
  transition: all 100ms ease;
  border-left: 2px solid transparent;
}

.nav-link:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
  text-decoration: none;
}

.nav-link.active {
  background-color: var(--bg-tertiary);
  color: var(--accent-primary);
  border-left-color: var(--accent-primary);
  font-weight: 500;
}

.nav-sublist {
  list-style: none;
  margin-top: 0.25rem;
}

.nav-sublist .nav-link {
  padding-left: 2.5rem;
  font-size: 0.875rem;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  position: fixed;
  top: 1rem;
  left: 1rem;
  z-index: 1100;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 0.75rem;
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.menu-toggle:hover {
  background-color: var(--bg-tertiary);
}

.menu-toggle-icon {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  position: relative;
  transition: background-color var(--transition-fast);
}

.menu-toggle-icon::before,
.menu-toggle-icon::after {
  content: '';
  position: absolute;
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  transition: transform var(--transition-fast);
}

.menu-toggle-icon::before {
  top: -8px;
}

.menu-toggle-icon::after {
  top: 8px;
}

.menu-toggle.active .menu-toggle-icon {
  background-color: transparent;
}

.menu-toggle.active .menu-toggle-icon::before {
  transform: rotate(45deg) translate(5px, 6px);
}

.menu-toggle.active .menu-toggle-icon::after {
  transform: rotate(-45deg) translate(5px, -6px);
}

/* ==================== Main Content ==================== */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-height: 100vh;
  padding-top: var(--header-height);
}

.content-wrapper {
  max-width: var(--content-max-width);
  margin: 0 auto;
  padding: 3rem 2rem;
}

/* ==================== Hero Section ==================== */
.hero-section {
  margin-bottom: 4rem;
}

.hero-title {
  margin-bottom: 0.5rem;
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--accent-primary);
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.hero-description {
  font-size: 1.125rem;
  max-width: 700px;
  margin-bottom: 2rem;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-top: 2rem;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-primary);
}

.badge.award {
  background-color: rgba(234, 179, 8, 0.1);
  border-color: var(--accent-secondary);
  color: var(--accent-secondary);
}

/* ==================== Section Styles ==================== */
.section {
  margin-bottom: 5rem;
}

.section-header {
  margin-bottom: 2.5rem;
}

.section-title {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 0.5rem;
}

.section-description {
  font-size: 1.125rem;
}

/* ==================== Project Cards Grid ==================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(340px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.project-card {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(90deg, var(--accent-primary), var(--accent-secondary));
  opacity: 0;
  transition: opacity var(--transition-normal);
}

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

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

.project-header {
  margin-bottom: 1rem;
}

.project-title {
  font-size: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.project-award {
  display: inline-block;
  font-size: 0.8125rem;
  color: var(--accent-secondary);
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.project-description {
  flex: 1;
  margin-bottom: 1.5rem;
  font-size: 0.9375rem;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.tech-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.25rem 0.625rem;
  background-color: var(--bg-tertiary);
  border: 1px solid var(--border-light);
  border-radius: 4px;
  color: var(--text-secondary);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--accent-primary);
  font-weight: 500;
  font-size: 0.9375rem;
}

.project-link:hover {
  gap: 0.75rem;
}

/* ==================== Skills Section ==================== */
.skills-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
}

.skill-category {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 1.5rem;
}

.skill-category-title {
  font-size: 1.125rem;
  margin-bottom: 1rem;
  color: var(--accent-primary);
}

.skill-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.skill-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.875rem;
  background-color: var(--bg-tertiary);
  border-radius: 8px;
  font-size: 0.875rem;
  transition: transform var(--transition-fast);
}

.skill-item:hover {
  transform: translateY(-2px);
}

.skill-icon {
  width: 20px;
  height: 20px;
  object-fit: contain;
}

/* ==================== Experience Timeline ==================== */
.timeline {
  position: relative;
  padding-left: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(180deg, var(--accent-primary), transparent);
}

.timeline-item {
  position: relative;
  padding-bottom: 3rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -2.375rem;
  top: 0.5rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--accent-primary);
  border: 3px solid var(--bg-primary);
}

.timeline-item.current::before {
  background-color: var(--accent-secondary);
  box-shadow: 0 0 0 4px rgba(234, 179, 8, 0.2);
}

.timeline-header {
  margin-bottom: 0.75rem;
}

.timeline-role {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.timeline-company {
  font-size: 1rem;
  color: var(--accent-primary);
  margin-bottom: 0.25rem;
}

.timeline-date {
  font-size: 0.875rem;
  color: var(--text-muted);
}

.timeline-description {
  margin-top: 0.75rem;
}

.timeline-description ul {
  list-style: none;
  padding-left: 0;
}

.timeline-description li {
  position: relative;
  padding-left: 1.5rem;
  margin-bottom: 0.5rem;
  color: var(--text-secondary);
  font-size: 0.9375rem;
}

.timeline-description li::before {
  content: '▹';
  position: absolute;
  left: 0;
  color: var(--accent-primary);
}

/* ==================== Buttons ==================== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 8px;
  font-weight: 500;
  font-size: 0.9375rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  border: none;
  text-decoration: none;
}

.btn-primary {
  background-color: var(--accent-primary);
  color: var(--text-inverse);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  text-decoration: none;
}

.btn-secondary {
  background-color: transparent;
  color: var(--accent-primary);
  border: 1px solid var(--accent-primary);
}

.btn-secondary:hover {
  background-color: rgba(59, 130, 246, 0.1);
  text-decoration: none;
}

/* ==================== Footer ==================== */
.footer {
  border-top: 1px solid var(--border-color);
  padding: 3rem 2rem;
  margin-top: 5rem;
  text-align: center;
}

.footer-content {
  max-width: var(--content-max-width);
  margin: 0 auto;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 2rem;
  margin-bottom: 1.5rem;
  flex-wrap: wrap;
}

.footer-link {
  color: var(--text-secondary);
  font-size: 0.9375rem;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--accent-primary);
}

.footer-text {
  color: var(--text-muted);
  font-size: 0.875rem;
}

/* ==================== Project Page Specific ==================== */
.project-hero {
  padding: 3rem 0;
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 3rem;
}

.project-hero .hero-title {
  font-size: 3.5rem;
  font-weight: 300;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
  margin-top: 0;
}

.project-hero .hero-subtitle {
  font-size: 1.5rem;
  color: var(--accent-primary);
  margin-bottom: 1.5rem;
  font-weight: 500;
}

.project-hero .hero-description {
  font-size: 1.125rem;
  color: var(--text-secondary);
  max-width: 800px;
  margin-bottom: 2rem;
  line-height: 1.7;
}

.project-hero .badge {
  margin-bottom: 1rem;
}

.project-meta {
  display: flex;
  gap: 2rem;
  margin-top: 2rem;
  flex-wrap: wrap;
}

.meta-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.meta-label {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-muted);
}

.meta-value {
  font-size: 1rem;
  font-weight: 500;
  color: var(--text-primary);
}

.content-section {
  margin-bottom: 3rem;
}

.content-section ul {
  list-style: disc;
  padding-left: 2rem;
  color: var(--text-secondary);
  margin-top: 1rem;
}

.content-section ul li {
  margin-bottom: 0.5rem;
}

.content-section ul li strong {
  color: var(--text-primary);
}

.feature-list {
  list-style: none;
  display: grid;
  gap: 1rem;
  margin-top: 1rem;
}

.feature-item {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
}

.feature-icon {
  flex-shrink: 0;
  width: 24px;
  height: 24px;
  color: var(--accent-primary);
}

.feature-content h4 {
  margin-bottom: 0.5rem;
  font-size: 1rem;
}

.feature-content p {
  margin: 0;
  font-size: 0.9375rem;
}

/* ==================== Game Embed ==================== */
.game-container {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 2rem;
  margin: 2rem 0;
}

.game-wrapper {
  position: relative;
  width: 100%;
  padding-bottom: 56.25%; /* 16:9 Aspect Ratio */
  background-color: var(--bg-primary);
  border-radius: 8px;
  overflow: hidden;
}

.game-wrapper iframe,
.game-wrapper canvas {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

/* ==================== Responsive Images ==================== */
.image-figure {
  margin: 2rem 0;
  text-align: center;
}

.responsive-image {
  max-width: 800px;
  width: 100%;
  height: auto;
  display: block;
  margin: 0 auto;
  border-radius: 8px;
  border: 1px solid var(--border-color);
}

figcaption {
  margin-top: 0.75rem;
  font-size: 0.875rem;
  color: var(--text-muted);
  font-style: italic;
}

/* ==================== Ghostty-Inspired Components ==================== */

/* Top Navigation Bar */
.top-nav {
  position: fixed;
  top: 0;
  left: var(--sidebar-width);
  right: 0;
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
  padding: 0.75rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  z-index: 999;
  backdrop-filter: blur(8px);
  height: var(--header-height);
}

.top-nav-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: 1.125rem;
  color: var(--text-primary);
  font-weight: 600;
}

.top-nav-brand .separator {
  color: var(--text-muted);
  font-weight: 400;
  font-size: 1rem;
}

.top-nav-brand .subtitle {
  color: var(--text-muted);
  font-weight: 400;
  font-size: 0.875rem;
}

.top-nav-links {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.top-nav-links a {
  color: var(--text-secondary);
  text-decoration: none;
  font-size: 0.875rem;
  font-weight: 500;
  transition: color var(--transition-fast);
}

.top-nav-links a:hover {
  color: var(--accent-primary);
  text-decoration: none;
}

.top-nav-links .nav-cta {
  background: var(--accent-primary);
  color: var(--text-inverse) !important;
  padding: 0.5rem 1.25rem;
  border-radius: 6px;
  text-decoration: none;
  font-weight: 600;
  font-size: 0.875rem;
  transition: all var(--transition-fast);
}

.top-nav-links .nav-cta:hover {
  background: var(--accent-hover);
  transform: translateY(-1px);
  color: var(--text-inverse) !important;
  text-decoration: none;
}

/* Breadcrumb Navigation */
.breadcrumb {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 2rem;
  font-size: 0.8125rem;
  color: var(--text-muted);
}

.breadcrumb a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.breadcrumb a:hover {
  color: var(--accent-primary);
  text-decoration: none;
}

.breadcrumb .separator {
  color: var(--text-muted);
}

.breadcrumb .current {
  color: var(--text-primary);
}

/* Enhanced Section Headers */
.section-header-enhanced {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1.5rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-color);
}

.section-header-enhanced h2 {
  font-size: 1.5rem;
  margin: 0;
}

.edit-link {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.8125rem;
  transition: color var(--transition-fast);
}

.edit-link:hover {
  color: var(--accent-primary);
  text-decoration: none;
}

/* Sidebar Icons */
.nav-icon {
  margin-right: 0.5rem;
  font-size: 0.875rem;
  opacity: 0.8;
}

/* Enhanced Badges */
.badge.success {
  background-color: rgba(63, 185, 80, 0.1);
  border-color: rgba(63, 185, 80, 0.3);
  color: var(--accent-success);
}

.badge.primary {
  background-color: rgba(88, 166, 255, 0.1);
  border-color: rgba(88, 166, 255, 0.3);
  color: var(--accent-primary);
}

/* Documentation-Style Cards */
.docs-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-bottom: 3rem;
}

.doc-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  padding: 1.5rem;
  transition: all 200ms ease;
  cursor: pointer;
  display: flex;
  flex-direction: column;
}

.doc-card:hover {
  border-color: var(--accent-primary);
  box-shadow: 0 8px 16px rgba(0, 0, 0, 0.4);
  transform: translateY(-2px);
}

.doc-card h3 {
  font-size: 1.125rem;
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.doc-card p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  line-height: 1.6;
  margin-bottom: 1rem;
  flex: 1;
}

.doc-card .card-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-top: auto;
}

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

/* Tablet */
@media (max-width: 1024px) {
  :root {
    --sidebar-width: 240px;
  }

  h1 {
    font-size: 3rem;
  }

  h2 {
    font-size: 2.25rem;
  }

  .projects-grid {
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  }

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

  .content-wrapper {
    padding: 2.5rem 1.5rem;
  }

  .responsive-image {
    max-width: 95%;
  }

  .top-nav-links {
    gap: 1rem;
  }
}

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

  .sidebar {
    transform: translateX(-100%);
  }

  .sidebar.active {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
  }

  .top-nav {
    left: 0;
    padding: 0.75rem 1rem;
    padding-left: 4rem; /* Account for menu toggle */
  }

  .top-nav-links {
    display: none;
  }

  .top-nav-brand {
    font-size: 1rem;
  }

  .content-wrapper {
    padding: 2rem 1rem;
    padding-top: 4rem; /* Account for menu toggle */
  }

  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  h3 {
    font-size: 1.5rem;
  }

  .hero-section {
    padding: 2rem 0;
  }

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

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

  .skills-container {
    grid-template-columns: 1fr;
  }

  .project-meta {
    flex-direction: column;
    gap: 1rem;
  }

  .timeline {
    padding-left: 1.5rem;
  }

  .footer-links {
    flex-direction: column;
    gap: 1rem;
  }

  .responsive-image {
    max-width: 100%;
  }

  .image-figure {
    margin: 1.5rem 0;
  }

  .section-header-enhanced {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }
}

/* Small Mobile */
@media (max-width: 480px) {
  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  .hero-subtitle {
    font-size: 1.25rem;
  }

  .project-card {
    padding: 1.5rem;
  }

  .skill-category {
    padding: 1rem;
  }

  .responsive-image {
    border-radius: 4px;
  }
}

/* ==================== Utility Classes ==================== */
.text-center {
  text-align: center;
}

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }
.mb-4 { margin-bottom: 2rem; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mt-4 { margin-top: 2rem; }