/* =====================================================
   Avrotize & Structurize - Main Stylesheet
   ===================================================== */

:root {
  /* Colors */
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-secondary: #7c3aed;
  --color-secondary-dark: #6d28d9;
  --color-avrotize: #059669;
  --color-avrotize-dark: #047857;
  --color-structurize: #d97706;
  --color-structurize-dark: #b45309;
  
  --color-bg: #0f172a;
  --color-bg-light: #1e293b;
  --color-bg-lighter: #334155;
  --color-surface: #1e293b;
  --color-surface-hover: #334155;
  
  --color-text: #f1f5f9;
  --color-text-muted: #94a3b8;
  --color-text-dim: #64748b;
  
  --color-border: #334155;
  --color-border-light: #475569;
  
  /* Typography */
  --font-heading: 'Dosis', sans-serif;
  --font-body: 'Noto Sans', sans-serif;
  --font-mono: 'Fira Code', 'Consolas', 'Monaco', monospace;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  
  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.3);
  --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.4);
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 350ms ease;
}

/* =====================================================
   Reset & Base
   ===================================================== */

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

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  color: var(--color-text);
}

h1 { font-size: 3rem; font-weight: 700; }
h2 { font-size: 2.25rem; font-weight: 600; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.25rem; }

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

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

code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: var(--color-bg-lighter);
  padding: 0.125rem 0.375rem;
  border-radius: var(--radius-sm);
}

pre {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  line-height: 1.5;
  overflow-x: auto;
}

pre code {
  background: none;
  padding: 0;
}

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

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

.top-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(15, 23, 42, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 var(--spacing-xl);
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-text);
  display: flex;
  align-items: center;
  gap: 0.375rem;
}

.nav-logo:hover {
  color: var(--color-text);
}

.logo-avro {
  color: var(--color-avrotize);
}

.logo-amp {
  color: var(--color-text-muted);
  font-weight: 400;
}

.logo-struct {
  color: var(--color-structurize);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--spacing-lg);
}

.nav-links a {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 500;
  color: var(--color-text-muted);
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text);
  background: var(--color-surface-hover);
}

.nav-github {
  display: flex;
  align-items: center;
  padding: var(--spacing-sm) !important;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--spacing-sm);
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: all var(--transition-fast);
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    flex-direction: column;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
  }
  
  .nav-links.open {
    display: flex;
  }
  
  .nav-toggle {
    display: flex;
  }
}

/* =====================================================
   Main Content
   ===================================================== */

.main-content {
  flex: 1;
  margin-top: 64px;
  width: 100%;
}

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

.hero {
  padding: var(--spacing-3xl) var(--spacing-xl);
  text-align: center;
  background: linear-gradient(135deg, var(--color-bg) 0%, var(--color-bg-light) 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(ellipse at 20% 50%, rgba(5, 150, 105, 0.15) 0%, transparent 50%),
    radial-gradient(ellipse at 80% 50%, rgba(217, 119, 6, 0.15) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.hero h1 {
  font-size: 4rem;
  font-weight: 800;
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, var(--color-avrotize) 0%, var(--color-structurize) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: 1.5rem;
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-2xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
}

.hero-buttons {
  display: flex;
  gap: var(--spacing-md);
  justify-content: center;
  flex-wrap: wrap;
}

/* =====================================================
   Buttons
   ===================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-md);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-avrotize {
  background: var(--color-avrotize);
  color: white;
}

.btn-avrotize:hover {
  background: var(--color-avrotize-dark);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-structurize {
  background: var(--color-structurize);
  color: white;
}

.btn-structurize:hover {
  background: var(--color-structurize-dark);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-outline {
  background: transparent;
  color: var(--color-text);
  border: 2px solid var(--color-border-light);
}

.btn-outline:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
  border-color: var(--color-text-muted);
}

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

.section {
  padding: var(--spacing-3xl) var(--spacing-xl);
}

.section-container {
  max-width: 1200px;
  margin: 0 auto;
}

.section-header {
  text-align: center;
  margin-bottom: var(--spacing-2xl);
}

.section-header h2 {
  margin-bottom: var(--spacing-md);
}

.section-header p {
  color: var(--color-text-muted);
  font-size: 1.125rem;
  max-width: 600px;
  margin: 0 auto;
}

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

.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--spacing-xl);
}

.feature-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  transition: all var(--transition-normal);
}

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

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--spacing-lg);
  font-size: 1.5rem;
}

.feature-icon.avrotize {
  background: rgba(5, 150, 105, 0.2);
  color: var(--color-avrotize);
}

.feature-icon.structurize {
  background: rgba(217, 119, 6, 0.2);
  color: var(--color-structurize);
}

.feature-card h3 {
  margin-bottom: var(--spacing-sm);
}

.feature-card p {
  color: var(--color-text-muted);
}

/* =====================================================
   Tools Section
   ===================================================== */

.tools-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-xl);
}

@media (max-width: 900px) {
  .tools-split {
    grid-template-columns: 1fr;
  }
}

.tool-panel {
  background: var(--color-surface);
  border-radius: var(--radius-xl);
  padding: var(--spacing-2xl);
  border: 2px solid var(--color-border);
  transition: border-color var(--transition-normal);
}

.tool-panel.avrotize:hover {
  border-color: var(--color-avrotize);
}

.tool-panel.structurize:hover {
  border-color: var(--color-structurize);
}

.tool-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.tool-badge {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 700;
}

.tool-badge.avrotize {
  color: var(--color-avrotize);
}

.tool-badge.structurize {
  color: var(--color-structurize);
}

.tool-description {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
}

.tool-formats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-lg);
}

.format-tag {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-bg-lighter);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
}

.format-tag i {
  font-size: 1.1em;
  color: var(--color-accent);
}

.format-arrow {
  color: var(--color-text-muted);
  font-size: 0.85rem;
  padding: 0 var(--spacing-xs);
}

/* =====================================================
   Gallery Page
   ===================================================== */

.gallery-page .main-content {
  display: flex;
  flex-direction: column;
}

.gallery-layout {
  flex: 1;
  display: flex;
  flex-direction: column;
}

.gallery-header {
  padding: var(--spacing-xl);
  background: var(--color-bg-light);
  border-bottom: 1px solid var(--color-border);
}

.gallery-header h1 {
  font-size: 2rem;
  margin-bottom: var(--spacing-sm);
}

.gallery-header p {
  color: var(--color-text-muted);
}

.gallery-nav {
  display: flex;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-xl);
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  overflow-x: auto;
}

.gallery-nav-item {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 500;
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.gallery-nav-item:hover,
.gallery-nav-item.active {
  color: var(--color-text);
  background: var(--color-bg-lighter);
}

.gallery-viewer {
  flex: 1;
  display: grid;
  grid-template-columns: 1fr 280px 1fr;
  min-height: calc(100vh - 200px);
}

@media (max-width: 1200px) {
  .gallery-viewer {
    grid-template-columns: 1fr;
    grid-template-rows: auto auto 1fr;
  }
}

.gallery-panel {
  display: flex;
  flex-direction: column;
  border-right: 1px solid var(--color-border);
  overflow: hidden;
}

.gallery-panel:last-child {
  border-right: none;
}

.panel-header {
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--color-bg-light);
  border-bottom: 1px solid var(--color-border);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.panel-content {
  flex: 1;
  overflow: auto;
}

/* Source Panel */
.source-panel .panel-content {
  padding: 0;
}

.source-panel pre {
  margin: 0;
  padding: var(--spacing-lg);
  height: 100%;
  background: var(--color-bg);
}

/* File Tree Panel */
.file-tree {
  padding: var(--spacing-md);
}

.tree-item {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  transition: all var(--transition-fast);
}

.tree-item:hover {
  background: var(--color-surface-hover);
  color: var(--color-text);
}

.tree-item.active {
  background: var(--color-primary);
  color: white;
}

.tree-item.folder {
  font-weight: 500;
}

.tree-icon {
  width: 20px;
  min-width: 20px;
  text-align: center;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

/* Devicon styling in tree view */
.tree-icon i[class*="devicon-"] {
  font-size: 16px;
  line-height: 1;
}

/* Colored devicons */
.tree-icon i.colored {
  /* Let devicon colors show through */
}

.tree-children {
  margin-left: var(--spacing-lg);
}

/* Output Panel */
.output-panel .panel-content {
  padding: 0;
}

.output-panel pre {
  margin: 0;
  padding: var(--spacing-lg);
  height: 100%;
  background: var(--color-bg);
}

/* =====================================================
   Gallery Index
   ===================================================== */

.gallery-index {
  padding: var(--spacing-2xl) var(--spacing-xl);
}

.gallery-section {
  margin-top: var(--spacing-3xl);
}

.gallery-section:first-child {
  margin-top: 0;
}

.gallery-section .section-header {
  margin-bottom: var(--spacing-xl);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--spacing-xl);
  max-width: 1400px;
  margin: 0 auto;
}

.gallery-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-normal);
}

.gallery-card:hover {
  border-color: var(--color-border-light);
  transform: translateY(-4px);
  box-shadow: var(--shadow-xl);
}

.gallery-card-header {
  padding: var(--spacing-lg);
  background: var(--color-bg-light);
  border-bottom: 1px solid var(--color-border);
}

.gallery-card-title {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: var(--spacing-xs);
}

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

.gallery-card-body {
  padding: var(--spacing-lg);
}

.gallery-card-formats {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.gallery-card-command {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--color-bg);
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-border);
}

.gallery-card-command .command-code {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-accent);
  flex: 1;
}

.gallery-card-command .command-docs-link {
  font-size: 0.65rem;
  color: var(--color-text-muted);
  text-decoration: none;
  padding: 2px 6px;
  background: var(--color-bg-lighter);
  border-radius: var(--radius-sm);
  transition: all 0.15s ease;
}

.gallery-card-command .command-docs-link:hover {
  color: var(--color-accent);
  background: var(--color-bg-darker);
}

.gallery-card-link {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: var(--font-heading);
  font-weight: 500;
  color: var(--color-primary);
}

.gallery-card-link:hover {
  color: var(--color-primary-dark);
}

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

pre[class*="language-"] {
  background: var(--color-bg) !important;
  margin: 0;
  border-radius: 0;
}

code[class*="language-"] {
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.line-numbers .line-numbers-rows {
  border-right: 1px solid var(--color-border);
}

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

.site-footer {
  background: var(--color-bg-light);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-2xl) var(--spacing-xl);
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--spacing-2xl);
}

.footer-section h4 {
  font-size: 1rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

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

.footer-section ul {
  list-style: none;
}

.footer-section li {
  margin-bottom: var(--spacing-sm);
}

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

.footer-section a:hover {
  color: var(--color-text);
}

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

.gallery-tabs {
  display: flex;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-xl);
  border-bottom: 2px solid var(--color-border);
  padding-bottom: var(--spacing-xs);
}

.gallery-tab {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  padding: var(--spacing-sm) var(--spacing-lg);
  color: var(--color-text-muted);
  background: transparent;
  border: none;
  border-bottom: 3px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  margin-bottom: -2px;
}

.gallery-tab .tab-title {
  font-size: 1rem;
  font-weight: 600;
}

.gallery-tab .tab-subtitle {
  font-size: 0.75rem;
  opacity: 0.7;
}

.gallery-tab:hover {
  color: var(--color-accent);
}

.gallery-tab.active {
  color: var(--color-accent);
  border-bottom-color: var(--color-accent);
}

.gallery-tab-content {
  display: none;
}

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

.gallery-command {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  background: var(--color-bg-darker);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--radius-sm);
  color: var(--color-text-muted);
  margin-top: var(--spacing-sm);
  overflow-x: auto;
  white-space: nowrap;
}

.gallery-command a {
  color: var(--color-accent);
  text-decoration: none;
}

.gallery-command a:hover {
  text-decoration: underline;
}

/* =====================================================
   Binary File Notice
   ===================================================== */

.binary-file-notice {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-2xl);
  text-align: center;
  height: 100%;
  min-height: 200px;
}

.binary-file-notice .binary-icon {
  font-size: 3rem;
  margin-bottom: var(--spacing-md);
  opacity: 0.6;
}

.binary-file-notice .binary-text {
  color: var(--color-text-muted);
  margin-bottom: var(--spacing-lg);
  font-size: 0.95rem;
}

.binary-file-notice .download-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  background: var(--color-accent);
  color: var(--color-bg);
  border-radius: var(--radius-md);
  text-decoration: none;
  font-weight: 500;
  transition: all 0.2s ease;
}

.binary-file-notice .download-btn:hover {
  background: var(--color-primary-dark);
  transform: translateY(-1px);
}

/* =====================================================
   Markdown Rendered Content
   ===================================================== */

.markdown-rendered {
  padding: var(--spacing-lg);
  color: var(--color-text);
  line-height: 1.7;
  overflow-y: auto;
}

.markdown-rendered h1 {
  font-size: 1.75rem;
  margin: var(--spacing-lg) 0 var(--spacing-md);
  padding-bottom: var(--spacing-sm);
  border-bottom: 1px solid var(--color-border);
}

.markdown-rendered h2 {
  font-size: 1.4rem;
  margin: var(--spacing-lg) 0 var(--spacing-sm);
}

.markdown-rendered h3 {
  font-size: 1.15rem;
  margin: var(--spacing-md) 0 var(--spacing-sm);
}

.markdown-rendered p {
  margin: var(--spacing-sm) 0;
}

.markdown-rendered code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-bg-lighter);
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

.markdown-rendered pre {
  background: var(--color-bg);
  padding: var(--spacing-md);
  border-radius: var(--radius-md);
  overflow-x: auto;
  margin: var(--spacing-md) 0;
}

.markdown-rendered pre code {
  background: none;
  padding: 0;
}

.markdown-rendered ul {
  margin: var(--spacing-sm) 0;
  padding-left: var(--spacing-lg);
}

.markdown-rendered li {
  margin: var(--spacing-xs) 0;
}

.markdown-rendered a {
  color: var(--color-accent);
}

.markdown-rendered .md-table {
  width: 100%;
  border-collapse: collapse;
  margin: var(--spacing-md) 0;
  font-size: 0.9rem;
}

.markdown-rendered .md-table td,
.markdown-rendered .md-table th {
  padding: var(--spacing-sm);
  border: 1px solid var(--color-border);
  text-align: left;
}

.markdown-rendered .md-table tr:nth-child(odd) {
  background: var(--color-bg-lighter);
}

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

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

.mt-1 { margin-top: var(--spacing-sm); }
.mt-2 { margin-top: var(--spacing-md); }
.mt-3 { margin-top: var(--spacing-lg); }
.mt-4 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-sm); }
.mb-2 { margin-bottom: var(--spacing-md); }
.mb-3 { margin-bottom: var(--spacing-lg); }
.mb-4 { margin-bottom: var(--spacing-xl); }

/* =====================================================
   Responsive Adjustments
   ===================================================== */

@media (max-width: 768px) {
  h1 { font-size: 2.25rem; }
  h2 { font-size: 1.75rem; }
  
  .hero h1 {
    font-size: 2.5rem;
  }
  
  .hero-subtitle {
    font-size: 1.125rem;
  }
  
  .section {
    padding: var(--spacing-2xl) var(--spacing-md);
  }
}