/* Landing Page Styles - Harmonica Hero */

/* ============================================
   CSS Reset and Base Styles
   ============================================ */

/* Modern CSS Reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
}

body {
  min-height: 100vh;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}

input, button, textarea, select {
  font: inherit;
}

p, h1, h2, h3, h4, h5, h6 {
  overflow-wrap: break-word;
}

/* ============================================
   Accessibility - Skip to Content Link
   ============================================ */

/* Skip to content link for keyboard users */
.skip-to-content {
  position: absolute;
  top: -100px;
  left: 0;
  background-color: #0066cc;
  color: #ffffff;
  padding: var(--space-md) var(--space-lg);
  text-decoration: none;
  font-weight: 600;
  z-index: 9999;
  border-radius: 0 0 var(--radius-md) 0;
  transition: top var(--transition-fast);
}

.skip-to-content:focus {
  top: 0;
  outline: 3px solid #ffffff;
  outline-offset: -3px;
}

/* ============================================
   Accessibility - Focus Indicators
   ============================================ */

/* Enhanced focus indicators for all interactive elements */
a:focus,
button:focus,
input:focus,
textarea:focus,
select:focus {
  outline: 3px solid #0066cc;
  outline-offset: 2px;
}

/* Ensure focus is visible even with custom styles */
a:focus-visible,
button:focus-visible,
input:focus-visible,
textarea:focus-visible,
select:focus-visible {
  outline: 3px solid #0066cc;
  outline-offset: 2px;
}

/* ============================================
   Typography - System Font Stack
   ============================================ */

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, 
               "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  color: #333;
  background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 50%, #f0f0f0 100%);
  background-attachment: fixed;
  min-height: 100vh;
}

h1, h2, h3, h4, h5, h6 {
  font-weight: 600;
  line-height: 1.2;
}

h1 {
  font-size: 2.5rem;
}

h2 {
  font-size: 2rem;
}

h3 {
  font-size: 1.5rem;
}

h4 {
  font-size: 1.25rem;
}

h5 {
  font-size: 1.125rem;
}

h6 {
  font-size: 1rem;
}

p {
  margin-bottom: 1rem;
}

a {
  color: #0066cc;
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ============================================
   Spacing Variables (Custom Properties)
   ============================================ */

:root {
  /* Spacing scale */
  --space-xs: 0.25rem;    /* 4px */
  --space-sm: 0.5rem;     /* 8px */
  --space-md: 1rem;       /* 16px */
  --space-lg: 1.5rem;     /* 24px */
  --space-xl: 2rem;       /* 32px */
  --space-2xl: 3rem;      /* 48px */
  --space-3xl: 4rem;      /* 64px */
  --space-4xl: 5rem;      /* 80px */
  
  /* Container widths */
  --container-sm: 640px;
  --container-md: 768px;
  --container-lg: 1024px;
  --container-xl: 1200px;
  
  /* Typography scale */
  --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: 2rem;       /* 32px */
  --text-4xl: 2.5rem;     /* 40px */
  
  /* Colors - WCAG AA compliant (4.5:1 contrast ratio minimum) */
  --color-text-primary: #1a1a1a;      /* Contrast ratio with white: 16.1:1 ✓ */
  --color-text-secondary: #4a4a4a;    /* Contrast ratio with white: 9.7:1 ✓ */
  --color-text-muted: #666666;        /* Contrast ratio with white: 5.7:1 ✓ */
  --color-background: #ffffff;
  --color-background-alt: #f9f9f9;
  --color-border: #e0e0e0;
  --color-link: #0066cc;              /* Contrast ratio with white: 4.5:1 ✓ */
  --color-link-hover: #0052a3;        /* Contrast ratio with white: 5.9:1 ✓ */
  --color-cta-bg: #0066cc;            /* Used with white text: 4.5:1 ✓ */
  --color-cta-hover: #0052a3;         /* Used with white text: 5.9:1 ✓ */
  
  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 4px 8px rgba(0, 0, 0, 0.15);
  
  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;
}

/* ============================================
   Layout Utilities
   ============================================ */

/* Container for centering content with max-width */
.container {
  width: 100%;
  max-width: var(--container-xl);
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ============================================
   Header and Navigation
   ============================================ */

header {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-md) var(--space-lg);
}

nav {
  max-width: var(--container-xl);
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

/* Logo styling with colored "Hero" */
.logo-hero {
  color: #0066cc;
}

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

#hero {
  padding: var(--space-2xl) var(--space-lg);
  text-align: center;
  background: linear-gradient(135deg, rgba(255, 255, 255, 0.85) 0%, rgba(240, 245, 255, 0.75) 100%);
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
}

.hero-content {
  max-width: var(--container-md);
  margin: 0 auto;
}

#hero h1 {
  font-size: var(--text-3xl);
  font-weight: 700;
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

.hero-headline {
  font-size: var(--text-2xl);
  font-weight: 600;
  margin-bottom: var(--space-lg);
  color: var(--color-text-primary);
  line-height: 1.3;
}

.hero-subheadline {
  font-size: var(--text-lg);
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* CTA Button */
.cta-button {
  display: inline-block;
  padding: var(--space-md) var(--space-xl);
  font-size: var(--text-lg);
  font-weight: 600;
  color: #ffffff;
  background-color: var(--color-cta-bg);
  border: none;
  border-radius: var(--radius-md);
  text-decoration: none;
  cursor: pointer;
  transition: background-color var(--transition-base), transform var(--transition-fast);
  box-shadow: var(--shadow-md);
}

.cta-button:hover {
  background-color: var(--color-cta-hover);
  text-decoration: none;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.cta-button:focus {
  outline: 3px solid #ffffff;
  outline-offset: 2px;
  background-color: var(--color-cta-hover);
}

.cta-button:active {
  transform: translateY(0);
}

/* ============================================
   How It Works Section
   ============================================ */

#how-it-works {
  padding: var(--space-2xl) var(--space-lg);
  max-width: var(--container-xl);
  margin: 0 auto;
}

#how-it-works h2 {
  text-align: center;
  font-size: var(--text-3xl);
  margin-bottom: 2.5rem;
  color: var(--color-text-primary);
}

/* Mobile-first: Single column layout */
.steps-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.step {
  text-align: center;
  padding: var(--space-lg);
}

.step-icon {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-md);
  line-height: 1;
}

.step h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.step p {
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-secondary);
  max-width: 400px;
  margin: 0 auto;
}

/* Tablet: Two-column layout (≥768px) */
@media (min-width: 768px) {
  header {
    padding: var(--space-lg) var(--space-xl);
  }
  
  #hero {
    padding: var(--space-4xl) var(--space-xl);
    min-height: 70vh;
  }
  
  #hero h1 {
    font-size: var(--text-4xl);
  }
  
  .hero-headline {
    font-size: var(--text-3xl);
  }
  
  .hero-subheadline {
    font-size: var(--text-xl);
  }
  
  #how-it-works {
    padding: var(--space-4xl) var(--space-xl);
  }
  
  .steps-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 2.5rem;
  }
  
  .step:last-child {
    grid-column: 1 / -1;
    max-width: 50%;
    margin: 0 auto;
  }
}

/* Desktop: Three-column layout (≥1024px) */
@media (min-width: 1024px) {
  #hero {
    padding: var(--space-4xl) var(--space-xl);
  }
  
  #hero h1 {
    font-size: 3.5rem;
  }
  
  .hero-headline {
    font-size: var(--text-4xl);
  }
  
  .hero-subheadline {
    font-size: var(--text-2xl);
  }
  
  .cta-button {
    font-size: var(--text-xl);
    padding: var(--space-lg) var(--space-2xl);
  }
  
  #how-it-works {
    padding: var(--space-4xl) var(--space-xl);
  }
  
  #how-it-works h2 {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-2xl);
  }
  
  .steps-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-2xl);
  }
  
  .step:last-child {
    grid-column: auto;
    max-width: none;
  }
  
  .step-icon {
    font-size: 3.5rem;
  }
  
  .step h3 {
    font-size: var(--text-2xl);
  }
}

/* ============================================
   Features Section
   ============================================ */

#features {
  padding: var(--space-2xl) var(--space-lg);
  max-width: var(--container-xl);
  margin: 0 auto;
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(10px);
}

#features h2 {
  text-align: center;
  font-size: var(--text-3xl);
  margin-bottom: 2.5rem;
  color: var(--color-text-primary);
}

/* Mobile-first: Single column layout */
.features-grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

.features-grid li {
  background-color: var(--color-background);
  padding: var(--space-lg);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

.features-grid h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
}

.features-grid p {
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin: 0;
}

/* Tablet: Two-column layout (≥768px) */
@media (min-width: 768px) {
  #features {
    padding: var(--space-4xl) var(--space-xl);
  }
  
  .features-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
  }
}

/* Desktop: Three-column layout (≥1024px) */
@media (min-width: 1024px) {
  #features {
    padding: var(--space-4xl) var(--space-xl);
  }
  
  #features h2 {
    font-size: var(--text-4xl);
    margin-bottom: var(--space-2xl);
  }
  
  .features-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
  }
  
  .features-grid h3 {
    font-size: var(--text-2xl);
  }
}

/* ============================================
   Contact Section
   ============================================ */

#contact {
  padding: var(--space-2xl) var(--space-lg);
  max-width: var(--container-md);
  margin: 0 auto;
}

#contact h2 {
  text-align: center;
  font-size: var(--text-3xl);
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

.contact-intro {
  text-align: center;
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
}

.contact-container {
  max-width: 600px;
  margin: 0 auto;
}

.contact-form {
  background-color: var(--color-background);
  padding: var(--space-xl);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
}

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

.form-group label {
  display: block;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-text-primary);
  margin-bottom: var(--space-sm);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: var(--space-md);
  font-size: var(--text-base);
  color: var(--color-text-primary);
  background-color: var(--color-background);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  transition: border-color var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-link);
}

.form-group input[aria-invalid="true"],
.form-group textarea[aria-invalid="true"] {
  border-color: #dc3545;
}

.field-error {
  display: block;
  color: #dc3545;
  font-size: var(--text-sm);
  margin-top: var(--space-xs);
}

.form-success {
  display: none;
  background-color: #d4edda;
  color: #155724;
  padding: var(--space-md);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-lg);
  text-align: center;
  font-weight: 500;
}

.form-success[style*="display: block"],
.form-success:not(:empty) {
  display: block !important;
}

.form-error {
  display: none;
  background-color: #f8d7da;
  color: #721c24;
  padding: var(--space-md);
  border-radius: var(--radius-sm);
  margin-bottom: var(--space-lg);
  text-align: center;
  font-weight: 500;
}

.form-error:not(:empty) {
  display: block;
}

.contact-form button[type="submit"] {
  width: 100%;
  margin-top: var(--space-md);
}

.contact-form button[type="submit"]:disabled {
  opacity: 0.6;
  cursor: not-allowed;
}

/* Responsive contact section */
@media (min-width: 768px) {
  #contact {
    padding: var(--space-4xl) var(--space-xl);
  }
  
  #contact h2 {
    font-size: var(--text-4xl);
  }
  
  .contact-intro {
    font-size: var(--text-xl);
  }
  
  .contact-form {
    padding: var(--space-2xl);
  }
}

/* ============================================
   Support Section (Buy me a coffee)
   ============================================ */

.support-section-content {
  padding: var(--space-3xl) var(--space-lg);
  text-align: center;
  background: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(10px);
}

.support-container {
  max-width: var(--container-md);
  margin: 0 auto;
}

.support-text {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-lg);
  font-weight: 500;
}

.support-button {
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Responsive support section */
@media (min-width: 768px) {
  .support-section-content {
    padding: var(--space-4xl) var(--space-xl);
  }
  
  .support-text {
    font-size: var(--text-xl);
  }
}

/* ============================================
   Blog Preview Section
   ============================================ */

#blog-preview {
  padding: var(--space-2xl) var(--space-lg);
  max-width: var(--container-xl);
  margin: 0 auto;
}

#blog-preview h2 {
  text-align: center;
  font-size: var(--text-3xl);
  margin-bottom: 2.5rem;
  color: var(--color-text-primary);
}

/* Blog preview grid - mobile first */
.blog-preview-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

/* Blog preview CTA - link to full blog */
.blog-preview-cta {
  text-align: center;
  padding-top: var(--space-lg);
}

.blog-link {
  display: inline-block;
  font-size: var(--text-lg);
  font-weight: 600;
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.blog-link:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

/* ============================================
   Blog Listing Page
   ============================================ */

.blog-header {
  text-align: center;
  padding: var(--space-2xl) 0 var(--space-xl) 0;
}

.blog-header h1 {
  font-size: var(--text-3xl);
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

.blog-intro {
  font-size: var(--text-lg);
  color: var(--color-text-secondary);
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.6;
}

/* Blog grid layout - mobile first */
.blog-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  padding: var(--space-xl) 0;
}

/* Blog card styling */
.blog-card {
  background-color: var(--color-background);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: box-shadow var(--transition-base), transform var(--transition-fast);
}

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

.blog-card h2 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-sm);
  line-height: 1.3;
}

.blog-card h2 a {
  color: var(--color-text-primary);
  text-decoration: none;
}

.blog-card h2 a:hover {
  color: var(--color-link);
  text-decoration: underline;
}

.blog-card h3 {
  font-size: var(--text-xl);
  margin-bottom: var(--space-sm);
  line-height: 1.3;
}

.blog-card h3 a {
  color: var(--color-text-primary);
  text-decoration: none;
}

.blog-card h3 a:hover {
  color: var(--color-link);
  text-decoration: underline;
}

.blog-meta {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.blog-meta time {
  font-style: normal;
}

.blog-excerpt {
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-md);
}

.read-more {
  display: inline-block;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.read-more:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

/* Empty state */
.blog-empty {
  text-align: center;
  padding: var(--space-3xl) var(--space-lg);
  color: var(--color-text-muted);
}

.blog-empty p {
  font-size: var(--text-lg);
  margin: 0;
}

/* Navigation styling */
.nav-logo {
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--color-text-primary);
  text-decoration: none;
}

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

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

.nav-links a {
  font-size: var(--text-base);
  color: var(--color-text-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.nav-links a:hover {
  color: var(--color-link);
}

.nav-links a[aria-current="page"] {
  font-weight: 600;
  color: var(--color-link);
}

/* Mobile navigation fixes */
@media (max-width: 767px) {
  nav {
    flex-wrap: wrap;
    gap: var(--space-sm);
  }
  
  .nav-links {
    flex-wrap: wrap;
    gap: var(--space-sm);
    justify-content: flex-end;
  }
  
  .nav-links a {
    font-size: var(--text-sm);
    padding: var(--space-xs) var(--space-sm);
  }
}

.cta-button-small {
  padding: var(--space-sm) var(--space-md);
  font-size: var(--text-base);
  font-weight: 600;
  color: #ffffff !important;
  background-color: var(--color-cta-bg);
  border-radius: var(--radius-md);
  text-decoration: none;
  transition: background-color var(--transition-base);
}

.cta-button-small:hover {
  background-color: var(--color-cta-hover);
  text-decoration: none;
  color: #ffffff !important;
}

.cta-button-small:focus {
  outline: 3px solid #0066cc;
  outline-offset: 2px;
  background-color: var(--color-cta-hover);
  color: #ffffff !important;
}

/* Footer navigation list styling */
.footer-nav h3 {
  font-size: var(--text-lg);
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

.footer-nav ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md) var(--space-lg);
  justify-content: center;
}

.footer-nav li {
  margin-bottom: 0;
}

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

.footer-nav a:hover {
  color: var(--color-link);
  text-decoration: underline;
}

.footer-nav-left {
  text-align: center;
}

.footer-nav-right {
  text-align: center;
}

/* Desktop footer layout */
@media (min-width: 768px) {
  .footer-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-2xl);
    align-items: start;
  }
  
  .footer-nav-left {
    text-align: left;
  }
  
  .footer-nav-left ul {
    justify-content: flex-start;
  }
  
  .footer-nav-right {
    text-align: right;
  }
  
  .footer-nav-right ul {
    justify-content: flex-end;
  }
  
  .footer-legal {
    grid-column: 1 / -1;
  }
}

/* ============================================
   Blog Post Page
   ============================================ */

.blog-post {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--space-2xl) 0;
}

.blog-post-header {
  margin-bottom: var(--space-2xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-border);
}

.blog-post-header h1 {
  font-size: var(--text-3xl);
  line-height: 1.2;
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

.blog-post-header .blog-meta {
  font-size: var(--text-base);
  color: var(--color-text-muted);
  margin: 0;
}

.blog-author {
  margin-left: var(--space-sm);
}

/* Blog post content styling */
.blog-post-content {
  font-size: var(--text-lg);
  line-height: 1.7;
  color: var(--color-text-primary);
}

.blog-lead {
  font-size: var(--text-xl);
  line-height: 1.6;
  color: var(--color-text-secondary);
  margin-bottom: var(--space-xl);
  font-weight: 500;
}

.blog-post-content h2 {
  font-size: var(--text-2xl);
  margin-top: var(--space-2xl);
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
  font-weight: 600;
}

.blog-post-content h3 {
  font-size: var(--text-xl);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-sm);
  color: var(--color-text-primary);
  font-weight: 600;
}

.blog-post-content p {
  margin-bottom: var(--space-lg);
}

.blog-post-content ul,
.blog-post-content ol {
  margin-bottom: var(--space-lg);
  padding-left: var(--space-xl);
}

.blog-post-content li {
  margin-bottom: var(--space-sm);
  line-height: 1.7;
}

.blog-post-content strong {
  font-weight: 600;
  color: var(--color-text-primary);
}

.blog-post-content a {
  color: var(--color-link);
  text-decoration: underline;
}

.blog-post-content a:hover {
  color: var(--color-link-hover);
}

/* Blog post footer */
.blog-post-footer {
  margin-top: var(--space-3xl);
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.back-to-blog {
  display: inline-block;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-link);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.back-to-blog:hover {
  color: var(--color-link-hover);
  text-decoration: underline;
}

/* Responsive blog post styles */
@media (min-width: 768px) {
  .blog-post {
    padding: var(--space-3xl) 0;
  }
  
  .blog-post-header h1 {
    font-size: var(--text-4xl);
  }
  
  .blog-lead {
    font-size: var(--text-2xl);
  }
  
  .blog-post-content {
    font-size: var(--text-lg);
  }
  
  .blog-post-content h2 {
    font-size: var(--text-3xl);
  }
  
  .blog-post-content h3 {
    font-size: var(--text-2xl);
  }
}

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

footer {
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.7) 0%, rgba(245, 247, 250, 0.8) 100%);
  backdrop-filter: blur(10px);
  border-top: 1px solid var(--color-border);
  padding: var(--space-2xl) var(--space-lg);
  margin-top: var(--space-4xl);
}

.footer-nav {
  display: none !important;
}

.footer-legal {
  display: block !important;
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-top: var(--space-lg);
  border-top: none;
}

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

.footer-nav {
  margin-bottom: var(--space-xl);
  text-align: center;
}

.footer-legal {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-border);
}

/* Future feature placeholders */
[data-future-feature] {
  /* Placeholder sections for future features */
  /* Will be styled when features are implemented */
}

/* ============================================
   Responsive Enhancements - Tablet (≥768px)
   ============================================ */

@media (min-width: 768px) {
  #blog-preview {
    padding: var(--space-4xl) var(--space-xl);
  }
  
  .blog-preview-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
  }
  
  footer {
    padding: var(--space-3xl) var(--space-xl);
  }
  
  /* Blog listing page - tablet */
  .blog-header h1 {
    font-size: var(--text-4xl);
  }
  
  .blog-intro {
    font-size: var(--text-xl);
  }
  
  .blog-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-xl);
  }
  
  .blog-card h2 {
    font-size: var(--text-2xl);
  }
  
  .blog-card h3 {
    font-size: var(--text-2xl);
  }
  
  /* Empty state spans full width */
  .blog-empty {
    grid-column: 1 / -1;
  }
}

/* ============================================
   Responsive Enhancements - Desktop (≥1024px)
   ============================================ */

@media (min-width: 1024px) {
  #blog-preview h2 {
    font-size: var(--text-4xl);
  }
  
  .blog-preview-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
  }
  
  .footer-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-2xl);
  }
  
  .footer-legal {
    grid-column: 1 / -1;
  }
  
  /* Blog listing page - desktop */
  .blog-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 2.5rem;
  }
  
  .blog-card h2 {
    font-size: var(--text-2xl);
  }
  
  .blog-card h3 {
    font-size: var(--text-2xl);
  }
}