/* ==========================================================================
   Static Blog - Typography-First Design
   Editorial aesthetic with refined minimalism
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:ital,wght@0,400;0,500;0,600;0,700;1,400;1,500&family=Source+Serif+4:ital,opsz,wght@0,8..60,400;0,8..60,500;0,8..60,600;1,8..60,400;1,8..60,500&display=swap');

/* --------------------------------------------------------------------------
   Design Tokens
   -------------------------------------------------------------------------- */
:root {
  /* Typography */
  --font-display: 'Cormorant Garamond', Georgia, serif;
  --font-body: 'Source Serif 4', Georgia, serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;

  /* Font Sizes - Modular Scale (1.333 - Perfect Fourth) */
  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1.125rem;
  --text-lg: 1.25rem;
  --text-xl: 1.5rem;
  --text-2xl: 2rem;
  --text-3xl: 2.667rem;
  --text-4xl: 3.556rem;
  --text-5xl: 4.741rem;

  /* Colors - Warm Ink & Paper */
  --color-ink: #1a1815;
  --color-ink-light: #4a4540;
  --color-ink-muted: #7a756d;
  --color-paper: #faf8f5;
  --color-paper-dark: #f0ece6;
  --color-accent: #8b4513;
  --color-accent-hover: #a0522d;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;

  /* Layout */
  --max-width: 42rem;
  --line-height: 1.75;
  --letter-spacing-tight: -0.02em;
  --letter-spacing-wide: 0.15em;
}

/* --------------------------------------------------------------------------
   Base Reset & Typography
   -------------------------------------------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-size: 16px;
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--line-height);
  color: var(--color-ink);
  background-color: var(--color-paper);
  min-height: 100vh;
}

/* Subtle paper texture */
body::before {
  content: '';
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%' height='100%' filter='url(%23noise)'/%3E%3C/svg%3E");
  opacity: 0.02;
  pointer-events: none;
  z-index: -1;
}

/* --------------------------------------------------------------------------
   Typography Hierarchy
   -------------------------------------------------------------------------- */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-display);
  font-weight: 500;
  letter-spacing: var(--letter-spacing-tight);
  line-height: 1.2;
  color: var(--color-ink);
}

h1 {
  font-size: var(--text-4xl);
  font-weight: 400;
  margin-bottom: var(--space-md);
}

h2 {
  font-size: var(--text-2xl);
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

h3 {
  font-size: var(--text-xl);
  margin-top: var(--space-lg);
  margin-bottom: var(--space-sm);
}

p {
  margin-bottom: var(--space-md);
  text-align: justify;
  hyphens: auto;
}

/* Lead paragraph */
p.lead,
.lead {
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--color-ink-light);
  text-align: left;
  margin-bottom: var(--space-lg);
}

/* --------------------------------------------------------------------------
   Links
   -------------------------------------------------------------------------- */
a {
  color: var(--color-accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s ease, color 0.3s ease;
}

a:hover {
  color: var(--color-accent-hover);
  border-bottom-color: var(--color-accent-hover);
}

/* --------------------------------------------------------------------------
   Blockquotes
   -------------------------------------------------------------------------- */
blockquote {
  margin: var(--space-lg) 0;
  padding: var(--space-md) var(--space-lg);
  border-left: 3px solid var(--color-ink);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-style: italic;
  color: var(--color-ink-light);
  background: linear-gradient(90deg, var(--color-paper-dark) 0%, transparent 100%);
}

blockquote cite {
  display: block;
  margin-top: var(--space-sm);
  font-size: var(--text-sm);
  font-style: normal;
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  color: var(--color-ink-muted);
}

/* --------------------------------------------------------------------------
   Code
   -------------------------------------------------------------------------- */
code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  padding: 0.1em 0.4em;
  background: var(--color-paper-dark);
  border-radius: 3px;
}

pre {
  margin: var(--space-lg) 0;
  padding: var(--space-md);
  background: var(--color-ink);
  color: var(--color-paper);
  border-radius: 4px;
  overflow-x: auto;
}

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

/* --------------------------------------------------------------------------
   Lists
   -------------------------------------------------------------------------- */
ul,
ol {
  margin: var(--space-md) 0;
  padding-left: var(--space-lg);
}

li {
  margin-bottom: var(--space-xs);
}

li::marker {
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   Horizontal Rule
   -------------------------------------------------------------------------- */
hr {
  border: none;
  margin: var(--space-xl) auto;
  width: 30%;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-ink-muted), transparent);
}

/* --------------------------------------------------------------------------
   Images
   -------------------------------------------------------------------------- */
img {
  max-width: 100%;
  height: auto;
  display: block;
  margin: var(--space-lg) auto;
}

figure {
  margin: var(--space-xl) 0;
}

figcaption {
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
  font-style: italic;
  margin-top: var(--space-sm);
}

/* --------------------------------------------------------------------------
   Layout - Container
   -------------------------------------------------------------------------- */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: var(--space-md) var(--space-md) var(--space-xl);
}

/* --------------------------------------------------------------------------
   Header
   -------------------------------------------------------------------------- */
.site-header {
  padding: var(--space-lg) var(--space-md) var(--space-md);
  text-align: center;
  border-bottom: 1px solid var(--color-paper-dark);
}

.site-title {
  font-family: var(--font-display);
  font-size: var(--text-3xl);
  font-weight: 400;
  letter-spacing: var(--letter-spacing-tight);
  margin-bottom: 0;
}

.site-title a {
  color: inherit;
  border: none;
}

.site-title a:hover {
  color: var(--color-accent);
}

.site-tagline {
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  color: var(--color-ink-muted);
  margin: 0;
}

/* --------------------------------------------------------------------------
   Post List (Homepage)
   -------------------------------------------------------------------------- */
.post-list {
  list-style: none;
  padding: 0;
  margin: var(--space-lg) 0;
}

.post-item {
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-paper-dark);
  animation: fadeInUp 0.6s ease forwards;
  opacity: 0;
}

.post-item:last-child {
  border-bottom: none;
}

.post-item:nth-child(1) {
  animation-delay: 0.1s;
}

.post-item:nth-child(2) {
  animation-delay: 0.2s;
}

.post-item:nth-child(3) {
  animation-delay: 0.3s;
}

.post-item:nth-child(4) {
  animation-delay: 0.4s;
}

.post-item:nth-child(5) {
  animation-delay: 0.5s;
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.post-date {
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  color: var(--color-ink-muted);
  white-space: nowrap;
}

.post-title {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 500;
  margin-bottom: var(--space-xs);
  line-height: 1.3;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: var(--space-sm);
}

.post-title a {
  color: inherit;
  border: none;
  transition: color 0.3s ease;
}

.post-title a:hover {
  color: var(--color-accent);
}

.post-excerpt {
  color: var(--color-ink-light);
  margin: 0;
  font-size: var(--text-base);
}

.read-more {
  display: inline-block;
  margin-top: var(--space-sm);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
}

/* --------------------------------------------------------------------------
   Article Page
   -------------------------------------------------------------------------- */
.article-header {
  text-align: center;
  margin-bottom: var(--space-xl);
  padding-bottom: var(--space-lg);
  border-bottom: 1px solid var(--color-paper-dark);
}

.article-date {
  display: block;
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  color: var(--color-ink-muted);
  margin-bottom: var(--space-sm);
}

.article-title {
  font-size: var(--text-4xl);
  margin-bottom: var(--space-md);
}

.article-subtitle {
  font-size: var(--text-lg);
  font-style: italic;
  color: var(--color-ink-light);
  margin: 0;
}

.article-content {
  margin-bottom: var(--space-2xl);
}

/* Drop cap for first paragraph */
.article-content>p:first-of-type::first-letter {
  float: left;
  font-family: var(--font-display);
  font-size: var(--text-5xl);
  line-height: 0.8;
  padding-right: var(--space-sm);
  padding-top: 0.1em;
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   Navigation
   -------------------------------------------------------------------------- */
.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--text-sm);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wide);
  margin-bottom: var(--space-lg);
}

.back-link::before {
  content: '←';
  transition: transform 0.3s ease;
}

.back-link:hover::before {
  transform: translateX(-4px);
}

/* --------------------------------------------------------------------------
   Footer
   -------------------------------------------------------------------------- */
.site-footer {
  text-align: center;
  padding: var(--space-xl) var(--space-md);
  border-top: 1px solid var(--color-paper-dark);
  font-size: var(--text-sm);
  color: var(--color-ink-muted);
}

/* --------------------------------------------------------------------------
   Empty State
   -------------------------------------------------------------------------- */
.empty-state {
  text-align: center;
  padding: var(--space-2xl) var(--space-md);
  color: var(--color-ink-muted);
}

.empty-state p {
  text-align: center;
}

/* --------------------------------------------------------------------------
   Loading State
   -------------------------------------------------------------------------- */
.loading {
  text-align: center;
  padding: var(--space-xl);
  color: var(--color-ink-muted);
  font-style: italic;
}

/* --------------------------------------------------------------------------
   Responsive Adjustments
   -------------------------------------------------------------------------- */
@media (max-width: 768px) {
  :root {
    --text-4xl: 2.5rem;
    --text-3xl: 2rem;
    --text-2xl: 1.5rem;
  }

  .container {
    padding: var(--space-lg) var(--space-md);
  }

  .site-header {
    padding: var(--space-lg) var(--space-md);
  }

  p {
    text-align: left;
    hyphens: none;
  }

  .article-content>p:first-of-type::first-letter {
    font-size: var(--text-4xl);
  }
}

/* --------------------------------------------------------------------------
   Print Styles
   -------------------------------------------------------------------------- */
@media print {
  body::before {
    display: none;
  }

  .back-link,
  .site-footer {
    display: none;
  }

  .article-content>p:first-of-type::first-letter {
    float: none;
    font-size: inherit;
    padding: 0;
  }
}