/* ════════════════════════════════════════════════════════════
   revamp.css — happyapps blog
   Fonts: Libre Baskerville (display) · Lora (body) · DM Mono (mono)
   ════════════════════════════════════════════════════════════ */

:root {
  --display: 'Libre Baskerville', Georgia, serif;
  --serif:   'Lora', Georgia, serif;
  --mono:    'DM Mono', 'Courier New', monospace;

  --bg:           #f8f7f5;
  --surface:      #ffffff;
  --ink:          #1a1814;
  --ink-mid:      #3d3a35;
  --ink-light:    #6b6760;
  --accent:       #2d4a7a;
  --accent-light: #e8edf5;
  --rule:         #dedad4;
  --code-bg:      #f0efe9;

  --text-xs:   0.68rem;
  --text-sm:   0.82rem;
  --text-base: 1.05rem;
  --text-lg:   1.2rem;
  --text-xl:   1.5rem;
  --text-2xl:  2rem;
  --text-4xl:  3.8rem;

  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.75rem;
  --space-lg: 3rem;
  --space-xl: 5rem;

  --hero-w: 860px;
  --body-w: 680px;
  --gutter: 2rem;

  --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

/* ── RESET ── */
*, *::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 { background: var(--bg); color: var(--ink); font-family: var(--serif); font-size: var(--text-base); line-height: 1.75; min-height: 100vh; }
a { color: var(--accent); text-decoration: underline; text-decoration-color: transparent; text-underline-offset: 3px; transition: text-decoration-color 0.2s var(--ease), color 0.2s var(--ease); }
a:hover { text-decoration-color: var(--accent); }
img { max-width: 100%; display: block; }
main { display: block; }

/* ════════ SITE HEADER ════════ */
.site-header {
  position: sticky; top: 0; z-index: 100;
  background: rgba(248,247,245,0.92);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--rule);
}
.site-nav {
  max-width: var(--hero-w); margin: 0 auto;
  padding: 0 var(--gutter); height: 56px;
  display: flex; align-items: center; justify-content: space-between;
}
.site-logo {
  font-family: var(--mono); font-size: var(--text-sm);
  font-weight: 500; letter-spacing: 0.18em; text-transform: lowercase;
  color: var(--ink); text-decoration: none;
  transition: color 0.2s var(--ease);
}
.site-logo:hover { color: var(--accent); text-decoration-color: transparent; }
.nav-links { display: flex; gap: 1.75rem; align-items: center; }
.nav-links a {
  font-family: var(--mono); font-size: var(--text-xs);
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-light); text-decoration: none;
  transition: color 0.2s var(--ease);
}
.nav-links a:hover { color: var(--accent); }

/* ════════ HOME: HERO ════════ */
.home-hero {
  background: var(--surface);
  border-bottom: 1px solid var(--rule);
  padding: 5rem var(--gutter) 4rem;
}
.home-hero-inner {
  max-width: var(--hero-w); margin: 0 auto;
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 4rem; align-items: center;
}
.hero-label {
  font-family: var(--mono); font-size: 0.68rem;
  letter-spacing: 0.22em; text-transform: uppercase;
  color: var(--accent);
  display: flex; align-items: center; gap: 0.75rem;
  margin-bottom: 1.5rem;
}
.hero-label::after { content: ''; flex: 1; height: 1px; background: var(--accent); opacity: 0.35; }
.hero-copy h1 {
  font-family: var(--display); font-weight: 700;
  font-size: clamp(2rem, 4vw, 2.2rem);
  line-height: 1.1; letter-spacing: -0.025em;
  color: var(--ink); margin-bottom: 1.25rem;
}
.hero-copy h1 em { font-style: italic; color: var(--accent); }
.hero-deck {
  font-family: var(--serif); font-size: 1.05rem;
  font-style: italic; line-height: 1.7;
  color: var(--ink-mid); margin-bottom: 2rem;
}
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.btn {
  font-family: var(--mono); font-size: 0.7rem;
  letter-spacing: 0.12em; text-transform: uppercase;
  padding: 0.65em 1.4em; border-radius: 2px;
  transition: all 0.2s var(--ease);
  display: inline-block; text-decoration: none;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--ink); text-decoration-color: transparent; }
.btn-secondary { background: transparent; color: var(--accent); border: 1px solid var(--accent); }
.btn-secondary:hover { background: var(--accent-light); text-decoration-color: transparent; }

.hero-feature {
  background: var(--bg); border: 1px solid var(--rule);
  border-radius: 4px; padding: 2rem;
  position: relative; overflow: hidden;
}
.hero-feature::before {
  content: 'Featured'; font-family: var(--mono);
  font-size: 0.62rem; letter-spacing: 0.18em; text-transform: uppercase;
  color: #fff; background: var(--accent);
  padding: 0.25em 0.75em;
  position: absolute; top: 0; left: 0;
}
.hero-feature-tag {
  font-family: var(--mono); font-size: 0.65rem;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--ink-light); margin: 1.5rem 0 0.75rem;
}
.hero-feature h2 {
  font-family: var(--display); font-size: 1.2rem;
  font-weight: 700; line-height: 1.3;
  color: var(--ink); margin-bottom: 0.75rem;
}
.hero-feature p {
  font-family: var(--serif); font-size: 0.88rem;
  line-height: 1.65; color: var(--ink-mid);
  display: -webkit-box; -webkit-line-clamp: 4;
  -webkit-box-orient: vertical; overflow: hidden;
  margin-bottom: 1.25rem;
}
.read-link {
  font-family: var(--mono); font-size: 0.68rem;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--accent); text-decoration: none;
  display: inline-flex; align-items: center; gap: 0.4em;
  transition: gap 0.2s var(--ease);
}
.read-link:hover { gap: 0.7em; }
.read-link::after { content: '→'; }

/* ════════ HOME: TOPICS BAR ════════ */
.topics-bar { background: var(--accent); padding: 0.6rem var(--gutter); }
.topics-inner {
  max-width: var(--hero-w); margin: 0 auto;
  display: flex; align-items: center; gap: 1.25rem;
  overflow-x: auto; scrollbar-width: none;
}
.topics-inner::-webkit-scrollbar { display: none; }
.topic-label {
  font-family: var(--mono); font-size: 0.62rem;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: rgba(255,255,255,0.55); white-space: nowrap; flex-shrink: 0;
}
.topic-chip {
  font-family: var(--mono); font-size: 0.65rem;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: rgba(255,255,255,0.85);
  border: 1px solid rgba(255,255,255,0.25);
  padding: 0.25em 0.85em; border-radius: 2px;
  white-space: nowrap; flex-shrink: 0;
  text-decoration: none;
  transition: all 0.2s var(--ease);
}
.topic-chip:hover { background: rgba(255,255,255,0.12); color: #fff; border-color: rgba(255,255,255,0.5); }

/* ════════ POST LIST (home + archive) ════════ */
.posts-section {
  max-width: var(--body-w); margin: 0 auto;
  padding: 3.5rem var(--gutter) 5rem;
}
.section-head {
  display: flex; align-items: baseline; justify-content: space-between;
  padding-bottom: 1rem; border-bottom: 1px solid var(--rule);
  margin-bottom: 2.5rem;
}
.section-title {
  font-family: var(--mono); font-size: 0.68rem;
  letter-spacing: 0.2em; text-transform: uppercase;
  color: var(--ink-light);
}
.section-more {
  font-family: var(--mono); font-size: 0.65rem;
  letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--accent); text-decoration: none;
  display: inline-flex; align-items: center; gap: 0.35em;
  transition: gap 0.2s var(--ease);
}
.section-more:hover { gap: 0.6em; }
.section-more::after { content: '→'; }

.post-list { display: flex; flex-direction: column; }
.post-item {
  display: grid; grid-template-columns: 5rem 1fr;
  gap: 0 1.75rem;
  padding: 1.75rem 1rem;
  border-bottom: 1px solid var(--rule);
  margin: 0 -1rem;
  border-radius: 3px;
  text-decoration: none;
  transition: background 0.15s var(--ease);
}
.post-item:hover { background: var(--surface); }
.post-item:hover .post-title { color: var(--accent); }

.post-meta-col { display: flex; flex-direction: column; align-items: flex-start; padding-top: 0.2rem; }
.post-date { font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.08em; color: var(--ink-light); line-height: 1.5; }
.post-readtime { font-family: var(--mono); font-size: 0.6rem; color: var(--ink-light); opacity: 0.6; margin-top: 0.2rem; }
.post-tag {
  margin-top: 0.6rem; font-family: var(--mono);
  font-size: 0.58rem; letter-spacing: 0.12em; text-transform: uppercase;
  color: var(--accent); background: var(--accent-light);
  padding: 0.15em 0.5em; border-radius: 2px; display: inline-block;
}

.post-body-col { display: flex; flex-direction: column; }
.post-title {
  font-family: var(--display); font-weight: 700;
  font-size: 1.05rem; line-height: 1.3;
  color: var(--ink); margin-bottom: 0.5rem;
  transition: color 0.15s var(--ease);
}
.post-excerpt {
  font-family: var(--serif); font-size: 0.88rem;
  line-height: 1.65; color: var(--ink-light);
  display: -webkit-box; -webkit-line-clamp: 2;
  -webkit-box-orient: vertical; overflow: hidden;
}

/* ── Pagination ── */
.pagination-bar {
  display: flex; justify-content: center; gap: 0.75rem;
  padding: 2rem var(--gutter) 0;
  border-top: 1px solid var(--rule);
  max-width: var(--body-w); margin: 0 auto;
}
.pagination-bar a {
  font-family: var(--mono); font-size: 0.68rem;
  letter-spacing: 0.1em; text-transform: uppercase;
  color: var(--ink-light); text-decoration: none;
  padding: 0.4em 0.8em; border: 1px solid var(--rule);
  border-radius: 2px; transition: all 0.15s var(--ease);
}
.pagination-bar a:hover { border-color: var(--accent); color: var(--accent); }
.pagination-bar a.current-page { background: var(--accent); color: #fff; border-color: var(--accent); }

/* ════════ HOME: ABOUT STRIP ════════ */
.about-strip { background: var(--surface); border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule); }
.about-inner {
  max-width: var(--body-w); margin: 0 auto;
  padding: 3rem var(--gutter);
  display: grid; grid-template-columns: auto 1fr;
  gap: 2.5rem; align-items: center;
}
.about-avatar { width: 80px; height: 80px; border-radius: 50%; object-fit: cover; border: 2px solid var(--rule); }
.about-name { font-family: var(--display); font-size: 1rem; font-weight: 700; color: var(--ink); margin-bottom: 0.35rem; }
.about-bio { font-family: var(--serif); font-size: 0.88rem; font-style: italic; line-height: 1.65; color: var(--ink-mid); margin-bottom: 0.75rem; }
.about-links { display: flex; gap: 1.25rem; }
.about-links a { font-family: var(--mono); font-size: 0.65rem; letter-spacing: 0.1em; text-transform: uppercase; color: var(--ink-light); text-decoration: none; transition: color 0.2s var(--ease); }
.about-links a:hover { color: var(--accent); }

/* ════════ ARTICLE HERO ════════ */
.article-hero {
  background: var(--surface);
  border-bottom: 1px solid var(--rule);
  padding: var(--space-xl) 0 var(--space-lg);
}
.article-hero .hero-inner {
  max-width: var(--hero-w); margin: 0 auto; padding: 0 var(--gutter);
}
.kicker { display: flex; align-items: center; gap: var(--space-sm); margin-bottom: var(--space-md); flex-wrap: wrap; }
.kicker-tag {
  font-family: var(--mono); font-size: var(--text-xs);
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--accent); background: var(--accent-light);
  padding: 0.2em 0.7em; border-radius: 2px;
}
.kicker-date { font-family: var(--mono); font-size: var(--text-xs); letter-spacing: 0.1em; color: var(--ink-light); }

.article-hero h1 {
  font-family: var(--display);
  font-size: clamp(1.8rem, 3.5vw, 2.6rem);
  font-weight: 700; line-height: 1.1; letter-spacing: -0.025em;
  color: var(--ink); margin-bottom: var(--space-md);
  text-wrap: balance;
}
.article-hero h1 em { font-style: italic; color: var(--accent); }

.deck {
  font-family: var(--serif); font-size: var(--text-lg);
  font-style: italic; line-height: 1.6;
  color: var(--ink-mid); margin-bottom: var(--space-md);
}
.byline-block {
  display: flex; align-items: center; justify-content: space-between;
  padding: var(--space-sm) 0; border-top: 1px solid var(--rule); gap: var(--space-sm);
}
.byline-meta { display: flex; flex-direction: column; gap: 0.15rem; }
.byline-name { font-family: var(--display); font-size: var(--text-sm); font-weight: 700; color: var(--ink); letter-spacing: 0.02em; }
.byline-role { font-family: var(--mono); font-size: var(--text-xs); color: var(--ink-light); letter-spacing: 0.08em; }
.byline-reading { font-family: var(--mono); font-size: var(--text-xs); color: var(--ink-light); letter-spacing: 0.08em; white-space: nowrap; }

/* ════════ ARTICLE BODY ════════ */
.article-body {
  max-width: var(--body-w); margin: 0 auto;
  padding: var(--space-xl) var(--gutter) var(--space-xl);
}
.article-body p { margin-bottom: var(--space-md); color: var(--ink-mid); }
.article-body p:last-child { margin-bottom: 0; }
.article-body p.lead { font-size: var(--text-lg); line-height: 1.7; }

.article-body h1 { display: none; }

.article-body h2 {
  font-family: var(--display); font-size: var(--text-xl); font-weight: 700;
  line-height: 1.25; color: var(--ink);
  margin: var(--space-xl) 0 var(--space-sm);
  padding-left: 1.1rem; position: relative;
}
.article-body h2::before {
  content: ''; position: absolute; left: 0; top: 0.12em; bottom: 0.12em;
  width: 3px; background: var(--accent); border-radius: 2px;
}
.article-body h3 {
  font-family: var(--display); font-size: var(--text-base);
  font-style: italic; font-weight: 400; line-height: 1.4;
  color: var(--ink); margin: var(--space-lg) 0 var(--space-xs);
}
.article-body h4 {
  font-family: var(--mono); font-size: var(--text-xs); font-weight: 500;
  letter-spacing: 0.18em; text-transform: uppercase;
  color: var(--ink-light); margin-bottom: var(--space-sm);
}
.article-body strong { font-weight: 700; color: var(--ink); }
.article-body ul, .article-body ol { padding-left: 1.5rem; margin-bottom: var(--space-md); color: var(--ink-mid); }
.article-body li { margin-bottom: 0.4rem; }
.article-body hr { border: none; border-top: 1px solid var(--rule); margin: var(--space-xl) 0; }

.article-body a { color: var(--accent); text-decoration-color: var(--accent); }
.article-body a:hover { opacity: 0.75; }

sup a {
  font-family: var(--mono); font-size: 0.65rem; font-weight: 500;
  color: var(--accent); text-decoration: none;
  vertical-align: super; line-height: 0; padding: 0 0.1em;
  transition: opacity 0.15s;
}
sup a:hover { opacity: 0.65; }

code {
  font-family: var(--mono); font-size: 0.85em;
  background: var(--code-bg); color: var(--accent);
  padding: 0.1em 0.4em; border-radius: 3px; border: 1px solid var(--rule);
}
pre {
  background: var(--ink); color: #e8e6e0;
  font-family: var(--mono); font-size: var(--text-sm); line-height: 1.65;
  padding: var(--space-md); border-radius: 4px;
  overflow-x: auto; margin: var(--space-lg) 0;
}
pre code { background: none; color: inherit; border: none; padding: 0; font-size: inherit; border-radius: 0; }

blockquote.pull-quote {
  margin: var(--space-xl) 0;
  padding: var(--space-md) var(--space-md) var(--space-md) var(--space-lg);
  border-left: 4px solid var(--accent);
  background: var(--accent-light); border-radius: 0 4px 4px 0; position: relative;
}
blockquote.pull-quote::before {
  content: '\201C'; font-family: var(--display); font-size: 4rem; line-height: 1;
  color: var(--accent); opacity: 0.25;
  position: absolute; top: -0.2rem; left: 0.5rem; pointer-events: none;
}
blockquote.pull-quote p {
  font-family: var(--display); font-style: italic; font-size: var(--text-lg);
  line-height: 1.55; color: var(--ink); margin: 0;
}

/* plain blockquote (from Markdown >) */
.article-body blockquote:not(.pull-quote) {
  border-left: 3px solid var(--rule);
  padding-left: var(--space-md);
  color: var(--ink-light);
  font-style: italic;
  margin: var(--space-lg) 0;
}

aside.callout {
  background: var(--surface); border: 1px solid var(--rule);
  border-top: 3px solid var(--accent); border-radius: 0 0 4px 4px;
  padding: var(--space-md); margin: var(--space-lg) 0;
}
.callout-label {
  font-family: var(--mono); font-size: var(--text-xs); letter-spacing: 0.18em;
  text-transform: uppercase; color: var(--accent); font-weight: 500;
  margin-bottom: var(--space-xs) !important;
}
aside.callout p:last-child { margin-bottom: 0; color: var(--ink-mid); font-size: var(--text-sm); line-height: 1.7; }

.footnotes { margin-top: var(--space-xl); padding-top: var(--space-md); border-top: 1px solid var(--rule); }
.footnotes ol { padding-left: 1.5rem; }
.footnotes li { font-family: var(--serif); font-size: var(--text-sm); line-height: 1.65; color: var(--ink-light); margin-bottom: var(--space-xs); }
.fn-back { font-family: var(--mono); font-size: var(--text-xs); margin-left: 0.4em; color: var(--accent); text-decoration: none; vertical-align: middle; }
.fn-back:hover { text-decoration: underline; }

/* ════════ SITE FOOTER ════════ */
.site-footer {
  border-top: 1px solid var(--rule); padding: var(--space-lg) var(--gutter);
  text-align: center; background: var(--surface);
}
.site-footer p { font-family: var(--mono); font-size: var(--text-xs); color: var(--ink-light); letter-spacing: 0.08em; margin-bottom: var(--space-xs); }
.site-footer a { color: var(--ink-light); text-decoration: none; }
.site-footer a:hover { color: var(--accent); }
.footer-copy { opacity: 0.6; }

/* ════════ RESPONSIVE ════════ */
@media (max-width: 720px) {
  :root { --gutter: 1.25rem; --space-xl: 3rem; --space-lg: 2rem; }
  .home-hero-inner { grid-template-columns: 1fr; gap: 2.5rem; }
  .about-inner { grid-template-columns: 1fr; text-align: center; }
  .about-avatar { margin: 0 auto; }
  .about-links { justify-content: center; }
  .post-item { grid-template-columns: 4.5rem 1fr; gap: 0 1rem; }
  .article-hero { padding: var(--space-lg) 0 var(--space-md); }
  .byline-block { flex-direction: column; align-items: flex-start; gap: var(--space-xs); }
  blockquote.pull-quote::before { display: none; }
}
@media (max-width: 480px) {
  :root { --gutter: 1rem; }
  .hero-copy h1 { font-size: 1.9rem; }
  .article-hero h1 { letter-spacing: -0.015em; }
  .post-item { grid-template-columns: 1fr; }
  .post-meta-col { flex-direction: row; gap: 0.75rem; align-items: center; margin-bottom: 0.5rem; }
  .post-tag { margin-top: 0; }
  pre { font-size: 0.75rem; padding: var(--space-sm); margin-left: calc(-1 * var(--gutter)); margin-right: calc(-1 * var(--gutter)); border-radius: 0; }
}

@media print {
  .site-header, .site-footer { display: none; }
  body { font-size: 11pt; background: white; color: black; }
  a { color: black; text-decoration: underline; }
  .article-body h2::before { background: black; }
  blockquote.pull-quote { border-color: black; background: none; }
  pre { background: #f0f0f0; color: black; }
}