/* ============================================
   jpcodelab/journal — Main Stylesheet
   Aesthetic: Editorial minimalism
   Fonts: DM Serif Display + DM Sans
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=DM+Serif+Display:ital@0;1&family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;1,9..40,300&display=swap');

/* ── Variables ── */
:root {
  --bg: #F7F5F0;
  --surface: #FFFFFF;
  --ink: #1A1916;
  --ink-muted: #6B6860;
  --ink-faint: #B8B5AF;
  --border: #E8E5DF;
  --border-strong: #C8C5BF;

  --cat-personal: #C17B5C;
  --cat-personal-bg: #FDF3EE;
  --cat-reflection: #5C7BC1;
  --cat-reflection-bg: #EEF2FD;
  --cat-professional: #5C9C7B;
  --cat-professional-bg: #EEF7F3;
  --cat-archive: #8A8A8A;
  --cat-archive-bg: #F2F2F2;

  --font-display: 'DM Serif Display', Georgia, serif;
  --font-body: 'DM Sans', system-ui, sans-serif;

  --max-w: 720px;
  --max-w-wide: 1080px;

  --radius: 4px;
  --transition: 0.2s ease;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; scroll-behavior: smooth; }
body {
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-body);
  font-weight: 300;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ── Layout ── */
.container {
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 0 2rem;
}
.container--narrow {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 2rem;
}

/* ── Header ── */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--bg);
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(8px);
  background: rgba(247, 245, 240, 0.92);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  max-width: var(--max-w-wide);
  margin: 0 auto;
  padding: 0 2rem;
}
.site-logo {
  font-family: var(--font-display);
  font-size: 1.125rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  display: flex;
  align-items: baseline;
  gap: 0.2em;
}
.site-logo__prefix {
  color: var(--ink-muted);
  font-size: 0.875rem;
  font-family: var(--font-body);
  font-weight: 400;
}
.site-nav {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}
.site-nav a {
  font-size: 0.8125rem;
  font-weight: 400;
  color: var(--ink-muted);
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius);
  transition: color var(--transition), background var(--transition);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}
.site-nav a:hover { color: var(--ink); background: var(--border); }
.site-nav a.active { color: var(--ink); }
.search-btn {
  background: none;
  border: 1px solid var(--border-strong);
  padding: 0.375rem 0.75rem;
  border-radius: var(--radius);
  color: var(--ink-muted);
  font-size: 0.8125rem;
  cursor: pointer;
  font-family: var(--font-body);
  transition: all var(--transition);
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-left: 0.5rem;
}
.search-btn:hover { color: var(--ink); border-color: var(--ink); }

/* ── Hero (index) ── */
.hero {
  padding: 5rem 0 3.5rem;
  border-bottom: 1px solid var(--border);
}
.hero__eyebrow {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-muted);
  margin-bottom: 1rem;
  font-weight: 500;
}
.hero__title {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 5vw, 4rem);
  line-height: 1.1;
  letter-spacing: -0.02em;
  color: var(--ink);
  max-width: 600px;
}
.hero__title em {
  font-style: italic;
  color: var(--ink-muted);
}
.hero__desc {
  margin-top: 1.25rem;
  font-size: 1rem;
  color: var(--ink-muted);
  max-width: 480px;
  line-height: 1.6;
}

/* ── Category badges ── */
.badge {
  display: inline-flex;
  align-items: center;
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 2px;
  white-space: nowrap;
}
.badge--personal   { background: var(--cat-personal-bg);   color: var(--cat-personal); }
.badge--reflection { background: var(--cat-reflection-bg); color: var(--cat-reflection); }
.badge--professional { background: var(--cat-professional-bg); color: var(--cat-professional); }
.badge--archive    { background: var(--cat-archive-bg);    color: var(--cat-archive); }

/* ── Post cards grid ── */
.posts-section {
  padding: 3rem 0;
}
.posts-section__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}
.posts-section__title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}
.posts-section__count {
  font-size: 0.8125rem;
  color: var(--ink-muted);
}
.posts-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5px;
  background: var(--border);
  border: 1.5px solid var(--border);
}
.post-card {
  background: var(--surface);
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  transition: background var(--transition);
  position: relative;
}
.post-card:hover { background: #FDFCFA; }
.post-card__meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}
.post-card__date {
  font-size: 0.75rem;
  color: var(--ink-faint);
  letter-spacing: 0.02em;
}
.post-card__title {
  font-family: var(--font-display);
  font-size: 1.1875rem;
  line-height: 1.3;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.post-card__title a::after {
  content: '';
  position: absolute;
  inset: 0;
}
.post-card__excerpt {
  font-size: 0.875rem;
  color: var(--ink-muted);
  line-height: 1.6;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-card__footer {
  margin-top: auto;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.post-card__read {
  font-size: 0.75rem;
  color: var(--ink-faint);
}

/* Featured card (first post) */
.post-card--featured {
  grid-column: 1 / -1;
  flex-direction: row;
  align-items: flex-start;
  gap: 2rem;
  padding: 2.5rem;
}
.post-card--featured .post-card__content {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.post-card--featured .post-card__title {
  font-size: 1.5rem;
}
.post-card--featured .post-card__label {
  writing-mode: vertical-rl;
  text-orientation: mixed;
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ink-faint);
  flex-shrink: 0;
  user-select: none;
}

/* ── Category filter bar ── */
.filter-bar {
  display: flex;
  gap: 0.5rem;
  padding: 2rem 0 0;
  flex-wrap: wrap;
}
.filter-btn {
  background: none;
  border: 1px solid var(--border-strong);
  padding: 0.4rem 1rem;
  border-radius: 100px;
  font-size: 0.8125rem;
  font-family: var(--font-body);
  color: var(--ink-muted);
  cursor: pointer;
  transition: all var(--transition);
  font-weight: 400;
}
.filter-btn:hover, .filter-btn.active { 
  background: var(--ink); 
  border-color: var(--ink); 
  color: var(--bg); 
}
.filter-btn[data-cat="personal"].active   { background: var(--cat-personal);   border-color: var(--cat-personal); }
.filter-btn[data-cat="reflection"].active { background: var(--cat-reflection); border-color: var(--cat-reflection); }
.filter-btn[data-cat="professional"].active { background: var(--cat-professional); border-color: var(--cat-professional); }
.filter-btn[data-cat="archive"].active    { background: var(--cat-archive);    border-color: var(--cat-archive); }

/* ── Article / Post layout ── */
.post-header {
  padding: 4rem 0 2.5rem;
  border-bottom: 1px solid var(--border);
}
.post-header__meta {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}
.post-header__date {
  font-size: 0.8125rem;
  color: var(--ink-muted);
}
.post-header__back {
  font-size: 0.8125rem;
  color: var(--ink-muted);
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  transition: color var(--transition);
}
.post-header__back:hover { color: var(--ink); }
.post-header__title {
  font-family: var(--font-display);
  font-size: clamp(1.875rem, 4vw, 3rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  max-width: 680px;
}
.post-header__subtitle {
  margin-top: 1rem;
  font-size: 1.125rem;
  color: var(--ink-muted);
  max-width: 560px;
  font-weight: 300;
  line-height: 1.6;
}
.post-header__accent {
  display: block;
  width: 40px;
  height: 3px;
  margin-top: 2rem;
  border-radius: 2px;
}
.post-header__accent--personal   { background: var(--cat-personal); }
.post-header__accent--reflection  { background: var(--cat-reflection); }
.post-header__accent--professional { background: var(--cat-professional); }
.post-header__accent--archive     { background: var(--cat-archive); }

/* ── Article body ── */
.post-body {
  padding: 3rem 0 5rem;
}
.post-body__content {
  font-size: 1rem;
  line-height: 1.85;
  color: var(--ink);
}
.post-body__content h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  margin: 2.5rem 0 0.75rem;
  letter-spacing: -0.01em;
  line-height: 1.25;
}
.post-body__content h3 {
  font-size: 1.0625rem;
  font-weight: 500;
  margin: 2rem 0 0.5rem;
  color: var(--ink);
}
.post-body__content p { margin-bottom: 1.25rem; }
.post-body__content ul, .post-body__content ol {
  margin: 0 0 1.25rem 1.5rem;
}
.post-body__content li { margin-bottom: 0.4rem; }
.post-body__content blockquote {
  border-left: 3px solid var(--border-strong);
  padding: 0.75rem 1.25rem;
  margin: 2rem 0;
  color: var(--ink-muted);
  font-style: italic;
}
.post-body__content a {
  color: var(--ink);
  border-bottom: 1px solid var(--border-strong);
  transition: border-color var(--transition);
}
.post-body__content a:hover { border-color: var(--ink); }
.post-body__content code {
  font-size: 0.875em;
  background: var(--border);
  padding: 0.1em 0.4em;
  border-radius: 3px;
  font-family: 'SF Mono', 'Fira Code', monospace;
}
.post-body__content pre {
  background: var(--ink);
  color: var(--bg);
  padding: 1.5rem;
  border-radius: var(--radius);
  overflow-x: auto;
  margin: 1.5rem 0;
}
.post-body__content pre code { background: none; color: inherit; padding: 0; }
.post-body__content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 3rem 0;
}
.post-body__content strong { font-weight: 500; }

/* ── Post footer / nav ── */
.post-nav {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}
.post-nav__item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}
.post-nav__item--next { text-align: right; }
.post-nav__label {
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-faint);
}
.post-nav__title {
  font-size: 0.9375rem;
  color: var(--ink-muted);
  transition: color var(--transition);
}
.post-nav__title:hover { color: var(--ink); }

/* ── Search overlay ── */
.search-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(247, 245, 240, 0.96);
  backdrop-filter: blur(12px);
  z-index: 200;
  padding: 6rem 2rem 2rem;
  align-items: flex-start;
  justify-content: center;
}
.search-overlay.open { display: flex; }
.search-box {
  width: 100%;
  max-width: 600px;
}
.search-box__input {
  width: 100%;
  font-size: 1.5rem;
  font-family: var(--font-display);
  background: none;
  border: none;
  border-bottom: 2px solid var(--ink);
  padding: 0.75rem 0;
  color: var(--ink);
  outline: none;
  letter-spacing: -0.01em;
}
.search-box__input::placeholder { color: var(--ink-faint); }
.search-results {
  margin-top: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1px;
  background: var(--border);
  border: 1.5px solid var(--border);
}
.search-result {
  background: var(--surface);
  padding: 1.25rem 1.5rem;
  display: flex;
  align-items: baseline;
  gap: 1rem;
  transition: background var(--transition);
}
.search-result:hover { background: #FDFCFA; }
.search-result__title {
  font-family: var(--font-display);
  font-size: 1rem;
  color: var(--ink);
}
.search-result__excerpt {
  font-size: 0.8125rem;
  color: var(--ink-muted);
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}
.search-close {
  position: fixed;
  top: 1.5rem;
  right: 2rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--ink-muted);
  font-family: var(--font-body);
}

/* ── Category page ── */
.cat-header {
  padding: 4rem 0 2rem;
  border-bottom: 1px solid var(--border);
}
.cat-header__accent {
  display: block;
  width: 32px;
  height: 3px;
  margin-bottom: 1rem;
  border-radius: 2px;
}
.cat-header__title {
  font-family: var(--font-display);
  font-size: 2.5rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}
.cat-header__desc {
  color: var(--ink-muted);
  font-size: 0.9375rem;
}

/* ── Footer ── */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  margin-top: 4rem;
}
.site-footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
  color: var(--ink-faint);
}

/* ── Responsive ── */
@media (max-width: 640px) {
  .site-nav { display: none; }
  .posts-grid { grid-template-columns: 1fr; }
  .post-card--featured { flex-direction: column; }
  .post-card--featured .post-card__label { display: none; }
  .post-nav { grid-template-columns: 1fr; }
  .post-nav__item--next { text-align: left; }
}

/* ── Animations ── */
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}
.hero, .post-header { animation: fadeUp 0.5s ease both; }
.posts-grid .post-card:nth-child(1) { animation: fadeUp 0.4s 0.05s ease both; }
.posts-grid .post-card:nth-child(2) { animation: fadeUp 0.4s 0.10s ease both; }
.posts-grid .post-card:nth-child(3) { animation: fadeUp 0.4s 0.15s ease both; }
.posts-grid .post-card:nth-child(4) { animation: fadeUp 0.4s 0.20s ease both; }
.posts-grid .post-card:nth-child(5) { animation: fadeUp 0.4s 0.25s ease both; }