@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&family=IBM+Plex+Sans:wght@300;400;500&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
  --bg:         #0b0b0c;
  --bg-raised:  #111113;
  --fg:         #dbd9d2;
  --fg-dim:     #7a7870;
  --fg-ghost:   #3d3d3a;
  --accent:     #5b9e8f;
  --accent-dim: #3a6b60;
  --rule:       #1e1e20;
  --rule-light: #161618;
  --max-width:  660px;
  --mono:       'JetBrains Mono', monospace;
  --sans:       'IBM Plex Sans', -apple-system, sans-serif;
  --serif:      'Instrument Serif', Georgia, serif;
}

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

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

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--fg);
  line-height: 1.75;
  padding: 0 1.5rem;
}

::selection {
  background: var(--accent);
  color: var(--bg);
}

/* ── Site header ── */

.site-header {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 5rem 0 2.5rem;
}

.site-mark {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--fg);
}

.site-mark::before {
  content: '';
  display: block;
  width: 8px;
  height: 8px;
  background: var(--accent);
  border-radius: 1px;
  flex-shrink: 0;
}

.site-title {
  font-family: var(--mono);
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg);
}

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

.site-rule {
  width: 100%;
  height: 1px;
  background: var(--rule);
  margin-top: 2rem;
  position: relative;
}

.site-rule::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 80px;
  height: 1px;
  background: var(--accent-dim);
}

.site-description {
  margin-top: 1.5rem;
  font-family: var(--sans);
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--fg-dim);
  letter-spacing: 0.02em;
}

/* ── Tags ── */

.tag-nav {
  max-width: var(--max-width);
  margin: 2rem auto 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

.tag-btn {
  font-family: var(--mono);
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.06em;
  text-transform: lowercase;
  padding: 0.3rem 0.7rem;
  border: 1px solid var(--rule);
  border-radius: 1px;
  background: transparent;
  color: var(--fg-dim);
  cursor: pointer;
  transition: all 0.12s ease;
}

.tag-btn:hover {
  border-color: var(--fg-ghost);
  color: var(--fg);
}

.tag-btn.active {
  background: var(--accent-dim);
  border-color: var(--accent-dim);
  color: var(--fg);
}

/* ── Piece list ── */

.piece-list {
  max-width: var(--max-width);
  margin: 0 auto;
  list-style: none;
  counter-reset: pieces;
}

.piece-item {
  padding: 2rem 0;
  border-bottom: 1px solid var(--rule);
  counter-increment: pieces;
  position: relative;
}

.piece-item::before {
  content: counter(pieces, decimal-leading-zero);
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--fg-ghost);
  position: absolute;
  right: 0;
  top: 2.15rem;
  letter-spacing: 0.05em;
}

.piece-item a {
  text-decoration: none;
  color: inherit;
  display: block;
  padding-right: 3rem;
}

.piece-title {
  font-family: var(--serif);
  font-size: 1.4rem;
  font-weight: 400;
  font-style: normal;
  line-height: 1.35;
  margin-bottom: 0.4rem;
  letter-spacing: -0.01em;
  transition: color 0.12s ease;
}

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

.piece-excerpt {
  font-size: 0.85rem;
  font-weight: 300;
  color: var(--fg-dim);
  line-height: 1.6;
  margin-bottom: 0.75rem;
}

.piece-meta {
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--fg-ghost);
  letter-spacing: 0.04em;
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.piece-tag {
  color: var(--fg-dim);
}

.piece-tag::before {
  content: '//';
  color: var(--fg-ghost);
  margin-right: 0.15rem;
}

/* ── Single piece page ── */

.piece-header {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 5rem 0 2rem;
}

.piece-header h1 {
  font-family: var(--serif);
  font-size: 2.2rem;
  font-weight: 400;
  line-height: 1.25;
  margin-bottom: 1rem;
  letter-spacing: -0.015em;
}

.piece-header .piece-meta {
  padding-bottom: 2rem;
}

.piece-header .piece-rule {
  width: 100%;
  height: 1px;
  background: var(--rule);
  position: relative;
}

.piece-header .piece-rule::after {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 40px;
  height: 1px;
  background: var(--accent-dim);
}

.piece-content {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 0 6rem;
  font-weight: 300;
}

.piece-content p {
  margin-bottom: 1.5rem;
}

.piece-content strong {
  font-weight: 500;
  color: var(--fg);
}

.piece-content h2 {
  font-family: var(--serif);
  font-size: 1.35rem;
  font-weight: 400;
  margin: 3rem 0 1rem;
  letter-spacing: -0.01em;
}

.piece-content h3 {
  font-family: var(--sans);
  font-size: 0.9rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 2.5rem 0 0.8rem;
  color: var(--fg-dim);
}

.piece-content blockquote {
  border-left: 2px solid var(--accent-dim);
  padding-left: 1.25rem;
  margin: 2rem 0;
  color: var(--fg-dim);
  font-style: italic;
}

.piece-content code {
  font-family: var(--mono);
  font-size: 0.82em;
  background: var(--bg-raised);
  border: 1px solid var(--rule);
  padding: 0.15em 0.45em;
  border-radius: 2px;
  color: var(--accent);
}

.piece-content pre {
  background: var(--bg-raised);
  border: 1px solid var(--rule);
  padding: 1.5rem;
  border-radius: 2px;
  overflow-x: auto;
  margin: 2rem 0;
  font-size: 0.8rem;
  line-height: 1.6;
}

.piece-content pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--fg-dim);
}

.piece-content a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid var(--accent-dim);
  transition: border-color 0.12s ease;
}

.piece-content a:hover {
  border-color: var(--accent);
}

.piece-content img {
  max-width: 100%;
  margin: 2rem 0;
  border-radius: 2px;
}

.piece-content hr {
  border: none;
  height: 1px;
  background: var(--rule);
  margin: 3rem 0;
  position: relative;
}

.piece-content hr::after {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  transform: translateX(-50%);
  width: 20px;
  height: 1px;
  background: var(--accent-dim);
}

/* ── Back link ── */

.back-link {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--fg-dim);
  text-decoration: none;
  letter-spacing: 0.04em;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: color 0.12s ease;
}

.back-link::before {
  content: '';
  display: block;
  width: 16px;
  height: 1px;
  background: var(--fg-ghost);
  transition: background 0.12s ease, width 0.12s ease;
}

.back-link:hover {
  color: var(--accent);
}

.back-link:hover::before {
  background: var(--accent);
  width: 24px;
}

/* ── Footer ── */

.site-footer {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 0;
  border-top: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 0.6rem;
  color: var(--fg-ghost);
  letter-spacing: 0.06em;
}

/* ── Responsive ── */

@media (max-width: 600px) {
  .site-header { padding: 3.5rem 0 2rem; }
  .piece-header { padding: 3.5rem 0 1.5rem; }
  .piece-header h1 { font-size: 1.7rem; }
  .piece-item::before { display: none; }
  .piece-item a { padding-right: 0; }
}