/* ---------------------------------------------------------------
 * treszek.github.io
 * Swiss / International Typographic Style, dark, monotone + one accent.
 * Hard divisions, exposed borders, utilitarian labels. No decoration.
 * Layout: bare header / collapsible recent bar / sidebar · feed · grass rail
 * --------------------------------------------------------------- */
:root {
  --bg: #020715;
  --bg-raised: #0a101f;
  --border: #1a2233;
  --border-hard: #2c3852;
  --text: #d7dde3;        /* titles & bold */
  --text-body: #d7dde3;   /* body copy */
  --text-dim: #98a1ab;    /* muted: numbers, dates, labels — a touch clearer than the original */
  --text-faint: #6f7889;
  --accent: #955d41;
  --accent-dim: #774a34;

  /* grass levels — accent-based brown scale (github & blog unified) */
  --g0: #101827;
  --g1: #322219;
  --g2: #543525;
  --g3: #764a34;
  --g4: #955d41;

  --mono: ui-monospace, "Cascadia Code", "JetBrains Mono", Consolas, monospace;
}

* { box-sizing: border-box; }

html {
  background: var(--bg);
  color-scheme: dark;
}

body {
  margin: 0;
  font-family: "Pretendard Variable", Pretendard, -apple-system, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.7;
  color: var(--text-body);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

/* fluid container — fills the viewport, no leftover gutter */
.wrap {
  width: 100%;
  margin: 0;
  padding: 0 1.5rem;
}

a { color: var(--text); text-decoration: none; }
a:hover { color: var(--accent); }

/* utilitarian label */
.label,
.post-board,
.post-project,
.recent-board {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text-faint);
}

/* ---- header: title only ------------------------------------------ */
.site-header {
  border-bottom: 2px solid var(--border-hard);
}
.site-header .wrap {
  padding-top: 1.1rem;
  padding-bottom: 1.1rem;
}
.site-name {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}

/* ---- recent bar (menu strip under the header) --------------------- */
.recent-bar {
  border-bottom: 1px solid var(--border);
}
/* recent bar content aligns with the article column (sidebar + gap offset) */
.recent-bar .wrap {
  padding-left: calc(1.5rem + 11.5rem + 3rem);
}
#recent-toggle {
  display: block;
  width: 100%;
  text-align: left;
  background: none;
  border: none;
  padding: 0.55rem 0;
  cursor: pointer;
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
#recent-toggle:hover { color: var(--accent); }
#recent-toggle .chev {
  display: inline-block;
  margin-left: 0.5rem;
  transition: transform 0.15s;
}
#recent-toggle.open .chev { transform: rotate(180deg); }

#recent-panel {
  border-top: 1px solid var(--border);
  padding: 0.5rem 0 0.75rem;
  touch-action: pan-y;
}
.recent-list {
  list-style: none;
  margin: 0;
  padding: 0;
}
.recent-list li {
  display: grid;
  grid-template-columns: 6.5rem minmax(0, 1fr) auto;
  align-items: baseline;
  gap: 1.25rem;
  padding: 0.4rem 0;
  border-bottom: 1px solid var(--border);
}
.recent-list time {
  font-family: var(--mono);
  font-size: 0.83rem;
  color: var(--text-faint);
  font-variant-numeric: tabular-nums;
}
.recent-list a {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.recent-pager {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding-top: 0.6rem;
}
.recent-pager button {
  background: none;
  border: 1px solid var(--border-hard);
  color: var(--text-dim);
  font-family: var(--mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  padding: 0.25rem 0.8rem;
  cursor: pointer;
}
.recent-pager button:hover:not(:disabled) {
  color: var(--accent);
  border-color: var(--accent);
}
.recent-pager button:disabled {
  opacity: 0.35;
  cursor: default;
}
.pg-info {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text-faint);
  font-variant-numeric: tabular-nums;
}

/* ---- main layout: sidebar | feed (fluid) | grass rail ---------------------- */
.layout {
  display: grid;
  grid-template-columns: 11.5rem minmax(0, 1fr) auto;
  gap: 3rem;
  padding-top: 2.5rem;
  padding-bottom: 4rem;
  min-height: 60vh;
  align-items: start;
}

/* sidebar */
.sidebar {
  position: sticky;
  top: 1.5rem;
}

/* profile (index) block — exactly the sidebar's width */
.profile-card {
  border: 1px solid var(--border-hard);
  padding: 0.9rem;
  margin-bottom: 1.75rem;
}
.profile-card img {
  display: block;
  margin: 0 auto;
  width: 100%;
  height: auto;
}
.profile-tagline {
  margin: 0.75rem 0 0.5rem;
  font-size: 0.9rem;
  line-height: 1.5;
  color: var(--text-dim);
}
.profile-github {
  font-family: var(--mono);
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--text);
}
.profile-github:hover { color: var(--accent); }

/* board nav — parent folder (project) + children, all caps */
.board-nav {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border);
}
.board-nav a {
  font-family: var(--mono);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-bottom: 1px solid var(--border);
}
.board-nav .nav-root {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--text);
  padding: 0.5rem 0;
}
.board-nav .nav-sub {
  font-size: 0.83rem;
  color: var(--text-dim);
  padding: 0.45rem 0 0.45rem 1.1rem;
}
.board-nav a:hover { color: var(--accent); }
.board-nav a[aria-current="page"] {
  color: var(--text);
  border-left: 2px solid var(--accent);
}
.board-nav .nav-root[aria-current="page"] { padding-left: 0.5rem; }
.board-nav .nav-sub[aria-current="page"] { padding-left: calc(1.1rem - 2px); }

/* grass rail */
.grass-rail {
  position: sticky;
  top: 1.5rem;
}
.rail-sec + .rail-sec { margin-top: 1.75rem; }
.grass-note {
  font-family: var(--mono);
  font-size: 0.73rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-faint);
}
.grass svg { display: block; }
.grass .g0 { fill: var(--g0); }
.grass .g1 { fill: var(--g1); }
.grass .g2 { fill: var(--g2); }
.grass .g3 { fill: var(--g3); }
.grass .g4 { fill: var(--g4); }
.grass .g-today { stroke: #f3f2ed; stroke-width: 1; }
.grass-label {
  fill: var(--text-faint);
  font-size: 10px;
  font-family: var(--mono);
}
.grass-meta {
  font-family: var(--mono);
  font-size: 0.73rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-faint);
  margin-bottom: 0.6rem;
}
.grass-meta strong {
  display: block;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 0.1rem;
}
.grass-meta span { display: block; }
.grass-year {
  font-family: var(--mono);
  font-size: 0.73rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-faint);
  text-align: right; /* the trailing digit sits flush with the grid's right edge */
  margin-top: 0.35rem;
}

/* ---- feed (single-page view) ----------------------------------------- */
.feed-item {
  border-top: 2px solid var(--border-hard);
  padding-top: 1.25rem;
  margin-bottom: 3.5rem;
}
.feed-item:first-child { border-top: none; padding-top: 0; }
.feed-header { margin-bottom: 1.25rem; }
.feed-title {
  margin: 0.4rem 0 0;
  font-size: 1.4rem;
  font-weight: 800;
  line-height: 1.3;
  letter-spacing: -0.015em;
}
.feed-title a:hover { color: var(--accent); }
.empty { color: var(--text-faint); }

/* feed pagination: << < 0 1 2 ... > >> */
.feed-pager {
  display: flex;
  gap: 0.35rem;
  border-top: 2px solid var(--border-hard);
  padding-top: 1rem;
  margin-top: 2.5rem;
}
.feed-pager button {
  background: none;
  border: none;
  cursor: pointer;
  min-width: 1.9rem;
  padding: 0.25rem 0.4rem;
  font-family: var(--mono);
  font-size: 0.83rem;
  font-variant-numeric: tabular-nums;
  color: var(--text-dim);
}
.feed-pager button:hover:not(:disabled) { color: var(--accent); }
.feed-pager button:disabled { opacity: 0.35; cursor: default; }
.feed-pager button[aria-current="page"] {
  color: var(--text);
  font-weight: 700;
  border-bottom: 2px solid var(--accent);
}

/* ---- single post ------------------------------------------------------ */
.post-header {
  margin-bottom: 2.5rem;
  padding-bottom: 1.5rem;
  border-bottom: 2px solid var(--border-hard);
}
.post-header h1 {
  margin: 0.6rem 0 0;
  font-size: 2rem;
  font-weight: 800;
  line-height: 1.25;
  letter-spacing: -0.015em;
}
.post-meta {
  margin: 0;
  display: flex;
  gap: 1.25rem;
  align-items: baseline;
}
.post-meta time {
  font-family: var(--mono);
  font-size: 0.86rem;
  color: var(--text-faint);
  font-variant-numeric: tabular-nums;
}
.post-board:hover { color: var(--accent); }

/* ---- post body ---------------------------------------------------------- */
.post-body { max-width: none; }
.post-body strong { color: var(--text); }
.post-body h2, .post-body h3 { color: var(--text); }
.post-body h2 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 2.5rem 0 0.75rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}
.post-body h3 { font-size: 1rem; font-weight: 700; margin: 1.75rem 0 0.5rem; }
.post-body p { margin: 0.9rem 0; }
.post-body a {
  color: var(--text-body);
  border-bottom: 1px solid var(--border-hard);
}
.post-body a:hover { color: var(--accent); border-color: var(--accent); }
.post-body img,
.post-body video {
  max-width: 100%;
  height: auto;
  border: 1px solid var(--border-hard);
  display: block;
}
.post-body blockquote {
  margin: 1.25rem 0;
  padding: 0.1rem 1.25rem;
  border-left: 2px solid var(--border-hard);
  color: var(--text-dim);
}
.post-body hr {
  border: none;
  border-top: 1px solid var(--border-hard);
  margin: 2.5rem 0;
}
.post-body ul, .post-body ol { padding-left: 1.4rem; }
.post-body table {
  border-collapse: collapse;
  width: 100%;
  font-size: 0.92rem;
}
.post-body th, .post-body td {
  border: 1px solid var(--border);
  padding: 0.4rem 0.7rem;
  text-align: left;
}
.post-body th {
  background: var(--bg-raised);
  font-family: var(--mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-dim);
}

/* alignment utilities — {.center} / {.right} after a paragraph */
.center { text-align: center; }
.right  { text-align: right; }
.left   { text-align: left; }

/* ---- embeds --------------------------------------------------------------- */
.embed-video {
  position: relative;
  aspect-ratio: 16 / 9;
  margin: 1.25rem 0;
  border: 1px solid var(--border-hard);
}
.embed-video iframe {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
}
video.embed-file {
  width: 100%;
  margin: 1.25rem 0;
}
.linkcard {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 1rem;
  align-items: baseline;
  margin: 1.25rem 0;
  padding: 0.65rem 0.9rem;
  border: 1px solid var(--border-hard);
  border-left: 3px solid var(--accent-dim);
}
.post-body .linkcard { border-bottom: 1px solid var(--border-hard); }
.linkcard:hover { border-color: var(--accent); }
.linkcard-host {
  font-family: var(--mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--text-dim);
}
.linkcard-url {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text-faint);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

/* ---- code -------------------------------------------------------------------- */
code { font-family: var(--mono); font-size: 0.86em; }
:not(pre) > code {
  background: var(--bg-raised);
  border: 1px solid var(--border);
  padding: 0.1em 0.35em;
}
pre[class*="language-"],
pre {
  background: var(--bg-raised);
  border: 1px solid var(--border-hard);
  padding: 1rem 1.1rem;
  overflow-x: auto;
  line-height: 1.55;
  margin: 1.25rem 0;
  font-size: 0.86rem;
}

/* prism tokens — muted, quiet */
.token.comment, .token.prolog, .token.doctype, .token.cdata { color: var(--text-faint); font-style: italic; }
.token.punctuation { color: var(--text-dim); }
.token.property, .token.tag, .token.constant, .token.symbol, .token.deleted { color: #ff7b72; }
.token.boolean, .token.number { color: #79c0ff; }
.token.selector, .token.attr-name, .token.string, .token.char, .token.builtin, .token.inserted { color: #a5d6ff; }
.token.operator, .token.entity, .token.url { color: var(--text-dim); }
.token.atrule, .token.attr-value, .token.keyword { color: #ff7b72; }
.token.function, .token.class-name { color: #d2a8ff; }
.token.regex, .token.important, .token.variable { color: #ffa657; }
.token.important, .token.bold { font-weight: 600; }

/* ---- responsive -------------------------------------------------------------------- */
@media (max-width: 900px) {
  body { font-size: 15px; }
  .recent-bar .wrap { padding-left: 1.5rem; }
  .layout {
    grid-template-columns: 1fr;
    gap: 2rem;
    padding-top: 1.5rem;
  }
  .sidebar {
    position: static;
    display: flex;
    align-items: flex-start;
    gap: 1.5rem;
  }
  .profile-card {
    width: 9rem;
    flex-shrink: 0;
    margin-bottom: 0;
  }
  .board-nav { flex: 1; }
  .grass-rail {
    position: static;
    order: 3; /* grass after content on mobile */
  }
  .recent-list li {
    grid-template-columns: 1fr;
    gap: 0.1rem;
    padding: 0.55rem 0;
  }
  .recent-list a { white-space: normal; }
  .post-header h1 { font-size: 1.5rem; }
  .feed-title { font-size: 1.2rem; }
}