/* controlaidelete.com — readable-page styles. The desktop-shell (window
   manager) CSS, adapted from tantalus_ui, is layered on in Phase 5/6.
   System font stack keeps CSP clean (no external fonts); self-hosted woff2 is a
   later refinement. */

:root {
  --void: #0B0E11;
  --void-2: #12161b;
  --void-3: #1a1f26;
  --paper: #E8E6DF;
  --muted: #9aa4ad;
  --signal: #FF3B30;
  --wire: #5B6670;
  --cyan: #3AD0C8;
  --display: ui-sans-serif, "Segoe UI", system-ui, -apple-system, "Helvetica Neue", Arial, sans-serif;
  --body: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", "Cascadia Code", Menlo, Consolas, monospace;
  --maxw: 46rem;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--void);
  color: var(--paper);
  font-family: var(--body);
  font-size: 17px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

:focus-visible {
  outline: 2px solid var(--cyan);
  outline-offset: 2px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--signal);
  color: #fff;
  padding: 8px 14px;
  z-index: 100;
}
.skip-link:focus { left: 8px; top: 8px; }

/* ── chrome ───────────────────────────────────────────────────────── */
.site-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
  padding: 0.9rem clamp(1rem, 4vw, 2.5rem);
  border-bottom: 1px solid var(--void-3);
  background: linear-gradient(180deg, var(--void-2), var(--void));
}
.site-wordmark {
  font-family: var(--display);
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--paper);
  font-size: 1.15rem;
}
.site-wordmark::before { content: "⏻ "; color: var(--signal); }
.site-nav { display: flex; gap: 1.1rem; font-size: 0.95rem; }
.site-nav a { color: var(--muted); }
.site-nav a:hover { color: var(--paper); }

.site-foot {
  max-width: var(--maxw);
  margin: 4rem auto 3rem;
  padding: 1.5rem clamp(1rem, 4vw, 2rem) 0;
  border-top: 1px solid var(--void-3);
  color: var(--muted);
  font-size: 0.85rem;
}
.site-foot .disclosure { color: var(--wire); }

/* ── reading column ──────────────────────────────────────────────── */
.reading {
  max-width: var(--maxw);
  margin: 0 auto;
  padding: clamp(1.5rem, 4vw, 3rem) clamp(1rem, 4vw, 2rem) 0;
}

h1, h2, h3, h4 { font-family: var(--display); line-height: 1.25; letter-spacing: -0.015em; }
h1 { font-size: clamp(1.8rem, 5vw, 2.6rem); margin: 0 0 0.4rem; }
h2 { font-size: 1.5rem; margin: 2.4rem 0 0.8rem; }
h3 { font-size: 1.2rem; margin: 1.8rem 0 0.6rem; }

.intro { font-size: 1.15rem; color: var(--paper); margin-bottom: 2.5rem; }

/* ── post cards (index/tag) ──────────────────────────────────────── */
.cards { list-style: none; margin: 0; padding: 0; display: grid; gap: 1.4rem; }
.card {
  border: 1px solid var(--void-3);
  border-left: 3px solid var(--wire);
  border-radius: 4px;
  padding: 1.1rem 1.3rem;
  background: var(--void-2);
  transition: border-color 0.15s ease;
}
.card:hover { border-left-color: var(--signal); }
.card-title { font-family: var(--display); font-size: 1.3rem; font-weight: 650; }
.card-meta, .post-meta { color: var(--muted); font-size: 0.85rem; margin: 0.25rem 0 0.6rem; }
.card-summary { margin: 0 0 0.7rem; color: #c7ccd2; }

.tag-chips { list-style: none; display: flex; flex-wrap: wrap; gap: 0.4rem; margin: 0.6rem 0 0; padding: 0; }
.tag-chips a {
  display: inline-block;
  font-size: 0.78rem;
  font-family: var(--mono);
  color: var(--muted);
  background: var(--void-3);
  padding: 0.12rem 0.5rem;
  border-radius: 999px;
}
.tag-chips a::before { content: "#"; opacity: 0.6; }
.tag-chips a:hover { color: var(--paper); text-decoration: none; }

/* ── list / archive / tags pages ─────────────────────────────────── */
.list-head { margin-bottom: 1.6rem; }
.list-desc { color: var(--muted); }
.archive-list, .tag-index { list-style: none; padding: 0; }
.archive-list li { display: flex; gap: 0.9rem; padding: 0.3rem 0; border-bottom: 1px dotted var(--void-3); }
.archive-list time { color: var(--wire); font-family: var(--mono); font-size: 0.85rem; min-width: 6.5rem; }
.year h2 { border-bottom: 1px solid var(--void-3); padding-bottom: 0.3rem; }
.tag-index li { padding: 0.3rem 0; }
.tag-count { color: var(--wire); font-family: var(--mono); font-size: 0.8rem; }

/* ── post body ───────────────────────────────────────────────────── */
.post-body { font-size: 1.05rem; }
.post-body p { margin: 1.1rem 0; }
.post-body ul, .post-body ol { padding-left: 1.4rem; }
.post-body li { margin: 0.35rem 0; }
.post-body a { border-bottom: 1px solid color-mix(in srgb, var(--cyan) 40%, transparent); }
.post-body blockquote {
  margin: 1.4rem 0;
  padding: 0.4rem 0 0.4rem 1.1rem;
  border-left: 3px solid var(--wire);
  color: #c7ccd2;
  font-style: italic;
}
.post-body code:not(pre code) {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--void-3);
  padding: 0.1rem 0.35rem;
  border-radius: 3px;
}
.post-body img { max-width: 100%; height: auto; border-radius: 4px; }
.post-body table { border-collapse: collapse; width: 100%; margin: 1.2rem 0; font-size: 0.95rem; }
.post-body th, .post-body td { border: 1px solid var(--void-3); padding: 0.4rem 0.6rem; text-align: left; }

/* ── table of contents ──────────────────────────────────────────── */
.toc {
  background: var(--void-2);
  border: 1px solid var(--void-3);
  border-radius: 4px;
  padding: 0.8rem 1rem;
  margin: 1.5rem 0;
  font-size: 0.92rem;
}
.toc ul { list-style: none; margin: 0; padding: 0; }
.toc .toc-l3 { padding-left: 1.1rem; }
.toc a { color: var(--muted); }

/* ── code blocks ─────────────────────────────────────────────────── */
pre.codeblock {
  position: relative;
  margin: 1.5rem 0;
  padding: 1rem 1.1rem;
  background: #0d1117;
  border: 1px solid var(--void-3);
  border-radius: 5px;
  overflow-x: auto;
  font-family: var(--mono);
  font-size: 0.86rem;
  line-height: 1.55;
}
pre.codeblock code { font-family: inherit; }
.copy-btn {
  position: absolute;
  bottom: 0.5rem;
  right: 0.5rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--muted);
  background: var(--void-3);
  border: 1px solid var(--wire);
  border-radius: 3px;
  padding: 0.12rem 0.5rem;
  cursor: pointer;
  opacity: 0;
  transition: opacity 0.15s ease;
}
pre.codeblock:hover .copy-btn,
.copy-btn:focus-visible { opacity: 1; }
.copy-btn:hover { color: var(--paper); border-color: var(--cyan); }
pre.codeblock[data-lang]::after {
  content: attr(data-lang);
  position: absolute;
  top: 0; right: 0;
  font-size: 0.68rem;
  color: var(--wire);
  background: var(--void-3);
  padding: 0.1rem 0.5rem;
  border-radius: 0 5px 0 5px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
/* device rail: BYPASS / POC / PATCH */
pre.codeblock.bypass, pre.codeblock.poc, pre.codeblock.patch { border-left-width: 4px; }
pre.codeblock.bypass { border-left-color: var(--signal); }
pre.codeblock.poc { border-left-color: var(--cyan); }
pre.codeblock.patch { border-left-color: #58d36e; }
.codeblock-label {
  display: inline-block;
  font-family: var(--display);
  font-weight: 700;
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  padding: 0.05rem 0.5rem;
  margin-bottom: 0.6rem;
  border-radius: 3px;
  color: var(--void);
}
.codeblock.bypass .codeblock-label { background: var(--signal); color: #fff; }
.codeblock.poc .codeblock-label { background: var(--cyan); }
.codeblock.patch .codeblock-label { background: #58d36e; }

/* syntect token colors (ClassStyle prefix "cad-") — dark theme */
.cad-comment { color: #6a7681; font-style: italic; }
.cad-string { color: #9ece6a; }
.cad-constant { color: #ff9e64; }
.cad-keyword, .cad-storage { color: #bb9af7; }
.cad-function, .cad-entity { color: #7aa2f7; }
.cad-variable { color: #e0def4; }
.cad-support { color: #2ac3de; }
.cad-punctuation { color: var(--muted); }
.cad-meta { color: var(--paper); }

/* ── PoC / related / prevnext / discuss ──────────────────────────── */
.pocs, .related, .discuss { margin-top: 2.2rem; }
.poc-list { list-style: none; padding: 0; }
.poc-list li { padding: 0.5rem 0; border-bottom: 1px dotted var(--void-3); }
.poc-dl { font-weight: 600; }
.poc-meta { color: var(--wire); font-family: var(--mono); font-size: 0.8rem; margin-left: 0.5rem; }
.poc-hash code { font-family: var(--mono); font-size: 0.72rem; color: var(--muted); word-break: break-all; }
.related ul { list-style: none; padding: 0; }
.related li { padding: 0.25rem 0; }
.prevnext { display: flex; justify-content: space-between; gap: 1rem; margin-top: 2.5rem; flex-wrap: wrap; }
.prevnext a { color: var(--muted); font-size: 0.95rem; }
.discuss { display: flex; gap: 1.2rem; padding-top: 1.2rem; border-top: 1px solid var(--void-3); font-size: 0.9rem; }

.error-page { text-align: center; padding-top: 4rem; }
.error-page h1 { font-size: 5rem; color: var(--signal); }

.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0;
}

/* ══ desktop shell (homepage) — adapted from tantalus_ui, rebranded ══ */
body.shell { height: 100vh; overflow: hidden; }
.svg-defs { position: absolute; width: 0; height: 0; }

.menubar {
  position: fixed; top: 0; left: 0; right: 0; height: 40px; z-index: 1000;
  display: flex; align-items: center; gap: 0.4rem;
  padding: 0 clamp(0.6rem, 2vw, 1rem);
  background: var(--void-2);
  border-bottom: 1px solid var(--void-3);
  font-size: 0.85rem;
}
.menubar .logo { font-family: var(--display); font-weight: 700; letter-spacing: -0.02em; color: var(--paper); padding: 0 0.4rem; }
.menubar .logo::before { content: "⏻ "; color: var(--signal); }
.menubar .logo:hover { text-decoration: none; }
.menubar-nav { display: flex; gap: 0.3rem; }
.menubar-nav a { color: var(--muted); padding: 0.2rem 0.6rem; border-radius: 4px; }
.menubar-nav a:hover { color: var(--paper); background: var(--void-3); text-decoration: none; }
.menubar .spacer { flex: 1; }
.menubar .clock { font-family: var(--mono); font-variant-numeric: tabular-nums; color: var(--muted); font-size: 0.8rem; }

.desktop {
  position: fixed; inset: 40px 0 0 0; overflow: auto;
  background:
    radial-gradient(ellipse at 28% 18%, rgba(255,59,48,0.05), transparent 60%),
    radial-gradient(ellipse at 72% 82%, rgba(58,208,200,0.04), transparent 60%),
    repeating-linear-gradient(0deg, rgba(255,255,255,0.012) 0 1px, transparent 1px 64px),
    repeating-linear-gradient(90deg, rgba(255,255,255,0.012) 0 1px, transparent 1px 64px),
    var(--void);
}
.icon-grid {
  list-style: none; margin: 0; padding: clamp(1rem, 3vw, 2rem);
  display: grid; grid-template-columns: repeat(auto-fill, 112px); gap: 1rem 0.6rem;
  align-content: start;
}
.icon-grid li { display: block; }
.file-icon {
  display: flex; flex-direction: column; align-items: center; gap: 0.5rem;
  width: 112px; padding: 0.6rem 0.3rem; border-radius: 6px;
  color: var(--paper); text-align: center; user-select: none;
}
.file-icon:hover { background: rgba(255,255,255,0.05); text-decoration: none; }
.file-icon:focus-visible { background: rgba(58,208,200,0.12); }
.file-icon .glyph { width: 52px; height: 56px; filter: drop-shadow(0 4px 8px rgba(0,0,0,0.45)); }
.file-icon .glyph svg { width: 100%; height: 100%; }
.file-icon .caption {
  font-family: var(--mono); font-size: 0.75rem; line-height: 1.3;
  max-width: 104px; overflow-wrap: anywhere;
  display: -webkit-box; -webkit-line-clamp: 3; -webkit-box-orient: vertical; overflow: hidden;
}

/* ── windows ── */
.window {
  position: absolute; display: flex; flex-direction: column; overflow: hidden;
  min-width: 320px; min-height: 200px;
  background: var(--void-2); border: 1px solid var(--wire); border-radius: 8px;
  box-shadow: 0 30px 80px -20px rgba(0,0,0,0.65), 0 0 0 1px rgba(255,255,255,0.03);
  animation: winOpen 0.32s cubic-bezier(0.2, 0.9, 0.3, 1.15) both;
  transition: left 0.18s ease, top 0.18s ease, width 0.18s ease, height 0.18s ease;
}
.window.no-transition { transition: none; animation: none; }
.window.closing { transform: scale(0.94) translateY(14px); opacity: 0; pointer-events: none; transition: transform 0.22s ease, opacity 0.22s ease; }
@keyframes winOpen { from { transform: scale(0.9) translateY(16px); opacity: 0; } to { transform: scale(1) translateY(0); opacity: 1; } }
.window-chrome {
  flex-shrink: 0; display: grid; grid-template-columns: 70px 1fr auto; align-items: center; gap: 0.6rem;
  padding: 0.5rem 0.8rem; background: var(--void-3); border-bottom: 1px solid var(--void); cursor: move; user-select: none;
}
.traffic { display: flex; gap: 0.5rem; }
.traffic span { width: 12px; height: 12px; border-radius: 50%; cursor: pointer; display: inline-block; }
.traffic .close { background: #ff5f57; }
.traffic .min { background: #febc2e; }
.traffic .max { background: #28c840; }
.traffic .close:hover { box-shadow: 0 0 0 2px rgba(255,95,87,0.3); }
.window-title { font-family: var(--mono); font-size: 0.8rem; color: var(--paper); text-align: center; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.window-title .ext { color: var(--wire); }
.open-as-page { font-size: 0.72rem; color: var(--muted); white-space: nowrap; }
.window-body { flex: 1; overflow: auto; min-height: 0; padding: 1.6rem clamp(1.2rem, 4%, 2.4rem); }
.window-body .post-head h1 { font-size: clamp(1.5rem, 3vw, 2rem); }
.window-loading { color: var(--muted); padding: 1rem; }
.snap-preview {
  position: fixed; z-index: 9998; pointer-events: none; opacity: 0; border-radius: 8px;
  background: rgba(255,59,48,0.08); border: 2px solid rgba(255,59,48,0.32);
  transition: opacity 0.15s ease;
}
.snap-preview.visible { opacity: 1; }

/* ── mobile sheets (full-screen, hardware-back closes) ── */
body.sheet-open { overflow: hidden; }
.sheet {
  position: fixed; inset: 0; z-index: 2000;
  display: flex; flex-direction: column;
  background: var(--void);
  animation: sheetUp 0.22s ease both;
}
@keyframes sheetUp { from { transform: translateY(2%); opacity: 0.6; } to { transform: none; opacity: 1; } }
.sheet-bar {
  flex-shrink: 0; display: flex; align-items: center; gap: 0.6rem;
  padding: calc(env(safe-area-inset-top, 0px) + 0.55rem) 0.8rem 0.55rem;
  background: var(--void-2); border-bottom: 1px solid var(--void-3);
}
.sheet-close {
  background: var(--void-3); color: var(--paper);
  border: 1px solid var(--wire); border-radius: 6px;
  padding: 0.4rem 0.85rem; font-family: var(--mono); font-size: 0.82rem; cursor: pointer;
}
.sheet-close:hover { border-color: var(--signal); }
.sheet-title { flex: 1; font-family: var(--mono); font-size: 0.8rem; color: var(--muted); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.sheet-page { font-size: 0.82rem; white-space: nowrap; }
.sheet-body {
  flex: 1; overflow-y: auto; -webkit-overflow-scrolling: touch;
  padding: 1.2rem clamp(1rem, 5vw, 1.5rem) calc(env(safe-area-inset-bottom, 0px) + 2.5rem);
}

/* ── mobile clipping fixes ── */
@media (max-width: 560px) {
  .reading h1, .post-head h1, .sheet-body .post-head h1, .window-body .post-head h1 { font-size: 1.55rem; }
  .post-body, .sheet-body, .window-body { overflow-wrap: anywhere; }
  pre.codeblock { font-size: 0.8rem; }
  .menubar-nav a { padding: 0.2rem 0.4rem; }
  .icon-grid { grid-template-columns: repeat(auto-fill, minmax(90px, 1fr)); }
  .file-icon, .icon-grid li > .file-icon { width: auto; }
}

/* ── light scheme ────────────────────────────────────────────────── */
@media (prefers-color-scheme: light) {
  :root {
    --void: #F4F2EC;
    --void-2: #fbfaf6;
    --void-3: #e2ded3;
    --paper: #1a1d21;
    --muted: #5b6670;
    --wire: #8a939c;
  }
  body { color: var(--paper); }
  .card-summary { color: #3a4047; }
  pre.codeblock { background: #f6f8fa; }
  .cad-comment { color: #8a939c; }
  .cad-string { color: #2a7d2a; }
  .cad-keyword, .cad-storage { color: #8250df; }
  .cad-function, .cad-entity { color: #1f6feb; }
  .cad-variable, .cad-meta { color: #1a1d21; }
}

/* ── reduced motion ──────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
}