/* =========================================================================
   Pranay Varma — reading view
   Inherits tokens from styles.css. Adds article layout, code blocks,
   reading-progress bar, and Prism syntax-highlight tokens.
   ========================================================================= */

/* Top reading-progress bar */
.progress {
  position: fixed;
  top: 0; left: 0;
  height: 2px;
  width: 0;
  background: var(--accent);
  z-index: 60;
  transition: width 80ms linear;
  pointer-events: none;
}

/* Header tweaks for the reading page */
.post-header { justify-content: space-between; }
.back {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--ink-2);
  position: relative;
  padding-bottom: 2px;
}
.back::after {
  content: "";
  position: absolute; left: 0; right: 0; bottom: -2px;
  height: 1px; background: var(--ink);
  transform: scaleX(0); transform-origin: left;
  transition: transform 320ms var(--ease);
}
.back:hover::after { transform: scaleX(1); }
.back:hover { color: var(--accent); }

/* Article container */
.post-page {
  max-width: 38rem;
  margin: 0 auto;
  padding: clamp(1.4rem, 3vw, 3.5rem) clamp(1.2rem, 4vw, 1.8rem) clamp(2rem, 4vw, 3.5rem);
}

/* Head */
.post-page__head {
  margin-bottom: 2.4rem;
}
.post-page__kicker {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-2);
  margin: 0 0 1.4rem;
}
.post-page__num { color: var(--accent); }

.post-page__title {
  margin: 0 0 0.8rem;
  font-size: clamp(2rem, 1.4rem + 2.2vw, 3.4rem);
  font-variation-settings: "opsz" 144, "SOFT" 50, "WONK" 1;
  font-weight: 360;
  line-height: 1.06;
  letter-spacing: -0.02em;
  color: var(--ink);
  text-wrap: balance;
}
.post-page__title em {
  font-style: italic;
  font-variation-settings: "opsz" 144, "WONK" 1;
  color: var(--accent);
}

.post-page__dek {
  margin: 0 0 1.4rem;
  font-size: clamp(1.05rem, 0.95rem + 0.4vw, 1.22rem);
  line-height: 1.5;
  font-style: italic;
  color: var(--ink-2);
  max-width: 38ch;
}

.post-page__meta {
  margin: 0;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: var(--muted);
  text-transform: uppercase;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  align-items: center;
}
.post-page__meta .dot { opacity: 0.6; }

.post-page__rule {
  border: 0;
  border-top: 1px solid var(--rule);
  margin: 0 0 2.6rem;
}

/* Article body — measured for reading */
.post-page__body {
  font-family: var(--serif);
  font-variation-settings: "opsz" 16, "SOFT" 30, "WONK" 0;
  font-size: clamp(1.05rem, 0.97rem + 0.32vw, 1.18rem);
  line-height: 1.7;
  color: var(--ink);
  letter-spacing: 0.005em;
}

.post-page__body > * + * { margin-top: 1.1rem; }
.post-page__body p { margin: 0 0 1.1rem; }

/* Headings inside body */
.post-page__body h1 { display: none; } /* title is rendered in head */
.post-page__body h2,
.post-page__body h3,
.post-page__body h4 {
  font-variation-settings: "opsz" 96, "SOFT" 50, "WONK" 1;
  font-weight: 380;
  letter-spacing: -0.012em;
  line-height: 1.2;
  color: var(--ink);
  margin: 2.4rem 0 0.8rem;
  scroll-margin-top: 5rem;
}
.post-page__body h2 {
  font-size: clamp(1.4rem, 1.05rem + 1.4vw, 1.85rem);
  padding-top: 1.4rem;
  border-top: 1px solid var(--rule-soft);
}
.post-page__body h3 {
  font-size: clamp(1.18rem, 0.95rem + 0.9vw, 1.4rem);
}
.post-page__body h4 {
  font-size: 1.08rem;
  font-style: italic;
}

/* Strong / em / highlight
   - *em*       → bronze italic (key phrases, e.g. "AI harnesses")
   - **strong** → bold ink (regular emphasis)
   - <mark>     → soft bronze underline highlight (use sparingly) */
.post-page__body strong { font-weight: 540; color: var(--ink); }
.post-page__body em {
  font-style: italic;
  color: var(--accent);
}
.post-page__body mark {
  background: transparent;
  color: var(--ink);
  padding: 0 0.06em;
  background-image: linear-gradient(transparent 62%, color-mix(in srgb, var(--accent) 28%, transparent) 62%, color-mix(in srgb, var(--accent) 28%, transparent) 92%, transparent 92%);
}
/* Inside an italic blockquote, em inverts to upright per CSS default —
   keep the bronze color so the highlight still reads. */
.post-page__body blockquote em { color: var(--accent); }

/* Links */
.post-page__body a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
  transition: color 220ms var(--ease), text-decoration-color 220ms var(--ease);
}
.post-page__body a:hover {
  color: var(--accent);
  text-decoration-color: var(--accent);
}

/* Lists */
.post-page__body ul,
.post-page__body ol {
  margin: 0 0 1.1rem;
  padding-left: 1.4rem;
}
.post-page__body li { margin: 0 0 0.4rem; padding-left: 0.2rem; }
.post-page__body li::marker { color: var(--muted); }
.post-page__body ul li::marker { content: "·  "; font-size: 1.2em; }
.post-page__body ol { list-style: decimal-leading-zero; }

/* Blockquote */
.post-page__body blockquote {
  margin: 1.6rem 0;
  padding: 0.4rem 0 0.4rem 1.2rem;
  border-left: 2px solid var(--accent);
  font-style: italic;
  color: var(--ink-2);
  font-size: 1.05rem;
  line-height: 1.6;
}
.post-page__body blockquote p { margin: 0 0 0.6rem; }
.post-page__body blockquote p:last-child { margin: 0; }

/* Inline code */
.post-page__body code {
  font-family: var(--mono);
  font-size: 0.88em;
  background: var(--bg-2);
  border: 1px solid var(--rule-soft);
  padding: 0.08em 0.36em;
  border-radius: 2px;
  color: var(--ink);
}

/* Code block — extends slightly beyond column for breathing room */
.post-page__body pre {
  margin: 1.6rem -1rem;
  padding: 1rem 1.1rem;
  background: var(--bg-2);
  border-left: 2px solid var(--accent);
  border-radius: 0 2px 2px 0;
  overflow-x: auto;
  font-size: 0.86rem;
  line-height: 1.55;
  font-family: var(--mono);
  color: var(--ink);
  -webkit-font-smoothing: antialiased;
}
.post-page__body pre code {
  background: transparent;
  border: 0;
  padding: 0;
  font-size: 1em;
  color: inherit;
  border-radius: 0;
}

/* Prism — minimal forest theme */
.token.comment, .token.prolog, .token.doctype, .token.cdata { color: var(--muted); font-style: italic; }
.token.punctuation { color: var(--ink-2); }
.token.property, .token.tag, .token.boolean, .token.number, .token.constant, .token.symbol, .token.deleted { color: var(--accent); }
.token.selector, .token.attr-name, .token.string, .token.char, .token.builtin, .token.inserted { color: #5E6A2B; }
.token.atrule, .token.attr-value, .token.keyword { color: var(--accent); font-weight: 500; }
.token.function, .token.class-name { color: var(--ink); font-weight: 500; }
.token.regex, .token.important, .token.variable { color: var(--accent); }
.token.bold { font-weight: 600; }
.token.italic { font-style: italic; }

/* Horizontal rule */
.post-page__body hr {
  border: 0;
  height: 1px;
  background: var(--rule);
  margin: 2.4rem 0;
}

/* Images / figures */
.post-page__body img,
.post-page__body figure img,
.post-page__body figure svg {
  max-width: 100%;
  height: auto;
  display: block;
  margin: 1.6rem auto;
  background: var(--bg-2);
  border: 1px solid var(--rule-soft);
  border-radius: 2px;
}
.post-page__body figure {
  margin: 2rem -1rem;
  padding: 0;
}
.post-page__body figcaption {
  margin: 0.8rem auto 0;
  text-align: center;
  font-style: italic;
  color: var(--muted);
  font-size: 0.92rem;
  max-width: 36rem;
  padding: 0 1rem;
}

/* Mermaid diagrams — rendered into .mermaid inside .mermaid-figure.
   Themed via mermaid initialize() in post.js (forest tokens). */
.post-page__body .mermaid-figure {
  margin: 2rem -1rem;
  padding: 1.4rem 1rem;
  background: var(--bg-2);
  border-left: 2px solid var(--accent);
  border-radius: 0 2px 2px 0;
  overflow-x: auto;
}
.post-page__body .mermaid-figure .mermaid {
  display: flex;
  justify-content: center;
  width: 100%;
  margin: 0;
  padding: 0;
  background: transparent !important;
  border: 0 !important;
  font-family: var(--serif);
  color: var(--ink);
  min-height: 1.6rem;
}
.post-page__body .mermaid-figure .mermaid svg {
  max-width: 100%;
  height: auto;
  margin: 0 auto;
  background: transparent !important;
  border: 0 !important;
  border-radius: 0;
}
/* While Mermaid is loading, show the source as a quiet placeholder. */
.post-page__body .mermaid-figure .mermaid:not([data-processed="true"]) {
  font-family: var(--mono);
  font-size: 0.82rem;
  white-space: pre;
  text-align: left;
  color: var(--muted);
  justify-content: flex-start;
}

/* Tables */
.post-page__body table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.6rem 0;
  font-size: 0.95rem;
}
.post-page__body th, .post-page__body td {
  padding: 0.6rem 0.4rem;
  border-bottom: 1px solid var(--rule);
  text-align: left;
  vertical-align: top;
}
.post-page__body th {
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  border-bottom: 1px solid var(--ink);
}

/* Foot */
.post-page__foot {
  margin-top: clamp(3rem, 6vw, 4.5rem);
  text-align: center;
  color: var(--ink-2);
}
.post-page__foot .ornament {
  color: var(--muted);
  letter-spacing: 0.6em;
  font-size: 0.95rem;
  margin: 0 0 1rem;
}
.post-page__sig {
  margin: 0 0 1.6rem;
  font-size: 0.86rem;
}
.back--bottom {
  display: inline-block;
}

/* Error */
.post-page__error {
  padding: 2rem 0;
  color: var(--ink-2);
  border-top: 1px solid var(--rule);
}
.post-page__error a {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: var(--rule);
  text-underline-offset: 4px;
}

/* On-load fade */
.post-page { opacity: 0; transform: translateY(8px); transition: opacity 600ms var(--ease), transform 600ms var(--ease); }
.post-page.is-ready { opacity: 1; transform: none; }

@media (prefers-reduced-motion: reduce) {
  .post-page { opacity: 1; transform: none; transition: none; }
  .progress { transition: none; }
}

/* Small screens */
@media (max-width: 600px) {
  .post-page__body pre { margin-left: -0.7rem; margin-right: -0.7rem; padding: 0.9rem 1rem; }
  .post-page__body figure { margin-left: -0.7rem; margin-right: -0.7rem; }
}