/* ============================================================
   Blog shared styles — Nasim Mahmud Nayan Portfolio
   ============================================================ */
.blog-header {
  padding-top: 120px;
  padding-bottom: clamp(40px, 6vw, 64px);
  border-bottom: 1px solid var(--line);
  max-width: 760px;
}
.blog-back {
  font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.16em; text-transform: uppercase;
  color: var(--ink-2); display: inline-flex; align-items: center; gap: 0.5rem;
  margin-bottom: 2rem; transition: color .2s;
}
.blog-back:hover { color: var(--rust); }
.blog-back::before { content: "←"; }
.blog-kicker { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 1.2rem; }
.blog-title {
  font-size: clamp(2rem, 5vw, 3.6rem); font-weight: 400; line-height: 1.08;
  letter-spacing: -0.02em; margin-bottom: 1rem; max-width: 22ch;
}
.blog-meta {
  font-family: var(--mono); font-size: 0.64rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-3); margin-bottom: 1.8rem;
}
.blog-lede {
  font-family: var(--serif); font-size: clamp(1.1rem, 2vw, 1.3rem);
  color: var(--ink-2); line-height: 1.65; padding-top: 1.6rem; border-top: 1px solid var(--line);
}
.blog-body {
  padding-block: clamp(48px, 8vw, 80px);
  max-width: 720px;
}
.blog-body p {
  font-family: var(--serif); font-size: clamp(1rem, 1.8vw, 1.12rem);
  color: var(--ink-2); line-height: 1.85; margin-bottom: 1.6rem;
}
.blog-body h2 {
  font-size: clamp(1.45rem, 3vw, 1.9rem); margin: 3rem 0 1rem; color: var(--ink);
  border-bottom: 1px solid var(--line); padding-bottom: 0.7rem;
}
.blog-body h3 {
  font-size: clamp(1.15rem, 2vw, 1.4rem); margin: 2.2rem 0 0.7rem; color: var(--ink);
}
.blog-body strong { color: var(--ink); font-weight: 600; }
.blog-body em { color: var(--rust); font-style: italic; }
.blog-body ul { margin: 0 0 1.6rem; padding: 0; list-style: none; display: flex; flex-direction: column; gap: 0.7rem; }
.blog-body li {
  position: relative; padding-left: 1.5rem; font-family: var(--serif);
  font-size: clamp(1rem, 1.8vw, 1.1rem); color: var(--ink-2); line-height: 1.7;
}
.blog-body li::before {
  content: ""; position: absolute; left: 0; top: 0.65em;
  width: 6px; height: 6px; border: 1px solid var(--rust); border-radius: 50%;
}

/* Pull quote */
.pull-quote {
  border-left: 4px solid var(--rust); padding: 1.2rem 1.6rem; margin: 2.6rem 0;
  background: var(--card); border-radius: 0 5px 5px 0;
}
.pull-quote p {
  font-family: var(--serif); font-size: clamp(1.1rem, 2vw, 1.3rem); font-style: italic;
  color: var(--ink); line-height: 1.55; margin: 0;
}
.pull-quote cite {
  display: block; margin-top: 0.6rem;
  font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-3); font-style: normal;
}

/* Stat callout row */
.stat-callout {
  display: flex; gap: 0; margin: 2.4rem 0;
  border: 1px solid var(--line); border-radius: 5px; overflow: hidden;
}
.stat-callout .sc-item {
  flex: 1; padding: 1.4rem 1rem; text-align: center;
  border-right: 1px solid var(--line);
}
.stat-callout .sc-item:last-child { border-right: none; }
.stat-callout .sc-num {
  font-family: var(--serif); font-size: 2rem; color: var(--rust); line-height: 1; display: block;
}
.stat-callout .sc-lbl {
  font-family: var(--mono); font-size: 0.56rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-3); margin-top: 0.4rem; display: block;
}

/* Article figure */
.article-fig { margin: 2.6rem 0; }
.fig-img {
  width: 100%; border: 1px solid var(--line); border-radius: 5px;
  overflow: hidden; margin-bottom: 0.7rem;
}
.fig-img img { width: 100%; display: block; object-fit: cover; }
.article-fig figcaption {
  font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-3); text-align: center;
}

/* ============================================================
   FIGURES — diagrams built in HTML/CSS so they reflow on mobile,
   inherit the design tokens, and keep labels as real text.
   ============================================================ */
.fig-frame {
  border: 1px solid var(--line); border-radius: 5px; background: var(--card);
  overflow: hidden; margin-bottom: 0.7rem;
}
.fig-head {
  display: flex; align-items: baseline; justify-content: space-between; gap: 1rem;
  padding: 0.9rem 1.3rem; border-bottom: 1px solid var(--line);
  background: var(--paper-2); flex-wrap: wrap;
}
.fig-head .ft {
  font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ink); font-weight: 500;
}
.fig-head .fn {
  font-family: var(--mono); font-size: 0.54rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-3);
}

/* --- comparison bars (class imbalance) --- */
.fig-compare {
  display: grid; grid-template-columns: 1fr auto 1fr;
  gap: clamp(0.9rem, 3vw, 1.8rem); align-items: center;
  padding: clamp(1.1rem, 3vw, 1.6rem) clamp(1rem, 3vw, 1.4rem);
}
.fig-panel { min-width: 0; }
.fig-panel > .pt {
  font-family: var(--mono); font-size: 0.56rem; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ink-3); margin-bottom: 0.9rem;
}
.fig-bar { display: grid; grid-template-columns: 1fr; gap: 0.3rem; margin-bottom: 0.9rem; }
.fig-bar:last-child { margin-bottom: 0; }
.fig-bar .bl {
  display: flex; justify-content: space-between; gap: 0.6rem;
  font-family: var(--mono); font-size: 0.56rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-2);
}
.fig-bar .bl b { color: var(--ink); font-variant-numeric: tabular-nums; }
.fig-bar .bt { height: 12px; background: var(--paper-2); border: 1px solid var(--line); position: relative; }
.fig-bar .bf { position: absolute; left: 0; top: 0; bottom: 0; background: var(--ink-3); }
.fig-bar.minor .bf { background: var(--rust); }
.fig-flip {
  font-family: var(--mono); font-size: 0.56rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--rust); text-align: center; line-height: 1.5;
}
.fig-flip .fa { display: block; font-size: 1.1rem; letter-spacing: 0; }

/* --- vertical flow with a branch (RAG pipeline) --- */
.fig-flow { padding: clamp(1.1rem, 3vw, 1.6rem) clamp(1rem, 3vw, 1.4rem); }
.fig-step { display: grid; grid-template-columns: 24px 1fr; gap: 0.9rem; position: relative; padding-bottom: 1.1rem; }
.fig-step:last-of-type { padding-bottom: 0; }
.fig-step::after {
  content: ""; position: absolute; left: 11px; top: 26px; bottom: 0; width: 1px; background: var(--line);
}
.fig-step:last-of-type::after { display: none; }
.fig-step .sn {
  font-family: var(--mono); font-size: 0.58rem; color: var(--rust);
  border: 1px solid var(--line); background: var(--paper); border-radius: 2px;
  width: 24px; height: 24px; display: flex; align-items: center; justify-content: center;
  position: relative; z-index: 1;
}
.fig-step .sb strong { display: block; font-size: 0.94rem; color: var(--ink); font-weight: 600; line-height: 1.3; }
.fig-step .sb span {
  display: block; font-family: var(--mono); font-size: 0.56rem; letter-spacing: 0.1em;
  text-transform: uppercase; color: var(--ink-3); margin-top: 0.25rem; line-height: 1.6;
}
.fig-branch { display: grid; grid-template-columns: 1fr 1fr; gap: 0.8rem; margin-top: 0.4rem; }
.fig-outcome { border: 1px solid var(--line); border-radius: 4px; padding: 0.8rem 0.9rem; background: var(--paper); }
.fig-outcome.refuse { border-left: 3px solid var(--rust); }
.fig-outcome .ol {
  font-family: var(--mono); font-size: 0.52rem; letter-spacing: 0.14em;
  text-transform: uppercase; color: var(--ink-3); margin-bottom: 0.35rem;
}
.fig-outcome strong { display: block; font-size: 0.88rem; color: var(--ink); line-height: 1.35; }
.fig-outcome.refuse strong { color: var(--rust-2); }

/* --- staged pipeline (bias axes) — mirrors the Industry timeline idiom --- */
.fig-pipeline { position: relative; padding: clamp(1.1rem, 3vw, 1.6rem) clamp(1rem, 3vw, 1.4rem); }
.fig-stage { position: relative; padding-left: 1.9rem; padding-bottom: 1.3rem; }
.fig-stage:last-child { padding-bottom: 0; }
.fig-stage::before {
  content: ""; position: absolute; left: 0; top: 0.35em;
  width: 11px; height: 11px; border-radius: 50%;
  background: var(--paper); border: 2px solid var(--rust); z-index: 1;
}
.fig-stage::after {
  content: ""; position: absolute; left: 5px; top: 1.4em; bottom: -0.2em; width: 1px; background: var(--line);
}
.fig-stage:last-child::after { display: none; }
.fig-stage .gt {
  font-family: var(--mono); font-size: 0.54rem; letter-spacing: 0.16em;
  text-transform: uppercase; color: var(--ink-3);
}
.fig-stage strong { display: block; font-size: 0.98rem; color: var(--ink); font-weight: 600; margin: 0.15rem 0 0.25rem; }
.fig-stage p {
  font-family: var(--sans) !important; font-size: 0.86rem !important; color: var(--ink-2);
  margin: 0 !important; line-height: 1.55;
}

@media (max-width: 620px) {
  .fig-compare { grid-template-columns: 1fr; }
  .fig-flip { display: flex; align-items: center; justify-content: center; gap: 0.6rem; }
  .fig-flip .fa { transform: rotate(90deg); display: inline-block; }
  .fig-branch { grid-template-columns: 1fr; }
}

/* Callout box */
.callout {
  padding: 1.3rem 1.6rem; border: 1px solid var(--rust-wash);
  background: var(--rust-wash); border-radius: 5px; margin: 2rem 0;
}
.callout p {
  font-family: var(--sans); font-size: 0.94rem; color: var(--rust-2);
  margin: 0; line-height: 1.6; font-style: normal;
}
.callout strong { color: var(--rust-2); }

/* Code-style inline highlight */
.code-inline {
  font-family: var(--mono); font-size: 0.82em; background: var(--paper-2);
  border: 1px solid var(--line); padding: 0.1em 0.35em; border-radius: 3px;
  color: var(--ink);
}

/* Article end / author */
.article-end {
  margin-top: 3rem; padding-top: 2rem; border-top: 1px solid var(--line);
  display: flex; align-items: center; gap: 1.2rem;
}
.author-photo {
  width: 52px; height: 52px; border-radius: 50%; object-fit: cover;
  border: 1px solid var(--line); flex-shrink: 0;
}
.author-info .author-name { font-weight: 600; font-size: 1rem; margin-bottom: 0.2rem; }
.author-info .author-role {
  font-family: var(--mono); font-size: 0.6rem; letter-spacing: 0.12em;
  text-transform: uppercase; color: var(--ink-3);
}