/**
 * deep-journal.css
 * Engineering journal — long-form, calm, editorial.
 * Tone: technical publication, not marketing blog.
 */

/* ── Layout ──────────────────────────────────────────── */
body.journal-page {
  background: #ffffff;
}

.journal-main {
  padding-top: calc(var(--nav-h) + var(--s5));
  padding-bottom: var(--s12);
}

/* ── Index hero ───────────────────────────────────────── *
 * Tight, intentional rhythm so the masthead no longer leaves a large
 * empty band between the nav and the first article. */
.journal-hero {
  max-width: var(--container-max, 1480px);
  margin: 0 auto;
  padding: clamp(1.25rem, 3vw, 2.25rem) var(--sec-px) clamp(1.75rem, 3.5vw, 2.75rem);
}

.journal-hero-eyebrow {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 var(--s4);
}

.journal-hero-title {
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: clamp(2.75rem, 7vw, 4.75rem);
  font-weight: 800;
  letter-spacing: -0.045em;
  line-height: 0.98;
  color: var(--text-0);
  margin: 0 0 var(--s5);
}

.journal-hero-lead {
  font-size: clamp(1.05rem, 1.6vw, 1.22rem);
  line-height: 1.6;
  color: var(--text-1);
  font-weight: 300;
  margin: 0;
  max-width: 46rem;
}

/* ── Toolbar: topic filters + search ──────────────────── *
 * Sticks just under the fixed nav (docs/publication pattern). */
.journal-toolbar {
  position: sticky;
  top: var(--nav-h);
  z-index: 5;
  max-width: var(--container-max, 1480px);
  margin: 0 auto;
  padding: var(--s4) var(--sec-px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s5);
  flex-wrap: wrap;
  background: rgba(255, 255, 255, 0.86);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.journal-filters {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s2);
}

.journal-filter {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 7px 14px;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: transparent;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.74rem;
  letter-spacing: 0.02em;
  color: var(--text-2);
  cursor: pointer;
  transition: color 200ms ease, border-color 200ms ease, background 200ms ease;
}

.journal-filter:hover {
  color: var(--text-0);
  border-color: var(--border-hover, rgba(24, 24, 27, 0.16));
}

.journal-filter.is-active {
  color: #fff;
  background: var(--accent);
  border-color: var(--accent);
}

.journal-filter-count {
  font-size: 0.66rem;
  opacity: 0.7;
}

.journal-search {
  position: relative;
  display: flex;
  align-items: center;
  min-width: min(16rem, 100%);
}

.journal-search-icon {
  position: absolute;
  left: 12px;
  width: 15px;
  height: 15px;
  fill: none;
  stroke: var(--text-3);
  stroke-width: 2;
  stroke-linecap: round;
  pointer-events: none;
}

.journal-search-input {
  width: 100%;
  padding: 9px 14px 9px 34px;
  border-radius: 100px;
  border: 1px solid var(--border);
  background: var(--bg-1, #fff);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.78rem;
  color: var(--text-0);
  transition: border-color 200ms ease;
}

.journal-search-input::placeholder {
  color: var(--text-3);
}

.journal-search-input:focus {
  outline: none;
  border-color: var(--accent);
}

/* ── Featured article ─────────────────────────────────── */
.journal-featured {
  max-width: var(--container-max, 1480px);
  margin: 0 auto;
  padding: clamp(2.5rem, 5vw, 4rem) var(--sec-px);
  border-bottom: 1px solid var(--border);
}

.journal-feature-link {
  display: block;
  text-decoration: none;
  color: inherit;
  max-width: 52rem;
}

.journal-feature-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s3);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: var(--s4);
}

.journal-feature-meta .type {
  color: var(--accent);
  font-weight: 600;
}

.journal-feature-flag {
  padding: 3px 10px;
  border-radius: 100px;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  letter-spacing: 0.08em;
}

.journal-feature-title {
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: clamp(1.8rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.05;
  color: var(--text-0);
  margin: 0 0 var(--s4);
  transition: color 200ms ease;
}

.journal-feature-link:hover .journal-feature-title {
  color: var(--accent);
}

.journal-feature-deck {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  line-height: 1.6;
  color: var(--text-1);
  font-weight: 300;
  margin: 0 0 var(--s5);
  max-width: 44rem;
}

.journal-feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  margin: 0 0 var(--s5);
  padding: 0;
}

.journal-feature-tags li {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.66rem;
  letter-spacing: 0.04em;
  padding: 3px 9px;
  border-radius: 100px;
  border: 1px solid var(--border);
  color: var(--text-2);
}

.journal-feature-cta {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--text-0);
  font-weight: 500;
}

.journal-feature-cta svg {
  width: 15px;
  height: 15px;
  fill: none;
  stroke: currentColor;
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
  transition: transform 220ms ease;
}

.journal-feature-link:hover .journal-feature-cta {
  color: var(--accent);
}

.journal-feature-link:hover .journal-feature-cta svg {
  transform: translateX(4px);
}

/* ── Recent list ──────────────────────────────────────── */
.journal-recent {
  max-width: var(--container-max, 1480px);
  margin: 0 auto;
  padding: clamp(2.5rem, 5vw, 3.5rem) var(--sec-px) 0;
}

.journal-recent-head {
  margin-bottom: var(--s7);
}

.journal-recent-kicker {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
  margin: 0 0 var(--s2);
}

.journal-recent-title {
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: clamp(1.5rem, 3vw, 1.85rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.12;
  color: var(--text-0);
  margin: 0;
}

.journal-empty {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.82rem;
  color: var(--text-3);
  padding: var(--s8) 0;
  margin: 0;
  text-align: center;
}

/* ── Section groups (Essays / Notes / Recoveries) ───── */
.journal-section {
  max-width: var(--container-max, 1480px);
  margin: 0 auto;
  padding: clamp(3rem, 6vw, 4.5rem) var(--sec-px);
  border-bottom: 1px solid var(--border);
}

.journal-section:last-of-type {
  border-bottom: none;
}

.journal-section-head {
  display: grid;
  grid-template-columns: minmax(0, 14rem) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 5rem);
  margin-bottom: var(--s8);
  align-items: baseline;
}

.journal-section-kicker {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
  margin: 0 0 var(--s2);
}

.journal-section-title {
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: clamp(1.5rem, 3vw, 1.85rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.12;
  color: var(--text-0);
  margin: 0;
}

.journal-section-desc {
  font-size: 0.92rem;
  line-height: 1.65;
  color: var(--text-1);
  font-weight: 300;
  margin: 0;
  max-width: 38rem;
}

/* ── Post index list ─────────────────────────────────── */
.journal-list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.journal-entry {
  display: grid;
  grid-template-columns: minmax(0, 14rem) minmax(0, 1fr);
  gap: clamp(2rem, 5vw, 5rem);
  padding: var(--s6) 0;
  border-top: 1px solid var(--border);
  align-items: start;
}

.journal-entry:first-child {
  border-top: none;
  padding-top: 0;
}

.journal-entry-meta {
  display: flex;
  flex-direction: column;
  gap: 6px;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--text-3);
}

.journal-entry-date {
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.journal-entry-type {
  color: var(--accent);
  font-weight: 600;
}

.journal-entry-read {
  color: var(--text-3);
}

.journal-entry-body {
  display: block;
  text-decoration: none;
  color: inherit;
}

.journal-entry-title {
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: clamp(1.2rem, 2.4vw, 1.4rem);
  font-weight: 700;
  letter-spacing: -0.025em;
  line-height: 1.2;
  color: var(--text-0);
  margin: 0 0 var(--s2);
  transition: color var(--t-base, 200ms) var(--ease-out-soft, ease);
}

.journal-entry-body:hover .journal-entry-title {
  color: var(--accent);
}

.journal-entry-excerpt {
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--text-1);
  font-weight: 300;
  margin: 0 0 var(--s3);
  max-width: 40rem;
}

.journal-entry-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.journal-entry-tags li {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.66rem;
  letter-spacing: 0.04em;
  padding: 3px 9px;
  border-radius: 100px;
  border: 1px solid var(--border);
  color: var(--text-2);
}

/* ── Post page ───────────────────────────────────────── */
.journal-post-main {
  padding-top: calc(var(--nav-h) + var(--s8));
  padding-bottom: var(--s12);
  background: #ffffff;
}

.journal-post {
  max-width: 40rem;
  margin: 0 auto;
  padding: 0 var(--sec-px);
}

.journal-post-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  color: var(--text-3);
  text-decoration: none;
  margin-bottom: var(--s6);
  transition: color var(--t-base, 200ms) var(--ease-out-soft, ease);
}

.journal-post-back:hover {
  color: var(--text-0);
}

.journal-post-header {
  margin-bottom: clamp(2.5rem, 5vw, 3.5rem);
}

.journal-post-meta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s4);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: var(--s5);
}

.journal-post-meta .type {
  color: var(--accent);
  font-weight: 600;
}

.journal-post-title {
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: clamp(2rem, 4.6vw, 2.85rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.06;
  color: var(--text-0);
  margin: 0 0 var(--s5);
}

.journal-post-deck {
  font-size: clamp(1.05rem, 2vw, 1.18rem);
  line-height: 1.55;
  color: var(--text-1);
  font-weight: 300;
  font-style: italic;
  margin: 0;
  border-left: 2px solid var(--border);
  padding-left: var(--s5);
  max-width: 36rem;
}

/* ── Prose body ──────────────────────────────────────── */
.journal-prose {
  font-size: 1.025rem;
  line-height: 1.78;
  color: var(--text-1);
  font-weight: 300;
}

.journal-prose p {
  margin: 0 0 var(--s5);
}

.journal-prose p:first-of-type::first-letter {
  font-family: "Bricolage Grotesque", sans-serif;
  font-weight: 700;
  font-size: 3.6rem;
  line-height: 0.85;
  float: left;
  margin: 0.3rem 0.6rem 0 0;
  color: var(--text-0);
}

.journal-prose h2 {
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.18;
  color: var(--text-0);
  margin: clamp(2.5rem, 5vw, 3rem) 0 var(--s4);
}

.journal-prose h3 {
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: 1.18rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--text-0);
  margin: var(--s7) 0 var(--s3);
}

.journal-prose ul,
.journal-prose ol {
  margin: 0 0 var(--s5);
  padding-left: 1.4rem;
}

.journal-prose li {
  margin-bottom: 0.45rem;
}

.journal-prose strong {
  color: var(--text-0);
  font-weight: 600;
}

.journal-prose a {
  color: var(--accent);
  text-decoration: none;
  background-image: linear-gradient(currentColor, currentColor);
  background-size: 100% 1px;
  background-repeat: no-repeat;
  background-position: 0 100%;
  transition: background-size 320ms cubic-bezier(0.32, 0.72, 0, 1);
}

.journal-prose a:hover {
  background-size: 0 1px;
  background-position: 100% 100%;
}

.journal-prose blockquote {
  margin: var(--s7) 0;
  padding: 0 0 0 var(--s5);
  border-left: 2px solid var(--accent);
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: 1.3rem;
  font-weight: 400;
  font-style: italic;
  letter-spacing: -0.02em;
  line-height: 1.4;
  color: var(--text-0);
}

.journal-prose blockquote p {
  margin-bottom: var(--s2);
}

.journal-prose blockquote cite {
  display: block;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  font-style: normal;
  letter-spacing: 0.06em;
  color: var(--text-3);
}

/* ── Code blocks ─────────────────────────────────────── */
.journal-prose code,
.journal-prose .code-inline {
  font-family: "JetBrains Mono", "Fira Code", monospace;
  font-size: 0.88em;
  background: #f5f5f4;
  padding: 1px 6px;
  border-radius: 4px;
  color: var(--text-0);
  border: 1px solid var(--border);
}

.journal-prose pre {
  margin: var(--s5) 0;
  padding: var(--s4);
  background: #fafafa;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow-x: auto;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.82rem;
  line-height: 1.55;
  color: var(--text-0);
}

.journal-prose pre code {
  padding: 0;
  background: transparent;
  border: none;
  font-size: inherit;
  color: inherit;
}

/* ── Callouts ────────────────────────────────────────── */
.journal-callout {
  margin: var(--s6) 0;
  padding: var(--s5);
  background: #fafafa;
  border: 1px solid var(--border);
  border-left: 2px solid var(--accent);
  border-radius: 4px;
}

.journal-callout-label {
  display: block;
  font-family: "JetBrains Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: var(--s2);
}

.journal-callout p {
  margin: 0;
  font-size: 0.95rem;
  line-height: 1.65;
  color: var(--text-1);
}

/* ── Aside metric / measurement ──────────────────────── */
.journal-measurement {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(8rem, 1fr));
  gap: 0;
  margin: var(--s7) 0;
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  overflow: hidden;
  background: #ffffff;
}

.journal-measurement > div {
  padding: var(--s4);
  border-right: 1px solid var(--border);
}

.journal-measurement > div:last-child {
  border-right: none;
}

.journal-measurement dt {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.66rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: 6px;
}

.journal-measurement dd {
  margin: 0;
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.025em;
  color: var(--text-0);
  line-height: 1.1;
}

/* ── Post footer / sign-off ──────────────────────────── */
.journal-post-foot {
  margin-top: clamp(3rem, 6vw, 4rem);
  padding-top: var(--s6);
  border-top: 1px solid var(--border);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  color: var(--text-3);
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: var(--s4);
}

.journal-post-foot a {
  color: var(--text-2);
  text-decoration: none;
}

.journal-post-foot a:hover {
  color: var(--accent);
}

/* ── More-from-journal at bottom ─────────────────────── */
.journal-more {
  max-width: var(--container-max, 1480px);
  margin: clamp(4rem, 7vw, 5.5rem) auto 0;
  padding: clamp(3rem, 5vw, 4rem) var(--sec-px) 0;
  border-top: 1px solid var(--border);
}

.journal-more-label {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-3);
  margin: 0 0 var(--s5);
}

.journal-more-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: var(--s5);
}

.journal-more-grid a {
  display: block;
  padding: var(--s4) 0;
  border-top: 1px solid var(--border);
  text-decoration: none;
  color: inherit;
  transition: color 220ms cubic-bezier(0.22, 0.61, 0.36, 1);
}

.journal-more-grid a strong {
  display: block;
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-0);
  margin-bottom: 4px;
}

.journal-more-grid a span {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  color: var(--text-3);
}

.journal-more-grid a:hover strong {
  color: var(--accent);
}

/* ── Homepage teaser block ───────────────────────────── */
.home-journal {
  padding: clamp(4rem, 7vw, 5.5rem) 0;
  border-top: 1px solid var(--border);
  background: #ffffff;
}

.home-journal-head {
  display: flex;
  justify-content: space-between;
  align-items: end;
  gap: var(--s5);
  margin-bottom: var(--s8);
  flex-wrap: wrap;
}

.home-journal-head h2 {
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: clamp(1.65rem, 3.4vw, 2.2rem);
  font-weight: 800;
  letter-spacing: -0.035em;
  line-height: 1.1;
  margin: var(--s2) 0 0;
  color: var(--text-0);
}

.home-journal-head h2 em {
  font-style: italic;
  font-weight: 400;
  color: var(--accent);
}

.home-journal-link {
  font-family: "JetBrains Mono", monospace;
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  color: var(--text-2);
  text-decoration: none;
  border-bottom: 1px solid var(--border);
  padding-bottom: 4px;
  transition: color 220ms ease, border-color 220ms ease;
}

.home-journal-link:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.home-journal-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(18rem, 1fr));
  gap: var(--s6);
}

.home-journal-card {
  display: block;
  text-decoration: none;
  color: inherit;
  padding: 0;
  border-top: 1px solid var(--border);
  padding-top: var(--s5);
}

.home-journal-card .meta {
  display: flex;
  gap: var(--s3);
  font-family: "JetBrains Mono", monospace;
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  color: var(--text-3);
  margin-bottom: var(--s3);
}

.home-journal-card .meta .type {
  color: var(--accent);
  font-weight: 600;
  text-transform: uppercase;
}

.home-journal-card h3 {
  font-family: "Bricolage Grotesque", sans-serif;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
  color: var(--text-0);
  margin: 0 0 var(--s2);
  transition: color 220ms ease;
}

.home-journal-card:hover h3 {
  color: var(--accent);
}

.home-journal-card p {
  font-size: 0.92rem;
  line-height: 1.62;
  color: var(--text-1);
  font-weight: 300;
  margin: 0;
}

/* ── Responsive ──────────────────────────────────────── */
@media (max-width: 899px) {
  .journal-section-head,
  .journal-entry {
    grid-template-columns: 1fr;
    gap: var(--s4);
  }
  .journal-entry-meta {
    flex-direction: row;
    gap: var(--s3);
  }
  /* Toolbar stacks and stops pinning so it doesn't crowd small screens. */
  .journal-toolbar {
    position: static;
    flex-direction: column;
    align-items: stretch;
    gap: var(--s3);
  }
  .journal-search {
    min-width: 0;
    width: 100%;
  }
  .journal-prose p:first-of-type::first-letter {
    font-size: 2.6rem;
  }
}