/* Robbie Stephens — operator's notebook */

:root {
  --bg: #f1efea;
  --bg-deep: #e5e2da;
  --ink: #1f2420;
  --ink-soft: #4f5650;
  --ink-faint: #555c55;
  --line: #d4d0c7;
  --accent: #3f5248;
  --accent-soft: #9aab9f;
  --link: #3a4a42;
  --font-serif: "Source Serif 4", "Times New Roman", serif;
  --font-sans: "Source Sans 3", "Segoe UI", sans-serif;
  --max: 720px;
  --max-wide: 1040px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --radius: 0;
}

h1,
h2,
h3,
.logo {
  font-variant-ligatures: none;
  font-feature-settings: "liga" 0, "clig" 0;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 4.5rem;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-sans);
  font-size: 1.05rem;
  font-weight: 400;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--link);
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
  transition: color 0.2s var(--ease);
}

a:hover {
  color: var(--ink);
}

:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

/* Older engines without :focus-visible still need a visible ring. */
@supports not selector(:focus-visible) {
  :focus {
    outline: 2px solid var(--accent);
    outline-offset: 3px;
  }
}

.sr-only:focus,
.sr-only:focus-visible,
a.sr-only:focus {
  position: fixed;
  top: 0.75rem;
  left: 0.75rem;
  z-index: 100;
  width: auto;
  height: auto;
  margin: 0;
  padding: 0.65rem 0.9rem;
  overflow: visible;
  clip: auto;
  background: var(--ink);
  color: var(--bg);
  border-radius: 0;
  outline: none;
}

img {
  max-width: 100%;
  display: block;
}

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

.wrap {
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

/* —— Nav —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: var(--bg);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
}

.logo[aria-current="page"] {
  color: var(--ink);
}

.nav-inner {
  width: min(100% - 2.5rem, var(--max));
  margin: 0 auto;
  min-height: 3.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 500;
  color: var(--ink);
  text-decoration: none;
  letter-spacing: -0.02em;
  white-space: nowrap;
  flex-shrink: 0;
}

.logo:hover {
  color: var(--ink);
}

.nav-links {
  display: flex;
  flex-wrap: nowrap;
  justify-content: flex-end;
  align-items: center;
  gap: 0.2rem 1.15rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.nav-links a {
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--ink-soft);
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--ink);
}

.nav-links a[aria-current="page"] {
  font-weight: 600;
}

/* —— Home intro —— */
.intro {
  padding: 3.25rem 0 2.25rem;
}

.intro-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 140px;
  gap: 1.5rem 2rem;
  align-items: start;
  width: min(100% - 2.5rem, var(--max));
  margin-inline: auto;
}

.intro .portrait {
  width: 140px;
  max-width: 140px;
  min-width: 0;
  margin: 0;
  overflow: hidden;
}

.intro .portrait picture,
.intro .portrait img {
  display: block;
  width: 100%;
  max-width: 100%;
  height: auto;
}

.intro .portrait img {
  position: static;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  object-position: center top;
}

.intro-copy {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  min-width: 0;
  padding-top: 0.1rem;
}

.kicker {
  margin: 0 0 1rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
}

.intro h1 {
  margin: 0 0 1rem -0.08em;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(1.75rem, 3vw, 2.2rem);
  line-height: 1.2;
  letter-spacing: -0.03em;
  max-width: none;
  white-space: nowrap;
}

.intro-lede {
  margin: 0;
  color: var(--ink-soft);
  font-size: 1.02rem;
  line-height: 1.65;
  max-width: 38rem;
}

.intro-lede + .intro-lede {
  margin-top: 0.85rem;
}

.section-themes {
  padding-top: 0.25rem;
  padding-bottom: 3.5rem;
}

.interest-label {
  margin: 0 0 0.65rem;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
  line-height: 1.4;
}

.interest-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0;
  border-top: 1px solid var(--line);
}

.interest-list li {
  border-bottom: 1px solid var(--line);
}

.interest-list a {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.85rem 0;
  text-decoration: none;
  color: inherit;
  transition: color 0.2s var(--ease);
}

.interest-list a:hover .interest-topic,
.interest-list a:hover .interest-how {
  color: var(--accent);
}

.interest-topic {
  font-size: 1.02rem;
  font-weight: 600;
  color: var(--ink);
  line-height: 1.35;
}

.interest-how {
  font-size: 0.95rem;
  color: var(--ink-soft);
  line-height: 1.5;
  max-width: 40rem;
}

.portrait {
  margin: 0;
  width: 100%;
}

.portrait img {
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  object-position: center top;
  border-radius: 0;
  border: 1px solid var(--line);
  background: var(--bg-deep);
}

.portrait figcaption {
  margin-top: 0.55rem;
  font-size: 0.78rem;
  color: var(--ink-faint);
  letter-spacing: 0.02em;
}

/* —— Sections —— */
.section {
  padding: 2.75rem 0 3.5rem;
}

.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.section-link {
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--accent);
  white-space: nowrap;
}

.section-link:hover {
  color: var(--ink);
}

.section-note {
  margin: -0.35rem 0 1.5rem;
  max-width: 34rem;
  color: var(--ink-faint);
  font-size: 0.95rem;
}

/* —— Where to begin (hairline index) —— */
.section-head--index {
  align-items: baseline;
  margin-bottom: 0.35rem;
}

.section-label {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.start-list {
  margin: 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line);
}

.start-list li {
  border-bottom: 1px solid var(--line);
}

.start-list a {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.95rem 0;
  text-decoration: none;
  color: inherit;
  transition: color 0.2s var(--ease);
}

.start-list a:hover .topic,
.start-list a:hover .how {
  color: var(--accent);
}

.start-list .meta {
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.start-list .topic {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 600;
  line-height: 1.3;
  color: var(--ink);
  letter-spacing: -0.015em;
}

.start-list .how {
  color: var(--ink-soft);
  font-size: 0.95rem;
  line-height: 1.5;
  max-width: 40rem;
}

/* —— Listing pages —— */
.page-hero {
  padding: 3rem 0 1.5rem;
}

.page-hero h1 {
  margin: 0 0 0.75rem -0.08em;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(2rem, 4.5vw, 2.6rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.page-hero p {
  margin: 0;
  max-width: 36rem;
  color: var(--ink-soft);
}

.list {
  display: flex;
  flex-direction: column;
  gap: 0;
  padding-bottom: 4rem;
}

.list-item {
  display: block;
  padding: 1.5rem 0;
  border-top: 1px solid var(--line);
  text-decoration: none;
  color: inherit;
}

.list-item:last-child {
  border-bottom: 1px solid var(--line);
}

.list-item:hover h2,
.list-item:hover h3 {
  color: var(--accent);
}

.list-item .meta {
  margin: 0 0 0.45rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.list-item h2,
.list-item h3 {
  margin: 0 0 0.45rem;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  transition: color 0.2s var(--ease);
}

.list-item p {
  margin: 0;
  max-width: 38rem;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

.lab-list {
  margin: 0;
  padding: 0 0 4rem;
  list-style: none;
  border-top: 1px solid var(--line);
}

.lab-list li {
  border-bottom: 1px solid var(--line);
}

.lab-list .lab-item {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.95rem 0;
}

.lab-list .meta {
  margin: 0;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.lab-list h2 {
  margin: 0;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.15rem;
  color: var(--ink);
}

.lab-list p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--ink-soft);
  max-width: 40rem;
}

/* —— About —— */
.about-layout {
  display: grid;
  grid-template-columns: minmax(200px, 260px) minmax(0, 1.15fr);
  gap: 1.75rem 2.25rem;
  width: min(100% - 2.5rem, 860px);
  margin-inline: auto;
  padding-bottom: 4rem;
  align-items: start;
}

.about-layout--page {
  padding-top: 3rem;
}

.about-copy h1 {
  margin: 0 0 1.15rem -0.08em;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(2rem, 4.5vw, 2.6rem);
  letter-spacing: -0.03em;
  line-height: 1.15;
}

.about-layout .portrait {
  margin: 0;
  width: 100%;
  max-width: none;
  height: auto;
  min-height: 0;
}

.about-layout .portrait img {
  position: static;
  width: 100%;
  height: auto;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.about-copy p {
  margin: 0 0 1.1rem;
  color: var(--ink-soft);
  max-width: 38rem;
}

.about-copy p:last-child {
  margin-bottom: 0;
}

/* —— Article —— */
.article {
  width: min(100% - 2.5rem, 640px);
  margin: 0 auto;
  padding: 2.75rem 0 4.5rem;
}

.back-link {
  display: inline-block;
  margin-bottom: 1.25rem;
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  color: var(--accent);
}

.article-meta {
  margin: 0 0 0.85rem;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
}

.article h1 {
  margin: 0 0 1.15rem -0.08em;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: clamp(1.85rem, 4vw, 2.4rem);
  letter-spacing: -0.03em;
  line-height: 1.2;
}

.article .lede {
  margin: 0 0 1.6rem;
  color: var(--ink-soft);
  font-size: 1.12rem;
  line-height: 1.65;
}

.article h2 {
  margin: 2rem 0 0.7rem;
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 1.3rem;
}

.article p {
  margin: 0 0 1.1rem;
  color: var(--ink);
  line-height: 1.75;
}

.article ul,
.article ol {
  margin: 0 0 1.25rem;
  padding-left: 1.25rem;
  color: var(--ink);
}

.article li {
  margin: 0 0 0.45rem;
  line-height: 1.65;
}

.article li:last-child {
  margin-bottom: 0;
}

.article .note {
  color: var(--ink-faint);
  font-size: 0.92rem;
}

.related {
  margin: 2.5rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--line);
}

.related-label {
  margin: 0 0 0.45rem;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.related p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.98rem;
  line-height: 1.6;
}

/* —— Footer —— */
.site-footer {
  border-top: 1px solid var(--line);
  padding: 1.75rem 0 2.25rem;
}

.footer-inner {
  width: min(100% - 2.5rem, var(--max));
  margin: 0 auto;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem 1.25rem;
  font-size: 0.88rem;
  color: var(--ink-faint);
}

.footer-inner a {
  color: var(--ink-soft);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

.footer-inner a:hover {
  color: var(--ink);
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.1rem;
}

/* —— Motion —— */
@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
}

@media (max-width: 800px) {
  .intro-grid,
  .about-layout {
    grid-template-columns: 1fr;
    width: min(100% - 1.5rem, var(--max));
  }

  .intro-grid {
    grid-template-columns: 1fr;
  }

  .intro h1 {
    white-space: normal;
  }

  /* Portrait first on small screens; text | photo on desktop. */
  .intro .portrait {
    order: -1;
    width: 120px;
    max-width: 120px;
  }

  .intro-copy {
    min-height: 0;
  }

  .about-layout .portrait {
    max-width: 220px;
  }
}

@media (max-width: 560px) {
  .wrap,
  .nav-inner,
  .footer-inner,
  .intro-grid,
  .article {
    width: min(100% - 1.5rem, var(--max));
  }

  .nav-inner {
    flex-wrap: wrap;
    align-items: baseline;
    row-gap: 0.45rem;
    min-height: 0;
    padding: 0.85rem 0;
  }

  /* If the row is tight, drop the whole link group — not a single orphan link */
  .nav-links {
    flex: 1 1 auto;
    flex-wrap: nowrap;
    justify-content: flex-start;
    gap: 0.85rem;
    min-width: min(100%, 17.5rem);
  }

  .nav-links a {
    font-size: 0.88rem;
    white-space: nowrap;
  }
}