/* ============================================================
   Narrative Structures — publication stylesheet
   Body: serif (Iowan Old Style → Georgia → fallback)
   UI:   system sans
   Palette: warm off-white, deep ink, muted accent
   ============================================================ */

:root {
  --bg:        #faf8f4;
  --bg-soft:   #f3efe6;
  --ink:       #1c1a16;
  --ink-soft:  #4a463e;
  --ink-mute:  #8a8579;
  --rule:      #d9d2c3;
  --accent:    #7a3b2e;       /* warm oxide red */
  --accent-soft: #b15c4c;

  --serif: "Iowan Old Style", "Palatino Linotype", Palatino, "Book Antiqua",
           Georgia, "Times New Roman", serif;
  --sans:  -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
           "Helvetica Neue", Arial, sans-serif;

  --col:       680px;       /* text column */
  --col-wide:  1100px;      /* breakout figure */
  --col-pad:   1.4rem;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--serif);
  font-size: 19px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(122, 59, 46, 0.25);
  transition: border-color 120ms ease;
}
a:hover { border-bottom-color: var(--accent); }

/* ---------- Masthead ---------- */

.masthead {
  border-bottom: 1px solid var(--rule);
  background: var(--bg);
}
.masthead-inner {
  max-width: var(--col-wide);
  margin: 0 auto;
  padding: 1rem var(--col-pad);
}
.masthead--slim .masthead-inner {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1.2rem;
}
.masthead-title {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: 0.02em;
  color: var(--ink);
  border: none;
}
.masthead-nav {
  font-family: var(--sans);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.masthead-nav a {
  margin-left: 1.4rem;
  color: var(--ink-soft);
  border: none;
}
.masthead-nav a:hover { color: var(--accent); }

.masthead--full {
  padding: 0;
  border-bottom: 1px solid var(--rule);
}
.masthead--full .masthead-inner {
  padding: 1.6rem var(--col-pad) 3.2rem;
  text-align: center;
}
.masthead-nav--top {
  text-align: right;
  margin-bottom: 2.4rem;
}
.masthead-display {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(2.6rem, 6vw, 4.4rem);
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin: 0.4rem 0 0.6rem;
  color: var(--ink);
}
.masthead-subtitle {
  font-family: var(--serif);
  font-size: 1.1rem;
  color: var(--ink-soft);
  margin: 0 0 0.4rem;
}
.masthead-tagline {
  font-family: var(--sans);
  text-transform: uppercase;
  letter-spacing: 0.18em;
  font-size: 0.72rem;
  color: var(--ink-mute);
  margin: 0.8rem 0 0;
}

/* ---------- Landing page ---------- */

.landing {
  max-width: var(--col-wide);
  margin: 0 auto;
  padding: 3rem var(--col-pad) 4rem;
}
.positioning {
  max-width: var(--col);
  margin: 0 auto;
  font-size: 1.08rem;
  color: var(--ink-soft);
}
.positioning p { margin: 0; }

.section-head {
  font-family: var(--sans);
  font-size: 0.78rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink-mute);
  text-align: center;
  margin: 0 0 2rem;
}

.essay-tiles {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.4rem;
}
.essay-tile {
  display: block;
  padding: 1.4rem 1.4rem 1.2rem;
  background: var(--bg-soft);
  border: 1px solid var(--rule);
  border-radius: 2px;
  color: var(--ink);
  transition: transform 140ms ease, border-color 140ms ease;
}
.essay-tile:hover {
  border-color: var(--accent-soft);
  transform: translateY(-2px);
}
.essay-tile-title {
  font-family: var(--serif);
  font-size: 1.3rem;
  line-height: 1.2;
  margin: 0 0 0.4rem;
  color: var(--ink);
}
.essay-tile-sub {
  font-family: var(--serif);
  font-style: italic;
  color: var(--ink-soft);
  margin: 0 0 0.8rem;
  font-size: 0.98rem;
}
.essay-tile-meta {
  font-family: var(--sans);
  font-size: 0.74rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 0;
}
.essay-tiles-empty {
  text-align: center;
  font-style: italic;
  color: var(--ink-mute);
  padding: 2rem 0;
}

/* ---------- Essay page ---------- */

.essay {
  max-width: var(--col-wide);
  margin: 0 auto;
  padding: 3rem var(--col-pad) 4rem;
}
.essay-head {
  max-width: var(--col);
  margin: 0 auto 2.4rem;
  text-align: center;
}
.essay-title {
  font-family: var(--serif);
  font-weight: 700;
  font-size: clamp(2rem, 4vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -0.005em;
  margin: 0 0 0.6rem;
}
.essay-subtitle {
  font-family: var(--serif);
  font-style: italic;
  font-size: 1.2rem;
  color: var(--ink-soft);
  margin: 0 0 1.2rem;
}
.essay-meta {
  font-family: var(--sans);
  font-size: 0.74rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-mute);
  margin: 0;
}
.essay-meta-author { margin-left: 0.8rem; }

.essay-body {
  max-width: var(--col);
  margin: 0 auto;
}
.essay-body > p,
.essay-body > h2,
.essay-body > h3,
.essay-body > h4,
.essay-body > ul,
.essay-body > ol,
.essay-body > blockquote,
.essay-body > pre,
.essay-body > hr,
.essay-body > .footnote {
  max-width: var(--col);
  margin-left: auto;
  margin-right: auto;
}

.essay-body p {
  margin: 0 0 1.1rem;
}
.essay-body > p:first-of-type::first-letter {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 4.2em;
  line-height: 0.86;
  float: left;
  margin: 0.05em 0.12em 0 -0.04em;
  color: var(--ink);
}

.essay-body h2 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.55rem;
  margin: 2.6rem 0 0.9rem;
  letter-spacing: -0.005em;
}
.essay-body h3 {
  font-family: var(--serif);
  font-weight: 700;
  font-size: 1.2rem;
  margin: 2rem 0 0.7rem;
}

.essay-body blockquote {
  font-style: italic;
  border-left: 2px solid var(--accent-soft);
  padding-left: 1.2rem;
  color: var(--ink-soft);
  margin: 1.6rem 0;
}
.essay-body pre,
.essay-body code {
  font-family: "SF Mono", Menlo, Consolas, monospace;
  font-size: 0.88em;
}
.essay-body pre {
  background: var(--bg-soft);
  padding: 1rem 1.2rem;
  overflow-x: auto;
  border-radius: 2px;
}
.essay-body hr {
  border: none;
  border-top: 1px solid var(--rule);
  margin: 2.4rem auto;
  width: 40%;
}

/* ornament */
.ornament {
  text-align: center;
  font-size: 1.4rem;
  color: var(--ink-mute);
  letter-spacing: 0.4em;
  margin: 2.4rem 0;
  user-select: none;
}

/* ---------- Figures ---------- */

.essay-body .figure,
.essay .figure {
  margin: 2.2rem auto;
  max-width: var(--col);
}
.figure.wide {
  max-width: var(--col-wide);
  width: 100%;
}
.figure.full {
  max-width: none;
  width: 100vw;
  position: relative;
  left: 50%;
  margin-left: -50vw;
  margin-right: -50vw;
}
.figure-svg {
  display: block;
  width: 100%;
}
.figure-svg svg {
  width: 100%;
  height: auto;
  display: block;
}
.figure-iframe {
  width: 100%;
  min-height: 540px;
  border: 1px solid var(--rule);
  background: var(--bg);
  display: block;
}
.figure.wide .figure-iframe { min-height: 760px; }
.figure.full .figure-iframe { min-height: 86vh; border-left: none; border-right: none; }

.figure figcaption {
  font-family: var(--serif);
  font-style: italic;
  font-size: 0.92rem;
  color: var(--ink-soft);
  margin-top: 0.7rem;
  padding: 0 var(--col-pad);
  text-align: center;
}
.figure.full figcaption {
  max-width: var(--col);
  margin-left: auto;
  margin-right: auto;
}
.figure-missing {
  background: var(--bg-soft);
  color: var(--accent);
  padding: 1.2rem;
  font-family: var(--sans);
  font-size: 0.9rem;
  text-align: center;
  border: 1px dashed var(--accent-soft);
}

/* ---------- Scrollytelling (CSS only; JS hook to be added later) ---------- */

.scrolly {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.6rem;
  margin: 2.6rem auto;
  max-width: var(--col-wide);
}
@media (min-width: 960px) {
  .scrolly {
    grid-template-columns: 1fr 1fr;
    gap: 2.4rem;
  }
}
.sticky-figure {
  position: sticky;
  top: 1.2rem;
  align-self: start;
}
.scroll-prose {
  max-width: var(--col);
}
.scroll-prose > p { margin-bottom: 1.4rem; }

/* ---------- Footnotes ---------- */

.footnote,
.footnote ol {
  font-size: 0.88rem;
  color: var(--ink-soft);
}
.footnote {
  border-top: 1px solid var(--rule);
  padding-top: 1.4rem;
  margin-top: 3rem;
}
.footnote-ref,
.footnote-backref {
  font-family: var(--sans);
  font-size: 0.7em;
  vertical-align: super;
  border: none;
}

/* ---------- Page-specific (about, methodology) ---------- */

.page {
  max-width: var(--col);
  margin: 0 auto;
  padding: 3rem var(--col-pad) 4rem;
}
.page h1 {
  font-family: var(--serif);
  font-size: clamp(1.9rem, 3.6vw, 2.8rem);
  margin: 0 0 1.6rem;
}
.page h2 {
  font-family: var(--serif);
  font-size: 1.4rem;
  margin: 2.4rem 0 0.8rem;
}
.page p { margin: 0 0 1.1rem; }

/* ---------- Colophon ---------- */

.colophon {
  border-top: 1px solid var(--rule);
  margin-top: 4rem;
  padding: 1.8rem 0 2.4rem;
  font-family: var(--sans);
  font-size: 0.78rem;
  color: var(--ink-mute);
  text-align: center;
}
.colophon p { margin: 0.2rem 0; }
.colophon-fine { font-size: 0.72rem; }
.colophon a { color: var(--ink-mute); border: none; }
.colophon a:hover { color: var(--accent); }

/* ---------- Responsive ---------- */

@media (max-width: 720px) {
  html, body { font-size: 17px; }
  .masthead--slim .masthead-inner { flex-direction: column; align-items: flex-start; gap: 0.4rem; }
  .masthead-nav a { margin-left: 0; margin-right: 1rem; }
  .essay-body > p:first-of-type::first-letter {
    font-size: 3.4em;
  }
  .figure.wide,
  .figure.full {
    width: 100%;
    max-width: var(--col);
    left: 0;
    margin-left: auto;
    margin-right: auto;
  }
}