/* 
   subpages.css: shared chrome for all subpages
   covers: tokens, reset, nav, article scaffold, back-to-top, footer-nav,
           skip link, focus-visible, reduced-motion
   each page's <style> block keeps only its page-specific overrides
*/

/* tokens */
:root {
  --bg:           #07091a;
  --gold:         #c4a258;
  --gold-dim:     rgba(196, 162, 88, 0.25);
  --text:         #e2ddd4;
  --text-dim:     rgba(226, 221, 212, 0.72);
  --panel:        rgba(7, 9, 26, 0.84);
  --panel-border: rgba(196, 162, 88, 0.18);
  --blue:         #78a5d2;
}

/* reset */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

/* base */
body {
  background: var(--bg);
  color: var(--text);
  font-family: 'EB Garamond', Georgia, serif;
  font-size: 19px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--gold);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

/* accessibility: focus ring  */
:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}
:focus:not(:focus-visible) { outline: none; }

/* accessibility: skip link  */
.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 9999;
  padding: 10px 20px;
  background: var(--gold);
  color: var(--bg);
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  text-decoration: none;
  letter-spacing: 0.05em;
}
.skip-link:focus { left: 0; }

/* nav  */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  padding: 22px 52px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  background: linear-gradient(to bottom, rgba(7, 9, 26, 0.92) 0%, transparent 100%);
}

.nav-name {
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  text-decoration: none;
  transition: color 0.15s;
}
.nav-name:hover { color: var(--text); text-decoration: none; }

.nav-back {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  text-decoration: none;
  border-bottom: 1px solid var(--panel-border);
  padding-bottom: 2px;
  transition: color 0.15s, border-color 0.15s;
}
.nav-back:hover {
  color: var(--gold);
  border-color: var(--gold-dim);
  text-decoration: none;
}

/* article scaffold */
.article-wrap {
  max-width: 65ch;
  margin: 0 auto;
  padding: 120px 28px 100px;
}

.article-meta {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--gold);
  margin-bottom: 18px;
}

.article-title {
  font-family: 'EB Garamond', serif;
  font-size: clamp(26px, 5vw, 40px);
  font-weight: 400;
  line-height: 1.2;
  color: var(--text);
  margin-bottom: 10px;
}

.article-byline {
  font-style: italic;
  color: var(--text-dim);
  margin-bottom: 40px;
}

.article-divider {
  border: none;
  border-top: 1px solid var(--panel-border);
  margin-bottom: 40px;
}

.article-body p {
  font-size: 20px;
  margin-bottom: 1.4em;
}

.article-body h2 {
  font-family: 'EB Garamond', serif;
  font-size: 24px;
  font-weight: 400;
  color: var(--text);
  margin: 2.4em 0 0.9em;
  letter-spacing: 0.01em;
}

/* figs */
.article-figure,
.article-body figure {
  margin: 2em 0;
  display: block;
}
.article-figure img,
.article-body figure img {
  width: 100%;
  height: auto;
  display: block;
  border: 1px solid var(--panel-border);
}
.article-figure figcaption,
.article-body figcaption {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  color: var(--text-dim);
  opacity: 0.8;
  margin-top: 12px;
  line-height: 1.5;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* footnotes */
sup a {
  color: var(--blue);
  text-decoration: none;
  font-size: 0.72em;
  vertical-align: super;
  line-height: 0;
}
sup a:hover { text-decoration: underline; }

.footnotes {
  margin-top: 3em;
  border-top: 1px solid var(--panel-border);
  padding-top: 1.5em;
}
.footnotes hr { display: none; }
.footnotes ol {
  padding-left: 1.5em;
  list-style: decimal;
}
.footnotes li {
  font-size: 13.5px;
  color: var(--text-dim);
  margin-bottom: 0.75em;
  line-height: 1.6;
}
.footnote-back {
  color: var(--blue);
  text-decoration: none;
  margin-left: 4px;
  font-size: 0.85em;
}
.footnote-back:hover { text-decoration: underline; }

/* bib */
.bibliography p {
  font-size: 15px;
  color: var(--text-dim);
  margin-bottom: 0.9em;
  line-height: 1.65;
  padding-left: 1.5em;
  text-indent: -1.5em;
}

/* footer nav */
.footer-nav {
  display: flex;
  justify-content: space-between;
  margin-top: 3em;
  padding-top: 1.5em;
  border-top: 1px solid var(--panel-border);
}

/* back to top */
#back-to-top {
  position: fixed;
  bottom: 40px;
  right: 40px;
  z-index: 300;
  width: 44px;
  height: 44px;
  background: var(--panel);
  border: 1px solid var(--panel-border);
  color: var(--gold);
  font-size: 18px;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease, border-color 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 0;
  padding: 0;
}
#back-to-top.visible {
  opacity: 1;
  pointer-events: auto;
}
#back-to-top:hover { border-color: var(--gold); }

/* download button (shared across research pages) */
.btn-download {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-top: 1em;
  padding: 11px 22px;
  font-family: 'JetBrains Mono', monospace;
  font-size: 12px;
  letter-spacing: 0.1em;
  color: var(--gold);
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid var(--gold);
  background: transparent;
  transition: background 0.2s ease, color 0.2s ease;
}
.btn-download:hover {
  background: var(--gold);
  color: var(--bg);
  text-decoration: none;
}

/* reduced motion  */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* responsive */
@media (max-width: 600px) {
  nav { padding: 18px 24px; }
  .article-wrap { padding: 90px 18px 72px; }
  #back-to-top { bottom: 20px; right: 20px; }
}