/* Per-paper landing page — chrome + article-body styles.
   Used by /writings/papers/<slug>/index.html files. */

:root{
  --bg:        #1A1124;
  --surface:   #251A38;
  --surface-2: #2A1E40;
  --line:      #3B2C55;
  --line-soft: #2F2247;
  --text:      #D4C282;
  --text-2:    #9A8DB4;
  --text-3:    #7A6E96;
  --accent:    #D4C282;
  --accent-ink:#1A1124;
  --r:   10px;
  --r-sm: 7px;
  --mono: ui-monospace, "SF Mono", "JetBrains Mono", Menlo, monospace;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
*{ box-sizing:border-box; margin:0; padding:0; }
html{ -webkit-text-size-adjust:100%; scroll-padding-top:96px; }
body{
  background:var(--bg);
  color:var(--text);
  font-family:var(--sans);
  font-size:15px; line-height:1.55; letter-spacing:.005em;
  min-height:100vh; display:flex; flex-direction:column;
  background-image:
    radial-gradient(120% 80% at 50% -10%, rgba(212,194,130,.06), transparent 60%),
    linear-gradient(var(--line-soft) 1px, transparent 1px),
    linear-gradient(90deg, var(--line-soft) 1px, transparent 1px);
  background-size: auto, 44px 44px, 44px 44px;
  background-position: center top, center, center;
}
a{ color:inherit; text-decoration:none; }

/* topbar */
.bar{
  display:flex; align-items:center; justify-content:space-between;
  padding:20px 28px;
  border-bottom:1px solid var(--line);
  background:rgba(26,17,36,.7);
  backdrop-filter:blur(8px);
  position:sticky; top:0; z-index:50;
}
.brand{ display:flex; align-items:center; text-decoration:none; }
.brand-logo{ height:44px; width:auto; display:block; transition: transform .15s ease, filter .15s ease; }
.brand:hover .brand-logo{ transform: scale(1.03); filter: brightness(1.05); }
.nav{ display:flex; gap:4px; align-items:center; }
.nav-item{ position:relative; }
.nav-btn{
  display:flex; align-items:center; gap:6px;
  font:inherit; font-size:14px; color:var(--text-2);
  background:none; border:0; cursor:pointer;
  padding:9px 13px; border-radius:var(--r-sm);
  transition:color .15s, background .15s;
  font-family: "Chivo Mono", ui-monospace, monospace;
}
.nav-btn:hover, .nav-item.open .nav-btn{ color:var(--text); background:var(--surface); }
.nav-btn i{ font-size:13px; opacity:.6; transition:transform .18s; }
.nav-item.open .nav-btn i{ transform:rotate(180deg); }
.nav-item.current > .nav-btn{ color:var(--accent); }
.nav-item.current > .nav-btn:hover{ color:var(--accent); background:var(--surface); }
.menu{
  position:absolute; top:calc(100% + 8px); right:0; min-width:208px;
  background:var(--surface); border:1px solid var(--line); border-radius:var(--r);
  padding:6px; box-shadow:0 18px 40px -12px rgba(0,0,0,.6);
  opacity:0; visibility:hidden; transform:translateY(-6px);
  transition:opacity .16s, transform .16s, visibility .16s;
}
.nav-item.open .menu{ opacity:1; visibility:visible; transform:translateY(0); }
.menu a{
  display:flex; align-items:center; gap:10px;
  padding:9px 11px; border-radius:var(--r-sm);
  font-size:14px; color:var(--text-2);
  transition:color .12s, background .12s;
}
.menu a:hover{ color:var(--text); background:var(--surface-2); }
.menu a i{ font-size:15px; color:var(--text-3); width:16px; text-align:center; }
.menu a:hover i{ color:var(--accent); }
.menu a.current{ color:var(--accent); }
.menu a.current i{ color:var(--accent); }
.menu .sep{ height:1px; background:var(--line); margin:6px 4px; }
.menu .group-label{
  display:block; padding:6px 11px 4px;
  font-family:var(--mono); font-size:10px; letter-spacing:.16em;
  text-transform:uppercase; color:var(--text-3);
}
.nav-link{ display:inline-flex; align-items:center;
  font:inherit; font-size:14px; color:var(--text-2);
  padding:9px 13px; border-radius:var(--r-sm);
  transition:color .15s, background .15s; }
.nav-link:hover{ color:var(--text); background:var(--surface); }
.nav-cta{ display:inline-flex; align-items:center; gap:6px;
  font:inherit; font-size:14px; font-weight:500;
  color:var(--accent-ink); background:var(--accent);
  padding:9px 14px; border-radius:var(--r-sm);
  border:1px solid var(--accent);
  transition:filter .15s, transform .15s; }
.nav-cta:hover{ filter:brightness(1.08); transform:translateY(-1px); }
.nav-cta i{ font-size:14px; }
.nav-divider{ width:1px; height:20px; background:var(--line); margin:0 8px; }

/* ticker */
.ticker{ background:rgba(26,17,36,.95);
  border-bottom:1px solid var(--line); padding:7px 0;
  font-family:var(--mono); font-size:11px; letter-spacing:.16em;
  text-transform:lowercase; color:var(--accent); }
.ticker-inner{ overflow:hidden; max-width:1200px; margin:0 auto; padding:0 28px; box-sizing:border-box; }
.ticker-track{ display:inline-flex; white-space:nowrap;
  animation:tickerScroll 50s linear infinite; will-change:transform; }
.ticker:hover .ticker-track{ animation-play-state:paused; }
.ticker-track span{ padding:0; margin-right:43px; }
.ticker-track .sep{ color:var(--text-3); opacity:.55; }
@keyframes tickerScroll{ from{ transform:translateX(0); } to{ transform:translateX(-50%); } }
@media (prefers-reduced-motion: reduce){ .ticker-track{ animation:none; } }

/* footer */
.foot{
  border-top:1px solid var(--line);
  padding:18px 28px; display:flex; justify-content:space-between;
  flex-wrap:wrap; gap:8px;
  font-family:var(--mono); font-size:11px; letter-spacing:.06em;
  color:var(--text-3);
}
.foot-links{ display:flex; gap:10px; align-items:center; flex-wrap:wrap; }
.foot-links a{ color:var(--text-3); text-decoration:none; transition:color .15s; }
.foot-links a:hover, .foot-links a:focus-visible{ color:var(--accent); }
.foot-links .sep{ color:var(--text-3); opacity:.5; }

/* hamburger drawer */
.hamburger {
  display: none; background: transparent; border: 0; color: var(--text);
  width: 48px; height: 48px; cursor: pointer;
  align-items: center; justify-content: center;
  border-radius: var(--r-sm); transition: color .15s, background .15s;
}
.hamburger:hover, .hamburger:focus-visible { color: var(--accent); background: var(--surface); }
.hamburger i { font-size: 26px; }
.mobile-drawer { position: fixed; inset: 0; z-index: 100; pointer-events: none; visibility: hidden; }
.mobile-drawer[aria-hidden="false"] { pointer-events: auto; visibility: visible; }
.drawer-backdrop {
  position: absolute; inset: 0;
  background: rgba(0,0,0,.55);
  opacity: 0; transition: opacity .25s;
}
.mobile-drawer[aria-hidden="false"] .drawer-backdrop { opacity: 1; }
.drawer-panel {
  position: absolute; top: 0; right: 0; bottom: 0;
  width: min(360px, 92vw);
  background: var(--bg); border-left: 1px solid var(--line);
  display: flex; flex-direction: column; overflow-y: auto;
  transform: translateX(100%); transition: transform .25s ease;
  box-shadow: -20px 0 40px rgba(0,0,0,.5);
}
.mobile-drawer[aria-hidden="false"] .drawer-panel { transform: translateX(0); }
.drawer-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 18px; border-bottom: 1px solid var(--line);
}
.drawer-logo { height: 36px; width: auto; display: block; }
.drawer-close {
  background: transparent; border: 0; color: var(--text-2);
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; border-radius: var(--r-sm);
  transition: color .15s, background .15s;
}
.drawer-close i { font-size: 22px; }
.drawer-close:hover, .drawer-close:focus-visible { color: var(--accent); background: var(--surface); }
.drawer-nav { flex: 1; padding: 4px 0; overflow-y: auto; }
.drawer-section { padding: 6px 0; border-top: 1px solid var(--line-soft); }
.drawer-section:first-child { border-top: 0; }
.drawer-section-label {
  display: block; padding: 10px 18px 4px;
  font-family: var(--mono); font-size: 10px; letter-spacing: .22em;
  text-transform: uppercase; color: var(--text-3);
}
.drawer-link {
  display: flex; align-items: center; gap: 12px;
  padding: 14px 18px; min-height: 48px;
  font-size: 15px; color: var(--text-2);
  text-decoration: none; transition: color .12s, background .12s;
}
.drawer-link:hover, .drawer-link:focus-visible { color: var(--accent); background: var(--surface); }
.drawer-link i { font-size: 18px; color: var(--text-3); width: 20px; text-align: center; }
.drawer-link:hover i, .drawer-link:focus-visible i { color: var(--accent); }
.drawer-foot {
  display: flex; gap: 10px;
  padding: 16px 18px; border-top: 1px solid var(--line);
}
.drawer-btn-ghost, .drawer-btn-primary {
  flex: 1;
  display: inline-flex; align-items: center; justify-content: center; gap: 8px;
  height: 48px; border-radius: var(--r-sm);
  font-family: "Chivo Mono", ui-monospace, monospace;
  font-size: 14px; font-weight: 500;
  text-decoration: none;
  transition: filter .15s, border-color .15s, background .15s, color .15s;
}
.drawer-btn-ghost {
  color: var(--text-2); background: transparent;
  border: 1px solid var(--line);
}
.drawer-btn-ghost:hover, .drawer-btn-ghost:focus-visible { color: var(--accent); border-color: var(--accent); }
.drawer-btn-primary {
  color: var(--accent-ink); background: var(--accent);
  border: 1px solid var(--accent);
}
.drawer-btn-primary:hover, .drawer-btn-primary:focus-visible { filter: brightness(1.08); }

/* mobile + a11y */
input[type="text"], input[type="email"],
input[type="password"], input[type="number"], textarea, select { font-size: 16px; }
.nav-btn:focus-visible, .nav-link:focus-visible, .nav-cta:focus-visible,
a:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001s !important; animation-iteration-count: 1 !important;
    transition-duration: 0.001s !important; scroll-behavior: auto !important;
  }
}
@media (min-width: 621px) and (max-width: 1024px) {
  .nav { gap: 2px; }
  .nav-btn, .nav-link { padding: 11px 13px; }
  .nav-cta { padding: 10px 12px; }
}
@media (max-width: 620px) {
  .bar{ padding:16px 18px; }
  .nav{ gap:0; }
  .nav-btn{ padding:8px 9px; font-size:13px; }
  .nav-btn span{ display:none; }
  .menu { right: auto; left: 50%;
    transform: translateX(-50%) translateY(-6px);
    min-width: min(228px, 92vw); max-width: calc(100vw - 24px);
  }
  .nav-item.open .menu { transform: translateX(-50%) translateY(0); }
  .nav-btn, .nav-link { padding: 12px 13px; }
  .nav-cta { padding: 11px 14px; }
  .foot{ padding:16px 18px; }
}
@media (max-width: 480px) {
  .ticker { font-size: 10.5px; padding: 6px 0; }
  .ticker-track span { margin-right: 24px; }
  .ticker-inner { padding: 0 14px; }
}
@media (max-width: 720px) {
  .hamburger { display: flex; }
  .bar .nav { display: none; }
}

/* ════════ paper article body ════════ */

.paper-page{
  flex:1;
  max-width:780px;
  margin:0 auto;
  padding: 56px 28px 80px;
  width:100%;
}

.back-link{
  display:inline-flex; align-items:center; gap:6px;
  font-family:var(--mono); font-size:11.5px; letter-spacing:.14em;
  text-transform:uppercase; color:var(--text-3);
  margin-bottom:24px;
  transition:color .12s;
}
.back-link:hover{ color:var(--accent); }
.back-link i{ font-size:13px; }

.paper-head{
  border-bottom:1px solid var(--line);
  padding-bottom:24px;
  margin-bottom:32px;
}
.paper-meta-strip{
  display:flex; gap:10px; align-items:center; flex-wrap:wrap;
  font-family:var(--mono); font-size:11px; letter-spacing:.12em;
  text-transform:uppercase; color:var(--text-3);
  margin-bottom:16px;
}
.paper-meta-strip .sep{ width:3px; height:3px; border-radius:50%; background:var(--text-3); }
.paper-meta-strip .doi-tag{ color:var(--text-2); }

.paper-title{
  font-size:clamp(24px, 4.2vw, 34px); line-height:1.2;
  letter-spacing:-.015em; font-weight:600;
  color:var(--accent);
  margin:0 0 18px;
}

.byline{
  font-size:14px; color:var(--text-2);
}
.byline a{
  color:var(--accent);
  border-bottom:1px solid transparent;
  transition:border-color .15s;
}
.byline a:hover{ border-bottom-color:var(--accent); }

.paper-section{
  margin-bottom:32px;
}
.section-label{
  font-family:var(--mono); font-size:10.5px; letter-spacing:.22em;
  text-transform:uppercase; color:var(--text-3);
  margin-bottom:12px;
}

.abstract-body{
  font-size:15.5px; line-height:1.7;
  color:var(--text-2);
}
.abstract-body sub, .abstract-body sup{ font-size:.75em; }

.cite-block{
  display:flex; flex-direction:column;
  gap:14px;
}
.cite-format{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r);
  padding:14px 16px;
}
.cite-label{
  display:inline-block;
  font-family:var(--mono); font-size:10.5px; letter-spacing:.18em;
  text-transform:uppercase; color:var(--accent);
  margin-bottom:8px;
}
.cite-format code, .cite-format pre{
  display:block;
  font-family:var(--mono); font-size:12.5px;
  color:var(--text-2);
  white-space:pre-wrap;
  word-break:break-word;
  line-height:1.5;
}
.cite-format pre{ margin:0; }

.paper-cta{
  display:flex; gap:12px; flex-wrap:wrap;
  margin: 8px 0 32px;
}
.cta-primary, .cta-secondary{
  display:inline-flex; align-items:center; gap:8px;
  padding:11px 18px;
  font-family:var(--mono); font-size:12.5px; letter-spacing:.12em;
  text-transform:uppercase;
  border-radius:var(--r-sm);
  border:1px solid;
  transition:filter .15s, background .15s, color .15s, border-color .15s;
}
.cta-primary{
  background:var(--accent); border-color:var(--accent); color:var(--accent-ink);
  font-weight:600;
}
.cta-primary:hover{ filter:brightness(1.08); }
.cta-secondary{
  background:transparent; border-color:var(--line); color:var(--text-2);
}
.cta-secondary:hover{ border-color:var(--accent); color:var(--accent); }
.cta-primary i, .cta-secondary i{ font-size:13px; }

.paper-foot-links{
  border-top:1px solid var(--line);
  padding-top:20px;
  display:flex; justify-content:space-between;
  gap:16px; flex-wrap:wrap;
  font-family:var(--mono); font-size:11.5px; letter-spacing:.14em;
  text-transform:uppercase;
}
.paper-foot-links a{
  color:var(--text-3);
  display:inline-flex; align-items:center; gap:6px;
  transition:color .12s;
}
.paper-foot-links a:hover{ color:var(--accent); }
.paper-foot-links a i{ font-size:13px; }

@media (max-width: 620px){
  .paper-page{ padding: 36px 18px 56px; }
  .paper-head{ padding-bottom:18px; margin-bottom:24px; }
  .cite-format code, .cite-format pre{ font-size:11.5px; }
}