/* ─── TOKENS ─────────────────────────────────────── */
:root {
  --paper:   #F7F4EF;
  --paper2:  #EDE9E2;
  --ink:     #1A1714;
  --ink2:    #3D3830;
  --muted:   #7A7060;
  --rule:    #C8BFB0;
  --accent:  #1A3A5C;
  --accent2: #5C2D1A;
  --green:   #1A4A2A;
  --red:     #5C1A1A;
  --mono:    'IBM Plex Mono', monospace;
  --serif:   'Lora', Georgia, serif;
  --sans:    'IBM Plex Sans', system-ui, sans-serif;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  background: #E8E3DA;
  color: var(--ink);
  font-family: var(--serif);
  line-height: 1.75;
}

/* ─── LAYOUT ─────────────────────────────────────── */
.page-wrap {
  max-width: 820px;
  margin: 40px auto 80px;
  background: var(--paper);
  box-shadow: 0 4px 40px rgba(0,0,0,0.18), 0 1px 4px rgba(0,0,0,0.1);
}

/* ─── COVER PAGE ─────────────────────────────────── */
#cover {
  padding: 72px 80px 60px;
  border-bottom: 2px solid var(--ink);
  position: relative;
}

.journal-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  margin-bottom: 48px;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.journal-header .journal-name {
  font-size: 11px;
  color: var(--accent);
  font-weight: 500;
}

.cover-rule {
  width: 48px;
  height: 3px;
  background: var(--ink);
  margin-bottom: 28px;
}

h1.paper-title {
  font-family: var(--serif);
  font-size: 30px;
  font-weight: 700;
  line-height: 1.25;
  color: var(--ink);
  letter-spacing: -0.01em;
  margin-bottom: 20px;
  max-width: 640px;
}

.paper-subtitle {
  font-family: var(--serif);
  font-style: italic;
  font-size: 16px;
  color: var(--ink2);
  margin-bottom: 36px;
  max-width: 560px;
  line-height: 1.5;
}

.authors {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 28px;
}
.author-line {
  font-family: var(--sans);
  font-size: 13px;
  color: var(--ink2);
}
.author-line strong { color: var(--ink); }
.affiliation {
  font-family: var(--sans);
  font-size: 11px;
  color: var(--muted);
  font-style: italic;
}

.cover-meta {
  display: flex;
  gap: 32px;
  padding-top: 24px;
  border-top: 1px solid var(--rule);
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.06em;
}
.cover-meta-item span:first-child {
  text-transform: uppercase;
  display: block;
  margin-bottom: 2px;
}
.cover-meta-item span:last-child {
  color: var(--ink2);
  font-size: 11px;
}

/* ─── ABSTRACT ───────────────────────────────────── */
#abstract {
  padding: 40px 80px;
  background: var(--paper2);
  border-bottom: 1px solid var(--rule);
}

.abstract-label {
  font-family: var(--sans);
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 12px;
}

#abstract p {
  font-family: var(--sans);
  font-size: 13.5px;
  line-height: 1.75;
  color: var(--ink2);
}

.keywords-row {
  margin-top: 16px;
  font-family: var(--sans);
  font-size: 12px;
  color: var(--muted);
}
.keywords-row strong {
  color: var(--ink2);
  font-weight: 600;
}

/* ─── NAVIGATION (sticky) ────────────────────────── */
#toc-nav {
  position: sticky;
  top: 0;
  background: rgba(247,244,239,0.97);
  border-bottom: 1px solid var(--rule);
  padding: 10px 80px;
  z-index: 100;
  backdrop-filter: blur(4px);
  display: flex;
  gap: 0;
  flex-wrap: wrap;
  overflow: hidden;
}
#toc-nav a {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
  text-decoration: none;
  padding: 4px 12px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  transition: color 0.15s;
  white-space: nowrap;
}
#toc-nav a:hover { color: var(--accent); }
#toc-nav a.active { color: var(--accent); font-weight: 500; }

/* ─── BODY ───────────────────────────────────────── */
.paper-body {
  padding: 0 80px 60px;
  counter-reset: figure;
}

/* ─── SECTIONS ───────────────────────────────────── */
.section {
  margin-top: 56px;
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.section.visible { opacity: 1; transform: none; }

.section-num {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin-bottom: 6px;
}

h2.sec-title {
  font-family: var(--serif);
  font-size: 20px;
  font-weight: 700;
  color: var(--ink);
  margin-bottom: 4px;
  line-height: 1.3;
}

.sec-rule {
  width: 100%;
  height: 1px;
  background: var(--rule);
  margin: 12px 0 20px;
}
.sec-rule.thick {
  height: 2px;
  background: var(--ink);
}

h3.sub-title {
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin: 28px 0 10px;
}

p {
  font-size: 15px;
  line-height: 1.8;
  color: var(--ink);
  margin-bottom: 14px;
}

p.lead {
  font-size: 16.5px;
  font-style: italic;
  color: var(--ink2);
  border-left: 3px solid var(--accent);
  padding-left: 18px;
  margin-bottom: 20px;
}

.ref-inline {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  cursor: default;
}

.footnote {
  font-family: var(--sans);
  font-size: 12px;
  color: var(--muted);
  border-top: 1px solid var(--rule);
  padding-top: 10px;
  margin-top: 8px;
  line-height: 1.6;
}

/* ─── CALLOUT BOXES ──────────────────────────────── */
.callout {
  border-left: 4px solid var(--accent);
  background: var(--paper2);
  padding: 16px 20px;
  margin: 24px 0;
  font-family: var(--sans);
  font-size: 13.5px;
  line-height: 1.7;
  color: var(--ink2);
}
.callout.finding { border-color: var(--green); }
.callout.warning { border-color: var(--red); }
.callout.note    { border-color: var(--muted); }
.callout strong { color: var(--ink); }
.callout-label {
  font-family: var(--mono);
  font-size: 9px;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 8px;
  color: var(--muted);
}
.callout.finding .callout-label { color: var(--green); }
.callout.warning .callout-label { color: var(--red); }

/* ─── PULL QUOTE ─────────────────────────────────── */
blockquote.pull {
  margin: 32px 0;
  padding: 0 0 0 24px;
  border-left: 4px solid var(--ink);
  font-family: var(--serif);
  font-size: 18px;
  font-style: italic;
  color: var(--ink2);
  line-height: 1.55;
}
blockquote.pull cite {
  display: block;
  font-family: var(--sans);
  font-size: 11px;
  font-style: normal;
  color: var(--muted);
  margin-top: 10px;
  letter-spacing: 0.05em;
}

/* ─── FIGURES ────────────────────────────────────── */
figure {
  margin: 32px 0;
  counter-increment: figure;
}
figure canvas {
  width: 100%;
  display: block;
}
figcaption {
  font-family: var(--sans);
  font-size: 12px;
  color: var(--muted);
  margin-top: 10px;
  line-height: 1.55;
  border-top: 1px solid var(--rule);
  padding-top: 8px;
}
figcaption strong {
  color: var(--ink2);
  font-weight: 600;
  font-family: var(--mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.fig-wrap {
  background: white;
  border: 1px solid var(--rule);
  padding: 24px 20px 16px;
}

/* ─── SPECTRUM VIZ ───────────────────────────────── */
.spectrum-wrap {
  background: white;
  border: 1px solid var(--rule);
  padding: 24px 20px 20px;
  margin: 32px 0 8px;
}
.spectrum-track {
  display: flex;
  height: 52px;
  border: 1px solid var(--rule);
  overflow: hidden;
}
.s-band {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.06em;
  cursor: default;
  transition: filter 0.2s;
  border-right: 1px solid rgba(255,255,255,0.2);
}
.s-band:hover { filter: brightness(0.9); }
.s-band .hz { font-size: 8px; opacity: 0.75; margin-top: 2px; }
.b-delta { flex:3.5; background:#D4CCE8; color:#3B1F7A; }
.b-theta { flex:4;   background:#1A3A5C; color:white; }
.b-alpha { flex:5;   background:#C8E0C0; color:#1A4A2A; }
.b-beta  { flex:17;  background:#F0E8CC; color:#5C4A10; }
.b-gamma { flex:15;  background:#F0D0CC; color:#5C1A1A; }
.spectrum-legend {
  display: flex;
  justify-content: space-between;
  margin-top: 8px;
  font-family: var(--mono);
  font-size: 9px;
  color: var(--muted);
  letter-spacing: 0.04em;
}
.spectrum-note {
  margin-top: 10px;
  text-align: center;
  font-family: var(--sans);
  font-size: 11.5px;
  color: var(--accent);
  font-style: italic;
}

/* ─── GANTT ──────────────────────────────────────── */
.gantt-wrap {
  background: white;
  border: 1px solid var(--rule);
  padding: 24px 20px 16px;
  margin: 32px 0 8px;
}
.gantt-track {
  display: flex;
  height: 52px;
  border: 1px solid var(--rule);
  overflow: hidden;
}
.g-phase {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: var(--mono);
  font-size: 9px;
  letter-spacing: 0.05em;
  border-right: 1px solid rgba(255,255,255,0.3);
  cursor: default;
}
.g-phase .ph-n { font-size: 9px; font-weight: 500; }
.g-phase .ph-t { font-size: 8px; opacity: 0.8; margin-top: 2px; }
.g-p1 { flex:90;  background:#C8CCD8; color:#1A1A3A; }
.g-p2 { flex:60;  background:#D8CCA8; color:#3A2A0A; }
.g-p3 { flex:150; background:#1A3A5C; color:white; }
.gantt-ticks {
  display: flex;
  justify-content: space-between;
  margin-top: 6px;
  font-family: var(--mono);
  font-size: 9px;
  color: var(--muted);
}

/* ─── STACK VIZ ──────────────────────────────────── */
.stack-wrap {
  background: white;
  border: 1px solid var(--rule);
  padding: 24px 20px 20px;
  margin: 32px 0 8px;
}
.stack-row {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 14px;
}
.stack-lbl {
  width: 170px;
  min-width: 170px;
  font-family: var(--sans);
  font-size: 12px;
  color: var(--ink2);
  line-height: 1.35;
}
.stack-track {
  flex: 1;
  height: 26px;
  background: var(--paper2);
  border: 1px solid var(--rule);
  overflow: hidden;
  position: relative;
}
.stack-bar {
  height: 100%;
  display: flex;
  align-items: center;
  padding-left: 8px;
  font-family: var(--mono);
  font-size: 10px;
  font-weight: 500;
  color: white;
  transition: width 1.2s cubic-bezier(0.16,1,0.3,1);
}
.sb-1 { background: #1A3A5C; }
.sb-2 { background: #5C2D1A; }
.sb-3 { background: #1A4A2A; }
.stack-ref {
  font-family: var(--mono);
  font-size: 9px;
  color: var(--muted);
  min-width: 90px;
  text-align: right;
}
.stack-total-row {
  display: flex;
  align-items: center;
  gap: 14px;
  padding-top: 12px;
  border-top: 1px solid var(--rule);
  margin-top: 4px;
}
.stack-total-row .stack-lbl { color: var(--ink); font-weight: 600; }
.stack-total-row .stack-bar { background: var(--ink); }

/* ─── DATA TABLE ─────────────────────────────────── */
.tbl-wrap { overflow-x: auto; margin: 24px 0; }
table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--sans);
  font-size: 12.5px;
}
thead tr {
  border-bottom: 2px solid var(--ink);
}
thead th {
  padding: 10px 12px;
  text-align: left;
  font-weight: 600;
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--ink2);
  font-family: var(--mono);
}
tbody tr {
  border-bottom: 1px solid var(--rule);
}
tbody tr:hover { background: var(--paper2); }
tbody td {
  padding: 9px 12px;
  color: var(--ink);
  vertical-align: top;
  line-height: 1.55;
}
tbody tr:last-child td { font-weight: 600; border-bottom: 2px solid var(--ink); }

/* ─── BULLET LIST ────────────────────────────────── */
ul.sci-list {
  margin: 12px 0 16px 0;
  padding: 0;
  list-style: none;
}
ul.sci-list li {
  padding: 6px 0 6px 22px;
  position: relative;
  font-size: 14.5px;
  border-bottom: 1px solid var(--rule);
  line-height: 1.7;
}
ul.sci-list li:last-child { border-bottom: none; }
ul.sci-list li::before {
  content: '—';
  position: absolute;
  left: 0;
  color: var(--muted);
  font-family: var(--mono);
}

/* ─── REFERENCES SECTION ─────────────────────────── */
#references {
  background: var(--paper2);
  padding: 40px 80px;
  border-top: 2px solid var(--ink);
}
.ref-entry {
  display: flex;
  gap: 14px;
  padding: 10px 0;
  border-bottom: 1px solid var(--rule);
  font-family: var(--sans);
  font-size: 12.5px;
  line-height: 1.65;
}
.ref-entry:last-child { border-bottom: none; }
.ref-n {
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
  min-width: 32px;
  padding-top: 2px;
}
.ref-entry .ref-author { font-weight: 600; color: var(--ink); }
.ref-entry em { color: var(--ink2); }

.right { text-align:right; }
.200px { height:200px; }
.220px { height:220px; }
.police1 { color:var(--accent);font-style:italic; }
.police2 { font-weight:600;color:var(--ink2); }
.police3{ font-family:var(--serif);font-size:18px;margin-bottom:6px; }
.fig { font-family:var(--sans);font-size:12px;color:var(--muted);margin-top:6px;padding-top:8px;border-top:1px solid var(--rule); }
.strong { font-family:var(--mono);font-size:11px;color:var(--ink2); }
.marginTop { margin-top:12px; }
.marginTopX2 { margin-top:24px; }
.spn { color:var(--muted);font-size:11px; }
.wzero { width:0%; }
.bgink { background:var(--ink); }
.stl { width:40px;height:2px;background:var(--ink);margin-bottom:20px; }



/* ─── FOOTER ─────────────────────────────────────── */
footer.paper-footer {
  padding: 24px 80px;
  border-top: 1px solid var(--rule);
  display: flex;
  justify-content: space-between;
  font-family: var(--mono);
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.06em;
}

@media (max-width: 640px) {
  #cover, .paper-body, #abstract, #references, footer.paper-footer,
  #toc-nav { padding-left: 24px; padding-right: 24px; }
  h1.paper-title { font-size: 22px; }
  .stack-lbl { width: 110px; min-width: 110px; }
  .stack-ref { display: none; }
  .cover-meta { flex-wrap: wrap; gap: 16px; }
  .page-wrap { margin: 0; }
}