:root {
  /* Palette derived from the Resident Observer's portrait */
  --paper: #F7F4EE;
  --paper-mat: #EFEBE2;
  --paper-card: #FAF8F5;
  --ink: #1C1B18;
  --ink-body: #2C2A26;
  --pewter: #6E6A63;
  --iris-green: #657A30;
  --iris-soft: rgba(101, 122, 48, 0.12);
  --ochre: #B87D32;
  --nose-rose: #C47D79;
  --rule: rgba(28, 27, 24, 0.11);
  --rule-strong: rgba(28, 27, 24, 0.25);

  --font-serif: 'EB Garamond', 'Baskerville', 'Georgia', 'Songti SC', serif;
  --font-mono: 'IBM Plex Mono', 'SFMono-Regular', Menlo, Consolas, monospace;
  --font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'PingFang SC', sans-serif;
  --max-w: 1120px;
}

body.nocturnal {
  --paper: #111310;
  --paper-mat: #181B16;
  --paper-card: #151813;
  --ink: #EAE7DF;
  --ink-body: #CFCBC0;
  --pewter: #8E8B82;
  --iris-green: #9EC24C;
  --iris-soft: rgba(158, 194, 76, 0.14);
  --ochre: #D99B4E;
  --nose-rose: #D9928E;
  --rule: rgba(234, 231, 223, 0.1);
  --rule-strong: rgba(234, 231, 223, 0.24);
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 19px;
  line-height: 1.75;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.4s ease, color 0.4s ease;
  padding-bottom: 96px;
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.2s ease, border-color 0.2s ease;
}

a:hover {
  color: var(--iris-green);
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 36px;
}

/* Top Telemetry / Archival Bar */
.telemetry-bar {
  border-bottom: 1px solid var(--rule);
  padding: 12px 0;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--pewter);
  letter-spacing: 0.04em;
}

.telemetry-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
}

.telemetry-items {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.telemetry-item span {
  color: var(--ink);
  font-weight: 500;
}

.iris-dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--iris-green);
  margin-right: 6px;
  vertical-align: middle;
}

/* Lighting Mode Button */
.mode-toggle {
  background: var(--iris-soft);
  border: 1px solid var(--iris-green);
  color: var(--iris-green);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 4px 12px;
  border-radius: 999px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.mode-toggle:hover {
  background: var(--iris-green);
  color: var(--paper);
}

/* Masthead */
.masthead {
  padding: 44px 0 28px;
  border-bottom: 1px solid var(--rule-strong);
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  flex-wrap: wrap;
  gap: 24px;
}

.masthead-title {
  font-family: var(--font-serif);
  font-size: 2.9rem;
  font-weight: 400;
  letter-spacing: -0.01em;
  line-height: 1.05;
}

.masthead-subtitle {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--pewter);
  margin-top: 6px;
}

.nav-links {
  display: flex;
  gap: 32px;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.nav-links a {
  padding-bottom: 6px;
  border-bottom: 2px solid transparent;
  color: var(--pewter);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--ink);
  border-bottom-color: var(--iris-green);
}

/* Resident Dossier (Home Hero) */
.dossier-hero {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  padding: 56px 0;
  border-bottom: 1px solid var(--rule);
  align-items: center;
}

.dossier-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--iris-green);
  margin-bottom: 14px;
}

.dossier-lead {
  font-size: 2.15rem;
  line-height: 1.32;
  font-weight: 400;
  margin-bottom: 22px;
}

.dossier-lead em {
  font-style: italic;
  color: var(--ochre);
}

.dossier-prose {
  color: var(--ink-body);
  font-size: 1.08rem;
  margin-bottom: 24px;
}

.dossier-specs {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 12px 24px;
  padding-top: 20px;
  border-top: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--pewter);
}

.dossier-specs strong {
  color: var(--ink);
  font-weight: 500;
}

/* Archival Plate Frame (Passepartout) */
.plate-mount {
  background: var(--paper-mat);
  padding: 22px 22px 18px;
  border: 1px solid var(--rule);
  box-shadow: 0 12px 30px rgba(0, 0, 0, 0.04);
}

.plate-mount img {
  width: 100%;
  display: block;
  border: 1px solid var(--rule);
}

.plate-caption {
  margin-top: 14px;
  font-size: 0.88rem;
  line-height: 1.5;
  color: var(--pewter);
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 16px;
}

.plate-caption .plate-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  color: var(--ochre);
  flex-shrink: 0;
}

/* Home Dispatches List with Marginalia Preview */
.section-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 48px 0 20px;
  border-bottom: 1px solid var(--rule-strong);
}

.section-header h2 {
  font-size: 1.65rem;
  font-weight: 400;
  font-style: italic;
}

.section-header .section-meta {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--pewter);
}

.dispatch-list {
  display: flex;
  flex-direction: column;
}

.dispatch-row {
  display: grid;
  grid-template-columns: 180px 1fr 280px;
  gap: 36px;
  padding: 36px 0;
  border-bottom: 1px solid var(--rule);
  align-items: start;
}

.dispatch-vantage {
  font-family: var(--font-mono);
  font-size: 0.73rem;
  color: var(--pewter);
  line-height: 1.6;
}

.dispatch-vantage .elev-tag {
  display: inline-block;
  color: var(--iris-green);
  background: var(--iris-soft);
  padding: 1px 7px;
  border-radius: 3px;
  margin-bottom: 6px;
}

.dispatch-main h3 {
  font-size: 1.55rem;
  font-weight: 500;
  line-height: 1.25;
  margin-bottom: 10px;
}

.dispatch-main p {
  color: var(--ink-body);
  font-size: 1.02rem;
}

.dispatch-aside {
  border-left: 1px solid var(--rule);
  padding-left: 20px;
  font-size: 0.9rem;
  font-style: italic;
  color: var(--pewter);
  line-height: 1.6;
}

.dispatch-aside::before {
  content: "MARGIN NOTE";
  display: block;
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 0.65rem;
  letter-spacing: 0.1em;
  color: var(--ochre);
  margin-bottom: 4px;
}

/* Tufte-Style Essay Layout (Diary Page) */
.essay-header {
  padding: 52px 0 36px;
  border-bottom: 1px solid var(--rule);
  max-width: 780px;
}

.essay-kicker {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--iris-green);
  margin-bottom: 12px;
}

.essay-title {
  font-size: 2.85rem;
  font-weight: 400;
  line-height: 1.15;
  margin-bottom: 16px;
}

.essay-subtitle {
  font-size: 1.3rem;
  font-style: italic;
  color: var(--pewter);
  margin-bottom: 24px;
}

.vantage-ledger {
  display: flex;
  flex-wrap: wrap;
  gap: 24px;
  padding: 14px 18px;
  background: var(--paper-mat);
  border: 1px solid var(--rule);
  font-family: var(--font-mono);
  font-size: 0.73rem;
  color: var(--pewter);
}

.vantage-ledger strong {
  color: var(--ink);
  font-weight: 500;
}

/* Two-Column Literary Body + Sidenotes */
.tufte-grid {
  display: grid;
  grid-template-columns: minmax(0, 680px) 280px;
  gap: 56px;
  padding-top: 44px;
  align-items: start;
}

.essay-prose p {
  margin-bottom: 24px;
  color: var(--ink-body);
  font-size: 1.12rem;
  line-height: 1.85;
}

.essay-prose p.dropcap::first-letter {
  float: left;
  font-size: 4.1rem;
  line-height: 0.82;
  padding-right: 14px;
  padding-top: 4px;
  color: var(--ochre);
  font-family: var(--font-serif);
}

.sidenote-ref {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  vertical-align: super;
  color: var(--iris-green);
  margin-left: 2px;
}

.sidenote-column {
  display: flex;
  flex-direction: column;
  gap: 36px;
  padding-top: 8px;
}

.sidenote-box {
  border-left: 2px solid var(--ochre);
  padding-left: 16px;
  font-size: 0.92rem;
  line-height: 1.6;
  color: var(--pewter);
}

.sidenote-box .sn-num {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--iris-green);
  display: block;
  margin-bottom: 4px;
}

/* Album / Plates Grid */
.elevation-filter-bar {
  display: flex;
  gap: 12px;
  margin: 36px 0 32px;
  flex-wrap: wrap;
}

.elev-btn {
  background: transparent;
  border: 1px solid var(--rule-strong);
  color: var(--pewter);
  padding: 6px 16px;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.2s;
}

.elev-btn.active,
.elev-btn:hover {
  background: var(--ink);
  color: var(--paper);
  border-color: var(--ink);
}

.plates-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 32px;
}

.plate-item {
  display: flex;
  flex-direction: column;
}

.plate-span-7 { grid-column: span 7; }
.plate-span-5 { grid-column: span 5; }
.plate-span-6 { grid-column: span 6; }
.plate-span-12 { grid-column: span 12; }

/* Colophon Footer */
.colophon {
  margin-top: 88px;
  padding-top: 32px;
  border-top: 1px solid var(--rule-strong);
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-family: var(--font-mono);
  font-size: 0.74rem;
  color: var(--pewter);
}

.colophon-seal {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--nose-rose);
  color: var(--nose-rose);
  padding: 3px 10px;
  font-size: 0.7rem;
  letter-spacing: 0.08em;
}

/* Curator's Desk (Admin Drawer) */
.curator-drawer {
  display: none;
  background: var(--paper-mat);
  border-bottom: 2px solid var(--iris-green);
  padding: 28px 0;
  font-family: var(--font-sans);
  font-size: 0.88rem;
}

.curator-drawer.open {
  display: block;
}

.drawer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-top: 16px;
}

.drawer-card {
  background: var(--paper);
  border: 1px solid var(--rule-strong);
  padding: 20px;
}

.drawer-card h4 {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--iris-green);
  margin-bottom: 12px;
  border-bottom: 1px solid var(--rule);
  padding-bottom: 8px;
}

.form-row {
  margin-bottom: 10px;
}

.form-row label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--pewter);
  margin-bottom: 4px;
}

.form-row input,
.form-row select,
.form-row textarea {
  width: 100%;
  padding: 7px 10px;
  background: var(--paper-card);
  border: 1px solid var(--rule-strong);
  color: var(--ink);
  font-family: var(--font-serif);
  font-size: 0.95rem;
}

.btn-literary {
  background: var(--ink);
  color: var(--paper);
  border: 1px solid var(--ink);
  padding: 7px 16px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-literary:hover {
  background: var(--iris-green);
  border-color: var(--iris-green);
  color: #fff;
}

.btn-literary.secondary {
  background: transparent;
  color: var(--ink);
}

.preset-chips {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-bottom: 12px;
}

.preset-chip {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 3px 8px;
  border: 1px solid var(--rule-strong);
  background: var(--paper-card);
  color: var(--pewter);
  cursor: pointer;
}

.preset-chip:hover {
  border-color: var(--iris-green);
  color: var(--iris-green);
}

/* Reader Memoranda / Comments Section */
.comments-section {
  margin-top: 64px;
  padding-top: 40px;
  border-top: 1px solid var(--rule-strong);
}

.comments-title {
  font-size: 1.5rem;
  font-style: italic;
  font-weight: 400;
  margin-bottom: 24px;
}

.comment-item {
  padding: 20px 0;
  border-bottom: 1px solid var(--rule);
}

.comment-meta {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--pewter);
  margin-bottom: 6px;
}

.comment-meta strong {
  color: var(--ink);
}

.comment-body {
  font-size: 1.02rem;
  color: var(--ink-body);
}

.cat-endorsement {
  margin-top: 12px;
  margin-left: 24px;
  padding: 10px 16px;
  border-left: 2px solid var(--iris-green);
  background: var(--iris-soft);
  font-style: italic;
  font-size: 0.94rem;
}

.cat-endorsement::before {
  content: "THE RESIDENT’S MARGIN REPLY:";
  display: block;
  font-family: var(--font-mono);
  font-style: normal;
  font-size: 0.65rem;
  letter-spacing: 0.08em;
  color: var(--iris-green);
  margin-bottom: 3px;
}

.comment-form-box {
  margin-top: 32px;
  background: var(--paper-mat);
  padding: 24px;
  border: 1px solid var(--rule);
}

/* Switcher Pill */
.design-pill-banner {
  position: fixed;
  bottom: 20px;
  right: 20px;
  background: #1C1B18;
  color: #F7F4EE;
  border: 1px solid var(--iris-green);
  padding: 8px 16px;
  border-radius: 30px;
  font-family: var(--font-mono);
  font-size: 0.72rem;
  display: flex;
  align-items: center;
  gap: 12px;
  box-shadow: 0 10px 25px rgba(0, 0, 0, 0.25);
  z-index: 9999;
}

.design-pill-banner a {
  color: #9EC24C;
  text-decoration: underline;
}

@media (max-width: 920px) {
  .dossier-hero { grid-template-columns: 1fr; gap: 36px; }
  .dispatch-row { grid-template-columns: 1fr; gap: 12px; }
  .dispatch-aside { border-left: 2px solid var(--ochre); margin-top: 8px; }
  .tufte-grid { grid-template-columns: 1fr; gap: 32px; }
  .plate-span-7, .plate-span-5, .plate-span-6 { grid-column: span 12; }
}