/* Chalk Ledger — MarkVault Drift — Fully White Theme */
@import url("https://fonts.googleapis.com/css2?family=Bricolage+Grotesque:wght@600;800&family=IBM+Plex+Mono:wght@400&family=Source+Serif+4:opsz,wght@8..60,400;8..60,600&display=swap");

:root {
  --chalk: #FFFFFF;
  --sheet: #FBFAF8;
  --rule-surface: #F2F1ED;
  --ink: #14161A;
  --ink-body: #1A1C21;
  --ink-muted: #5A5F68;
  --hairline: #E0DDD6;
  --accent: #24406B;
  --accent-soft: #E6EBF3;
  --accent-dim: #1a3357;
  --margin-rule: #24406B;
  --font-display: "Bricolage Grotesque", system-ui, sans-serif;
  --font-serif: "Source Serif 4", Georgia, serif;
  --font-mono: "IBM Plex Mono", "Consolas", monospace;
  --shell: 61.25rem;
  --measure: 65ch;
  --baseline: 8px;
  --ease: cubic-bezier(.16, 1, .3, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  border-radius: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 100%;
}

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

body {
  margin: 0;
  font-family: var(--font-serif);
  font-size: 1.125rem;
  line-height: 1.68;
  color: var(--ink-body);
  background-color: var(--chalk);
  background-image:
    repeating-linear-gradient(
      to bottom,
      transparent 0,
      transparent calc(var(--baseline) * 3 - 1px),
      rgba(36, 64, 107, 0.04) calc(var(--baseline) * 3 - 1px),
      rgba(36, 64, 107, 0.04) calc(var(--baseline) * 3)
    );
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover { text-decoration: none; }

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.2;
  color: var(--ink);
}

h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 800;
  margin: 0 0 1.25rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(1.375rem, 3vw, 1.875rem);
  margin: 2.5rem 0 0.875rem;
}

h3 {
  font-size: 1.1875rem;
  margin: 1.75rem 0 0.625rem;
}

p {
  margin: 0 0 1rem;
  max-width: var(--measure);
}

ul, ol {
  margin: 0 0 1rem;
  padding-left: 1.375rem;
  max-width: var(--measure);
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  background: var(--accent);
  color: var(--chalk);
  padding: 0.5rem 1rem;
  z-index: 9999;
  font-family: var(--font-display);
}

.skip-link:focus { left: 0; }

/* Shell */
.site-shell {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 1.25rem;
}

/* Surfaces */
.surface-chalk { background: var(--chalk); color: var(--ink); }
.surface-sheet { background: var(--sheet); color: var(--ink); }
.surface-rule { background: var(--rule-surface); color: var(--ink-body); }

/* Header */
.site-header {
  background: var(--chalk);
  border-bottom: 1px solid var(--hairline);
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0.875rem 1.25rem;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: var(--ink);
}

.brand-mark {
  width: 2.5rem;
  height: 2.5rem;
  background: var(--chalk);
  color: var(--accent);
  border: 1px solid var(--hairline);
  font-family: var(--font-serif);
  font-size: 0.8125rem;
  font-weight: 600;
  display: flex;
  align-items: center;
  justify-content: center;
  letter-spacing: -0.03em;
}

.brand-text {
  display: flex;
  flex-direction: column;
  line-height: 1.2;
}

.brand-name {
  font-family: var(--font-display);
  font-size: 1.0625rem;
  font-weight: 600;
}

.brand-tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  color: var(--ink-muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.main-nav ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.25rem 1.125rem;
}

.main-nav a {
  color: var(--ink-body);
  text-decoration: none;
  font-family: var(--font-display);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.375rem 0;
  border-bottom: 2px solid transparent;
}

.main-nav a:hover,
.main-nav a[aria-current="page"] {
  border-bottom-color: var(--accent);
  color: var(--accent);
}

.nav-btn {
  background: var(--accent) !important;
  color: var(--chalk) !important;
  padding: 0.5rem 0.875rem !important;
  border-bottom: none !important;
}

.nav-btn:hover {
  background: var(--accent-dim) !important;
  color: var(--chalk) !important;
}

/* Main */
main {
  padding: 2.5rem 0 3rem;
}

.lead {
  font-size: 1.25rem;
  color: var(--ink-muted);
  max-width: 42rem;
}

.page-meta {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--ink-muted);
  margin-bottom: 2rem;
  letter-spacing: 0.02em;
}

/* Hero */
.hero-ledger {
  margin-bottom: 3rem;
}

.hero-ledger h1 {
  max-width: none;
}

.hero-image-wide {
  margin-top: 2rem;
  border: 1px solid var(--hairline);
}

.hero-caption {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--ink-muted);
  margin-top: 0.625rem;
}

/* Ruled sheet — B-S1 */
.ruled-sheet {
  position: relative;
  padding: 2rem 1.5rem 2rem 2.25rem;
  margin: 2.5rem 0;
  background: var(--sheet);
  border: 1px solid var(--hairline);
  background-image:
    repeating-linear-gradient(
      to bottom,
      transparent 0,
      transparent calc(var(--baseline) * 3 - 1px),
      rgba(36, 64, 107, 0.06) calc(var(--baseline) * 3 - 1px),
      rgba(36, 64, 107, 0.06) calc(var(--baseline) * 3)
    );
}

.ruled-sheet::before {
  content: "";
  position: absolute;
  left: 1.25rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--margin-rule);
}

@media (prefers-reduced-motion: no-preference) {
  html.js-motion .ruled-sheet.is-visible {
    animation: ruledFade 480ms var(--ease) forwards;
  }
}

@keyframes ruledFade {
  from { opacity: 0.72; }
  to { opacity: 1; }
}

/* Folio column — B-S2 */
.folio-column {
  margin: 2.5rem 0;
  max-width: var(--measure);
}

.folio-entry {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: 0 1.25rem;
  margin-bottom: 2.25rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--hairline);
}

.folio-entry:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.folio-num {
  font-family: var(--font-mono);
  font-size: 0.9375rem;
  color: var(--accent);
  text-align: right;
  padding-top: 0.25rem;
}

@media (prefers-reduced-motion: no-preference) {
  html.js-motion .folio-num {
    animation: folioSlide 240ms var(--ease) backwards;
  }
  html.js-motion .folio-entry:nth-child(2) .folio-num { animation-delay: 80ms; }
  html.js-motion .folio-entry:nth-child(3) .folio-num { animation-delay: 160ms; }
  html.js-motion .folio-entry:nth-child(4) .folio-num { animation-delay: 240ms; }
  html.js-motion .folio-entry:nth-child(5) .folio-num { animation-delay: 320ms; }
  html.js-motion .folio-entry:nth-child(6) .folio-num { animation-delay: 400ms; }
}

@keyframes folioSlide {
  from { opacity: 0; transform: translateX(-6px); }
  to { opacity: 1; transform: translateX(0); }
}

.folio-entry h3 {
  font-family: var(--font-display);
  margin-top: 0;
}

.folio-entry p:last-child { margin-bottom: 0; }

/* Gutter — B-S3 */
.gutter-block {
  display: grid;
  gap: 0;
  margin: 2.5rem 0;
  border: 1px solid var(--hairline);
  background: var(--chalk);
}

@media (min-width: 768px) {
  .gutter-block {
    grid-template-columns: 1fr 1px 1fr;
  }
}

.gutter-divider {
  display: none;
  background: var(--hairline);
}

@media (min-width: 768px) {
  .gutter-divider { display: block; }
}

.gutter-left,
.gutter-right {
  padding: 1.75rem 1.5rem;
}

.gutter-label {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ink-muted);
  margin-bottom: 0.75rem;
}

.gutter-row {
  display: grid;
  gap: 0;
  border-bottom: 1px solid var(--hairline);
}

.gutter-row:last-child { border-bottom: none; }

@media (min-width: 768px) {
  .gutter-rows { display: contents; }
  .gutter-row {
    display: grid;
    grid-template-columns: 1fr 1px 1fr;
    grid-column: 1 / -1;
  }
  .gutter-row .gutter-left,
  .gutter-row .gutter-right { border: none; }
  .gutter-row .gutter-divider { display: block; }
}

/* Blank leaf — B-S4 */
.blank-leaf {
  margin: 4rem 0 2rem;
  padding: 3rem 1.5rem;
  text-align: center;
  border-top: 1px solid var(--hairline);
  position: relative;
  min-height: 8rem;
}

.blank-leaf p {
  font-family: var(--font-serif);
  font-size: 1.3125rem;
  font-style: italic;
  color: var(--ink-muted);
  max-width: 28rem;
  margin: 0 auto;
}

.blank-leaf .leaf-num {
  position: absolute;
  bottom: 1rem;
  right: 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-muted);
}

/* Photo layouts */
.photo-row-uneven {
  display: grid;
  gap: 1rem;
  margin: 2.5rem 0;
}

@media (min-width: 768px) {
  .photo-row-uneven {
    grid-template-columns: 5fr 3fr 4fr;
    align-items: start;
  }
}

.photo-row {
  display: grid;
  gap: 1.25rem;
  margin: 2rem 0;
}

@media (min-width: 640px) {
  .photo-row { grid-template-columns: 1fr 1fr; }
}

.photo-mosaic {
  display: grid;
  gap: 0.75rem;
  margin: 2rem 0 2.5rem;
}

@media (min-width: 768px) {
  .photo-mosaic {
    grid-template-columns: 1.2fr 0.8fr;
    grid-template-rows: auto auto;
  }
  .photo-mosaic .mosaic-tall { grid-row: span 2; }
}

.photo-card figcaption,
figure figcaption {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-muted);
  margin-top: 0.5rem;
  padding: 0 0.75rem 0.75rem;
}

figure {
  margin: 0 0 1.5rem;
  border: 1px solid var(--hairline);
}

figure img { width: 100%; }

/* Signed letter */
.signed-letter {
  max-width: var(--measure);
  padding: 2rem 0;
  border-top: 1px solid var(--hairline);
  margin-top: 2rem;
}

.signed-letter .letter-date {
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  color: var(--ink-muted);
  margin-bottom: 1.5rem;
}

.signed-letter .letter-sign {
  margin-top: 2rem;
  font-style: italic;
}

.disclaimer {
  font-size: 0.9375rem;
  color: var(--ink-muted);
  margin-top: 2rem;
  padding-top: 1.5rem;
  border-top: 1px dashed var(--hairline);
  max-width: var(--measure);
}

/* FAQ — two column sticky index */
.footnotes-layout {
  display: grid;
  gap: 2rem;
  margin: 2rem 0;
}

@media (min-width: 768px) {
  .footnotes-layout {
    grid-template-columns: 11rem 1fr;
    align-items: start;
  }
}

.faq-index {
  position: sticky;
  top: 5rem;
}

.faq-index ul {
  list-style: none;
  padding: 0;
  margin: 0;
  max-width: none;
}

.faq-index li { margin-bottom: 0.375rem; }

.faq-index a {
  display: block;
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--ink-muted);
  text-decoration: none;
  padding: 0.375rem 0 0.375rem 1rem;
  border-left: 2px solid transparent;
  position: relative;
}

.faq-index a:hover,
.faq-index a.is-active {
  color: var(--accent);
  border-left-color: var(--accent);
}

@media (prefers-reduced-motion: no-preference) {
  html.js-motion .faq-index a.is-active::before {
    content: "";
    position: absolute;
    left: -2px;
    top: 50%;
    width: 6px;
    height: 2px;
    background: var(--accent);
    transform: translateY(-50%);
    animation: tickSlide 160ms var(--ease);
  }
}

@keyframes tickSlide {
  from { width: 0; opacity: 0; }
  to { width: 6px; opacity: 1; }
}

.faq-content { column-gap: 2.5rem; }

@media (min-width: 900px) {
  .faq-content { columns: 2; }
}

.faq-item {
  break-inside: avoid;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--hairline);
}

.faq-item h3 {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
}

/* Maps */
.map-wrap,
.map-embed-wrap {
  margin: 2.5rem 0 1rem;
}

.map-wrap iframe,
.map-embed {
  width: 100%;
  border: 0;
  display: block;
  filter: grayscale(0.25) brightness(1.05);
}

.map-wrap--a iframe,
.map-embed.map-a {
  height: 260px;
  border: 1px solid var(--accent);
}

@media (min-width: 768px) {
  .map-wrap--a iframe,
  .map-embed.map-a { height: 400px; }
}

.map-wrap--b {
  padding-top: 2rem;
  border-top: 1px solid var(--hairline);
}

.map-wrap--b iframe,
.map-embed.map-b {
  height: 200px;
  border: 1px solid var(--hairline);
}

.map-wrap--c iframe,
.map-embed.map-c {
  height: 280px;
  border: 1px solid var(--hairline);
}

.map-wrap--d {
  max-width: 28rem;
}

.map-wrap--d iframe,
.map-embed.map-d {
  height: 180px;
  border: 1px solid var(--hairline);
  filter: grayscale(0.25) brightness(1.05);
}

.map-caption {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-muted);
  margin-top: 0.5rem;
}

/* Doorplate */
.doorplate-map {
  margin-bottom: 2rem;
}

/* Footer */
.site-footer {
  background: var(--sheet);
  border-top: 1px solid var(--hairline);
  padding: 2.5rem 0 2rem;
  margin-top: 1rem;
}

.footer-inner {
  max-width: var(--shell);
  margin: 0 auto;
  padding: 0 1.25rem;
}

.footer-entity {
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.footer-address,
.footer-contact {
  font-size: 0.9375rem;
  color: var(--ink-muted);
  line-height: 1.65;
}

.footer-tagline {
  font-size: 0.875rem;
  color: var(--ink-muted);
  font-style: italic;
  margin: 1rem 0;
}

.footer-legal ul {
  list-style: none;
  padding: 0;
  margin: 1.25rem 0 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  max-width: none;
}

.footer-legal a {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  color: var(--ink-muted);
}

.footer-copy {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--ink-muted);
  margin-top: 1.5rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--hairline);
}

/* Cookie banner — bottom-right desktop */
.cookie-strip {
  position: fixed;
  bottom: 0;
  right: 0;
  left: 0;
  background: var(--chalk);
  border-top: 2px solid var(--accent);
  z-index: 1000;
  transform: translateY(110%);
  transition: transform 480ms var(--ease);
  max-width: 100%;
}

@media (min-width: 640px) {
  .cookie-strip {
    left: auto;
    bottom: 1.25rem;
    right: 1.25rem;
    max-width: 26rem;
    border: 1px solid var(--hairline);
    border-top: 2px solid var(--accent);
  }
}

@media (prefers-reduced-motion: reduce) {
  .cookie-strip { transition: none; }
}

.cookie-strip.is-visible { transform: translateY(0); }

.cookie-strip-inner { padding: 1.25rem; }

.cookie-strip p {
  margin: 0 0 1rem;
  font-size: 0.9375rem;
  max-width: none;
}

.cookie-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.cookie-actions button,
.cookie-panel-actions button {
  font-family: var(--font-display);
  font-size: 0.8125rem;
  font-weight: 600;
  padding: 0.5rem 0.875rem;
  cursor: pointer;
  border: 1px solid var(--hairline);
  background: var(--sheet);
  color: var(--ink-body);
}

.cookie-accept {
  background: var(--accent) !important;
  color: var(--chalk) !important;
  border-color: var(--accent) !important;
}

.cookie-reject,
.cookie-customise {
  background: var(--chalk);
}

.cookie-panel {
  display: none;
  margin-top: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--hairline);
}

.cookie-panel.is-open { display: block; }

.cookie-panel h2 {
  font-size: 1.0625rem;
  margin: 0 0 0.75rem;
}

.cookie-toggle-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.625rem 0;
  border-bottom: 1px solid var(--hairline);
  font-size: 0.9375rem;
}

.cookie-toggle-btn {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  padding: 0.375rem 0.75rem;
  border: 1px solid var(--hairline);
  background: var(--chalk);
  cursor: pointer;
  min-width: 3.5rem;
}

.cookie-toggle-btn.is-on,
.cookie-toggle-btn[aria-pressed="true"] {
  background: var(--accent-soft);
  border-color: var(--accent);
  color: var(--accent);
}

.cookie-panel-actions {
  display: flex;
  gap: 0.5rem;
  margin-top: 1rem;
}

.cookie-save {
  background: var(--accent) !important;
  color: var(--chalk) !important;
  border-color: var(--accent) !important;
}

/* 404 */
.error-page {
  text-align: center;
  padding: 4rem 0;
}

.error-page h1 { margin-bottom: 1rem; }

.error-page .error-lead {
  font-size: 1.125rem;
  color: var(--ink-muted);
  max-width: 32rem;
  margin: 0 auto 2rem;
}

/* Legal */
.legal-content h2 { margin-top: 2.5rem; }
.legal-content h2:first-of-type { margin-top: 1.5rem; }
.legal-content p,
.legal-content ul { max-width: var(--measure); }

/* Utility */
.text-muted { color: var(--ink-muted); }
.mt-0 { margin-top: 0; }
.hairline-top {
  border-top: 1px solid var(--hairline);
  padding-top: 2rem;
  margin-top: 2rem;
}

.entry-list {
  list-style: none;
  padding: 0;
  margin: 1.5rem 0;
  max-width: var(--measure);
}

.entry-list li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--hairline);
  font-family: var(--font-mono);
  font-size: 0.875rem;
}

.entry-list li strong {
  font-family: var(--font-display);
  color: var(--accent);
  margin-right: 0.5rem;
}