/* ============================================
   The Study — Mere Correspondence's private room
   Extends the house, doesn't imitate it. Tokens and the material layer
   are lifted from site/styles.css verbatim; the furniture is the Study's own.
   ============================================ */

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

:root {
  --ink: #1A1A1A;
  --parchment: #F5F0E8;
  --sheet: #FAF6EF;
  --aged-cream: #EDE6D6;
  --oxblood: #6B1D1D;
  --gold: #9E8A5A;
  --gold-ink: #776739;
  --slate: #4A4A4A;
  --plate-border: #521515;

  --font-primary: 'EB Garamond', Georgia, 'Times New Roman', serif;
  --font-body: 'Crimson Pro', Georgia, serif;

  --rail-width: 15rem;
}

html {
  font-size: 17px;
}

@media (prefers-reduced-motion: no-preference) {
  html { scroll-behavior: smooth; }
}

body {
  font-family: var(--font-body);
  font-weight: 400;
  color: var(--ink);
  background-color: var(--parchment);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* The material layer — copied from site/styles.css, not approximated.
   Paper, not a hex code — a whisper of cotton fiber across the parchment. */
body {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='260' height='260'%3E%3Cfilter id='p'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.8' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0.11 0 0 0 0 0.09 0 0 0 0 0.06 0 0 0 0.045 0'/%3E%3C/filter%3E%3Crect width='260' height='260' filter='url(%23p)'/%3E%3C/svg%3E");
}

/* Oldstyle figures where numbers appear — period-true, silent fallback. */
body { font-feature-settings: "onum" 1, "pnum" 1; }

/* Even the highlighter is in house ink. */
::selection { background: var(--oxblood); color: var(--parchment); }

a {
  color: var(--oxblood);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color 0.2s;
}
a:hover { border-bottom-color: var(--oxblood); }

:focus-visible {
  outline: 2px solid var(--gold);
  outline-offset: 3px;
}

code {
  font-family: var(--font-body);
  font-style: italic;
  color: var(--slate);
}

.skip-link {
  position: absolute; left: -9999px; top: 0; z-index: 60;
  background: var(--oxblood); color: var(--parchment);
  font-family: var(--font-primary); font-size: 0.85rem;
  letter-spacing: 0.08em; padding: 0.7rem 1.2rem;
}
.skip-link:focus { left: 0; }

/* ============================================
   The rail — seven rooms, type only, gold active marker
   ============================================ */

.rail {
  position: fixed;
  top: 0; left: 0; bottom: 0;
  width: var(--rail-width);
  padding: 2.2rem 1.5rem 1.5rem;
  border-right: 1px solid rgba(158, 138, 90, 0.4);
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  z-index: 40;
  background: rgba(245, 240, 232, 0.6);
}

.rail-name {
  font-family: var(--font-primary);
  font-size: 0.95rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--ink);
  margin-bottom: 0.3rem;
}

.rail-sub {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 0.78rem;
  color: var(--slate);
  margin-bottom: 1.6rem;
}

.rail a.room-link {
  font-family: var(--font-primary);
  font-size: 0.78rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--slate);
  padding: 0.42rem 0 0.42rem 1rem;
  border-bottom: none;
  border-left: 2px solid transparent;
  transition: color 0.2s, border-color 0.2s;
}

.rail a.room-link:hover { color: var(--ink); }

.rail a.room-link[aria-current="true"] {
  color: var(--ink);
  border-left-color: var(--gold);
}

.rail-foot {
  margin-top: auto;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(158, 138, 90, 0.3);
}

.rail-legend {
  font-family: var(--font-body);
  font-size: 0.75rem;
  color: var(--slate);
  margin-bottom: 0.6rem;
}

.rail-stamp {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 0.75rem;
  color: var(--slate);
}

.rail-stamp button {
  font-family: var(--font-primary);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--oxblood);
  background: none;
  border: none;
  border-bottom: 1px solid var(--oxblood);
  cursor: pointer;
  padding: 0 0 1px;
  margin-left: 0.5rem;
}

/* ============================================
   The page column
   ============================================ */

main {
  margin-left: var(--rail-width);
  padding: 0 clamp(1.1rem, 4vw, 3.5rem) 6rem;
  max-width: calc(var(--rail-width) + 1100px);
}

.api-banner {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 0.92rem;
  color: var(--oxblood);
  border: 1px solid var(--oxblood);
  padding: 0.7rem 1.1rem;
  margin: 1.5rem 0 0;
  background: var(--sheet);
}

/* Room headers — engraved plates */
.room {
  padding: 3.2rem 0 1rem;
}

.room-head {
  display: flex;
  align-items: baseline;
  gap: 1rem;
  border-bottom: 1px solid var(--gold);
  padding-bottom: 0.5rem;
  margin-bottom: 1.6rem;
}

.room-head h2 {
  font-family: var(--font-primary);
  font-weight: 500;
  font-size: 1.12rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--ink);
}

.room-head .room-note {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 0.85rem;
  color: var(--slate);
}

h3.sub-head {
  font-family: var(--font-primary);
  font-weight: 500;
  font-size: 0.85rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold-ink);
  margin: 2.2rem 0 0.9rem;
}

p { text-wrap: pretty; }

.fine {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 0.8rem;
  color: var(--slate);
}

.cite {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 0.75rem;
  color: var(--gold-ink);
}

/* Provenance marks */
.prov { font-style: normal; cursor: help; }
.prov--observed { color: var(--ink); }
.prov--planned { color: var(--gold-ink); }
.prov--unknown { color: var(--slate); }

/* ============================================
   The Desk masthead
   ============================================ */

.masthead {
  text-align: center;
  padding: 3.4rem 0 1rem;
}

.masthead-mark {
  width: 118px;
  height: 139px;
  margin: 0 auto 1.1rem;
  background-color: var(--ink);
  -webkit-mask: url(/assets/virgin-of-quito-mark.svg) center / contain no-repeat;
  mask: url(/assets/virgin-of-quito-mark.svg) center / contain no-repeat;
}

.masthead h1 {
  font-family: var(--font-primary);
  font-weight: 500;
  font-size: 2rem;
  letter-spacing: 0.24em;
  text-transform: uppercase;
  color: var(--ink);
  text-indent: 0.24em;
}

.masthead-fleuron {
  width: 26px;
  height: 26px;
  margin: 0.55rem auto 0.9rem;
  background-color: var(--ink);
  -webkit-mask: url(/assets/fleur-de-lis.svg) center / contain no-repeat;
  mask: url(/assets/fleur-de-lis.svg) center / contain no-repeat;
  opacity: 0.9;
}

.masthead-motto {
  font-family: var(--font-primary);
  font-style: italic;
  font-size: 1.15rem;
  color: var(--ink);
  margin-bottom: 0.8rem;
}

.masthead-phase {
  font-family: var(--font-primary);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--gold-ink);
}

.digests {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2rem;
  max-width: 900px;
  margin: 2.2rem auto 0;
}

.digest {
  font-family: var(--font-primary);
  font-style: italic;
  font-size: 0.98rem;
  line-height: 1.7;
  color: var(--ink);
  text-align: left;
}

.digest .cite { display: block; margin-top: 0.5rem; font-style: italic; }

/* ============================================
   Stat plates — engraved cards
   ============================================ */

.plates {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 1rem;
  margin: 2.4rem 0 0;
}

.plate {
  background: var(--sheet);
  border: 1px solid var(--plate-border);
  outline: 1px solid rgba(158, 138, 90, 0.35);
  outline-offset: -5px;
  padding: 1.1rem 1.1rem 1rem;
  text-align: center;
}

.plate-label {
  font-family: var(--font-primary);
  font-size: 0.68rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold-ink);
  margin-bottom: 0.45rem;
}

.plate-value {
  font-family: var(--font-primary);
  font-variant-numeric: lining-nums;
  font-size: 1.9rem;
  line-height: 1.15;
  color: var(--ink);
}

.plate-note {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 0.74rem;
  color: var(--slate);
  margin-top: 0.4rem;
  line-height: 1.45;
}

/* Validation cards — wider plates with a sentence in them */
.cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1rem;
  margin: 1.2rem 0 0;
}

.card {
  background: var(--sheet);
  border: 1px solid var(--plate-border);
  outline: 1px solid rgba(158, 138, 90, 0.35);
  outline-offset: -5px;
  padding: 1.1rem 1.2rem 1rem;
}

.card .plate-label { text-align: left; }

.card-body {
  font-family: var(--font-body);
  font-size: 0.92rem;
  color: var(--ink);
  line-height: 1.55;
}

.card-rule {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 0.78rem;
  color: var(--gold-ink);
  margin-top: 0.55rem;
  border-top: 1px solid rgba(158, 138, 90, 0.3);
  padding-top: 0.5rem;
  cursor: help;
}

/* ============================================
   Ledger tables — a bookkeeper's page
   ============================================ */

.table-wrap { overflow-x: auto; }

table.ledger {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-body);
  font-size: 0.92rem;
  font-variant-numeric: tabular-nums lining-nums;
}

table.ledger th {
  font-family: var(--font-primary);
  font-weight: 500;
  font-size: 0.68rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--gold-ink);
  text-align: left;
  padding: 0.5rem 0.9rem 0.45rem 0;
  border-bottom: 1px solid var(--gold);
  white-space: nowrap;
}

table.ledger td {
  padding: 0.62rem 0.9rem 0.62rem 0;
  border-bottom: 1px solid rgba(158, 138, 90, 0.28);
  vertical-align: baseline;
  line-height: 1.5;
}

table.ledger td.num, table.ledger th.num { text-align: right; }
table.ledger td.num:last-child, table.ledger th.num:last-child { padding-right: 0; }
table.ledger--narrow { max-width: 620px; }

tr.founder-test td {
  color: var(--slate);
  font-style: italic;
}

.chip {
  display: inline-block;
  font-family: var(--font-primary);
  font-style: normal;
  font-size: 0.62rem;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  padding: 0.14rem 0.5rem 0.1rem;
  border: 1px solid currentColor;
  white-space: nowrap;
}

.chip--active { color: var(--ink); }
.chip--past-due { color: var(--oxblood); }
.chip--canceling, .chip--canceled { color: var(--slate); }

.chip--ruling {
  color: var(--gold-ink);
  border-color: var(--gold);
}

.chip--channel { color: var(--gold-ink); border-color: var(--gold); }

.tag {
  font-family: var(--font-primary);
  font-size: 0.6rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--gold-ink);
  white-space: nowrap;
}

.empty-note {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 0.95rem;
  color: var(--slate);
  padding: 0.9rem 0;
}

/* Day Book */
.daybook { list-style: none; }
.daybook li {
  font-family: var(--font-body);
  font-size: 0.94rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(158, 138, 90, 0.22);
  display: flex;
  gap: 1rem;
  align-items: baseline;
}
.daybook .db-date {
  font-family: var(--font-primary);
  font-variant-numeric: lining-nums;
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  color: var(--gold-ink);
  min-width: 4.4rem;
  white-space: nowrap;
}

/* Twelve-dot gift row */
.dots { letter-spacing: 0.28em; color: var(--gold-ink); font-size: 0.8rem; }
.dots .filled { color: var(--oxblood); }

/* ============================================
   The Writing Desk shelf
   ============================================ */

.shelf {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 1rem;
}

.letter-card {
  background: var(--sheet);
  border: 1px solid var(--gold);
  padding: 1.05rem 1.1rem 0.95rem;
}

.letter-card--lead {
  border: 1px solid var(--plate-border);
  outline: 1px solid rgba(158, 138, 90, 0.35);
  outline-offset: -5px;
}

.letter-no {
  font-family: var(--font-primary);
  font-variant-numeric: lining-nums;
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--gold-ink);
  margin-bottom: 0.3rem;
}

.letter-title {
  font-family: var(--font-primary);
  font-size: 1.02rem;
  line-height: 1.35;
  color: var(--ink);
  margin-bottom: 0.5rem;
}

.letter-meta {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-style: italic;
  color: var(--slate);
  line-height: 1.5;
}

.stet-digest {
  margin-top: 0.7rem;
  padding-top: 0.6rem;
  border-top: 1px solid rgba(158, 138, 90, 0.3);
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
}

/* ============================================
   Charts — hand-inked
   ============================================ */

.chart svg { display: block; max-width: 100%; }
.chart .grid { stroke: var(--gold); stroke-opacity: 0.25; stroke-width: 1; }
.chart .line { stroke: var(--ink); stroke-width: 1.5; fill: none; }
.chart .axis-label {
  font-family: var(--font-primary);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  fill: var(--slate);
}

/* The Map Room funnel */
.funnel-wrap { overflow-x: auto; padding: 0.5rem 0 0.2rem; }
.funnel text {
  font-family: var(--font-primary);
}

/* Docket */
.docket-phase { margin-bottom: 2rem; }

.docket-items { list-style: none; }
.docket-items li {
  display: flex;
  gap: 0.85rem;
  align-items: baseline;
  padding: 0.55rem 0;
  border-bottom: 1px solid rgba(158, 138, 90, 0.22);
  font-size: 0.95rem;
  line-height: 1.55;
}

.docket-box {
  font-family: var(--font-primary);
  color: var(--gold-ink);
  white-space: nowrap;
  font-size: 0.8rem;
}

.docket-items .who { margin-left: auto; padding-left: 1rem; }

details.quiet-record summary {
  font-family: var(--font-body);
  font-style: italic;
  font-size: 0.88rem;
  color: var(--slate);
  cursor: pointer;
  padding: 0.6rem 0;
}

.chips-row { display: flex; flex-wrap: wrap; gap: 0.45rem; margin-top: 0.6rem; }

/* ============================================
   Motion — paper settles, briefly, and only when welcome
   ============================================ */

@media (prefers-reduced-motion: no-preference) {
  .plate, .card, .letter-card {
    animation: settle 0.2s ease-out both;
  }
  @keyframes settle {
    from { opacity: 0; transform: translateY(6px); }
    to { opacity: 1; transform: none; }
  }
}

/* ============================================
   390 — the rail becomes a top strip
   ============================================ */

@media (max-width: 760px) {
  .rail {
    position: sticky;
    top: 0;
    bottom: auto;
    width: 100%;
    flex-direction: row;
    flex-wrap: wrap;
    align-items: baseline;
    gap: 0.1rem 0.9rem;
    padding: 0.7rem 1rem 0.55rem;
    border-right: none;
    border-bottom: 1px solid rgba(158, 138, 90, 0.4);
    background: rgba(245, 240, 232, 0.96);
  }
  .rail-name { font-size: 0.8rem; margin-bottom: 0; }
  .rail-sub { display: none; }
  .rail a.room-link {
    font-size: 0.62rem;
    letter-spacing: 0.12em;
    padding: 0.2rem 0;
    border-left: none;
    border-bottom: 2px solid transparent;
  }
  .rail a.room-link[aria-current="true"] {
    border-left: none;
    border-bottom-color: var(--gold);
  }
  .rail-foot {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
    width: 100%;
    display: flex;
    gap: 1rem;
    align-items: baseline;
  }
  .rail-legend { margin-bottom: 0; font-size: 0.68rem; }
  .rail-stamp { font-size: 0.68rem; }
  main { margin-left: 0; padding: 0 1.05rem 4rem; }
  .digests { grid-template-columns: 1fr; }
  .masthead h1 { font-size: 1.45rem; }
  .room { padding-top: 2.4rem; }
}