/* ══════════════════════════════════════════════════════
   contact.css — Correspondence (Plate V of the atlas)
   Builds on atlas.css. The page body is .atlas--nocturne:
   the Expertise atlas re-inked as a night chart. The letter
   itself is .on-paper, the one object printed on day paper,
   so the form keeps the atlas's most legible pairing:
   cobalt ink on laid paper (9.5:1).
══════════════════════════════════════════════════════ */

.contact-atlas {
  --error: #8a2f3b;          /* 7.1:1 on day paper */
  --placeholder: #5a6a90;    /* 4.6:1 on day paper */
}

#correspondence {
  position: relative;
  isolation: isolate;
  overflow-x: clip;
  padding-top: var(--site-header-height);
}

/* ── the celestial chart behind the opening ──────── */
.star-chart {
  position: absolute;
  z-index: -1;
  top: var(--site-header-height);
  left: 0;
  width: 100%;
  height: 900px;
  pointer-events: none;
  color: var(--ink);
}
.chart-circles { fill: none; stroke: rgba(var(--ink-rgb), .16); stroke-width: 1; }
.chart-lines { fill: none; stroke: rgba(var(--ink-rgb), .34); stroke-width: .8; stroke-dasharray: 3 4; }
.chart-stars { fill: rgba(var(--ink-rgb), .85); }
.chart-dust { fill: rgba(var(--ink-rgb), .55); }
.chart-labels { fill: rgba(var(--ink-rgb), .55); font: italic 500 16px var(--serif); letter-spacing: .02em; }

/* ── opening ─────────────────────────────────────── */
.correspondence-opening {
  position: relative;
  max-width: 1440px;
  margin: 0 auto;
  padding: 32px var(--gutter) 8px;
  text-align: center;
}
.carrier {
  display: block;
  width: 128px;
  height: auto;
  margin: 44px auto 6px;
  overflow: hidden;
}
.correspondence-opening .atlas-eyebrow { margin: 10px 0 22px; }
.correspondence-opening h1 { letter-spacing: -.044em; }
.correspondence-opening .opening-line { margin: 26px auto 0; color: var(--ink-soft); }

/* ── the desk: letter + marginalia ───────────────── */
.correspondence-desk {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 270px;
  gap: 64px;
  align-items: start;
  max-width: 1160px;
  margin: 64px auto 0;
  padding: 0 var(--gutter) 120px;
}

/* ── the letter ──────────────────────────────────── */
.letter {
  position: relative;
  padding: 40px 48px 44px;
  border: 1px solid var(--hairline-strong);
  /* paper margin + a pale frame drawn on the night, then a deep drop */
  box-shadow:
    0 0 0 5px var(--paper),
    0 0 0 6px rgba(239, 231, 214, .38),
    0 50px 90px -40px rgba(3, 10, 28, .85);
}
.letter[hidden] { display: none; }
.letter-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  padding-bottom: 22px;
  border-bottom: 1px solid var(--hairline);
}
.letter-kicker { font: italic 500 18px/1.25 var(--serif); color: var(--ink-soft); }
.letter-head h2 {
  margin-top: 6px;
  font-size: clamp(32px, 2.6vw + 8px, 42px);
  font-weight: 500;
  line-height: 1.05;
  letter-spacing: -.02em;
}
.postmark {
  flex: none;
  width: 104px;
  height: 104px;
  margin: -12px -14px 0 0;
  transform: rotate(-9deg);
  fill: none;
  stroke: rgba(var(--ink-rgb), .55);
  stroke-width: 1;
  overflow: visible;
}
.postmark text { fill: var(--ink-soft); stroke: none; font: 500 8.6px var(--sans); letter-spacing: .14em; }
.postmark-star { fill: rgba(var(--ink-rgb), .7); stroke: none; }
.postmark-waves { stroke: rgba(var(--ink-rgb), .45); }

/* shared field chrome */
.field > label,
.regarding > legend {
  display: block;
  margin-bottom: 8px;
  font: 500 var(--t-micro)/1.3 var(--sans);
  letter-spacing: var(--track-caps);
  text-transform: uppercase;
  color: var(--ink-soft);
}
.optional { margin-left: 8px; font: italic 500 15px var(--serif); letter-spacing: 0; text-transform: none; }

.entry {
  display: block;
  width: 100%;
  min-width: 0;
  min-height: 48px;
  padding: 8px 2px;
  border: 0;
  border-bottom: 1px solid var(--hairline-strong);
  border-radius: 0;
  background: transparent;
  color: var(--ink);
  font: 500 20px/1.4 var(--serif);
  transition: border-color .2s var(--ease), box-shadow .2s var(--ease);
}
.entry::placeholder { color: var(--placeholder); opacity: 1; font-style: italic; }
.entry:hover { border-bottom-color: var(--ink); }
.atlas .entry:focus-visible {
  outline: none;
  border-bottom-color: var(--ink);
  box-shadow: 0 2px 0 var(--ink);
}
.entry[aria-invalid="true"] { border-bottom-color: var(--error); box-shadow: 0 2px 0 var(--error); }

/* the letter body is written on ruled lines */
.entry--ruled {
  --rule: 36px;
  min-height: calc(var(--rule) * 8 + 4px);
  padding: 2px 2px 0;
  border-bottom: 0;
  line-height: var(--rule);
  resize: vertical;
  background-image: repeating-linear-gradient(to bottom, transparent 0 calc(var(--rule) - 1px), var(--hairline) calc(var(--rule) - 1px) var(--rule));
  background-position: 0 2px;
  background-attachment: local;
}
.atlas .entry--ruled:focus-visible { box-shadow: -14px 0 0 -12px var(--ink); }
.entry--ruled[aria-invalid="true"] { box-shadow: -14px 0 0 -12px var(--error); }

.field-error { margin-top: 8px; font: 500 var(--t-small)/1.4 var(--sans); color: var(--error); }
.field-error[hidden] { display: none; }

/* regarding: engraved tags, one may be chosen */
.regarding { margin-top: 28px; border: 0; padding: 0; min-width: 0; }
.regarding legend { padding: 0; }
.regarding-options { display: flex; flex-wrap: wrap; gap: 10px; margin-top: 4px; }
.regarding-options label { position: relative; cursor: pointer; }
.regarding-options input { position: absolute; inset: 0; opacity: 0; margin: 0; cursor: pointer; }
.regarding-options span {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 44px;
  padding: 0 16px;
  border: 1px solid var(--hairline-strong);
  font: 500 18px/1 var(--serif);
  color: var(--ink);
  transition: background .2s var(--ease), color .2s var(--ease), border-color .2s var(--ease);
}
.regarding-options span::before {
  content: '';
  width: 0;
  height: 10px;
  background: currentColor;
  clip-path: polygon(50% 0, 62% 38%, 100% 50%, 62% 62%, 50% 100%, 38% 62%, 0 50%, 38% 38%);
  transition: width .2s var(--ease);
}
.regarding-options label:hover span { border-color: var(--ink); }
.regarding-options input:checked + span { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.regarding-options input:checked + span::before { width: 10px; }
.regarding-options input:focus-visible + span { outline: 2px solid var(--ink); outline-offset: 3px; }
.regarding-origin { margin-top: 12px; font: italic 500 17px/1.3 var(--serif); color: var(--ink-soft); }
.regarding-origin[hidden] { display: none; }

.field--message { margin-top: 30px; }

/* who and where to reply */
.letter-close {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px 32px;
  margin-top: 28px;
}

.send-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 18px 28px;
  margin-top: 36px;
}
.atlas .seal-button {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  min-height: 52px;
  padding: 0 28px;
  border: 0;
  border-radius: 1px;
  background: var(--ink);
  color: var(--paper);
  box-shadow: 0 0 0 3px var(--paper), 0 0 0 4px var(--ink);
  font: 500 var(--t-note)/1 var(--sans);
  letter-spacing: .03em;
  text-decoration: none;
  transition: transform .2s var(--ease), box-shadow .2s var(--ease);
}
.seal-button:hover { transform: translateY(-1px); box-shadow: 0 0 0 3px var(--paper), 0 0 0 4px var(--ink), 0 14px 24px -14px rgba(var(--ink-rgb), .7); }
.seal-button:disabled { opacity: .6; cursor: progress; transform: none; }
.seal-button svg { transition: transform .2s var(--ease); }
.seal-button:hover svg { transform: translateX(3px); }
.atlas .seal-button:focus-visible { outline: 2px solid var(--ink); outline-offset: 7px; }
.send-note { flex: 1 1 260px; font: 400 var(--t-small)/1.55 var(--sans); color: var(--ink-soft); }

/* ── handoff ─────────────────────────────────────── */
.handoff-heading {
  margin-top: 8px;
  font-size: clamp(38px, 3vw + 12px, 52px);
  font-weight: 400;
  font-style: italic;
  line-height: 1;
  letter-spacing: -.02em;
}
.handoff-heading:focus { outline: none; }
.handoff-detail { max-width: 52ch; margin-top: 16px; font-size: var(--t-body); line-height: 1.5; }
.letter .handoff-note {
  margin-top: 22px;
  padding: 14px 16px;
  border: 1px solid var(--hairline-strong);
  background: var(--paper-raised);
  font: 400 var(--t-note)/1.6 var(--sans);
  resize: vertical;
}
.handoff-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 16px 28px; margin-top: 26px; }
.handoff-status { min-height: 1.4em; margin-top: 14px; font: 500 var(--t-small)/1.4 var(--sans); color: var(--ink); }

/* ── marginalia (on the night) ───────────────────── */
.marginalia { display: grid; gap: 36px; padding-top: 8px; }
.marginalia .atlas-eyebrow { margin-bottom: 12px; }
.marginalia ol { list-style: none; counter-reset: note; display: grid; gap: 8px; }
.marginalia li { counter-increment: note; display: flex; gap: 12px; font-size: 19px; line-height: 1.35; }
.marginalia li::before { content: counter(note, lower-roman) '.'; flex: none; width: 1.6em; font-style: italic; color: var(--ink-soft); }
.marginalia p { font-size: 19px; line-height: 1.4; }
.marginalia .ink-link { display: flex; justify-content: space-between; width: 100%; }
.marginalia .ink-link + .ink-link { margin-top: 4px; }
.margin-note { margin-top: 12px; font-size: 20px; font-style: italic; line-height: 1.3; color: var(--ink-soft); transform: rotate(-5deg); }
.margin-note span { display: block; margin: 8px 0 0 70px; font-size: 30px; font-style: normal; }

.noscript-note { max-width: 560px; margin: 0 auto 60px; padding: 0 24px; text-align: center; font-size: var(--t-body); }

/* the envelope that lifts away when the letter is sealed */
.fly-envelope {
  position: fixed;
  z-index: 50;
  left: 50%;
  bottom: 22%;
  width: 56px;
  height: auto;
  opacity: 0;
  pointer-events: none;
  fill: none;
  stroke: var(--ink);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

/* ── footer on the night ─────────────────────────── */
.contact-atlas .atlas-footer { margin-top: 0; }
.contact-atlas .footer-note span { margin-left: 30px; }

/* ══════════════════════════════════════════════════ */
@media (max-width: 960px) {
  .correspondence-desk { grid-template-columns: minmax(0, 1fr); gap: 56px; max-width: 720px; }
  .marginalia { grid-template-columns: 1fr 1fr; gap: 32px 40px; }
  .margin-note { display: none; }
  .chart-labels { display: none; }
}
@media (max-width: 860px) {
  #correspondence { padding-top: var(--site-header-height-mobile); }
  .star-chart { top: var(--site-header-height-mobile); height: 760px; }
}
@media (max-width: 620px) {
  .correspondence-opening { padding: 24px 22px 0; }
  .carrier { width: 104px; margin-top: 34px; }
  .correspondence-opening h1 { font-size: clamp(44px, 12vw, 60px); line-height: 1.02; }
  .correspondence-opening .opening-line { max-width: 300px; margin-top: 20px; }
  .star-chart { height: 620px; }
  .correspondence-desk { margin-top: 44px; padding: 0 16px 80px; gap: 48px; }
  .letter { padding: 26px 20px 30px; }
  .letter-head { gap: 12px; padding-bottom: 18px; }
  .letter-kicker { font-size: 16px; }
  .postmark { width: 72px; height: 72px; margin: -8px -6px 0 0; }
  .regarding-options { gap: 8px; }
  .regarding-options span { padding: 0 13px; font-size: 17px; }
  .letter-close { grid-template-columns: 1fr; gap: 18px; }
  .entry { font-size: 19px; }
  .send-row { flex-direction: column; align-items: stretch; }
  .seal-button { justify-content: center; }
  .send-note { flex-basis: auto; }
  .handoff-actions { flex-direction: column; align-items: stretch; }
  .handoff-actions .seal-button { justify-content: center; }
  .marginalia { grid-template-columns: 1fr; padding-inline: 6px; }
}

@media (prefers-reduced-motion: reduce) {
  .fly-envelope { display: none; }
}