:root {
  --desk: #d8cfbd;
  --desk-shade: #c9bea8;
  --paper: #fbf8f1;
  --paper-edge: #efe8da;
  --ink: #1d1b18;
  --ink-soft: #57524a;
  --ink-faint: #8b857a;
  --rule: #e9e2d3;
  --red: #c0392b;
  --blue: #1f4f9d;
  --ochre: #a86a14;
  --grey: #5f6368;
  --q1: #1f4f9d;
  --q2: #2e7d5b;
  --q3: #a86a14;
  --q4: #8a3d7a;
  --shadow: 0 1px 0 rgba(0, 0, 0, .05), 0 2px 3px rgba(40, 30, 10, .08), 0 22px 44px -22px rgba(40, 30, 10, .45);
  --display: "Gloock", "Iowan Old Style", "Palatino Linotype", Georgia, serif;
  --sans: "IBM Plex Sans", "Helvetica Neue", Helvetica, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, "SF Mono", Menlo, Consolas, monospace;
  --grain: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='220' height='220'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='.85' numOctaves='3' stitchTiles='stitch'/%3E%3CfeColorMatrix values='0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 .09 0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --desk: #131416;
    --desk-shade: #0d0e10;
    --paper: #1e2024;
    --paper-edge: #26292e;
    --ink: #ebe5d8;
    --ink-soft: #b3ac9e;
    --ink-faint: #7d786e;
    --rule: #2a2d33;
    --red: #ff6f5e;
    --blue: #86a8ff;
    --ochre: #e3a64a;
    --grey: #a4a9b0;
    --q1: #86a8ff;
    --q2: #6fcf9f;
    --q3: #e3a64a;
    --q4: #d98fc9;
    --shadow: 0 1px 0 rgba(255, 255, 255, .03), 0 24px 50px -20px rgba(0, 0, 0, .8);
    color-scheme: dark;
  }
}

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

[hidden] { display: none !important; }

html { background: var(--desk); }

body {
  margin: 0;
  min-height: 100vh;
  padding: 0 clamp(16px, 4vw, 56px);
  color: var(--ink);
  font: 400 15px/1.55 var(--sans);
  background:
    var(--grain),
    radial-gradient(1200px 700px at 12% -10%, var(--desk) 0%, var(--desk-shade) 100%);
  -webkit-font-smoothing: antialiased;
}

code, kbd, pre, textarea { font-family: var(--mono); }

a { color: inherit; text-decoration-color: var(--red); text-underline-offset: 3px; }
a:hover { color: var(--red); }

/* ------------------------------------------------------------ masthead */

.masthead {
  max-width: 1280px;
  margin: 0 auto;
  padding-block: 34px 26px;
  animation: rise .7s cubic-bezier(.2, .8, .2, 1) both;
}

.letterhead {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-bottom: 12px;
  border-bottom: 3px double var(--ink);
}

.wordmark { font: 30px/1 var(--display); letter-spacing: -.01em; }
.comma { color: var(--red); }

.memo-meta {
  font: 500 11px/1 var(--mono);
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--ink-soft);
}

h1 {
  margin: 26px 0 8px;
  font: 400 clamp(40px, 7.2vw, 88px)/.98 var(--display);
  letter-spacing: -.02em;
}

.typo {
  text-decoration: underline wavy var(--red);
  text-decoration-thickness: .045em;
  text-underline-offset: .12em;
  text-decoration-skip-ink: none;
}

.dek { max-width: 560px; margin: 0; color: var(--ink-soft); font-size: 17px; }
.dek code { font-size: .92em; }

.links { display: flex; flex-wrap: wrap; gap: 8px 22px; margin-top: 16px; font-size: 14px; }
.links code { font-size: 13px; }

/* ------------------------------------------------------------ desk */

.desk {
  max-width: 1280px;
  margin: 8px auto 0;
  display: grid;
  grid-template-columns: minmax(0, 1.12fr) minmax(0, .88fr);
  gap: clamp(22px, 3.2vw, 44px);
  align-items: start;
}

.sheet {
  position: relative;
  background: var(--paper);
  border: 1px solid var(--paper-edge);
  border-radius: 3px;
  box-shadow: var(--shadow);
}

.compose { transform: rotate(-.35deg); animation: rise .8s .08s cubic-bezier(.2, .8, .2, 1) both; }
.reply { margin-top: 56px; transform: rotate(.55deg); animation: rise .8s .18s cubic-bezier(.2, .8, .2, 1) both; }

.sheet-head { padding: 18px 22px 10px; border-bottom: 1px solid var(--rule); }

.sheet-head h2 {
  margin: 0 0 10px;
  font: 600 11px/1 var(--mono);
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.field {
  display: grid;
  grid-template-columns: 44px minmax(0, 1fr);
  align-items: center;
  min-height: 34px;
  border-top: 1px dashed var(--rule);
}

.field .label { font: 500 13px/1 var(--sans); color: var(--ink-faint); }
.field .value { font: 500 14px/1.3 var(--sans); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

select.value {
  appearance: none;
  width: 100%;
  padding: 7px 28px 7px 0;
  border: 0;
  color: var(--ink);
  background: transparent url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='10' height='6'%3E%3Cpath d='M0 0l5 6 5-6z' fill='%238b857a'/%3E%3C/svg%3E") no-repeat right 6px center;
  cursor: pointer;
}
select.value option { color: #1d1b18; background: #fbf8f1; }

/* ------------------------------------------------------------ attachment */

.attachment {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 12px 22px 0;
  padding: 8px 12px;
  border: 1px solid var(--rule);
  border-radius: 999px;
  background: var(--paper-edge);
  font-size: 14px;
}
.attachment #attachment-name { font-family: var(--mono); font-size: 13px; }
.attachment .link { margin-left: auto; }

/* ------------------------------------------------------------ editor */

.editor {
  position: relative;
  height: clamp(360px, 56vh, 640px);
  margin: 12px 0 0;
}

.editor textarea, .editor .highlight {
  position: absolute;
  inset: 0;
  margin: 0;
  padding: 12px 22px 24px 22px;
  border: 0;
  font: 400 14px/24px var(--mono);
  tab-size: 2;
  white-space: pre;
  overflow-wrap: normal;
  letter-spacing: 0;
}

.editor .highlight {
  overflow: hidden;
  color: var(--ink);
  background-image: repeating-linear-gradient(to bottom, transparent 0 23px, var(--rule) 23px 24px);
  background-position: 0 12px;
  background-attachment: local;
  pointer-events: none;
}

.editor textarea {
  resize: none;
  overflow: auto;
  color: transparent;
  background: transparent;
  caret-color: var(--red);
  outline: none;
}
.editor textarea::selection { color: transparent; background: rgba(192, 57, 43, .18); }
.editor:focus-within { box-shadow: inset 3px 0 0 var(--red); }

.highlight .q { font-weight: 600; }
.highlight .q1 { color: var(--q1); }
.highlight .q2 { color: var(--q2); }
.highlight .q3 { color: var(--q3); }
.highlight .q4 { color: var(--q4); }
.highlight .hdr { color: var(--ink-faint); }
.highlight .greet, .highlight .signoff { font-weight: 600; }
.highlight .signoff { color: var(--red); }
.highlight .thread { color: var(--ink-soft); font-style: italic; }
.highlight .comment { color: var(--ink-faint); font-style: italic; }
.highlight .pragma { color: var(--ochre); font-style: italic; }
.highlight .str { color: var(--blue); }

.cover, .dropzone {
  position: absolute;
  inset: 0;
  display: none;
  place-items: center;
  padding: 24px;
  text-align: center;
  font: 400 20px/1.3 var(--display);
}
.editor.covered .cover {
  display: grid;
  color: var(--ink-soft);
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: blur(2px);
}
.dropzone:not([hidden]) {
  display: grid;
  pointer-events: none;
  color: var(--red);
  border: 2px dashed var(--red);
  background: color-mix(in srgb, var(--paper) 80%, transparent);
}

/* ------------------------------------------------------------ input + actions */

.input { margin: 0 22px; border-top: 1px solid var(--rule); }
.input summary {
  padding: 12px 0;
  cursor: pointer;
  font: 500 13px/1.3 var(--sans);
  color: var(--ink-soft);
}
.input .hint { margin-left: 6px; color: var(--ink-faint); font-weight: 400; }
.input .hint code { font-size: 12px; }
.input textarea {
  display: block;
  width: 100%;
  margin-bottom: 12px;
  padding: 10px 12px;
  border: 1px solid var(--rule);
  border-radius: 3px;
  color: var(--ink);
  background: var(--paper-edge);
  font-size: 13px;
  line-height: 1.5;
  resize: vertical;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 18px;
  padding: 14px 22px 18px;
  border-top: 1px solid var(--rule);
}

.send {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 11px 18px 11px 20px;
  border: 0;
  border-radius: 3px;
  color: var(--paper);
  background: var(--ink);
  font: 600 15px/1 var(--sans);
  letter-spacing: .01em;
  cursor: pointer;
  box-shadow: 0 2px 0 var(--red);
  transition: transform .15s ease, box-shadow .15s ease;
}
.send:hover { transform: translateY(-1px); box-shadow: 0 3px 0 var(--red); }
.send:active { transform: translateY(1px); box-shadow: 0 1px 0 var(--red); }
.send:disabled { cursor: progress; opacity: .8; }
.send.sending { animation: pulse 1s ease-in-out infinite; }
.send kbd {
  padding: 3px 6px;
  border-radius: 3px;
  background: color-mix(in srgb, var(--paper) 16%, transparent);
  font-size: 11px;
  font-weight: 400;
}

.attach-button { position: relative; font-size: 14px; color: var(--ink-soft); cursor: pointer; }
.attach-button:hover { color: var(--red); }
.attach-button input { position: absolute; width: 1px; height: 1px; opacity: 0; }
.attach-button:focus-within { outline: 2px solid var(--red); outline-offset: 3px; }

.link {
  padding: 0;
  border: 0;
  color: var(--ink-soft);
  background: none;
  font: 400 14px/1.3 var(--sans);
  text-decoration: underline;
  text-decoration-color: var(--rule);
  text-underline-offset: 3px;
  cursor: pointer;
}
.link:hover { color: var(--red); text-decoration-color: var(--red); }
.actions .link { margin-left: auto; }

button:focus-visible, select:focus-visible, summary:focus-visible, a:focus-visible {
  outline: 2px solid var(--red);
  outline-offset: 3px;
}

/* ------------------------------------------------------------ reply */

.reply-body { min-height: 260px; padding: 18px 22px 8px; }
.reply-body > * { margin: 0 0 14px; }
.reply.arrived .reply-body > * { animation: rise .5s cubic-bezier(.2, .8, .2, 1) both; }
.reply.arrived .reply-body > *:nth-child(2) { animation-delay: .06s; }
.reply.arrived .reply-body > *:nth-child(3) { animation-delay: .12s; }
.reply.arrived .reply-body > *:nth-child(4) { animation-delay: .18s; }
.reply.arrived .reply-body > *:nth-child(5) { animation-delay: .24s; }

.salutation { font: 400 22px/1.2 var(--display); }
.quiet { color: var(--ink-faint); font-style: italic; }

.output {
  max-height: 46vh;
  overflow: auto;
  padding: 12px 14px;
  border-left: 3px solid var(--ink);
  background: var(--paper-edge);
  font-size: 13.5px;
  line-height: 1.55;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}

.complaint { color: var(--red); font: 400 18px/1.35 var(--display); }
.complaint p { margin: 0 0 6px; }
.complaint code, .ps code { font-size: .78em; }

.ps { padding: 0; list-style: none; font-size: 14px; color: var(--ink-soft); }
.ps li { margin-bottom: 4px; }
.ps li span { font: 600 12px/1 var(--mono); color: var(--ochre); letter-spacing: .06em; }

.closing { font: 400 18px/1.35 var(--display); }

.reply-foot {
  padding: 10px 22px 16px;
  border-top: 1px solid var(--rule);
  font: 400 12px/1.4 var(--mono);
  color: var(--ink-faint);
}
.reply-foot:empty { display: none; }

.stamp {
  position: absolute;
  top: 16px;
  right: 18px;
  z-index: 2;
  padding: 7px 14px 5px;
  border: 3px solid currentColor;
  border-radius: 6px;
  color: var(--blue);
  font: 400 24px/1 var(--display);
  letter-spacing: .06em;
  text-transform: uppercase;
  white-space: nowrap;
  transform: rotate(-8deg);
  opacity: .86;
  pointer-events: none;
  mix-blend-mode: multiply;
  -webkit-mask-image: var(--grain), linear-gradient(#000, #000);
  mask-image: linear-gradient(#000, #000);
}
.stamp[data-ink="red"] { color: var(--red); }
.stamp[data-ink="ochre"] { color: var(--ochre); }
.stamp[data-ink="grey"] { color: var(--grey); }
.stamp.slam { animation: slam .55s cubic-bezier(.3, 1.4, .5, 1) both; }

@media (prefers-color-scheme: dark) {
  .stamp { mix-blend-mode: screen; }
}

/* ------------------------------------------------------------ colophon */

.colophon {
  max-width: 1280px;
  margin: 56px auto 0;
  padding-block: 18px 34px;
  border-top: 1px solid color-mix(in srgb, var(--ink) 18%, transparent);
  color: var(--ink-soft);
  font-size: 13px;
}

/* ------------------------------------------------------------ motion */

@keyframes rise {
  from { opacity: 0; translate: 0 14px; }
  to { opacity: 1; translate: 0 0; }
}

@keyframes slam {
  0% { opacity: 0; transform: scale(2.6) rotate(-22deg); filter: blur(2px); }
  55% { opacity: .95; transform: scale(.94) rotate(-6deg); filter: blur(0); }
  78% { transform: scale(1.03) rotate(-9deg); }
  100% { opacity: .86; transform: scale(1) rotate(-8deg); }
}

@keyframes pulse {
  50% { box-shadow: 0 2px 0 var(--red), 0 0 0 6px color-mix(in srgb, var(--red) 18%, transparent); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

/* ------------------------------------------------------------ narrow screens */

@media (max-width: 900px) {
  .desk { grid-template-columns: minmax(0, 1fr); }
  .compose, .reply { transform: none; }
  .reply { margin-top: 0; }
  .stamp { font-size: 19px; }
  .editor { height: 52vh; }
}