:root {
  --paper: #e7dece;
  --desk: #d4c6b0;
  --sheet: #fbf7ef;
  --ink: #1c1814;
  --muted: #6d6457;
  --rule: #cbbda8;
  --oxblood: #8b3d2e;
  --oxblood-dark: #6c2e22;
  --gold: #a67c3a;
  --radius-2: 2px;
  --radius-6: 6px;
  --radius-12: 12px;
  --display: "Fraunces", "Iowan Old Style", Palatino, Georgia, serif;
  --ui: "Public Sans", "Segoe UI", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--paper);
  color: var(--ink);
  font-family: var(--ui);
  font-size: 14px;
  line-height: 1.45;
}

body {
  background-image:
    radial-gradient(ellipse 80% 50% at 0% 0%, rgba(139, 61, 46, 0.07), transparent 50%),
    linear-gradient(180deg, #efe6d6 0%, var(--paper) 28%);
}

.app {
  display: grid;
  grid-template-columns: minmax(320px, 420px) 1fr;
  min-height: 100vh;
}

/* ---- desk (form) ---- */
.desk {
  background: #f3ece0;
  border-right: 1px solid var(--rule);
  padding: 28px 22px 48px;
  overflow: auto;
}

.brand {
  margin-bottom: 22px;
}

.brand .eyebrow {
  font-size: 11px;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--oxblood);
  font-weight: 600;
  margin: 0 0 6px;
}

.brand h1 {
  font-family: var(--display);
  font-size: 32px;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin: 0 0 6px;
  line-height: 1.05;
}

.brand p {
  margin: 0;
  color: var(--muted);
  font-size: 13.5px;
}

.brand a {
  color: var(--ink);
  text-underline-offset: 2px;
}

.ticket {
  display: flex;
  flex-direction: column;
  gap: 18px;
}

.block {
  border-top: 1px solid var(--rule);
  padding-top: 14px;
}

.block-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 10px;
}

.num {
  font-family: var(--display);
  font-size: 12px;
  color: var(--gold);
  letter-spacing: 0.08em;
}

.block h2 {
  margin: 0;
  font-size: 11px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--ink);
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.full { grid-column: 1 / -1; }

label.field {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 11px;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.04em;
}

input[type="text"],
input[type="email"],
input[type="url"],
input[type="tel"],
select,
textarea {
  font-family: var(--ui);
  font-size: 13.5px;
  font-weight: 400;
  letter-spacing: 0;
  color: var(--ink);
  background: var(--sheet);
  border: 1px solid var(--rule);
  border-radius: var(--radius-2);
  padding: 8px 10px;
  width: 100%;
}

textarea { min-height: 72px; resize: vertical; line-height: 1.5; }

input::placeholder,
textarea::placeholder {
  color: #9a9083;
}

input:focus,
select:focus,
textarea:focus {
  outline: 2px solid rgba(139, 61, 46, 0.35);
  outline-offset: 1px;
  border-color: var(--oxblood);
}

.hint {
  font-size: 11px;
  font-weight: 400;
  color: var(--muted);
  letter-spacing: 0;
  margin-top: 2px;
}

.logo-row,
.color-row {
  display: flex;
  gap: 6px;
  align-items: center;
}

.logo-row input { flex: 1; }

.upload {
  font-family: var(--ui);
  font-size: 12px;
  font-weight: 600;
  padding: 8px 10px;
  background: #ebe2d2;
  border: 1px solid var(--rule);
  border-radius: var(--radius-2);
  cursor: pointer;
  white-space: nowrap;
}

.upload:hover { background: #e3d8c4; }

input[type="color"] {
  width: 42px;
  height: 36px;
  padding: 2px;
  border: 1px solid var(--rule);
  background: var(--sheet);
  cursor: pointer;
  border-radius: var(--radius-2);
}

.swatches {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
  margin-top: 8px;
}

.swatch {
  width: 22px;
  height: 22px;
  border: 1px solid rgba(0,0,0,.15);
  border-radius: var(--radius-2);
  cursor: pointer;
  padding: 0;
}

.swatch[aria-pressed="true"] {
  outline: 2px solid var(--ink);
  outline-offset: 1px;
}

.check {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 8px;
}

.check input { width: 15px; height: 15px; accent-color: var(--oxblood); }

.layouts {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 6px;
}

.layout {
  border: 1px solid var(--rule);
  background: var(--sheet);
  border-radius: var(--radius-2);
  padding: 8px 6px 7px;
  cursor: pointer;
  text-align: center;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

.layout[aria-pressed="true"] {
  border-color: var(--ink);
  color: var(--ink);
  background: #fff;
}

.layout svg { display: block; margin: 0 auto 6px; }

.desk-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 6px;
}

.btn {
  font-family: var(--ui);
  font-size: 13px;
  font-weight: 600;
  border: 0;
  border-radius: var(--radius-2);
  padding: 10px 14px;
  cursor: pointer;
}

.btn-primary {
  background: var(--oxblood);
  color: #fbf7ef;
}

.btn-primary:hover { background: var(--oxblood-dark); }

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--rule);
}

.btn-ghost:hover { background: #ebe2d2; }

.btn.ok { background: #2f6b45; color: #fff; border-color: #2f6b45; }

.tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
  margin: 8px 0 10px;
}

.tab {
  background: transparent;
  border: 0;
  border-bottom: 2px solid transparent;
  padding: 6px 8px;
  font-family: var(--ui);
  font-size: 12px;
  font-weight: 600;
  color: var(--muted);
  cursor: pointer;
}

.tab[aria-selected="true"] {
  color: var(--ink);
  border-bottom-color: var(--oxblood);
}

.guide {
  display: none;
  font-size: 13px;
  color: var(--ink);
}

.guide.on { display: block; }

.guide ol {
  margin: 0;
  padding-left: 18px;
  line-height: 1.55;
}

.guide li { margin-bottom: 4px; }

.desk-foot {
  margin-top: 28px;
  font-size: 12px;
  color: var(--muted);
}

.desk-foot a { color: var(--ink); }

/* ---- proof (preview) ---- */
.proof {
  padding: 36px 32px 48px;
  display: flex;
  flex-direction: column;
  min-width: 0;
  position: sticky;
  top: 0;
  align-self: start;
  max-height: 100vh;
  overflow: auto;
}

.proof-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.proof-bar h2 {
  font-family: var(--display);
  font-size: 22px;
  font-weight: 500;
  margin: 0;
}

.mode {
  display: flex;
  background: #efe6d6;
  border: 1px solid var(--rule);
  border-radius: var(--radius-2);
  padding: 2px;
}

.mode button {
  font-family: var(--ui);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border: 0;
  background: transparent;
  color: var(--muted);
  padding: 5px 10px;
  cursor: pointer;
  border-radius: 1px;
}

.mode button[aria-pressed="true"] {
  background: var(--sheet);
  color: var(--ink);
}

.proof-hint {
  margin: -8px 0 12px;
  font-size: 12px;
  color: var(--muted);
}

.letter {
  background: var(--sheet);
  border: 1px solid #cfc3ae;
  border-radius: var(--radius-6);
  box-shadow: 0 1px 0 #fff inset, 0 18px 40px rgba(60, 40, 16, 0.12);
  max-width: 720px;
  overflow: hidden;
}

.letter.dark {
  background: #2f2c28;
  border-color: #3d3933;
  color: #ece6db;
}

.letter-meta {
  padding: 16px 22px 12px;
  border-bottom: 1px solid var(--rule);
  font-size: 12.5px;
  color: var(--muted);
}

.letter.dark .letter-meta { border-bottom-color: #3a352e; color: #b7ae9f; }

.letter-meta strong { color: var(--ink); font-weight: 600; }
.letter.dark .letter-meta strong { color: #f3ece0; }

.letter-body {
  padding: 18px 22px 8px;
  font-family: Georgia, "Times New Roman", serif;
  font-size: 15px;
  color: #3a342c;
  line-height: 1.55;
}

.letter.dark .letter-body { color: #d9d0c2; }

.letter-body p { margin: 0 0 10px; }

.sig-stage {
  padding: 8px 22px 24px;
  overflow-x: auto;
}

.placeholder {
  font-family: var(--ui);
  font-size: 13px;
  color: var(--muted);
  padding: 12px 0;
}

@media (max-width: 900px) {
  .app { grid-template-columns: 1fr; }
  .desk { border-right: 0; border-bottom: 1px solid var(--rule); max-height: none; }
  .proof { padding: 22px 16px 40px; }
  .grid { grid-template-columns: 1fr; }
}