.tool-overlay-write_a_letter .tool-panel {
  width: min(1040px, calc(100vw - 24px));
  max-width: min(1040px, calc(100vw - 24px));
  height: min(96dvh, 980px);
}

.tool-overlay-write_a_letter .tool-panel-body {
  padding: 0;
}

.write-letter-app {
  padding: 18px 20px 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  background:
    radial-gradient(circle at top right, rgba(245, 210, 213, 0.45), transparent 32%),
    radial-gradient(circle at left bottom, rgba(190, 224, 221, 0.48), transparent 34%),
    linear-gradient(180deg, #fbfcfe 0%, #f2f6fb 100%);
  color: #24323b;
}

.write-letter-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
}

.write-letter-eyebrow {
  margin: 0 0 4px;
  font-size: 11px;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: #6b8393;
  font-weight: 800;
}

.write-letter-header h3,
.write-letter-completed h4 {
  margin: 0;
  font: 800 clamp(20px, 3vw, 28px)/1.08 Arial, Helvetica, sans-serif;
  color: #20313f;
}

.write-letter-tabs {
  display: inline-flex;
  gap: 8px;
  background: rgba(220, 229, 238, .65);
  padding: 5px;
  border-radius: 999px;
  width: fit-content;
}

.write-letter-tab {
  border: 0;
  background: transparent;
  color: #48606d;
  border-radius: 999px;
  padding: 8px 14px;
  font-weight: 700;
  cursor: pointer;
}

.write-letter-tab.is-active {
  background: white;
  color: #20313f;
  box-shadow: 0 8px 20px rgba(39, 61, 82, .08);
}

.write-letter-pane {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.write-letter-recipient-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 56px;
  gap: 12px;
  align-items: center;
}

.write-letter-visibility {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  width: fit-content;
  max-width: 100%;
  padding: 9px 12px;
  border-radius: 999px;
  border: 1px solid rgba(89, 111, 128, .16);
  background: rgba(255, 255, 255, .78);
  color: #314652;
  font-size: 14px;
  font-weight: 700;
  line-height: 1.3;
}

.write-letter-visibility input {
  width: 18px;
  height: 18px;
  margin: 0;
  accent-color: #496d83;
  flex: 0 0 auto;
}

.write-letter-to-field,
.write-letter-body-field {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.write-letter-to-field > span,
.write-letter-body-field > span {
  font-size: 12px;
  font-weight: 800;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: #6a7c88;
}

.write-letter-to-field input,
.write-letter-body-field textarea {
  width: 100%;
  border: 1px solid rgba(89, 111, 128, .22);
  border-radius: 18px;
  background: rgba(255, 255, 255, .92);
  color: #20313f;
  font: 500 16px/1.5 Arial, Helvetica, sans-serif;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, .72);
}

.write-letter-to-field input {
  min-height: 52px;
  padding: 0 16px;
}

.write-letter-body-field textarea {
  min-height: 380px;
  resize: vertical;
  padding: 16px;
}

.write-letter-reaction-badge {
  width: 50px;
  height: 50px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  background: linear-gradient(180deg, #fff 0%, #eef3f8 100%);
  border: 1px solid rgba(89, 111, 128, .16);
  box-shadow: 0 12px 30px rgba(32, 49, 63, .08);
  font-size: 30px;
  line-height: 1;
  animation: write-letter-breathe 2.4s ease-in-out infinite;
  user-select: none;
}

.write-letter-reaction-badge.is-large {
  width: 64px;
  height: 64px;
  border-radius: 22px;
  font-size: 38px;
}

.write-letter-status {
  margin: 0;
  color: #5f7280;
  line-height: 1.45;
}

.write-letter-status {
  min-height: 20px;
  font-size: 12px;
}

.write-letter-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.write-letter-history-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 1fr);
  gap: 14px;
  align-items: start;
}

.write-letter-history-list {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 420px;
  overflow: auto;
  padding-right: 4px;
}

.write-letter-history-item {
  display: grid;
  gap: 8px;
  text-align: left;
  border: 1px solid rgba(89, 111, 128, .16);
  border-radius: 18px;
  background: rgba(255, 255, 255, .9);
  padding: 14px;
  color: #20313f;
  cursor: pointer;
  box-shadow: 0 10px 20px rgba(32, 49, 63, .04);
}

.write-letter-history-item.is-selected {
  border-color: rgba(37, 118, 156, .5);
  box-shadow: 0 0 0 3px rgba(37, 118, 156, .08);
}

.write-letter-history-item strong {
  display: block;
  font-size: 16px;
}

.write-letter-history-item small,
.write-letter-history-item time {
  color: #6a7c88;
}

.write-letter-history-item p,
.write-letter-detail-body {
  margin: 0;
  color: #43545f;
  line-height: 1.55;
}

.write-letter-detail-meta {
  margin: 0;
  color: #5c7380;
  font-size: 12px;
  font-weight: 700;
  line-height: 1.45;
}

.write-letter-history-empty {
  border: 1px dashed rgba(89, 111, 128, .28);
  border-radius: 18px;
  padding: 18px;
  color: #6a7c88;
  background: rgba(255, 255, 255, .55);
}

.write-letter-history-detail {
  min-height: 100%;
}

.write-letter-detail-card {
  background: rgba(255, 255, 255, .94);
  border: 1px solid rgba(89, 111, 128, .16);
  border-radius: 22px;
  padding: 18px;
  box-shadow: 0 16px 32px rgba(32, 49, 63, .06);
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.write-letter-detail-kicker {
  margin: 0;
  color: #4e6d7a;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: .08em;
  font-size: 11px;
}

.write-letter-detail-card h4 {
  margin: 0;
  font: 800 22px/1.15 Arial, Helvetica, sans-serif;
  color: #20313f;
}

.write-letter-detail-card time {
  color: #71838f;
  font-size: 12px;
}

.write-letter-complete-note {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  margin-top: 4px;
  padding: 14px 16px;
  border-radius: 18px;
  background: #eff8ef;
  color: #355741;
  border: 1px solid rgba(64, 127, 88, .18);
}

.write-letter-completed {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.write-letter-completed-hero {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 16px;
  border-radius: 20px;
  background: rgba(255, 255, 255, .88);
  border: 1px solid rgba(89, 111, 128, .14);
  box-shadow: 0 12px 24px rgba(32, 49, 63, .05);
}

.write-letter-completed-hero p {
  margin: 4px 0 0;
  color: #60707a;
}

.write-letter-completed-flag {
  margin-top: 6px !important;
  color: #4f6874 !important;
  font-size: 12px;
  font-weight: 700;
}

@keyframes write-letter-breathe {
  0%, 100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-2px) scale(1.06); }
}

@media (max-width: 860px) {
  .tool-overlay-write_a_letter .tool-panel {
    height: min(96dvh, 100%);
  }

  .write-letter-history-layout {
    grid-template-columns: 1fr;
  }

  .write-letter-recipient-row {
    grid-template-columns: minmax(0, 1fr) 50px;
  }

  .write-letter-visibility {
    font-size: 13px;
  }

  .write-letter-complete-note {
    flex-direction: column;
    align-items: stretch;
  }
}