/* Shared email letter — EMAIL_LETTER_COMMS_HTML.standing
   Same as Comms raw-msg-* (headers + white iframe). */
.sig-email-letter {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.sig-email-headers {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 8px 10px;
  border-radius: 8px;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid rgba(255, 255, 255, 0.05);
}
.sig-email-hdr-row {
  display: grid;
  grid-template-columns: 56px minmax(0, 1fr);
  gap: 8px;
  font-size: 11px;
  line-height: 1.35;
}
.sig-email-hdr-label {
  font-weight: 750;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: #64748b;
  font-size: 9px;
  padding-top: 2px;
}
.sig-email-hdr-value {
  color: #e2e8f0;
  font-weight: 600;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.sig-email-body-wrap {
  flex: 1 1 auto;
  min-height: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.sig-email-body-label {
  flex-shrink: 0;
  font-size: 9px;
  font-weight: 750;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #64748b;
}
.sig-email-iframe-host {
  position: relative;
  flex: 1 1 auto;
  min-height: 0;
  width: 100%;
  max-width: 100%;
  height: 100%;
  overflow-x: hidden !important;
  overflow-y: hidden !important;
  isolation: isolate;
  contain: paint;
  clip-path: inset(0 round 8px);
  transform: translateZ(0);
  border-radius: 8px;
}
.sig-email-iframe {
  position: absolute;
  inset: 0;
  width: 100% !important;
  height: 100% !important;
  min-height: 0;
  max-width: 100% !important;
  max-height: 100% !important;
  box-sizing: border-box !important;
  border: 0 !important;
  outline: none !important;
  box-shadow: none !important;
  border-radius: 8px;
  background: #fff;
  overflow: hidden !important;
}
.sig-email-empty {
  margin: 0;
  font-size: 12px;
  padding: 10px 12px;
}