:root {
  --studio-bg: #050b12;
  --studio-panel: #0a1826;
  --studio-panel-soft: #0d2133;
  --studio-line: rgba(183, 215, 235, 0.2);
  --studio-line-strong: rgba(183, 215, 235, 0.4);
  --studio-text: #eef8ff;
  --studio-muted: #9eb2c4;
  --studio-blue: #2bc8f0;
  --studio-blue-dark: #0a628e;
  --studio-red: #be3c35;
  --paper-ink: #19232c;
  --paper-muted: #566570;
  --paper-blue: #0b6394;
  --paper-line: #c8d2d9;
  --radius: 18px;
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--studio-bg);
}

body {
  min-width: 320px;
  min-height: 100vh;
  margin: 0;
  color: var(--studio-text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at 88% 0, rgba(19, 121, 174, 0.2), transparent 34rem),
    linear-gradient(145deg, #03080d, #07131e 55%, #050b12);
}

button,
input,
textarea {
  font: inherit;
}

button,
a {
  -webkit-tap-highlight-color: transparent;
}

button {
  cursor: pointer;
}

.studio-header {
  position: sticky;
  top: 0;
  z-index: 20;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 10px clamp(16px, 4vw, 40px);
  border-bottom: 1px solid var(--studio-line);
  background: rgba(3, 9, 15, 0.92);
  backdrop-filter: blur(18px);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-height: 42px;
  padding: 0 12px;
  color: #c8e9f8;
  text-decoration: none;
  font-size: 0.84rem;
  font-weight: 750;
  border: 1px solid var(--studio-line);
  border-radius: 11px;
}

.back-link:hover,
.back-link:focus-visible {
  border-color: var(--studio-blue);
  outline: none;
}

.studio-brand {
  display: flex;
  align-items: center;
  gap: 11px;
  min-width: 0;
}

.studio-brand img {
  width: 48px;
  height: 48px;
  object-fit: cover;
  border-radius: 50%;
  border: 1px solid rgba(255, 255, 255, 0.16);
}

.studio-brand strong,
.studio-brand span {
  display: block;
}

.studio-brand strong {
  font-size: 0.9rem;
}

.studio-brand span {
  margin-top: 2px;
  color: var(--studio-muted);
  font-size: 0.7rem;
}

.studio-layout {
  width: min(1480px, calc(100% - 32px));
  margin: 24px auto 72px;
  display: grid;
  grid-template-columns: minmax(320px, 500px) minmax(0, 1fr);
  gap: 24px;
  align-items: start;
}

.editor-panel,
.preview-panel {
  border: 1px solid var(--studio-line);
  border-radius: var(--radius);
  background: linear-gradient(155deg, rgba(13, 34, 52, 0.97), rgba(6, 18, 29, 0.97));
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.34);
}

.editor-panel {
  position: sticky;
  top: 96px;
  padding: clamp(20px, 4vw, 34px);
}

.panel-heading {
  margin-bottom: 25px;
}

.eyebrow {
  margin: 0 0 8px;
  color: #8ee9ff;
  font-size: 0.7rem;
  font-weight: 850;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.panel-heading h1,
.preview-heading h2 {
  margin: 0;
  line-height: 1.12;
}

.panel-heading h1 {
  font-size: clamp(1.7rem, 4vw, 2.25rem);
}

.panel-heading > p:last-child {
  margin: 12px 0 0;
  color: var(--studio-muted);
  line-height: 1.55;
}

#letterhead-form {
  display: grid;
  gap: 20px;
}

.field,
.conditional-field {
  display: grid;
  gap: 8px;
}

.field label,
.conditional-field > label,
.choice-group legend {
  color: #dcebf4;
  font-size: 0.82rem;
  font-weight: 750;
}

.field input,
.field textarea,
.conditional-field textarea {
  width: 100%;
  color: var(--studio-text);
  background: rgba(1, 9, 16, 0.7);
  border: 1px solid var(--studio-line-strong);
  border-radius: 12px;
  padding: 12px 13px;
  outline: none;
}

.field input {
  min-height: 48px;
}

.field textarea,
.conditional-field textarea {
  min-height: 94px;
  resize: vertical;
  line-height: 1.5;
}

#document-body {
  min-height: 290px;
}

.field input:focus,
.field textarea:focus,
.conditional-field textarea:focus {
  border-color: var(--studio-blue);
  box-shadow: 0 0 0 3px rgba(43, 200, 240, 0.12);
}

.field input::placeholder,
.field textarea::placeholder,
.conditional-field textarea::placeholder {
  color: #667d8f;
}

.field-hint {
  color: var(--studio-muted);
  font-size: 0.72rem;
  line-height: 1.4;
}

.choice-group {
  display: grid;
  gap: 11px;
  min-width: 0;
  margin: 0;
  padding: 16px;
  border: 1px solid var(--studio-line);
  border-radius: 14px;
}

.choice-group legend {
  padding: 0 5px;
}

.toggle-row {
  display: flex;
  align-items: flex-start;
  gap: 11px;
  padding: 12px;
  border: 1px solid var(--studio-line);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.025);
  cursor: pointer;
}

.toggle-row input {
  flex: 0 0 auto;
  width: 20px;
  height: 20px;
  margin: 2px 0 0;
  accent-color: var(--studio-blue);
}

.toggle-row strong,
.toggle-row small {
  display: block;
}

.toggle-row strong {
  color: #e6f3fa;
  font-size: 0.86rem;
}

.toggle-row small {
  margin-top: 3px;
  color: var(--studio-muted);
  font-size: 0.73rem;
  line-height: 1.4;
}

.conditional-field {
  padding: 8px 4px 11px 32px;
}

.conditional-field[hidden] {
  display: none;
}

.privacy-note {
  margin-top: 20px;
  padding: 13px 14px;
  color: #b6cad7;
  font-size: 0.77rem;
  line-height: 1.5;
  border-left: 3px solid var(--studio-blue);
  background: rgba(43, 200, 240, 0.055);
}

.action-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 20px;
}

.action {
  min-height: 47px;
  padding: 10px 12px;
  color: #e7f4fb;
  font-size: 0.78rem;
  font-weight: 780;
  border: 1px solid var(--studio-line-strong);
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.04);
}

.action:hover,
.action:focus-visible {
  border-color: var(--studio-blue);
  outline: none;
  transform: translateY(-1px);
}

.action.primary {
  color: #00151d;
  background: linear-gradient(135deg, #159fc8, #4de1ff);
  border-color: transparent;
}

.action.danger {
  color: #ffc3c0;
  border-color: rgba(190, 60, 53, 0.46);
}

.email-note {
  margin: 11px 0 0;
  color: var(--studio-muted);
  font-size: 0.7rem;
  line-height: 1.45;
}

.preview-panel {
  min-width: 0;
  padding: 22px;
  overflow: hidden;
}

.preview-heading {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 18px;
}

.preview-heading h2 {
  font-size: 1.2rem;
}

#page-count {
  flex: 0 0 auto;
  color: #b9d8e7;
  font-size: 0.76rem;
}

.letterhead-pages {
  display: grid;
  gap: 24px;
  justify-content: center;
}

.page-frame {
  width: var(--preview-page-width, 8.5in);
  height: var(--preview-page-height, 11in);
}

.letterhead-page {
  position: relative;
  width: 8.5in;
  height: 11in;
  display: grid;
  grid-template-rows: 1.14in minmax(0, 1fr) 0.72in;
  overflow: hidden;
  color: var(--paper-ink);
  background: white;
  box-shadow: 0 18px 60px rgba(0, 0, 0, 0.42);
  font-family: Georgia, "Times New Roman", serif;
  font-size: 10.5pt;
  line-height: 1.48;
  transform: scale(var(--preview-page-scale, 1));
  transform-origin: top left;
}

.letterhead-paper-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.28in;
  min-height: 0;
  padding: 0.12in 0.56in 0.1in;
  color: white;
  background:
    linear-gradient(100deg, rgba(4, 19, 31, 0.98), rgba(2, 5, 8, 0.98)),
    #020508;
  border-bottom: 0.06in solid #126fa0;
}

.letterhead-wordmark {
  width: 3.05in;
  height: 0.84in;
  object-fit: cover;
  object-position: center;
}

.letterhead-header-copy {
  text-align: right;
  font-family: Arial, sans-serif;
}

.letterhead-header-copy strong,
.letterhead-header-copy span {
  display: block;
}

.letterhead-header-copy strong {
  color: #e5f6ff;
  font-size: 8.5pt;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.letterhead-header-copy span {
  margin-top: 4px;
  color: #8fd8f4;
  font-size: 7pt;
  letter-spacing: 0.08em;
}

.letterhead-paper-body {
  min-height: 0;
  overflow: hidden;
  padding: 0.47in 0.68in 0.28in;
}

.letterhead-title {
  margin: 0 0 0.22in;
  padding-bottom: 0.13in;
  color: #123f58;
  font-family: Arial, sans-serif;
  font-size: 20pt;
  line-height: 1.16;
  letter-spacing: -0.015em;
  border-bottom: 1px solid #aac5d4;
  overflow-wrap: anywhere;
}

.letterhead-paragraph {
  margin: 0 0 0.13in;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  word-break: normal;
}

.letterhead-empty {
  color: #5f6d76;
  font-style: italic;
}

.letterhead-section-heading {
  margin: 0.14in 0 0.1in;
  color: #174d68;
  font-family: Arial, sans-serif;
  font-size: 11.5pt;
  letter-spacing: 0.035em;
  text-transform: uppercase;
  border-bottom: 1px solid #cad7de;
  padding-bottom: 0.05in;
}

.letterhead-keep-together {
  break-inside: avoid;
}

.letterhead-signature {
  min-height: 0.78in;
  margin-bottom: 0.12in;
  break-inside: avoid;
}

.letterhead-signature-line {
  height: 0.43in;
  border-bottom: 1px solid #39464e;
}

.letterhead-signature-label {
  padding-top: 0.04in;
  color: var(--paper-muted);
  font-family: Arial, sans-serif;
  font-size: 8pt;
  overflow-wrap: anywhere;
}

.letterhead-disclaimer {
  padding: 0.1in 0.12in;
  color: #4e5c64;
  font-family: Arial, sans-serif;
  font-size: 8.2pt;
  line-height: 1.38;
  background: #f3f6f8;
  border-left: 3px solid #597d91;
}

.letterhead-paper-footer {
  position: relative;
  min-height: 0;
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: center;
  gap: 0.2in;
  padding: 0.08in 0.56in;
  overflow: hidden;
  color: #d7e8f1;
  background: #03070a;
  border-top: 0.04in solid #94403d;
  font-family: Arial, sans-serif;
}

.letterhead-footer-mark {
  position: absolute;
  left: 0.42in;
  top: -0.64in;
  width: 2.2in;
  height: 2.2in;
  object-fit: contain;
  opacity: 0.19;
  filter: brightness(4.5) contrast(1.6);
  pointer-events: none;
}

.letterhead-footer-copy {
  position: relative;
  z-index: 1;
  min-width: 0;
}

.letterhead-footer-copy strong,
.letterhead-footer-copy span {
  display: block;
}

.letterhead-footer-copy strong {
  font-size: 7.5pt;
  letter-spacing: 0.15em;
}

.letterhead-footer-copy span {
  margin-top: 2px;
  color: #8db8ca;
  font-size: 6.8pt;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.letterhead-page-number {
  position: relative;
  z-index: 1;
  color: #c4d6df;
  font-size: 7pt;
  white-space: nowrap;
}

.letterhead-measurement {
  position: fixed;
  top: 0;
  left: -20000px;
  width: 8.5in;
  visibility: hidden;
  pointer-events: none;
}

.letterhead-measurement .page-frame {
  width: 8.5in;
  height: 11in;
}

.letterhead-measurement .letterhead-page {
  transform: none;
}

.studio-toast {
  position: fixed;
  left: 50%;
  bottom: 22px;
  z-index: 80;
  max-width: min(520px, calc(100% - 32px));
  padding: 11px 16px;
  color: #06131b;
  background: #e8f8ff;
  border-radius: 99px;
  box-shadow: 0 16px 45px rgba(0, 0, 0, 0.38);
  font-size: 0.8rem;
  font-weight: 750;
  text-align: center;
  opacity: 0;
  pointer-events: none;
  transform: translate(-50%, 16px);
  transition: 170ms ease;
}

.studio-toast.show {
  opacity: 1;
  transform: translate(-50%, 0);
}

@media (max-width: 1120px) {
  .studio-layout {
    grid-template-columns: 1fr;
  }

  .editor-panel {
    position: static;
  }
}

@media (max-width: 860px) {
  .studio-layout {
    width: min(100% - 18px, 760px);
    margin-top: 12px;
    gap: 14px;
  }

  .preview-panel {
    padding: 16px 8px 22px;
  }

  .letterhead-pages {
    padding: 0 2px 12px;
  }
}

@media (max-width: 580px) {
  .studio-header {
    align-items: flex-start;
    padding: 9px 10px;
  }

  .studio-brand span {
    display: none;
  }

  .studio-brand img {
    width: 42px;
    height: 42px;
  }

  .back-link {
    padding: 0 10px;
    font-size: 0.75rem;
  }

  .editor-panel {
    padding: 20px 16px;
  }

  .action-grid {
    grid-template-columns: 1fr;
  }

  .preview-heading {
    align-items: flex-start;
  }
}

@media print {
  @page {
    size: Letter;
    margin: 0;
  }

  html,
  body {
    width: 8.5in;
    min-width: 0;
    margin: 0 !important;
    padding: 0 !important;
    background: white !important;
  }

  body.letterhead-printing .studio-header,
  body.letterhead-printing .editor-panel,
  body.letterhead-printing .preview-heading,
  body.letterhead-printing .letterhead-measurement,
  body.letterhead-printing .studio-toast {
    display: none !important;
  }

  body.letterhead-printing .studio-layout,
  body.letterhead-printing .preview-panel,
  body.letterhead-printing .letterhead-pages {
    display: block !important;
    width: 8.5in !important;
    max-width: none !important;
    margin: 0 !important;
    padding: 0 !important;
    border: 0 !important;
    border-radius: 0 !important;
    background: white !important;
    box-shadow: none !important;
    overflow: visible !important;
  }

  body.letterhead-printing .page-frame,
  body.letterhead-printing .letterhead-page {
    width: 8.5in !important;
    height: 11in !important;
    margin: 0 !important;
    box-shadow: none !important;
    transform: none !important;
  }

  body.letterhead-printing .page-frame {
    break-after: page;
    page-break-after: always;
  }

  body.letterhead-printing .page-frame:last-child {
    break-after: auto;
    page-break-after: auto;
  }

  .letterhead-paper-header,
  .letterhead-paper-footer {
    color: #173a50 !important;
    background: #fff !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .letterhead-paper-header {
    border-bottom-color: #126fa0 !important;
  }

  .letterhead-header-copy strong,
  .letterhead-footer-copy strong,
  .letterhead-page-number {
    color: #173a50 !important;
  }

  .letterhead-header-copy span,
  .letterhead-footer-copy span {
    color: #0b6394 !important;
  }

  .letterhead-paper-footer {
    border-top-color: #94403d !important;
  }

  .letterhead-footer-mark {
    opacity: 0.08 !important;
  }
}