:root {
  --ink: #061522;
  --blue: #0868d8;
  --deep-blue: #043b86;
  --pale-blue: #eaf6ff;
  --line: rgba(4, 59, 134, 0.42);
  --tool-font: "Courier New", Courier, monospace;
  --doc-font: Arial, Helvetica, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  color-scheme: light;
}

body {
  position: relative;
  isolation: isolate;
  min-height: 100vh;
  margin: 0;
  color: var(--ink);
  font-family: var(--tool-font);
  background:
    linear-gradient(135deg, #ffffff 0%, #f6fbff 38%, #e2f4ff 100%);
}

body::before {
  position: fixed;
  inset: -12vh -18vw;
  z-index: -1;
  content: "";
  pointer-events: none;
  background:
    radial-gradient(95% 64% at 50% 118%, transparent 63%, rgba(8, 104, 216, 0.16) 64%, transparent 65%) 0 0 / 420px 132px repeat-x,
    radial-gradient(95% 64% at 50% -18%, transparent 63%, rgba(8, 104, 216, 0.1) 64%, transparent 65%) 210px 66px / 420px 132px repeat-x;
  opacity: 0.95;
  transform: rotate(-7deg);
  animation: wave-drift 22s ease-in-out infinite alternate;
}

body::after {
  position: fixed;
  inset: -16vh -20vw;
  z-index: -1;
  content: "";
  pointer-events: none;
  background:
    radial-gradient(92% 70% at 50% 112%, transparent 61%, rgba(92, 190, 255, 0.18) 62%, transparent 64%) 70px 32px / 520px 164px repeat-x,
    linear-gradient(115deg, transparent 0 34%, rgba(255, 255, 255, 0.52) 35% 41%, transparent 42% 100%);
  transform: rotate(5deg);
  animation: wave-drift-soft 28s ease-in-out infinite alternate;
}

button,
input,
textarea,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: 0.42;
}

[hidden] {
  display: none !important;
}

.app-shell {
  width: min(1180px, calc(100% - 28px));
  margin: 0 auto;
  padding: 24px 0 48px;
}

.hero {
  position: relative;
  display: grid;
  gap: 18px;
  justify-items: center;
  padding: 10px 0 24px;
  text-align: center;
}

.language-switch {
  position: absolute;
  top: 0;
  right: 0;
  display: flex;
  gap: 4px;
  padding: 4px;
  border: 1px solid rgba(8, 104, 216, 0.28);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.78);
}

.language-option {
  min-width: 42px;
  min-height: 32px;
  border: 0;
  border-radius: 999px;
  color: var(--ink);
  font-weight: 700;
  background: transparent;
}

.language-option.active {
  color: #ffffff;
  background: var(--blue);
}

.brand-lockup {
  display: grid;
  gap: 4px;
  justify-items: center;
}

h1 {
  margin: 0;
  font-size: clamp(2.2rem, 5vw, 4.6rem);
  line-height: 0.96;
  letter-spacing: 0;
  color: var(--deep-blue);
  text-shadow: 0 12px 34px rgba(8, 104, 216, 0.2);
}

.brand-wave {
  width: min(220px, 45vw);
  height: 12px;
  border-bottom: 3px solid var(--blue);
  border-radius: 50%;
  transform: translateY(-2px);
}

.claim {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin: 0;
  font-weight: 700;
  font-size: clamp(1.55rem, 5.5vw, 2.1rem);
  line-height: 1.1;
}

.claim span {
  color: var(--blue);
  font-size: 1.25em;
  line-height: 0.8;
}

.intro {
  max-width: 720px;
  margin: 0;
  font-size: 1rem;
  line-height: 1.55;
}

.workspace {
  display: grid;
  grid-template-columns: minmax(320px, 420px) minmax(0, 1fr);
  gap: 20px;
  align-items: start;
}

.input-panel,
.output-panel {
  border: 1.5px solid var(--deep-blue);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.88);
  box-shadow: 0 18px 38px rgba(4, 59, 134, 0.16);
}

.input-panel {
  display: grid;
  gap: 14px;
  padding: 16px;
}

.output-panel {
  min-width: 0;
  padding: 16px;
}

.field {
  display: grid;
  gap: 8px;
}

label,
.asset-box > label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

textarea,
input,
select {
  width: 100%;
  border: 1px solid rgba(8, 104, 216, 0.58);
  border-radius: 16px;
  color: var(--ink);
  background: #ffffff;
  outline: none;
}

textarea,
input {
  font-family: var(--doc-font);
  font-size: 12pt;
}

textarea {
  min-height: 104px;
  padding: 12px;
  resize: vertical;
}

input,
select {
  min-height: 44px;
  padding: 0 12px;
}

textarea:focus,
input:focus,
select:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(8, 104, 216, 0.16);
}

.two-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.asset-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}

.asset-box {
  display: grid;
  gap: 8px;
  min-width: 0;
  padding: 12px;
  border: 1px solid rgba(8, 104, 216, 0.32);
  border-radius: 18px;
  background: rgba(234, 246, 255, 0.62);
}

.asset-box input {
  width: 100%;
  max-width: 100%;
  min-height: 0;
  padding: 0;
  border: 0;
  border-radius: 0;
  font-family: var(--doc-font);
  font-size: 0.86rem;
  background: transparent;
}

.asset-box img {
  max-width: 100%;
  max-height: 74px;
  object-fit: contain;
  justify-self: start;
}

.asset-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
}

.asset-actions .ghost-button {
  min-width: 0;
  white-space: normal;
}

.primary-button,
.print-button {
  min-height: 48px;
  border: 0;
  border-radius: 999px;
  color: #ffffff;
  font-weight: 700;
  background: var(--deep-blue);
}

.primary-button {
  font-size: 1.05rem;
}

.ghost-button,
.icon-button,
.tab {
  min-height: 36px;
  border: 1px solid rgba(8, 104, 216, 0.52);
  border-radius: 999px;
  color: var(--ink);
  font-weight: 700;
  background: #ffffff;
}

.ghost-button {
  padding: 0 12px;
  font-size: 0.82rem;
}

.panel-head,
.tool-row,
.label-tools {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
}

.panel-head h2 {
  margin: 0;
  font-size: 1.12rem;
}

.quick-actions {
  display: flex;
  gap: 8px;
}

.icon-button,
.tab {
  padding: 0 14px;
}

.usage-card,
.limit-notice {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: space-between;
  margin: 14px 0;
  padding: 12px;
  border: 1px solid rgba(8, 104, 216, 0.28);
  border-radius: 18px;
  color: var(--ink);
  background: rgba(234, 246, 255, 0.72);
}

.usage-card div,
.limit-notice {
  font-family: var(--doc-font);
}

.usage-card div {
  display: grid;
  gap: 3px;
}

.usage-card span,
.limit-notice span {
  color: rgba(6, 21, 34, 0.72);
  font-size: 0.92rem;
  line-height: 1.35;
}

.limit-notice {
  border-color: rgba(4, 59, 134, 0.7);
  background: rgba(255, 255, 255, 0.94);
}

.limit-notice strong,
.limit-notice span {
  flex: 1 1 100%;
}

.tabs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin: 14px 0;
  padding: 4px;
  border: 1px solid rgba(8, 104, 216, 0.22);
  border-radius: 999px;
  background: rgba(234, 246, 255, 0.68);
}

.tab {
  border-color: transparent;
}

.tab.active {
  color: #ffffff;
  background: var(--blue);
}

.preview-empty {
  display: grid;
  gap: 8px;
  min-height: 300px;
  place-content: center;
  padding: 24px;
  border: 1px dashed var(--line);
  border-radius: 22px;
  color: rgba(6, 21, 34, 0.72);
  text-align: center;
  font-family: var(--doc-font);
}

.preview-stack {
  display: grid;
  gap: 14px;
}

.paper-preview,
.envelope-preview,
.label-preview {
  overflow: hidden;
  border: 1px solid rgba(6, 21, 34, 0.16);
  color: #111111;
  background: #ffffff;
  font-family: var(--doc-font);
  box-shadow: 0 14px 28px rgba(6, 21, 34, 0.12);
}

.letter-page {
  position: relative;
  width: min(100%, 640px);
  aspect-ratio: 210 / 297;
  margin: 0 auto;
  font-size: clamp(8px, 1.45vw, 12px);
}

.page-logo {
  position: absolute;
  top: 4.38%;
  right: 9.52%;
  max-width: 20%;
  max-height: 7.07%;
  object-fit: contain;
}

.fold-mark,
.hole-mark {
  position: absolute;
  left: 1.43%;
  width: 3.33%;
  border-top: 1px solid #111111;
}

.fold-one {
  top: 35.35%;
}

.fold-two {
  top: 70.71%;
}

.hole-mark {
  top: 50%;
  width: 4.29%;
}

.sender-large {
  position: absolute;
  top: 5.72%;
  left: 11.9%;
  max-width: 38.1%;
  font-size: 11pt;
  line-height: 1.25;
  white-space: pre-line;
}

.sender-line {
  position: absolute;
  top: 16.84%;
  left: 11.9%;
  width: 38.1%;
  font-size: 7pt;
  line-height: 1.1;
  text-decoration: underline;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.recipient-block {
  position: absolute;
  top: 21.11%;
  left: 11.9%;
  width: 38.1%;
  min-height: 9.19%;
  font-size: 10pt;
  line-height: 1.18;
  white-space: pre-line;
}

.date-line {
  position: absolute;
  top: 32.32%;
  right: 9.52%;
  width: 33.33%;
  text-align: right;
  font-size: 11pt;
}

.letter-body {
  position: absolute;
  top: 39.06%;
  left: 11.9%;
  right: 9.52%;
  font-size: 12pt;
  line-height: 1.35;
}

.subject-line {
  margin: 0 0 3.4em;
  font-weight: 700;
}

.salutation {
  margin: 0 0 1em;
}

.inline-action {
  display: inline-block;
  min-height: 0;
  margin-bottom: 1em;
  padding: 0;
  border: 0;
  border-radius: 4px;
  color: inherit;
  font-family: var(--doc-font);
  font-size: inherit;
  line-height: inherit;
  text-align: left;
  background: transparent;
}

.inline-action.is-suggestion {
  padding: 0.08em 0.24em;
  color: #043b86;
  background: rgba(8, 104, 216, 0.14);
  box-shadow: inset 0 -1px 0 rgba(8, 104, 216, 0.36);
}

.inline-editor {
  margin-bottom: 1em;
}

.inline-input {
  width: min(100%, 86mm);
  min-height: 0;
  padding: 0.12em 0.22em;
  border: 1px solid rgba(8, 104, 216, 0.48);
  border-radius: 4px;
  color: #111111;
  font-family: var(--doc-font);
  font-size: inherit;
  line-height: inherit;
  background: rgba(255, 255, 255, 0.92);
}

.letter-body p {
  margin: 0 0 1em;
}

.closing {
  margin-top: 0.4em;
}

.signature-image {
  display: block;
  max-width: 24%;
  max-height: 22mm;
  margin-top: 2.7%;
  object-fit: contain;
}

.signature-name {
  margin-top: 2.7%;
}

.envelope-preview {
  position: relative;
  width: min(100%, 640px);
  aspect-ratio: 220 / 110;
  margin: 0 auto;
  font-size: 12px;
}

.envelope-sender {
  position: absolute;
  top: 18mm;
  left: 20mm;
  max-width: 75mm;
  font-size: 9pt;
  line-height: 1.2;
  white-space: pre-line;
}

.envelope-recipient {
  position: absolute;
  top: 43mm;
  left: 105mm;
  width: 85mm;
  font-size: 12pt;
  line-height: 1.25;
  white-space: pre-line;
}

.label-tools {
  justify-content: flex-start;
}

.label-tools label {
  display: grid;
  gap: 5px;
  min-width: 110px;
}

.label-tools .print-button {
  min-width: 160px;
  padding: 0 18px;
}

.label-preview {
  display: grid;
  gap: 2mm;
  width: min(100%, 640px);
  aspect-ratio: 210 / 297;
  margin: 0 auto;
  padding: 10mm;
}

.label-preview.threeByEight {
  grid-template-columns: repeat(3, 1fr);
  grid-template-rows: repeat(8, 1fr);
}

.label-preview.twoBySeven {
  grid-template-columns: repeat(2, 1fr);
  grid-template-rows: repeat(7, 1fr);
}

.label-cell {
  display: grid;
  align-content: center;
  min-width: 0;
  padding: 2mm 4mm;
  border: 1px dashed rgba(6, 21, 34, 0.2);
  font-family: var(--doc-font);
  font-size: 9pt;
  line-height: 1.2;
  white-space: pre-line;
}

.label-cell.selected {
  border-color: var(--blue);
  background: rgba(8, 104, 216, 0.08);
}

.trust-panel {
  display: grid;
  gap: 18px;
  margin-top: 24px;
  padding: 18px;
  border: 1.5px solid rgba(4, 59, 134, 0.72);
  border-radius: 28px;
  background: rgba(255, 255, 255, 0.82);
  box-shadow: 0 18px 38px rgba(4, 59, 134, 0.12);
}

.trust-copy {
  max-width: 760px;
}

.eyebrow {
  margin: 0 0 8px;
  color: var(--blue);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.trust-copy h2 {
  margin: 0 0 10px;
  font-size: clamp(1.45rem, 3vw, 2rem);
  line-height: 1.12;
}

.trust-copy p,
.trust-grid p,
.fine-print {
  font-family: var(--doc-font);
}

.trust-copy p {
  margin: 0;
  max-width: 700px;
  line-height: 1.55;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 12px;
}

.trust-grid article {
  min-width: 0;
  padding: 14px;
  border: 1px solid rgba(8, 104, 216, 0.24);
  border-radius: 18px;
  background: rgba(234, 246, 255, 0.54);
}

.trust-grid h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.trust-grid p,
.fine-print {
  margin: 0;
  color: rgba(6, 21, 34, 0.72);
  font-size: 0.94rem;
  line-height: 1.45;
}

.fine-print {
  padding-top: 2px;
}

.signature-dialog {
  width: min(980px, calc(100% - 24px));
  border: 1.5px solid var(--deep-blue);
  border-radius: 22px;
  color: var(--ink);
  background: #ffffff;
}

.signature-dialog::backdrop {
  background: rgba(6, 21, 34, 0.42);
}

.signature-toolbar {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  align-items: center;
  margin-bottom: 10px;
}

.signature-toolbar span {
  flex: 1 1 260px;
  font-family: var(--doc-font);
  font-size: 0.92rem;
}

.signature-toolbar button {
  min-height: 34px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #ffffff;
}

#signature-canvas {
  width: 100%;
  height: min(42vh, 320px);
  border: 1px solid var(--line);
  border-radius: 18px;
  background: #ffffff;
  touch-action: none;
}

.print-stage {
  display: none;
}

@keyframes wave-drift {
  from {
    transform: translate3d(-34px, -12px, 0) rotate(-7deg);
  }
  to {
    transform: translate3d(34px, 18px, 0) rotate(-7deg);
  }
}

@keyframes wave-drift-soft {
  from {
    transform: translate3d(28px, 8px, 0) rotate(5deg);
  }
  to {
    transform: translate3d(-28px, -16px, 0) rotate(5deg);
  }
}

@media (max-width: 840px) {
  .workspace {
    grid-template-columns: 1fr;
  }

  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .app-shell {
    width: min(100% - 18px, 680px);
    padding-top: 16px;
  }

  .hero {
    gap: 14px;
  }

  .intro {
    text-align: center;
  }
}

@media (max-width: 560px) {
  .two-columns,
  .trust-grid {
    grid-template-columns: 1fr;
  }

  .asset-actions {
    grid-template-columns: 1fr;
  }

  .claim {
    width: min(100%, 330px);
  }

  .input-panel,
  .output-panel {
    border-radius: 22px;
  }

  .language-switch {
    position: static;
    justify-self: center;
  }
}

@page {
  size: A4;
  margin: 0;
}

@page envelope {
  size: 220mm 110mm;
  margin: 0;
}

@page labels {
  size: A4;
  margin: 0;
}

@media print {
  body {
    background: #ffffff;
  }

  @media print {
  html,
  body {
    width: 210mm;
    height: 297mm;
    margin: 0;
    padding: 0;
  }

  .app-shell,
  .signature-dialog {
    display: none !important;
  }

  .print-stage {
    display: block;
    position: static;
    width: 210mm;
    height: 297mm;
    margin: 0;
    padding: 0;
  }

  .print-stage > div {
    display: none;
  }

  body.print-letter #print-letter-stage,
  body.print-envelope #print-envelope-stage,
  body.print-labels #print-label-stage {
    display: block;
  }

  .letter-page {
    width: 210mm;
    height: 297mm;
    margin: 0;
    border: 0;
    box-shadow: none;
  }
}

  .print-stage {
    display: block;
  }

  .print-stage > div {
    display: none;
  }

  body.print-letter #print-letter-stage,
  body.print-envelope #print-envelope-stage,
  body.print-labels #print-label-stage {
    display: block;
  }

  .print-stage {
    position: absolute;
    inset: 0;
  }

  .paper-preview,
  .envelope-preview,
  .label-preview {
    box-shadow: none;
    border: 0;
  }

  .inline-action {
    padding: 0;
    color: #111111;
    background: transparent;
    box-shadow: none;
  }

  .letter-page {
    width: 210mm;
    height: 297mm;
    aspect-ratio: auto;
  }

  body.print-envelope {
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  body.print-envelope .envelope-preview {
    page: envelope;
    width: 220mm;
    height: 110mm;
    aspect-ratio: auto;
  }

  body.print-labels .label-preview {
    page: labels;
    width: 210mm;
    height: 297mm;
    aspect-ratio: auto;
    padding: 10mm;
  }
}