:root {
  --page: #e4e4e4;
  --page-deep: #cecece;
  --ink: #151515;
  --muted: #575757;
  --line: #a4a4a4;
  --panel: rgba(250, 250, 250, 0.93);
  --panel-strong: #f2f2f2;
  --accent: #202020;
  --accent-dark: #000000;
  --accent-soft: #d2d2d2;
  --olive: #4a4a4a;
  --card-shadow: rgba(0, 0, 0, 0.12);
  --card-width: 91mm;
  --card-height: 55mm;
  --print-safe-top: 2.6mm;
  --print-safe-right: 1.8mm;
  --print-safe-bottom: 1.8mm;
  --print-safe-left: 1.8mm;
  --preview-card-screen-width: clamp(320px, 34vw, 430px);
  --radius-lg: 32px;
  --radius-md: 20px;
  --radius-sm: 14px;
  --space-1: 0.55rem;
  --space-2: 0.9rem;
  --space-3: 1.25rem;
  --space-4: 1.8rem;
  --space-5: 2.5rem;
}

* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  min-height: 100%;
}

body {
  font-family: "Avenir Next", "Hiragino Sans", "Yu Gothic", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at 12% 14%, rgba(255, 255, 255, 0.45), transparent 26%),
    radial-gradient(circle at 90% 4%, rgba(0, 0, 0, 0.05), transparent 24%),
    linear-gradient(155deg, #f3f3f3 0%, var(--page) 58%, #dddddd 100%);
  line-height: 1.5;
}

body::before,
body::after {
  content: "";
  position: fixed;
  pointer-events: none;
  border-radius: 999px;
  z-index: 0;
}

body::before {
  inset: auto auto -8rem -6rem;
  width: 18rem;
  height: 18rem;
  background: rgba(0, 0, 0, 0.06);
}

body::after {
  inset: 4rem -5rem auto auto;
  width: 15rem;
  height: 15rem;
  background: rgba(255, 255, 255, 0.44);
}

.page-shell {
  position: relative;
  z-index: 1;
  max-width: 1440px;
  margin: 0 auto;
  padding: 2rem 1rem 3rem;
}

.hero {
  display: grid;
  grid-template-columns: 1.25fr 0.9fr;
  gap: var(--space-4);
  align-items: end;
  margin-bottom: var(--space-4);
}

.eyebrow,
.panel-kicker,
.card-label {
  margin: 0;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-size: 0.72rem;
  font-weight: 700;
}

.eyebrow,
.panel-kicker {
  color: var(--olive);
}

.hero h1,
.control-panel h2,
.preview-topline h2,
.card-header h3 {
  margin: 0;
  font-family: "Iowan Old Style", "Palatino Linotype", "Book Antiqua", serif;
  font-weight: 700;
}

.hero h1 {
  font-size: clamp(2.7rem, 6vw, 5rem);
  line-height: 0.95;
  letter-spacing: -0.04em;
}

.hero-copy {
  margin: 0;
  padding: 1.1rem 1.25rem;
  border: 1px solid rgba(98, 95, 86, 0.24);
  border-radius: 18px;
  background: rgba(255, 255, 255, 0.76);
  color: var(--muted);
}

.layout {
  display: grid;
  grid-template-columns: minmax(320px, 440px) minmax(0, 1fr);
  gap: var(--space-4);
  align-items: start;
}

.control-panel,
.preview-panel {
  border: 1px solid rgba(101, 90, 70, 0.18);
  border-radius: var(--radius-lg);
  background: var(--panel);
  box-shadow: 0 28px 60px -38px rgba(60, 40, 16, 0.5);
  backdrop-filter: blur(10px);
}

.control-panel {
  padding: var(--space-4);
}

.preview-panel {
  padding: var(--space-4);
}

.preview-panel-floating {
  position: sticky;
  top: 1rem;
}

.panel-head,
.preview-topline {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  align-items: start;
}

.control-panel h2,
.preview-topline h2 {
  font-size: clamp(1.7rem, 3vw, 2.4rem);
  line-height: 1.05;
}

.generator-form {
  margin-top: var(--space-3);
  display: grid;
  gap: var(--space-3);
}

.field {
  display: grid;
  gap: 0.45rem;
  min-width: 0;
}

.field-label {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--muted);
}

.field input[type="text"],
.field input[type="number"],
.field textarea {
  width: 100%;
  min-width: 0;
  border: 1px solid rgba(98, 95, 86, 0.28);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1rem;
  background: rgba(255, 252, 246, 0.9);
  color: var(--ink);
  font: inherit;
}

.field textarea {
  resize: vertical;
  min-height: 5.4rem;
}

.field input:focus,
.field textarea:focus {
  outline: 3px solid rgba(0, 0, 0, 0.1);
  border-color: var(--accent);
}

.length-row {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 8rem;
  gap: 0.9rem;
  align-items: end;
}

.length-field input[type="range"] {
  width: 100%;
  accent-color: var(--accent);
}

.length-number-field input[type="number"] {
  text-align: center;
  font-weight: 700;
}

.option-group {
  margin: 0;
  padding: 1rem 1rem 0.9rem;
  border: 1px solid rgba(98, 95, 86, 0.2);
  border-radius: var(--radius-md);
  display: grid;
  gap: 0.8rem;
  background: rgba(255, 255, 255, 0.72);
}

.option-group legend {
  padding: 0 0.45rem;
  font-weight: 800;
  color: var(--ink);
}

.option-group-secondary {
  background: rgba(244, 244, 244, 0.92);
}

.check-row {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-height: 1.75rem;
  font-size: 0.98rem;
}

.check-row input {
  inline-size: 1rem;
  block-size: 1rem;
  accent-color: var(--accent);
}

.action-row {
  display: flex;
  gap: 0.8rem;
  flex-wrap: wrap;
}

.action-row-compact .button {
  flex: 1 1 9rem;
}

.button {
  min-height: 46px;
  border-radius: 999px;
  border: 1px solid transparent;
  padding: 0.82rem 1.3rem;
  font: inherit;
  font-weight: 800;
  cursor: pointer;
  transition: transform 140ms ease, box-shadow 140ms ease, background 140ms ease;
}

.button:hover {
  transform: translateY(-1px);
}

.button:active {
  transform: translateY(0);
}

.button-primary {
  background: linear-gradient(140deg, var(--accent), var(--accent-dark));
  color: #fffefb;
  box-shadow: 0 18px 26px -18px rgba(0, 0, 0, 0.44);
}

.button-secondary {
  background: rgba(255, 251, 244, 0.9);
  color: var(--ink);
  border-color: rgba(98, 95, 86, 0.24);
}

.status-message {
  margin: 0;
  min-height: 1.5rem;
  font-size: 0.95rem;
  color: var(--muted);
}

.status-message[data-state="error"] {
  color: #7a2323;
}

.status-message[data-state="success"] {
  color: #2d4d2d;
}

.status-note {
  margin: -0.65rem 0 0;
  font-size: 0.9rem;
  color: var(--muted);
}

.privacy-note {
  margin-top: var(--space-3);
  padding: 0.9rem 1rem;
  border-radius: 18px;
  background: rgba(0, 0, 0, 0.04);
  color: var(--muted);
}

.spec-list {
  margin: 0;
  display: grid;
  gap: 0.85rem;
}

.spec-list div {
  display: grid;
  gap: 0.15rem;
}

.spec-list dt,
.sheet-header {
  color: var(--muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.spec-list dd {
  margin: 0;
  font-weight: 800;
  color: var(--ink);
}

.sheet-preview {
  margin-top: var(--space-3);
  background:
    linear-gradient(135deg, rgba(0, 0, 0, 0.04), transparent 38%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.94), rgba(244, 244, 244, 0.98));
  border: 1px solid rgba(101, 90, 70, 0.16);
  border-radius: 28px;
  padding: var(--space-3);
}

.card-preview-stage {
  min-height: calc(var(--preview-card-screen-width) * 0.72);
}

.sheet-header {
  display: flex;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 0.9rem;
}

.preview-sheet-grid,
.export-sheet-grid {
  width: min(100%, calc(var(--preview-card-screen-width) + 1.2rem));
  aspect-ratio: 91 / 55;
  margin: 0 auto;
  padding:
    max(0.8rem, var(--print-safe-top))
    max(0.8rem, var(--print-safe-right))
    max(0.8rem, var(--print-safe-bottom))
    max(0.8rem, var(--print-safe-left));
  display: grid;
  place-items: stretch;
  background:
    radial-gradient(circle at top, rgba(255, 255, 255, 0.82), transparent 42%),
    linear-gradient(180deg, rgba(255, 255, 255, 0.98), rgba(246, 246, 246, 0.96));
  border: 1px solid rgba(101, 90, 70, 0.16);
  border-radius: 14px;
  box-shadow: 0 26px 50px -36px var(--card-shadow);
  overflow: hidden;
}

.export-sheet-grid {
  width: var(--card-width);
  height: var(--card-height);
  padding: var(--print-safe-top) var(--print-safe-right) var(--print-safe-bottom)
    var(--print-safe-left);
  aspect-ratio: auto;
  border: 0;
  border-radius: 0;
  box-shadow: none;
  background: #fff;
}

.password-card {
  position: relative;
  inline-size: 100%;
  block-size: 100%;
  min-block-size: 0;
  padding: 4.1mm 4.1mm 3.8mm;
  display: grid;
  grid-template-rows: auto auto minmax(11.2mm, 1fr) auto;
  gap: 1.8mm;
  background: #ffffff;
  border: 0.55mm solid #1a1a1a;
  color: #111111;
  overflow: hidden;
}

.export-render-host {
  position: fixed;
  inset: 0 auto auto -200vw;
  width: calc(var(--card-width) + var(--print-safe-left) + var(--print-safe-right));
  height: calc(var(--card-height) + var(--print-safe-top) + var(--print-safe-bottom));
  opacity: 0;
  pointer-events: none;
  overflow: hidden;
}

.card-header {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 2.2mm;
  padding-bottom: 1.5mm;
  border-bottom: 0.28mm solid rgba(0, 0, 0, 0.42);
}

.card-header-block {
  display: grid;
  gap: 0.45mm;
  min-width: 0;
}

.card-header h3 {
  font-size: 3.35mm;
  line-height: 1.12;
  word-break: break-word;
  min-height: 3.9mm;
}

.card-header h3:empty::after {
  content: "";
  display: block;
  min-height: 3.9mm;
}

.card-label {
  color: #5a5a5a;
  font-size: 0.62rem;
  letter-spacing: 0.1em;
}

.card-header-block-end {
  justify-items: end;
  text-align: right;
}

.card-date {
  font-size: 2.5mm;
  font-weight: 700;
  min-height: 3mm;
}

.card-date:empty::after {
  content: "";
  display: block;
  min-height: 3mm;
}

.card-info-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
}

.card-info-field {
  display: grid;
  gap: 0.45mm;
  padding: 1.1mm 0 1.4mm;
  border-bottom: 0.28mm solid rgba(0, 0, 0, 0.2);
  min-width: 0;
}

.card-meta-value {
  margin: 0;
  font-size: 2.55mm;
  line-height: 1.2;
  font-weight: 700;
  word-break: break-word;
  min-height: 3.2mm;
}

.card-meta-value:empty::after {
  content: "";
  display: block;
  min-height: 3.2mm;
}

.card-password-area {
  min-height: 0;
  display: grid;
  align-content: start;
  padding-top: 0.2mm;
}

.card-password {
  margin: 0.8mm 0 0;
  font-family: "SFMono-Regular", "Cascadia Mono", "IBM Plex Mono", "Menlo", monospace;
  font-size: 3.4mm;
  line-height: 1.22;
  letter-spacing: 0.12mm;
  white-space: normal;
  overflow-wrap: anywhere;
  word-break: break-word;
}

.password-card.density-compact .card-password {
  font-size: 3.05mm;
  letter-spacing: 0.08mm;
  line-height: 1.18;
}

.password-card.density-tight .card-password {
  font-size: 2.72mm;
  letter-spacing: 0.04mm;
  line-height: 1.14;
}

.card-footer {
  display: flex;
  align-items: end;
  padding-top: 1.1mm;
  border-top: 0.28mm solid rgba(0, 0, 0, 0.2);
}

.hint-block {
  inline-size: 100%;
  min-block-size: 8.2mm;
}

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

  .preview-panel-floating {
    position: static;
  }
}

@media (max-width: 780px) {
  .page-shell {
    padding-inline: 0.8rem;
  }

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

  .panel-head,
  .preview-topline,
  .sheet-header {
    grid-template-columns: 1fr;
    display: grid;
  }

  .length-row {
    grid-template-columns: 1fr;
  }

  .preview-panel,
  .control-panel {
    padding: 1.15rem;
    border-radius: 24px;
  }

  .sheet-preview {
    padding: 0.8rem;
    border-radius: 22px;
  }

  .sheet-header {
    gap: 0.35rem;
    margin-bottom: 0.65rem;
  }

  .preview-sheet-grid {
    width: min(100%, 23.2rem);
    padding:
      max(0.42rem, var(--print-safe-top))
      max(0.42rem, var(--print-safe-right))
      max(0.42rem, var(--print-safe-bottom))
      max(0.42rem, var(--print-safe-left));
  }

  .preview-card {
    inline-size: 100%;
    block-size: 100%;
    min-block-size: 0;
    padding: 3.15mm 3.2mm 3mm;
    grid-template-rows: auto auto minmax(8.6mm, 1fr) auto;
    gap: 1.15mm;
  }

  .preview-card .card-header {
    flex-direction: row;
    align-items: start;
    justify-content: space-between;
    gap: 1.6mm;
    padding-bottom: 1mm;
  }

  .preview-card .card-header-block-end {
    justify-items: end;
    text-align: right;
  }

  .preview-card .card-header h3 {
    font-size: 2.85mm;
    min-height: 3.1mm;
  }

  .preview-card .card-header h3:empty::after {
    min-height: 3.1mm;
  }

  .preview-card .card-label {
    font-size: 0.5rem;
    letter-spacing: 0.08em;
  }

  .preview-card .card-date {
    font-size: 2mm;
    min-height: 2.35mm;
  }

  .preview-card .card-date:empty::after {
    min-height: 2.35mm;
  }

  .preview-card .card-info-field {
    gap: 0.32mm;
    padding: 0.7mm 0 0.9mm;
  }

  .preview-card .card-meta-value {
    font-size: 2.1mm;
    min-height: 2.55mm;
  }

  .preview-card .card-meta-value:empty::after {
    min-height: 2.55mm;
  }

  .preview-card .card-password-area {
    padding-top: 0;
  }

  .preview-card .card-password {
    margin-top: 0.45mm;
    font-size: 2.65mm;
    line-height: 1.12;
    letter-spacing: 0.03mm;
  }

  .preview-card.density-compact .card-password {
    font-size: 2.4mm;
    letter-spacing: 0.01mm;
    line-height: 1.08;
  }

  .preview-card.density-tight .card-password {
    font-size: 2.1mm;
    letter-spacing: 0;
    line-height: 1.04;
  }

  .preview-card .card-footer {
    padding-top: 0.45mm;
  }

  .preview-card .hint-block {
    min-block-size: 4.4mm;
  }
}

@media print {
  @page {
    size: 91mm 55mm;
    margin: 0;
  }

  html,
  body {
    background: #fff;
    width: 91mm;
    height: 55mm;
  }

  body::before,
  body::after {
    display: none;
  }

  .screen-only {
    display: none !important;
  }

  .page-shell,
  .layout,
  .preview-panel,
  .sheet-preview {
    margin: 0;
    padding: 0;
    max-width: none;
    box-shadow: none;
    background: transparent;
    border: 0;
  }

  .layout {
    display: block;
  }

  .preview-panel {
    break-inside: avoid;
  }

  .preview-sheet-grid,
  .export-sheet-grid {
    width: var(--card-width);
    height: var(--card-height);
    padding: var(--print-safe-top) var(--print-safe-right) var(--print-safe-bottom)
      var(--print-safe-left);
    border: 0;
    border-radius: 0;
    box-shadow: none;
    background: #fff;
  }

  .password-card {
    inline-size: 100%;
    block-size: 100%;
    box-shadow: none;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
}