:root {
  color-scheme: light;
  --bg: #f4efe6;
  --paper: #fffdf8;
  --ink: #1f2937;
  --muted: #6b7280;
  --accent: #d97706;
  --accent-deep: #9a3412;
  --line: #d6c7ae;
  --grid-line: #a8a29e;
  --shadow: 0 20px 60px rgba(78, 52, 20, 0.12);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Noto Sans TC", "Microsoft JhengHei", sans-serif;
  color: var(--ink);
  background:
    radial-gradient(circle at top left, rgba(217, 119, 6, 0.12), transparent 24%),
    linear-gradient(180deg, #fbf7ef 0%, var(--bg) 100%);
}

.app-shell {
  width: min(1200px, calc(100vw - 32px));
  margin: 0 auto;
  padding: 32px 0 48px;
}

.hero {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: end;
  margin-bottom: 24px;
}

.eyebrow {
  margin: 0 0 8px;
  font-size: 0.9rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent-deep);
}

.version-pill {
  display: inline-block;
  margin: 0 0 10px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(217, 119, 6, 0.12);
  color: var(--accent-deep);
  font-size: 0.92rem;
  font-weight: 700;
}

h1 {
  margin: 0;
  font-size: clamp(2rem, 4vw, 3.5rem);
  line-height: 1.1;
}

.subtitle {
  margin: 12px 0 0;
  color: var(--muted);
}

.primary-button {
  border: 0;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--accent-deep));
  color: white;
  font: inherit;
  padding: 14px 22px;
  cursor: pointer;
  box-shadow: var(--shadow);
}

.controls {
  display: grid;
  grid-template-columns: repeat(5, minmax(0, 1fr));
  gap: 16px;
  padding: 20px;
  border: 1px solid rgba(154, 52, 18, 0.12);
  border-radius: 24px;
  background: rgba(255, 253, 248, 0.85);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow);
}

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

.field span {
  font-weight: 700;
  font-size: 0.95rem;
}

.field input,
.field select {
  width: 100%;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: white;
  font: inherit;
}

.field-toggle {
  align-self: end;
}

.toggle-button {
  width: 100%;
  padding: 12px 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: white;
  color: var(--ink);
  font: inherit;
  cursor: pointer;
}

.pages {
  margin-top: 28px;
  display: grid;
  gap: 28px;
  justify-content: center;
}

.page {
  width: 210mm;
  height: 297mm;
  display: flex;
  flex-direction: column;
  background: var(--paper);
  border-radius: 28px;
  padding: 12mm;
  box-shadow: var(--shadow);
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  margin-bottom: 8mm;
}

.page-title,
.page-meta {
  margin: 0;
}

.page-title {
  font-size: 1.35rem;
}

.page-signature {
  display: flex;
  align-items: end;
  gap: 16px;
  min-width: 120px;
  color: var(--muted);
  font-weight: 700;
  text-align: center;
}

.pages.hide-signature .page-signature {
  visibility: hidden;
}

.signature-box {
  display: inline-block;
  width: 120px;
  height: 36px;
  border: 1.5px solid var(--grid-line);
  border-radius: 6px;
}

.page-meta {
  color: var(--muted);
  font-weight: 700;
  width: 100%;
  text-align: center;
  margin-top: 6mm;
}

.page-version {
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
  margin-top: 4mm;
}

.grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  grid-template-rows: repeat(4, minmax(0, 1fr));
  gap: 8mm;
  flex: 1;
  min-height: 0;
}

.cell {
  position: relative;
  min-height: 0;
  border: 2px solid var(--grid-line);
  border-radius: 22px;
  background:
    linear-gradient(180deg, rgba(217, 119, 6, 0.06), transparent 35%),
    white;
  overflow: hidden;
}

.cell-number {
  position: absolute;
  top: 12px;
  left: 14px;
  z-index: 1;
  min-width: 42px;
  padding: 6px 10px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid rgba(154, 52, 18, 0.18);
  color: var(--accent-deep);
  font-weight: 800;
}

.cell-guides {
  position: absolute;
  inset: 0;
}

.guide {
  position: absolute;
  background: rgba(107, 114, 128, 0.35);
}

.guide.horizontal {
  left: 18px;
  right: 18px;
  top: 50%;
  height: 1px;
  transform: translateY(-50%);
}

.guide.vertical {
  top: 18px;
  bottom: 18px;
  left: 50%;
  width: 1px;
  transform: translateX(-50%);
}

.guide.dot {
  top: 50%;
  left: 50%;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  transform: translate(-50%, -50%);
}

.pages.no-guides .cell-guides {
  display: none;
}

.pages.guide-horizontal .guide.vertical,
.pages.guide-horizontal .guide.dot {
  display: none;
}

.pages.guide-cross .guide.dot {
  display: none;
}

.pages.guide-dot .guide.horizontal,
.pages.guide-dot .guide.vertical {
  display: none;
}

@media (max-width: 900px) {
  .controls {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .page {
    width: 100%;
    height: auto;
  }

  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .cell {
    min-height: 220px;
  }
}

@media (max-width: 640px) {
  .app-shell {
    width: min(100vw - 20px, 100%);
    padding-top: 20px;
  }

  .hero {
    flex-direction: column;
    align-items: start;
  }

  .page-header {
    align-items: start;
    gap: 10px;
    margin-bottom: 4mm;
  }

  .page-signature {
    gap: 10px;
    min-width: 0;
  }

  .page-meta {
    margin-top: 4mm;
    text-align: center;
  }

  .page-version {
    text-align: center;
  }

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

  .page {
    width: min(100%, 210mm);
    height: auto;
    aspect-ratio: 210 / 297;
    padding: 10px;
  }

  .page-title {
    font-size: 1.1rem;
  }

  .grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
    grid-template-rows: repeat(4, minmax(0, 1fr));
    gap: 10px;
  }

  .cell {
    min-height: 0;
    border-radius: 14px;
  }

  .cell-number {
    top: 8px;
    left: 8px;
    min-width: 34px;
    padding: 4px 8px;
    font-size: 0.9rem;
  }

  .signature-box {
    width: 90px;
    height: 28px;
  }
}

@media print {
  @page {
    size: A4 portrait;
    margin: 0;
  }

  body {
    background: white;
  }

  .app-shell {
    width: auto;
    padding: 0;
  }

  .hero,
  .controls,
  .primary-button {
    display: none;
  }

  .pages {
    margin: 0;
    gap: 0;
  }

  .page {
    width: 210mm;
    height: 297mm;
    box-shadow: none;
    border-radius: 0;
    padding: 12mm;
    page-break-after: always;
  }

  .page-meta {
    margin-top: 6mm;
    text-align: center;
  }

  .page-version {
    text-align: center;
  }

  .page:last-child {
    page-break-after: auto;
  }

  .grid {
    gap: 10mm;
  }

  .cell {
    min-height: 0;
    break-inside: avoid;
  }
}