/* Chinese copybook tool */
.yw-tools {
  margin-top: 22px;
  padding: 18px;
  background: #ffffff;
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 12px;
  box-shadow: 0 14px 36px rgba(15, 23, 42, 0.06);
}

.yw-tool-tabs {
  display: inline-grid;
  grid-template-columns: repeat(2, minmax(120px, 1fr));
  gap: 4px;
  padding: 4px;
  margin-bottom: 16px;
  background: #f1f7ff;
  border: 1px solid #dbeafe;
  border-radius: 8px;
}

.yw-tool-tab {
  height: 38px;
  padding: 0 14px;
  color: #475569;
  background: transparent;
  border: 0;
  border-radius: 6px;
  font-weight: 800;
  cursor: pointer;
}

.yw-tool-tab.active {
  color: #fff;
  background: var(--pdf-blue);
}

.yw-tool-panel {
  display: none;
}

.yw-tool-panel.active {
  display: block;
}

.yw-read-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.yw-read-links a {
  display: inline-flex;
  align-items: center;
  min-height: 38px;
  padding: 0 14px;
  color: var(--pdf-blue);
  background: #f7ffff;
  border: 1px solid var(--pdf-cyan);
  border-radius: 8px;
  font-weight: 800;
}

.copybook-topbar {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  align-items: flex-end;
  margin-bottom: 14px;
}

.copybook-title-block h2 {
  color: var(--ink);
  font-size: 24px;
  line-height: 1.2;
}

.copybook-summary {
  margin-top: 6px;
  color: var(--muted);
  font-size: 14px;
}

.copybook-controls {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) minmax(150px, 0.35fr) minmax(106px, 0.24fr) minmax(96px, 0.22fr) auto auto;
  gap: 10px;
  align-items: end;
  padding: 12px;
  background: rgba(255, 255, 255, 0.86);
  border: 1px solid rgba(156, 170, 189, 0.42);
  border-radius: 8px;
}

.copybook-controls label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
}

.copybook-controls textarea,
.copybook-controls select {
  width: 100%;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  outline: none;
}

.copybook-controls textarea {
  min-height: 82px;
  padding: 9px 10px;
  resize: vertical;
  line-height: 1.6;
}

.copybook-controls select {
  height: 40px;
  padding: 0 10px;
}

.copybook-btn {
  height: 40px;
  min-width: 74px;
  padding: 0 14px;
  color: var(--ink);
  background: #fff;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-weight: 800;
  cursor: pointer;
}

.copybook-btn.primary {
  color: #fff;
  border-color: var(--pdf-blue);
  background: var(--pdf-blue);
}

.copybook-btn.print {
  color: #fff;
  border-color: #0f766e;
  background: #0f766e;
}

.stroke-panel {
  display: grid;
  grid-template-columns: minmax(170px, 0.28fr) 150px auto;
  gap: 16px;
  align-items: center;
  margin: 14px 0;
  padding: 14px;
  background: #f8fbff;
  border: 1px solid rgba(156, 170, 189, 0.42);
  border-radius: 8px;
}

.stroke-title {
  color: var(--ink);
  font-size: 18px;
  font-weight: 900;
}

.stroke-hint {
  margin-top: 6px;
  color: var(--muted);
  font-size: 13px;
  line-height: 1.6;
}

.stroke-board {
  width: 138px;
  height: 138px;
  display: grid;
  place-items: center;
  background: #fffdf7;
  border: 1px solid var(--line);
}

.stroke-board svg {
  width: 100%;
  height: 100%;
  display: block;
}

.stroke-actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.copybook-shell {
  margin-top: 14px;
  padding: 18px;
  overflow-x: auto;
  background: #fffdf7;
  border: 1px solid #9caabd;
  border-radius: 8px;
}

.copybook-page {
  min-height: 520px;
  padding: 18px;
  background: #fffdf7;
  border: 1px solid rgba(156, 170, 189, 0.55);
}

.copybook-title {
  margin-bottom: 12px;
  color: var(--muted);
  font-size: 14px;
  font-weight: 800;
}

.copybook-grid {
  --cell-size: 48px;
  --copy-count: 20;
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-start;
}

.copybook-grid.size-small {
  --cell-size: 42px;
}

.copybook-grid.size-large {
  --cell-size: 56px;
}

.copy-char-group {
  display: flex;
  flex-direction: column;
  gap: 7px;
  break-inside: avoid;
}

.copy-row {
  display: grid;
  grid-template-columns: repeat(var(--copy-count), var(--cell-size));
  gap: 4px;
  break-inside: avoid;
}

.copy-cell {
  position: relative;
  width: var(--cell-size);
  height: var(--cell-size);
  display: grid;
  place-items: center;
  overflow: hidden;
  padding: 0;
  background-color: #fffdf7;
  border: 1px solid #8ea0b6;
  border-radius: 0;
  cursor: pointer;
}

.copy-cell.tian {
  background-image:
    linear-gradient(to right, transparent calc(50% - 0.5px), rgba(142, 160, 182, 0.48) 50%, transparent calc(50% + 0.5px)),
    linear-gradient(to bottom, transparent calc(50% - 0.5px), rgba(142, 160, 182, 0.48) 50%, transparent calc(50% + 0.5px));
}

.copy-cell.mi {
  background-image:
    linear-gradient(to right, transparent calc(50% - 0.5px), rgba(142, 160, 182, 0.45) 50%, transparent calc(50% + 0.5px)),
    linear-gradient(to bottom, transparent calc(50% - 0.5px), rgba(142, 160, 182, 0.45) 50%, transparent calc(50% + 0.5px)),
    linear-gradient(45deg, transparent calc(50% - 0.5px), rgba(142, 160, 182, 0.32) 50%, transparent calc(50% + 0.5px)),
    linear-gradient(-45deg, transparent calc(50% - 0.5px), rgba(142, 160, 182, 0.32) 50%, transparent calc(50% + 0.5px));
}

.copy-char {
  color: rgba(17, 24, 39, 0.86);
  font-family: "KaiTi", "STKaiti", "Kaiti SC", "Songti SC", serif;
  font-size: calc(var(--cell-size) * 0.62);
  line-height: 1;
}

.copy-char.trace {
  color: rgba(17, 24, 39, 0.18);
}

.stroke-demo-cell {
  background-color: #fffaf0;
}

.stroke-svg {
  width: 86%;
  height: 86%;
}

.copybook-status {
  min-height: 22px;
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
}

@media (max-width: 900px) {
  .copybook-topbar {
    align-items: stretch;
    flex-direction: column;
  }

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

  .stroke-panel {
    grid-template-columns: 1fr;
  }
}

@media print {
  body.copybook-print .layout,
  body.copybook-print .hero,
  body.copybook-print .yw-tool-tabs,
  body.copybook-print .yw-read-links,
  body.copybook-print .stroke-panel,
  body.copybook-print .copybook-topbar,
  body.copybook-print .copybook-status {
    display: none !important;
  }

  body.copybook-print .page {
    max-width: none;
    padding: 0;
  }

  body.copybook-print .yw-tools {
    margin: 0;
    padding: 0;
    border: 0;
    border-radius: 0;
    box-shadow: none;
  }

  body.copybook-print .yw-tool-panel {
    display: none !important;
  }

  body.copybook-print #ywCopybookPanel {
    display: block !important;
  }

  body.copybook-print .copybook-shell {
    margin-top: 0;
    padding: 0;
    overflow: visible;
    border: 0;
    border-radius: 0;
  }

  body.copybook-print .copybook-page {
    min-height: 0;
    padding: 0;
    border: 0;
  }

  body.copybook-print .copybook-title {
    margin-bottom: 5px;
    font-size: 10px;
  }

  body.copybook-print .copybook-grid {
    --cell-size: 44px;
    gap: 6px;
  }

  body.copybook-print .copybook-grid.size-small {
    --cell-size: 39px;
  }

  body.copybook-print .copybook-grid.size-large {
    --cell-size: 48px;
  }

  body.copybook-print .copy-char-group {
    gap: 4px;
  }

  body.copybook-print .copy-row {
    gap: 3px;
  }
}