/* === Worksheet Full-Width Layout === */
.worksheet-main {
  max-width: 100%;
}

.worksheet-top {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.worksheet-layout {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.worksheet-layout--split {
  max-width: fit-content;
  display: grid;
  grid-template-columns: 794px 794px;
  gap: 2rem;
  align-items: start;
}

@media (max-width: 900px) {
  .worksheet-layout--split {
    grid-template-columns: 1fr;
  }
}

.questions-col {
  min-width: 0;
}

.load-more-container {
  display: flex;
  justify-content: center;
  padding: 1rem 0 0.5rem;
}

/* === Worksheet Print Styles === */
.worksheet-controls {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 2rem;
}

.worksheet-primary-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-end;
}

.worksheet-secondary-actions {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  align-items: center;
}

.worksheet-actions {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-left: auto;
}

/* === Print Preview === */
.worksheet-preview-outer {
  overflow-x: auto;
}

.worksheet-preview {
  width: 794px; /* A4 at 96dpi */
  min-height: 1123px; /* A4 height at 96dpi */
  font-size: 11pt; /* Match print font size for accurate page break calculation */
  background: #fff;
  border: 2px solid #b0b0b0;
  border-radius: var(--radius);
  padding: 0 49px 72px;
  box-sizing: border-box;
  margin: 0 auto;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.25);
  /* Always render as light mode */
  --color-dark: #334155;
  --color-secondary: #475569;
  --color-accent: #F87171;
  --color-text: #1E293B;
  --color-text-light: #64748B;
  --color-card-bg: #ffffff;
  --color-bg: #F8FAFC;
  --color-border: #E2E8F0;
  color: #1E293B;
}

.worksheet-header {
  margin-bottom: 1rem;
  padding: 1rem;
  border-radius: 8px;
  background: #fff1f1;
  -webkit-print-color-adjust: exact;
  print-color-adjust: exact;
}

.worksheet-header__top {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-dark);
}

.worksheet-header__brand {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.6rem;
  margin-bottom: 0.5rem;
}

.worksheet-header__logo {
  width: 35px;
  height: 35px;
  order: 1;
}

.worksheet-header__brand-text {
  display: flex;
  flex-direction: column;
  gap: 0.1rem;
}

.worksheet-header__brand-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-dark);
}

.worksheet-header__brand-name[contenteditable] {
  outline: none;
  cursor: text;
  border-radius: 3px;
  padding: 1px 4px;
  transition: box-shadow 0.15s;
}

.worksheet-header__brand-name[contenteditable]:focus {
  box-shadow: 0 0 0 2px var(--color-accent, #F87171);
  background: var(--color-card-bg, #fff);
}

.worksheet-header__brand-name[contenteditable]:empty::before {
  content: attr(data-placeholder);
  opacity: 0.4;
}

.worksheet-header__brand-url {
  font-size: 0.75rem;
  font-weight: 400;
  color: #888;
}

.worksheet-header__score-box {
  display: inline-block;
  width: 80px;
  height: 2.2em;
  border: 1.5px solid var(--color-dark);
  border-radius: 4px;
  vertical-align: middle;
  background: #fff;
  -webkit-print-color-adjust: exact;
  print-color-adjust: exact;
}

.worksheet-header__subtitle {
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: 0.35rem;
}

.worksheet-question__difficulty {
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-left: 0.2rem;
  margin-right: 0.4rem;
  vertical-align: middle;
}

.worksheet-question {
  position: relative;
  margin-bottom: 1.5rem;
  page-break-inside: avoid;
}

.worksheet-question__remove {
  position: absolute;
  top: 0;
  right: 0;
  background: none;
  border: none;
  color: var(--color-text-muted, #888);
  cursor: pointer;
  font-size: 0.85rem;
  padding: 0 0.25rem;
  line-height: 1;
}

.worksheet-question__remove:hover {
  color: var(--color-danger, #dc2626);
}

.worksheet-question__flag {
  position: absolute;
  top: 0;
  right: 1.25rem;
  background: none;
  border: none;
  color: var(--color-text-muted, #888);
  cursor: pointer;
  padding: 0.1rem 0.25rem;
  line-height: 1;
  display: inline-flex;
  align-items: center;
}

.worksheet-question__flag:hover {
  color: var(--color-accent);
}

.worksheet-question__meta {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-bottom: 0.25rem;
}

.worksheet-question__number {
  font-weight: 700;
  margin-right: 0.25rem;
}

.worksheet-question__text {
  display: block;
  line-height: 1.8;
}

.worksheet-question__text img {
  max-width: 696px;
  margin-top: 0.5rem;
}

.worksheet-question__answer-space {
  position: relative;
  margin-top: 0.5rem;
  border: 1.5px dashed #94a3b8;
  border-radius: 4px;
}

.answer-space-label {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  font-size: 0.7rem;
  color: #94a3b8;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  pointer-events: none;
  user-select: none;
  white-space: nowrap;
}

.answer-space-handle {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 14px;
  cursor: ns-resize;
  display: flex;
  align-items: center;
  justify-content: center;
}

.answer-space-handle::after {
  content: '';
  width: 36px;
  height: 4px;
  border-top: 1.5px solid #94a3b8;
  border-bottom: 1.5px solid #94a3b8;
}

.answer-space-remove {
  position: absolute;
  top: 4px;
  right: 4px;
  background: none;
  border: none;
  color: #94a3b8;
  cursor: pointer;
  font-size: 0.75rem;
  line-height: 1;
  padding: 1px 3px;
}

.answer-space-remove:hover {
  color: #dc2626;
}

.answer-space-add {
  display: block;
  margin-top: 0.5rem;
  background: none;
  border: 1.5px dashed #94a3b8;
  border-radius: 4px;
  color: #94a3b8;
  cursor: pointer;
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.6rem;
  text-transform: uppercase;
}

.answer-space-add:hover {
  border-color: #64748b;
  color: #64748b;
}

/* === Worksheet Footer === */
.worksheet-footer {
  display: none;
}

/* === Answer Key === */
.answer-key {
  margin-top: 3rem;
  padding-top: 1rem;
  padding-right: 1rem;
  border-right: 6px solid #f87171;
  -webkit-print-color-adjust: exact;
  print-color-adjust: exact;
  font-size: 0.9rem;
}

.answer-key__title {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.answer-key__item {
  margin-bottom: 1rem;
}

.answer-key__item img {
  display: block;
  margin: 0.25rem 0;
  zoom: 0.7;
}

.answer-key__feedback {
  margin-top: 0.5rem;
  padding: 0.5rem 0.75rem;
  border-left: 3px solid #f59e0b;
  background: #fffbeb;
  -webkit-print-color-adjust: exact;
  print-color-adjust: exact;
}

.answer-key__feedback-label {
  display: none;
}

.answer-key__feedback img {
  display: block;
  margin: 0.25rem 0;
  zoom: 0.7;
}

/* === Page Break Indicators (screen only, hidden on print via .no-print) === */
.page-break-indicator {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin: 0.75rem -49px;
  padding: 0.3rem 49px;
  background: #e2e8f0;
  border-top: 1px dashed #94a3b8;
  border-bottom: 1px dashed #94a3b8;
  user-select: none;
}

.page-break-indicator::before,
.page-break-indicator::after {
  content: '';
  flex: 1;
  height: 1px;
  background: #94a3b8;
}

.page-break-indicator__label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #64748b;
  white-space: nowrap;
}

/* === Print Media Query === */
@media print {
  .site-header,
  .filter-bar,
  .worksheet-controls,
  .worksheet-actions,
  .load-more-container,
  .btn,
  .question-card__checkbox,
  #questions-container,
  .toast,
  .worksheet-top,
  .questions-col {
    display: none;
  }

  .worksheet-layout,
  .worksheet-layout--split {
    display: block;
    padding: 0;
    margin: 0;
    max-width: 100%;
  }

  body {
    font-size: 11pt;
    color: #000;
  }

  .main-content {
    max-width: 100%;
    padding: 0;
    margin: 0;
  }

  .worksheet-preview-outer {
    background: none;
    padding: 0;
    overflow: visible;
  }

  .worksheet-preview {
    width: auto;
    min-height: 0;
    border: none;
    padding: 0;
    box-shadow: none;
  }

  .worksheet-header {
    border-color: #000;
    background: #fff1f1;
    margin-bottom: 1rem;
    padding: 0.75rem;
  }

  .worksheet-header__score-box {
    border-color: #000;
    background: #fff;
  }

  .worksheet-question {
    page-break-inside: avoid;
  }

  .katex-display {
    break-inside: avoid;
  }

  .worksheet-question__answer-space {
    border: none;
  }

  .no-print {
    display: none !important;
  }

  .worksheet-footer {
    display: none;
  }

  @page {
    margin-top: 1.3cm;
    margin-bottom: 1.3cm;
    margin-left: 1.3cm;
    margin-right: 1.3cm;
    @bottom-left {
      content: 'https://mathsbase.mrdingmaths.com/';
      font-family: sans-serif;
      font-size: 8pt;
      color: #666;
      vertical-align: top;
      margin-left: 0.5cm;
    }
    @bottom-right {
      content: 'Page ' counter(page);
      font-family: sans-serif;
      font-size: 8pt;
      color: #666;
      vertical-align: top;
      margin-right: 0.5cm;
    }
  }

  .answer-key {
    page-break-before: always;
    margin-top: 0;
    border-right-color: #f87171;
    font-size: 9pt;
  }

  .answer-key__item {
    break-inside: avoid;
  }

  .answer-key__feedback {
    font-size: 8.5pt;
  }
}

/* === Force light mode inside worksheet preview (dark mode overrides) === */
[data-theme="dark"] .worksheet-preview .badge--difficulty {
  background: #f3f4f6;
  color: #374151;
  border-color: #d1d5db;
}
[data-theme="dark"] .worksheet-preview .badge--foundation {
  background: #f1f5f9;
  color: #334155;
  border-color: #cbd5e1;
}
[data-theme="dark"] .worksheet-preview .badge--development {
  background: #e0f2fe;
  color: #0369a1;
  border-color: #7dd3fc;
}
[data-theme="dark"] .worksheet-preview .badge--mastery {
  background: #ede9fe;
  color: #6d28d9;
  border-color: #c4b5fd;
}
[data-theme="dark"] .worksheet-preview .badge--challenge {
  background: #fce7f3;
  color: #9d174d;
  border-color: #f9a8d4;
}
[data-theme="dark"] .worksheet-preview .badge--source,
[data-theme="dark"] .worksheet-preview .badge--stage,
[data-theme="dark"] .worksheet-preview .badge--course {
  background: #f1f5f9;
  color: #475569;
  border-color: #cbd5e1;
}
[data-theme="dark"] .answer-key__feedback {
  background: #2d2a1e;
  color: var(--color-text, #e2e8f0);
  border-left-color: #f59e0b;
}
[data-theme="dark"] .worksheet-preview .answer-key__feedback {
  background: #fffbeb;
  color: #1e293b;
  border-left-color: #f59e0b;
}
[data-theme="dark"] .worksheet-preview .answer-key__feedback-label {
  display: none;
}