/* =========================================================
   Math Worksheet Generator — tool-specific styles.
   Layered on /tools/_shared/tool.css. Print credit uses the
   shared .print-credit component (default ON, opt-out).
   ========================================================= */

/* ---------- Controls ---------- */
.mw-controls {
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
  margin-bottom: var(--space-6);
}

.mw-row {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-4);
  align-items: end;
}
@media (min-width: 640px) {
  .mw-row {
    grid-template-columns: minmax(160px, 1fr) auto minmax(110px, auto);
    align-items: end;
  }
  .mw-header-row {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
  .mw-output-row {
    grid-template-columns: 1fr auto;
    align-items: center;
  }
}

.mw-field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.mw-field label {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-muted);
}
.mw-toggle-inline {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-transform: none;
  letter-spacing: 0.18em;
}
.mw-toggle-inline input {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
}

.mw-field input[type="text"],
.mw-field input[type="number"] {
  width: 100%;
  padding: 10px 14px;
  font: inherit;
  font-size: 15px;
  background: var(--surface-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  transition: var(--transition-colors);
}
.mw-field input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}
.mw-field input:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
.mw-field-narrow input[type="number"] { max-width: 110px; }

/* ---------- Segmented groups (operation, level, layout) ---------- */
.mw-segment-group {
  border: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}
.mw-segment-group legend {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-muted);
  padding: 0;
  margin-bottom: var(--space-2);
}
.mw-segment {
  display: inline-flex;
  flex-wrap: wrap;
  padding: 4px;
  background: var(--surface-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  align-self: flex-start;
  max-width: 100%;
}
.mw-seg-opt {
  position: relative;
  padding: 8px 14px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: calc(var(--radius) - 4px);
  transition: var(--transition-colors);
  text-align: center;
}
.mw-seg-opt input {
  position: absolute;
  opacity: 0;
  inset: 0;
  cursor: pointer;
}
.mw-seg-opt:hover { color: var(--text); }
.mw-seg-opt:has(input:checked) {
  background: var(--surface);
  color: var(--text);
  box-shadow: 0 1px 2px rgba(0,0,0,0.06);
}

/* ---------- Custom range pair ---------- */
.mw-custom-range {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-2);
}
.mw-custom-range label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
}
.mw-custom-range input[type="number"] {
  width: 90px;
  padding: 8px 12px;
  font: inherit;
  font-size: 15px;
  background: var(--surface-inset);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
}
.mw-custom-range input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-ring);
}

/* ---------- Pedagogy toggles ---------- */
.mw-pedagogy {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-4);
  background: var(--surface-2);
}
.mw-pedagogy legend {
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--text-muted);
  padding: 0 var(--space-2);
}
.mw-pedagogy-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}
@media (min-width: 640px) {
  .mw-pedagogy-grid { grid-template-columns: 1fr 1fr; }
}

.mw-toggle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  color: var(--text);
  cursor: pointer;
}
.mw-toggle input {
  width: 16px;
  height: 16px;
  accent-color: var(--accent);
  cursor: pointer;
}
.mw-toggle input:disabled + span {
  color: var(--text-subtle);
}

/* ---------- Actions ---------- */
.mw-actions {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
}
@media (min-width: 640px) {
  .mw-actions { grid-template-columns: 2fr 2fr 1fr; }
}
.mw-actions .btn {
  font-size: 15px;
  min-height: 50px;
}

/* ---------- Preview ---------- */
.mw-preview-wrap {
  border-top: 1px solid var(--border);
  padding-top: var(--space-5);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}
.mw-preview-wrap .section-eyebrow {
  margin-bottom: 0;
}

/* The .mw-page looks like a printed Letter sheet on screen. */
.mw-page {
  background: #FFFFFF;
  color: #18181B;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  padding: 48px 56px;
  max-width: 100%;
  font-family: var(--font-sans);
  font-size: 14px;
  line-height: 1.4;
}
.mw-page-key {
  /* Visually distinguish the answer key from the student sheet. */
  background: #FFFBEB;
}

/* ---------- Page header (title + meta) ---------- */
.mw-page-header {
  display: flex;
  flex-direction: column;
  gap: 12px;
  border-bottom: 1.5px solid #18181B;
  padding-bottom: 10px;
  margin-bottom: 22px;
}
.mw-page-header.is-empty {
  border-bottom: none;
  padding-bottom: 0;
  margin-bottom: 12px;
}
.mw-page-title {
  font-size: 20px;
  font-weight: 700;
  color: #18181B;
  letter-spacing: -0.005em;
  text-align: left;
  margin: 0;
}
.mw-page-meta {
  display: flex;
  flex-wrap: nowrap;
  align-items: baseline;
  gap: 6px var(--space-5);
}
.mw-page-meta:not(:has(> :not([hidden]))) {
  display: none;
}
.mw-meta-line {
  font-size: 15px;
  color: #18181B;
  display: flex;
  align-items: baseline;
  gap: 8px;
  flex: 3 1 0;
  min-width: 0;
}
.mw-meta-date {
  font-size: 13px;
  color: #3F3F46;
  flex: 1 1 0;
}
.mw-blank {
  display: inline-block;
  flex: 1 1 auto;
  border-bottom: 1px solid #18181B;
  height: 1em;
  min-width: 40px;
}
.mw-blank-date { min-width: 40px; }

.mw-page-title[hidden],
.mw-meta-line[hidden] {
  display: none;
}

/* ---------- Problem grid ---------- */
.mw-grid {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 22px 28px;
  counter-reset: mwprob;
}
.mw-grid[data-columns="1"] { grid-template-columns: 1fr; }
.mw-grid[data-columns="2"] { grid-template-columns: 1fr 1fr; }
.mw-grid[data-columns="3"] { grid-template-columns: repeat(3, 1fr); }
.mw-grid[data-columns="4"] { grid-template-columns: repeat(4, 1fr); }
.mw-grid[data-columns="5"] { grid-template-columns: repeat(5, 1fr); }
.mw-grid[data-columns="6"] { grid-template-columns: repeat(6, 1fr); }

.mw-prob {
  counter-increment: mwprob;
  display: flex;
  align-items: flex-start;
  gap: 8px;
  color: #18181B;
  font-variant-numeric: tabular-nums;
  break-inside: avoid;
  page-break-inside: avoid;
}
.mw-prob::before {
  content: counter(mwprob) ".";
  font-size: 12px;
  font-weight: 700;
  color: #52525B;
  min-width: 1.8em;
  text-align: right;
  padding-top: 2px;
  font-variant-numeric: tabular-nums;
}
.mw-prob-body {
  flex: 1;
  min-width: 0;
}

/* Vertical (stacked) problem layout */
.mw-vert {
  font-family: var(--font-mono);
  font-size: 17px;
  font-weight: 600;
  line-height: 1.25;
  white-space: pre;
  display: inline-block;
}
.mw-vert-op-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 6px;
}
.mw-vert-top,
.mw-vert-bot {
  display: block;
  text-align: right;
}
.mw-vert-op {
  display: inline-block;
  text-align: left;
  margin-right: 6px;
}
.mw-vert-rule {
  display: block;
  border-bottom: 1.5px solid #18181B;
  margin-top: 4px;
  height: 0;
}
.mw-vert-ans {
  display: block;
  height: 1.4em;
}

/* Horizontal problem layout */
.mw-horiz {
  font-family: var(--font-mono);
  font-size: 15px;
  font-weight: 600;
  color: #18181B;
  line-height: 1.4;
}
.mw-horiz-blank {
  display: inline-block;
  min-width: 2.4em;
  border-bottom: 1px solid #18181B;
  text-align: center;
  margin: 0 2px;
}

/* Answer-key variant — answers shown in accent ink */
.mw-grid-key .mw-vert-ans,
.mw-grid-key .mw-horiz-blank {
  color: #B45309;
  font-weight: 700;
}

/* Empty / message states */
.mw-empty {
  text-align: center;
  color: #52525B;
  font-size: 14px;
  padding: var(--space-6);
}

/* ---------- Print ---------- */
@media print {
  @page {
    size: 8.5in 11in;
    margin: 0.5in 0.6in;
  }
  html, body {
    background: #FFFFFF !important;
    color: #000000 !important;
    margin: 0 !important;
    padding: 0 !important;
  }
  .tool-header,
  .tool-footer,
  .mw-controls,
  .article,
  .attenda-cta,
  .skip-link,
  .widget-header,
  .mw-preview-wrap .section-eyebrow {
    display: none !important;
  }
  main { display: block !important; }
  .widget-wrap,
  .widget-card,
  .mw-preview-wrap {
    margin: 0 !important;
    padding: 0 !important;
    background: #FFFFFF !important;
    border: none !important;
    box-shadow: none !important;
    max-width: none !important;
    width: 100% !important;
    gap: 0 !important;
  }
  .mw-page {
    border: none !important;
    border-radius: 0 !important;
    box-shadow: none !important;
    padding: 0 !important;
    margin: 0 !important;
    background: #FFFFFF !important;
    color: #000000 !important;
    font-size: 12pt;
    width: 100% !important;
    max-width: none !important;
  }
  /* Force the answer-key page to start on its own sheet. */
  .mw-page-key {
    page-break-before: always;
    break-before: page;
  }
  .mw-page-header { border-bottom-color: #000 !important; }
  .mw-page-title,
  .mw-meta-line,
  .mw-prob,
  .mw-vert,
  .mw-horiz {
    color: #000 !important;
  }
  .mw-blank,
  .mw-horiz-blank,
  .mw-vert-rule {
    border-bottom-color: #000 !important;
  }
  /* Answer-key answers print in a bold dark color for clarity. */
  .mw-grid-key .mw-vert-ans,
  .mw-grid-key .mw-horiz-blank {
    color: #000 !important;
  }
}