/* ── Reset & design tokens ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  /* ── Brand palette: Colegio Epullay Montessori ── */
  --blue:    #1E22AA;   /* Pantone 2736 C */
  --green:   #78BE21;   /* Pantone 368 C  */
  --dark:    #3D3935;   /* Pantone Black 7 C */

  /* Semantic aliases */
  --primary:  var(--blue);
  --success:  var(--green);
  --danger:   #C8211B;
  --warning:  #E07800;

  /* Surfaces */
  --bg:       #F3F3EF;
  --card:     #ffffff;
  --border:   #D8D8D4;
  --text:     var(--dark);
  --muted:    #7B7775;

  /* Misc */
  --radius:   10px;
  --shadow:   0 2px 8px rgba(30,34,170,.08);
  --shadow-lg: 0 8px 36px rgba(30,34,170,.18);
}

body {
  font-family: 'Zilla Slab', Georgia, serif;
  background: var(--bg);
  color: var(--text);
  font-size: 15px;
  min-height: 100vh;
}

/* ── Header ─────────────────────────────────────────────────────────────── */
header {
  background: var(--card);
  border-bottom: 3px solid var(--blue);
  padding: 12px 20px 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: 0 2px 8px rgba(30,34,170,.08);
}

.header-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
  gap: 12px;
  flex-wrap: wrap;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.header-logo img {
  width: auto;
  height: 3rem;
  flex-shrink: 0;
}

.header-titles {
  display: flex;
  flex-direction: column;
}

.header-school {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.9px;
  color: var(--blue);
}

header h1 {
  font-size: 19px;
  font-weight: 700;
  color: var(--dark);
  line-height: 1.2;
}

/* ── Key badge ───────────────────────────────────────────────────────────── */
.key-badge {
  font-size: 12px;
  padding: 4px 12px;
  border-radius: 12px;
  border: 1.5px solid var(--border);
  color: var(--muted);
  background: var(--bg);
  font-family: 'Zilla Slab', serif;
}
.key-badge--set {
  border-color: var(--green);
  color: #4a8500;
  background: rgba(120,190,33,.09);
}

/* ── Tabs ───────────────────────────────────────────────────────────────── */
.tabs { display: flex; gap: 3px; }
.tabs button {
  padding: 8px 20px;
  border: none;
  border-radius: var(--radius) var(--radius) 0 0;
  background: transparent;
  cursor: pointer;
  font-size: 14px;
  font-family: 'Zilla Slab', serif;
  font-weight: 500;
  color: var(--muted);
  transition: background .15s, color .15s;
}
.tabs button:hover:not(.active) {
  background: rgba(30,34,170,.07);
  color: var(--blue);
}
.tabs button.active {
  background: var(--blue);
  color: #fff;
}

/* ── Layout ─────────────────────────────────────────────────────────────── */
main { padding: 22px 20px; max-width: 1000px; margin: 0 auto; }
.tab-section { display: none; }
.tab-section.active { display: block; }
.muted { color: var(--muted); }
.tc { text-align: center; }

/* ── Buttons ────────────────────────────────────────────────────────────── */
.btn-primary {
  background: var(--blue); color: #fff; border: none;
  padding: 10px 26px; border-radius: var(--radius);
  font-size: 15px; font-family: 'Zilla Slab', serif;
  font-weight: 600; cursor: pointer; transition: opacity .15s;
}
.btn-primary:hover   { opacity: .88; }
.btn-primary:disabled { opacity: .4; cursor: default; }

.btn-sm-primary {
  background: var(--blue); color: #fff; border: none;
  padding: 6px 16px; border-radius: var(--radius);
  font-size: 13px; font-family: 'Zilla Slab', serif;
  cursor: pointer; transition: opacity .15s;
}
.btn-sm-primary:hover { opacity: .88; }

.btn-secondary {
  background: var(--card); color: var(--blue);
  border: 1.5px solid var(--blue);
  padding: 10px 20px; border-radius: var(--radius);
  font-size: 14px; font-family: 'Zilla Slab', serif;
  cursor: pointer; transition: background .15s;
}
.btn-secondary:hover { background: rgba(30,34,170,.06); }

.btn-danger {
  background: var(--danger); color: #fff; border: none;
  padding: 8px 16px; border-radius: var(--radius);
  font-size: 14px; font-family: 'Zilla Slab', serif;
  cursor: pointer; transition: opacity .15s;
}
.btn-danger:hover { opacity: .88; }

.btn-ghost {
  background: transparent; border: 1.5px solid var(--border);
  color: var(--muted); padding: 8px 16px; border-radius: var(--radius);
  font-size: 14px; font-family: 'Zilla Slab', serif; cursor: pointer;
}
.btn-ghost:hover { border-color: var(--muted); }

.btn-sm {
  background: var(--card); border: 1.5px solid var(--border);
  padding: 4px 12px; border-radius: 6px;
  font-size: 12px; font-family: 'Zilla Slab', serif;
  cursor: pointer; transition: border-color .15s, color .15s;
}
.btn-sm:hover { border-color: var(--blue); color: var(--blue); }

.danger-sm { border-color: var(--danger) !important; color: var(--danger) !important; }
.danger-sm:hover { background: rgba(200,33,27,.06) !important; }

.file-label { cursor: pointer; }

/* ── Scan tab ───────────────────────────────────────────────────────────── */
.scan-key-bar {
  display: flex; align-items: center; gap: 10px; flex-wrap: wrap;
  background: var(--card); border: 1.5px solid var(--border);
  border-radius: var(--radius); padding: 10px 14px;
  margin-bottom: 14px; font-size: 14px;
}

.batch-dropzone {
  border: 2.5px dashed var(--border); border-radius: 14px;
  padding: 52px 24px; text-align: center; cursor: pointer;
  background: var(--card); transition: border-color .2s, background .2s;
  margin-bottom: 14px;
}
.batch-dropzone p { color: var(--muted); }
.batch-dropzone .hint { margin-top: 6px; font-size: 13px; }
.batch-dropzone:hover,
.batch-dropzone.drag-over {
  border-color: var(--green);
  background: rgba(120,190,33,.04);
}

.batch-controls {
  display: flex; align-items: center; justify-content: space-between;
  flex-wrap: wrap; gap: 10px; margin-bottom: 12px;
}
.batch-controls > div { display: flex; gap: 8px; flex-wrap: wrap; }

/* Progress */
.progress-wrap { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; }
.progress-bar {
  flex: 1; height: 8px; background: var(--border);
  border-radius: 4px; overflow: hidden;
}
#progress-bar-fill {
  height: 100%; width: 0; background: var(--green);
  border-radius: 4px; transition: width .3s;
}

/* Tables */
.table-wrapper {
  overflow: auto; max-height: 520px;
  border: 1.5px solid var(--border); border-radius: var(--radius);
  background: var(--card); margin-bottom: 14px;
}
table { width: 100%; border-collapse: collapse; font-size: 13px; }
th {
  position: sticky; top: 0;
  background: var(--blue); color: #fff;
  padding: 9px 10px; text-align: left;
  font-weight: 700; font-family: 'Zilla Slab', serif;
  border-bottom: none;
}
td { padding: 6px 10px; border-bottom: 1px solid rgba(0,0,0,.04); }
tr:last-child td { border-bottom: none; }
tr:hover td { background: rgba(30,34,170,.03); }

.td-num  { width: 36px; color: var(--muted); text-align: right; }
.td-file { max-width: 220px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.td-rut  { font-family: monospace; }
.td-course { font-size: 12px; color: var(--muted); }
.td-letter { font-size: 12px; font-weight: 700; }
.td-test { font-size: 12px; max-width: 140px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.td-pct  { font-weight: 700; color: var(--blue); }
.td-corr { color: var(--green); font-weight: 700; }

.row-ok   { }
.row-warn { background: rgba(224,120,0,.06); }
.row-err  { background: rgba(200,33,27,.06); }

.st-icon    { font-size: 14px; }
.st-ok      { color: var(--green); }
.st-warn    { color: var(--warning); }
.st-err     { color: var(--danger); }
.st-proc    { }
.st-pending { color: var(--border); }

.badge-warn {
  display: inline-block; font-size: 11px; padding: 1px 6px;
  background: rgba(224,120,0,.14); color: var(--warning);
  border-radius: 4px; margin-right: 4px;
}

.export-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 4px; }

/* ── Cards ──────────────────────────────────────────────────────────────── */
.card {
  background: var(--card); border-radius: var(--radius);
  padding: 16px; border: 1.5px solid var(--border); margin-bottom: 14px;
}
.card-label {
  font-size: 11px; font-weight: 700; text-transform: uppercase;
  letter-spacing: .7px; color: var(--muted); margin-bottom: 10px;
}
.card-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 10px;
}

/* Active key banner */
.active-key-banner { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.key-meta { font-size: 12px; color: var(--muted); }

/* Key form */
.key-form { display: flex; flex-direction: column; gap: 12px; }
.key-form label {
  display: flex; flex-direction: column; gap: 4px;
  font-size: 13px; color: var(--muted);
}
.key-form input[type=text] {
  padding: 9px 12px; border: 1.5px solid var(--border);
  border-radius: var(--radius); font-size: 14px;
  font-family: 'Zilla Slab', serif;
  transition: border-color .15s;
}
.key-form input[type=text]:focus { outline: none; border-color: var(--blue); }
.key-form textarea {
  padding: 9px 12px; border: 1.5px solid var(--border);
  border-radius: var(--radius); font-size: 14px;
  font-family: monospace; resize: vertical; letter-spacing: 1px;
  transition: border-color .15s;
}
.key-form textarea:focus { outline: none; border-color: var(--blue); }
.char-count { font-size: 12px; color: var(--muted); }
.key-form-actions { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

/* Keys list */
.key-row {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 0; border-bottom: 1px solid rgba(0,0,0,.05);
  gap: 10px; flex-wrap: wrap;
}
.key-row:last-child { border-bottom: none; }
.key-row--active {
  background: rgba(120,190,33,.06);
  border-radius: 8px; padding: 10px 8px;
}
.key-row-info { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.key-row-actions { display: flex; gap: 6px; }

.badge-active {
  font-size: 11px; padding: 2px 8px;
  background: rgba(120,190,33,.18); color: #4a8500;
  border-radius: 4px; font-weight: 700;
}

/* ── Results tab ────────────────────────────────────────────────────────── */
.section-header {
  display: flex; align-items: center; justify-content: space-between;
  margin-bottom: 16px; flex-wrap: wrap; gap: 10px;
}
.section-header h2 { font-size: 20px; font-weight: 700; }
.export-actions { display: flex; gap: 8px; flex-wrap: wrap; }

#results-table th,
#results-table td { padding: 10px 12px; }
#results-table th { text-align: left; }

td.correct { color: var(--green); font-weight: 700; }
td.wrong   { color: var(--danger); font-weight: 700; }
td.omit    { color: var(--muted);  font-weight: 600; }

/* ── Stats tab ──────────────────────────────────────────────────────────── */
.stat-cards { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 24px; }
.stat-card {
  background: var(--card); border-radius: 12px; padding: 14px 20px;
  display: flex; flex-direction: column; gap: 4px;
  border: 1.5px solid var(--border); box-shadow: var(--shadow);
}
.stat-val   { font-size: 28px; font-weight: 700; color: var(--blue); }
.stat-label { font-size: 12px; color: var(--muted); }

.charts-grid {
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 16px; margin-bottom: 24px;
}
@media (max-width: 600px) { .charts-grid { grid-template-columns: 1fr; } }

.chart-card {
  background: var(--card); border-radius: 12px; padding: 16px;
  border: 1.5px solid var(--border); box-shadow: var(--shadow);
}
.chart-card h3 { font-size: 13px; color: var(--muted); margin-bottom: 12px; font-weight: 600; }

.student-search {
  background: var(--card); border-radius: 12px; padding: 18px;
  border: 1.5px solid var(--border); box-shadow: var(--shadow);
}
.student-search h3 { margin-bottom: 12px; font-size: 16px; font-weight: 700; }
.search-row { display: flex; gap: 8px; margin-bottom: 14px; }
.search-row input {
  padding: 9px 12px; border: 1.5px solid var(--border);
  border-radius: var(--radius); font-size: 14px;
  font-family: 'Zilla Slab', serif; flex: 1;
  transition: border-color .15s;
}
.search-row input:focus { outline: none; border-color: var(--blue); }
#stats-student { margin-top: 12px; }
.student-chart-wrap { margin-top: 10px; }

/* ── Diagnostic modal ───────────────────────────────────────────────────── */
.modal-overlay {
  position: fixed; inset: 0;
  background: rgba(30,34,170,.32);
  backdrop-filter: blur(2px);
  display: flex; align-items: center; justify-content: center;
  z-index: 1000; padding: 16px;
}
.modal-box {
  background: var(--card); border-radius: 14px;
  max-width: 940px; width: 100%; max-height: 92vh;
  display: flex; flex-direction: column; overflow: hidden;
  box-shadow: var(--shadow-lg); border: 1.5px solid var(--border);
}
.modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 12px 16px; border-bottom: 1.5px solid var(--border);
  flex-shrink: 0; background: var(--blue);
}
.modal-title {
  font-size: 13px; font-weight: 600; font-family: monospace;
  overflow: hidden; text-overflow: ellipsis; white-space: nowrap;
  color: #fff;
}
.modal-close {
  padding: 4px 10px; font-size: 16px; line-height: 1;
  color: #fff !important; border-color: rgba(255,255,255,.35) !important;
}
.modal-close:hover { background: rgba(255,255,255,.15) !important; }

.modal-body {
  display: flex; gap: 16px; padding: 16px;
  overflow: auto; flex: 1; min-height: 0;
}
.diag-canvas-wrap {
  flex: 1; min-width: 0; display: flex;
  align-items: flex-start; justify-content: center; overflow: auto;
}
.diag-canvas-wrap canvas {
  max-width: 100%; border-radius: 8px;
  border: 1.5px solid var(--border); display: block;
}
.diag-info {
  flex: 0 0 200px; display: flex; flex-direction: column; gap: 8px;
}
.diag-row {
  display: flex; flex-direction: column; padding: 8px 12px;
  background: var(--bg); border-radius: 8px;
  border: 1px solid var(--border);
}
.diag-row span { font-size: 11px; color: var(--muted); margin-bottom: 2px; }
.diag-row strong { font-size: 14px; font-weight: 700; color: var(--dark); }

/* ── Responsive ─────────────────────────────────────────────────────────── */
@media (max-width: 520px) {
  .tabs button { padding: 7px 12px; font-size: 13px; }
  main { padding: 14px 12px; }
  .header-school { display: none; }
  .batch-controls { flex-direction: column; align-items: flex-start; }
  .modal-body { flex-direction: column; }
  .diag-info { flex: none; display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
}

/* ── Wizard ──────────────────────────────────────────────────────────────── */
.wizard-steps {
  display: flex;
  align-items: center;
  margin-bottom: 24px;
}

.wizard-step {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
}

.step-dot {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: var(--border);
  color: var(--muted);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 14px;
  font-family: 'Zilla Slab', serif;
  transition: background .2s, color .2s;
}

.step-label {
  font-size: 11px;
  color: var(--muted);
  font-weight: 500;
  text-align: center;
  white-space: nowrap;
}

.wizard-step.active .step-dot {
  background: var(--blue);
  color: #fff;
}
.wizard-step.active .step-label {
  color: var(--blue);
  font-weight: 700;
}
.wizard-step.done .step-dot {
  background: var(--green);
  color: #fff;
}
.wizard-step.done .step-label { color: #3a7d0e; }

.step-line {
  flex: 1;
  height: 2px;
  background: var(--border);
  margin: 0 6px 18px;
  transition: background .2s;
}
.step-line.done { background: var(--green); }

.wizard-pane          { display: none; }
.wizard-pane.active   { display: block; }

.wizard-nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 20px;
}

/* ── Step 2 — key selector ───────────────────────────────────────────────── */
.step2-key-options {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.step2-key-card {
  display: flex;
  flex-direction: column;
  gap: 3px;
  padding: 12px 16px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color .15s, background .15s;
}
.step2-key-card:hover    { border-color: var(--blue); background: rgba(30,34,170,.03); }
.step2-key-card.selected { border-color: var(--blue); background: rgba(30,34,170,.07); }

/* ── Step 3 — revisión en vivo ───────────────────────────────────────────── */
.review-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.review-progress-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1;
}
.review-progress-wrap .progress-bar {
  flex: 1;
  height: 10px;
}

/* Card grid */
.review-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(170px, 1fr));
  gap: 10px;
  margin-bottom: 16px;
}

.result-card {
  background: var(--card);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  transition: transform .15s, box-shadow .15s;
}
.result-card:hover { transform: translateY(-2px); box-shadow: var(--shadow); }

/* Skeleton */
.result-card.skeleton {
  background: linear-gradient(90deg, #f0f0eb 25%, #e4e4de 50%, #f0f0eb 75%);
  background-size: 200% 100%;
  animation: skeleton-pulse 1.5s ease infinite;
  border-color: transparent;
  min-height: 100px;
}
@keyframes skeleton-pulse {
  0%   { background-position: 200% 0; }
  100% { background-position: -200% 0; }
}
.result-card.skeleton .rcard-body,
.result-card.skeleton .rcard-num { opacity: 0; }

/* Pop-in */
@keyframes card-appear {
  from { opacity: 0; transform: scale(.94) translateY(6px); }
  to   { opacity: 1; transform: scale(1) translateY(0); }
}
.result-card.rcard-appear { animation: card-appear .22s ease forwards; }

/* Color states */
.result-card.rcard-good  { border-color: var(--green);   background: rgba(120,190,33,.07); }
.result-card.rcard-warn  { border-color: var(--warning);  background: rgba(224,120,0,.07); }
.result-card.rcard-bad   { border-color: var(--danger);   background: rgba(200,33,27,.06); }
.result-card.rcard-error { border-color: var(--danger);   background: rgba(200,33,27,.09); }

/* Card internals */
.rcard-num {
  font-size: 11px;
  color: var(--muted);
  font-weight: 700;
}
.rcard-body {
  display: flex;
  flex-direction: column;
  gap: 4px;
  flex: 1;
}
.rcard-filename {
  font-size: 11px;
  color: var(--muted);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}
.rcard-rut {
  font-family: monospace;
  font-size: 11px;
  color: var(--muted);
}
.rcard-pct {
  font-size: 26px;
  font-weight: 700;
  color: var(--blue);
  line-height: 1.1;
}
.result-card.rcard-good  .rcard-pct { color: #3a7d0e; }
.result-card.rcard-warn  .rcard-pct { color: var(--warning); }
.result-card.rcard-bad   .rcard-pct { color: var(--danger); }
.result-card.rcard-error .rcard-pct { color: var(--danger); }

/* ── Stats divider in Resultados ─────────────────────────────────────────── */
.stats-divider {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 28px 0 20px;
  color: var(--muted);
  font-size: 12px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .7px;
}
.stats-divider::before,
.stats-divider::after {
  content: '';
  flex: 1;
  height: 1.5px;
  background: var(--border);
}

/* ── Misc ────────────────────────────────────────────────────────────────── */
.pad20 { padding: 20px; }

/* ── Answers grid ────────────────────────────────────────────────────────── */
.answers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
  gap: 8px;
  margin-top: 16px;
}

.answer-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  padding: 8px;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  background: var(--card);
  cursor: pointer;
  transition: all .15s;
  font-weight: 600;
  font-size: 14px;
}

.answer-option:hover {
  border-color: var(--blue);
  background: rgba(30,34,170,.04);
}

.answer-option.selected {
  border-color: var(--blue);
  background: var(--blue);
  color: white;
}

.question-number {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 4px;
}

/* ── Processing/Results phases ───────────────────────────────────────────── */
.processing-phase,
.results-phase {
  animation: fade-in .3s ease-out;
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ── Stats summary ────────────────────────────────────────────────────────── */
.stats-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 16px;
  margin-bottom: 24px;
}

.stat-item {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  text-align: center;
}

.stat-value {
  font-size: 24px;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 4px;
}

.stat-label {
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* ── Step 2 — metadatos y grid de respuestas ─────────────────────────────── */
.step2-meta {
  display: flex; gap: 12px; flex-wrap: wrap; margin-bottom: 14px;
}
.step2-meta label {
  display: flex; flex-direction: column; gap: 4px;
  font-size: 13px; color: var(--muted); flex: 1; min-width: 140px;
}
.step2-meta input {
  padding: 7px 10px; border: 1.5px solid var(--border);
  border-radius: var(--radius); font-size: 14px;
  font-family: 'Zilla Slab', serif;
  transition: border-color .15s;
}
.step2-meta input:focus { outline: none; border-color: var(--blue); }
.step2-meta input[readonly] {
  background: var(--bg); color: var(--muted); cursor: default;
}

.step2-ctrl-info { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.ctrl-badge {
  display: inline-block; padding: 2px 8px; border-radius: 6px;
  background: rgba(30,34,170,.10); color: var(--blue);
  font-size: 12px; font-weight: 700;
}

.ans-grid-wrap { overflow-x: auto; }
.ans-cols {
  display: flex; gap: 24px;
}
.ans-col { display: flex; flex-direction: column; gap: 1px; min-width: 220px; }

.ans-col-header {
  display: flex; align-items: center; gap: 3px;
  padding: 4px 2px; border-bottom: 1.5px solid var(--border);
  margin-bottom: 4px;
}
.ans-hdr-ctrl, .ans-hdr-key {
  font-size: 10px; color: var(--muted); font-weight: 700;
  width: 26px; text-align: center; flex-shrink: 0;
}

.ans-row {
  display: flex; align-items: center; gap: 3px;
  padding: 2px 2px; border-radius: 6px;
  transition: background .1s;
}
.ans-row:hover { background: rgba(30,34,170,.04); }
.ans-row.is-ctrl { background: rgba(224,120,0,.08); }
.ans-row.is-ctrl:hover { background: rgba(224,120,0,.14); }

.ans-q {
  font-size: 11px; color: var(--muted); font-weight: 700;
  width: 24px; text-align: right; flex-shrink: 0;
  font-family: monospace;
}

.ans-btn {
  width: 28px; height: 26px; border: 1.5px solid var(--border);
  border-radius: 5px; background: var(--card);
  font-size: 12px; font-weight: 700; font-family: 'Zilla Slab', serif;
  cursor: pointer; transition: border-color .12s, background .12s, color .12s;
  flex-shrink: 0;
}
.ans-btn:hover:not(:disabled) { border-color: var(--blue); color: var(--blue); }
.ans-btn.selected {
  background: var(--blue); border-color: var(--blue); color: #fff;
}
.ans-row.is-ctrl .ans-btn.selected {
  background: var(--warning); border-color: var(--warning);
}
.ans-btn:disabled { opacity: .3; cursor: default; }

/* Toggle switch para pregunta de control */
.ctrl-toggle {
  display: inline-flex; align-items: center; cursor: pointer;
  flex-shrink: 0; width: 26px; height: 14px; position: relative;
}
.ctrl-toggle input { display: none; }
.ctrl-slider {
  position: absolute; inset: 0;
  background: var(--border); border-radius: 7px;
  transition: background .2s;
}
.ctrl-slider::after {
  content: ''; position: absolute;
  left: 2px; top: 2px; width: 10px; height: 10px;
  border-radius: 50%; background: #fff;
  transition: transform .2s;
}
.ctrl-toggle input:checked ~ .ctrl-slider { background: var(--warning); }
.ctrl-toggle input:checked ~ .ctrl-slider::after { transform: translateX(12px); }

/* Keyboard input */
.ans-key-input {
  width: 28px; height: 26px; border: 1.5px solid var(--border);
  border-radius: 5px; font-size: 13px; font-family: monospace;
  font-weight: 700; text-align: center; text-transform: uppercase;
  background: var(--bg); color: var(--blue); cursor: pointer;
  transition: border-color .12s;
}
.ans-key-input:focus { outline: none; border-color: var(--blue); background: #fff; }