/* ============================================
   Generador de Rúbricas — EduTools
   Prefix: rb-  (rubrics)
   ============================================ */

/* ─── Layout ──────────────────────────────── */
.rb-root {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* ─── Sections ────────────────────────────── */
.rb-section {
  background: var(--color-surface);
  border: 1px solid var(--color-border-soft);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--transition);
}

.rb-section:hover {
  box-shadow: var(--shadow-md);
}

.rb-section__header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.rb-section__icon {
  width: 40px;
  height: 40px;
  border-radius: 0.75rem;
  display: grid;
  place-items: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.rb-section__icon--blue {
  background: linear-gradient(135deg, #dbeafe, #eff6ff);
  color: #2563eb;
}

.rb-section__icon--green {
  background: linear-gradient(135deg, #d1fae5, #ecfdf5);
  color: #059669;
}

.rb-section__icon--purple {
  background: linear-gradient(135deg, #ede9fe, #f5f3ff);
  color: #7c3aed;
}

.rb-section__icon--amber {
  background: linear-gradient(135deg, #fef3c7, #fffbeb);
  color: #d97706;
}

.rb-section__icon--rose {
  background: linear-gradient(135deg, #ffe4e6, #fff1f2);
  color: #e11d48;
}

.rb-section__title {
  font-size: 1.125rem;
  font-weight: 800;
  font-family: var(--font-heading);
  color: var(--color-ink);
}

.rb-section__subtitle {
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-top: 2px;
}

/* ─── Rubric Table ────────────────────────── */
.rb-table-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
  background: var(--color-surface);
}

.rb-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 600px;
  font-size: 0.875rem;
}

.rb-table th,
.rb-table td {
  border: 1px solid var(--color-border-soft);
  padding: 0.5rem 0.625rem;
  text-align: left;
  vertical-align: top;
}

.rb-table th {
  background: linear-gradient(180deg, var(--color-surface-2), var(--color-border-soft));
  font-weight: 700;
  font-family: var(--font-heading);
  color: var(--color-ink);
  position: sticky;
  top: 0;
  z-index: 2;
}

.rb-table th:first-child {
  min-width: 160px;
  width: 160px;
  background: linear-gradient(135deg, #1e3a8a, #2563eb);
  color: #fff;
  border-color: #1e3a8a;
}

.rb-th-level {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.rb-th-level-name {
  display: flex;
  align-items: center;
  gap: 4px;
}

.rb-th-level-name textarea,
.rb-indicator-name textarea,
.rb-indicator-cell textarea {
  width: 100%;
  border: 1px solid transparent;
  border-radius: 4px;
  padding: 4px 6px;
  font-family: inherit;
  font-size: 0.8125rem;
  line-height: 1.35;
  resize: none;
  overflow: hidden;
  background: transparent;
  color: var(--color-ink);
  transition: border-color var(--transition), background var(--transition);
}

.rb-th-level-name textarea {
  font-weight: 700;
  text-align: center;
}

.rb-indicator-name textarea {
  font-weight: 700;
}

.rb-th-level-name textarea:focus,
.rb-indicator-name textarea:focus,
.rb-indicator-cell textarea:focus {
  border-color: var(--color-primary);
  outline: none;
  background: #fff;
  box-shadow: 0 2px 6px rgba(33, 80, 201, 0.08);
}

.rb-indicator-cell textarea::placeholder {
  color: #cbd5e1;
}

.rb-th-level-pts {
  display: flex;
  align-items: center;
  gap: 3px;
}

.rb-th-level-pts input {
  width: 42px;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  padding: 2px 4px;
  font-size: 0.75rem;
  text-align: center;
  background: #fff;
}

.rb-th-level-pts input:focus {
  border-color: var(--color-primary);
  outline: none;
}

.rb-th-level-pts span {
  font-size: 0.7rem;
  color: var(--color-muted);
}

.rb-th-remove {
  background: none;
  border: none;
  color: #94a3b8;
  cursor: pointer;
  font-size: 1rem;
  padding: 0;
  line-height: 1;
  transition: color var(--transition);
}

.rb-th-remove:hover {
  color: #ef4444;
}

.rb-indicator-name {
  font-weight: 700;
  color: var(--color-ink);
  font-size: 0.8125rem;
}

.rb-indicator-cell {
  position: relative;
}

.rb-row-actions {
  display: flex;
  align-items: center;
  gap: 4px;
  margin-top: 6px;
}

.rb-row-remove {
  background: none;
  border: none;
  color: #94a3b8;
  cursor: pointer;
  font-size: 0.875rem;
  padding: 2px;
  border-radius: 4px;
  transition: color var(--transition), background var(--transition);
}

.rb-row-remove:hover {
  color: #ef4444;
  background: #fef2f2;
}

/* ─── Action buttons row ──────────────────── */
.rb-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1rem;
}

.rb-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.5rem 1rem;
  font-size: 0.8125rem;
  font-weight: 700;
  border: 1px solid var(--color-border);
  border-radius: 0.5rem;
  background: var(--color-surface);
  color: var(--color-text);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
}

.rb-btn:hover {
  border-color: var(--color-primary);
  color: var(--color-primary);
  box-shadow: 0 2px 8px rgb(33 80 201 / 0.12);
}

.rb-btn--primary {
  background: linear-gradient(135deg, #2563eb, #1e40af);
  color: #fff;
  border-color: transparent;
}

.rb-btn--primary:hover {
  background: linear-gradient(135deg, #1d4ed8, #1e3a8a);
  color: #fff;
  box-shadow: 0 4px 12px rgb(37 99 235 / 0.35);
}

.rb-btn--success {
  background: linear-gradient(135deg, #059669, #047857);
  color: #fff;
  border-color: transparent;
}

.rb-btn--success:hover {
  box-shadow: 0 4px 12px rgb(5 150 105 / 0.35);
}

.rb-btn--danger {
  color: #dc2626;
  border-color: #fecaca;
}

.rb-btn--danger:hover {
  background: #fef2f2;
  border-color: #dc2626;
}

.rb-btn--sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.75rem;
}

/* ─── Students Section ────────────────────── */
.rb-students-input-area {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.rb-paste-area {
  width: 100%;
  min-height: 100px;
  border: 2px dashed var(--color-border);
  border-radius: 0.75rem;
  padding: 0.75rem;
  font-size: 0.875rem;
  font-family: var(--font-body);
  resize: vertical;
  transition: border-color var(--transition);
  background: #fafbff;
}

.rb-paste-area:focus {
  border-color: var(--color-primary);
  outline: none;
  background: #fff;
}

.rb-students-list {
  display: flex;
  flex-direction: column;
  gap: 0.375rem;
  margin-top: 0.5rem;
}

.rb-student-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: var(--color-surface-2);
  border: 1px solid var(--color-border-soft);
  border-radius: 0.5rem;
  font-size: 0.875rem;
  transition: background var(--transition);
}

.rb-student-item:hover {
  background: #eef2ff;
}

.rb-student-num {
  font-size: 0.7rem;
  font-weight: 800;
  color: var(--color-primary);
  background: #dbeafe;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  flex-shrink: 0;
}

.rb-student-name {
  flex: 1;
  font-weight: 600;
  color: var(--color-ink);
}

.rb-student-remove {
  background: none;
  border: none;
  color: #94a3b8;
  cursor: pointer;
  font-size: 1rem;
  padding: 2px 4px;
  border-radius: 4px;
  transition: color var(--transition);
}

.rb-student-remove:hover {
  color: #ef4444;
}

.rb-student-count {
  font-size: 0.8rem;
  color: var(--color-muted);
  font-weight: 600;
  padding: 0.25rem 0;
}

/* ─── Export Section ──────────────────────── */
.rb-export-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 0.75rem;
}

.rb-export-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 1.25rem 1rem;
  border: 1px solid var(--color-border-soft);
  border-radius: 0.75rem;
  background: #fafbff;
  cursor: pointer;
  transition: all var(--transition);
  text-align: center;
}

.rb-export-card:hover {
  border-color: var(--color-primary);
  box-shadow: 0 4px 16px rgb(33 80 201 / 0.12);
  transform: translateY(-2px);
}

.rb-export-card__icon {
  font-size: 2rem;
}

.rb-export-card__title {
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--color-ink);
}

.rb-export-card__desc {
  font-size: 0.7rem;
  color: var(--color-muted);
}

/* ─── Grading Section ─────────────────────── */
.rb-grading-nav {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.rb-grading-student-name {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-ink);
  font-family: var(--font-heading);
}

.rb-grading-counter {
  font-size: 0.8rem;
  color: var(--color-muted);
  font-weight: 600;
  background: var(--color-border-soft);
  padding: 4px 10px;
  border-radius: 999px;
}

.rb-grading-table-wrap {
  overflow-x: auto;
  border: 2px solid var(--color-border);
  border-radius: 0.75rem;
}

.rb-grading-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 500px;
}

.rb-grading-table th,
.rb-grading-table td {
  border: 1px solid var(--color-border-soft);
  padding: 0.625rem 0.75rem;
  text-align: center;
  font-size: 0.8125rem;
}

.rb-grading-table th {
  background: linear-gradient(180deg, var(--color-surface-2), var(--color-border-soft));
  font-weight: 700;
  font-family: var(--font-heading);
  color: var(--color-ink);
}

.rb-grading-table th:first-child {
  text-align: left;
  min-width: 140px;
  background: linear-gradient(135deg, #1e3a8a, #2563eb);
  color: #fff;
}

.rb-grading-table td:first-child {
  text-align: left;
  font-weight: 700;
  color: var(--color-ink);
  font-size: 0.8rem;
}

.rb-grade-cell {
  cursor: pointer;
  transition: all 0.15s ease;
  position: relative;
  user-select: none;
}

.rb-grade-cell:hover {
  background: #eef2ff;
}

.rb-grade-cell:focus-within {
  outline: 3px solid rgb(37 99 235 / 0.4);
  outline-offset: -2px;
}

.rb-grade-cell.rb-grade-cell--selected {
  background: linear-gradient(135deg, #dbeafe, #eff6ff);
  box-shadow: inset 0 0 0 2px #2563eb;
}

.rb-grade-cell.rb-grade-cell--active {
  background: #2563eb;
  color: #fff;
  font-weight: 800;
}

.rb-grade-cell--focused {
  outline: 3px solid #f97316 !important;
  outline-offset: -1px;
}

.rb-grading-shortcut-hint {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 0.75rem;
  padding: 0.5rem 0.75rem;
  background: #fffbeb;
  border: 1px solid #fde68a;
  border-radius: 0.5rem;
  font-size: 0.75rem;
  color: #92400e;
}

.rb-grading-shortcut-hint kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 22px;
  height: 20px;
  padding: 0 5px;
  background: #fff;
  border: 1px solid #d6d3d1;
  border-radius: 4px;
  font-size: 0.65rem;
  font-weight: 700;
  color: #44403c;
  box-shadow: 0 1px 0 #d6d3d1;
}

/* ─── Results / Charts ────────────────────── */
.rb-results-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.rb-stat-card {
  background: var(--color-surface-2);
  border: 1px solid var(--color-border-soft);
  border-radius: 0.75rem;
  padding: 1rem;
  text-align: center;
}

.rb-stat-card__value {
  font-size: 1.5rem;
  font-weight: 800;
  font-family: var(--font-heading);
  color: var(--color-primary);
}

.rb-stat-card__label {
  font-size: 0.75rem;
  color: var(--color-muted);
  font-weight: 600;
  margin-top: 2px;
}

.rb-stat-card--green .rb-stat-card__value { color: #059669; }
.rb-stat-card--red .rb-stat-card__value { color: #dc2626; }
.rb-stat-card--amber .rb-stat-card__value { color: #d97706; }

.rb-chart-container {
  background: var(--color-surface);
  border: 1px solid var(--color-border-soft);
  border-radius: 0.75rem;
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.rb-chart-title {
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-ink);
  margin-bottom: 0.75rem;
}

.rb-bar-chart {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.rb-bar-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.rb-bar-label {
  width: 100px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-ink);
  text-align: right;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex-shrink: 0;
}

.rb-bar-track {
  flex: 1;
  height: 22px;
  background: var(--color-border-soft);
  border-radius: 999px;
  overflow: hidden;
  position: relative;
}

.rb-bar-fill {
  height: 100%;
  border-radius: 999px;
  transition: width 0.6s cubic-bezier(0.22, 1, 0.36, 1);
  min-width: 2px;
}

.rb-bar-fill--blue { background: linear-gradient(90deg, #3b82f6, #2563eb); }
.rb-bar-fill--green { background: linear-gradient(90deg, #10b981, #059669); }
.rb-bar-fill--amber { background: linear-gradient(90deg, #f59e0b, #d97706); }
.rb-bar-fill--red { background: linear-gradient(90deg, #f87171, #ef4444); }
.rb-bar-fill--purple { background: linear-gradient(90deg, #a78bfa, #7c3aed); }

.rb-bar-value {
  font-size: 0.7rem;
  font-weight: 700;
  color: var(--color-muted);
  width: 36px;
  text-align: right;
  flex-shrink: 0;
}

/* ─── Results Table ───────────────────────── */
.rb-results-table-wrap {
  overflow-x: auto;
  border: 1px solid var(--color-border);
  border-radius: 0.75rem;
}

.rb-results-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.8rem;
}

.rb-results-table th,
.rb-results-table td {
  border: 1px solid var(--color-border-soft);
  padding: 0.5rem 0.625rem;
  text-align: center;
}

.rb-results-table th {
  background: linear-gradient(180deg, var(--color-surface-2), var(--color-border-soft));
  font-weight: 700;
  color: var(--color-ink);
  font-size: 0.75rem;
}

.rb-results-table td:first-child {
  text-align: left;
  font-weight: 600;
}

.rb-results-table tr:nth-child(even) {
  background: #fafbff;
}

/* ─── Tabs ────────────────────────────────── */
.rb-tabs {
  display: flex;
  gap: 4px;
  background: var(--color-border-soft);
  border-radius: 0.75rem;
  padding: 4px;
  margin-bottom: 1.25rem;
  overflow-x: auto;
}

.rb-tab {
  flex: 1;
  min-width: 0;
  padding: 0.625rem 1rem;
  font-size: 0.8125rem;
  font-weight: 700;
  border: none;
  border-radius: 0.625rem;
  background: transparent;
  color: var(--color-muted);
  cursor: pointer;
  transition: all var(--transition);
  white-space: nowrap;
  text-align: center;
}

.rb-tab:hover {
  color: var(--color-ink);
  background: rgba(255, 255, 255, 0.5);
}

.rb-tab--active {
  background: #fff;
  color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.rb-tab-panel {
  display: none;
}

.rb-tab-panel--active {
  display: block;
  animation: rbFadeIn 0.3s ease;
}

@keyframes rbFadeIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ─── Session actions ─────────────────────── */
.rb-session-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  padding-top: 1rem;
  border-top: 1px solid var(--color-border-soft);
  margin-top: 1rem;
}

/* ─── Empty state ─────────────────────────── */
.rb-empty {
  display: grid;
  place-items: center;
  min-height: 120px;
  padding: 2rem;
  text-align: center;
  color: var(--color-muted);
  font-size: 0.875rem;
}

.rb-empty__icon {
  font-size: 2.5rem;
  margin-bottom: 0.5rem;
  opacity: 0.5;
}

/* ─── Hidden ──────────────────────────────── */
.rb-hidden {
  display: none !important;
}

/* ─── Notifications ───────────────────────── */
.rb-toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(100px);
  background: #1e293b;
  color: #fff;
  padding: 0.75rem 1.5rem;
  border-radius: 0.75rem;
  font-size: 0.875rem;
  font-weight: 600;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  z-index: 9999;
  opacity: 0;
  transition: all 0.35s cubic-bezier(0.22, 1, 0.36, 1);
  pointer-events: none;
}

.rb-toast--visible {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ─── Print styles ────────────────────────── */
@media print {
  .rb-section,
  .rb-root {
    break-inside: avoid;
  }

  .rb-actions,
  .rb-session-actions,
  .rb-grading-nav .rb-btn,
  .rb-grading-shortcut-hint,
  .rb-students-input-area,
  .rb-export-grid,
  .rb-tabs,
  .rb-row-remove,
  .rb-th-remove,
  [data-print-hide] {
    display: none !important;
  }

  .rb-section {
    box-shadow: none;
    border: 1px solid #ccc;
    page-break-inside: avoid;
  }

  .rb-table th,
  .rb-table td,
  .rb-grading-table th,
  .rb-grading-table td {
    border: 1px solid #999 !important;
  }

  .rb-print-page {
    page-break-before: always;
  }

  .rb-print-page:first-child {
    page-break-before: avoid;
  }

  .rb-grade-cell--active {
    background: #dbeafe !important;
    color: #1e3a8a !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }
}

/* ─── Responsive ──────────────────────────── */
@media (max-width: 767px) {
  .rb-section {
    padding: 1rem;
    border-radius: 0.75rem;
  }

  .rb-actions {
    flex-direction: column;
  }

  .rb-btn {
    justify-content: center;
    width: 100%;
  }

  .rb-export-grid {
    grid-template-columns: 1fr;
  }

  .rb-grading-nav {
    flex-direction: column;
    align-items: flex-start;
  }

  .rb-tabs {
    border-radius: 0.5rem;
  }

  .rb-tab {
    font-size: 0.75rem;
    padding: 0.5rem 0.625rem;
  }

  .rb-results-summary {
    grid-template-columns: repeat(2, 1fr);
  }

  .rb-bar-label {
    width: 70px;
    font-size: 0.65rem;
  }
}


/* EduTools visual refresh: shared tool polish */
:root {
  --sl-primary: var(--color-primary);
  --sl-primary-hover: var(--color-primary-dark);
  --sl-accent: var(--color-accent);
  --sl-accent-hover: var(--color-accent-dark);
  --sl-border: var(--color-border);
  --gc2-blue: var(--color-primary);
  --gc2-blue-lt: var(--color-primary-soft);
  --die-bg: var(--color-primary);
  --arena-bg: var(--color-primary-soft);
  --stat-bar-color: var(--color-primary);
}

.tool-stage {
  border-color: rgb(219 226 220 / 0.96);
  background: rgb(255 255 255 / 0.94);
  box-shadow: 0 18px 45px rgb(23 58 70 / 0.08);
}

.tool-stage :is(.sl-step, .gc2-panel, .grade-panel, .team-card, .rb-panel, .rb-card, .rb-section, .md-card, .md-panel, .vote-card, .clock-panel, .roulette-panel, .noise-card, .stats-section, .dice-arena) {
  border-color: rgb(219 226 220 / 0.96);
  border-radius: var(--radius-xl);
  box-shadow: 0 16px 36px rgb(23 58 70 / 0.08);
}

.tool-stage :is(input, textarea, select, .sl-qty-input, .gc2-meta-input, .gc2-setting select, .gc2-setting input[type="number"]) {
  border-color: rgb(202 213 205 / 0.95);
  background-color: #ffffff;
}

.tool-stage :is(input, textarea, select, .sl-qty-input, .gc2-meta-input):focus {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 4px rgb(23 107 135 / 0.12);
}

.btn--ai,
.gc2-btn--primary,
.btn-giant,
.rb-btn--primary,
.md-primary-action,
.vote-primary,
.clock-primary {
  border-color: var(--color-primary);
  color: #ffffff;
  background: var(--color-primary);
  box-shadow: 0 14px 24px rgb(23 107 135 / 0.18);
}

.btn--ai:hover,
.gc2-btn--primary:hover,
.btn-giant:hover,
.rb-btn--primary:hover,
.md-primary-action:hover,
.vote-primary:hover,
.clock-primary:hover {
  background: var(--color-primary-dark);
}

.sl-step::before {
  background: linear-gradient(90deg, var(--color-primary), #1b7f67, var(--color-accent));
}

.sl-preset.active,
.btn-toggle.active,
.grade-meter span {
  background: var(--color-primary);
}

.sl-qty-btn:hover,
.sl-preset:hover {
  border-color: rgb(23 107 135 / 0.34);
  color: var(--color-primary-dark);
  background: var(--color-primary-soft);
  box-shadow: 0 10px 20px rgb(23 107 135 / 0.12);
}

.rb-section__icon,
.rb-export-card__icon,
.edu-warning-icon,
.face {
  display: inline-grid;
  place-items: center;
  color: var(--color-primary-dark);
}

.edu-warning-icon {
  width: 3.75rem;
  height: 3.75rem;
  margin-bottom: 12px;
  border-radius: var(--radius-md);
  background: var(--color-primary-soft);
}

.rb-section__icon,
.rb-export-card__icon {
  border-radius: var(--radius-md);
  background: var(--color-primary-soft);
}

.material-symbols-outlined {
  vertical-align: middle;
}