/**
 * ELEMENTA - Estilos para Herramientas: Calculadora, Balanceador, Comparador, Quiz y Exportación
 */

/* Tool Common Header */
.tool-header {
  margin-bottom: 20px;
}

.tool-header h3 {
  font-size: 22px;
  font-weight: 800;
  display: flex;
  align-items: center;
  gap: 10px;
}

.tool-desc {
  font-size: 14px;
  color: var(--text-muted);
  margin-top: 6px;
  max-width: 800px;
}

/* Tool Input Group */
.tool-input-group {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  box-shadow: var(--shadow-sm);
  margin-bottom: 24px;
}

.input-with-action {
  display: flex;
  gap: 12px;
}

.molar-input, .balancer-input {
  flex: 1;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 12px 18px;
  border-radius: var(--radius-md);
  font-size: 16px;
  font-family: 'JetBrains Mono', monospace;
  outline: none;
  transition: all var(--transition-fast);
}

.molar-input:focus, .balancer-input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(0, 240, 255, 0.2);
}

.quick-examples {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-top: 14px;
}

.examples-label {
  font-size: 12px;
  color: var(--text-muted);
  font-weight: 600;
}

/* Molar Mass Results */
.molar-results, .balancer-results {
  animation: fadeIn 0.25s ease forwards;
}

.molar-summary-card, .balanced-reaction-card {
  background: linear-gradient(135deg, rgba(0, 240, 255, 0.1) 0%, rgba(59, 130, 246, 0.05) 100%);
  border: 1.5px solid rgba(0, 240, 255, 0.3);
  border-radius: var(--radius-lg);
  padding: 20px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 16px;
}

.molar-stat-label {
  display: block;
  font-size: 13px;
  color: var(--text-muted);
}

.molar-stat-number {
  font-size: 36px;
  font-weight: 900;
  color: var(--accent-cyan);
  font-family: 'JetBrains Mono', monospace;
}

.molar-stat-unit {
  font-size: 18px;
  color: var(--text-secondary);
  margin-left: 6px;
}

.molar-formula-badge {
  font-size: 18px;
  background: var(--bg-surface);
  padding: 8px 16px;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
}

.molar-layout-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

/* Tables */
.molar-table-container, .molar-chart-container, .balancer-verification-box, .molar-steps-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
}

.molar-table-container h4, .molar-chart-container h4, .balancer-verification-box h4, .molar-steps-container h4 {
  font-size: 16px;
  margin-bottom: 14px;
  color: var(--text-primary);
}

.molar-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
}

.molar-table th {
  text-align: left;
  padding: 10px 12px;
  background: var(--bg-surface-elevated);
  color: var(--text-muted);
  font-weight: 600;
  border-bottom: 1px solid var(--border-color);
}

.molar-table td {
  padding: 10px 12px;
  border-bottom: 1px solid var(--border-subtle);
  color: var(--text-secondary);
}

.elem-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 6px;
  font-weight: 800;
  font-size: 13px;
}

.canvas-chart-box {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 10px;
}

/* Step-by-Step Educational Lists */
.step-list {
  padding-left: 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.6;
}

.step-list li {
  margin-bottom: 6px;
}

.step-list ul {
  list-style-type: disc;
  padding-left: 20px;
  margin-top: 6px;
  color: var(--text-muted);
}

.code-box {
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  font-family: monospace;
  margin-top: 6px;
  display: inline-block;
  color: var(--accent-cyan);
}

/* Balanced Chemical Reaction */
.balanced-equation-text {
  font-size: 24px;
  font-weight: 800;
  font-family: 'Inter', sans-serif;
  color: var(--text-primary);
}

.coeff-badge {
  background: var(--accent-cyan);
  color: #000;
  padding: 2px 8px;
  border-radius: 6px;
  font-size: 20px;
  font-weight: 900;
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.4);
}

.react-arrow {
  color: var(--accent-cyan);
  margin: 0 10px;
}

.react-plus {
  color: var(--text-muted);
  margin: 0 6px;
}

.status-balanced {
  color: #10b981;
  font-weight: 700;
}

.status-unstable {
  color: #f59e0b;
  font-weight: 600;
}

/* Comparator Styles */
.comparator-selectors {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  margin-bottom: 16px;
}

.selector-box label {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
  margin-bottom: 6px;
  font-weight: 600;
}

.compare-dropdown {
  width: 100%;
  background: var(--bg-surface-elevated);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
  padding: 9px 12px;
  border-radius: var(--radius-md);
  font-size: 14px;
  outline: none;
}

.comparator-results-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}

.comparator-cards-container {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 16px;
}

.compare-element-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 16px;
}

.card-head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}

.card-head h3 {
  font-size: 16px;
  font-weight: 700;
}

.comparator-radar-container {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 20px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.radar-legend {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  margin-top: 10px;
}

/* Practice Quiz Styles */
.quiz-stats-bar {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 20px;
}

.quiz-stat-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 14px;
  text-align: center;
}

.quiz-stat-card .stat-title {
  display: block;
  font-size: 12px;
  color: var(--text-muted);
}

.quiz-stat-card .stat-num {
  font-size: 26px;
  font-weight: 900;
  color: var(--accent-cyan);
  margin-top: 2px;
}

.quiz-mode-pills {
  display: flex;
  align-items: center;
  gap: 8px;
  overflow-x: auto;
  margin-bottom: 20px;
  padding-bottom: 4px;
}

.mode-pill {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 7px 14px;
  border-radius: var(--radius-full);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.mode-pill.active {
  background: var(--accent-cyan);
  color: #000;
  border-color: var(--accent-cyan);
  box-shadow: 0 2px 10px rgba(0, 240, 255, 0.3);
}

.quiz-card {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: var(--shadow-md);
}

.quiz-badge {
  display: inline-block;
  background: rgba(0, 240, 255, 0.15);
  color: var(--accent-cyan);
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 12px;
  font-weight: 700;
  margin-bottom: 12px;
}

.quiz-question-text {
  font-size: 20px;
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 24px;
  color: var(--text-primary);
}

.quiz-options-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
  margin-bottom: 20px;
}

.quiz-option-btn {
  background: var(--bg-surface-elevated);
  border: 1.5px solid var(--border-color);
  color: var(--text-primary);
  padding: 16px 20px;
  border-radius: var(--radius-md);
  font-size: 15px;
  font-weight: 600;
  text-align: left;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 12px;
  transition: all var(--transition-fast);
}

.quiz-option-btn:hover:not(:disabled) {
  border-color: var(--accent-cyan);
  background: rgba(0, 240, 255, 0.08);
  transform: translateY(-2px);
}

.opt-letter {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  color: var(--text-muted);
  font-size: 13px;
  font-weight: 700;
}

.quiz-option-btn.correct {
  background: rgba(16, 185, 129, 0.2);
  border-color: #10b981;
  color: #6ee7b7;
}

.quiz-option-btn.wrong {
  background: rgba(239, 68, 68, 0.2);
  border-color: #ef4444;
  color: #fca5a5;
}

.quiz-feedback-box {
  padding: 16px;
  border-radius: var(--radius-md);
  font-size: 14px;
  line-height: 1.6;
  margin-bottom: 20px;
}

.feedback-correct {
  background: rgba(16, 185, 129, 0.15);
  border: 1px solid #10b981;
  color: #d1fae5;
}

.feedback-wrong {
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid #ef4444;
  color: #fee2e2;
}

.quiz-footer {
  display: flex;
  justify-content: flex-end;
}

/* 3D Table Controls */
.table3d-controls-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  flex-wrap: wrap;
  gap: 10px;
}

.table3d-btn-group {
  display: flex;
  gap: 8px;
}

.t3d-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  padding: 7px 14px;
  border-radius: var(--radius-sm);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.t3d-btn:hover {
  background: var(--bg-surface-elevated);
  color: var(--text-primary);
}

.t3d-btn.active {
  background: var(--accent-cyan);
  color: #000;
  border-color: var(--accent-cyan);
}

.table3d-hint {
  font-size: 12px;
  color: var(--text-muted);
}

@media (max-width: 900px) {
  .molar-layout-grid, .comparator-results-grid, .quiz-options-grid {
    grid-template-columns: minmax(0, 1fr);
  }
}

/* Celulares: nada se sale de la pantalla */
.comparator-cards-container {
  grid-template-columns: repeat(auto-fit, minmax(min(160px, 100%), 1fr));
}

.compare-element-card,
.molar-table-container,
.balancer-verification-box,
.molar-steps-container {
  min-width: 0;
}

.molar-table-container,
.balancer-verification-box {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

@media (max-width: 640px) {
  .tool-header h3 {
    font-size: 19px;
    line-height: 1.25;
  }

  .tool-desc {
    font-size: 13px;
  }

  .tool-input-group {
    padding: 14px;
  }

  .input-with-action {
    flex-direction: column;
  }

  .input-with-action .btn-primary {
    justify-content: center;
    width: 100%;
  }

  .molar-input,
  .balancer-input {
    font-size: 16px; /* evita el zoom automático de iOS */
    min-width: 0;
  }

  .molar-table-container,
  .molar-chart-container,
  .balancer-verification-box,
  .molar-steps-container {
    padding: 14px;
  }

  .molar-table th,
  .molar-table td {
    padding: 8px 6px;
    font-size: 12px;
  }

  .molar-stat-number {
    font-size: 30px;
  }

  .quiz-mode-pills {
    flex-wrap: wrap;
    overflow-x: visible;
  }

  .table3d-controls-bar {
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
  }

  .table3d-btn-group {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

/* Print Sheet Styling */
@media print {
  .app-header, .controls-bar-section, .modal-overlay, .app-footer, .main-nav, .search-box-wrapper {
    display: none !important;
  }
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }
  .element-cell {
    border: 1px solid #999 !important;
    background: #fff !important;
    page-break-inside: avoid;
  }
}