/* ==========================================================================
   Calculadora «Qué nota necesito para aprobar» - Estilos Oficiales
   Fijate Tools • Normativa de Diseño y Estándares Canónicos
   ========================================================================== */

:root {
  --bg-app: #0b0f19;
  --bg-card: #111827;
  --bg-card-alt: #172033;
  --bg-card-subtle: #1f293d;
  --bg-input: #0e1422;
  --border-color: #243049;
  --border-focus: #3b82f6;
  
  --text-main: #f3f4f6;
  --text-muted: #9ca3af;
  --text-dim: #6b7280;
  
  --primary: #3b82f6;
  --primary-hover: #2563eb;
  --primary-glow: rgba(59, 130, 246, 0.25);
  
  --success: #10b981;
  --success-glow: rgba(16, 185, 129, 0.2);
  --warning: #f59e0b;
  --warning-glow: rgba(245, 158, 11, 0.2);
  --danger: #ef4444;
  --danger-glow: rgba(239, 68, 68, 0.2);
  --purple: #8b5cf6;
  
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 20px;
  
  --shadow-card: 0 10px 25px -5px rgba(0, 0, 0, 0.4), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
  --transition-fast: 0.18s ease;
  --transition-normal: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
}

[data-theme="light"] {
  --bg-app: #f4f6fb;
  --bg-card: #ffffff;
  --bg-card-alt: #f8fafc;
  --bg-card-subtle: #edf2f7;
  --bg-input: #ffffff;
  --border-color: #e2e8f0;
  --border-focus: #2563eb;
  
  --text-main: #0f172a;
  --text-muted: #475569;
  --text-dim: #64748b;
  
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-glow: rgba(37, 99, 235, 0.15);
  
  --success: #059669;
  --success-glow: rgba(5, 150, 105, 0.15);
  --warning: #d97706;
  --warning-glow: rgba(217, 119, 6, 0.15);
  --danger: #dc2626;
  --danger-glow: rgba(220, 38, 38, 0.15);
  --purple: #7c3aed;
  
  --shadow-card: 0 8px 20px -4px rgba(0, 0, 0, 0.06), 0 4px 6px -2px rgba(0, 0, 0, 0.04);
}

/* --------------------------------------------------------------------------
   Reset y Tipografía
   -------------------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-app);
  color: var(--text-main);
  line-height: 1.55;
  overflow-x: clip;
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', sans-serif;
  font-weight: 700;
  color: var(--text-main);
  letter-spacing: -0.015em;
}

.verdict-number, .weight-val, .points-secured, .whatif-slider-val, .whatif-final-score, .formula-code, .math-box, .scale-range {
  font-family: 'JetBrains Mono', monospace;
}

/* --------------------------------------------------------------------------
   Layout y Contenedor Principal
   -------------------------------------------------------------------------- */
.main-wrapper.tool-layout {
  max-width: 1200px;
  width: 100%;
  margin: 1.5rem auto 3rem;
  padding: 0 1rem;
  flex: 1;
}

.tool-with-sidebar {
  display: flex;
  gap: 1.5rem;
  align-items: flex-start;
  width: 100%;
}

.tool-main-content {
  flex: 1 1 0%;
  min-width: 0;
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

/* Botón flotante / contador de guardados */
.saved-counter-badge {
  position: absolute;
  top: -4px;
  right: -4px;
  background: var(--primary);
  color: #ffffff;
  font-size: 0.65rem;
  font-weight: 800;
  font-family: 'JetBrains Mono', monospace;
  padding: 2px 5px;
  border-radius: 999px;
  border: 2px solid var(--bg-app);
}

/* --------------------------------------------------------------------------
   Tarjeta Principal de la Calculadora
   -------------------------------------------------------------------------- */
.grade-calc-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .grade-calc-card {
    padding: 2rem;
    gap: 2rem;
  }
}

/* Presets rápidos */
.presets-header {
  background: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.presets-label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.presets-label svg {
  color: var(--primary);
}

.presets-grid {
  display: grid;
  grid-template-columns: repeat(1, minmax(0, 1fr));
  gap: 0.5rem;
}

@media (min-width: 640px) {
  .presets-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .presets-grid {
    grid-template-columns: repeat(4, minmax(0, 1fr));
  }
}

.preset-btn {
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.65rem 0.85rem;
  text-align: left;
  cursor: pointer;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  transition: all var(--transition-fast);
  color: var(--text-main);
  min-height: 48px;
}

.preset-btn span {
  font-size: 0.85rem;
  font-weight: 600;
}

.preset-btn small {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.preset-btn:hover {
  border-color: var(--primary);
  background: var(--bg-card);
  transform: translateY(-1px);
}

.preset-btn.active {
  border-color: var(--primary);
  background: var(--primary-glow);
  box-shadow: 0 0 0 1px var(--primary);
}

/* Fila de nombre y objetivo */
.subject-header-row {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border-color);
}

@media (min-width: 768px) {
  .subject-header-row {
    flex-direction: row;
    align-items: flex-start;
  }
  .flex-subject-name {
    flex: 1.1;
  }
  .flex-target-grade {
    flex: 1.3;
  }
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.form-label {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-main);
}

.input-with-icon {
  position: relative;
  display: flex;
  align-items: center;
}

.input-with-icon svg {
  position: absolute;
  left: 0.85rem;
  color: var(--text-dim);
  pointer-events: none;
}

.form-input {
  width: 100%;
  height: 44px;
  background: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0 0.85rem;
  font-size: 0.92rem;
  color: var(--text-main);
  font-family: inherit;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-with-icon .form-input {
  padding-left: 2.5rem;
}

.form-input:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px var(--primary-glow);
}

/* Target Chips */
.target-chips-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: center;
}

.target-chip {
  background: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  border-radius: var(--radius-md);
  padding: 0.5rem 0.75rem;
  font-size: 0.82rem;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.target-chip:hover {
  border-color: var(--primary);
  color: var(--text-main);
}

.target-chip.active {
  background: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
  box-shadow: 0 2px 8px var(--primary-glow);
}

.target-custom-wrapper {
  position: relative;
  width: 90px;
}

.form-input-custom-target {
  width: 100%;
  height: 40px;
  background: var(--bg-input);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 0 0.5rem;
  text-align: center;
  font-size: 0.85rem;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  color: var(--text-main);
}

.form-input-custom-target:focus {
  outline: none;
  border-color: var(--border-focus);
  border-style: solid;
}

/* --------------------------------------------------------------------------
   Secciones de Bloques de Evaluación Continua
   -------------------------------------------------------------------------- */
.section-card {
  background: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

@media (min-width: 768px) {
  .section-card {
    padding: 1.5rem;
    gap: 1.25rem;
  }
}

.section-card-header {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  justify-content: space-between;
}

@media (min-width: 640px) {
  .section-card-header {
    flex-direction: row;
    align-items: center;
  }
}

.section-card-title-group {
  flex: 1;
}

.section-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-main);
}

.section-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

/* Botones genéricos */
.btn-primary, .btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  font-family: inherit;
  font-weight: 600;
  font-size: 0.88rem;
  border-radius: var(--radius-md);
  padding: 0.65rem 1.15rem;
  cursor: pointer;
  transition: all var(--transition-fast);
  min-height: 42px;
  text-decoration: none;
}

.btn-primary {
  background: var(--primary);
  color: #ffffff;
  border: 1px solid transparent;
  box-shadow: 0 4px 12px var(--primary-glow);
}

.btn-primary:hover {
  background: var(--primary-hover);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--bg-card-subtle);
  color: var(--text-main);
  border: 1px solid var(--border-color);
}

.btn-secondary:hover {
  background: var(--bg-card);
  border-color: var(--text-dim);
}

.btn-sm {
  font-size: 0.8rem;
  padding: 0.45rem 0.85rem;
  min-height: 38px;
}

.btn-danger-hover:hover {
  border-color: var(--danger);
  color: var(--danger);
}

/* Grade Items List */
.grade-items-list {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.grade-item-row {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.85rem;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.65rem;
  align-items: center;
  transition: border-color var(--transition-fast);
}

@media (min-width: 768px) {
  .grade-item-row {
    grid-template-columns: 2.2fr 1.2fr 1.2fr 1.2fr auto;
    padding: 0.75rem 1rem;
    gap: 0.85rem;
  }
}

.grade-item-field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.grade-item-label {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.input-suffix-wrapper {
  display: flex;
  align-items: center;
  position: relative;
  width: 100%;
}

.input-suffix-wrapper .form-input {
  flex: 1 1 0%;
  width: 0;
  min-width: 0;
  padding-right: 2.2rem;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
}

.input-suffix {
  position: absolute;
  right: 0.75rem;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-dim);
  pointer-events: none;
  font-family: 'JetBrains Mono', monospace;
}

.item-points-box {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.item-points-val {
  height: 44px;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  padding: 0 0.75rem;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--success);
  font-family: 'JetBrains Mono', monospace;
}

.btn-remove-item {
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-dim);
  border-radius: var(--radius-md);
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  margin-top: 1.15rem;
}

@media (min-width: 768px) {
  .btn-remove-item {
    margin-top: 0;
  }
}

.btn-remove-item:hover {
  background: var(--danger-glow);
  border-color: var(--danger);
  color: var(--danger);
}

/* Weight summary bar */
.weight-summary-bar {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

@media (min-width: 640px) {
  .weight-summary-bar {
    flex-direction: row;
    justify-content: space-between;
    align-items: center;
  }
}

.weight-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.weight-val {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--text-main);
}

.weight-val.points-secured {
  color: var(--success);
}

/* --------------------------------------------------------------------------
   Configuración de Examen Final y Cláusula
   -------------------------------------------------------------------------- */
.final-exam-config-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 768px) {
  .final-exam-config-grid {
    grid-template-columns: 1fr 1.6fr;
  }
}

.final-config-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-hint {
  font-size: 0.75rem;
  color: var(--text-dim);
}

.cutoff-config-box {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
}

.cutoff-toggle-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Switch Toggle */
.switch-toggle {
  position: relative;
  display: inline-block;
  width: 44px;
  height: 24px;
  flex-shrink: 0;
}

.switch-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}

.slider-toggle {
  position: absolute;
  cursor: pointer;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  transition: .3s;
  border-radius: 24px;
}

.slider-toggle:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: var(--text-muted);
  transition: .3s;
  border-radius: 50%;
}

.switch-toggle input:checked + .slider-toggle {
  background-color: var(--primary);
  border-color: var(--primary);
}

.switch-toggle input:checked + .slider-toggle:before {
  transform: translateX(20px);
  background-color: #ffffff;
}

.switch-label {
  display: flex;
  flex-direction: column;
  cursor: pointer;
}

.switch-label strong {
  font-size: 0.85rem;
  color: var(--text-main);
}

.switch-sub {
  font-size: 0.72rem;
  color: var(--text-muted);
}

.cutoff-input-row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  padding-top: 0.5rem;
  border-top: 1px dashed var(--border-color);
}

.form-label-inline {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
}

.cutoff-wrapper {
  max-width: 110px;
}

.cutoff-badge-tag {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--warning);
  background: var(--warning-glow);
  padding: 0.25rem 0.5rem;
  border-radius: var(--radius-sm);
}

/* --------------------------------------------------------------------------
   Panel de Resultados y Veredicto Inteligente
   -------------------------------------------------------------------------- */
.results-dashboard {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.verdict-hero-card {
  background: linear-gradient(135deg, var(--bg-card-alt) 0%, var(--bg-card-subtle) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  position: relative;
  overflow: hidden;
  transition: all var(--transition-normal);
}

.verdict-badge-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.verdict-status-pill {
  font-size: 0.78rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.3rem 0.75rem;
  border-radius: 999px;
  background: var(--primary-glow);
  color: var(--primary);
  border: 1px solid var(--primary);
}

.verdict-status-pill.status-pass {
  background: var(--success-glow);
  color: var(--success);
  border-color: var(--success);
}

.verdict-status-pill.status-study {
  background: var(--primary-glow);
  color: var(--primary);
  border-color: var(--primary);
}

.verdict-status-pill.status-hard {
  background: var(--warning-glow);
  color: var(--warning);
  border-color: var(--warning);
}

.verdict-status-pill.status-impossible {
  background: var(--danger-glow);
  color: var(--danger);
  border-color: var(--danger);
}

.verdict-status-pill.status-cutoff {
  background: var(--warning-glow);
  color: var(--warning);
  border-color: var(--warning);
}

.verdict-target-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
}

.verdict-main-display {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

@media (min-width: 640px) {
  .verdict-main-display {
    flex-direction: row;
    align-items: center;
    gap: 1.5rem;
  }
}

.verdict-number-box {
  display: flex;
  align-items: baseline;
  gap: 0.35rem;
}

.verdict-number {
  font-size: 3.2rem;
  font-weight: 800;
  line-height: 1;
  color: var(--primary);
  letter-spacing: -0.03em;
}

.verdict-unit {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-dim);
}

.verdict-title {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.2rem;
}

.verdict-explanation {
  font-size: 0.88rem;
  color: var(--text-muted);
}

/* Points Progress Section */
.points-progress-section {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding-top: 0.75rem;
  border-top: 1px solid var(--border-color);
}

.points-progress-labels {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  font-size: 0.78rem;
  color: var(--text-muted);
}

.points-progress-labels strong {
  color: var(--text-main);
  font-family: 'JetBrains Mono', monospace;
}

.points-progress-track {
  position: relative;
  width: 100%;
  height: 14px;
  background: var(--bg-input);
  border-radius: 999px;
  overflow: visible;
  display: flex;
}

.progress-bar-secured {
  height: 100%;
  background: var(--success);
  border-radius: 999px 0 0 999px;
  transition: width 0.3s ease;
}

.progress-bar-needed {
  height: 100%;
  background: var(--primary);
  opacity: 0.8;
  transition: width 0.3s ease;
}

.progress-marker {
  position: absolute;
  top: -4px;
  bottom: -4px;
  width: 2px;
  background: var(--border-color);
  z-index: 2;
}

.progress-marker span {
  position: absolute;
  top: 18px;
  left: 50%;
  transform: translateX(-50%);
  font-size: 0.65rem;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 700;
  color: var(--text-dim);
}

.progress-marker.marker-5 { left: 50%; }
.progress-marker.marker-7 { left: 70%; }
.progress-marker.marker-9 { left: 90%; }

/* Scenarios Table */
.scenarios-card {
  background: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.scenarios-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  font-weight: 700;
}

.scenarios-title svg {
  color: var(--primary);
}

.table-responsive {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.scenarios-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
  font-size: 0.85rem;
}

.scenarios-table th {
  background: var(--bg-card-subtle);
  color: var(--text-muted);
  font-weight: 600;
  padding: 0.65rem 0.85rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--border-color);
}

.scenarios-table td {
  padding: 0.75rem 0.85rem;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-main);
}

.scenarios-table tr:last-child td {
  border-bottom: none;
}

.scenarios-table tr:hover td {
  background: var(--bg-card);
}

.tag-badge {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
}

.tag-badge.tag-pass { background: var(--success-glow); color: var(--success); }
.tag-badge.tag-good { background: var(--primary-glow); color: var(--primary); }
.tag-badge.tag-excel { background: var(--warning-glow); color: var(--warning); }
.tag-badge.tag-honor { background: rgba(139, 92, 246, 0.2); color: var(--purple); }
.tag-badge.tag-fail { background: var(--danger-glow); color: var(--danger); }

/* What-If Simulator */
.whatif-simulator-card {
  background: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.whatif-header {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  justify-content: space-between;
}

@media (min-width: 640px) {
  .whatif-header {
    flex-direction: row;
    align-items: center;
  }
}

.whatif-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  font-weight: 700;
}

.whatif-title svg {
  color: var(--primary);
}

.whatif-desc {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-top: 0.2rem;
}

.whatif-grade-badge {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 0.4rem 0.85rem;
  border-radius: var(--radius-md);
  align-self: flex-start;
}

.whatif-final-score {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--primary);
}

.whatif-final-tag {
  font-size: 0.78rem;
  font-weight: 700;
  color: var(--text-muted);
}

.whatif-slider-container {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.whatif-slider-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--text-muted);
}

.whatif-slider-val {
  color: var(--text-main);
}

.form-range-slider {
  -webkit-appearance: none;
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: var(--bg-input);
  outline: none;
  border: 1px solid var(--border-color);
  cursor: pointer;
}

.form-range-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  box-shadow: 0 0 8px var(--primary-glow);
  border: 2px solid #ffffff;
  transition: transform var(--transition-fast);
}

.form-range-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

.whatif-ticks {
  display: flex;
  justify-content: space-between;
  font-size: 0.68rem;
  color: var(--text-dim);
  font-family: 'JetBrains Mono', monospace;
  padding: 0 2px;
}

.formula-breakdown-box {
  background: var(--bg-card);
  border: 1px dashed var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.formula-title {
  font-size: 0.72rem;
  font-weight: 600;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.formula-code {
  font-size: 0.82rem;
  color: var(--text-muted);
  word-break: break-all;
}

/* Action Buttons Row */
.action-buttons-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  align-items: center;
}

@media (max-width: 640px) {
  .action-buttons-row button {
    width: 100%;
  }
}

/* --------------------------------------------------------------------------
   Guía Educativa y Didáctica
   -------------------------------------------------------------------------- */
.educational-guide-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-card);
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

@media (min-width: 768px) {
  .educational-guide-card {
    padding: 2rem;
    gap: 1.5rem;
  }
}

.guide-main-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-main);
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.85rem;
}

.guide-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 768px) {
  .guide-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.guide-col {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  font-size: 0.88rem;
  color: var(--text-muted);
}

.guide-subhead {
  font-size: 0.98rem;
  font-weight: 700;
  color: var(--text-main);
}

.guide-col ul {
  padding-left: 1.2rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.math-box {
  background: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  font-size: 0.85rem;
  color: var(--primary);
  text-align: center;
  font-weight: 600;
}

.grades-scale-list {
  list-style: none !important;
  padding-left: 0 !important;
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
}

.grades-scale-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-card-alt);
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color);
}

.scale-range {
  font-weight: 700;
  font-size: 0.82rem;
}

.scale-name {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-sm);
}

/* --------------------------------------------------------------------------
   Modales Canónicos Accesibles
   -------------------------------------------------------------------------- */
.fijate-modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(4px);
  z-index: 9999;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1rem;
}

.fijate-modal-backdrop.active {
  display: flex;
  animation: modalFadeIn 0.2s ease-out;
}

@keyframes modalFadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.fijate-modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  animation: modalSlideUp 0.2s ease-out;
}

.modal-alert-size {
  max-width: 400px;
}

@keyframes modalSlideUp {
  from { transform: translateY(15px); }
  to { transform: translateY(0); }
}

.fijate-modal-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.fijate-modal-title-group {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.fijate-modal-title-group svg {
  color: var(--primary);
}

.fijate-modal-title {
  font-size: 1.05rem;
  font-weight: 700;
}

.fijate-modal-close {
  background: transparent;
  border: none;
  font-size: 1.5rem;
  line-height: 1;
  color: var(--text-dim);
  cursor: pointer;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.fijate-modal-close:hover {
  color: var(--text-main);
}

.fijate-modal-body {
  padding: 1.25rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.fijate-modal-footer {
  padding: 1rem 1.25rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  justify-content: flex-end;
  gap: 0.5rem;
}

.saved-modal-desc {
  font-size: 0.82rem;
  color: var(--text-muted);
}

.saved-subjects-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.saved-subject-item {
  background: var(--bg-card-alt);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
  transition: border-color var(--transition-fast);
}

.saved-subject-item:hover {
  border-color: var(--primary);
}

.saved-item-info {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.saved-item-name {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--text-main);
}

.saved-item-meta {
  font-size: 0.75rem;
  color: var(--text-dim);
}

.saved-item-actions {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.btn-icon-sm {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  color: var(--text-main);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-icon-sm:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.btn-icon-sm.btn-delete:hover {
  border-color: var(--danger);
  color: var(--danger);
  background: var(--danger-glow);
}

.saved-empty-state {
  text-align: center;
  padding: 1.5rem;
  color: var(--text-dim);
  font-size: 0.85rem;
}

/* Modal Alert Icon */
.modal-icon-bubble {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}

/* --------------------------------------------------------------------------
   Impresión Optimizada
   -------------------------------------------------------------------------- */
@media print {
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }
  .app-header, .tools-ad-banner-section, .tool-ad-sidebar, .fijate-footer, .action-buttons-row, .presets-header, .btn-remove-item, #btn-add-item {
    display: none !important;
  }
  .main-wrapper.tool-layout {
    margin: 0 !important;
    padding: 0 !important;
    max-width: 100% !important;
  }
  .grade-calc-card, .section-card, .verdict-hero-card, .scenarios-card, .educational-guide-card {
    border: 1px solid #cccccc !important;
    box-shadow: none !important;
    background: #ffffff !important;
    color: #000000 !important;
  }
  .verdict-number, .weight-val, .item-points-val {
    color: #000000 !important;
  }
}