/* Reset y variables de diseño */
:root {
  --primary: #4F46E5;
  --primary-hover: #4338CA;
  --primary-light: #EEF2FF;
  --accent: #F59E0B;
  --bg-app: #F8FAFC;
  --surface: #FFFFFF;
  --text-main: #1E293B;
  --text-muted: #64748B;
  --border-color: #E2E8F0;
  --border-grid: #000000;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  
  --font-family: 'Fredoka', 'Outfit', system-ui, -apple-system, sans-serif;
  --font-numbers: 'Outfit', sans-serif;
}

* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-app);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
}

/* ==========================================
   Header App & UI Controls (No Print)
   ========================================== */
.app-header {
  background: var(--surface);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 2rem;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-sm);
}

.header-container {
  max-width: 1400px;
  margin: 0 auto;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.logo .icon {
  font-size: 2rem;
}

.logo h1 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--primary);
  line-height: 1.2;
}

.logo p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* Layout Principal */
.main-layout {
  display: flex;
  max-width: 1400px;
  margin: 1.5rem auto;
  gap: 2rem;
  padding: 0 1.5rem;
}

/* Sidebar */
.sidebar {
  width: 320px;
  flex-shrink: 0;
}

.panel {
  background: var(--surface);
  border-radius: 16px;
  padding: 1.5rem;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-color);
}

.panel h2 {
  font-size: 1.1rem;
  color: var(--text-main);
  margin-bottom: 1.25rem;
}

.divider {
  border: none;
  border-top: 1px solid var(--border-color);
  margin: 1.25rem 0;
}

.form-group {
  margin-bottom: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 0.4rem;
  color: var(--text-main);
}

.form-group input[type="text"],
.form-group select {
  width: 100%;
  padding: 0.6rem 0.8rem;
  border-radius: 8px;
  border: 1px solid var(--border-color);
  font-family: inherit;
  font-size: 0.9rem;
  background: #FAFAFA;
}

.form-group input[type="text"]:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--primary);
  background: #FFF;
  box-shadow: 0 0 0 3px var(--primary-light);
}

.button-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.5rem;
}

/* Botones */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.6rem 1rem;
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 10px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.15s ease;
}

.btn-lg {
  padding: 0.8rem 1.5rem;
  font-size: 1rem;
}

.btn-primary {
  background: var(--primary);
  color: white;
  box-shadow: 0 4px 12px rgba(79, 70, 229, 0.25);
}

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

.btn-secondary {
  width: 100%;
  background: var(--primary-light);
  color: var(--primary);
  border: 1px solid rgba(79, 70, 229, 0.2);
  margin-bottom: 0.5rem;
}

.btn-secondary:hover {
  background: #E0E7FF;
}

.btn-outline {
  background: white;
  border: 1px solid var(--border-color);
  color: var(--text-main);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  background: var(--primary-light);
}

.btn-danger-soft {
  width: 100%;
  background: #FEF2F2;
  color: #EF4444;
  border: 1px solid #FCA5A5;
  margin-top: 0.4rem;
}

.btn-danger-soft:hover {
  background: #FEE2E2;
}

/* Toggle Checkbox */
.checkbox-group .toggle {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
}

.toggle input {
  display: none;
}

.toggle .slider {
  width: 40px;
  height: 22px;
  background-color: #CBD5E1;
  border-radius: 20px;
  position: relative;
  transition: 0.3s;
  flex-shrink: 0;
}

.toggle .slider::before {
  content: "";
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background-color: white;
  top: 3px;
  left: 3px;
  transition: 0.3s;
}

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

.toggle input:checked + .slider::before {
  transform: translateX(18px);
}

.toggle .label-text {
  font-size: 0.85rem;
  font-weight: 500;
  line-height: 1.2;
}

.muted {
  color: var(--text-muted);
}

.tip-box {
  margin-top: 1.5rem;
  background: #FFFBEB;
  border: 1px solid #FDE68A;
  border-radius: 12px;
  padding: 1rem;
  font-size: 0.8rem;
  color: #92400E;
}

.tip-box h4 {
  font-size: 0.85rem;
  margin-bottom: 0.4rem;
}

.tip-box ul {
  padding-left: 1.2rem;
}

.tip-box li {
  margin-bottom: 0.3rem;
}

/* ==========================================
   Contenedor Hoja A4 y Cuadrículas ABN
   ========================================== */
.worksheet-container {
  flex-grow: 1;
  display: flex;
  justify-content: center;
}

/* Simulación visual de hoja A4 en pantalla */
.page-a4 {
  background: white;
  width: 210mm;
  min-height: 297mm;
  padding: 15mm 15mm;
  border-radius: 4px;
  box-shadow: var(--shadow-lg);
  border: 1px solid #CBD5E1;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-sizing: border-box;
  position: relative;
}

/* Cabecera de la ficha */
.worksheet-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-end;
  border-bottom: 2px solid #000;
  padding-bottom: 0.6rem;
  margin-bottom: 1.2rem;
}

.worksheet-header h2 {
  font-family: var(--font-family);
  font-size: 1.6rem;
  font-weight: 700;
  color: #000;
  outline: none;
}

.header-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.3rem;
  font-size: 0.95rem;
  font-weight: 600;
  color: #000;
}

.header-right span {
  outline: none;
}

/* Grilla de 2 columnas de rejillas ABN */
.abn-grid-layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  column-gap: 12mm;
  row-gap: 10mm;
  align-items: start;
}

/* Tarjeta individual de Operación ABN */
.abn-card {
  position: relative;
  background: #FFF;
  border: 2px solid var(--border-grid);
  border-radius: 0px; /* Bordes rectos clásicos escolares */
  box-shadow: none;
}

.abn-card-actions {
  position: absolute;
  top: -12px;
  right: -12px;
  display: flex;
  gap: 4px;
  opacity: 0;
  transition: opacity 0.2s ease;
  z-index: 10;
}

.abn-card:hover .abn-card-actions {
  opacity: 1;
}

.btn-card-action {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  border: none;
  background: #EF4444;
  color: white;
  font-size: 0.8rem;
  font-weight: bold;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
}

.btn-card-action:hover {
  transform: scale(1.1);
}

/* Encabezado con la operación (18+32) */
.abn-op-header {
  background-color: #FAFAFA;
  border-bottom: 2px solid var(--border-grid);
  text-align: center;
  padding: 0.4rem 0.5rem;
}

.op-input {
  font-family: var(--font-numbers);
  font-size: 1.4rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: #000;
  text-align: center;
  width: 100%;
  border: none;
  background: transparent;
  outline: none;
}

/* Encabezado opcional de columnas */
.abn-col-headers {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  border-bottom: 2px solid var(--border-grid);
  background: #F1F5F9;
}

.abn-col-headers div {
  padding: 0.25rem 0.2rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-align: center;
  border-right: 1.5px solid var(--border-grid);
  color: #334155;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.abn-col-headers div:last-child {
  border-right: none;
}

/* Cuerpo de la tabla ABN (3 columnas) */
.abn-table-body {
  display: flex;
  flex-direction: column;
}

.abn-row {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  border-bottom: 1.5px solid var(--border-grid);
  min-height: 11mm; /* Altura ideal para la letra de un niño */
}

.abn-row:last-child {
  border-bottom: none;
}

.abn-cell {
  border-right: 1.5px solid var(--border-grid);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 0.2rem;
  position: relative;
}

.abn-cell:last-child {
  border-right: none;
}

.abn-cell-input {
  width: 100%;
  height: 100%;
  border: none;
  background: transparent;
  font-family: var(--font-numbers);
  font-size: 1.25rem;
  font-weight: 600;
  text-align: center;
  color: #0F172A;
  outline: none;
}

/* Pie de página imprimible */
.worksheet-footer {
  margin-top: 1.5rem;
  padding-top: 0.8rem;
  border-top: 1px dashed #CBD5E1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.9rem;
  color: #475569;
  font-weight: 600;
}

.rating-box .stars {
  margin-left: 0.5rem;
  letter-spacing: 2px;
}

/* ==========================================
   ESTILOS DE IMPRESIÓN DIRECTA (@media print)
   ========================================== */
@media print {
  @page {
    size: A4 portrait;
    margin: 10mm 10mm 10mm 10mm;
  }

  body {
    background: white !important;
    color: black !important;
    padding: 0 !important;
    margin: 0 !important;
  }

  /* Ocultar elementos de UI */
  .no-print,
  .app-header,
  .sidebar,
  .abn-card-actions {
    display: none !important;
  }

  .main-layout {
    display: block !important;
    max-width: 100% !important;
    margin: 0 !important;
    padding: 0 !important;
  }

  .worksheet-container {
    display: block !important;
  }

  .page-a4 {
    width: 100% !important;
    min-height: auto !important;
    padding: 0 !important;
    box-shadow: none !important;
    border: none !important;
    border-radius: 0 !important;
  }

  .worksheet-header {
    border-bottom: 2px solid #000 !important;
    margin-bottom: 8mm !important;
  }

  .abn-grid-layout {
    display: grid !important;
    grid-template-columns: 1fr 1fr !important;
    column-gap: 8mm !important;
    row-gap: 7mm !important;
  }

  .abn-card {
    border: 2px solid #000 !important;
    break-inside: avoid;
    page-break-inside: avoid;
  }

  .abn-op-header {
    background-color: #F8FAFC !important;
    border-bottom: 2px solid #000 !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .op-input {
    font-size: 1.35rem !important;
    font-weight: 700 !important;
    color: #000 !important;
  }

  .abn-col-headers {
    border-bottom: 2px solid #000 !important;
    background-color: #F1F5F9 !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .abn-col-headers div {
    border-right: 1.5px solid #000 !important;
    color: #000 !important;
  }

  .abn-row {
    border-bottom: 1.5px solid #000 !important;
    min-height: 12mm !important; /* Espacio cómodo para escribir con lápiz */
  }

  .abn-cell {
    border-right: 1.5px solid #000 !important;
  }

  .abn-cell-input {
    color: #000 !important;
    font-size: 1.25rem !important;
  }

  .worksheet-footer {
    border-top: 1px dashed #000 !important;
    color: #000 !important;
    margin-top: 8mm !important;
  }
}