:root {
  --bg-body: #f8fafc;
  --bg-card: #ffffff;
  --border: #e2e8f0;
  --border-focus: #3b82f6;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --danger: #ef4444;
  --danger-hover: #dc2626;
  --danger-bg: #fee2e2;
  --success: #16a34a;
  --success-bg: #dcfce7;
  --warning: #f59e0b;
  --warning-bg: #fef3c7;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
}

/* --- ESTRUCTURA GENERAL --- */
.container {
  max-width: 960px;
  margin: 2rem auto;
  padding: 0 1.25rem;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--text-main);
  box-sizing: border-box;
}

.container h2 {
  font-size: 1.75rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.tool-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-top: 0;
  margin-bottom: 1.5rem;
}

.calculator-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
}

.caja-section h3 {
  font-size: 1.15rem;
  font-weight: 600;
  margin-top: 0;
  margin-bottom: 0.35rem;
}

.section-help {
  color: var(--text-muted);
  font-size: 0.85rem;
  margin-top: 0;
  margin-bottom: 1.25rem;
}

.section-help code {
  background-color: #f1f5f9;
  padding: 0.15rem 0.35rem;
  border-radius: 4px;
  font-size: 0.85rem;
  color: var(--primary);
}

.divider {
  border: 0;
  border-top: 1px solid var(--border);
  margin: 2rem 0;
}

/* --- ENTRADA RÁPIDA DE VENTAS --- */
.quick-entry-bar {
  display: flex;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.quick-entry-bar input,
.quick-entry-bar select {
  padding: 0.65rem 0.85rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  outline: none;
  background-color: #ffffff;
  color: var(--text-main);
}

.quick-entry-bar input[type="number"] {
  flex: 2;
}

.quick-entry-bar select {
  flex: 1.5;
  cursor: pointer;
}

.quick-entry-bar input:focus,
.quick-entry-bar select:focus,
.grid-4-col input:focus,
.grid-3-col input:focus {
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

/* --- BOTONES --- */
.btn-primary {
  background-color: var(--primary);
  color: #ffffff;
  border: none;
  padding: 0.65rem 1.25rem;
  font-size: 0.95rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background-color 0.15s ease;
  white-space: nowrap;
}

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

.btn-text-danger {
  background: transparent;
  border: none;
  color: var(--danger);
  font-size: 0.8rem;
  font-weight: 600;
  cursor: pointer;
  padding: 0.2rem 0.4rem;
  border-radius: 4px;
  transition: background-color 0.15s ease;
}

.btn-text-danger:hover {
  background-color: var(--danger-bg);
}

/* --- RESUMEN DE VENTAS (TARJETAS MÉTRICAS) --- */
.sales-summary-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.25rem;
}

.sales-stat {
  background-color: var(--bg-body);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.85rem 1rem;
  display: flex;
  flex-direction: column;
}

.sales-stat span {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.25rem;
}

.sales-stat strong {
  font-size: 1.15rem;
  color: var(--text-main);
}

.sales-stat.highlight {
  background-color: #eff6ff;
  border-color: #bfdbfe;
}

.sales-stat.highlight span {
  color: #1e40af;
}

.sales-stat.highlight strong {
  color: var(--primary);
}

/* --- HISTORIAL Y BADGES DE TICKETS --- */
.sales-log-container {
  background-color: #fafbfc;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 0.85rem;
}

.sales-log-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.65rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.sales-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  max-height: 140px;
  overflow-y: auto;
  padding: 0.2rem;
}

.ticket-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.65rem;
  border-radius: 20px;
  font-size: 0.85rem;
  font-weight: 500;
  border: 1px solid transparent;
}

.ticket-badge.efectivo {
  background-color: var(--success-bg);
  border-color: #bbf7d0;
  color: #14532d;
}

.ticket-badge.digital {
  background-color: #dbeafe;
  border-color: #bfdbfe;
  color: #1e40af;
}

.ticket-badge button {
  background: none;
  border: none;
  cursor: pointer;
  font-size: 1rem;
  line-height: 1;
  padding: 0;
  color: inherit;
  opacity: 0.6;
}

.ticket-badge button:hover {
  opacity: 1;
}

/* --- FORMULARIOS EN CUADRÍCULA (SECCIONES 2 Y 3) --- */
.grid-4-col {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1rem;
}

.grid-3-col {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
}

.grid-4-col label,
.grid-3-col label {
  display: block;
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  margin-bottom: 0.4rem;
}

.grid-4-col input,
.grid-3-col input {
  width: 100%;
  box-sizing: border-box;
  padding: 0.65rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  outline: none;
  background-color: #ffffff;
}

/* --- PANELES DE CIERRE Y CONCILIACIÓN --- */
.caja-results-panel {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
  margin-top: 2rem;
}

.cierre-card {
  background-color: #ffffff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.cierre-card h4 {
  font-size: 1.05rem;
  margin-top: 0;
  margin-bottom: 0.85rem;
}

.cierre-calc {
  font-size: 0.87rem;
  color: var(--text-muted);
  margin: 0.35rem 0;
  display: flex;
  justify-content: space-between;
}

.cierre-calc span {
  font-weight: 600;
  color: var(--text-main);
}

/* --- PASTILLAS DE ESTADO (BADGES) --- */
.status-pill {
  display: inline-block;
  text-align: center;
  padding: 0.45rem 0.75rem;
  border-radius: 6px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-top: 1rem;
}

.status-neutral {
  background-color: #f1f5f9;
  color: var(--text-muted);
}

.status-exacto {
  background-color: var(--success-bg);
  color: var(--success);
  border: 1px solid #bbf7d0;
}

.status-sobra {
  background-color: var(--warning-bg);
  color: #b45309;
  border: 1px solid #fde68a;
}

.status-falta {
  background-color: var(--danger-bg);
  color: var(--danger);
  border: 1px solid #fecaca;
}

/* --- RESUMEN FINAL INFERIOR --- */
/* --- RESUMEN FINAL INFERIOR --- */
.final-summary-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

.summary-box {
  background-color: var(--bg-body);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.15rem;
  display: flex;
  flex-direction: column;
  text-align: center;
  align-items: center;
}

.summary-box span {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.summary-box strong {
  font-size: 1.35rem;
  color: var(--text-main);
}

.text-danger {
  color: var(--danger) !important;
}

/* Ganancia Neta: Ocupa ambas columnas y queda centrada debajo */
.summary-box.highlight-profit {
  grid-column: 1 / -1;
  max-width: 480px;
  width: 100%;
  margin: 0 auto;
  box-sizing: border-box;
  background-color: #0f172a;
  border-color: #0f172a;
  padding: 1.35rem;
  box-shadow: var(--shadow-md);
}

.summary-box.highlight-profit span {
  color: #94a3b8;
  font-size: 0.9rem;
}

.summary-box.highlight-profit strong {
  color: #38bdf8;
  font-size: 1.7rem;
}

/* Ajuste para pantallas pequeñas */
@media (max-width: 680px) {
  .final-summary-grid {
    grid-template-columns: 1fr;
  }
  
  .summary-box.highlight-profit {
    max-width: 100%;
  }
}

/* --- RESPONSIVIDAD (MÓVILES Y PANTALLAS CHICAS) --- */
@media (max-width: 860px) {
  .grid-4-col {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 680px) {
  .calculator-card {
    padding: 1.25rem;
  }

  .quick-entry-bar {
    flex-direction: column;
  }

  .sales-summary-grid,
  .grid-4-col,
  .grid-3-col,
  .caja-results-panel,
  .final-summary-grid {
    grid-template-columns: 1fr;
  }
}