:root {
  --naranja:       #E85D3A;
  --naranja-claro: #F2A33B;
  --naranja-palido:#FEF3E2;
  --magenta:       #D5306E;
  --violeta:       #6B3FA0;
  --azul:          #2563EB;
  --azul-palido:   #EFF6FF;
  --verde:         #16A34A;
  --verde-palido:  #F0FDF4;
  --error:         #DC2626;
  --negro:         #1A1A2E;
  --gris-texto:    #6B7280;
  --gris:          #F8F8FC;
  --borde:         #E5E7EB;
  --fondo:         #F6F7FB;
  --texto:         #1A1A2E;
}

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

body {
  font-family: 'DM Sans', sans-serif;
  background: var(--fondo);
  color: var(--texto);
  min-height: 100dvh;
  padding-bottom: 40px;
}

/* ── Header ── */
.header {
  background: linear-gradient(135deg, #F2A33B, #E85D3A, #D5306E, #6B3FA0);
  color: white;
  padding: 14px 16px 0;
  position: sticky;
  top: 0;
  z-index: 100;
}
.header-top {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 12px;
}
.btn-volver {
  background: rgba(255,255,255,0.2);
  border: none;
  border-radius: 8px;
  color: white;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.82rem;
  padding: 6px 12px;
  cursor: pointer;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 4px;
}
.btn-volver:hover { background: rgba(255,255,255,0.3); }
.header-title { font-size: 1.05rem; font-weight: 700; }

/* ── Tab nav ── */
.nav-tabs { display: flex; gap: 4px; }
.nav-tab {
  background: rgba(255,255,255,0.15);
  border: none;
  border-radius: 8px 8px 0 0;
  color: rgba(255,255,255,0.75);
  font-family: 'DM Sans', sans-serif;
  font-size: 0.82rem;
  font-weight: 600;
  padding: 7px 16px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.nav-tab.active {
  background: rgba(255,255,255,0.95);
  color: var(--violeta);
}

/* ── Páginas ── */
.page { display: none; padding: 16px; max-width: 560px; margin: 0 auto; }
.page.active { display: block; }

/* ── Cards ── */
.card {
  background: white;
  border-radius: 14px;
  padding: 16px;
  margin-bottom: 14px;
  box-shadow: 0 1px 4px rgba(0,0,0,0.06);
}
.card-title {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--gris-texto);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 12px;
}

/* ── Inputs genéricos ── */
.field-group { margin-bottom: 12px; }
.field-group label {
  font-size: 0.8rem;
  color: var(--gris-texto);
  font-weight: 600;
  display: block;
  margin-bottom: 4px;
}
.field-group select,
.field-group input[type="number"] {
  width: 100%;
  padding: 10px 12px;
  border: 1.5px solid var(--borde);
  border-radius: 8px;
  font-size: 0.95rem;
  font-family: 'DM Sans', sans-serif;
  background: var(--fondo);
  color: var(--texto);
}
.field-group select:focus,
.field-group input:focus { outline: none; border-color: var(--azul); }

/* ── Preview del producto seleccionado ── */
.producto-preview {
  background: var(--azul-palido);
  border-radius: 10px;
  padding: 10px 12px;
  margin-bottom: 12px;
  font-size: 0.82rem;
  display: none;
}
.producto-preview.visible { display: block; }
.preview-precio { color: var(--azul); font-weight: 600; }
.preview-costo  { color: var(--gris-texto); }

/* ── Botón agregar ── */
.btn-agregar {
  width: 100%;
  background: linear-gradient(90deg, var(--naranja-claro), var(--naranja));
  color: white;
  border: none;
  border-radius: 10px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.95rem;
  font-weight: 700;
  padding: 12px;
  cursor: pointer;
  transition: opacity 0.15s;
}
.btn-agregar:hover { opacity: 0.9; }
.btn-agregar:disabled { opacity: 0.35; cursor: default; }

/* ── Carrito ── */
.carrito-vacio {
  text-align: center;
  padding: 20px 0;
  color: var(--gris-texto);
  font-size: 0.88rem;
  opacity: 0.7;
}
.cart-item {
  display: flex;
  align-items: center;
  padding: 10px 0;
  border-bottom: 1px solid var(--borde);
  gap: 8px;
}
.cart-item:last-child { border-bottom: none; }
.cart-item-info { flex: 1; min-width: 0; }
.cart-item-nombre {
  font-weight: 600;
  font-size: 0.88rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.cart-item-meta { font-size: 0.76rem; color: var(--gris-texto); }
.cart-item-subtotal { font-weight: 600; font-size: 0.9rem; color: var(--naranja); white-space: nowrap; }
.btn-quitar {
  background: none;
  border: none;
  color: var(--gris-texto);
  cursor: pointer;
  font-size: 1rem;
  padding: 4px 6px;
  opacity: 0.4;
  flex-shrink: 0;
  line-height: 1;
}
.btn-quitar:hover { opacity: 1; color: var(--error); }

/* ── Resumen de la venta ── */
.totales-box {
  background: var(--gris);
  border-radius: 10px;
  padding: 12px 14px;
  margin-bottom: 12px;
}
.totales-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 3px 0;
  font-size: 0.85rem;
}
.totales-row .label { color: var(--gris-texto); }
.totales-row .valor { font-weight: 600; }

/* ── Campo precio final editable ── */
.precio-final-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  background: white;
  border: 2px solid var(--naranja);
  border-radius: 10px;
  padding: 10px 14px;
  margin-bottom: 10px;
}
.precio-final-label { font-size: 0.82rem; font-weight: 600; color: var(--naranja); flex: 1; }
.precio-final-input-wrap { display: flex; flex-direction: column; align-items: flex-end; gap: 4px; }
.precio-final-wrap input[type="number"] {
  width: 130px;
  border: none;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--texto);
  text-align: right;
  font-family: 'DM Sans', sans-serif;
  background: transparent;
  padding: 0;
}
.precio-final-wrap input[type="number"]:focus { outline: none; }
.descuento-badge {
  background: var(--naranja-palido);
  color: var(--naranja);
  font-size: 0.7rem;
  font-weight: 700;
  border-radius: 20px;
  padding: 2px 8px;
  display: none;
}
.descuento-badge.visible { display: inline-block; }

/* ── Desglose costo/ganancia ── */
.desglose {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}
.desglose-item {
  flex: 1;
  background: var(--gris);
  border-radius: 10px;
  padding: 10px 12px;
  text-align: center;
}
.desglose-item .dval { font-size: 0.92rem; font-weight: 700; }
.desglose-item .dlabel { font-size: 0.7rem; color: var(--gris-texto); margin-top: 3px; }
.desglose-item.verde .dval { color: var(--verde); }
.desglose-item.rojo  .dval { color: var(--error); }
.desglose-item.azul  .dval { color: var(--azul); }

/* ── Botón finalizar ── */
.btn-finalizar {
  width: 100%;
  background: linear-gradient(135deg, #22C55E, #16A34A);
  color: white;
  border: none;
  border-radius: 12px;
  font-family: 'DM Sans', sans-serif;
  font-size: 1rem;
  font-weight: 700;
  padding: 14px;
  cursor: pointer;
  transition: opacity 0.15s;
}
.btn-finalizar:hover { opacity: 0.9; }
.btn-finalizar:disabled { opacity: 0.35; cursor: default; background: var(--gris-texto); }

/* ── Historial ── */
.filtros-periodo {
  display: flex;
  gap: 6px;
  margin-bottom: 14px;
  flex-wrap: wrap;
}
.btn-filtro {
  background: white;
  border: 1.5px solid var(--borde);
  border-radius: 20px;
  font-family: 'DM Sans', sans-serif;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--gris-texto);
  padding: 5px 14px;
  cursor: pointer;
  transition: all 0.15s;
}
.btn-filtro.active {
  background: var(--naranja-palido);
  border-color: var(--naranja);
  color: var(--naranja);
}

/* ── Resumen del período ── */
.resumen-periodo {
  margin-bottom: 14px;
}
.resumen-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}
.resumen-item {
  background: white;
  border-radius: 12px;
  padding: 12px 8px;
  text-align: center;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}
.resumen-item .rval { font-size: 0.88rem; font-weight: 700; }
.resumen-item .rlabel { font-size: 0.66rem; color: var(--gris-texto); margin-top: 3px; text-transform: uppercase; letter-spacing: 0.03em; }
.resumen-item.naranja .rval { color: var(--naranja); }
.resumen-item.verde   .rval { color: var(--verde); }
.resumen-item.azul    .rval { color: var(--azul); }

/* ── Ventas en el historial ── */
.venta-item {
  background: white;
  border-radius: 12px;
  margin-bottom: 8px;
  overflow: hidden;
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
}
.venta-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 12px 14px;
  cursor: pointer;
  user-select: none;
  gap: 8px;
}
.venta-header:hover { background: var(--gris); }
.venta-fecha { font-size: 0.76rem; color: var(--gris-texto); }
.venta-items-hint { font-size: 0.72rem; color: var(--gris-texto); margin-top: 2px; }
.venta-total { font-size: 1rem; font-weight: 700; color: var(--naranja); }
.venta-ganancia-hint { font-size: 0.72rem; color: var(--verde); margin-top: 2px; text-align: right; }
.venta-chevron { font-size: 0.65rem; color: var(--gris-texto); transition: transform 0.2s; display: block; margin-top: 2px; text-align: right; }
.venta-item.expandida .venta-chevron { transform: rotate(180deg); }

.venta-detalle {
  display: none;
  border-top: 1px solid var(--borde);
  padding: 10px 14px 12px;
}
.venta-item.expandida .venta-detalle { display: block; }

.det-item {
  display: flex;
  justify-content: space-between;
  padding: 5px 0;
  border-bottom: 1px dashed var(--borde);
  font-size: 0.82rem;
}
.det-item:last-of-type { border-bottom: none; }
.det-item-nombre { color: var(--texto); }
.det-item-meta { font-size: 0.72rem; color: var(--gris-texto); }

.det-totales {
  margin-top: 10px;
  padding-top: 10px;
  border-top: 1.5px solid var(--borde);
}
.det-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  padding: 2px 0;
  color: var(--gris-texto);
}
.det-row .det-val { font-weight: 600; color: var(--texto); }
.det-row .det-val.verde  { color: var(--verde); }
.det-row .det-val.naranja { color: var(--naranja); }
.det-row .det-val.rojo   { color: var(--error); }

.btn-eliminar-venta {
  background: none;
  border: none;
  color: var(--error);
  font-size: 0.72rem;
  cursor: pointer;
  opacity: 0.5;
  font-family: 'DM Sans', sans-serif;
  margin-top: 10px;
  padding: 0;
}
.btn-eliminar-venta:hover { opacity: 1; }

/* ── Empty states ── */
.empty-state {
  text-align: center;
  padding: 32px 16px;
  color: var(--gris-texto);
}
.empty-icon { font-size: 2.5rem; margin-bottom: 10px; }
.empty-state p { font-size: 0.88rem; opacity: 0.7; line-height: 1.6; }
.empty-state a { color: var(--azul); text-decoration: none; font-weight: 600; }
.empty-state a:hover { text-decoration: underline; }

/* ── Toast ── */
.toast {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--negro);
  color: white;
  padding: 10px 20px;
  border-radius: 30px;
  font-size: 0.85rem;
  font-weight: 500;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s, transform 0.25s;
  z-index: 9000;
  white-space: nowrap;
}
.toast.visible { opacity: 1; transform: translateX(-50%) translateY(0); }

/* ── Info box ── */
.info-box {
  background: var(--azul-palido);
  border-left: 3px solid var(--azul);
  border-radius: 0 8px 8px 0;
  padding: 10px 12px;
  font-size: 0.8rem;
  color: var(--gris-texto);
  margin-bottom: 12px;
  line-height: 1.5;
}