:root {
  --bg: #fff7f8;
  --panel: #ffffff;
  --text: #191414;
  --muted: #8a7f80;
  --accent: #ffb7c5;
  --accent-dark: #ff8fa3;
  --accent-text: #191414;
  --danger: #dc2626;
  --success: #16a34a;
  --border: #f3dce1;
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: "Montserrat", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.screen {
  min-height: 100vh;
}

/* Login */
#login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(160deg, #ffd6e0 0%, #fff7f8 45%);
}

/* La regla anterior gana por especificidad de ID sobre [hidden] del navegador;
   esta la vuelve a ganar de vuelta cuando el atributo esta presente. */
#login-screen[hidden] {
  display: none;
}

.login-card {
  background: var(--panel);
  padding: 2.5rem;
  border-radius: 20px;
  box-shadow: 0 12px 32px rgba(255, 143, 163, 0.25);
  width: 300px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.brand-logo {
  width: 88px;
  height: 88px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.12);
  margin-bottom: 0.5rem;
}

.login-card .subtitle {
  margin: 0 0 1rem;
  color: var(--muted);
  font-weight: 500;
  letter-spacing: 0.03em;
}

.login-card label {
  align-self: flex-start;
  font-weight: 600;
  font-size: 0.85rem;
}

.login-card input {
  width: 100%;
  font-size: 1.5rem;
  padding: 0.6rem;
  text-align: center;
  letter-spacing: 0.3rem;
  border: 1px solid var(--border);
  border-radius: 10px;
  margin-bottom: 0.75rem;
  font-family: inherit;
}

.login-card button {
  width: 100%;
}

button {
  cursor: pointer;
  border: none;
  border-radius: 10px;
  padding: 0.7rem 1rem;
  font-size: 1rem;
  background: var(--accent);
  color: var(--accent-text);
  font-weight: 700;
  font-family: inherit;
  transition: background-color 0.15s ease, transform 0.05s ease;
}

button:hover {
  background: var(--accent-dark);
}

button:active {
  transform: scale(0.98);
}

button:disabled {
  background: #e8e2e3;
  color: #a89fa1;
  cursor: not-allowed;
}

button.secondary {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
}

button.secondary:hover {
  background: var(--border);
}

/* Top bar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.5rem;
  background: var(--panel);
  border-bottom: 1px solid var(--border);
  border-top: 4px solid var(--accent);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.brand-logo-small {
  width: 36px;
  height: 36px;
  margin-bottom: 0;
}

.topbar h1 {
  font-size: 1.15rem;
  margin: 0;
  font-weight: 800;
  letter-spacing: 0.01em;
}

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

.sync-status {
  color: var(--muted);
  font-size: 0.85rem;
}

/* Selector de modo Tienda / Feria */
.mode-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.6rem 1.5rem;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--border);
  transition: background-color 0.15s ease;
}

.mode-bar label {
  font-weight: 700;
}

.mode-bar select {
  padding: 0.4rem 0.6rem;
  border-radius: 8px;
  border: 1px solid var(--border);
  font-family: inherit;
  font-weight: 700;
  font-size: 0.9rem;
}

.mode-description {
  color: var(--muted);
  flex: 1;
}

.mode-bar-tienda {
  background: var(--panel);
}

.mode-bar-feria {
  background: #fff3cd;
  border-bottom-color: #ffe08a;
}

.mode-bar-feria select {
  border-color: #d4a017;
  background: #fffbea;
}

.mode-bar-feria .mode-description {
  color: #8a6d00;
  font-weight: 600;
}

/* Main layout */
.pos-main {
  display: grid;
  grid-template-columns: 380px 1fr;
  gap: 1.5rem;
  padding: 1.5rem;
  align-items: start;
}

.scan-panel,
.cart-panel {
  background: var(--panel);
  border-radius: 16px;
  padding: 1.25rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  border: 1px solid var(--border);
}

.pos-mercadolibre-section {
  background: var(--panel);
  border-radius: 16px;
  padding: 1.25rem;
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.06);
  border: 1px solid var(--border);
  margin: 0 1.5rem 1.5rem;
}

.pos-mercadolibre-section h3 {
  margin: 0 0 0.75rem;
}

.scan-panel label {
  display: block;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

#scan-input {
  width: 100%;
  font-size: 1.3rem;
  padding: 0.8rem;
  border: 2px solid var(--accent);
  border-radius: 10px;
  font-family: inherit;
}

#scan-input:focus {
  outline: 3px solid var(--accent-dark);
  outline-offset: 1px;
}

.manual-search {
  margin-top: 1.5rem;
}

.manual-search summary {
  cursor: pointer;
  color: var(--muted);
  margin-bottom: 0.5rem;
  font-weight: 600;
}

.manual-search input {
  width: 100%;
  padding: 0.5rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  margin-bottom: 0.5rem;
  font-family: inherit;
}

#manual-search-results {
  list-style: none;
  margin: 0;
  padding: 0;
  max-height: 240px;
  overflow-y: auto;
}

#manual-search-results li {
  padding: 0.5rem;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

#manual-search-results li:hover {
  background: var(--bg);
}

.cart-table {
  width: 100%;
  border-collapse: collapse;
}

.cart-table th {
  text-align: left;
  color: var(--muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  border-bottom: 1px solid var(--border);
  padding: 0.5rem;
}

.cart-table td {
  padding: 0.6rem 0.5rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

.qty-controls {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.qty-controls button {
  padding: 0.2rem 0.6rem;
  font-size: 1rem;
}

.inventory-stock-edit {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.inventory-stock-edit input {
  width: 70px;
  padding: 0.3rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: inherit;
}

.inventory-stock-edit button {
  padding: 0.3rem 0.6rem;
  font-size: 0.85rem;
  white-space: nowrap;
}

.remove-btn {
  background: transparent;
  color: var(--danger);
  font-size: 1.1rem;
  padding: 0.2rem 0.5rem;
}

.remove-btn:hover {
  background: #fee2e2;
}

.cart-footer {
  margin-top: 1rem;
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}

.total-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.4rem;
  margin-bottom: 1rem;
  font-weight: 700;
}

.cart-footer button {
  width: 100%;
  padding: 1rem;
  font-size: 1.1rem;
}

.message {
  padding: 0.6rem 0.8rem;
  border-radius: 8px;
  font-size: 0.9rem;
  margin: 0.5rem 0;
}

.message.info {
  background: #fff0f3;
  color: #c2185b;
}

.message.error,
.error {
  background: #fef2f2;
  color: var(--danger);
}

.message.success {
  background: #f0fdf4;
  color: var(--success);
}

.row-flagged {
  background: #fef2f2;
}

#associate-barcode-btn {
  width: 100%;
  margin-top: 0.5rem;
}

/* Modal: asociar codigo de barras a un producto */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(25, 20, 20, 0.45);
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1rem;
  z-index: 100;
}

.modal-overlay[hidden] {
  display: none;
}

.modal {
  background: var(--panel);
  border-radius: 16px;
  padding: 1.5rem;
  width: 100%;
  max-width: 420px;
  max-height: 85vh;
  overflow-y: auto;
  box-shadow: 0 16px 40px rgba(0, 0, 0, 0.25);
}

.modal-wide {
  max-width: 560px;
}

.camera-scan-trigger {
  width: 100%;
  margin-top: 0.5rem;
}

.camera-scan-video-wrap {
  position: relative;
  background: #000;
  border-radius: 12px;
  overflow: hidden;
  margin: 0.5rem 0;
}

.camera-scan-video {
  width: 100%;
  max-height: 60vh;
  display: block;
}

/* Marca la misma zona que se recorta antes de analizar cada cuadro (ver
   drawImageOnCanvas en app.js) - el "spotlight" de sombra alrededor deja
   claro que solo esa franja central es la que se lee. */
.camera-scan-guide {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 85%;
  height: 32%;
  border: 3px solid var(--accent-dark);
  border-radius: 10px;
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.35);
  pointer-events: none;
}

.camera-scan-hint {
  text-align: center;
  color: var(--muted);
  font-size: 0.85rem;
  margin: 0.5rem 0 0;
}

.modal h3 {
  font-size: 0.95rem;
  margin: 1.25rem 0 0.5rem;
}

.location-count-list {
  max-height: 280px;
}

.location-count-list li {
  justify-content: space-between;
  cursor: default;
}

.location-count-list .count-qty {
  font-weight: 700;
  color: var(--text);
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.25rem;
}

.modal-header h2 {
  font-size: 1.1rem;
  margin: 0;
}

.icon-btn {
  background: transparent;
  color: var(--muted);
  padding: 0.2rem 0.5rem;
  font-size: 1.1rem;
}

.icon-btn:hover {
  background: var(--border);
}

.modal-barcode {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 0 0 1rem;
}

.modal label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.4rem;
  font-size: 0.9rem;
}

.modal input[type="text"],
.modal input[type="number"] {
  width: 100%;
  padding: 0.6rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 1rem;
  margin-bottom: 1rem;
}

.modal-results {
  list-style: none;
  margin: 0.75rem 0 0;
  padding: 0;
  max-height: 260px;
  overflow-y: auto;
}

.modal-results li {
  padding: 0.6rem 0.5rem;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-size: 0.95rem;
}

.modal-results li:hover {
  background: var(--bg);
}

.result-thumb {
  width: 36px;
  height: 36px;
  border-radius: 8px;
  object-fit: cover;
  flex-shrink: 0;
  background: var(--bg);
  border: 1px solid var(--border);
}

.result-thumb-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 0.9rem;
}

.result-name {
  flex: 1;
  min-width: 0;
}

.item-meta {
  color: var(--muted);
  font-size: 0.8rem;
  white-space: nowrap;
}

.modal-actions {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-top: 1rem;
}

/* Actualizacion de productos */
.admin-main {
  padding: 1.5rem;
  max-width: 1400px;
  margin: 0 auto;
}

.admin-filters {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.filter-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  align-items: center;
}

.filter-row input[type="text"],
.filter-row input[type="date"],
.filter-row select {
  padding: 0.6rem;
  border: 1px solid var(--border);
  border-radius: 8px;
  font-family: inherit;
  font-size: 0.95rem;
}

.filter-row input[type="text"] {
  flex: 1;
  min-width: 220px;
}

.filter-checks {
  color: var(--text);
  font-size: 0.9rem;
}

.filter-checks label,
.filter-row label {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* La regla de arriba gana por especificidad de clase sobre [hidden] del
   navegador; esta la vuelve a ganar de vuelta cuando el atributo esta
   presente (mismo patron que #login-screen[hidden] y #admin-load-more-btn[hidden]). */
.filter-checks label[hidden],
.filter-row label[hidden] {
  display: none;
}

.inline-number {
  width: 4.5rem;
  padding: 0.3rem;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: inherit;
}

.admin-status {
  color: var(--muted);
  font-size: 0.9rem;
  margin: 1rem 0 0.5rem;
}

.admin-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1rem;
  margin-top: 0.5rem;
}

.product-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 0.9rem;
  cursor: pointer;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  transition: box-shadow 0.15s ease, transform 0.05s ease;
}

.product-card:hover {
  box-shadow: 0 6px 16px rgba(255, 143, 163, 0.25);
}

.product-card:active {
  transform: scale(0.99);
}

.product-card-image {
  width: 100%;
  aspect-ratio: 1 / 1;
  border-radius: 10px;
  object-fit: cover;
  background: var(--bg);
  border: 1px solid var(--border);
}

.product-card-image-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--muted);
  font-size: 1.5rem;
}

.product-card-name {
  font-weight: 700;
  font-size: 0.95rem;
  line-height: 1.3;
}

.product-card-categories {
  color: var(--muted);
  font-size: 0.78rem;
}

.product-card-row {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
}

.product-card-row .label {
  color: var(--muted);
}

.product-card-missing {
  color: var(--danger);
  font-style: italic;
}

.stock-zero {
  color: var(--danger);
  font-weight: 700;
}

#admin-load-more-btn {
  display: block;
  margin: 1.5rem auto 0;
  min-width: 200px;
}

#admin-load-more-btn[hidden] {
  display: none;
}

.category-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.chip {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 0.25rem 0.7rem;
  font-size: 0.8rem;
  color: var(--muted);
  align-self: flex-start;
}

.chip-disabled {
  background: #fef2f2;
  border-color: #fecaca;
  color: var(--danger);
  font-weight: 700;
}

/* Control de ventas */
.sales-summary-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 1rem;
  margin: 1.5rem 0;
}

.summary-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.summary-card .label {
  color: var(--muted);
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.summary-card strong {
  font-size: 1.4rem;
}

.sales-tables {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.summary-card .delta {
  font-size: 0.8rem;
  font-weight: 600;
}

.summary-card .delta-up {
  color: var(--success);
}

.summary-card .delta-down {
  color: var(--danger);
}

.dashboard-legend {
  display: flex;
  gap: 1rem;
  font-size: 0.8rem;
  color: var(--muted);
  margin-bottom: 0.5rem;
}

.dashboard-legend-item {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.dashboard-legend-dot {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  display: inline-block;
}

.dashboard-legend-dot-physical {
  background: var(--accent-dark);
}

.dashboard-legend-dot-web {
  background: #eb6834;
}

.dashboard-legend-dot-mercadolibre {
  background: #c9971f;
}

.dashboard-chart-wrap {
  position: relative;
  width: 100%;
  height: 240px;
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem;
  margin-bottom: 1.5rem;
}

.dashboard-chart-wrap-sm {
  height: 200px;
  margin-bottom: 0;
}

.dashboard-chart-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.dashboard-chart-grid h3 {
  margin: 0 0 0.5rem;
}

.dashboard-margin-card {
  background: var(--panel);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
}

.dashboard-margin-card label {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin: 0.5rem 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.dashboard-margin-card input[type="number"] {
  width: 80px;
  padding: 0.3rem 0.5rem;
  border: 1px solid var(--border);
  border-radius: 8px;
}

.dashboard-margin-summary {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0.5rem 0 0;
}

.mercadolibre-status {
  font-size: 0.85rem;
  color: var(--muted);
  display: flex;
  align-items: center;
}

.mercadolibre-status.connected {
  color: var(--success);
}

.mercadolibre-status.disconnected {
  color: var(--danger);
}

.sale-row {
  cursor: pointer;
}

.sale-row:hover {
  background: var(--bg);
}

.sale-row-expanded {
  background: var(--bg);
  font-weight: 700;
}

.sale-detail-row td {
  background: var(--bg);
  padding: 0.75rem 1rem;
}

.sale-detail-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.sale-detail-table th {
  text-align: left;
  color: var(--muted);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  padding: 0.3rem 0.5rem;
  border-bottom: 1px solid var(--border);
}

.sale-detail-table td {
  padding: 0.4rem 0.5rem;
  border-bottom: 1px solid var(--border);
  background: transparent;
}

/* ---------- Responsive movil ---------- */
/* Todo lo de arriba queda igual (desktop); estas reglas solo entran en
   pantallas chicas, asi que no hay riesgo de regresion en escritorio. */
@media (max-width: 768px) {
  .topbar {
    flex-wrap: wrap;
    row-gap: 0.5rem;
  }

  .topbar-actions {
    flex-wrap: wrap;
    row-gap: 0.5rem;
  }

  /* Caja: el panel de escaneo pasa a ir arriba del carrito, no al lado
     (el grid de escritorio usa una columna fija de 380px que no entra). */
  .pos-main {
    grid-template-columns: 1fr;
    padding: 1rem;
    gap: 1rem;
  }

  .pos-mercadolibre-section {
    margin: 0 1rem 1rem;
  }

  .mode-bar {
    flex-direction: column;
    align-items: stretch;
  }

  .mode-bar label {
    margin-bottom: 0.25rem;
  }

  .mode-bar select,
  .mode-bar #location-count-btn {
    width: 100%;
  }

  /* Tablas anchas (carrito, ventas recientes, detalle de venta): scroll
     horizontal propio en vez de romper el layout de la pantalla. */
  .cart-table,
  .sale-detail-table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Modales: hoja casi de pantalla completa en vez de caja centrada de
     ancho fijo - el de "Cargar stock por conteo" tiene muchos campos
     apilados y necesita el espacio. */
  .modal-overlay {
    padding: 0;
    align-items: stretch;
  }

  .modal {
    max-width: 100%;
    max-height: 100vh;
    height: 100%;
    border-radius: 0;
  }

  /* Evita el zoom automatico de iOS Safari al enfocar un input con letra
     chica (se activa por debajo de 16px). */
  .modal input[type="text"],
  .modal input[type="number"],
  .modal input[type="password"] {
    font-size: 16px;
  }

  /* Control de ventas: solo lo minimo indispensable (total vendido +
     ventas recientes con su detalle expandible). El resto del dashboard
     (graficos, combos, baja rotacion, recurrencia, tablas por
     ubicacion/categoria/origen, pedidos Mercado Libre) se oculta entero via
     su wrapper - en escritorio sigue disponible tal cual. */
  #sales-dashboard-extra {
    display: none;
  }

  #sales-summary-cards .summary-card:not(:first-child) {
    display: none;
  }

  /* De los filtros solo quedan los botones rapidos "Hoy"/"Este mes"
     (primer .filter-row); el resto de filtros avanzados se ocultan. */
  #sales-screen .admin-filters .filter-row:not(:first-child) {
    display: none;
  }
}