/* ==========================================================================
   MOBILE & RESPONSIVE STYLES (MOBILE-FIRST ADAPTATIONS & PWA)
   ========================================================================== */

/* Mobile Bottom Navigation Bar (Hidden on Desktop) */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 62px;
  background: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  z-index: 90;
  display: none;
  justify-content: space-around;
  align-items: center;
  padding: 0 0.5rem;
  box-shadow: 0 -4px 10px rgba(0, 0, 0, 0.2);
}

.mobile-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 2px;
  background: transparent;
  border: none;
  color: var(--text-secondary);
  font-size: 0.72rem;
  font-weight: 700;
  cursor: pointer;
  padding: 6px 10px;
  border-radius: var(--radius-md);
  transition: var(--transition);
  flex: 1;
}

.mobile-nav-item .nav-icon {
  font-size: 1.3rem;
  line-height: 1;
}

.mobile-nav-item.active {
  color: #38bdf8;
  background: rgba(2, 132, 199, 0.15);
}

/* Mobile Floating Cart Bar in POS */
.mobile-floating-cart-bar {
  display: none;
  position: fixed;
  bottom: 68px;
  left: 12px;
  right: 12px;
  background: linear-gradient(135deg, #0284c7, #0369a1);
  color: white;
  padding: 0.75rem 1.1rem;
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 25px rgba(2, 132, 199, 0.5);
  z-index: 85;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  animation: slideUp 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.mobile-floating-cart-bar.hidden {
  display: none !important;
}

.floating-cart-info {
  display: flex;
  flex-direction: column;
}

.floating-cart-count {
  font-size: 0.8rem;
  opacity: 0.9;
  font-weight: 600;
}

.floating-cart-total {
  font-size: 1.25rem;
  font-family: var(--font-mono);
  font-weight: 800;
}

.floating-cart-action {
  background: white;
  color: var(--primary-hover);
  padding: 0.45rem 1rem;
  border-radius: var(--radius-full);
  font-weight: 800;
  font-size: 0.85rem;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* Mobile POS View Mode Switcher (Catálogo / Ticket) */
.mobile-pos-tabs {
  display: none;
  padding: 0.5rem 1rem;
  background: var(--bg-surface-elevated);
  border-bottom: 1px solid var(--border-color);
  gap: 0.5rem;
}

.btn-mobile-pos-tab {
  flex: 1;
  padding: 0.6rem;
  background: transparent;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  color: var(--text-secondary);
  font-weight: 700;
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
}

.btn-mobile-pos-tab.active {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
}

/* Camera Barcode Scanner Modal */
.camera-scanner-modal-body {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 1rem;
  background: #000;
  border-radius: var(--radius-md);
  overflow: hidden;
}

.camera-preview-wrapper {
  position: relative;
  width: 100%;
  max-width: 400px;
  height: 280px;
  background: #111;
  border-radius: var(--radius-md);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}

#camera-video-feed {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.camera-viewfinder {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 75%;
  height: 140px;
  border: 2px solid rgba(56, 189, 248, 0.8);
  border-radius: var(--radius-md);
  box-shadow: 0 0 0 9999px rgba(0, 0, 0, 0.45);
  pointer-events: none;
}

.camera-laser-line {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: #ef4444;
  box-shadow: 0 0 8px #ef4444, 0 0 16px #ef4444;
  animation: laserScan 2s infinite ease-in-out;
}

@keyframes laserScan {
  0%, 100% { top: 5%; }
  50% { top: 92%; }
}

.camera-controls-bar {
  display: flex;
  gap: 0.8rem;
  margin-top: 1rem;
  width: 100%;
  justify-content: center;
}

/* ==========================================================================
   RESPONSIVE BREAKPOINTS
   ========================================================================== */
@media (max-width: 768px) {
  /* Show Mobile Bottom Nav */
  .mobile-bottom-nav {
    display: flex;
  }

  /* Adjust Main Layout Height to leave room for bottom nav */
  .app-layout {
    padding-bottom: 62px;
    height: 100vh;
  }

  /* Simplify Topbar on mobile */
  .topbar {
    padding: 0 0.8rem;
    height: 54px;
  }

  .main-nav {
    display: none !important; /* Replaced by bottom nav */
  }

  .brand-badge {
    display: none;
  }

  .clock-display {
    display: none;
  }

  .shift-badge {
    font-size: 0.75rem;
    padding: 2px 6px;
  }

  .sync-status span {
    display: none;
  }

  /* POS View Mobile Layout */
  .pos-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    overflow: hidden;
  }

  .mobile-pos-tabs {
    display: flex;
  }

  /* Toggle panels based on mobile active tab */
  .pos-container[data-mobile-view="catalog"] .pos-cart-panel {
    display: none !important;
  }

  .pos-container[data-mobile-view="catalog"] .pos-catalog-panel {
    display: flex !important;
    height: 100%;
  }

  .pos-container[data-mobile-view="ticket"] .pos-catalog-panel {
    display: none !important;
  }

  .pos-container[data-mobile-view="ticket"] .pos-cart-panel {
    display: flex !important;
    height: 100%;
    border-right: none;
  }

  /* Show floating cart bar in catalog view if items exist */
  .pos-container[data-mobile-view="catalog"] .mobile-floating-cart-bar {
    display: flex;
  }

  /* Catalog Grid in Mobile */
  .product-catalog-grid {
    grid-template-columns: repeat(2, 1fr) !important;
    gap: 0.6rem;
  }

  .product-card {
    padding: 0.65rem;
    min-height: 100px;
  }

  .prod-name {
    font-size: 0.82rem;
  }

  .prod-price {
    font-size: 0.92rem;
  }

  /* Modals on Mobile */
  .modal-content {
    width: 96% !important;
    max-height: 94vh !important;
    border-radius: var(--radius-md);
  }

  .modal-header {
    padding: 0.8rem 1rem;
  }

  .modal-body {
    padding: 1rem;
  }

  .modal-footer {
    padding: 0.8rem 1rem;
    flex-wrap: wrap;
  }

  .payment-methods-grid {
    grid-template-columns: repeat(2, 1fr) !important;
  }

  .form-row {
    grid-template-columns: 1fr !important;
  }

  /* Inventory & Sales Containers */
  .inventory-container, .cashier-container, .settings-container {
    padding: 0.8rem !important;
    gap: 0.9rem !important;
  }

  .inventory-stats-bar, .shift-summary-grid {
    grid-template-columns: 1fr 1fr !important;
    gap: 0.6rem !important;
  }

  .inv-stat-card, .shift-summary-card {
    padding: 0.75rem !important;
  }

  .inv-stat-value, .shift-card-value {
    font-size: 1.05rem !important;
  }

  .inventory-toolbar {
    flex-direction: column;
    align-items: stretch;
    padding: 0.8rem;
  }

  .toolbar-left {
    flex-direction: column;
    align-items: stretch;
  }

  .search-input-wrapper {
    min-width: 100% !important;
  }
}

@keyframes slideUp {
  from { transform: translateY(100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}