/* ══════════════════════════════════════════════════════════════════════
   Cashier System — Premium Glassmorphism Style Guide (Apple Style)
   ══════════════════════════════════════════════════════════════════════ */

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

:root {
  /* Apple-style minimalist palette */
  --primary: #007aff;          /* iOS Blue */
  --primary-dark: #005bb5;
  --primary-light: #e5f1ff;
  --accent: #ff2d55;           /* iOS Pink/Red for accents */
  --success: #34c759;
  --warning: #ff9500;
  --text: #1d1d1f;
  --text-secondary: #86868b;
  --danger: #ff3b30;
  
  /* Glassmorphism Variables */
  --glass-bg: rgba(255, 255, 255, 0.7);
  --glass-border: rgba(255, 255, 255, 0.5);
  --glass-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.05);
  --glass-shadow-hover: 0 12px 40px 0 rgba(31, 38, 135, 0.1);
  
  --radius: 20px; /* Softer, Apple-like rounded corners */
  --radius-sm: 12px;
  --font-mn: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', 'Roboto', sans-serif;
}

/* ── Base & Typography ────────────────────────────────────────────── */
html {
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-mn);
  color: var(--text);
  line-height: 1.5;
  
  /* Vibrant, fluid mesh-gradient background */
  background: linear-gradient(135deg, #f5f7fa 0%, #e8ecf2 100%);
  background-attachment: fixed;
  min-height: 100vh;
  position: relative;
  overflow-x: hidden;
}

/* Background gradient blobs for glass effect */
body::before {
  content: '';
  position: fixed;
  top: -15%;
  left: -10%;
  width: 50vw;
  height: 50vw;
  background: radial-gradient(circle, rgba(0,122,255,0.15) 0%, rgba(255,255,255,0) 70%);
  z-index: -1;
  pointer-events: none;
}

body::after {
  content: '';
  position: fixed;
  bottom: -15%;
  right: -10%;
  width: 60vw;
  height: 60vw;
  background: radial-gradient(circle, rgba(255,45,85,0.1) 0%, rgba(255,255,255,0) 70%);
  z-index: -1;
  pointer-events: none;
}

h1, h2, h3, h4 {
  margin: 0 0 0.5rem;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.02em;
}

/* ── Layout Screens ────────────────────────────────────────────────── */
.screen {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.hidden {
  display: none !important;
}

/* ── UI Components (The Glass Effect) ────────────────────────────── */
.setup-card, .cart-card, .form-card, .table-card, .stat-card, .section-card, .app-header {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--glass-shadow);
}

/* ── Setup / Login Screen ────────────────────────────────────────── */
.setup-card {
  max-width: 420px;
  margin: 10vh auto;
  padding: 2.5rem;
}

.setup-card h1 {
  text-align: center;
  color: var(--primary);
  font-size: 1.75rem;
}

.setup-subtitle {
  text-align: center;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.setup-field {
  margin-bottom: 1.25rem;
}

.setup-field label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 500;
  font-size: 0.875rem;
  color: var(--text-secondary);
}

/* ── Inputs & Forms ──────────────────────────────────────────────── */
input[type="text"], input[type="number"], input[type="url"], input[type="date"], select, textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(0, 0, 0, 0.08);
  background: rgba(255, 255, 255, 0.7);
  font-family: inherit;
  font-size: 1rem;
  color: var(--text);
  transition: all 0.25s ease;
}

input:focus, select:focus, textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px var(--primary-light);
  background: #ffffff;
}

/* ── Buttons ─────────────────────────────────────────────────────── */
button {
  font-family: inherit;
  border-radius: var(--radius-sm);
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.25, 0.8, 0.25, 1);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.btn-primary {
  background: var(--primary);
  color: #fff;
  border: none;
  padding: 0.85rem 1.5rem;
  box-shadow: 0 4px 12px rgba(0, 122, 255, 0.25);
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 16px rgba(0, 122, 255, 0.35);
  background: var(--primary-dark);
}

.btn-primary:disabled {
  background: #c7c7cc;
  box-shadow: none;
  cursor: not-allowed;
}

.btn-large {
  width: 100%;
  padding: 1rem;
  font-size: 1.05rem;
}

.btn-outline {
  background: rgba(255, 255, 255, 0.6);
  border: 1.5px solid var(--primary);
  color: var(--primary);
  padding: 0.75rem 1.25rem;
}

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

.btn-text {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding: 0.5rem;
}

.btn-text:hover {
  color: var(--text);
  background: rgba(0,0,0,0.05);
}

.btn-text.danger:hover {
  color: var(--danger);
  background: rgba(255, 59, 48, 0.1);
}

.btn-danger {
  background: var(--danger);
  color: white;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.75rem 1.25rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s cubic-bezier(0.25, 0.8, 0.25, 1);
}
.btn-danger:hover {
  background: #d70015;
  box-shadow: 0 4px 12px rgba(255, 59, 48, 0.3);
}

/* ── Large Action Buttons ───────────────────────────────────────── */
.btn-new-order {
  background: var(--primary);
  color: white;
  border: none;
  border-radius: var(--radius);
  padding: 1rem 2rem;
  font-size: 1.2rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: var(--glass-shadow);
  min-height: 64px;
  min-width: 200px;
  transition: all 0.25s cubic-bezier(0.25, 0.8, 0.25, 1);
}
.btn-new-order:hover { background: var(--primary-dark); box-shadow: var(--glass-shadow-hover); }
.btn-new-order:active { transform: scale(0.97); }

/* Order tab buttons - bigger for easier clicking */
.orders-tabs .order-chip {
  min-height: 56px;
  min-width: 120px;
  padding: 0.75rem 1.25rem;
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  gap: 0.75rem;
}
.orders-tabs .order-chip-num { font-size: 1.1rem; }
.orders-tabs .order-chip-total { font-size: 1.05rem; }

/* ── Header & Tabs ──────────────────────────────────────────────── */
.app-header {
  border-radius: 0 0 var(--radius) var(--radius);
  border-top: none;
  border-left: none;
  border-right: none;
  padding: 1rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
  margin-bottom: 1.5rem;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.header-brand h2 {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 700;
}

.cashier-badge {
  background: rgba(0,0,0,0.05);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.app-nav {
  display: flex;
  gap: 0.5rem;
  background: rgba(0,0,0,0.04);
  padding: 0.35rem;
  border-radius: var(--radius-sm);
}

.tab-btn {
  background: transparent;
  border: none;
  padding: 0.6rem 1.25rem;
  color: var(--text-secondary);
  font-weight: 500;
}

.tab-btn.active {
  background: #fff;
  color: var(--text);
  box-shadow: 0 2px 8px rgba(0,0,0,0.08);
}

/* ── MAIN LAYOUT (App Content) ──────────────────────────────────── */
.app-content {
  padding: 0 2rem 2rem 2rem;
  flex: 1;
  max-width: 1400px;
  margin: 0 auto;
  width: 100%;
}

/* ── TAB 1: SELL (Борлуулалт) ───────────────────────────────────── */
.sell-layout {
  display: grid;
  grid-template-columns: 1fr 400px;
  gap: 1.5rem;
  align-items: start;
}

.toolbar {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(160px, 1fr));
  gap: 1rem;
  overflow-y: auto;
  max-height: calc(100vh - 200px);
  padding-bottom: 2rem;
}

/* Glass Product Cards */
.product-card {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-radius: var(--radius-sm);
  padding: 1.25rem 1rem;
  cursor: pointer;
  text-align: center;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  box-shadow: 0 4px 15px rgba(0,0,0,0.03);
  transition: all 0.25s cubic-bezier(0.25, 0.8, 0.25, 1);
}

.product-card:hover {
  transform: scale(1.03) translateY(-4px);
  box-shadow: var(--glass-shadow-hover);
  border-color: rgba(0, 122, 255, 0.4);
  background: rgba(255,255,255,0.9);
}

.product-card.added-flash {
  background: var(--primary-light);
  transform: scale(0.95);
}

.prod-name {
  font-weight: 600;
  font-size: 1.05rem;
  margin-bottom: 0.25rem;
  color: var(--text);
}

.prod-cat {
  font-size: 0.75rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.prod-price {
  font-weight: 700;
  color: var(--primary);
  font-size: 1.15rem;
}

/* Sidebar Cart */
.cart-card {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  position: sticky;
  top: 100px;
}

.cart-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(0,0,0,0.05);
  padding-bottom: 1rem;
}

.cart-header h3 {
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

#cart-count {
  background: var(--primary);
  color: white;
  padding: 0.1rem 0.6rem;
  border-radius: 999px;
  font-size: 0.85rem;
}

.cart-items-list {
  max-height: 35vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.cart-item {
  background: rgba(255,255,255,0.5);
  border: 1px solid rgba(0,0,0,0.05);
  border-radius: var(--radius-sm);
  padding: 0.85rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.cart-item-name {
  font-weight: 600;
  display: block;
}

.cart-item-price {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.cart-item-qty {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(0,0,0,0.03);
  padding: 0.25rem;
  border-radius: 8px;
}

.qty-btn {
  width: 28px;
  height: 28px;
  padding: 0;
  background: white;
  border: 1px solid rgba(0,0,0,0.05);
  box-shadow: 0 1px 3px rgba(0,0,0,0.05);
  color: var(--text);
  border-radius: 6px;
}

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

.qty-num {
  min-width: 20px;
  text-align: center;
  font-weight: 600;
  font-size: 0.9rem;
}

.cart-summary {
  border-top: 1px solid rgba(0,0,0,0.05);
  padding-top: 1rem;
}

.total-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 1.25rem;
  font-weight: 600;
}

#cart-total {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--primary);
}

.payment-methods-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
}

.payment-btn {
  background: rgba(255,255,255,0.6);
  border: 2px solid transparent;
  padding: 0.75rem 0.5rem;
  border-radius: var(--radius-sm);
  flex-direction: column;
  gap: 0.25rem;
}

.payment-btn:hover {
  background: rgba(255,255,255,0.9);
}

.payment-btn.selected {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary-dark);
}

.pm-icon {
  font-size: 1.5rem;
}

/* ── Payment Buttons - Bigger for easier tapping ───────────────── */
.payment-btn {
  background: rgba(255,255,255,0.6);
  border: 2px solid transparent;
  padding: 1rem;
  border-radius: var(--radius-sm);
  flex-direction: column;
  gap: 0.25rem;
  min-height: 80px;
  min-width: 80px;
}
.payment-btn:hover { background: rgba(255,255,255,0.9); }
.payment-btn.selected {
  background: var(--primary-light);
  border-color: var(--primary);
  color: var(--primary-dark);
}

/* ── Print Styles for Thermal Receipt ──────────────────────────── */
@media print {
  @page { margin: 0; size: 80mm auto; }
  body * { visibility: hidden; }
  #daily-report-print, #daily-report-print * { visibility: visible; }
  #daily-report-print {
    position: absolute;
    left: 0;
    top: 0;
    width: 80mm;
    font-family: 'monospace', monospace;
    font-size: 10pt;
    line-height: 1.4;
    padding: 10mm;
  }
  .print-header { text-align: center; border-bottom: 2px dashed #000; padding-bottom: 5px; margin-bottom: 10px; }
  .print-title { font-size: 14pt; font-weight: bold; }
  .print-subtitle { font-size: 10pt; margin-top: 2px; }
  .print-section { margin: 10px 0; }
  .print-section-title { font-weight: bold; border-bottom: 1px dashed #000; padding-bottom: 3px; margin-bottom: 5px; }
  .print-row { display: flex; justify-content: space-between; margin: 3px 0; }
  .print-row.total { font-weight: bold; font-size: 12pt; border-top: 1px solid #000; padding-top: 5px; margin-top: 10px; }
  .print-items { margin: 5px 0; }
  .print-item { display: flex; justify-content: space-between; font-size: 9pt; }
  .print-payment { display: flex; justify-content: space-between; margin: 3px 0; }
  .print-footer { text-align: center; margin-top: 15px; font-size: 9pt; color: #666; border-top: 2px dashed #000; padding-top: 10px; }
}

/* ── Report Print Button ───────────────────────────────────────── */
.btn-print-report {
  background: var(--success);
  color: white;
  border: none;
  border-radius: var(--radius);
  padding: 1rem 2rem;
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 4px 12px rgba(52, 199, 89, 0.3);
  min-height: 56px;
  min-width: 200px;
  transition: all 0.25s cubic-bezier(0.25, 0.8, 0.25, 1);
}
.btn-print-report:hover { background: #28a745; box-shadow: 0 6px 16px rgba(52, 199, 89, 0.4); }
.btn-print-report:active { transform: scale(0.97); }

/* ── TAB 2: PRODUCTS (Бүтээгдэхүүн) ─────────────────────────────── */
.products-manager-layout {
  display: grid;
  grid-template-columns: 350px 1fr;
  gap: 1.5rem;
  align-items: start;
}

.form-card {
  padding: 1.5rem;
  position: sticky;
  top: 100px;
}

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

.form-field label {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.35rem;
  color: var(--text-secondary);
}

.table-card {
  padding: 1.5rem;
  overflow: hidden;
}

.table-wrapper {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

.data-table th, .data-table td {
  padding: 1rem;
  text-align: left;
  border-bottom: 1px solid rgba(0,0,0,0.05);
}

.data-table th {
  font-weight: 600;
  color: var(--text-secondary);
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.data-table tbody tr {
  transition: background 0.2s;
}

.data-table tbody tr:hover {
  background: rgba(255,255,255,0.4);
}

.status-badge {
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 600;
}
.status-badge.active { background: #e3fcec; color: var(--success); }
.status-badge.inactive { background: #f2f2f7; color: var(--text-secondary); }

/* ── TAB 3: REPORTS (Тайлан) ────────────────────────────────────── */
.reports-layout {
  max-width: 1000px;
  margin: 0 auto;
}

.date-picker-group {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--glass-bg);
  padding: 0.5rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--glass-border);
}

.date-picker-group input {
  width: auto;
  padding: 0.5rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: 1.5rem;
}

.stat-card {
  padding: 1.5rem;
  text-align: center;
}

.stat-label {
  display: block;
  font-size: 0.9rem;
  color: var(--text-secondary);
  margin-bottom: 0.5rem;
}

.stat-value {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.03em;
}

.payment-breakdown-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
}

.pm-breakdown-card {
  background: rgba(255,255,255,0.6);
  padding: 1rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border: 1px solid rgba(0,0,0,0.03);
}

.top-products-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.top-product-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255,255,255,0.5);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-sm);
}

/* ── Utilities & Toast ──────────────────────────────────────────── */
.empty-state {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-secondary);
  font-style: italic;
}

.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.toast {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  padding: 1rem 1.5rem;
  border-radius: var(--radius-sm);
  box-shadow: 0 8px 30px rgba(0,0,0,0.12);
  font-weight: 500;
  border-left: 5px solid;
  animation: slideIn 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.toast-success { border-left-color: var(--success); }
.toast-error { border-left-color: var(--danger); }
.toast-info { border-left-color: var(--primary); }

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

.toast.fade-out {
  animation: fadeOut 0.3s ease forwards;
}

@keyframes fadeOut {
  to { transform: translateY(20px); opacity: 0; }
}

/* ── Queue / Number-calling ──────────────────────────────────────── */
.queue-layout {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.queue-current-card {
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  box-shadow: var(--glass-shadow);
  padding: 2rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.queue-current-label {
  color: var(--text-secondary);
  font-weight: 600;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-size: 0.85rem;
}

.queue-current-number {
  font-size: clamp(3rem, 10vw, 5rem);
  font-weight: 800;
  color: var(--success);
  line-height: 1.1;
}

.queue-display-link {
  margin-top: 0.75rem;
}

.queue-legend {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.queue-legend span {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}
.dot.waiting { background: var(--text-secondary); }
.dot.called { background: var(--warning); }
.dot.served { background: var(--success); }

.queue-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
  gap: 0.75rem;
}

.queue-ticket {
  border: 1.5px solid rgba(0,0,0,0.08);
  background: rgba(255,255,255,0.7);
  border-radius: var(--radius-sm);
  padding: 0.85rem 0.5rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.25rem;
}

.queue-ticket-num {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--text);
}

.queue-ticket-status {
  font-size: 0.7rem;
  color: var(--text-secondary);
}

.queue-ticket.waiting { border-color: rgba(142,142,147,0.3); }
.queue-ticket.called {
  border-color: var(--warning);
  background: rgba(255, 149, 0, 0.12);
  animation: ticketPulse 1.2s ease-in-out infinite;
}
.queue-ticket.called .queue-ticket-num { color: var(--warning); }
.queue-ticket.served {
  border-color: var(--success);
  background: rgba(52, 199, 89, 0.1);
  opacity: 0.7;
}
.queue-ticket.served .queue-ticket-num { color: var(--success); }

@keyframes ticketPulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255,149,0,0.35); }
  50% { box-shadow: 0 0 0 8px rgba(255,149,0,0); }
}

/* ── Order number confirmation modal ─────────────────────────────── */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 10000;
}

.order-number-card {
  background: #fff;
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  max-width: 90vw;
  width: 340px;
  box-shadow: 0 20px 60px rgba(0,0,0,0.3);
}

.order-number-label {
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 0.03em;
}

.order-number-value {
  font-size: 5rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1.1;
}

.order-number-hint {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 1rem;
}

/* ── Responsive Mobile Adjustments ──────────────────────────────── */
@media (max-width: 900px) {
  .sell-layout { grid-template-columns: 1fr; }
  .products-manager-layout { grid-template-columns: 1fr; }
  .app-header { flex-direction: column; gap: 1rem; padding: 1rem; }
  .stats-grid { grid-template-columns: 1fr; }
}