/* ==========================================================================
   INVOX HF - Modern Clean SaaS Theme
   Palette: Pure White (#ffffff), Soft Slate BG (#f8fafc), Sky Blue (#0ea5e9, #0284c7)
   ========================================================================== */

:root {
  --bg-app: #f8fafc;
  --bg-card: #ffffff;
  --bg-sidebar: #ffffff;
  --text-main: #1e293b;
  --text-muted: #64748b;
  --text-light: #94a3b8;
  
  --primary: #0284c7;
  --primary-hover: #0369a1;
  --primary-light: #e0f2fe;
  --primary-subtle: #f0f9ff;
  
  --border-color: #e2e8f0;
  --border-focus: #38bdf8;
  
  --success: #10b981;
  --success-bg: #ecfdf5;
  --success-text: #065f46;
  
  --warning: #f59e0b;
  --warning-bg: #fffbeb;
  --warning-text: #92400e;
  
  --danger: #ef4444;
  --danger-bg: #fef2f2;
  --danger-text: #991b1b;

  --sidebar-width: 250px;
  --sidebar-collapsed-width: 72px;
  --header-height: 64px;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 14px;
  --radius-full: 9999px;
  
  --transition: all 0.2s ease-in-out;
}

/* Base & Reset */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-app);
  color: var(--text-main);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a {
  color: var(--primary);
  text-decoration: none;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: 0.9rem;
}

/* App Layout */
.app-container {
  display: flex;
  min-height: 100vh;
  width: 100vw;
  background-color: var(--bg-app);
}

/* Sidebar */
.sidebar {
  width: var(--sidebar-width);
  background-color: var(--bg-sidebar);
  border-right: 1px solid var(--border-color);
  display: flex;
  flex-direction: column;
  transition: width 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 40;
  overflow-y: auto;
  overflow-x: hidden;
}

.sidebar.collapsed {
  width: var(--sidebar-collapsed-width);
}

.sidebar-header {
  height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  border-bottom: 1px solid var(--border-color);
}

.sidebar.collapsed .sidebar-header {
  padding: 0 0.6rem;
  justify-content: space-between;
  gap: 0.35rem;
}

.sidebar.collapsed .brand-logo {
  cursor: pointer;
}

.sidebar.collapsed .brand-logo span {
  display: none;
}

.sidebar.collapsed .toggle-sidebar-btn span {
  transform: rotate(180deg);
  display: inline-block;
}

.brand-logo {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary);
  letter-spacing: -0.025em;
  white-space: nowrap;
}

.brand-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, #0284c7 0%, #38bdf8 100%);
  color: white;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.1rem;
  flex-shrink: 0;
}

.toggle-sidebar-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.35rem;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

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

.sidebar-menu {
  padding: 0.75rem 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 10px;
  flex: 1;
}

.menu-group-title {
  font-size: 0.68rem;
  font-weight: 700;
  color: var(--text-light);
  letter-spacing: 0.08em;
  padding: 0 0.75rem;
  margin-top: 10px;
  margin-bottom: 2px;
  text-transform: uppercase;
}

.menu-group-title:first-child {
  margin-top: 0;
}

.sidebar.collapsed .menu-group-title {
  display: none;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.45rem 0.75rem;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.88rem;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  position: relative;
}

.nav-item:hover {
  background-color: var(--primary-subtle);
  color: var(--primary);
}

.nav-item.active {
  background-color: var(--primary);
  color: #ffffff;
  font-weight: 600;
  box-shadow: 0 2px 8px rgba(2, 132, 199, 0.3);
}

.nav-item.active .nav-icon {
  color: #ffffff;
}

.nav-icon {
  min-width: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.nav-icon svg, .nav-icon i {
  width: 19px;
  height: 19px;
  stroke-width: 1.8;
}

.btn svg, .btn i {
  width: 16px;
  height: 16px;
  stroke-width: 2;
  vertical-align: middle;
}

.kpi-icon svg, .kpi-icon i {
  width: 24px;
  height: 24px;
  stroke-width: 1.8;
}

.sidebar.collapsed .nav-label {
  display: none;
}

.nav-badge {
  margin-left: auto;
  background-color: var(--danger);
  color: white;
  font-size: 0.7rem;
  font-weight: 700;
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-full);
}

.sidebar.collapsed .nav-badge {
  position: absolute;
  top: 4px;
  right: 4px;
  padding: 0.1rem 0.3rem;
  font-size: 0.6rem;
}

/* Main Content Area */
.main-wrapper {
  margin-left: var(--sidebar-width);
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  transition: margin-left 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  max-width: calc(100vw - var(--sidebar-width));
}

.sidebar.collapsed + .main-wrapper {
  margin-left: var(--sidebar-collapsed-width);
  max-width: calc(100vw - var(--sidebar-collapsed-width));
}

/* Top Header */
.topbar {
  height: var(--header-height);
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.75rem;
  position: sticky;
  top: 0;
  z-index: 30;
}

.page-header-title {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text-main);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.datetime-badge {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.user-avatar {
  width: 34px;
  height: 34px;
  background-color: var(--primary);
  color: white;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
}

/* Content Container */
.content-body {
  padding: 1.5rem 1.75rem;
  flex: 1;
}

/* Card Styles */
.card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  margin-bottom: 1.25rem;
}

.card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 1rem;
  margin-bottom: 1rem;
  border-bottom: 1px solid var(--border-color);
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* Top Dashboard KPIs */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.kpi-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.25rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow-sm);
  position: relative;
  overflow: hidden;
}

.kpi-card::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
}

.kpi-card.blue::before { background-color: var(--primary); }
.kpi-card.green::before { background-color: var(--success); }
.kpi-card.orange::before { background-color: var(--warning); }
.kpi-card.red::before { background-color: var(--danger); }

.kpi-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
}

.kpi-card.blue .kpi-icon { background-color: var(--primary-light); color: var(--primary); }
.kpi-card.green .kpi-icon { background-color: var(--success-bg); color: var(--success); }
.kpi-card.orange .kpi-icon { background-color: var(--warning-bg); color: var(--warning); }
.kpi-card.red .kpi-icon { background-color: var(--danger-bg); color: var(--danger); }

.kpi-content {
  display: flex;
  flex-direction: column;
}

.kpi-value {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--text-main);
  letter-spacing: -0.02em;
}

.kpi-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-light);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Dashboard Two Column Grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.45rem;
  font-weight: 600;
  padding: 0.55rem 1rem;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
}

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

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

.btn-outline {
  background-color: transparent;
  border-color: var(--border-color);
  color: var(--text-main);
}

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

.btn-outline-primary {
  background-color: var(--primary-subtle);
  border-color: var(--primary-light);
  color: var(--primary);
}

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

.btn-danger {
  background-color: var(--danger);
  color: white;
}

.btn-danger:hover {
  background-color: #dc2626;
}

.btn-sm {
  padding: 0.35rem 0.65rem;
  font-size: 0.8rem;
  border-radius: var(--radius-sm);
}

.btn-lg {
  padding: 0.85rem 1.5rem;
  font-size: 1rem;
  font-weight: 700;
}

/* Form Controls */
.form-group {
  margin-bottom: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
}

.form-label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.form-control {
  width: 100%;
  padding: 0.55rem 0.85rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background-color: #ffffff;
  color: var(--text-main);
  outline: none;
  transition: var(--transition);
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(2, 132, 199, 0.15);
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

/* Tables */
.table-responsive {
  width: 100%;
  overflow-x: auto;
}

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

.custom-table th {
  background-color: #f1f5f9;
  color: var(--text-muted);
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.75rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--border-color);
}

.custom-table td {
  padding: 0.85rem 1rem;
  font-size: 0.88rem;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
}

.custom-table tr:hover td {
  background-color: var(--primary-subtle);
}

.custom-table tr.row-selected td {
  background-color: #f0f9ff;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-full);
}

.badge-primary {
  background-color: var(--primary-light);
  color: var(--primary);
}

.badge-success {
  background-color: var(--success-bg);
  color: var(--success-text);
}

.badge-warning {
  background-color: var(--warning-bg);
  color: var(--warning-text);
}

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

.badge-ref {
  background-color: #e0f2fe;
  color: #0369a1;
  font-family: monospace;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
}

/* Filter Bar */
.filter-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.search-input-wrap {
  position: relative;
  flex: 1;
  min-width: 250px;
}

.search-icon {
  position: absolute;
  left: 0.85rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-light);
}

.search-input {
  padding-left: 2.25rem;
}

/* POS / Nouvelle Vente Layout */
.pos-layout {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 1.25rem;
  align-items: start;
}

.pos-client-card, .pos-products-card {
  margin-bottom: 1.25rem;
}

.pos-summary-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem;
  background-color: #f8fafc;
  border-top: 2px solid var(--border-color);
  border-radius: 0 0 var(--radius-lg) var(--radius-lg);
}

.pos-summary-item {
  display: flex;
  flex-direction: column;
}

.pos-summary-label {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--text-muted);
}

.pos-summary-val {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-main);
}

.pos-summary-val.total-highlight {
  font-size: 1.6rem;
  color: var(--primary);
}

/* POS Right Payment Panel */
.pos-payment-panel {
  position: sticky;
  top: calc(var(--header-height) + 1.5rem);
}

/* Autocomplete Suggestion Dropdowns */
.autocomplete-container {
  position: relative;
}

.autocomplete-dropdown {
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: white;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  max-height: 250px;
  overflow-y: auto;
  z-index: 50;
  margin-top: 4px;
}

.autocomplete-item {
  padding: 0.65rem 0.85rem;
  cursor: pointer;
  border-bottom: 1px solid #f1f5f9;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.autocomplete-item:hover, .autocomplete-item.selected {
  background-color: var(--primary-subtle);
}

/* Modals */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(15, 23, 42, 0.5);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  opacity: 0;
  visibility: hidden;
  transition: all 0.2s ease;
  padding: 1rem;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background-color: #ffffff;
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 650px;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-lg);
  transform: translateY(20px);
  transition: transform 0.2s ease;
}

.modal-card.modal-lg {
  max-width: 900px;
}

.modal-card.modal-xl {
  max-width: 1200px;
  width: 95%;
}

.modal-card.modal-2xl {
  max-width: 1350px;
  width: 96%;
}

.modal-overlay.active .modal-card {
  transform: translateY(0);
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-body {
  padding: 1.5rem;
}

.modal-footer {
  padding: 1rem 1.5rem;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 0.75rem;
  background-color: #f8fafc;
}

.modal-close-btn {
  background: none;
  border: none;
  font-size: 1.25rem;
  cursor: pointer;
  color: var(--text-light);
}

.modal-close-btn:hover {
  color: var(--danger);
}

/* Toast Notifications */
.toast-container {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 200;
}

.toast {
  background: #ffffff;
  border-left: 4px solid var(--primary);
  box-shadow: var(--shadow-lg);
  padding: 0.85rem 1.25rem;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 0.88rem;
  font-weight: 500;
  animation: slideIn 0.3s ease;
  min-width: 280px;
}

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

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

/* Responsive adjustments */
@media (max-width: 1024px) {
  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .pos-layout {
    grid-template-columns: 1fr;
  }
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  .sidebar.mobile-open {
    transform: translateX(0);
  }
  .main-wrapper {
    margin-left: 0 !important;
    max-width: 100vw !important;
  }
  .kpi-grid {
    grid-template-columns: 1fr;
  }
}