/* ============================================================
   POS + IMS ERP - Premium UI Stylesheet
   Version: 1.0 | Modern Enterprise Design
   ============================================================ */

/* ============================================================
   CSS CUSTOM PROPERTIES (DESIGN TOKENS)
   ============================================================ */
:root {
  /* Primary Brand Colors */
  --primary:        #4361ee;
  --primary-dark:   #3a0ca3;
  --primary-light:  #4cc9f0;
  --secondary:      #7209b7;
  --accent:         #f72585;

  /* Status Colors */
  --success:        #2ec4b6;
  --warning:        #ff9f1c;
  --danger:         #e63946;
  --info:           #4cc9f0;

  /* Neutral Palette */
  --gray-50:        #f8f9fa;
  --gray-100:       #f1f3f5;
  --gray-200:       #e9ecef;
  --gray-300:       #dee2e6;
  --gray-400:       #ced4da;
  --gray-500:       #adb5bd;
  --gray-600:       #6c757d;
  --gray-700:       #495057;
  --gray-800:       #343a40;
  --gray-900:       #212529;

  /* Layout */
  --sidebar-width:     260px;
  --sidebar-collapsed: 70px;
  --topbar-height:     60px;
  --border-radius:     10px;
  --border-radius-sm:  6px;
  --border-radius-lg:  16px;

  /* Backgrounds */
  --bg-main:    #f0f2f5;
  --bg-card:    #ffffff;
  --bg-sidebar: #1a1d23;
  --bg-topbar:  #ffffff;

  /* Text */
  --text-primary:   #2d3748;
  --text-secondary: #718096;
  --text-muted:     #a0aec0;
  --text-light:     #ffffff;

  /* Borders */
  --border-color:   #e2e8f0;
  --border-focus:   #4361ee;

  /* Shadows */
  --shadow-sm:  0 1px 3px rgba(0,0,0,.08), 0 1px 2px rgba(0,0,0,.04);
  --shadow-md:  0 4px 12px rgba(0,0,0,.1);
  --shadow-lg:  0 10px 30px rgba(0,0,0,.12);
  --shadow-xl:  0 20px 50px rgba(0,0,0,.16);

  /* Transitions */
  --transition:     all .2s ease;
  --transition-md:  all .3s ease;
}

/* Dark Mode Variables */
[data-theme="dark"] {
  --bg-main:        #0f1117;
  --bg-card:        #1a1d23;
  --bg-sidebar:     #111317;
  --bg-topbar:      #1a1d23;
  --text-primary:   #e2e8f0;
  --text-secondary: #a0aec0;
  --border-color:   #2d3748;
  --gray-100:       #1a1d23;
  --gray-200:       #2d3748;
  --gray-50:        #1a1d23;
}

/* ============================================================
   RESET & BASE
   ============================================================ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 14px; scroll-behavior: smooth; }

body {
  font-family: 'Inter', 'Segoe UI', -apple-system, sans-serif;
  background-color: var(--bg-main);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

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

/* ============================================================
   SCROLLBAR STYLING
   ============================================================ */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--gray-300); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: var(--gray-400); }

/* ============================================================
   LAYOUT
   ============================================================ */
.wrapper {
  display: flex;
  min-height: 100vh;
}

/* ============================================================
   SIDEBAR
   ============================================================ */
#sidebar {
  width: var(--sidebar-width);
  min-height: 100vh;
  background: var(--bg-sidebar);
  position: fixed;
  top: 0;
  left: 0;
  z-index: 1000;
  transition: var(--transition-md);
  overflow: visible;
  display: flex;
  flex-direction: column;
}

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

.sidebar-brand {
  height: var(--topbar-height);
  display: flex;
  align-items: center;
  padding: 0 20px;
  border-bottom: 1px solid rgba(255,255,255,.06);
  flex-shrink: 0;
}

.sidebar-brand img { width: 32px; height: 32px; border-radius: 8px; }

.sidebar-brand .brand-text {
  margin-left: 12px;
  color: #fff;
  font-size: 1rem;
  font-weight: 700;
  white-space: nowrap;
  letter-spacing: -.3px;
}

.sidebar-brand .brand-sub {
  font-size: .65rem;
  color: var(--gray-500);
  display: block;
}

.sidebar-scroll {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 16px 0;
}

.sidebar-section-title {
  font-size: .65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.2px;
  color: var(--gray-500);
  padding: 12px 24px 6px;
  white-space: nowrap;
}

.sidebar-nav { list-style: none; }

.sidebar-nav .nav-item { position: relative; }

.sidebar-nav .nav-link {
  display: flex;
  align-items: center;
  padding: 10px 20px;
  color: #9ca3af;
  border-radius: 8px;
  margin: 1px 8px;
  transition: var(--transition);
  cursor: pointer;
  white-space: nowrap;
  font-size: .875rem;
}

.sidebar-nav .nav-link:hover {
  background: rgba(255,255,255,.07);
  color: #fff;
}

.sidebar-nav .nav-link.active {
  background: var(--primary);
  color: #fff;
  box-shadow: 0 4px 12px rgba(67,97,238,.4);
}

.sidebar-nav .nav-link .nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

.sidebar-nav .nav-link .nav-text { margin-left: 12px; flex: 1; }

.sidebar-nav .nav-link .badge {
  font-size: .65rem;
  padding: 2px 6px;
  border-radius: 10px;
  margin-left: auto;
}

/* Submenu */
.sidebar-nav .has-submenu > .nav-link { cursor: pointer; }
.sidebar-nav .has-submenu > .nav-link::after {
  content: '\f078';
  font-family: 'Font Awesome 6 Free';
  font-weight: 900;
  font-size: .7rem;
  margin-left: auto;
  transition: var(--transition);
}

.sidebar-nav .has-submenu.open > .nav-link::after { transform: rotate(180deg); }

.sidebar-submenu {
  list-style: none;
  display: none;
  padding: 4px 0;
}

.sidebar-submenu.show { display: block; }

.sidebar-submenu .nav-link {
  font-size: .82rem;
  padding: 8px 20px 8px 52px;
  color: #9ca3af;
}

.sidebar-submenu .nav-link.active {
  background: rgba(67,97,238,.2);
  color: var(--primary-light);
}

/* Collapsed sidebar */
#sidebar.collapsed .sidebar-section-title,
#sidebar.collapsed .nav-text,
#sidebar.collapsed .brand-text,
#sidebar.collapsed .badge,
#sidebar.collapsed .sidebar-submenu { display: none; }

#sidebar.collapsed .sidebar-nav .nav-link { padding: 12px; justify-content: center; margin: 2px 8px; }
#sidebar.collapsed .sidebar-nav .nav-link:hover .nav-text { display: block; }

/* ============================================================
   MAIN CONTENT AREA
   ============================================================ */
#main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  transition: var(--transition-md);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

#main-content.expanded { margin-left: var(--sidebar-collapsed); }

/* ============================================================
   TOPBAR
   ============================================================ */
#topbar {
  height: var(--topbar-height);
  background: var(--bg-topbar);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  padding: 0 24px;
  position: sticky;
  top: 0;
  z-index: 900;
  box-shadow: var(--shadow-sm);
  gap: 16px;
}

#topbar .topbar-toggle {
  width: 36px;
  height: 36px;
  border: none;
  background: transparent;
  cursor: pointer;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: var(--transition);
  font-size: 1.1rem;
}

#topbar .topbar-toggle:hover { background: var(--gray-100); color: var(--primary); }

.topbar-breadcrumb {
  flex: 1;
  font-size: .8rem;
  color: var(--text-muted);
}

.topbar-breadcrumb .breadcrumb { margin: 0; padding: 0; background: transparent; }
.topbar-breadcrumb .breadcrumb-item.active { color: var(--text-primary); font-weight: 600; }

.topbar-actions { display: flex; align-items: center; gap: 8px; }

.topbar-icon-btn {
  width: 36px;
  height: 36px;
  border: none;
  background: var(--gray-100);
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  cursor: pointer;
  transition: var(--transition);
  position: relative;
  font-size: .9rem;
}

.topbar-icon-btn:hover { background: var(--primary); color: #fff; }

.topbar-icon-btn .badge {
  position: absolute;
  top: -4px;
  right: -4px;
  font-size: .6rem;
  min-width: 16px;
  height: 16px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--danger);
  color: #fff;
  border: 2px solid var(--bg-topbar);
  padding: 0 3px;
}

.topbar-user {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 6px 12px;
  border-radius: 10px;
  cursor: pointer;
  transition: var(--transition);
}

.topbar-user:hover { background: var(--gray-100); }

.topbar-user .avatar {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  background: var(--primary);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: .85rem;
  flex-shrink: 0;
}

.topbar-user .user-info { line-height: 1.2; }
.topbar-user .user-name { font-size: .82rem; font-weight: 600; color: var(--text-primary); }
.topbar-user .user-role { font-size: .7rem; color: var(--text-muted); }

/* ============================================================
   PAGE CONTENT
   ============================================================ */
.page-content {
  flex: 1;
  padding: 24px;
  overflow-x: hidden;
}

.page-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.page-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--text-primary);
  letter-spacing: -.3px;
}

.page-subtitle {
  font-size: .8rem;
  color: var(--text-muted);
  margin-top: 2px;
}

/* ============================================================
   CARDS
   ============================================================ */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.card:hover { box-shadow: var(--shadow-md); }

.card-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: transparent;
  border-radius: var(--border-radius) var(--border-radius) 0 0;
}

.card-title {
  font-size: .95rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 0;
}

.card-body { padding: 20px; }

.card-footer {
  padding: 12px 20px;
  border-top: 1px solid var(--border-color);
  background: transparent;
  border-radius: 0 0 var(--border-radius) var(--border-radius);
}

/* ============================================================
   STAT / KPI CARDS
   ============================================================ */
.stat-card {
  background: var(--bg-card);
  border-radius: var(--border-radius);
  padding: 20px;
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-md);
  position: relative;
  overflow: hidden;
}

.stat-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.stat-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--card-accent, var(--primary));
}

.stat-card .stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.3rem;
  margin-bottom: 14px;
  background: var(--card-icon-bg, rgba(67,97,238,.1));
  color: var(--card-accent, var(--primary));
}

.stat-card .stat-value {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--text-primary);
  letter-spacing: -.5px;
  line-height: 1;
  margin-bottom: 4px;
}

.stat-card .stat-label {
  font-size: .75rem;
  color: var(--text-muted);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: .5px;
}

.stat-card .stat-change {
  font-size: .75rem;
  font-weight: 600;
  margin-top: 8px;
}

.stat-card .stat-change.up { color: var(--success); }
.stat-card .stat-change.down { color: var(--danger); }

/* Colored stat cards */
.stat-card.primary   { --card-accent: var(--primary);  --card-icon-bg: rgba(67,97,238,.12); }
.stat-card.success   { --card-accent: var(--success);  --card-icon-bg: rgba(46,196,182,.12); }
.stat-card.warning   { --card-accent: var(--warning);  --card-icon-bg: rgba(255,159,28,.12); }
.stat-card.danger    { --card-accent: var(--danger);   --card-icon-bg: rgba(230,57,70,.12); }
.stat-card.info      { --card-accent: var(--info);     --card-icon-bg: rgba(76,201,240,.12); }
.stat-card.secondary { --card-accent: var(--secondary);--card-icon-bg: rgba(114,9,183,.12); }

/* ============================================================
   BUTTONS
   ============================================================ */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  padding: 8px 18px;
  border-radius: var(--border-radius-sm);
  font-size: .85rem;
  font-weight: 600;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
  line-height: 1;
}

.btn:active { transform: scale(.97); }

.btn-primary   { background: var(--primary);  color: #fff; border-color: var(--primary); }
.btn-primary:hover { background: var(--primary-dark); border-color: var(--primary-dark); color: #fff; box-shadow: 0 4px 12px rgba(67,97,238,.35); }
.btn-success   { background: var(--success);  color: #fff; }
.btn-success:hover { background: #25a89e; color: #fff; box-shadow: 0 4px 12px rgba(46,196,182,.35); }
.btn-danger    { background: var(--danger);   color: #fff; }
.btn-danger:hover { background: #c92a37; color: #fff; }
.btn-warning   { background: var(--warning);  color: #fff; }
.btn-warning:hover { background: #e08b0e; color: #fff; }
.btn-info      { background: var(--info);     color: #fff; }
.btn-secondary { background: var(--gray-600); color: #fff; }
.btn-dark      { background: var(--gray-800); color: #fff; }

.btn-outline-primary { background: transparent; border-color: var(--primary); color: var(--primary); }
.btn-outline-primary:hover { background: var(--primary); color: #fff; }
.btn-outline-danger  { background: transparent; border-color: var(--danger);  color: var(--danger); }
.btn-outline-danger:hover  { background: var(--danger);  color: #fff; }

.btn-light  { background: var(--gray-100); color: var(--text-primary); border-color: var(--border-color); }
.btn-light:hover { background: var(--gray-200); }

.btn-sm   { padding: 5px 12px; font-size: .78rem; }
.btn-lg   { padding: 12px 28px; font-size: .95rem; border-radius: 10px; }
.btn-icon { padding: 8px; width: 36px; height: 36px; }
.btn-icon.btn-sm { width: 30px; height: 30px; padding: 4px; }

/* ============================================================
   FORMS
   ============================================================ */
.form-label {
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 6px;
  display: block;
  text-transform: uppercase;
  letter-spacing: .4px;
}

.form-control, .form-select {
  width: 100%;
  padding: 9px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius-sm);
  font-size: .875rem;
  color: var(--text-primary);
  transition: var(--transition);
  line-height: 1.5;
}

.form-control:focus, .form-select:focus {
  outline: none;
  border-color: var(--border-focus);
  box-shadow: 0 0 0 3px rgba(67,97,238,.12);
  background: var(--bg-card);
}

.form-control::placeholder { color: var(--text-muted); }

.form-control.is-invalid { border-color: var(--danger); }
.invalid-feedback { font-size: .78rem; color: var(--danger); margin-top: 4px; display: block; }

.input-group {
  display: flex;
  align-items: stretch;
}

.input-group .form-control { flex: 1; border-radius: 0; }
.input-group .form-control:first-child { border-radius: var(--border-radius-sm) 0 0 var(--border-radius-sm); }
.input-group .form-control:last-child  { border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0; }

.input-group-text {
  padding: 9px 14px;
  background: var(--gray-100);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  font-size: .875rem;
  display: flex;
  align-items: center;
}

.input-group .input-group-text:first-child {
  border-radius: var(--border-radius-sm) 0 0 var(--border-radius-sm);
  border-right: none;
}

.input-group .input-group-text:last-child {
  border-radius: 0 var(--border-radius-sm) var(--border-radius-sm) 0;
  border-left: none;
}

/* ============================================================
   TABLES
   ============================================================ */
.table-wrapper {
  overflow-x: auto;
  border-radius: var(--border-radius);
}

.table {
  width: 100%;
  border-collapse: collapse;
  font-size: .85rem;
}

.table thead th {
  background: var(--gray-50);
  color: var(--text-muted);
  font-weight: 700;
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .6px;
  padding: 10px 16px;
  border-bottom: 1px solid var(--border-color);
  white-space: nowrap;
}

.table tbody td {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border-color);
  color: var(--text-primary);
  vertical-align: middle;
}

.table tbody tr:last-child td { border-bottom: none; }

.table tbody tr:hover td { background: var(--gray-50); }

.table-hover tbody tr:hover { cursor: pointer; }

.table-striped tbody tr:nth-of-type(odd) td { background: var(--gray-50); }

/* ============================================================
   BADGES / STATUS
   ============================================================ */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px 10px;
  border-radius: 20px;
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .4px;
}

.badge-primary   { background: rgba(67,97,238,.12);  color: var(--primary); }
.badge-success   { background: rgba(46,196,182,.12); color: #1a9e96; }
.badge-warning   { background: rgba(255,159,28,.12); color: #c47a00; }
.badge-danger    { background: rgba(230,57,70,.12);  color: var(--danger); }
.badge-info      { background: rgba(76,201,240,.12); color: #1a90b3; }
.badge-secondary { background: var(--gray-200);      color: var(--gray-600); }
.badge-dark      { background: var(--gray-800);      color: #fff; }

/* ============================================================
   ALERTS
   ============================================================ */
.alert {
  padding: 12px 16px;
  border-radius: var(--border-radius-sm);
  margin-bottom: 16px;
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: .875rem;
  border: 1px solid transparent;
}

.alert-success  { background: rgba(46,196,182,.1);  border-color: rgba(46,196,182,.3);  color: #0d6e69; }
.alert-danger   { background: rgba(230,57,70,.1);   border-color: rgba(230,57,70,.3);   color: #a01020; }
.alert-warning  { background: rgba(255,159,28,.1);  border-color: rgba(255,159,28,.3);  color: #7a4c00; }
.alert-info     { background: rgba(76,201,240,.1);  border-color: rgba(76,201,240,.3);  color: #0a6583; }

/* ============================================================
   MODALS
   ============================================================ */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,.5);
  z-index: 1050;
  display: none;
  backdrop-filter: blur(4px);
}

.modal-backdrop.show { display: flex; align-items: center; justify-content: center; opacity: 1;}

.modal {
  background: var(--bg-card);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 600px;
  max-height: 90vh;
  display: flex;
  flex-direction: column;
  animation: modalSlideIn .2s ease;
  margin: 16px;
  position: relative;
}

.modal-lg  { max-width: 900px; }
.modal-xl  { max-width: 1200px; }
.modal-sm  { max-width: 400px; }
.modal-fs  { max-width: 98vw; max-height: 96vh; }

@keyframes modalSlideIn {
  from { transform: translateY(-20px); opacity: 0; }
  to   { transform: translateY(0);     opacity: 1; }
}

.modal-header {
  padding: 18px 24px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.modal-title { font-size: 1rem; font-weight: 700; color: var(--text-primary); }

.modal-close {
  width: 32px;
  height: 32px;
  border: none;
  background: var(--gray-100);
  border-radius: 8px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  font-size: 1.1rem;
  transition: var(--transition);
}

.modal-close:hover { background: var(--danger); color: #fff; }

.modal-body {
  padding: 24px;
  overflow-y: auto;
  flex: 1;
}

.modal-footer {
  padding: 16px 24px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex-shrink: 0;
}

/* ============================================================
   SEARCH BAR
   ============================================================ */
.search-bar {
  position: relative;
  min-width: 280px;
}

.search-bar input {
  padding-left: 38px;
  background: var(--gray-50);
  border-color: var(--border-color);
}

.search-bar .search-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: .85rem;
  pointer-events: none;
}

/* ============================================================
   TABS
   ============================================================ */
.nav-tabs {
  border-bottom: 2px solid var(--border-color);
  display: flex;
  gap: 4px;
  margin-bottom: 20px;
  list-style: none;
}

.nav-tabs .nav-link {
  padding: 10px 20px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  font-size: .85rem;
  font-weight: 600;
  cursor: pointer;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  transition: var(--transition);
  border-radius: 6px 6px 0 0;
  text-decoration: none;
  display: block;
}

.nav-tabs .nav-link:hover { color: var(--primary); background: var(--gray-50); }
.nav-tabs .nav-link.active { color: var(--primary); border-bottom-color: var(--primary); background: transparent; }

/* ============================================================
   DROPDOWN
   ============================================================ */
.dropdown { position: relative; display: inline-block; }

.dropdown-menu {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-lg);
  z-index: 1000;
  min-width: 180px;
  list-style: none;
  padding: 6px 0;
  display: none;
}

.dropdown-menu.show,
.custom-dropdown-menu.open { display: block; animation: fadeIn .15s ease; }

@keyframes fadeIn { from { opacity: 0; transform: translateY(-6px); } to { opacity: 1; transform: translateY(0); } }

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 16px;
  font-size: .85rem;
  color: var(--text-primary);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.dropdown-item:hover { background: var(--gray-50); color: var(--primary); }
.dropdown-item.text-danger:hover { background: rgba(230,57,70,.08); color: var(--danger); }

.dropdown-divider { border-top: 1px solid var(--border-color); margin: 4px 0; }

/* ============================================================
   ===== POS SCREEN STYLES =====
   ============================================================ */
.pos-wrapper {
  display: flex;
  height: 100vh;
  overflow: hidden;
  background: var(--bg-main);
}

/* POS Products Panel */
.pos-products-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-main);
}

.pos-search-bar {
  padding: 12px 16px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  display: flex;
  gap: 10px;
  align-items: center;
}

.pos-search-bar input {
  font-size: 1rem;
  padding: 10px 16px 10px 42px;
}

.pos-categories {
  display: flex;
  gap: 8px;
  padding: 10px 16px;
  background: var(--bg-card);
  border-bottom: 1px solid var(--border-color);
  overflow-x: auto;
  flex-shrink: 0;
}

.pos-cat-btn {
  padding: 6px 16px;
  border-radius: 20px;
  border: 1px solid var(--border-color);
  background: transparent;
  color: var(--text-secondary);
  font-size: .82rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  white-space: nowrap;
  flex-shrink: 0;
}

.pos-cat-btn:hover, .pos-cat-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.pos-products-grid {
  flex: 1;
  overflow-y: auto;
  padding: 12px;
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 10px;
  align-content: start;
}

.pos-product-card {
  background: var(--bg-card);
  border: 1.5px solid var(--border-color);
  border-radius: 10px;
  padding: 12px;
  cursor: pointer;
  transition: var(--transition);
  text-align: center;
  position: relative;
  overflow: hidden;
  user-select: none;
  touch-action: manipulation;
}

.pos-product-card:hover {
  border-color: var(--primary);
  box-shadow: 0 4px 16px rgba(67,97,238,.2);
  transform: translateY(-2px);
}

.pos-product-card:active { transform: scale(.96); }

.pos-product-card img {
  width: 60px;
  height: 60px;
  object-fit: cover;
  border-radius: 8px;
  margin-bottom: 8px;
}

.pos-product-card .product-icon {
  width: 60px;
  height: 60px;
  border-radius: 8px;
  background: var(--gray-100);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin: 0 auto 8px;
  color: var(--text-muted);
}

.pos-product-card .product-name {
  font-size: .8rem;
  font-weight: 600;
  color: var(--text-primary);
  line-height: 1.3;
  margin-bottom: 4px;
  overflow: hidden;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
}

.pos-product-card .product-price {
  font-size: .9rem;
  font-weight: 800;
  color: var(--primary);
}

.pos-product-card .product-stock {
  font-size: .68rem;
  color: var(--text-muted);
  margin-top: 2px;
}

.pos-product-card .stock-low { color: var(--danger); }
.pos-product-card .out-of-stock { opacity: .5; pointer-events: none; }

/* POS Cart Panel */
.pos-cart-panel {
  width: 400px;
  min-width: 360px;
  display: flex;
  flex-direction: column;
  background: var(--bg-card);
  border-left: 1px solid var(--border-color);
  //height: 100vh;
  flex-shrink: 0;
}

.pos-cart-header {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  gap: 10px;
  flex-shrink: 0;
}

.pos-cart-header h6 {
  flex: 1;
  font-size: .95rem;
  font-weight: 700;
  margin: 0;
}

.pos-cart-items {
  flex: 1;
  overflow-y: auto;
  padding: 8px 12px;
}

.pos-cart-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 10px;
  background: var(--gray-50);
  border-radius: 8px;
  margin-bottom: 6px;
  transition: var(--transition);
}

.pos-cart-item:hover { background: var(--gray-100); }

.pos-cart-item .item-info { flex: 1; min-width: 0; }
.pos-cart-item .item-name { font-size: .82rem; font-weight: 600; color: var(--text-primary); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.pos-cart-item .item-price { font-size: .75rem; color: var(--text-muted); }

.pos-cart-item .item-qty-ctrl {
  display: flex;
  align-items: center;
  gap: 6px;
}

.pos-cart-item .qty-btn {
  width: 26px;
  height: 26px;
  border: 1px solid var(--border-color);
  background: var(--bg-card);
  border-radius: 6px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .9rem;
  transition: var(--transition);
  color: var(--text-primary);
}

.pos-cart-item .qty-btn:hover { background: var(--primary); border-color: var(--primary); color: #fff; }

.pos-cart-item .qty-input {
  width: 44px;
  text-align: center;
  font-size: .85rem;
  font-weight: 700;
  border: 1px solid var(--border-color);
  border-radius: 6px;
  padding: 3px;
}

.pos-cart-item .item-total {
  font-size: .9rem;
  font-weight: 700;
  color: var(--text-primary);
  min-width: 65px;
  text-align: right;
}

.pos-cart-item .remove-btn {
  width: 24px;
  height: 24px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: .8rem;
  transition: var(--transition);
}

.pos-cart-item .remove-btn:hover { background: var(--danger); color: #fff; }

/* POS Cart Footer */
.pos-cart-footer {
  flex-shrink: 0;
  border-top: 1px solid var(--border-color);
}

.pos-totals { padding: 12px 16px; }

.pos-total-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 4px 0;
  font-size: .85rem;
  color: var(--text-secondary);
}

.pos-total-row.grand-total {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--text-primary);
  border-top: 1px solid var(--border-color);
  margin-top: 8px;
  padding-top: 12px;
}

.pos-actions {
  padding: 12px 16px;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  border-top: 1px solid var(--border-color);
}

.pos-pay-btn {
  grid-column: 1 / -1;
  padding: 14px;
  font-size: 1rem;
  font-weight: 800;
  border-radius: 10px;
  letter-spacing: .3px;
}

.pos-numpad {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 6px;
  padding: 10px 16px;
  border-top: 1px solid var(--border-color);
}

.numpad-btn {
  padding: 14px;
  background: var(--gray-100);
  border: none;
  border-radius: 8px;
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  color: var(--text-primary);
}

.numpad-btn:hover { background: var(--primary); color: #fff; }
.numpad-btn:active { transform: scale(.93); }
.numpad-btn.clear { background: rgba(230,57,70,.1); color: var(--danger); }
.numpad-btn.enter { background: var(--success); color: #fff; }

/* ============================================================
   OFFLINE INDICATOR
   ============================================================ */
.offline-banner {
  display: none;
  background: var(--danger);
  color: #fff;
  text-align: center;
  padding: 8px 16px;
  font-size: .82rem;
  font-weight: 600;
  gap: 8px;
  align-items: center;
  justify-content: center;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 9999;
}

.offline-banner.show { display: flex; }

/* ============================================================
   LOADING SPINNER
   ============================================================ */
.spinner {
  width: 36px;
  height: 36px;
  border: 3px solid var(--border-color);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin .7s linear infinite;
}

.spinner-sm { width: 20px; height: 20px; border-width: 2px; }

@keyframes spin { to { transform: rotate(360deg); } }

.loading-overlay {
  position: fixed;
  inset: 0;
  background: rgba(255,255,255,.8);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9998;
  backdrop-filter: blur(2px);
}

[data-theme="dark"] .loading-overlay { background: rgba(0,0,0,.6); }

/* ============================================================
   TOAST NOTIFICATIONS
   ============================================================ */
.toast-container {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 9990;
  display: flex;
  flex-direction: column;
  gap: 8px;
  max-width: 360px;
}

.toast {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 10px;
  padding: 14px 16px;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: flex-start;
  gap: 12px;
  animation: toastSlideIn .25s ease;
  border-left: 4px solid var(--primary);
}

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

@keyframes toastSlideIn { from { opacity: 0; transform: translateX(30px); } to { opacity: 1; transform: translateX(0); } }

.toast-icon { font-size: 1.1rem; flex-shrink: 0; margin-top: 1px; }
.toast.toast-success .toast-icon { color: var(--success); }
.toast.toast-error   .toast-icon { color: var(--danger); }
.toast.toast-warning .toast-icon { color: var(--warning); }
.toast-content { flex: 1; }
.toast-title   { font-size: .85rem; font-weight: 700; color: var(--text-primary); }
.toast-message { font-size: .78rem; color: var(--text-muted); margin-top: 2px; }
.toast-close { background: none; border: none; color: var(--text-muted); cursor: pointer; font-size: 1rem; padding: 0; }

/* ============================================================
   CHARTS
   ============================================================ */
.chart-container { position: relative; }

/* ============================================================
   PRINT STYLES
   ============================================================ */
@media print {
  #sidebar, #topbar, .no-print { display: none !important; }
  #main-content { margin-left: 0 !important; }
  .page-content { padding: 0 !important; }
  body { background: #fff !important; }
  .card { box-shadow: none !important; border: 1px solid #ddd !important; }
}

/* ============================================================
   RESPONSIVE DESIGN
   ============================================================ */
@media (max-width: 991.98px) {
  #sidebar {
    transform: translateX(-100%);
    width: var(--sidebar-width) !important;
  }

  #sidebar.mobile-open { transform: translateX(0); }

  #main-content { margin-left: 0 !important; }

  .pos-wrapper { flex-direction: column; }
  .pos-cart-panel { width: 100%; min-width: 100%; height: 50vh; border-left: none; border-top: 1px solid var(--border-color); }
  .pos-products-panel { height: 50vh; }
  .pos-products-grid { grid-template-columns: repeat(auto-fill, minmax(110px, 1fr)); }
}

@media (max-width: 767.98px) {
  .page-content { padding: 16px; }
  .pos-products-grid { grid-template-columns: repeat(auto-fill, minmax(100px, 1fr)); gap: 8px; }
  .pos-product-card { padding: 8px; }
  .pos-product-card img, .pos-product-card .product-icon { width: 48px; height: 48px; }
  .modal { max-width: 100%; margin: 8px; border-radius: var(--border-radius); }
  .stat-card .stat-value { font-size: 1.3rem; }
}

/* Touch targets for tablets & touchscreens */
@media (pointer: coarse) {
  .btn { min-height: 44px; padding: 10px 20px; }
  .pos-product-card { min-height: 110px; }
  .numpad-btn { min-height: 50px; }
  .qty-btn { width: 34px !important; height: 34px !important; }
  .table tbody td { padding: 14px 16px; }
}

/* ============================================================
   UTILITIES
   ============================================================ */
.text-primary-color { color: var(--primary) !important; }
.text-success-color { color: var(--success) !important; }
.text-danger-color  { color: var(--danger)  !important; }
.text-warning-color { color: var(--warning) !important; }
.text-muted-color   { color: var(--text-muted) !important; }

.bg-primary-soft  { background: rgba(67,97,238,.08) !important; }
.bg-success-soft  { background: rgba(46,196,182,.08) !important; }
.bg-danger-soft   { background: rgba(230,57,70,.08) !important; }
.bg-warning-soft  { background: rgba(255,159,28,.08) !important; }

.fw-bold   { font-weight: 700 !important; }
.fw-semibold { font-weight: 600 !important; }

.rounded-full { border-radius: 50% !important; }

.cursor-pointer { cursor: pointer; }

.gap-2 { gap: 8px; }
.gap-3 { gap: 12px; }

.d-flex     { display: flex !important; }
.align-center { align-items: center !important; }
.justify-between { justify-content: space-between !important; }
.flex-1     { flex: 1 !important; }
.flex-wrap  { flex-wrap: wrap !important; }

.w-100 { width: 100% !important; }

.mb-0 { margin-bottom: 0 !important; }
.mb-1 { margin-bottom: 4px !important; }
.mb-2 { margin-bottom: 8px !important; }
.mb-3 { margin-bottom: 16px !important; }
.mb-4 { margin-bottom: 24px !important; }
.mb-5 { margin-bottom: 32px !important; }

.mt-1 { margin-top: 4px !important; }
.mt-2 { margin-top: 8px !important; }
.mt-3 { margin-top: 16px !important; }
.mt-4 { margin-top: 24px !important; }

.p-0 { padding: 0 !important; }
.p-2 { padding: 8px !important; }
.p-3 { padding: 16px !important; }
.p-4 { padding: 24px !important; }

.hidden    { display: none !important; }
.invisible { visibility: hidden !important; }

.overflow-hidden { overflow: hidden !important; }
.text-ellipsis  { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ============================================================
   ANIMATIONS
   ============================================================ */
.fade-in { animation: fadeIn .3s ease; }
.slide-up { animation: slideUp .3s ease; }

@keyframes slideUp { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: translateY(0); } }

/* ============================================================
   DARK MODE OVERRIDES
   ============================================================ */
[data-theme="dark"] .table thead th { background: #22262e; }
[data-theme="dark"] .table tbody tr:hover td { background: rgba(255,255,255,.03); }
[data-theme="dark"] .table-striped tbody tr:nth-of-type(odd) td { background: rgba(255,255,255,.02); }
[data-theme="dark"] .form-control, [data-theme="dark"] .form-select { background: #22262e; border-color: var(--border-color); color: var(--text-primary); }
[data-theme="dark"] .input-group-text { background: #22262e; border-color: var(--border-color); }
[data-theme="dark"] .pos-cat-btn { border-color: var(--border-color); color: var(--text-secondary); }
[data-theme="dark"] .pos-product-card { background: #22262e; border-color: var(--border-color); }
[data-theme="dark"] .numpad-btn { background: #22262e; }
[data-theme="dark"] .pos-cart-item { background: #22262e; }
[data-theme="dark"] .stat-card { background: var(--bg-card); }
[data-theme="dark"] .sidebar-submenu .nav-link { color: #9ca3af; }