/* ==========================================================================
   Retail POS & AR Master Files — Unified Design System (Batch A)
   Professional, production-grade styles for administrative & operational pages
   ========================================================================== */

:root {
  --app-font: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --app-font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;

  /* Color Palette */
  --app-bg: #f8fafc;
  --app-surface: #ffffff;
  --app-surface-subtle: #f1f5f9;
  --app-border: #e2e8f0;
  --app-border-strong: #cbd5e1;

  --app-text-main: #0f172a;
  --app-text-muted: #64748b;
  --app-text-light: #94a3b8;

  --app-primary: #2563eb;
  --app-primary-hover: #1d4ed8;
  --app-primary-subtle: #eff6ff;

  --app-success: #10b981;
  --app-success-subtle: #ecfdf5;

  --app-warning: #f59e0b;
  --app-warning-subtle: #fffbeb;

  --app-danger: #ef4444;
  --app-danger-subtle: #fef2f2;

  /* Sidebar Tokens */
  --app-sidebar-bg: #0f172a;
  --app-sidebar-surface: #1e293b;
  --app-sidebar-border: #334155;
  --app-sidebar-text: #94a3b8;
  --app-sidebar-text-hover: #f8fafc;
  --app-sidebar-active-bg: #2563eb;
  --app-sidebar-active-text: #ffffff;
  --app-sidebar-width: 250px;

  /* Topbar Tokens */
  --app-topbar-height: 58px;
  --app-topbar-bg: #ffffff;
  --app-topbar-border: #e2e8f0;

  /* Shadows */
  --app-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --app-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px -1px rgba(0, 0, 0, 0.1);
  --app-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.06);
}

/* Base resets for administrative pages */
body.has-app-sidebar {
  font-family: var(--app-font);
  background-color: var(--app-bg);
  color: var(--app-text-main);
  margin: 0;
  padding: 0;
  min-height: 100vh;
  min-height: 100dvh;
  padding-top: var(--app-topbar-height) !important;
}

@media (min-width: 992px) {
  body.has-app-sidebar {
    padding-left: var(--app-sidebar-width) !important;
  }
}

/* ==========================================================================
   SIDEBAR NAVIGATION
   ========================================================================== */

#app-sidebar {
  position: fixed;
  top: 0;
  bottom: 0;
  left: 0;
  width: var(--app-sidebar-width);
  background-color: var(--app-sidebar-bg);
  color: var(--app-sidebar-text);
  z-index: 1045;
  display: flex;
  flex-direction: column;
  transition: transform 0.25s ease-in-out;
  overflow: hidden;
  box-shadow: 2px 0 8px rgba(0, 0, 0, 0.15);
}

/* Sidebar Brand Header */
.app-sidebar-brand {
  height: var(--app-topbar-height);
  padding: 0 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-bottom: 1px solid var(--app-sidebar-border);
  background: #090d16;
  text-decoration: none;
  color: #ffffff;
  flex-shrink: 0;
}

.app-sidebar-brand:hover {
  color: #ffffff;
}

.app-sidebar-brand-badge {
  background: var(--app-primary);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.5rem;
  border-radius: 0.35rem;
  letter-spacing: 0.5px;
}

.app-sidebar-brand-title {
  font-size: 0.95rem;
  font-weight: 700;
  letter-spacing: -0.2px;
  line-height: 1.2;
}

.app-sidebar-brand-sub {
  font-size: 0.7rem;
  color: #64748b;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Sidebar Scrollable Nav */
.app-sidebar-scroll {
  flex: 1 1 auto;
  overflow-y: auto;
  overflow-x: hidden;
  padding: 1rem 0.75rem;
}

.app-sidebar-heading {
  font-size: 0.675rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.75px;
  color: #64748b;
  padding: 0.75rem 0.6rem 0.25rem;
  margin-top: 0.5rem;
}

.app-sidebar-heading:first-of-type {
  margin-top: 0;
  padding-top: 0;
}

.app-sidebar-nav {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
}

.app-sidebar-link {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.5rem 0.65rem;
  border-radius: 0.375rem;
  color: var(--app-sidebar-text);
  text-decoration: none;
  font-size: 0.85rem;
  font-weight: 500;
  transition: background-color 0.15s ease, color 0.15s ease;
  min-height: 38px;
}

.app-sidebar-link:hover {
  background-color: var(--app-sidebar-surface);
  color: var(--app-sidebar-text-hover);
}

.app-sidebar-link.active {
  background-color: var(--app-sidebar-active-bg);
  color: var(--app-sidebar-active-text);
  font-weight: 600;
  box-shadow: 0 1px 3px rgba(37, 99, 235, 0.4);
}

.app-sidebar-icon {
  width: 18px;
  height: 18px;
  flex-shrink: 0;
  opacity: 0.8;
}

.app-sidebar-link.active .app-sidebar-icon {
  opacity: 1;
}

/* Sidebar Footer User Card */
.app-sidebar-footer {
  flex-shrink: 0;
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--app-sidebar-border);
  background: #090d16;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.app-sidebar-user-info {
  min-width: 0;
}

.app-sidebar-user-name {
  color: #ffffff;
  font-size: 0.825rem;
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin: 0;
}

.app-sidebar-user-role {
  color: #64748b;
  font-size: 0.725rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  margin: 0;
}

.app-sidebar-logout-btn {
  background: transparent;
  border: 1px solid #475569;
  color: #cbd5e1;
  border-radius: 0.35rem;
  padding: 0.3rem 0.55rem;
  font-size: 0.75rem;
  cursor: pointer;
  transition: all 0.15s ease;
  flex-shrink: 0;
}

.app-sidebar-logout-btn:hover {
  background: rgba(239, 68, 68, 0.15);
  border-color: #ef4444;
  color: #fca5a5;
}

/* Mobile Sidebar Drawer State */
@media (max-width: 991.98px) {
  #app-sidebar {
    transform: translateX(-100%);
  }

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

  #app-sidebar-backdrop {
    position: fixed;
    inset: 0;
    background: rgba(15, 23, 42, 0.6);
    backdrop-filter: blur(2px);
    z-index: 1040;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.25s ease;
  }

  body.sidebar-open #app-sidebar-backdrop {
    opacity: 1;
    pointer-events: auto;
  }
}

/* ==========================================================================
   TOPBAR NAVIGATION
   ========================================================================== */

#app-topbar {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  height: var(--app-topbar-height);
  background-color: var(--app-topbar-bg);
  border-bottom: 1px solid var(--app-topbar-border);
  z-index: 1030;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  box-shadow: var(--app-shadow-sm);
  transition: left 0.25s ease;
}

@media (min-width: 992px) {
  #app-topbar {
    left: var(--app-sidebar-width);
  }
}

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

.app-topbar-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--app-border);
  border-radius: 0.375rem;
  padding: 0.4rem;
  color: var(--app-text-main);
  cursor: pointer;
  min-height: 38px;
  min-width: 38px;
}

.app-topbar-toggle:hover {
  background: var(--app-surface-subtle);
}

@media (min-width: 992px) {
  .app-topbar-toggle {
    display: none;
  }
}

.app-topbar-title {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--app-text-main);
  margin: 0;
  letter-spacing: -0.2px;
}

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

.app-topbar-role-badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.6rem;
  border-radius: 2rem;
  letter-spacing: 0.3px;
}

.app-topbar-logout-btn {
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.35rem 0.75rem;
  border-radius: 0.375rem;
  min-height: 36px;
}

/* ==========================================================================
   PAGE WRAPPERS & CONTAINERS
   ========================================================================== */

.app-page-container {
  padding: 1.5rem 1.25rem;
  max-width: 1400px;
  margin: 0 auto;
}

@media (max-width: 575.98px) {
  .app-page-container {
    padding: 1rem 0.75rem;
  }
}

/* Reusable Professional Card */
.app-card {
  background: var(--app-surface);
  border: 1px solid var(--app-border);
  border-radius: 0.5rem;
  box-shadow: var(--app-shadow-sm);
  overflow: hidden;
  margin-bottom: 1.25rem;
}

.app-card-header {
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--app-border);
  background: var(--app-surface);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.app-card-title {
  font-size: 1rem;
  font-weight: 700;
  margin: 0;
  color: var(--app-text-main);
}

.app-card-body {
  padding: 1.25rem;
}

/* Reusable Clean Data Table */
.app-table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}

.app-table {
  width: 100%;
  margin-bottom: 0;
  font-size: 0.875rem;
}

.app-table thead th {
  background: #f8fafc;
  color: var(--app-text-muted);
  font-weight: 600;
  font-size: 0.775rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-bottom: 1px solid var(--app-border-strong);
  padding: 0.65rem 0.85rem;
  white-space: nowrap;
}

.app-table tbody td {
  padding: 0.75rem 0.85rem;
  vertical-align: middle;
  border-bottom: 1px solid var(--app-border);
}

.app-table tbody tr:hover {
  background-color: #f1f5f9;
}

.app-table .num-cell {
  font-family: var(--app-font-mono);
  font-variant-numeric: tabular-nums;
}

/* ==========================================================================
   LOGIN PAGE STYLING
   ========================================================================== */

body.login-page {
  background-color: #0b0f19;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--app-font);
  padding: 1.25rem;
  margin: 0;
}

.login-container {
  width: 100%;
  max-width: 440px;
}

.login-card {
  background: #ffffff;
  border-radius: 0.75rem;
  box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.2);
  border: 1px solid #1e293b;
  overflow: hidden;
}

.login-header {
  background: #0f172a;
  padding: 2rem 1.75rem 1.75rem;
  text-align: center;
  color: #ffffff;
  border-bottom: 1px solid #1e293b;
}

.login-badge {
  display: inline-block;
  background: rgba(37, 99, 235, 0.25);
  border: 1px solid rgba(37, 99, 235, 0.6);
  color: #60a5fa;
  font-size: 0.725rem;
  font-weight: 700;
  letter-spacing: 0.75px;
  text-transform: uppercase;
  padding: 0.25rem 0.65rem;
  border-radius: 2rem;
  margin-bottom: 0.75rem;
}

.login-title {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.3px;
  margin-bottom: 0.35rem;
}

.login-subtitle {
  color: #94a3b8;
  font-size: 0.85rem;
  margin-bottom: 0;
}

.login-body {
  padding: 2rem 1.75rem;
}

.login-form-label {
  font-size: 0.825rem;
  font-weight: 600;
  color: var(--app-text-main);
  margin-bottom: 0.35rem;
}

.login-form-control {
  font-size: 0.95rem;
  padding: 0.65rem 0.85rem;
  border: 1.5px solid var(--app-border-strong);
  border-radius: 0.45rem;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

.login-form-control:focus {
  border-color: var(--app-primary);
  box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.18);
  outline: none;
}

.login-submit-btn {
  background: var(--app-primary);
  border: none;
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.75rem 1.25rem;
  border-radius: 0.45rem;
  min-height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  box-shadow: 0 2px 4px rgba(37, 99, 235, 0.3);
  transition: background-color 0.15s ease, transform 0.05s ease;
}

.login-submit-btn:hover {
  background: var(--app-primary-hover);
}

.login-submit-btn:active {
  transform: scale(0.99);
}

.login-footer-note {
  text-align: center;
  font-size: 0.75rem;
  color: var(--app-text-muted);
  margin-top: 1.25rem;
}

/* ==========================================================================
   INTERNAL MANAGEMENT PAGES (BATCH C UNIFIED STYLING)
   Scoped to body.has-app-sidebar so Cashier POS is 100% isolated
   ========================================================================== */

/* Main Container Layout */
body.has-app-sidebar .container,
body.has-app-sidebar main.container {
  max-width: 1360px;
  padding-left: 1.25rem;
  padding-right: 1.25rem;
  margin-top: 1.5rem !important;
  margin-bottom: 2rem !important;
}

@media (max-width: 575.98px) {
  body.has-app-sidebar .container,
  body.has-app-sidebar main.container {
    padding-left: 0.75rem;
    padding-right: 0.75rem;
    margin-top: 1rem !important;
  }
}

/* Header Sections on Management Pages */
body.has-app-sidebar #header-div,
body.has-app-sidebar .container > .d-flex.justify-content-between {
  margin-bottom: 1.25rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--app-border);
}

body.has-app-sidebar #header-text,
body.has-app-sidebar h1 {
  font-size: 1.35rem;
  font-weight: 800;
  letter-spacing: -0.3px;
  color: var(--app-text-main);
  margin: 0;
  text-transform: uppercase;
}

body.has-app-sidebar #btn-add,
body.has-app-sidebar #btn-add-card,
body.has-app-sidebar #btn-new-memo {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.45rem 1rem;
  border-radius: 0.375rem;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.05);
}

/* Data Tables & Containers */
body.has-app-sidebar #table-div,
body.has-app-sidebar #invoices,
body.has-app-sidebar #memos,
body.has-app-sidebar #cards,
body.has-app-sidebar #promotions,
body.has-app-sidebar #methods,
body.has-app-sidebar #assignments,
body.has-app-sidebar #report-content {
  background: var(--app-surface);
  border: 1px solid var(--app-border);
  border-radius: 0.5rem;
  box-shadow: var(--app-shadow-sm);
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  margin-top: 1rem;
  margin-bottom: 1.5rem;
}

body.has-app-sidebar .table {
  margin-bottom: 0;
  font-size: 0.875rem;
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
}

body.has-app-sidebar .table thead th {
  background-color: #f8fafc;
  color: #475569;
  font-weight: 700;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  border-top: none;
  border-bottom: 1px solid var(--app-border-strong);
  padding: 0.75rem 0.85rem;
  white-space: nowrap;
  vertical-align: middle;
}

body.has-app-sidebar .table tbody td {
  padding: 0.75rem 0.85rem;
  vertical-align: middle;
  border-bottom: 1px solid #f1f5f9;
  color: #1e293b;
}

body.has-app-sidebar .table tbody tr:last-child td {
  border-bottom: none;
}

body.has-app-sidebar .table-hover tbody tr:hover {
  background-color: #f8fafc;
}

body.has-app-sidebar .table-striped tbody tr:nth-of-type(odd) {
  background-color: #ffffff;
}

body.has-app-sidebar .table-striped tbody tr:nth-of-type(even) {
  background-color: #fafbfc;
}

/* Action Buttons inside Table Rows */
body.has-app-sidebar .btn-update,
body.has-app-sidebar .btn-delete,
body.has-app-sidebar .table .btn-sm {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.25rem 0.55rem;
  border-radius: 0.35rem;
  margin-right: 0.25rem;
  transition: all 0.15s ease;
  line-height: 1.3;
}

body.has-app-sidebar .btn-update,
body.has-app-sidebar .btn-success {
  background-color: #10b981;
  border-color: #10b981;
  color: #ffffff;
}

body.has-app-sidebar .btn-update:hover,
body.has-app-sidebar .btn-success:hover {
  background-color: #059669;
  border-color: #059669;
}

body.has-app-sidebar .btn-delete,
body.has-app-sidebar .btn-danger {
  background-color: #ef4444;
  border-color: #ef4444;
  color: #ffffff;
}

body.has-app-sidebar .btn-delete:hover,
body.has-app-sidebar .btn-danger:hover {
  background-color: #dc2626;
  border-color: #dc2626;
}

/* Status Badges */
body.has-app-sidebar .badge {
  font-weight: 600;
  padding: 0.3rem 0.55rem;
  border-radius: 0.35rem;
  font-size: 0.75rem;
}

/* Modal Dialog Modernization */
body.has-app-sidebar .modal-content {
  border: 1px solid var(--app-border);
  border-radius: 0.5rem;
  box-shadow: var(--app-shadow-md);
  overflow: hidden;
}

body.has-app-sidebar .modal-header {
  background-color: #0f172a !important;
  color: #ffffff !important;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid #1e293b;
}

body.has-app-sidebar .modal-header .modal-title,
body.has-app-sidebar .modal-header h5 {
  font-size: 1rem;
  font-weight: 700;
  margin: 0;
  color: #ffffff !important;
}

body.has-app-sidebar .modal-header .btn-close {
  filter: invert(1) grayscale(100%) brightness(200%);
  opacity: 0.8;
}

body.has-app-sidebar .modal-header .btn-close:hover {
  opacity: 1;
}

body.has-app-sidebar .modal-body {
  padding: 1.25rem;
  background-color: #ffffff;
}

body.has-app-sidebar .modal-footer {
  background-color: #f8fafc;
  border-top: 1px solid var(--app-border);
  padding: 0.85rem 1.25rem;
}

/* Form Controls & Labels */
body.has-app-sidebar .form-control,
body.has-app-sidebar .form-select {
  font-size: 0.875rem;
  border: 1px solid var(--app-border-strong);
  border-radius: 0.375rem;
  padding: 0.5rem 0.75rem;
  color: var(--app-text-main);
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}

body.has-app-sidebar .form-control:focus,
body.has-app-sidebar .form-select:focus {
  border-color: var(--app-primary);
  box-shadow: 0 0 0 0.2rem rgba(37, 99, 235, 0.15);
  outline: none;
}

body.has-app-sidebar .form-label {
  font-size: 0.8rem;
  font-weight: 600;
  color: #334155;
  margin-bottom: 0.25rem;
}

/* Generic Cards on Settings & Reports */
body.has-app-sidebar .card {
  border: 1px solid var(--app-border);
  border-radius: 0.5rem;
  box-shadow: var(--app-shadow-sm);
  background-color: var(--app-surface);
  overflow: hidden;
}

body.has-app-sidebar .card-header {
  background-color: #f8fafc;
  border-bottom: 1px solid var(--app-border);
  font-weight: 700;
  font-size: 0.925rem;
  color: var(--app-text-main);
  padding: 0.85rem 1.25rem;
}

/* Terminal Selection Workspace */
body.terminal-select-body {
  background-color: #0b0f19;
  min-height: 100vh;
  min-height: 100dvh;
  display: flex;
  flex-direction: column;
  font-family: var(--app-font);
  margin: 0;
}