/**
 * Global Modern Modal Styles
 * Usage: Add class "modal-modern" to any .modal element
 * Works with Bootstrap 4 + AdminLTE 3
 */

/* ============================================
   CSS VARIABLES (can override per-modal)
   ============================================ */
.modal-modern {
  --modal-bg: #ffffff;
  --modal-surface: #f8fafc;
  --modal-border: #e2e8f0;
  --modal-border-focus: #3b82f6;
  --modal-text: #0f172a;
  --modal-text-secondary: #475569;
  --modal-text-muted: #94a3b8;
  --modal-primary: #3b82f6;
  --modal-primary-hover: #2563eb;
  --modal-success: #10b981;
  --modal-danger: #ef4444;
  --modal-warning: #f59e0b;
  --modal-radius: 0.5rem;
  --modal-radius-lg: 0.75rem;
  --modal-font-sm: 0.75rem;
  --modal-font-base: 0.875rem;
  --modal-font-lg: 1rem;
}

/* ============================================
   MODAL STRUCTURE
   ============================================ */
.modal-modern .modal-content {
  border: none;
  border-radius: var(--modal-radius-lg);
  overflow: hidden;
  box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.modal-modern .modal-header {
  background: var(--modal-bg);
  border-bottom: 1px solid var(--modal-border);
  padding: 1rem 1.5rem;
}

.modal-modern .modal-title {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--modal-text);
}

.modal-modern .modal-body {
  background: var(--modal-surface);
  padding: 1.5rem;
  max-height: calc(100vh - 200px);
  overflow-y: auto;
}

.modal-modern .modal-footer {
  background: var(--modal-bg);
  border-top: 1px solid var(--modal-border);
  padding: 1rem 1.5rem;
}

.modal-modern .close {
  opacity: 0.5;
  transition: opacity 0.15s;
}

.modal-modern .close:hover {
  opacity: 1;
}

/* ============================================
   MODAL SIZES (use with .modal-dialog)
   ============================================ */
.modal-modern .modal-dialog.modal-xl {
  max-width: 1100px;
}

.modal-modern .modal-dialog.modal-wide {
  max-width: 900px;
}

/* ============================================
   SECTIONS (card-like containers)
   ============================================ */
.modal-modern .modal-section {
  background: var(--modal-bg);
  border: 1px solid var(--modal-border);
  border-radius: var(--modal-radius-lg);
  padding: 1.25rem;
  margin-bottom: 1rem;
}

.modal-modern .modal-section:last-child {
  margin-bottom: 0;
}

.modal-modern .section-title {
  font-size: var(--modal-font-base);
  font-weight: 600;
  color: var(--modal-text);
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
}

.modal-modern .section-title i {
  color: var(--modal-text-secondary);
}

.modal-modern .section-subtitle {
  font-size: var(--modal-font-sm);
  font-weight: 600;
  color: var(--modal-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 0.75rem;
}

/* ============================================
   FORM CONTROLS (enhances Bootstrap)
   ============================================ */
.modal-modern .form-group-modern {
  margin-bottom: 0.875rem;
}

.modal-modern .form-label-modern {
  display: block;
  font-size: var(--modal-font-base);
  font-weight: 500;
  color: var(--modal-text-secondary);
  margin-bottom: 0.5rem;
}

.modal-modern .form-control {
  font-size: var(--modal-font-base);
  border-color: var(--modal-border);
  border-radius: var(--modal-radius);
}

.modal-modern .form-control:focus {
  border-color: var(--modal-border-focus);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.15);
}

.modal-modern .form-control-sm {
  font-size: var(--modal-font-sm);
}

/* Input groups */
.modal-modern .input-group .form-control {
  border-radius: var(--modal-radius) 0 0 var(--modal-radius);
}

.modal-modern .input-group .form-control:last-child,
.modal-modern .input-group select:last-child {
  border-radius: 0 var(--modal-radius) var(--modal-radius) 0;
}

/* ============================================
   SELECT2 (enhances plugin)
   ============================================ */
.modal-modern .select2-container {
  width: 100% !important;
}

.modal-modern .select2-container--default .select2-selection--single {
  border-color: var(--modal-border);
  border-radius: var(--modal-radius);
  height: calc(1.5em + 0.75rem + 2px);
}

.modal-modern .select2-container--default .select2-selection--single .select2-selection__rendered {
  line-height: calc(1.5em + 0.75rem);
}

.modal-modern .select2-container--default .select2-selection--single .select2-selection__arrow {
  height: calc(1.5em + 0.75rem);
}

.modal-modern .select2-container--default.select2-container--focus .select2-selection--single {
  border-color: var(--modal-border-focus);
  box-shadow: 0 0 0 2px rgba(59, 130, 246, 0.15);
}

/* ============================================
   BUTTONS
   ============================================ */
.modal-modern .btn-modern {
  padding: 0.5rem 1rem;
  font-size: var(--modal-font-base);
  font-weight: 500;
  border-radius: var(--modal-radius);
  cursor: pointer;
  transition: all 0.15s ease;
  border: none;
}

.modal-modern .btn-modern.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: var(--modal-font-sm);
}

.modal-modern .btn-modern-primary {
  color: #fff;
  background: var(--modal-primary);
}

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

.modal-modern .btn-modern-secondary {
  color: var(--modal-text-secondary);
  background: transparent;
  border: 1px solid var(--modal-border);
}

.modal-modern .btn-modern-secondary:hover {
  background: #f1f5f9;
  color: var(--modal-text);
}

.modal-modern .btn-modern-success {
  color: #fff;
  background: var(--modal-success);
}

.modal-modern .btn-modern-success:hover {
  background: #059669;
  color: #fff;
}

.modal-modern .btn-modern-danger {
  color: #fff;
  background: var(--modal-danger);
}

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

/* ============================================
   TOGGLE SWITCH
   ============================================ */
.modal-modern .section-header-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-modern .toggle-switch {
  position: relative;
  display: inline-block;
  cursor: pointer;
}

.modal-modern .toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}

.modal-modern .toggle-slider {
  display: block;
  width: 44px;
  height: 24px;
  background: #cbd5e1;
  border-radius: 12px;
  transition: background 0.2s ease;
}

.modal-modern .toggle-slider::before {
  content: '';
  position: absolute;
  top: 2px;
  left: 2px;
  width: 20px;
  height: 20px;
  background: #fff;
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0,0,0,0.2);
  transition: transform 0.2s ease;
}

.modal-modern .toggle-switch input:checked + .toggle-slider {
  background: var(--modal-success);
}

.modal-modern .toggle-switch input:checked + .toggle-slider::before {
  transform: translateX(20px);
}

/* ============================================
   PRICING CARDS
   ============================================ */
.modal-modern .pricing-card {
  border: 1px solid var(--modal-border);
  border-radius: var(--modal-radius);
  overflow: hidden;
  background: var(--modal-bg);
}

.modal-modern .pricing-card-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  font-size: var(--modal-font-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.modal-modern .pricing-card-header i {
  font-size: var(--modal-font-sm);
}

.modal-modern .pricing-card-sell .pricing-card-header {
  background: linear-gradient(135deg, #dcfce7 0%, #bbf7d0 100%);
  color: #166534;
  border-bottom: 1px solid #86efac;
}

.modal-modern .pricing-card-buy .pricing-card-header {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  color: #92400e;
  border-bottom: 1px solid #fcd34d;
}

.modal-modern .pricing-card-body {
  padding: 1rem;
}

.modal-modern .pricing-card-body .form-label-modern {
  font-size: var(--modal-font-sm);
  margin-bottom: 0.375rem;
}

/* ============================================
   UPLOAD ZONE
   ============================================ */
.modal-modern .upload-zone {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  border: 2px dashed var(--modal-border);
  border-radius: var(--modal-radius-lg);
  background: var(--modal-surface);
  cursor: pointer;
  transition: all 0.15s ease;
  text-align: center;
}

.modal-modern .upload-zone:hover {
  border-color: var(--modal-primary);
  background: #eff6ff;
}

.modal-modern .upload-zone i {
  font-size: 2rem;
  color: var(--modal-text-muted);
  margin-bottom: 0.5rem;
}

.modal-modern .upload-zone p {
  margin: 0;
  font-size: var(--modal-font-base);
  color: var(--modal-text-secondary);
}

.modal-modern .upload-zone span {
  font-size: var(--modal-font-sm);
  color: var(--modal-text-muted);
}

/* ============================================
   DYNAMIC ROWS (grades, items, etc.)
   ============================================ */
.modal-modern .dynamic-card {
  background: var(--modal-bg);
  border: 1px solid var(--modal-border);
  border-radius: var(--modal-radius);
  margin-bottom: 0.5rem;
}

.modal-modern .dynamic-card:last-child {
  margin-bottom: 0;
}

.modal-modern .dynamic-card:hover {
  border-color: #cbd5e1;
}

.modal-modern .dynamic-card-body {
  padding: 0;
}

.modal-modern .dynamic-card-row {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  border-bottom: 1px solid #f1f5f9;
}

.modal-modern .dynamic-card-row:last-child {
  border-bottom: none;
}

.modal-modern .dynamic-card-header {
  background: #f8fafc;
}

.modal-modern .dynamic-card-header .select2-container {
  flex: 1;
}

.modal-modern .dynamic-card-remove {
  flex: 0 0 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border: none;
  background: transparent;
  color: var(--modal-text-muted);
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.modal-modern .dynamic-card-remove:hover {
  background: #fef2f2;
  color: var(--modal-danger);
}

.modal-modern .dynamic-card-label {
  flex: 0 0 55px;
  font-size: var(--modal-font-sm);
  font-weight: 600;
  text-transform: uppercase;
  white-space: nowrap;
}

.modal-modern .dynamic-card-label-success {
  color: #16a34a;
}

.modal-modern .dynamic-card-label-warning {
  color: #d97706;
}

.modal-modern .dynamic-card-row select.form-control {
  flex: 0 0 90px;
  width: 90px;
}

.modal-modern .dynamic-card-row input.form-control {
  flex: 0 0 80px;
  width: 80px;
}

/* ============================================
   EMPTY STATE
   ============================================ */
.modal-modern .empty-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  text-align: center;
}

.modal-modern .empty-state i {
  font-size: 2.5rem;
  color: #cbd5e1;
  margin-bottom: 1rem;
}

.modal-modern .empty-state p {
  margin: 0;
  font-size: var(--modal-font-base);
  font-weight: 500;
  color: var(--modal-text-secondary);
}

.modal-modern .empty-state span {
  font-size: var(--modal-font-sm);
  color: var(--modal-text-muted);
  margin-top: 0.25rem;
}

/* ============================================
   TABLES INSIDE MODAL
   ============================================ */
.modal-modern .table {
  font-size: var(--modal-font-base);
}

.modal-modern .table thead th {
  background: #f8fafc;
  border-bottom: 2px solid var(--modal-border);
  font-weight: 600;
  color: var(--modal-text-secondary);
  font-size: var(--modal-font-sm);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.modal-modern .table td {
  vertical-align: middle;
}

/* ============================================
   TABS INSIDE MODAL
   ============================================ */
.modal-modern .nav-tabs {
  border-bottom: 2px solid var(--modal-border);
}

.modal-modern .nav-tabs .nav-link {
  border: none;
  border-bottom: 2px solid transparent;
  margin-bottom: -2px;
  color: var(--modal-text-secondary);
  font-weight: 500;
  padding: 0.75rem 1rem;
  transition: all 0.15s;
}

.modal-modern .nav-tabs .nav-link:hover {
  color: var(--modal-text);
  border-color: transparent;
}

.modal-modern .nav-tabs .nav-link.active {
  color: var(--modal-primary);
  border-bottom-color: var(--modal-primary);
  background: transparent;
}

/* ============================================
   RESPONSIVE
   ============================================ */
@media (max-width: 767.98px) {
  .modal-modern .modal-body {
    padding: 1rem;
    max-height: calc(100vh - 150px);
  }

  .modal-modern .modal-section {
    padding: 1rem;
  }

  .modal-modern .dynamic-card-row {
    flex-wrap: wrap;
  }

  .modal-modern .dynamic-card-row select.form-control,
  .modal-modern .dynamic-card-row input.form-control {
    flex: 1 1 auto;
    width: auto;
    min-width: 80px;
  }

  .modal-modern .pricing-card {
    margin-bottom: 1rem;
  }
}

/* ============================================
   CUSTOMER/SUPPLIER CARDS
   ============================================ */
.modal-modern .customer-supplier-cards {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.modal-modern .cs-card {
  background: var(--modal-bg);
  border: 1px solid var(--modal-border);
  border-radius: var(--modal-radius);
  overflow: hidden;
}

.modal-modern .cs-card:hover {
  border-color: #cbd5e1;
}

.modal-modern .cs-card-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: #f8fafc;
  border-bottom: 1px solid var(--modal-border);
}

.modal-modern .cs-card-number {
  flex: 0 0 24px;
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--modal-primary);
  color: #fff;
  font-size: 0.7rem;
  font-weight: 600;
  border-radius: 50%;
}

.modal-modern .cs-card-header .select2-container {
  flex: 1;
}

.modal-modern .cs-card-remove {
  flex: 0 0 28px;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  background: transparent;
  color: var(--modal-text-muted);
  border-radius: 4px;
  cursor: pointer;
  transition: all 0.15s ease;
}

.modal-modern .cs-card-remove:hover {
  background: #fef2f2;
  color: var(--modal-danger);
}

.modal-modern .cs-card-body {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 0.5rem;
  padding: 0.75rem;
}

.modal-modern .cs-card-field {
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.modal-modern .cs-card-field label {
  font-size: 0.7rem;
  font-weight: 600;
  color: var(--modal-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  margin: 0;
}

.modal-modern .cs-card-field .form-control {
  font-size: var(--modal-font-sm);
}

.modal-modern .cs-card-field .form-control[readonly] {
  background: #f1f5f9;
}

/* Tablet responsive */
@media (max-width: 991.98px) {
  .modal-modern .cs-card-body {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Mobile responsive */
@media (max-width: 575.98px) {
  .modal-modern .cs-card-body {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .modal-modern .cs-card-field:last-child {
    grid-column: span 2;
  }
}