:root {
  --app-bg: var(--kt-ai-bg, #0f1218);
  --app-card: var(--kt-ai-card-bg, #1a1d24);
  --app-hover: var(--kt-ai-bg-soft, #252830);
  --app-text: var(--kt-ai-fg, #f4f4f5);
  --app-text-muted: var(--kt-ai-fg-muted, #a1a1aa);
  --app-border: var(--kt-ai-border, #2d3038);
  --app-primary: var(--kt-ai-primary, #00b8cc);
  --app-danger: var(--kt-ai-danger, #dc3545);
  
  --radius: var(--kt-ai-radius-xl, 12px);
  --shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  font-family: var(--kt-ai-font-sans);
  background: var(--app-bg);
  color: var(--app-text);
  line-height: 1.6;
}

.app-container {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 260px;
  background: var(--app-card);
  border-right: 1px solid var(--app-border);
  padding: 24px 0;
  position: fixed;
  height: 100vh;
  overflow-y: auto;
  z-index: 100;
}

.sidebar-header {
  padding: 0 24px 24px;
  border-bottom: 1px solid var(--app-border);
}

.logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--app-primary);
}

.sidebar-nav {
  padding: 16px 0;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  padding: 12px 24px;
  background: none;
  border: none;
  color: var(--app-text-muted);
  font-size: 14px;
  cursor: pointer;
  transition: all 0.2s;
  text-align: left;
}

.nav-item:hover {
  background: var(--app-hover);
  color: var(--app-text);
}

.nav-item.active {
  background: rgba(0, 184, 204, 0.1);
  color: var(--app-primary);
  border-right: 3px solid var(--app-primary);
}

.nav-icon {
  font-size: 18px;
}

/* Main content */
.main-content {
  margin-left: 260px;
  flex: 1;
  padding: 32px;
  min-width: 0;
}

.screen {
  display: none;
}

.screen.active {
  display: block;
}

.screen-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 32px;
}

.screen-header h2 {
  font-size: var(--kt-ai-text-2xl);
  font-weight: var(--kt-ai-weight-bold);
}

/* KPI Cards */
.kpi-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 20px;
  margin-bottom: 32px;
}

.kpi-card {
  background: var(--app-card);
  border: 1px solid var(--app-border);
  border-radius: var(--radius);
  padding: 24px;
  text-align: center;
  transition: transform 0.2s;
}

.kpi-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

.kpi-value {
  font-size: 36px;
  font-weight: 700;
  color: var(--app-primary);
  margin-bottom: 8px;
}

.kpi-label {
  font-size: 13px;
  color: var(--app-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

/* Dashboard grid */
.dashboard-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-bottom: 24px;
}

@media (max-width: 1200px) {
  .dashboard-grid {
    grid-template-columns: 1fr;
  }
}

/* Cards */
.card {
  background: var(--app-card);
  border: 1px solid var(--app-border);
  border-radius: var(--radius);
  padding: 24px;
  margin-bottom: 24px;
}

.card h3 {
  font-size: 18px;
  font-weight: 600;
  margin-bottom: 20px;
  color: var(--app-text);
}

.chart-card {
  background: var(--app-card);
  border: 1px solid var(--app-border);
  border-radius: var(--radius);
  padding: 24px;
}

.chart-container {
  height: 300px;
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Tables */
.table-container {
  overflow-x: auto;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
}

.data-table th,
.data-table td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.data-table th {
  background: var(--app-hover);
  color: var(--app-text-muted);
  font-weight: 600;
  text-transform: uppercase;
  font-size: 12px;
  letter-spacing: 0.5px;
  position: sticky;
  top: 0;
  z-index: 10;
}

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

.data-table tbody tr:hover {
  background: var(--app-hover);
}

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

/* Badges */
.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 12px;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
}

.badge-warehouse { background: rgba(40, 167, 69, 0.2); color: #28a745; }
.badge-subscriber { background: rgba(0, 184, 204, 0.2); color: #00b8cc; }
.badge-employee { background: rgba(255, 193, 7, 0.2); color: #ffc107; }
.badge-search { background: rgba(220, 53, 69, 0.2); color: #dc3545; }
.badge-written-off { background: rgba(108, 117, 125, 0.2); color: #6c757d; }

/* Buttons */
.btn-primary,
.btn-secondary,
.btn-danger {
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  transition: all 0.2s;
}

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

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

.btn-secondary {
  background: var(--app-hover);
  color: var(--app-text);
  border: 1px solid var(--app-border);
}

.btn-secondary:hover {
  background: var(--app-border);
}

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

.btn-danger:hover {
  background: #c82333;
}

/* Forms */
.operation-form {
  max-width: 800px;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 16px;
  margin-bottom: 16px;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.form-group label {
  font-size: 13px;
  color: var(--text-secondary);
  font-weight: 500;
}

.form-group input,
.form-group select {
  padding: 10px 14px;
  background: var(--app-bg);
  border: 1px solid var(--app-border);
  border-radius: var(--radius);
  color: var(--app-text);
  font-size: 14px;
  transition: border-color 0.2s;
}

.form-group input:focus,
.form-group select:focus {
  outline: none;
  border-color: var(--app-primary);
}

.input-with-btn {
  display: flex;
  gap: 8px;
}

.input-with-btn select {
  flex: 1;
}

.input-with-btn .btn-secondary {
  white-space: nowrap;
}

.inline-form {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.inline-form input {
  flex: 1;
  padding: 8px 12px;
  background: var(--app-bg);
  border: 1px solid var(--app-border);
  border-radius: var(--radius);
  color: var(--app-text);
  font-size: 14px;
}

.inline-form input:focus {
  outline: none;
  border-color: var(--app-primary);
}

/* Tabs */
.operations-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 24px;
  border-bottom: 1px solid var(--border);
  padding-bottom: 12px;
}

.tab-btn {
  padding: 10px 20px;
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border-radius: var(--radius) var(--radius) 0 0;
  transition: all 0.2s;
}

.tab-btn:hover {
  background: var(--app-hover);
  color: var(--app-text);
}

.tab-btn.active {
  background: rgba(0, 184, 204, 0.1);
  color: var(--app-primary);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

/* Equipment preview */
.equipment-preview {
  margin-bottom: 20px;
  padding: 16px;
  background: var(--app-bg);
  border: 1px solid var(--app-border);
  border-radius: var(--radius);
}

.preview-card {
  display: flex;
  gap: 16px;
  align-items: center;
  flex-wrap: wrap;
}

.preview-card strong {
  color: var(--primary);
  font-size: 16px;
}

/* Filters */
.filters-row {
  display: flex;
  gap: 12px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.search-input {
  flex: 1;
  min-width: 250px;
  padding: 10px 14px;
  background: var(--app-card);
  border: 1px solid var(--app-border);
  border-radius: var(--radius);
  color: var(--app-text);
  font-size: 14px;
}

.search-input:focus {
  outline: none;
  border-color: var(--app-primary);
}

.filters-row select {
  padding: 10px 14px;
  background: var(--app-card);
  border: 1px solid var(--app-border);
  border-radius: var(--radius);
  color: var(--app-text);
  font-size: 14px;
  cursor: pointer;
}

/* Settings grid */
.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 24px;
}

/* Status legend */
.status-legend {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.status-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  background: var(--app-bg);
  border-radius: var(--radius);
}

.status-color {
  width: 20px;
  height: 20px;
  border-radius: 6px;
}

/* Backup actions */
.backup-actions {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

/* Modal */
.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.modal.active {
  display: flex;
}

.modal-content {
  background: var(--app-card);
  border: 1px solid var(--app-border);
  border-radius: var(--radius);
  max-width: 800px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
}

.modal-sm {
  max-width: 400px;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 20px 24px;
  border-bottom: 1px solid var(--app-border);
}

.modal-header h3 {
  font-size: 18px;
  font-weight: 600;
}

.modal-close {
  background: none;
  border: none;
  color: var(--app-text-muted);
  font-size: 28px;
  cursor: pointer;
  line-height: 1;
}

.modal-close:hover {
  color: var(--app-text);
}

.modal-body {
  padding: 24px;
}

/* Timeline */
.timeline {
  margin-top: 20px;
}

.timeline-item {
  display: flex;
  gap: 16px;
  padding: 16px 0;
  border-left: 2px solid var(--app-border);
  padding-left: 20px;
  position: relative;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -6px;
  top: 20px;
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--app-primary);
}

.timeline-item:last-child {
  border-left-color: transparent;
}

.timeline-date {
  font-size: 12px;
  color: var(--app-text-muted);
  min-width: 100px;
}

.timeline-content {
  flex: 1;
}

.timeline-operation {
  font-weight: 600;
  color: var(--app-text);
  margin-bottom: 4px;
}

.timeline-details {
  font-size: 13px;
  color: var(--app-text-muted);
}

.equipment-info {
  padding: 16px;
  background: var(--app-bg);
  border-radius: var(--radius);
  margin-bottom: 20px;
}

.equipment-info strong {
  color: var(--app-primary);
}

/* Action button in table */
.action-btn {
  background: none;
  border: none;
  color: var(--app-primary);
  cursor: pointer;
  font-size: 16px;
  padding: 4px 8px;
  border-radius: 6px;
  transition: background 0.2s;
}

.action-btn:hover {
  background: rgba(0, 184, 204, 0.1);
}

.action-btn.processed {
  color: var(--success);
}

/* Scrollbar */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--app-bg);
}

::-webkit-scrollbar-thumb {
  background: var(--app-border);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--app-text-muted);
}