:root {
  --bg: #0f172a;
  --panel: #111827;
  --card: #0b1220;
  --text: #e5e7eb;
  --muted: #94a3b8;
  --primary: #3b82f6;
  --primary-600: #2563eb;
  --success: #22c55e;
  --warning: #f59e0b;
  --danger: #ef4444;
  --border: #1f2937;
}

* { box-sizing: border-box; }
html, body { height: 100%; }
body {
  margin: 0;
  font-family: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
}

.app {
  display: grid;
  grid-template-columns: 260px 1fr;
  min-height: 100vh;
}

.sidebar {
  background: #0b1220;
  border-right: 1px solid var(--border);
  padding: 24px 16px;
}

.brand {
  font-weight: 700;
  font-size: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 24px;
}

.menu-group { margin-bottom: 12px; }

.submenu-toggle {
  width: 100%;
  text-align: left;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 10px;
  font-size: 14px;
  cursor: pointer;
  margin: 4px 0 6px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.submenu-toggle:hover {
  background: rgba(59, 130, 246, 0.12);
}

.submenu-toggle::after {
  content: "▸";
  color: var(--muted);
  font-size: 12px;
  transition: transform 0.2s ease;
}

.submenu-toggle.open::after {
  transform: rotate(90deg);
  color: var(--text);
}

.top-link {
  display: flex;
  align-items: center;
  margin: 8px 0 12px;
  background: rgba(15, 23, 42, 0.6);
  border: 1px solid var(--border);
}

.submenu {
  display: none !important;
  padding-left: 8px;
  margin-bottom: 8px;
  border-left: 1px dashed rgba(148, 163, 184, 0.2);
}

.submenu.open {
  display: block !important;
}

.submenu .nav-link {
  padding: 8px 12px;
  font-size: 14px;
  margin: 2px 0;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--text);
  text-decoration: none;
  transition: background 0.2s ease;
}

.nav-link:hover, .nav-link.active { background: rgba(59, 130, 246, 0.15); }

.main {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px;
  border-bottom: 1px solid var(--border);
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(12px);
}

.search {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 10px;
  width: 320px;
}

.user-chip {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--card);
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.page {
  padding: 28px;
}

.page-title { font-size: 24px; font-weight: 700; margin: 0 0 12px; }
.page-subtitle { color: var(--muted); margin: 0 0 22px; }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
}

.card-title { color: var(--muted); font-size: 13px; margin-bottom: 8px; }
.card-value { font-size: 22px; font-weight: 700; }

.table {
  width: 100%;
  border-collapse: collapse;
}
.table th, .table td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--border);
  text-align: left;
}
.table th { color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: 0.04em; }

.badge {
  padding: 4px 8px;
  border-radius: 999px;
  font-size: 12px;
  display: inline-block;
}
.badge.success { background: rgba(34, 197, 94, 0.2); color: var(--success); }
.badge.warning { background: rgba(245, 158, 11, 0.2); color: var(--warning); }
.badge.danger { background: rgba(239, 68, 68, 0.2); color: var(--danger); }

.btn {
  background: var(--primary);
  border: 0;
  color: white;
  padding: 10px 16px;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
}
.btn.small {
  padding: 6px 10px;
  font-size: 12px;
}
.btn.secondary { background: transparent; border: 1px solid var(--border); color: var(--text); }
.btn:hover { background: var(--primary-600); }

.form-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 12px; }
.input {
  background: var(--card);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 12px;
  border-radius: 10px;
}

.form-hint {
  margin-top: 10px;
  color: var(--muted);
  font-size: 13px;
}

.table-actions {
  display: flex;
  gap: 8px;
}

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

.btn.danger {
  background: rgba(239, 68, 68, 0.2);
  border: 1px solid rgba(239, 68, 68, 0.4);
  color: var(--danger);
}

.footer {
  margin-top: auto;
  padding: 18px 28px;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

.login {
  min-height: 100vh;
  display: grid;
  place-items: center;
  background: radial-gradient(circle at top, #1e293b, #0f172a);
}

.login-card {
  width: min(420px, 92%);
  background: #0b1220;
  border: 1px solid var(--border);
  padding: 28px;
  border-radius: 18px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.4);
}

.login-card h1 { margin: 0 0 6px; }
.login-card p { margin: 0 0 20px; color: var(--muted); }

.kassa-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 16px;
}

.kassa-panel {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
}

.cashier-grid {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 16px;
}

.cashier-left .card {
  margin-bottom: 12px;
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
  gap: 12px;
}

.product-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 12px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.product-name {
  font-weight: 600;
}

.product-meta {
  color: var(--muted);
  font-size: 12px;
}

.chip-row {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.chip {
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  cursor: pointer;
}

.chip.active {
  background: rgba(59, 130, 246, 0.2);
  border-color: rgba(59, 130, 246, 0.4);
}

.summary {
  margin-top: 12px;
  display: grid;
  gap: 6px;
}

.summary div {
  display: flex;
  justify-content: space-between;
  color: var(--muted);
}

.summary-total {
  font-size: 16px;
  color: var(--text);
}

.summary-total strong {
  color: var(--text);
}

.action-row {
  margin-top: 12px;
  display: flex;
  gap: 10px;
}

/* Categories Page - Professional Design */
.page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 24px;
  gap: 20px;
}

.page-header .btn {
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: 8px;
}

.btn-icon {
  font-size: 18px;
  line-height: 1;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 16px;
  margin-bottom: 28px;
}

.stat-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  transition: all 0.2s ease;
}

.stat-card:hover {
  border-color: rgba(59, 130, 246, 0.4);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: 12px;
  background: rgba(59, 130, 246, 0.15);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}

.stat-success .stat-icon {
  background: rgba(34, 197, 94, 0.15);
}

.stat-warning .stat-icon {
  background: rgba(245, 158, 11, 0.15);
}

.stat-content {
  flex: 1;
}

.stat-label {
  color: var(--muted);
  font-size: 13px;
  margin-bottom: 4px;
}

.stat-value {
  font-size: 28px;
  font-weight: 700;
  color: var(--text);
}

.categories-container {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 24px;
}

.categories-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  margin-bottom: 24px;
  flex-wrap: wrap;
}

.search-wrapper {
  position: relative;
  flex: 1;
  min-width: 280px;
}

.search-input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 16px 12px 44px;
  border-radius: 12px;
  font-size: 14px;
  transition: all 0.2s ease;
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--muted);
  font-size: 16px;
  pointer-events: none;
}

.filter-buttons {
  display: flex;
  gap: 8px;
}

.filter-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 10px 16px;
  border-radius: 10px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.filter-btn:hover {
  background: rgba(59, 130, 246, 0.1);
  border-color: var(--primary);
}

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

.categories-content {
  min-height: 200px;
}

.table-wrapper {
  overflow-x: auto;
  border-radius: 12px;
}

.categories-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--bg);
}

.categories-table thead {
  background: rgba(59, 130, 246, 0.1);
  border-bottom: 2px solid var(--border);
}

.categories-table th {
  padding: 16px;
  text-align: left;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--muted);
  border-bottom: 2px solid var(--border);
}

.categories-table th.text-right {
  text-align: right;
}

.categories-table td {
  padding: 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text);
}

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

.categories-table tbody tr:hover {
  background: rgba(59, 130, 246, 0.05);
}

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

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.category-name-cell {
  font-weight: 500;
}

.table-image {
  width: 50px;
  height: 50px;
  object-fit: cover;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--bg);
}

.no-image {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 50px;
  height: 50px;
  background: rgba(148, 163, 184, 0.1);
  border-radius: 8px;
  border: 1px solid var(--border);
  font-size: 24px;
  opacity: 0.5;
}

.category-status-badge {
  display: inline-block;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.category-status-badge.active {
  background: rgba(34, 197, 94, 0.2);
  color: var(--success);
}

.category-status-badge.inactive {
  background: rgba(245, 158, 11, 0.2);
  color: var(--warning);
}

.table-action-buttons {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  align-items: center;
}

.action-icon-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 16px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
}

.action-icon-btn:hover {
  background: rgba(59, 130, 246, 0.15);
  border-color: var(--primary);
  transform: translateY(-1px);
}

.action-icon-btn.danger:hover {
  background: rgba(239, 68, 68, 0.15);
  border-color: var(--danger);
}

.empty-state-cell {
  padding: 60px 20px !important;
  text-align: center;
}

.loading-state {
  text-align: center;
  padding: 20px;
  color: var(--muted);
}

.category-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 20px;
  transition: all 0.2s ease;
  position: relative;
  overflow: hidden;
}

.category-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.category-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 12px;
}

.category-name {
  font-size: 16px;
  font-weight: 600;
  color: var(--text);
  margin: 0;
  flex: 1;
}

.category-status {
  padding: 4px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.category-status.active {
  background: rgba(34, 197, 94, 0.2);
  color: var(--success);
}

.category-status.inactive {
  background: rgba(245, 158, 11, 0.2);
  color: var(--warning);
}

.category-actions {
  display: flex;
  gap: 8px;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

.category-action-btn {
  flex: 1;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  padding: 8px 12px;
  border-radius: 8px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.category-action-btn:hover {
  background: rgba(59, 130, 246, 0.1);
  border-color: var(--primary);
}

.category-action-btn.danger:hover {
  background: rgba(239, 68, 68, 0.15);
  border-color: var(--danger);
  color: var(--danger);
}

.loading-state,
.empty-state {
  grid-column: 1 / -1;
  text-align: center;
  padding: 60px 20px;
  color: var(--muted);
}

.empty-state-icon {
  font-size: 64px;
  margin-bottom: 16px;
  opacity: 0.5;
}

.empty-state-text {
  font-size: 16px;
  margin-bottom: 8px;
}

.empty-state-hint {
  font-size: 13px;
  color: var(--muted);
}

/* Modal Styles */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 20px;
}

.modal-overlay.active {
  display: flex;
}

.modal-content {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 18px;
  width: 100%;
  max-width: 520px;
  max-height: 90vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.4);
  animation: modalSlideIn 0.2s ease;
}

.modal-large {
  max-width: 1600px;
  width: 98%;
  max-height: 96vh;
  display: flex;
  flex-direction: column;
}

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

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 24px 32px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  background: linear-gradient(135deg, rgba(59, 130, 246, 0.05) 0%, rgba(59, 130, 246, 0.02) 100%);
}

.modal-title {
  font-size: 22px;
  font-weight: 700;
  margin: 0;
  color: var(--text);
  letter-spacing: -0.3px;
}

.modal-close {
  background: transparent;
  border: 0;
  color: var(--muted);
  font-size: 28px;
  line-height: 1;
  cursor: pointer;
  padding: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  transition: all 0.2s ease;
}

.modal-close:hover {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

.modal-form {
  padding: 24px 32px;
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.form-rows-container {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.form-group {
  margin-bottom: 0;
}

.form-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 16px;
}

.form-row:last-of-type {
  margin-bottom: 0;
}

@media (max-width: 1200px) {
  .form-row {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .form-row {
    grid-template-columns: 1fr;
  }
}

.form-label {
  display: block;
  color: var(--text);
  font-size: 13px;
  font-weight: 600;
  margin-bottom: 8px;
}

.form-input {
  width: 100%;
  background: var(--bg);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 12px 16px;
  border-radius: 10px;
  font-size: 14px;
  transition: all 0.2s ease;
}

.form-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-message {
  margin-top: 12px;
  padding: 12px;
  border-radius: 8px;
  font-size: 13px;
  min-height: 20px;
}

.form-message.success {
  background: rgba(34, 197, 94, 0.15);
  color: var(--success);
  border: 1px solid rgba(34, 197, 94, 0.3);
}

.form-message.error {
  background: rgba(239, 68, 68, 0.15);
  color: var(--danger);
  border: 1px solid rgba(239, 68, 68, 0.3);
}

.modal-actions {
  display: flex;
  gap: 12px;
  margin-top: 28px;
  padding-top: 24px;
  border-top: 1px solid var(--border);
  justify-content: flex-end;
  flex-shrink: 0;
}

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

.btn-primary:hover {
  background: var(--primary-600);
}

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

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
}

@media (max-width: 980px) {
  .app { grid-template-columns: 1fr; }
  .sidebar { position: sticky; top: 0; z-index: 10; }
  .kassa-layout { grid-template-columns: 1fr; }
  .cashier-grid { grid-template-columns: 1fr; }
  .search { width: 100%; }
  .page-header {
    flex-direction: column;
    align-items: stretch;
  }
  .categories-header {
    flex-direction: column;
  }
  .search-wrapper {
    min-width: 100%;
  }
  .table-wrapper {
    overflow-x: scroll;
  }
  
  .categories-table {
    min-width: 600px;
  }
  .stats-grid {
    grid-template-columns: 1fr;
  }
}