:root {
  --primary: #1e3a8a;
  --primary-hover: #1e40af;
  --primary-light: #eff6ff;
  --secondary: #0f766e;
  --accent: #f59e0b;
  --danger: #dc2626;
  --danger-light: #fef2f2;
  --success: #16a34a;
  --success-light: #f0fdf4;
  --warning: #d97706;
  --warning-light: #fffbeb;
  --bg-main: #f8fafc;
  --bg-card: #ffffff;
  --text-main: #0f172a;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --radius-sm: 6px;
  --radius: 12px;
  --radius-lg: 16px;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
  --font-sans: 'Vazirmatn', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
}

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

body {
  font-family: var(--font-sans);
  background-color: var(--bg-main);
  color: var(--text-main);
  direction: rtl;
  text-align: right;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* Top Navigation Header */
.navbar {
  background: #ffffff;
  border-bottom: 1px solid var(--border);
  position: sticky;
  top: 0;
  z-index: 40;
  box-shadow: var(--shadow-sm);
}

.navbar-inner {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0.85rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.brand-icon {
  background: linear-gradient(135deg, #1e3a8a, #0284c7);
  color: white;
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 1.25rem;
  box-shadow: 0 2px 4px rgba(30, 58, 138, 0.25);
}

.brand-title {
  font-size: 1.25rem;
  font-weight: 800;
  color: #1e293b;
}

.brand-subtitle {
  font-size: 0.78rem;
  color: var(--text-muted);
}

.navbar-status {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  background: var(--success-light);
  color: var(--success);
  border: 1px solid #bbf7d0;
  border-radius: 9999px;
  font-size: 0.8rem;
  font-weight: 600;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: var(--success);
  box-shadow: 0 0 0 2px #dcfce7;
}

/* Main Content */
.container {
  max-width: 1280px;
  margin: 1.75rem auto;
  padding: 0 1.5rem 3rem;
}

/* Stats Grid */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.25rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

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

.stat-info .stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 0.35rem;
}

.stat-info .stat-value {
  font-size: 1.6rem;
  font-weight: 800;
  color: #0f172a;
}

.stat-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
}

.stat-blue { background: #dbeafe; color: #1e40af; }
.stat-amber { background: #fef3c7; color: #b45309; }
.stat-emerald { background: #d1fae5; color: #047857; }
.stat-purple { background: #f3e8ff; color: #7e22ce; }

/* Controls Bar */
.controls-bar {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  margin-bottom: 1.5rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
}

.filters-group {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  flex: 1;
}

.search-input-wrapper {
  position: relative;
  flex: 1;
  min-width: 220px;
}

.search-input {
  width: 100%;
  padding: 0.6rem 2.25rem 0.6rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.9rem;
  outline: none;
  transition: border-color 0.2s;
}

.search-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.search-icon {
  position: absolute;
  right: 0.75rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
  font-size: 0.9rem;
}

.select-input {
  padding: 0.6rem 0.75rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.88rem;
  outline: none;
  background-color: #fff;
  cursor: pointer;
}

.checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  color: #334155;
  cursor: pointer;
  user-select: none;
}

.checkbox-label input {
  accent-color: var(--danger);
  width: 16px;
  height: 16px;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.6rem 1.25rem;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s ease;
}

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

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

.btn-secondary {
  background-color: #f1f5f9;
  color: #334155;
  border-color: var(--border);
}

.btn-secondary:hover {
  background-color: #e2e8f0;
}

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

.btn-danger:hover {
  background-color: #b91c1c;
}

.btn-sm {
  padding: 0.35rem 0.65rem;
  font-size: 0.8rem;
}

/* Table Card */
.table-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.table-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.table-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: #1e293b;
}

.table-wrapper {
  overflow-x: auto;
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: right;
  font-size: 0.9rem;
}

th {
  background-color: #f8fafc;
  color: #475569;
  font-weight: 600;
  padding: 0.85rem 1.25rem;
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

td {
  padding: 0.9rem 1.25rem;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}

tbody tr:hover {
  background-color: #f8fafc;
}

.code-badge {
  font-family: monospace;
  font-weight: 700;
  background: #f1f5f9;
  color: #0f172a;
  padding: 0.2rem 0.5rem;
  border-radius: 4px;
  font-size: 0.85rem;
}

.category-tag {
  display: inline-block;
  padding: 0.2rem 0.65rem;
  border-radius: 9999px;
  font-size: 0.78rem;
  font-weight: 500;
  background: var(--primary-light);
  color: var(--primary);
}

.stock-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.25rem 0.6rem;
  border-radius: var(--radius-sm);
  font-size: 0.82rem;
  font-weight: 600;
}

.stock-ok {
  background: var(--success-light);
  color: var(--success);
}

.stock-low {
  background: var(--danger-light);
  color: var(--danger);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.75; }
}

.actions-cell {
  display: flex;
  gap: 0.5rem;
}

/* Modal */
.modal-overlay {
  position: fixed;
  top: 0;
  right: 0;
  left: 0;
  bottom: 0;
  background-color: rgba(15, 23, 42, 0.6);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 100;
  backdrop-filter: blur(2px);
  padding: 1rem;
}

.modal-content {
  background: white;
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 620px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  animation: modalFadeIn 0.2s ease;
}

@keyframes modalFadeIn {
  from { opacity: 0; transform: scale(0.96); }
  to { opacity: 1; transform: scale(1); }
}

.modal-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.15rem;
  font-weight: 700;
}

.close-btn {
  background: transparent;
  border: none;
  font-size: 1.4rem;
  color: var(--text-muted);
  cursor: pointer;
}

.modal-body {
  padding: 1.5rem;
  max-height: 80vh;
  overflow-y: auto;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-full {
  grid-column: 1 / -1;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.85rem;
  font-weight: 600;
  color: #334155;
}

.form-control {
  padding: 0.6rem 0.8rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-family: inherit;
  font-size: 0.9rem;
  outline: none;
}

.form-control:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(30, 58, 138, 0.1);
}

.modal-footer {
  padding: 1rem 1.5rem;
  background: #f8fafc;
  border-top: 1px solid var(--border);
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
}

/* Toast */
.toast-container {
  position: fixed;
  bottom: 2rem;
  left: 2rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 200;
}

.toast {
  padding: 0.9rem 1.25rem;
  border-radius: var(--radius-sm);
  box-shadow: var(--shadow-lg);
  color: white;
  font-size: 0.9rem;
  font-weight: 500;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  animation: slideIn 0.25s ease;
}

@keyframes slideIn {
  from { transform: translateY(100%); opacity: 0; }
  to { transform: translateY(0); opacity: 1; }
}

.toast-success { background-color: var(--success); }
.toast-error { background-color: var(--danger); }

/* Empty state */
.empty-state {
  text-align: center;
  padding: 3rem 1.5rem;
  color: var(--text-muted);
}

.empty-icon {
  font-size: 3rem;
  margin-bottom: 0.75rem;
}