/* ===== Pharma B2B v0.001 - Base Styles ===== */
:root {
  --primary: #0d9488;
  --primary-dark: #0f766e;
  --primary-light: #ccfbf1;
  --secondary: #1e40af;
  --danger: #dc2626;
  --warning: #d97706;
  --success: #16a34a;
  --bg: #f1f5f9;
  --card: #ffffff;
  --text: #1e293b;
  --text-muted: #64748b;
  --border: #e2e8f0;
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.08);
  --radius: 12px;
}

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

body {
  font-family: 'Tahoma', 'Segoe UI', system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  direction: rtl;
}

.hidden { display: none !important; }

/* ===== Login ===== */
.login-screen {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #0f766e 0%, #1e40af 100%);
  padding: 20px;
}

.login-card {
  background: white;
  border-radius: 20px;
  padding: 40px;
  width: 100%;
  max-width: 400px;
  box-shadow: 0 25px 50px -12px rgb(0 0 0 / 0.25);
}

.logo {
  text-align: center;
  margin-bottom: 30px;
}

.logo i {
  font-size: 48px;
  color: var(--primary);
}

.logo h1 {
  font-size: 28px;
  margin-top: 8px;
  color: var(--text);
}

.logo p {
  color: var(--text-muted);
  font-size: 14px;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  margin-bottom: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.form-group input {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--border);
  border-radius: 10px;
  font-size: 15px;
  transition: border 0.2s;
}

.form-group input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border: none;
  border-radius: 10px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.btn-primary {
  background: var(--primary);
  color: white;
  width: 100%;
  justify-content: center;
}

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

.hint {
  text-align: center;
  margin-top: 16px;
  font-size: 12px;
  color: var(--text-muted);
}

/* ===== App Layout ===== */
.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

.header {
  background: white;
  border-bottom: 1px solid var(--border);
  padding: 12px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow);
}

.header-right, .header-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 18px;
  color: var(--primary);
}

.brand small {
  font-size: 11px;
  background: var(--primary-light);
  color: var(--primary-dark);
  padding: 2px 6px;
  border-radius: 6px;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 24px;
  cursor: pointer;
  color: var(--text);
}

.user-info {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 14px;
  color: var(--text-muted);
}

.btn-icon {
  background: none;
  border: none;
  font-size: 22px;
  cursor: pointer;
  color: var(--text-muted);
  padding: 6px;
  border-radius: 8px;
  transition: all 0.2s;
}

.btn-icon:hover {
  background: var(--bg);
  color: var(--danger);
}

.main-layout {
  display: flex;
  flex: 1;
}

/* ===== Sidebar ===== */
.sidebar {
  width: 260px;
  background: white;
  border-left: 1px solid var(--border);
  padding: 20px 0;
  position: sticky;
  top: 57px;
  height: calc(100vh - 57px);
  overflow-y: auto;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 24px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 15px;
  transition: all 0.2s;
  border-right: 3px solid transparent;
}

.nav-item:hover {
  background: var(--bg);
  color: var(--primary);
}

.nav-item.active {
  background: var(--primary-light);
  color: var(--primary-dark);
  border-right-color: var(--primary);
  font-weight: 600;
}

.nav-item i {
  font-size: 20px;
}

/* ===== Content ===== */
.content {
  flex: 1;
  padding: 24px;
  overflow-y: auto;
}

.page {
  display: none;
}

.page.active {
  display: block;
}

.page-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  flex-wrap: wrap;
  gap: 12px;
}

.page-header h2 {
  font-size: 22px;
  color: var(--text);
}

.page-header p {
  color: var(--text-muted);
  font-size: 14px;
  margin-top: 4px;
}

/* ===== Stats ===== */
.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 16px;
  margin-bottom: 32px;
}

.stat-card {
  background: white;
  border-radius: var(--radius);
  padding: 20px;
  display: flex;
  align-items: center;
  gap: 16px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.stat-icon {
  width: 52px;
  height: 52px;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  color: white;
}

.stat-icon.blue { background: #0ea5e9; }
.stat-icon.orange { background: #f59e0b; }
.stat-icon.red { background: #ef4444; }
.stat-icon.green { background: #22c55e; }

.stat-info h3 {
  font-size: 28px;
  font-weight: 700;
}

.stat-info p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== Quick Actions ===== */
.quick-actions h3 {
  margin-bottom: 16px;
  font-size: 18px;
}

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

.action-btn {
  background: white;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 16px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  transition: all 0.2s;
  font-size: 14px;
  color: var(--text);
}

.action-btn i {
  font-size: 28px;
  color: var(--primary);
}

.action-btn:hover {
  border-color: var(--primary);
  background: var(--primary-light);
  transform: translateY(-2px);
}

/* ===== Filters & Table ===== */
.filters {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.filters select,
.filters input {
  padding: 10px 14px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
  background: white;
  min-width: 160px;
}

.filters input {
  flex: 1;
  min-width: 200px;
}

.table-container {
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  overflow-x: auto;
}

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

.data-table th {
  background: #f8fafc;
  padding: 14px 16px;
  text-align: right;
  font-weight: 600;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  white-space: nowrap;
}

.data-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
}

.data-table tr:hover {
  background: #f8fafc;
}

.badge {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 20px;
  font-size: 12px;
  font-weight: 600;
}

.badge-success { background: #dcfce7; color: #166534; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger { background: #fee2e2; color: #991b1b; }

.btn-sm {
  padding: 6px 12px;
  font-size: 13px;
  border-radius: 6px;
  border: none;
  cursor: pointer;
  background: var(--primary);
  color: white;
}

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

/* ===== Cards ===== */
.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 16px;
}

.card {
  background: white;
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
  transition: transform 0.2s;
}

.card:hover {
  transform: translateY(-3px);
}

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

.card-title {
  font-size: 16px;
  font-weight: 600;
}

.card-meta {
  font-size: 13px;
  color: var(--text-muted);
  margin-bottom: 8px;
}

.card-actions {
  display: flex;
  gap: 8px;
  margin-top: 16px;
}

/* ===== Knowledge ===== */
.knowledge-tabs {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}

.tab {
  padding: 10px 18px;
  border: 1.5px solid var(--border);
  background: white;
  border-radius: 8px;
  cursor: pointer;
  font-size: 14px;
  transition: all 0.2s;
}

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

.knowledge-item {
  background: white;
  border-radius: var(--radius);
  padding: 18px;
  margin-bottom: 12px;
  border: 1px solid var(--border);
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.knowledge-item i {
  font-size: 24px;
  color: var(--primary);
  margin-top: 2px;
}

.knowledge-item h4 {
  font-size: 15px;
  margin-bottom: 4px;
}

.knowledge-item p {
  font-size: 13px;
  color: var(--text-muted);
}

/* ===== Shop ===== */
.shop-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 16px;
}

.product-card {
  background: white;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
  border: 1px solid var(--border);
}

.product-img {
  height: 140px;
  background: linear-gradient(135deg, #ccfbf1, #e0f2fe);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 48px;
  color: var(--primary);
}

.product-info {
  padding: 16px;
}

.product-info h4 {
  font-size: 15px;
  margin-bottom: 6px;
}

.product-price {
  color: var(--primary);
  font-weight: 700;
  font-size: 16px;
}

/* ===== Alert ===== */
.alert {
  padding: 14px 18px;
  border-radius: 10px;
  margin-bottom: 20px;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 14px;
}

.alert-info {
  background: #e0f2fe;
  color: #0369a1;
}

/* ===== Modal ===== */
.modal {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 20px;
}

.modal-content {
  background: white;
  border-radius: 16px;
  width: 100%;
  max-width: 500px;
  max-height: 90vh;
  overflow-y: auto;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 18px 20px;
  border-bottom: 1px solid var(--border);
}

.modal-body {
  padding: 20px;
}

.modal-body .form-group {
  margin-bottom: 16px;
}

.modal-body label {
  display: block;
  margin-bottom: 6px;
  font-size: 13px;
  font-weight: 600;
}

.modal-body input,
.modal-body select,
.modal-body textarea {
  width: 100%;
  padding: 10px 12px;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  font-size: 14px;
}

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }

  .sidebar {
    position: fixed;
    right: -280px;
    top: 57px;
    z-index: 90;
    transition: right 0.3s;
    box-shadow: -4px 0 20px rgba(0,0,0,0.1);
  }

  .sidebar.open {
    right: 0;
  }

  .content {
    padding: 16px;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
  }

  .page-header {
    flex-direction: column;
    align-items: flex-start;
  }
}

@media (max-width: 480px) {
  .stats-grid {
    grid-template-columns: 1fr;
  }
}