/* ======================================
   Gestion Stock - Style moderne
   ====================================== */

:root {
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --primary-light: #3b82f6;
  --secondary: #64748b;
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  --info: #06b6d4;
  --bg-body: #f8fafc;
  --bg-card: #ffffff;
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  --radius: 0.5rem;
}

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

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background: var(--bg-body);
  color: var(--text-primary);
  line-height: 1.6;
  min-height: 100vh;
}

/* ======================================
   Header & Navigation
   ====================================== */

.app-header {
  background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
  color: white;
  padding: 2rem 0;
  box-shadow: var(--shadow-lg);
  margin-bottom: 2rem;
}

.app-header h1 {
  font-size: 1.875rem;
  font-weight: 700;
  margin: 0;
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.app-header h1::before {
  content: "📦";
  font-size: 2rem;
}

.header-subtitle {
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.95rem;
  margin-top: 0.25rem;
  font-weight: 400;
}

/* ======================================
   Cards & Containers
   ====================================== */

.card {
  background: var(--bg-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  border: 1px solid var(--border);
  transition: all 0.2s ease;
}

.card:hover {
  box-shadow: var(--shadow-lg);
}

.card-header {
  font-size: 1.125rem;
  font-weight: 600;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 2px solid var(--border);
  color: var(--text-primary);
}

/* ======================================
   Filters Section
   ====================================== */

.filters-card {
  background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
  border-left: 4px solid var(--primary);
}

.filter-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 1rem;
}

/* ======================================
   Forms & Inputs
   ====================================== */

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.375rem;
  text-transform: uppercase;
  letter-spacing: 0.025em;
}

.form-control, .form-select {
  width: 100%;
  padding: 0.625rem 0.875rem;
  border: 2px solid var(--border);
  border-radius: var(--radius);
  font-size: 0.95rem;
  transition: all 0.2s ease;
  background: white;
  color: var(--text-primary);
}

.form-control:focus, .form-select:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
}

.form-check {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 0;
}

.form-check-input {
  width: 1.25rem;
  height: 1.25rem;
  cursor: pointer;
  accent-color: var(--primary);
}

.form-check-label {
  cursor: pointer;
  user-select: none;
  font-weight: 500;
}

/* ======================================
   Buttons
   ====================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.625rem 1.25rem;
  border: none;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  white-space: nowrap;
}

.btn:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow);
}

.btn:active {
  transform: translateY(0);
}

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

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

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

.btn-success:hover {
  background: #059669;
}

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

.btn-warning:hover {
  background: #d97706;
}

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

.btn-danger:hover {
  background: #dc2626;
}

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

.btn-info:hover {
  background: #0891b2;
}

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

.btn-secondary:hover {
  background: #475569;
}

.btn-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.875rem;
}

.btn-group {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

/* ======================================
   Table
   ====================================== */

.table-container {
  overflow-x: auto;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

table {
  width: 100%;
  border-collapse: collapse;
  background: white;
}

thead {
  background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
}

thead th {
  padding: 1rem;
  text-align: left;
  font-weight: 700;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  border-bottom: 2px solid var(--border);
}

thead th a {
  color: var(--text-primary);
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  transition: color 0.2s ease;
}

thead th a:hover {
  color: var(--primary);
}

tbody tr {
  border-bottom: 1px solid var(--border);
  transition: all 0.15s ease;
}

tbody tr:hover {
  background: #f8fafc;
}

tbody td {
  padding: 1rem;
  font-size: 0.95rem;
}

/* ======================================
   Alert Styles
   ====================================== */

.alert-row {
  background: linear-gradient(90deg, #fef2f2 0%, #fee2e2 100%) !important;
  border-left: 4px solid var(--danger) !important;
  animation: pulse-alert 2s ease-in-out infinite;
}

@keyframes pulse-alert {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.9; }
}

.alert-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  background: var(--danger);
  color: white;
  border-radius: 50%;
  font-weight: 700;
  font-size: 0.875rem;
  box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.1);
  animation: pulse-icon 1.5s ease-in-out infinite;
}

@keyframes pulse-icon {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.1); }
}

.alert-badge::before {
  content: "⚠";
}

/* ======================================
   Stats & Badges
   ====================================== */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: white;
  padding: 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border-left: 4px solid var(--primary);
  transition: all 0.2s ease;
}

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

.stat-label {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary);
  margin-top: 0.5rem;
}

.badge {
  display: inline-block;
  padding: 0.375rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.875rem;
  font-weight: 600;
  white-space: nowrap;
}

.badge-primary { background: #dbeafe; color: #1e40af; }
.badge-success { background: #d1fae5; color: #065f46; }
.badge-warning { background: #fef3c7; color: #92400e; }
.badge-danger { background: #fee2e2; color: #991b1b; }
.badge-info { background: #cffafe; color: #155e75; }

/* ======================================
   Modal
   ====================================== */

.modal {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1000;
  align-items: center;
  justify-content: center;
}

.modal.show {
  display: flex;
}

.modal-dialog {
  background: white;
  border-radius: var(--radius);
  max-width: 500px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: 0 20px 25px -5px rgb(0 0 0 / 0.1);
  animation: modal-slide-in 0.3s ease;
}

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

.modal-header {
  padding: 1.5rem;
  border-bottom: 2px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-title {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-primary);
}

.modal-body {
  padding: 1.5rem;
}

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

.btn-close {
  background: transparent;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-secondary);
  padding: 0;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  transition: all 0.2s ease;
}

.btn-close:hover {
  background: var(--bg-body);
  color: var(--text-primary);
}

/* ======================================
   Utilities
   ====================================== */

.text-center { text-align: center; }
.text-right { text-align: right; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.d-flex { display: flex; }
.gap-2 { gap: 0.5rem; }
.gap-3 { gap: 1rem; }
.align-items-center { align-items: center; }
.justify-content-between { justify-content: space-between; }

.container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* ======================================
   Responsive
   ====================================== */

@media (max-width: 768px) {
  .app-header h1 {
    font-size: 1.5rem;
  }
  
  .filter-row {
    grid-template-columns: 1fr;
  }
  
  .btn-group {
    flex-direction: column;
  }
  
  .btn {
    width: 100%;
  }
  
  table {
    font-size: 0.875rem;
  }
  
  thead th, tbody td {
    padding: 0.75rem 0.5rem;
  }
}

/* ======================================
   Animations
   ====================================== */

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.fade-in {
  animation: fadeIn 0.3s ease;
}

/* ======================================
   Loading State
   ====================================== */

.loading {
  display: inline-block;
  width: 1rem;
  height: 1rem;
  border: 2px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}