/**
 * ============================================
 * EPIAS DESIGN SYSTEM
 * ============================================
 * Design sobre, limpide, ergonomique et professionnel
 * Version: 1.0
 * Date: 2025-10-26
 */

/* ============================================
   VARIABLES CSS
   ============================================ */
:root {
  /* Couleurs principales */
  --primary: #2563eb;
  --primary-dark: #1e40af;
  --primary-light: #3b82f6;
  
  /* Couleurs secondaires */
  --secondary: #64748b;
  --secondary-dark: #475569;
  --secondary-light: #94a3b8;
  
  /* Couleurs d'accentuation */
  --success: #10b981;
  --success-dark: #059669;
  --success-light: #34d399;
  
  --warning: #f59e0b;
  --warning-dark: #d97706;
  --warning-light: #fbbf24;
  
  --danger: #ef4444;
  --danger-dark: #dc2626;
  --danger-light: #f87171;
  
  --info: #06b6d4;
  --info-dark: #0891b2;
  --info-light: #22d3ee;
  
  /* Couleurs neutres */
  --gray-50: #f8fafc;
  --gray-100: #f1f5f9;
  --gray-200: #e2e8f0;
  --gray-300: #cbd5e1;
  --gray-400: #94a3b8;
  --gray-500: #64748b;
  --gray-600: #475569;
  --gray-700: #334155;
  --gray-800: #1e293b;
  --gray-900: #0f172a;
  
  /* Arrière-plans */
  --bg-body: #f8fafc;
  --bg-card: #ffffff;
  --bg-input: #ffffff;
  --bg-hover: #f1f5f9;
  
  /* Bordures */
  --border-color: #e2e8f0;
  --border-radius: 0.5rem;
  --border-radius-sm: 0.375rem;
  --border-radius-lg: 0.75rem;
  
  /* Ombres */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.1), 0 1px 2px -1px rgb(0 0 0 / 0.1);
  --shadow-md: 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);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
  
  /* Espacements */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  
  /* Transitions */
  --transition: all 0.15s ease-in-out;
  --transition-fast: all 0.1s ease-in-out;
  --transition-slow: all 0.3s ease-in-out;
}

/* ============================================
   BOUTONS
   ============================================ */

/* Bouton principal */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.625rem 1.25rem;
  font-size: 0.875rem;
  font-weight: 500;
  line-height: 1.5;
  border-radius: var(--border-radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  white-space: nowrap;
  user-select: none;
}

.btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.btn i {
  margin-right: 0.5rem;
}

.btn:last-child i {
  margin-right: 0;
  margin-left: 0.5rem;
}

/* Tailles de boutons */
.btn-sm {
  padding: 0.375rem 0.875rem;
  font-size: 0.8125rem;
}

.btn-lg {
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
}

.btn-xl {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

/* Variantes de couleurs */
.btn-primary {
  background-color: var(--primary);
  color: white;
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover:not(:disabled) {
  background-color: var(--primary-dark);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.btn-primary:active:not(:disabled) {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

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

.btn-secondary:hover:not(:disabled) {
  background-color: var(--secondary-dark);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

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

.btn-success:hover:not(:disabled) {
  background-color: var(--success-dark);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

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

.btn-warning:hover:not(:disabled) {
  background-color: var(--warning-dark);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

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

.btn-danger:hover:not(:disabled) {
  background-color: var(--danger-dark);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

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

.btn-info:hover:not(:disabled) {
  background-color: var(--info-dark);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

/* Boutons outline */
.btn-outline-primary {
  background-color: transparent;
  color: var(--primary);
  border-color: var(--primary);
}

.btn-outline-primary:hover:not(:disabled) {
  background-color: var(--primary);
  color: white;
}

.btn-outline-secondary {
  background-color: transparent;
  color: var(--secondary);
  border-color: var(--secondary);
}

.btn-outline-secondary:hover:not(:disabled) {
  background-color: var(--secondary);
  color: white;
}

.btn-outline-success {
  background-color: transparent;
  color: var(--success);
  border-color: var(--success);
}

.btn-outline-success:hover:not(:disabled) {
  background-color: var(--success);
  color: white;
}

.btn-outline-danger {
  background-color: transparent;
  color: var(--danger);
  border-color: var(--danger);
}

.btn-outline-danger:hover:not(:disabled) {
  background-color: var(--danger);
  color: white;
}

/* Boutons ghost (sans bordure) */
.btn-ghost {
  background-color: transparent;
  color: var(--gray-700);
  border-color: transparent;
  box-shadow: none;
}

.btn-ghost:hover:not(:disabled) {
  background-color: var(--gray-100);
  color: var(--gray-900);
}

/* Bouton pleine largeur */
.btn-block {
  display: flex;
  width: 100%;
}

/* ============================================
   CARTES
   ============================================ */

.card {
  background-color: var(--bg-card);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: var(--transition);
}

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

.card-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--border-color);
  background-color: var(--gray-50);
}

.card-title {
  margin: 0;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--gray-900);
}

.card-body {
  padding: 1.5rem;
}

.card-footer {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--border-color);
  background-color: var(--gray-50);
}

/* ============================================
   FORMULAIRES
   ============================================ */

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  margin-bottom: 0.5rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-700);
}

.form-label-required::after {
  content: " *";
  color: var(--danger);
}

.form-control {
  display: block;
  width: 100%;
  padding: 0.625rem 0.875rem;
  font-size: 0.875rem;
  line-height: 1.5;
  color: var(--gray-900);
  background-color: var(--bg-input);
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  transition: var(--transition);
}

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

.form-control:disabled {
  background-color: var(--gray-100);
  cursor: not-allowed;
  opacity: 0.6;
}

.form-control-sm {
  padding: 0.375rem 0.75rem;
  font-size: 0.8125rem;
}

.form-control-lg {
  padding: 0.75rem 1rem;
  font-size: 1rem;
}

.form-select {
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23334155' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  background-size: 16px 12px;
  padding-right: 2.5rem;
  appearance: none;
}

.form-text {
  display: block;
  margin-top: 0.375rem;
  font-size: 0.8125rem;
  color: var(--gray-600);
}

.form-error {
  display: block;
  margin-top: 0.375rem;
  font-size: 0.8125rem;
  color: var(--danger);
}

/* ============================================
   BADGES
   ============================================ */

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.25rem 0.75rem;
  font-size: 0.75rem;
  font-weight: 600;
  line-height: 1;
  border-radius: 9999px;
  white-space: nowrap;
}

.badge-primary {
  background-color: rgba(37, 99, 235, 0.1);
  color: var(--primary);
}

.badge-success {
  background-color: rgba(16, 185, 129, 0.1);
  color: var(--success);
}

.badge-warning {
  background-color: rgba(245, 158, 11, 0.1);
  color: var(--warning);
}

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

.badge-info {
  background-color: rgba(6, 182, 212, 0.1);
  color: var(--info);
}

.badge-secondary {
  background-color: rgba(100, 116, 139, 0.1);
  color: var(--secondary);
}

/* ============================================
   ALERTES
   ============================================ */

.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--border-radius);
  border-left: 4px solid;
  margin-bottom: 1rem;
}

.alert-success {
  background-color: rgba(16, 185, 129, 0.1);
  border-color: var(--success);
  color: var(--success-dark);
}

.alert-warning {
  background-color: rgba(245, 158, 11, 0.1);
  border-color: var(--warning);
  color: var(--warning-dark);
}

.alert-danger {
  background-color: rgba(239, 68, 68, 0.1);
  border-color: var(--danger);
  color: var(--danger-dark);
}

.alert-info {
  background-color: rgba(6, 182, 212, 0.1);
  border-color: var(--info);
  color: var(--info-dark);
}

.alert i {
  margin-right: 0.75rem;
  font-size: 1.25rem;
}

/* ============================================
   TABLEAUX
   ============================================ */

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

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

.table thead {
  background-color: var(--gray-50);
  border-bottom: 2px solid var(--border-color);
}

.table th {
  padding: 0.875rem 1rem;
  text-align: left;
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--gray-700);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-color);
  font-size: 0.875rem;
  color: var(--gray-900);
}

.table tbody tr:hover {
  background-color: var(--bg-hover);
}

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

/* ============================================
   LIENS
   ============================================ */

.link {
  color: var(--primary);
  text-decoration: none;
  transition: var(--transition);
  cursor: pointer;
}

.link:hover {
  color: var(--primary-dark);
  text-decoration: underline;
}

.link-secondary {
  color: var(--secondary);
}

.link-secondary:hover {
  color: var(--secondary-dark);
}

.link-muted {
  color: var(--gray-600);
}

.link-muted:hover {
  color: var(--gray-900);
}

/* ============================================
   PAGINATION
   ============================================ */

.pagination {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.pagination-item {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.5rem;
  height: 2.5rem;
  padding: 0.5rem 0.75rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--gray-700);
  background-color: white;
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
}

.pagination-item:hover:not(.pagination-item-active):not(.pagination-item-disabled) {
  background-color: var(--gray-100);
  border-color: var(--gray-300);
}

.pagination-item-active {
  background-color: var(--primary);
  color: white;
  border-color: var(--primary);
  cursor: default;
}

.pagination-item-disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

/* ============================================
   MODALES
   ============================================ */

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
}

.modal {
  background-color: white;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-xl);
  max-width: 500px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
}

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

.modal-title {
  margin: 0;
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--gray-900);
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--gray-500);
  cursor: pointer;
  padding: 0;
  width: 2rem;
  height: 2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--border-radius);
  transition: var(--transition);
}

.modal-close:hover {
  background-color: var(--gray-100);
  color: var(--gray-900);
}

.modal-body {
  padding: 1.5rem;
}

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

/* ============================================
   UTILITAIRES
   ============================================ */

/* Espacements */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.p-0 { padding: 0; }
.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }

/* Texte */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.text-sm { font-size: 0.875rem; }
.text-base { font-size: 1rem; }
.text-lg { font-size: 1.125rem; }
.text-xl { font-size: 1.25rem; }
.text-2xl { font-size: 1.5rem; }

.font-normal { font-weight: 400; }
.font-medium { font-weight: 500; }
.font-semibold { font-weight: 600; }
.font-bold { font-weight: 700; }

.text-primary { color: var(--primary); }
.text-secondary { color: var(--secondary); }
.text-success { color: var(--success); }
.text-warning { color: var(--warning); }
.text-danger { color: var(--danger); }
.text-muted { color: var(--gray-600); }

/* Flex */
.d-flex { display: flex; }
.d-inline-flex { display: inline-flex; }
.flex-column { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.justify-content-center { justify-content: center; }
.justify-content-between { justify-content: space-between; }
.justify-content-end { justify-content: flex-end; }
.align-items-center { align-items: center; }
.align-items-start { align-items: flex-start; }
.gap-1 { gap: var(--spacing-xs); }
.gap-2 { gap: var(--spacing-sm); }
.gap-3 { gap: var(--spacing-md); }
.gap-4 { gap: var(--spacing-lg); }

/* Ombres */
.shadow-none { box-shadow: none; }
.shadow-sm { box-shadow: var(--shadow-sm); }
.shadow { box-shadow: var(--shadow); }
.shadow-md { box-shadow: var(--shadow-md); }
.shadow-lg { box-shadow: var(--shadow-lg); }

/* Bordures */
.rounded { border-radius: var(--border-radius); }
.rounded-lg { border-radius: var(--border-radius-lg); }
.rounded-full { border-radius: 9999px; }

/* Affichage */
.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }

/* Position */
.position-relative { position: relative; }
.position-absolute { position: absolute; }
.position-fixed { position: fixed; }

/* Largeur */
.w-100 { width: 100%; }
.w-50 { width: 50%; }
.w-auto { width: auto; }