/* ===== VARIABLES CSS ===== */
:root {
  --primary-color: #0d6efd;
  --success-color: #198754;
  --accent-color: #6c63ff;
  --light-bg: #f8f9fa;
  --text-muted: #6c757d;
  --border-color: #dee2e6;
  --shadow-sm: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
  --shadow-md: 0 0.5rem 1rem rgba(0, 0, 0, 0.15);
  --border-radius: 0.375rem;
  --transition: all 0.15s ease-in-out;
}

/* ===== ANIMATIONS ===== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

.fade-in-up {
  animation: fadeInUp 0.6s ease-out forwards;
}

.animate-delayed {
  animation-delay: 0.2s;
  opacity: 0;
}

/* ===== STRUCTURE GÉNÉRALE ===== */
.container {
  max-width: 1200px;
}

/* Titre principal */
h1 {
  font-weight: 600;
  color: var(--primary-color);
  font-size: 2.5rem;
}

.lead {
  font-size: 1.1rem;
  color: var(--text-muted);
}

/* ===== ÉQUILIBRAGE DES COLONNES ===== */
@media (min-width: 992px) {
  .col-lg-8 {
    padding-right: 2rem;
  }
  
  .col-lg-4 {
    padding-left: 1rem;
  }
}

@media (min-width: 1200px) {
  .col-xl-6:first-child {
    max-width: 60%;
  }
  
  .col-xl-6:last-child {
    max-width: 40%;
  }
}

/* ===== CARTES DE FORMULAIRES ===== */
.card {
  border: 1px solid var(--border-color);
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  overflow: hidden;
}

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

.card-header {
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.2);
  font-weight: 500;
}

.card-header.bg-primary {
  background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 100%) !important;
}

.card-header.bg-success {
  background: linear-gradient(135deg, var(--success-color) 0%, #146c43 100%) !important;
}

.card-header h5 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: 0;
  display: flex;
  align-items: center;
}

.card-header i {
  font-size: 1.2rem;
}

.card-body {
  padding: 2rem 1.5rem;
}

/* ===== CHAMPS DE FORMULAIRE ===== */
.form-label {
  font-weight: 600;
  color: #495057;
  margin-bottom: 0.5rem;
  font-size: 0.9rem;
}

.form-control,
.form-select {
  border: 2px solid var(--border-color);
  border-radius: var(--border-radius);
  padding: 0.75rem 1rem;
  font-size: 1rem;
  transition: var(--transition);
  background-color: #fff;
}

.form-control:focus,
.form-select:focus {
  border-color: var(--accent-color);
  box-shadow: 0 0 0 0.2rem rgba(108, 99, 255, 0.25);
  outline: none;
}

.form-control:hover,
.form-select:hover {
  border-color: #adb5bd;
}

.form-control.is-invalid,
.form-select.is-invalid {
  border-color: #dc3545;
}

.form-control.is-invalid:focus,
.form-select.is-invalid:focus {
  border-color: #dc3545;
  box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

/* Textarea spécifique */
textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

/* Messages d'erreur */
.invalid-feedback {
  font-size: 0.875rem;
  color: #dc3545;
  margin-top: 0.25rem;
}

/* Textes d'aide */
.form-text {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-top: 0.5rem;
  line-height: 1.4;
}

.form-text i {
  color: var(--accent-color);
}

/* ===== CARTES D'INFORMATION (COLONNE DROITE) ===== */
.card.bg-light {
  background-color: var(--light-bg) !important;
  border: 1px solid #e9ecef;
}

.card.bg-light .card-body {
  padding: 1.5rem;
}

.card.bg-light .card-title {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  margin-bottom: 1rem;
}

.card.bg-light .card-title i {
  color: var(--accent-color);
  font-size: 1.1rem;
}

/* Badges de statut */
.badge {
  font-size: 0.8rem;
  font-weight: 500;
  padding: 0.5rem 0.75rem;
  border-radius: 0.375rem;
  display: inline-flex;
  align-items: center;
}

.badge.bg-success {
  background: linear-gradient(135deg, var(--success-color) 0%, #146c43 100%) !important;
}

.badge.bg-primary {
  background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 100%) !important;
}

.badge i {
  font-size: 0.8rem;
}

/* Boutons de sécurité */
.btn-outline-secondary {
  border-color: #adb5bd;
  color: #6c757d;
  font-weight: 500;
  transition: var(--transition);
}

.btn-outline-secondary:hover {
  background-color: #6c757d;
  border-color: #6c757d;
  color: white;
  transform: translateY(-1px);
}

.btn-outline-secondary i {
  font-size: 0.9rem;
}

/* ===== BOUTON PRINCIPAL ===== */
.btn-primary.btn-lg {
  background: linear-gradient(135deg, var(--primary-color) 0%, #0056b3 100%);
  border: none;
  padding: 0.875rem 2rem;
  font-weight: 600;
  border-radius: var(--border-radius);
  transition: var(--transition);
  box-shadow: 0 4px 8px rgba(13, 110, 253, 0.3);
}

.btn-primary.btn-lg:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 12px rgba(13, 110, 253, 0.4);
}

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

.btn-primary.btn-lg:disabled {
  background: #6c757d;
  cursor: not-allowed;
  transform: none;
}

.btn-primary.btn-lg i {
  font-size: 1.1rem;
}

/* Spinner pour le bouton de chargement */
.spinner-border-sm {
  width: 1rem;
  height: 1rem;
  border-width: 0.125rem;
}

/* ===== MESSAGES D'ALERTE ===== */
.alert {
  border: none;
  border-radius: var(--border-radius);
  font-weight: 500;
  box-shadow: var(--shadow-sm);
}

.alert-success {
  background-color: #d1e7dd;
  color: #0a3622;
}

.alert-danger {
  background-color: #f8d7da;
  color: #58151c;
}

.alert-info {
  background-color: #cff4fc;
  color: #055160;
}

/* ===== RESPONSIVE DESIGN ===== */
@media (max-width: 767.98px) {
  .container {
    padding-left: 1rem;
    padding-right: 1rem;
  }
  
  h1 {
    font-size: 2rem;
  }
  
  .card-body {
    padding: 1.5rem 1rem;
  }
  
  .btn-primary.btn-lg {
    width: 100%;
    padding: 1rem;
  }
  
  .col-lg-4 {
    margin-top: 2rem;
  }
}

@media (max-width: 575.98px) {
  .card-header {
    padding: 1rem;
  }
  
  .card-body {
    padding: 1.25rem;
  }
  
  .btn-outline-secondary.btn-sm {
    font-size: 0.8rem;
    padding: 0.5rem 0.75rem;
  }
}

/* ===== ÉTATS DE FOCUS POUR L'ACCESSIBILITÉ ===== */
.btn:focus,
.form-control:focus,
.form-select:focus {
  outline: 2px solid var(--accent-color);
  outline-offset: 2px;
}

/* ===== MICRO-INTERACTIONS ===== */
.card-header {
  position: relative;
  overflow: hidden;
}

.card-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
  transition: left 0.5s;
}

.card:hover .card-header::before {
  left: 100%;
}

/* Effet de pulsation sur les éléments importants */
.badge.bg-success,
.badge.bg-primary {
  animation: pulse 2s infinite;
}

/* ===== PRINT STYLES ===== */
@media print {
  .card {
    box-shadow: none;
    border: 1px solid #dee2e6;
  }
  
  .btn {
    display: none;
  }
  
  .alert {
    border: 1px solid #dee2e6;
  }
}