/**
 * 🚀 Styles - Dashboard Admin Moderne
 * Interface de gestion avancée avec monitoring temps réel
 */

/* ============================================================================ */
/* VARIABLES CSS */
/* ============================================================================ */

:root {
  --primary-color: #3b82f6;
  --primary-dark: #2563eb;
  --secondary-color: #8b5cf6;
  --success-color: #10b981;
  --warning-color: #f59e0b;
  --danger-color: #ef4444;
  --info-color: #06b6d4;
  
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-tertiary: #f1f5f9;
  --bg-dark: #1e293b;
  --bg-darker: #0f172a;
  
  --text-primary: #1e293b;
  --text-secondary: #64748b;
  --text-muted: #94a3b8;
  --text-inverse: #ffffff;
  
  --border-color: #e2e8f0;
  --border-light: #f1f5f9;
  --border-dark: #cbd5e1;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
  
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ============================================================================ */
/* RESET ET BASE */
/* ============================================================================ */

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

body {
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  background-color: var(--bg-secondary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
}

/* ============================================================================ */
/* LAYOUT PRINCIPAL */
/* ============================================================================ */

.admin-dashboard {
  display: flex;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  width: 280px;
  background: var(--bg-dark);
  color: var(--text-inverse);
  position: fixed;
  left: 0;
  top: 0;
  bottom: 0;
  z-index: 1000;
  transition: var(--transition);
  overflow-y: auto;
}

.sidebar-header {
  padding: 2rem 1.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

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

.logo img {
  width: 32px;
  height: 32px;
}

.logo span {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text-inverse);
}

.sidebar-nav {
  padding: 1rem 0;
}

.nav-list {
  list-style: none;
}

.nav-item {
  margin-bottom: 0.25rem;
}

.nav-link {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.875rem 1.5rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: var(--transition);
  position: relative;
}

.nav-link:hover {
  background: rgba(255, 255, 255, 0.05);
  color: var(--text-inverse);
}

.nav-item.active .nav-link {
  background: var(--primary-color);
  color: var(--text-inverse);
}

.nav-item.active .nav-link::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 4px;
  background: var(--text-inverse);
}

.nav-link i {
  width: 20px;
  text-align: center;
}

.badge {
  background: var(--danger-color);
  color: var(--text-inverse);
  font-size: 0.75rem;
  padding: 0.125rem 0.5rem;
  border-radius: 12px;
  margin-left: auto;
  min-width: 20px;
  text-align: center;
}

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

/* Main Content */
.main-content {
  flex: 1;
  margin-left: 280px;
  transition: var(--transition);
}

.sidebar-collapsed .main-content {
  margin-left: 0;
}

.sidebar-collapsed .sidebar {
  transform: translateX(-100%);
}

/* Header */
.header {
  background: var(--bg-primary);
  border-bottom: 1px solid var(--border-color);
  padding: 1rem 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  position: sticky;
  top: 0;
  z-index: 100;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.sidebar-toggle {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.sidebar-toggle:hover {
  background: var(--bg-secondary);
  color: var(--text-primary);
}

.page-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.search-bar {
  position: relative;
  display: flex;
  align-items: center;
}

.search-bar i {
  position: absolute;
  left: 0.75rem;
  color: var(--text-muted);
}

.search-bar input {
  padding: 0.5rem 0.75rem 0.5rem 2.5rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
  width: 250px;
  transition: var(--transition);
}

.search-bar input:focus {
  outline: none;
  border-color: var(--primary-color);
  background: var(--bg-primary);
}

.notifications {
  position: relative;
}

.notification-btn {
  background: none;
  border: none;
  font-size: 1.125rem;
  color: var(--text-secondary);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--radius-md);
  transition: var(--transition);
  position: relative;
}

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

.notification-dot {
  position: absolute;
  top: 0.25rem;
  right: 0.25rem;
  width: 8px;
  height: 8px;
  background: var(--danger-color);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

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

.user-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  overflow: hidden;
}

.user-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.user-info {
  display: flex;
  flex-direction: column;
}

.user-name {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 0.875rem;
}

.user-role {
  color: var(--text-muted);
  font-size: 0.75rem;
}

/* Content Container */
.content-container {
  padding: 2rem;
}

.content-section {
  display: none;
}

.content-section.active {
  display: block;
  animation: fadeIn 0.3s ease;
}

/* ============================================================================ */
/* STATISTICS CARDS */
/* ============================================================================ */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.stat-card {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 1rem;
}

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

.stat-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--text-inverse);
}

.stat-card:nth-child(1) .stat-icon {
  background: linear-gradient(135deg, #3b82f6, #2563eb);
}

.stat-card:nth-child(2) .stat-icon {
  background: linear-gradient(135deg, #10b981, #059669);
}

.stat-card:nth-child(3) .stat-icon {
  background: linear-gradient(135deg, #8b5cf6, #7c3aed);
}

.stat-card:nth-child(4) .stat-icon {
  background: linear-gradient(135deg, #f59e0b, #d97706);
}

.stat-content {
  flex: 1;
}

.stat-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

.stat-change {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.125rem 0.5rem;
  border-radius: 12px;
}

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

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

/* ============================================================================ */
/* CHARTS */
/* ============================================================================ */

.charts-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.chart-card {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

.chart-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.chart-card canvas {
  max-height: 300px;
}

/* ============================================================================ */
/* RECENT ACTIVITIES */
/* ============================================================================ */

.recent-activities {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

.recent-activities h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.activity-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.activity-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 0.75rem;
  border-radius: var(--radius-md);
  transition: var(--transition);
}

.activity-item:hover {
  background: var(--bg-secondary);
}

.activity-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-tertiary);
  color: var(--primary-color);
}

.activity-content {
  flex: 1;
}

.activity-description {
  color: var(--text-primary);
  font-size: 0.875rem;
  margin-bottom: 0.25rem;
}

.activity-time {
  color: var(--text-muted);
  font-size: 0.75rem;
}

/* ============================================================================ */
/* SECTION HEADERS */
/* ============================================================================ */

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 2rem;
}

.section-header h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

.section-actions {
  display: flex;
  gap: 0.75rem;
}

/* ============================================================================ */
/* FILTERS */
/* ============================================================================ */

.validations-filters {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
}

.validations-filters select {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-primary);
  color: var(--text-primary);
  min-width: 150px;
}

/* ============================================================================ */
/* VALIDATIONS GRID */
/* ============================================================================ */

.validations-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 1.5rem;
}

.validation-card {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}

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

.validation-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.validation-header h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
}

.validation-status {
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 500;
}

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

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

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

.validation-status.status-disputed {
  background: rgba(139, 92, 246, 0.1);
  color: var(--secondary-color);
}

.validation-info {
  margin-bottom: 1rem;
}

.validation-info p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 0.25rem;
}

.validation-info strong {
  color: var(--text-primary);
}

/* AI Analysis */
.ai-analysis {
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  padding: 1rem;
  margin-bottom: 1rem;
}

.ai-score {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}

.score-bar {
  flex: 1;
  height: 8px;
  background: var(--border-light);
  border-radius: 4px;
  overflow: hidden;
}

.score-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--success-color), var(--primary-color));
  transition: width 0.3s ease;
}

.anomalies {
  font-size: 0.75rem;
  color: var(--warning-color);
}

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

/* ============================================================================ */
/* TABLES */
/* ============================================================================ */

.disputes-table-container,
.payments-table-container {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  overflow-x: auto;
}

.disputes-table,
.payments-table {
  width: 100%;
  border-collapse: collapse;
}

.disputes-table th,
.payments-table th {
  text-align: left;
  padding: 1rem;
  border-bottom: 2px solid var(--border-color);
  color: var(--text-primary);
  font-weight: 600;
  font-size: 0.875rem;
}

.disputes-table td,
.payments-table td {
  padding: 1rem;
  border-bottom: 1px solid var(--border-light);
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.disputes-table tr:hover,
.payments-table tr:hover {
  background: var(--bg-secondary);
}

.status-badge {
  padding: 0.25rem 0.75rem;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 500;
}

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

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

/* ============================================================================ */
/* PROVIDERS GRID */
/* ============================================================================ */

.providers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 1.5rem;
}

.provider-card {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  transition: var(--transition);
}

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

.provider-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.provider-avatar {
  width: 50px;
  height: 50px;
  border-radius: 50%;
  overflow: hidden;
}

.provider-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.provider-info h4 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.provider-status {
  padding: 0.125rem 0.5rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 500;
}

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

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

.provider-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-bottom: 1.5rem;
}

.stat-item {
  text-align: center;
  padding: 0.75rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
}

.stat-label {
  display: block;
  color: var(--text-muted);
  font-size: 0.75rem;
  margin-bottom: 0.25rem;
}

.stat-value {
  display: block;
  color: var(--text-primary);
  font-size: 1.125rem;
  font-weight: 600;
}

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

/* ============================================================================ */
/* AI INSIGHTS */
/* ============================================================================ */

.ai-insights-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 1.5rem;
}

.ai-card {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

.ai-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.ai-metric {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.metric-value {
  font-size: 2rem;
  font-weight: 700;
  color: var(--primary-color);
  min-width: 80px;
  text-align: right;
}

.metric-bar {
  flex: 1;
  height: 12px;
  background: var(--border-light);
  border-radius: 6px;
  overflow: hidden;
}

.anomaly-stats {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.anomaly-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.75rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
}

.anomaly-label {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

.anomaly-count {
  font-weight: 600;
  color: var(--text-primary);
  font-size: 1.125rem;
}

.recommendations-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.recommendation-item {
  display: flex;
  gap: 1rem;
  padding: 1rem;
  background: var(--bg-secondary);
  border-radius: var(--radius-md);
  border-left: 4px solid var(--primary-color);
}

.recommendation-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--primary-color);
  color: var(--text-inverse);
  flex-shrink: 0;
}

.recommendation-content h5 {
  font-size: 1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.recommendation-content p {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

.recommendation-priority {
  padding: 0.125rem 0.5rem;
  border-radius: 12px;
  font-size: 0.75rem;
  font-weight: 500;
  text-transform: uppercase;
}

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

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

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

/* ============================================================================ */
/* PAYMENTS */
/* ============================================================================ */

.payments-summary {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.summary-card {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
  text-align: center;
}

.summary-card h4 {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-bottom: 0.5rem;
}

.summary-value {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
}

/* ============================================================================ */
/* SETTINGS */
/* ============================================================================ */

.settings-container {
  max-width: 1200px;
}

.settings-container h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 2rem;
}

.settings-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
}

.settings-card {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--border-light);
}

.settings-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 1.5rem;
}

.settings-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group label {
  font-weight: 500;
  color: var(--text-primary);
  font-size: 0.875rem;
}

.form-group input,
.form-group select,
.form-group textarea {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-secondary);
  color: var(--text-primary);
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--primary-color);
  background: var(--bg-primary);
}

.form-group input[type="checkbox"] {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  cursor: pointer;
}

/* ============================================================================ */
/* BUTTONS */
/* ============================================================================ */

.btn {
  padding: 0.5rem 1rem;
  border: none;
  border-radius: var(--radius-md);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

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

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

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

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-primary);
}

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

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

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

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

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

/* ============================================================================ */
/* MODALS */
/* ============================================================================ */

.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.5);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 2000;
}

.modal {
  background: var(--bg-primary);
  border-radius: var(--radius-xl);
  padding: 2rem;
  max-width: 600px;
  width: 90%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
}

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

.modal-header h3 {
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--text-primary);
}

.modal-close {
  background: none;
  border: none;
  font-size: 1.25rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: var(--radius-md);
  transition: var(--transition);
}

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

.modal-body {
  margin-bottom: 1.5rem;
}

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

/* ============================================================================ */
/* TOAST NOTIFICATIONS */
/* ============================================================================ */

.toast {
  position: fixed;
  top: 20px;
  right: 20px;
  padding: 1rem 1.5rem;
  border-radius: var(--radius-lg);
  color: var(--text-inverse);
  font-size: 0.875rem;
  font-weight: 500;
  box-shadow: var(--shadow-lg);
  z-index: 3000;
  transform: translateX(100%);
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 0.75rem;
  min-width: 250px;
}

.toast.show {
  transform: translateX(0);
}

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

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

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

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

/* ============================================================================ */
/* ANIMATIONS */
/* ============================================================================ */

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

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

@keyframes slideIn {
  from {
    transform: translateX(-100%);
  }
  to {
    transform: translateX(0);
  }
}

/* ============================================================================ */
/* RESPONSIVE */
/* ============================================================================ */

@media (max-width: 1200px) {
  .sidebar {
    width: 240px;
  }
  
  .main-content {
    margin-left: 240px;
  }
  
  .stats-grid {
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  }
  
  .charts-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
  }
  
  .main-content {
    margin-left: 0;
  }
  
  .sidebar-collapsed .sidebar {
    transform: translateX(0);
    width: 100%;
    max-width: 280px;
  }
  
  .header {
    padding: 1rem;
  }
  
  .header-right {
    gap: 1rem;
  }
  
  .search-bar input {
    width: 150px;
  }
  
  .user-info {
    display: none;
  }
  
  .content-container {
    padding: 1rem;
  }
  
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 1rem;
  }
  
  .validations-grid,
  .providers-grid,
  .ai-insights-grid {
    grid-template-columns: 1fr;
  }
  
  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }
  
  .section-actions {
    width: 100%;
    justify-content: flex-start;
  }
  
  .validations-filters {
    flex-direction: column;
  }
  
  .validations-filters select {
    width: 100%;
  }
  
  .validation-actions,
  .provider-actions {
    flex-direction: column;
  }
  
  .payments-summary {
    grid-template-columns: repeat(2, 1fr);
  }
  
  .settings-grid {
    grid-template-columns: 1fr;
  }
  
  .modal {
    padding: 1.5rem;
    margin: 1rem;
  }
  
  .modal-footer {
    flex-direction: column;
  }
  
  .disputes-table-container,
  .payments-table-container {
    padding: 1rem;
  }
  
  .disputes-table th,
  .payments-table th,
  .disputes-table td,
  .payments-table td {
    padding: 0.5rem;
    font-size: 0.75rem;
  }
}

@media (max-width: 480px) {
  .header-left {
    gap: 0.5rem;
  }
  
  .page-title {
    font-size: 1.25rem;
  }
  
  .search-bar {
    display: none;
  }
  
  .stat-card {
    padding: 1rem;
  }
  
  .stat-icon {
    width: 50px;
    height: 50px;
    font-size: 1.25rem;
  }
  
  .stat-value {
    font-size: 1.5rem;
  }
  
  .chart-card {
    padding: 1rem;
  }
  
  .validation-card,
  .provider-card,
  .ai-card {
    padding: 1rem;
  }
  
  .provider-stats {
    grid-template-columns: 1fr;
  }
  
  .payments-summary {
    grid-template-columns: 1fr;
  }
}

/* ============================================================================ */
/* ACCESSIBILITY */
/* ============================================================================ */

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

.btn:focus,
input:focus,
textarea:focus,
select:focus {
  outline: 2px solid var(--primary-color);
  outline-offset: 2px;
}

/* High contrast mode */
@media (prefers-contrast: high) {
  :root {
    --border-color: #000000;
    --text-secondary: #000000;
    --bg-secondary: #ffffff;
  }
}

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

.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }

.d-none { display: none; }
.d-block { display: block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.5rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }

.p-0 { padding: 0; }
.p-1 { padding: 0.5rem; }
.p-2 { padding: 1rem; }
.p-3 { padding: 1.5rem; }

.w-full { width: 100%; }
.h-full { height: 100%; }