:root {
  --bg-color: #f8f9fa;
  --text-color: #2c3e50;
  --navbar-bg: #ffffff;
  --link-color: #4f46e5;
  --alert-bg: #e9ecef;
  --alert-text: #2c3e50;
  --card-bg: #ffffff;
  --table-bg: #ffffff;
  --table-border: #edf2f7;
  --input-bg: #ffffff;
  --input-text: #2c3e50;
  --input-border: #e2e8f0;
  --hover-bg: #f8fafc;
  --badge-bg: #e2e8f0;
  --badge-text: #2c3e50;
  --progress-bg: #edf2f7;
  --progress-bar: #4f46e5;
  --btn-primary-bg: #4f46e5;
  --btn-primary-text: #ffffff;
  --btn-secondary-bg: #f1f5f9;
  --btn-secondary-text: #64748b;
  --header-bg: #f8fafc;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

body.dark {
  --bg-color: #111827;
  --text-color: #f3f4f6;
  --navbar-bg: #1f2937;
  --link-color: #818cf8;
  --alert-bg: #1f2937;
  --alert-text: #f3f4f6;
  --card-bg: #1f2937;
  --table-bg: #1f2937;
  --table-border: #374151;
  --input-bg: #111827;
  --input-text: #f3f4f6;
  --input-border: #374151;
  --hover-bg: #2d3748;
  --badge-bg: #374151;
  --badge-text: #f3f4f6;
  --progress-bg: #374151;
  --progress-bar: #818cf8;
  --btn-primary-bg: #818cf8;
  --btn-primary-text: #ffffff;
  --btn-secondary-bg: #374151;
  --btn-secondary-text: #f3f4f6;
  --header-bg: #1f2937;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.5);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.6), 0 2px 4px -1px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.6), 0 4px 6px -2px rgba(0, 0, 0, 0.3);
}

body {
  background-color: var(--bg-color);
  color: var(--text-color);
  transition: all 0.3s ease;
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

.navbar {
  background-color: var(--navbar-bg) !important;
  box-shadow: var(--shadow-sm);
  padding: 1rem;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--table-border);
}

.navbar-brand {
  font-weight: 600;
  color: var(--text-color);
  font-size: 1.25rem;
  letter-spacing: -0.025em;
}

.card {
  background-color: var(--card-bg);
  border: none;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
  border-radius: 1rem;
  overflow: hidden;
}

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

.table {
  color: var(--text-color);
  border-color: var(--table-border);
  margin-bottom: 0;
}

.table > tbody > tr {
  border-bottom: 1px solid var(--table-border) !important;
  background: none !important;
}

.table > tbody > tr:last-child {
  border-bottom: none !important;
}

.table > tbody > tr > td {
  background: none !important;
  border: none !important;
}

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

.table th {
  font-weight: 600;
  background-color: var(--header-bg);
  border-bottom: 2px solid var(--table-border);
  padding: 1rem;
  font-size: 0.875rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.table td {
  padding: 1rem;
  vertical-align: middle;
  border-bottom: 1px solid var(--table-border);
  font-size: 0.875rem;
}

.form-control, .form-select {
  background-color: var(--input-bg);
  border: 2px solid var(--input-border);
  color: var(--input-text);
  padding: 0.75rem 1rem;
  border-radius: 0.75rem;
  font-size: 0.875rem;
  transition: all 0.2s ease;
}

.form-control:focus, .form-select:focus {
  background-color: var(--input-bg);
  border-color: var(--link-color);
  color: var(--input-text);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.btn {
  padding: 0.75rem 1.5rem;
  border-radius: 0.75rem;
  font-weight: 500;
  font-size: 0.875rem;
  transition: all 0.2s ease;
  letter-spacing: 0.025em;
}

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

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
  filter: brightness(110%);
}

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

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

.badge {
  padding: 0.5em 1em;
  font-weight: 500;
  border-radius: 0.5rem;
  font-size: 0.75rem;
  letter-spacing: 0.025em;
}

.badge.bg-success {
  background-color: #10b981 !important;
}

.badge.bg-warning {
  background-color: #f59e0b !important;
}

.badge.bg-secondary {
  background-color: #6b7280 !important;
}

.progress {
  height: 0.75rem;
  background-color: var(--progress-bg);
  border-radius: 1rem;
  overflow: hidden;
}

.progress-bar {
  background-color: var(--progress-bar);
  transition: width 0.6s ease;
}

.task-row {
  cursor: pointer;
  transition: all 0.2s ease;
  border-bottom: 1px solid var(--table-border) !important;
}

.task-row:last-child {
  border-bottom: none !important;
}

.task-row:hover {
  transform: translateY(-2px);
}

.dashboard-header {
  margin-bottom: 2rem;
}

.dashboard-header h1 {
  font-weight: 700;
  color: var(--text-color);
  font-size: 2rem;
  letter-spacing: -0.025em;
  margin-bottom: 0.5rem;
}

.dashboard-header p {
  color: var(--btn-secondary-text);
  font-size: 1rem;
}

.stat-card {
  background-color: var(--card-bg);
  border-radius: 1rem;
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.3s ease;
}

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

.stat-card h3 {
  font-size: 2rem;
  font-weight: 700;
  color: var(--btn-primary-bg);
  margin-bottom: 0.5rem;
  line-height: 1;
}

.stat-card p {
  color: var(--btn-secondary-text);
  font-size: 0.875rem;
  margin: 0;
}

.search-container {
  position: relative;
  margin-bottom: 2rem;
}

.search-input {
  width: 100%;
  padding: 1rem 1rem 1rem 3rem;
  border-radius: 1rem;
  border: 2px solid var(--input-border);
  background-color: var(--input-bg);
  color: var(--input-text);
  font-size: 0.875rem;
  transition: all 0.3s ease;
}

.search-input:focus {
  border-color: var(--btn-primary-bg);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
  outline: none;
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--btn-secondary-text);
  font-size: 1rem;
}

@keyframes fadeIn {
  from {
    opacity: 0;
    transform: translateY(10px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.task-row {
  animation: fadeIn 0.3s ease-out forwards;
}

/* Responsive Design */
@media (max-width: 768px) {
  .btn {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
  }
  
  .table th,
  .table td {
    padding: 0.75rem;
    font-size: 0.875rem;
  }
  
  .dashboard-header h1 {
    font-size: 1.5rem;
  }
  
  .stat-card h3 {
    font-size: 1.5rem;
  }
  
  .search-input {
    padding: 0.75rem 0.75rem 0.75rem 2.5rem;
  }
}

/* Animations pour les interactions */
.btn,
.card,
.stat-card,
.task-row {
  will-change: transform;
}

.btn:active {
  transform: translateY(1px);
}

/* Style du thème sombre amélioré */
body.dark .card,
body.dark .stat-card {
  background-color: var(--card-bg);
  border: 1px solid var(--table-border);
}

body.dark .form-control,
body.dark .form-select,
body.dark .search-input {
  background-color: var(--input-bg);
  border-color: var(--input-border);
  color: var(--input-text);
}

body.dark .table {
  color: var(--text-color);
}

body.dark .table th {
  background-color: var(--header-bg);
  color: var(--text-color);
  border-color: var(--table-border);
}

body.dark .table td {
  border-color: var(--table-border);
  color: var(--text-color);
}

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

body.dark .modal-content {
  background-color: var(--card-bg);
  border-color: var(--table-border);
}

body.dark .modal-header,
body.dark .modal-footer {
  border-color: var(--table-border);
}

body.dark .modal-title {
  color: var(--text-color);
}

body.dark .close {
  color: var(--text-color);
}

body.dark .badge {
  border: 1px solid var(--table-border);
}

body.dark .badge.bg-success {
  background-color: #059669 !important;
  color: #ffffff;
}

body.dark .badge.bg-warning {
  background-color: #d97706 !important;
  color: #ffffff;
}

body.dark .badge.bg-secondary {
  background-color: #4b5563 !important;
  color: #ffffff;
}

body.dark .progress {
  background-color: var(--progress-bg);
}

body.dark .btn-close {
  filter: invert(1) grayscale(100%) brightness(200%);
}

body.dark .search-icon {
  color: var(--text-color);
  opacity: 0.7;
}

body.dark .dashboard-header h1,
body.dark .dashboard-header p {
  color: var(--text-color);
}

/* Amélioration des contrastes pour les statuts */
body.dark .badge.needs-action {
  background-color: #4b5563;
  color: #ffffff;
}

body.dark .badge.in-process {
  background-color: #d97706;
  color: #ffffff;
}

body.dark .badge.completed {
  background-color: #059669;
  color: #ffffff;
}

/* Effets de focus améliorés */
.form-control:focus,
.form-select:focus,
.search-input:focus {
  outline: none;
  border-color: var(--btn-primary-bg);
  box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

/* Ajustements spécifiques pour le thème sombre */
body.dark .text-muted {
  color: #9ca3af !important;
}

body.dark .task-row {
  background-color: var(--card-bg);
  border-bottom: 1px solid var(--table-border) !important;
}

body.dark .task-row:last-child {
  border-bottom: none !important;
}

body.dark .task-row:hover {
  background-color: var(--hover-bg);
}

body.dark #theme-toggle {
  color: #ffffff;
}

body.dark #theme-toggle i {
  color: #ffffff;
}

/* Amélioration du contraste des cellules du tableau */
body.dark .table > tbody > tr > td {
  background-color: var(--card-bg);
  color: var(--text-color);
  border-bottom: 1px solid var(--table-border);
}

body.dark .table > tbody > tr {
  border-bottom: 1px solid var(--table-border);
}

body.dark .table > tbody > tr:last-child {
  border-bottom: none;
}

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

/* Assurer que le texte reste lisible même sur fond sombre */
body.dark .table {
  background-color: var(--bg-color);
}

body.dark .table > thead > tr > th {
  background-color: var(--bg-color);
  color: var(--text-color);
}

/* Ajustements spécifiques pour le thème sombre */
body.dark .card-header .card-title {
  color: var(--text-color);
} 

body.dark .table > tbody > tr {
  border-bottom: 1px solid var(--table-border) !important;
  background: none !important;
}

body.dark .table > tbody > tr:hover {
  background-color: var(--hover-bg) !important;
}

.instance-selector {
    width: 100%;
    margin-bottom: 1rem;
}

.instance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    gap: 8px;
    padding: 12px;
    border: 2px solid var(--table-border);
    border-radius: 8px;
    background-color: var(--card-bg);
}

.instance-cell {
    padding: 8px 12px;
    border: 2px solid var(--table-border);
    background-color: var(--input-bg);
    cursor: pointer;
    user-select: none;
    transition: all 0.15s ease;
    border-radius: 6px;
    font-size: 0.9rem;
    color: var(--text-color);
    text-align: center;
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 40px;
}

.instance-cell.selected {
    background-color: var(--btn-primary-bg);
    color: white;
    border-color: var(--btn-primary-bg);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.instance-cell:hover {
    border-color: var(--btn-primary-bg);
    background-color: var(--hover-bg);
    transform: translateY(-1px);
}

.instance-cell:active {
    transform: translateY(0);
}

.instance-cell.selected:hover {
    background-color: var(--btn-primary-bg);
    filter: brightness(110%);
}