/* ===========================================
   DARK MODE - SUPPORT COMPLET ET MODULAIRE
   =========================================== */

/* Variables CSS complètes pour le dark mode */
[data-theme="dark"] {
    /* Couleurs de base */
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --bg-muted: #475569;
    --bg-dark: #020617;

    /* Couleurs de texte */
    --text-primary: #f8fafc;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --text-light: #f1f5f9;
    --text-white: #ffffff;

    /* Couleurs de bordure */
    --border-color: #334155;
    --border-light: #475569;
    --border-dark: #1e293b;

    /* Couleurs des boutons */
    --button-primary: #6366f1;
    --button-primary-hover: #5855eb;
    --button-secondary: #4b5563;
    --button-secondary-hover: #374151;

    /* Couleurs des états */
    --success-color: #10b981;
    --success-light: #064e3b;
    --warning-color: #f59e0b;
    --warning-light: #92400e;
    --error-color: #ef4444;
    --error-light: #991b1b;
    --info-color: #3b82f6;
    --info-light: #1e3a8a;

    /* Ombres pour dark mode */
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.5);
    --shadow: 0 1px 3px 0 rgb(0 0 0 / 0.4), 0 1px 2px -1px rgb(0 0 0 / 0.4);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.4), 0 2px 4px -2px rgb(0 0 0 / 0.4);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.4), 0 4px 6px -4px rgb(0 0 0 / 0.4);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.4), 0 8px 10px -6px rgb(0 0 0 / 0.4);

    /* Dégradés pour dark mode */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #10b981 100%);
    --gradient-secondary: linear-gradient(135deg, #1e293b 0%, #334155 100%);
    --gradient-accent: linear-gradient(135deg, #10b981 0%, #6366f1 100%);

    /* Couleurs spécifiques aux composants */
    --card-bg: #1e293b;
    --card-border: #334155;
    --input-bg: #334155;
    --input-border: #475569;
    --input-focus-border: #6366f1;
    --modal-bg: #1e293b;
    --dropdown-bg: #1e293b;
    --dropdown-border: #334155;
    --table-border: #334155;
    --navbar-bg: #0f172a;
    --navbar-border: #334155;
    --footer-bg: #0f172a;
    --alert-bg: #334155;
    --badge-bg: #475569;
}

/* ===========================================
   APPLICATION DES STYLES DARK MODE
   =========================================== */

/* Corps de la page */
[data-theme="dark"] body {
    background-color: var(--bg-primary);
    color: var(--text-primary);
}

/* Navigation */
[data-theme="dark"] .navbar {
    background: var(--navbar-bg) !important;
    border-bottom: 1px solid var(--navbar-border);
    box-shadow: var(--shadow-sm);
}

[data-theme="dark"] .navbar.bg-white {
    background: var(--navbar-bg) !important;
}

[data-theme="dark"] .navbar-brand,
[data-theme="dark"] .nav-link {
    color: var(--text-primary) !important;
}

[data-theme="dark"] .nav-link:hover {
    color: var(--button-primary) !important;
}

[data-theme="dark"] .navbar-toggler {
    border-color: var(--border-color) !important;
    background-color: var(--bg-tertiary) !important;
}

[data-theme="dark"] .navbar-toggler-icon {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 30 30'%3e%3cpath stroke='rgba(248, 250, 252, 0.75)' stroke-linecap='round' stroke-miterlimit='10' stroke-width='2' d='M4 7h22M4 15h22M4 23h22'/%3e%3c/svg%3e") !important;
}

[data-theme="dark"] .dropdown-menu {
    background: var(--dropdown-bg);
    border: 1px solid var(--dropdown-border);
    box-shadow: var(--shadow-lg);
}

[data-theme="dark"] .dropdown-item {
    color: var(--text-primary);
}

[data-theme="dark"] .dropdown-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

[data-theme="dark"] .dropdown-divider {
    border-top-color: var(--border-color);
}

/* Cartes */
[data-theme="dark"] .card {
    background: var(--card-bg);
    border: 1px solid var(--card-border);
    color: var(--text-primary);
}

[data-theme="dark"] .card-header {
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--card-border);
    color: var(--text-primary);
}

[data-theme="dark"] .card-footer {
    background: var(--bg-tertiary);
    border-top: 1px solid var(--card-border);
}

/* Formulaires */
[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
    background: var(--input-bg);
    border: 1px solid var(--input-border);
    color: var(--text-primary);
}

[data-theme="dark"] .form-control:focus,
[data-theme="dark"] .form-select:focus {
    background: var(--input-bg);
    border-color: var(--input-focus-border);
    color: var(--text-primary);
    box-shadow: 0 0 0 0.2rem rgba(99, 102, 241, 0.25);
}

[data-theme="dark"] .form-control::placeholder {
    color: var(--text-muted);
}

[data-theme="dark"] .form-label {
    color: var(--text-primary);
}

/* Boutons */
[data-theme="dark"] .btn-primary {
    background: var(--button-primary);
    border-color: var(--button-primary);
    color: white;
}

[data-theme="dark"] .btn-primary:hover {
    background: var(--button-primary-hover);
    border-color: var(--button-primary-hover);
}

[data-theme="dark"] .btn-secondary {
    background: var(--button-secondary);
    border-color: var(--button-secondary);
    color: var(--text-primary);
}

[data-theme="dark"] .btn-secondary:hover {
    background: var(--button-secondary-hover);
    border-color: var(--button-secondary-hover);
}

[data-theme="dark"] .btn-outline-primary {
    color: var(--button-primary);
    border-color: var(--button-primary);
}

[data-theme="dark"] .btn-outline-primary:hover {
    background: var(--button-primary);
    border-color: var(--button-primary);
    color: white;
}

[data-theme="dark"] .btn-link {
    color: var(--text-primary);
}

[data-theme="dark"] .btn-link:hover {
    color: var(--button-primary);
}

/* Tableaux */
[data-theme="dark"] .table {
    color: var(--text-primary);
}

[data-theme="dark"] .table thead th {
    background: var(--bg-tertiary);
    border-bottom: 2px solid var(--table-border);
    color: var(--text-secondary);
}

[data-theme="dark"] .table tbody tr {
    border-bottom: 1px solid var(--table-border);
}

[data-theme="dark"] .table tbody tr:hover {
    background: var(--bg-tertiary);
}

/* Alertes */
[data-theme="dark"] .alert {
    background: var(--alert-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .alert-primary {
    background: rgba(99, 102, 241, 0.1);
    border-color: var(--button-primary);
    color: var(--text-primary);
}

[data-theme="dark"] .alert-success {
    background: rgba(16, 185, 129, 0.1);
    border-color: var(--success-color);
    color: var(--text-primary);
}

[data-theme="dark"] .alert-warning {
    background: rgba(245, 158, 11, 0.1);
    border-color: var(--warning-color);
    color: var(--text-primary);
}

[data-theme="dark"] .alert-danger {
    background: rgba(239, 68, 68, 0.1);
    border-color: var(--error-color);
    color: var(--text-primary);
}

/* Dropdowns */
[data-theme="dark"] .dropdown-menu {
    background: var(--dropdown-bg);
    border: 1px solid var(--dropdown-border);
}

[data-theme="dark"] .dropdown-item {
    color: var(--text-primary);
}

[data-theme="dark"] .dropdown-item:hover {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

[data-theme="dark"] .dropdown-divider {
    border-top-color: var(--border-color);
}

/* Modals */
[data-theme="dark"] .modal-content {
    background: var(--modal-bg);
    color: var(--text-primary);
}

[data-theme="dark"] .modal-header {
    border-bottom: 1px solid var(--border-color);
}

[data-theme="dark"] .modal-footer {
    border-top: 1px solid var(--border-color);
}

/* Badges */
[data-theme="dark"] .badge {
    background: var(--badge-bg);
    color: var(--text-primary);
}

[data-theme="dark"] .badge.bg-primary {
    background: var(--button-primary) !important;
}

[data-theme="dark"] .badge.bg-success {
    background: var(--success-color) !important;
}

[data-theme="dark"] .badge.bg-warning {
    background: var(--warning-color) !important;
}

[data-theme="dark"] .badge.bg-danger {
    background: var(--error-color) !important;
}

/* Pagination */
[data-theme="dark"] .pagination .page-link {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .pagination .page-link:hover {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .pagination .page-item.active .page-link {
    background: var(--button-primary);
    border-color: var(--button-primary);
}

/* Listes et éléments de navigation */
[data-theme="dark"] .list-group-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .list-group-item:hover {
    background: var(--bg-tertiary);
}

/* Onglets */
[data-theme="dark"] .nav-tabs .nav-link {
    color: var(--text-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .nav-tabs .nav-link:hover {
    color: var(--text-primary);
    border-color: var(--border-light);
}

[data-theme="dark"] .nav-tabs .nav-link.active {
    background: var(--bg-secondary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

/* Accordéons */
[data-theme="dark"] .accordion-item {
    background: var(--card-bg);
    border: 1px solid var(--border-color);
}

[data-theme="dark"] .accordion-button {
    background: var(--card-bg);
    color: var(--text-primary);
    border: none;
}

[data-theme="dark"] .accordion-button:not(.collapsed) {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

[data-theme="dark"] .accordion-body {
    background: var(--card-bg);
    color: var(--text-primary);
}

/* Tooltips et popovers */
[data-theme="dark"] .tooltip-inner {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

[data-theme="dark"] .popover {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
}

[data-theme="dark"] .popover-header {
    background: var(--bg-dark);
    border-bottom-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .popover-body {
    color: var(--text-primary);
}

/* Barre de progression */
[data-theme="dark"] .progress {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .progress-bar {
    background: var(--button-primary);
}

/* Toggle du thème */
[data-theme="dark"] #theme-toggle {
    color: var(--text-primary);
}

[data-theme="dark"] #theme-toggle:hover {
    color: var(--button-primary);
}

/* Texte muted */
[data-theme="dark"] .text-muted {
    color: var(--text-muted) !important;
}

/* Liens */
[data-theme="dark"] a:not(.btn):not(.nav-link):not(.dropdown-item) {
    color: var(--button-primary);
}

[data-theme="dark"] a:not(.btn):not(.nav-link):not(.dropdown-item):hover {
    color: var(--button-primary-hover);
}

/* Transitions fluides */
[data-theme="dark"] *,
[data-theme="dark"] *::before,
[data-theme="dark"] *::after {
    transition: background-color 0.3s ease, border-color 0.3s ease, color 0.3s ease;
}

/* ===========================================
   ACCESSIBILITÉ - WCAG 2.1 AA
   =========================================== */

/* Focus visible pour tous les éléments interactifs */
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 2px solid var(--input-focus-border);
    outline-offset: 2px;
}

/* Contraste amélioré pour les liens */
a:not(.btn) {
    text-decoration: underline;
    color: var(--button-primary);
}

a:not(.btn):hover,
a:not(.btn):focus {
    color: var(--button-primary);
    opacity: 0.8;
}

/* Indicateurs visuels pour les états */
.btn:focus,
.form-control:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.3);
}

/* Skip links pour la navigation clavier */
.skip-link {
    position: absolute;
    top: -40px;
    left: 6px;
    background: var(--button-primary);
    color: white;
    padding: 8px;
    text-decoration: none;
    z-index: 1000;
    border-radius: 4px;
}

.skip-link:focus {
    top: 6px;
}

/* Réduction de mouvement pour les utilisateurs sensibles */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }
}

/* Mode haute contraste */
@media (prefers-contrast: high) {
    :root {
        --text-primary: #ffffff;
        --bg-primary: #000000;
        --bg-secondary: #000000;
        --border-light: #ffffff;
        --button-primary: #ffffff;
    }

    .btn-primary {
        background: #ffffff;
        color: #000000;
        border: 2px solid #ffffff;
    }

    .card {
        border: 2px solid #ffffff;
    }
}

/* ===========================================
   RESPONSIVE DESIGN - MOBILE FIRST
   =========================================== */

/* Tablettes et mobiles */
@media (max-width: 768px) {
    .hero-section {
        padding: 2rem 1rem;
        min-height: auto;
    }

    .hero-title {
        font-size: 2rem;
        line-height: 1.2;
    }

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

    .form-row {
        flex-direction: column;
    }

    .form-group {
        width: 100%;
    }

    .table-responsive {
        font-size: 0.875rem;
    }

    .btn-group-sm .btn {
        padding: 0.25rem 0.5rem;
        font-size: 0.75rem;
    }

    /* Navigation mobile améliorée */
    .navbar-nav {
        margin-top: 1rem;
    }

    .navbar-nav .nav-item {
        margin-bottom: 0.5rem;
    }

    /* Cards empilées sur mobile */
    .card-deck {
        flex-direction: column;
    }

    .card-deck .card {
        margin-bottom: 1rem;
    }
}

/* Petits mobiles */
@media (max-width: 480px) {
    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .hero-title {
        font-size: 1.75rem;
    }

    .hero-subtitle {
        font-size: 1rem;
    }

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

    /* Tables simplifiées sur mobile */
    .table th,
    .table td {
        padding: 0.5rem;
        font-size: 0.8rem;
    }

    .table .btn {
        padding: 0.25rem 0.5rem;
        font-size: 0.75rem;
    }
}

/* ===========================================
   PERFORMANCE - OPTIMISATIONS
   =========================================== */

/* Contenu au-dessus de la ligne de flottaison */
.above-fold {
    content-visibility: auto;
    contain-intrinsic-size: 0 500px;
}

/* Images lazy loading */
img[loading="lazy"] {
    opacity: 0;
    transition: opacity 0.3s ease;
}

img[loading="lazy"].loaded {
    opacity: 1;
}

/* Animations GPU accélérées */
.animate-fade-in {
    animation: fadeIn 0.3s ease-out;
    will-change: opacity;
}

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

/* ===========================================
   PRINT STYLES
   =========================================== */

@media print {
    .no-print {
        display: none !important;
    }

    .navbar,
    .footer,
    .btn,
    .pagination {
        display: none !important;
    }

    .card {
        border: 1px solid #000 !important;
        break-inside: avoid;
    }

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

    .table th,
    .table td {
        border: 1px solid #000;
        padding: 0.5rem;
    }
}