/* ============================================================
   NEXUS — Components CSS Premium
   Cartes, boutons, badges, notifications, modals, tableaux
   Version corrigée avec accessibilité et cohérence renforcées
   ============================================================ */

/* ---------- Cartes ---------- */
.card {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
    position: relative;
}

.card:hover {
    border-color: var(--color-border-light);
    box-shadow: var(--shadow-md);
}

.card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--spacing-md);
    gap: var(--spacing-sm);
}

.card-title {
    font-size: var(--font-size-base);
    font-weight: 600;
    color: var(--color-text-primary);
}

.card-subtitle {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

.card-body {
    color: var(--color-text-secondary);
}

.card-footer {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Carte statistique */
.stat-card {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.stat-card-value {
    font-size: var(--font-size-3xl);
    font-weight: 700;
    color: var(--color-text-primary);
    line-height: 1;
}

.stat-card-label {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-card-trend {
    font-size: var(--font-size-xs);
    display: flex;
    align-items: center;
    gap: 4px;
}

.stat-card-trend.up { color: var(--color-success); }
.stat-card-trend.down { color: var(--color-error); }

/* ---------- Boutons ---------- */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 500;
    transition: background-color var(--transition-fast), 
                color var(--transition-fast),
                box-shadow var(--transition-fast),
                transform var(--transition-fast);
    cursor: pointer;
    white-space: nowrap;
    border: 1px solid transparent;
}

.btn:active:not(:disabled) {
    transform: scale(0.97);
}

.btn:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

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

.btn-primary:hover:not(:disabled) {
    background-color: var(--color-accent-hover);
    border-color: var(--color-accent-hover);
    box-shadow: 0 0 12px rgba(0, 212, 170, 0.3);
}

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

.btn-secondary:hover:not(:disabled) {
    background-color: var(--color-bg-hover);
    border-color: var(--color-border-light);
}

.btn-danger {
    background-color: var(--color-error);
    color: white;
    border-color: var(--color-error);
}

.btn-danger:hover:not(:disabled) {
    background-color: #ff6b61;
    border-color: #ff6b61;
    box-shadow: 0 0 12px rgba(248, 81, 73, 0.3);
}

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

.btn-success:hover:not(:disabled) {
    box-shadow: 0 0 12px rgba(46, 160, 67, 0.3);
}

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

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

.btn-ghost:hover:not(:disabled) {
    background-color: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.btn-sm {
    padding: 4px 10px;
    font-size: var(--font-size-xs);
}

.btn-lg {
    padding: var(--spacing-md) var(--spacing-lg);
    font-size: var(--font-size-base);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

/* ---------- Badges ---------- */
.badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    padding: 2px 10px;
    border-radius: var(--radius-full);
    font-size: var(--font-size-xs);
    font-weight: 600;
    letter-spacing: 0.3px;
    line-height: 1.5;
}

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

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

.badge-error { 
    background-color: var(--color-error-bg); 
    color: var(--color-error); 
}

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

.badge-accent { 
    background-color: var(--color-accent-bg); 
    color: var(--color-accent); 
}

.badge-dot {
    width: 6px;
    height: 6px;
    border-radius: var(--radius-full);
    background-color: currentColor;
    flex-shrink: 0;
}

/* ---------- Notifications ---------- */
.notification-container {
    position: fixed;
    top: 76px;
    right: var(--spacing-lg);
    z-index: var(--z-notification);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    max-width: 400px;
    width: calc(100% - 32px);
    pointer-events: none; /* Permet de cliquer à travers le conteneur */
}

.notification {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    background-color: var(--color-surface);
    border: 1px solid var(--color-border);
    box-shadow: var(--shadow-lg);
    cursor: pointer;
    transition: box-shadow var(--transition-base), 
                transform var(--transition-base),
                opacity var(--transition-base);
    pointer-events: auto; /* Réactive les clics sur les notifications */
}

.notification:hover {
    box-shadow: var(--shadow-lg), 0 0 12px rgba(0, 0, 0, 0.4);
}

.notification-success { border-left: 3px solid var(--color-success); }
.notification-info { border-left: 3px solid var(--color-info); }
.notification-warning { border-left: 3px solid var(--color-warning); }
.notification-error { border-left: 3px solid var(--color-error); }
.notification-security {
    border-left: 3px solid var(--color-error);
    background-color: var(--color-error-bg);
}

.notification-icon {
    flex-shrink: 0;
    margin-top: 2px;
    color: var(--color-text-secondary);
}

.notification-success .notification-icon { color: var(--color-success); }
.notification-info .notification-icon { color: var(--color-info); }
.notification-warning .notification-icon { color: var(--color-warning); }
.notification-error .notification-icon,
.notification-security .notification-icon { color: var(--color-error); }

.notification-content { 
    flex: 1; 
    min-width: 0; 
}

.notification-title {
    font-size: var(--font-size-sm);
    font-weight: 600;
    color: var(--color-text-primary);
}

.notification-message {
    font-size: var(--font-size-xs);
    color: var(--color-text-secondary);
    margin-top: 2px;
    word-break: break-word;
}

.notification-close {
    color: var(--color-text-tertiary);
    cursor: pointer;
    padding: 4px;
    flex-shrink: 0;
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast),
                background-color var(--transition-fast);
}

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

.notification-close:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: 2px;
}

/* ---------- Modals ---------- */
.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: var(--z-modal);
    animation: fadeIn var(--transition-fast) ease;
    padding: var(--spacing-md);
}

.modal {
    background-color: var(--color-surface);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-xl);
    padding: var(--spacing-xl);
    max-width: 500px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: var(--shadow-lg);
    animation: slideInUp var(--transition-base) ease;
    position: relative;
}

.modal-title {
    font-size: var(--font-size-xl);
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    letter-spacing: -0.3px;
}

.modal-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

/* ---------- Tableaux ---------- */
.table-container {
    overflow-x: auto;
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    -webkit-overflow-scrolling: touch;
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--font-size-sm);
}

.table th {
    background-color: var(--color-bg-tertiary);
    color: var(--color-text-secondary);
    font-weight: 600;
    text-align: left;
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 2px solid var(--color-border);
    white-space: nowrap;
    text-transform: uppercase;
    font-size: var(--font-size-xs);
    letter-spacing: 0.5px;
    position: sticky;
    top: 0;
    z-index: 1;
}

.table td {
    padding: var(--spacing-sm) var(--spacing-md);
    border-bottom: 1px solid var(--color-border);
    color: var(--color-text-primary);
    transition: background-color var(--transition-fast);
}

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

.table tbody tr {
    transition: background-color var(--transition-fast);
}

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

.table tbody tr.selected td {
    background-color: var(--color-accent-bg);
}

.table tbody tr:focus-visible td {
    outline: 2px solid var(--color-accent);
    outline-offset: -2px;
}

/* ---------- États ---------- */
.loading-state {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xl);
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
}

.loading-spinner {
    width: 20px;
    height: 20px;
    border: 2px solid var(--color-border);
    border-top-color: var(--color-accent);
    border-radius: var(--radius-full);
    animation: spin 0.8s linear infinite;
    flex-shrink: 0;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

/* Empty State */
.empty-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-2xl);
    text-align: center;
}

.empty-state-icon {
    font-size: var(--font-size-3xl);
    opacity: 0.4;
    line-height: 1;
}

.empty-state-text {
    color: var(--color-text-tertiary);
    font-size: var(--font-size-sm);
}

/* Error State */
.error-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-2xl);
    text-align: center;
    color: var(--color-error);
}

.error-state-icon {
    font-size: var(--font-size-3xl);
    line-height: 1;
}

.error-state-text {
    color: var(--color-error);
    font-size: var(--font-size-sm);
}

/* Offline State */
.offline-state {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-2xl);
    text-align: center;
    color: var(--color-warning);
}

/* ---------- Inputs ---------- */
.input {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    transition: border-color var(--transition-fast),
                box-shadow var(--transition-fast);
}

.input:focus {
    border-color: var(--color-accent);
    outline: none;
    box-shadow: 0 0 0 3px var(--color-accent-bg);
}

.input::placeholder {
    color: var(--color-text-tertiary);
}

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

.select {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    background-color: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    color: var(--color-text-primary);
    font-size: var(--font-size-sm);
    cursor: pointer;
    transition: border-color var(--transition-fast),
                box-shadow var(--transition-fast);
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7683' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 12px center;
    padding-right: 36px;
}

.select:focus {
    border-color: var(--color-accent);
    outline: none;
    box-shadow: 0 0 0 3px var(--color-accent-bg);
}

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

/* ---------- Progress ---------- */
.progress-bar {
    width: 100%;
    height: 6px;
    background-color: var(--color-bg-tertiary);
    border-radius: var(--radius-full);
    overflow: hidden;
}

.progress-fill {
    height: 100%;
    background-color: var(--color-accent);
    border-radius: var(--radius-full);
    transition: width var(--transition-base) ease;
}

/* ---------- Tabs ---------- */
.tabs {
    display: flex;
    gap: 2px;
    border-bottom: 1px solid var(--color-border);
    margin-bottom: var(--spacing-lg);
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.tab {
    padding: var(--spacing-sm) var(--spacing-md);
    color: var(--color-text-secondary);
    font-size: var(--font-size-sm);
    border-bottom: 2px solid transparent;
    transition: color var(--transition-fast),
                border-color var(--transition-fast);
    cursor: pointer;
    white-space: nowrap;
    background: none;
    border-top: none;
    border-left: none;
    border-right: none;
}

.tab:hover {
    color: var(--color-text-primary);
}

.tab:focus-visible {
    outline: 2px solid var(--color-accent);
    outline-offset: -2px;
    border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.tab.active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

/* ---------- Tooltips ---------- */
.tooltip {
    position: relative;
}

.tooltip::after {
    content: attr(data-tooltip);
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(-4px);
    background-color: var(--color-bg-hover);
    color: var(--color-text-primary);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    font-size: var(--font-size-xs);
    white-space: nowrap;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition-fast),
                transform var(--transition-fast);
    z-index: var(--z-tooltip);
    border: 1px solid var(--color-border-light);
}

.tooltip::before {
    content: '';
    position: absolute;
    bottom: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(4px);
    border: 5px solid transparent;
    border-top-color: var(--color-border-light);
    opacity: 0;
    transition: opacity var(--transition-fast),
                transform var(--transition-fast);
    z-index: var(--z-tooltip);
}

.tooltip:hover::after,
.tooltip:hover::before,
.tooltip:focus-visible::after,
.tooltip:focus-visible::before {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
}

/* ---------- Responsive ---------- */
@media (max-width: 480px) {
    .notification-container {
        top: 64px;
        right: 8px;
        left: 8px;
        max-width: none;
    }
    
    .modal {
        padding: var(--spacing-md);
        max-height: 95vh;
    }
    
    .btn-lg {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: var(--font-size-sm);
    }
    
    .card {
        padding: var(--spacing-md);
    }
    
    .modal-actions {
        flex-direction: column-reverse;
    }
    
    .modal-actions .btn {
        width: 100%;
    }
}

/* ---------- Accessibilité ---------- */
@media (prefers-reduced-motion: reduce) {
    .notification,
    .modal,
    .btn,
    .card,
    .tab,
    .tooltip::after,
    .tooltip::before {
        transition: none !important;
        animation: none !important;
    }
}

/* ---------- Impression ---------- */
@media print {
    .notification-container,
    .modal-overlay,
    .tooltip {
        display: none !important;
    }
    
    .card {
        break-inside: avoid;
        box-shadow: none;
        border: 1px solid #ddd;
    }
    
    .table th {
        background-color: #f5f5f5;
        color: #333;
    }
    
    .table td {
        color: #333;
        border-bottom: 1px solid #ddd;
    }
}