/**
 * Styles pour le plugin LearnDash Course Filter & Sorter
 * CSS3 moderne et responsive
 */

/* Conteneur principal */
.ld-course-filter-container {
    background: linear-gradient(135deg, #f8fafc 0%, #e2e8f0 100%);
    border-radius: 12px;
    padding: 2rem;
    margin-bottom: 2rem;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.ld-course-filter-container:hover {
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.08);
}

/* Formulaire */
.ld-course-filter-form {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    align-items: end;
}

/* Groupes de filtres */
.ld-filter-group {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.ld-filter-label {
    font-size: 0.875rem;
    font-weight: 600;
    color: #4a5568;
    margin-bottom: 0.25rem;
    display: block;
}

/* Champs de formulaire */
.ld-filter-input,
.ld-filter-select {
    width: 100%;
    padding: 0.875rem 1rem;
    font-size: 1rem;
    line-height: 1.5;
    color: #2d3748;
    background-color: #ffffff;
    border: 2px solid #e2e8f0;
    border-radius: 8px;
    transition: all 0.2s ease;
    box-sizing: border-box;
}

.ld-filter-input:focus,
.ld-filter-select:focus {
    outline: none;
    border-color: #4299e1;
    box-shadow: 0 0 0 3px rgba(66, 153, 225, 0.15);
    background-color: #ffffff;
}

.ld-filter-input::placeholder {
    color: #a0aec0;
    opacity: 0.8;
}

/* Aide textuelle */
.ld-filter-help {
    font-size: 0.75rem;
    color: #718096;
    margin: 0.25rem 0 0 0;
    opacity: 0.8;
}

/* Boutons */
.ld-filter-actions {
    display: flex;
    align-items: end;
}

.ld-filter-button {
    padding: 0.875rem 1.75rem;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.5;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
    width: 100%;
    text-align: center;
}

.ld-button-reset {
    background: linear-gradient(135deg, #edf2f7 0%, #e2e8f0 100%);
    color: #4a5568;
    border: 2px solid #cbd5e0;
}

.ld-button-reset:hover {
    background: linear-gradient(135deg, #e2e8f0 0%, #cbd5e0 100%);
    color: #2d3748;
    border-color: #a0aec0;
    transform: translateY(-1px);
}

.ld-button-reset:active {
    transform: translateY(0);
}

.ld-button-reset:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(113, 128, 150, 0.3);
}

/* Statut */
.ld-filter-status {
    margin-top: 1.5rem;
    padding: 1rem;
    background-color: #ffffff;
    border-radius: 8px;
    border-left: 4px solid #4299e1;
    font-size: 0.875rem;
    color: #4a5568;
    min-height: 1.5em;
}

/* Message aucun résultat */
.ld-no-results-message {
    background: linear-gradient(135deg, #fff5f5 0%, #fed7d7 100%);
    border: 1px solid #fc8181;
    border-radius: 8px;
    padding: 2rem;
    margin: 2rem 0;
    text-align: center;
    color: #c53030;
    font-weight: 600;
    font-size: 1.125rem;
    animation: slideIn 0.3s ease;
}



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

/* Animation des cours */
.ld-course-item {
    transition: all 0.3s ease;
    animation: fadeInUp 0.4s ease;
}

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

/* Sticky sur mobile */
@media (max-width: 768px) {
    .ld-filter-sticky-mobile {
        position: sticky;
        top: 0;
        z-index: 100;
        margin-bottom: 1rem;
        border-radius: 0;
        box-shadow: 0 4px 6px rgba(0, 0, 0, 0.1);
    }
    
    .ld-course-filter-form {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .ld-filter-actions {
        margin-top: 0.5rem;
    }
}

/* Tablette */
@media (min-width: 769px) and (max-width: 1024px) {
    .ld-course-filter-form {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* Desktop large */
@media (min-width: 1025px) {
    .ld-course-filter-form {
        grid-template-columns: 2fr 1fr auto;
    }
}

/* Améliorations pour les états focus et hover */
.ld-filter-input:hover,
.ld-filter-select:hover {
    border-color: #cbd5e0;
}

.ld-filter-input:disabled,
.ld-filter-select:disabled {
    background-color: #f7fafc;
    cursor: not-allowed;
    opacity: 0.6;
}

/* Améliorations d'accessibilité */
.ld-filter-input:focus-visible,
.ld-filter-select:focus-visible,
.ld-filter-button:focus-visible {
    outline: 2px solid #3182ce;
    outline-offset: 2px;
}

/* Support pour le mode somme */
@media (prefers-color-scheme: dark) {
    .ld-course-filter-container {
        background: linear-gradient(135deg, #2d3748 0%, #4a5568 100%);
        border-color: #4a5568;
    }
    
    .ld-filter-label {
        color: #e2e8f0;
    }
    
    .ld-filter-input,
    .ld-filter-select {
        background-color: #1a202c;
        border-color: #4a5568;
        color: #e2e8f0;
    }
    
    .ld-filter-input:focus,
    .ld-filter-select:focus {
        background-color: #1a202c;
    }
    
    .ld-button-reset {
        background: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);
        color: #e2e8f0;
        border-color: #4a5568;
    }
    
    .ld-filter-status {
        background-color: #2d3748;
        color: #e2e8f0;
    }
    
    .ld-no-results-message {
        background: linear-gradient(135deg, #742a2a 0%, #553c3c 100%);
        border-color: #742a2a;
        color: #fed7d7;
    }
}

/* Impression */
@media print {
    .ld-course-filter-container {
        display: none;
    }
}