/* Styles modernes pour les formulaires */
:root {
    --form-primary: #3b82f6;
    --form-primary-hover: #2563eb;
    --form-success: #10b981;
    --form-warning: #f59e0b;
    --form-danger: #ef4444;
    --form-info: #06b6d4;
    
    --form-bg: #1e293b;
    --form-bg-hover: #334155;
    --form-border: #475569;
    --form-border-focus: #3b82f6;
    --form-text: #f8fafc;
    --form-text-muted: #94a3b8;
    --form-placeholder: #64748b;
    
    --form-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --form-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --form-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    --form-radius: 0.75rem;
    --form-radius-lg: 1rem;
    --form-transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Conteneur principal du formulaire */
.form-container {
    background: linear-gradient(135deg, var(--form-bg), #0f172a);
    border-radius: var(--form-radius-lg);
    padding: 2rem;
    box-shadow: var(--form-shadow-xl);
    border: 1px solid var(--form-border);
    position: relative;
    overflow: hidden;
}

.form-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 4px;
    background: linear-gradient(90deg, var(--form-primary), var(--form-success), var(--form-warning));
    border-radius: var(--form-radius-lg) var(--form-radius-lg) 0 0;
}

/* En-tête du formulaire */
.form-header {
    text-align: center;
    margin-bottom: 2rem;
    padding-bottom: 1.5rem;
    border-bottom: 2px solid var(--form-border);
}

.form-header h2 {
    color: var(--form-text);
    font-size: 1.875rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, var(--form-primary), var(--form-success));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.form-header p {
    color: var(--form-text-muted);
    font-size: 1.125rem;
    margin: 0;
}

/* Groupes de champs */
.form-group {
    margin-bottom: 1.5rem;
    position: relative;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--form-text);
    font-weight: 600;
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Champs de saisie */
.form-control {
    width: 100%;
    padding: 1rem 1.25rem;
    font-size: 1rem;
    line-height: 1.5;
    color: var(--form-text);
    background-color: var(--form-bg);
    border: 2px solid var(--form-border);
    border-radius: var(--form-radius);
    transition: var(--form-transition);
    box-shadow: var(--form-shadow);
    position: relative;
}

.form-control:focus {
    outline: none;
    border-color: var(--form-border-focus);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
    background-color: var(--form-bg-hover);
    transform: translateY(-2px);
}

.form-control:hover {
    border-color: var(--form-border-focus);
    background-color: var(--form-bg-hover);
}

.form-control::placeholder {
    color: var(--form-placeholder);
    opacity: 0.7;
}

/* Taille des champs */
.form-control-lg {
    padding: 1.25rem 1.5rem;
    font-size: 1.125rem;
    border-radius: var(--form-radius-lg);
}

.form-control-sm {
    padding: 0.75rem 1rem;
    font-size: 0.875rem;
    border-radius: var(--form-radius);
}

/* États des champs */
.form-control.is-valid {
    border-color: var(--form-success);
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.1);
}

.form-control.is-invalid {
    border-color: var(--form-danger);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Messages de validation */
.valid-feedback {
    display: block;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: var(--form-success);
    font-weight: 500;
}

.invalid-feedback {
    display: block;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: var(--form-danger);
    font-weight: 500;
}

/* Boutons */
.form-container .btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    vertical-align: middle;
    cursor: pointer;
    -webkit-user-select: none;
    user-select: none;
    border: 2px solid transparent;
    border-radius: var(--form-radius);
    transition: var(--form-transition);
    box-shadow: var(--form-shadow);
    position: relative;
    overflow: hidden;
}

.form-container .btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.form-container .btn:hover::before {
    left: 100%;
}

.form-container .btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.25);
}

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

/* Variantes de boutons */
/* Suppression des styles personnalisés pour .btn-primary pour utiliser le style global */

.form-container .btn-success {
    background: linear-gradient(135deg, var(--form-success), #059669);
    border-color: var(--form-success);
    color: white;
}

.form-container .btn-success:hover {
    background: linear-gradient(135deg, #059669, var(--form-success));
    transform: translateY(-2px);
    box-shadow: var(--form-shadow-lg);
}

.form-container .btn-danger {
    background: linear-gradient(135deg, var(--form-danger), #dc2626);
    border-color: var(--form-danger);
    color: white;
}

.form-container .btn-danger:hover {
    background: linear-gradient(135deg, #dc2626, var(--form-danger));
    transform: translateY(-2px);
    box-shadow: var(--form-shadow-lg);
}

.form-container .btn-outline-secondary {
    background: transparent;
    border-color: var(--form-border);
    color: var(--form-text-muted);
}

.form-container .btn-outline-secondary:hover {
    background: var(--form-border);
    border-color: var(--form-border);
    color: var(--form-text);
    transform: translateY(-2px);
}

/* Tailles de boutons */
.form-container .btn-lg {
    padding: 1.125rem 2.5rem;
    font-size: 1.125rem;
    border-radius: var(--form-radius-lg);
}

.form-container .btn-sm {
    padding: 0.625rem 1.5rem;
    font-size: 0.875rem;
    border-radius: var(--form-radius);
}

/* Icônes dans les boutons */
.form-container .btn i {
    margin-right: 0.5rem;
    font-size: 1.1em;
}

/* Grille de formulaire */
.form-row {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1.5rem;
    margin-bottom: 1.5rem;
}

.form-col {
    display: flex;
    flex-direction: column;
}

/* Séparateurs */
.form-divider {
    height: 2px;
    background: linear-gradient(90deg, transparent, var(--form-border), transparent);
    margin: 2rem 0;
    border-radius: 1px;
}

/* Tooltips personnalisés */
.form-container .tooltip {
    position: relative;
    display: inline-block;
}

.form-container .tooltip .tooltiptext {
    visibility: hidden;
    width: 200px;
    background-color: var(--form-bg);
    color: var(--form-text);
    text-align: center;
    border-radius: var(--form-radius);
    padding: 0.5rem;
    position: absolute;
    z-index: 1;
    bottom: 125%;
    left: 50%;
    margin-left: -100px;
    opacity: 0;
    transition: opacity 0.3s;
    border: 1px solid var(--form-border);
    box-shadow: var(--form-shadow-lg);
}

.form-container .tooltip:hover .tooltiptext {
    visibility: visible;
    opacity: 1;
}

/* Animations d'entrée */
@keyframes formSlideIn {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.form-container {
    animation: formSlideIn 0.6s ease-out;
}

/* Responsive */
@media (max-width: 768px) {
    .form-container {
        padding: 1.5rem;
        margin: 1rem;
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 1rem;
    }
    
    .btn {
        width: 100%;
        margin-bottom: 0.5rem;
    }
    
    .form-control-lg {
        padding: 1rem 1.25rem;
        font-size: 1rem;
    }
}

/* États de chargement */
.form-loading {
    position: relative;
    pointer-events: none;
}

.form-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid var(--form-border);
    border-top: 2px solid var(--form-primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Champs avec icônes */
.form-container .input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.form-container .input-group-icon {
    position: absolute;
    left: 1rem;
    color: var(--form-text-muted);
    z-index: 2;
}

.form-container .input-group .form-control {
    padding-left: 3rem;
}

/* Champs de recherche */
.form-container .search-input {
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M21 21l-6-6m2-5a7 7 0 11-14 0 7 7 0 0114 0z'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: 1rem center;
    background-size: 1.25rem;
    padding-left: 3rem;
}

/* Champs de fichier stylisés */
.file-input-wrapper {
    position: relative;
    display: inline-block;
    width: 100%;
}

.file-input-wrapper input[type=file] {
    position: absolute;
    left: -9999px;
}

.file-input-label {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 1rem;
    background: var(--form-bg);
    border: 2px dashed var(--form-border);
    border-radius: var(--form-radius);
    cursor: pointer;
    transition: var(--form-transition);
    text-align: center;
}

.file-input-label:hover {
    border-color: var(--form-border-focus);
    background: var(--form-bg-hover);
}

.file-input-label i {
    font-size: 2rem;
    color: var(--form-text-muted);
    margin-bottom: 0.5rem;
}

/* Champs de sélection améliorés */
.form-container select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 24 24' stroke='%2394a3b8'%3E%3Cpath stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M19 9l-7 7-7-7'%3E%3C/path%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 1rem center;
    background-size: 1rem;
    padding-right: 3rem;
}

/* Champs de date et heure */
.form-container input[type="date"].form-control,
.form-container input[type="time"].form-control {
    position: relative;
}

.form-container input[type="date"].form-control::-webkit-calendar-picker-indicator,
.form-container input[type="time"].form-control::-webkit-calendar-picker-indicator {
    filter: invert(1);
    cursor: pointer;
}

/* Champs de checkbox et radio stylisés */
.form-container .form-check {
    display: flex;
    align-items: center;
    margin-bottom: 1rem;
}

.form-container .form-check-input {
    width: 1.25rem;
    height: 1.25rem;
    margin-right: 0.75rem;
    cursor: pointer;
    accent-color: var(--form-primary);
}

.form-container .form-check-label {
    color: var(--form-text);
    cursor: pointer;
    -webkit-user-select: none;
    user-select: none;
}

/* Champs de texte avec compteur de caractères */
.form-container .char-counter {
    position: absolute;
    bottom: -1.5rem;
    right: 0;
    font-size: 0.75rem;
    color: var(--form-text-muted);
}

.form-container .char-counter.near-limit {
    color: var(--form-warning);
}

.form-container .char-counter.at-limit {
    color: var(--form-danger);
}

/* Responsive Design pour les formulaires */
@media (max-width: 768px) {
    .form-container {
        padding: 1.5rem;
        border-radius: var(--form-radius);
    }
    
    .form-header h2 {
        font-size: 1.5rem;
    }
    
    .form-header p {
        font-size: 1rem;
    }
    
    .form-group {
        margin-bottom: 1.25rem;
    }
    
    .form-control {
        padding: 0.875rem 1rem;
        font-size: 0.95rem;
    }
    
    /* Groupes de boutons empilés sur mobile */
    .button-group {
        flex-direction: column;
    }
    
    .button-group .btn {
        width: 100%;
        margin-bottom: 0.75rem;
    }
    
    .button-group .btn:last-child {
        margin-bottom: 0;
    }
}

@media (max-width: 480px) {
    .form-container {
        padding: 1rem;
    }
    
    .form-header h2 {
        font-size: 1.25rem;
    }
    
    .form-header p {
        font-size: 0.9rem;
    }
    
    .form-control {
        padding: 0.75rem;
        font-size: 0.9rem;
    }
    
    .btn {
        padding: 0.75rem 1rem;
        font-size: 0.9rem;
    }
}