/**
 * Form Multi-Step CSS
 * Styles pour formulaires multi-étapes avec progress indicator
 */

/* ============================================================================
   PROGRESS INDICATOR
   ============================================================================ */

.form-progress-container {
    margin-bottom: 30px;
}

.form-progress-bar {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 20px;
    position: relative;
}

/* Ligne de progression */
.form-progress-bar::before {
    content: '';
    position: absolute;
    top: 20px;
    left: 0;
    right: 0;
    height: 2px;
    background: #e9ecef;
    z-index: -1;
}

/* Étapes */
.form-step-indicator {
    display: flex;
    align-items: center;
    gap: 10px;
    flex: 1;
    position: relative;
    z-index: 1;
}

.form-step-circle {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: #e9ecef;
    color: #495057;
    font-weight: bold;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    border: 2px solid #e9ecef;
}

.form-step-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: #495057;
    white-space: nowrap;
    transition: color 0.3s ease;
}

/* État actif */
.form-step-indicator.active .form-step-circle {
    background: #0d6efd;
    color: white;
    border-color: #0d6efd;
    box-shadow: 0 0 0 3px rgba(13, 110, 253, 0.15);
    transform: scale(1.1);
}

.form-step-indicator.active .form-step-label {
    color: #0d6efd;
    font-weight: 700;
}

/* État complété */
.form-step-indicator.completed .form-step-circle {
    background: #28a745;
    color: white;
    border-color: #28a745;
}

.form-step-indicator.completed .form-step-label {
    color: #28a745;
}

.form-step-indicator.completed .form-step-circle::after {
    content: '✓';
    font-size: 1.2rem;
    font-weight: bold;
}

/* État futur/grisé */
.form-step-indicator .form-step-circle {
    cursor: pointer;
}

.form-step-indicator:not(.active):not(.completed) .form-step-circle:hover {
    border-color: #0d6efd;
    box-shadow: 0 0 0 2px rgba(13, 110, 253, 0.1);
}

/* Barre de pourcentage */
.form-progress-fill {
    position: absolute;
    top: 21px;
    left: 0;
    height: 2px;
    background: linear-gradient(90deg, #0d6efd, #0d6efd);
    transition: width 0.4s ease;
    z-index: 0;
}

/* ============================================================================
   FORM STEPS CONTAINER
   ============================================================================ */

.form-steps-container {
    position: relative;
}

.form-step {
    display: none;
    animation: fadeIn 0.3s ease-in-out;
    padding: 20px 0;
}

.form-step.active {
    display: block;
}

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

/* ============================================================================
   FORM ACTIONS
   ============================================================================ */

.form-actions {
    display: flex;
    gap: 10px;
    justify-content: space-between;
    align-items: center;
    margin-top: 30px;
    padding-top: 20px;
    border-top: 1px solid #dee2e6;
}

.form-actions-left {
    display: flex;
    gap: 10px;
}

.form-actions-right {
    display: flex;
    gap: 10px;
}

.form-action-status {
    font-size: 0.9rem;
    color: #6c757d;
    font-style: italic;
}

/* Boutons */
.btn-form-step {
    padding: 0.5rem 1.5rem;
    font-weight: 600;
    transition: all 0.3s ease;
    border-radius: 6px;
}

.btn-form-prev {
    background: #6c757d;
    color: white;
    border: none;
}

.btn-form-prev:hover {
    background: #5a6268;
    transform: translateX(-2px);
}

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

.btn-form-next {
    background: #0d6efd;
    color: white;
    border: none;
}

.btn-form-next:hover {
    background: #0b5ed7;
    transform: translateX(2px);
}

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

.btn-form-submit {
    background: linear-gradient(135deg, #28a745, #20c997);
    color: white;
    border: none;
    padding: 0.65rem 2rem;
    font-weight: 700;
    font-size: 1rem;
}

.btn-form-submit:hover {
    background: linear-gradient(135deg, #20c997, #17a2b8);
    transform: scale(1.05);
}

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

.btn-form-submit.loading {
    position: relative;
    color: transparent;
}

.btn-form-submit.loading::after {
    content: '';
    position: absolute;
    width: 16px;
    height: 16px;
    top: 50%;
    left: 50%;
    margin-left: -8px;
    margin-top: -8px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spinner 0.6s linear infinite;
}

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

/* ============================================================================
   FORM VALIDATION
   ============================================================================ */

.form-group {
    position: relative;
    margin-bottom: 1.5rem;
}

.form-control:focus {
    border-color: #0d6efd;
    box-shadow: 0 0 0 0.2rem rgba(13, 110, 253, 0.25);
}

/* État invalide */
.form-control.is-invalid {
    border-color: #dc3545;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 12 12' width='12' height='12' fill='none' stroke='%23dc3545' viewBox='0 0 12 12'%3e%3ccircle cx='6' cy='6' r='4.5'/%3e%3cpath fill='%23dc3545' d='M8 4a.5.5 0 0 0-.5-.5h-3a.5.5 0 0 0 0 1h3A.5.5 0 0 0 8 4z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
    padding-right: calc(1.5em + 0.75rem);
}

.form-control.is-invalid:focus {
    border-color: #dc3545;
    box-shadow: 0 0 0 0.2rem rgba(220, 53, 69, 0.25);
}

/* État valide */
.form-control.is-valid {
    border-color: #28a745;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 8 8'%3e%3cpath fill='%2328a745' d='M2.3 6.73L.6 4.53c-.4-1.04.46-1.4 1.1-.8l1.1 1.4 3.4-3.8c.6-.63 1.6-.27 1.2.7l-4 4.6c-.43.5-.8.4-1.1.1z'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right calc(0.375em + 0.1875rem) center;
    background-size: calc(0.75em + 0.375rem) calc(0.75em + 0.375rem);
    padding-right: calc(1.5em + 0.75rem);
}

.form-control.is-valid:focus {
    border-color: #28a745;
    box-shadow: 0 0 0 0.2rem rgba(40, 167, 69, 0.25);
}

/* Messages de validation */
.invalid-feedback,
.valid-feedback {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.invalid-feedback {
    color: #dc3545;
}

.valid-feedback {
    color: #28a745;
}

.form-control.is-invalid ~ .invalid-feedback {
    display: block;
    animation: slideDown 0.3s ease;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-5px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================================================
   STEP HEADER
   ============================================================================ */

.form-step-header {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    border-left: 4px solid #0d6efd;
    padding: 20px;
    margin-bottom: 25px;
    border-radius: 8px;
    display: flex;
    align-items: center;
    gap: 15px;
}

.form-step-header-icon {
    font-size: 1.8rem;
    color: #0d6efd;
}

.form-step-header-content h4 {
    margin: 0 0 5px 0;
    color: #212529;
    font-weight: 700;
}

.form-step-header-content p {
    margin: 0;
    font-size: 0.9rem;
    color: #6c757d;
}

/* ============================================================================
   RESPONSIVE
   ============================================================================ */

@media (max-width: 768px) {
    .form-progress-bar {
        flex-wrap: wrap;
        gap: 10px;
    }

    .form-step-indicator {
        flex-basis: calc(50% - 7px);
    }

    .form-progress-bar::before {
        display: none;
    }

    .form-actions {
        flex-direction: column;
        gap: 10px;
    }

    .form-actions-left,
    .form-actions-right {
        width: 100%;
        flex-direction: column;
    }

    .btn-form-step {
        width: 100%;
    }

    .form-step-label {
        font-size: 0.8rem;
    }

    .form-step-circle {
        width: 35px;
        height: 35px;
        font-size: 0.85rem;
    }

    .form-step-header {
        flex-direction: column;
        text-align: center;
    }
}

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

@media print {
    .form-progress-container,
    .form-actions {
        display: none;
    }

    .form-step {
        display: block !important;
        page-break-inside: avoid;
    }
}