/* Validações visuais e feedback aprimorado */

.form-control.is-valid {
    border-color: #27ae60;
    box-shadow: 0 0 0 0.2rem rgba(39, 174, 96, 0.25);
}

.form-control.is-invalid {
    border-color: #e74c3c;
    box-shadow: 0 0 0 0.2rem rgba(231, 76, 60, 0.25);
}

.form-control.is-valid:focus {
    border-color: #27ae60;
    box-shadow: 0 0 0 0.2rem rgba(39, 174, 96, 0.25);
}

.form-control.is-invalid:focus {
    border-color: #e74c3c;
    box-shadow: 0 0 0 0.2rem rgba(231, 76, 60, 0.25);
}

/* Loading states */
.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
}

.spinner-border-sm {
    width: 1rem;
    height: 1rem;
}

/* Alertas aprimorados */
.alert {
    border: none;
    border-radius: 8px;
    position: relative;
}

.alert-success {
    background: linear-gradient(135deg, #d4edda 0%, #c3e6cb 100%);
    color: #155724;
    border-left: 4px solid #27ae60;
}

.alert-danger {
    background: linear-gradient(135deg, #f8d7da 0%, #f5c6cb 100%);
    color: #721c24;
    border-left: 4px solid #e74c3c;
}

.alert-warning {
    background: linear-gradient(135deg, #fff3cd 0%, #ffeaa7 100%);
    color: #856404;
    border-left: 4px solid #f39c12;
}

.alert-info {
    background: linear-gradient(135deg, #d1ecf1 0%, #bee5eb 100%);
    color: #0c5460;
    border-left: 4px solid #17a2b8;
}

.alert-icon {
    font-size: 1.2em;
    margin-right: 0.5rem;
}

.alert-title {
    font-weight: 600;
    margin-bottom: 0.25rem;
}

.alert-message {
    margin: 0;
}

/* File upload feedback */
.file-upload-label.has-file {
    border-color: #27ae60;
    background-color: #f0f9f0;
}

.file-upload-label.has-file .file-upload-icon {
    color: #27ae60;
}

#fileName {
    margin-top: 0.5rem;
    padding: 0.5rem;
    background: #f8f9fa;
    border-radius: 6px;
    border: 1px solid #dee2e6;
    font-size: 0.9em;
}

/* Form helper text colors */
.form-helper-text {
    font-size: 0.85em;
    margin-top: 0.25rem;
}

/* Required field indicator */
.required {
    color: #e74c3c;
    font-weight: 600;
}

/* Progress indicator */
.progress-container {
    margin: 1rem 0;
}

.progress-bar {
    transition: width 0.3s ease;
}

/* Loading overlay */
.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

.loading-content {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.loading-spinner {
    width: 3rem;
    height: 3rem;
    margin-bottom: 1rem;
}