/* ================================
   Anti-Duplicate Submit Button Styles
   ================================ */

/* Stato di disabilitazione durante il submit */
.btn.disabled,
.btn:disabled,
button[disabled] {
    opacity: 0.7;
    cursor: not-allowed !important;
    pointer-events: none;
}

/* Animazione dello spinner */
.spinner-border-sm {
    width: 1rem;
    height: 1rem;
    border-width: 0.2em;
}

.spinner-border {
    animation: spin 0.75s linear infinite;
}

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

/* Stile per il bottone in loading */
.btn.loading {
    min-width: 200px;
    transition: all 0.3s ease;
}

/* Feedback visivo per il bottone */
.btn {
    transition: all 0.3s ease;
}

.btn-primary:not(:disabled):hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 123, 255, 0.4);
}

.btn-primary:not(:disabled):active {
    transform: translateY(0);
}

/* Stato di successo */
.btn-success {
    background-color: #28a745 !important;
    border-color: #28a745 !important;
    animation: pulse-success 0.6s ease-out;
}

@keyframes pulse-success {
    0% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(40, 167, 69, 0.7);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(40, 167, 69, 0);
    }
    100% {
        transform: scale(1);
        box-shadow: 0 0 0 0 rgba(40, 167, 69, 0);
    }
}

/* Stato di errore */
.btn-danger {
    background-color: #dc3545 !important;
    border-color: #dc3545 !important;
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

/* Indicatore visivo per form invalido */
.form-control.is-invalid,
.form-select.is-invalid {
    border-color: #dc3545;
}

.invalid-feedback {
    display: block;
    color: #dc3545;
    font-size: 0.875rem;
    margin-top: 0.25rem;
}