/* Classi di utilità */
.d-flex {
    display: flex;
}

.flex-column {
    flex-direction: column;
}

.flex-row {
    flex-direction: row;
}

.justify-center {
    justify-content: center;
}

.justify-between {
    justify-content: space-between;
}

.align-center {
    align-items: center;
}

.align-start {
    align-items: flex-start;
}

.text-center {
    text-align: center;
}

.w-100 {
    width: 100%;
}

.h-100 {
    height: 100%;
}

.mb-0 {
    margin-bottom: 0;
}

.mb-1 {
    margin-bottom: 0.25rem;
}

.mb-2 {
    margin-bottom: 0.5rem;
}

.mb-3 {
    margin-bottom: 1rem;
}

.mb-4 {
    margin-bottom: 1.5rem;
}

.mt-0 {
    margin-top: 0;
}

.mt-1 {
    margin-top: 0.25rem;
}

.mt-2 {
    margin-top: 0.5rem;
}

.mt-3 {
    margin-top: 1rem;
}

.mt-4 {
    margin-top: 1.5rem;
}

.mx-auto {
    margin-left: auto;
    margin-right: auto;
}

.p-0 {
    padding: 0;
}

.p-1 {
    padding: 0.25rem;
}

.p-2 {
    padding: 0.5rem;
}

.p-3 {
    padding: 1rem;
}

.p-4 {
    padding: 1.5rem;
}

.rounded {
    border-radius: var(--border-radius-md);
}

.text-danger {
    color: var(--color-error);
}

.border {
    border: 1px solid var(--color-border);
}

.overflow-auto {
    overflow: auto;
}

.position-relative {
    position: relative;
}

.gradient-border {
    position: relative;
    border-radius: var(--border-radius-md);
}

.gradient-border::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(135deg, var(--color-accent-primary), var(--color-accent-secondary));
    border-radius: calc(var(--border-radius-md) + 2px);
    z-index: -1;
}

.blue-gradient-border::before {
    background: linear-gradient(135deg, #3b82f6, #60a5fa);
}

.red-gradient-border::before {
    background: linear-gradient(135deg, #ef4444, #f87171);
}