/* Sottoinsieme leggero di Bootstrap 5 per il layout */
:root {
    --bs-body-font-family: "Calibri", "Segoe UI", -apple-system, BlinkMacSystemFont, "Helvetica Neue", sans-serif;
    --bs-body-color: #212529;
    --bs-body-bg: #f5f7fb;
    --bs-link-color: #0d6efd;
    --bs-border-color: #dee2e6;
    --bs-gutter-x: 1.5rem;
}

*,
*::before,
*::after {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: var(--bs-body-font-family);
    color: var(--bs-body-color);
    background-color: var(--bs-body-bg);
}

.container {
    width: 100%;
    padding-right: calc(var(--bs-gutter-x) * 0.5);
    padding-left: calc(var(--bs-gutter-x) * 0.5);
    margin-right: auto;
    margin-left: auto;
}

@media (min-width: 576px) {
    .container {
        max-width: 540px;
    }
}

@media (min-width: 768px) {
    .container {
        max-width: 720px;
    }
}

@media (min-width: 992px) {
    .container {
        max-width: 960px;
    }
}

@media (min-width: 1200px) {
    .container {
        max-width: 1140px;
    }
}

.row {
    display: flex;
    flex-wrap: wrap;
    margin-right: calc(var(--bs-gutter-x) * -0.5);
    margin-left: calc(var(--bs-gutter-x) * -0.5);
}

.col {
    flex: 1 0 0%;
    padding-right: calc(var(--bs-gutter-x) * 0.5);
    padding-left: calc(var(--bs-gutter-x) * 0.5);
}

.col-12 {
    flex: 0 0 auto;
    width: 100%;
    padding-right: calc(var(--bs-gutter-x) * 0.5);
    padding-left: calc(var(--bs-gutter-x) * 0.5);
}

.col-md-6 {
    flex: 0 0 auto;
    width: 100%;
    padding-right: calc(var(--bs-gutter-x) * 0.5);
    padding-left: calc(var(--bs-gutter-x) * 0.5);
}

@media (min-width: 768px) {
    .col-md-6 {
        width: 50%;
    }
}

.col-lg-4 {
    flex: 0 0 auto;
    width: 100%;
    padding-right: calc(var(--bs-gutter-x) * 0.5);
    padding-left: calc(var(--bs-gutter-x) * 0.5);
}

@media (min-width: 992px) {
    .col-lg-4 {
        width: 33.333333%;
    }
}

.d-flex {
    display: flex !important;
}

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

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

.flex-wrap {
    flex-wrap: wrap !important;
}

.text-end {
    text-align: right !important;
}

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

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

.mb-5 {
    margin-bottom: 3rem !important;
}

.gap-3 {
    gap: 1rem !important;
}

.shadow-sm {
    box-shadow: 0 0.5rem 1rem rgba(0, 0, 0, 0.05);
}

.rounded {
    border-radius: 0.35rem;
}

.navbar {
    position: sticky;
    top: 0;
    z-index: 10;
    display: flex;
    align-items: center;
    min-height: 60px;
    border-bottom: 1px solid var(--bs-border-color);
    backdrop-filter: blur(8px);
}

.navbar .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.navbar-light {
    background-color: rgba(255, 255, 255, 0.85);
}

.navbar-nav {
    display: flex;
    align-items: center;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 0.5rem;
}

.nav-link {
    display: inline-block;
    padding: 0.5rem 0.75rem;
    color: #6c757d;
    border-radius: 0.5rem;
    text-decoration: none;
    transition: color 150ms ease, background 150ms ease;
}

.nav-link:hover,
.nav-link:focus-visible {
    color: #0d6efd;
    background: rgba(13, 110, 253, 0.08);
}

.navbar-toggler {
    display: none;
    padding: 0.4rem 0.6rem;
    background: none;
    border: 1px solid var(--bs-border-color);
    border-radius: 0.35rem;
    font-size: 1.25rem;
    cursor: pointer;
}

@media (max-width: 768px) {
    .navbar-toggler {
        display: inline-block;
    }
    .navbar-nav {
        position: absolute;
        inset: 64px 1rem auto 1rem;
        flex-direction: column;
        padding: 1rem;
        background: #fff;
        border: 1px solid var(--bs-border-color);
        border-radius: 0.75rem;
        box-shadow: 0 1rem 2rem rgba(0, 0, 0, 0.15);
        display: none;
        max-height: 70vh;
        overflow-y: auto;
    }
    .navbar-nav.show {
        display: flex;
    }

    .navbar-nav li {
        width: 100%;
    }

    .navbar-nav .nav-link,
    .navbar-nav .btn {
        width: 100%;
        text-align: left;
        padding: 0.75rem 1rem;
        border-radius: 0.5rem;
        margin-bottom: 0.25rem;
    }

    .container {
        padding-left: 1rem;
        padding-right: 1rem;
    }

    .row {
        margin-left: 0;
        margin-right: 0;
    }

    .col,
    .col-12,
    .col-md-6,
    .col-lg-4 {
        padding-left: 0;
        padding-right: 0;
    }
}