/* ─────────────────────────────────────────────
   FLOATING GLASS NAV
   ───────────────────────────────────────────── */

.nav {
    position: fixed;
    top: 18px;
    left: 50%;
    width: calc(100% - 32px);
    max-width: var(--max);

    z-index: 1000;

    padding: 14px 24px;

    background: rgba(250, 250, 250, 0.62);

    backdrop-filter: blur(22px) saturate(140%);
    -webkit-backdrop-filter: blur(22px) saturate(140%);

    border: 1px solid rgba(255,255,255,0.5);

    box-shadow:
        0 1px 0 rgba(255,255,255,0.6) inset,
        0 22px 50px -25px rgba(0,0,0,0.25),
        0 6px 18px -10px rgba(0,0,0,0.15);

    border-radius: 999px;

    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 24px;

    transition:
        padding var(--t-base) var(--ease),
        top var(--t-base) var(--ease),
        background var(--t-base) var(--ease),
        transform var(--t-base) var(--ease),
        max-width var(--t-base) var(--ease);

    opacity: 0;
    transform: translate(-50%, -120%);

    animation: navIn 1.1s var(--ease) 0.2s forwards;
}

@keyframes navIn {
    to {
        opacity: 1;
        transform: translate(-50%, 0);
    }
}

.nav.shrink {
    padding: 8px 22px;
    background: rgba(250, 250, 250, 0.82);
    top: 12px;
    max-width: 1180px;
}


/* ─────────────────────────────────────────────
   BRAND
   ───────────────────────────────────────────── */

.nav-brand {
    display: flex;
    align-items: center;
    gap: 12px;
    flex-shrink: 0;
}

.nav-brand svg {
    width: 30px;
    height: 30px;
    transition: transform var(--t-base) var(--ease);
}

.nav.shrink .nav-brand svg {
    transform: rotate(-12deg) scale(0.9);
}

.nav-brand-text {
    font-family: var(--font-display);
    font-size: 17px;
    font-weight: 600;
    letter-spacing: 0.01em;
    line-height: 1;
    color: var(--ink);
}

.nav-brand-text em {
    display: block;

    font-family: var(--font-mono);
    font-style: normal;

    font-size: 8px;

    letter-spacing: 0.32em;
    text-transform: uppercase;

    color: var(--ink-mute);

    margin-top: 4px;
}


/* ─────────────────────────────────────────────
   MENU DESKTOP
   ───────────────────────────────────────────── */

.nav-links {
    display: flex;
    justify-content: center;
    gap: 4px;
    flex-wrap: wrap;
}

.nav-link {
    position: relative;

    font-family: var(--font-mono);
    font-size: 11px;
    font-weight: 500;

    letter-spacing: 0.16em;
    text-transform: uppercase;

    color: var(--ink-soft);

    padding: 10px 14px;

    border-radius: 999px;

    transition: color var(--t-fast) var(--ease);
}

.nav-link::before {
    content: '';

    position: absolute;

    left: 50%;
    bottom: 6px;

    width: 0;
    height: 1px;

    background: var(--terracotta);

    transform: translateX(-50%);

    transition: width 600ms var(--ease);
}

.nav-link:hover {
    color: var(--terracotta);
}

.nav-link:hover::before {
    width: calc(100% - 28px);
}


/* ─────────────────────────────────────────────
   CTA
   ───────────────────────────────────────────── */

.nav-cta {
    font-family: var(--font-mono);
    font-size: 10px;
    font-weight: 600;

    letter-spacing: 0.22em;
    text-transform: uppercase;

    color: var(--bg-gallery);

    background: var(--ink);

    padding: 12px 20px;

    border-radius: 999px;
    border: none;

    transition:
        background var(--t-fast) var(--ease),
        transform var(--t-fast) var(--ease),
        letter-spacing 600ms var(--ease);
}

.nav-cta:hover {
    background: var(--terracotta);
    transform: translateY(-1px);
    letter-spacing: 0.28em;
}

.mobile-cta {
    display: none;
}

.desktop-cta {
    display: inline-flex;
}


/* ─────────────────────────────────────────────
   HAMBURGER
   ───────────────────────────────────────────── */

.nav-toggle {
    display: none;

    width: 48px;
    height: 48px;

    border: none;
    background: transparent;

    cursor: pointer;

    padding: 0;

    position: relative;
    z-index: 1101;
}

.nav-toggle span {
    display: block;

    width: 24px;
    height: 2px;

    margin: 5px auto;

    background: var(--ink);

    border-radius: 999px;

    transition: all .3s ease;
}


/* ─────────────────────────────────────────────
   ANIMAZIONE HAMBURGER
   ───────────────────────────────────────────── */

.nav.menu-open .nav-toggle span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
}

.nav.menu-open .nav-toggle span:nth-child(2) {
    opacity: 0;
}

.nav.menu-open .nav-toggle span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
}


/* ─────────────────────────────────────────────
   TABLET E MOBILE
   ───────────────────────────────────────────── */

@media (max-width: 1100px) {

    .nav {
        grid-template-columns: 1fr auto;
        align-items: center;

        padding: 12px 18px;

        border-radius: 24px;
    }

    .nav.shrink {
        padding: 10px 18px;
    }

    .desktop-cta {
        display: none;
    }

    .nav-toggle {
        display: block;
        justify-self: end;
    }

    .nav-links {

        position: fixed;
        inset: 0;

        display: flex;
        flex-direction: column;
        justify-content: center;
        align-items: center;

        gap: 28px;

        background: rgba(250,250,250,.97);

        backdrop-filter: blur(24px);
        -webkit-backdrop-filter: blur(24px);

        transform: translateX(100%);

        transition: transform .35s ease;

        z-index: 1090;
    }

    .nav.menu-open .nav-links {
        transform: translateX(0);
    }

    .nav-link {
        font-size: 15px;
        letter-spacing: .22em;

        padding: 14px 18px;
    }

    .nav-link::before {
        bottom: 4px;
    }

    .mobile-cta {
        display: inline-flex;
        margin-top: 12px;
    }

    body.menu-open {
        overflow: hidden;
    }
}


/* ─────────────────────────────────────────────
   SMARTPHONE
   ───────────────────────────────────────────── */

@media (max-width: 520px) {

    .nav {
        width: calc(100% - 20px);

        top: 12px;

        padding: 10px 14px;
    }

    .nav-brand img {
        width: 34px;
        height: 34px;
    }

    .nav-brand-text {
        font-size: 14px;
    }

    .nav-brand-text em {
        font-size: 7px;
        letter-spacing: .24em;
    }

    .nav-link {
        font-size: 13px;
    }

    .nav-toggle {
        width: 42px;
        height: 42px;
    }
}

/* MOBILE MENU */

.nav-mobile-btn {
    display: none;

    background: transparent;
    border: none;

    font-size: 28px;
    color: var(--ink);

    cursor: pointer;
}

.mobile-only {
    display: none;
}

@media (max-width: 900px) {

    .nav {
        grid-template-columns: 1fr auto;
        border-radius: 24px;
    }

    .nav-mobile-btn {
        display: block;
    }

    .desktop-cta {
        display: none;
    }

    .nav-links {

        display: none;

        position: absolute;

        top: calc(100% + 10px);
        left: 0;
        right: 0;

        background: rgba(250,250,250,.96);

        backdrop-filter: blur(20px);

        border-radius: 24px;

        padding: 20px;

        flex-direction: column;
        gap: 8px;

        box-shadow:
            0 20px 40px rgba(0,0,0,.15);
    }

    .nav.open .nav-links {
        display: flex;
    }

    .nav-link {
        width: 100%;

        text-align: center;

        padding: 14px;

        border-radius: 14px;
    }

    .nav-link:hover {
        background: rgba(0,0,0,.05);
    }

    .mobile-only {
        display: inline-flex;
        justify-content: center;
        margin-top: 12px;
    }
}