/* ─── Burger Button ─────────────────────────────────────────────────── */
.nav {
    position: fixed;
    top: 0;
    right: 0;
    z-index: 90;
}

.nav__burger {
    position: fixed;
    top: 1.6rem;
    right: 1.8rem;
    z-index: 91;
    width: 36px;
    height: 36px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: none;
    border: none;
    cursor: pointer;
    padding: 0;
    opacity: 0.45;
    transition: opacity 0.2s ease;
}

.nav__burger:hover {
    opacity: 1;
}

.nav__line {
    display: block;
    width: 20px;
    height: 1px;
    background: #ffffff;
    border-radius: 2px;
    transform-origin: center;
    transition: transform 0.38s cubic-bezier(0.16, 1, 0.3, 1),
                opacity 0.2s ease;
}

/* Open state — 2 lines become X */
.nav--open .nav__burger {
    opacity: 1;
}

.nav--open .nav__line:nth-child(1) {
    transform: translateY(3.5px) rotate(45deg);
}

.nav--open .nav__line:nth-child(2) {
    transform: translateY(-3.5px) rotate(-45deg);
}

/* ─── Overlay ───────────────────────────────────────────────────────── */
.nav__overlay {
    position: fixed;
    inset: 0;
    z-index: 89;
    background: #000;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1),
                visibility 0s linear 0.4s;
}

.nav--open .nav__overlay {
    opacity: 1;
    visibility: visible;
    transition: opacity 0.4s cubic-bezier(0.16, 1, 0.3, 1),
                visibility 0s linear 0s;
}

/* ─── Nav Items ─────────────────────────────────────────────────────── */
.nav__item {
    font-size: clamp(1.4rem, 5vw, 2.2rem);
    font-weight: 700;
    letter-spacing: 0.12em;
    color: #555555;
    text-decoration: none;
    text-transform: uppercase;
    transition: color 0.2s ease;
    transform: translateY(12px);
    opacity: 0;
    transition: color 0.2s ease,
                transform 0.45s cubic-bezier(0.16, 1, 0.3, 1),
                opacity 0.45s cubic-bezier(0.16, 1, 0.3, 1);
}

.nav--open .nav__item {
    transform: translateY(0);
    opacity: 1;
    transition-delay: 0.1s;
}

.nav__item:hover {
    color: #ffffff;
}

/* ─── Overlay footer ────────────────────────────────────────────────── */
.nav__overlay-footer {
    position: absolute;
    bottom: 2rem;
    font-size: 0.6rem;
    font-weight: 500;
    letter-spacing: 0.2em;
    color: #2a2a2a;
    text-transform: uppercase;
}