/* =============================================
   NAV
   ============================================= */

.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 200;
    background: rgba(11, 21, 38, 0.75);
    backdrop-filter: blur(20px) saturate(1.5);
    -webkit-backdrop-filter: blur(20px) saturate(1.5);
    border-bottom: 1px solid rgba(255,255,255,0.05);
    transition:
        background var(--transition-slow),
        border-color var(--transition-slow),
        box-shadow var(--transition-slow);
}

/* Switches to white once user scrolls past the hero */
.nav--light {
    background: rgba(255,255,255,0.95);
    border-bottom-color: var(--color-border);
    box-shadow: var(--shadow-sm);
}

.nav__inner {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    height: 72px;
}

/* ── Logo ─────────────────────────────────── */

.nav__logo {
    flex-shrink: 0;
    display: flex;
    align-items: flex-end;
    gap: 3px;
    line-height: 1;
}

.nav__logo-img {
    height: 36px;
    width: auto;
    display: block;
}

/* ── Desktop links ────────────────────────── */

.nav__links { flex: 1; height: 100%; }

.nav__list {
    display: flex;
    justify-content: flex-end;
    align-items: center;
    height: 100%;
}

.nav__link {
    font-size: 0.875rem;
    font-weight: 600;
    color: rgba(255,255,255,0.6);
    padding-block: var(--space-2);
    padding-inline: var(--space-4);
    position: relative;
    transition: color var(--transition);
}

.nav__link::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 1.5px;
    background: var(--color-accent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform var(--transition);
}

.nav__link:hover {
    color: var(--color-white);
}

.nav__link:hover::after {
    transform: scaleX(1);
}

.nav--light .nav__link {
    color: var(--color-muted);
}

.nav--light .nav__link:hover {
    color: var(--color-ink);
}

/* ── Cart icon ────────────────────────────── */

.nav__cart-btn {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 38px;
    height: 38px;
    margin-right: var(--space-2);
    border-radius: var(--radius-md);
    color: rgba(255,255,255,0.6);
    text-decoration: none;
    transition: background var(--transition), color var(--transition);
}
.nav__cart-btn:hover {
    background: rgba(255,255,255,0.1);
    color: var(--color-white);
}
.nav--light .nav__cart-btn { color: var(--color-muted); }
.nav--light .nav__cart-btn:hover { background: var(--color-surface); color: var(--color-ink); }

.nav__cart-badge {
    position: absolute;
    top: 2px;
    right: 2px;
    min-width: 17px;
    height: 17px;
    padding: 0 4px;
    background: var(--color-accent);
    color: #fff;
    font-size: 0.65rem;
    font-weight: 700;
    border-radius: 999px;
    display: flex;
    align-items: center;
    justify-content: center;
    line-height: 1;
    pointer-events: none;
}
.nav__cart-badge--inline {
    position: static;
    display: inline-flex;
    vertical-align: middle;
    margin-left: 4px;
}

/* ── CTA / login button ───────────────────── */

.nav__cta {
    flex-shrink: 0;
    font-size: 0.82rem;
    padding: 0.55rem 1.25rem;
}

.nav__cta--login {
    background: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
    display: flex;
    align-items: center;
    gap: 10px;
}

.nav__cta--login:hover {
    background: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    color: var(--color-white);
}

.nav--light .nav__cta--login {
    background: var(--color-accent);
    color: var(--color-white);
    border-color: var(--color-accent);
}

.nav--light .nav__cta--login:hover {
    background: var(--color-accent-dark);
    border-color: var(--color-accent-dark);
    box-shadow: 0 0 0 3px var(--color-accent-glow);
}

/* ── Login dropdown ───────────────────────── */

.nav__login {
    position: relative;
    flex-shrink: 0;
}

.nav__login::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: 8px;
}

.nav__login-dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 220px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--space-2) 0;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-6px);
    transition: opacity 0.15s ease, transform 0.15s ease;
    z-index: 300;
}

.nav__login:hover .nav__login-dropdown,
.nav__login-dropdown.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.nav__login-option {
    display: flex;
    flex-direction: column;
    gap: 2px;
    padding: var(--space-3) var(--space-4);
    text-decoration: none;
    transition: background var(--transition);
}

.nav__login-option:hover {
    background: var(--color-surface);
}

.nav__login-option-name {
    font-size: 0.88rem;
    font-weight: 600;
    color: var(--color-ink);
    transition: color var(--transition);
}

.nav__login-option:hover .nav__login-option-name {
    color: var(--color-accent);
}

.nav__login-option-desc {
    font-size: 0.75rem;
    line-height: 0.55rem;
    color: var(--color-muted);
}

/* ── User avatar dropdown ─────────────────── */

.nav__user {
    position: relative;
    flex-shrink: 0;
}

.nav__user-btn {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-md);
    transition: background var(--transition);
    color: rgba(255,255,255,0.85);
}

.nav__user-btn:hover {
    background: rgba(255,255,255,0.08);
}

.nav--light .nav__user-btn {
    color: var(--color-ink);
}

.nav--light .nav__user-btn:hover {
    background: var(--color-surface);
}

.nav__user-avatar {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: var(--color-accent);
    color: var(--color-white);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.8rem;
    font-weight: 700;
    flex-shrink: 0;
    font-family: var(--font-sans);
}

.nav__user-name {
    font-size: 0.85rem;
    font-weight: 600;
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.nav__dropdown {
    position: absolute;
    top: calc(100% + 8px);
    right: 0;
    min-width: 200px;
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--space-2) 0;
    opacity: 0;
    pointer-events: none;
    transform: translateY(-6px);
    transition: opacity 0.15s ease, transform 0.15s ease;
    z-index: 300;
}

.nav__dropdown.is-open {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.nav__dropdown-name {
    font-size: 0.78rem;
    font-weight: 600;
    color: var(--color-muted);
    padding: var(--space-2) var(--space-4) var(--space-3);
    text-transform: uppercase;
    letter-spacing: 0.06em;
}

.nav__dropdown-link {
    display: block;
    width: 100%;
    padding: var(--space-2) var(--space-4);
    font-size: 0.88rem;
    font-weight: 500;
    color: var(--color-text);
    background: none;
    border: none;
    text-align: left;
    cursor: pointer;
    font-family: var(--font-sans);
    transition: background var(--transition), color var(--transition);
    text-decoration: none;
}

.nav__dropdown-link:hover {
    background: var(--color-surface);
    color: var(--color-accent);
}

.nav__dropdown-divider {
    height: 1px;
    background: var(--color-border);
    margin: var(--space-2) 0;
}

.nav__dropdown-link--logout {
    color: var(--color-error);
}

.nav__dropdown-link--logout:hover {
    background: var(--color-error-bg);
    color: var(--color-error);
}

.nav__mobile-user {
    padding: var(--space-4) 0;
    border-bottom: 1px solid rgba(255,255,255,0.06);
}

.nav__mobile-user-name {
    display: block;
    font-size: 0.75rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: rgba(255,255,255,0.4);
    padding-bottom: var(--space-2);
}

.nav__mobile-divider {
    border-top: 1px solid rgba(255,255,255,0.08);
    margin: var(--space-2) 0;
}

.nav__mobile-link--sub {
    font-size: 0.9rem;
    font-weight: 500;
    padding: var(--space-2) 0;
    color: rgba(255,255,255,0.5);
    border-bottom: none;
}

.nav__mobile-link--logout {
    display: block;
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    border-top: 1px solid rgba(255,255,255,0.06);
    margin-top: var(--space-3);
    padding: var(--space-3) 0 0;
    font-size: 0.9rem;
    font-weight: 600;
    color: rgba(255,255,255,0.5);
    cursor: pointer;
    transition: color var(--transition);
}

.nav__mobile-link--logout:hover {
    color: var(--color-white);
}

/* ── Burger ───────────────────────────────── */

.nav__burger {
    display: none;
    flex-direction: column;
    justify-content: center;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-2);
    margin-left: auto;
    width: 36px;
    height: 36px;
}

.nav__burger span {
    display: block;
    width: 22px;
    height: 1.5px;
    background: var(--color-white);
    border-radius: 2px;
    transition: transform var(--transition), opacity var(--transition);
}

.nav--light .nav__burger span {
    background: var(--color-ink);
}

.nav__burger.is-open span:nth-child(1) { transform: translateY(6.5px) rotate(45deg); }
.nav__burger.is-open span:nth-child(2) { opacity: 0; }
.nav__burger.is-open span:nth-child(3) { transform: translateY(-6.5px) rotate(-45deg); }

/* ── Mobile drawer ────────────────────────── */

.nav__mobile {
    background: var(--color-navy);
    border-top: 1px solid rgba(255,255,255,0.06);
    max-height: calc(100dvh - 72px);
    overflow-y: auto;
    overscroll-behavior: contain;
}

.nav__mobile-list {
    display: flex;
    flex-direction: column;
    padding: var(--space-4) var(--container-pad) var(--space-6);
}

.nav__mobile-link {
    display: block;
    padding: var(--space-4) 0;
    font-size: 1rem;
    font-weight: 600;
    color: rgba(255,255,255,0.65);
    border-bottom: 1px solid rgba(255,255,255,0.06);
    transition: color var(--transition);
}

.nav__mobile-link:hover {
    color: var(--color-white);
}

/* ── Responsive ───────────────────────────── */

@media (max-width: 768px) {
    .nav__links,
    .nav__cta,
    .nav__user,
    .nav__cart-btn { display: none; }

    .nav__burger { display: flex; }
}

/* ── Mega menu ────────────────────────────── */

.nav__item--has-mega {
    position: static;
    height: 100%;
    display: flex;
    align-items: center;
}

.nav__link--mega-trigger {
    display: flex;
    align-items: center;
    gap: 5px;
}

.nav__chevron {
    transition: transform var(--transition);
    flex-shrink: 0;
}

.nav__item--has-mega.mega-open .nav__chevron,
.nav__item--has-mega:focus-within .nav__chevron {
    transform: rotate(180deg);
}

.nav__mega {
    position: fixed;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--color-white);
    border-top: 1px solid var(--color-border);
    border-bottom: 1px solid var(--color-border);
    box-shadow: var(--shadow-md);
    opacity: 0;
    pointer-events: none;
    transform: translateY(-6px);
    transition: opacity 0.18s ease, transform 0.18s ease;
    z-index: 190;
}

.nav__item--has-mega.mega-open .nav__mega,
.nav__item--has-mega:focus-within .nav__mega {
    opacity: 1;
    pointer-events: auto;
    transform: translateY(0);
}

.nav__mega-inner {
    display: grid;
    grid-template-columns: repeat(var(--cols, 4), 1fr);
    grid-template-rows: auto auto 1fr;
    column-gap: var(--space-8);
    padding-block: var(--space-8);
}

.nav__mega-col {
    grid-row: 1 / span 3;
    display: grid;
    grid-template-rows: subgrid;
}

.nav__mega-list {
    grid-row: 3;
}

.nav__mega-cat {
    display: block;
    font-size: 1rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: var(--space-3);
    padding-bottom: var(--space-2);
    border-bottom: 1px solid var(--color-border);
    transition: color var(--transition);
}

.nav__mega-cat:hover { color: var(--color-accent-dark); }

.nav__mega-col-img {
    display: block;
    margin-bottom: var(--space-3);
    border-radius: var(--radius-md);
    border: 2px solid var(--color-border);
    overflow: hidden;
    line-height: 0;
}

.nav__mega-col-img img {
    width: 100%;
    height: 120px;
    object-fit: contain;
    transition: transform 0.25s ease;
}

.nav__mega-col-img--cover img { object-fit: cover; }

.nav__mega-col-img:hover img {
    transform: scale(1.03);
}

.nav__mega-list { list-style: none; }

.nav__mega-link {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text);
    padding: var(--space-2) 0;
    transition: color var(--transition), padding-left var(--transition);
}

.nav__mega-link:hover {
    color: var(--color-accent);
    padding-left: 4px;
}

/* ── Mobile products ──────────────────────── */

.nav__mobile-details { list-style: none; }
.nav__mobile-details > summary { list-style: none; }
.nav__mobile-details > summary::-webkit-details-marker { display: none; }

.nav__mobile-summary {
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
    user-select: none;
}

.nav__mobile-details[open] .nav__chevron {
    transform: rotate(180deg);
}

.nav__mobile-products {
    padding: var(--space-2) 0 var(--space-4) var(--space-4);
    display: flex;
    flex-direction: column;
}

.nav__mobile-cat {
    font-size: 0.65rem;
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-top: var(--space-4);
    margin-bottom: var(--space-1);
}

.nav__mobile-product {
    display: block;
    font-size: 0.9rem;
    font-weight: 500;
    color: rgba(255,255,255,0.65);
    padding: var(--space-2) 0;
    transition: color var(--transition);
}

.nav__mobile-product:hover { color: var(--color-white); }

.nav__mobile-all {
    display: inline-block;
    margin-top: var(--space-4);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--color-accent);
    transition: color var(--transition);
}

.nav__mobile-all:hover { color: #4d8fff; }