/* ============================================================
   Navigation & Footer
   ============================================================ */

/* ── Navbar ── */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    height: var(--nav-height);
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    z-index: var(--z-sticky);
    transition: border-color var(--duration-fast) var(--ease-out),
                box-shadow var(--duration-fast) var(--ease-out);
}

.nav.scrolled {
    border-bottom-color: var(--color-border);
    box-shadow: var(--shadow-nav);
}

.nav__inner {
    max-width: var(--container-wide);
    margin: 0 auto;
    padding: 0 var(--space-6);
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

/* Logo */
.nav__logo {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    text-decoration: none;
    font-size: var(--text-h4);
    font-weight: var(--weight-bold);
    color: var(--color-charcoal);
}

.nav__logo-dot {
    color: var(--color-primary);
}

/* Links */
.nav__links {
    display: flex;
    align-items: center;
    gap: var(--space-1);
}

.nav__link {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
    font-weight: var(--weight-medium);
    color: var(--color-text);
    border-radius: var(--radius-sm);
    transition: color var(--duration-fast), background var(--duration-fast);
    text-decoration: none;
}

.nav__link:hover {
    color: var(--color-primary);
    background: var(--color-primary-pale);
}

.nav__link.active {
    color: var(--color-primary);
}

/* Dropdown */
.nav__dropdown {
    position: relative;
}

.nav__dropdown-trigger {
    display: flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
}

.nav__dropdown-trigger svg {
    width: 14px;
    height: 14px;
    transition: transform var(--duration-fast);
}

.nav__dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%) translateY(8px);
    background: var(--color-white);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: var(--space-2);
    min-width: 200px;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--duration-fast) var(--ease-out),
                visibility var(--duration-fast) var(--ease-out),
                transform var(--duration-fast) var(--ease-out);
}

.nav__dropdown:hover .nav__dropdown-menu,
.nav__dropdown.open .nav__dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(0);
}

.nav__dropdown:hover .nav__dropdown-trigger svg {
    transform: rotate(180deg);
}

.nav__dropdown-item {
    display: block;
    padding: var(--space-2) var(--space-4);
    font-size: var(--text-sm);
    color: var(--color-text);
    border-radius: var(--radius-sm);
    text-decoration: none;
    transition: background var(--duration-fast);
}

.nav__dropdown-item:hover {
    background: var(--color-primary-pale);
    color: var(--color-primary);
}

/* Mega-menu (wider dropdown with columns) */
.nav__dropdown-menu--mega {
    min-width: 520px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    padding: var(--space-3);
}

.nav__dropdown-group {
    padding: var(--space-2) 0;
}

.nav__dropdown-group:nth-child(odd) {
    border-right: 1px solid var(--color-border-light);
    padding-right: var(--space-3);
}

.nav__dropdown-group:nth-child(even) {
    padding-left: var(--space-3);
}

.nav__dropdown-group-title {
    font-size: 10px;
    font-weight: var(--weight-bold);
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-tertiary);
    padding: var(--space-2) var(--space-4) var(--space-1);
    margin-bottom: var(--space-1);
}

.nav__dropdown-item--with-icon {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.nav__dropdown-item--with-icon i {
    width: 16px;
    text-align: center;
    color: var(--color-text-tertiary);
    font-size: 12px;
}

.nav__dropdown-item--with-icon:hover i {
    color: var(--color-primary);
}

/* Right side */
.nav__actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

/* Mobile hamburger */
.nav__hamburger {
    display: none;
    flex-direction: column;
    gap: 5px;
    padding: var(--space-2);
    cursor: pointer;
    background: none;
    border: none;
}

.nav__hamburger span {
    display: block;
    width: 22px;
    height: 2px;
    background: var(--color-charcoal);
    border-radius: 2px;
    transition: all var(--duration-fast) var(--ease-out);
}

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

.nav__hamburger.open span:nth-child(2) {
    opacity: 0;
}

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

/* Mobile menu */
.nav__mobile-menu {
    display: none;
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-white);
    padding: var(--space-6);
    overflow-y: auto;
    z-index: var(--z-overlay);
}

.nav__mobile-menu.open {
    display: flex;
    flex-direction: column;
    gap: var(--space-2);
}

.nav__mobile-link {
    display: block;
    padding: var(--space-4);
    font-size: var(--text-lg);
    font-weight: var(--weight-medium);
    color: var(--color-text);
    text-decoration: none;
    border-radius: var(--radius-md);
}

.nav__mobile-link:hover {
    background: var(--color-primary-pale);
    color: var(--color-primary);
}

.nav__mobile-actions {
    margin-top: auto;
    padding-top: var(--space-6);
    border-top: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
}

/* ── Footer ── */
.footer {
    background: var(--color-charcoal);
    color: rgba(255, 255, 255, 0.7);
    padding: var(--space-16) 0 var(--space-8);
}

.footer__grid {
    display: grid;
    grid-template-columns: 2fr repeat(5, 1fr);
    gap: var(--space-6);
    margin-bottom: var(--space-12);
}

.footer__brand {
    max-width: 280px;
}

.footer__logo {
    font-size: var(--text-h4);
    font-weight: var(--weight-bold);
    color: var(--color-white);
    margin-bottom: var(--space-4);
}

.footer__logo .nav__logo-dot {
    color: var(--color-primary);
}

.footer__tagline {
    font-size: var(--text-sm);
    line-height: var(--leading-normal);
    margin-bottom: var(--space-6);
}

.footer__social {
    display: flex;
    gap: var(--space-3);
}

.footer__social-link {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-md);
    background: rgba(255, 255, 255, 0.08);
    display: flex;
    align-items: center;
    justify-content: center;
    color: rgba(255, 255, 255, 0.6);
    transition: all var(--duration-fast);
    text-decoration: none;
    font-size: var(--text-sm);
}

.footer__social-link:hover {
    background: var(--color-primary);
    color: var(--color-white);
}

.footer__column-title {
    font-size: var(--text-sm);
    font-weight: var(--weight-semibold);
    color: var(--color-white);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-5);
}

.footer__link {
    display: block;
    padding: var(--space-1) 0;
    font-size: var(--text-sm);
    color: rgba(255, 255, 255, 0.6);
    text-decoration: none;
    transition: color var(--duration-fast);
}

.footer__link:hover {
    color: var(--color-primary-light);
}

.footer__bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--space-6);
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--space-4);
}

.footer__copyright {
    font-size: var(--text-xs);
}

.footer__legal {
    display: flex;
    gap: var(--space-6);
}

.footer__legal a {
    font-size: var(--text-xs);
    color: rgba(255, 255, 255, 0.5);
    text-decoration: none;
}

.footer__legal a:hover {
    color: var(--color-primary-light);
}

/* ── Responsive ── */
@media (max-width: 991px) {
    .nav__links,
    .nav__actions .btn--ghost,
    .nav__actions .nav__link {
        display: none;
    }
    .nav__hamburger {
        display: flex;
    }
    .footer__grid {
        grid-template-columns: 1fr 1fr;
    }
}

@media (max-width: 767px) {
    .footer__grid {
        grid-template-columns: 1fr;
    }
    .footer__bottom {
        flex-direction: column;
        text-align: center;
    }
}