nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    height: var(--nav-h);
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0 clamp(1.15rem, 4vw, 3rem);
    background: rgba(9, 14, 16, 0.76);
    border-bottom: 1px solid transparent;
    backdrop-filter: blur(18px);
    transition:
        background var(--transition),
        border-color var(--transition),
        box-shadow var(--transition);
}

[data-theme="light"] nav {
    background: rgba(247, 248, 242, 0.76);
}

nav.is-scrolled {
    border-bottom-color: var(--border);
    box-shadow: 0 8px 28px rgba(0, 0, 0, 0.12);
}

.nav-logo {
    display: inline-flex;
    align-items: center;
    gap: 0.8rem;
    text-decoration: none;
    color: var(--text);
}

.logo-icon {
    width: 2.65rem;
    height: 2.65rem;
    border-radius: 14px;
    background: linear-gradient(145deg, rgba(31, 179, 90, 0.16), rgba(31, 179, 90, 0.04));
    border: 1px solid var(--accent-strong);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0.35rem;
}

.logo-icon img {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.logo-wordmark span {
    font-family: "Bebas Neue", sans-serif;
    font-size: 1.15rem;
    letter-spacing: 0.07em;
    color: var(--text);
    line-height: 1;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 0.2rem;
    list-style: none;
}

.nav-links a,
.nav-disabled {
    display: inline-flex;
    align-items: center;
    min-height: 40px;
    padding: 0.45rem 0.8rem;
    border-radius: 999px;
    color: var(--muted);
    text-decoration: none;
    transition:
        color var(--transition),
        background var(--transition);
    font-size: 0.9rem;
}

.nav-links a:hover,
.dropdown-menu a:hover {
    color: var(--text);
    background: var(--accent-soft);
}

.nav-links li {
    display: flex;
    align-items: center;
}

.dropdown {
    position: relative;
}

.dropdown > a::after {
    content: "▾";
    margin-left: 0.35rem;
    font-size: 0.7rem;
}

.dropdown-menu {
    position: absolute;
    top: 100%;
    left: 50%;
    min-width: 250px;
    transform: translateX(-50%);
    padding: 0.5rem;
    padding-top: 1rem;
    background: var(--surface-raised);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    box-shadow: var(--shadow);
    opacity: 0;
    pointer-events: none;
    transition:
        opacity var(--transition),
        transform var(--transition);
}

.dropdown:hover .dropdown-menu,
.dropdown:focus-within .dropdown-menu {
    opacity: 1;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
}

.dropdown-menu a {
    display: block;
    border-radius: 10px;
    padding: 0.65rem 0.8rem;
    color: var(--muted);
}

.nav-right {
    display: flex;
    align-items: center;
    gap: 0.65rem;
}

.social-icons {
    display: flex;
    align-items: center;
    gap: 0.35rem;
}

.social-icons a,
.theme-toggle,
.hamburger {
    width: 40px;
    height: 40px;
    border-radius: 999px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    background: var(--surface-soft);
    color: var(--muted);
    transition:
        color var(--transition),
        border-color var(--transition),
        background var(--transition);
}

.social-icons a:hover,
.theme-toggle:hover,
.hamburger:hover {
    color: var(--text);
    border-color: var(--border-strong);
    background: var(--surface-raised);
}

.social-icons svg,
.theme-toggle svg,
.hamburger svg {
    width: 1rem;
    height: 1rem;
    fill: none;
    stroke: currentColor;
    stroke-width: 2;
}

.social-icons a svg {
    fill: currentColor;
    stroke: none;
}

/* Theme toggle: show only the relevant icon */
.theme-toggle .icon-moon,
.theme-toggle .icon-sun {
    display: none;
}

[data-theme="dark"] .theme-toggle .icon-moon {
    display: block;
}

[data-theme="light"] .theme-toggle .icon-sun {
    display: block;
}

.nav-disabled,
.menu-disabled,
.dropdown-disabled,
.footer-disabled {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    cursor: not-allowed;
    color: rgba(163, 176, 167, 0.52);
    border: 1px dashed rgba(163, 176, 167, 0.22);
    background: rgba(163, 176, 167, 0.04);
}

.nav-disabled.store-option-1,
.nav-disabled.store-option-2,
.menu-disabled.store-option-1,
.menu-disabled.store-option-2,
.footer-disabled.store-option-1,
.footer-disabled.store-option-2 {
    border-color: transparent;
    background: transparent;
}

.nav-disabled.store-option-2::after,
.menu-disabled.store-option-2::after,
.footer-disabled.store-option-2::after {
    display: none;
}

.dropdown-disabled {
    display: flex;
    justify-content: space-between;
    padding: 0.65rem 0.8rem;
    border-radius: 10px;
    font-size: 0.9rem;
    white-space: nowrap;
    border-color: transparent;
    background: transparent;
}

.disabled-label {
    color: inherit;
}

.disabled-state {
    display: inline-flex;
    align-items: center;
    min-height: 1.35rem;
    padding: 0.15rem 0.42rem;
    border-radius: 999px;
    background: rgba(163, 176, 167, 0.12);
    border: 1px solid rgba(163, 176, 167, 0.18);
    color: rgba(163, 176, 167, 0.8);
    font-size: 0.7rem;
    font-weight: 700;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.nav-disabled::after,
.menu-disabled::after,
.dropdown-disabled::after,
.footer-disabled::after {
    content: attr(data-tooltip);
    position: absolute;
    left: 50%;
    bottom: calc(100% + 0.45rem);
    transform: translateX(-50%);
    white-space: nowrap;
    padding: 0.45rem 0.65rem;
    border-radius: 999px;
    background: var(--surface-raised);
    border: 1px solid var(--border-strong);
    color: var(--text);
    font-size: 0.76rem;
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--transition);
    z-index: 10;
}

.nav-disabled::after {
    top: calc(100% + 0.45rem);
    bottom: auto;
}

.nav-disabled:hover::after,
.nav-disabled:focus-visible::after,
.menu-disabled:hover::after,
.menu-disabled:focus-visible::after,
.dropdown-disabled:hover::after,
.dropdown-disabled:focus-visible::after,
.footer-disabled:hover::after,
.footer-disabled:focus-visible::after {
    opacity: 1;
}

.hamburger {
    display: none;
    cursor: pointer;
}

.mobile-menu {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    z-index: 999;
    padding: 0.85rem 1rem 1.2rem;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    display: grid;
    gap: 0.4rem;
    transform: translateY(-120%);
    transition: transform var(--transition);
}

.mobile-menu[hidden] {
    display: none;
}

.mobile-menu.open {
    transform: translateY(0);
}

.mobile-menu a,
.menu-disabled {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 44px;
    padding: 0.75rem 0.9rem;
    border-radius: var(--radius-xs);
    text-decoration: none;
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border);
}

.nav-disabled:hover,
.nav-disabled:focus-visible,
.menu-disabled:hover,
.menu-disabled:focus-visible,
.footer-disabled:hover,
.footer-disabled:focus-visible {
    color: rgba(237, 242, 238, 0.82);
    background: rgba(163, 176, 167, 0.08);
    border-color: rgba(163, 176, 167, 0.34);
}

.nav-disabled.store-option-1:hover,
.nav-disabled.store-option-1:focus-visible,
.nav-disabled.store-option-2:hover,
.nav-disabled.store-option-2:focus-visible,
.menu-disabled.store-option-1:hover,
.menu-disabled.store-option-1:focus-visible,
.menu-disabled.store-option-2:hover,
.menu-disabled.store-option-2:focus-visible,
.footer-disabled.store-option-1:hover,
.footer-disabled.store-option-1:focus-visible,
.footer-disabled.store-option-2:hover,
.footer-disabled.store-option-2:focus-visible {
    background: transparent;
    border-color: transparent;
}

.menu-disabled::after {
    bottom: auto;
    top: calc(100% + 0.35rem);
}

@media (max-width: 1020px) {
    .nav-links,
    .social-icons {
        display: none;
    }

    .hamburger {
        display: inline-flex;
    }

    .logo-wordmark span {
        display: none;
    }
}