.desktop-nav {
    position: sticky;
    top: 0;
    z-index: var(--ui-z-nav);
    min-height: 70px;
    border-bottom: 1px solid var(--ui-line);
    background: var(--ui-nav-surface);
    box-shadow: 0 2px 10px rgba(15, 23, 42, .04);
}

.desktop-nav:empty {
    visibility: hidden;
}

.desktop-nav__inner {
    width: min(var(--ui-page-max), calc(100% - 32px));
    min-height: 70px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: minmax(176px, auto) minmax(500px, 1fr) minmax(220px, 268px);
    align-items: center;
    gap: 18px;
}

.desktop-nav__brand {
    min-width: 0;
    display: flex;
    align-items: center;
    gap: 10px;
}

.desktop-nav__logo {
    width: 42px;
    height: 42px;
    flex: 0 0 42px;
    display: grid;
    place-items: center;
    overflow: hidden;
    border-radius: var(--ui-radius-md);
    background: var(--ui-primary);
    color: var(--ui-on-primary);
    font-size: 20px;
    font-weight: 900;
}

.desktop-nav__logo img {
    width: 100%;
    height: 100%;
    object-fit: contain;
    background: #ffffff;
}

.desktop-nav__brand-copy {
    min-width: 0;
    display: grid;
    gap: 2px;
}

.desktop-nav__brand-copy strong,
.desktop-nav__brand-copy small {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.desktop-nav__brand-copy strong {
    color: var(--ui-heading);
    font-size: 16px;
}

.desktop-nav__brand-copy small {
    color: var(--ui-muted);
    font-size: 11px;
}

.desktop-nav__links {
    min-width: 0;
    display: flex;
    align-items: stretch;
    justify-content: center;
    gap: 2px;
}

.desktop-nav__link {
    position: relative;
    min-width: 72px;
    height: 70px;
    padding: 0 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
    color: var(--ui-muted);
    font-size: 14px;
    font-weight: 750;
}

.desktop-nav__link::after {
    content: "";
    position: absolute;
    right: 16px;
    bottom: 0;
    left: 16px;
    height: 3px;
    border-radius: 3px 3px 0 0;
    background: var(--ui-primary);
    transform: scaleX(0);
    transition: transform var(--ui-duration-fast) ease-out;
}

.desktop-nav__link:hover,
.desktop-nav__link.active {
    background: var(--ui-primary-soft);
    color: var(--ui-primary);
}

.desktop-nav__link.active::after {
    transform: scaleX(1);
}

.desktop-nav__search {
    height: 40px;
    display: grid;
    grid-template-columns: 18px minmax(0, 1fr) auto;
    align-items: center;
    gap: 8px;
    padding-left: 12px;
    border: 1px solid var(--ui-line-strong);
    border-radius: var(--ui-radius-md);
    background: var(--ui-surface-muted);
    transition: border-color var(--ui-duration-fast) ease-out, box-shadow var(--ui-duration-fast) ease-out;
}

.desktop-nav__search:focus-within {
    border-color: var(--ui-primary);
    box-shadow: var(--ui-focus);
}

.desktop-nav__search .ui-icon {
    color: var(--ui-subtle);
}

.desktop-nav__search input {
    min-width: 0;
    height: 38px;
    padding: 0;
    border: 0;
    outline: 0;
    background: transparent;
    color: var(--ui-ink);
}

.desktop-nav__search input::placeholder {
    color: var(--ui-subtle);
}

.desktop-nav__search button {
    align-self: stretch;
    min-width: 58px;
    border: 0;
    border-radius: 0 calc(var(--ui-radius-md) - 1px) calc(var(--ui-radius-md) - 1px) 0;
    background: var(--ui-primary);
    color: var(--ui-on-primary);
    font-weight: 800;
}

.bottom-nav {
    position: fixed;
    z-index: var(--ui-z-mobile-bar);
    right: 0;
    bottom: 0;
    left: 0;
    min-height: calc(62px + env(safe-area-inset-bottom));
    display: none;
    grid-template-columns: repeat(5, minmax(0, 1fr));
    padding-bottom: env(safe-area-inset-bottom);
    border-top: 1px solid var(--ui-line);
    background: var(--ui-mobile-bar-surface);
    box-shadow: 0 -3px 12px rgba(31, 39, 55, .08);
}

.bottom-nav .nav-btn {
    min-width: 0;
    height: 61px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 3px;
    color: var(--ui-muted);
    font-size: 10px;
    font-weight: 700;
}

.bottom-nav .nav-btn .ui-icon {
    width: 20px;
    height: 20px;
}

.bottom-nav .nav-btn.active,
.bottom-nav .nav-buy,
.bottom-nav .nav-buy.active {
    background: transparent;
    color: var(--ui-primary);
}