/* TopNav — organism. Spec: component-specs/top-nav.md */

.top-nav {
    position: sticky;
    top: 0;
    z-index: var(--z-header);
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 16px;
    height: 64px;
    /* Left padding centers the logomark on the sidebar icon axis (28px rail
     * pad, 15px icons → axis x=35.5; the 21px mark starts at ≈24.5px).
     * Keep in lockstep with the sidebar. */
    padding-inline: 24.5px 20px;
    background: var(--surface-canvas);
    border-bottom: var(--border-hairline) solid var(--border-default);
}

.top-nav-left {
    justify-self: start;
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.top-nav-logo-link {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    color: var(--text-primary);
    text-decoration: none;
}

.top-nav-divider {
    flex-shrink: 0;
    width: var(--border-hairline);
    height: 20px;
    background: var(--border-interactive);
}

.top-nav-doc-label {
    font-size: 18px;
    font-weight: var(--font-weight-medium);
    letter-spacing: -0.03em;
    color: var(--text-primary);
    white-space: nowrap;
}

.top-nav-search {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    height: 32px;
    padding-inline: 12px;
    border: var(--border-hairline) solid var(--border-default);
    border-radius: var(--radius-full);
    background: transparent;
    color: var(--text-tertiary);
    font-size: var(--text-mini-size);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition:
        border-color 0.1s cubic-bezier(0.25, 0.46, 0.45, 0.94),
        color 0.1s cubic-bezier(0.25, 0.46, 0.45, 0.94);
}

@media (any-hover: hover) {
    .top-nav-search:hover {
        color: var(--text-primary);
        border-color: var(--border-interactive);
    }
}

.top-nav-search [stroke-width] {
    stroke-width: 2.25;
}

.top-nav-right {
    justify-self: end;
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.top-nav-secondary-controls {
    display: inline-flex;
    align-items: center;
    gap: 12px;
}

.top-nav-ecosystem-link,
.top-nav-ghost-link {
    white-space: nowrap;
}

.top-nav-icon-button {
    width: 32px;
    padding-inline: 0;
}

.top-nav-hamburger {
    display: none;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    margin-right: -8px;
    border: none;
    background: none;
    color: var(--text-primary);
    cursor: pointer;
}

@media (width <= 999px) {
    .top-nav-secondary-controls {
        display: none;
    }

    .top-nav-hamburger {
        display: inline-flex;
    }

    .top-nav-search,
    .top-nav-search-divider {
        display: none;
    }
}