.lang-toggle {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    height: 32px;
    min-width: 38px;
    padding: 0 10px;
    border-radius: 100px;
    background: #18181b;
    border: 1px solid #3f3f46;
    color: #e5e5e7;
    font-family: 'IBM Plex Mono', ui-monospace, monospace;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.08em;
    cursor: pointer;
    transition: background 0.25s ease, border-color 0.25s ease, color 0.25s ease, transform 0.15s ease;
    flex-shrink: 0;
    outline: none;
    user-select: none;
}

.lang-toggle:hover {
    background: #27272a;
    border-color: #52525b;
}

.lang-toggle:active {
    transform: scale(0.96);
}

.lang-toggle:focus-visible {
    box-shadow: 0 0 0 2px rgba(196, 30, 58, 0.5);
}

.lang-toggle-label {
    line-height: 1;
}

/* ---- Light theme ---- */
[data-theme="light"] .lang-toggle {
    background: #f4f4f5;
    border-color: #d4d4d8;
    color: #18181b;
}

[data-theme="light"] .lang-toggle:hover {
    background: #e4e4e7;
    border-color: #a1a1aa;
}

/* ---- Mobile: tighten spacing ---- */
@media (max-width: 640px) {
    .lang-toggle {
        height: 30px;
        min-width: 34px;
        padding: 0 8px;
        font-size: 10px;
    }
}