/**
 * Přepínač jazyka — tlačítko = kód (CS/EN…); menu = vlajka + název.
 */
.lang-switcher {
    position: relative;
    display: inline-flex;
    flex-shrink: 0;
    z-index: 40;
    align-items: center;
}

.lang-switcher__btn {
    display: inline-grid;
    place-items: center;
    width: 2.5rem;
    height: 2.5rem;
    padding: 0;
    margin: 0;
    box-sizing: border-box;
    border-radius: 999px;
    border: 1.5px solid rgba(15, 23, 42, 0.12);
    background: #fff;
    color: #0f172a;
    cursor: pointer;
    line-height: 1;
    font: inherit;
    transition: background 0.16s ease, border-color 0.16s ease, transform 0.16s ease;
}

.lang-switcher__btn:hover,
.lang-switcher__btn:focus-visible {
    border-color: var(--color-accent-amber, #f59e0b);
    background: var(--color-accent-amber-soft, rgba(245, 158, 11, 0.18));
    outline: none;
    transform: translateY(-1px);
}

.lang-switcher__flag {
    display: block;
    font-size: 1.15rem;
    line-height: 1;
}

/* Kód v kolečku — opticky vycentrovaný */
.lang-switcher__code--btn {
    display: block;
    font-size: 0.72rem;
    font-weight: 800;
    letter-spacing: 0.04em;
    line-height: 1;
    text-transform: uppercase;
}

.lang-switcher__code:not(.lang-switcher__code--btn),
.lang-switcher__chev {
    display: none;
}

.lang-switcher__menu {
    position: absolute;
    top: calc(100% + 0.4rem);
    right: 0;
    margin: 0;
    padding: 0.35rem;
    list-style: none;
    min-width: 12.5rem;
    border-radius: 0.9rem;
    border: 1px solid rgba(15, 23, 42, 0.1);
    background: #fff;
    box-shadow: 0 14px 36px rgba(15, 23, 42, 0.16);
}

.lang-switcher__option {
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 0.55rem;
    width: 100%;
    border: 0;
    background: transparent;
    border-radius: 0.65rem;
    padding: 0.55rem 0.6rem;
    cursor: pointer;
    text-align: left;
    color: #0f172a;
    font: 650 0.88rem/1.2 var(--font-sans, system-ui, sans-serif);
}

.lang-switcher__option:hover,
.lang-switcher__option:focus-visible {
    background: rgba(58, 46, 122, 0.06);
    outline: none;
}

.lang-switcher__option.is-active {
    background: rgba(76, 224, 195, 0.18);
}

.lang-switcher__option .lang-switcher__code {
    display: inline;
    opacity: 0.55;
    font-size: 0.75rem;
    font-weight: 800;
}

/* Indigo sidebar — kulaté tlačítko */
.sidebar .lang-switcher {
    width: auto;
    align-self: flex-start;
    margin: 0.35rem 0 0.45rem;
}

.sidebar .lang-switcher__btn {
    width: 2.65rem;
    height: 2.65rem;
    border-color: rgba(255, 255, 255, 0.28);
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
}

.sidebar .lang-switcher__btn:hover,
.sidebar .lang-switcher__btn:focus-visible {
    background: rgba(245, 158, 11, 0.28);
    border-color: var(--color-accent-amber, #f59e0b);
    color: #fff;
}

.sidebar .lang-switcher__menu {
    left: 0;
    right: auto;
    min-width: 12.5rem;
}

.lang-switcher--compact .lang-switcher__btn {
    width: 2.25rem;
    height: 2.25rem;
}

html[data-theme="dark"] .lang-switcher__btn {
    border-color: rgba(248, 250, 252, 0.16);
    background: rgba(15, 23, 42, 0.72);
    color: #f8fafc;
}

html[data-theme="dark"] .lang-switcher__menu {
    background: #ffffff;
    border-color: rgba(15, 23, 42, 0.1);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.35);
}

html[data-theme="dark"] .lang-switcher__option {
    color: #0f172a;
}

html[data-theme="dark"] .lang-switcher__option:hover,
html[data-theme="dark"] .lang-switcher__option:focus-visible {
    background: rgba(58, 46, 122, 0.08);
}

@media (prefers-reduced-motion: reduce) {
    .lang-switcher__btn:hover,
    .lang-switcher__btn:focus-visible {
        transform: none;
    }
}