.lang-switcher {
    position: relative;
    display: inline-block;
    font-family: inherit;
}

.lang-switcher__button {
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.4rem 0.9rem 0.4rem 0.75rem;
    background: linear-gradient(
        135deg,
        rgba(42, 42, 62, 0.9),
        rgba(38, 38, 58, 0.9),
        rgba(48, 48, 70, 0.9),
        rgba(42, 42, 62, 0.9)
    );
    background-size: 250% 250%;
    animation: langButtonShimmer 9s ease-in-out infinite;
    border: 1px solid rgba(74, 111, 165, 0.5);
    border-radius: 30px;
    color: #d8d8e8;
    font-size: 0.9rem;
    font-weight: 500;
    font-family: inherit;
    line-height: 1;
    cursor: pointer;
    outline: none;
    overflow: hidden;
    transition:
        transform 0.28s cubic-bezier(0.34, 1.56, 0.64, 1),
        box-shadow 0.3s ease,
        border-color 0.3s ease,
        color 0.3s ease;
}

.lang-switcher__button::before {
    content: '';
    position: absolute;
    inset: 0;
    background: radial-gradient(
        circle at var(--mx, 50%) var(--my, 50%),
        rgba(150, 180, 230, 0.28),
        transparent 60%
    );
    opacity: 0;
    transition: opacity 0.35s ease;
    pointer-events: none;
}

.lang-switcher__button:hover::before { opacity: 1; }

.lang-switcher__button:hover {
    transform: translateY(-2px);
    color: #fff;
    border-color: #7a8cb4;
    box-shadow:
        0 8px 22px rgba(74, 111, 165, 0.4),
        0 0 0 4px rgba(74, 111, 165, 0.12);
}

.lang-switcher__button:active {
    transform: translateY(0) scale(0.97);
}

.lang-switcher__button:focus-visible {
    box-shadow:
        0 0 0 3px rgba(122, 140, 180, 0.6),
        0 8px 22px rgba(74, 111, 165, 0.4);
}

@keyframes langButtonShimmer {
    0%, 100% { background-position: 0% 50%; }
    50%      { background-position: 100% 50%; }
}

.lang-switcher__globe {
    display: inline-block;
    font-size: 1rem;
    line-height: 1;
    transform-origin: center;
    transition: transform 0.6s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.lang-switcher__button:hover .lang-switcher__globe {
    transform: rotate(360deg);
}

.lang-switcher.is-open .lang-switcher__globe {
    animation: langGlobeSpin 1.6s linear infinite;
}

@keyframes langGlobeSpin {
    from { transform: rotate(0deg); }
    to   { transform: rotate(360deg); }
}

.lang-switcher__chevron {
    width: 14px;
    height: 14px;
    opacity: 0.65;
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1),
                opacity 0.25s ease;
}

.lang-switcher__button:hover .lang-switcher__chevron { opacity: 1; }

.lang-switcher.is-open .lang-switcher__chevron {
    transform: rotate(180deg);
    opacity: 1;
}

.lang-switcher__current-flag {
    font-size: 1.05rem;
    line-height: 1;
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.lang-switcher__current-name { line-height: 1; }

.lang-switcher.just-changed .lang-switcher__current-flag {
    animation: langFlagPop 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.lang-switcher.just-changed .lang-switcher__current-name {
    animation: langNamePop 0.5s ease;
}

@keyframes langFlagPop {
    0%   { transform: scale(1) rotate(0deg); }
    40%  { transform: scale(1.35) rotate(-12deg); }
    100% { transform: scale(1) rotate(0deg); }
}

@keyframes langNamePop {
    0%   { transform: translateY(0); opacity: 1; }
    40%  { transform: translateY(-4px); opacity: 0.6; }
    100% { transform: translateY(0); opacity: 1; }
}

.lang-switcher__menu {
    position: absolute;
    bottom: calc(100% + 12px);
    left: 50%;
    transform: translateX(-50%) translateY(10px) scale(0.94);
    transform-origin: bottom center;
    list-style: none;
    margin: 0;
    padding: 6px;
    min-width: 190px;
    background: linear-gradient(
        180deg,
        rgba(44, 44, 64, 0.98),
        rgba(30, 30, 48, 0.98)
    );
    border: 1px solid rgba(74, 111, 165, 0.45);
    border-radius: 14px;
    box-shadow:
        0 14px 44px rgba(0, 0, 0, 0.6),
        0 0 0 1px rgba(255, 255, 255, 0.03) inset;
    backdrop-filter: blur(14px) saturate(150%);
    -webkit-backdrop-filter: blur(14px) saturate(150%);
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
    z-index: 100;
    transition:
        opacity 0.22s ease,
        transform 0.32s cubic-bezier(0.34, 1.56, 0.64, 1),
        visibility 0s linear 0.32s;
}

.lang-switcher.is-open .lang-switcher__menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0) scale(1);
    transition:
        opacity 0.22s ease,
        transform 0.36s cubic-bezier(0.34, 1.56, 0.64, 1),
        visibility 0s;
}

.lang-switcher__menu::after {
    content: '';
    position: absolute;
    bottom: -6px;
    left: 50%;
    transform: translateX(-50%) rotate(45deg);
    width: 12px;
    height: 12px;
    background: rgba(36, 36, 54, 0.98);
    border-right: 1px solid rgba(74, 111, 165, 0.45);
    border-bottom: 1px solid rgba(74, 111, 165, 0.45);
    border-bottom-right-radius: 3px;
}

.lang-switcher__item {
    display: flex;
    align-items: center;
    gap: 0.65rem;
    padding: 0.5rem 0.8rem;
    border-radius: 9px;
    color: #cfcfe0;
    font-size: 0.9rem;
    cursor: pointer;
    position: relative;
    opacity: 0;
    transform: translateX(-10px);
    outline: none;
    transition:
        background 0.2s ease,
        color 0.2s ease,
        transform 0.24s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.lang-switcher.is-open .lang-switcher__item {
    opacity: 1;
    transform: translateX(0);
    transition:
        opacity 0.3s ease,
        transform 0.38s cubic-bezier(0.34, 1.56, 0.64, 1),
        background 0.2s ease,
        color 0.2s ease;
}

.lang-switcher.is-open .lang-switcher__item:nth-child(1) { transition-delay: 0.02s, 0.02s, 0s, 0s; }
.lang-switcher.is-open .lang-switcher__item:nth-child(2) { transition-delay: 0.06s, 0.06s, 0s, 0s; }
.lang-switcher.is-open .lang-switcher__item:nth-child(3) { transition-delay: 0.10s, 0.10s, 0s, 0s; }
.lang-switcher.is-open .lang-switcher__item:nth-child(4) { transition-delay: 0.14s, 0.14s, 0s, 0s; }
.lang-switcher.is-open .lang-switcher__item:nth-child(5) { transition-delay: 0.18s, 0.18s, 0s, 0s; }

.lang-switcher__item:hover,
.lang-switcher__item:focus-visible {
    background: rgba(74, 111, 165, 0.24);
    color: #fff;
    transform: translateX(4px);
}

.lang-switcher__item.is-selected {
    background: linear-gradient(
        135deg,
        rgba(74, 111, 165, 0.38),
        rgba(106, 74, 138, 0.32)
    );
    color: #fff;
}

.lang-switcher__flag {
    font-size: 1.1rem;
    line-height: 1;
    transition: transform 0.35s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.lang-switcher__item:hover .lang-switcher__flag {
    transform: scale(1.22) rotate(-8deg);
}

.lang-switcher__name { flex: 1; }

.lang-switcher__check {
    opacity: 0;
    transform: scale(0.4);
    color: #8fc0ff;
    font-weight: 700;
    font-size: 0.95rem;
    transition:
        opacity 0.3s ease,
        transform 0.36s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.lang-switcher__item.is-selected .lang-switcher__check {
    opacity: 1;
    transform: scale(1);
}

.lang-switcher.is-changing .lang-switcher__button {
    animation: langPulse 0.6s ease;
}

@keyframes langPulse {
    0%   { box-shadow: 0 0 0 0 rgba(127, 180, 255, 0.7); }
    70%  { box-shadow: 0 0 0 16px rgba(127, 180, 255, 0); }
    100% { box-shadow: 0 0 0 0 rgba(127, 180, 255, 0); }
}

body.lang-changing {
    animation: langPageFade 0.4s ease forwards;
}

@keyframes langPageFade {
    to { opacity: 0; transform: scale(0.995); }
}

@media (prefers-reduced-motion: reduce) {
    .lang-switcher__button,
    .lang-switcher__button::before,
    .lang-switcher__globe,
    .lang-switcher__chevron,
    .lang-switcher__current-flag,
    .lang-switcher__current-name,
    .lang-switcher__menu,
    .lang-switcher__item,
    .lang-switcher__flag,
    .lang-switcher__check,
    body.lang-changing {
        animation: none !important;
        transition: none !important;
    }
    .lang-switcher__item { opacity: 1; transform: none; }
    .lang-switcher__menu { transform: translateX(-50%) translateY(0) scale(1); }
}

@media (max-width: 480px) {
    .lang-switcher__button {
        padding: 0.35rem 0.75rem 0.35rem 0.65rem;
        font-size: 0.85rem;
    }
    .lang-switcher__menu { min-width: 170px; }
    .lang-switcher__item { padding: 0.45rem 0.7rem; font-size: 0.85rem; }
}