:root {
    --bg: #0d1117;
    --surface: #161b22;
    --border: #30363d;
    --text: #e6edf3;
    --muted: #8b949e;
    --accent: #388bfd;
    --accent-dim: #1f6feb33;
    --radius: 10px;
}

*,
*::before,
*::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    background: var(--bg);
    color: var(--text);
    font-family: var(--font);
    font-size: 14px;
    min-height: 100vh;
}

.translator-wrapper {
    display: flex;
    justify-content: center;
    align-items: flex-start;
    min-height: calc(100vh - 130px);
    padding: 2.5rem 1rem;
}

.container-fluid {
    max-width: 900px;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 0;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 14px;
    overflow: hidden;
}

.lang-row {
    display: grid;
    grid-template-columns: 1fr 64px 1fr;
    align-items: center;
    border-bottom: 1px solid var(--border);
}

.lang-side {
    padding: 0.75rem 1rem;
}

.lang-side:first-child {
    border-right: 1px solid var(--border);
}

.lang-btn {
    display: flex;
    align-items: center;
    gap: 0.45rem;
    background: transparent;
    border: none;
    color: var(--text);
    font-family: var(--font);
    font-size: 13px;
    cursor: pointer;
    padding: 4px 6px;
    border-radius: 6px;
    width: 100%;
    text-align: left;
    transition: background 0.15s, color 0.15s;
}

.lang-btn:hover {
    background: var(--accent-dim);
    color: var(--accent);
}

.lang-btn svg:first-child {
    color: var(--muted);
    flex-shrink: 0;
}

.lang-btn-label {
    flex: 1;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.lang-btn-chevron {
    color: var(--muted);
    flex-shrink: 0;
    transition: transform 0.2s ease;
}

.lang-btn.open .lang-btn-chevron {
    transform: rotate(180deg);
}

.swap-col {
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 0.5rem 0;
    border-right: 1px solid var(--border);
}

.swap-btn {
    background: var(--accent-dim);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--accent);
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: background 0.18s, border-color 0.18s, transform 0.18s;
}

.swap-btn:hover {
    background: #1f6feb55;
    border-color: var(--accent);
}

.swap-icon {
    width: 18px;
    height: 18px;
    transition: transform 0.35s ease;
}

.swap-btn.spinning .swap-icon {
    transform: rotate(180deg);
}

.textarea-row {
    display: grid;
    grid-template-columns: 1fr 1px 1fr;
    min-height: 200px;
}

.textarea-divider {
    background: var(--border);
    width: 1px;
}

.textarea-side {
    position: relative;
    display: flex;
    flex-direction: column;
}

.translator-textarea {
    background: transparent;
    border: none;
    color: var(--text);
    font-family: var(--font);
    font-size: 14px;
    line-height: 1.7;
    padding: 1.1rem 1.2rem;
    resize: none;
    outline: none;
    width: 100%;
    overflow: hidden;
}

.translator-textarea::placeholder {
    color: var(--muted);
}

.translator-textarea[readonly] {
    color: #b0c4de;
}

.char-count {
    position: absolute;
    bottom: 0.5rem;
    right: 0.75rem;
    font-size: 11px;
    color: var(--muted);
    pointer-events: none;
}

.clear-btn {
    position: absolute;
    top: 0.6rem;
    right: 0.6rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 50%;
    color: var(--muted);
    width: 22px;
    height: 22px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: color 0.15s, border-color 0.15s, background 0.15s;
    z-index: 2;
}

.clear-btn:hover {
    color: var(--text);
    border-color: var(--muted);
    background: #1f2937;
}

.copy-btn {
    position: absolute;
    bottom: 0.5rem;
    right: 0.75rem;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 6px;
    color: var(--muted);
    font-family: var(--font);
    font-size: 12px;
    padding: 3px 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: color 0.15s, border-color 0.15s;
}

.copy-btn:hover {
    color: var(--text);
    border-color: var(--muted);
}

.controls-row {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 0.75rem 1.2rem;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
}

.engine-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.engine-label {
    font-size: 12px;
    color: var(--muted);
    white-space: nowrap;
}

.translate-btn {
    margin-left: auto;
    background: var(--accent);
    color: #fff;
    border: none;
    border-radius: var(--radius);
    font-family: var(--font);
    font-size: 13px;
    font-weight: 600;
    letter-spacing: 0.04em;
    padding: 0.45rem 1.4rem;
    cursor: pointer;
    transition: background 0.15s, transform 0.1s;
}

.translate-btn:hover {
    background: #58a6ff;
}

.translate-btn:active {
    transform: scale(0.97);
}

.lang-search-dropdown {
    position: fixed;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 320px;
    max-height: 440px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.45);
}

.lang-search-header {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.65rem 0.85rem;
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.lang-search-input {
    flex: 1;
    background: transparent;
    border: none;
    color: var(--text);
    font-family: var(--font);
    font-size: 13px;
    outline: none;
}

.lang-search-input::placeholder {
    color: var(--muted);
}

.lang-search-close {
    background: transparent;
    border: none;
    color: var(--muted);
    cursor: pointer;
    display: flex;
    align-items: center;
    padding: 2px;
    border-radius: 4px;
    transition: color 0.15s;
}

.lang-search-close:hover {
    color: var(--text);
}

.lang-search-section-label {
    font-size: 11px;
    color: var(--muted);
    padding: 0.45rem 0.85rem 0.2rem;
    flex-shrink: 0;
    letter-spacing: 0.04em;
    text-transform: uppercase;
}

.lang-search-list {
    list-style: none;
    overflow-y: auto;
    padding: 0.2rem 0;
    flex-shrink: 1;
    max-height: 160px;
}

.lang-search-list:last-child {
    max-height: 200px;
}

.lang-search-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.38rem 0.85rem;
    font-size: 13px;
    color: var(--text);
    cursor: pointer;
    transition: background 0.12s;
    gap: 0.5rem;
}

.lang-search-item:hover {
    background: var(--accent-dim);
}

.lang-search-item.active {
    color: var(--accent);
}

.lang-fav-btn {
    background: transparent;
    border: none;
    color: var(--muted);
    cursor: pointer;
    font-size: 14px;
    line-height: 1;
    padding: 0 2px;
    transition: color 0.15s, transform 0.15s;
    flex-shrink: 0;
}

.lang-fav-btn:hover {
    color: #f5c542;
    transform: scale(1.2);
}

.lang-fav-btn.faved {
    color: #f5c542;
}

.lang-search-empty {
    font-size: 12px;
    color: var(--muted);
    padding: 0.4rem 0.85rem;
    font-style: italic;
}

.lang-search-overlay {
    position: fixed;
    inset: 0;
    z-index: 999;
    background: rgba(0, 0, 0, 0.35);
}

@media (max-width: 600px) {
    .lang-row {
        grid-template-columns: 1fr 52px 1fr;
    }

    .textarea-row {
        grid-template-columns: 1fr;
    }

    .textarea-divider {
        width: 100%;
        height: 1px;
    }

    .controls-row {
        justify-content: space-between;
    }

    .translate-btn {
        margin-left: 0;
    }

    .lang-search-dropdown {
        width: 90vw;
    }
}