/* Conversation-scoped AI translation for Messenger. */

.messenger-translation-control {
    width: auto;
    min-width: 34px;
    padding: 0 9px;
    gap: 6px;
    white-space: nowrap;
}

.messenger-translation-control.active {
    color: var(--primary);
    background: rgba(99, 102, 241, 0.1);
    box-shadow: inset 0 0 0 1px rgba(99, 102, 241, 0.16);
}

.messenger-translation-control span {
    font-size: 0.75rem;
    font-weight: 600;
}

#messenger-translation-status-slot:empty,
#messenger-translation-compose-gate:empty {
    display: none;
}

.messenger-translation-status {
    display: inline-flex;
    align-items: center;
    gap: 5px;
    max-width: 100%;
    margin-top: 3px;
    padding: 2px 8px;
    border-radius: 999px;
    color: #4f46e5;
    background: rgba(99, 102, 241, 0.09);
    border: 1px solid rgba(99, 102, 241, 0.14);
    font-size: 0.67rem;
    font-weight: 600;
    line-height: 1.35;
}

.messenger-translation-status span {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.messenger-translation-gate {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 8px 12px;
    border-bottom: 1px solid var(--border-color);
    font-size: 0.78rem;
    line-height: 1.35;
}

.messenger-translation-gate > span {
    display: flex;
    align-items: center;
    gap: 7px;
}

.messenger-translation-gate.monitor {
    color: #3730a3;
    background: rgba(99, 102, 241, 0.08);
    border-color: rgba(99, 102, 241, 0.18);
}

.messenger-translation-gate.human {
    justify-content: flex-start;
    color: #166534;
    background: rgba(34, 197, 94, 0.08);
    border-color: rgba(34, 197, 94, 0.18);
}

.message-translation-main {
    white-space: normal;
}

.message-translation-toggle {
    width: 100%;
    margin-top: 5px;
    padding: 5px 0 0;
    display: flex;
    align-items: center;
    gap: 6px;
    border: 0;
    border-top: 1px solid rgba(100, 116, 139, 0.18);
    color: inherit;
    background: transparent;
    opacity: 0.7;
    font: inherit;
    font-size: 0.64rem;
    text-align: left;
    cursor: pointer;
}

.message-translation-toggle span:nth-child(2) {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.message-translation-toggle i {
    margin-left: auto;
    transition: transform 160ms ease;
}

.message-translation-toggle[aria-expanded="true"] i {
    transform: rotate(180deg);
}

.message-translation-original {
    margin-top: 6px;
    padding: 7px 8px;
    border-radius: 7px;
    background: rgba(15, 23, 42, 0.06);
    font-size: 0.77rem;
    line-height: 1.4;
}

.message-translation-original[hidden] {
    display: none !important;
}

.message-translation-original strong {
    display: block;
    margin-bottom: 3px;
    opacity: 0.7;
    font-size: 0.63rem;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.message-translation-state {
    display: flex;
    align-items: center;
    gap: 6px;
    margin-top: 5px;
    padding-top: 4px;
    border-top: 1px solid rgba(100, 116, 139, 0.16);
    font-size: 0.66rem;
}

.message-translation-state.pending {
    opacity: 0.66;
}

.message-translation-state.failed {
    color: var(--danger);
}

.message-translation-state.failed button {
    border: 0;
    padding: 0;
    color: inherit;
    background: none;
    font: inherit;
    font-weight: 700;
    text-decoration: underline;
    cursor: pointer;
}

.message-translation-spinner {
    width: 10px;
    height: 10px;
    border: 2px solid currentColor;
    border-right-color: transparent;
    border-radius: 50%;
    animation: messengerTranslationSpin 700ms linear infinite;
}

@keyframes messengerTranslationSpin {
    to { transform: rotate(360deg); }
}

.messenger-translation-dialog {
    width: min(560px, calc(100vw - 32px));
    max-height: min(780px, calc(100vh - 32px));
}

.messenger-translation-dialog .modal-header {
    align-items: flex-start;
}

.messenger-translation-dialog .modal-header h3 {
    display: flex;
    align-items: center;
    gap: 8px;
}

.messenger-translation-dialog .modal-header p {
    margin: 4px 0 0;
    color: var(--text-muted);
    font-size: 0.75rem;
}

.messenger-translation-switch-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-secondary);
}

.messenger-translation-switch-row > span,
.messenger-translation-send-mode label > span {
    display: flex;
    flex-direction: column;
    gap: 3px;
}

.messenger-translation-switch-row small,
.messenger-translation-form-grid small,
.messenger-translation-send-mode small {
    color: var(--text-muted);
    font-size: 0.7rem;
    font-weight: 400;
}

.messenger-translation-switch-row input {
    width: 20px;
    height: 20px;
    accent-color: var(--primary);
    flex: 0 0 auto;
}

.messenger-translation-form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 12px;
    margin-top: 14px;
}

.messenger-translation-form-grid label {
    display: flex;
    flex-direction: column;
    gap: 6px;
    color: var(--text-primary);
    font-size: 0.78rem;
    font-weight: 600;
}

.messenger-translation-form-grid select {
    width: 100%;
    min-height: 42px;
    padding: 0 10px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    background: var(--bg-card);
    font: inherit;
}

.messenger-translation-send-mode {
    margin: 16px 0 0;
    padding: 0;
    border: 0;
}

.messenger-translation-send-mode legend {
    margin-bottom: 7px;
    font-size: 0.78rem;
    font-weight: 700;
}

.messenger-translation-send-mode label {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    padding: 10px 12px;
    border: 1px solid var(--border-color);
    border-radius: 9px;
    cursor: pointer;
}

.messenger-translation-send-mode label + label {
    margin-top: 8px;
}

.messenger-translation-send-mode label:has(input:checked) {
    border-color: rgba(99, 102, 241, 0.55);
    background: rgba(99, 102, 241, 0.06);
}

.messenger-translation-send-mode input {
    margin-top: 3px;
    accent-color: var(--primary);
}

.messenger-translation-error {
    margin-top: 12px;
    padding: 9px 10px;
    border: 1px solid rgba(239, 68, 68, 0.24);
    border-radius: 8px;
    color: var(--danger);
    background: rgba(239, 68, 68, 0.07);
    font-size: 0.75rem;
}

.messenger-translation-error[hidden] {
    display: none !important;
}

.messenger-translation-preview-block {
    padding: 12px;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    background: var(--bg-secondary);
}

.messenger-translation-preview-block.translated {
    border-color: rgba(99, 102, 241, 0.28);
    background: rgba(99, 102, 241, 0.06);
}

.messenger-translation-preview-block > span {
    color: var(--text-muted);
    font-size: 0.67rem;
    font-weight: 700;
    letter-spacing: 0.02em;
    text-transform: uppercase;
}

.messenger-translation-preview-block p {
    margin: 7px 0 0;
    color: var(--text-primary);
    white-space: pre-wrap;
}

.messenger-translation-preview-arrow {
    padding: 7px;
    color: var(--text-muted);
    text-align: center;
}

[data-theme="dark"] .messenger-translation-status {
    color: #c7d2fe;
}

[data-theme="dark"] .messenger-translation-gate.monitor {
    color: #c7d2fe;
}

[data-theme="dark"] .messenger-translation-gate.human {
    color: #bbf7d0;
}

[data-theme="dark"] .message-translation-original {
    background: rgba(255, 255, 255, 0.08);
}

@media (max-width: 768px) {
    .messenger-translation-control {
        width: 30px;
        min-width: 30px;
        padding: 0;
    }

    .messenger-translation-control span {
        display: none;
    }

    .messenger-translation-gate {
        align-items: stretch;
        flex-direction: column;
        gap: 7px;
    }

    .messenger-translation-gate .btn {
        width: 100%;
        min-height: 40px;
    }

    .messenger-translation-form-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    .messenger-translation-status {
        max-width: min(58vw, 220px);
    }

    .messenger-translation-modal {
        align-items: flex-end;
    }

    .messenger-translation-dialog {
        width: 100%;
        max-width: 100%;
        max-height: calc(100vh - 16px);
        min-width: 0;
        border-radius: 16px 16px 0 0;
    }

    .messenger-translation-dialog .modal-body {
        padding: 14px;
    }

    .messenger-translation-dialog .modal-footer {
        position: sticky;
        bottom: 0;
        background: var(--bg-card);
    }

    .messenger-translation-dialog .modal-footer .btn {
        flex: 1 1 0;
        min-height: 44px;
    }

    .message-translation-toggle {
        min-height: 30px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .message-translation-spinner {
        animation-duration: 1400ms;
    }
}