/* ============================================================
   Стили для чата
   ============================================================ */

/* Базовый стиль элемента сообщения */
.chat-item {
    background: var(--bg-item-alt);
    border-radius: 12px;
    padding: 12px 16px;
    margin-bottom: 10px;
    border-left: 6px solid var(--green-border);
    box-shadow: 0 1px 4px rgba(0,0,0,0.3);
    transition: background 0.15s, border-left-color 0.15s, box-shadow 0.15s;
}

.chat-item:hover {
    background: var(--bg-hover-alt);
    border-left-color: var(--accent-line-hover-2);
    box-shadow: 0 4px 14px rgba(0,0,0,0.7);
}

/* Шапка сообщения */
.chat-item .chat-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 6px;
    flex-wrap: wrap;
}

.chat-item .chat-time {
    font-size: 0.8rem;
    font-weight: 500;
    color: var(--text-faint);
    letter-spacing: 0.2px;
}

.chat-item .chat-author {
    font-weight: 700;
    color: var(--amber);
    font-size: 0.95rem;
}

.chat-item .chat-lang-flag {
    font-size: 0.75rem;
    background: var(--bg-tag);
    padding: 1px 8px;
    border-radius: 10px;
    color: var(--text-dim);
}

/* Основной текст сообщения */
.chat-item .chat-message {
    font-size: 1rem;
    color: var(--text-strong);
    line-height: 1.5;
    word-break: break-word;
    margin-bottom: 4px;
}

/* Оригинальный текст (под основным) */
.chat-item .chat-original {
    font-size: 0.85rem;
    color: var(--text-faint);
    font-style: italic;
    border-top: 1px solid rgba(63, 77, 63, 0.2);
    padding-top: 4px;
    margin-top: 4px;
}

/* Контейнер для кнопок действий */
.chat-item .chat-actions {
    display: flex;
    gap: 6px;
    margin-top: 6px;
    flex-wrap: wrap;
}

/* Общий стиль для кнопок в чате */
.chat-item .chat-translate-btn,
.chat-item .chat-revert-btn {
    background: rgba(26, 34, 30, 0.8);
    color: var(--text-muted);
    border: 1px solid rgba(184, 124, 75, 0.2);
    border-radius: 20px;
    padding: 4px 14px;
    font-size: 0.7rem;
    font-weight: 400;
    cursor: pointer;
    transition: all 0.25s ease;
    font-family: 'Roboto', sans-serif;
    backdrop-filter: blur(2px);
    letter-spacing: 0.2px;
    line-height: 1.6;
}

.chat-item .chat-translate-btn:hover {
    background: rgba(184, 124, 75, 0.15);
    color: var(--cream);
    border-color: var(--accent);
    box-shadow: 0 0 16px rgba(184, 124, 75, 0.1);
    transform: translateY(-1px);
}

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

.chat-item .chat-translate-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none !important;
}

/* Кнопка "Вернуть" — чуть темнее */
.chat-item .chat-revert-btn {
    border-color: rgba(90, 90, 90, 0.25);
    color: var(--text-faint);
}

.chat-item .chat-revert-btn:hover {
    background: rgba(90, 90, 90, 0.15);
    color: var(--text-muted);
    border-color: rgba(90, 90, 90, 0.4);
    box-shadow: 0 0 16px rgba(90, 90, 90, 0.08);
    transform: translateY(-1px);
}

/* Индикатор загрузки */
.chat-loading {
    text-align: center;
    padding: 30px 20px;
    color: var(--text-dim);
}

.chat-loading-spinner {
    display: inline-block;
    width: 36px;
    height: 36px;
    border: 3px solid var(--spinner-track);
    border-top-color: var(--accent);
    border-radius: 50%;
    animation: chat-spin 0.8s linear infinite;
    margin-bottom: 12px;
}

@keyframes chat-spin {
    to { transform: rotate(360deg); }
}

/* Фильтр */
#chat-filter-area {
    display: flex;
    align-items: center;
    gap: 16px;
    background: var(--bg-inset);
    padding: 8px 18px;
    border-radius: 40px;
    margin-bottom: 20px;
    border: 1px solid var(--border-inset);
    box-shadow: inset 0 2px 4px rgba(0,0,0,0.4);
}

#chat-filter-area .material-icons {
    color: #b8b8a8;
}

#chat-filter {
    background: transparent;
    border: none;
    padding: 12px 0;
    font-size: 1rem;
    color: var(--text-bright);
    width: 100%;
    outline: none;
}

#chat-filter::placeholder {
    color: var(--placeholder);
    font-weight: 400;
    letter-spacing: 0.3px;
}

#chat-filter-clear {
    cursor: pointer;
    opacity: 0.5;
    transition: opacity 0.2s;
}

#chat-filter-clear:hover {
    opacity: 1;
}

/* ============================================================
   КНОПКА ОБНОВЛЕНИЯ (в шапке чата)
   ============================================================ */

.chat-refresh-btn {
    background: rgba(26, 34, 30, 0.8);
    color: var(--text-muted);
    border: 1px solid rgba(184, 124, 75, 0.25);
    border-radius: 20px;
    padding: 6px 18px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.25s ease;
    font-family: 'Roboto', sans-serif;
    backdrop-filter: blur(2px);
    display: flex;
    align-items: center;
    gap: 6px;
    letter-spacing: 0.3px;
    white-space: nowrap;
}

.chat-refresh-btn:hover {
    background: rgba(184, 124, 75, 0.12);
    color: var(--cream);
    border-color: var(--accent);
    box-shadow: 0 0 20px rgba(184, 124, 75, 0.1);
    transform: translateY(-1px);
}

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

.chat-refresh-btn .material-icons {
    font-size: 1.1rem;
}

.chat-refresh-btn.loading {
    opacity: 0.6;
    pointer-events: none;
}

/* ============================================================
   ПУСТОЕ СОСТОЯНИЕ
   ============================================================ */

.chat-empty {
    text-align: center;
    padding: 40px 20px;
    color: var(--text-ghost);
}

.chat-empty span {
    font-size: 2rem;
    display: block;
    margin-bottom: 8px;
}

.chat-empty p {
    font-size: 1rem;
}

/* ============================================================
   АДАПТИВНОСТЬ
   ============================================================ */

@media (max-width: 640px) {
    .chat-item .chat-header {
        gap: 6px;
        font-size: 0.8rem;
    }

    .chat-item .chat-time {
        font-size: 0.7rem;
    }

    .chat-item .chat-author {
        font-size: 0.85rem;
    }

    .chat-refresh-btn {
        font-size: 0.75rem;
        padding: 4px 12px;
    }

    .chat-refresh-btn span {
        display: none;
    }

    .chat-item .chat-translate-btn,
    .chat-item .chat-revert-btn {
        font-size: 0.65rem;
        padding: 3px 10px;
    }
}
/* ============================================================
   УПРАВЛЕНИЕ ОБНОВЛЕНИЕМ
   ============================================================ */

.chat-refresh-control {
    display: flex;
    align-items: center;
    gap: 6px;
}

.chat-auto-refresh-label {
    display: flex;
    align-items: center;
    gap: 4px;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 20px;
    background: rgba(26, 34, 30, 0.8);
    border: 1px solid rgba(184, 124, 75, 0.2);
    transition: all 0.25s ease;
    user-select: none;
}

.chat-auto-refresh-label:hover {
    background: rgba(184, 124, 75, 0.1);
    border-color: rgba(184, 124, 75, 0.3);
}

.chat-auto-refresh-checkbox {
    appearance: none;
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border: 2px solid var(--checkbox-border);
    border-radius: 3px;
    background: var(--bg-footer);
    cursor: pointer;
    position: relative;
    transition: all 0.2s;
    flex-shrink: 0;
}

.chat-auto-refresh-checkbox:checked {
    background: var(--green);
    border-color: var(--green);
}

.chat-auto-refresh-checkbox:checked::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--bg-footer);
    font-size: 10px;
    font-weight: 700;
}

.chat-auto-refresh-checkbox:focus {
    outline: none;
    box-shadow: 0 0 0 2px rgba(106, 154, 106, 0.3);
}

.chat-auto-refresh-text {
    font-size: 0.8rem;
    color: var(--text-muted);
    opacity: 0.7;
    transition: opacity 0.2s;
}

.chat-auto-refresh-label:hover .chat-auto-refresh-text {
    opacity: 1;
}

.chat-auto-refresh-checkbox:checked ~ .chat-auto-refresh-text {
    color: var(--green);
    opacity: 1;
}

/* Кнопка обновления скрывается при включенном автообновлении */
.chat-refresh-btn.hidden {
    display: none;
}