/* Цветовые переменные */
.tc-chat-container {
    --tc-bg-app: #f0f2f5; --tc-bg-box: #ffffff; --tc-bg-header: #ffffff; --tc-bg-chat: #f0f2f5;
    --tc-text-main: #333333; --tc-text-muted: #777777; --tc-border: #dddddd;
    --tc-input-bg: #ffffff; --tc-msg-bg: #ffffff; --tc-msg-mine: #e1f5fe;
    --tc-hover: #f9f9f9; --tc-accent: #007cba; --tc-accent-hover: #006799; --tc-danger: #d63638;
    --tc-msg-mention: #fff3cd; --tc-msg-mention-border: #f59e0b;
}
.tc-chat-container.tc-dark-theme {
    --tc-bg-app: #121212; --tc-bg-box: #1e1e1e; --tc-bg-header: #2d2d2d; --tc-bg-chat: #121212;
    --tc-text-main: #e0e0e0; --tc-text-muted: #aaaaaa; --tc-border: #444444;
    --tc-input-bg: #2d2d2d; --tc-msg-bg: #383838; --tc-msg-mine: #004c70; --tc-hover: #333333;
    --tc-msg-mention: #382d12; --tc-msg-mention-border: #d97706;
}

/* Общий каркас */
.tc-chat-container { font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; position: fixed; top: 0; left: 0; right: 0; bottom: 0; background-color: var(--tc-bg-app); color: var(--tc-text-main); display: flex; justify-content: center; align-items: center; z-index: 99999; }

/* Авторизация */
.tc-auth-box { background: var(--tc-bg-box); padding: 30px; border-radius: 12px; box-shadow: 0 10px 25px rgba(0,0,0,0.1); max-width: 400px; width: 100%; text-align: center; }
.tc-auth-header h2 { margin: 0 0 10px; font-size: 24px; color: var(--tc-text-main); }
.tc-auth-header p { color: var(--tc-text-muted); font-size: 14px; margin-bottom: 25px; }
.tc-form-group { text-align: left; margin-bottom: 15px; }
.tc-form-group label { display: block; margin-bottom: 5px; font-weight: 600; font-size: 13px; color: var(--tc-text-main); }
.tc-input { width: 100%; padding: 12px; border: 1px solid var(--tc-border); border-radius: 6px; font-size: 16px; background: var(--tc-input-bg); color: var(--tc-text-main); }
select.tc-input { height: 48px; line-height: normal; padding: 10px 12px; appearance: auto; }
.tc-divider { display: flex; align-items: center; margin: 20px 0; color: var(--tc-text-muted); }
.tc-divider::before, .tc-divider::after { content: ''; flex: 1; border-bottom: 1px solid var(--tc-border); }
.tc-divider span { padding: 0 10px; font-size: 12px; text-transform: uppercase; }
.tc-btn-login { width: 100%; padding: 14px; background: var(--tc-accent); color: #fff; border: none; border-radius: 6px; font-size: 16px; font-weight: 600; cursor: pointer; transition: 0.3s; }
.tc-btn-login:hover { background: var(--tc-accent-hover); }
.tc-error-msg { color: var(--tc-danger); padding: 10px; font-size: 14px; }

/* Чат: Контейнер */
.tc-chat-fullscreen { position: absolute; top: 0; left: 0; right: 0; bottom: 0; width: 100%; height: 100%; background: var(--tc-bg-box); }
.tc-chat-layout { display: flex; width: 100%; height: 100%; overflow: hidden; }

/* Главная колонка чата (Сообщения + Ввод + Клавиатура) */
.tc-chat-main { flex: 1; display: flex; flex-direction: column; background: var(--tc-bg-chat); position: relative; min-width: 0; overflow: hidden; }

.tc-chat-header, .tc-sidebar-header { height: 65px; box-sizing: border-box; padding: 0 20px; background: var(--tc-bg-header); border-bottom: 1px solid var(--tc-border); display: flex; justify-content: space-between; align-items: center; flex-shrink: 0; }
.tc-chat-messages { flex: 1; padding: 20px; overflow-y: auto; display: flex; flex-direction: column; }
.tc-message { margin-bottom: 15px; max-width: 80%; display: flex; flex-direction: column; }
.tc-message-meta { margin-bottom: 5px; font-size: 13px; }
.tc-sender { font-weight: bold; color: var(--tc-accent); cursor: pointer; }
.tc-time { color: var(--tc-text-muted); margin-left: 10px; font-size: 11px; }
.tc-message-bubble { display: inline-block; background: var(--tc-msg-bg); color: var(--tc-text-main); padding: 10px 15px; border-radius: 8px; box-shadow: 0 1px 2px rgba(0,0,0,0.1); word-break: break-word; line-height: 1.4; margin: 0; }

/* Вложения файлов */
.tc-file-attachment { display: inline-flex; align-items: center; gap: 8px; color: var(--tc-accent); text-decoration: none; font-weight: 500; }
.tc-file-attachment:hover { text-decoration: underline; }
.tc-file-icon { font-size: 18px; text-decoration: none !important; }

/* Тумблер темы */
.tc-theme-switch-wrapper { display: flex; align-items: center; gap: 8px; font-size: 18px; }
.tc-switch { position: relative; display: inline-block; width: 48px; height: 26px; }
.tc-switch input { opacity: 0; width: 0; height: 0; }
.tc-slider { position: absolute; cursor: pointer; top: 0; left: 0; right: 0; bottom: 0; background-color: #e5e5ea; transition: .4s; border-radius: 26px; }
.tc-slider:before { position: absolute; content: ""; height: 22px; width: 22px; left: 2px; bottom: 2px; background-color: #ffffff; transition: .4s; border-radius: 50%; box-shadow: 0 1px 3px rgba(0,0,0,0.2); }
.tc-chat-container.tc-dark-theme .tc-slider { background-color: #24252b; border: 1px solid #363740; bottom: -1px; right: -1px; left: -1px; top: -1px; }
.tc-chat-container.tc-dark-theme .tc-slider:before { background-color: #8b8e9f; transform: translateX(22px); box-shadow: none; }

/* Зона ввода */
.tc-chat-layout p { margin: 0 !important; padding: 0 !important; }
.tc-chat-input-area > p, .tc-chat-header > p, .tc-sidebar-header > p { display: contents !important; }

.tc-chat-input-area { padding: 15px; background: var(--tc-bg-box); border-top: 1px solid var(--tc-border); display: flex; align-items: center; gap: 10px; width: 100%; box-sizing: border-box; flex-shrink: 0; }
.tc-icon-btn { background: none; border: none; font-size: 20px; cursor: pointer; padding: 5px; color: var(--tc-text-main); display: inline-block; flex-shrink: 0; }
.tc-emoji-wrapper { position: relative; flex-shrink: 0; }
.tc-emoji-picker { position: absolute; bottom: 100%; left: -50px; background: var(--tc-bg-box); border: 1px solid var(--tc-border); border-radius: 8px; padding: 10px; display: flex; gap: 5px; flex-wrap: wrap; width: 200px; box-shadow: 0 5px 15px rgba(0,0,0,0.1); z-index: 100; margin-bottom: 10px; }
.tc-emoji-picker span { cursor: pointer; font-size: 20px; padding: 5px; border-radius: 4px; transition: 0.2s; }
.tc-emoji-picker span:hover { background: var(--tc-hover); }

#tc-message-input { flex: 1 1 auto; width: 100% !important; resize: none; padding: 12px; border: 1px solid var(--tc-border); border-radius: 20px; font-family: inherit; outline: none; max-height: 120px; overflow-y: auto; background: var(--tc-input-bg); color: var(--tc-text-main); }
.tc-btn-send { background: var(--tc-accent); color: #fff; border: none; padding: 10px 20px; border-radius: 20px; font-weight: bold; cursor: pointer; margin-bottom: 2px; flex-shrink: 0; }

/* Выделение сообщения-обращения */
.tc-message-bubble.tc-mentioned {
    background: var(--tc-msg-mention) !important;
    border-left: 4px solid var(--tc-msg-mention-border);
    box-shadow: 0 2px 8px rgba(245, 158, 11, 0.15);
}

/* Боковая панель */
.tc-chat-sidebar { position: relative; width: 250px; background: var(--tc-bg-box); display: flex; flex-direction: column; transition: width 0.3s ease; border-left: 1px solid var(--tc-border); flex-shrink: 0; }
.tc-sidebar-content { width: 250px; flex: 1; display: flex; flex-direction: column; overflow: hidden; transition: opacity 0.2s; }
.tc-chat-sidebar.collapsed { width: 0; }
.tc-chat-sidebar.collapsed .tc-sidebar-content { opacity: 0; pointer-events: none; }
.tc-sidebar-handle { position: absolute; left: -28px; top: 50%; transform: translateY(-50%); width: 28px; height: 50px; background: var(--tc-bg-box); border: 1px solid var(--tc-border); border-right: none; border-radius: 8px 0 0 8px; cursor: pointer; display: flex; align-items: center; justify-content: center; z-index: 10; color: var(--tc-text-muted); box-shadow: -2px 0 5px rgba(0,0,0,0.02); }
.tc-handle-icon { transition: transform 0.3s ease; }
.tc-chat-sidebar.collapsed .tc-handle-icon { transform: rotate(180deg); }
.tc-sidebar-header h3 { margin: 0; font-size: 16px; color: var(--tc-text-main); }
.tc-online-list { list-style: none; margin: 0; padding: 0; overflow-y: auto; flex: 1; }
.tc-online-item { padding: 12px 15px; border-bottom: 1px solid var(--tc-border); cursor: pointer; display: flex; align-items: center; color: var(--tc-text-main); }
.tc-online-item:hover { background: var(--tc-hover); }
.tc-status-dot { width: 8px; height: 8px; background: #4caf50; border-radius: 50%; margin-right: 10px; display: inline-block; }
.tc-admin-user { font-weight: bold; color: var(--tc-danger); }

@media (max-width: 768px) {
    .tc-chat-sidebar { position: absolute; right: 0; height: 100%; z-index: 50; box-shadow: -5px 0 15px rgba(0,0,0,0.1); }
    .tc-chat-sidebar.collapsed { width: 0; border-left: none; }
}

/* Меню пользователя */

.tc-logout-icon { padding: 6px; display: inline-flex; align-items: center; justify-content: center; background: transparent; border: 1px solid transparent; cursor: pointer; color: var(--tc-text-muted); border-radius: 6px; transition: 0.15s; }
.tc-logout-icon:hover { color: var(--tc-danger); background: var(--tc-hover); border-color: var(--tc-border); }

.tc-header-info { display: flex; align-items: center; gap: 8px; }
.tc-user-menu-wrapper { position: relative; }
.tc-user-menu-trigger { background: none; border: 1px solid transparent; cursor: pointer; display: inline-flex; align-items: center; gap: 6px; font-weight: 600; font-size: 14px; color: var(--tc-text-main); padding: 5px 10px; border-radius: 6px; transition: background 0.15s, border-color 0.15s; white-space: nowrap; }
.tc-user-menu-trigger:hover, .tc-user-menu-trigger.open { background: var(--tc-hover); border-color: var(--tc-border); }
.tc-chevron { flex-shrink: 0; transition: transform 0.2s ease; }
.tc-user-menu-trigger.open .tc-chevron { transform: rotate(180deg); }

.tc-user-dropdown { position: absolute; top: calc(100% + 6px); left: 0; background: var(--tc-bg-box); border: 1px solid var(--tc-border); border-radius: 10px; box-shadow: 0 8px 28px rgba(0,0,0,.13); min-width: 190px; z-index: 10000; overflow: hidden; padding: 5px 0; }
.tc-dropdown-item { display: flex; align-items: center; gap: 10px; padding: 10px 16px; color: var(--tc-text-main); text-decoration: none; font-size: 14px; width: 100%; text-align: left; background: none; border: none; cursor: pointer; transition: background 0.13s; box-sizing: border-box; }
.tc-dropdown-item:hover { background: var(--tc-hover); }
.tc-dropdown-item svg { flex-shrink: 0; opacity: 0.7; }
.tc-dropdown-item--disabled { opacity: 0.4; cursor: default; pointer-events: none; }
.tc-dropdown-divider { border: none; border-top: 1px solid var(--tc-border); margin: 4px 0; }

/* Удаление сообщения */
.tc-message-meta { position: relative; display: flex; align-items: center; gap: 4px; }
.tc-msg-delete { background: none; border: none; cursor: pointer; color: var(--tc-text-muted); padding: 2px 4px; border-radius: 4px; opacity: 0; transition: opacity 0.15s, color 0.15s; line-height: 1; display: inline-flex; align-items: center; flex-shrink: 0; margin-left: 4px; }
.tc-message:hover .tc-msg-delete { opacity: 1; }
.tc-msg-delete:hover { color: var(--tc-danger); }

/* Превью изображения */
.tc-img-attachment { display: inline-flex; flex-direction: column; align-items: flex-start; gap: 5px; text-decoration: none; color: var(--tc-text-main); max-width: 220px; }
.tc-img-thumb { display: block; max-width: 220px; max-height: 160px; width: auto; height: auto; border-radius: 8px; object-fit: cover; border: 1px solid var(--tc-border); cursor: pointer; transition: opacity 0.15s; }
.tc-img-thumb:hover { opacity: 0.88; }
.tc-img-name { font-size: 11px; color: var(--tc-text-muted); word-break: break-all; max-width: 220px; text-align: left; }

/* Системные уведомления */
.tc-message--system { align-self: center; display: flex; align-items: center; gap: 8px; margin: 6px auto; max-width: 90%; }
.tc-system-text { font-size: 12px; color: var(--tc-text-muted); background: var(--tc-hover); border: 1px solid var(--tc-border); border-radius: 20px; padding: 3px 12px; white-space: nowrap; }
.tc-system-time { font-size: 11px; color: var(--tc-text-muted); flex-shrink: 0; }


/* =========================================
   ДОПОЛНИТЕЛЬНЫЕ СТИЛИ (СКРОЛЛБАРЫ)
   ========================================= */

/* 1. Убираем полосу прокрутки основного окна (так как чат занимает 100% экрана) */
html, body {
    overflow: hidden !important;
}

/* 2. Тёмный скроллбар для диалогов, списка онлайн и поля ввода в тёмной теме (Chrome, Edge, Safari, Opera) */
.tc-chat-container.tc-dark-theme *::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}
.tc-chat-container.tc-dark-theme *::-webkit-scrollbar-track {
    background: transparent; /* Прозрачный трек, чтобы сливался с фоном */
}
.tc-chat-container.tc-dark-theme *::-webkit-scrollbar-thumb {
    background-color: #555; /* Тёмно-серый ползунок */
    border-radius: 4px;
}
.tc-chat-container.tc-dark-theme *::-webkit-scrollbar-thumb:hover {
    background-color: #777; /* Чуть светлее при наведении */
}

/* 3. Тёмный скроллбар для Firefox */
.tc-chat-container.tc-dark-theme * {
    scrollbar-width: thin;
    scrollbar-color: #555 transparent;
}


/* =========================================
   КЛАВИАТУРА ДЛЯ ЧАТА (ВСТРАИВАЕТСЯ В tc-chat-main)
   ========================================= */
#tc-osk {
    display: none; width: 100%;
    background: rgba(209, 213, 219, 0.95);
    -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
    padding: 10px 4px 16px; box-shadow: 0 -4px 24px rgba(0,0,0,0.1);
    user-select: none; -webkit-user-select: none;
    border-top: 1px solid rgba(255,255,255,0.4);
    flex-shrink: 0; /* Клавиатура не сжимается флексом */
    z-index: 100;
}
#tc-osk.active { display: block; animation: oskSlideUp 0.25s cubic-bezier(0.2, 0.8, 0.2, 1) forwards; }
@keyframes oskSlideUp { from { transform: translateY(20px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }

.osk-panel { max-width: 860px; margin: 0 auto; }
.osk-row { display: flex; justify-content: center; gap: 6px; margin-bottom: 6px; }
.osk-row:last-child { margin-bottom: 0; }

.osk-btn {
    background: #fcfcfc; border-radius: 6px;
    box-shadow: 0 1px 1px rgba(0,0,0,0.25);
    display: flex; align-items: center; justify-content: center; gap: 4px;
    cursor: pointer; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    color: #111; transition: background 0.1s, transform 0.1s;
}
.osk-btn:active { background: #e5e7eb; transform: translateY(1px); box-shadow: 0 0 0 rgba(0,0,0,0); }

.osk-text-btn { font-size: 21px; font-weight: 400; flex: 1; height: 46px; max-width: 56px; }

.osk-btn.wide { flex: 1.5; max-width: 80px; font-size: 15px; font-weight: 500; background: #aeb3bc; color: #111; }
.osk-btn.wide:active { background: #9ca3af; }
.osk-btn.space { flex: 5; max-width: 400px; font-size: 16px; font-weight: 500; }
.osk-btn.primary { background: #007aff; color: #fff; font-weight: 600; box-shadow: 0 1px 1px rgba(0,0,0,0.2); }
.osk-btn.primary:active { background: #0062cc; color: #fff; }
.osk-btn.shift-active { background: #ffffff; color: #000; box-shadow: 0 1px 1px rgba(0,0,0,0.25), 0 0 0 2px #007aff inset; }

/* Темная тема клавиатуры */
.tc-chat-container.tc-dark-theme #tc-osk { background: rgba(36, 36, 36, 0.95); border-top: 1px solid #444; }
.tc-chat-container.tc-dark-theme .osk-btn { background: #555; color: #f1f1f1; box-shadow: 0 1px 2px rgba(0,0,0,0.5); }
.tc-chat-container.tc-dark-theme .osk-btn:active { background: #444; }
.tc-chat-container.tc-dark-theme .osk-btn.wide { background: #3a3a3a; color: #f1f1f1; }
.tc-chat-container.tc-dark-theme .osk-btn.wide:active { background: #2a2a2a; }
.tc-chat-container.tc-dark-theme .osk-btn.primary { background: var(--tc-accent); color: #fff; }
.tc-chat-container.tc-dark-theme .osk-btn.primary:active { background: var(--tc-accent-hover); color: #fff; }
.tc-chat-container.tc-dark-theme .osk-btn.shift-active { background: #555; box-shadow: 0 1px 2px rgba(0,0,0,0.5), 0 0 0 2px var(--tc-accent) inset; }

@media (max-width: 1023px) { #tc-osk, #tc-osk-btn { display: none !important; } }