/* ============================================
   Чат техподдержки M16 — Telegram Style
   Light + Dark theme с автопереключением
   ============================================ */

/* ---- Светлая тема (по умолчанию) ---- */
:root {
    --tg-header-bg: #417DAE;
    --tg-header-text: #ffffff;
    --tg-chat-bg: #E6DECF;
    --tg-page-bg: #e8e8e8;
    --tg-card-bg: #ffffff;
    --tg-input-bg: #ffffff;
    --tg-input-border: #d4d4d4;
    --tg-input-text: #000000;
    --tg-bubble-out: #EEFFDE;
    --tg-bubble-in: #ffffff;
    --tg-tail-out: #EEFFDE;
    --tg-tail-in: #ffffff;
    --tg-text: #000000;
    --tg-text-secondary: #868686;
    --tg-meta-out: #5DB961;
    --tg-meta-in: #a0a0a0;
    --tg-link-out: #155796;
    --tg-link-in: #3390ec;
    --tg-border: #e0e0e0;
    --tg-shadow: 0 1px 2px rgba(0,0,0,0.13);
    --tg-send-bg: #4eaf4e;
    --tg-send-hover: #3d9d3d;
    --tg-danger: #e53935;
    --tg-success: #43a047;
    --tg-warning: #fb8c00;
    --tg-hover: rgba(0,0,0,0.04);
    --tg-badge-bg: #e53935;
    --tg-badge-text: #fff;
    --tg-admin-header: linear-gradient(135deg,#1e3a5f,#0f172a);
    --tg-admin-accent: #f59e0b;
    --tg-bubble-deleted: rgba(0,0,0,0.04);
    --tg-typing-dots: #868686;
    --tg-emergency-bg: #fef3c7;
    --tg-emergency-text: #92400e;
    --tg-error-bg: #fef2f2;
    --tg-error-text: #e53935;
    --tg-error-border: #fecaca;
}

/* ---- Тёмная тема ---- */
[data-theme="dark"] {
    --tg-header-bg: #212d3b;
    --tg-header-text: #d4d4d4;
    --tg-chat-bg: #0E1621;
    --tg-page-bg: #0E1621;
    --tg-card-bg: #17212b;
    --tg-input-bg: #242f3d;
    --tg-input-border: #3b4a59;
    --tg-input-text: #e0e0e0;
    --tg-bubble-out: #2B5278;
    --tg-bubble-in: #182533;
    --tg-tail-out: #2B5278;
    --tg-tail-in: #182533;
    --tg-text: #e0e0e0;
    --tg-text-secondary: #6c7883;
    --tg-meta-out: #6baedc;
    --tg-meta-in: #6c7883;
    --tg-link-out: #7dc8f7;
    --tg-link-in: #6ab2f2;
    --tg-border: #2b3945;
    --tg-shadow: 0 1px 2px rgba(0,0,0,0.35);
    --tg-send-bg: #3390ec;
    --tg-send-hover: #2b7fd4;
    --tg-danger: #ff5252;
    --tg-success: #66bb6a;
    --tg-warning: #ffa726;
    --tg-hover: rgba(255,255,255,0.05);
    --tg-badge-bg: #e53935;
    --tg-badge-text: #fff;
    --tg-admin-header: linear-gradient(135deg,#151e28,#0a1018);
    --tg-admin-accent: #d97706;
    --tg-bubble-deleted: rgba(255,255,255,0.04);
    --tg-typing-dots: #6c7883;
    --tg-emergency-bg: #3b2f1a;
    --tg-emergency-text: #fbbf24;
    --tg-error-bg: #2a1515;
    --tg-error-text: #ff5252;
    --tg-error-border: #4a2020;
}

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

html, body {
    height: 100%;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    font-size: 16px;
    line-height: 1.5;
    color: var(--tg-text);
    background: var(--tg-page-bg);
    overflow: hidden;
    position: fixed;
    width: 100%;
    transition: background 0.3s;
}

a { color: var(--tg-link-in); }

/* ============================================
   Страница входа
   ============================================ */
.login-page {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    padding: 20px;
    background: var(--tg-page-bg);
    position: relative;
}

.login-container { width: 100%; max-width: 400px; }

.login-card {
    background: var(--tg-card-bg);
    border-radius: 12px;
    box-shadow: var(--tg-shadow);
    padding: 32px;
}

.login-header { text-align: center; margin-bottom: 28px; }
.login-header h1 { font-size: 24px; font-weight: 700; color: var(--tg-text); margin-bottom: 4px; }
.login-header .subtitle { color: var(--tg-text-secondary); font-size: 14px; }

.form-group { margin-bottom: 18px; }
.form-group label { display: block; font-size: 14px; font-weight: 500; color: var(--tg-text); margin-bottom: 6px; }
.form-group input {
    width: 100%;
    padding: 12px 16px;
    font-size: 16px;
    border: 2px solid var(--tg-input-border);
    border-radius: 8px;
    background: var(--tg-input-bg);
    color: var(--tg-input-text);
    transition: border-color 0.2s, box-shadow 0.2s;
}
.form-group input:focus {
    outline: none;
    border-color: var(--tg-send-bg);
    box-shadow: 0 0 0 3px rgba(67,160,71,0.15);
}
.form-group input::placeholder { color: var(--tg-text-secondary); }

.error-message {
    background: var(--tg-error-bg);
    color: var(--tg-error-text);
    padding: 12px;
    border-radius: 8px;
    font-size: 14px;
    margin-bottom: 14px;
    border: 1px solid var(--tg-error-border);
}

.btn {
    width: 100%;
    padding: 14px 20px;
    font-size: 16px;
    font-weight: 600;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    min-height: 48px;
}
.btn:disabled { opacity: 0.6; cursor: not-allowed; }
.btn-primary { background: var(--tg-send-bg); color: #fff; margin-bottom: 10px; }
.btn-primary:hover:not(:disabled) { background: var(--tg-send-hover); }
.btn-secondary {
    background: transparent;
    color: var(--tg-text-secondary);
    border: 2px solid var(--tg-border);
}
.btn-secondary:hover:not(:disabled) { background: var(--tg-hover); border-color: var(--tg-text-secondary); }
.btn-secondary.active { background: var(--tg-emergency-bg); border-color: var(--tg-warning); color: var(--tg-emergency-text); }

.login-footer { text-align: center; margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--tg-border); }
.forgot-link { color: var(--tg-link-in); text-decoration: none; font-size: 14px; }
.forgot-link:hover { text-decoration: underline; }
.emergency-warning {
    background: var(--tg-emergency-bg);
    border: 1px solid var(--tg-warning);
    border-radius: 12px;
    padding: 16px;
    margin-top: 14px;
    text-align: center;
    font-size: 14px;
    color: var(--tg-emergency-text);
}
.emergency-warning p { margin-bottom: 4px; }
.emergency-warning p:last-child { margin-bottom: 0; }

/* Тема-кнопка на странице логина */
.theme-toggle-corner {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--tg-card-bg);
    border: 1px solid var(--tg-border);
    border-radius: 50%;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    font-size: 18px;
    box-shadow: var(--tg-shadow);
    transition: background 0.2s;
    z-index: 100;
}
.theme-toggle-corner:hover { background: var(--tg-hover); }

/* ============================================
   Админ-логин
   ============================================ */
.admin-login-page { background: var(--tg-page-bg); }
[data-theme="dark"] .admin-login-page { background: #0a1018; }
.admin-card { border-top: 4px solid var(--tg-admin-accent); }
.admin-badge {
    display: inline-block;
    background: linear-gradient(135deg, #f59e0b, #d97706);
    color: #fff;
    padding: 5px 14px;
    border-radius: 20px;
    font-size: 13px;
    font-weight: 600;
    margin-bottom: 14px;
}
.btn-admin { background: linear-gradient(135deg, #f59e0b, #d97706); color: #fff; margin-bottom: 10px; }
.btn-admin:hover:not(:disabled) { background: linear-gradient(135deg, #d97706, #b45309); }
.back-link { color: var(--tg-text-secondary); text-decoration: none; font-size: 14px; }
.back-link:hover { color: var(--tg-link-in); }

/* ============================================
   Страница чата — Telegram style
   ============================================ */
.chat-page {
    height: 100vh;
    height: calc(var(--vh, 1vh) * 100);
    height: 100dvh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    padding-top: env(safe-area-inset-top, 0);
}

.chat-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
    background: var(--tg-chat-bg);
    box-shadow: var(--tg-shadow);
}

/* --- Шапка чата --- */
.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 10px 16px;
    padding-top: max(10px, env(safe-area-inset-top));
    background: var(--tg-header-bg);
    color: var(--tg-header-text);
    flex-shrink: 0;
    z-index: 100;
    min-height: 52px;
}

.header-left h1 { font-size: 17px; font-weight: 600; margin-bottom: 1px; }
.user-login { font-size: 13px; opacity: 0.8; }

.header-right { display: flex; align-items: center; gap: 6px; }
.user-balance {
    font-size: 13px;
    font-weight: 500;
    background: rgba(255,255,255,0.18);
    padding: 3px 10px;
    border-radius: 14px;
}

.btn-logout, .btn-back {
    color: var(--tg-header-text);
    text-decoration: none;
    font-size: 13px;
    padding: 5px 10px;
    border-radius: 6px;
    transition: background 0.2s;
    opacity: 0.85;
}
.btn-back { background: rgba(255,255,255,0.12); }
.btn-logout:hover, .btn-back:hover { background: rgba(255,255,255,0.2); opacity: 1; }

.btn-sound, .btn-clear, .btn-theme {
    background: transparent;
    border: none;
    font-size: 17px;
    cursor: pointer;
    padding: 5px 8px;
    border-radius: 6px;
    transition: background 0.2s;
    color: var(--tg-header-text);
    line-height: 1;
}
.btn-sound:hover, .btn-clear:hover, .btn-theme:hover { background: rgba(255,255,255,0.2); }

/* Кнопка оператора «Оповестить по СМС» — заметная, но не кричащая */
.btn-notify-sms {
    background: rgba(255,255,255,0.22);
    border: 1px solid rgba(255,255,255,0.35);
    color: var(--tg-header-text);
    font-size: 13px;
    font-weight: 500;
    white-space: nowrap;
    cursor: pointer;
    padding: 6px 12px;
    border-radius: 16px;
    transition: background 0.2s;
}
.btn-notify-sms:hover:not(:disabled) { background: rgba(255,255,255,0.35); }
.btn-notify-sms:disabled { opacity: 0.5; cursor: not-allowed; }

.emergency-banner {
    background: var(--tg-emergency-bg);
    color: var(--tg-emergency-text);
    padding: 8px 16px;
    text-align: center;
    font-size: 13px;
    font-weight: 500;
    flex-shrink: 0;
}

/* --- Область сообщений --- */
.messages-container {
    flex: 1;
    min-height: 0;
    overflow-y: auto;
    padding: 8px 10px;
    background: var(--tg-chat-bg);
    transition: background 0.3s;
}

.messages-list {
    display: flex;
    flex-direction: column;
    gap: 3px;
    max-width: 680px;
    margin: 0 auto;
}

/* Служебная отметка по центру ленты (например, об отправке СМС) */
.message-system {
    align-self: center;
    max-width: 90%;
    margin: 6px 0;
    padding: 4px 12px;
    border-radius: 12px;
    background: var(--tg-bubble-in);
    border: 1px solid var(--tg-border);
    box-shadow: var(--tg-shadow);
    color: var(--tg-text);
    font-size: 12px;
    text-align: center;
}
.message-system-time { margin-left: 6px; color: var(--tg-meta-in); }

/* --- Пузыри сообщений --- */
.message {
    max-width: 80%;
    padding: 7px 10px 5px;
    border-radius: 12px;
    font-size: 15px;
    line-height: 1.45;
    word-wrap: break-word;
    position: relative;
    box-shadow: 0 1px 1px rgba(0,0,0,0.08);
}

.message-user {
    align-self: flex-end;
    background: var(--tg-bubble-out);
    border-radius: 12px 12px 4px 12px;
}
.message-support {
    align-self: flex-start;
    background: var(--tg-bubble-in);
    border-radius: 12px 12px 12px 4px;
}

/* Хвостики пузырей (первое сообщение в группе) */
.message-user::after {
    content: '';
    position: absolute;
    bottom: 0;
    right: -6px;
    width: 12px;
    height: 12px;
    background: var(--tg-tail-out);
    clip-path: polygon(0 0, 0 100%, 100% 100%);
}
.message-support::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: -6px;
    width: 12px;
    height: 12px;
    background: var(--tg-tail-in);
    clip-path: polygon(100% 0, 0 100%, 100% 100%);
}

/* Текст сообщения */
.message-text { padding-bottom: 2px; }

/* Мета (время, статус) */
.message-meta {
    display: flex;
    align-items: center;
    justify-content: flex-end;
    gap: 6px;
    font-size: 11px;
    margin-top: 2px;
    line-height: 1;
    float: right;
    margin-left: 10px;
    position: relative;
    bottom: -2px;
}
.message-user .message-meta { color: var(--tg-meta-out); }
.message-support .message-meta { color: var(--tg-meta-in); }

/* Статус прочтения — отдельной строкой под сообщением (только на своих) */
.message-read {
    display: block;
    clear: both;
    text-align: right;
    font-size: 10px;
    line-height: 1.3;
    margin-top: 3px;
    opacity: 0.7;
}
.message-read-done { opacity: 0.95; }
.message-user .message-read { color: var(--tg-meta-out); }
.message-support .message-read { color: var(--tg-meta-in); }

.message-sender {
    font-weight: 600;
    font-size: 12px;
}
.message-user .message-sender { display: none; }
.message-support .message-sender { color: var(--tg-link-in); display: block; float: left; clear: both; margin-bottom: 2px; }

/* Ссылки в пузырях */
.message-link { text-decoration: underline; text-underline-offset: 2px; word-break: break-all; transition: opacity 0.2s; }
.message-link:hover { opacity: 0.8; }
.message-user .message-link { color: var(--tg-link-out); }
.message-support .message-link { color: var(--tg-link-in); }

/* Кнопки ред./удал. */
.message-actions { display: inline-flex; gap: 2px; margin-left: 4px; }
.msg-action-btn {
    padding: 2px 4px;
    font-size: 11px;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    background: transparent;
    opacity: 0.45;
    transition: opacity 0.15s, background 0.15s;
    line-height: 1;
}
.msg-action-btn:hover { opacity: 1; background: rgba(0,0,0,0.08); }
[data-theme="dark"] .msg-action-btn:hover { background: rgba(255,255,255,0.1); }

/* Отредактировано */
.message-edited { font-size: 10px; font-style: italic; margin-left: 2px; }
.message-user .message-edited { color: var(--tg-meta-out); }
.message-support .message-edited { color: var(--tg-meta-in); }

/* Удалено */
.message-deleted { opacity: 0.55; }
.message-text-deleted { color: var(--tg-text-secondary); font-style: italic; }

/* Индикатор набора */
.typing-indicator {
    padding: 6px 14px;
    font-size: 13px;
    color: var(--tg-typing-dots);
    font-style: italic;
}

/* --- Ввод сообщения --- */
.message-input-container {
    padding: 8px 10px;
    padding-bottom: max(8px, env(safe-area-inset-bottom));
    background: var(--tg-card-bg);
    border-top: 1px solid var(--tg-border);
    flex-shrink: 0;
    transition: background 0.3s;
}

.message-form {
    display: flex;
    gap: 8px;
    align-items: flex-end;
    max-width: 680px;
    margin: 0 auto;
}

.message-form textarea {
    flex: 1;
    padding: 11px 16px;
    font-size: 15px;
    border: 1.5px solid var(--tg-input-border);
    border-radius: 22px;
    background: var(--tg-input-bg);
    color: var(--tg-input-text);
    transition: border-color 0.2s;
    resize: none;
    min-height: 44px;
    max-height: 150px;
    overflow-y: auto;
    line-height: 1.4;
    font-family: inherit;
}
.message-form textarea:focus { outline: none; border-color: var(--tg-send-bg); }
.message-form textarea::placeholder { color: var(--tg-text-secondary); }

.btn-send {
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    background: var(--tg-send-bg);
    color: #fff;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, transform 0.1s;
    flex-shrink: 0;
}
.btn-send:hover { background: var(--tg-send-hover); }
.btn-send:active { transform: scale(0.93); }

.btn-attach {
    width: 40px;
    height: 40px;
    border: none;
    border-radius: 50%;
    background: transparent;
    color: var(--tg-text-secondary);
    font-size: 20px;
    cursor: pointer;
    transition: background 0.2s, color 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.btn-attach:hover { background: var(--tg-hover); color: var(--tg-send-bg); }
.btn-attach:disabled { opacity: 0.4; cursor: not-allowed; }

/* --- Файлы в сообщениях --- */
.message-file { margin-bottom: 4px; }
.message-file-image img {
    max-width: 100%;
    max-height: 300px;
    border-radius: 8px;
    cursor: pointer;
    display: block;
    transition: opacity 0.2s;
}
.message-file-image img:hover { opacity: 0.9; }
.file-link {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: rgba(0,0,0,0.05);
    border-radius: 8px;
    text-decoration: none;
    color: var(--tg-text);
    transition: background 0.2s;
}
[data-theme="dark"] .file-link { background: rgba(255,255,255,0.06); }
.file-link:hover { background: rgba(0,0,0,0.1); }
[data-theme="dark"] .file-link:hover { background: rgba(255,255,255,0.1); }
.file-icon { font-size: 20px; }
.file-name { flex: 1; font-weight: 500; word-break: break-all; }
.file-size { font-size: 12px; color: var(--tg-text-secondary); white-space: nowrap; }

/* --- Пустой чат / загрузка --- */
.empty-chat { text-align: center; color: var(--tg-text-secondary); padding: 50px 20px; }
.empty-chat-icon { font-size: 48px; margin-bottom: 14px; }
.empty-chat h2 { font-size: 17px; font-weight: 600; color: var(--tg-text); margin-bottom: 6px; }
.empty-chat p { font-size: 14px; }

.loading-chat { text-align: center; color: var(--tg-text-secondary); padding: 60px 20px; }
.loading-chat .loading-spinner { font-size: 32px; margin-bottom: 12px; animation: tg-pulse 1s ease-in-out infinite; }
.loading-chat p { font-size: 14px; }
@keyframes tg-pulse { 0%,100%{opacity:1} 50%{opacity:0.4} }

/* ============================================
   Админ-панель
   ============================================ */
.admin-page {
    height: 100vh;
    height: 100dvh;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    background: var(--tg-page-bg);
}
.admin-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
    background: var(--tg-page-bg);
}

.admin-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 20px;
    background: var(--tg-admin-header);
    color: #fff;
    flex-shrink: 0;
}
.admin-header h1 { font-size: 17px; font-weight: 600; margin-bottom: 3px; }
.operator-badge {
    font-size: 12px;
    opacity: 0.75;
    background: rgba(245,158,11,0.3);
    padding: 2px 10px;
    border-radius: 12px;
}
.admin-header .header-right { display: flex; align-items: center; gap: 10px; }
.admin-header .btn-logout { color: #fff; opacity: 0.8; }
.admin-header .btn-theme {
    background: rgba(255,255,255,0.1);
    border: none;
    font-size: 16px;
    cursor: pointer;
    padding: 6px 10px;
    border-radius: 8px;
    transition: background 0.2s;
    color: #fff;
}
.admin-header .btn-theme:hover { background: rgba(255,255,255,0.2); }

.btn-refresh {
    background: rgba(255,255,255,0.1);
    border: none;
    font-size: 15px;
    cursor: pointer;
    padding: 7px 11px;
    border-radius: 8px;
    transition: background 0.2s;
    color: #fff;
}
.btn-refresh:hover { background: rgba(255,255,255,0.2); }

/* --- Статистика --- */
.admin-stats {
    display: flex;
    gap: 10px;
    padding: 14px 18px;
    background: var(--tg-card-bg);
    border-bottom: 1px solid var(--tg-border);
    flex-shrink: 0;
    transition: background 0.3s;
}
.stat-item {
    flex: 1;
    text-align: center;
    padding: 10px 6px;
    background: var(--tg-page-bg);
    border-radius: 10px;
    transition: background 0.3s;
}
.stat-value { display: block; font-size: 22px; font-weight: 700; color: var(--tg-text); }
.stat-label { font-size: 11px; color: var(--tg-text-secondary); }
.stat-unread .stat-value { color: var(--tg-danger); }
.stat-ai .stat-value { font-size: 15px; }
.stat-ai.ai-online .stat-value { color: var(--tg-success); }
.stat-ai.ai-offline .stat-value { color: var(--tg-text-secondary); }

/* --- AI панель --- */
.ai-info-panel {
    background: var(--tg-card-bg);
    border-bottom: 1px solid var(--tg-border);
    transition: background 0.3s;
    flex-shrink: 0;
}
.ai-info-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 18px;
    cursor: pointer;
    font-size: 14px;
    font-weight: 500;
    color: var(--tg-text);
    transition: background 0.2s;
}
.ai-info-header:hover { background: var(--tg-hover); }
.ai-info-toggle { font-size: 12px; color: var(--tg-text-secondary); transition: transform 0.2s; }
.ai-info-toggle.open { transform: rotate(180deg); }
.ai-info-content { padding: 0 18px 14px; }
.ai-info-content textarea {
    width: 100%;
    padding: 10px 12px;
    font-size: 14px;
    font-family: 'Consolas','Monaco',monospace;
    border: 1.5px solid var(--tg-input-border);
    border-radius: 8px;
    background: var(--tg-input-bg);
    color: var(--tg-input-text);
    resize: vertical;
    min-height: 72px;
    transition: border-color 0.2s;
}
.ai-info-content textarea:focus { outline: none; border-color: var(--tg-send-bg); }
.ai-info-content textarea::placeholder { color: var(--tg-text-secondary); opacity: 0.7; }
.ai-info-actions { display: flex; align-items: center; gap: 10px; margin-top: 8px; }
.btn-save-info {
    padding: 7px 14px;
    font-size: 13px;
    font-weight: 500;
    background: var(--tg-send-bg);
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    transition: background 0.2s;
}
.btn-save-info:hover { background: var(--tg-send-hover); }
.btn-save-info:disabled { opacity: 0.5; cursor: not-allowed; }
.save-status { font-size: 13px; color: var(--tg-success); }
.save-status.error { color: var(--tg-danger); }
.ai-info-hint { margin-top: 8px; font-size: 12px; color: var(--tg-text-secondary); line-height: 1.5; }
.ai-info-hint code { background: var(--tg-hover); padding: 2px 5px; border-radius: 4px; font-family: 'Consolas','Monaco',monospace; }

/* --- Табы --- */
.admin-main-tabs {
    display: flex;
    padding: 0 18px;
    background: var(--tg-card-bg);
    border-bottom: 2px solid var(--tg-border);
    transition: background 0.3s;
    flex-shrink: 0;
}
.main-tab-btn {
    flex: 1;
    padding: 12px 16px;
    background: transparent;
    border: none;
    font-size: 14px;
    font-weight: 600;
    color: var(--tg-text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
}
.main-tab-btn:hover { color: var(--tg-link-in); background: var(--tg-hover); }
.main-tab-btn.active { color: var(--tg-link-in); border-bottom-color: var(--tg-link-in); }

.admin-filters {
    background: var(--tg-card-bg);
    border-bottom: 1px solid var(--tg-border);
    transition: background 0.3s;
    flex-shrink: 0;
}

.chat-tabs { display: flex; padding: 10px 18px 0; }
.tab-btn {
    flex: 1;
    padding: 10px 14px;
    font-size: 13px;
    font-weight: 500;
    border: none;
    background: var(--tg-page-bg);
    color: var(--tg-text-secondary);
    cursor: pointer;
    transition: all 0.2s;
    border-radius: 8px 8px 0 0;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 6px;
}
.tab-btn:hover { background: var(--tg-border); }
.tab-btn.active { background: var(--tg-card-bg); color: var(--tg-link-in); box-shadow: 0 -2px 0 var(--tg-link-in) inset; }

.tab-count {
    background: var(--tg-page-bg);
    color: var(--tg-text-secondary);
    padding: 1px 7px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 600;
}
.tab-btn.active .tab-count { background: var(--tg-link-in); color: #fff; }
.main-tab-btn .tab-count { background: var(--tg-text-secondary); color: #fff; font-size: 11px; padding: 1px 7px; border-radius: 10px; margin-left: 4px; }
.main-tab-btn.active .tab-count { background: var(--tg-link-in); }

.admin-search { padding: 10px 18px; }
.admin-search input {
    width: 100%;
    padding: 10px 14px;
    font-size: 14px;
    border: 1.5px solid var(--tg-input-border);
    border-radius: 10px;
    background: var(--tg-input-bg);
    color: var(--tg-input-text);
    transition: border-color 0.2s;
}
.admin-search input:focus { outline: none; border-color: var(--tg-link-in); }
.admin-search input::placeholder { color: var(--tg-text-secondary); }

/* --- Секции чатов и пользователей --- */
#chatsSection, #usersSection {
    flex: 1;
    display: flex;
    flex-direction: column;
    min-height: 0;
    overflow: hidden;
}

/* --- Список чатов --- */
.chats-container { flex: 1; overflow-y: auto; padding: 10px; min-height: 0; }
.chats-list { display: flex; flex-direction: column; gap: 6px; }

.chat-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 14px;
    background: var(--tg-card-bg);
    border-radius: 10px;
    transition: transform 0.12s, box-shadow 0.12s, background 0.3s;
    border: 1px solid var(--tg-border);
}
.chat-card-link {
    display: flex;
    align-items: center;
    gap: 12px;
    flex: 1;
    text-decoration: none;
    color: inherit;
    min-width: 0;
}
.chat-card:hover { transform: translateY(-1px); box-shadow: 0 3px 10px rgba(0,0,0,0.1); }
[data-theme="dark"] .chat-card:hover { box-shadow: 0 3px 10px rgba(0,0,0,0.3); }
.chat-card.chat-unread { border-left: 4px solid var(--tg-danger); }
[data-theme="dark"] .chat-card.chat-unread { background: rgba(229,57,53,0.08); }
:root .chat-card.chat-unread { background: #fef2f2; }

.chat-avatar {
    width: 46px;
    height: 46px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--tg-header-bg), #1d4ed8);
    color: #fff;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 19px;
    font-weight: 600;
    flex-shrink: 0;
}
.chat-info { flex: 1; min-width: 0; }
.chat-header-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 3px; }
.chat-login { font-weight: 600; font-size: 14px; color: var(--tg-text); }
.chat-time { font-size: 12px; color: var(--tg-text-secondary); flex-shrink: 0; }
.chat-preview { font-size: 13px; color: var(--tg-text-secondary); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; margin-bottom: 4px; }
.chat-meta { display: flex; align-items: center; gap: 8px; }
.chat-messages-count { font-size: 12px; color: var(--tg-text-secondary); }
.chat-unread-badge { background: var(--tg-badge-bg); color: var(--tg-badge-text); font-size: 11px; font-weight: 600; padding: 2px 7px; border-radius: 10px; }

.chat-actions { display: flex; flex-direction: column; gap: 4px; align-items: center; }
.btn-complete { padding: 5px 9px; font-size: 12px; border: none; border-radius: 6px; cursor: pointer; transition: all 0.2s; white-space: nowrap; }
.btn-complete-done { background: var(--tg-success); color: #fff; }
.btn-complete-done:hover { filter: brightness(0.9); }
.btn-complete-restore { background: var(--tg-warning); color: #fff; }
.btn-complete-restore:hover { filter: brightness(0.9); }

.chat-card.chat-completed { opacity: 0.6; }
.chat-card.chat-completed:hover { opacity: 1; }
.completed-badge { background: var(--tg-success); color: #fff; font-size: 10px; padding: 1px 6px; border-radius: 4px; margin-left: 6px; }

/* Метки авторизации */
.auth-badge { font-size: 10px; padding: 1px 6px; border-radius: 4px; margin-left: 4px; font-weight: 500; }
.auth-normal { background: rgba(34, 197, 94, 0.15); color: #22c55e; }
.auth-emergency { background: rgba(239, 68, 68, 0.15); color: #ef4444; }
.chat-card.chat-emergency { border-left: 3px solid #ef4444; }
.chat-avatar.avatar-emergency { background: linear-gradient(135deg, #ef4444, #dc2626); }

/* --- Пользователи --- */
.users-container { padding: 0 18px 18px; overflow-y: auto; flex: 1; min-height: 0; }
.users-list { display: flex; flex-direction: column; gap: 10px; }
.user-card {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 14px;
    background: var(--tg-card-bg);
    border-radius: 10px;
    border: 1px solid var(--tg-border);
    transition: all 0.2s;
}
.user-card:hover { transform: translateY(-1px); box-shadow: 0 3px 10px rgba(0,0,0,0.08); }
.user-avatar {
    width: 46px; height: 46px; border-radius: 50%;
    background: linear-gradient(135deg, #6366f1, #8b5cf6);
    color: #fff; display: flex; align-items: center; justify-content: center;
    font-weight: 600; font-size: 17px; flex-shrink: 0;
}
.user-info { flex: 1; min-width: 0; }
.user-header-row { display: flex; justify-content: space-between; align-items: center; margin-bottom: 4px; }
.user-login { font-weight: 600; font-size: 14px; color: var(--tg-text); }
.user-time { font-size: 12px; color: var(--tg-text-secondary); }
.user-meta { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.user-messages { font-size: 13px; color: var(--tg-text-secondary); }
.user-mode { font-size: 12px; padding: 2px 9px; border-radius: 10px; font-weight: 500; }
.user-mode.mode-ai { background: #dbeafe; color: #1d4ed8; }
.user-mode.mode-operator { background: #fef3c7; color: #d97706; }
[data-theme="dark"] .user-mode.mode-ai { background: rgba(59,130,246,0.15); color: #6ab2f2; }
[data-theme="dark"] .user-mode.mode-operator { background: rgba(251,191,36,0.15); color: #fbbf24; }

.user-actions { display: flex; gap: 6px; flex-shrink: 0; }
.btn-mode {
    padding: 7px 12px; border: none; border-radius: 8px;
    font-size: 13px; font-weight: 500; cursor: pointer; transition: all 0.2s;
}
.btn-mode.mode-ai { background: #fef3c7; color: #d97706; }
.btn-mode.mode-ai:hover { background: #fde68a; }
.btn-mode.mode-operator { background: #dbeafe; color: #1d4ed8; }
.btn-mode.mode-operator:hover { background: #bfdbfe; }
[data-theme="dark"] .btn-mode.mode-ai { background: rgba(251,191,36,0.12); color: #fbbf24; }
[data-theme="dark"] .btn-mode.mode-operator { background: rgba(59,130,246,0.12); color: #6ab2f2; }
.btn-delete-user {
    padding: 7px 10px; background: #fee2e2; color: var(--tg-danger);
    border: none; border-radius: 8px; font-size: 14px; cursor: pointer; transition: all 0.2s;
}
.btn-delete-user:hover { background: #fecaca; }
[data-theme="dark"] .btn-delete-user { background: rgba(229,57,53,0.12); }

/* --- Пустые/ошибка --- */
.empty-state, .error-state { text-align: center; padding: 50px 20px; color: var(--tg-text-secondary); }
.empty-icon, .error-icon { font-size: 56px; margin-bottom: 14px; }
.empty-state h3, .error-state h3 { font-size: 17px; color: var(--tg-text); margin-bottom: 6px; }
.btn-retry {
    margin-top: 14px; padding: 9px 22px;
    background: var(--tg-send-bg); color: #fff; border: none; border-radius: 8px;
    font-size: 14px; cursor: pointer; transition: background 0.2s;
}
.btn-retry:hover { background: var(--tg-send-hover); }

.loading-spinner { text-align: center; padding: 50px 20px; color: var(--tg-text-secondary); }
.spinner {
    width: 36px; height: 36px;
    border: 3px solid var(--tg-border);
    border-top-color: var(--tg-link-in);
    border-radius: 50%;
    margin: 0 auto 14px;
    animation: tg-spin 0.8s linear infinite;
}
@keyframes tg-spin { to { transform: rotate(360deg); } }

/* ============================================
   Скроллбар
   ============================================ */
.messages-container::-webkit-scrollbar, .chats-container::-webkit-scrollbar, .users-container::-webkit-scrollbar { width: 5px; }
.messages-container::-webkit-scrollbar-track, .chats-container::-webkit-scrollbar-track { background: transparent; }
.messages-container::-webkit-scrollbar-thumb, .chats-container::-webkit-scrollbar-thumb { background: var(--tg-border); border-radius: 3px; }
.messages-container::-webkit-scrollbar-thumb:hover, .chats-container::-webkit-scrollbar-thumb:hover { background: var(--tg-text-secondary); }

.hidden { display: none !important; }

/* ============================================
   Мобильная адаптация
   ============================================ */
@media (max-width: 600px) {
    .login-page { padding: 16px; align-items: flex-start; padding-top: 50px; }
    .login-card { padding: 24px 18px; }
    .login-header h1 { font-size: 22px; }

    .chat-container { max-width: 100%; border-radius: 0; box-shadow: none; }
    .chat-header { padding: 8px 12px; min-height: 48px; }
    .header-left h1 { font-size: 15px; }
    .user-login { font-size: 11px; }
    .user-balance { font-size: 12px; padding: 2px 8px; }
    .btn-logout, .btn-back { font-size: 12px; padding: 4px 8px; }
    /* На телефоне подпись не влезает — шапка уезжала за край экрана
       вместе с кнопками справа. Оставляем один значок. */
    .btn-notify-sms { font-size: 0; padding: 5px 8px; }
    .btn-notify-sms::before { content: '📲'; font-size: 16px; }

    .messages-container { padding: 6px 6px; }
    .message { max-width: 88%; padding: 6px 9px 4px; font-size: 15px; }
    .message-input-container { padding: 6px 8px; }
    .message-form textarea { padding: 10px 14px; font-size: 16px; min-height: 40px; }
    .btn-send { width: 40px; height: 40px; font-size: 16px; }
    .btn-attach { width: 36px; height: 36px; font-size: 18px; }
    .emergency-banner { padding: 6px 12px; font-size: 12px; }
    .message-file-image img { max-height: 200px; }

    .admin-header { padding: 10px 14px; }
    .admin-header h1 { font-size: 15px; }
    .admin-stats { padding: 10px 14px; gap: 6px; }
    .stat-item { padding: 8px 4px; }
    .stat-value { font-size: 18px; }
    .stat-label { font-size: 10px; }
    .admin-search { padding: 8px 14px; }
    .chats-container { padding: 6px; }
    .chat-card { padding: 10px; gap: 10px; }
    .chat-avatar { width: 40px; height: 40px; font-size: 17px; }
    .chat-login { font-size: 13px; }
    .chat-preview { font-size: 12px; }

    .admin-main-tabs { padding: 0 14px; }
    .main-tab-btn { padding: 10px 8px; font-size: 13px; }
    .users-container { padding: 6px; }
    .user-card { flex-wrap: wrap; padding: 10px; gap: 8px; }
    .user-avatar { width: 38px; height: 38px; font-size: 15px; }
    .user-info { flex: 1; min-width: calc(100% - 56px); }
    .user-actions {
        width: 100%; justify-content: flex-end; margin-top: 6px;
        padding-top: 8px; border-top: 1px solid var(--tg-border);
    }
    .btn-mode { flex: 1; text-align: center; }
    .theme-toggle-corner { top: 10px; right: 10px; width: 36px; height: 36px; font-size: 16px; }
}

@media (max-width: 360px) {
    .login-card { padding: 18px 14px; }
    .chat-header { padding: 6px 10px; flex-wrap: wrap; gap: 6px; }
    .header-left { flex: 1; min-width: 0; }
    .header-left h1 { font-size: 14px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
    .user-login { font-size: 10px; }
    .header-right { gap: 4px; flex-shrink: 0; }
    .user-balance { display: none; }
    .btn-sound, .btn-clear, .btn-theme { font-size: 15px; padding: 4px 5px; }
    .btn-logout, .btn-back { font-size: 11px; padding: 3px 6px; }
    .btn-notify-sms { padding: 4px 7px; }
    .btn-notify-sms::before { font-size: 15px; }
    .message-form { gap: 4px; }
    .btn-attach { width: 32px; height: 32px; font-size: 16px; }
    .btn-send { width: 36px; height: 36px; font-size: 15px; }
    .message-form textarea { padding: 9px 12px; font-size: 14px; min-height: 36px; }
}