:root {
        --bg: #0B0E12; --card: #11161C; --panel: #11161C;
        --input: #171D24; --hover: #1A2129; --btn: #171D24;
        --border: #1E242C; --border2: #1A2027;
        --text: #E6E8EC; --muted: #8A94A0; --muted2: #6B7480;
        --accent: #2EA043; --danger: #E5534B; --blue: #4493F8;
        --btn-hover: #1D242D;
    }
    body.light-theme {
        --bg: #f6f8fa; --card: #ffffff; --panel: #ffffff;
        --input: #ffffff; --hover: #f0f3f6; --btn: #eaeef2;
        --border: #d0d7de; --border2: #d8dee4;
        --text: #1f2328; --muted: #57606a; --muted2: #6e7781;
        --accent: #1a7f37; --danger: #cf222e; --blue: #0969da;
        --btn-hover: #d0d7de;
    }
    * { margin: 0; padding: 0; box-sizing: border-box; }
    body {
        font-family: 'Segoe UI', Arial, sans-serif;
        background: var(--bg);
        color: var(--text);
        min-height: 100vh;
    }
    .app-layout { display: flex; min-height: 100vh; }
    .sidebar {
        width: 220px; flex-shrink: 0; background: var(--card);
        border-right: 1px solid var(--border);
        padding: 16px 12px; display: flex; flex-direction: column; gap: 4px;
    }
    .sidebar-logo {
        font-size: 18px; font-weight: 700; color: var(--accent);
        padding: 6px 10px 18px; letter-spacing: 0.3px;
    }
    .menu-item {
        display: block; width: 100%; text-align: left;
        background: transparent; border: none; border-left: 3px solid transparent;
        color: var(--muted); padding: 10px 12px; border-radius: 8px;
        font-size: 14px; cursor: pointer; transition: background .15s, color .15s;
    }
    .menu-item:hover { background: var(--hover); color: var(--text); }
    .menu-item.active { background: var(--hover); color: var(--text); border-left-color: var(--accent); }
    .app-content { flex: 1; min-width: 0; display: flex; flex-direction: column; }
    .toast-container {
        position: fixed; bottom: 16px; right: 16px; z-index: 10000;
        display: flex; flex-direction: column; gap: 8px; max-width: 360px;
    }
    .toast {
        background: var(--card); border: 1px solid var(--border);
        border-left: 4px solid var(--blue);
        border-radius: 10px; padding: 12px 14px; font-size: 13px; color: var(--text);
        box-shadow: 0 6px 20px rgba(0,0,0,.35); cursor: pointer;
        animation: toastIn .25s ease; display: flex; gap: 8px; align-items: flex-start;
    }
    .toast.success { border-left-color: var(--accent); }
    .toast.error { border-left-color: var(--danger); }
    .toast.chat { border-left-color: var(--blue); }
    @keyframes toastIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
    .sidebar-footer { margin-top: auto; padding-top: 16px; }
    .sidebar-footer .menu-item { color: var(--danger); }
    @media (max-width: 768px) {
        .app-layout { flex-direction: column; }
        .sidebar { width: 100%; flex-direction: row; align-items: center; gap: 8px; border-right: none; border-bottom: 1px solid var(--border); padding: 8px 12px; }
        .sidebar-logo { padding: 0 8px 0 0; font-size: 16px; }
        .menu-item { flex: 1; text-align: center; padding: 8px 6px; border-left: none; border-bottom: 2px solid transparent; border-radius: 6px; font-size: 13px; }
        .menu-item.active { border-left: none; border-bottom-color: var(--accent); }
    }
    .header {
        background: var(--card);
        padding: 16px 24px;
        display: flex;
        align-items: center;
        justify-content: space-between;
        border-bottom: 1px solid var(--border);
    }
    .header h1 { font-size: 20px; color: #2ea043; }
    .header .user { font-size: 13px; color: var(--muted); }
    .btn-download {
        background: var(--btn); color: var(--text); border: 1px solid var(--border);
        padding: 7px 14px; border-radius: 6px; font-size: 13px; cursor: pointer;
        text-decoration: none; display: inline-flex; align-items: center; gap: 6px;
        white-space: nowrap;
    }
    \.btn-download:hover { background: var(--btn); border-color: var(--muted); }
    .btn.active { border-color: var(--accent); color: var(--accent); }
    .container {
        display: flex;
        gap: 20px;
        width: 100%;
        margin: 20px 0;
        padding: 0 20px;
        align-items: stretch;
    }
    .card {
        background: var(--card);
        border: 1px solid var(--border);
        border-radius: 10px;
        padding: 20px;
        display: flex;
        flex-direction: column;
    }
    .card h2 { font-size: 15px; margin-bottom: 12px; color: var(--text); }
    .groups-col { width: 220px; flex-shrink: 0; }
    .computers-col { flex: 1; min-width: 300px; }
    .history-col { width: 280px; flex-shrink: 0; }
    .staff-col { width: 300px; flex-shrink: 0; }

    /* ===== Адаптивность: планшет/мобильный ===== */
    @media (max-width: 1024px) {
        .container { flex-direction: column; align-items: stretch; }
        .groups-col, .history-col, .computers-col { width: 100%; min-width: 0; flex-shrink: 1; }
        .groups-col { order: 2; }
        .computers-col { order: 1; }
        .history-col { order: 3; }
    }
    @media (max-width: 768px) {
        .app-layout { display: flex; min-height: 100vh; }
    .sidebar {
        width: 220px; flex-shrink: 0; background: var(--card);
        border-right: 1px solid var(--border);
        padding: 16px 12px; display: flex; flex-direction: column; gap: 4px;
    }
    .sidebar-logo {
        font-size: 18px; font-weight: 700; color: var(--accent);
        padding: 6px 10px 18px; letter-spacing: 0.3px;
    }
    .menu-item {
        display: block; width: 100%; text-align: left;
        background: transparent; border: none; border-left: 3px solid transparent;
        color: var(--muted); padding: 10px 12px; border-radius: 8px;
        font-size: 14px; cursor: pointer; transition: background .15s, color .15s;
    }
    .menu-item:hover { background: var(--hover); color: var(--text); }
    .menu-item.active { background: var(--hover); color: var(--text); border-left-color: var(--accent); }
    .app-content { flex: 1; min-width: 0; display: flex; flex-direction: column; }
    .toast-container {
        position: fixed; bottom: 16px; right: 16px; z-index: 10000;
        display: flex; flex-direction: column; gap: 8px; max-width: 360px;
    }
    .toast {
        background: var(--card); border: 1px solid var(--border);
        border-left: 4px solid var(--blue);
        border-radius: 10px; padding: 12px 14px; font-size: 13px; color: var(--text);
        box-shadow: 0 6px 20px rgba(0,0,0,.35); cursor: pointer;
        animation: toastIn .25s ease; display: flex; gap: 8px; align-items: flex-start;
    }
    .toast.success { border-left-color: var(--accent); }
    .toast.error { border-left-color: var(--danger); }
    .toast.chat { border-left-color: var(--blue); }
    @keyframes toastIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
    .sidebar-footer { margin-top: auto; padding-top: 16px; }
    .sidebar-footer .menu-item { color: var(--danger); }
    @media (max-width: 768px) {
        .app-layout { flex-direction: column; }
        .sidebar { width: 100%; flex-direction: row; align-items: center; gap: 8px; border-right: none; border-bottom: 1px solid var(--border); padding: 8px 12px; }
        .sidebar-logo { padding: 0 8px 0 0; font-size: 16px; }
        .menu-item { flex: 1; text-align: center; padding: 8px 6px; border-left: none; border-bottom: 2px solid transparent; border-radius: 6px; font-size: 13px; }
        .menu-item.active { border-left: none; border-bottom-color: var(--accent); }
    }
    .header { flex-direction: column; align-items: flex-start; gap: 8px; padding: 12px 14px; }
        .header h1 { font-size: 17px; }
        .header > div { flex-wrap: wrap; gap: 6px; }
        .btn-download, .btn { padding: 6px 10px; font-size: 12px; }
        .container { margin: 10px 0; padding: 0 10px; gap: 10px; }
        .card { padding: 12px; }
        .scroll { max-height: none; }
        /* Строка фильтров компьютеров: перенос (только верхняя строка) */
        .computers-col > div:first-of-type .btn,
        .computers-col > div:first-of-type select,
        .computers-col > div:first-of-type input {
            width: 100% !important; margin-left: 0 !important; flex: 1 1 100%;
        }
        .computers-col > div:first-of-type { flex-wrap: wrap; }
        .history-col { max-height: 40vh; }
        /* Строка компьютера: как на ПК, компактно */
        .host-row { padding: 8px 10px; grid-template-columns: 26px 1fr auto; }
        .host-table-head { display: none; }
        .host-row .col-tech, .host-row .col-client, .host-row .col-status, .host-row .col-disk, .host-row .col-group, .host-row .col-pin, .host-row .col-ver { display: none; }
        .staff-table-head { display: none; }
        .staff-row { grid-template-columns: 1.5fr auto; }
        .staff-row .col-phone, .staff-row .col-status { display: none; }
        .host-info { gap: 6px; flex: 1; min-width: 0; }
        .host-info > div:last-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
        .host-name { font-size: 13px; }
        .host-row .btn { padding: 5px 8px; font-size: 12px; flex-shrink: 0; }
        .host-row .btn:not(.secondary):not(.danger) { min-width: 96px; }
    }

    .staff-row {
        padding: 10px 12px;
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: 8px;
        margin-bottom: 8px;
    }
    .staff-name { font-size: 14px; font-weight: 600; }
    .staff-email { font-size: 12px; color: var(--muted); margin-top: 2px; }
    .staff-phone { font-size: 12px; color: var(--muted); margin-top: 2px; }
    .staff-actions { display: flex; gap: 6px; margin-top: 8px; }
    .staff-actions .btn { padding: 4px 10px; font-size: 12px; }
    .staff-badge {
        display: inline-block;
        font-size: 11px;
        padding: 2px 8px;
        border-radius: 10px;
        margin-top: 4px;
    }
    .staff-badge.master { background: #1f6feb33; color: var(--blue); }
    .staff-badge.active { background: #2ea04333; color: var(--accent); }
    .staff-badge.blocked { background: #f8514933; color: var(--danger); }
    .group-item {
        padding: 10px 12px;
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: 8px;
        margin-bottom: 8px;
        cursor: pointer;
        display: flex;
        align-items: center;
        justify-content: space-between;
        font-size: 14px;
    }
    .group-item:hover { background: var(--hover); }
    .group-item.active { border-color: var(--accent); background: var(--hover); }
    .group-item .del { color: var(--danger); cursor: pointer; font-size: 14px; padding: 0 4px; }
    .group-item .del:hover { color: #ff6b6b; }
    .host-table-head, .host-row {
        display: grid;
        grid-template-columns: 26px 1.6fr 1.4fr 1.1fr 0.9fr 0.7fr 0.65fr 0.75fr 0.8fr auto;
        align-items: center;
        gap: 12px;
        padding: 10px 14px;
    }
    .host-table-head {
        font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px;
        color: var(--muted2); padding: 4px 14px 8px;
        border-bottom: 1px solid var(--border2);
    }
    .staff-table-head, .staff-row {
        display: grid;
        grid-template-columns: 2fr 2fr 1.5fr 1.2fr auto;
        align-items: center;
        gap: 12px;
        padding: 10px 14px;
    }
    .staff-table-head {
        font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px;
        color: var(--muted2); padding: 4px 14px 8px;
        border-bottom: 1px solid var(--border2);
    }
    .grp-table-head, .grp-row {
        display: grid;
        grid-template-columns: 2.5fr 1fr auto;
        align-items: center;
        gap: 12px;
        padding: 10px 14px;
    }
    .grp-table-head {
        font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px;
        color: var(--muted2); padding: 4px 14px 8px;
        border-bottom: 1px solid var(--border2);
    }
    .role-table-head, .role-row {
        display: grid;
        grid-template-columns: 2fr 1.3fr 3fr auto;
        align-items: center;
        gap: 12px;
        padding: 10px 14px;
    }
    .role-table-head {
        font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px;
        color: var(--muted2); padding: 4px 14px 8px;
        border-bottom: 1px solid var(--border2);
    }
    .hist-table-head, .hist-row {
        display: grid;
        grid-template-columns: 2.5fr 2fr 1.8fr;
        align-items: center;
        gap: 12px;
        padding: 10px 14px;
    }
    .hist-table-head {
        font-size: 11px; text-transform: uppercase; letter-spacing: 0.5px;
        color: var(--muted2); padding: 4px 14px 8px;
        border-bottom: 1px solid var(--border2);
    }
    .host-row {
        display: grid;
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: 8px;
        margin-bottom: 8px;
    }
    .host-info { display: flex; align-items: center; gap: 10px; flex: 1; }
    .host-name { font-size: 14px; font-weight: 600; }
    .status-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
    .status-dot.online { background: #2ea043; }
    .status-dot.offline { background: #f85149; }
    .host-status { font-size: 12px; color: var(--muted); }
    .btn {
        padding: 8px 16px;
        background: var(--btn);
        border: 1px solid var(--border);
        border-radius: 8px;
        color: var(--text);
        font-size: 13px;
        cursor: pointer;
        transition: background .15s, border-color .15s;
    }
    .btn:hover { background: var(--btn-hover); border-color: var(--muted2); }
    .btn.primary {
        background: var(--accent);
        border-color: transparent;
        color: #fff;
    }
    .btn.primary:hover { background: #3fb950; }
    .btn:disabled { background: var(--border); cursor: not-allowed; color: var(--muted2); }
    .btn.secondary { background: var(--btn); color: var(--text); border-color: var(--border); }
    .btn.secondary:hover { background: var(--btn-hover); }
    .btn.danger { background: var(--danger); border-color: transparent; color: #fff; }
    .btn.danger:hover { background: #f26b62; }
    .empty { color: var(--muted); text-align: center; padding: 20px; font-size: 13px; }
    .history-row {
        padding: 8px 10px;
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: 8px;
        margin-bottom: 8px;
    }
    .history-name { font-size: 13px; font-weight: 600; }
    .history-time { font-size: 11px; color: var(--muted); margin-top: 2px; }
    .login-box {
        max-width: 360px;
        margin: 80px auto;
        background: var(--card);
        padding: 30px;
        border-radius: 8px;
        border: 1px solid var(--border);
    }
    .login-box h2 { margin-bottom: 20px; color: #2ea043; }
    .login-box input {
        width: 100%;
        padding: 10px;
        margin-bottom: 12px;
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: 8px;
        color: var(--text);
        font-size: 14px;
    }
    .login-box button { width: 100%; }
    .error { color: var(--danger); font-size: 13px; margin-top: 8px; }
    .modal-overlay {
        display: none;
        position: fixed;
        top: 0; left: 0; right: 0; bottom: 0;
        background: rgba(0,0,0,0.6);
        z-index: 1000;
        align-items: center;
        justify-content: center;
    }
    .modal-overlay.show { display: flex; }
    .modal {
        background: var(--card);
        border: 1px solid var(--border);
        border-radius: 8px;
        padding: 24px;
        width: 380px;
        max-width: 90vw;
    }
    .modal h3 { margin-bottom: 16px; color: #2ea043; }
    .modal label { display: block; font-size: 13px; color: var(--muted); margin-bottom: 4px; }
    .modal input, .modal select {
        width: 100%;
        padding: 10px;
        margin-bottom: 12px;
        background: var(--bg);
        border: 1px solid var(--border);
        border-radius: 8px;
        color: var(--text);
        font-size: 14px;
    }
    .modal-btns { display: flex; gap: 8px; justify-content: flex-end; margin-top: 8px; }
    .scroll { overflow-y: auto; flex: 1; }