:root {
    --bg: #f5f6f8;
    --panel: #ffffff;
    --border: #e0e2e7;
    --text: #1f2430;
    --muted: #6b7280;
    --accent: #2f6fed;
    --accent-dark: #1f4fb0;
    --ok: #1d9a5b;
    --warn: #b8860b;
    --err: #c0392b;
    --danger-bg: #fdecea;
}

* { box-sizing: border-box; }

body {
    margin: 0;
    font-family: -apple-system, Segoe UI, Roboto, Helvetica, Arial, sans-serif;
    background: var(--bg);
    color: var(--text);
    font-size: 14px;
}

.topbar {
    display: flex;
    align-items: center;
    gap: 24px;
    padding: 12px 24px;
    background: var(--panel);
    border-bottom: 1px solid var(--border);
}

.brand { font-weight: 700; font-size: 18px; color: var(--accent-dark); }

.topbar nav a {
    margin-right: 16px;
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
}
.topbar nav a:hover { color: var(--accent); }

.user-menu { margin-left: auto; display: flex; align-items: center; gap: 10px; }
.user-menu button { padding: 4px 10px; font-size: 13px; }

.content { padding: 20px 24px; max-width: 1100px; margin: 0 auto; }

h1 { font-size: 22px; margin: 0 0 16px; }
h2 { font-size: 17px; margin: 24px 0 10px; }

.panel {
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 16px;
    margin-bottom: 16px;
}

table { width: 100%; border-collapse: collapse; font-size: 13px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--border); }
th { color: var(--muted); font-weight: 600; text-transform: uppercase; font-size: 11px; letter-spacing: .03em; }
tr:hover td { background: #fafbfc; }

a.device-link { color: var(--accent); text-decoration: none; font-weight: 600; }
a.device-link:hover { text-decoration: underline; }

.badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: 10px;
    font-size: 11px;
    font-weight: 700;
}
.badge-online { background: #e3f7ec; color: var(--ok); }
.badge-offline { background: var(--danger-bg); color: var(--err); }
.badge-running { background: #e8f0fe; color: var(--accent-dark); }
.badge-success { background: #e3f7ec; color: var(--ok); }
.badge-failed { background: var(--danger-bg); color: var(--err); }
.badge-warning { background: rgba(255, 170, 0, .18); color: #9a6200; }
.badge-cancelled { background: #fdf3e3; color: var(--warn); }
.badge-idle { background: #eef0f3; color: var(--muted); }
.badge-unknown { background: #eef0f3; color: var(--muted); }

/* WEB UX FINAL SPEC (Phase 7) - tab bar cho History (Sessions/Tasks/Group Posting/Proxy
   Lifecycle/Campaign Slots) - chỉ 1 panel active hiển thị tại 1 thời điểm, mỗi tab lazy-load. */
.tab-bar { display: flex; gap: 4px; border-bottom: 1px solid var(--border); margin-bottom: 16px; flex-wrap: wrap; }
.tab-btn {
    background: none; border: none; border-bottom: 2px solid transparent;
    padding: 8px 14px; font-size: 13px; font-weight: 600; color: var(--muted);
    cursor: pointer; border-radius: 0;
}
.tab-btn:hover { color: var(--accent-dark); }
.tab-btn.active { color: var(--accent-dark); border-bottom-color: var(--accent); }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

/* WEB UX FINAL SPEC (mục 2.7) - "full cell coloring" cho UID Status, KHÔNG chỉ đổi màu chữ. */
td.uid-cell-live { background: #d7f4e0; color: #0f5c33; font-weight: 700; }
td.uid-cell-die { background: #fbd8d8; color: #7a1f1f; font-weight: 700; }

/* WEB UX FINAL SPEC (Phase 3.2/9.1) - reusable multi-select row (site.js createRowMultiSelect). */
tr[data-select-row] { cursor: pointer; }
tr[data-select-row]:focus { outline: 2px solid var(--accent); outline-offset: -2px; }
tr[data-select-row].row-selected td { background: #e8f0fe; }
tr[data-select-row].row-selected:hover td { background: #dde9fd; }
.preview-box { background: #f0f4ff; border: 1px solid #c7d6fb; border-radius: 8px; padding: 12px 16px; margin: 12px 0; font-size: 13px; }

.filter-bar { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; margin-bottom: 12px; }
/* FINAL VISUAL FIX (mục 1E) - search placeholder dài (vd "Search Friendly Name / Device ID /
   Facebook UID...") bị cắt ở 260px cũ - min-width đủ rộng để đọc hết placeholder, vẫn co giãn/wrap
   được trên màn hẹp nhờ flex-basis + flex-wrap của .filter-bar. */
.filter-bar input[type=text] { flex: 1 1 320px; min-width: 220px; max-width: 420px; }

/* FINAL VISUAL FIX (mục 1B) - toolbar bulk-selection dùng chung cho Dashboard/Box member table. */
.selection-toolbar {
    display: flex; gap: 8px; align-items: center; flex-wrap: wrap;
    padding: 8px 0; margin-bottom: 8px; border-bottom: 1px solid var(--border);
}
.selection-toolbar .muted { font-size: 12px; }
.filter-chip {
    padding: 5px 12px; border-radius: 14px; border: 1px solid var(--border); background: #fff;
    color: var(--text); font-size: 12px; font-weight: 600; cursor: pointer;
}
.filter-chip.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.table-scroll { overflow-x: auto; }

/* FINAL POLISH (mục 1.2) - Dashboard/Devices "Box"/"Campaign"/"Friendly Name" có thể rất dài (tên
   Box-07-Ban-Hai-Fb-Cu... thật tế) - ellipsis + title tooltip thay vì kéo dãn cả cột/xuống dòng vô
   lý. KHÔNG áp dụng cho toàn bộ bảng (History/Users/... vẫn giữ nguyên hành vi cũ đã PASS). */
.cell-truncate { max-width: 160px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.section-hint { color: var(--muted); font-size: 12px; margin: -8px 0 12px; }

button, .btn {
    display: inline-block;
    padding: 7px 14px;
    border-radius: 6px;
    border: 1px solid var(--accent);
    background: var(--accent);
    color: #fff;
    font-weight: 600;
    cursor: pointer;
    font-size: 13px;
}
button:hover, .btn:hover { background: var(--accent-dark); }
button:disabled { opacity: .5; cursor: not-allowed; }
button.secondary { background: #fff; color: var(--accent); }
button.danger { background: var(--err); border-color: var(--err); }
button.danger:hover { background: #a5301f; }

input[type=text], input[type=number], textarea, select {
    padding: 7px 10px;
    border: 1px solid var(--border);
    border-radius: 6px;
    font-size: 13px;
    width: 100%;
    font-family: inherit;
}
label { font-weight: 600; font-size: 12px; color: var(--muted); display: block; margin-bottom: 4px; }
.field { margin-bottom: 12px; }
.row { display: flex; gap: 16px; flex-wrap: wrap; }
.row > .field { flex: 1; min-width: 160px; }

.checkbox-list { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 12px; }
.checkbox-list label { display: flex; align-items: center; gap: 6px; font-weight: 500; color: var(--text); font-size: 13px; }
.checkbox-list input { width: auto; }

.muted { color: var(--muted); }
.error-box { background: var(--danger-bg); color: var(--err); padding: 10px 12px; border-radius: 6px; margin-bottom: 12px; display: none; }
.notice-box { background: #fdf3e3; color: var(--warn); padding: 10px 12px; border-radius: 6px; margin-bottom: 12px; }

.stat-grid { display: flex; gap: 16px; flex-wrap: wrap; }
.stat { background: #fafbfc; border: 1px solid var(--border); border-radius: 8px; padding: 12px 16px; min-width: 140px; }
.stat .label { font-size: 11px; color: var(--muted); text-transform: uppercase; letter-spacing: .03em; }
.stat .value { font-size: 20px; font-weight: 700; margin-top: 4px; }

code { background: #f0f1f4; padding: 2px 6px; border-radius: 4px; font-size: 12px; }

/* WEB UX FINAL SPEC - compact "Actions ▾" dropdown dùng chung (site.js toggleActionsMenu) - tránh
   nhiều nút hành động overlap trong 1 cell hẹp, đặc biệt ở viewport hẹp hơn desktop thường. */
.actions-cell { white-space: nowrap; }
.actions-toggle { padding: 5px 10px; font-size: 12px; background: #fff; color: var(--text); border-color: var(--border); }
.actions-toggle:hover { background: #fafbfc; border-color: var(--accent); }
.actions-menu-popup {
    position: fixed;
    min-width: 160px;
    background: var(--panel);
    border: 1px solid var(--border);
    border-radius: 8px;
    box-shadow: 0 6px 20px rgba(0,0,0,.15);
    padding: 6px;
    z-index: 1000;
    display: flex;
    flex-direction: column;
    gap: 2px;
}
.actions-menu-popup button.actions-menu-item {
    display: block;
    width: 100%;
    text-align: left;
    background: none;
    border: none;
    color: var(--text);
    font-weight: 500;
    padding: 7px 10px;
    border-radius: 5px;
}
.actions-menu-popup button.actions-menu-item:hover { background: #eef2ff; color: var(--accent-dark); }
.actions-menu-popup button.actions-menu-item.danger { color: var(--err); }
.actions-menu-popup button.actions-menu-item.danger:hover { background: var(--danger-bg); }
.actions-menu-popup button.actions-menu-item:disabled { opacity: .5; cursor: not-allowed; background: none; }
.actions-menu-popup a.actions-menu-item {
    display: block;
    padding: 7px 10px;
    border-radius: 5px;
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
}
.actions-menu-popup a.actions-menu-item:hover { background: #eef2ff; color: var(--accent-dark); }
.actions-menu-popup .actions-menu-divider { height: 1px; background: var(--border); margin: 4px 2px; }

/* DEFAULT DEVICE MAPPING (2026-08-24): inline save status cho ô Group Name ở bảng Campaign target. */
.group-save-status { margin-left: 6px; font-size: 12px; }
.group-save-ok { color: var(--ok); }
.group-save-err { color: var(--err); }