:root {
  --bg: #f3f5f9; --surface: #ffffff; --ink: #172033; --muted: #5d6b82; --line: #dfe4ee; --line-strong: #c5cddc;
  --blue: #1b57b8; --blue-deep: #123f8c; --blue-soft: #e8f0fd;
  --danger: #c42f26; --danger-soft: #fdeceb;
  --warn: #a35f00; --warn-soft: #fff1d6;
  --ok: #1d7a49; --ok-soft: #e4f4ea;
  --info: #56657e; --info-soft: #eceff5;
  --radius: 6px;
  --font: "Segoe UI", Roboto, "Helvetica Neue", Arial, "Noto Sans", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0e1524; --surface: #162033; --ink: #e8edf7; --muted: #9aa7bd; --line: #27324a; --line-strong: #37445f;
    --blue: #6ea2ff; --blue-deep: #0b2a66; --blue-soft: #1b2b4d;
    --danger: #ff7f75; --danger-soft: #3b1d21;
    --warn: #f0b04a; --warn-soft: #3a2c12;
    --ok: #62d195; --ok-soft: #13301f;
    --info: #9fb0cc; --info-soft: #1f2a40;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.5 var(--font); }
h1, h2, h3, p { margin: 0; }
button, input, select, textarea { font: inherit; color: inherit; }
button { cursor: pointer; }
a { color: var(--blue); }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 2px; }
.muted { color: var(--muted); }
.num { font-variant-numeric: tabular-nums; }
[hidden] { display: none !important; }

/* Khung trang */
.top { background: var(--blue-deep); color: #fff; display: flex; flex-wrap: wrap; gap: 12px 24px; align-items: center; justify-content: space-between; padding: 14px 24px; }
.top h1 { font-size: 20px; font-weight: 650; letter-spacing: .1px; }
.top p { font-size: 13px; opacity: .8; }
.top-right { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.user { display: flex; align-items: center; gap: 10px; font-size: 14px; }
.live { display: flex; align-items: center; gap: 8px; font-size: 13px; }
.live i { width: 9px; height: 9px; border-radius: 50%; background: #5be19b; box-shadow: 0 0 0 0 rgba(91,225,155,.6); }
.live.ok i { animation: pulse 2.4s ease-out infinite; }
.live.stale i { background: #ffc857; }
.live.off i { background: #ff7f75; }
@keyframes pulse { 0% { box-shadow: 0 0 0 0 rgba(91,225,155,.55); } 80%, 100% { box-shadow: 0 0 0 9px rgba(91,225,155,0); } }
@media (prefers-reduced-motion: reduce) { .live.ok i { animation: none; } * { scroll-behavior: auto !important; transition: none !important; } }

.tabs { display: flex; gap: 2px; padding: 0 24px; background: var(--surface); border-bottom: 1px solid var(--line); overflow-x: auto; position: sticky; top: 0; z-index: 5; }
.tabs a { padding: 12px 14px; color: var(--muted); text-decoration: none; border-bottom: 3px solid transparent; white-space: nowrap; font-weight: 550; }
.tabs a:hover { color: var(--ink); }
.tabs a[aria-current="page"] { color: var(--blue); border-bottom-color: var(--blue); }
.tabs .count { display: inline-block; min-width: 20px; padding: 0 6px; margin-left: 6px; border-radius: 10px; background: var(--danger); color: #fff; font-size: 12px; text-align: center; }
.tabs .count.warn { background: var(--warn); color: #fff; }

.banner { margin: 16px 24px 0; padding: 10px 14px; border-left: 4px solid var(--blue); background: var(--blue-soft); border-radius: 0 var(--radius) var(--radius) 0; }
.notice { margin: 16px 24px 0; padding: 10px 14px; border-left: 4px solid var(--warn); background: var(--warn-soft); border-radius: 0 var(--radius) var(--radius) 0; }
main { padding: 20px 24px 48px; max-width: 1480px; margin: 0 auto; }
main:focus { outline: none; }
.page-head { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: baseline; gap: 8px 16px; margin-bottom: 14px; }
.page-head h2 { font-size: 19px; font-weight: 650; }
.panel { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 18px; }
.panel + .panel, .panel + .grid, .grid + .panel, .grid + .grid { margin-top: 16px; }
.panel h3 { font-size: 15px; font-weight: 650; margin-bottom: 10px; }
.panel h3 small { font-weight: 400; color: var(--muted); margin-left: 8px; }
.grid { display: grid; gap: 16px; }
.grid > .panel, .grid > form, .grid > section { margin-top: 0; }
.g-2-1 { grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); }
.g-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
@media (max-width: 1000px) { .g-2-1, .g-3 { grid-template-columns: minmax(0, 1fr); } }
@media (max-width: 640px) { .top, main { padding-left: 14px; padding-right: 14px; } .tabs { padding: 0 8px; } .banner, .notice { margin-left: 14px; margin-right: 14px; } }

/* Chỉ số tổng hợp: một dải liền, không chia thẻ rời */
.kpis { display: grid; grid-template-columns: repeat(7, minmax(0, 1fr)); border: 1px solid var(--line); border-radius: var(--radius); background: var(--surface); overflow: hidden; margin-bottom: 16px; }
.kpi { padding: 12px 16px; border-left: 1px solid var(--line); min-width: 0; }
.kpi:first-child { border-left: 0; }
.kpi b { display: block; font-size: 26px; line-height: 1.15; font-weight: 650; font-variant-numeric: tabular-nums; }
.kpi span { font-size: 13px; color: var(--muted); }
.kpi.danger b { color: var(--danger); } .kpi.warn b { color: var(--warn); } .kpi.ok b { color: var(--ok); }
@media (max-width: 1000px) { .kpis { grid-template-columns: repeat(4, minmax(0, 1fr)); } .kpi:nth-child(5) { border-left: 0; } .kpi:nth-child(n+5) { border-top: 1px solid var(--line); } }
@media (max-width: 560px) { .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); } .kpi:nth-child(odd) { border-left: 0; } .kpi:nth-child(n+3) { border-top: 1px solid var(--line); } }

/* Danh sách cảnh báo */
.alert-list { list-style: none; margin: 0; padding: 0; }
.alert-item { display: grid; grid-template-columns: 4px minmax(0, 1fr) auto; gap: 0 12px; padding: 9px 0; border-top: 1px solid var(--line); align-items: start; cursor: pointer; }
.alert-item:first-child { border-top: 0; }
.alert-item:hover { background: var(--bg); }
.alert-item .bar-sev { align-self: stretch; border-radius: 2px; background: var(--info); }
.alert-item.danger .bar-sev { background: var(--danger); } .alert-item.warn .bar-sev { background: var(--warn); }
.alert-item .t { font-weight: 600; overflow-wrap: anywhere; }
.alert-item .s { font-size: 13px; color: var(--muted); }
.alert-item .r { text-align: right; font-size: 13px; white-space: nowrap; }
.empty { padding: 18px 4px; color: var(--muted); }

/* Nhãn */
.tag { display: inline-block; padding: 1px 8px; border-radius: 10px; font-size: 12px; font-weight: 600; background: var(--info-soft); color: var(--info); white-space: nowrap; }
.tag.danger { background: var(--danger-soft); color: var(--danger); } .tag.warn { background: var(--warn-soft); color: var(--warn); }
.tag.ok { background: var(--ok-soft); color: var(--ok); } .tag.blue { background: var(--blue-soft); color: var(--blue); }

/* Dải thời hạn */
.strip-wrap { overflow-x: auto; padding-bottom: 4px; }
.strip { display: grid; grid-template-columns: repeat(29, minmax(22px, 1fr)); min-width: 700px; align-items: end; }
.sday { display: flex; flex-direction: column; justify-content: flex-end; align-items: center; height: 148px; border-left: 1px solid transparent; position: relative; padding-bottom: 22px; }
.sday.we { background: repeating-linear-gradient(135deg, transparent 0 5px, var(--info-soft) 5px 6px); }
.sday.today { border-left-color: var(--blue); border-right: 1px solid var(--blue); background: var(--blue-soft); }
.sday .lbl { position: absolute; bottom: 2px; font-size: 11px; color: var(--muted); white-space: nowrap; }
.sday.today .lbl { color: var(--blue); font-weight: 700; }
.dots { display: flex; flex-direction: column-reverse; gap: 3px; align-items: center; }
.dot { width: 14px; height: 14px; border-radius: 50%; border: 0; padding: 0; background: var(--blue); }
.dot.danger { background: var(--danger); } .dot.warn { background: var(--warn); } .dot.done { background: var(--ok); opacity: .55; }
.dot:hover { transform: scale(1.3); }
.dots .more { font-size: 11px; color: var(--muted); }
.legend { display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: 13px; color: var(--muted); margin-top: 8px; }
.legend i { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 6px; vertical-align: -1px; }

/* Biểu đồ */
.axis-row { display: grid; grid-template-columns: 64px minmax(0, 1fr) 70px; gap: 10px; align-items: center; padding: 5px 0; font-size: 14px; }
.stack { display: flex; height: 14px; background: var(--info-soft); border-radius: 3px; overflow: hidden; }
.stack i { display: block; height: 100%; }
.c-done { background: var(--ok); } .c-doing { background: var(--blue); } .c-unconfirmed { background: #8a9ab6; } .c-todo { background: #c4cde0; } .c-other { background: #d9a441; }
.donut-wrap { display: flex; align-items: center; gap: 18px; flex-wrap: wrap; }
.donut { width: 132px; height: 132px; flex: none; }
.donut text { fill: var(--ink); font-weight: 650; }
.key { list-style: none; margin: 0; padding: 0; font-size: 14px; }
.key li { display: flex; align-items: center; gap: 8px; padding: 2px 0; }
.key i { width: 10px; height: 10px; border-radius: 2px; flex: none; }
.key b { margin-left: auto; padding-left: 14px; font-variant-numeric: tabular-nums; }
.changes { list-style: none; margin: 0; padding: 0; font-size: 14px; }
.changes li { padding: 6px 0; border-top: 1px solid var(--line); cursor: pointer; }
.changes li:first-child { border-top: 0; }
.changes time { color: var(--muted); font-size: 12px; margin-right: 6px; }

/* Bảng */
.filters { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; align-items: end; }
.filters label { display: flex; flex-direction: column; gap: 2px; font-size: 12px; color: var(--muted); }
.filters input, .filters select, .form input, .form select, .form textarea { padding: 7px 9px; border: 1px solid var(--line-strong); border-radius: var(--radius); background: var(--surface); min-width: 0; }
.filters input[type=search] { width: 220px; }
.table-wrap { overflow-x: auto; background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); }
table { width: 100%; border-collapse: collapse; font-size: 14px; }
th, td { padding: 9px 12px; text-align: left; vertical-align: top; border-top: 1px solid var(--line); }
thead th { border-top: 0; background: var(--bg); font-weight: 600; font-size: 13px; color: var(--muted); white-space: nowrap; position: sticky; top: 0; }
thead th button { background: none; border: 0; padding: 0; font-weight: 600; color: inherit; }
thead th button:hover { color: var(--ink); }
tbody tr[data-open], tbody tr[data-person] { cursor: pointer; }
tbody tr[data-open]:hover, tbody tr[data-person]:hover { background: var(--blue-soft); }
td.c-title { min-width: 280px; max-width: 520px; }
td.c-title .clamp { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
td .sub { font-size: 12px; color: var(--muted); }
.sevdot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; margin-right: 6px; background: var(--line-strong); }
.sevdot.danger { background: var(--danger); } .sevdot.warn { background: var(--warn); } .sevdot.info { background: var(--info); }
.pbar { display: flex; align-items: center; gap: 8px; min-width: 96px; }
.pbar .bar { flex: 1; height: 6px; background: var(--info-soft); border-radius: 3px; overflow: hidden; }
.pbar .bar i { display: block; height: 100%; background: var(--blue); }
.pbar.done .bar i { background: var(--ok); }
.load { display: flex; align-items: center; gap: 8px; }
.load .bar { width: 90px; height: 8px; background: var(--info-soft); border-radius: 4px; overflow: hidden; }
.load .bar i { display: block; height: 100%; background: var(--blue); }
.result-count { font-size: 13px; color: var(--muted); margin-bottom: 8px; }
.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 14px; }
.chip { padding: 5px 12px; border: 1px solid var(--line-strong); border-radius: 16px; background: var(--surface); font-size: 13px; }
.chip[aria-pressed="true"] { background: var(--blue); border-color: var(--blue); color: #fff; }

/* Nút, biểu mẫu */
.btn { padding: 7px 14px; border-radius: var(--radius); border: 1px solid var(--line-strong); background: var(--surface); font-weight: 550; }
.btn.primary { background: var(--blue); border-color: var(--blue); color: #fff; }
.btn.ghost { background: transparent; border-color: rgba(255,255,255,.45); color: #fff; padding: 4px 10px; font-size: 13px; }
.btn:disabled { opacity: .6; cursor: default; }
.form { display: grid; gap: 14px; max-width: 760px; }
.form fieldset { border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px 14px; display: grid; gap: 12px; }
.form legend { padding: 0 6px; font-weight: 650; }
.form label { display: flex; flex-direction: column; gap: 3px; font-size: 14px; }
.form label small { color: var(--muted); font-size: 12px; }
.form .row { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 12px; }
.form label.check { flex-direction: row; align-items: center; gap: 8px; }
.form textarea { min-height: 70px; resize: vertical; }
.msg { font-size: 14px; }
.msg.ok { color: var(--ok); } .msg.err { color: var(--danger); }
dl.kv { display: grid; grid-template-columns: 150px minmax(0, 1fr); gap: 6px 14px; margin: 0; font-size: 14px; }
dl.kv dt { color: var(--muted); } dl.kv dd { margin: 0; overflow-wrap: anywhere; }
.quality { margin: 0; padding-left: 18px; font-size: 14px; }

/* Ngăn chi tiết */
.scrim { position: fixed; inset: 0; background: rgba(10, 18, 34, .45); z-index: 20; }
.drawer { position: fixed; top: 0; right: 0; bottom: 0; width: min(560px, 100%); background: var(--surface); z-index: 21; box-shadow: -8px 0 28px rgba(10,18,34,.25); overflow-y: auto; padding: 18px 22px 40px; }
.drawer header { display: flex; justify-content: space-between; align-items: start; gap: 12px; margin-bottom: 10px; }
.drawer h2 { font-size: 17px; font-weight: 650; overflow-wrap: anywhere; }
.drawer .x { border: 0; background: var(--bg); width: 32px; height: 32px; border-radius: 50%; font-size: 18px; line-height: 1; flex: none; }
.drawer .tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 14px; }
.drawer h3 { font-size: 14px; margin: 18px 0 6px; }
.note { white-space: pre-line; background: var(--bg); border-radius: var(--radius); padding: 10px 12px; font-size: 14px; }

.toast { position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%); z-index: 30; display: grid; gap: 8px; width: min(520px, calc(100% - 28px)); pointer-events: none; }
.toast div { background: var(--ink); color: var(--surface); padding: 10px 14px; border-radius: var(--radius); box-shadow: 0 6px 20px rgba(0,0,0,.25); font-size: 14px; }

/* Đăng nhập */
.login-page { display: grid; place-items: center; min-height: 100vh; padding: 20px; }
.login-box { width: min(380px, 100%); background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 28px 26px; display: grid; gap: 16px; }
.login-box h1 { font-size: 20px; }
.login-box form { display: grid; gap: 12px; }
.login-box label { display: grid; gap: 4px; font-size: 14px; }
.login-box input { padding: 9px 10px; border: 1px solid var(--line-strong); border-radius: var(--radius); background: var(--surface); }