:root {
  --bg: #EDEFF2; --surface: #FFFFFF; --surface-2: #F4F6F8; --line: #D3D8DF; --line-soft: #E6E9EE;
  --ink: #15181D; --ink-2: #3D454F; --muted: #69727E;
  --accent: #25567F; --accent-ink: #FFFFFF; --accent-soft: #DCE6F0;
  --good: #1F6B4F; --good-soft: #DCEFE6; --bad: #A33A2B; --bad-soft: #F7E1DD; --warn: #8A5A12; --warn-soft: #F6ECD8;
  --shadow: 0 1px 2px rgba(20,28,40,.06), 0 10px 30px -18px rgba(20,28,40,.35);
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #101317; --surface: #181C22; --surface-2: #1F242B; --line: #2E353E; --line-soft: #252B33;
    --ink: #E7EBF0; --ink-2: #C2C9D2; --muted: #8E98A4;
    --accent: #8CB9E8; --accent-ink: #0E1822; --accent-soft: #1E2A38;
    --good: #79D1A6; --good-soft: #15291F; --bad: #F08A7A; --bad-soft: #321B18; --warn: #E1A257; --warn-soft: #2E2519;
    --shadow: 0 1px 2px rgba(0,0,0,.4), 0 12px 30px -18px rgba(0,0,0,.8);
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--ink); font: 15px/1.55 var(--sans); -webkit-font-smoothing: antialiased; }
[hidden] { display: none !important; }
h1, h2, h3 { margin: 0; text-wrap: balance; letter-spacing: -.01em; }
h1 { font-size: clamp(24px, 4vw, 32px); line-height: 1.15; font-weight: 700; }
h2 { font-size: 16px; font-weight: 650; }
h3.sub { font-size: 13px; font-weight: 600; color: var(--muted); margin: 18px 0 8px; }
p { margin: 0; }
code { font: 12.5px var(--mono); background: var(--surface-2); padding: 1px 5px; border-radius: 4px; }
.muted { color: var(--muted); }
.small { font-size: 12.5px; }
.mono { font-family: var(--mono); font-size: 12.5px; }
.num { font-variant-numeric: tabular-nums; }
.eyebrow { font: 500 11.5px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--muted); margin-bottom: 6px; }
.sr-only { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

/* thanh trên */
.topbar { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px 20px; border-bottom: 1px solid var(--line); background: var(--surface); flex-wrap: wrap; }
.brand { display: flex; align-items: center; gap: 10px; font: 600 14px var(--mono); min-width: 0; }
.brand-host { color: var(--muted); font-weight: 400; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.brand-mark { width: 18px; height: 13px; border-radius: 3px; background: var(--accent); position: relative; flex: none; }
.brand-mark::after { content: ""; position: absolute; left: 4px; top: 4.5px; width: 4px; height: 4px; border-radius: 50%; background: #79D1A6; }
.topbar-right { display: flex; gap: 8px; flex-wrap: wrap; }
.pill { font: 500 12.5px var(--mono); padding: 4px 10px; border-radius: 999px; white-space: nowrap; }
.pill::before { content: "●"; margin-right: 6px; }
.pill-ok { color: var(--good); background: var(--good-soft); }
.pill-bad { color: var(--bad); background: var(--bad-soft); }
.pill-warn { color: var(--warn); background: var(--warn-soft); }
.pill-wait { color: var(--muted); background: var(--surface-2); }

/* tab */
.tabs-bar { background: var(--surface); border-bottom: 1px solid var(--line); position: sticky; top: env(safe-area-inset-top, 0px); z-index: 5; }
.tabs-inner { max-width: 1180px; margin: 0 auto; padding-inline: 8px; display: flex; gap: 2px; overflow-x: auto; scrollbar-width: none; }
.tabs-inner button { font: inherit; font-size: 14px; font-weight: 550; border: 0; background: transparent; color: var(--muted); padding: 12px 12px 10px; border-bottom: 2px solid transparent; cursor: pointer; white-space: nowrap; }
.tabs-inner button:hover { color: var(--ink); }
.tabs-inner button[aria-selected="true"] { color: var(--ink); border-bottom-color: var(--accent); }

.wrap { max-width: 1180px; margin: 0 auto; padding-inline: 20px; padding-block: 24px 64px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 16px 18px; box-shadow: var(--shadow); margin: 0; min-width: 0; }
.card-head { display: flex; justify-content: space-between; align-items: baseline; gap: 10px; margin-bottom: 12px; }
.section-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 12px 16px; flex-wrap: wrap; margin-bottom: 12px; }
.gap-top { margin-top: 18px; }
.narrow { max-width: 520px; }
.stack { display: flex; flex-direction: column; gap: 18px; min-width: 0; }
.notice { background: var(--warn-soft); color: var(--warn); border-radius: 8px; padding: 10px 14px; font-size: 14px; margin-bottom: 18px; }

/* đăng nhập */
.auth { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 380px); gap: 40px; align-items: center; min-height: 70vh; }
.auth-intro { display: flex; flex-direction: column; gap: 12px; max-width: 48ch; }
@media (max-width: 760px) { .auth { grid-template-columns: 1fr; gap: 24px; min-height: 0; } }
.form { display: flex; flex-direction: column; gap: 6px; }
.form label { font-weight: 550; font-size: 13.5px; margin-top: 8px; }
.form label:first-child { margin-top: 0; }
input[type="email"], input[type="password"], input[type="search"], input[type="text"] {
  font: inherit; color: var(--ink); background: var(--surface); border: 1px solid var(--line); border-radius: 7px; padding: 8px 11px; width: 100%;
}
input:focus { outline: none; border-color: var(--accent); box-shadow: 0 0 0 3px var(--accent-soft); }
.form-error { min-height: 20px; color: var(--bad); font-size: 13.5px; margin-top: 6px; }

/* nút */
.btn { font: inherit; font-size: 13.5px; font-weight: 550; padding: 6px 12px; border-radius: 7px; border: 1px solid var(--line); background: var(--surface); color: var(--ink); cursor: pointer; white-space: nowrap; }
.btn:hover:not(:disabled) { border-color: var(--accent); color: var(--accent); }
.btn-primary { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); padding: 8px 14px; }
.btn-primary:hover:not(:disabled) { filter: brightness(1.08); color: var(--accent-ink); }
.btn-quiet { border-color: transparent; background: transparent; color: var(--muted); }
.btn-sm { padding: 4px 9px; font-size: 12.5px; }
.btn-danger { color: var(--bad); }
.btn-danger:hover:not(:disabled) { border-color: var(--bad); color: var(--bad); }
.btn.confirm { background: var(--bad); border-color: var(--bad); color: #fff; }
.btn:disabled { opacity: .45; cursor: not-allowed; }
.btn.busy { cursor: progress; opacity: .6; }
.actions { display: flex; gap: 6px; justify-content: flex-end; flex-wrap: wrap; }
.actions-row { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 16px; }
.controls { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.controls input { width: 200px; }
.seg { display: inline-flex; padding: 3px; background: var(--surface-2); border-radius: 8px; gap: 2px; }
.seg button { font: inherit; font-size: 13px; font-weight: 550; border: 0; border-radius: 6px; padding: 5px 12px; background: transparent; color: var(--muted); cursor: pointer; }
.seg button[aria-pressed="true"] { background: var(--surface); color: var(--ink); box-shadow: 0 1px 2px rgba(0,0,0,.08); }

/* ô chỉ số */
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-bottom: 18px; }
.tile { background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; box-shadow: var(--shadow); min-width: 0; }
.tile-label { font-size: 12.5px; color: var(--muted); }
.tile-value { font: 600 24px/1.2 var(--sans); font-variant-numeric: tabular-nums; margin-top: 4px; letter-spacing: -.01em; }
.tile-value small { font-size: 14px; font-weight: 500; color: var(--muted); }
.tile-sub { font-size: 12.5px; color: var(--muted); margin-top: 2px; overflow-wrap: anywhere; }
.bar { height: 5px; border-radius: 3px; background: var(--surface-2); overflow: hidden; margin-top: 8px; }
.bar > span { display: block; height: 100%; background: var(--accent); border-radius: 3px; }
.bar.hot > span { background: var(--warn); }

/* biểu đồ */
.charts { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; margin-bottom: 18px; }
@media (max-width: 960px) { .charts { grid-template-columns: 1fr; } }
.chart { position: relative; }
.chart svg { display: block; width: 100%; height: 120px; overflow: visible; }
.chart .grid-line { stroke: var(--line-soft); stroke-width: 1; }
.chart-axis { display: flex; justify-content: space-between; gap: 8px; font: 11px var(--mono); color: var(--muted); margin-top: 6px; }
.chart-dot { position: absolute; width: 10px; height: 10px; border-radius: 50%; background: var(--accent); border: 2px solid var(--surface); transform: translate(-50%, -50%); pointer-events: none; }
.chart .area { fill: var(--accent); opacity: .12; }
.chart .line { fill: none; stroke: var(--accent); stroke-width: 2; stroke-linejoin: round; stroke-linecap: round; }
.chart .cross { stroke: var(--muted); stroke-width: 1; stroke-dasharray: 3 3; }
.chart .empty-msg { fill: var(--muted); font: 12px var(--sans); }
.tooltip { position: fixed; z-index: 20; pointer-events: none; background: var(--ink); color: var(--bg); font: 12px/1.4 var(--mono); padding: 5px 8px; border-radius: 6px; white-space: nowrap; box-shadow: var(--shadow); }

.grid-2 { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; align-items: start; }
@media (max-width: 860px) { .grid-2 { grid-template-columns: 1fr; } }

/* danh sách khoá–giá trị */
.kv { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 7px 14px; margin: 0; font-size: 13.5px; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; font-family: var(--mono); font-size: 12.5px; text-align: right; overflow-wrap: anywhere; font-variant-numeric: tabular-nums; }

.disk + .disk { margin-top: 14px; }
.disk-head { display: flex; justify-content: space-between; gap: 10px; font-size: 13.5px; }
.disk-head span:last-child { font-family: var(--mono); font-size: 12.5px; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.disk-note { font-size: 12.5px; color: var(--muted); margin-top: 4px; }

/* bảng */
.table-card { padding: 0; overflow: hidden; }
.table-wrap { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.table th { text-align: left; font-weight: 550; font-size: 12px; color: var(--muted); padding: 10px 14px; border-bottom: 1px solid var(--line); white-space: nowrap; background: var(--surface-2); }
.table td { padding: 10px 14px; border-top: 1px solid var(--line-soft); vertical-align: middle; }
.table tr:first-child td { border-top: 0; }
.table td.r, .table th.r { text-align: right; }
.table td.num { font-family: var(--mono); font-size: 12.5px; white-space: nowrap; }
.table .name { font-weight: 600; }
.table .sub-line { display: block; font: 11.5px var(--mono); color: var(--muted); max-width: 42ch; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.table .empty-row td { color: var(--muted); text-align: center; padding: 22px; }
.table tr.selected td { background: var(--accent-soft); }

.status { display: inline-flex; align-items: center; gap: 6px; font-size: 13px; white-space: nowrap; }
.status::before { content: ""; width: 8px; height: 8px; border-radius: 50%; background: var(--muted); flex: none; }
.status.ok { color: var(--good); } .status.ok::before { background: var(--good); }
.status.bad { color: var(--bad); } .status.bad::before { background: var(--bad); }
.status.warn { color: var(--warn); } .status.warn::before { background: var(--warn); }
.status.off { color: var(--muted); }
.tag { font: 11px var(--mono); color: var(--muted); border: 1px solid var(--line); border-radius: 4px; padding: 0 5px; margin-left: 6px; white-space: nowrap; }

/* log */
.log-card { margin-top: 18px; }
.log-tabs { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.log { margin: 0; max-height: 460px; overflow: auto; background: #0F1216; color: #D5DBE2; font: 12px/1.5 var(--mono); padding: 12px 14px; border-radius: 8px; white-space: pre-wrap; overflow-wrap: anywhere; }
.log:empty::before { content: "(trống)"; color: #7C8691; }

.list { list-style: none; margin: 0; padding: 0; font-size: 13.5px; }
.list li { display: flex; justify-content: space-between; gap: 12px; padding: 7px 0; border-top: 1px solid var(--line-soft); align-items: baseline; }
.list li:first-child { border-top: 0; }
.list li > span:last-child { font-family: var(--mono); font-size: 12.5px; color: var(--ink-2); text-align: right; overflow-wrap: anywhere; min-width: 0; }
.list .empty { color: var(--muted); }

.toast { position: fixed; left: 50%; bottom: calc(20px + env(safe-area-inset-bottom, 0px)); transform: translateX(-50%); max-width: calc(100% - 32px); background: var(--ink); color: var(--bg); padding: 10px 16px; border-radius: 8px; font-size: 14px; box-shadow: var(--shadow); z-index: 30; }
@media (prefers-reduced-motion: no-preference) { .btn, .tabs-inner button, .seg button { transition: color .15s, background .15s, border-color .15s; } }

/* điện thoại */
@media (max-width: 640px) {
  .topbar { padding: 10px 16px; }
  .brand-host { display: none; }
  .pill { font-size: 11.5px; padding: 3px 8px; }
  .wrap { padding-inline: 16px; padding-block: 18px 56px; }
  /* thanh tab cuộn ngang: mờ dần mép phải để biết còn tab */
  .tabs-inner { mask-image: linear-gradient(to right, #000 85%, transparent); -webkit-mask-image: linear-gradient(to right, #000 85%, transparent); }
  .controls, .controls input { width: 100%; }
  .controls input { flex: 1; }
  /* bảng → thẻ: mỗi dòng một khối, mỗi ô "nhãn … giá trị" */
  .table.responsive thead { display: none; }
  .table.responsive tr { display: block; padding: 10px 14px; border-top: 1px solid var(--line); }
  .table.responsive tbody tr:first-child { border-top: 0; }
  .table.responsive td { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding: 3px 0; border: 0; text-align: right; }
  .table.responsive td::before { content: attr(data-label); color: var(--muted); font: 12.5px var(--sans); text-align: left; flex: none; }
  .table.responsive td:first-child { display: block; text-align: left; padding-bottom: 6px; }
  .table.responsive td:first-child::before { content: none; }
  .table.responsive td:last-child:has(.actions)::before { content: none; }
  .table.responsive td:has(.actions) { padding-top: 8px; }
  .table.responsive .actions { justify-content: flex-start; width: 100%; }
  .table.responsive .sub-line { max-width: none; }
  .table.responsive tr.empty-row td { display: block; text-align: center; }
  .table.responsive tr.empty-row td::before { content: none; }
}
@media (max-width: 640px) {
  /* bảng tiến trình: giữ dạng bảng, bỏ cột User + Chạy được */
  .table.compact th:nth-child(3), .table.compact td:nth-child(3),
  .table.compact th:nth-child(6), .table.compact td:nth-child(6) { display: none; }
  .table.compact th, .table.compact td { padding: 8px 10px; }
  .table.compact { font-size: 13px; }
  .table.compact td.num { font-size: 12px; }
  .table.compact .name { display: inline-block; max-width: 34vw; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; vertical-align: bottom; }
}

/* địa chỉ máy chủ */
.addr-card { margin-bottom: 18px; }
.addr-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(250px, 1fr)); gap: 14px 24px; }
.addr-group h3 { font-size: 12.5px; font-weight: 600; color: var(--muted); margin: 0 0 6px; }
.addr-row { display: flex; align-items: center; justify-content: space-between; gap: 8px; padding: 3px 0; min-width: 0; }
.addr-row .addr-label { font-size: 12.5px; color: var(--muted); flex: none; }
.addr-val { display: flex; align-items: center; gap: 4px; min-width: 0; }
.addr-val code { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.copy { font: 11.5px var(--sans); border: 1px solid var(--line); background: var(--surface); color: var(--muted); border-radius: 5px; padding: 1px 6px; cursor: pointer; flex: none; }
.copy:hover { color: var(--accent); border-color: var(--accent); }
.copy.done { color: var(--good); border-color: var(--good); }
.card-head.pad { padding: 16px 18px 0; }
.tag.warn { color: var(--warn); border-color: var(--warn); }
.addr-card .card-head { align-items: flex-start; }
@media (max-width: 640px) { .addr-card .card-head .small { display: none; } }

/* uptime */
.uptime-card { margin-bottom: 18px; }
.uptime-card .card-head { align-items: flex-start; flex-wrap: wrap; }
.uptime { display: flex; flex-direction: column; gap: 10px; }
.up-row { display: grid; grid-template-columns: minmax(150px, 220px) 64px minmax(0, 1fr); gap: 12px; align-items: center; }
.up-name { min-width: 0; display: flex; align-items: baseline; font-size: 13.5px; font-weight: 550; }
.up-name > span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; min-width: 0; }
.up-name .tag { flex: none; }
.up-name .tag { font-weight: 400; }
.up-pct { font: 12.5px var(--mono); text-align: right; font-variant-numeric: tabular-nums; color: var(--ink-2); }
.up-bars { display: flex; gap: 2px; height: 26px; }
.up-bars span { flex: 1 1 0; min-width: 2px; border-radius: 2px; background: var(--surface-2); outline: 1px solid var(--line-soft); outline-offset: -1px; }
.up-bars span.full { background: var(--good); outline: 0; }
.up-bars span.part { background: var(--warn); outline: 0; }
.up-bars span.down { background: var(--bad); outline: 0; }
.up-bars span:hover { filter: brightness(1.15); }
.up-axis { display: grid; grid-template-columns: minmax(150px, 220px) 64px minmax(0, 1fr); gap: 12px; font: 11px var(--mono); color: var(--muted); }
.up-axis > span:last-child { display: flex; justify-content: space-between; }
.uptime-legend { display: flex; gap: 6px 16px; flex-wrap: wrap; font-size: 12px; color: var(--muted); margin-top: 12px; }
.uptime-legend i { display: inline-block; width: 10px; height: 10px; border-radius: 2px; margin-right: 6px; vertical-align: -1px; }
.u-full { background: var(--good); } .u-part { background: var(--warn); } .u-down { background: var(--bad); }
.u-none { background: var(--surface-2); outline: 1px solid var(--line); outline-offset: -1px; }
@media (max-width: 640px) {
  .up-row { grid-template-columns: minmax(0, 1fr) auto; gap: 4px 8px; }
  .up-row .up-bars { grid-column: 1 / -1; }
  .up-axis { grid-template-columns: 1fr; }
  .up-axis > span:not(:last-child) { display: none; }
}
.temp-hot { color: var(--warn); } .temp-crit { color: var(--bad); }
@media (max-width: 640px) { .tiles { grid-template-columns: 1fr; } }