:root {
  --ink: #14233b;
  --ink-2: #1e3252;
  --ink-text: #c9d4e5;
  --bg: #f3f5f8;
  --panel: #ffffff;
  --line: #dde3eb;
  --line-2: #eef1f5;
  --text: #1b2432;
  --muted: #5b6778;
  --faint: #8a95a5;
  --signal: #0b7a6b;
  --signal-bg: #e3f3f0;
  --ring: #b7791f;
  --ring-bg: #fbf1df;
  --danger: #b42318;
  --danger-bg: #fdecea;
  --info: #2e5aac;
  --info-bg: #e8eefa;
  --radius: 6px;
  --font: "Be Vietnam Pro", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #0f1826; --panel: #152033; --line: #26344b; --line-2: #1c293e;
    --text: #e3e9f2; --muted: #9aa7ba; --faint: #6f7d92;
    --signal: #3cc2a8; --signal-bg: #11332f; --ring: #e0a54a; --ring-bg: #3a2c14;
    --danger: #f07167; --danger-bg: #3b1a1a; --info: #7ea2e6; --info-bg: #1a2742;
    --ink: #0b1320; --ink-2: #16233a;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; height: 100%; }
body { font-family: var(--font); font-size: 14px; line-height: 1.5; color: var(--text); background: var(--bg); }
.num, td.num, .tabular { font-variant-numeric: tabular-nums; }
a { color: var(--info); text-decoration: none; }
a:hover { text-decoration: underline; }
h1 { font-size: 22px; font-weight: 600; margin: 0; letter-spacing: -0.01em; }
h2 { font-size: 16px; font-weight: 600; margin: 0 0 12px; }
h3 { font-size: 14px; font-weight: 600; margin: 0 0 8px; }
:focus-visible { outline: 2px solid var(--info); outline-offset: 2px; }
[v-cloak] { display: none; }

/* ---------- khung */
.shell { display: grid; grid-template-columns: 232px 1fr; min-height: 100vh; }
.side { background: var(--ink); color: var(--ink-text); display: flex; flex-direction: column; position: sticky; top: 0; height: 100vh; }
.brand { padding: 20px 20px 18px; font-weight: 700; font-size: 17px; color: #fff; display: flex; align-items: center; gap: 10px; }
.brand-mark { width: 26px; height: 26px; border-radius: 50%; border: 2px solid #3cc2a8; position: relative; }
.brand-mark::after { content: ""; position: absolute; inset: 5px; border-radius: 50%; background: #3cc2a8; }
.nav { padding: 4px 10px; display: flex; flex-direction: column; gap: 1px; flex: 1; overflow-y: auto; }
.nav a { color: var(--ink-text); padding: 8px 12px; border-radius: var(--radius); display: block; font-weight: 500; }
.nav a:hover { background: var(--ink-2); text-decoration: none; color: #fff; }
.nav a.on { background: var(--ink-2); color: #fff; box-shadow: inset 3px 0 0 #3cc2a8; }
.nav .group { font-size: 12px; color: #7d8ca3; padding: 16px 12px 4px; }
.side-foot { padding: 14px 20px; border-top: 1px solid var(--ink-2); font-size: 13px; }
.side-foot .who { color: #fff; font-weight: 600; }
.side-foot button { background: none; border: 0; color: var(--ink-text); padding: 0; cursor: pointer; font: inherit; margin-right: 12px; }
.side-foot button:hover { color: #fff; text-decoration: underline; }
.main { min-width: 0; padding: 24px 32px 48px; }
.page-head { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 20px; flex-wrap: wrap; }
.page-head .sub { color: var(--muted); margin-top: 2px; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.grow { flex: 1; }
.muted { color: var(--muted); }
.faint { color: var(--faint); }
.small { font-size: 12px; }
.mono { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; font-size: 12px; }

/* ---------- panel & bảng */
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; }
.panel + .panel, .panel + .grid2, .grid2 + .panel { margin-top: 16px; }
.panel-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 14px 18px; border-bottom: 1px solid var(--line); }
.panel-head h2 { margin: 0; }
.panel-body { padding: 16px 18px; }
.grid2 { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; }
th { text-align: left; font-weight: 600; font-size: 12px; color: var(--muted); padding: 10px 14px; border-bottom: 1px solid var(--line); white-space: nowrap; background: var(--line-2); }
td { padding: 10px 14px; border-bottom: 1px solid var(--line-2); vertical-align: middle; }
tr:last-child td { border-bottom: 0; }
tr.click { cursor: pointer; }
tr.click:hover td { background: var(--line-2); }
th.num, td.num { text-align: right; }
.empty { padding: 36px 18px; text-align: center; color: var(--muted); }
.empty strong { display: block; color: var(--text); margin-bottom: 4px; }

/* ---------- nút & form */
.btn { font: inherit; font-weight: 500; border: 1px solid var(--line); background: var(--panel); color: var(--text); padding: 7px 14px; border-radius: var(--radius); cursor: pointer; white-space: nowrap; display: inline-flex; align-items: center; gap: 6px; }
.btn:hover:not(:disabled) { border-color: var(--faint); }
.btn:disabled { opacity: .5; cursor: not-allowed; }
.btn.primary { background: var(--ink); border-color: var(--ink); color: #fff; }
.btn.primary:hover:not(:disabled) { background: var(--ink-2); }
.btn.go { background: var(--signal); border-color: var(--signal); color: #fff; }
.btn.danger { color: var(--danger); }
.btn.danger.solid { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn.sm { padding: 4px 10px; font-size: 13px; }
.btn.link { border: 0; background: none; padding: 0; color: var(--info); }
label.f, div.f { display: flex; flex-direction: column; gap: 4px; font-weight: 500; font-size: 13px; }
label.f .hint, div.f .hint { font-weight: 400; color: var(--muted); font-size: 12px; }
input, select, textarea { font: inherit; color: var(--text); background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 7px 10px; min-width: 0; }
input:focus, select:focus, textarea:focus { border-color: var(--info); outline: none; box-shadow: 0 0 0 3px var(--info-bg); }
input[type=checkbox] { width: 16px; height: 16px; accent-color: var(--signal); }
textarea { resize: vertical; }
textarea.code { font-family: ui-monospace, Menlo, Consolas, monospace; font-size: 12.5px; line-height: 1.55; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 16px; }
.form-grid .full { grid-column: 1 / -1; }
.form-grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
fieldset { border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px 14px; margin: 0; }
legend { font-weight: 600; font-size: 13px; padding: 0 6px; }
.days { display: flex; gap: 4px; }
.days button { font: inherit; width: 40px; padding: 6px 0; border: 1px solid var(--line); background: var(--panel); border-radius: var(--radius); cursor: pointer; color: var(--muted); }
.days button.on { background: var(--ink); border-color: var(--ink); color: #fff; }
.check { display: flex; gap: 8px; align-items: center; font-weight: 400; }
.err-box { background: var(--danger-bg); color: var(--danger); border-radius: var(--radius); padding: 10px 12px; font-size: 13px; }
.warn-box { background: var(--ring-bg); color: var(--ring); border-radius: var(--radius); padding: 10px 12px; font-size: 13px; }
.ok-box { background: var(--signal-bg); color: var(--signal); border-radius: var(--radius); padding: 10px 12px; font-size: 13px; }
.err-box ul, .warn-box ul { margin: 4px 0 0; padding-left: 18px; }

/* ---------- nhãn trạng thái */
.badge { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 20px; white-space: nowrap; background: var(--line-2); color: var(--muted); }
.badge::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }
.badge.ok { background: var(--signal-bg); color: var(--signal); }
.badge.warn { background: var(--ring-bg); color: var(--ring); }
.badge.err { background: var(--danger-bg); color: var(--danger); }
.badge.info { background: var(--info-bg); color: var(--info); }

/* ---------- tab */
.tabs { display: flex; gap: 2px; border-bottom: 1px solid var(--line); margin-bottom: 16px; }
.tabs button { font: inherit; font-weight: 500; background: none; border: 0; padding: 10px 14px; color: var(--muted); cursor: pointer; border-bottom: 2px solid transparent; margin-bottom: -1px; }
.tabs button.on { color: var(--text); border-bottom-color: var(--ink); }
.seg { display: inline-flex; border: 1px solid var(--line); border-radius: var(--radius); overflow: hidden; }
.seg button { font: inherit; background: var(--panel); border: 0; padding: 6px 12px; cursor: pointer; color: var(--muted); }
.seg button + button { border-left: 1px solid var(--line); }
.seg button.on { background: var(--ink); color: #fff; }

/* ---------- tổng quan: dải trạng thái */
.status-strip { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); background: var(--panel); border: 1px solid var(--line); border-radius: 8px; margin-bottom: 16px; }
.status-strip > div { padding: 14px 18px; border-right: 1px solid var(--line-2); }
.status-strip > div:last-child { border-right: 0; }
.status-strip .k { font-size: 12px; color: var(--muted); }
.status-strip .v { font-size: 22px; font-weight: 600; font-variant-numeric: tabular-nums; margin-top: 2px; }
.status-strip .v small { font-size: 13px; font-weight: 500; color: var(--muted); margin-left: 6px; }

/* ---------- tổng quan: bảng kênh (điểm nhấn) */
.board-row { display: grid; grid-template-columns: minmax(180px, 260px) 1fr auto; gap: 18px; align-items: center; padding: 16px 18px; border-bottom: 1px solid var(--line-2); }
.board-row:last-child { border-bottom: 0; }
.board-name a { font-weight: 600; color: var(--text); }
.board-meta { font-size: 12px; color: var(--muted); margin-top: 3px; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.board-side .board-meta { justify-content: flex-end; }
.slots { display: flex; flex-wrap: wrap; gap: 3px; }
.slot { width: 14px; height: 22px; border-radius: 3px; border: 1px solid var(--line); background: var(--line-2); }
.slot.talk { background: var(--signal); border-color: var(--signal); }
.slot.ring { background: var(--ring-bg); border-color: var(--ring); animation: ring 1s steps(2) infinite; }
.slot.more { width: auto; padding: 0 6px; font-size: 11px; line-height: 20px; color: var(--muted); background: none; }
@keyframes ring { 50% { background: var(--ring); } }
@media (prefers-reduced-motion: reduce) { .slot.ring { animation: none; } }
.slot-legend { display: flex; gap: 14px; font-size: 12px; color: var(--muted); }
.slot-legend span { display: inline-flex; align-items: center; gap: 5px; }
.slot-legend i { display: inline-block; width: 10px; height: 14px; border-radius: 2px; border: 1px solid var(--line); background: var(--line-2); }
.slot-legend i.talk { background: var(--signal); border-color: var(--signal); }
.slot-legend i.ring { background: var(--ring); border-color: var(--ring); }
.board-side { text-align: right; min-width: 170px; }
.board-side .big { font-size: 18px; font-weight: 600; font-variant-numeric: tabular-nums; }
.progress { height: 6px; background: var(--line-2); border-radius: 3px; overflow: hidden; }
.progress > div { height: 100%; background: var(--ink); }
.progress.signal > div { background: var(--signal); }
.bar-cell { display: flex; align-items: center; gap: 10px; }
.bar-cell .progress { flex: 1; min-width: 60px; }

/* ---------- kịch bản */
.editor { display: grid; grid-template-columns: 1fr 320px; gap: 16px; align-items: start; }
.node-card { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; margin-bottom: 12px; scroll-margin-top: 16px; }
.node-card.start { border-color: var(--signal); box-shadow: inset 3px 0 0 var(--signal); }
.node-card.flash { box-shadow: 0 0 0 3px var(--info-bg); border-color: var(--info); }
.node-head { display: flex; gap: 10px; align-items: center; padding: 10px 14px; border-bottom: 1px solid var(--line-2); }
.node-head input.nid { font-weight: 600; width: 180px; }
.node-type { font-size: 12px; font-weight: 600; color: var(--muted); background: var(--line-2); padding: 3px 8px; border-radius: 4px; }
.node-body { padding: 12px 14px; display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px 14px; }
.node-body .full { grid-column: 1 / -1; }
.list-edit { display: flex; flex-direction: column; gap: 6px; }
.list-edit .item { display: flex; gap: 6px; }
.list-edit .item input, .list-edit .item select { flex: 1; }
.x { font: inherit; border: 1px solid var(--line); background: var(--panel); color: var(--muted); border-radius: var(--radius); width: 32px; cursor: pointer; flex: none; }
.x:hover { color: var(--danger); border-color: var(--danger); }
.side-panel { position: sticky; top: 16px; }
.outline { list-style: none; margin: 0; padding: 0; }
.outline li { padding: 6px 0; border-bottom: 1px solid var(--line-2); font-size: 13px; }
.outline li:last-child { border-bottom: 0; }

/* ---------- modal */
.modal-back { position: fixed; inset: 0; background: rgba(12, 20, 34, .45); display: flex; align-items: flex-start; justify-content: center; padding: 48px 16px; z-index: 50; overflow-y: auto; }
.modal { background: var(--panel); border-radius: 10px; width: 100%; max-width: 560px; box-shadow: 0 20px 50px rgba(0,0,0,.25); }
.modal.wide { max-width: 860px; }
.modal-head { display: flex; justify-content: space-between; align-items: center; padding: 16px 20px; border-bottom: 1px solid var(--line); }
.modal-head h2 { margin: 0; }
.modal-body { padding: 18px 20px; }
.modal-foot { display: flex; justify-content: flex-end; gap: 8px; padding: 14px 20px; border-top: 1px solid var(--line); }
.close { font: inherit; font-size: 20px; line-height: 1; background: none; border: 0; cursor: pointer; color: var(--muted); padding: 4px 8px; }

/* ---------- chi tiết */
dl.kv { display: grid; grid-template-columns: 160px 1fr; gap: 8px 16px; margin: 0; }
dl.kv dt { color: var(--muted); }
dl.kv dd { margin: 0; word-break: break-word; }
.timeline { list-style: none; padding: 0; margin: 0; }
.timeline li { display: grid; grid-template-columns: 80px 1fr; gap: 12px; padding: 7px 0; border-bottom: 1px solid var(--line-2); font-size: 13px; }
.chip { display: inline-block; background: var(--line-2); border-radius: 4px; padding: 1px 7px; margin: 2px 4px 2px 0; font-size: 12px; }
pre.log { margin: 0; white-space: pre-wrap; word-break: break-word; font-size: 12px; font-family: ui-monospace, Menlo, Consolas, monospace; }
.lvl-ERROR, .lvl-CRITICAL { color: var(--danger); font-weight: 600; }
.lvl-WARNING { color: var(--ring); font-weight: 600; }

/* ---------- phân trang, thông báo */
.pager { display: flex; justify-content: space-between; align-items: center; padding: 10px 14px; border-top: 1px solid var(--line); font-size: 13px; color: var(--muted); }
.toasts { position: fixed; right: 20px; bottom: 20px; display: flex; flex-direction: column; gap: 8px; z-index: 100; }
.toast { background: var(--ink); color: #fff; padding: 10px 16px; border-radius: 8px; max-width: 420px; box-shadow: 0 8px 24px rgba(0,0,0,.2); }
.toast.err { background: var(--danger); }
.filters { display: flex; gap: 8px; flex-wrap: wrap; align-items: flex-end; padding: 12px 14px; border-bottom: 1px solid var(--line); }
.filters .f { font-size: 12px; }

/* ---------- đăng nhập */
.login-wrap { min-height: 100vh; display: grid; grid-template-columns: 1fr 1fr; }
.login-art { background: var(--ink); color: var(--ink-text); padding: 48px; display: flex; flex-direction: column; justify-content: space-between; }
.login-art .brand { padding: 0; font-size: 20px; }
.login-art .slots { max-width: 360px; gap: 4px; }
.login-art .slot { border-color: #2a3e60; background: #1a2c49; }
.login-art .slot.talk { background: #3cc2a8; border-color: #3cc2a8; }
.login-art p { max-width: 380px; font-size: 15px; }
.login-form { display: flex; align-items: center; justify-content: center; padding: 32px; }
.login-form form { width: 100%; max-width: 340px; display: flex; flex-direction: column; gap: 14px; }

@media (max-width: 960px) {
  .shell { grid-template-columns: 1fr; }
  .side { position: static; height: auto; }
  .nav { flex-direction: row; flex-wrap: wrap; }
  .nav .group { display: none; }
  .main { padding: 16px; }
  .grid2, .editor, .form-grid, .form-grid.three, .node-body { grid-template-columns: 1fr; }
  .board-row { grid-template-columns: 1fr; }
  .board-side { text-align: left; }
  .login-wrap { grid-template-columns: 1fr; }
  .login-art { display: none; }
  dl.kv { grid-template-columns: 1fr; }
}
.grid2 > .panel { margin-top: 0; }

/* ---------- giấy phép: menu khoá, trang làm mờ */
.nav a.locked { opacity: .55; }
.nav a.locked::after { content: " 🔒"; font-size: 11px; }
.locked-page { position: relative; min-height: 520px; }
.locked-blur { filter: blur(4px); opacity: .55; pointer-events: none; user-select: none; }
.sk { display: inline-block; height: 14px; background: var(--line); border-radius: 4px; }
.status-strip .v.sk { width: 60%; height: 22px; margin-top: 6px; }
.sk-row { display: flex; gap: 18px; padding: 14px 18px; border-bottom: 1px solid var(--line-2); }
.lock-card { position: absolute; top: 90px; left: 50%; transform: translateX(-50%); width: min(460px, 92%); text-align: center; padding: 26px 28px; box-shadow: 0 16px 40px rgba(0,0,0,.14); }
.lock-card h2 { margin: 6px 0 8px; }
.lock-icon { font-size: 34px; }