:root {
  --bg: #f5f6f8;
  --surface: #ffffff;
  --surface-2: #f0f1f4;
  --border: #e2e4ea;
  --text: #16181d;
  --muted: #646b78;
  --accent: #4f46e5;
  --accent-soft: #eceafd;
  --hot: #e5484d;
  --warm: #f08c00;
  --good: #1f9d55;
  --cool: #8a91a0;
  --shadow: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .05);
  --radius: 10px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --surface: #171a20;
    --surface-2: #1f232b;
    --border: #2a2f39;
    --text: #e8eaef;
    --muted: #949bab;
    --accent: #8b85ff;
    --accent-soft: #25234a;
    --hot: #ff6369;
    --warm: #ffa94d;
    --good: #3dd68c;
    --cool: #6b7280;
    --shadow: none;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 14px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}
a { color: inherit; }
button, input, select, textarea { font: inherit; color: inherit; }
[hidden] { display: none !important; }

/* ---------- top bar ---------- */
.topbar {
  position: sticky; top: 0; z-index: 10;
  display: flex; align-items: center; gap: 20px; flex-wrap: wrap;
  padding: 10px 20px;
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}
.brand { font-weight: 700; font-size: 16px; display: flex; align-items: center; gap: 8px; white-space: nowrap; }
.brand small { font-weight: 400; color: var(--muted); font-size: 12px; }
.logo { background: var(--accent); color: #fff; border-radius: 7px; padding: 2px 6px; font-size: 13px; }
.tabs { display: flex; gap: 2px; flex-wrap: wrap; }
.tabs button {
  border: 0; background: none; padding: 7px 12px; border-radius: 8px; cursor: pointer; color: var(--muted); font-weight: 500;
}
.tabs button:hover { background: var(--surface-2); color: var(--text); }
.tabs button.active { background: var(--accent-soft); color: var(--accent); }
.top-right { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.quota { display: flex; flex-direction: column; gap: 3px; font-size: 12px; color: var(--muted); min-width: 150px; }
.quota .bar { height: 5px; background: var(--surface-2); border-radius: 3px; overflow: hidden; }
.quota .bar div { height: 100%; width: 0; background: var(--good); transition: width .3s; }
.user { width: 120px; padding: 6px 8px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); }
.badge { font-size: 11px; font-weight: 600; padding: 3px 8px; border-radius: 99px; }
.badge.demo { background: #fff3bf; color: #8a5a00; }
@media (prefers-color-scheme: dark) { .badge.demo { background: #4a3a00; color: #ffd66b; } }

main { max-width: 1480px; margin: 0 auto; padding: 16px 20px 60px; }
.tab-panel { display: none; }
.tab-panel.active { display: block; }

.card {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
  box-shadow: var(--shadow); padding: 14px 16px; margin-bottom: 14px;
}
h2 { font-size: 15px; margin: 0 0 6px; }
.hint { color: var(--muted); font-size: 12.5px; }

/* ---------- buttons / inputs ---------- */
button.primary {
  background: var(--accent); color: #fff; border: 0; border-radius: 8px; padding: 8px 22px; font-weight: 600; cursor: pointer;
}
button.primary:disabled { opacity: .55; cursor: wait; }
button.ghost, .presets button, .row-actions button {
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px; padding: 6px 12px; cursor: pointer;
}
button.ghost:hover, .presets button:hover { border-color: var(--accent); color: var(--accent); }
button.link { background: none; border: 0; color: var(--accent); cursor: pointer; padding: 0; }
button.danger { color: var(--hot); }
input, select, textarea {
  background: var(--surface); border: 1px solid var(--border); border-radius: 7px; padding: 6px 8px; min-width: 0;
}
input:focus, select:focus, textarea:focus { outline: 2px solid var(--accent-soft); border-color: var(--accent); }
textarea { width: 100%; resize: vertical; }

.seg { display: inline-flex; background: var(--surface-2); border-radius: 8px; padding: 3px; gap: 2px; }
.seg button { border: 0; background: none; padding: 5px 14px; border-radius: 6px; cursor: pointer; color: var(--muted); font-weight: 500; }
.seg button.active { background: var(--surface); color: var(--text); box-shadow: var(--shadow); }
.seg.small button { padding: 3px 10px; font-size: 13px; }

/* ---------- seed form ---------- */
.seed-head { display: flex; align-items: center; gap: 14px; flex-wrap: wrap; margin-bottom: 10px; }
.seed-body { display: grid; grid-template-columns: minmax(260px, 1fr) 2fr; gap: 14px; }
.seed-opts { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 10px 14px; align-content: flex-start; }
.seed-opts > div:not(.seed-go) { display: contents; }
.seed-opts label { display: flex; flex-direction: column; gap: 3px; font-size: 12px; color: var(--muted); }
.imp-only .hint { align-self: flex-end; padding-bottom: 7px; }
.seed-opts label.check { flex-direction: row; align-items: center; gap: 6px; font-size: 13px; color: var(--text); padding-bottom: 7px; }
.seed-go { margin-left: auto; display: flex; align-items: center; gap: 12px; }
.cost { font-size: 12px; color: var(--muted); text-align: right; }
.progress { margin-top: 10px; font-size: 13px; color: var(--muted); }
.progress .line { padding: 2px 0; }
.progress .ok { color: var(--good); }
.progress .err { color: var(--hot); }
@media (max-width: 860px) { .seed-body { grid-template-columns: 1fr; } }

/* ---------- seed chips ---------- */
.seed-chips { display: flex; flex-wrap: wrap; gap: 6px; margin: -2px 0 12px; align-items: center; }
.seed-chips .lbl, .presets .lbl { font-size: 12px; color: var(--muted); margin-right: 2px; }
.chip {
  display: inline-flex; align-items: center; gap: 6px; font-size: 12.5px; padding: 4px 10px; border-radius: 99px;
  border: 1px solid var(--border); background: var(--surface); cursor: pointer;
}
.chip.active { background: var(--accent); border-color: var(--accent); color: #fff; }
.chip .n { opacity: .7; font-size: 11px; }
.chip .kind { font-size: 10px; opacity: .7; text-transform: uppercase; letter-spacing: .03em; }

/* ---------- filters ---------- */
.presets { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; margin-bottom: 12px; }
.presets button { font-size: 12.5px; padding: 4px 10px; border-radius: 99px; }
.presets button.ghost { border-style: dashed; }
.filter-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(175px, 1fr)); gap: 10px 12px; }
.filter-grid label { display: flex; flex-direction: column; gap: 3px; font-size: 12px; color: var(--muted); }
.filter-grid label.wide { grid-column: span 2; }
.filter-grid input, .filter-grid select { width: 100%; }
.pair { display: flex; gap: 4px; }
@media (max-width: 520px) { .filter-grid label.wide { grid-column: auto; } }

.result-bar { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin: 6px 0 10px; flex-wrap: wrap; }
.result-actions { display: flex; gap: 8px; align-items: center; }
#resultCount, #savedCount { color: var(--muted); font-size: 13px; }
.more { text-align: center; margin-top: 16px; }

/* ---------- video cards ---------- */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(270px, 1fr)); gap: 14px; }
.vcard {
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
  display: flex; flex-direction: column; box-shadow: var(--shadow);
}
.thumb { position: relative; aspect-ratio: 16 / 9; background: var(--surface-2); cursor: pointer; display: block; overflow: hidden; }
.thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.thumb .ph {
  width: 100%; height: 100%; display: flex; align-items: center; justify-content: center; padding: 14px;
  color: #fff; font-weight: 700; text-align: center; font-size: 15px; text-shadow: 0 1px 2px rgba(0,0,0,.3);
}
.xbadge {
  position: absolute; top: 8px; left: 8px; font-weight: 800; font-size: 13px; padding: 2px 8px; border-radius: 6px;
  color: #fff; background: var(--cool);
}
.xbadge small { font-weight: 500; font-size: 10px; opacity: .9; margin-left: 3px; }
.xbadge.t1 { background: var(--good); }
.xbadge.t2 { background: var(--warm); }
.xbadge.t3 { background: var(--hot); }
.dur { position: absolute; bottom: 6px; right: 6px; background: rgba(0,0,0,.78); color: #fff; font-size: 11.5px; padding: 1px 5px; border-radius: 4px; }
.savedmark { position: absolute; top: 8px; right: 8px; background: var(--accent); color: #fff; font-size: 11px; padding: 2px 7px; border-radius: 5px; }
.vbody { padding: 10px 12px 12px; display: flex; flex-direction: column; gap: 6px; flex: 1; }
.vtitle { font-weight: 600; line-height: 1.3; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; text-decoration: none; }
.vtitle:hover { color: var(--accent); }
.vch { font-size: 12.5px; color: var(--muted); display: flex; gap: 6px; align-items: center; flex-wrap: wrap; }
.vch a { text-decoration: none; }
.vch a:hover { text-decoration: underline; }
.tag { font-size: 10.5px; font-weight: 600; padding: 1px 6px; border-radius: 4px; background: var(--surface-2); color: var(--muted); }
.tag.new { background: #d3f9d8; color: #1b6d33; }
@media (prefers-color-scheme: dark) { .tag.new { background: #12391f; color: #6ee79a; } }
.metrics { display: grid; grid-template-columns: repeat(3, 1fr); gap: 4px; margin-top: 2px; }
.metric { background: var(--surface-2); border-radius: 6px; padding: 4px 6px; }
.metric b { display: block; font-size: 13.5px; font-variant-numeric: tabular-nums; }
.metric span { font-size: 10.5px; color: var(--muted); }
.vfoot { display: flex; align-items: center; justify-content: space-between; gap: 6px; margin-top: auto; padding-top: 4px; }
.vfoot .seeds { font-size: 11px; color: var(--muted); overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.vfoot .acts { display: flex; gap: 4px; flex-shrink: 0; }
.vfoot .acts button { font-size: 12px; padding: 3px 8px; border-radius: 6px; border: 1px solid var(--border); background: var(--surface); cursor: pointer; }
.vfoot .acts button:hover { border-color: var(--accent); color: var(--accent); }
.vfoot .acts button.on { background: var(--accent); border-color: var(--accent); color: #fff; }
.note { font-size: 12px; color: var(--muted); background: var(--surface-2); padding: 4px 6px; border-radius: 6px; white-space: pre-wrap; }
.empty { grid-column: 1 / -1; text-align: center; color: var(--muted); padding: 50px 20px; background: var(--surface); border: 1px dashed var(--border); border-radius: var(--radius); }

/* ---------- tables ---------- */
.table-wrap { overflow-x: auto; }
table.data { width: 100%; border-collapse: collapse; font-size: 13px; }
table.data th { text-align: left; font-size: 11.5px; font-weight: 600; color: var(--muted); padding: 6px 8px; border-bottom: 1px solid var(--border); white-space: nowrap; }
table.data td { padding: 7px 8px; border-bottom: 1px solid var(--border); vertical-align: middle; }
table.data td.num, table.data th.num { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
table.data tr:hover td { background: var(--surface-2); }
table.data .tthumb { width: 96px; aspect-ratio: 16/9; border-radius: 5px; overflow: hidden; background: var(--surface-2); cursor: pointer; }
table.data .tthumb img, table.data .tthumb .ph { width: 100%; height: 100%; object-fit: cover; font-size: 9px; padding: 3px; }
.res-table .ttitle { font-weight: 600; max-width: 420px; }
.opp { display: inline-block; min-width: 34px; text-align: center; font-weight: 700; border-radius: 5px; padding: 1px 6px; color: #fff; }
.status-ok { color: var(--good); }
.status-err { color: var(--hot); }

/* ---------- detail dialog ---------- */
dialog {
  border: 0; border-radius: 14px; padding: 0; width: min(980px, calc(100vw - 32px)); max-height: calc(100vh - 40px);
  background: var(--surface); color: var(--text); box-shadow: 0 20px 60px rgba(0,0,0,.35);
}
dialog::backdrop { background: rgba(10, 12, 16, .55); }
.detail-inner { position: relative; padding: 18px; }
.close { position: absolute; top: 8px; right: 10px; border: 0; background: none; font-size: 26px; cursor: pointer; color: var(--muted); line-height: 1; }
.detail-grid { display: grid; grid-template-columns: 1.35fr 1fr; gap: 18px; }
@media (max-width: 760px) { .detail-grid { grid-template-columns: 1fr; } }
.player { aspect-ratio: 16 / 9; background: #000; border-radius: 10px; overflow: hidden; }
.player iframe { width: 100%; height: 100%; border: 0; }
.player .ph { height: 100%; display: flex; align-items: center; justify-content: center; color: #bbb; padding: 20px; text-align: center; }
.detail h3 { margin: 12px 0 4px; font-size: 17px; line-height: 1.3; padding-right: 20px; }
.dmetrics { display: grid; grid-template-columns: 1fr 1fr; gap: 6px; }
.dmetrics .metric b { font-size: 16px; }
.spark { width: 100%; height: 90px; margin-top: 8px; }
.spark path.line { fill: none; stroke: var(--accent); stroke-width: 2; }
.spark path.area { fill: var(--accent-soft); }
.save-box { display: flex; flex-direction: column; gap: 6px; margin-top: 12px; }
.save-box .row { display: flex; gap: 6px; }
.save-box select { flex: 1; }
.dlinks { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 10px; }
.desc { font-size: 12.5px; color: var(--muted); white-space: pre-wrap; max-height: 120px; overflow: auto; margin-top: 8px; }

/* ---------- toasts ---------- */
#toasts { position: fixed; bottom: 18px; right: 18px; display: flex; flex-direction: column; gap: 8px; z-index: 100; }
.toast { background: var(--text); color: var(--bg); padding: 10px 14px; border-radius: 9px; max-width: 380px; font-size: 13px; box-shadow: 0 8px 24px rgba(0,0,0,.2); }
.toast.err { background: var(--hot); color: #fff; }

.row-actions { display: flex; gap: 8px; margin: 10px 0; flex-wrap: wrap; align-items: center; }

/* ---------- hôm nay ---------- */
.today-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.today-head h1 { font-size: 20px; margin: 0 0 2px; }
.tsec { margin-bottom: 22px; }
.tsec-head { display: flex; align-items: baseline; gap: 10px; flex-wrap: wrap; margin-bottom: 8px; }
.tsec-head h2 { margin: 0; font-size: 16px; }
.tsec-head .link { margin-left: auto; }
.strip { display: grid; grid-auto-flow: column; grid-auto-columns: minmax(260px, 280px); gap: 12px; overflow-x: auto; padding-bottom: 6px; scroll-snap-type: x proximity; }
.strip > * { scroll-snap-align: start; }
.topic-block { margin-bottom: 14px; }
.topic-block h3 { font-size: 13.5px; margin: 0 0 6px; color: var(--muted); font-weight: 600; }
.trend-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(420px, 1fr)); gap: 14px; }
@media (max-width: 520px) { .trend-grid { grid-template-columns: 1fr; } }
.trend-table td { vertical-align: top; }
.trend-table .phrase { font-weight: 600; white-space: nowrap; }
.trend-table .ex { font-size: 12px; color: var(--muted); max-width: 320px; }
.trend-table .ex a { color: inherit; }
.lift { font-size: 11px; font-weight: 700; padding: 1px 6px; border-radius: 5px; white-space: nowrap; }
.lift.up { background: #d3f9d8; color: #1b6d33; }
.lift.flat { background: var(--surface-2); color: var(--muted); }
.lift.down { background: #ffe3e3; color: #a51111; }
@media (prefers-color-scheme: dark) { .lift.up { background: #12391f; color: #6ee79a; } .lift.down { background: #3d1414; color: #ff8787; } }
.vph { font-size: 11px; color: var(--accent); font-weight: 700; }

/* ---------- khám phá ---------- */
details.seed-form > summary { cursor: pointer; list-style: none; padding: 2px 0; }
details.seed-form > summary::-webkit-details-marker { display: none; }
details.seed-form[open] > summary { margin-bottom: 10px; }
.kwgroup { border-top: 1px solid var(--border); }
.kwgroup > summary { cursor: pointer; padding: 9px 2px; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.kwgroup > summary b { min-width: 190px; }
.kwgroup table { margin-bottom: 10px; }
.badge.on { background: #d3f9d8; color: #1b6d33; }
.badge.off { background: var(--surface-2); color: var(--muted); }
@media (prefers-color-scheme: dark) { .badge.on { background: #12391f; color: #6ee79a; } }

/* ---------- tìm tương tự ---------- */
.topic-search { display: flex; gap: 8px; margin: 0 0 10px; }
.topic-search input { flex: 1; }
.sim-banner { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; border-color: var(--accent); background: var(--accent-soft); }
.sim-banner .src { flex: 1; min-width: 220px; }
.sim-banner .src b { display: block; }
.simtag { font-size: 11px; font-weight: 600; color: var(--accent); white-space: nowrap; }

/* ---------- swipe file ---------- */
.swipe-bar { display: flex; flex-wrap: wrap; gap: 8px 12px; align-items: center; margin: 6px 0 10px; }
.swipe-bar select { min-width: 170px; }
.tagchips { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 12px; }
.wall { display: grid; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); gap: 10px; }
.wall .tile { position: relative; border-radius: 9px; overflow: hidden; background: var(--surface-2); cursor: pointer; aspect-ratio: 16 / 9; }
.wall .tile img, .wall .tile .ph { width: 100%; height: 100%; object-fit: cover; display: block; }
.wall .tile .xbadge { top: 6px; left: 6px; font-size: 12px; }
.wall .tile .cap {
  position: absolute; inset: auto 0 0 0; padding: 22px 8px 6px; color: #fff; font-size: 12px; line-height: 1.3;
  background: linear-gradient(transparent, rgba(0,0,0,.85)); opacity: 0; transition: opacity .15s;
}
.wall .tile:hover .cap, .wall .tile:focus-visible .cap { opacity: 1; }
.wall .tile .cap b { display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.wall .tile .coll { position: absolute; top: 6px; right: 6px; background: rgba(0,0,0,.7); color: #fff; font-size: 10.5px; padding: 1px 6px; border-radius: 4px; max-width: 60%; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
@media (hover: none) { .wall .tile .cap { opacity: 1; } }
.vtags { display: flex; flex-wrap: wrap; gap: 4px; }
.vtags span { font-size: 10.5px; background: var(--accent-soft); color: var(--accent); padding: 1px 6px; border-radius: 4px; }

/* ---------- đối thủ / thông báo ---------- */
.count { display: inline-block; min-width: 18px; padding: 0 5px; margin-left: 4px; border-radius: 99px; background: var(--hot); color: #fff; font-size: 11px; line-height: 18px; text-align: center; }
.card-head { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 8px; }
.card-head h2 { margin: 0; }
.card-head button { margin-left: auto; }
.alert { display: flex; gap: 10px; align-items: flex-start; padding: 10px 6px; border-top: 1px solid var(--border); }
.alert:first-child { border-top: 0; }
.alert.unread { background: var(--accent-soft); border-radius: 8px; }
.alert .abody { flex: 1; min-width: 0; display: flex; flex-direction: column; gap: 4px; }
.akind { flex-shrink: 0; font-size: 11px; font-weight: 700; padding: 2px 8px; border-radius: 6px; color: #fff; white-space: nowrap; }
.akind.k-outlier { background: var(--hot); }
.akind.k-title { background: var(--accent); }
.akind.k-thumbnail { background: var(--warm); }
.thumbcmp { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.thumbcmp figure { margin: 0; }
.thumbcmp img { width: 160px; aspect-ratio: 16/9; object-fit: cover; border-radius: 6px; display: block; background: var(--surface-2); }
.thumbcmp figcaption { font-size: 11px; color: var(--muted); }
.titlecmp { font-size: 13px; }
.titlecmp s, .chg s { color: var(--muted); }
.chg { padding: 6px 0; border-top: 1px solid var(--border); font-size: 13px; }
.delta-up { color: var(--good); }
.delta-down { color: var(--hot); }

@media (max-width: 640px) {
  main { padding: 12px 16px 50px; }
  .topbar { padding: 10px 16px; gap: 10px; }
  .top-right { margin-left: 0; width: 100%; }
  .quota { flex: 1; min-width: 0; }
}