/* ================= Token màu (sáng / tối) ================= */
:root {
  color-scheme: light;
  --page: #f4f6fa;
  --surface: #ffffff;
  --chart-surface: #fcfcfb;
  --ink: #0b0b0b;
  --ink-2: #52514e;
  --muted: #6f6d68;
  --grid: #e1e0d9;
  --axis: #c3c2b7;
  --border: rgba(11, 11, 11, .10);
  --brand: #1f36c7;
  --brand-ink: #ffffff;
  --series-offtake: #2a78d6;
  --series-target: #eb6834;
  --series-ly: #898781;
  --series-nso: #4a3aa7;
  --good: #006300;
  --pos-bg: #dcf2dc;
  --neg-bg: #fbe1e1;
  --head: #0d3b8c;
  --slicer-bg: #cfe3fb;
  --bad: #d03b3b;
  --warn-bg: #fff4d6;
  --err-bg: #fdeaea;
  --shadow: 0 1px 2px rgba(0, 0, 0, .06), 0 2px 8px rgba(0, 0, 0, .04);
}
@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --page: #0d0d0d;
    --surface: #1a1a19;
    --chart-surface: #1a1a19;
    --ink: #ffffff;
    --ink-2: #c3c2b7;
    --muted: #9a988f;
    --grid: #2c2c2a;
    --axis: #383835;
    --border: rgba(255, 255, 255, .10);
    --brand: #4f63e6;
    --series-offtake: #3987e5;
    --series-target: #d95926;
    --series-ly: #898781;
    --series-nso: #9085e9;
    --good: #0ca30c;
    --pos-bg: #173d17;
    --neg-bg: #4a1c1c;
    --head: #1b3f86;
    --slicer-bg: #1d2735;
    --bad: #e66767;
    --warn-bg: #3a2f10;
    --err-bg: #3a1616;
    --shadow: none;
  }
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
html, body { margin: 0; }
body {
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-size: 14px; color: var(--ink); background: var(--page);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--brand); text-decoration: none; }
a:hover { text-decoration: underline; }
.muted { color: var(--muted); }
.small { font-size: 12px; }
.num { font-variant-numeric: tabular-nums; }

/* ================= Thanh trên ================= */
.topbar {
  display: flex; align-items: center; gap: 24px; padding: 0 20px; height: 56px;
  background: var(--brand); color: var(--brand-ink); position: sticky; top: 0; z-index: 10;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 600; }
.logo {
  display: inline-grid; place-items: center; width: 32px; height: 32px; border-radius: 8px;
  background: rgba(255, 255, 255, .18); color: #fff; font-weight: 700; font-size: 13px;
}
.logo.big { width: 48px; height: 48px; font-size: 18px; background: var(--brand); }
.nav { display: flex; gap: 4px; }
.nav a { color: rgba(255, 255, 255, .85); padding: 8px 12px; border-radius: 6px; }
.nav a.active, .nav a:hover { background: rgba(255, 255, 255, .16); color: #fff; text-decoration: none; }
.user-box { margin-left: auto; display: flex; align-items: center; gap: 12px; font-size: 13px; }
.user-box .link { color: rgba(255, 255, 255, .85); }
.role-chip { background: rgba(255, 255, 255, .2); padding: 2px 8px; border-radius: 10px; font-size: 11px; }

.page { padding: 16px 20px 40px; max-width: 1440px; margin: 0 auto; }

/* ================= Đăng nhập ================= */
.auth-page { min-height: 100vh; display: grid; place-items: center; padding: 16px; }
.auth-card {
  width: 100%; max-width: 380px; background: var(--surface); border-radius: 12px;
  padding: 28px; box-shadow: var(--shadow); border: 1px solid var(--border);
}
.auth-head { text-align: center; margin-bottom: 16px; }
.auth-head h1 { font-size: 20px; margin: 12px 0 4px; }
form label { display: block; margin: 12px 0; font-weight: 600; font-size: 13px; }
input, select, textarea {
  width: 100%; margin-top: 4px; padding: 8px 10px; font: inherit; color: var(--ink);
  background: var(--surface); border: 1px solid var(--axis); border-radius: 6px;
}
input:focus, select:focus { outline: 2px solid var(--brand); outline-offset: 1px; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px;
  padding: 8px 14px; border-radius: 6px; border: 1px solid var(--axis);
  background: var(--surface); color: var(--ink); font: inherit; font-weight: 600; cursor: pointer;
}
.btn:hover { border-color: var(--brand); }
.btn.primary { background: var(--brand); color: #fff; border-color: var(--brand); }
.btn.full { width: 100%; margin-top: 8px; }
.btn.sm { padding: 4px 10px; font-size: 12px; }
.alert { padding: 10px 12px; border-radius: 6px; margin: 8px 0; font-size: 13px; }
.alert.error { background: var(--err-bg); color: var(--bad); }
.alert.warn { background: var(--warn-bg); }

/* ================= Bộ lọc ================= */
.filters {
  display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end;
  background: var(--surface); padding: 12px 16px; border-radius: 10px;
  border: 1px solid var(--border); box-shadow: var(--shadow); margin-bottom: 16px;
}
.filters label { font-size: 12px; font-weight: 600; color: var(--ink-2); margin: 0; min-width: 150px; }
.filters .meta { margin-left: auto; font-size: 12px; color: var(--muted); text-align: right; }

/* ================= Thẻ KPI ================= */
.kpis { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; margin-bottom: 16px; }
@media (max-width: 1000px) { .kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 520px) { .kpis { grid-template-columns: 1fr; } }
.kpi {
  background: var(--surface); border-radius: 10px; padding: 14px 16px;
  border: 1px solid var(--border); box-shadow: var(--shadow);
}
.kpi .label { font-size: 12px; color: var(--ink-2); font-weight: 600; }
.kpi .value { font-size: 26px; font-weight: 700; margin: 6px 0 2px; font-variant-numeric: tabular-nums; }
.kpi .unit { font-size: 12px; color: var(--muted); font-weight: 400; margin-left: 4px; }
.kpi .sub { font-size: 12px; color: var(--ink-2); font-variant-numeric: tabular-nums; }
.delta.up { color: var(--good); font-weight: 600; }
.delta.down { color: var(--bad); font-weight: 600; }

/* ================= Khối biểu đồ / bảng ================= */
.grid-2 { display: grid; grid-template-columns: 2fr 1fr; gap: 16px; margin-bottom: 16px; }
@media (max-width: 1000px) { .grid-2 { grid-template-columns: 1fr; } }
.card {
  background: var(--surface); border-radius: 10px; padding: 14px 16px;
  border: 1px solid var(--border); box-shadow: var(--shadow); min-width: 0;
}
.card-head { display: flex; align-items: center; gap: 12px; margin-bottom: 8px; }
.card-head h2 { font-size: 15px; margin: 0; }
.card-head .spacer { flex: 1; }
.chart { width: 100%; height: 320px; }
.legend { display: flex; gap: 16px; font-size: 12px; color: var(--ink-2); }
.legend i { display: inline-block; width: 14px; height: 3px; border-radius: 2px; vertical-align: middle; margin-right: 6px; }
.note { font-size: 12px; color: var(--muted); margin-top: 6px; }
.loading { opacity: .5; pointer-events: none; transition: opacity .15s; }

/* Tabulator: dùng token màu của site */
.tabulator { font-size: 13px; border: 1px solid var(--border); background: var(--surface); }
.tabulator .tabulator-header, .tabulator .tabulator-header .tabulator-col { background: var(--page); color: var(--ink); }
.tabulator-row { background: var(--surface); color: var(--ink); }
.tabulator-row.tabulator-row-even { background: var(--chart-surface); }
.tabulator-row .tabulator-cell { border-right-color: var(--border); }
.tabulator-row.tabulator-group { background: var(--page); color: var(--ink); font-weight: 600; }
.tabulator .tabulator-footer { background: var(--page); color: var(--ink); }
.tabulator-row.tabulator-calcs { background: var(--page) !important; font-weight: 600; }

/* ================= Trang quản trị ================= */
.admin-layout { display: grid; grid-template-columns: 1.3fr 1fr; gap: 16px; }
@media (max-width: 1100px) { .admin-layout { grid-template-columns: 1fr; } }
table.simple { width: 100%; border-collapse: collapse; font-size: 13px; }
table.simple th, table.simple td { padding: 8px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
table.simple tr.selected td { background: var(--page); }
table.simple tbody tr { cursor: pointer; }
.chip { display: inline-block; padding: 1px 8px; border-radius: 10px; font-size: 11px; border: 1px solid var(--border); margin: 1px; }
.chip.off { color: var(--bad); }
.chip.lock { color: var(--bad); font-weight: 600; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 0 12px; }
.scope-box select[multiple] { height: 150px; }
.check { display: flex; gap: 8px; align-items: center; font-weight: 400; }
.check input { width: auto; margin: 0; }
.toast {
  position: fixed; right: 20px; bottom: 20px; padding: 10px 16px; border-radius: 8px;
  background: var(--ink); color: var(--surface); box-shadow: var(--shadow); display: none; z-index: 50;
}
.toast.show { display: block; }
.toast.error { background: var(--bad); color: #fff; }
.tabs { display: flex; gap: 4px; margin-bottom: 12px; }
.tabs button { background: none; border: none; padding: 8px 12px; font: inherit; color: var(--ink-2); cursor: pointer; border-bottom: 2px solid transparent; }
.tabs button.active { color: var(--brand); border-bottom-color: var(--brand); font-weight: 600; }
#panel h2 { font-size: 16px; margin: 4px 0 10px; }
#panel hr { border: none; border-top: 1px solid var(--border); margin: 18px 0; }
.scope-box label { font-weight: 600; font-size: 13px; }
.tabulator-row.tabulator-group span { color: var(--muted); margin-left: 6px; }


/* ================= Trang báo cáo v2 (giống Power BI) ================= */
.page.wide { max-width: 1800px; }
.rpt-head {
  display: flex; align-items: center; gap: 16px; background: var(--head); color: #fff;
  padding: 10px 16px; border-radius: 8px 8px 0 0;
}
.rpt-head h1 { font-size: 17px; margin: 0; letter-spacing: .5px; }
.rpt-head .meta { margin-left: auto; font-size: 12px; opacity: .85; }
.btn.light { background: #fff; color: var(--head); border-color: #fff; }
.slicers {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); gap: 8px 10px;
  background: var(--slicer-bg); padding: 10px 16px 12px; border-radius: 0 0 8px 8px; margin-bottom: 12px;
}
.slicers label { font-size: 11px; font-weight: 600; color: var(--ink-2); margin: 0; }
.slicers label.wide { grid-column: span 2; }
.slicers select, .slicers input { padding: 5px 6px; font-size: 12px; margin-top: 2px; }

.cards8 { display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); gap: 10px; margin-bottom: 12px; }
@media (max-width: 1300px) { .cards8 { grid-template-columns: repeat(4, minmax(0, 1fr)); } }
@media (max-width: 600px)  { .cards8 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
.kpi2 {
  background: var(--surface); border: 1px solid var(--border); border-radius: 8px; box-shadow: var(--shadow);
  padding: 12px 10px; text-align: center; min-width: 0;
}
.kpi2 .value { font-size: 24px; font-weight: 600; font-variant-numeric: tabular-nums; white-space: nowrap; }
.kpi2 .label { font-size: 12px; color: var(--muted); margin-top: 4px; }
.t-pos { color: var(--good); }
.t-neg { color: var(--bad); }

.rpt-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 12px; }
@media (max-width: 1100px) { .rpt-grid, .rpt-grid.detail { grid-template-columns: minmax(0, 1fr); grid-template-areas: none; } }
.rpt-grid.detail {
  grid-template-columns: minmax(0, 1.3fr) minmax(0, 1fr);
  grid-template-areas: "daily nso" "om sr" "cat sr";
}
.rpt-grid.detail .area-daily { grid-area: daily; }
.rpt-grid.detail .area-nso   { grid-area: nso; }
.rpt-grid.detail .area-om    { grid-area: om; }
.rpt-grid.detail .area-sr    { grid-area: sr; }
.rpt-grid.detail .area-cat   { grid-area: cat; }
@media (max-width: 1100px) { .rpt-grid.detail > .card { grid-area: auto; } }

/* Ô matrix: màu nền kèm dấu +/- (không chỉ dựa vào màu) */
.tabulator .tabulator-cell.c-pos { background: var(--pos-bg); color: var(--good); }
.tabulator .tabulator-cell.c-neg { background: var(--neg-bg); color: var(--bad); }
.tabulator .tabulator-cell.c-mtd { color: var(--series-offtake); font-weight: 600; }
.tabulator .tabulator-cell.c-tgt { color: var(--series-target); }
.rpt-grid .tabulator { font-size: 12px; }
.rpt-grid .tabulator .tabulator-header .tabulator-col .tabulator-col-title { white-space: normal; }
.tabulator-row .tabulator-cell { padding: 5px 6px; }
.tabulator .tabulator-footer .tabulator-calcs-holder { background: var(--page); border-top: 2px solid var(--axis); }

/* Bảng chiều cao cố định: phần trống bên dưới cùng màu nền thẻ (mặc định Tabulator là xám) */
.tabulator .tabulator-tableholder { background: var(--surface); }