:root {
  color-scheme: light;
  --bg: #f5f5f3;
  --surface: #fcfcfb;
  --surface-2: #f0efec;
  --border: #e2e1dc;
  --text: #0b0b0b;
  --text-2: #52514e;
  --muted: #7a7973;
  /* Màu thương hiệu X3SALES: xanh dương (chữ logo) + xanh lá (vòng tròn logo) */
  --accent: #0b6fc1;
  --accent-text: #fff;
  --accent-soft: #e6f0fa;
  --brand-green: #04874a;
  --series-1: #0b6fc1;
  --grid: #e9e8e3;
  --good: #04874a;
  --bad: #c0352f;
  --warn-bg: #fff4d6;
  --warn: #a35f00;
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    color-scheme: dark;
    --bg: #121211;
    --surface: #1a1a19;
    --surface-2: #232321;
    --border: #2f2f2c;
    --text: #f0efec;
    --text-2: #c3c2b7;
    --muted: #8f8e86;
    --accent: #3b8fe0;
    --accent-soft: #14273b;
    --brand-green: #3dba74;
    --series-1: #4a9be6;
    --grid: #2a2a28;
    --good: #3dba74;
    --bad: #ef6b66;
    --warn-bg: #3a3017;
    --warn: #e8a33a;
  }
}
:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #121211; --surface: #1a1a19; --surface-2: #232321; --border: #2f2f2c;
  --text: #f0efec; --text-2: #c3c2b7; --muted: #8f8e86; --accent: #3b8fe0; --accent-soft: #14273b;
  --brand-green: #3dba74; --series-1: #4a9be6; --grid: #2a2a28; --good: #3dba74; --bad: #ef6b66; --warn-bg: #3a3017; --warn: #e8a33a;
}

* { box-sizing: border-box; }
[hidden] { display: none !important; }
body {
  margin: 0; background: var(--bg); color: var(--text);
  font: 14px/1.5 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
}
h1 { font-size: 22px; margin: 0 0 4px; }
h2 { font-size: 16px; margin: 0 0 12px; }
h3 { font-size: 15px; margin: 0; }
a { color: var(--accent); }
.muted { color: var(--muted); }
.mono { font-variant-numeric: tabular-nums; font-family: ui-monospace, Consolas, monospace; font-size: 13px; }
.container { max-width: 1200px; margin: 0 auto; padding: 20px 16px 60px; }

/* Thanh trên cùng */
.topbar {
  position: sticky; top: 0; z-index: 10; display: flex; align-items: center; gap: 20px;
  padding: 10px 16px; background: var(--surface); border-bottom: 1px solid var(--border); flex-wrap: wrap;
}
.topbar { border-image: linear-gradient(90deg, var(--accent), var(--brand-green)) 0 0 1 0; border-bottom-width: 2px; }
.brand { display: flex; align-items: center; gap: 8px; font-weight: 800; font-size: 17px; color: var(--accent); letter-spacing: .2px; }
.brand img { width: 30px; height: 30px; }
.brand span { color: var(--brand-green); }
nav { display: flex; gap: 4px; flex: 1; flex-wrap: wrap; }
nav a {
  padding: 6px 12px; border-radius: 8px; color: var(--text-2); text-decoration: none; font-weight: 500;
}
nav a:hover { background: var(--surface-2); }
nav a.active { background: var(--accent-soft); color: var(--accent); }
.user { display: flex; align-items: center; gap: 8px; color: var(--text-2); font-size: 13px; }
.user form { margin: 0; }

/* Nút, ô nhập */
.btn {
  display: inline-flex; align-items: center; gap: 6px; border: 1px solid transparent; border-radius: 8px;
  background: var(--accent); color: var(--accent-text); padding: 8px 14px; font: inherit; font-weight: 500;
  cursor: pointer; text-decoration: none; white-space: nowrap;
}
.btn:hover { filter: brightness(1.08); }
.btn:disabled { opacity: .55; cursor: default; }
.btn.ghost { background: transparent; color: var(--text); border-color: var(--border); }
.btn.ghost:hover { background: var(--surface-2); filter: none; }
.btn.danger { background: transparent; color: var(--bad); border-color: var(--border); }
.btn.sm { padding: 4px 10px; font-size: 13px; }
input, select {
  font: inherit; color: var(--text); background: var(--surface); border: 1px solid var(--border);
  border-radius: 8px; padding: 7px 10px;
}
input:focus, select:focus, .btn:focus-visible { outline: 2px solid var(--accent); outline-offset: 1px; }

.badge {
  display: inline-block; padding: 1px 8px; border-radius: 999px; font-size: 12px; font-weight: 600;
  background: var(--surface-2); color: var(--text-2); border: 1px solid var(--border);
}
.badge.team { color: var(--accent); }
.badge.root { color: var(--warn); }
.badge.err { color: var(--bad); }
.badge.ok { color: var(--good); }
.badge.warn { color: var(--warn); }

/* Khối */
.card { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 16px; }
.stack > * + * { margin-top: 16px; }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.spread { justify-content: space-between; }
.page-head { display: flex; justify-content: space-between; align-items: flex-end; gap: 12px; flex-wrap: wrap; margin-bottom: 16px; }
.note { background: var(--warn-bg); border-radius: 8px; padding: 10px 12px; color: var(--text); }

/* Bộ lọc */
.filters { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 16px; }
.seg { display: inline-flex; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; background: var(--surface); }
.seg button { border: 0; background: transparent; color: var(--text-2); padding: 7px 12px; font: inherit; cursor: pointer; }
.seg button + button { border-left: 1px solid var(--border); }
.seg button.on { background: var(--accent-soft); color: var(--accent); font-weight: 600; }

/* Ô số liệu */
.kpis { display: grid; grid-template-columns: repeat(auto-fill, minmax(160px, 1fr)); gap: 12px; margin-bottom: 16px; }
.kpi { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 12px 14px; }
.kpi .label { color: var(--text-2); font-size: 13px; }
.kpi .value { font-size: 22px; font-weight: 650; font-variant-numeric: tabular-nums; margin-top: 2px; }
.kpi.hero { border-top: 3px solid var(--accent); }
.kpi.hero .value { font-size: 26px; color: var(--accent); }

.chart-wrap { position: relative; height: 280px; }

/* Bảng */
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-variant-numeric: tabular-nums; }
th, td { padding: 9px 10px; border-bottom: 1px solid var(--border); text-align: left; white-space: nowrap; }
th { color: var(--text-2); font-weight: 600; font-size: 13px; position: sticky; top: 0; background: var(--surface); }
th.sortable { cursor: pointer; user-select: none; }
th.sortable:hover { color: var(--text); }
td.num, th.num { text-align: right; }
tbody tr:hover { background: var(--surface-2); }
tr.clickable { cursor: pointer; }
td .sub { display: block; color: var(--muted); font-size: 12px; }
.empty { text-align: center; padding: 40px 16px; color: var(--muted); }

/* Hộp thoại, thông báo */
.modal { position: fixed; inset: 0; background: rgba(0,0,0,.45); display: flex; align-items: flex-start; justify-content: center; padding: 40px 16px; z-index: 50; overflow-y: auto; }
.modal[hidden] { display: none; }
.modal-box { background: var(--surface); border-radius: 12px; width: min(960px, 100%); padding: 16px; border: 1px solid var(--border); }
.modal-head { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 12px; }
.toast { position: fixed; bottom: 20px; left: 50%; transform: translateX(-50%); background: var(--text); color: var(--bg); padding: 10px 16px; border-radius: 8px; z-index: 60; max-width: calc(100% - 32px); }
.toast.err { background: var(--bad); color: #fff; }

/* Đăng nhập */
.login { max-width: 420px; margin: 12vh auto 0; text-align: center; }
.login .card { padding: 32px 24px; }
.login .logo { width: 200px; max-width: 70%; height: auto; margin: 0 auto; display: block; }
.login .card { border-top: 4px solid var(--brand-green); }
.login-error {
  padding: 10px 12px; border-radius: 8px; font-size: 14px; text-align: left;
  color: var(--bad); border: 1px solid var(--bad); background: var(--surface-2);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) .login .logo { background: #fff; border-radius: 12px; padding: 12px; }
}
:root[data-theme="dark"] .login .logo { background: #fff; border-radius: 12px; padding: 12px; }

.keybox { font-family: ui-monospace, Consolas, monospace; background: var(--surface-2); padding: 10px; border-radius: 8px; word-break: break-all; }

@media (max-width: 900px) {
  .brand { flex: 1; }
  nav { order: 3; flex-basis: 100%; flex-wrap: nowrap; overflow-x: auto; }
}
@media (max-width: 640px) {
  .topbar { gap: 8px; }
  .user #user-email { display: none; }
  .kpi .value { font-size: 18px; }
}