:root {
  --bg: #f5f6f8; --card: #fff; --text: #1d2330; --muted: #6b7280; --line: #e3e6eb;
  --accent: #1f6feb; --ok: #1a7f37; --bad: #c62828; --warn: #b26a00;
}
* { box-sizing: border-box; }
body { margin: 0; background: var(--bg); color: var(--text); font: 14px/1.45 "Segoe UI", system-ui, -apple-system, Roboto, sans-serif; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
.top { display: flex; align-items: center; gap: 20px; padding: 10px 20px; background: #182031; color: #fff; flex-wrap: wrap; }
.top a { color: #cfd8e6; }
.top .brand { color: #fff; font-weight: 700; font-size: 16px; }
.top nav { display: flex; gap: 4px; flex-wrap: wrap; flex: 1; }
.top nav a { padding: 6px 10px; border-radius: 6px; }
.top nav a.on, .top nav a:hover { background: #2a3550; color: #fff; text-decoration: none; }
.top .me { display: flex; gap: 12px; align-items: center; }
main { padding: 20px; max-width: 1400px; margin: 0 auto; }
h1, h2 { margin: 6px 0 14px; }
h2 { font-size: 20px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px 16px; margin-bottom: 14px; }
.card.row, .filter { display: flex; flex-wrap: wrap; gap: 12px; align-items: flex-end; }
.filter { margin: 10px 0; }
.card.login { max-width: 360px; margin: 10vh auto; display: flex; flex-direction: column; gap: 12px; }
.card.narrow { max-width: 420px; display: flex; flex-direction: column; gap: 12px; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 12px; color: var(--muted); }
input, select, button, .btn { font: inherit; padding: 7px 10px; border: 1px solid #cfd4dc; border-radius: 6px; background: #fff; color: var(--text); }
button, .btn { cursor: pointer; background: #eef1f5; }
button:hover, .btn:hover { background: #e2e7ee; text-decoration: none; }
button.primary { background: var(--accent); border-color: var(--accent); color: #fff; font-weight: 600; }
button.primary:hover { background: #1958c4; }
button.small, .small-in { padding: 3px 8px; font-size: 12px; }
button.link { background: none; border: none; color: #cfd8e6; padding: 0; }
.btn.ghost { background: none; }
form.inline { display: inline-flex; gap: 4px; align-items: center; }
td.actions { display: flex; gap: 6px; flex-wrap: wrap; }
td.actions form { display: inline-flex; gap: 4px; }
table { width: 100%; border-collapse: collapse; background: var(--card); border: 1px solid var(--line); border-radius: 10px; overflow: hidden; margin-bottom: 10px; }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--line); text-align: left; vertical-align: middle; }
th { background: #f0f2f5; font-size: 12px; color: var(--muted); font-weight: 600; white-space: nowrap; }
tr:last-child td { border-bottom: none; }
tr.off td { color: #9aa1ab; }
tr.active td { background: #f0f8f2; }
td.n, th.n { text-align: right; font-variant-numeric: tabular-nums; }
.mono { font-family: Consolas, "Cascadia Mono", monospace; }
td.code b { letter-spacing: .5px; }
.muted { color: var(--muted); font-size: 12px; }
.msg { padding: 10px 14px; border-radius: 8px; margin-bottom: 12px; background: #eef4ff; border: 1px solid #c9dafc; }
.msg.ok { background: #edf8f0; border-color: #b9e2c4; }
.msg.error { background: #fdeeee; border-color: #f2c1c1; }
.badge { display: inline-block; padding: 2px 8px; border-radius: 999px; background: #eef1f5; font-size: 12px; }
.badge.ok { background: #e3f4e8; color: var(--ok); }
.badge.bad { background: #fbe4e4; color: var(--bad); }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin: 12px 0 16px; }
.stats div { background: var(--card); border: 1px solid var(--line); border-radius: 10px; padding: 14px; }
.stats b { display: block; font-size: 26px; }
.stats span { color: var(--muted); font-size: 12px; }
.stats .warn b { color: var(--warn); }
.quick { display: flex; gap: 8px; font-size: 12px; align-self: center; }
.settings-grid { display: flex; flex-wrap: wrap; gap: 14px; align-items: flex-start; }
.settings-grid .card { flex: 1 1 320px; }
.card h3 { margin: 0 0 6px; }
label.check { flex-direction: row; align-items: center; gap: 8px; font-size: 14px; color: var(--text); }
.qrprev svg { width: 220px; height: 220px; background: #fff; }
@media (max-width: 760px) {
  main { padding: 12px; }
  table { display: block; overflow-x: auto; white-space: nowrap; }
}
/* ---- them cho quan tri cua hang ---- */
.top { background: #16202e; }
.top .brand::before { content: "DF"; display: inline-grid; place-items: center; width: 26px; height: 26px; margin-right: 8px; border-radius: 4px; background: #b8321c; color: #fbe9dc; font: 700 11px/1 Georgia, serif; vertical-align: middle; }
.thumb { width: 54px; height: 54px; object-fit: cover; border-radius: 8px; background: #eef1f5; display: block; }
.imgs { display: flex; flex-wrap: wrap; gap: 12px; }
.imgs figure { margin: 0; width: 140px; }
.imgs img { width: 140px; height: 140px; object-fit: cover; border-radius: 10px; border: 1px solid var(--line); }
.imgs figcaption { display: flex; gap: 4px; margin-top: 4px; }
.vt input { width: 100%; min-width: 70px; padding: 5px 7px; }
.vt td { padding: 6px; }
.grid2 { display: grid; grid-template-columns: 1.3fr .7fr; gap: 16px; align-items: start; }
.st { display: inline-block; padding: 3px 9px; border-radius: 999px; font-size: 12px; background: #eef1f5; }
.st.awaiting_payment, .st.pending { background: #fff4d6; color: #7a5200; }
.st.confirmed, .st.shipping { background: #e3ecff; color: #17407f; }
.st.completed { background: #e3f4e8; color: #1a7f37; }
.st.cancelled { background: #fbe4e4; color: #c62828; }
textarea { font: inherit; padding: 7px 10px; border: 1px solid #cfd4dc; border-radius: 6px; width: 100%; }
.card label.full, .card label.full input, .card label.full textarea, .card label.full select { width: 100%; }
@media (max-width: 900px) { .grid2 { grid-template-columns: 1fr; } }