:root {
  --bg: #f4f5f7;
  --panel: #ffffff;
  --text: #111827;
  --muted: #6b7280;
  --line: #e5e7eb;
  --brand: #111827;
  --accent: #2563eb;
  --accent-text: #ffffff;
  --danger: #dc2626;
  --danger-bg: #fef2f2;
  --ok: #059669;
  --ok-bg: #ecfdf5;
  --warn: #b45309;
  --warn-bg: #fffbeb;
  --radius: 10px;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0f1115;
    --panel: #181b22;
    --text: #e5e7eb;
    --muted: #9ca3af;
    --line: #2a2f3a;
    --brand: #0b0d11;
    --accent: #3b82f6;
    --danger: #f87171;
    --danger-bg: #2a1517;
    --ok: #34d399;
    --ok-bg: #11241d;
    --warn: #fbbf24;
    --warn-bg: #2a2110;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body { margin: 0; background: var(--bg); color: var(--text); font: 15px/1.5 "Segoe UI", system-ui, -apple-system, Arial, sans-serif; }
button, input, select, textarea { font: inherit; color: inherit; }
a { color: var(--accent); }
[hidden] { display: none !important; }

/* khung */
.topbar { position: sticky; top: 0; z-index: 20; background: var(--brand); color: #fff; display: flex; align-items: center; gap: 16px; padding: 0 16px; min-height: 52px; flex-wrap: wrap; }
.topbar .brand { font-weight: 700; letter-spacing: .2px; }
.topbar nav { display: flex; gap: 4px; flex: 1; }
.topbar nav a { color: #cbd5e1; text-decoration: none; padding: 14px 12px; border-bottom: 3px solid transparent; }
.topbar nav a.on { color: #fff; border-bottom-color: #facc15; }
.topbar .who { color: #cbd5e1; font-size: 14px; display: flex; gap: 10px; align-items: center; }
.topbar .who button { background: transparent; border: 1px solid #475569; color: #e2e8f0; border-radius: 6px; padding: 4px 10px; cursor: pointer; }
@media (max-width: 640px) {
  .topbar { gap: 4px 10px; padding: 6px 12px 0; }
  .topbar .who { margin-left: auto; }
  .topbar nav { order: 3; flex-basis: 100%; }
  .topbar nav a { padding: 8px 10px; }
  main { padding: 12px; }
}
main { max-width: 1100px; margin: 0 auto; padding: 16px; }
h2 { margin: 4px 0 12px; font-size: 20px; }
h3 { margin: 16px 0 8px; font-size: 16px; }
.muted { color: var(--muted); }
.small { font-size: 13px; }

.banner { background: var(--danger); color: #fff; padding: 8px 16px; font-weight: 600; }
.banner div + div { margin-top: 2px; }

/* chip lọc shop */
.chips { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 12px; }
.chip { display: inline-flex; align-items: center; gap: 6px; padding: 5px 12px; border-radius: 999px; border: 1px solid var(--line); background: var(--panel); cursor: pointer; user-select: none; }
.chip .dot { width: 10px; height: 10px; border-radius: 50%; }
.chip .n { background: var(--danger); color: #fff; border-radius: 999px; font-size: 12px; padding: 0 7px; min-width: 20px; text-align: center; }
.chip.on { border-color: var(--accent); box-shadow: 0 0 0 1px var(--accent) inset; font-weight: 600; }
.chip.off { opacity: .5; }

/* nút */
.btn { border: 1px solid var(--line); background: var(--panel); border-radius: 8px; padding: 6px 12px; cursor: pointer; white-space: nowrap; }
.btn:hover:not(:disabled) { border-color: var(--accent); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.btn.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); }
.btn.danger { background: var(--danger); border-color: var(--danger); color: #fff; }
.btn.sm { padding: 3px 9px; font-size: 13px; }
input[type=text], input[type=password], input[type=number], select, textarea { border: 1px solid var(--line); background: var(--panel); border-radius: 8px; padding: 7px 10px; max-width: 100%; }
textarea { width: 100%; resize: vertical; min-height: 54px; }

.toolbar { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 12px; }
.toolbar .grow { flex: 1; }
.tip { background: var(--warn-bg); color: var(--warn); border-radius: var(--radius); padding: 8px 12px; font-size: 13px; margin-bottom: 12px; display: flex; gap: 10px; align-items: flex-start; }
.tip button { margin-left: auto; background: none; border: 0; cursor: pointer; color: inherit; font-size: 16px; }

/* thẻ đánh giá */
.card { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; margin-bottom: 12px; }
.card.bad { border-left: 4px solid var(--danger); }
.card.good { border-left: 4px solid var(--ok); }
.card .head { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.stars { color: var(--danger); letter-spacing: 1px; font-size: 17px; }
.stars.hi { color: var(--ok); }
.shoptag { display: inline-flex; align-items: center; gap: 5px; font-size: 12px; font-weight: 600; padding: 2px 9px; border-radius: 999px; color: #fff; }
.card .meta { color: var(--muted); font-size: 13px; }
.card .content { margin: 8px 0; font-size: 16px; }
.card .row { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-top: 10px; }
.card .shot { width: 120px; max-height: 90px; object-fit: cover; object-position: top; border: 1px solid var(--line); border-radius: 6px; cursor: zoom-in; background: #fff; }
.card .media { display: flex; gap: 6px; flex-wrap: wrap; justify-content: flex-end; max-width: 260px; }
.card .media .shot { width: 80px; height: 80px; max-height: none; object-fit: cover; }
.card .layout { display: grid; grid-template-columns: 1fr auto; gap: 12px; }
@media (max-width: 640px) { .card .layout { grid-template-columns: 1fr; } .card .shot { width: 100%; max-height: 140px; } }
.phone { margin-top: 10px; background: var(--ok-bg); border: 1px solid var(--ok); border-radius: 8px; padding: 8px 12px; display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.phone b { font-size: 20px; letter-spacing: 1px; }
.phone.warn { background: var(--warn-bg); border-color: var(--warn); color: var(--warn); }
.checkline { margin-top: 8px; font-size: 13px; padding: 5px 10px; border-radius: 6px; background: var(--bg); }
.checkline.up { background: var(--ok-bg); color: var(--ok); font-weight: 600; }
.checkline.gone { background: var(--warn-bg); color: var(--warn); font-weight: 600; }
.hist { margin-top: 8px; font-size: 13px; border-top: 1px dashed var(--line); padding-top: 8px; }
.hist div { padding: 2px 0; display: flex; gap: 8px; flex-wrap: wrap; }

.badge { display: inline-block; font-size: 12px; padding: 1px 8px; border-radius: 999px; background: var(--bg); border: 1px solid var(--line); }
.badge.ok { background: var(--ok-bg); color: var(--ok); border-color: transparent; }
.badge.bad { background: var(--danger-bg); color: var(--danger); border-color: transparent; }
.badge.warn { background: var(--warn-bg); color: var(--warn); border-color: transparent; }
.empty { text-align: center; color: var(--muted); padding: 40px 10px; }
.spin { display: inline-block; width: 13px; height: 13px; border: 2px solid var(--line); border-top-color: var(--accent); border-radius: 50%; animation: sp .8s linear infinite; vertical-align: -2px; margin-right: 6px; }
@keyframes sp { to { transform: rotate(360deg); } }

/* tab Đơn to: bước 1 chọn shop, bước 2 gõ mã */
.steps { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 12px 14px; margin-bottom: 14px; display: grid; gap: 12px; }
.step { display: flex; gap: 10px; align-items: flex-start; }
.step .grow { flex: 1; min-width: 0; }
.stepno { flex: none; width: 24px; height: 24px; border-radius: 50%; background: var(--accent); color: #fff; font-size: 13px; font-weight: 700; display: flex; align-items: center; justify-content: center; margin-top: 1px; }
.shoppick { display: grid; gap: 6px; margin-top: 6px; }
.pickrow { display: flex; gap: 6px; flex-wrap: wrap; align-items: center; }
.picklabel { width: 52px; flex: none; }
.pick { display: inline-flex; align-items: center; gap: 6px; padding: 6px 12px; border-radius: 999px; border: 1px solid var(--line); background: var(--bg); cursor: pointer; }
.pick:hover { border-color: var(--accent); }
.pick.on { border-color: var(--accent); background: var(--accent); color: var(--accent-text); font-weight: 600; }
.pick .dot { width: 9px; height: 9px; border-radius: 50%; }
.pick.on .dot { box-shadow: 0 0 0 2px #fff; }
.orderinput { text-transform: uppercase; letter-spacing: .3px; }
.orderinput::placeholder { text-transform: none; letter-spacing: 0; }
.orderinput:disabled { opacity: .6; cursor: not-allowed; }
@media (max-width: 640px) { .picklabel { width: 100%; } }

/* nhắn tin cho khách */
.chat { margin-top: 10px; border: 1px solid var(--line); border-radius: 8px; padding: 10px; background: var(--bg); }
.chathead { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.chathead .btn { margin-left: auto; }
.chat .msgs { max-height: 260px; overflow-y: auto; display: flex; flex-direction: column; gap: 6px; margin: 8px 0; }
.msg { max-width: 78%; padding: 6px 10px; border-radius: 10px; font-size: 14px; white-space: pre-wrap; word-break: break-word; }
.msg span { display: block; font-size: 11px; color: var(--muted); margin-top: 2px; }
.msg.buyer { align-self: flex-start; background: var(--panel); border: 1px solid var(--line); }
.msg.shop { align-self: flex-end; background: var(--ok-bg); }
.msg.system { align-self: center; background: none; color: var(--muted); font-size: 12px; text-align: center; }
.chat textarea { min-height: 60px; }

/* huỷ đơn */
.searchbox { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 14px; }
.searchbox input { flex: 1; min-width: 200px; }
.kv { display: grid; grid-template-columns: 130px 1fr; gap: 4px 12px; margin: 10px 0; }
.kv dt { color: var(--muted); }
.kv dd { margin: 0; }
.shots { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 10px; }
.shots figure { margin: 0; }
.shots img { width: 300px; max-width: 100%; border: 1px solid var(--line); border-radius: 6px; cursor: zoom-in; background: #fff; }
.shots figcaption { font-size: 12px; color: var(--muted); }
.result { padding: 10px 12px; border-radius: 8px; margin-top: 10px; font-weight: 600; }
.result.ok { background: var(--ok-bg); color: var(--ok); }
.result.bad { background: var(--danger-bg); color: var(--danger); }
.result.warn { background: var(--warn-bg); color: var(--warn); }

/* bảng */
.tablewrap { overflow-x: auto; background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { text-align: left; padding: 8px 10px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--muted); font-weight: 600; font-size: 13px; white-space: nowrap; }
tr:last-child td { border-bottom: 0; }
tr.click { cursor: pointer; }
tr.click:hover { background: var(--bg); }
.tabs { display: flex; gap: 4px; flex-wrap: wrap; margin-bottom: 14px; border-bottom: 1px solid var(--line); }
.tabs button { background: none; border: 0; padding: 8px 14px; cursor: pointer; border-bottom: 3px solid transparent; color: var(--muted); }
.tabs button.on { color: var(--text); border-bottom-color: var(--accent); font-weight: 600; }
.formrow { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin: 10px 0; }
.checks { display: flex; gap: 10px; flex-wrap: wrap; }
.checks label { display: inline-flex; gap: 4px; align-items: center; }
.panel { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 14px; margin-bottom: 14px; }
.setgrid { display: grid; grid-template-columns: minmax(180px, 1fr) 140px; gap: 8px 12px; align-items: center; max-width: 520px; }
.actions { display: flex; gap: 6px; flex-wrap: wrap; }

/* quảng cáo */
.tiles { display: grid; grid-template-columns: repeat(auto-fill, minmax(165px, 1fr)); gap: 10px; margin-bottom: 12px; }
.tile { background: var(--panel); border: 1px solid var(--line); border-radius: var(--radius); padding: 10px 12px; }
.tile .tl { color: var(--muted); font-size: 13px; }
.tile .tv { font-size: 20px; font-weight: 700; font-variant-numeric: tabular-nums; }
.tile .ts { color: var(--muted); font-size: 12px; }
.tile.bad { border-left: 4px solid var(--danger); }
.tile.warn { border-left: 4px solid var(--warn); }
.syncpanel { padding: 10px 14px; }
.syncrow { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; padding: 3px 0; }
.chip .cnt { color: var(--muted); font-size: 12px; }
.rules summary { cursor: pointer; }
.rules .setgrid { max-width: 560px; grid-template-columns: minmax(220px, 1fr) 140px; }
table.ads td.r, table.ads th.r, table.mini .r { text-align: right; font-variant-numeric: tabular-nums; white-space: nowrap; }
table.ads th.sortable { cursor: pointer; user-select: none; }
table.ads th.sortable:hover { color: var(--text); }
table.ads td.vt { min-width: 220px; max-width: 340px; }
table.ads td.vt a { color: var(--text); text-decoration: none; }
table.ads td.vt a:hover { color: var(--accent); text-decoration: underline; }
table.ads tr.days td { background: var(--bg); }
table.ads .badge { white-space: nowrap; }
table.ads tr.picked td { background: var(--warn-bg); }
table.ads td.exc { white-space: nowrap; }
table.ads td.exc .badge { margin-right: 4px; }
table.ads td.exc .errline { white-space: normal; max-width: 220px; }
.camphead { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; padding: 10px 14px; }
.btn.danger-o { color: var(--danger); border-color: var(--danger); }
.pickbar { position: sticky; top: 52px; z-index: 5; display: flex; gap: 8px; align-items: center; flex-wrap: wrap; background: var(--warn-bg); border: 1px solid var(--warn); border-radius: var(--radius); padding: 8px 12px; margin-bottom: 10px; }
table.mini { font-size: 13px; width: auto; }
table.mini th, table.mini td { padding: 3px 10px; }
.okc { color: var(--ok); font-weight: 600; }
.badc { color: var(--danger); font-weight: 600; }
main:has(table.ads) { max-width: 1400px; }

/* đăng nhập */
.login { max-width: 360px; margin: 12vh auto; padding: 24px; background: var(--panel); border: 1px solid var(--line); border-radius: 14px; }
.login h1 { margin: 0 0 4px; font-size: 22px; }
.login input { width: 100%; margin: 6px 0; }
.login .btn { width: 100%; margin-top: 8px; padding: 9px; }
.err { color: var(--danger); font-size: 14px; min-height: 20px; }

/* toast, dialog, lightbox */
#toasts { position: fixed; right: 12px; bottom: 12px; z-index: 60; display: flex; flex-direction: column; gap: 8px; max-width: min(360px, calc(100vw - 24px)); }
.toast { background: #111827; color: #fff; padding: 10px 14px; border-radius: 8px; box-shadow: 0 4px 14px rgba(0,0,0,.3); animation: in .2s; }
.toast.bad { background: var(--danger); }
.toast.ok { background: var(--ok); }
@keyframes in { from { opacity: 0; transform: translateY(8px); } }
dialog { border: 1px solid var(--line); border-radius: 12px; padding: 20px; background: var(--panel); color: var(--text); max-width: min(440px, calc(100vw - 32px)); }
dialog p { white-space: pre-line; margin: 0; }
dialog::backdrop { background: rgba(0,0,0,.5); }
dialog .btns { display: flex; justify-content: flex-end; gap: 8px; margin-top: 16px; }
#lightbox { position: fixed; inset: 0; background: rgba(0,0,0,.8); z-index: 80; display: flex; align-items: center; justify-content: center; padding: 16px; cursor: zoom-out; }
#lightbox img { max-width: 100%; max-height: 100%; background: #fff; border-radius: 8px; }