:root {
  --nen: #f4f6f8; --the: #ffffff; --chu: #1b2430; --mo: #5d6b7a; --vien: #dde3ea; --chinh: #0f6e4f; --chinh-chu: #fff;
  --do: #b42318; --do-nen: #fdecea; --xanh-nen: #e5f4ee; --vang-nen: #fff6dd; --vang: #8a5a00; --hover: #eef2f6;
  --bong: 0 1px 2px rgba(16, 24, 40, .06), 0 1px 3px rgba(16, 24, 40, .08); --bo: 10px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --nen: #12161c; --the: #1b2129; --chu: #e6ebf1; --mo: #9aa7b5; --vien: #2c3540; --chinh: #3fb68b; --chinh-chu: #0b1310;
    --do: #ff7b6e; --do-nen: #3a1d1b; --xanh-nen: #173328; --vang-nen: #3a2f14; --vang: #f1c56b; --hover: #222a34;
    --bong: none; color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; background: var(--nen); color: var(--chu); }
body { font: 15px/1.45 system-ui, -apple-system, "Segoe UI", Roboto, sans-serif; overflow-x: hidden; }
button, input, select, textarea { font: inherit; color: inherit; }
.nap { padding: 40px; text-align: center; color: var(--mo); }

/* dang nhap */
.dn { max-width: 380px; margin: 12vh auto; padding: 28px 24px; background: var(--the); border: 1px solid var(--vien);
  border-radius: var(--bo); box-shadow: var(--bong); }
.dn h1 { font-size: 22px; margin: 0 0 4px; }
.dn p { color: var(--mo); margin: 0 0 18px; }
.dn label { display: block; margin: 12px 0 4px; font-weight: 600; font-size: 14px; }
.dn input { width: 100%; }
.dn .nut { width: 100%; margin-top: 18px; }
.ma-o { letter-spacing: .4em; font-size: 22px; text-align: center; }

/* khung */
.dau { position: sticky; top: 0; z-index: 5; background: var(--the); border-bottom: 1px solid var(--vien); }
.dau-trong { display: flex; align-items: center; gap: 12px; max-width: 1280px; margin: 0 auto; padding: 10px 16px; }
.dau b { font-size: 17px; }
.dau .ai { margin-left: auto; color: var(--mo); font-size: 14px; }
.tab { display: flex; gap: 2px; max-width: 1280px; margin: 0 auto; padding: 0 12px; overflow-x: auto; scrollbar-width: none; }
.tab button { border: 0; background: none; padding: 10px 12px; border-bottom: 2px solid transparent; color: var(--mo);
  cursor: pointer; white-space: nowrap; font-weight: 600; }
.tab button.on { color: var(--chinh); border-bottom-color: var(--chinh); }
main { max-width: 1280px; margin: 0 auto; padding: 16px; }
h2 { font-size: 18px; margin: 20px 0 10px; }
h2:first-child { margin-top: 0; }

.the { min-width: 0; overflow-wrap: anywhere; background: var(--the); border: 1px solid var(--vien); border-radius: var(--bo); padding: 14px 16px; box-shadow: var(--bong); }
.luoi { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 12px; }
.so { font-size: 26px; font-weight: 700; font-variant-numeric: tabular-nums; }
.nhan { color: var(--mo); font-size: 13px; }
.hang { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin: 10px 0; }
.hang > .gian { flex: 1; }

/* nut + o nhap */
.nut { border: 1px solid var(--vien); background: var(--the); padding: 7px 14px; border-radius: 8px; cursor: pointer;
  font-weight: 600; white-space: nowrap; }
.nut:hover { background: var(--hover); }
.nut.chinh { background: var(--chinh); border-color: var(--chinh); color: var(--chinh-chu); }
.nut.chinh:hover { filter: brightness(1.08); }
.nut.do { color: var(--do); border-color: var(--do); }
.nut.nho { padding: 3px 9px; font-size: 13px; }
.nut:disabled { opacity: .5; cursor: default; }
input, select, textarea { background: var(--the); border: 1px solid var(--vien); border-radius: 8px; padding: 7px 10px; }
input:focus, select:focus, textarea:focus, .nut:focus-visible, .tab button:focus-visible { outline: 2px solid var(--chinh); outline-offset: 1px; }
textarea { width: 100%; min-height: 110px; resize: vertical; }
input[type=number] { width: 130px; }
input.tim { min-width: 0; width: 240px; max-width: 100%; }

/* bang */
.cuon { overflow-x: auto; background: var(--the); border: 1px solid var(--vien); border-radius: var(--bo); }
table { border-collapse: collapse; width: 100%; font-size: 14px; }
th, td { padding: 8px 10px; border-bottom: 1px solid var(--vien); text-align: left; white-space: nowrap; }
th { font-size: 12px; text-transform: uppercase; letter-spacing: .03em; color: var(--mo); background: var(--nen); position: sticky; top: 0; }
tbody tr:hover { background: var(--hover); }
tbody tr.bam { cursor: pointer; }
td.so-r, th.so-r { text-align: right; font-variant-numeric: tabular-nums; }
td.dai { white-space: normal; min-width: 220px; max-width: 360px; overflow-wrap: anywhere; }
.trong { padding: 24px; text-align: center; color: var(--mo); }

.cham { display: inline-block; width: 8px; height: 8px; border-radius: 50%; background: var(--vien); margin-right: 6px; }
.cham.on { background: #22a06b; }
.nhanh { display: inline-block; padding: 1px 8px; border-radius: 99px; font-size: 12px; font-weight: 600; }
.nhanh.xanh { background: var(--xanh-nen); color: var(--chinh); }
.nhanh.do { background: var(--do-nen); color: var(--do); }
.nhanh.vang { background: var(--vang-nen); color: var(--vang); }
.nhanh.xam { background: var(--hover); color: var(--mo); }

/* cong tac */
.ct { position: relative; display: inline-block; width: 38px; height: 22px; border-radius: 99px; background: var(--vien);
  border: 0; cursor: pointer; vertical-align: middle; padding: 0; }
.ct::after { content: ""; position: absolute; top: 3px; left: 3px; width: 16px; height: 16px; border-radius: 50%; background: #fff; transition: left .15s; }
.ct.on { background: var(--chinh); }
.ct.on.do { background: var(--do); }
.ct.on::after { left: 19px; }

/* o thang */
.thang { display: inline-flex; align-items: center; justify-content: center; min-width: 54px; height: 28px; border-radius: 6px;
  border: 1px solid var(--vien); background: var(--the); cursor: pointer; font-size: 13px; font-weight: 600; color: var(--mo); }
.thang.da { background: var(--xanh-nen); border-color: var(--chinh); color: var(--chinh); }
.thang.nay { box-shadow: inset 0 0 0 2px var(--chinh); }
.cac-thang { display: flex; flex-wrap: wrap; gap: 6px; }

.thanh-chon { position: sticky; bottom: 0; z-index: 4; display: flex; flex-wrap: wrap; gap: 8px; align-items: center;
  padding: 10px 16px; margin: 12px -16px -16px; background: var(--the); border-top: 1px solid var(--vien); }

pre.log { background: #0d1117; color: #d6dde6; padding: 12px; border-radius: 8px; max-height: 420px; overflow: auto;
  font-size: 12.5px; white-space: pre-wrap; word-break: break-word; }

/* hop thoai */
dialog { border: 1px solid var(--vien); border-radius: 12px; padding: 0; background: var(--the); color: var(--chu);
  width: min(640px, calc(100vw - 24px)); max-height: calc(100vh - 32px); }
dialog::backdrop { background: rgba(10, 15, 20, .45); }
.hop-dau { display: flex; align-items: center; padding: 14px 18px; border-bottom: 1px solid var(--vien); }
.hop-dau b { font-size: 17px; }
.hop-dau .dong { margin-left: auto; border: 0; background: none; font-size: 22px; cursor: pointer; color: var(--mo); line-height: 1; }
.hop-than { padding: 14px 18px 18px; }
.hop-than h3 { font-size: 14px; margin: 16px 0 6px; color: var(--mo); text-transform: uppercase; letter-spacing: .03em; }
.hop-than h3:first-child { margin-top: 0; }
.chu-mo { color: var(--mo); font-size: 13px; }
.mk-moi { font-family: ui-monospace, Consolas, monospace; background: var(--vang-nen); color: var(--vang); padding: 2px 6px; border-radius: 6px; }

#toast { position: fixed; left: 50%; bottom: 20px; transform: translateX(-50%); z-index: 50; display: flex; flex-direction: column; gap: 6px; pointer-events: none; width: max-content; max-width: calc(100vw - 32px); }
#toast div { background: #1b2430; color: #fff; padding: 9px 16px; border-radius: 8px; box-shadow: 0 4px 16px rgba(0,0,0,.25); font-size: 14px; }
#toast div.loi { background: #b42318; }

@media (max-width: 640px) {
  main { padding: 12px; }
  .dau-trong { padding: 8px 12px; }
  .so { font-size: 22px; }
  input.tim { width: 100%; }
  .thanh-chon { margin: 12px -12px -12px; padding: 8px 12px; }
}