:root {
  --bg: #eef0f3; --panel: #ffffff; --ink: #1d232b; --muted: #6b7480; --line: #d5dae1;
  --accent: #0b6bcb; --accent-ink: #ffffff; --danger: #c0392b; --ok: #1e7d32; --sel: #e8f1fb; --top: #1f2b38;
  font-family: "Segoe UI", system-ui, sans-serif; font-size: 14px;
}
* { box-sizing: border-box; }
[hidden] { display: none !important; }
body { margin: 0; background: var(--bg); color: var(--ink); }
a { color: var(--accent); }
button, .btn { font: inherit; padding: 6px 12px; border: 1px solid var(--line); background: #f7f8fa; border-radius: 4px; cursor: pointer; color: var(--ink); text-decoration: none; display: inline-block; }
button:hover, .btn:hover { background: #e9edf2; }
button.primary, .btn.primary { background: var(--accent); color: var(--accent-ink); border-color: var(--accent); }
button.danger { color: var(--danger); }
button:disabled { opacity: .5; cursor: not-allowed; }
input, select, textarea { font: inherit; padding: 6px 8px; border: 1px solid var(--line); border-radius: 4px; background: #fff; color: var(--ink); }
textarea { width: 100%; min-height: 60px; }
h1 { font-size: 20px; margin: 0 0 4px; }
h2 { font-size: 15px; margin: 0 0 10px; }

.top { display: flex; align-items: center; gap: 16px; padding: 10px 16px; background: var(--top); color: #fff; }
.top .brand { font-weight: 700; } .top .brand span { font-weight: 400; opacity: .75; }
.top nav { display: flex; gap: 4px; flex: 1; }
.top nav a { color: #fff; text-decoration: none; padding: 5px 10px; border-radius: 4px; opacity: .85; }
.top nav a.on, .top nav a:hover { background: #2e3e50; opacity: 1; }
.top .who { opacity: .85; }
.top button { background: #2e3e50; color: #fff; border-color: #44576b; padding: 4px 10px; }

main { max-width: 1200px; margin: 0 auto; padding: 16px; }
.card { background: var(--panel); border: 1px solid var(--line); border-radius: 6px; padding: 14px 16px; margin-bottom: 14px; }
.head { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.head .grow { flex: 1; }
.muted { color: var(--muted); } .small { font-size: 12px; }
.ok { color: var(--ok); } .err { color: var(--danger); }

table { width: 100%; border-collapse: collapse; }
th, td { text-align: left; padding: 7px 8px; border-bottom: 1px solid var(--line); vertical-align: middle; }
th { font-size: 12px; color: var(--muted); font-weight: 600; text-transform: uppercase; letter-spacing: .03em; }
td.num, th.num { text-align: right; font-variant-numeric: tabular-nums; }
tr.click { cursor: pointer; } tr.click:hover { background: var(--sel); }
.tag { display: inline-block; border-radius: 10px; padding: 1px 8px; font-size: 12px; background: #eef3f9; border: 1px solid var(--line); }
.tag.manage { background: #fff1e0; } .tag.export { background: #e6f4ea; } .tag.admin { background: #fde8e8; }

.form { display: grid; grid-template-columns: 140px 1fr; gap: 8px 12px; align-items: center; max-width: 640px; }
.form label { color: var(--muted); }
.row { display: flex; gap: 8px; align-items: center; flex-wrap: wrap; }
.grow { flex: 1; min-width: 0; }

.toast { position: fixed; right: 16px; bottom: 16px; background: var(--top); color: #fff; padding: 10px 14px; border-radius: 6px; max-width: 420px; z-index: 50; }
.toast.err { background: var(--danger); }

dialog { border: 1px solid var(--line); border-radius: 8px; padding: 16px; min-width: 420px; max-width: 90vw; }
dialog::backdrop { background: rgba(0, 0, 0, .3); }
.browser { border: 1px solid var(--line); border-radius: 4px; height: 320px; overflow-y: auto; margin: 8px 0; }
.browser div { padding: 5px 8px; cursor: pointer; display: flex; gap: 8px; }
.browser div:hover { background: var(--sel); }
.browser div.d::before { content: "📁"; } .browser div.f::before { content: "☁"; }

.params { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 8px 16px; margin: 8px 0; }
.params label { display: flex; flex-direction: column; gap: 2px; font-size: 12px; color: var(--muted); }
.params label span.u { font-size: 11px; }
.params input { width: 100%; color: var(--ink); }
.params input.changed { border-color: var(--accent); background: var(--sel); }
details > summary { cursor: pointer; color: var(--accent); margin: 8px 0; }
.zones input { width: 100px; }
.log { background: #1f2b38; color: #dfe6ee; font: 12px/1.4 Consolas, monospace; padding: 8px; border-radius: 4px; max-height: 220px; overflow: auto; white-space: pre-wrap; }
.bar { height: 6px; background: var(--line); border-radius: 3px; overflow: hidden; } .bar > div { height: 100%; background: var(--accent); }
.thumbs { display: flex; gap: 8px; flex-wrap: wrap; } .thumbs img { max-width: 360px; max-height: 260px; border: 1px solid var(--line); border-radius: 4px; background: #fff; }

.login { max-width: 360px; margin: 12vh auto; }
.login .form { grid-template-columns: 1fr; }
@media (max-width: 700px) { .form { grid-template-columns: 1fr; } dialog { min-width: 0; } }

/* ---- thuong hieu 3DSCAN.VN: mau theo logo (xanh dam, vang, do) ---- */
:root { --brand-blue: #0d4a9f; --brand-yellow: #f9bb24; --brand-red: #c62828; --accent: #0d55b5; --top: #10233d; }
body { background-color: var(--bg);
  background-image: linear-gradient(rgba(13, 74, 159, .035) 1px, transparent 1px), linear-gradient(90deg, rgba(13, 74, 159, .035) 1px, transparent 1px);
  background-size: 24px 24px; }
.top { position: relative; background: linear-gradient(90deg, #0b1d33, var(--top) 40%, #16345c); box-shadow: 0 2px 6px rgba(0, 0, 0, .18); }
.top::after { content: ""; position: absolute; left: 0; right: 0; bottom: -3px; height: 3px;
  background: linear-gradient(90deg, var(--brand-yellow) 0 33.3%, var(--brand-blue) 33.3% 66.6%, var(--brand-red) 66.6%); }
.top .brand { display: flex; align-items: center; gap: 8px; letter-spacing: .02em; text-decoration: none; color: #fff; }
.top .brand img { width: 30px; height: 30px; display: block; filter: drop-shadow(0 1px 1px rgba(0, 0, 0, .35)); }
.top .brand b { color: #fff; } .top .brand b i { font-style: normal; color: var(--brand-yellow); }
main { padding-top: 22px; }
.card { box-shadow: 0 1px 2px rgba(16, 35, 61, .06); }
.card > h2:first-child, .card .head h2 { padding-left: 10px; border-left: 4px solid var(--brand-blue); }
button.primary, .btn.primary { background: var(--brand-blue); border-color: var(--brand-blue); }
button.primary:hover, .btn.primary:hover { background: #0a3d84; }
th { background: #f4f7fb; }

/* banner dau trang (quan tri) */
.banner { display: flex; align-items: center; gap: 16px; padding: 16px 20px; margin-bottom: 14px; border-radius: 8px; color: #fff;
  background: linear-gradient(120deg, #0b1d33 0%, var(--brand-blue) 65%, #1565c0 100%); position: relative; overflow: hidden; }
.banner::after { content: ""; position: absolute; right: -40px; top: -40px; width: 220px; height: 220px; opacity: .12;
  background: url(/static/logo_khoi_128.png) center / contain no-repeat; transform: rotate(-8deg); }
.banner img { width: 56px; height: 56px; }
.banner h1 { font-size: 22px; margin: 0; } .banner p { margin: 2px 0 0; opacity: .85; }
.tiles { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-bottom: 14px; }
.tile { background: var(--panel); border: 1px solid var(--line); border-radius: 8px; padding: 12px 14px; border-top: 4px solid var(--brand-blue); }
.tile:nth-child(4n+2) { border-top-color: var(--brand-yellow); } .tile:nth-child(4n+3) { border-top-color: var(--brand-red); }
.tile:nth-child(4n+4) { border-top-color: #2e7d32; }
.tile .so { font-size: 26px; font-weight: 700; color: var(--brand-blue); font-variant-numeric: tabular-nums; }
.tile .nhan { font-size: 12px; color: var(--muted); text-transform: uppercase; letter-spacing: .04em; }

/* trang dang nhap */
body.dang-nhap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px;
  background: radial-gradient(circle at 15% 20%, rgba(249, 187, 36, .18), transparent 40%),
              radial-gradient(circle at 85% 80%, rgba(198, 40, 40, .14), transparent 40%),
              linear-gradient(135deg, #0b1d33 0%, #0d4a9f 60%, #1565c0 100%); }
.dn-khung { display: grid; grid-template-columns: 1fr 1fr; width: min(880px, 100%); background: #fff; border-radius: 14px; overflow: hidden;
  box-shadow: 0 20px 50px rgba(0, 0, 0, .35); }
.dn-trai { background: linear-gradient(160deg, #ffffff 0%, #f1f5fb 100%); padding: 32px 28px; display: flex; flex-direction: column;
  align-items: center; justify-content: center; text-align: center; border-right: 1px solid var(--line); position: relative; }
.dn-trai img { width: min(300px, 90%); height: auto; }
.dn-trai .dn-mo { color: var(--muted); margin-top: 6px; font-size: 13px; }
.dn-trai::after { content: ""; position: absolute; left: 0; right: 0; bottom: 0; height: 5px;
  background: linear-gradient(90deg, var(--brand-yellow) 0 33.3%, var(--brand-blue) 33.3% 66.6%, var(--brand-red) 66.6%); }
.dn-phai { padding: 36px 32px; display: flex; flex-direction: column; justify-content: center; }
.dn-phai h1 { color: var(--brand-blue); font-size: 22px; }
.dn-phai .form { grid-template-columns: 1fr; gap: 6px; max-width: none; margin-top: 10px; }
.dn-phai .form input { padding: 9px 10px; }
.dn-phai .form button { margin-top: 10px; padding: 9px; font-weight: 600; }
.dn-chan { margin-top: 18px; font-size: 12px; color: var(--muted); }
@media (max-width: 760px) { .dn-khung { grid-template-columns: 1fr; } .dn-trai { border-right: 0; padding: 20px; } .dn-trai img { width: 180px; } }