/* ============ Quản lý máy · quanlymay.io.vn ============ */
:root {
  --nen: #f3f5f8;
  --the: #ffffff;
  --the-2: #f7f9fc;
  --vien: #e3e8ef;
  --chu: #142033;
  --chu-phu: #5d6b82;
  --chu-mo: #8b97ab;
  --nhan: #0d9488;
  --nhan-dam: #0b7a70;
  --nhan-nhat: #ccfbf1;
  --ben: #0d1726;
  --ben-2: #142236;
  --ben-chu: #b7c3d6;
  --luc: #16a34a; --luc-nen: #dcfce7;
  --vang: #d97706; --vang-nen: #fef3c7;
  --do: #dc2626; --do-nen: #fee2e2;
  --xanh: #2563eb; --xanh-nen: #dbeafe;
  --xam: #64748b; --xam-nen: #eef2f6;
  --bong: 0 1px 2px rgba(16,24,40,.05), 0 1px 3px rgba(16,24,40,.06);
  --bo: 12px;
  --so: 'JetBrains Mono', ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
@media (prefers-color-scheme: dark) {
  :root {
    --nen: #0b111b; --the: #121a27; --the-2: #172131; --vien: #233044;
    --chu: #e6ecf5; --chu-phu: #9aa8bd; --chu-mo: #6f7d93;
    --nhan: #2dd4bf; --nhan-dam: #5eead4; --nhan-nhat: #123c3a;
    --ben: #080d15; --ben-2: #111a28;
    --luc-nen: #12301f; --vang-nen: #3a2a0c; --do-nen: #3d1414; --xanh-nen: #132a4f; --xam-nen: #1c2636;
    --luc: #4ade80; --vang: #fbbf24; --do: #f87171; --xanh: #60a5fa; --xam: #94a3b8;
    --bong: 0 1px 2px rgba(0,0,0,.4);
  }
}
* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  font-family: 'Be Vietnam Pro', system-ui, -apple-system, 'Segoe UI', Roboto, sans-serif;
  font-size: 14px; line-height: 1.5; color: var(--chu); background: var(--nen);
  -webkit-font-smoothing: antialiased;
}
a { color: var(--nhan-dam); text-decoration: none; }
a:hover { text-decoration: underline; }
.ic { flex-shrink: 0; vertical-align: -3px; }
.so, .num { font-family: var(--so); font-variant-numeric: tabular-nums; }
h2 { font-size: 16px; margin: 0 0 12px; font-weight: 600; }
h3 { font-size: 14px; margin: 0 0 8px; font-weight: 600; }
code { font-family: var(--so); font-size: 12.5px; background: var(--xam-nen); padding: 1px 6px; border-radius: 5px; word-break: break-all; }
hr { border: 0; border-top: 1px solid var(--vien); margin: 16px 0; }

/* ---------- Khung ---------- */
.khung { display: flex; min-height: 100vh; }
.thanh-ben {
  width: 248px; background: var(--ben); color: var(--ben-chu);
  position: fixed; inset: 0 auto 0 0; display: flex; flex-direction: column; z-index: 40;
  transition: transform .22s ease;
}
.logo { display: flex; align-items: center; gap: 10px; padding: 18px 18px 14px; color: #fff; text-decoration: none !important; }
.logo-dau { width: 36px; height: 36px; border-radius: 10px; display: grid; place-items: center; background: linear-gradient(135deg, #14b8a6, #0e7490); color: #fff; }
.logo-chu b { display: block; font-size: 15px; letter-spacing: .2px; }
.logo-chu small { display: block; font-size: 11.5px; color: #7f8ea6; margin-top: -2px; }
.menu { flex: 1; overflow-y: auto; padding: 6px 10px; }
.menu a {
  display: flex; align-items: center; gap: 11px; padding: 9px 11px; margin: 2px 0;
  border-radius: 9px; color: var(--ben-chu); font-weight: 500; text-decoration: none !important;
}
.menu a:hover { background: var(--ben-2); color: #fff; }
.menu a.dang-chon { background: rgba(45,212,191,.13); color: #5eead4; }
.menu a span { flex: 1; }
.huy-hieu { font-style: normal; background: var(--do); color: #fff; font-size: 11px; font-weight: 700; border-radius: 10px; padding: 0 7px; line-height: 18px; }
.ben-duoi { display: flex; align-items: center; gap: 6px; padding: 12px; border-top: 1px solid rgba(255,255,255,.06); }
.nguoi-dung { flex: 1; display: flex; align-items: center; gap: 10px; color: #fff; padding: 6px; border-radius: 9px; min-width: 0; text-decoration: none !important; }
.nguoi-dung:hover, .nguoi-dung.dang-chon { background: var(--ben-2); }
.anh-dai-dien { width: 32px; height: 32px; border-radius: 50%; background: #1e3a52; color: #5eead4; display: grid; place-items: center; font-weight: 700; flex-shrink: 0; }
.nd-chu { min-width: 0; }
.nd-chu b { display: block; font-size: 13px; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nd-chu small { color: #7f8ea6; font-size: 11.5px; }
.form-dang-xuat { margin: 0; }
.form-dang-xuat button { background: none; border: 0; color: #7f8ea6; cursor: pointer; padding: 8px; border-radius: 8px; }
.form-dang-xuat button:hover { color: #fff; background: var(--ben-2); }
.man-che { display: none; }

.noi-dung { flex: 1; margin-left: 248px; min-width: 0; display: flex; flex-direction: column; }
.thanh-tren {
  position: sticky; top: 0; z-index: 20; display: flex; align-items: center; gap: 12px;
  padding: 14px 24px; background: color-mix(in srgb, var(--nen) 88%, transparent);
  backdrop-filter: blur(8px); border-bottom: 1px solid var(--vien);
}
.thanh-tren h1 { font-size: 18px; margin: 0; font-weight: 700; flex: 1; min-width: 0; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.nut-menu { display: none; background: none; border: 0; color: var(--chu); padding: 4px; cursor: pointer; }
.tren-phai { display: flex; align-items: center; gap: 8px; }
.chuong-tren { position: relative; color: var(--chu-phu); padding: 6px; border-radius: 8px; display: inline-flex; }
.chuong-tren:hover { background: var(--the); }
.chuong-tren em { position: absolute; top: 0; right: -2px; font-style: normal; background: var(--do); color: #fff; font-size: 10px; font-weight: 700; border-radius: 9px; padding: 0 5px; line-height: 16px; }
.vung { padding: 22px 24px 40px; flex: 1; }
.chan-trang { padding: 14px 24px; color: var(--chu-mo); font-size: 12px; border-top: 1px solid var(--vien); }

/* ---------- Thẻ & lưới ---------- */
.the { background: var(--the); border: 1px solid var(--vien); border-radius: var(--bo); box-shadow: var(--bong); padding: 18px; margin-bottom: 18px; }
.the-dau { display: flex; align-items: center; justify-content: space-between; gap: 10px; margin-bottom: 14px; flex-wrap: wrap; }
.the-dau h2 { margin: 0; }
.luoi { display: grid; gap: 16px; }
.luoi-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.luoi-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.luoi-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.luoi-5 { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.luoi-tb { grid-template-columns: repeat(auto-fill, minmax(330px, 1fr)); }

.o-so { background: var(--the); border: 1px solid var(--vien); border-radius: var(--bo); padding: 15px 16px; box-shadow: var(--bong); min-width: 0; }
.o-so .nhan-o { color: var(--chu-phu); font-size: 12.5px; display: flex; align-items: center; gap: 6px; }
.o-so .gia-tri { font-family: var(--so); font-size: 24px; font-weight: 600; margin-top: 4px; letter-spacing: -.5px; white-space: nowrap; }
.o-so .gia-tri small { font-size: 13px; color: var(--chu-phu); font-weight: 500; margin-left: 3px; letter-spacing: 0; }
.o-so .phu { color: var(--chu-mo); font-size: 12px; margin-top: 2px; }

/* ---------- Thẻ thiết bị ---------- */
.the-tb { background: var(--the); border: 1px solid var(--vien); border-radius: var(--bo); box-shadow: var(--bong); padding: 16px; display: flex; flex-direction: column; gap: 12px; }
.the-tb.ngoai-tuyen { opacity: .86; }
.tb-dau { display: flex; align-items: flex-start; gap: 12px; }
.tb-bieu-tuong { width: 42px; height: 42px; border-radius: 11px; background: var(--nhan-nhat); color: var(--nhan-dam); display: grid; place-items: center; flex-shrink: 0; }
.ngoai-tuyen .tb-bieu-tuong { background: var(--xam-nen); color: var(--xam); }
.tb-ten { flex: 1; min-width: 0; }
.tb-ten a { color: var(--chu); font-weight: 600; font-size: 15px; }
.tb-ten .phu { color: var(--chu-mo); font-size: 12px; display: flex; align-items: center; gap: 6px; flex-wrap: wrap; }
.dot { width: 8px; height: 8px; border-radius: 50%; display: inline-block; margin-right: 5px; vertical-align: 1px; }
.dot-on { background: var(--luc); box-shadow: 0 0 0 3px color-mix(in srgb, var(--luc) 22%, transparent); animation: nhip 2s infinite; }
.dot-off { background: var(--chu-mo); }
@keyframes nhip { 50% { box-shadow: 0 0 0 5px color-mix(in srgb, var(--luc) 8%, transparent); } }
.tt-chu { font-size: 12px; color: var(--chu-phu); }
.tb-chi-so { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
.cs { background: var(--the-2); border-radius: 9px; padding: 9px 10px; min-width: 0; }
.cs .k { font-size: 11.5px; color: var(--chu-phu); display: flex; align-items: center; gap: 4px; }
.cs .v { font-family: var(--so); font-weight: 600; font-size: 17px; margin-top: 2px; white-space: nowrap; }
.cs .v small { font-size: 11px; color: var(--chu-phu); font-weight: 500; }
.cs.do .v { color: var(--do); } .cs.vang .v { color: var(--vang); } .cs.luc .v { color: var(--luc); }
.thanh-tai { display: grid; gap: 7px; }
.thanh-tai .hang { display: grid; grid-template-columns: 44px 1fr 48px; align-items: center; gap: 8px; font-size: 12px; color: var(--chu-phu); }
.thanh-tai .vach { height: 7px; background: var(--xam-nen); border-radius: 4px; overflow: hidden; }
.thanh-tai .vach i { display: block; height: 100%; background: var(--nhan); border-radius: 4px; transition: width .5s; }
.thanh-tai .vach i.cao { background: var(--vang); } .thanh-tai .vach i.rat-cao { background: var(--do); }
.thanh-tai .pt { text-align: right; font-family: var(--so); color: var(--chu); }
.tb-nut { display: flex; gap: 6px; flex-wrap: wrap; border-top: 1px dashed var(--vien); padding-top: 12px; }
.tb-nut form { margin: 0; }

/* ---------- Nút ---------- */
.nut {
  display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 8px 14px;
  border-radius: 9px; border: 1px solid var(--vien); background: var(--the); color: var(--chu);
  font: inherit; font-weight: 500; cursor: pointer; text-decoration: none !important; white-space: nowrap; line-height: 1.3;
}
.nut:hover { border-color: var(--chu-mo); }
.nut:disabled, .nut[aria-disabled="true"] { opacity: .45; cursor: not-allowed; }
.nut-chinh { background: var(--nhan); border-color: var(--nhan); color: #fff; }
.nut-chinh:hover { background: var(--nhan-dam); border-color: var(--nhan-dam); }
@media (prefers-color-scheme: dark) { .nut-chinh { color: #04201d; } }
.nut-do { color: var(--do); }
.nut-do:hover { background: var(--do-nen); border-color: var(--do); }
.nut-luc { color: var(--luc); }
.nut-luc:hover { background: var(--luc-nen); border-color: var(--luc); }
.nut-nho { padding: 5px 10px; font-size: 12.5px; border-radius: 8px; }
.nut-icon { padding: 6px; }
.nhom-nut { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; }

/* ---------- Nhãn ---------- */
.nhan { display: inline-block; padding: 1px 8px; border-radius: 20px; font-size: 11.5px; font-weight: 600; white-space: nowrap; }
.nhan-luc { background: var(--luc-nen); color: var(--luc); }
.nhan-vang { background: var(--vang-nen); color: var(--vang); }
.nhan-do { background: var(--do-nen); color: var(--do); }
.nhan-xanh { background: var(--xanh-nen); color: var(--xanh); }
.nhan-xam { background: var(--xam-nen); color: var(--xam); }

/* ---------- Bảng ---------- */
.bang-cuon { overflow-x: auto; margin: 0 -18px; padding: 0 18px; }
table.bang { width: 100%; border-collapse: collapse; font-size: 13.5px; }
.bang th { text-align: left; font-size: 12px; color: var(--chu-phu); font-weight: 600; padding: 9px 10px; border-bottom: 1px solid var(--vien); white-space: nowrap; background: var(--the-2); }
.bang td { padding: 10px; border-bottom: 1px solid var(--vien); vertical-align: middle; }
.bang tr:last-child td { border-bottom: 0; }
.bang tr:hover td { background: color-mix(in srgb, var(--the-2) 60%, transparent); }
.bang .phai { text-align: right; }
.bang .nho { color: var(--chu-mo); font-size: 12px; }
.trong { text-align: center; color: var(--chu-mo); padding: 30px 10px !important; }

/* ---------- Form ---------- */
.form-luoi { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px 16px; }
.form-luoi .rong { grid-column: 1 / -1; }
.truong label { display: block; font-weight: 500; font-size: 13px; margin-bottom: 5px; }
.truong .goi-y { color: var(--chu-mo); font-size: 12px; margin-top: 4px; }
input[type=text], input[type=password], input[type=email], input[type=number], input[type=time], input[type=search], select, textarea {
  width: 100%; padding: 9px 11px; border: 1px solid var(--vien); border-radius: 9px; background: var(--the);
  color: var(--chu); font: inherit; outline: none; transition: border-color .15s, box-shadow .15s;
}
input:focus, select:focus, textarea:focus { border-color: var(--nhan); box-shadow: 0 0 0 3px color-mix(in srgb, var(--nhan) 18%, transparent); }
textarea { min-height: 80px; resize: vertical; }
.chon-hop { display: inline-flex; align-items: center; gap: 7px; cursor: pointer; font-weight: 500; }
.chon-hop input { width: 16px; height: 16px; accent-color: var(--nhan); }
.loc { display: flex; gap: 8px; flex-wrap: wrap; align-items: center; margin-bottom: 14px; }
.loc select, .loc input { width: auto; min-width: 140px; }
.tab-chon { display: inline-flex; background: var(--xam-nen); border-radius: 10px; padding: 3px; gap: 2px; flex-wrap: wrap; }
.tab-chon a { padding: 6px 12px; border-radius: 8px; color: var(--chu-phu); font-weight: 500; font-size: 13px; text-decoration: none !important; }
.tab-chon a.dang-chon { background: var(--the); color: var(--chu); box-shadow: var(--bong); }

/* ---------- Thông báo ---------- */
.thong-bao { display: flex; align-items: flex-start; gap: 10px; padding: 11px 14px; border-radius: 10px; margin-bottom: 16px; border: 1px solid; }
.thong-bao span { flex: 1; }
.tb-success { background: var(--luc-nen); border-color: color-mix(in srgb, var(--luc) 35%, transparent); color: var(--luc); }
.tb-error { background: var(--do-nen); border-color: color-mix(in srgb, var(--do) 35%, transparent); color: var(--do); }
.tb-warning { background: var(--vang-nen); border-color: color-mix(in srgb, var(--vang) 35%, transparent); color: var(--vang); }
.tb-info { background: var(--xanh-nen); border-color: color-mix(in srgb, var(--xanh) 35%, transparent); color: var(--xanh); }
.tb-dong { background: none; border: 0; font-size: 20px; line-height: 1; cursor: pointer; color: inherit; opacity: .6; }
.hop-chu { background: var(--the-2); border: 1px solid var(--vien); border-radius: 10px; padding: 12px 14px; font-size: 13px; color: var(--chu-phu); }
.hop-chu b { color: var(--chu); }

/* ---------- Danh sách thông số ---------- */
.ds-tt { display: grid; grid-template-columns: 150px 1fr; gap: 8px 14px; font-size: 13.5px; }
.ds-tt dt { color: var(--chu-phu); }
.ds-tt dd { margin: 0; min-width: 0; word-break: break-word; }

/* ---------- Biểu đồ ---------- */
.khung-bieu-do { position: relative; height: 300px; }
.khung-bieu-do.thap { height: 220px; }

/* ---------- Cảnh báo ---------- */
.ds-cb { display: flex; flex-direction: column; }
.cb { display: flex; gap: 10px; padding: 10px 0; border-bottom: 1px solid var(--vien); align-items: flex-start; }
.cb:last-child { border-bottom: 0; }
.cb .tg { color: var(--chu-mo); font-size: 12px; white-space: nowrap; }
.cb .nd { flex: 1; min-width: 0; }
.cb.chua-doc .nd { font-weight: 600; }

/* ---------- Phân trang ---------- */
.phan-trang { display: flex; gap: 4px; align-items: center; flex-wrap: wrap; margin-top: 14px; }
.phan-trang a, .phan-trang span { padding: 5px 10px; border-radius: 7px; border: 1px solid var(--vien); font-size: 13px; }
.phan-trang .hien-tai { background: var(--nhan); color: #fff; border-color: var(--nhan); }
.phan-trang .tong { border: 0; color: var(--chu-mo); margin-left: auto; }

/* ---------- Hộp thoại ---------- */
dialog.hop-thoai { border: 1px solid var(--vien); border-radius: 14px; padding: 0; background: var(--the); color: var(--chu); width: min(440px, calc(100vw - 32px)); box-shadow: 0 20px 50px rgba(0,0,0,.25); }
dialog.hop-thoai::backdrop { background: rgba(8,13,21,.55); }
.hop-thoai form { padding: 20px; margin: 0; }
.hop-thoai h3 { font-size: 16px; margin-bottom: 6px; }
.hop-thoai p { color: var(--chu-phu); margin: 0 0 14px; }
.hop-thoai .nhom-nut { justify-content: flex-end; margin-top: 16px; }

/* ---------- Đăng nhập ---------- */
.trang-vao { min-height: 100vh; display: grid; place-items: center; padding: 24px 16px; background:
  radial-gradient(1200px 600px at 10% -10%, rgba(20,184,166,.18), transparent 60%),
  radial-gradient(900px 500px at 110% 110%, rgba(14,116,144,.18), transparent 60%), var(--nen); }
.hop-vao { width: min(400px, 100%); background: var(--the); border: 1px solid var(--vien); border-radius: 16px; padding: 28px; box-shadow: 0 10px 40px rgba(16,24,40,.08); }
.hop-vao.rong { width: min(640px, 100%); }
.hop-vao .logo { padding: 0 0 18px; color: var(--chu); }
.hop-vao .logo-chu small { color: var(--chu-mo); }
.hop-vao .truong { margin-bottom: 14px; }
.hop-vao .nut-chinh { width: 100%; padding: 11px; }

/* ---------- Tiện ích ---------- */
.mo { color: var(--chu-mo); } .phu-chu { color: var(--chu-phu); }
.chu-do { color: var(--do); } .chu-luc { color: var(--luc); } .chu-vang { color: var(--vang); }
.mt-0 { margin-top: 0; } .mb-0 { margin-bottom: 0; } .mt { margin-top: 14px; }
.an { display: none !important; }
.cot-phai { text-align: right; }
.nowrap { white-space: nowrap; }
.buoc { counter-reset: buoc; padding: 0; list-style: none; margin: 0; }
.buoc > li { position: relative; padding: 0 0 16px 40px; }
.buoc > li::before { counter-increment: buoc; content: counter(buoc); position: absolute; left: 0; top: -1px; width: 26px; height: 26px; border-radius: 50%; background: var(--nhan-nhat); color: var(--nhan-dam); display: grid; place-items: center; font-weight: 700; font-size: 13px; }
.sao-chep { display: flex; gap: 6px; align-items: stretch; }
.sao-chep code { flex: 1; padding: 8px 10px; display: flex; align-items: center; }

/* ---------- Đáp ứng ---------- */
@media (max-width: 1200px) { .luoi-5 { grid-template-columns: repeat(3, minmax(0, 1fr)); } .luoi-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 980px) {
  .thanh-ben { transform: translateX(-100%); }
  body.mo-menu .thanh-ben { transform: none; }
  body.mo-menu .man-che { display: block; position: fixed; inset: 0; background: rgba(8,13,21,.5); z-index: 30; }
  .noi-dung { margin-left: 0; }
  .nut-menu { display: inline-flex; }
  .luoi-2, .luoi-3 { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 640px) {
  .thanh-tren { padding: 12px 16px; }
  .thanh-tren h1 { font-size: 16px; }
  .vung { padding: 16px 16px 32px; }
  .the { padding: 14px; }
  .bang-cuon { margin: 0 -14px; padding: 0 14px; }
  .luoi-4, .luoi-5 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .luoi-tb { grid-template-columns: minmax(0, 1fr); }
  .form-luoi { grid-template-columns: minmax(0, 1fr); }
  .o-so .gia-tri { font-size: 20px; }
  .ds-tt { grid-template-columns: 1fr; gap: 2px; }
  .ds-tt dd { margin-bottom: 8px; }
  .khung-bieu-do { height: 240px; }
  /* bảng → thẻ */
  table.bang.the-hoa thead { display: none; }
  table.bang.the-hoa, table.bang.the-hoa tbody, table.bang.the-hoa tr, table.bang.the-hoa td { display: block; width: 100%; }
  table.bang.the-hoa tr { border: 1px solid var(--vien); border-radius: 10px; padding: 8px 10px; margin-bottom: 10px; }
  table.bang.the-hoa td { border: 0; padding: 4px 0; text-align: right; overflow: hidden; }
  table.bang.the-hoa td::before { content: attr(data-nhan); float: left; margin-right: 12px; color: var(--chu-phu); font-size: 12px; text-align: left; line-height: 1.9; }
  table.bang.the-hoa td:empty, table.bang.the-hoa td:not([data-nhan]):empty { display: none; }
  table.bang.the-hoa td .nho { display: block; }
  table.bang.the-hoa td.phai { text-align: right; }
  table.bang.the-hoa td.trong { display: block; text-align: center; }
  table.bang.the-hoa td.trong::before { content: none; }
}

/* ============ Bảo mật: 2 lớp, mã dự phòng, phiên ============ */
.o-bay { position: absolute; left: -10000px; top: auto; width: 1px; height: 1px; overflow: hidden; }
.qr-khung { display: grid; place-items: center; margin: 10px auto 0; padding: 12px; background: #fff; border-radius: 12px; width: max-content; border: 1px solid var(--vien); }
.qr-khung img { display: block; width: 220px; height: 220px; image-rendering: pixelated; }
.o-ma { font-family: 'JetBrains Mono', ui-monospace, monospace; font-size: 22px !important; letter-spacing: 4px; text-align: center; }
.luoi-ma { display: grid; grid-template-columns: repeat(2, 1fr); gap: 8px; margin-top: 14px; }
.luoi-ma span { padding: 10px; border: 1px dashed var(--vien); border-radius: 8px; text-align: center; font-size: 16px; letter-spacing: 1px; }
@media (max-width: 420px) { .luoi-ma { grid-template-columns: 1fr; } }
.the-mo-hinh td .nho { display: block; }