*{margin:0;padding:0;box-sizing:border-box}
:root{
  --navy:#1F3864; --navy2:#2E74B5; --cam:#BF4E14; --cam2:#BF4E14;
  --nen:#EEF2F7; --vien:#DDE5F0; --chu:#1F3864; --mo:#8494AC;
  --xanh:#2F8F4E; --do:#A03027; --vang:#BF4E14;
  --xnhat:#D9E1F2; --xsang:#BDE0FF; --cnhat:#FDF1EA; --lnhat:#E2EFDA; --vnhat:#FDF1EA;
  --sb:248px; --tb:60px;
}
body{font-family:"Segoe UI",system-ui,-apple-system,sans-serif;background:var(--nen);color:var(--chu);
  font-size:14px;-webkit-font-smoothing:antialiased;line-height:1.45}

/* ══ KHUNG ══ */
#app{display:grid;grid-template-columns:var(--sb) 1fr;min-height:100vh}
aside{background:#fff;border-right:1px solid var(--vien);display:flex;flex-direction:column;
  position:fixed;top:0;bottom:0;width:var(--sb);z-index:40}
.brand{display:flex;align-items:center;gap:11px;padding:16px 18px;border-bottom:1px solid var(--vien)}
.brand img{width:38px;height:38px;object-fit:contain}
.brand b{font-size:15px;color:var(--navy);letter-spacing:.2px;display:block;line-height:1.2}
.brand small{font-size:9.5px;color:var(--mo);letter-spacing:1.3px;text-transform:uppercase}
.co{margin:14px 14px 6px;background:linear-gradient(135deg,#2E74B5,#4E93CE);border-radius:14px;
  padding:11px 13px;color:#fff;display:flex;align-items:center;gap:10px}
.co .ch{width:30px;height:30px;border-radius:50%;background:rgba(255,255,255,.22);display:grid;
  place-items:center;font-weight:800;font-size:12px;flex-shrink:0}
.co b{font-size:13px;display:block;line-height:1.25}
.co small{font-size:11px;opacity:.85}
.nhom{font-size:10px;font-weight:700;color:var(--mo);letter-spacing:1.2px;
  padding:16px 20px 7px;text-transform:uppercase}
aside a{display:flex;align-items:center;gap:11px;padding:9px 14px;margin:2px 12px;color:#4A5670;
  font-size:13.5px;cursor:pointer;text-decoration:none;border-radius:12px;transition:.12s}
aside a:hover{background:#F4F7FC;color:var(--navy)}
aside a.on{background:var(--xnhat);color:var(--navy);font-weight:600}
aside a .ic{width:17px;text-align:center;opacity:.7;font-size:14px}
aside a.on .ic{opacity:1}
aside a .sl{margin-left:auto;background:var(--cam);color:#fff;font-size:10.5px;font-weight:700;
  border-radius:12px;padding:1px 7px;min-width:19px;text-align:center}
.mnu{flex:1;overflow-y:auto;padding-bottom:8px}
.duoi{border-top:1px solid var(--vien);padding:8px 0;flex-shrink:0}
.dbar{padding:9px 18px 12px}
.dbar .t{display:flex;justify-content:space-between;font-size:9.5px;color:var(--mo);
  letter-spacing:.6px;text-transform:uppercase;margin-bottom:5px}
.dbar .th{height:3px;background:var(--vien);border-radius:2px;overflow:hidden}
.dbar .th i{display:block;height:100%;background:var(--navy2);border-radius:2px}

main{grid-column:2;display:flex;flex-direction:column;min-width:0}
header{height:var(--tb);background:#fff;border-bottom:1px solid var(--vien);display:flex;
  align-items:center;gap:14px;padding:0 22px;position:sticky;top:0;z-index:30}
.nav-toggle{display:none;width:34px;height:34px;border:1px solid var(--vien);border-radius:10px;
  background:#fff;color:var(--navy);font-size:18px;cursor:pointer}
.bc{font-size:13px;color:var(--mo)}
.bc .home{border:0;background:none;padding:4px 2px;color:var(--navy2);font:inherit;cursor:pointer}
.bc .home:hover{text-decoration:underline;color:var(--navy)}
.bc b{color:var(--chu);font-weight:600}
.tim{flex:1;max-width:420px;position:relative}
.tim.hide{visibility:hidden;pointer-events:none}
.tim input{width:100%;background:var(--nen);border:1px solid transparent;border-radius:999px;
  padding:8px 12px 8px 34px;font-size:13px;font-family:inherit;color:var(--chu);outline:none}
.tim input:focus{border-color:var(--navy2);background:#fff}
.tim .kl{position:absolute;left:12px;top:50%;transform:translateY(-50%);color:var(--mo);font-size:13px}
.hd-p{margin-left:auto;display:flex;align-items:center;gap:12px}
.chuong{position:relative;cursor:pointer;font-size:16px;color:#5A6580;padding:4px}
.chuong i{position:absolute;top:0;right:0;background:var(--cam);color:#fff;font-size:9px;
  font-weight:700;border-radius:8px;padding:0 4px;font-style:normal}
.toi{display:flex;align-items:center;gap:9px;padding-left:12px;border-left:1px solid var(--vien)}
.avt{width:34px;height:34px;border-radius:50%;background:var(--cam);color:#fff;display:grid;
  place-items:center;font-size:12px;font-weight:800;flex-shrink:0}
.toi .tt b{display:block;font-size:13px;line-height:1.25}
.toi .tt small{font-size:11px;color:var(--mo)}
.noi{padding:20px 22px 46px;flex:1}

/* ══ THÀNH PHẦN ══ */
.hero::after{content:'';position:absolute;right:0;top:0;bottom:0;width:34%;opacity:.16;
  background:repeating-linear-gradient(135deg,transparent 0 18px,#fff 18px 19px)}
.hero>*{position:relative;z-index:1}
.hero{background:linear-gradient(115deg,var(--navy) 0%,#2E74B5 78%,#4E93CE 100%);
  border-radius:20px;padding:22px 26px;color:#fff;display:flex;align-items:center;
  gap:20px;margin-bottom:18px;position:relative;overflow:hidden}
.hero h2{font-size:20px;margin-bottom:5px}
.hero p{font-size:13px;opacity:.82}
.hero .kh{margin-left:auto;text-align:right;font-size:11.5px;line-height:1.7;opacity:.9;
  letter-spacing:2px;text-transform:uppercase;white-space:nowrap}
.bao-strip{background:#fff;border-radius:18px;padding:13px 17px;
  display:flex;align-items:center;gap:13px;margin-bottom:18px;box-shadow:0 2px 12px rgba(31,56,100,.045)}
.bao-strip .kt{width:26px;height:26px;border-radius:50%;background:var(--cnhat);color:var(--cam);
  display:grid;place-items:center;font-weight:800;flex-shrink:0}
.bao-strip b{font-size:13.5px;display:block}
.bao-strip small{color:var(--mo);font-size:12px}
.bao-strip a{margin-left:auto;color:var(--navy2);font-size:12.5px;font-weight:600;cursor:pointer;white-space:nowrap}

.kpi{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px;margin-bottom:18px}
.kpi>.k{background:#fff;border-radius:18px;padding:16px 18px;box-shadow:0 2px 12px rgba(31,56,100,.045);
  position:relative;overflow:hidden}
.kpi>.k::after{content:'';position:absolute;right:-26px;bottom:-30px;width:96px;height:96px;
  border-radius:50%;background:var(--xnhat);opacity:.75}
.kpi>.k.c2::after{background:var(--lnhat)}
.kpi>.k.c3::after{background:var(--cnhat)}
.kpi>.k.c4::after{background:var(--vnhat)}
.kpi>.k>*{position:relative;z-index:1}
.kpi>.k .n{font-size:11px;color:var(--mo);text-transform:uppercase;letter-spacing:.6px;margin-bottom:7px}
.kpi>.k .v{font-size:27px;font-weight:700;color:var(--navy);line-height:1;font-variant-numeric:tabular-nums}
.kpi>.k .s{font-size:11.5px;color:var(--mo);margin-top:6px}
.kpi>.k .s b{color:var(--xanh)}

.luoi{display:grid;grid-template-columns:minmax(330px,1.2fr) repeat(2,minmax(260px,1fr));gap:14px;align-items:start}
.o{background:#fff;border-radius:18px;box-shadow:0 2px 12px rgba(31,56,100,.045);overflow:hidden}
.o .dau{display:flex;align-items:center;padding:14px 17px 0}
.o .dau .l{font-size:10px;color:var(--mo);letter-spacing:1.1px;text-transform:uppercase}
.o .dau a{margin-left:auto;font-size:12px;color:var(--navy2);cursor:pointer;font-weight:600}
.o h3{font-size:16px;padding:2px 17px 12px;font-weight:700}
.o .than{padding:0 17px 16px}
.o .trong{padding:26px 17px 30px;text-align:center;color:var(--mo);font-size:13px}

/* Dải tổng hợp dùng ở Bộ môn, Học phí, Chi tiêu và Phê duyệt. */
.ba{display:grid;grid-template-columns:repeat(auto-fit,minmax(210px,1fr));gap:12px;margin-bottom:16px}
.ba>.o{padding:16px 18px;min-height:104px;border:1px solid rgba(221,229,240,.85);overflow:hidden}
.ba>.o .l{font-size:11px;color:var(--mo);text-transform:uppercase;letter-spacing:.65px;margin-bottom:9px}
.ba>.o .v{font-size:24px;font-weight:750;color:var(--navy);font-variant-numeric:tabular-nums;line-height:1.1}
.ba>.o .s{font-size:12px;color:var(--mo);margin-top:7px}
.ba>.o.xanh{border-top:3px solid var(--xanh)}
.ba>.o.canh-bao{border-top:3px solid var(--cam)}

.lich-i{display:flex;align-items:center;gap:12px;min-height:56px;padding:10px 0;border-bottom:1px solid #EDF1F7}
.lich-i:last-child{border:0}
.lich-i .gio{font-size:12px;color:var(--mo);width:42px;flex-shrink:0;padding-top:2px;font-variant-numeric:tabular-nums}
.lich-i .cham{width:9px;height:9px;border-radius:50%;border:2.5px solid var(--navy2);flex-shrink:0}
.lich-i.xong .cham{background:var(--xanh);border-color:var(--xanh)}
.lich-i b{font-size:13.5px;display:block}
.lich-i small{font-size:11.5px;color:var(--mo)}
.lich-i .tag{margin-left:auto;min-height:28px;display:inline-flex;align-items:center;justify-content:center;flex-shrink:0}

.tag{font-size:10.5px;padding:2px 9px;border-radius:20px;font-weight:600;white-space:nowrap}
.tag.t{background:#EDF5FC;color:var(--navy);border:1px solid rgba(46,116,181,.28)}
.tag.k{background:var(--vnhat);color:var(--cam);border:1px solid rgba(191,78,20,.2)}
.tag.x{background:var(--lnhat);color:#2c5d2c}
.tag.d{background:var(--cnhat);color:var(--cam)}
.tag.v{background:var(--vnhat);color:var(--cam)}

.thanh{height:8px;background:#E6ECF5;border-radius:5px;overflow:hidden;display:flex;margin:10px 0 9px}
.thanh i{display:block;height:100%}
.chu-thich{display:flex;gap:16px;font-size:11.5px;color:var(--mo);flex-wrap:wrap}
.chu-thich span{display:flex;align-items:center;gap:5px}
.chu-thich em{width:8px;height:8px;border-radius:50%;font-style:normal}
.tien{font-size:25px;font-weight:700;color:var(--navy);font-variant-numeric:tabular-nums}
.tien small{font-size:12.5px;color:var(--mo);font-weight:400}

.vong{display:flex;align-items:center;gap:16px}
.vong svg{flex-shrink:0}
.vong .gt{font-size:19px;font-weight:700;fill:var(--navy)}

/* Biểu đồ thuần CSS: nhẹ, không cần tải thư viện ngoài. */
.donut-wrap{display:flex;align-items:center;gap:18px;min-height:96px}
.donut{--pct:0;width:92px;height:92px;border-radius:50%;flex-shrink:0;position:relative;
  background:conic-gradient(var(--navy2) calc(var(--pct)*1%),var(--cnhat) 0)}
.donut::after{content:'';position:absolute;inset:13px;border-radius:50%;background:#fff}
.donut b{position:absolute;inset:0;display:grid;place-items:center;z-index:1;color:var(--navy);font-size:18px}
.chart-list{display:grid;gap:10px}
.chart-row{display:grid;grid-template-columns:58px minmax(90px,1fr) 38px;align-items:center;gap:9px;font-size:12px}
.chart-row .label{font-weight:650;color:var(--navy)}
.chart-row .track{height:9px;background:#EDF1F7;border-radius:999px;overflow:hidden}
.chart-row .track i{display:block;height:100%;border-radius:999px;background:linear-gradient(90deg,var(--navy),var(--navy2))}
.chart-row .value{text-align:right;font-variant-numeric:tabular-nums;color:var(--mo);font-weight:700}
.capacity{margin-top:7px;height:5px;background:#EDF1F7;border-radius:999px;overflow:hidden}
.capacity i{display:block;height:100%;border-radius:999px;background:var(--navy2)}

/* ══ BẢNG ══ */
.card{background:#fff;border-radius:18px;box-shadow:0 2px 12px rgba(31,56,100,.045);
  overflow-x:auto;overflow-y:visible}
.card.calendar{overflow:auto;max-height:calc(100vh - var(--tb) - 170px)}
table{border-collapse:separate;border-spacing:0;width:100%;font-size:13px}
th,td{padding:9px 12px;border-bottom:1px solid #EFF2F7;white-space:nowrap}
thead th{background:#F7F9FC;position:sticky;top:0;z-index:5;font-size:10.5px;font-weight:700;
  color:var(--mo);text-transform:uppercase;letter-spacing:.5px;box-shadow:0 1px 0 var(--vien);text-align:center}
tbody tr:nth-child(even) td{background:#FAFBFD}
tbody tr:hover td,tbody tr:hover .stick{background:var(--xnhat)}
tfoot td{background:#F7F9FC;font-weight:700;border-top:2px solid var(--navy2);position:sticky;bottom:0;z-index:4}
.calendar tbody tr:hover .stick.c3,.calendar tbody tr.active-row .stick.c3{font-weight:600;color:var(--navy)}
.calendar tbody tr.active-row td,.calendar tbody tr.active-row .stick{background:var(--xnhat)!important}
.calendar tfoot .sum-label{position:sticky;left:0;z-index:6;min-width:346px;text-align:right;
  padding-right:20px;border-right:1px solid var(--vien);background:#F7F9FC}
.left{text-align:left!important}.center{text-align:center!important}.actions{text-align:center;white-space:nowrap}
.stick{position:sticky;background:#fff;z-index:3}
.stick.c1{left:0;width:38px;min-width:38px;max-width:38px}
.stick.c2{left:38px;width:126px;min-width:126px;max-width:126px}
.stick.c3{left:164px;width:182px;min-width:182px;max-width:182px;overflow:hidden;
  text-overflow:ellipsis;border-right:1px solid var(--vien)}
tbody tr:nth-child(even) .stick{background:#FAFBFD}
.ma{font-family:ui-monospace,Consolas,monospace;font-size:11.5px;color:var(--navy2);font-weight:600}
.stt{color:#A9B3C6;font-size:11.5px}
.nm{font-weight:600}
.money{text-align:right;font-variant-numeric:tabular-nums;font-weight:600;color:var(--cam2)}
.tot{text-align:center}
.gd td:first-child{box-shadow:inset 3px 0 0 var(--cam)}
.gd td:first-child{border-top-left-radius:10px;border-bottom-left-radius:10px}
.gd .ma{color:var(--cam2)}

td.d,th.d{text-align:center;padding:0;width:32px;min-width:32px}
th.d{font-size:11px;line-height:1.2;padding:6px 0;font-weight:600}
th.d small{display:block;font-size:9px;color:#A9B3C6}
th.d.we{color:var(--cam2)}
th.d.today{background:var(--xnhat);box-shadow:inset 0 3px 0 var(--navy2)}
td.d div{height:32px;display:grid;place-items:center;cursor:pointer;font-size:13.5px;user-select:none}
td.d div:hover{background:var(--xnhat)}
td.d div.c1{color:var(--navy)}
td.d div.c2,td.d div.c3{color:var(--cam2);font-weight:700}
td.d.hi,th.d.hi{background:#F4F7FD}

/* ══ ĐIỀU KHIỂN ══ */
.bar{display:flex;gap:9px;flex-wrap:wrap;align-items:center;padding:0 0 15px}
.sort-label{margin-left:auto;display:flex;align-items:center;gap:8px;color:var(--mo);font-size:12.5px}
.sort-label select{min-width:138px}
select,input,textarea{padding:8px 13px;border:1px solid var(--vien);border-radius:12px;font-size:13px;
  font-family:inherit;color:var(--chu);background:#fff;outline:none}
select:focus,input:focus{border-color:var(--navy2)}
.btn{background:var(--navy);color:#fff;border:none;padding:9px 18px;border-radius:999px;font-size:13px;
  font-weight:600;cursor:pointer;font-family:inherit}
.btn:hover{background:#16294a}
.btn.o{background:#fff;color:var(--navy);border:1px solid var(--vien)}
.btn.o:hover{background:#F7F9FD}
.btn.g{background:var(--xanh)}.btn.g:hover{background:#26824c}
.pill{margin-left:auto;font-size:12.5px;color:var(--mo)}
.sync{display:inline-flex;align-items:center;gap:6px;color:var(--xanh);font-size:12px;font-weight:600}
.sync::before{content:'';width:7px;height:7px;border-radius:50%;background:var(--xanh)}
.form{background:#fff;border-radius:18px;padding:20px;margin-bottom:15px;
  box-shadow:0 2px 12px rgba(31,56,100,.045);border:1px solid var(--vien)}
.form h3{font-size:14.5px;margin-bottom:14px;color:var(--navy)}
.form .sub{font-size:12px;color:var(--mo);margin:-8px 0 14px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:12px;margin-bottom:12px}
.f label{display:block;font-size:10.5px;font-weight:700;color:var(--mo);margin-bottom:4px;
  text-transform:uppercase;letter-spacing:.4px}
.f input,.f select{width:100%}
.lops{display:flex;flex-wrap:wrap;gap:6px}
.lops label{display:flex;align-items:center;gap:5px;background:#F7F9FD;border:1px solid var(--vien);
  border-radius:20px;padding:5px 11px;font-size:12.5px;cursor:pointer;text-transform:none;
  letter-spacing:0;color:var(--chu);font-weight:600;margin:0}
.lops label:has(input:checked){background:var(--xnhat);border-color:var(--navy2)}
.lops input{width:auto}
.cam{background:#FDF3EF;border-left:4px solid var(--cam);border-radius:12px;padding:11px 14px;
  font-size:13px;margin-bottom:12px;line-height:1.55}
.bao{padding:11px 14px;border-radius:12px;font-size:13px;margin-bottom:12px;line-height:1.5}
.bao.ok{background:var(--lnhat);border:1px solid #86C79B}
.bao.er{background:var(--cnhat);border:1px solid #E5A886;color:var(--do)}
.hint{font-size:12.5px;color:var(--mo);margin:11px 2px;line-height:1.6}
.empty{padding:44px;text-align:center;color:var(--mo)}
.empty-state{padding:42px 22px;text-align:center;color:var(--mo)}
.empty-state .icon{width:42px;height:42px;border-radius:14px;background:var(--lnhat);color:var(--xanh);
  display:grid;place-items:center;margin:0 auto 12px;font-size:20px;font-weight:800}
.empty-state b{display:block;color:var(--navy);font-size:14px;margin-bottom:5px}
.chip-more{display:inline-block;margin-left:4px;color:var(--navy2);font-size:11px;font-weight:700}
.ck{display:inline-block;cursor:pointer;position:relative;width:20px;height:20px}
.ck input{position:absolute;opacity:0;width:0;height:0}
.ck span{position:absolute;inset:0;border:1.8px solid var(--vien);border-radius:8px;background:#fff}
.ck input:checked+span{background:var(--navy2);border-color:var(--navy2)}
.ck.d input:checked+span{background:var(--xanh);border-color:var(--xanh)}
.ck input:checked+span::after{content:'';position:absolute;left:6px;top:2px;width:5px;height:10px;
  border:solid #fff;border-width:0 2.5px 2.5px 0;transform:rotate(45deg)}
.khi{font-size:10px;color:var(--mo);margin-top:2px;white-space:nowrap}
.tai{position:fixed;inset:0;background:rgba(245,247,251,.72);display:grid;place-items:center;
  z-index:99;font-size:13.5px;color:var(--navy2)}
.dot{width:26px;height:26px;border:3px solid #DDE5F0;border-top-color:var(--navy2);border-radius:50%;
  animation:q .7s linear infinite;margin:0 auto 10px}
@keyframes q{to{transform:rotate(360deg)}}

/* ══ ĐĂNG NHẬP ══ */
#man{min-height:100vh;display:grid;place-items:center;background:var(--nen);padding:20px}
.hop{background:#fff;border-radius:24px;box-shadow:0 10px 40px rgba(31,56,100,.09);padding:34px 32px;
  max-width:420px;width:100%}
.hop .lgb{width:96px;height:96px;object-fit:contain;display:block;margin:0 auto 18px}
.hop h2{font-size:19px;margin-bottom:6px;text-align:center}
.hop p{font-size:13.5px;color:var(--mo);line-height:1.6;margin-bottom:18px;text-align:center}
.hop input{width:100%;margin-bottom:11px;padding:11px 13px;font-size:14px}
.hop .btn{width:100%;padding:11px;font-size:14px}
.logo{font-weight:800;font-size:15px;color:var(--navy);letter-spacing:.5px;margin-bottom:20px}
.ai{background:#fff;border:1px solid var(--vien);border-radius:999px;padding:7px 14px;font-size:12.5px;
  color:var(--chu);font-family:inherit;cursor:pointer}
.ai:hover{background:#F7F9FD}
.cho{background:var(--cam);color:#fff;font-size:10.5px;font-weight:700;border-radius:14px;
  padding:1px 6px;margin-left:6px}
.moi{background:#FDF3EF;border-left:4px solid var(--cam);border-radius:12px;padding:11px 14px;
  font-size:13px;margin-bottom:12px}
b.n{color:var(--cam2)}
@media(max-width:900px){
  #app{grid-template-columns:1fr}
  aside{transform:translateX(-100%);transition:.2s}
  aside.mo{transform:none}
  main{grid-column:1}
  .nav-toggle{display:grid;place-items:center}
  .noi{padding:16px 14px 38px}
  .luoi{grid-template-columns:1fr}
  .hero .kh{display:none}
  .toi .tt{display:none}
}
@media(max-width:1280px){.luoi{grid-template-columns:repeat(2,minmax(280px,1fr))}}
@media(max-width:900px){.luoi{grid-template-columns:1fr}}