:root{
  --blue:#2563EB; --blue-2:#3B82F6; --blue-soft:#EFF4FF;
  --green:#10B981; --green-soft:#E7F8F1;
  --orange:#F59E0B; --orange-soft:#FEF3E2;
  --red:#EF4444; --red-soft:#FDECEC;
  --purple:#8B5CF6; --purple-soft:#F1ECFE;
  --cyan:#06B6D4; --cyan-soft:#E4F7FB;
  --ink:#111827; --muted:#6B7280; --line:#E8EDF5; --bg:#F4F7FE; --white:#fff;
  --r:14px; --shadow:0 1px 2px rgba(16,24,40,.04), 0 8px 24px rgba(16,24,40,.05);
}
*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:'Plus Jakarta Sans', -apple-system, 'Segoe UI', Roboto, Arial, sans-serif;
  background:var(--bg); color:var(--ink); font-size:14px; -webkit-font-smoothing:antialiased;
}
button,input,select{font-family:inherit}
a{color:inherit;text-decoration:none}
:focus-visible{outline:2px solid var(--blue); outline-offset:2px; border-radius:6px}
@media (prefers-reduced-motion: reduce){*{transition:none!important;animation:none!important}}

/* ============ AUTH ============ */
#auth{min-height:100vh;display:grid;grid-template-columns:1.1fr .9fr}
.auth-art{
  background:linear-gradient(150deg,#0B3FA8 0%,#2563EB 55%,#4F8BFF 100%);
  color:#fff;padding:56px 60px;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden;
}
.auth-art:after{
  content:"";position:absolute;right:-140px;bottom:-160px;width:520px;height:520px;border-radius:50%;
  background:radial-gradient(circle at 30% 30%, rgba(255,255,255,.28), rgba(255,255,255,0) 62%);
}
.auth-art h1{font-size:38px;line-height:1.18;font-weight:800;margin:0 0 14px;max-width:15ch}
.auth-art p{margin:0;color:#DCE8FF;max-width:44ch;line-height:1.65}
.auth-logo{display:flex;align-items:center;gap:11px;font-weight:800;font-size:20px;letter-spacing:-.3px}
.bulb{width:38px;height:38px;border-radius:11px;background:rgba(255,255,255,.16);display:grid;place-items:center}
.auth-stats{display:flex;gap:34px;position:relative;z-index:1}
.auth-stats b{display:block;font-size:26px;font-weight:800}
.auth-stats span{color:#C9DBFF;font-size:12.5px}
.auth-form{background:#fff;display:grid;place-items:center;padding:40px}
.auth-box{width:100%;max-width:392px}
.auth-box h2{margin:0 0 6px;font-size:26px;font-weight:800}
.auth-box .sub{color:var(--muted);margin:0 0 26px}
.field{margin-bottom:15px}
.field label{display:block;font-size:12.5px;font-weight:600;color:#374151;margin-bottom:6px}
.field input,.field select{
  width:100%;padding:12px 13px;border:1px solid var(--line);border-radius:11px;background:#FBFCFE;font-size:14px;transition:.15s;
}
.field input:focus,.field select:focus{border-color:var(--blue);background:#fff;outline:none;box-shadow:0 0 0 3px var(--blue-soft)}
.row-between{display:flex;justify-content:space-between;align-items:center;margin:6px 0 20px;font-size:13px}
.link{color:var(--blue);font-weight:600;cursor:pointer}
.btn{border:0;border-radius:11px;padding:12px 18px;font-weight:700;font-size:14px;cursor:pointer;transition:.15s}
.btn-primary{background:var(--blue);color:#fff;width:100%}
.btn-primary:hover{background:#1D4FD8}
.btn-ghost{background:#fff;border:1px solid var(--line);color:#374151}
.btn-ghost:hover{background:#F7F9FD}
.btn-sm{padding:8px 13px;font-size:12.5px;border-radius:9px}
.auth-alt{text-align:center;margin-top:20px;color:var(--muted);font-size:13px}
.demo-hint{margin-top:22px;background:var(--blue-soft);border:1px dashed #BFD3FF;border-radius:12px;padding:13px 15px;font-size:12.5px;color:#1E40AF;line-height:1.7}
.demo-hint b{font-weight:700}
.demo-accs{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-top:11px}
.demo-accs button{
  text-align:left;border:1px solid #CBDBFF;background:#fff;border-radius:9px;padding:8px 10px;cursor:pointer;transition:.14s;
}
.demo-accs button:hover{border-color:var(--blue);background:#F7FAFF;transform:translateY(-1px)}
.demo-accs button b{display:block;font-size:12.5px;color:var(--blue);font-weight:700}
.demo-accs button span{display:block;font-size:11px;color:#7C8595;margin-top:1px;line-height:1.4}
.err{background:var(--red-soft);color:#B91C1C;border-radius:10px;padding:10px 13px;font-size:13px;margin-bottom:14px;display:none}
@media(max-width:900px){#auth{grid-template-columns:1fr}.auth-art{display:none}}

/* ============ SHELL ============ */
#app{display:none;min-height:100vh}
.shell{display:flex;min-height:100vh}
.sidebar{
  width:266px;flex:0 0 266px;background:#fff;border-right:1px solid var(--line);
  display:flex;flex-direction:column;position:sticky;top:0;height:100vh;
}
.side-head{padding:20px 20px 14px;display:flex;align-items:center;gap:10px}
.side-head .mark{width:34px;height:34px;border-radius:10px;background:var(--blue);display:grid;place-items:center}
.side-head .name{font-weight:800;font-size:17px;letter-spacing:-.3px}
.side-head .name span{color:var(--blue)}
.side-search{padding:0 16px 12px;position:relative}
.side-search input{width:100%;padding:10px 12px 10px 36px;border:1px solid var(--line);border-radius:11px;background:#FAFBFE;font-size:13px}
.side-search svg{position:absolute;left:28px;top:10px;color:#9CA3AF}
.nav{flex:1;overflow-y:auto;padding:4px 12px 20px}
.nav::-webkit-scrollbar{width:6px}.nav::-webkit-scrollbar-thumb{background:#DDE4F0;border-radius:8px}
.nav-group{font-size:11px;font-weight:700;letter-spacing:.6px;color:#9AA3B2;text-transform:uppercase;padding:16px 12px 7px}
.nav-item{
  display:flex;align-items:center;gap:11px;padding:10px 12px;border-radius:11px;color:#5C6678;font-weight:600;font-size:13.5px;
  cursor:pointer;margin-bottom:2px;transition:.13s;border:0;background:none;width:100%;text-align:left;
}
.nav-item:hover{background:#F5F8FF;color:var(--ink)}
.nav-item.active{background:var(--blue-soft);color:var(--blue)}
.nav-item .ico{width:19px;height:19px;flex:0 0 19px;opacity:.9}
.nav-item .chev{margin-left:auto;opacity:.35}
.nav-item .dot{margin-left:auto;background:var(--orange);color:#fff;font-size:10.5px;font-weight:700;padding:1px 7px;border-radius:20px}

.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{
  background:#fff;border-bottom:1px solid var(--line);padding:0 26px;display:flex;align-items:center;gap:26px;
  height:66px;position:sticky;top:0;z-index:20;
}
.tabs{display:flex;gap:26px;height:100%}
.tab{
  display:flex;align-items:center;font-weight:600;color:#7A8494;cursor:pointer;border:0;background:none;font-size:14.5px;
  border-bottom:2.5px solid transparent;padding:0 2px;
}
.tab.active{color:var(--blue);border-bottom-color:var(--blue);font-weight:700}
.top-right{margin-left:auto;display:flex;align-items:center;gap:14px}
.chip-pro{background:#FFF6E0;color:#B45309;font-weight:700;font-size:12.5px;padding:7px 13px;border-radius:20px;display:flex;gap:7px;align-items:center}
.avatar{width:36px;height:36px;border-radius:50%;background:linear-gradient(135deg,#3B82F6,#8B5CF6);color:#fff;display:grid;place-items:center;font-weight:700;font-size:13.5px}
.user-btn{display:flex;align-items:center;gap:10px;border:0;background:none;cursor:pointer;font-weight:600;font-size:13.5px;position:relative}
.menu{
  position:absolute;right:0;top:46px;background:#fff;border:1px solid var(--line);border-radius:13px;box-shadow:var(--shadow);
  min-width:212px;padding:7px;display:none;z-index:60;text-align:left;
}
.menu.open{display:block}
.menu .mi{padding:9px 12px;border-radius:9px;font-size:13.5px;font-weight:600;color:#4B5563;cursor:pointer}
.menu .mi:hover{background:#F5F8FF;color:var(--blue)}
.menu .mhead{padding:10px 12px 8px;border-bottom:1px solid var(--line);margin-bottom:5px}
.menu .mhead b{display:block;font-size:13.5px}
.menu .mhead span{font-size:12px;color:var(--muted)}

.content{padding:24px 26px 44px;flex:1}
.page-head{display:flex;align-items:flex-start;gap:16px;margin-bottom:20px;flex-wrap:wrap}
.page-head h1{margin:0 0 4px;font-size:23px;font-weight:800;letter-spacing:-.4px}
.page-head p{margin:0;color:var(--muted);font-size:13.5px}
.page-actions{margin-left:auto;display:flex;gap:9px;align-items:center;flex-wrap:wrap}
.btn-ai{
  background:linear-gradient(135deg,#2563EB,#7C3AED);color:#fff;border:0;border-radius:11px;padding:10px 16px;
  font-weight:700;font-size:13px;cursor:pointer;display:flex;align-items:center;gap:8px;box-shadow:0 6px 16px rgba(79,70,229,.22)
}
.btn-ai:hover{filter:brightness(1.06)}

/* ============ CARDS ============ */
.grid{display:grid;gap:16px;margin-bottom:16px}
.g4{grid-template-columns:repeat(4,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g2{grid-template-columns:repeat(2,1fr)}
.g21{grid-template-columns:1.85fr 1fr}
.g12{grid-template-columns:1fr 1.6fr}
@media(max-width:1250px){.g4{grid-template-columns:repeat(2,1fr)}.g21,.g12,.g3{grid-template-columns:1fr}}
@media(max-width:760px){.grid{grid-template-columns:1fr!important}.sidebar{display:none}.content{padding:16px}}

.card{background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}
.kpi{padding:18px}
.kpi-top{display:flex;justify-content:space-between;align-items:flex-start;gap:10px}
.kpi-title{font-weight:700;font-size:14.5px;color:#1F2937;line-height:1.35}
.kpi-icon{width:44px;height:44px;border-radius:12px;display:grid;place-items:center;flex:0 0 44px}
.kpi-add{display:inline-flex;align-items:center;gap:5px;color:var(--blue);font-weight:600;font-size:12.5px;margin-top:7px;cursor:pointer}
.kpi-val{font-size:27px;font-weight:800;margin:9px 0 8px;letter-spacing:-.7px}
.kpi-foot{display:flex;align-items:center;gap:9px;font-size:12.5px;color:#8A93A3;flex-wrap:wrap}
.delta{font-weight:700;display:inline-flex;align-items:center;gap:4px}
.delta.up{color:var(--green)} .delta.down{color:var(--red)} .delta.flat{color:var(--muted)}
.kpi-foot .period{margin-left:auto;color:var(--green);font-weight:700;cursor:pointer}

.mini{padding:15px 17px;display:flex;align-items:center;gap:13px}
.mini .kpi-icon{width:42px;height:42px;flex:0 0 42px;border-radius:12px}
.mini .m-t{font-weight:700;font-size:14px}
.mini .m-a{color:var(--blue);font-size:12.5px;font-weight:600;margin-top:3px;cursor:pointer}
.mini .m-v{margin-left:auto;font-size:22px;font-weight:800;letter-spacing:-.5px}

.panel{padding:18px 20px 20px}
.panel-head{display:flex;align-items:center;gap:12px;margin-bottom:16px;flex-wrap:wrap}
.panel-title{font-weight:800;font-size:16.5px;letter-spacing:-.3px}
.panel-sub{font-size:12.5px;color:var(--muted);margin-top:2px}
.panel-head .right{margin-left:auto;display:flex;gap:8px;align-items:center}
.seg{display:flex;background:#F2F5FA;border-radius:10px;padding:3px}
.seg button{border:0;background:none;padding:6px 13px;border-radius:8px;font-size:12.5px;font-weight:700;color:#7C8595;cursor:pointer}
.seg button.on{background:var(--blue);color:#fff}
.pill{background:#F2F5FA;color:#5C6678;font-weight:700;font-size:12.5px;padding:7px 12px;border-radius:9px;border:0;cursor:pointer}

/* ============ TABLE ============ */
.tbl-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:13.5px}
th{
  text-align:left;font-weight:700;color:#8A93A3;font-size:11.5px;text-transform:uppercase;letter-spacing:.4px;
  padding:0 14px 11px;border-bottom:1px solid var(--line);white-space:nowrap;
}
td{padding:13px 14px;border-bottom:1px solid #F2F5FA;white-space:nowrap}
tr:last-child td{border-bottom:0}
tbody tr:hover{background:#FAFCFF}
td.num,th.num{text-align:right}
.badge{font-size:11.5px;font-weight:700;padding:4px 10px;border-radius:20px;display:inline-block}
.b-green{background:var(--green-soft);color:#047857}
.b-orange{background:var(--orange-soft);color:#B45309}
.b-red{background:var(--red-soft);color:#B91C1C}
.b-blue{background:var(--blue-soft);color:#1D4ED8}
.b-gray{background:#F1F3F7;color:#5C6678}
.b-purple{background:var(--purple-soft);color:#6D28D9}
.avatar-sm{width:28px;height:28px;border-radius:50%;display:inline-grid;place-items:center;font-size:11px;font-weight:700;color:#fff;margin-right:9px;vertical-align:middle}

/* ============ CHART HELPERS ============ */
.legend{display:flex;gap:9px;flex-wrap:wrap;margin-top:14px;justify-content:center}
.legend span{display:flex;align-items:center;gap:6px;background:#F5F8FF;border-radius:8px;padding:6px 11px;font-size:12px;font-weight:600;color:#5C6678}
.legend i{width:9px;height:9px;border-radius:3px;display:block}
.hbar-row{display:grid;grid-template-columns:120px 1fr 82px;align-items:center;gap:12px;margin-bottom:13px;font-size:13px}
.hbar-track{display:block;background:#F2F5FA;border-radius:20px;height:10px;overflow:hidden}
.hbar-fill{display:block;height:100%;border-radius:20px;min-width:4px;transition:width .3s}
.hbar-row b{text-align:right;font-weight:700}
.prog{background:#F2F5FA;border-radius:20px;height:7px;overflow:hidden;min-width:70px}
.prog i{display:block;height:100%;border-radius:20px}

.empty{
  border:1.5px dashed #D6DEEC;border-radius:var(--r);padding:44px 30px;text-align:center;background:#FBFCFE;
}
.empty h3{margin:14px 0 6px;font-size:16.5px;font-weight:800}
.empty p{margin:0 auto 18px;color:var(--muted);max-width:52ch;line-height:1.7;font-size:13.5px}
.note{background:var(--orange-soft);border:1px solid #FBDCA7;border-radius:12px;padding:13px 16px;font-size:13px;color:#92400E;line-height:1.65;margin-bottom:16px}
.note b{font-weight:800}

/* link tiles for Quản trị */
.tiles{display:grid;grid-template-columns:repeat(3,1fr);gap:14px}
@media(max-width:1000px){.tiles{grid-template-columns:1fr}}
.tile{display:flex;gap:13px;align-items:flex-start;padding:16px;border:1px solid var(--line);border-radius:13px;background:#fff;cursor:pointer;transition:.15s}
.tile:hover{border-color:#C7D8FF;box-shadow:var(--shadow);transform:translateY(-1px)}
.tile b{display:block;font-size:14px;margin-bottom:3px}
.tile span{font-size:12.5px;color:var(--muted);line-height:1.55}
.tile-foot{display:flex;align-items:center;gap:8px;margin-top:9px;font-size:11.5px;color:#9AA3B2;font-weight:600}
.tile-foot .cnt{background:var(--blue-soft);color:var(--blue);padding:2px 8px;border-radius:20px;font-weight:700}

/* --- tài liệu --- */
.doc-row{display:flex;gap:12px;align-items:flex-start;padding:13px;border:1px solid var(--line);border-radius:12px;margin-bottom:10px;background:#fff}
.doc-row:hover{border-color:#C7D8FF}
.doc-ic{width:38px;height:38px;border-radius:10px;display:grid;place-items:center;flex:0 0 38px}
.doc-main{flex:1;min-width:0}
.doc-main b{display:block;font-size:13.5px;margin-bottom:3px;word-break:break-word}
.doc-meta{font-size:11.5px;color:#8A93A3;line-height:1.6}
.doc-meta a{color:var(--blue);word-break:break-all}
.doc-acts{display:flex;gap:6px;flex-shrink:0}
.iconbtn{border:1px solid var(--line);background:#fff;width:30px;height:30px;border-radius:8px;cursor:pointer;display:grid;place-items:center;color:#7C8595}
.iconbtn:hover{border-color:var(--blue);color:var(--blue);background:#F7FAFF}
.iconbtn.danger:hover{border-color:var(--red);color:var(--red);background:var(--red-soft)}
.confirm-bar{background:var(--red-soft);border:1px solid #F6C9C9;border-radius:12px;padding:12px 14px;margin-bottom:10px;display:flex;align-items:center;gap:10px;font-size:13px;color:#B91C1C}
.confirm-bar b{font-weight:700}
.confirm-bar .btns{margin-left:auto;display:flex;gap:7px}
.filebox{border:1.5px dashed #CBDBFF;border-radius:11px;padding:16px;text-align:center;background:#FAFCFF;cursor:pointer}
.filebox:hover{border-color:var(--blue);background:#F5F9FF}
.filebox p{margin:8px 0 0;font-size:12.5px;color:var(--muted)}
.filebox input{display:none}
.file-picked{display:flex;align-items:center;gap:10px;background:var(--green-soft);border-radius:11px;padding:11px 13px;font-size:13px;color:#047857;font-weight:600}
.file-picked span{margin-left:auto;cursor:pointer;color:#B91C1C;font-size:12px}
.doc-empty{text-align:center;padding:34px 20px;color:var(--muted);font-size:13.5px;line-height:1.7}

/* ============ DRAWER / MODAL ============ */
.overlay{position:fixed;inset:0;background:rgba(15,23,42,.42);display:none;z-index:90}
.overlay.open{display:block}
.drawer{
  position:fixed;top:0;right:0;height:100vh;width:520px;max-width:94vw;background:#fff;z-index:100;
  transform:translateX(100%);transition:transform .26s cubic-bezier(.4,0,.2,1);display:flex;flex-direction:column;
}
.drawer.open{transform:translateX(0)}
.drawer-head{padding:20px 22px;border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px}
.drawer-head b{font-size:16.5px;font-weight:800}
.drawer-head span{display:block;font-size:12.5px;color:var(--muted);margin-top:2px}
.drawer-body{padding:22px;overflow-y:auto;flex:1}
.x{margin-left:auto;border:0;background:#F2F5FA;width:32px;height:32px;border-radius:9px;cursor:pointer;font-size:16px;color:#6B7280}
.ai-block{border:1px solid var(--line);border-radius:13px;padding:16px;margin-bottom:14px}
.ai-block h4{margin:0 0 9px;font-size:14px;font-weight:800;display:flex;align-items:center;gap:8px}
.ai-block ul{margin:0;padding-left:19px;line-height:1.85;color:#4B5563;font-size:13.5px}
.ai-block ul li::marker{color:var(--blue)}
.flow{background:#0F172A;color:#93C5FD;border-radius:12px;padding:14px 16px;font-family:ui-monospace,Menlo,Consolas,monospace;font-size:12px;line-height:1.75;overflow-x:auto}
.flow .k{color:#FBBF24}

.modal{
  position:fixed;left:50%;top:50%;transform:translate(-50%,-46%);background:#fff;border-radius:17px;padding:26px;
  width:430px;max-width:94vw;z-index:100;display:none;box-shadow:0 24px 60px rgba(15,23,42,.22)
}
.modal.open{display:block;transform:translate(-50%,-50%)}
.modal h3{margin:0 0 5px;font-size:19px;font-weight:800}
.modal .sub{color:var(--muted);font-size:13px;margin:0 0 20px}
.modal-foot{display:flex;gap:10px;margin-top:20px}
.modal-foot .btn{flex:1}
.toast{
  position:fixed;bottom:26px;left:50%;transform:translateX(-50%) translateY(20px);background:#111827;color:#fff;
  padding:13px 20px;border-radius:12px;font-size:13.5px;font-weight:600;z-index:200;opacity:0;transition:.25s;pointer-events:none
}
.toast.show{opacity:1;transform:translateX(-50%) translateY(0)}