:root{
  --navy:#0f172a;--ink:#1e293b;--grey:#64748b;--muted:#94a3b8;--border:#e2e8f0;
  --bg:#f1f5f9;--surface:#ffffff;--surface-2:#f8fafc;--surface-3:#eef2f7;
  --primary:#4f46e5;--primary-2:#4338ca;--accent:#f59e0b;
  --green:#16a34a;--red:#dc2626;--amber:#d97706;--blue:#2563eb;
  --radius:12px;--shadow:0 1px 2px rgba(15,23,42,.06),0 1px 3px rgba(15,23,42,.08);
}
[data-theme="dark"]{
  --navy:#e2e8f0;--ink:#e2e8f0;--grey:#94a3b8;--muted:#64748b;--border:#293548;
  --bg:#0b1220;--surface:#111a2e;--surface-2:#16213a;--surface-3:#1c2a45;
  --primary:#818cf8;--primary-2:#6366f1;--accent:#fbbf24;
  --green:#4ade80;--red:#f87171;--amber:#fbbf24;--blue:#60a5fa;
  --shadow:0 1px 2px rgba(0,0,0,.4);
}
html{color-scheme:light}
[data-theme="dark"] html,[data-theme="dark"]{color-scheme:dark}
[data-theme="dark"] aside#side{background:#070d1a}
[data-theme="dark"] #nav .ni.active{background:var(--primary-2);color:#fff}
[data-theme="dark"] .login-box{background:var(--surface)}
[data-theme="dark"] .login-logo{background:#1e293b}
[data-theme="dark"] .pill-tabs button.active{background:var(--primary-2);border-color:var(--primary-2);color:#fff}
[data-theme="dark"] .btn.sec{background:var(--surface-2);color:var(--ink)}
[data-theme="dark"] .btn.danger{background:#3f1d1d;color:#fca5a5;border-color:#7f1d1d}
[data-theme="dark"] .b-green{background:#14532d;color:#86efac}[data-theme="dark"] .b-red{background:#7f1d1d;color:#fecaca}[data-theme="dark"] .b-amber{background:#78350f;color:#fde68a}[data-theme="dark"] .b-blue{background:#1e3a8a;color:#bfdbfe}
[data-theme="dark"] .warn-box{background:#3b2a05;border-color:#92400e}
[data-theme="dark"] .ok-box{background:#052e16;border-color:#166534}
[data-theme="dark"] .note-amber{background:#3b2a05;border-color:#92400e}
[data-theme="dark"] .hl{background:#3b2a05}
[data-theme="dark"] .tl-day.today{background:#1f1a0a}
[data-theme="dark"] .toast{background:#1e293b}
[data-theme="dark"] .modal{background:rgba(0,0,0,.65)}
[data-theme="dark"] input:focus,[data-theme="dark"] select:focus,[data-theme="dark"] textarea:focus{outline-color:#3730a3}
[data-theme="dark"] .p-card,[data-theme="dark"] .tl-day{background:var(--surface-2)}
.note-amber{background:#fffbeb;border-color:#fcd34d}
.hl{background:#fef3c7}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--ink);font:14px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;-webkit-font-smoothing:antialiased}
a{color:var(--primary)}
.hidden{display:none!important}
h1,h2,h3{margin:0 0 8px;color:var(--navy);line-height:1.3}
h3{font-size:15px}
.hint{color:var(--grey);font-size:12.5px;margin:4px 0 0}
.err{color:var(--red);font-size:13px;margin:6px 0}
b{font-weight:600}

/* ---- login ---- */
.login{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px;background:linear-gradient(160deg,#0f172a,#312e81)}
.login-box{background:var(--surface);border-radius:18px;padding:28px 26px;width:100%;max-width:380px;box-shadow:0 20px 60px rgba(0,0,0,.35)}
.login-logo{width:52px;height:52px;border-radius:14px;background:var(--navy);color:var(--accent);font-weight:800;font-size:26px;display:flex;align-items:center;justify-content:center;margin-bottom:12px}
.login-box h1{font-size:20px}
.login-lang{margin-top:14px;text-align:center;color:var(--grey);font-size:12.5px}
.lnk{background:none;border:none;color:var(--primary);cursor:pointer;font:inherit;padding:0}

/* ---- layout ---- */
.app{display:flex;min-height:100vh}
aside#side{width:232px;background:var(--navy);color:#cbd5e1;display:flex;flex-direction:column;position:sticky;top:0;height:100vh;flex-shrink:0}
.brand{display:flex;align-items:center;gap:10px;padding:18px 16px 12px;color:#fff;font-weight:700}
.brand-logo{width:32px;height:32px;border-radius:9px;background:var(--accent);color:var(--navy);display:flex;align-items:center;justify-content:center;font-weight:800}
#nav{flex:1;padding:6px 10px;overflow-y:auto}
#nav .ni{display:flex;align-items:center;gap:10px;padding:10px 12px;border-radius:9px;cursor:pointer;color:#cbd5e1;margin-bottom:2px;font-weight:500}
#nav .ni:hover{background:rgba(255,255,255,.06);color:#fff}
#nav .ni.active{background:var(--primary);color:#fff}
#nav .ni .ic{width:22px;text-align:center;font-size:16px}
.side-foot{padding:12px 16px;font-size:12px;color:var(--muted);border-top:1px solid rgba(255,255,255,.08)}
.content{flex:1;min-width:0;display:flex;flex-direction:column}
header{display:flex;align-items:center;gap:10px;padding:10px 20px;background:var(--surface);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:20}
.hd-title{font-weight:700;color:var(--navy);flex:1;font-size:15px}
.hd-right{display:flex;gap:6px;align-items:center}
.pill-btn{border:1px solid var(--border);background:var(--surface-2);border-radius:20px;padding:5px 12px;font:inherit;font-size:12.5px;font-weight:600;cursor:pointer;color:var(--ink)}
.pill-btn:hover{background:var(--surface-3)}
.icon-btn{border:none;background:none;font-size:20px;cursor:pointer;color:var(--ink);padding:2px 6px}
.menu-btn{display:none}
main{padding:20px;max-width:1240px;width:100%;margin:0 auto;flex:1}
.botnav{display:none}

/* ---- page head ---- */
.page-head{display:flex;flex-wrap:wrap;gap:12px;align-items:flex-start;justify-content:space-between;margin-bottom:16px}
.page-head h2{font-size:20px}
.page-head .sub{color:var(--grey);font-size:13px;margin:2px 0 0}
.page-acts{display:flex;gap:8px;flex-wrap:wrap}

/* ---- components ---- */
.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:16px;box-shadow:var(--shadow);margin-bottom:16px}
.card.flat{box-shadow:none}
.grid{display:grid;gap:12px}
.g2{grid-template-columns:repeat(2,minmax(0,1fr))}
.g3{grid-template-columns:repeat(3,minmax(0,1fr))}
.g4{grid-template-columns:repeat(4,minmax(0,1fr))}
.kpi{background:var(--surface-2);border:1px solid var(--border);border-radius:10px;padding:10px 12px}
.kpi .label{font-size:11.5px;color:var(--grey);text-transform:uppercase;letter-spacing:.03em}
.kpi .val{font-size:20px;font-weight:700;color:var(--navy);margin-top:2px}
.kpi .val.p{color:var(--primary)}
.kpi .val.small{font-size:14px}
.field{margin-bottom:12px}
.field label{display:block;font-size:12.5px;font-weight:600;color:var(--ink);margin-bottom:5px}
input,select,textarea{width:100%;border:1px solid var(--border);border-radius:9px;padding:9px 11px;font:inherit;background:var(--surface);color:var(--ink)}
input:focus,select:focus,textarea:focus{outline:2px solid #c7d2fe;border-color:var(--primary)}
input[type=checkbox],input[type=radio]{width:auto}
textarea{resize:vertical;min-height:60px}
.row{display:flex;gap:12px}
.row>.field{flex:1;min-width:0}
.btn{background:var(--primary);color:#fff;border:none;border-radius:9px;padding:9px 16px;font:inherit;font-weight:600;cursor:pointer;white-space:nowrap}
.btn:hover{background:var(--primary-2)}
.btn:disabled{opacity:.5;cursor:default}
.btn.sec{background:var(--surface-2);color:var(--ink);border:1px solid var(--border)}
.btn.sec:hover{background:var(--surface-3)}
.btn.danger{background:#fee2e2;color:var(--red);border:1px solid #fecaca}
.btn.sm{padding:5px 10px;font-size:12.5px}
.btn.wide{width:100%}
.link{color:var(--primary);cursor:pointer;font-weight:500}
.link:hover{text-decoration:underline}
.badge{display:inline-block;padding:2px 8px;border-radius:20px;font-size:11.5px;font-weight:600;background:var(--surface-3);color:var(--grey)}
.b-green{background:#dcfce7;color:#15803d}.b-red{background:#fee2e2;color:#b91c1c}.b-amber{background:#fef3c7;color:#b45309}.b-blue{background:#dbeafe;color:#1d4ed8}.b-grey{background:var(--surface-3);color:var(--grey)}
.pill-tabs{display:flex;gap:6px;flex-wrap:wrap;margin:0 0 14px}
.pill-tabs button{border:1px solid var(--border);background:var(--surface);border-radius:20px;padding:6px 13px;font:inherit;font-size:13px;font-weight:600;cursor:pointer;color:var(--ink)}
.pill-tabs button.active{background:var(--navy);color:#fff;border-color:var(--navy)}
.toolbar{display:flex;gap:8px;flex-wrap:wrap;align-items:center;margin-bottom:12px}
.toolbar input.filter,.toolbar select.filter{width:auto;min-width:160px}
.tablewrap{overflow-x:auto;border:1px solid var(--border);border-radius:10px}
table{width:100%;border-collapse:collapse;font-size:13px}
th{background:var(--surface-2);text-align:left;padding:9px 10px;font-size:12px;color:var(--grey);border-bottom:1px solid var(--border);white-space:nowrap}
td{padding:8px 10px;border-bottom:1px solid var(--border);vertical-align:top}
tr:last-child td{border-bottom:none}
td.num,th.num{text-align:right;white-space:nowrap}
.center{text-align:center}
.empty{padding:22px;text-align:center;color:var(--grey)}
.chip{display:inline-flex;align-items:center;gap:5px;padding:1px 9px;border-radius:20px;font-size:11.5px;font-weight:600}
.chip .dot{width:7px;height:7px;border-radius:50%}
.muted{color:var(--grey)}
.mono{font-family:ui-monospace,Consolas,monospace;font-size:12.5px}
.warn-box{border:1px solid #fcd34d;background:#fffbeb;border-radius:10px;padding:12px 14px;margin-bottom:14px}
.ok-box{border:1px solid #86efac;background:#f0fdf4;border-radius:10px;padding:12px 14px;margin-bottom:14px}
.avatar{width:56px;height:56px;border-radius:50%;object-fit:cover;background:var(--surface-3)}
details summary{cursor:pointer;font-weight:600;color:var(--navy)}
.copyable{cursor:pointer}
.copyable:hover{background:var(--surface-2)}
.bar{height:8px;background:var(--surface-3);border-radius:6px;overflow:hidden}
.bar>div{height:100%}
.delta-up{color:var(--green);font-weight:600}.delta-down{color:var(--red);font-weight:600}

/* tasks */
.p-body{display:grid;grid-template-columns:repeat(auto-fill,minmax(260px,1fr));gap:10px;padding:12px}
.p-card{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:10px 12px;border-left-width:3px}
.p-title{font-weight:600;color:var(--navy)}
.p-l1{display:flex;flex-wrap:wrap;gap:6px;align-items:center}
.p-sub{font-size:12px;color:var(--grey)}
.p-acts{display:flex;gap:10px;margin-top:8px;font-size:12.5px}
.p-act{cursor:pointer;color:var(--primary);font-weight:500}
.p-act.done{color:var(--green)}.p-act.del{color:var(--red)}

/* modal / toast */
.modal{position:fixed;inset:0;background:rgba(15,23,42,.5);display:flex;align-items:center;justify-content:center;padding:16px;z-index:50}
.modal-box{background:var(--surface);border-radius:16px;padding:22px;width:100%;max-width:560px;max-height:92vh;overflow:auto}
.actions{display:flex;gap:8px;justify-content:flex-end;margin-top:14px}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:var(--navy);color:#fff;padding:10px 16px;border-radius:10px;font-size:13px;z-index:60;box-shadow:0 10px 30px rgba(0,0,0,.3);max-width:90vw}
.toast.err{background:var(--red)}

/* ---- mobile ---- */
@media (max-width:860px){
  aside#side{position:fixed;left:-240px;transition:left .2s;z-index:40;height:100vh}
  aside#side.open{left:0;box-shadow:0 0 40px rgba(0,0,0,.4)}
  .menu-btn{display:inline-block}
  main{padding:14px 12px 76px}
  .g2,.g3,.g4{grid-template-columns:repeat(2,minmax(0,1fr))}
  .row{flex-direction:column;gap:0}
  .botnav{display:flex;position:fixed;left:0;right:0;bottom:0;background:var(--surface);border-top:1px solid var(--border);z-index:30;padding:4px 2px calc(4px + env(safe-area-inset-bottom))}
  .botnav .bi{flex:1;text-align:center;font-size:10.5px;color:var(--grey);padding:4px 2px;cursor:pointer;font-weight:600}
  .botnav .bi .ic{display:block;font-size:19px}
  .botnav .bi.active{color:var(--primary)}
  header{padding:8px 12px}
  .hd-title{font-size:14px}
  #hd_user{display:none}
}
@media (max-width:480px){.g3,.g4{grid-template-columns:1fr 1fr}}

/* menu nhóm */
.nsec{font-size:10.5px;letter-spacing:.08em;text-transform:uppercase;color:var(--muted);padding:12px 12px 4px}
/* timeline tuần */
.tl-week{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:8px}
.tl-day{background:var(--surface);border:1px solid var(--border);border-radius:10px;padding:8px;min-height:120px}
.tl-day.today{border-color:var(--accent);background:#fffdf5}
.tl-dh{font-size:12px;margin-bottom:6px;padding-bottom:4px;border-bottom:1px solid var(--border)}
.tl-day .p-card{padding:7px 9px}
.tl-day .p-title{font-size:12.5px}
@media (max-width:1100px){.tl-week{grid-template-columns:repeat(4,minmax(0,1fr))}}
@media (max-width:860px){.tl-week{grid-template-columns:1fr 1fr}}
@media (max-width:480px){.tl-week{grid-template-columns:1fr}.tl-day{min-height:auto}}

/* lịch tháng */
.cal{background:var(--surface);border:1px solid var(--border);border-radius:10px;overflow:hidden}
.cal-head{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));background:var(--surface-2);border-bottom:1px solid var(--border)}
.cal-head div{padding:6px 8px;font-size:12px;font-weight:600;color:var(--grey)}
.cal-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr))}
.cal-cell{min-height:96px;padding:6px;border-right:1px solid var(--border);border-bottom:1px solid var(--border);cursor:pointer;font-size:12px}
.cal-cell:nth-child(7n){border-right:none}
.cal-cell:hover{background:var(--surface-2)}
.cal-cell.out{background:var(--surface-3);opacity:.55}
.cal-cell.today{background:#fffdf5;box-shadow:inset 0 0 0 2px var(--accent)}
[data-theme="dark"] .cal-cell.today{background:#1f1a0a}
.cal-day{font-weight:700;color:var(--grey);margin-bottom:4px;font-size:12px}
.cal-chip{background:var(--surface-2);border:1px solid var(--border);border-left:3px solid var(--primary);border-radius:6px;padding:2px 6px;margin-bottom:3px;font-size:11.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;line-height:1.35}
.cal-chip:hover{background:var(--surface-3)}
.cal-dot{display:inline-block;width:7px;height:7px;border-radius:50%;margin-right:3px;vertical-align:middle}
@media (max-width:860px){.cal-cell{min-height:64px;padding:4px}.cal-chip{font-size:10.5px;padding:1px 4px}}

/* khu Timeline trong tab Dashboard & Timeline */
.tl-zone{border:2px solid var(--primary);border-radius:14px;margin-top:8px;overflow:hidden}
.tl-zone-head{display:flex;justify-content:space-between;align-items:center;gap:8px;padding:10px 14px;color:#fff;font-size:15px}
.tl-zone .toolbar{margin-bottom:10px}
.tl-zone .cal,.tl-zone .tl-day,.tl-zone .card{background:var(--surface)}