:root{
  --bg:#f4f6f9; --card:#fff; --text:#1d2433; --muted:#667085; --line:#e4e7ec;
  --brand:#2563eb; --brand-soft:#e8efff; --side:#0f1b33; --side-text:#c7d2e6;
  --ok:#16a34a; --ok-soft:#e7f6ec; --warn:#d97706; --warn-soft:#fdf3e2; --bad:#dc2626; --bad-soft:#fdeaea;
}
*{box-sizing:border-box}
body{margin:0;font-family:"Segoe UI",system-ui,-apple-system,Roboto,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:14px}
input,select,textarea{font:inherit;padding:9px 11px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--text);width:100%}
input:focus,select:focus{outline:2px solid var(--brand-soft);border-color:var(--brand)}
.btn{background:var(--brand);color:#fff;border:0;padding:9px 16px;border-radius:8px;cursor:pointer;font:inherit;font-weight:600}
.btn:disabled{opacity:.6;cursor:wait}
.btn.ghost{background:#fff;color:var(--text);border:1px solid var(--line)}
.btn.ok{background:var(--ok)} .btn.bad{background:var(--bad)}
.btn.sm{padding:5px 10px;font-size:13px}
.btn.full{width:100%}
.link{background:none;border:0;color:var(--brand);cursor:pointer;font:inherit;padding:0}
.muted{color:var(--muted)}
.hidden{display:none!important}
.msg{padding:10px 12px;border-radius:8px;margin-bottom:12px;font-size:13px}
.msg.err{background:var(--bad-soft);color:var(--bad)}
.msg.ok{background:var(--ok-soft);color:var(--ok)}
.msg.info{background:var(--brand-soft);color:var(--brand)}
.tag{display:inline-block;padding:2px 9px;border-radius:99px;font-size:12px;font-weight:600}
.tag.ok{background:var(--ok-soft);color:var(--ok)} .tag.warn{background:var(--warn-soft);color:var(--warn)}
.tag.bad{background:var(--bad-soft);color:var(--bad)} .tag.info{background:var(--brand-soft);color:var(--brand)}

/* Trang đăng nhập */
.auth-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:16px}
.auth-card{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:28px;width:100%;max-width:400px;box-shadow:0 8px 30px rgba(15,27,51,.06)}
.auth-logo{font-size:22px;font-weight:700;margin-bottom:4px}
.tabs{display:flex;background:var(--bg);border-radius:10px;padding:4px;margin:18px 0}
.tabs button{flex:1;border:0;background:none;padding:8px;border-radius:8px;font:inherit;cursor:pointer;color:var(--muted)}
.tabs button.active{background:#fff;color:var(--text);font-weight:600;box-shadow:0 1px 3px rgba(0,0,0,.08)}
.field{display:flex;flex-direction:column;gap:5px;margin-bottom:12px;font-size:13px;color:var(--muted)}
.pw{position:relative}
.pw input{padding-right:78px}
.pw .eye{position:absolute;right:6px;top:50%;transform:translateY(-50%);border:0;background:var(--bg);color:var(--text);border-radius:6px;padding:5px 8px;font:inherit;font-size:12px;cursor:pointer}

/* Khung app */
.app{display:flex;min-height:100vh}
aside{width:230px;background:var(--side);color:var(--side-text);padding:20px 12px;flex-shrink:0;display:flex;flex-direction:column}
.logo{color:#fff;font-weight:700;font-size:18px;padding:0 10px 20px}
.logo small{display:block;font-weight:400;font-size:12px;color:var(--side-text);margin-top:2px}
nav button{display:flex;align-items:center;gap:10px;width:100%;background:none;border:0;color:var(--side-text);padding:11px 12px;border-radius:8px;font-size:14px;cursor:pointer;text-align:left}
nav button:hover{background:rgba(255,255,255,.06)}
nav button.active{background:var(--brand);color:#fff}
nav .ico{width:20px;text-align:center}
.nav-wrap{position:relative}
.nav-arrow{display:none}
nav .soon{margin-left:auto;white-space:nowrap;flex-shrink:0;font-size:10px;background:rgba(255,255,255,.12);padding:1px 6px;border-radius:99px}
.me{margin-top:auto;padding:12px 10px 0;border-top:1px solid rgba(255,255,255,.1);font-size:13px}
.me b{color:#fff;display:block}
main{flex:1;min-width:0;padding:22px 28px 40px}
h1{font-size:22px;margin:0}
.sub{color:var(--muted);margin:3px 0 18px}
.panel{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:16px;margin-bottom:16px}
.panel h2{font-size:16px;margin:0 0 12px}
.tbl-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;white-space:nowrap}
th,td{padding:10px;border-bottom:1px solid var(--line);text-align:left}
th{font-size:12px;text-transform:uppercase;letter-spacing:.03em;color:var(--muted);background:#fafbfc}
.form{display:grid;grid-template-columns:1fr 1fr;gap:10px 14px}
.form .full{grid-column:1/-1}
.empty{color:var(--muted);padding:14px;text-align:center}
td.empty{white-space:normal}

/* Hồ sơ nhân viên & hợp đồng (bước 3.2) */
.cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:12px;margin-bottom:16px}
.stat{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:14px 16px}
.stat .k{color:var(--muted);font-size:13px}
.stat .v{font-size:22px;font-weight:700;margin-top:4px}
.toolbar{display:flex;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.toolbar input,.toolbar select{width:auto}
.banner{background:#fff8e6;border:1px solid #f5d98b;color:#7a5600;padding:10px 12px;border-radius:8px;margin-bottom:16px;font-size:13px;line-height:1.6}
td.num,th.num{text-align:right;font-variant-numeric:tabular-nums}
tr.click{cursor:pointer} tr.click:hover td{background:#f8faff}
.modal-bg{position:fixed;inset:0;background:rgba(15,27,51,.45);display:flex;align-items:center;justify-content:center;padding:16px;z-index:10}
.modal{background:#fff;border-radius:14px;max-width:640px;width:100%;max-height:92vh;overflow:auto;padding:20px}
.modal h2{margin:0 0 4px;font-size:18px}
.slip-row{display:flex;justify-content:space-between;gap:12px;padding:7px 0;border-bottom:1px dashed var(--line)}
.slip-row span:last-child{text-align:right}
.slip-sec{margin-top:14px;font-weight:700;color:var(--brand);display:flex;justify-content:space-between;align-items:center}
.form-sec{grid-column:1/-1;font-weight:700;color:var(--brand);margin-top:6px}
.actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end;margin-top:16px}
.ct-card{border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin-top:8px}
.ct-card .top{display:flex;justify-content:space-between;gap:8px;flex-wrap:wrap;align-items:center}
.ct-card .meta{color:var(--muted);font-size:13px;margin-top:4px;line-height:1.6}
.check{flex-direction:row!important;align-items:center;gap:8px!important;color:var(--text)!important}
.check input{width:auto}

/* Chấm công (bước 3.4) */
.cc-today{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap}
.cc-clock{font-size:40px;font-weight:700;font-variant-numeric:tabular-nums;margin:2px 0 6px}
.cc-btns{display:flex;gap:10px;flex-wrap:wrap}
.btn.big{padding:14px 22px;font-size:16px;border-radius:10px}
/* Bảng lương (bước 3.5) */
tfoot td{border-top:2px solid var(--text);background:#fafbfc}
.slip-row.total{font-weight:700;font-size:17px;border-bottom:0;border-top:2px solid var(--text);margin-top:6px;padding-top:10px;color:var(--brand)}
details summary{font-size:13px;margin-bottom:4px}
@media print{
  body{background:#fff}
  body > *:not(#modal){display:none!important}
  #modal{position:static;background:none;padding:0;display:block}
  #modalBox{max-width:none!important;max-height:none;overflow:visible;box-shadow:none;padding:0}
  .no-print,#mErr{display:none!important}
  details{display:block} details > *{display:block}
}
@media (max-width:820px){
  .cc-btns{width:100%} .cc-btns .btn{flex:1}
  .cc-clock{font-size:34px}
  .cards{grid-template-columns:1fr 1fr;gap:8px} .stat{padding:10px 12px} .stat .v{font-size:19px}
}
@keyframes goiY{0%,100%{transform:translateX(0)}50%{transform:translateX(4px)}}
@media (max-width:820px){
  .app{flex-direction:column}
  aside{width:100%;padding:12px}
  .logo{padding:0 4px 10px}
  nav{display:flex;overflow-x:auto;gap:4px;scrollbar-width:none;-webkit-overflow-scrolling:touch}
  nav::-webkit-scrollbar{display:none}
  /* Mũi tên báo còn mục menu phía sau / phía trước */
  .nav-arrow{display:flex;align-items:center;position:absolute;top:0;bottom:0;width:56px;border:0;padding:0;cursor:pointer;z-index:2;
    opacity:0;pointer-events:none;transition:opacity .25s;-webkit-tap-highlight-color:transparent}
  .nav-arrow.show{opacity:1;pointer-events:auto}
  .nav-arrow.right{right:0;justify-content:flex-end;background:linear-gradient(to right,rgba(15,27,51,0),var(--side) 60%)}
  .nav-arrow.left{left:0;justify-content:flex-start;background:linear-gradient(to left,rgba(15,27,51,0),var(--side) 60%)}
  .nav-arrow span{width:32px;height:32px;border-radius:50%;display:flex;align-items:center;justify-content:center;
    background:#fff;color:var(--brand);box-shadow:0 2px 8px rgba(0,0,0,.35)}
  .nav-arrow:active span{transform:scale(.92)}
  .nav-arrow.right.show span{animation:goiY 1.6s ease-in-out 3}
  @media (prefers-reduced-motion:reduce){.nav-arrow.right.show span{animation:none}}
  nav button{white-space:nowrap;width:auto}
  .me{display:flex;align-items:center;justify-content:space-between;gap:8px;padding-top:10px;margin-top:10px}
  main{padding:16px}
  .form{grid-template-columns:1fr}
  .toolbar input,.toolbar select{flex:1 1 100%}
  .modal{padding:16px}
}

/* Trợ lý AI nhân sự */
.ai-fab{position:fixed;right:18px;bottom:18px;z-index:20;display:flex;align-items:center;gap:10px;background:linear-gradient(135deg,#2563eb,#7c3aed);color:#fff;border:0;border-radius:999px;padding:8px 18px 8px 8px;font:inherit;font-size:15px;font-weight:700;cursor:pointer;box-shadow:0 8px 24px rgba(79,70,229,.45);animation:aiNay 2.4s ease-in-out 3}
.ai-fab:hover{transform:translateY(-2px)}
.ai-fab-ico{width:46px;height:46px;border-radius:50%;background:rgba(255,255,255,.18);display:flex;align-items:center;justify-content:center}
.ai-fab-ico .robot{width:36px;height:36px;color:#fff}
.ai-fab-cham{position:absolute;top:4px;left:42px;width:12px;height:12px;border-radius:50%;background:#22c55e;border:2px solid #fff}
@keyframes aiNay{0%,100%{transform:translateY(0)}50%{transform:translateY(-6px)}}
@media (prefers-reduced-motion:reduce){.ai-fab{animation:none}}
.ai-head-l{display:flex;align-items:center;gap:10px}
.ai-ava{width:38px;height:38px;border-radius:50%;background:linear-gradient(135deg,#2563eb,#7c3aed);display:flex;align-items:center;justify-content:center;flex-shrink:0}
.ai-ava .robot{width:28px;height:28px;color:#fff}
.ai-ava.nho{width:26px;height:26px;float:left;margin:0 8px 2px 0}
.ai-ava.nho .robot{width:19px;height:19px}
.ai-panel{position:fixed;right:18px;bottom:18px;z-index:21;width:400px;max-width:calc(100vw - 24px);height:min(640px,calc(100vh - 36px));background:#fff;border:1px solid var(--line);border-radius:16px;box-shadow:0 12px 40px rgba(15,27,51,.22);display:flex;flex-direction:column;overflow:hidden}
.ai-head{display:flex;justify-content:space-between;align-items:flex-start;gap:8px;padding:12px 14px;background:var(--side);color:#fff}
.ai-diem{font-size:12px;color:var(--side-text);margin-top:2px}
.ai-diem b{color:#fff}
.ai-x{background:none;border:0;color:#fff;font-size:18px;cursor:pointer;padding:2px 6px}
.ai-tabs{display:flex;border-bottom:1px solid var(--line)}
.ai-tabs button{flex:1;background:none;border:0;padding:9px;font:inherit;cursor:pointer;color:var(--muted);border-bottom:2px solid transparent}
.ai-tabs button.active{color:var(--brand);border-bottom-color:var(--brand);font-weight:600}
.ai-body{flex:1;overflow-y:auto;padding:12px;background:var(--bg)}
.ai-msg{max-width:88%;padding:9px 12px;border-radius:12px;margin-bottom:10px;line-height:1.55;font-size:14px;word-wrap:break-word}
.ai-msg p{margin:0 0 6px} .ai-msg p:last-child{margin-bottom:0}
.ai-msg ul{margin:4px 0 6px;padding-left:18px}
.ai-msg a{color:var(--brand)}
.ai-msg.user{margin-left:auto;background:var(--brand);color:#fff;border-bottom-right-radius:4px}
.ai-msg.bot{background:#fff;border:1px solid var(--line);border-bottom-left-radius:4px}
.ai-msg.canh-bao{background:var(--warn-soft);border-color:#f5d98b}
.ai-tru{font-size:11px;color:var(--muted);text-align:right;margin-top:4px}
.ai-goiy{display:flex;flex-direction:column;gap:6px}
.ai-goiy button{text-align:left;background:var(--brand-soft);color:var(--brand);border:0;border-radius:8px;padding:7px 10px;font:inherit;font-size:13px;cursor:pointer}
.ai-cho span{animation:aiCham 1.2s infinite;opacity:.2} .ai-cho span:nth-child(2){animation-delay:.2s} .ai-cho span:nth-child(3){animation-delay:.4s}
@keyframes aiCham{50%{opacity:1}}
.ai-foot{border-top:1px solid var(--line);padding:8px 10px 10px;background:#fff}
.ai-muc{display:flex;gap:6px;margin-bottom:8px}
.ai-muc button{flex:1;background:#fff;border:1px solid var(--line);border-radius:8px;padding:5px 4px;font:inherit;font-size:12px;font-weight:600;cursor:pointer;color:var(--text);line-height:1.2}
.ai-muc button small{display:block;font-weight:400;color:var(--muted);font-size:11px}
.ai-muc button.active{border-color:var(--brand);background:var(--brand-soft);color:var(--brand)}
.ai-nhap{display:flex;gap:8px;align-items:flex-end}
.ai-nhap textarea{flex:1;resize:none;font:inherit;padding:8px 10px;border:1px solid var(--line);border-radius:8px;max-height:120px}
.ai-note{font-size:11px;color:var(--muted);margin-top:6px}
.ai-tin{background:#fff;border:1px solid var(--line);border-radius:10px;padding:10px 12px;margin-bottom:10px;font-size:14px;line-height:1.55}
.ai-tin ul{padding-left:18px;margin:4px 0}
.ai-tin-ngay{font-weight:700;color:var(--brand);margin-bottom:4px}
@media (max-width:820px){
  .ai-fab{right:12px;bottom:12px;padding:6px 14px 6px 6px;font-size:14px}
  .ai-fab-ico{width:40px;height:40px} .ai-fab-ico .robot{width:31px;height:31px}
  .ai-fab-cham{left:36px}
  .ai-panel{right:0;bottom:0;width:100vw;max-width:100vw;height:100dvh;border-radius:0}
}
@media print{.ai-fab,.ai-panel{display:none!important}}
.app main{padding-bottom:96px}
.het-han{background:var(--bad-soft);color:var(--bad);border:1px solid #f5b5b5;padding:10px 14px;border-radius:10px;margin-bottom:14px;font-size:14px;line-height:1.5}

/* Trang văn bản pháp lý (Chính sách bảo mật, Điều khoản) */
.vb-wrap{max-width:820px;margin:0 auto;padding:24px 16px 60px}
.vb{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:28px 32px;line-height:1.65;font-size:15px}
.vb h1{font-size:24px;margin:0 0 4px}
.vb h2{font-size:18px;margin:28px 0 8px;padding-top:12px;border-top:1px solid var(--line)}
.vb h3{font-size:15px;margin:18px 0 6px}
.vb ul,.vb ol{padding-left:22px;margin:6px 0}
.vb li{margin:3px 0}
.vb table{border-collapse:collapse;width:100%;margin:10px 0;font-size:14px}
.vb th,.vb td{border:1px solid var(--line);padding:7px 9px;text-align:left;vertical-align:top}
.vb th{background:var(--bg)}
.vb .tom-tat{background:var(--brand-soft);border-radius:10px;padding:12px 16px;margin:16px 0}
.vb .chu-y{background:var(--warn-soft);border-radius:10px;padding:10px 14px;margin:12px 0}
.vb-top{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-bottom:14px;flex-wrap:wrap}
.vb-top a{color:var(--brand);text-decoration:none;font-weight:600}
.can-dien{background:#fff3b0;color:#8a5a00;border-radius:4px;padding:0 4px;font-weight:600}
.bang-cuon{overflow-x:auto}
@media (max-width:600px){.vb{padding:20px 16px;font-size:14.5px}.vb h1{font-size:21px}}
@media print{.vb-top{display:none}.vb{border:0;padding:0}body{background:#fff}}

/* Ô đồng ý khi đăng ký */
.dong-y{display:flex;gap:9px;align-items:flex-start;font-size:13px;color:var(--text);margin:4px 0 14px;line-height:1.5}
.dong-y input{width:18px;height:18px;flex:0 0 auto;margin-top:1px;padding:0}
.dong-y a,.auth-foot a{color:var(--brand)}
.auth-foot{text-align:center;font-size:12px;color:var(--muted);margin-top:18px}

/* Link Chính sách bảo mật / Điều khoản trong app (cuối menu trái) */
.me-links{margin-top:14px;font-size:11.5px;line-height:1.4;display:flex;flex-wrap:wrap;gap:6px}
.me-links span{display:none}
.me-links a{color:#9fb3d9;text-decoration:none;border:1px solid rgba(159,179,217,.35);border-radius:99px;padding:3px 9px;transition:transform .15s ease,color .15s,border-color .15s,background .15s;display:inline-block}
.me-links a:hover,.me-links a:focus-visible{color:#fff;border-color:rgba(255,255,255,.7);background:rgba(255,255,255,.08);transform:scale(1.08)}
@media (prefers-reduced-motion:reduce){.me-links a{transition:none}.me-links a:hover{transform:none}}
@media (max-width:820px){.me{flex-wrap:wrap}.me-links{flex-basis:100%;margin-top:6px}}
@media print{.me-links{display:none}}