/* ============================================================
   TOPSKILLS · Chấm công & Tính lương — stylesheet
   ------------------------------------------------------------
   Bảng màu sáng là lựa chọn có chủ đích, không phải thiếu sót:
   đây là phần mềm bảng biểu dày số liệu, phiếu lương và báo cáo
   thường xuyên được in ra giấy. Mọi màu đều khai báo tường minh
   qua biến ở :root nên trang giữ đúng hình thức trên mọi nền.
   ============================================================ */

:root{
  --bg:#f4f6fa;
  --surface:#ffffff;
  --surface-2:#f8fafc;
  --border:#e2e8f0;
  --border-strong:#cbd5e1;
  --text:#0f172a;
  --text-2:#475569;
  --muted:#94a3b8;
  --brand:#1d4ed8;
  --brand-soft:#eff4ff;
  --brand-2:#3b82f6;
  --ok:#059669;
  --ok-soft:#ecfdf5;
  --warn:#b45309;
  --warn-soft:#fffbeb;
  --danger:#dc2626;
  --danger-soft:#fef2f2;
  --info:#0369a1;
  --info-soft:#f0f9ff;
  --radius:10px;
  --radius-sm:7px;
  --shadow:0 1px 2px rgba(15,23,42,.06), 0 4px 14px rgba(15,23,42,.05);
  --shadow-lg:0 10px 40px rgba(15,23,42,.18);
  --mono:"Cascadia Mono",Consolas,"SF Mono",Menlo,monospace;
  --sans:"Segoe UI",Inter,system-ui,-apple-system,"Helvetica Neue",Arial,sans-serif;
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  margin:0;font-family:var(--sans);background:var(--bg);color:var(--text);
  font-size:14px;line-height:1.5;-webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{margin:0;font-weight:650;letter-spacing:-.01em}
a{color:var(--brand);text-decoration:none}
button{font-family:inherit}

/* ---------- Layout ---------- */
#app-shell{display:grid;grid-template-columns:246px 1fr;height:100vh;overflow:hidden}

#sidebar{
  background:#0f172a;color:#cbd5e1;display:flex;flex-direction:column;
  overflow-y:auto;border-right:1px solid #1e293b;
}
.brand{display:flex;gap:10px;align-items:center;padding:16px 16px 14px;border-bottom:1px solid #1e293b}
.brand-mark{
  width:34px;height:34px;border-radius:9px;background:linear-gradient(135deg,#3b82f6,#1d4ed8);
  color:#fff;display:grid;place-items:center;font-weight:800;font-size:13px;letter-spacing:.5px;flex:none;
}
.brand-text{display:flex;flex-direction:column;line-height:1.25;min-width:0}
.brand-text strong{color:#fff;font-size:14px;letter-spacing:.4px}
.brand-text span{font-size:11px;color:#64748b}

#main-nav{padding:10px 8px;flex:1}
.nav-group{margin-bottom:14px}
.nav-group-title{font-size:10px;text-transform:uppercase;letter-spacing:.09em;color:#475569;padding:6px 10px 4px;font-weight:700}
.nav-item{
  display:flex;align-items:center;gap:9px;padding:7px 10px;border-radius:var(--radius-sm);
  color:#cbd5e1;cursor:pointer;font-size:13.5px;user-select:none;position:relative;
}
.nav-item:hover{background:#1e293b;color:#fff}
.nav-item.active{background:var(--brand);color:#fff;font-weight:600}
.nav-item .ico{width:17px;text-align:center;font-size:13px;opacity:.9;flex:none}
.nav-badge{
  margin-left:auto;background:var(--danger);color:#fff;border-radius:20px;
  font-size:10.5px;padding:1px 6px;font-weight:700;min-width:18px;text-align:center;
}
.nav-badge:empty{display:none}

.sidebar-foot{padding:12px;border-top:1px solid #1e293b}
.period-picker label{display:block;font-size:10px;text-transform:uppercase;letter-spacing:.08em;color:#64748b;margin-bottom:4px;font-weight:700}
.period-picker input{
  width:100%;background:#1e293b;border:1px solid #334155;color:#fff;
  padding:6px 8px;border-radius:var(--radius-sm);font-family:inherit;font-size:13px;
}
.version{font-size:10.5px;color:#475569;margin-top:10px;text-align:center}

#main{overflow-y:auto;display:flex;flex-direction:column}
#topbar{
  display:flex;justify-content:space-between;align-items:flex-start;gap:16px;
  padding:18px 26px 14px;background:var(--surface);border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:20;
}
#topbar h1{font-size:20px}
#page-sub{font-size:12.5px;margin:2px 0 0}
#topbar-actions{display:flex;gap:8px;flex-wrap:wrap;justify-content:flex-end}
#view{padding:20px 26px 60px;flex:1}

/* ---------- Primitives ---------- */
.muted{color:var(--text-2)}
.dim{color:var(--muted)}
.mono{font-family:var(--mono);font-variant-numeric:tabular-nums}
.num{font-variant-numeric:tabular-nums;text-align:right;white-space:nowrap}
.hidden{display:none !important}
.nowrap{white-space:nowrap}
.center{text-align:center}
.right{text-align:right}
.small{font-size:12px}
.xsmall{font-size:11px}
.strong{font-weight:650}
.pos{color:var(--ok)}
.neg{color:var(--danger)}
.row{display:flex;gap:10px;align-items:center;flex-wrap:wrap}
.row.tight{gap:6px}
.spacer{flex:1}
.stack{display:flex;flex-direction:column;gap:14px}

.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow)}
.card-head{
  display:flex;justify-content:space-between;align-items:center;gap:12px;
  padding:13px 16px;border-bottom:1px solid var(--border);
}
.card-head h3{font-size:14.5px}
.card-head .sub{font-size:11.5px;color:var(--muted);margin-top:1px}
.card-body{padding:16px}
.card-body.flush{padding:0}

.grid{display:grid;gap:14px}
.grid-2{grid-template-columns:repeat(2,minmax(0,1fr))}
.grid-3{grid-template-columns:repeat(3,minmax(0,1fr))}
.grid-4{grid-template-columns:repeat(4,minmax(0,1fr))}
@media (max-width:1250px){.grid-4{grid-template-columns:repeat(2,minmax(0,1fr))}.grid-3{grid-template-columns:repeat(2,minmax(0,1fr))}}
@media (max-width:900px){.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}

/* ---------- Buttons ---------- */
.btn{
  display:inline-flex;align-items:center;gap:6px;padding:7px 13px;border-radius:var(--radius-sm);
  border:1px solid var(--border-strong);background:var(--surface);color:var(--text);
  font-size:13px;font-weight:550;cursor:pointer;white-space:nowrap;transition:.12s;
}
.btn:hover{background:var(--surface-2);border-color:var(--muted)}
.btn.primary{background:var(--brand);border-color:var(--brand);color:#fff}
.btn.primary:hover{background:#1e40af;border-color:#1e40af}
.btn.danger{background:var(--danger);border-color:var(--danger);color:#fff}
.btn.danger:hover{background:#b91c1c}
.btn.ghost{border-color:transparent;background:transparent;color:var(--text-2)}
.btn.ghost:hover{background:var(--surface-2);color:var(--text)}
.btn.sm{padding:4px 9px;font-size:12px}
.btn:disabled{opacity:.45;cursor:not-allowed}
.icon-btn{
  border:none;background:transparent;cursor:pointer;color:var(--text-2);
  width:28px;height:28px;border-radius:6px;font-size:15px;line-height:1;
}
.icon-btn:hover{background:var(--surface-2);color:var(--text)}

/* ---------- Forms ---------- */
.field{display:flex;flex-direction:column;gap:4px;margin-bottom:12px}
.field > label{font-size:12px;font-weight:600;color:var(--text-2)}
.field > label .req{color:var(--danger);margin-left:2px}
.field .hint{font-size:11px;color:var(--muted)}
input[type=text],input[type=number],input[type=email],input[type=date],input[type=month],select,textarea{
  width:100%;padding:7px 10px;border:1px solid var(--border-strong);border-radius:var(--radius-sm);
  font-family:inherit;font-size:13.5px;background:#fff;color:var(--text);
}
input:focus,select:focus,textarea:focus{outline:2px solid var(--brand-soft);border-color:var(--brand-2)}
input[readonly]{background:var(--surface-2);color:var(--text-2)}
input.err,select.err{border-color:var(--danger);background:var(--danger-soft)}
textarea{resize:vertical;min-height:60px}
.field-err{font-size:11.5px;color:var(--danger);font-weight:600}
.checkline{display:flex;align-items:center;gap:7px;font-size:13px}
.checkline input{width:auto}
fieldset{border:1px solid var(--border);border-radius:var(--radius);padding:12px 14px 2px;margin:0 0 14px}
legend{font-size:11.5px;font-weight:700;color:var(--brand);text-transform:uppercase;letter-spacing:.05em;padding:0 6px}

.toolbar{display:flex;gap:8px;align-items:center;flex-wrap:wrap;margin-bottom:14px}
.toolbar input[type=text],.toolbar select{width:auto;min-width:170px}
.search-box{position:relative;flex:1;max-width:320px}
.search-box input{padding-left:30px}
.search-box::before{content:"🔍";position:absolute;left:9px;top:7px;font-size:12px;opacity:.5}

/* ---------- Tables ---------- */
.table-wrap{overflow-x:auto}
table.data{width:100%;border-collapse:collapse;font-size:13px}
table.data th{
  text-align:left;padding:9px 12px;background:var(--surface-2);border-bottom:1px solid var(--border);
  font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--text-2);font-weight:700;white-space:nowrap;
}
table.data th.num,table.data td.num{text-align:right}
table.data td{padding:9px 12px;border-bottom:1px solid var(--border);vertical-align:middle}
table.data tbody tr:hover{background:var(--brand-soft)}
table.data tbody tr.clickable{cursor:pointer}
table.data tfoot td{padding:10px 12px;background:var(--surface-2);font-weight:700;border-top:2px solid var(--border-strong)}
table.data .act{white-space:nowrap;text-align:right}
.empty-state{padding:40px 20px;text-align:center;color:var(--muted)}
.empty-state .big{font-size:30px;display:block;margin-bottom:8px;opacity:.5}

/* ---------- Badges / pills ---------- */
.badge{display:inline-block;padding:2px 8px;border-radius:20px;font-size:11px;font-weight:650;white-space:nowrap}
.badge.ok{background:var(--ok-soft);color:var(--ok)}
.badge.warn{background:var(--warn-soft);color:var(--warn)}
.badge.danger{background:var(--danger-soft);color:var(--danger)}
.badge.info{background:var(--info-soft);color:var(--info)}
.badge.neutral{background:var(--surface-2);color:var(--text-2);border:1px solid var(--border)}
.badge.brand{background:var(--brand-soft);color:var(--brand)}

/* ---------- KPI ---------- */
.kpi{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:14px 16px;box-shadow:var(--shadow);position:relative;overflow:hidden}
.kpi::after{content:"";position:absolute;left:0;top:0;bottom:0;width:3px;background:var(--brand)}
.kpi.k-ok::after{background:var(--ok)}
.kpi.k-warn::after{background:var(--warn)}
.kpi.k-danger::after{background:var(--danger)}
.kpi .k-label{font-size:11px;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);font-weight:700}
.kpi .k-value{font-size:22px;font-weight:700;margin-top:5px;font-variant-numeric:tabular-nums;letter-spacing:-.02em}
.kpi .k-sub{font-size:11.5px;color:var(--text-2);margin-top:3px}

/* ---------- Alerts ---------- */
.alert{display:flex;gap:10px;padding:11px 14px;border-radius:var(--radius-sm);border:1px solid;font-size:13px;align-items:flex-start}
.alert .a-ico{font-size:15px;line-height:1.2;flex:none}
.alert.danger{background:var(--danger-soft);border-color:#fecaca;color:#7f1d1d}
.alert.warn{background:var(--warn-soft);border-color:#fde68a;color:#78350f}
.alert.info{background:var(--info-soft);border-color:#bae6fd;color:#0c4a6e}
.alert.ok{background:var(--ok-soft);border-color:#a7f3d0;color:#065f46}
.alert-row{
  display:grid;grid-template-columns:26px 1fr auto;gap:10px;align-items:flex-start;
  padding:11px 14px;border-bottom:1px solid var(--border);
}
.alert-row:hover{background:var(--surface-2)}
.alert-row .a-title{font-weight:600}
.alert-row .a-desc{font-size:12.5px;color:var(--text-2);margin-top:2px}
.alert-row .a-ref{font-size:11.5px;color:var(--muted);margin-top:3px;font-family:var(--mono)}

/* ---------- Modal ---------- */
.modal-root{position:fixed;inset:0;z-index:200;display:grid;place-items:center;padding:24px}
.modal-backdrop{position:absolute;inset:0;background:rgba(15,23,42,.55);backdrop-filter:blur(2px)}
.modal-panel{
  position:relative;background:var(--surface);border-radius:12px;box-shadow:var(--shadow-lg);
  width:min(880px,100%);max-height:88vh;display:flex;flex-direction:column;
}
.modal-panel.wide{width:min(1120px,100%)}
.modal-panel.narrow{width:min(520px,100%)}
.modal-head{display:flex;justify-content:space-between;align-items:center;padding:15px 20px;border-bottom:1px solid var(--border)}
.modal-head h2{font-size:16px}
.modal-body{padding:20px;overflow-y:auto}
.modal-foot{display:flex;justify-content:flex-end;gap:8px;padding:13px 20px;border-top:1px solid var(--border);background:var(--surface-2);border-radius:0 0 12px 12px}

/* ---------- Toast ---------- */
#toast-root{position:fixed;right:20px;bottom:20px;z-index:300;display:flex;flex-direction:column;gap:8px}
.toast{
  background:#0f172a;color:#fff;padding:11px 16px;border-radius:var(--radius-sm);
  box-shadow:var(--shadow-lg);font-size:13px;max-width:380px;animation:slideIn .18s ease-out;
}
.toast.ok{background:#065f46}
.toast.err{background:#991b1b}
.toast.warn{background:#92400e}
@keyframes slideIn{from{transform:translateX(20px);opacity:0}to{transform:none;opacity:1}}

/* ---------- Tabs ---------- */
.tabs{display:flex;gap:2px;border-bottom:1px solid var(--border);margin-bottom:16px;overflow-x:auto}
.tab{
  padding:8px 14px;font-size:13px;font-weight:550;color:var(--text-2);cursor:pointer;
  border-bottom:2px solid transparent;white-space:nowrap;
}
.tab:hover{color:var(--text)}
.tab.active{color:var(--brand);border-bottom-color:var(--brand);font-weight:650}

/* ---------- Payslip ---------- */
.slip{background:#fff;padding:26px 30px;font-size:13px}
.slip-head{display:flex;justify-content:space-between;border-bottom:2px solid var(--text);padding-bottom:12px;margin-bottom:16px}
.slip-head .co{font-size:16px;font-weight:800;letter-spacing:.5px}
.slip h4{font-size:12px;text-transform:uppercase;letter-spacing:.07em;color:var(--brand);margin:16px 0 7px;border-bottom:1px solid var(--border);padding-bottom:4px}
table.slip-t{width:100%;border-collapse:collapse;font-size:13px}
table.slip-t td{padding:4px 0;border-bottom:1px dotted var(--border)}
table.slip-t td:last-child{text-align:right;font-variant-numeric:tabular-nums;white-space:nowrap}
table.slip-t tr.total td{font-weight:750;border-top:1.5px solid var(--text);border-bottom:none;padding-top:7px;font-size:14px}
table.slip-t tr.sub td{color:var(--text-2);padding-left:14px;font-size:12.5px}
.slip-net{background:var(--brand-soft);border:1.5px solid var(--brand);border-radius:var(--radius-sm);padding:12px 16px;margin-top:16px;display:flex;justify-content:space-between;align-items:center}
.slip-net .lbl{font-weight:700;text-transform:uppercase;font-size:12px;letter-spacing:.06em}
.slip-net .val{font-size:21px;font-weight:800;color:var(--brand);font-variant-numeric:tabular-nums}

/* ---------- Misc blocks ---------- */
.kv{display:grid;grid-template-columns:auto 1fr;gap:5px 14px;font-size:13px}
.kv dt{color:var(--text-2)}
.kv dd{margin:0;font-weight:550;text-align:right;font-variant-numeric:tabular-nums}

.bar-track{height:8px;background:var(--border);border-radius:20px;overflow:hidden}
.bar-fill{height:100%;border-radius:20px;background:var(--brand);transition:width .3s}
.bar-fill.ok{background:var(--ok)}
.bar-fill.warn{background:var(--warn)}
.bar-fill.danger{background:var(--danger)}

.legend{display:flex;flex-wrap:wrap;gap:12px;font-size:12px;margin-top:10px}
.legend i{width:10px;height:10px;border-radius:3px;display:inline-block;margin-right:5px;vertical-align:-1px}

.callout{border-left:3px solid var(--brand);background:var(--brand-soft);padding:10px 14px;border-radius:0 var(--radius-sm) var(--radius-sm) 0;font-size:12.5px}
.callout.warn{border-color:var(--warn);background:var(--warn-soft)}

.split-input{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.formula{font-family:var(--mono);font-size:11.5px;color:var(--text-2);background:var(--surface-2);padding:6px 9px;border-radius:5px;border:1px solid var(--border)}

/* ---------- Print ---------- */
@media print{
  #sidebar,#topbar,#topbar-actions,.modal-foot,.modal-head,.no-print,#toast-root{display:none !important}
  #app-shell{display:block;height:auto;overflow:visible}
  #main{overflow:visible}
  #view{padding:0}
  .modal-root{position:static;padding:0;display:block}
  .modal-backdrop{display:none}
  .modal-panel{box-shadow:none;max-height:none;width:100%}
  .modal-body{overflow:visible;padding:0}
  body{background:#fff}
  .card{box-shadow:none;border:1px solid #999}
}