:root{
  --ink:#16201e; --muted:#5d6b68; --paper:#f3f5f4; --panel:#fff; --line:#dce2e0;
  --teal:#0d4a45; --teal-2:#135f58; --teal-soft:#e3efed;
  --tag:#f5b700; --tag-ink:#3d2e00;
  --red:#b42318; --green:#1e7a46; --blue:#1f5fa8;
  --r:8px; --font:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font:15px/1.5 var(--font);color:var(--ink);background:var(--paper);font-variant-numeric:tabular-nums}
a{color:var(--teal-2);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:3px solid var(--tag);outline-offset:2px}
small,.muted{color:var(--muted)}
.sr{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}
h1,h2{margin:0;font-weight:700;letter-spacing:-.01em}
h2{font-size:17px}
h2 small{font-weight:500;margin-left:6px}

/* khung */
.side{position:fixed;inset:0 auto 0 0;width:232px;background:var(--teal);color:#d7e7e4;display:flex;flex-direction:column;z-index:20;padding-bottom:env(safe-area-inset-bottom)}
.brand{display:flex;gap:10px;align-items:center;padding:18px 18px 14px;font-weight:700;color:#fff}
.brand-mark{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:50%;background:var(--tag);color:var(--tag-ink);font-weight:700;font-size:13px}
.brand-mark.big{width:56px;height:56px;font-size:20px}
.side nav{flex:1;overflow-y:auto;padding:4px 10px}
.side nav a{display:flex;gap:12px;align-items:center;padding:9px 10px;border-radius:6px;color:#d7e7e4;font-weight:500}
.side nav a svg{width:19px;height:19px;fill:currentColor;opacity:.8;flex:none}
.side nav a:hover{background:var(--teal-2);text-decoration:none}
.side nav a.on{background:#fff;color:var(--teal)}
.me{padding:14px 18px;font-size:13px;border-top:1px solid rgba(255,255,255,.12)}
.me a{color:#fff}
.main{margin-left:232px;min-height:100vh}
.top{position:sticky;top:0;z-index:10;display:flex;gap:14px;align-items:center;padding:12px 24px;padding-top:calc(12px + env(safe-area-inset-top));background:rgba(243,245,244,.94);backdrop-filter:blur(6px);border-bottom:1px solid var(--line)}
.top h1{font-size:20px;flex:1;min-width:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.quick input{width:230px}
.menu-btn{display:none;border:0;background:none;font-size:22px;padding:4px 8px;cursor:pointer;color:var(--ink)}
.content{padding:20px 24px 60px;max-width:1360px}
.scrim{display:none}

/* form */
input,select,button{font:inherit;color:inherit}
input[type=search],input[type=date],input:not([type]),input[type=password],select{border:1px solid var(--line);background:#fff;border-radius:6px;padding:7px 10px;min-height:38px}
button{background:var(--teal);color:#fff;border:0;border-radius:6px;padding:8px 16px;font-weight:600;cursor:pointer;min-height:38px}
button:hover{background:var(--teal-2)}
.filters{display:flex;flex-wrap:wrap;gap:10px 14px;align-items:center;margin-bottom:14px}
.filters label{display:flex;gap:6px;align-items:center;font-size:14px;color:var(--muted)}
.f-search{flex:1 1 260px}
.f-search input{flex:1;width:100%}
.chk input{width:17px;height:17px;accent-color:var(--teal)}

/* số liệu */
.kpis{display:grid;grid-template-columns:1.4fr repeat(3,1fr);gap:12px;margin-bottom:18px}
.kpis.small{grid-template-columns:repeat(4,1fr)}
.kpi{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:14px 16px;display:flex;flex-direction:column;gap:2px;min-width:0}
.kpi span{font-size:13px;color:var(--muted)}
.kpi strong{font-size:22px;font-weight:700;letter-spacing:-.02em}
.kpi em{font-style:normal;font-size:13px;color:var(--muted)}
.kpi.lead{background:var(--teal);border-color:var(--teal);color:#fff}
.kpi.lead span,.kpi.lead em{color:#bfd6d2}
.kpi.lead strong{font-size:30px}
.up{color:var(--green)}.down,.neg{color:var(--red)}.pos{color:var(--green)}
.sum{margin:0 0 12px;color:var(--muted)}
.sum b{color:var(--ink)}
.pill{display:inline-block;background:var(--teal-soft);color:var(--teal);border-radius:20px;padding:1px 10px;font-size:13px;margin:2px 0 2px 6px}

.panel{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;margin-bottom:18px}
.panel>h2{margin-bottom:12px}
details.panel summary{cursor:pointer;font-weight:600}
details.panel[open] summary{margin-bottom:10px}
.two{display:grid;grid-template-columns:1fr 1fr;gap:18px}
.two .panel{margin-bottom:0}
.empty{color:var(--muted);padding:12px 0}
.alert{background:#fdecea;color:var(--red);border-radius:6px;padding:10px 14px;margin-bottom:14px}

/* biểu đồ */
.bars{display:grid;grid-template-columns:repeat(12,1fr);gap:8px;height:230px;align-items:end}
.bar{display:flex;flex-direction:column;align-items:center;height:100%;justify-content:flex-end;gap:4px;min-width:0}
.bar b{font-size:11px;font-weight:600;color:var(--muted);white-space:nowrap}
.bar span{font-size:12px;color:var(--muted)}
.stack{width:100%;max-width:46px;display:flex;flex-direction:column;border-radius:4px 4px 0 0;overflow:hidden;min-height:2px}
.s-sale{background:var(--teal)}.s-repair{background:var(--tag)}
.legend{font-size:13px;color:var(--muted);margin:10px 0 0;display:flex;gap:8px;align-items:center}
.legend i{display:inline-block;width:12px;height:12px;border-radius:2px;margin-left:10px}
.legend i:first-child{margin-left:0}

/* phiếu sửa: nhãn treo máy */
.tickets{display:grid;grid-template-columns:repeat(auto-fill,minmax(250px,1fr));gap:12px}
.ticket{position:relative;display:flex;flex-direction:column;gap:4px;background:#fffbea;border:1px solid #efd98a;border-radius:4px 14px 14px 4px;padding:12px 14px 12px 28px;color:var(--ink)}
.ticket::before{content:"";position:absolute;left:9px;top:16px;width:9px;height:9px;border-radius:50%;background:var(--paper);box-shadow:inset 0 0 0 2px #d9bd55}
.ticket:hover{text-decoration:none;border-color:var(--tag)}
.ticket p{margin:0;font-size:14px}
.t-head,.t-foot{display:flex;justify-content:space-between;gap:8px;align-items:center;font-size:13px;color:var(--muted)}
.t-foot b{color:var(--ink);font-size:15px}
.t-meta{font-size:12px;color:var(--muted)}

.tag{display:inline-block;font-size:12px;font-weight:600;border-radius:4px;padding:1px 8px;white-space:nowrap}
.tag-open{background:var(--tag);color:var(--tag-ink)}
.tag-ready{background:#d6ecff;color:var(--blue)}
.tag-debt{background:#fde2dd;color:var(--red)}
.tag-done{background:#e2f1e7;color:var(--green)}
.tag-draft{background:#eceeed;color:var(--muted)}

/* bảng */
.table-wrap{overflow-x:auto;background:var(--panel);border:1px solid var(--line);border-radius:var(--r)}
.grid{width:100%;border-collapse:collapse;font-size:14px}
.grid th{position:sticky;top:0;background:#f8faf9;text-align:left;font-weight:600;color:var(--muted);font-size:13px;padding:9px 12px;border-bottom:1px solid var(--line);white-space:nowrap}
.grid td{padding:9px 12px;border-bottom:1px solid #edf1ef;vertical-align:top}
.grid tbody tr:hover{background:#f7faf9}
.grid tr:last-child td{border-bottom:0}
.r{text-align:right;white-space:nowrap}
.pager{display:flex;gap:14px;align-items:center;justify-content:center;margin:14px 0;font-size:14px}
.pager a,.pager .off{padding:6px 12px;border-radius:6px;border:1px solid var(--line);background:#fff}
.pager .off{color:#b3bdba}
.pager-info{color:var(--muted)}

/* chứng từ */
.doc{background:var(--panel);border:1px solid var(--line);border-radius:var(--r);padding:18px;margin-bottom:18px}
.doc .table-wrap{border-radius:6px}
.doc-head{display:grid;grid-template-columns:minmax(200px,1fr) 2fr;gap:18px;margin-bottom:14px}
.doc-head h2{font-size:22px;margin-bottom:4px}
dl{display:grid;grid-template-columns:max-content 1fr;gap:4px 14px;margin:0}
dt{color:var(--muted);font-size:14px}
dd{margin:0}
.totals{margin:14px 0 0 auto;max-width:340px}
.totals dd{text-align:right;font-weight:600}
.line-card{border-top:1px dashed var(--line);padding:14px 0 4px}
.line-card header{display:flex;flex-wrap:wrap;gap:8px;align-items:center;margin-bottom:8px}
.chips{list-style:none;display:flex;flex-wrap:wrap;gap:8px;margin:10px 0 0;padding:0}
.chips li{background:var(--paper);border:1px solid var(--line);border-radius:6px;padding:4px 10px;font-size:14px}
.timeline{list-style:none;margin:0;padding:0;font-size:14px}
.timeline li{padding:7px 0;border-bottom:1px solid #edf1ef}
.timeline li:last-child{border:0}
.timeline time{display:inline-block;min-width:84px;color:var(--muted)}
.tabs{display:flex;gap:6px;margin-bottom:14px}
.tabs a{padding:8px 14px;border-radius:6px;background:#fff;border:1px solid var(--line);color:var(--ink);font-weight:500}
.tabs a.on{background:var(--teal);border-color:var(--teal);color:#fff}

/* tra IMEI */
.history{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}
.history li{display:grid;grid-template-columns:64px 1fr auto;gap:14px;align-items:start;background:#fff;border:1px solid var(--line);border-left:4px solid var(--line);border-radius:6px;padding:12px 14px}
.h-in{border-left-color:var(--blue)!important}.h-out{border-left-color:var(--teal)!important}.h-fix{border-left-color:var(--tag)!important}
.h-kind{font-weight:700;font-size:13px}

/* đăng nhập */
.login-page{display:grid;place-items:center;min-height:100vh;padding:20px;background:var(--teal)}
.login{background:#fff;border-radius:12px;padding:30px 28px;width:100%;max-width:360px;display:flex;flex-direction:column;gap:14px}
.login h1{font-size:22px}
.login p{margin:-8px 0 0;color:var(--muted);font-size:14px}
.login label{display:flex;flex-direction:column;gap:4px;font-size:14px;font-weight:500}

/* di động */
@media (max-width:1000px){
  .kpis{grid-template-columns:1fr 1fr}
  .kpis .lead{grid-column:1/-1}
  .two,.doc-head{grid-template-columns:1fr}
}
@media (max-width:760px){
  .side{transform:translateX(-100%);transition:transform .2s}
  .nav-open .side{transform:none}
  .nav-open .scrim{display:block;position:fixed;inset:0;background:rgba(0,0,0,.35);z-index:15}
  .main{margin-left:0}
  .menu-btn{display:block}
  .top{padding:10px 12px;padding-top:calc(10px + env(safe-area-inset-top))}
  .top h1{font-size:17px}
  .quick{display:none}
  .content{padding:14px 12px 60px}
  .kpis.small{grid-template-columns:1fr 1fr}
  .kpi strong{font-size:19px}.kpi.lead strong{font-size:26px}
  .bars{gap:3px;height:180px}.bar b{display:none}.bar span{font-size:10px}
  .filters label:not(.f-search){flex:1 1 45%}
  .filters select,.filters input[type=date]{flex:1;min-width:0}
  .filters button{flex:1 1 100%}
  /* bảng thành thẻ */
  .table-wrap{background:none;border:0;overflow:visible}
  .grid thead{display:none}
  .grid,.grid tbody,.grid tr,.grid td{display:block;width:100%}
  .grid tr{background:#fff;border:1px solid var(--line);border-radius:var(--r);margin-bottom:10px;padding:6px 12px}
  .grid td{display:flex;justify-content:space-between;gap:12px;padding:5px 0;border-bottom:1px solid #f0f3f2;text-align:right}
  .grid td::before{content:attr(data-l);color:var(--muted);font-size:13px;text-align:left;flex:none}
  .grid td.empty{display:block;text-align:center}.grid td.empty::before{content:none}
  .grid td:last-child{border:0}
  .history li{grid-template-columns:1fr auto}.h-kind{grid-column:1/-1}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}