:root{
  --ink:#17313b; --ink-2:#23444f; --paper:#eef3f1; --card:#fff; --line:#d5dfdc; --muted:#5d737b;
  --pos:#1f8a5b; --neg:#c0442f; --brand:#e8a317; --warn:#8a5f00; --r:10px;
  font-family:"Be Vietnam Pro",system-ui,-apple-system,"Segoe UI",Roboto,Arial,sans-serif;
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--paper);color:var(--ink);font-size:15px;line-height:1.5}
a{color:#1b6b8a}
h1{font-size:1.6rem;font-weight:800;margin:.2rem 0 1rem;letter-spacing:-.01em}
h2{font-size:1.05rem;font-weight:700;margin:0 0 .75rem}
h2 small{font-weight:500;color:var(--muted);font-size:.85rem}
small{display:block;color:var(--muted);font-size:.78rem;font-weight:400}
.n,.hero-num,.stats b,.pl td.n{font-variant-numeric:tabular-nums;white-space:nowrap}
.pos{color:var(--pos)} .neg{color:var(--neg)}
:focus-visible{outline:3px solid var(--brand);outline-offset:2px}

/* Khung */
.side{position:fixed;inset:0 auto 0 0;width:228px;background:var(--ink);color:#fff;display:flex;flex-direction:column;padding:18px 12px;z-index:30;overflow-y:auto}
.brand{display:block;color:var(--brand);font-weight:800;font-size:1.15rem;text-decoration:none;padding:4px 10px 18px;letter-spacing:.01em}
.side nav a{display:block;color:#d6e3e6;text-decoration:none;padding:9px 10px;border-radius:8px;font-weight:500}
.side nav a:hover{background:var(--ink-2);color:#fff}
.side nav a.on{background:var(--brand);color:var(--ink);font-weight:700}
.who{margin-top:auto;padding:14px 10px 0;border-top:1px solid var(--ink-2);font-weight:600}
.who a{display:block;color:#9fb8bf;font-weight:400;font-size:.85rem}
.main{margin-left:228px;padding:24px 28px 60px;max-width:1180px}
.top,.bottom,.scrim{display:none}

/* Hero tổng tiền */
.hero{background:var(--ink);color:#fff;border-radius:14px;padding:22px 24px 20px;margin-bottom:16px;border-bottom:5px solid var(--brand)}
.hero-label{color:#a9c1c7;font-size:.9rem}
.hero-num{font-size:clamp(2rem,6vw,3.2rem);font-weight:800;line-height:1.15;letter-spacing:-.02em;margin:.15rem 0 .6rem}
.hero .hero-num.pos{color:#fff} .hero .hero-num.neg{color:#ff9d8a}
.hero-split{display:flex;flex-wrap:wrap;gap:6px 22px;color:#a9c1c7;font-size:.88rem}
.hero-split b{color:#fff;font-weight:600;margin-left:4px}
.hero.small .hero-num{font-size:clamp(1.7rem,5vw,2.4rem)}

/* Khối */
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px 18px;margin:0 0 16px}
details.panel>summary{cursor:pointer;font-weight:700;font-size:1.05rem;list-style:none;display:flex;align-items:center;gap:8px}
details.panel>summary::before{content:"+";display:inline-grid;place-items:center;width:24px;height:24px;border-radius:6px;background:var(--brand);color:var(--ink);font-weight:800}
details.panel[open]>summary::before{content:"–"}
details.panel[open]>summary{margin-bottom:12px}
.cols{display:grid;grid-template-columns:repeat(auto-fit,minmax(320px,1fr));gap:16px;align-items:start}
.cols>section:not(.panel){min-width:0}
.hint{color:var(--muted);font-size:.87rem;margin:.2rem 0 .8rem}
.empty{background:var(--card);border:1px dashed var(--line);border-radius:var(--r);padding:18px;color:var(--muted);text-align:center}

/* Form */
.form label,.filters label{display:flex;flex-direction:column;gap:4px;font-size:.84rem;font-weight:600;color:var(--muted)}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(170px,1fr));gap:10px 12px;margin-bottom:10px}
.grid .w2{grid-column:span 2}
input,select{font:inherit;color:var(--ink);background:#fff;border:1px solid #c3d0cd;border-radius:8px;padding:9px 10px;min-height:42px;width:100%}
input:focus,select:focus{border-color:var(--ink);outline:none;box-shadow:0 0 0 3px rgba(232,163,23,.35)}
input.money{text-align:right;font-variant-numeric:tabular-nums;font-weight:600}
fieldset{border:1px solid var(--line);border-radius:8px;padding:10px 12px 2px;margin:0 0 12px}
legend{font-weight:700;padding:0 6px;font-size:.9rem}
.form>label{margin-bottom:12px}
.with-btn{display:flex;gap:6px}
.with-btn input{flex:1;min-width:0}
.stack{display:flex;flex-direction:column;gap:12px}
.stack label{display:flex;flex-direction:column;gap:4px;font-weight:600;font-size:.88rem}
.btn{display:inline-flex;align-items:center;justify-content:center;font:inherit;font-weight:700;border:1px solid var(--ink);background:#fff;color:var(--ink);border-radius:8px;padding:9px 16px;min-height:42px;cursor:pointer;text-decoration:none;white-space:nowrap}
.btn:hover{background:#f3f7f6}
.btn.primary{background:var(--ink);color:#fff}
.btn.primary:hover{background:var(--ink-2)}
.btn.sm{min-height:36px;padding:5px 10px;font-size:.84rem}
.link,.link-del{background:none;border:0;padding:4px 2px;font:inherit;font-size:.85rem;cursor:pointer;color:#1b6b8a}
.link-del{color:var(--neg)}
.acts{white-space:nowrap}
.acts>*{display:inline-block;margin-right:8px}
.sumline{background:#fbf3df;border-radius:8px;padding:10px 12px;margin:0 0 12px;display:flex;flex-wrap:wrap;gap:4px 10px;align-items:baseline;font-size:.9rem}
.sumline b{font-variant-numeric:tabular-nums;margin-right:10px}
.chips{display:flex;flex-wrap:wrap;gap:6px;margin:0 0 12px}
.chip{font:inherit;font-size:.84rem;border:1px solid var(--line);background:#f6f9f8;border-radius:999px;padding:6px 12px;cursor:pointer;color:var(--ink)}
.chip:hover{border-color:var(--ink)}
.chip-del{display:inline-flex;align-items:center;gap:4px;border:1px solid var(--line);border-radius:999px;padding:3px 4px 3px 12px;font-size:.84rem}
.chip-del span small{display:inline;margin-left:2px}
.chip-del button{border:0;background:none;color:var(--neg);font-size:1.1rem;cursor:pointer;padding:0 6px}
.filters{display:flex;flex-wrap:wrap;gap:10px;align-items:flex-end;margin-bottom:12px}
.filters label{min-width:180px}
.quick{display:flex;flex-wrap:wrap;gap:8px;margin:0 0 16px}

/* Kỳ */
.period{display:flex;flex-wrap:wrap;gap:10px 16px;align-items:center;margin:4px 0 14px}
.tabs{display:inline-flex;background:#dde7e4;border-radius:9px;padding:3px;flex-wrap:wrap}
.tabs a{padding:6px 12px;border-radius:7px;text-decoration:none;color:var(--ink);font-weight:600;font-size:.88rem}
.tabs a.on{background:var(--ink);color:#fff}
.pnav{display:flex;align-items:center;gap:8px}
.pnav>a{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:8px;border:1px solid var(--line);background:#fff;text-decoration:none;color:var(--ink);font-size:1.2rem}
.pnav a.now{width:auto;padding:0 10px;font-size:.84rem}
.pnav.custom input{width:auto;min-height:36px;padding:5px 8px}

/* Số liệu */
.stats{display:grid;grid-template-columns:repeat(auto-fit,minmax(160px,1fr));gap:10px;margin-bottom:16px}
.stats>div{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:10px 14px}
.stats>div.hl{border-color:var(--ink);box-shadow:inset 4px 0 0 var(--brand)}
.stats span{display:block;color:var(--muted);font-size:.8rem}
.stats b{font-size:1.2rem;font-weight:800}
.flash{padding:10px 14px;border-radius:8px;margin-bottom:12px;background:#e2f3ea;color:#145c3c;font-weight:500}
.flash.err{background:#fbe5e1;color:#8f2e1e}

/* Bảng */
.tbl-wrap{overflow-x:auto;background:var(--card);border:1px solid var(--line);border-radius:var(--r);margin-bottom:16px}
.panel .tbl-wrap{border:0;margin:0 -4px}
.tbl{width:100%;border-collapse:collapse;font-size:.9rem}
.tbl th{text-align:left;font-weight:600;color:var(--muted);font-size:.8rem;padding:9px 10px;border-bottom:1px solid var(--line);white-space:nowrap;background:#f7faf9}
.tbl td{padding:9px 10px;border-bottom:1px solid #e8eeec;vertical-align:top}
.tbl tbody tr:last-child td{border-bottom:0}
.tbl th.n,.tbl td.n{text-align:right}
.tbl tfoot td{font-weight:700;border-top:2px solid var(--ink);background:#f7faf9}
.tbl td.warn{color:var(--warn);font-weight:600}
.tbl td.big{font-weight:800;font-size:1rem}
.tbl tr.off td{opacity:.5}
.tbl form{margin:0}
.tbl select{min-height:34px;padding:4px 6px;width:auto;font-size:.85rem}
.mini{display:inline-block;margin-top:3px;font-size:.78rem;font-weight:700;background:var(--brand);color:var(--ink);text-decoration:none;border-radius:5px;padding:1px 7px}
.pl{width:100%;border-collapse:collapse}
.pl td{padding:7px 0;border-bottom:1px solid #e8eeec}
.pl td.n{text-align:right;font-weight:600}
.pl tr.sub td{font-weight:600}
.pl tr.total td{border-top:2px solid var(--ink);border-bottom:0;font-weight:800;font-size:1.1rem;padding-top:10px}
.bars{display:flex;flex-direction:column;gap:8px;margin-bottom:16px}
.bar{display:grid;grid-template-columns:minmax(90px,150px) 1fr auto;gap:10px;align-items:center;font-size:.88rem}
.bar i{display:block;height:10px;border-radius:5px;background:linear-gradient(to right,var(--neg) var(--w),#e3ebe8 var(--w))}
.bar b{font-variant-numeric:tabular-nums}
.chart{height:260px;margin-bottom:14px}
.acc-list{display:grid;grid-template-columns:repeat(auto-fill,minmax(220px,1fr));gap:8px}
.acc{display:flex;justify-content:space-between;align-items:center;gap:10px;padding:10px 12px;border:1px solid var(--line);border-radius:8px;text-decoration:none;color:var(--ink)}
.acc:hover{border-color:var(--ink)}
.acc b{font-size:1.05rem;font-variant-numeric:tabular-nums}

/* Đăng nhập */
body.auth{display:grid;place-items:center;min-height:100vh;padding:20px;background:var(--ink)}
.auth-box{background:#fff;border-radius:14px;padding:26px;width:100%;max-width:380px;border-bottom:5px solid var(--brand)}
.auth-box .brand{padding:0;color:var(--ink);font-size:1.4rem}
.muted{color:var(--muted);font-size:.9rem}

/* Điện thoại */
@media (max-width:860px){
  .side{transform:translateX(-100%);transition:transform .2s ease}
  body.menu-open .side{transform:none}
  body.menu-open .scrim{display:block;position:fixed;inset:0;background:rgba(10,25,30,.45);z-index:25}
  .top{display:flex;align-items:center;gap:10px;position:sticky;top:0;z-index:20;background:var(--ink);color:var(--brand);font-weight:800;padding:calc(8px + env(safe-area-inset-top,0px)) 12px 8px}
  .top button{background:none;border:0;color:#fff;font-size:1.4rem;width:40px;height:40px;cursor:pointer}
  .main{margin:0;padding:14px 12px calc(84px + env(safe-area-inset-bottom,0px))}
  h1{font-size:1.35rem}
  .bottom{display:flex;position:fixed;left:0;right:0;bottom:0;z-index:20;background:#fff;border-top:1px solid var(--line);padding-bottom:env(safe-area-inset-bottom,0px)}
  .bottom a{flex:1;text-align:center;padding:12px 2px;font-size:.78rem;font-weight:600;color:var(--muted);text-decoration:none;border-top:3px solid transparent}
  .bottom a.on{color:var(--ink);border-top-color:var(--brand)}
  .grid{grid-template-columns:1fr 1fr}
  .grid .w2{grid-column:1/-1}
  .panel{padding:14px 12px}
  .stats{grid-template-columns:1fr 1fr}
  .stats b{font-size:1.05rem}
  .tbl{font-size:.85rem}
}
@media (max-width:420px){ .grid{grid-template-columns:1fr} .grid .w2{grid-column:auto} }
@media (prefers-reduced-motion:reduce){ .side{transition:none} }