/* ==========================================================
   হিসাব — খাতার মতো শান্ত, পরিষ্কার ইন্টারফেস
   ========================================================== */
@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+Bengali:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

:root{
  --ink:#132135;
  --ink-2:#22354f;
  --ink-soft:#5b6b82;
  --paper:#eef1f5;
  --surface:#ffffff;
  --line:#dde3ea;
  --line-soft:#eceff3;
  --brass:#9a6b16;
  --brass-soft:#f6efe0;
  --pos:#1c6b52;
  --neg:#a8352a;
  --radius:10px;
  --shadow:0 1px 2px rgba(19,33,53,.06), 0 4px 16px rgba(19,33,53,.05);
}

*{box-sizing:border-box}
html,body{margin:0;padding:0}
body{
  font-family:'Noto Sans Bengali',system-ui,-apple-system,sans-serif;
  background:var(--paper); color:var(--ink);
  font-size:15px; line-height:1.65;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--ink-2);text-decoration:none}
a:hover{text-decoration:underline}
h1,h2,h3{line-height:1.35;margin:0 0 .5rem}
h1{font-size:1.5rem;font-weight:700;letter-spacing:-.01em}
h2{font-size:1.15rem;font-weight:600}
h3{font-size:1rem;font-weight:600}
.muted{color:var(--ink-soft);font-size:.92em}
.hint{color:var(--ink-soft);font-weight:400;font-size:.8em}

/* সংখ্যা সবসময় সারিবদ্ধ থাকবে */
.n,td.n,th.n,.figure{
  font-family:'IBM Plex Mono','Noto Sans Bengali',monospace;
  font-variant-numeric:tabular-nums; text-align:right; white-space:nowrap;
}
.pos{color:var(--pos)} .neg{color:var(--neg)}

/* ---------- বিন্যাস ---------- */
.shell{display:flex;min-height:100vh}
.side{
  width:236px;flex:0 0 236px;background:var(--ink);color:#c9d4e2;
  display:flex;flex-direction:column;position:sticky;top:0;height:100vh;overflow-y:auto;
}
.side .brand-mark{color:#fff;font-size:1.25rem;font-weight:700;letter-spacing:.02em}
.side .brand{padding:20px 20px 14px;border-bottom:1px solid rgba(255,255,255,.09)}
.brand-sub{display:block;font-size:.72rem;color:#8698ad;letter-spacing:.06em;margin-top:2px}
.nav{padding:10px 10px 24px;flex:1}
.nav-group{margin-top:14px}
.nav-label{font-size:.68rem;letter-spacing:.12em;color:#6f819a;padding:6px 12px;text-transform:uppercase}
.nav a{
  display:block;padding:8px 12px;border-radius:7px;color:#c9d4e2;font-size:.92rem;
  text-decoration:none;transition:background .12s,color .12s
}
.nav a:hover{background:rgba(255,255,255,.07);color:#fff;text-decoration:none}
.nav a.on{background:var(--brass);color:#fff;font-weight:500}
.side-foot{padding:12px 16px;border-top:1px solid rgba(255,255,255,.09);font-size:.8rem;color:#8698ad}
.side-foot a{color:#c9d4e2}

.main{flex:1;min-width:0;display:flex;flex-direction:column}
.topbar{
  background:var(--surface);border-bottom:1px solid var(--line);
  padding:14px 26px;display:flex;align-items:center;gap:14px;flex-wrap:wrap
}
.topbar h1{margin:0}
.topbar .spacer{flex:1}
.who{font-size:.85rem;color:var(--ink-soft);text-align:right;line-height:1.3}
.who strong{display:block;color:var(--ink)}
.content{padding:22px 26px 60px;max-width:1240px;width:100%}

/* ---------- কার্ড ---------- */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);margin-bottom:20px}
.card .pad,.pad{padding:18px 20px}
.card-head{padding:14px 20px;border-bottom:1px solid var(--line-soft);display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.card-head h2,.card-head h3{margin:0}
.card-head .spacer{flex:1}

.grid{display:grid;gap:16px}
.g2{grid-template-columns:repeat(2,1fr)}
.g3{grid-template-columns:repeat(3,1fr)}
.g4{grid-template-columns:repeat(4,1fr)}

/* ---------- KPI ---------- */
.kpi{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius);padding:16px 18px;box-shadow:var(--shadow)}
.kpi .k-label{font-size:.78rem;color:var(--ink-soft);letter-spacing:.03em}
.kpi .k-value{font-family:'IBM Plex Mono',monospace;font-variant-numeric:tabular-nums;
  font-size:1.42rem;font-weight:600;margin-top:4px;letter-spacing:-.02em}
.kpi .k-note{font-size:.76rem;color:var(--ink-soft);margin-top:2px}
.kpi.lead{background:var(--ink);border-color:var(--ink);color:#fff}
.kpi.lead .k-label,.kpi.lead .k-note{color:#9fb0c6}
.kpi.lead .k-value{color:#fff;font-size:1.9rem}

/* ইনভেস্টমেন্টের স্তরচিত্র — এই সিস্টেমের স্বাক্ষর */
.stack{display:flex;height:26px;border-radius:6px;overflow:hidden;border:1px solid var(--line);margin:6px 0 12px}
.stack span{display:block;height:100%}
.stack-key{display:flex;flex-wrap:wrap;gap:14px;font-size:.82rem;color:var(--ink-soft)}
.stack-key i{display:inline-block;width:10px;height:10px;border-radius:2px;margin-right:6px}
.s1{background:#132135}.s2{background:#3d5673}.s3{background:#9a6b16}.s4{background:#c9a25a}.s5{background:#b9c4d1}

/* ---------- টেবিল ---------- */
.table-wrap{overflow-x:auto}
table{width:100%;border-collapse:collapse;font-size:.9rem}
th,td{padding:9px 12px;border-bottom:1px solid var(--line-soft);text-align:left;vertical-align:top}
thead th{
  background:#f7f9fb;color:var(--ink-soft);font-weight:600;font-size:.78rem;
  letter-spacing:.04em;border-bottom:1px solid var(--line);position:sticky;top:0
}
tbody tr:hover{background:#fafbfd}
tfoot td{font-weight:600;border-top:2px solid var(--line);background:#f7f9fb}
.empty{padding:34px 20px;text-align:center;color:var(--ink-soft)}

/* ---------- ফর্ম ---------- */
label{display:block;margin-bottom:12px;font-size:.86rem;font-weight:500;color:var(--ink-2)}
input,select,textarea{
  width:100%;padding:8px 11px;margin-top:4px;border:1px solid var(--line);border-radius:7px;
  font-family:inherit;font-size:.93rem;background:#fff;color:var(--ink)
}
input:focus,select:focus,textarea:focus{outline:2px solid var(--brass);outline-offset:-1px;border-color:var(--brass)}
input[type=number],input[type=date]{font-family:'IBM Plex Mono',monospace}
.row{display:grid;gap:14px}
.r2{grid-template-columns:repeat(2,1fr)}
.r3{grid-template-columns:repeat(3,1fr)}
.r4{grid-template-columns:repeat(4,1fr)}
.inline-form{display:flex;gap:10px;align-items:flex-end;flex-wrap:wrap}
.inline-form label{margin-bottom:0}

.btn{
  display:inline-block;background:var(--ink);color:#fff;border:1px solid var(--ink);
  padding:9px 18px;border-radius:7px;font-family:inherit;font-size:.9rem;font-weight:500;
  cursor:pointer;transition:background .12s
}
.btn:hover{background:var(--ink-2);text-decoration:none;color:#fff}
.btn.block{width:100%;margin-top:6px}
.btn.ghost{background:#fff;color:var(--ink);border-color:var(--line)}
.btn.ghost:hover{background:#f4f6f9;color:var(--ink)}
.btn.small{padding:5px 11px;font-size:.8rem}
.btn.danger{background:var(--neg);border-color:var(--neg)}

.flash{padding:11px 15px;border-radius:8px;margin-bottom:14px;font-size:.9rem;border:1px solid}
.flash.ok{background:#eaf5f0;border-color:#b9dccb;color:#1c6b52}
.flash.err{background:#fbeceb;border-color:#eec4c0;color:var(--neg)}
.flash.warn{background:#fdf5e6;border-color:#ecd9ac;color:var(--brass)}

.tag{display:inline-block;padding:2px 9px;border-radius:20px;font-size:.74rem;background:var(--brass-soft);color:var(--brass);border:1px solid #e8dcc2}
.tag.grey{background:#f0f3f7;color:var(--ink-soft);border-color:var(--line)}

/* ---------- লগইন ---------- */
.auth-body{display:flex;align-items:center;justify-content:center;min-height:100vh;background:var(--ink);padding:20px}
.auth-card{background:#fff;border-radius:14px;padding:32px;width:100%;max-width:400px;box-shadow:0 20px 60px rgba(0,0,0,.3)}
.auth-card .brand{margin-bottom:20px;text-align:center}
.auth-card .brand-mark{font-size:1.7rem;font-weight:700;color:var(--ink)}
.auth-card .brand-sub{color:var(--ink-soft);letter-spacing:.08em;font-size:.72rem}

@media (max-width:900px){
  .g4{grid-template-columns:repeat(2,1fr)}
  .g3,.g2{grid-template-columns:1fr}
  .r3,.r4{grid-template-columns:repeat(2,1fr)}
}
@media (max-width:760px){
  .shell{flex-direction:column}
  .side{width:100%;flex:none;height:auto;position:static}
  .side .nav{display:flex;flex-wrap:wrap;gap:4px;padding:10px}
  .nav-group{margin:0}
  .nav-label{display:none}
  .content,.topbar{padding-left:14px;padding-right:14px}
  .r2,.r3,.r4{grid-template-columns:1fr}
  .g4{grid-template-columns:1fr}
}
@media print{
  .side,.topbar,.no-print,.btn{display:none!important}
  body{background:#fff}.card{box-shadow:none;border:none}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important}}