:root{--bg:#f4f6fb;--card:#fff;--ink:#1f2937;--mut:#6b7280;--line:#e5e7eb;--pri:#4f46e5;--pri2:#4338ca;--side:#111827;--ok:#16a34a;--bad:#dc2626;--warn:#f59e0b}
*{box-sizing:border-box}
body{margin:0;font-family:Inter,"Segoe UI",Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink);font-size:14px;line-height:1.45}
a{color:var(--pri);text-decoration:none}a:hover{text-decoration:underline}
.side{position:fixed;top:0;left:0;bottom:0;width:230px;background:var(--side);color:#fff;padding:16px 10px;overflow:auto}
.brand{padding:6px 10px 14px;border-bottom:1px solid #ffffff1f;margin-bottom:10px}
.brand b{display:block;font-size:16px}.brand small{color:#9ca3af;font-size:11px}
.side a{display:flex;gap:10px;align-items:center;padding:9px 12px;color:#d1d5db;border-radius:8px;margin:2px 0}
.side a:hover{background:#ffffff14;color:#fff;text-decoration:none}
.side a.on{background:var(--pri);color:#fff}
.side .sep{font-size:10px;letter-spacing:1px;color:#6b7280;margin:14px 12px 4px;text-transform:uppercase}
.pill{margin-left:auto;background:var(--bad);color:#fff;border-radius:10px;font-size:11px;padding:0 7px}
.main{margin-left:230px;padding:0 26px 26px}
.topbar{display:flex;gap:12px;align-items:center;justify-content:space-between;padding:14px 0;position:sticky;top:0;background:var(--bg);z-index:5}
.topbar form{display:flex;gap:6px;flex:1;max-width:460px}
.topbar .who{color:var(--mut);font-size:13px}
.top{display:flex;justify-content:space-between;align-items:center;margin:6px 0 16px;gap:10px;flex-wrap:wrap}
.top h1{margin:0;font-size:24px}
.card{background:var(--card);border-radius:14px;padding:18px;margin-bottom:18px;box-shadow:0 1px 2px #0000000d,0 4px 14px #0000000a}
.card h3{margin:0 0 12px;font-size:16px}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(190px,1fr));gap:14px;margin-bottom:18px}
.stat{background:var(--card);border-radius:14px;padding:16px;box-shadow:0 1px 2px #0000000d,0 4px 14px #0000000a;position:relative;overflow:hidden}
.stat span{color:var(--mut);font-size:12px;text-transform:uppercase;letter-spacing:.5px}
.stat b{display:block;font-size:23px;margin-top:6px}
.stat:before{content:"";position:absolute;left:0;top:0;bottom:0;width:5px;background:var(--pri)}
.stat.g:before{background:var(--ok)}.stat.r:before{background:var(--bad)}.stat.o:before{background:var(--warn)}
.cols{display:grid;grid-template-columns:1fr 1fr;gap:18px}
table{width:100%;border-collapse:collapse}
th,td{padding:9px 10px;text-align:left;border-bottom:1px solid var(--line);vertical-align:middle}
th{font-size:11px;text-transform:uppercase;color:var(--mut);letter-spacing:.5px}
tr:hover td{background:#f9fafb}
.r{text-align:right}
.scroll{overflow-x:auto}
input,select,textarea{width:100%;padding:9px 11px;border:1px solid #d1d5db;border-radius:9px;font:inherit;background:#fff}
input:focus,select:focus,textarea:focus{outline:2px solid #c7d2fe;border-color:var(--pri)}
label{display:block;font-weight:600;margin:10px 0 4px;font-size:13px}
.form2{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
.btn{display:inline-block;background:var(--pri);color:#fff;border:0;border-radius:9px;padding:9px 15px;cursor:pointer;font:inherit;font-weight:600}
.btn:hover{background:var(--pri2);text-decoration:none}
.btn.sec{background:#e5e7eb;color:#111827}.btn.sec:hover{background:#d1d5db}
.btn.red{background:var(--bad)}.btn.green{background:var(--ok)}.btn.sm{padding:4px 10px;font-size:12px}
.inline{display:inline}.bar{display:flex;gap:8px;margin-bottom:14px;flex-wrap:wrap;align-items:center}
.bar input,.bar select{width:auto;min-width:130px}
.flash{padding:11px 14px;border-radius:10px;margin-bottom:14px}
.flash.ok{background:#dcfce7;color:#166534}.flash.error{background:#fee2e2;color:#991b1b}
.badge{padding:3px 10px;border-radius:12px;font-size:12px;background:#e5e7eb;font-weight:600;white-space:nowrap}
.badge.Confirmed,.badge.Submitted{background:#dbeafe;color:#1e40af}
.badge.Completed,.badge.Approved,.badge.Delivered{background:#dcfce7;color:#166534}
.badge.Cancelled,.badge.Rejected{background:#fee2e2;color:#991b1b}
.badge.Pending,.badge.Processing{background:#fef3c7;color:#92400e}
.due{color:var(--bad);font-weight:700}.paid{color:var(--ok);font-weight:700}
.muted{color:var(--mut)}
.bars div.row{display:flex;align-items:center;gap:8px;margin:6px 0}
.bars .lab{width:78px;color:var(--mut);font-size:12px}
.bars .fill{background:linear-gradient(90deg,#6366f1,#818cf8);height:16px;border-radius:8px}
.donut{width:150px;height:150px;border-radius:50%;margin:0 auto 10px}
.legend span{display:inline-block;margin:3px 8px 3px 0;font-size:12px}
.legend i{display:inline-block;width:10px;height:10px;border-radius:50%;margin-right:4px}
.steps{display:flex;gap:4px;margin:6px 0}
.steps i{flex:1;height:6px;border-radius:3px;background:#e5e7eb}.steps i.on{background:var(--pri)}
.loginwrap{min-height:100vh;display:flex;align-items:center;justify-content:center;background:linear-gradient(135deg,#312e81,#4f46e5 55%,#06b6d4)}
.loginbox{width:380px;background:#fff;border-radius:18px;padding:30px;box-shadow:0 20px 50px #0004}
.inv{max-width:820px;margin:0 auto;background:#fff;padding:30px;border-radius:6px}
.inv header{text-align:center;border-bottom:2px solid var(--pri);padding-bottom:10px;margin-bottom:16px}
.inv h1{margin:0;color:var(--pri)}
.empty{text-align:center;color:var(--mut);padding:18px}
@media print{.side,.noprint,.topbar{display:none!important}.main{margin:0;padding:0}body{background:#fff}.inv,.card{box-shadow:none;padding:0}}
@media(max-width:860px){.side{position:static;width:auto}.main{margin:0;padding:0 12px}.form2,.cols{grid-template-columns:1fr}}
.pager{display:flex;gap:12px;align-items:center;justify-content:center;padding:12px}
.bell{position:relative;text-decoration:none;font-size:20px}.bell .pill{position:absolute;top:-6px;right:-10px;margin:0;background:var(--mut)}.bell .pill.urgent{background:var(--bad)}

.burger{display:none;background:var(--pri);color:#fff;border:0;border-radius:8px;font-size:20px;padding:6px 12px;cursor:pointer}
.scrim{display:none}
.tscroll{overflow-x:auto;-webkit-overflow-scrolling:touch}
@media(max-width:860px){
  .burger{display:inline-block}
  .side{position:fixed;transform:translateX(-100%);transition:transform .2s;z-index:30;width:260px}
  body.navopen .side{transform:none}
  body.navopen .scrim{display:block;position:fixed;inset:0;background:#0007;z-index:20}
  .main{margin:0;padding:0 12px 20px}
  .topbar{flex-wrap:wrap;gap:8px}.topbar form{order:3;max-width:none;flex-basis:100%}
  .top h1{font-size:20px}
  .btn,button,input,select{min-height:40px}
  .grid,.cards,.stats{grid-template-columns:repeat(2,1fr)!important}
  table{font-size:13px}
  td,th{white-space:nowrap}
}
@media(max-width:480px){.grid,.cards,.stats{grid-template-columns:1fr!important}}
@media print{.burger,.scrim{display:none!important}}

/* ---- Professional theme ---- */
:root{--pri:#2563eb;--pri2:#1d4ed8;--side:#0f172a;--bg:#f1f5f9;--shadow:0 1px 3px #0f172a14,0 8px 24px #0f172a0d}
body{font-family:Inter,"Segoe UI","Noto Sans Bengali",Roboto,Arial,sans-serif;-webkit-font-smoothing:antialiased}
.side{background:linear-gradient(180deg,#0f172a,#1e293b);box-shadow:2px 0 12px #0003}
.side::-webkit-scrollbar{width:6px}.side::-webkit-scrollbar-thumb{background:#ffffff2a;border-radius:3px}
.brand{background:#ffffff0d;border:1px solid #ffffff14;border-radius:12px;padding:12px 14px;margin-bottom:12px}
.brand b{font-size:15px;letter-spacing:.2px}
.side a{font-size:13.5px;transition:background .15s,transform .15s}
.side a:hover{transform:translateX(2px)}
.side a.on{background:linear-gradient(90deg,#2563eb,#3b82f6);box-shadow:0 4px 12px #2563eb55;font-weight:600}
.side .sep{color:#64748b;font-weight:700}
.topbar{background:#f1f5f9ee;backdrop-filter:blur(8px);border-bottom:1px solid var(--line);margin:0 -26px 18px;padding:12px 26px}
.topbar input{border-radius:22px;padding-left:16px}
.themebtn{background:var(--card);border:1px solid var(--line);border-radius:50%;width:36px;height:36px;cursor:pointer;font-size:16px;min-height:0!important}
.who{background:var(--card);border:1px solid var(--line);border-radius:20px;padding:6px 12px}
.top h1{font-size:22px;font-weight:700;letter-spacing:-.2px}
.card,.stat{box-shadow:var(--shadow);border:1px solid #e2e8f0}
.card h3{padding-bottom:10px;border-bottom:1px solid var(--line)}
.stat{transition:transform .15s,box-shadow .15s}.stat:hover{transform:translateY(-2px);box-shadow:0 10px 28px #0f172a1a}
.stat b{font-size:24px;font-weight:700}
th{background:#f8fafc;position:sticky;top:0;font-weight:700}
tbody tr:hover td,tr:hover td{background:#f8fafc}
.btn{background:linear-gradient(180deg,#3b82f6,#2563eb);box-shadow:0 1px 2px #0f172a33;transition:filter .15s,transform .1s}
.btn:hover{filter:brightness(1.07);background:linear-gradient(180deg,#3b82f6,#2563eb)}.btn:active{transform:translateY(1px)}
.btn.sec{background:#e2e8f0;box-shadow:none}.btn.red{background:linear-gradient(180deg,#ef4444,#dc2626)}.btn.green{background:linear-gradient(180deg,#22c55e,#16a34a)}
input,select,textarea{border-color:#cbd5e1;transition:border-color .15s,box-shadow .15s}
input:focus,select:focus,textarea:focus{outline:0;box-shadow:0 0 0 3px #bfdbfe;border-color:var(--pri)}
.badge{letter-spacing:.2px}
.loginwrap{background:radial-gradient(circle at 20% 20%,#3b82f6,transparent 45%),linear-gradient(135deg,#0f172a,#1e3a8a 60%,#0ea5e9)}
.loginbox{border-radius:20px;box-shadow:0 30px 70px #0006}
.flash{border-left:4px solid currentColor;box-shadow:var(--shadow)}
::selection{background:#bfdbfe}
@media(max-width:860px){.topbar{margin:0 -12px 14px;padding:10px 12px}}
@media print{.themebtn{display:none!important}}

/* ---- Dark mode ---- */
[data-theme=dark]{--bg:#0b1220;--card:#131c2e;--ink:#e2e8f0;--mut:#94a3b8;--line:#243047;--shadow:0 1px 3px #0006}
[data-theme=dark] .topbar{background:#0b1220ee}
[data-theme=dark] input,[data-theme=dark] select,[data-theme=dark] textarea{background:#0f172a;color:var(--ink);border-color:#334155}
[data-theme=dark] th,[data-theme=dark] tr:hover td{background:#18233a}
[data-theme=dark] .card,[data-theme=dark] .stat{border-color:#243047}
[data-theme=dark] .btn.sec{background:#243047;color:#e2e8f0}
[data-theme=dark] .loginbox,[data-theme=dark] .inv{background:#131c2e;color:var(--ink)}
[data-theme=dark] .flash.ok{background:#14532d;color:#bbf7d0}[data-theme=dark] .flash.error{background:#7f1d1d;color:#fecaca}
[data-theme=dark] .badge{background:#243047;color:#e2e8f0}
[data-theme=dark] a{color:#60a5fa}[data-theme=dark] .btn,[data-theme=dark] .side a{color:#fff}
@media print{[data-theme=dark] body{background:#fff;color:#000}}.stat.r{text-align:left}

/* ---- Sidebar v2 ---- */
.navfilter{background:#ffffff12!important;border:1px solid #ffffff1f!important;color:#e2e8f0!important;border-radius:10px!important;padding:8px 12px!important;margin:0 0 8px;font-size:13px}
.navfilter::placeholder{color:#94a3b8}
.navfilter:focus{box-shadow:0 0 0 2px #3b82f6aa!important;border-color:#3b82f6!important}
.side .sep.fold{display:flex;justify-content:space-between;align-items:center;cursor:pointer;user-select:none;margin:10px 4px 2px;padding:7px 10px;border-radius:8px;color:#94a3b8;font-size:11px;letter-spacing:1.2px}
.side .sep.fold:hover{background:#ffffff0f;color:#e2e8f0}
.side .sep.fold:after{content:"";width:7px;height:7px;border-right:2px solid currentColor;border-bottom:2px solid currentColor;transform:rotate(45deg);transition:transform .2s;margin-right:3px}
.side .sep.fold.shut:after{transform:rotate(-45deg)}
.side .grp{margin-left:6px;padding-left:8px;border-left:1px solid #ffffff1a}
.side .grp[hidden]{display:none}
.side .grp a{padding:7px 10px;font-size:13px;border-radius:7px}
.side{scrollbar-width:thin;scrollbar-color:#ffffff30 transparent}
@media print{.navfilter{display:none}}