:root{
  --bg:#f4f6f9; --card:#fff; --ink:#1f2933; --muted:#7b8794;
  --line:#e1e5ea; --primary:#2563eb; --primary-d:#1d4ed8;
  --danger:#dc2626; --danger-d:#b91c1c; --ok:#16a34a;
}
*{box-sizing:border-box}
body{margin:0;font-family:'Segoe UI',Arial,sans-serif;background:var(--bg);color:var(--ink)}

/* ---------- Login ---------- */
.login-bg{display:flex;align-items:center;justify-content:center;min-height:100vh;
  background:linear-gradient(135deg,#1e3a8a,#2563eb)}
.login-card{background:#fff;padding:34px;border-radius:14px;width:360px;
  box-shadow:0 18px 50px rgba(0,0,0,.25)}
.login-card h1{margin:0 0 4px;font-size:20px}
.login-card .sub{margin:0 0 18px;color:var(--muted);font-size:13px}
.login-card label{display:block;margin:12px 0;font-size:13px;font-weight:600}
.login-card input{width:100%;padding:10px 12px;margin-top:5px;border:1px solid var(--line);
  border-radius:8px;font-size:14px}
.otp-input{letter-spacing:8px;text-align:center;font-size:20px!important}
.hint{font-size:12px;color:var(--muted);margin-top:14px;text-align:center}
.resend{text-align:center;margin-top:10px}
.alert{padding:9px 12px;border-radius:8px;font-size:13px;margin-bottom:10px}
.alert.err{background:#fee2e2;color:#991b1b}

/* ---------- Layout ---------- */
.topbar{display:flex;align-items:center;gap:24px;background:#fff;padding:0 22px;
  height:58px;border-bottom:1px solid var(--line);position:sticky;top:0;z-index:10}
.topbar .brand{font-weight:700}
.topbar nav{display:flex;gap:6px;flex:1}
.topbar nav a{padding:8px 14px;border-radius:8px;text-decoration:none;color:var(--ink);
  font-size:14px}
.topbar nav a.on,.topbar nav a:hover{background:#eef2ff;color:var(--primary-d)}
.userbox{display:flex;align-items:center;gap:14px;font-size:13px}
.container{max-width:1100px;margin:22px auto;padding:0 18px}
.foot{text-align:center;color:var(--muted);padding:20px}

.page-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:14px}
.page-head h2,.page-head h3{margin:0}
.head-controls{display:flex;align-items:center;gap:14px}
.fy-label{font-size:13px;font-weight:600;display:flex;align-items:center;gap:8px}

.card{background:var(--card);border:1px solid var(--line);border-radius:12px;
  padding:18px;margin-bottom:18px}
.card h3{margin:0 0 14px}
.seller-banner{line-height:1.5}

/* ---------- Forms ---------- */
label{display:block;font-size:13px;font-weight:600;margin-bottom:12px}
input,select,textarea{width:100%;padding:9px 11px;margin-top:5px;border:1px solid var(--line);
  border-radius:8px;font-size:14px;font-family:inherit;background:#fff}
input:focus,select:focus,textarea:focus{outline:2px solid #bfdbfe;border-color:var(--primary)}
.grid2{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.grid3{display:grid;grid-template-columns:1fr 1fr 1fr;gap:14px}

/* ---------- Buttons ---------- */
.btn{display:inline-block;padding:9px 16px;border:1px solid var(--line);background:#fff;
  border-radius:8px;font-size:14px;cursor:pointer;text-decoration:none;color:var(--ink);
  font-family:inherit}
.btn:hover{background:#f3f4f6}
.btn.primary{background:var(--primary);color:#fff;border-color:var(--primary)}
.btn.primary:hover{background:var(--primary-d)}
.btn.danger{background:var(--danger);color:#fff;border-color:var(--danger)}
.btn.danger:hover{background:var(--danger-d)}
.btn.sm{padding:5px 10px;font-size:12px}
.btn.full{width:100%;margin-top:8px}
.btn-link{background:none;border:none;color:var(--primary);cursor:pointer;
  text-decoration:underline;font-size:13px}

/* ---------- Tables ---------- */
table.grid{width:100%;border-collapse:collapse;font-size:13px}
table.grid th,table.grid td{padding:9px 10px;border-bottom:1px solid var(--line);text-align:left}
table.grid th{background:#f8fafc;font-weight:600;color:#475569}
table.grid td.r,table.grid th.r{text-align:right}
table.grid .actions{display:flex;gap:6px}
.muted{color:var(--muted);text-align:center;padding:20px!important}
table.grid input{margin:0;padding:5px 7px;font-size:12px}

/* ---------- Totals ---------- */
.totals{margin-top:16px;display:flex;flex-direction:column;align-items:flex-end;gap:6px}
.totals div{display:flex;gap:30px;font-size:14px;min-width:280px;justify-content:space-between}
.totals .grand{font-size:17px;font-weight:700;border-top:2px solid var(--ink);
  padding-top:8px;margin-top:4px}
.totals .words{font-size:12px;color:var(--muted);min-width:100%;justify-content:flex-end}

.form-actions{display:flex;justify-content:flex-end;gap:10px;margin-bottom:30px}

/* ---------- Modal ---------- */
.modal-overlay{display:none;position:fixed;inset:0;background:rgba(15,23,42,.55);
  align-items:flex-start;justify-content:center;z-index:50;padding:40px 16px;overflow:auto}
.modal-overlay.show{display:flex}
.modal{background:#fff;border-radius:14px;width:560px;max-width:100%;
  box-shadow:0 20px 60px rgba(0,0,0,.3)}
.modal-head{display:flex;align-items:center;justify-content:space-between;
  padding:18px 22px;border-bottom:1px solid var(--line)}
.modal-head h3{margin:0}
.modal .x{background:none;border:none;font-size:24px;cursor:pointer;color:var(--muted);
  width:auto;padding:0}
.modal form{padding:22px}
.modal-foot{display:flex;justify-content:flex-end;gap:10px;margin-top:10px}

@media(max-width:720px){
  .grid2,.grid3{grid-template-columns:1fr}
  .container{padding:0 12px}
}