:root{
  /* هوية حصيلة: كحلي #0B1B3A، أزرق #1E5FFF، أزرق فاتح #4F8AFF */
  --bg:#f5f7fb; --surface:#fff; --ink:#0B1B3A; --muted:#5b6b8a; --line:#e3e8f2;
  --brand:#1E5FFF; --brand-ink:#fff; --brand-soft:#e9efff; --brand-2:#4F8AFF;
  --ok:#157f4a; --ok-bg:#e7f6ee; --warn:#a15c07; --warn-bg:#fdf1dc; --bad:#b42318; --bad-bg:#fdebe9; --info:#175cd3; --info-bg:#e8f0fe;
  --r:12px; --shadow:0 1px 2px rgba(16,24,40,.06),0 1px 3px rgba(16,24,40,.08);
  --nav-h:64px;
}
@media (prefers-color-scheme:dark){
  :root{--bg:#0B1B3A;--surface:#11254d;--ink:#fff;--muted:#a9b6d3;--line:#1f3766;--brand:#4F8AFF;--brand-ink:#0B1B3A;--brand-soft:#17336d;
    --ok:#4ade80;--ok-bg:#12301f;--warn:#fbbf24;--warn-bg:#35280c;--bad:#f87171;--bad-bg:#3a1613;--info:#7aa7ff;--info-bg:#14264a;--shadow:none}
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 "IBM Plex Sans Arabic","Noto Sans Arabic",system-ui,-apple-system,"Segoe UI",sans-serif}
h1,h2,h3{margin:0;line-height:1.3}
button,input,select,textarea{font:inherit;color:inherit}
a{color:var(--brand);text-decoration:none}
.num{font-variant-numeric:tabular-nums;direction:ltr;unicode-bidi:isolate;display:inline-block}

/* الهيكل */
.shell{min-height:100vh;display:flex;flex-direction:column}
.topbar{position:sticky;top:0;z-index:10;background:var(--surface);border-bottom:1px solid var(--line);display:flex;align-items:center;gap:12px;padding:10px 16px;padding-top:max(10px,env(safe-area-inset-top))}
.topbar h1{font-size:18px;flex:1}
.biz{font-size:13px;color:var(--muted);border:1px solid var(--line);background:var(--bg);border-radius:999px;padding:4px 12px}
main{flex:1;padding:16px;padding-bottom:calc(var(--nav-h) + 24px + env(safe-area-inset-bottom));max-width:980px;width:100%;margin:0 auto}
.nav{position:fixed;inset-inline:0;bottom:0;z-index:10;background:var(--surface);border-top:1px solid var(--line);display:flex;padding-bottom:env(safe-area-inset-bottom)}
.nav a{flex:1;min-height:var(--nav-h);display:flex;flex-direction:column;align-items:center;justify-content:center;gap:2px;color:var(--muted);font-size:12px}
.nav a svg{width:22px;height:22px}
.nav a.on{color:var(--brand);font-weight:700}
@media (min-width:860px){
  .shell{flex-direction:row}
  .side{position:sticky;top:0;height:100vh;width:230px;flex:none;background:var(--surface);border-inline-end:1px solid var(--line);display:flex;flex-direction:column;padding:16px 12px;gap:4px}
  .side .brand{padding:12px 20px 24px}
  .side a{display:flex;gap:10px;align-items:center;padding:10px 12px;border-radius:10px;color:var(--ink)}
  .side a.on{background:var(--brand-soft);color:var(--brand);font-weight:700}
  .side a svg{width:20px;height:20px}
  .nav{display:none}
  .col{flex:1;min-width:0;display:flex;flex-direction:column}
  main{padding-bottom:32px}
}
@media (max-width:859px){.side{display:none}.col{display:contents}}

/* مكونات */
.card{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:16px}
.card + .card,.stack > * + *{margin-top:12px}
.row{display:flex;align-items:center}.row.wrap{flex-wrap:wrap}.row.between{justify-content:space-between}.row.end{justify-content:flex-end}.gap{gap:10px}
.grow{flex:1;min-width:0}
.muted{color:var(--muted)} .small{font-size:13px}
.title-row{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:12px}
.title-row h2{font-size:20px}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:6px;min-height:44px;padding:0 16px;border-radius:10px;border:1px solid var(--line);background:var(--surface);cursor:pointer;font-weight:500}
.btn.primary{background:var(--brand);border-color:var(--brand);color:var(--brand-ink);font-weight:700}
.btn.danger{background:var(--bad);border-color:var(--bad);color:#fff}
.btn.block{width:100%}
.btn:disabled{opacity:.55;cursor:not-allowed}
.btn.loading::after{content:"";width:14px;height:14px;border:2px solid currentColor;border-inline-end-color:transparent;border-radius:50%;animation:spin .7s linear infinite}
@keyframes spin{to{transform:rotate(360deg)}}
.icon-btn{border:0;background:transparent;min-width:40px;min-height:40px;border-radius:10px;cursor:pointer;font-size:18px}
.btn:focus-visible,.icon-btn:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible,a:focus-visible{outline:2px solid var(--brand);outline-offset:2px}
.field{display:block;margin-bottom:12px}
.field .lbl{display:block;font-size:14px;margin-bottom:4px;color:var(--muted)}
.field input,.field select,.field textarea,.search{width:100%;min-height:44px;padding:8px 12px;border:1px solid var(--line);border-radius:10px;background:var(--surface)}
.field .hint{font-size:12px;color:var(--muted)} .field .err{display:block;font-size:13px;color:var(--bad);margin-top:2px}
input[inputmode="decimal"]{direction:ltr;text-align:end}
.badge{display:inline-block;font-size:12px;padding:2px 10px;border-radius:999px;font-weight:700}
.badge.ok{background:var(--ok-bg);color:var(--ok)}.badge.warn{background:var(--warn-bg);color:var(--warn)}.badge.bad{background:var(--bad-bg);color:var(--bad)}.badge.info{background:var(--info-bg);color:var(--info)}.badge.muted{background:var(--bg);color:var(--muted)}
.list{list-style:none;margin:0;padding:0}
.item{display:flex;align-items:center;gap:12px;padding:12px 14px;background:var(--surface);border:1px solid var(--line);border-radius:var(--r);color:inherit;cursor:pointer;min-height:56px}
.item + .item{margin-top:8px}
.item .t{font-weight:700}.item .s{font-size:13px;color:var(--muted)}
.item .end{text-align:end}
.stats{display:grid;grid-template-columns:repeat(2,1fr);gap:10px}
@media (min-width:640px){.stats{grid-template-columns:repeat(3,1fr)}}
.stat{background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:14px}
.stat .k{font-size:13px;color:var(--muted)} .stat .v{font-size:22px;font-weight:700;margin-top:2px}
.stat.good .v{color:var(--ok)}.stat.bad .v{color:var(--bad)}
.tabs{display:flex;gap:6px;overflow-x:auto;margin-bottom:12px}
.tab{padding:8px 14px;border-radius:999px;border:1px solid var(--line);background:var(--surface);cursor:pointer;white-space:nowrap}
.tab.on{background:var(--brand);color:var(--brand-ink);border-color:var(--brand);font-weight:700}
.empty{text-align:center;padding:40px 16px;color:var(--muted)}
.skeleton i{display:block;height:56px;border-radius:var(--r);background:linear-gradient(90deg,var(--line),var(--surface),var(--line));background-size:200% 100%;animation:sh 1.2s infinite;margin-bottom:8px}
@keyframes sh{to{background-position:-200% 0}}
.banner{padding:10px 14px;border-radius:10px;margin-bottom:12px;background:var(--warn-bg);color:var(--warn)}
.kv{display:grid;grid-template-columns:auto 1fr;gap:6px 16px}.kv dt{color:var(--muted)}.kv dd{margin:0;text-align:end}

/* فاتورة جديدة */
.lines .line{border:1px solid var(--line);border-radius:10px;padding:10px;margin-bottom:8px;background:var(--surface)}
.line .grid{display:grid;grid-template-columns:1fr 1fr 1fr;gap:8px;margin-top:8px}
.line .grid .field{margin:0}
.totalbar{position:sticky;bottom:calc(var(--nav-h) + env(safe-area-inset-bottom));background:var(--surface);border:1px solid var(--line);border-radius:var(--r);padding:12px;box-shadow:var(--shadow);margin-top:12px}
@media (min-width:860px){.totalbar{bottom:12px}}
.totalbar .big{font-size:22px;font-weight:700}
.picker{max-height:50vh;overflow:auto}

/* نوافذ وتنبيهات */
.overlay{position:fixed;inset:0;background:rgba(10,15,20,.5);z-index:50;display:flex;align-items:flex-end;justify-content:center}
.modal{background:var(--surface);width:100%;max-width:520px;max-height:90vh;overflow:auto;border-radius:16px 16px 0 0;padding:16px}
@media (min-width:640px){.overlay{align-items:center}.modal{border-radius:16px}}
.modal-head{display:flex;justify-content:space-between;align-items:center;margin-bottom:8px}
#toasts{position:fixed;inset-inline:0;top:12px;z-index:100;display:flex;flex-direction:column;align-items:center;gap:8px;pointer-events:none}
.toast{pointer-events:auto;background:var(--ink);color:var(--bg);padding:10px 16px;border-radius:10px;max-width:90vw;box-shadow:0 4px 14px rgba(0,0,0,.25)}
.toast.err{background:var(--bad);color:#fff}
.login{max-width:380px;margin:12vh auto 0;padding:0 16px}
.login h1{text-align:center;margin-bottom:4px}.login p{text-align:center;color:var(--muted);margin:0 0 20px}
@media print{.topbar,.nav,.side,.no-print{display:none!important}body{background:#fff}main{padding:0}}
@media (prefers-reduced-motion:reduce){*{animation:none!important}}

/* الشعار: بدون مط أو ظل، والارتفاع يتبع العرض */
.logo{display:block}.logo img{display:block;width:100%;height:auto}
.side .logo{border-radius:10px;overflow:hidden}
.login-logo{width:220px;margin:0 auto 20px}