:root{
  --bg:#F8FAFC; --surface:#FFFFFF; --surface-2:#F1F5F9; --ink:#0F172A; --muted:#64748B; --line:#E2E8F0;
  --accent:#4F46E5; --accent-ink:#FFFFFF; --accent-soft:#EEF2FF; --accent-2:#7C3AED;
  --amber:#D97706; --amber-soft:#FEF3C7; --danger:#EF4444; --danger-soft:#FEE2E2; --ok:#10B981; --ok-soft:#D1FAE5;
  --wall:#1F2937; --floor:#F8FAFC; --u-base:#E0E7FF; --u-tall:#C7D2FE; --u-app:#F1F5F9; --u-wall:#FEF3C7;
  --shadow-sm:0 1px 2px 0 rgba(0,0,0,.05);
  --shadow:0 1px 3px 0 rgba(0,0,0,.08),0 1px 2px -1px rgba(0,0,0,.08);
  --shadow-md:0 4px 6px -1px rgba(0,0,0,.08),0 2px 4px -2px rgba(0,0,0,.08);
  --shadow-lg:0 10px 25px -3px rgba(0,0,0,.08),0 4px 6px -4px rgba(0,0,0,.08);
  --shadow-xl:0 20px 35px -5px rgba(0,0,0,.12);
  --r:14px; --r-sm:10px; --r-lg:20px;
  --font:"IBM Plex Sans Arabic", "Readex Pro", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  --mono:"IBM Plex Mono", ui-monospace, Consolas, monospace;
  --brand:"Readex Pro", "IBM Plex Sans Arabic", sans-serif;
  color-scheme:light;
}
@media (prefers-color-scheme: dark){
  :root:not([data-theme="light"]){
    color-scheme:dark;
    --bg:#0B0F19; --surface:#111827; --surface-2:#1E293B; --ink:#F8FAFC; --muted:#94A3B8; --line:#1E293B;
    --accent:#818CF8; --accent-ink:#0B0F19; --accent-soft:#1E1D3A; --accent-2:#A78BFA;
    --amber:#F59E0B; --amber-soft:#332205; --danger:#F87171; --danger-soft:#351313; --ok:#34D399; --ok-soft:#063124;
    --wall:#CBD5E1; --floor:#0A0E17; --u-base:#252A4A; --u-tall:#2F3560; --u-app:#1E293B; --u-wall:#3A2F17;
    --shadow-sm:none; --shadow:0 1px 3px rgba(0,0,0,.5); --shadow-lg:0 16px 36px -8px rgba(0,0,0,.7);
  }
}
:root[data-theme="dark"]{
  color-scheme:dark;
  --bg:#0B0F19; --surface:#111827; --surface-2:#1E293B; --ink:#F8FAFC; --muted:#94A3B8; --line:#1E293B;
  --accent:#818CF8; --accent-ink:#0B0F19; --accent-soft:#1E1D3A; --accent-2:#A78BFA;
  --amber:#F59E0B; --amber-soft:#332205; --danger:#F87171; --danger-soft:#351313; --ok:#34D399; --ok-soft:#063124;
  --wall:#CBD5E1; --floor:#0A0E17; --u-base:#252A4A; --u-tall:#2F3560; --u-app:#1E293B; --u-wall:#3A2F17;
  --shadow-sm:none; --shadow:0 1px 3px rgba(0,0,0,.5); --shadow-lg:0 16px 36px -8px rgba(0,0,0,.7);
}

*{box-sizing:border-box}
html,body{min-height:100%}
body{
  margin:0;
  background:var(--bg);
  color:var(--ink);
  font-family:var(--font);
  font-size:14px;
  line-height:1.6;
  direction:rtl;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  text-rendering:optimizeLegibility;
  font-weight:400;
}
[hidden]{display:none!important}
button,input,select,textarea{font:inherit;color:inherit}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
.num,.mono{font-family:var(--mono);font-variant-numeric:tabular-nums;direction:ltr;unicode-bidi:isolate}

/* General Icons */
.ic{
  width:18px;
  height:18px;
  display:inline-block;
  vertical-align:middle;
  stroke-width:2;
  flex-shrink:0;
  color:currentColor;
}

/* Header & Top Bar */
.top{
  position:sticky;
  top:env(safe-area-inset-top,0px);
  z-index:20;
  background:color-mix(in srgb,var(--surface) 88%,transparent);
  backdrop-filter:saturate(1.6) blur(16px);
  -webkit-backdrop-filter:saturate(1.6) blur(16px);
  border-bottom:1px solid var(--line);
  display:flex;
  flex-wrap:wrap;
  align-items:center;
  gap:12px 24px;
  padding-block:12px;
  padding-inline:24px;
  box-shadow:0 1px 2px rgba(0,0,0,.03);
}

.brand{
  display:flex;
  align-items:center;
  gap:12px;
  font-family:var(--brand);
  text-decoration:none!important;
  color:var(--ink);
}
.brand svg, .brand .brand-logo{
  width:36px;
  height:36px;
  display:block;
  border-radius:10px;
  flex-shrink:0;
  filter:drop-shadow(0 4px 10px rgba(79,70,229,.3));
  transition:transform .2s ease;
}
.brand:hover svg, .brand:hover .brand-logo{
  transform:scale(1.05);
}
.brand-info{
  display:flex;
  flex-direction:column;
  line-height:1.2;
}
.brand-title{
  font-size:20px;
  font-weight:700;
  letter-spacing:-.02em;
}
.brand-tagline{
  font-size:10px;
  letter-spacing:.08em;
  color:var(--muted);
  font-weight:600;
  font-family:var(--mono);
}

.spacer{flex:1}
.who{
  display:flex;
  align-items:center;
  gap:12px;
  font-size:13px;
  color:var(--muted);
}
.user-chip{
  display:flex;
  align-items:center;
  gap:8px;
  background:var(--surface-2);
  border:1px solid var(--line);
  padding:4px 12px 4px 8px;
  border-radius:99px;
  font-weight:500;
  color:var(--ink);
}
.user-avatar-ic{
  color:var(--accent);
}

main{
  padding-block:28px 56px;
  padding-inline:24px;
  max-width:1500px;
  margin:0 auto;
}
.card{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r);
  box-shadow:var(--shadow);
  transition:border-color .15s ease, box-shadow .15s ease;
}
.sec{
  padding:20px;
  display:flex;
  flex-direction:column;
  gap:14px;
}
h1,h2,h3{margin:0;text-wrap:balance;color:var(--ink)}
h1{font-size:26px;font-weight:700;letter-spacing:-.02em}
h2{font-size:18px;font-weight:600;letter-spacing:-.01em}
h3{font-size:14px;font-weight:600}
.eyebrow{
  font-size:12px;
  color:var(--accent);
  font-weight:600;
  text-transform:uppercase;
  letter-spacing:.04em;
}
.hint{color:var(--muted);font-size:13px;margin:0}
.row{display:flex;gap:10px;flex-wrap:wrap;align-items:center}

.field{display:grid;grid-template-columns:1fr 110px;align-items:center;gap:10px}
.field label{color:var(--muted);font-size:13px;font-weight:500}
.field.full{grid-template-columns:1fr}
.stack{display:flex;flex-direction:column;gap:6px}
.stack label{color:var(--ink);font-size:13px;font-weight:500}

/* Inputs & Form Controls */
.field-wrap{
  position:relative;
  display:flex;
  align-items:center;
  width:100%;
}
.field-wrap .field-ic{
  position:absolute;
  right:13px;
  pointer-events:none;
  color:var(--muted);
  display:flex;
  align-items:center;
}
.field-wrap input{
  padding-right:40px!important;
}
.pw-toggle{
  position:absolute;
  left:8px;
  background:transparent;
  border:0;
  padding:6px;
  cursor:pointer;
  color:var(--muted);
  display:flex;
  align-items:center;
  border-radius:6px;
  transition:color .15s ease;
}
.pw-toggle:hover{color:var(--ink)}

input[type=number],input[type=text],input[type=email],input[type=password],input[type=search],input[type=tel],input[type=date],select,textarea{
  background:var(--surface);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  padding:10px 14px;
  width:100%;
  min-width:0;
  box-shadow:var(--shadow-sm);
  transition:border-color .15s ease,box-shadow .15s ease,background .15s ease;
  color:var(--ink);
  font-size:14px;
}
input:hover,select:hover,textarea:hover{
  border-color:color-mix(in srgb,var(--muted) 40%,var(--line));
}
input[type=number]{font-family:var(--mono);direction:ltr;text-align:left}
input[type=email],input[type=password]{direction:ltr;text-align:right}
input:focus-visible,select:focus-visible,textarea:focus-visible{
  outline:none;
  border-color:var(--accent);
  box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 18%,transparent);
}
button:focus-visible,a:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:2px;
}
input:disabled,select:disabled{opacity:.6;cursor:not-allowed}

/* Buttons */
.btn{
  border:1px solid var(--line);
  background:var(--surface);
  border-radius:var(--r-sm);
  padding:9px 16px;
  cursor:pointer;
  font-weight:500;
  font-family:var(--font);
  text-decoration:none!important;
  color:var(--ink);
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:8px;
  box-shadow:var(--shadow-sm);
  transition:all .15s cubic-bezier(0.4, 0, 0.2, 1);
  font-size:13.5px;
  user-select:none;
}
.btn:hover{
  background:var(--surface-2);
  border-color:color-mix(in srgb,var(--muted) 30%,var(--line));
  transform:translateY(-1px);
  box-shadow:var(--shadow);
}
.btn:active{transform:translateY(0);box-shadow:var(--shadow-sm)}
.btn.primary{
  background:linear-gradient(135deg,var(--accent),var(--accent-2));
  color:var(--accent-ink);
  border-color:transparent;
  box-shadow:0 2px 8px -1px color-mix(in srgb,var(--accent) 45%,transparent);
  font-weight:600;
}
.btn.primary:hover{
  background:linear-gradient(135deg,color-mix(in srgb,var(--accent) 92%,#000),color-mix(in srgb,var(--accent-2) 92%,#000));
  box-shadow:0 4px 14px -1px color-mix(in srgb,var(--accent) 55%,transparent);
}
.btn.danger{color:var(--danger);border-color:color-mix(in srgb,var(--danger) 25%,transparent)}
.btn.danger:hover{background:var(--danger-soft);border-color:transparent}
.btn-ghost{background:transparent;border-color:transparent;box-shadow:none}
.btn-ghost:hover{background:var(--surface-2);border-color:transparent}
.btn:disabled{opacity:.55;cursor:not-allowed;transform:none!important;box-shadow:none!important}

/* Segmented Control */
.seg{
  display:flex;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:var(--r-sm);
  padding:3px;
  gap:3px;
}
.seg button{
  flex:1;
  border:0;
  background:transparent;
  padding:8px 12px;
  border-radius:7px;
  cursor:pointer;
  color:var(--muted);
  font-size:13px;
  font-weight:500;
  white-space:nowrap;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:6px;
  transition:all .15s ease;
}
.seg button:hover{color:var(--ink)}
.seg button[aria-pressed="true"]{
  background:var(--surface);
  color:var(--ink);
  font-weight:600;
  box-shadow:var(--shadow-sm);
}

/* Tabs */
.tabs-wrap{overflow-x:auto;min-width:0}
.tabs{
  display:flex;
  gap:4px;
  background:var(--surface-2);
  border:1px solid var(--line);
  border-radius:12px;
  padding:4px;
  width:max-content;
}
.tabs button{
  border:0;
  background:transparent;
  padding:8px 16px;
  border-radius:8px;
  cursor:pointer;
  white-space:nowrap;
  color:var(--muted);
  font-weight:500;
  display:inline-flex;
  align-items:center;
  gap:6px;
  transition:all .15s ease;
}
.tabs button:hover{color:var(--ink)}
.tabs button[aria-selected="true"]{
  background:var(--surface);
  color:var(--accent);
  font-weight:600;
  box-shadow:var(--shadow-sm);
}

/* Pills & Badges */
.pill{
  display:inline-flex;
  align-items:center;
  gap:5px;
  padding:3px 10px;
  border-radius:99px;
  font-size:11.5px;
  font-weight:600;
  background:var(--accent-soft);
  color:var(--accent);
  white-space:nowrap;
}
.pill.front,.pill.st-quoted{background:var(--amber-soft);color:var(--amber)}
.pill.back,.pill.st-draft{background:var(--surface-2);color:var(--muted);border:1px solid var(--line)}
.pill.st-approved,.pill.st-installed{background:var(--ok-soft);color:var(--ok)}
.pill.st-making{background:var(--accent-soft);color:var(--accent)}

/* Tables */
.tbl-wrap{overflow-x:auto;border-radius:var(--r);border:1px solid var(--line)}
table.t{border-collapse:collapse;width:100%;font-size:13.5px}
table.t th{
  text-align:right;
  font-weight:600;
  color:var(--muted);
  font-size:12px;
  padding:12px 16px;
  border-bottom:1px solid var(--line);
  background:var(--surface-2);
  white-space:nowrap;
}
table.t td{
  padding:13px 16px;
  border-bottom:1px solid var(--line);
  white-space:nowrap;
  color:var(--ink);
}
table.t tbody tr{transition:background .1s ease}
table.t tbody tr:hover td{background:color-mix(in srgb,var(--surface-2) 60%,transparent)}
table.t tbody tr:last-child td{border-bottom:0}
table.t td.n{font-family:var(--mono);font-variant-numeric:tabular-nums;text-align:left;direction:ltr}
table.t tr.grp td{background:var(--surface-2);font-weight:600;font-size:12px}

.kv{display:flex;justify-content:space-between;gap:8px;font-size:13px}
.kv span:first-child{color:var(--muted)}
.err{color:var(--danger);font-size:13px;min-height:1.2em;margin:0;font-weight:500}
.err:not(:empty){
  background:var(--danger-soft);
  border:1px solid color-mix(in srgb,var(--danger) 30%,transparent);
  padding:8px 12px;
  border-radius:8px;
}

/* Quote Document */
.quote{max-width:820px;margin:0 auto;padding:32px;display:flex;flex-direction:column;gap:20px}
.q-head{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;border-bottom:2px solid var(--ink);padding-bottom:16px}
.q-head h2{font-family:var(--brand);font-size:24px}
.q-meta{font-size:13px;color:var(--muted);display:grid;grid-template-columns:auto auto;gap:4px 14px}
.q-meta b{color:var(--ink);font-weight:500}
.q-total td{font-weight:700;font-size:16px;border-top:2px solid var(--ink)}
.q-sub td{color:var(--muted)}
.q-foot{font-size:12px;color:var(--muted);display:flex;flex-direction:column;gap:4px}

/* 3D Viewer */
.viewer3d{
  height:min(70vh,640px);
  min-height:340px;
  border-radius:var(--r);
  box-shadow:var(--shadow-md);
  overflow:hidden;
  border:1px solid var(--line);
  background:var(--surface-2);
  position:relative;
}
.sel3d{display:flex;flex-wrap:wrap;align-items:center;gap:8px;padding:10px 14px;margin-bottom:8px;min-height:48px}
.sel3d b{font-weight:700}
.sel3d .grow{flex:1}
.viewer3d canvas{display:block;width:100%!important;height:100%!important}
.viewer3d .msg{position:absolute;inset:0;display:grid;place-items:center;color:var(--muted);padding:20px;text-align:center}

/* Toast */
.toast{
  position:fixed;
  bottom:calc(24px + env(safe-area-inset-bottom,0px));
  left:50%;
  transform:translateX(-50%) translateY(10px);
  background:var(--ink);
  color:var(--surface);
  padding:11px 20px;
  border-radius:12px;
  box-shadow:var(--shadow-xl);
  font-size:13.5px;
  font-weight:500;
  opacity:0;
  transition:all .2s cubic-bezier(0.16, 1, 0.3, 1);
  pointer-events:none;
  z-index:50;
  display:flex;
  align-items:center;
  gap:8px;
}
.toast.on{
  opacity:1;
  transform:translateX(-50%) translateY(0);
}

/* Platform-admin read-only preview banner */
.imp-bar{
  display:flex;
  gap:12px;
  align-items:center;
  justify-content:center;
  flex-wrap:wrap;
  padding:9px 16px;
  background:var(--amber-soft);
  color:var(--amber);
  border-bottom:1px solid color-mix(in srgb,var(--amber) 40%,transparent);
  font-size:13px;
  font-weight:500;
}
.imp-bar .btn{background:var(--surface);padding:5px 12px}

@media (max-width:760px){ .quote{padding:20px} }
@media (prefers-reduced-motion:reduce){ .toast{transition:none} }

@media print {
  :root{color-scheme:light;--bg:#fff;--surface:#fff;--surface-2:#F4F5F2;--ink:#111;--muted:#555;--line:#ccc;--accent:#2F55C8;--accent-soft:#E3E9FB;--u-base:#DCE3F7;--u-wall:#F3E4C4;--u-app:#E2E5E1}
  body{background:#fff}
  .top,.tabs-wrap,.no-print,.toast,.imp-bar,[data-print]{display:none!important}
  main{padding:0;max-width:none}
  .card{border:0;box-shadow:none}
  .quote,.rep{padding:0;max-width:none}
  table.t th,table.t td{padding:4px 6px}
  .tbl-wrap{overflow:visible}
  .sheets{grid-template-columns:repeat(2,1fr)}
  .sheet,.bar-row,tr{break-inside:avoid}
}