:root{
  --navy:#1c2649; --red:#cf111b; --gold:#c9a250;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:"Tajawal","Cairo","Segoe UI",sans-serif;background:#eef2f8;color:#0f172a}
body{display:flex;min-height:100vh}

.lt-panel{
  width:380px;flex-shrink:0;background:#fff;border-left:1px solid #e2e8f0;
  padding:20px 18px;overflow:auto;height:100vh;position:sticky;top:0;
  box-shadow:0 0 18px rgba(0,0,0,.05)
}
.lt-brand{display:flex;gap:12px;align-items:center;margin-bottom:14px}
.lt-brand img{width:48px;height:48px;border-radius:50%;border:2px solid var(--gold);object-fit:cover;background:#fff}
.lt-brand h1{margin:0;font-size:18px;color:var(--navy);font-weight:900}
.lt-brand p{margin:2px 0 0;font-size:12px;color:var(--red);font-weight:700}

.lt-actions{display:grid;gap:8px;grid-template-columns:1fr 1fr;margin-bottom:14px}
.lt-actions .lt-back{grid-column:1/-1}
.lt-actions button,.lt-actions a{
  padding:11px 12px;border-radius:10px;border:0;cursor:pointer;
  font-weight:800;font-size:13.5px;text-align:center;text-decoration:none;
  transition:transform .12s,box-shadow .12s
}
.lt-back{background:linear-gradient(180deg,var(--gold),#9c7a30);color:var(--navy)!important}
.lt-primary{background:linear-gradient(180deg,#d80007,#9a0006);color:#fff;box-shadow:0 6px 14px rgba(207,17,27,.3)}
.lt-ghost{background:#f1f5f9;color:var(--navy);border:1px solid #cbd5e1!important}
.lt-actions button:hover,.lt-actions a:hover{transform:translateY(-1px)}

.lt-fields{display:grid;gap:10px;margin-bottom:14px}
.lt-fields label{display:grid;gap:4px;font-size:12px;font-weight:700;color:#475569}
.lt-fields input,.lt-fields textarea,.lt-fields select{
  padding:9px 10px;border-radius:9px;border:1px solid #cbd5e1;background:#f8fafc;
  font:inherit;color:#0f172a
}
.lt-fields input:focus,.lt-fields textarea:focus,.lt-fields select:focus{
  outline:none;border-color:var(--red);box-shadow:0 0 0 3px rgba(207,17,27,.12);background:#fff
}
.lt-fields textarea{resize:vertical;min-height:140px;line-height:1.7}
.lt-hint{font-size:11.5px;color:#64748b;margin:6px 0 0;line-height:1.6;background:#fef3c7;padding:8px 10px;border-radius:8px;border:1px solid #fde68a}

.lt-bg-section{background:#f8fafc;padding:10px;border-radius:10px;border:1px solid #e2e8f0;margin-bottom:14px}
.lt-bg-title{font-size:13px;font-weight:800;color:var(--navy);margin-bottom:8px}
.lt-bg-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:6px;margin-bottom:8px}
.lt-bg-thumb{aspect-ratio:210/297;border:2px solid #cbd5e1;border-radius:6px;cursor:pointer;background:#fff center/cover no-repeat;position:relative;transition:transform .12s,border-color .12s;overflow:hidden}
.lt-bg-thumb:hover{transform:scale(1.05);border-color:var(--gold)}
.lt-bg-thumb.active{border-color:var(--red);box-shadow:0 0 0 2px rgba(207,17,27,.15)}
.lt-bg-thumb.none{background:#fff;display:grid;place-items:center;color:#94a3b8;font-size:11px;font-weight:800}
.lt-bg-upload{display:block;text-align:center;padding:9px;background:#fff;border:1.5px dashed var(--gold);color:var(--navy);border-radius:8px;cursor:pointer;font-weight:800;font-size:13px}
.lt-bg-upload:hover{background:var(--gold);color:var(--navy)}
.lt-colors{display:grid;gap:8px;grid-template-columns:1fr 1fr;margin-bottom:14px;background:#f8fafc;padding:10px;border-radius:10px;border:1px solid #e2e8f0}
.lt-colors label{font-size:12px;font-weight:700;color:#475569;display:flex;justify-content:space-between;align-items:center;gap:6px}
.lt-colors input[type=color]{width:42px;height:30px;padding:0;border:1px solid #cbd5e1;border-radius:6px;background:#fff;cursor:pointer}
.lt-colors select{padding:5px 8px;border-radius:7px;border:1px solid #cbd5e1;background:#fff;font:inherit}

.lt-preview{flex:1;padding:30px 20px;display:flex;justify-content:center;align-items:flex-start;overflow:auto}

/* A4 letter page — fixed 210×297mm */
.letter-page{
  width:210mm;height:297mm;background:#fff;position:relative;
  background-image:url('assets/page-bg-official.png');
  background-size:210mm 297mm;background-position:0 0;background-repeat:no-repeat;
  padding:4mm 20mm 28mm;
  box-shadow:0 14px 40px rgba(0,0,0,.15);
  font-size:14px;line-height:1.75;color:#1f2937;
  display:flex;flex-direction:column;gap:4mm;overflow:hidden
}

.lh{display:flex;justify-content:flex-end;align-items:flex-start;gap:14px;margin-bottom:2mm}
.lh-logo-block{text-align:center;color:var(--navy);font-weight:900;display:flex;flex-direction:column;align-items:center;gap:1mm;margin-top:-2mm}
.lh-logo{width:34mm;height:auto;max-height:22mm;object-fit:contain;display:block;margin:0}
.lh-name-ar{font-size:14px;color:var(--navy);font-weight:900}
.lh-name-en{font-size:10px;color:#475569;direction:ltr;letter-spacing:1px}
.lh-meta{display:flex;gap:14px;font-size:13.5px;align-items:center;flex-shrink:0}
.lh-row{display:inline-flex;gap:6px;color:var(--navy);align-items:center}
.lh-row span{color:#64748b;font-weight:700}
.lh-row b{color:var(--navy);font-weight:800}
.lh-band{
  margin:2mm auto 4mm;width:88%;padding:5mm 6mm;border-radius:14px;
  background:linear-gradient(160deg,#1f2a52 0%,#131c3d 100%);
  color:#fff;text-align:center;font-size:22px;font-weight:900;letter-spacing:1px;
  box-shadow:0 8px 20px rgba(15,23,42,.22);border-top:2px solid var(--gold);
  position:relative
}
.lh-band::after{content:"";display:block;width:36mm;height:2px;margin:3mm auto 0;background:linear-gradient(90deg,transparent,var(--gold),transparent)}

.lb-to{font-size:16px;font-weight:800;color:var(--navy);display:flex;justify-content:space-between;align-items:center;gap:14px}
.lb-to .lb-to-main{flex:1}
.lb-to .lb-to-main > span{color:#475569;font-weight:700;margin-left:6px}
.lb-to .lb-to-main > b{white-space:pre-wrap}
#vTo{padding-inline-end:18mm}

.lb-subject{
  text-align:center;font-size:17px;font-weight:900;color:var(--red);
  margin:2mm 0;padding:3mm 6mm;border:1.8px solid var(--red);border-radius:12px;
  background:rgba(255,255,255,.7)
}

.lb-greet{font-weight:800;color:var(--navy);margin:2mm 0 4mm}

.lb-body{
  flex:1;text-align:justify;white-space:pre-wrap;line-height:1.95;
  background:rgba(255,255,255,.55);padding:4mm 5mm;border-radius:12px;
  overflow:hidden
}
.lb-body[contenteditable=true]:focus{outline:2px dashed var(--gold);outline-offset:2px;background:rgba(255,255,255,.8)}

.lb-sign{margin-top:8mm;display:flex;justify-content:flex-end}
.lb-sign-block{
  width:75mm;text-align:center;background:rgba(255,255,255,.7);
  border:1.5px solid var(--gold);border-radius:12px;padding:5mm 4mm
}
.lb-sign-role{font-weight:800;color:var(--red);font-size:14px}
.lb-sign-name{font-weight:900;color:var(--navy);margin-top:2mm;font-size:15px}
.lb-sign-line{margin-top:7mm;padding-top:3mm;border-top:1.5px dashed #94a3b8;color:#64748b;font-size:12px;font-weight:700}

[contenteditable=true]:focus{outline:2px dashed var(--gold);outline-offset:2px}

@media (max-width: 1100px){
  body{flex-direction:column}
  .lt-panel{width:100%;height:auto;position:static}
}

@media print{
  body{background:#fff;display:block}
  .lt-panel{display:none!important}
  .lt-preview{padding:0;display:block}
  .letter-page{box-shadow:none;margin:0;width:210mm;height:297mm;page-break-after:avoid}
  @page{size:A4 portrait;margin:0}
}