:root{
  --paper:#F7F3EA;
  --paper-raised:#FFFFFF;
  --ink:#211D1A;
  --ink-soft:#5B5449;
  --accent:#8A2C2C;
  --accent-soft:#B5551F;
  --line:#DCD3BE;
  --line-strong:#C6B99C;
  --focus:#2C5F6F;
  --ok:#2F6F4F;
  --radius:3px;
  --serif:'Source Serif 4', Georgia, serif;
  --sans:'IBM Plex Sans', -apple-system, Segoe UI, sans-serif;
  --mono:'IBM Plex Mono', 'Courier New', monospace;
}

*{box-sizing:border-box;}
html,body{margin:0;padding:0;}
body{
  background:var(--paper);
  color:var(--ink);
  font-family:var(--sans);
  -webkit-font-smoothing:antialiased;
}

.wrap{max-width:1400px;margin:0 auto;padding:0 28px 40px;}

/* ---------- Topbar ---------- */
.topbar{
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:24px;
  padding:26px 0 20px;
  border-bottom:1px solid var(--line-strong);
  flex-wrap:wrap;
}
.topbar-mark{display:flex;align-items:center;gap:14px;}
.seal{color:var(--accent);display:inline-flex;flex:none;}
.topbar-title h1{
  font-family:var(--serif);
  font-size:26px;
  font-weight:600;
  margin:0;
  letter-spacing:.2px;
}
.topbar-title p{
  margin:2px 0 0;
  font-size:13px;
  color:var(--ink-soft);
}
.topbar-actions{display:flex;align-items:center;gap:12px;}
.progress-label{font-size:12px;color:var(--ink-soft);font-family:var(--mono);white-space:nowrap;}
.progress-track{
  width:140px;height:6px;border-radius:99px;
  background:var(--line);overflow:hidden;
}
.progress-fill{
  height:100%;width:0%;
  background:var(--accent-soft);
  transition:width .25s ease;
}

/* ---------- Layout ---------- */
.layout{
  display:grid;
  grid-template-columns:minmax(0,1fr) minmax(0,1fr);
  gap:24px;
  margin-top:24px;
  align-items:start;
}
@media (max-width:980px){
  .layout{grid-template-columns:1fr;}
}

.panel{
  background:var(--paper-raised);
  border:1px solid var(--line);
  border-radius:var(--radius);
}

/* ---------- Form ---------- */
.form-panel{padding:8px 22px 22px;max-height:calc(100vh - 160px);overflow-y:auto;position:sticky;top:16px;}
@media (max-width:980px){.form-panel{position:static;max-height:none;}}

.section{
  border:none;
  border-top:1px solid var(--line);
  margin:0;
  padding:20px 0;
}
.section:first-of-type{border-top:none;}
.section legend{
  display:flex;align-items:center;gap:10px;
  font-family:var(--serif);
  font-size:16px;
  font-weight:600;
  color:var(--ink);
  padding:0;
  margin-bottom:14px;
}
.section .num{
  display:inline-flex;align-items:center;justify-content:center;
  width:22px;height:22px;border-radius:50%;
  background:var(--accent);color:#fff;
  font-family:var(--mono);font-size:11px;font-weight:500;
  flex:none;
}

.grid{
  display:grid;
  grid-template-columns:1fr 1fr;
  gap:14px 16px;
}
.field{
  display:flex;flex-direction:column;gap:6px;
  font-size:12.5px;
  color:var(--ink-soft);
  font-weight:500;
}
.field.span-2{grid-column:1 / -1;}
.optional{font-weight:400;font-style:italic;color:var(--line-strong);}

input,select,textarea{
  font-family:var(--sans);
  font-size:14px;
  color:var(--ink);
  background:var(--paper);
  border:1px solid var(--line-strong);
  border-radius:var(--radius);
  padding:9px 10px;
  outline:none;
  transition:border-color .15s ease, box-shadow .15s ease;
}
input.mono, .combo input.mono{font-family:var(--mono);}
textarea{resize:vertical;font-family:var(--sans);}
input:focus,select:focus,textarea:focus{
  border-color:var(--focus);
  box-shadow:0 0 0 3px rgba(44,95,111,.15);
}
input:invalid:not(:placeholder-shown){border-color:var(--accent);}
.combo{display:flex;gap:6px;}
.combo select{flex:none;width:78px;}
.combo input{flex:1;min-width:0;}

.formfoot{
  display:flex;gap:10px;padding-top:16px;border-top:1px solid var(--line);
}

.btn{
  font-family:var(--sans);
  font-size:13px;
  font-weight:600;
  border-radius:var(--radius);
  padding:10px 16px;
  cursor:pointer;
  border:1px solid transparent;
  transition:transform .1s ease, opacity .15s ease, background .15s ease;
}
.btn:active{transform:translateY(1px);}
.btn.primary{
  background:var(--accent);
  color:#fff;
  border-color:var(--accent);
}
.btn.primary:hover{background:var(--accent-soft);border-color:var(--accent-soft);}
.btn.primary:disabled{opacity:.45;cursor:not-allowed;}
.btn.ghost{
  background:transparent;
  color:var(--ink-soft);
  border-color:var(--line-strong);
}
.btn.ghost:hover{color:var(--ink);border-color:var(--ink-soft);}

/* ---------- Preview ---------- */
.preview-panel{
  display:flex;flex-direction:column;
  min-height:600px;
}
.preview-toolbar{
  display:flex;align-items:center;justify-content:space-between;
  padding:14px 20px;border-bottom:1px solid var(--line);
  gap:12px;flex-wrap:wrap;
}
.preview-toolbar-title{
  font-family:var(--mono);font-size:11px;letter-spacing:.08em;
  text-transform:uppercase;color:var(--ink-soft);
}
.preview-toolbar-actions{display:flex;gap:10px;}
.preview-status{
  font-size:12px;color:var(--accent);
  padding:0 20px;
  min-height:0;
}
.preview-status.visible{padding:10px 20px;border-bottom:1px solid var(--line);}

.preview-scroll{
  padding:24px;
  overflow-y:auto;
  max-height:calc(100vh - 220px);
  background:repeating-linear-gradient(180deg,#EFEAE0,#EFEAE0 1px,transparent 1px,transparent 100%);
}

.page{
  background:#fff;
  max-width:680px;
  margin:0 auto 24px;
  padding:56px 60px;
  font-family:'Times New Roman', Georgia, serif;
  font-size:14.5px;
  line-height:1.65;
  color:#1a1a1a;
  box-shadow:0 1px 3px rgba(0,0,0,.08), 0 8px 24px rgba(0,0,0,.06);
  min-height:400px;
}

.letterhead-space{
  height:110px;
  margin-bottom:8px;
  border:1px dashed var(--line-strong);
  border-radius:2px;
  display:flex;align-items:center;justify-content:center;
  position:relative;
}
.letterhead-space::after{
  content:attr(data-label);
  font-family:var(--sans);
  font-size:10.5px;
  color:var(--line-strong);
  text-align:center;
  padding:0 20px;
  max-width:340px;
}

.doc-title{
  text-align:center;font-weight:700;text-decoration:underline;
  font-size:24px;margin:18px 0 24px;
}
.doc-heading{
  text-decoration:underline;font-size:16px;margin:20px 0 8px;
}
.doc-heading.center{text-align:center;font-weight:700;font-size:15px;}
.doc-para{margin:0 0 10px;text-align:justify;}
.doc-para.indent{margin-left:22px;}
.doc-list-item{display:flex;gap:8px;margin:0 0 10px;text-align:justify;}
.doc-list-item .marker{flex:none;font-variant-numeric:normal;}
.doc-list-item .body{flex:1;}
.doc-blank{height:14px;}
.doc-signrow{display:flex;justify-content:space-between;font-weight:700;margin-top:36px;}
.placeholder-fill{
  background:#FBEEDC;
  border-bottom:1px solid var(--accent-soft);
  padding:0 2px;
  color:#7a4a12;
}
.placeholder-empty{
  background:transparent;
  border-bottom:1px solid var(--accent);
  color:var(--accent);
}

.foot{
  margin-top:28px;padding-top:16px;border-top:1px solid var(--line);
  font-size:12px;color:var(--ink-soft);
}
.foot p{margin:0;max-width:900px;}

@media (max-width:640px){
  .wrap{padding:0 14px 30px;}
  .grid{grid-template-columns:1fr;}
  .page{padding:34px 22px;font-size:13.5px;}
}