:root{
  --ink:#15233B;          /* deep navy */
  --ink-soft:#33415C;
  --teal:#2B6E73;         /* restrained maritime accent */
  --teal-deep:#1F5256;
  --paper:#FBFAF7;
  --card:#FFFFFF;
  --line:#E4E1D9;
  --line-strong:#CBC8BF;
  --text:#23262B;
  --muted:#6B6F76;
  --warn-bg:#FBEFD9;
  --warn-line:#E2B257;
  --warn-text:#8A5A12;
  --radius:10px;
  --maxw:920px;
  --ui:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif;
  --serif:Georgia,"Times New Roman",serif;
}

*{box-sizing:border-box}
html,body{margin:0}
body{
  font-family:var(--ui);
  color:var(--text);
  background:var(--paper);
  line-height:1.5;
  -webkit-font-smoothing:antialiased;
}

/* ---------- top bar ---------- */
.topbar{
  display:flex;align-items:center;justify-content:space-between;gap:24px;
  padding:18px 24px;border-bottom:1px solid var(--line);
  background:var(--card);position:sticky;top:0;z-index:10;flex-wrap:wrap;
}
.brand{display:flex;align-items:center;gap:14px}
.mark{
  width:34px;height:34px;border-radius:8px;flex:none;
  background:
    linear-gradient(135deg,var(--ink) 0%,var(--teal-deep) 100%);
  position:relative;
}
.mark::after{
  content:"";position:absolute;inset:0;margin:auto;width:14px;height:14px;
  border:2px solid #fff;border-radius:50%;
  border-top-color:transparent;border-right-color:transparent;
  transform:rotate(45deg);
}
.topbar h1{font-size:1.05rem;margin:0;color:var(--ink);letter-spacing:-0.01em}
.sub{margin:0;font-size:.78rem;color:var(--muted)}

.steps{display:flex;gap:6px;list-style:none;margin:0;padding:0;counter-reset:s}
.steps li{
  counter-increment:s;font-size:.8rem;color:var(--muted);
  padding:6px 12px 6px 30px;position:relative;border-radius:99px;white-space:nowrap;
}
.steps li::before{
  content:counter(s);position:absolute;left:8px;top:50%;transform:translateY(-50%);
  width:18px;height:18px;border-radius:50%;background:var(--line);color:#fff;
  font-size:.7rem;display:grid;place-items:center;font-weight:600;
}
.steps li.active{color:var(--ink);font-weight:600;background:#EEF4F4}
.steps li.active::before{background:var(--teal)}
.steps li.done::before{background:var(--ink)}

/* ---------- layout ---------- */
.layout{max-width:var(--maxw);margin:0 auto;padding:28px 20px 60px}
.panel{animation:rise .25s ease}
.hidden{display:none}
@keyframes rise{from{opacity:0;transform:translateY(6px)}to{opacity:1;transform:none}}

/* ---------- dropzone ---------- */
.dropzone{
  border:1.5px dashed var(--line-strong);border-radius:var(--radius);
  background:var(--card);padding:48px 24px;text-align:center;cursor:pointer;
  transition:border-color .15s,background .15s;
}
.dropzone:hover,.dropzone:focus-visible{border-color:var(--teal);background:#FAFCFC;outline:none}
.dropzone.drag{border-color:var(--teal);background:#F1F7F7}
.dz-icon{
  width:40px;height:48px;margin:0 auto 14px;border:2px solid var(--ink);border-radius:4px;
  position:relative;background:#fff;
}
.dz-icon::before{content:"";position:absolute;top:8px;left:8px;right:8px;height:2px;background:var(--line-strong);
  box-shadow:0 7px 0 var(--line-strong),0 14px 0 var(--line-strong)}
.dz-icon::after{content:"";position:absolute;top:-2px;right:-2px;border:9px solid transparent;
  border-top-color:var(--teal);border-right-color:var(--teal)}
.dz-title{margin:0;font-weight:600;color:var(--ink)}
.dz-hint{margin:4px 0 0;font-size:.85rem;color:var(--muted)}

.status{min-height:1.2em;margin:14px 2px 0;font-size:.88rem;color:var(--ink-soft)}
.status.err{color:#A23A2E}

.manual{margin-top:20px;border-top:1px solid var(--line);padding-top:16px}
.manual summary{cursor:pointer;font-size:.85rem;color:var(--muted)}
.manual textarea{
  width:100%;margin-top:12px;padding:12px;border:1px solid var(--line-strong);
  border-radius:8px;font-family:var(--ui);font-size:.9rem;resize:vertical;
}

/* ---------- review form ---------- */
.review-head h2,.gen-head h2{color:var(--ink);margin:0 0 4px;letter-spacing:-0.01em}
.muted{color:var(--muted);font-size:.88rem;margin:0 0 18px}
.needs-pill{
  background:var(--warn-bg);color:var(--warn-text);border:1px solid var(--warn-line);
  border-radius:99px;font-size:.72rem;padding:1px 8px;font-weight:600;
}

.group{
  background:var(--card);border:1px solid var(--line);border-radius:var(--radius);
  padding:18px 18px 6px;margin-bottom:16px;
}
.group > h3{
  margin:0 0 14px;font-size:.78rem;text-transform:uppercase;letter-spacing:.08em;
  color:var(--teal-deep);font-weight:700;
}
.field{margin-bottom:14px}
.field label{display:block;font-size:.82rem;font-weight:600;color:var(--ink-soft);margin-bottom:5px}
.field input[type=text],
.field input[type=number],
.field textarea{
  width:100%;padding:9px 11px;border:1px solid var(--line-strong);border-radius:8px;
  font-family:var(--ui);font-size:.92rem;color:var(--text);background:#fff;
}
.field textarea{resize:vertical;line-height:1.45}
.field input:focus,.field textarea:focus{outline:2px solid var(--teal);outline-offset:0;border-color:var(--teal)}
.field.needs input,.field.needs textarea{background:var(--warn-bg);border-color:var(--warn-line)}
.field.needs label::after{content:"Needs input";margin-left:8px;
  background:var(--warn-bg);color:var(--warn-text);border:1px solid var(--warn-line);
  border-radius:99px;font-size:.66rem;padding:0 7px;font-weight:600;text-transform:none;letter-spacing:0}

.grid2{display:grid;grid-template-columns:1fr 1fr;gap:0 16px}
@media(max-width:560px){.grid2{grid-template-columns:1fr}}

.choice{display:flex;gap:8px;flex-wrap:wrap}
.choice button{
  border:1px solid var(--line-strong);background:#fff;border-radius:99px;
  padding:6px 16px;font-size:.85rem;cursor:pointer;color:var(--ink-soft);font-family:var(--ui);
}
.choice button[aria-pressed=true]{background:var(--ink);border-color:var(--ink);color:#fff}
.field.needs .choice button{border-color:var(--warn-line)}

/* ---------- buttons ---------- */
.btn{
  border:1px solid var(--line-strong);background:#fff;color:var(--ink);
  padding:9px 18px;border-radius:8px;font-size:.9rem;font-weight:600;cursor:pointer;
  font-family:var(--ui);transition:background .12s,border-color .12s,transform .05s;
}
.btn:hover{background:#F4F6F6}
.btn:active{transform:translateY(1px)}
.btn.primary{background:var(--teal);border-color:var(--teal);color:#fff}
.btn.primary:hover{background:var(--teal-deep)}
.btn.ghost{background:transparent}
.row-actions,.gen-actions{display:flex;gap:10px;justify-content:flex-end;margin-top:8px;flex-wrap:wrap}
.gen-head{display:flex;justify-content:space-between;align-items:flex-end;gap:16px;margin-bottom:18px;flex-wrap:wrap}

/* ---------- letter preview ---------- */
.preview-wrap{background:#EDEBE5;border-radius:var(--radius);padding:24px;overflow:auto}
.letter{
  background:#fff;max-width:760px;margin:0 auto;padding:40px 56px 28px;
  font-family:var(--serif);color:#1c1c1c;font-size:14.5px;line-height:1.6;
  box-shadow:0 6px 28px rgba(20,35,59,.12);
}
.letter .band{display:block;width:100%;height:auto}
.letter .band-top{margin-bottom:6px}
.letter .band-bottom{margin-top:30px}
.letter .signame{font-weight:700;color:var(--ink);font-family:var(--ui);margin:10px 0 0}
.letter .lh{display:flex;justify-content:space-between;align-items:flex-start;border-bottom:2px solid var(--ink);padding-bottom:14px;margin-bottom:8px}
.letter .lh .issuer{font-family:var(--ui)}
.letter .lh .issuer .name{font-weight:700;color:var(--ink);font-size:15px}
.letter .lh .issuer .meta{font-size:11px;color:#555;line-height:1.45}
.letter .date{text-align:right;font-size:13px;color:#333}
.letter h2.title{font-family:var(--ui);font-size:15px;letter-spacing:.04em;text-align:center;margin:26px 0 22px;color:var(--ink);text-transform:uppercase}
.letter p{margin:0 0 12px}
.letter .re{font-weight:700}
.letter table.kv{width:100%;border-collapse:collapse;margin:6px 0 18px}
.letter table.kv td{padding:5px 0;vertical-align:top;font-size:13.5px}
.letter table.kv td.k{width:42%;color:#444;font-family:var(--ui);font-size:12.5px;padding-right:14px}
.letter table.kv tr.gap td{padding-top:18px}
.letter table.kv td.v{font-weight:600}
.letter .section-h{font-family:var(--ui);font-size:12px;text-transform:uppercase;letter-spacing:.06em;color:var(--teal-deep);font-weight:700;margin:20px 0 8px;border-bottom:1px solid var(--line);padding-bottom:4px}
.letter .sign{margin-top:34px}
.letter .sign .role{font-weight:700;color:var(--ink);font-family:var(--ui)}
.letter .lfoot{margin-top:30px;border-top:1px solid var(--line);padding-top:10px;font-family:var(--ui);font-size:10.5px;color:#666;line-height:1.5}
.letter .small{font-size:12px;color:#555;font-style:italic}

.footnote{max-width:var(--maxw);margin:0 auto;padding:0 20px 40px;font-size:.8rem;color:var(--muted)}

/* ---------- print: only the letter ---------- */
@media print{
  .topbar,.footnote,.gen-head,.steps,.row-actions,#step1,#step2{display:none !important}
  body{background:#fff}
  .layout{padding:0;max-width:none}
  .preview-wrap{background:#fff;padding:0}
  .letter{box-shadow:none;max-width:none;margin:0;padding:0 14mm}
  @page{size:A4;margin:16mm}
}