:root{--bg:#f2f2f2;--card:#2a282f;--text:#e7e9f1;--muted:#9aa3b2;--accent:#005cff}body,html{height:100%}.pdf-stamper-module-container{background:var(--bg);color:var(--text);margin:0}.wrap{margin:0 auto;max-width:1000px;padding:24px}.card{background:var(--card);border-radius:18px;box-shadow:0 8px 32px rgba(0,0,0,.35);padding:22px}h1{font-size:24px;margin:0 0 8px}h1,h2,h3,h4,h5,h6{color:#e7e9f1}p{color:var(--muted);margin-top:0}.grid{display:grid;gap:16px;grid-template-columns:1fr}@media (min-width:960px){.grid{grid-template-columns:1fr 1fr}}.field{display:flex;flex-direction:column;gap:6px}label{color:var(--muted);font-size:13px}input[type=file],input[type=number],input[type=range],select{background:#161616;border:1px solid #263255;border-radius:10px;color:var(--text);padding:10px}input[type=range]{padding:0}.row{align-items:center;display:flex;flex-wrap:wrap;gap:12px}.btn{background:var(--accent);border:none;border-radius:8px;color:#fff;cursor:pointer;font-size:18px;font-weight:600;padding:16px 32px}.btn[disabled]{cursor:not-allowed;opacity:.5}.footer,.hint{color:var(--muted);font-size:12px}.footer{margin-top:18px}.previewBox{align-items:center;background:#161616;border:1px dashed #2b3762;border-radius:12px;display:flex;justify-content:center;padding:12px}canvas{background:#fff;border-radius:8px;height:auto;max-width:100%}