:root{
  --bg:#f6f7f9;--card:#fff;--border:#e5e7eb;--text:#111827;--muted:#6b7280;--accent:#111827
}
*{box-sizing:border-box}
html,body{height:100%}
body{margin:0;background:var(--bg);color:var(--text);font:16px/1.5 system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}
img{max-width:100%;height:auto;display:block}

/* Layout */
.container{max-width:1100px;margin:auto;padding:16px}
.card{background:var(--card);border:1px solid var(--border);border-radius:16px;box-shadow:0 1px 3px rgba(0,0,0,.06);padding:16px}
.header{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:8px}
.header h1{font-size:clamp(18px,2.4vw,24px);margin:0}
.subtle{color:var(--muted);font-size:clamp(12px,1.6vw,14px)}

.grid{display:grid;grid-template-columns:1fr 1fr;gap:16px}
@media (max-width:900px){.grid{grid-template-columns:1fr}}

.label{display:block;font-weight:600;margin:8px 0 6px}
.input, input[type=number]{width:100%;max-width:320px;padding:10px;border-radius:12px;border:1px solid var(--border);background:#fff}

/* Buttons */
button{appearance:none;background:var(--accent);color:#fff;border:none;border-radius:12px;padding:10px 16px;cursor:pointer;transition:transform .04s ease,opacity .2s}
button:hover{transform:translateY(-1px)}
button:active{transform:translateY(0)}
button:disabled{opacity:.55;cursor:not-allowed}
button.ghost{background:#fff;color:var(--text);border:1px solid var(--border)}
.pill{display:inline-block;border:1px solid var(--border);border-radius:999px;padding:8px 12px;background:#fff;text-decoration:none;color:var(--text)}
.small{font-size:.92rem}
.toolbar{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:8px}

/* Preview */
.preview{background:#fff;border:1px solid var(--border);border-radius:12px;display:inline-block;max-width:100%}
.preview img{border-radius:12px}

/* Modal editor */
.modal{position:fixed;inset:0;display:none;align-items:center;justify-content:center;background:rgba(0,0,0,.5);padding:16px;z-index:30}
.modal.active{display:flex}
.modal-card{background:#fff;border-radius:16px;width:min(920px,96vw);max-height:92vh;padding:12px;border:1px solid var(--border);box-shadow:0 10px 30px rgba(0,0,0,.2);display:flex;flex-direction:column}
.modal-head{display:flex;gap:10px;align-items:center;justify-content:space-between;margin-bottom:8px}
.canvas-wrap{position:relative;display:block;overflow:auto;border-radius:12px}
canvas{display:block;border-radius:12px;border:1px solid var(--border);max-width:100%;height:auto}
.helper{color:var(--muted);font-size:.9rem;margin-top:8px}

/* Form tweaks for mobile */
@media (max-width:520px){
  .toolbar{gap:8px}
  .pill.small{padding:6px 10px}
  input[type=number]{max-width:180px}
}

/* Focus visibility */
:focus-visible{outline:2px solid #3b82f6;outline-offset:2px;border-radius:10px}

/* Print template page (when opened) */
@page{size:A4;margin:0}
section.page{page-break-after:always;position:relative;width:210mm;height:297mm}
.svgwrap{position:absolute;left:0;top:0}