/* Continuity — Product Image Generator */
:root{
  --indigo:#1e3a8a;
  --indigo-deep:#15296b;
  --coral:#ef4a3c;
  --ink:#0f172a;
  --paper:#f7f7f5;
  --line:#e6e8ef;
  --muted:#6b7280;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:'Inter',system-ui,-apple-system,sans-serif;color:var(--ink);background:var(--paper)}

.topbar{
  display:flex;align-items:center;justify-content:space-between;
  padding:18px 28px;background:var(--indigo);color:#fff;
}
.brand{display:flex;flex-direction:column;line-height:1}
.brand-name{font-weight:800;font-size:20px;letter-spacing:-.01em}
.brand-sub{font-size:10px;letter-spacing:.18em;opacity:.7;margin-top:4px}
.topbar-meta{font-size:13px;opacity:.85}

.shell{
  max-width:1240px;margin:32px auto;padding:0 24px;
  display:grid;grid-template-columns:minmax(360px,460px) 1fr;gap:32px;
}
@media (max-width:920px){.shell{grid-template-columns:1fr}}

.panel{
  background:#fff;border:1px solid var(--line);border-radius:14px;padding:28px;
}
.panel h1{font-size:24px;margin:0 0 6px;letter-spacing:-.01em;font-weight:800}
.lede{margin:0 0 22px;color:var(--muted);font-size:14px}

.field{display:flex;flex-direction:column;gap:6px;margin-bottom:14px;font-size:13px;font-weight:600}
.field em{font-style:normal;color:var(--muted);font-weight:500}
.field input,.field textarea,.field select{
  font:inherit;font-weight:500;padding:10px 12px;border:1px solid var(--line);
  border-radius:8px;background:#fff;color:var(--ink);outline:none;transition:border-color .15s, box-shadow .15s;
}
.field input:focus,.field textarea:focus,.field select:focus{
  border-color:var(--indigo);box-shadow:0 0 0 3px rgba(30,58,138,.12);
}
.field.checkbox{flex-direction:row;align-items:center;gap:10px;font-weight:500}
.field.checkbox input{width:16px;height:16px}

.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}

.actions{display:flex;gap:10px;margin-top:18px}
.btn-primary{
  background:var(--coral);color:#fff;border:0;padding:12px 18px;border-radius:8px;
  font:inherit;font-weight:700;cursor:pointer;transition:transform .05s, background .15s;
}
.btn-primary:hover{background:#d83a2d}
.btn-primary:active{transform:translateY(1px)}
.btn-ghost{
  background:transparent;color:var(--indigo);border:1px solid var(--indigo);
  padding:12px 18px;border-radius:8px;font:inherit;font-weight:600;cursor:pointer;
}
.btn-ghost:hover{background:rgba(30,58,138,.06)}

.preview-wrap{display:flex;flex-direction:column;align-items:center;gap:10px}
.preview-frame{
  width:100%;max-width:560px;aspect-ratio:1/1;
  background:#fff;border:1px solid var(--line);border-radius:14px;overflow:hidden;
  box-shadow:0 30px 60px -30px rgba(15,23,42,.25);
}
.preview-frame canvas{width:100%;height:100%;display:block}
.hint{color:var(--muted);font-size:12px;margin:6px 0 0}

.foot{text-align:center;color:var(--muted);font-size:12px;padding:24px}