:root { --bg:#3c5757; --card:#8ea494; --text:#fff; --muted:#fff; --accent:#4a67ff; --border:#243062; }
*{box-sizing:border-box}
body{margin:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text)}
.wrapper{max-width:760px;margin:0 auto;padding:20px}
.card{background:var(--card);border:1px solid var(--border);border-radius:12px;padding:16px}
h1{font-size:20px;margin:0 0 12px}
.field{margin:12px 0}
label{display:block;font-size:14px;color:var(--muted);margin-bottom:6px}
input[type="text"],input[type="email"],input[type="date"]{width:100%;padding:10px;border-radius:8px;border:1px solid var(--border);background:#1a331a;color:var(--text)}
.checkbox{display:flex;align-items:center;gap:8px}
.canvas-wrap{border:1px dashed var(--border);border-radius:8px;background:#0e1430;height:120px;display:flex;align-items:center;justify-content:center;position:relative}
.canvas-wrap canvas{width:100%;height:100%;border-radius:8px}
.row{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.button{padding:10px 14px;background:var(--accent);border:none;border-radius:8px;color:white;cursor:pointer}
.button:disabled{opacity:.6;cursor:not-allowed}
.helper{font-size:12px;color:var(--muted)}
hr{border:0;border-top:1px solid var(--border);margin:16px 0}
.success{background:#0c2a18;border:1px solid #1f6a3c;color:#d8ffe6;padding:10px;border-radius:8px;margin-top:8px}
.error{background:#2a0c10;border:1px solid #6a1f2d;color:#ffd8de;padding:10px;border-radius:8px;margin-top:8px}