:root{
  --green:#52b788;
  --green-dark:#2d6a4f;
  --bg:#f6f9f7;
  --ink:#12302a;
  --accent:#ffd166;
  --danger:#ef476f;
  --info:#118ab2;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif;background:var(--bg);color:var(--ink)}
header,footer{display:flex;align-items:center;justify-content:center;gap:16px;padding:10px 16px;background:white;border-bottom:1px solid #e8efe9}
header .wrap{display:flex;align-items:center;gap:12px;max-width:1200px;width:100%}
header img.logo{height:48px;width:auto;display:block}
header h1{flex:1;text-align:center;margin:0;font-weight:800;color:var(--green-dark)}
header nav{display:flex;gap:8px}
header nav a{padding:8px 12px;border-radius:999px;border:1px solid #cfe9db;background:#fff;text-decoration:none;color:var(--green-dark);font-weight:600}
header nav a.active{background:var(--green);color:white;border-color:var(--green)}
main{max-width:1200px;margin:0 auto;padding:16px}
.section{background:white;border:1px solid #e2efe7;border-radius:16px;padding:16px;margin-bottom:16px;box-shadow:0 1px 3px rgba(0,0,0,.06)}
label{font-weight:700;margin-right:8px}
input[type=number]{padding:8px;border-radius:10px;border:1px solid #cde6d7;width:100px}
select,button{padding:10px 14px;border-radius:12px;border:1px solid #cde6d7;background:#fff;cursor:pointer}
button.primary{background:var(--green);color:white;border-color:var(--green-dark);font-weight:800}
button.ghost{background:white}
.controls{display:flex;flex-wrap:wrap;gap:12px;align-items:center}
.grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px;margin-top:12px}
.circle{width:220px;height:220px;border-radius:50%;border:4px dashed #a8d5c2;display:flex;align-items:center;justify-content:center;position:relative;background:#f8fffb;transition:box-shadow .2s}
.circle.ok{box-shadow:0 0 0 4px rgba(82,183,136,.25)}
.circle.bad{box-shadow:0 0 0 4px rgba(239,71,111,.15)}
.circle .title{position:absolute;top:-14px;left:50%;transform:translateX(-50%);background:white;padding:2px 10px;border-radius:999px;border:1px solid #cfe9db;font-size:12px;color:var(--green-dark);font-weight:800}
.token-bin{min-height:120px;display:flex;flex-wrap:wrap;gap:8px;padding:10px;border-radius:14px;border:2px dashed #d0e7dd;background:#f6fbf8}
.token{width:34px;height:34px;border-radius:50%;display:flex;align-items:center;justify-content:center;font-weight:800;color:#12302a;user-select:none;touch-action:none;border:2px solid rgba(0,0,0,.08)}
.token[data-color="1"]{background:#ffd6a5}
.token[data-color="2"]{background:#fdffb6}
.token[data-color="3"]{background:#caffbf}
.token[data-color="4"]{background:#9bf6ff}
.token[data-color="5"]{background:#bdb2ff}
.token[data-color="6"]{background:#ffc6ff}
.token.dragging{opacity:.7;transform:scale(1.06)}
.dropzone{outline:3px dashed transparent;transition:outline-color .15s}
.dropzone.over{outline-color:var(--accent)}
.result{font-size:22px;font-weight:800;padding:8px 12px;border-radius:10px;background:#f1fff7;border:1px solid #ccebd8;color:var(--green-dark);display:inline-flex;align-items:center;gap:10px}
.result.bad{background:#fff4f6;border-color:#ffd2dc;color:#93243d}
.toolbar{display:flex;gap:10px;flex-wrap:wrap;align-items:center}
footer{border-top:1px solid #e8efe9;border-bottom:none;justify-content:center;background:white}
footer small{color:#5e7a71}
.print-only{display:none}
@media print{
  header, .no-print, footer{display:none !important}
  .print-only{display:block}
  body{background:white}
}
.modal{position:fixed;inset:0;background:rgba(0,0,0,.4);display:none;align-items:center;justify-content:center;padding:20px;z-index:999}
.modal .card{background:white;border-radius:18px;padding:20px;max-width:520px;width:100%;border:1px solid #e6efe8;box-shadow:0 8px 30px rgba(0,0,0,.18)}
.modal.show{display:flex}
.certificate{border:6px double var(--green-dark);border-radius:18px;padding:20px;text-align:center}
.certificate h2{margin:0 0 8px}
.certificate .stamp{margin-top:16px;font-weight:900;color:var(--green-dark)}
.helper{font-size:14px;color:#3a5c52}
.badge{position:absolute;bottom:-12px;left:50%;transform:translateX(-50%);background:white;border:1px solid #dfeee6;border-radius:999px;padding:2px 8px;font-size:12px;font-weight:800;color:#356a57}
.badge.bad{color:#8a2840;border-color:#ffd2dc;background:#fff4f6}
.toast{position:fixed;left:50%;bottom:24px;transform:translateX(-50%);background:#12302a;color:white;padding:10px 14px;border-radius:12px;opacity:0;pointer-events:none;transition:opacity .2s, transform .2s}
.toast.show{opacity:1;transform:translateX(-50%) translateY(-6px)}
.counter{font-weight:700;color:#356a57}