:root{
  --fg:#1f2937; --muted:#6b7280; --panel:#fff; --bg:#f3f4f6; --line:#e5e7eb;
  --brand:#2563eb; --com:#374151; --ideal:#10b981; --coronly:#a855f7; --both:#ef4444;
}
*{box-sizing:border-box}
html,body{margin:0;padding:0;background:var(--bg);color:var(--fg);
  font-family:system-ui,-apple-system,Segoe UI,Roboto,"Helvetica Neue",Arial,"Noto Sans JP","Hiragino Kaku Gothic ProN",Meiryo,sans-serif}
.container{max-width:1280px;margin:24px auto;padding:0 16px;}
h1{margin:0 0 8px;} h2{margin:24px 0 8px;} h3{margin:0 0 8px;}
.muted{color:var(--muted);margin:0 0 16px;}

.grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;align-items:start}
fieldset{background:var(--panel);border:1px solid var(--line);border-radius:12px;padding:12px}
legend{font-weight:600;color:#111}
label{display:flex;flex-direction:column;gap:4px;font-size:14px}
input,select{padding:8px;border:1px solid var(--line);border-radius:8px;background:#fff;color:var(--fg);font-size:14px}
.hint{font-size:12px;color:var(--muted)}
.actions{display:flex;gap:8px;align-items:center}
.actions button{padding:10px 14px;border:0;border-radius:10px;background:var(--brand);color:#fff;cursor:pointer}
.actions button:hover{opacity:.9}

.canvas-row{display:flex;gap:16px;align-items:flex-start;margin-top:16px;flex-wrap:wrap}
.canvas-panel{background:#fff;border:1px solid var(--line);border-radius:12px;padding:12px}
canvas{background:#fff;border:1px solid var(--line);border-radius:8px;display:block}
.legend{display:flex;flex-direction:column;gap:8px;margin-top:8px}

.chip{display:inline-block;width:14px;height:14px;border-radius:3px;margin-right:6px;vertical-align:middle}
.chip-com{background:var(--com)}
.chip-ideal{background:var(--ideal)}
.chip-coronly{background:var(--coronly)}
.chip-both{background:var(--both)}

/* Theory table */
.table-wrap{overflow-x:auto}
#theoryTable th,#theoryTable td{white-space:nowrap}
.theory-section h2{margin:16px 0 8px}


.notes{margin-top:12px;color:var(--muted)}

table{width:100%;border-collapse:collapse;background:#fff;border:1px solid var(--line);border-radius:12px;overflow:hidden;margin-top:16px}
th,td{border-bottom:1px solid var(--line);padding:8px;text-align:left;font-variant-numeric:tabular-nums}
thead th{background:#fafafa}
tbody tr:last-child td{border-bottom:none}