.fsrs-sample-wrap{border:1px solid #ddd;border-radius:12px;padding:14px;max-width:520px;font-family:system-ui,-apple-system,Segoe UI,Roboto,Arial,sans-serif}
.fsrs-sample-header{display:flex;justify-content:space-between;align-items:flex-start;margin-bottom:12px}
.fsrs-meta{font-size:12px;opacity:.8;display:flex;gap:10px;flex-wrap:wrap;justify-content:flex-end}
.fsrs-card{border:1px solid #eee;border-radius:12px;padding:12px;margin-bottom:12px;min-height:90px}
.fsrs-q{font-size:18px;margin-bottom:8px}
.fsrs-a{font-size:16px;opacity:.9}
.fsrs-controls,.fsrs-actions{display:flex;gap:8px;flex-wrap:wrap}
.fsrs-btn{border:1px solid #ccc;background:#fff;border-radius:10px;padding:8px 12px;cursor:pointer}
.fsrs-btn:disabled{opacity:.5;cursor:not-allowed}


.fsrs-debug-wrap{margin-top:12px}
.fsrs-debug-title{margin:8px 0 6px 0}
.fsrs-debugout{background:#111;color:#7CFC90;border-radius:12px;padding:10px;min-height:90px;white-space:pre-wrap;overflow:auto}

.fsrs-mode-toggle .fsrs-btn.active{background:#111;color:#fff;border-color:#111}


/* --- Mode toggle (Regular / Practice) --- */

/* Mode toggle (Regular / Practice) */
.fsrs-mode-toggle{display:flex;gap:6px;margin-top:8px;flex-wrap:wrap}
.fsrs-mode-btn.active{background:#111;color:#fff;border-color:#111}