.history-container{max-width:600px;padding:1rem}.history-container h2{margin-bottom:1rem}.history-empty{color:#666;font-style:italic}.email-report-form{gap:.5rem;margin-bottom:1rem;display:flex}.email-input{border:1px solid #d1d5db;border-radius:6px;flex:1;padding:.5rem .75rem;font-family:inherit;font-size:.875rem}.email-send-btn{color:#fff;cursor:pointer;white-space:nowrap;background:#2563eb;border:none;border-radius:6px;padding:.5rem 1rem;font-family:inherit;font-size:.875rem}.email-send-btn:hover:not(:disabled){background:#1d4ed8}.email-send-btn:disabled{cursor:default;background:#93c5fd}.history-list{flex-direction:column;gap:.5rem;margin:0;padding:0;list-style:none;display:flex}.history-item{border-radius:6px;overflow:hidden}.history-card{cursor:pointer;text-align:left;width:100%;font-family:inherit;font-size:inherit;background:#fff;border:1px solid #d1d5db;border-radius:6px;flex-direction:column;align-items:flex-start;padding:.75rem 1rem;transition:background .15s;display:flex}.history-card:hover{background:#f3f4f6}.history-card.expanded{background:#f3f4f6;border-bottom-right-radius:0;border-bottom-left-radius:0}.history-card-title{align-items:center;gap:.5rem;font-weight:600;display:flex}.history-card-mode{color:#555;text-transform:capitalize;background:#e5e7eb;border-radius:4px;padding:.1rem .4rem;font-size:.75rem;font-weight:400}.history-card-details{color:#555;margin-top:.25rem;font-size:.875rem}.history-card-date{color:#888;margin-top:.125rem;font-size:.75rem}.wrong-answers-list{background:#fafafa;border:1px solid #d1d5db;border-top:none;border-bottom-right-radius:6px;border-bottom-left-radius:6px;margin:0;padding:.5rem 1rem;list-style:none}.wrong-answer-item{color:#444;padding:.25rem 0;font-family:monospace;font-size:.875rem}