.quiz-board{flex-direction:column;gap:20px;max-width:800px;margin:0 auto;padding:24px 16px;display:flex}.quiz-upload{border:2px dashed var(--color-border);border-radius:var(--radius-card);background:var(--color-surface);color:var(--color-text-muted);cursor:pointer;flex-direction:column;justify-content:center;align-items:center;gap:12px;padding:48px 24px;transition:border-color .15s,background .15s;display:flex}.quiz-upload:hover,.quiz-upload.drag-over{border-color:var(--color-accent);background:var(--color-accent-tinted-bg)}.quiz-upload-icon{font-size:40px}.quiz-upload-title{color:var(--color-text);font-size:16px;font-weight:600}.quiz-upload-hint{color:var(--color-text-faint);font-size:13px}.quiz-upload-or{color:var(--color-text-faint);margin:4px 0;font-size:12px}.quiz-text-input{width:100%;max-width:560px;min-height:100px;font-family:var(--font-body);border:1px solid var(--color-border);color:var(--color-text);background:var(--color-bg);resize:vertical;border-radius:8px;outline:none;padding:12px 14px;font-size:14px;transition:border-color .15s}.quiz-text-input:focus{border-color:var(--color-accent)}.quiz-actions{flex-wrap:wrap;justify-content:center;gap:10px;display:flex}.quiz-btn{font-family:var(--font-body);cursor:pointer;border:none;border-radius:8px;padding:10px 24px;font-size:14px;font-weight:600;transition:background .16s,transform .1s}.quiz-btn:active{transform:scale(.97)}.quiz-btn:disabled{opacity:.5;cursor:not-allowed}.quiz-btn-primary{background:var(--color-accent);color:#fff}.quiz-btn-primary:hover:not(:disabled){background:var(--color-accent-active)}.quiz-btn-secondary{background:var(--color-surface-alt);color:var(--color-text);border:1px solid var(--color-border)}.quiz-btn-secondary:hover:not(:disabled){background:#00000014}.quiz-btn-danger{color:#fff;background:#e21b3c}.quiz-btn-danger:hover:not(:disabled){background:#c0162f}.quiz-btn-success{color:#fff;background:#26890c}.quiz-btn-success:hover:not(:disabled){background:#1e6e09}.quiz-room-code{background:var(--color-surface);border:var(--border-card);border-radius:var(--radius-card);box-shadow:var(--shadow-card);flex-direction:column;align-items:center;gap:8px;padding:24px;display:flex}.quiz-room-code-label{color:var(--color-text-muted);letter-spacing:.5px;text-transform:uppercase;font-size:13px;font-weight:600}.quiz-room-code-value{letter-spacing:8px;color:var(--color-accent);font-size:48px;font-weight:800;font-family:var(--font-display);cursor:pointer;-webkit-user-select:all;user-select:all;transition:color .15s}.quiz-room-code-value:hover{color:var(--color-accent-active)}.quiz-room-code-copied{color:#26890c;min-height:18px;font-size:12px;font-weight:500}.quiz-room-code-url{color:var(--color-text-faint);word-break:break-all;font-size:12px}.quiz-qr-area{background:var(--color-surface-alt);width:120px;height:120px;color:var(--color-text-faint);border-radius:8px;justify-content:center;align-items:center;font-size:12px;display:flex}.quiz-info-card{background:var(--color-surface);border:var(--border-card);border-radius:var(--radius-card);box-shadow:var(--shadow-card);flex-direction:column;gap:12px;padding:20px 24px;display:flex}.quiz-info-title{font-size:18px;font-weight:700;font-family:var(--font-display)}.quiz-info-meta{color:var(--color-text-muted);gap:16px;font-size:13px;display:flex}.quiz-status-badge{border-radius:var(--radius-pill);padding:4px 12px;font-size:12px;font-weight:600;display:inline-block}.quiz-status-waiting{background:var(--color-accent-tinted-bg);color:var(--color-accent)}.quiz-status-active{color:#26890c;background:#e6f9e6}.quiz-status-finished{color:var(--color-text-muted);background:#f5f5f5}.quiz-player-list{background:var(--color-surface);border:var(--border-card);border-radius:var(--radius-card);padding:16px 20px}.quiz-player-list-header{color:var(--color-text);justify-content:space-between;align-items:center;margin-bottom:12px;font-size:14px;font-weight:600;display:flex}.quiz-player-count{color:var(--color-text-muted);font-size:12px;font-weight:400}.quiz-player-grid{flex-wrap:wrap;gap:8px;display:flex}.quiz-player-chip{background:var(--color-surface-alt);border-radius:var(--radius-pill);align-items:center;gap:6px;padding:6px 12px;font-size:13px;font-weight:500;display:flex}.quiz-player-score{color:var(--color-accent);font-size:11px;font-weight:700}.quiz-question{background:var(--color-surface);border:var(--border-card);border-radius:var(--radius-card);box-shadow:var(--shadow-card);text-align:center;padding:28px 24px}.quiz-question-number{color:var(--color-text-muted);margin-bottom:12px;font-size:13px;font-weight:600}.quiz-question-text{font-size:20px;font-weight:700;font-family:var(--font-display);margin-bottom:20px;line-height:1.4}.quiz-distribution{flex-direction:column;gap:8px;margin-top:16px;display:flex}.quiz-dist-row{align-items:center;gap:10px;display:flex}.quiz-dist-label{color:#fff;border-radius:4px;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;font-size:14px;font-weight:700;display:flex}.quiz-dist-bar-wrap{background:var(--color-surface-alt);border-radius:4px;flex:1;height:28px;position:relative;overflow:hidden}.quiz-dist-bar{border-radius:4px;min-width:2px;height:100%;transition:width .6s}.quiz-dist-bar.correct{outline:2px solid #0003}.quiz-dist-count{color:var(--color-text-muted);text-align:right;width:32px;font-size:13px;font-weight:600}.quiz-options{grid-template-columns:1fr 1fr;gap:12px;padding:16px;display:grid}.quiz-option-btn{border-radius:var(--radius-card);color:#fff;font-family:var(--font-body);cursor:pointer;text-align:center;border:none;justify-content:center;align-items:center;gap:10px;min-height:80px;padding:24px 16px;font-size:16px;font-weight:700;line-height:1.3;transition:transform .1s,opacity .15s;display:flex}.quiz-option-btn:hover:not(:disabled){transform:scale(1.02)}.quiz-option-btn:active:not(:disabled){transform:scale(.97)}.quiz-option-btn:disabled{opacity:.5;cursor:not-allowed}.quiz-option-btn.selected{outline-offset:-4px;outline:4px solid #fffc}.quiz-option-a{background:#e21b3c}.quiz-option-b{background:#1368ce}.quiz-option-c{background:#d89e00}.quiz-option-d{background:#26890c}.quiz-option-shape{flex-shrink:0;font-size:20px}.quiz-timer-bar{background:var(--color-surface-alt);border-radius:3px;width:100%;height:6px;margin-bottom:8px;overflow:hidden}.quiz-timer-fill{background:var(--color-accent);height:100%;animation:timerCountdown var(--timer-duration,30s) linear forwards;border-radius:3px;transition:background .3s}.quiz-timer-fill.warning{background:#d89e00}.quiz-timer-fill.danger{background:#e21b3c}@keyframes timerCountdown{0%{width:100%}to{width:0%}}.quiz-timer-text{color:var(--color-text-muted);text-align:center;margin-bottom:12px;font-size:14px;font-weight:700}.quiz-result{text-align:center;flex-direction:column;align-items:center;gap:16px;padding:32px 24px;display:flex}.quiz-result-icon{font-size:56px}.quiz-result-text{font-size:24px;font-weight:800;font-family:var(--font-display)}.quiz-result-correct{color:#26890c}.quiz-result-wrong{color:#e21b3c}.quiz-result-points{color:var(--color-text-muted);font-size:16px;font-weight:600}.quiz-result-rank{color:var(--color-accent);font-size:14px;font-weight:500}.quiz-leaderboard{background:var(--color-surface);border:var(--border-card);border-radius:var(--radius-card);box-shadow:var(--shadow-card);padding:24px}.quiz-leaderboard-title{font-size:20px;font-weight:700;font-family:var(--font-display);text-align:center;margin-bottom:20px}.quiz-leaderboard-list{flex-direction:column;gap:6px;display:flex}.quiz-leaderboard-row{background:var(--color-surface-alt);border-radius:8px;align-items:center;gap:12px;padding:10px 14px;transition:background .15s;display:flex}.quiz-leaderboard-row:first-child{background:#fff8e1}.quiz-leaderboard-row:nth-child(2){background:#f0f0f0}.quiz-leaderboard-row:nth-child(3){background:#fbe9e7}.quiz-leaderboard-rank{width:28px;color:var(--color-text);text-align:center;font-size:16px;font-weight:800}.quiz-leaderboard-name{flex:1;font-size:15px;font-weight:600}.quiz-leaderboard-score{color:var(--color-accent);font-size:14px;font-weight:700}.quiz-podium{justify-content:center;align-items:flex-end;gap:8px;padding:24px 0;display:flex}.quiz-podium-slot{flex-direction:column;align-items:center;gap:8px;display:flex}.quiz-podium-bar{color:#fff;border-radius:8px 8px 0 0;flex-direction:column;justify-content:flex-end;align-items:center;width:80px;padding:12px 8px;font-size:24px;font-weight:800;display:flex}.quiz-podium-bar-1{background:#fff;height:120px}.quiz-podium-bar-2{background:#fff;height:90px}.quiz-podium-bar-3{background:#fff;height:70px}.quiz-podium-name{color:var(--color-text);text-align:center;text-overflow:ellipsis;white-space:nowrap;max-width:80px;font-size:14px;font-weight:600;overflow:hidden}.quiz-podium-score{color:var(--color-text-muted);font-size:12px;font-weight:500}.quiz-waiting{text-align:center;flex-direction:column;justify-content:center;align-items:center;gap:16px;min-height:60vh;padding:24px;display:flex}.quiz-waiting-icon{font-size:48px;animation:2s ease-in-out infinite pulse}@keyframes pulse{0%,to{opacity:1;transform:scale(1)}50%{opacity:.7;transform:scale(1.1)}}.quiz-waiting-text{color:var(--color-text);font-size:18px;font-weight:600}.quiz-waiting-sub{color:var(--color-text-muted);font-size:14px}.quiz-join{flex-direction:column;justify-content:center;align-items:center;gap:20px;min-height:80vh;padding:24px;display:flex}.quiz-join-title{font-size:28px;font-weight:800;font-family:var(--font-display);letter-spacing:var(--font-display-tracking)}.quiz-join-form{flex-direction:column;gap:12px;width:100%;max-width:320px;display:flex}.quiz-join-input{font-family:var(--font-body);border:1px solid var(--color-border);color:var(--color-text);background:var(--color-surface);text-align:center;border-radius:8px;outline:none;padding:12px 16px;font-size:16px;transition:border-color .15s}.quiz-join-input:focus{border-color:var(--color-accent)}.quiz-join-input.code-input{letter-spacing:6px;font-size:24px;font-weight:700}.quiz-join-btn{background:var(--color-accent);color:#fff;font-family:var(--font-body);cursor:pointer;border:none;border-radius:8px;padding:14px 24px;font-size:16px;font-weight:700;transition:background .16s}.quiz-join-btn:hover:not(:disabled){background:var(--color-accent-active)}.quiz-join-btn:disabled{opacity:.5;cursor:not-allowed}.quiz-play{flex-direction:column;max-width:600px;min-height:100vh;margin:0 auto;padding:16px;display:flex}.quiz-play-header{justify-content:space-between;align-items:center;margin-bottom:12px;padding:8px 0;display:flex}.quiz-play-nickname{color:var(--color-text-muted);font-size:14px;font-weight:600}.quiz-play-score{color:var(--color-accent);font-size:14px;font-weight:700}.llm-settings-modal{width:440px}.llm-settings-modal .modal-body{gap:16px}.llm-settings-field{flex-direction:column;gap:6px;display:flex}.llm-settings-label{color:var(--color-text-muted);letter-spacing:.2px;font-size:12px;font-weight:600}@media (max-width:600px){.quiz-room-code-value{letter-spacing:4px;font-size:32px}.quiz-options{grid-template-columns:1fr;gap:8px}.quiz-option-btn{min-height:60px;padding:16px 12px;font-size:14px}.quiz-podium-bar{width:60px}.quiz-question-text{font-size:16px}}.quiz-empty{text-align:center;flex-direction:column;align-items:center;gap:12px;padding:40px 16px;display:flex}.quiz-empty-icon{font-size:40px}.quiz-empty-title{color:var(--color-text-muted);font-size:15px}.quiz-empty-hint{color:var(--color-text-faint);font-size:13px}.quiz-modal{z-index:1001;background:var(--color-surface);border-radius:var(--radius-card);width:min(720px,100vw - 32px);max-height:calc(100vh - 48px);box-shadow:var(--shadow-card);flex-direction:column;display:flex;position:fixed;top:50%;left:50%;overflow:hidden;transform:translate(-50%,-50%)}.quiz-report-modal{width:min(840px,100vw - 32px)}.quiz-modal-header{border-bottom:1px solid var(--color-border);justify-content:space-between;align-items:center;padding:16px 20px;display:flex}.quiz-modal-title{margin:0;font-size:18px;font-weight:600}.quiz-modal-close{cursor:pointer;color:var(--color-text-muted);background:0 0;border:none;padding:4px 8px;font-size:24px;line-height:1}.quiz-modal-body{padding:20px;overflow:auto}.quiz-modal-tabs{border-bottom:1px solid var(--color-border);gap:0;margin-bottom:20px;display:flex}.quiz-modal-tab{color:var(--color-text-muted);cursor:pointer;background:0 0;border:none;border-bottom:2px solid #0000;flex:1;padding:12px 8px;font-size:14px}.quiz-modal-tab.is-active{color:var(--color-text);border-bottom-color:var(--color-accent);font-weight:600}.quiz-modal-label{color:var(--color-text-muted);margin:16px 0 6px;font-size:13px;display:block}.quiz-modal-file-row{align-items:center;gap:8px;margin-top:8px;display:flex}.quiz-modal-file-clear{color:var(--color-text-faint);cursor:pointer;background:0 0;border:none;font-size:12px}.quiz-modal-count{flex-direction:column;gap:8px;display:flex}.quiz-modal-count-row{align-items:center;gap:8px;font-size:14px;display:flex}.quiz-modal-count-input{border:1px solid var(--color-border);border-radius:var(--radius-btn);width:72px;padding:6px 8px}.quiz-modal-count-input:disabled{opacity:.5}.quiz-modal-count-hint{color:var(--color-text-faint);font-size:12px}.quiz-modal-actions{justify-content:flex-end;gap:8px;margin-top:24px;display:flex}.quiz-modal-error{background:var(--color-status-returned-bg);color:var(--color-status-returned-text);border-radius:var(--radius-btn);margin-top:12px;padding:8px 12px;font-size:13px}.segmented-control{border:1px solid var(--color-border);border-radius:var(--radius-btn);display:inline-flex;overflow:hidden}.segmented-control-item{background:var(--color-surface);color:var(--color-text-muted);cursor:pointer;border:none;border-right:1px solid var(--color-border);padding:8px 16px;font-size:14px}.segmented-control-item:last-child{border-right:none}.segmented-control-item.is-active{background:var(--color-accent);color:#fff;font-weight:600}.segmented-control-item:disabled{cursor:not-allowed;opacity:.58}.quiz-library{flex-direction:column;gap:12px;display:flex}.quiz-library-list{border:1px solid var(--color-border);border-radius:var(--radius-card);max-height:320px;margin:0;padding:0;list-style:none;overflow:auto}.quiz-library-item{border-bottom:1px solid var(--color-border);cursor:pointer;align-items:center;gap:10px;padding:10px 12px;display:flex}.quiz-library-list>li:last-child>.quiz-library-item{border-bottom:none}.quiz-library-item.is-active{background:var(--color-accent-tinted-bg)}.quiz-library-item-main{flex:1;min-width:0}.quiz-library-item-title{text-overflow:ellipsis;white-space:nowrap;font-size:14px;font-weight:500;overflow:hidden}.quiz-library-item-meta{color:var(--color-text-muted);font-size:12px}.quiz-library-empty,.quiz-library-error{color:var(--color-text-muted);flex-direction:column;align-items:center;gap:8px;padding:32px 16px;display:flex}.quiz-library-empty-icon{font-size:36px}.quiz-library-more{align-self:center}.quiz-draft-editor{flex-direction:column;gap:12px;display:flex}.quiz-draft-editor-header{justify-content:space-between;align-items:center;gap:8px;padding-bottom:8px;display:flex}.quiz-draft-editor-title{text-align:center;color:var(--color-text-muted);flex:1;margin:0;font-size:14px;font-weight:600}.quiz-draft-editor-back{color:var(--color-text-muted);cursor:pointer;background:0 0;border:none;font-size:13px}.quiz-draft-editor-error{background:var(--color-status-returned-bg);color:var(--color-status-returned-text);border-radius:var(--radius-btn);padding:8px 12px;font-size:13px}.quiz-draft-editor-list{flex-direction:column;gap:12px;display:flex}.quiz-draft-question{border:1px solid var(--color-border);border-radius:var(--radius-card);flex-direction:column;gap:8px;padding:12px;display:flex}.quiz-draft-question.has-error{border-color:var(--color-danger);animation:.3s quiz-draft-shake}@keyframes quiz-draft-shake{0%,to{transform:translate(0)}25%{transform:translate(-4px)}75%{transform:translate(4px)}}.quiz-draft-question-head{justify-content:space-between;align-items:center;display:flex}.quiz-draft-question-num{color:var(--color-text-muted);font-size:13px;font-weight:600}.quiz-draft-question-delete{color:var(--color-text-muted);cursor:pointer;background:0 0;border:none;font-size:16px}.quiz-draft-question-delete:disabled{opacity:.3;cursor:not-allowed}.quiz-draft-input{border:1px solid var(--color-border);border-radius:var(--radius-btn);width:100%;font-size:14px;font-family:var(--font-body);padding:8px 10px}.quiz-draft-input:focus{outline:2px solid var(--color-accent);outline-offset:-1px}.quiz-draft-options{flex-direction:column;gap:6px;display:flex}.quiz-draft-option{align-items:center;gap:8px;display:flex}.quiz-draft-option-letter{width:16px;color:var(--color-text-muted);font-weight:600}.quiz-draft-option-input{flex:1}.quiz-draft-add{align-self:flex-start}.quiz-report-summary{grid-template-columns:repeat(3,1fr);gap:12px;margin-bottom:20px;display:grid}.quiz-report-stat{border:1px solid var(--color-border);border-radius:var(--radius-card);text-align:center;padding:12px}.quiz-report-stat-label{color:var(--color-text-muted);font-size:12px}.quiz-report-stat-value{margin-top:4px;font-size:22px;font-weight:700}.quiz-report-matrix-wrap{border:1px solid var(--color-border);border-radius:var(--radius-card);max-height:420px;overflow:auto}.quiz-report-matrix{border-collapse:collapse;width:100%;font-size:13px}.quiz-report-matrix th,.quiz-report-matrix td{text-align:center;border-bottom:1px solid var(--color-border);border-right:1px solid var(--color-border);background:var(--color-surface);padding:6px 10px}.quiz-report-matrix thead th{background:var(--color-bg-alt);z-index:1;font-weight:600;position:sticky;top:0}.quiz-report-matrix-name{text-align:left;background:var(--color-bg-alt);z-index:2;min-width:100px;position:sticky;left:0}.quiz-report-matrix thead th.quiz-report-matrix-name{z-index:3}.quiz-report-cell-correct{background:var(--color-status-reviewed-bg);color:var(--color-status-reviewed-text);font-weight:600}.quiz-report-cell-wrong{background:var(--color-status-returned-bg);color:var(--color-status-returned-text)}.quiz-report-cell-empty{color:var(--color-text-faint)}.quiz-report-footer{justify-content:flex-end;margin-top:16px;display:flex}.quiz-report-skeleton{flex-direction:column;gap:8px;padding:32px;display:flex}.quiz-report-skeleton-row{background:var(--color-surface-alt);border-radius:var(--radius-btn);height:20px}.quiz-report-empty{color:var(--color-text-muted);flex-direction:column;align-items:center;gap:8px;padding:40px 16px;display:flex}.quiz-report-empty-icon{font-size:40px}.quiz-report-error{text-align:center;color:var(--color-status-returned-text);padding:16px}.quiz-difficulty-badge{border-radius:var(--radius-pill);color:#fff;padding:2px 8px;font-size:11px;display:inline-block}.quiz-difficulty-badge-easy{background:var(--color-quiz-difficulty-easy)}.quiz-difficulty-badge-medium{background:var(--color-quiz-difficulty-medium);color:var(--color-text)}.quiz-difficulty-badge-hard{background:var(--color-quiz-difficulty-hard)}@media (max-width:600px){.quiz-modal{border-radius:0;width:100vw;height:100vh;max-height:100vh;top:0;left:0;transform:none}.quiz-report-summary{grid-template-columns:1fr}}