/* 직접 입력형 문제 실행기 (exercise-runner.js) */
.ex-box { border: 1.5px solid var(--border); border-radius: 16px; background: var(--white); padding: 16px; margin: 14px 0; }
.ex-head { display: flex; align-items: center; justify-content: space-between; gap: 8px; margin-bottom: 10px; }
.ex-set-title { font-size: 13px; font-weight: 700; color: var(--pink-dark); }
.ex-count { font-size: 12px; color: var(--muted); }
.ex-prompt { font-size: 17px; line-height: 1.7; color: var(--navy); margin: 0 0 10px; }
.ex-prompt strong { color: var(--pink-dark); }
.ex-sub { font-size: 13px; color: var(--muted); margin: 0 0 10px; line-height: 1.6; }
.ex-jp { font-family: 'Noto Serif JP', serif; }
.ex-jp rt { font-size: 0.55em; }
.ex-input-row { display: flex; gap: 8px; align-items: stretch; }
.ex-input { flex: 1; min-width: 0; font-size: 18px; padding: 10px 12px; min-height: 44px; border: 1.5px solid var(--border); border-radius: 10px; font-family: 'Noto Serif JP', serif; color: var(--navy); background: var(--white); box-sizing: border-box; }
.ex-input:focus { outline: 2px solid var(--pink-dark); outline-offset: 1px; }
.ex-input:disabled { background: var(--cream); color: var(--muted); }
.ex-roma { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; color: var(--muted); margin-top: 8px; cursor: pointer; }
.ex-btn { min-height: 44px; padding: 8px 16px; border-radius: 10px; border: 1.5px solid var(--border); background: var(--white); color: var(--navy); font-size: 14px; font-weight: 700; cursor: pointer; }
.ex-btn.primary { background: var(--pink-dark); border-color: var(--pink-dark); color: #fff; }
.ex-actions { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 10px; }
.ex-choices { display: flex; flex-direction: column; gap: 8px; }
.ex-choices.row { flex-direction: row; flex-wrap: wrap; }
.ex-choice { min-height: 44px; padding: 10px 14px; border: 1.5px solid var(--border); border-radius: 10px; background: var(--white); color: var(--navy); font-size: 15px; text-align: left; cursor: pointer; }
.ex-choices.row .ex-choice { flex: 1 1 28%; text-align: center; }
.ex-choice.ok { border-color: #1f7a3d; background: #eaf5ee; color: #1f7a3d; }
.ex-choice.no { border-color: #c0392b; background: #fdeeee; color: #c0392b; }
.ex-choice:disabled { cursor: default; }
.ex-step-line { min-height: 28px; font-size: 15px; color: var(--navy); margin-bottom: 8px; font-family: 'Noto Serif JP', serif; }
.ex-feedback { margin-top: 10px; font-size: 14px; line-height: 1.7; color: var(--text); }
.ex-feedback:empty { display: none; }
.ex-feedback.ok, .ex-feedback.no, .ex-feedback.note { padding: 10px 12px; border-radius: 10px; }
.ex-feedback.ok { background: #eaf5ee; }
.ex-feedback.no { background: #fdeeee; }
.ex-feedback.note { background: #fff8e6; }
.ex-feedback p { margin: 4px 0; }
.ex-fb-title { font-weight: 700; color: var(--navy); }
.ex-hint { font-weight: 700; }
.ex-note { font-size: 12px; color: var(--muted); }
.ex-rem a, .ex-weak a { color: var(--pink-dark); font-weight: 700; }
.ex-steps-wrap { margin-top: 8px; font-size: 13.5px; }
.ex-steps-wrap summary { cursor: pointer; font-weight: 700; color: var(--navy); }
.ex-steps { margin: 6px 0 0; padding-left: 20px; }
.ex-steps li { margin: 3px 0; }
.ex-score { font-size: 16px; font-weight: 700; margin: 0 0 8px; }
.ex-score.ok { color: #1f7a3d; }
.ex-score.no { color: #c0392b; }
.ex-weak { margin: 0 0 8px; padding-left: 20px; font-size: 14px; line-height: 1.7; }

/* 12단계 강의의 학습 흐름 (lesson-flow.js) */
.lf-status { background: var(--white); border: 1.5px solid var(--border); border-radius: 12px; padding: 10px 14px; }
.lf-chips { display: flex; flex-wrap: wrap; gap: 6px; }
.lf-chip { font-size: 12px; font-weight: 700; padding: 3px 10px; border-radius: 12px; border: 1px solid var(--border); color: var(--muted); background: var(--white); }
.lf-chip.on { color: #1f7a3d; border-color: #8fd6a8; background: #eafaf0; }
.lf-note { font-size: 13px; color: var(--muted); margin: 6px 0 0; line-height: 1.7; }
.lf-sub { font-size: 13px; font-weight: 700; color: var(--navy); margin: 0 0 4px; }
.lf-weak { margin: 0 0 6px; padding-left: 20px; font-size: 14px; line-height: 1.7; }
.lf-big { font-size: 15px; line-height: 1.7; color: var(--navy); margin: 0 0 8px; }
.lf-big.ok { color: #1f7a3d; font-weight: 700; }
.lf-big a, .lf-note a, .lf-link { color: var(--pink-dark); font-weight: 700; }
.lf-btn { display: inline-block; min-height: 44px; box-sizing: border-box; padding: 11px 16px; border-radius: 10px; background: #1f9d57; color: #fff; font-size: 14px; font-weight: 700; text-decoration: none; }
.lf-btn:hover { background: #198047; }

/* 행·단 이동 그림: 색만으로 구분하지 않도록 출발·도착 글자에 문구를 함께 쓴다 */
.dan-move { display: flex; flex-wrap: wrap; gap: 6px; align-items: stretch; margin: 6px 0 10px; }
.dan-move .dan-name { font-size: 12px; font-weight: 700; color: var(--navy); align-self: center; margin-right: 4px; }
.dan-move .dan-cell { min-width: 52px; flex: 0 0 auto; border: 1.5px solid var(--border); border-radius: 10px; background: var(--white); padding: 6px 8px; text-align: center; }
.dan-move .dk { display: block; font-family: 'Noto Serif JP', serif; font-size: 20px; color: var(--navy); line-height: 1.3; }
.dan-move .dl { display: block; font-size: 11px; color: var(--muted); }
.dan-move .dan-cell.from { border-color: #1d4e89; border-style: dashed; background: #eef6ff; }
.dan-move .dan-cell.to { border-color: #1f7a3d; background: #eafaf0; }
.dan-move .dan-cell.from .dl::after { content: ' · 출발'; font-weight: 700; color: #1d4e89; }
.dan-move .dan-cell.to .dl::after { content: ' · 도착'; font-weight: 700; color: #1f7a3d; }

/* 시험 형식 표시와 오답 확인 문제 */
.ex-jlpt-tag { display:inline-block; margin:0 0 8px; padding:2px 8px; border-radius:6px; background:#eef3fb; color:#1d4e89; font-size:12px; font-weight:700; }
.ex-probe { margin-top:12px; padding:10px 12px; border:1px dashed var(--border); border-radius:10px; background:var(--white); }
.ex-probe .ex-sub { margin-bottom:6px; }
.ex-probe-result { margin:8px 0 0; font-size:14px; line-height:1.7; color:var(--navy); }
.ex-probe-result:empty { display:none; }