/* S01~S05 강사 스튜디오 · 대시보드·내 강의·강의 편집·레슨·퀴즈
   그누보드: theme/classpick/css/pages/studio-build.css (lms/studio/_head.php에서 로드)
   접두사: sb- (studio-build) */

/* ── 공통 ─────────────────────────────── */
.sb-page{display:flex;flex-direction:column;gap:20px}
/* 검수 중 잠금: 머리와 바닥 사이를 감싸는 fieldset(disabled)은 배치에 끼어들지 않음(그누보드 쪽에만 있음) */
.sb-lockset{display:contents}
.sb-lockset .sb-les[draggable]{cursor:default}
.sb-cols{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:20px;align-items:start}
.sb-cols.is-300{grid-template-columns:minmax(0,1fr) 300px}
.sb-stack{display:flex;flex-direction:column;gap:20px;min-width:0}
.sb-sticky{position:sticky;top:84px}
.sb-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:20px;align-items:start}
@media (max-width:1200px){
  .sb-cols,.sb-cols.is-300{grid-template-columns:minmax(0,1fr)}
  .sb-sticky{position:static}
}
@media (max-width:900px){ .sb-2{grid-template-columns:minmax(0,1fr)} }

.panel-head .sb-ph-sub{font-size:13px;font-weight:500;color:var(--text-3);margin-top:2px}
.panel-head .sb-more{display:inline-flex;align-items:center;gap:2px;font-size:13.5px;font-weight:600;color:var(--text-2);white-space:nowrap}
.panel-head .sb-more:hover{color:var(--text)}
.panel-head .sb-more svg{width:16px;height:16px}
.sb-ph-title{display:flex;align-items:center;gap:8px;flex-wrap:wrap;min-width:0}
.sb-help{font-size:13px;color:var(--text-3);line-height:1.55}
.sb-help b{color:var(--text-2)}
.sb-sec-label{font-size:12px;font-weight:700;color:var(--text-3);letter-spacing:.02em;margin-bottom:8px}

/* 데모용 상태 전환 띠 */
.sb-demo{display:flex;align-items:center;justify-content:space-between;flex-wrap:wrap;gap:8px 12px;padding:8px 8px 8px 12px;border:1px dashed var(--border-strong);border-radius:var(--r-md);background:var(--bg);font-size:12px;font-weight:600;color:var(--text-3)}
.sb-demo > span{display:inline-flex;align-items:center;gap:6px}
.sb-demo > span svg{width:14px;height:14px}
.sb-demo .seg{flex-wrap:wrap}
.sb-demo .seg button{height:28px;padding:0 10px;font-size:12.5px}

/* 드롭다운 메뉴 (layout.js data-dropdown 사용) */
.sb-dd{position:relative;flex:none}
.sb-menu{position:absolute;right:0;top:calc(100% + 6px);z-index:25;min-width:196px;padding:6px;background:var(--bg);border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--sh-3);display:none}
.sb-menu.is-open{display:block}
.sb-menu.is-left{right:auto;left:0}
.sb-menu a,.sb-menu button{display:flex;align-items:center;gap:10px;width:100%;padding:8px 10px;border-radius:var(--r-md);font-size:14px;font-weight:500;color:var(--text-2);text-align:left;white-space:nowrap}
.sb-menu a:hover,.sb-menu button:hover{background:var(--ink-100);color:var(--text)}
.sb-menu svg{width:16px;height:16px}
.sb-menu hr{margin:6px 0}
.sb-menu .sb-menu-h{padding:6px 10px 4px;font-size:12px;font-weight:600;color:var(--text-3)}
.sb-menu .is-danger{color:var(--danger)}
.sb-menu .is-danger:hover{background:var(--danger-bg);color:var(--danger)}
.sb-menu small{margin-left:auto;padding-left:12px;font-size:12px;color:var(--text-3)}
.sb-menu [aria-disabled="true"]{color:var(--text-3)} /* 준비 중인 레슨 유형(누르면 안내 토스트) */
.sb-icon-btn{width:32px;height:32px;border-radius:var(--r-md);display:inline-grid;place-items:center;color:var(--text-3);flex:none}
.sb-icon-btn:hover{background:var(--ink-100);color:var(--text)}
.sb-icon-btn svg{width:17px;height:17px}
.sb-icon-btn:disabled{opacity:.35;pointer-events:none}

/* 작은 스위치 */
.switch.sb-sw-sm{gap:7px;font-size:12.5px;font-weight:600;color:var(--text-2)}
.switch.sb-sw-sm input{width:32px;height:20px}
.switch.sb-sw-sm input::after{width:14px;height:14px}
.switch.sb-sw-sm input:checked::after{transform:translateX(12px)}

/* 행 단위 설정(라벨 + 설명 + 컨트롤) */
.sb-set{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px 0;border-bottom:1px solid var(--border)}
.sb-set:first-child{padding-top:0}
.sb-set:last-child{border-bottom:0;padding-bottom:0}
.sb-set b{display:block;font-size:14.5px;font-weight:700}
.sb-set small{display:block;font-size:13px;color:var(--text-3);margin-top:2px;line-height:1.5}
.sb-set > div:first-child{min-width:0}
.sb-set .switch{flex:none}

/* 회전 아이콘 */
@keyframes sbspin{to{transform:rotate(360deg)}}
.sb-spin{animation:sbspin 1s linear infinite}

/* 상태 표시 점 + 글자 */
.sb-st{display:inline-flex;align-items:center;gap:6px;font-size:12.5px;font-weight:600;white-space:nowrap;color:var(--text-3)}
.sb-st svg{width:14px;height:14px}
.sb-st.ok{color:var(--success)}
.sb-st.proc{color:var(--info)}
.sb-st.err{color:var(--danger)}
.sb-st.warn{color:var(--warn)}

/* 하단 고정 저장 바 */
.sb-foot{position:sticky;bottom:16px;z-index:20;display:flex;align-items:center;gap:12px;padding:10px 12px 10px 18px;background:rgba(255,255,255,.97);backdrop-filter:blur(8px);border:1px solid var(--border);border-radius:var(--r-lg);box-shadow:var(--sh-2)}
.sb-foot .sb-foot-msg{flex:1;min-width:0;font-size:13.5px;color:var(--text-2);display:flex;align-items:center;gap:8px}
.sb-foot .sb-foot-msg svg{width:16px;height:16px;flex:none}
.sb-foot .sb-foot-msg span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sb-foot-acts{display:flex;gap:8px;flex:none}
@media (max-width:768px){
  .sb-foot{bottom:10px;padding:8px}
  .sb-foot .sb-foot-msg{display:none}
  .sb-foot-acts{flex:1}
  .sb-foot-acts .btn{flex:1}
  .sb-foot-acts .btn.btn-icon{flex:none}
}

/* ── S01 대시보드 ─────────────────────── */
.sb-hello{display:flex;align-items:flex-end;justify-content:space-between;gap:12px 20px;flex-wrap:wrap}
.sb-hello h2{font-size:24px;font-weight:800;letter-spacing:-.035em;line-height:1.35}
.sb-hello p{font-size:14.5px;color:var(--text-2);margin-top:4px}
.sb-hello p b{color:var(--text)}
.sb-period{display:inline-flex;align-items:center;gap:6px;height:36px;padding:0 12px;border-radius:var(--r-md);background:var(--bg);border:1px solid var(--border);font-size:13.5px;font-weight:600;color:var(--text-2)}
.sb-period svg{width:16px;height:16px}

.sb-stats{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:16px}
.sb-stats .stat-value small{font-size:16px;font-weight:700;margin-left:2px;letter-spacing:-.01em}
.sb-stats .stat-label svg{width:15px;height:15px}
.sb-stats .stat-meta b{font-weight:700}
.sb-stats .stat-meta .sep{opacity:.4;margin:0 4px}
@media (max-width:1024px){ .sb-stats{grid-template-columns:repeat(2,minmax(0,1fr));gap:12px} }
@media (max-width:480px){ .sb-stats .stat .stat-value{font-size:19px} .sb-stats .stat-value small{font-size:13px} .sb-stats .stat .stat-meta{font-size:12px} }

.sb-dash-top{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:20px;align-items:stretch}
@media (max-width:1200px){
  .sb-dash-top{grid-template-columns:minmax(0,1fr)}
  .sb-dash-top .sb-todo-panel{order:-1}
}

/* 매출 차트 */
.sb-chart-sum{display:flex;flex-wrap:wrap;gap:8px 28px;margin-bottom:18px}
.sb-chart-sum dt{font-size:12.5px;font-weight:600;color:var(--text-3);display:flex;align-items:center;gap:6px}
.sb-chart-sum dd{font-size:19px;font-weight:800;letter-spacing:-.03em;font-variant-numeric:tabular-nums;margin-top:2px}
.sb-key{display:inline-block;width:10px;height:10px;border-radius:3px;flex:none}
.sb-key.a{background:var(--ink-900)}
.sb-key.b{background:var(--lime);box-shadow:inset 0 0 0 1px rgba(24,24,27,.12)}
.sb-chart{position:relative;height:232px}
.sb-chart svg{display:block;width:100%;height:100%;overflow:visible}
.sb-chart .gl{stroke:var(--ink-200);stroke-width:1}
.sb-chart .gl.base{stroke:var(--ink-300)}
.sb-chart text{font-family:var(--font);font-size:11px;fill:var(--text-3);font-variant-numeric:tabular-nums}
.sb-chart .ba{fill:var(--ink-900)}
.sb-chart .bb{fill:var(--lime)}
.sb-chart .col .hit{fill:transparent}
.sb-chart .col.is-hover .hit{fill:var(--ink-100)}
.sb-chart .col.is-today text{fill:var(--text);font-weight:700}
.sb-tip{position:absolute;z-index:3;pointer-events:none;min-width:168px;padding:10px 12px;border-radius:var(--r-md);background:var(--ink-900);color:#fff;font-size:12.5px;line-height:1.5;box-shadow:var(--sh-2);transform:translate(-50%,calc(-100% - 10px))}
.sb-tip b{display:block;font-size:13px;margin-bottom:4px}
.sb-tip div{display:flex;justify-content:space-between;gap:12px;color:rgba(255,255,255,.75)}
.sb-tip div span:last-child{color:#fff;font-weight:700;font-variant-numeric:tabular-nums}
.sb-tip .sb-key{margin-right:6px;vertical-align:-1px}
.sb-tip .sb-key.a{background:#fff}

/* 할 일 */
.sb-todo-panel{display:flex;flex-direction:column}
.sb-todo{display:flex;flex-direction:column;flex:1}
.sb-todo a{display:flex;align-items:center;gap:14px;padding:15px 20px;border-bottom:1px solid var(--border);transition:background .15s}
.sb-todo a:last-child{border-bottom:0}
.sb-todo a:hover{background:var(--ink-50)}
.sb-todo .ic{width:40px;height:40px;border-radius:10px;display:grid;place-items:center;background:var(--ink-100);color:var(--ink-700);flex:none}
.sb-todo .ic.danger{background:var(--danger-bg);color:var(--danger)}
.sb-todo .ic.warn{background:var(--warn-bg);color:var(--warn)}
.sb-todo .ic.info{background:var(--info-bg);color:var(--info)}
.sb-todo .tx{flex:1;min-width:0}
.sb-todo .tx b{display:block;font-size:14.5px;font-weight:700;letter-spacing:-.02em}
.sb-todo .tx small{display:block;font-size:12.5px;color:var(--text-3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sb-todo .n{font-size:22px;font-weight:800;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.sb-todo .n small{font-size:13px;font-weight:600;color:var(--text-3);margin-left:1px}
.sb-todo > a > svg:last-child{color:var(--ink-400);width:16px;height:16px}

/* 강의별 성과 표 */
.sb-perf{min-width:940px}
.sb-perf td{padding:12px 14px;white-space:nowrap}
.sb-perf td:first-child{white-space:normal;min-width:300px}
.sb-perf .sb-cc{display:flex;align-items:center;gap:12px;min-width:0}
.sb-perf .sb-cc > span:last-child{min-width:0}
.sb-perf .sb-cc .ph{width:64px;aspect-ratio:4/3;border-radius:6px;flex:none}
.sb-perf .sb-cc b{font-size:14px;font-weight:700;line-height:1.45;max-width:320px}
.sb-perf .sb-cc small{font-size:12.5px;color:var(--text-3)}
.sb-perf .sb-cc a:hover b{text-decoration:underline;text-underline-offset:3px}
.sb-perf .sb-rate{display:flex;align-items:center;gap:8px;min-width:120px}
.sb-perf .sb-rate .progress{flex:1}
.sb-perf .sb-rate span{font-weight:700;font-variant-numeric:tabular-nums;width:34px;text-align:right}
.sb-perf .sub{display:block;font-size:12px;color:var(--text-3);font-weight:500}
.sb-perf .up{color:var(--lime-ink);font-weight:700}
.sb-perf tfoot td{background:var(--bg-subtle);font-weight:700;border-top:1px solid var(--border);border-bottom:0}

/* 최근 Q&A·수강평 */
.sb-feed > li{display:flex;gap:12px;padding:14px 20px;border-bottom:1px solid var(--border)}
.sb-feed > li:last-child{border-bottom:0}
.sb-feed .grow b{display:block;font-size:14px;font-weight:600;line-height:1.5}
.sb-feed .meta{display:flex;flex-wrap:wrap;align-items:center;gap:4px 10px;margin-top:4px;font-size:12.5px;color:var(--text-3)}
.sb-feed .meta .ts{display:inline-flex;align-items:center;gap:4px;font-weight:600;color:var(--text-2)}
.sb-feed .meta .ts svg{width:12px;height:12px}
.sb-feed p{font-size:13.5px;color:var(--text-2);margin-top:4px;line-height:1.55}
.sb-feed .act{flex:none;align-self:center}
.sb-feed .stars svg{width:13px;height:13px}
@media (max-width:480px){ .sb-feed > li{padding:14px 16px} .sb-feed .act{display:none} }

/* 타임라인 */
.sb-tl{padding:2px 0}
.sb-tl > li{position:relative;padding:0 0 18px 26px}
.sb-tl > li:last-child{padding-bottom:0}
.sb-tl > li::before{content:"";position:absolute;left:5px;top:12px;bottom:-4px;width:2px;background:var(--ink-200)}
.sb-tl > li:last-child::before{display:none}
.sb-tl .pt{position:absolute;left:0;top:5px;width:12px;height:12px;border-radius:50%;background:var(--bg);border:2px solid var(--ink-300)}
.sb-tl .pt.ok{border-color:var(--success);background:var(--success)}
.sb-tl .pt.danger{border-color:var(--danger);background:var(--danger)}
.sb-tl .pt.info{border-color:var(--info);background:var(--bg)}
.sb-tl .pt.now{border-color:var(--ink-900);background:var(--lime)}
.sb-tl time{display:block;font-size:12px;font-weight:500;color:var(--text-3);font-variant-numeric:tabular-nums}
.sb-tl b{display:block;font-size:14px;font-weight:700;line-height:1.45;margin-top:1px}
.sb-tl p{font-size:13px;color:var(--text-2);margin-top:2px;line-height:1.5}
.sb-tl a.lnk{display:inline-flex;align-items:center;gap:2px;margin-top:4px;font-size:13px;font-weight:600;color:var(--text)}
.sb-tl a.lnk svg{width:14px;height:14px}
.sb-tl .badge{margin-right:4px;vertical-align:1px}

/* 운영자 공지 */
.sb-notice > li > a{display:block;padding:12px 20px;border-bottom:1px solid var(--border)}
.sb-notice > li:last-child > a{border-bottom:0}
.sb-notice > li > a:hover{background:var(--ink-50)}
.sb-notice b{display:block;font-size:14px;font-weight:600;line-height:1.5}
.sb-notice .meta{display:flex;align-items:center;gap:8px;margin-bottom:3px;font-size:12px;color:var(--text-3)}

/* ── S02 내 강의 목록 ─────────────────── */
.sb-cl-tabs{padding:0 12px}
.sb-cl-tabs .tab{height:52px}
.sb-cl-bar{display:flex;align-items:center;gap:8px;padding:14px 20px;border-bottom:1px solid var(--border);flex-wrap:wrap}
.sb-cl-bar .input-icon{flex:1;min-width:200px;max-width:360px}
.sb-cl-bar .select{width:auto;min-width:150px}
.sb-cl-bar .sb-cl-count{margin-left:auto;font-size:13px;color:var(--text-3);font-weight:500}
.sb-crow{display:grid;grid-template-columns:136px minmax(0,1fr) 300px 132px;grid-template-areas:"th info nums act";gap:20px;align-items:center;padding:18px 20px;border-bottom:1px solid var(--border)}
.sb-crow:last-child{border-bottom:0}
.sb-crow .th{grid-area:th;display:block;aspect-ratio:4/3;border-radius:var(--r-md)}
.sb-crow .th .badge{position:absolute;left:8px;top:8px;z-index:2}
.sb-crow .info{grid-area:info;min-width:0}
.sb-crow .st-line{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin-bottom:5px}
.sb-crow .ttl{display:block;font-size:16px;font-weight:700;letter-spacing:-.025em;line-height:1.45}
.sb-crow a.ttl:hover{text-decoration:underline;text-underline-offset:3px}
.sb-crow .meta{display:flex;flex-wrap:wrap;gap:2px 10px;margin-top:4px;font-size:13px;color:var(--text-3)}
.sb-crow .meta b{color:var(--text);font-weight:700}
.sb-crow .meta .lime-ink{font-weight:700}
.sb-crow .nums{grid-area:nums;display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:12px}
.sb-crow .nums dt{font-size:12px;font-weight:600;color:var(--text-3)}
.sb-crow .nums dd{font-size:15px;font-weight:700;font-variant-numeric:tabular-nums;margin-top:2px;white-space:nowrap}
.sb-crow .nums dd.none{color:var(--ink-400);font-weight:500}
.sb-crow .nums .star{color:var(--star)}
.sb-crow .act{grid-area:act;display:flex;align-items:center;justify-content:flex-end;gap:4px}
.sb-crow .note{grid-column:2 / -1;margin-top:-6px}
.sb-mini{display:flex;align-items:center;gap:10px;font-size:12.5px;color:var(--text-2);font-weight:600}
.sb-mini .bars{display:flex;gap:3px}
.sb-mini .bars i{width:22px;height:5px;border-radius:3px;background:var(--ink-200)}
.sb-mini .bars i.on{background:var(--ink-900)}
.sb-reject{border-radius:var(--r-md);background:var(--danger-bg);color:#7F1D1D;font-size:13.5px;line-height:1.6}
.sb-reject summary{list-style:none;display:flex;align-items:center;gap:8px;padding:10px 14px;cursor:pointer;font-weight:700}
.sb-reject summary::-webkit-details-marker{display:none}
.sb-reject summary svg{width:16px;height:16px}
.sb-reject summary .chev{margin-left:auto;transition:transform .2s}
.sb-reject[open] summary .chev{transform:rotate(180deg)}
.sb-reject .body{padding:0 14px 12px 38px}
.sb-reject ol{list-style:decimal;padding-left:18px;margin:6px 0 10px}
.sb-reject ol li + li{margin-top:2px}
.sb-reject .by{font-size:12.5px;color:#991B1B;opacity:.85}
.sb-pend{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:13px;color:var(--info);font-weight:600}
.sb-pend svg{width:15px;height:15px}
.sb-pend span.subtle{font-weight:500}
@media (max-width:1200px){
  .sb-crow{grid-template-columns:120px minmax(0,1fr) 132px;grid-template-areas:"th info act" "th nums nums"}
  .sb-crow .nums{max-width:420px}
  .sb-crow .nums.is-none{display:none}
}
@media (max-width:640px){
  .sb-cl-bar{padding:12px 16px}
  .sb-cl-bar .input-icon{max-width:none;flex-basis:100%}
  .sb-cl-bar .select{flex:1}
  .sb-crow{grid-template-columns:96px minmax(0,1fr);grid-template-areas:none;gap:12px 14px;padding:16px}
  .sb-crow .th{grid-area:auto / 1}
  .sb-crow .info{grid-area:auto / 2}
  .sb-crow .nums,.sb-crow .note,.sb-crow .act{grid-area:auto / 1 / auto / -1}
  .sb-crow .nums{order:1} .sb-crow .note{order:2} .sb-crow .act{order:3}
  .sb-crow .nums.is-none{display:none}
  .sb-crow .ttl{font-size:15px}
  .sb-crow .nums{max-width:none;padding:10px 12px;border-radius:var(--r-md);background:var(--bg-subtle)}
  .sb-crow .act{justify-content:stretch}
  .sb-crow .act .btn{flex:1}
  .sb-crow .note{margin-top:0}
  .sb-crow .meta .hide-xs{display:none}
}

/* 첫 방문 빈 상태 */
.sb-first{padding:56px 24px 60px}
.sb-first > p{max-width:440px;margin-left:auto;margin-right:auto}
.sb-first-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:10px;max-width:680px;margin:6px auto 28px;text-align:left}
.sb-first-steps li{display:flex;flex-direction:column;gap:2px;padding:14px;border:1px solid var(--border);border-radius:var(--r-lg);background:var(--bg)}
.sb-first-steps .no{width:24px;height:24px;border-radius:50%;background:var(--ink-900);color:#fff;display:grid;place-items:center;font-size:12px;font-weight:700;margin-bottom:8px}
.sb-first-steps b{font-size:14px;color:var(--text)}
.sb-first-steps small{font-size:12.5px;color:var(--text-3)}
@media (max-width:640px){
  .sb-first{padding:40px 16px 44px}
  .sb-first-steps{grid-template-columns:repeat(2,minmax(0,1fr))}
}

/* ── S03 강의 편집 공통: 편집 헤드 + 단계 탭 ── */
.sb-eh{overflow:hidden}
.sb-eh-top{display:flex;align-items:center;gap:16px;padding:18px 20px}
.sb-eh-top .th{width:104px;aspect-ratio:4/3;border-radius:var(--r-md);flex:none}
.sb-eh-top .th.is-empty{display:grid;place-items:center;background:var(--ink-100);color:var(--ink-400)}
.sb-eh-top .th.is-empty svg{width:26px;height:26px}
.sb-eh-top .info{flex:1;min-width:0}
.sb-eh-top .st-line{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin-bottom:4px;font-size:13px;color:var(--text-3);font-weight:500}
.sb-eh-top h2{font-size:19px;font-weight:800;letter-spacing:-.03em;line-height:1.4}
.sb-eh-top h2.is-empty{color:var(--ink-400)}
.sb-eh-top .meta{display:flex;flex-wrap:wrap;gap:2px 0;margin-top:4px;font-size:13px;color:var(--text-3)}
.sb-eh-top .meta>*+*::before{content:'·';margin:0 7px;color:var(--ink-400);font-weight:400}
.sb-eh-top .meta a{display:inline-flex;align-items:center;gap:2px;font-weight:600;color:var(--text-2)}
.sb-eh-top .meta a:hover{color:var(--text)}
.sb-eh-top .meta svg{width:14px;height:14px}
.sb-saved{display:inline-flex;align-items:center;gap:6px;flex:none;font-size:13px;font-weight:500;color:var(--text-3);white-space:nowrap}
.sb-saved svg{width:15px;height:15px;color:var(--success)}
.sb-saved.is-dirty svg{color:var(--warn)}
.sb-saved.is-saving svg{color:var(--info)}
.sb-steps{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));border-top:1px solid var(--border);background:var(--bg-subtle)}
.sb-steps a{position:relative;display:flex;align-items:center;gap:10px;min-width:0;padding:12px 16px;border-right:1px solid var(--border)}
.sb-steps a:last-child{border-right:0}
.sb-steps a:hover{background:var(--ink-50)}
.sb-steps .no{width:26px;height:26px;border-radius:50%;display:grid;place-items:center;flex:none;font-size:12.5px;font-weight:700;background:var(--bg);box-shadow:inset 0 0 0 1px var(--border-strong);color:var(--text-3)}
.sb-steps .no svg{width:14px;height:14px}
.sb-steps .tx{min-width:0}
.sb-steps b{display:block;font-size:14px;font-weight:700;color:var(--text-2);white-space:nowrap}
.sb-steps small{display:block;font-size:12px;font-weight:500;color:var(--text-3);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sb-steps a.is-done .no{background:var(--lime);box-shadow:none;color:var(--ink-900)}
.sb-steps a.is-doing .no{box-shadow:inset 0 0 0 2px var(--ink-900);color:var(--text)}
.sb-steps a.is-warn .no{background:var(--danger-bg);box-shadow:none;color:var(--danger)}
.sb-steps a.is-warn small{color:var(--danger)}
.sb-steps a.is-pend .no{background:var(--info-bg);box-shadow:none;color:var(--info)}
.sb-steps a.is-pend small{color:var(--info)}
.sb-steps a.is-current{background:var(--bg)}
.sb-steps a.is-current::after{content:"";position:absolute;left:0;right:0;bottom:0;height:2px;background:var(--ink-900)}
.sb-steps a.is-current b{color:var(--text)}
.sb-steps a.is-current:not(.is-done):not(.is-warn):not(.is-pend) .no{background:var(--ink-900);box-shadow:none;color:#fff}
@media (max-width:640px){
  .sb-eh-top{flex-wrap:wrap;gap:12px;padding:16px}
  .sb-eh-top .th{width:72px}
  .sb-eh-top .info{flex-basis:calc(100% - 84px)}
  .sb-eh-top h2{font-size:16.5px}
  .sb-eh-top .sb-saved{width:100%;padding-top:10px;border-top:1px solid var(--border)}
  .sb-steps a{flex-direction:column;gap:5px;padding:10px 4px 11px;text-align:center}
  .sb-steps b{font-size:12.5px}
  .sb-steps small{display:none}
}

/* 편집 폼 부품 */
.sb-lab{display:flex;align-items:baseline;justify-content:space-between;gap:8px}
.sb-count{font-size:12px;font-weight:500;color:var(--text-3);font-variant-numeric:tabular-nums;white-space:nowrap}
.sb-count.is-over{color:var(--danger)}
.sb-form .field + .field,.sb-form .sb-2 + .field,.sb-form .field + .sb-2{margin-top:20px}
.sb-form .sb-2 .field + .field{margin-top:0}
.sb-thumb{display:grid;grid-template-columns:240px minmax(0,1fr);gap:20px;align-items:center}
.sb-thumb > .ph{aspect-ratio:4/3;border-radius:var(--r-md)}
.sb-thumb > .dropzone{aspect-ratio:4/3;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:6px;padding:16px;cursor:pointer;font-size:13px}
.sb-thumb > .dropzone svg{width:24px;height:24px;color:var(--text-3)}
.sb-thumb > .dropzone b{font-size:14px;color:var(--text)}
.sb-rules{display:flex;flex-direction:column;gap:6px;margin-bottom:14px;font-size:13px;color:var(--text-2)}
.sb-rules li{display:flex;gap:7px;align-items:flex-start;line-height:1.5}
.sb-rules svg{width:15px;height:15px;margin-top:2px;flex:none;color:var(--text-3)}
.sb-pick{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.sb-pick label{position:relative;display:flex;align-items:center;gap:12px;padding:10px 36px 10px 10px;border:1px solid var(--border);border-radius:var(--r-md);cursor:pointer;min-width:0}
.sb-pick label:hover{border-color:var(--border-strong)}
.sb-pick label:has(input:checked){border-color:var(--ink-900);box-shadow:inset 0 0 0 1px var(--ink-900)}
.sb-pick input{position:absolute;opacity:0;pointer-events:none}
.sb-pick .ph{width:96px;aspect-ratio:16/9;border-radius:6px;flex:none}
.sb-pick .ph .dur{position:absolute;right:4px;bottom:4px;z-index:2;padding:1px 5px;border-radius:4px;background:rgba(14,16,15,.72);color:#fff;font-size:11px;font-weight:600}
.sb-pick b{display:block;font-size:13.5px;font-weight:700;line-height:1.4}
.sb-pick small{display:block;font-size:12px;color:var(--text-3);margin-top:2px}
.sb-pick .ok{position:absolute;right:10px;top:10px;width:20px;height:20px;border-radius:50%;background:var(--ink-900);color:var(--lime);display:none;place-items:center}
.sb-pick .ok svg{width:13px;height:13px}
.sb-pick label:has(input:checked) .ok{display:grid}
.sb-editor{border:1px solid var(--border-strong);border-radius:var(--r-md);overflow:hidden;background:var(--bg)}
.sb-editor:focus-within{border-color:var(--ink-900);box-shadow:0 0 0 1px var(--ink-900)}
.sb-editor.is-error{border-color:var(--danger);box-shadow:0 0 0 1px var(--danger)}
.sb-tb{display:flex;align-items:center;gap:2px;padding:6px;border-bottom:1px solid var(--border);background:var(--bg-subtle);overflow-x:auto;scrollbar-width:none}
.sb-tb::-webkit-scrollbar{display:none}
.sb-tb button{width:32px;height:32px;border-radius:6px;display:grid;place-items:center;flex:none;color:var(--text-2)}
.sb-tb button:hover{background:var(--bg);color:var(--text);box-shadow:var(--sh-1)}
.sb-tb button.is-on{background:var(--ink-900);color:#fff}
.sb-tb svg{width:16px;height:16px}
.sb-tb .sep{width:1px;height:20px;background:var(--border-strong);margin:0 4px;flex:none}
.sb-tb .grow{flex:1}
.sb-editor .textarea{border:0;border-radius:0;box-shadow:none;min-height:300px;font-size:14.5px}
.sb-editor .textarea:focus{box-shadow:none}
.sb-ed-view{min-height:300px;padding:14px 16px;font-size:14.5px;line-height:1.75;color:var(--text-2)}
.sb-ed-view h3{font-size:16px;font-weight:800;color:var(--text);margin:14px 0 6px}
.sb-ed-view h3:first-child{margin-top:0}
.sb-ed-view ul{list-style:disc;padding-left:20px}
.sb-ed-view p + p{margin-top:8px}
.sb-ed-view .md-img{margin:12px 0}
.sb-ed-view .md-img img{display:block;max-width:100%;height:auto;border-radius:var(--radius-sm,8px);border:1px solid var(--border)}
.sb-ed-view .md-img figcaption{margin-top:6px;font-size:12.5px;color:var(--text-3);text-align:center}
.sb-ed-view mark{background:var(--danger-bg);color:#7F1D1D;padding:0 2px}
.sb-ed-foot{display:flex;justify-content:space-between;gap:8px;padding:8px 12px;border-top:1px solid var(--border);font-size:12px;color:var(--text-3)}
.sb-le{display:flex;flex-direction:column;gap:8px}
.sb-le li{display:flex;align-items:center;gap:6px}
.sb-le li > svg.grip{width:16px;height:16px;flex:none;color:var(--ink-400);cursor:grab}
.sb-le .input{flex:1;min-width:0}
.sb-le-add{margin-top:10px;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.sb-tags{display:flex;flex-wrap:wrap;align-items:center;gap:6px;min-height:44px;padding:7px 8px;border:1px solid var(--border-strong);border-radius:var(--r-md);background:var(--bg)}
.sb-tags:focus-within{border-color:var(--ink-900);box-shadow:0 0 0 1px var(--ink-900)}
.sb-tag{display:inline-flex;align-items:center;gap:2px;height:28px;padding:0 3px 0 10px;border-radius:6px;background:var(--ink-100);font-size:13px;font-weight:600;color:var(--text)}
.sb-tag button{width:22px;height:22px;border-radius:4px;display:grid;place-items:center;color:var(--text-3)}
.sb-tag button:hover{background:var(--ink-200);color:var(--text)}
.sb-tag svg{width:13px;height:13px}
.sb-tags input{flex:1;min-width:140px;height:28px;border:0;outline:0;background:transparent;font-size:14px}
.sb-sugg{display:flex;flex-wrap:wrap;align-items:center;gap:6px;margin-top:8px;font-size:12.5px;color:var(--text-3)}
.sb-sugg button{display:inline-flex;align-items:center;gap:3px;height:26px;padding:0 9px;border-radius:6px;border:1px dashed var(--border-strong);font-size:12.5px;font-weight:600;color:var(--text-2)}
.sb-sugg button:hover{border-style:solid;border-color:var(--ink-900);color:var(--text)}
.sb-sugg svg{width:12px;height:12px}
.sb-card-prev{padding:20px;background:var(--bg-subtle);border-bottom:1px solid var(--border)}
.sb-card-prev .course-card{max-width:280px;margin:0 auto;pointer-events:none}
.sb-checks{display:flex;flex-direction:column}
.sb-checks li{display:flex;align-items:center;gap:9px;padding:6px 0;font-size:13.5px;color:var(--text-2)}
.sb-checks li > svg{width:17px;height:17px;flex:none}
.sb-checks li.ok > svg{color:var(--success)}
.sb-checks li.no > svg{color:var(--ink-300)}
.sb-checks li.err > svg{color:var(--danger)}
.sb-checks li.ok{color:var(--text)}
.sb-checks li small{margin-left:auto;font-size:12px;color:var(--text-3);white-space:nowrap}
@media (max-width:640px){
  .sb-thumb{grid-template-columns:minmax(0,1fr)}
  .sb-thumb > .ph,.sb-thumb > .dropzone{max-width:280px}
  .sb-pick{grid-template-columns:minmax(0,1fr)}
  .sb-tb [data-md="q"],.sb-tb [data-md="code"]{display:none}
}

/* ── S03-2 커리큘럼 트리 ── */
.sb-cur-tools{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.sb-secs{display:flex;flex-direction:column;gap:12px;padding:16px}
.sb-sec{border:1px solid var(--border);border-radius:var(--r-lg);background:var(--bg);overflow:visible}
.sb-sec-h{display:flex;align-items:center;gap:8px;padding:10px 10px 10px 12px;background:var(--bg-subtle);border-radius:var(--r-lg) var(--r-lg) 0 0;border-bottom:1px solid var(--border)}
.sb-sec.is-collapsed .sb-sec-h{border-bottom:0;border-radius:var(--r-lg)}
.sb-sec-h .lab{flex:none;font-size:12px;font-weight:700;color:var(--text-3);white-space:nowrap}
.sb-sec-h .sb-sec-title{flex:1;min-width:0;height:34px;padding:0 8px;border:1px solid transparent;border-radius:6px;background:transparent;font-size:15px;font-weight:700;letter-spacing:-.02em;color:var(--text)}
.sb-sec-h .sb-sec-title:hover{border-color:var(--border-strong);background:var(--bg)}
.sb-sec-h .sb-sec-title:focus{outline:0;border-color:var(--ink-900);background:var(--bg)}
.sb-sec-h .meta{flex:none;font-size:12.5px;color:var(--text-3);font-weight:500;white-space:nowrap}
.sb-sec-h .fold svg{transition:transform .2s}
.sb-sec.is-collapsed .fold svg{transform:rotate(-90deg)}
.sb-sec.is-collapsed .sb-les-list,.sb-sec.is-collapsed .sb-sec-add{display:none}
.sb-les-list{min-height:8px}
.sb-les{display:grid;grid-template-columns:16px 30px minmax(0,1fr) 150px 92px 48px 32px;gap:10px;align-items:center;padding:9px 10px;border-bottom:1px solid var(--border);background:var(--bg)}
.sb-les:hover{background:var(--ink-50)}
.sb-les .grip{color:var(--ink-400);cursor:grab;display:grid;place-items:center}
.sb-les .grip svg{width:16px;height:16px}
.sb-les .ty{width:30px;height:30px;border-radius:7px;display:grid;place-items:center;background:var(--ink-100);color:var(--text-2)}
.sb-les .ty svg{width:15px;height:15px}
.sb-les .ty.quiz{background:var(--info-bg);color:var(--info)}
.sb-les .ty.assignment{background:var(--warn-bg);color:var(--warn)}
.sb-les .tt{min-width:0;display:block}
.sb-les .tt .ln{display:flex;align-items:center;gap:6px;min-width:0}
.sb-les .tt small.no{flex:none;font-size:12px;font-weight:700;color:var(--text-3);font-variant-numeric:tabular-nums}
.sb-les .tt b{font-size:14px;font-weight:600;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.sb-les a.tt:hover b{text-decoration:underline;text-underline-offset:3px}
.sb-les .tt .badge{flex:none}
.sb-les .tt .sub{display:block;margin-top:2px;font-size:12px;color:var(--text-3)}
.sb-les .tt .sub.err{color:var(--danger)}
.sb-les .mt{display:contents}
.sb-les .len{font-size:13px;font-weight:600;color:var(--text-2);text-align:right;font-variant-numeric:tabular-nums}
.sb-les .len.none{color:var(--ink-400);font-weight:500}
.sb-les .pv-none{display:block}
.sb-les.is-err{background:#FFF7F7}
.sb-les.is-err .ty{background:var(--danger-bg);color:var(--danger)}
.sb-les.is-dragging{opacity:.45;background:var(--lime-soft)}
.sb-les.is-new{animation:sbnew 1.2s var(--ease)}
@keyframes sbnew{from{background:var(--lime-soft)}to{background:var(--bg)}}
.sb-les-empty{padding:16px;font-size:13px;color:var(--text-3);text-align:center;border-bottom:1px solid var(--border)}
.sb-sec-add{display:flex;align-items:center;gap:6px;padding:8px 10px;flex-wrap:wrap}
.sb-sec-add .btn svg{width:15px;height:15px}
.sb-add-sec{display:flex;align-items:center;justify-content:center;gap:6px;width:100%;height:52px;border:1.5px dashed var(--border-strong);border-radius:var(--r-lg);font-size:14px;font-weight:700;color:var(--text-2)}
.sb-add-sec:hover{border-color:var(--ink-900);color:var(--text);background:var(--bg)}
.sb-add-sec svg{width:16px;height:16px}
.sb-order{display:flex;flex-direction:column;gap:8px}
.sb-order label{display:flex;gap:10px;align-items:flex-start;padding:12px;border:1px solid var(--border);border-radius:var(--r-md);cursor:pointer}
.sb-order label:has(input:checked){border-color:var(--ink-900);box-shadow:inset 0 0 0 1px var(--ink-900)}
.sb-order .radio{margin-top:1px}
.sb-order b{display:block;font-size:14px;font-weight:700}
.sb-order small{display:block;font-size:12.5px;color:var(--text-3);line-height:1.5;margin-top:2px}
.sb-order .opt{margin-top:8px;display:flex;align-items:center;gap:6px;font-size:13px;color:var(--text-2);flex-wrap:wrap}
.sb-order .opt .select{width:auto;height:32px;font-size:13px;padding:0 30px 0 10px;background-position:right 8px center}
.sb-vstat{display:flex;flex-direction:column;gap:8px}
.sb-vstat li{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:13.5px}
.sb-vstat li b{font-variant-numeric:tabular-nums}
.sb-kv2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.sb-kv2 > div{padding:12px;border-radius:var(--r-md);background:var(--bg-subtle)}
.sb-kv2 dt{font-size:12px;font-weight:600;color:var(--text-3)}
.sb-kv2 dd{font-size:18px;font-weight:800;letter-spacing:-.02em;margin-top:2px;font-variant-numeric:tabular-nums}
.sb-kv2 dd small{display:block;font-size:12px;font-weight:500;color:var(--text-3);letter-spacing:0}
@media (max-width:900px){
  .sb-les{grid-template-columns:16px 30px minmax(0,1fr) 32px;grid-template-areas:"g y t m" "g y s m";row-gap:4px}
  .sb-les .grip{grid-area:g}
  .sb-les .ty{grid-area:y;align-self:start}
  .sb-les .tt{grid-area:t}
  .sb-les .sb-dd{grid-area:m}
  .sb-les .mt{grid-area:s;display:flex;align-items:center;gap:10px;flex-wrap:wrap}
  .sb-les .len{order:-1;text-align:left;font-size:12.5px}
  .sb-les .pv-none{display:none}
}
@media (max-width:640px){
  .sb-secs{padding:12px}
  .sb-sec-h{flex-wrap:wrap;padding:8px}
  .sb-sec-h .sb-sec-title{flex-basis:calc(100% - 120px)}
  .sb-sec-h .meta{order:5;width:100%;padding-left:8px}
  .sb-les{padding:9px 6px 9px 4px;gap:8px}
  .sb-les .tt .ln{display:block}
  .sb-les .tt small.no{margin-right:5px}
  .sb-les .tt b{white-space:normal;display:inline}
  .sb-les .tt .ln .badge{margin-left:6px;vertical-align:1px}
  .sb-les .mt{gap:4px 8px}
}
.sb-menu button:disabled{opacity:.4;pointer-events:none}
.sb-les .sb-st.ok{color:var(--text-3);font-weight:500}
.sb-les .sb-st.ok svg{color:var(--success)}

/* ── S03-3 가격·설정 ── */
.sb-order.is-2{display:grid;grid-template-columns:repeat(2,minmax(0,1fr))}
.sb-order label.is-off{opacity:.5;pointer-events:none}
.sb-won{position:relative;display:block}
.sb-won .input{padding-right:38px;text-align:right;font-weight:700;font-variant-numeric:tabular-nums}
.sb-won::after{content:"원";position:absolute;right:14px;top:50%;transform:translateY(-50%);font-size:14px;font-weight:500;color:var(--text-3);pointer-events:none}
.sb-off{flex:none;white-space:nowrap;display:inline-flex;align-items:center;height:22px;padding:0 7px;border-radius:5px;background:var(--ink-900);color:var(--lime);font-size:12px;font-weight:800}
.sb-dates{display:flex;align-items:center;gap:8px}
.sb-dates .input{flex:1;min-width:0}
.sb-sub-box{margin-top:12px;padding:14px;border-radius:var(--r-md);background:var(--bg-subtle);display:flex;flex-direction:column;gap:12px}
.sb-fee-bar{display:flex;height:10px;border-radius:999px;overflow:hidden;background:var(--ink-200);margin:2px 0 14px}
.sb-fee-bar i{display:block;height:100%}
.sb-fee-bar .pg{background:var(--ink-300)}
.sb-fee-bar .pf{background:var(--ink-700)}
.sb-fee-bar .me{background:var(--lime)}
.sb-fee-rows li{display:flex;align-items:center;justify-content:space-between;gap:8px;padding:7px 0;font-size:13.5px;color:var(--text-2);font-variant-numeric:tabular-nums}
.sb-fee-rows li .k{display:inline-flex;align-items:center;gap:7px}
.sb-fee-rows li .k i.dot{width:8px;height:8px;border-radius:2px;flex:none}
.sb-fee-rows li.neg{color:var(--text-3)}
.sb-fee-rows li.sum{border-top:1px solid var(--border);margin-top:2px;padding-top:9px;color:var(--text);font-weight:700}
.sb-fee-total{margin-top:12px;padding:14px 16px;border-radius:var(--r-md);background:var(--ink-900);color:#fff}
.sb-fee-total small{display:block;font-size:12.5px;color:var(--ink-300);font-weight:500}
.sb-fee-total b{display:block;margin-top:2px;font-size:26px;font-weight:800;letter-spacing:-.03em;color:var(--lime);font-variant-numeric:tabular-nums}
.sb-fee-total span{display:block;margin-top:4px;font-size:12.5px;color:var(--ink-300)}
.sb-chain{display:flex;flex-direction:column;gap:2px;margin-top:14px}
.sb-chain li{display:flex;align-items:center;gap:8px;padding:5px 0;font-size:13px;color:var(--text-3)}
.sb-chain li svg{width:15px;height:15px;flex:none}
.sb-chain li.on{color:var(--text);font-weight:700}
.sb-chain li.on svg{color:var(--success)}
.sb-chain li em{margin-left:auto;font-style:normal;font-weight:500;font-size:12px}
.sb-pkg-head{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.sb-pkg-head .ic{width:40px;height:40px;border-radius:var(--r-md);background:var(--ink-100);display:grid;place-items:center;flex:none}
.sb-pkg-head .ic svg{width:19px;height:19px}
.sb-pkg-head b{display:block;font-size:14.5px}
.sb-pkg-head small{display:block;font-size:12.5px;color:var(--text-3)}
.sb-pkg{min-width:560px}
.sb-pkg td{white-space:nowrap}
.sb-pkg tr.is-me td{background:var(--lime-soft)}
.sb-pkg td.num,.sb-pkg th.num{text-align:right;font-variant-numeric:tabular-nums}
.sb-inline{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:14px}
.sb-inline .select,.sb-inline .input{width:auto;height:36px;font-size:14px}
.sb-inline .select{padding-right:34px}
@media (max-width:640px){
  .sb-order.is-2{grid-template-columns:minmax(0,1fr)}
  .sb-dates{flex-wrap:wrap}
  .sb-dates .input{flex-basis:calc(50% - 16px)}
  .sb-set:has(.sb-inline){flex-direction:column;align-items:flex-start;gap:10px}
  .sb-inline{white-space:nowrap}
}

/* ── S03-4 검수 요청 ── */
.sb-hero{display:flex;align-items:flex-start;gap:16px;padding:22px 24px}
.sb-hero .ic{width:48px;height:48px;border-radius:50%;display:grid;place-items:center;flex:none;background:var(--ink-100);color:var(--text-2)}
.sb-hero .ic svg{width:22px;height:22px}
.sb-hero.is-info .ic{background:var(--info-bg);color:var(--info)}
.sb-hero.is-danger .ic{background:var(--danger-bg);color:var(--danger)}
.sb-hero.is-success .ic{background:var(--success-bg);color:var(--success)}
.sb-hero .tx{flex:1;min-width:0}
.sb-hero h3{font-size:18px;font-weight:800;letter-spacing:-.03em;line-height:1.4}
.sb-hero p{margin-top:4px;font-size:14px;color:var(--text-2);line-height:1.6}
.sb-hero .acts{display:flex;gap:8px;flex-wrap:wrap;margin-top:14px}
.sb-hero .memo{margin-top:14px;padding:12px 14px;border-radius:var(--r-md);background:var(--bg-subtle);font-size:13.5px;line-height:1.6;color:var(--text-2)}
.sb-hero .memo b{display:block;font-size:12px;color:var(--text-3);margin-bottom:2px}
.sb-flow{display:flex;align-items:center;gap:8px;margin-top:16px;flex-wrap:wrap}
.sb-flow .steps{flex-wrap:wrap;row-gap:8px}
.sb-checks.is-lg li{padding:12px 0;border-bottom:1px solid var(--border);align-items:flex-start}
.sb-checks.is-lg li:last-child{border-bottom:0;padding-bottom:0}
.sb-checks.is-lg li:first-child{padding-top:0}
.sb-checks.is-lg li > svg{margin-top:2px}
.sb-checks.is-lg li > span{flex:1;min-width:0}
.sb-checks.is-lg li > span b{display:block;font-size:14px;font-weight:600;color:var(--text)}
.sb-checks.is-lg li > span em{display:block;font-style:normal;font-size:12.5px;color:var(--text-3);margin-top:1px}
.sb-checks.is-lg li.err > span em{color:var(--danger)}
.sb-checks.is-lg li > a{flex:none;font-size:13px;font-weight:700;color:var(--text);display:inline-flex;align-items:center;gap:2px;white-space:nowrap}
.sb-checks.is-lg li > a svg{width:14px;height:14px}
.sb-check-sum{display:flex;align-items:center;gap:12px;margin-bottom:16px}
.sb-check-sum .progress{flex:1}
.sb-check-sum b{font-size:14px;white-space:nowrap}
.sb-fix{display:flex;flex-direction:column;gap:10px}
.sb-fix li{display:flex;gap:12px;padding:14px;border:1px solid var(--border);border-radius:var(--r-md)}
.sb-fix li.is-done{background:var(--bg-subtle)}
.sb-fix .no{width:24px;height:24px;border-radius:50%;display:grid;place-items:center;flex:none;background:var(--danger-bg);color:var(--danger);font-size:12px;font-weight:800}
.sb-fix li.is-done .no{background:var(--success-bg);color:var(--success)}
.sb-fix li.is-done .no svg{width:13px;height:13px}
.sb-fix .tx{flex:1;min-width:0}
.sb-fix .tx p{font-size:14px;line-height:1.6;color:var(--text);margin-top:4px}
.sb-fix li.is-done .tx p{color:var(--text-3);text-decoration:line-through}
.sb-fix .links{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.sb-scope{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}
.sb-scope > div{padding:16px;border-radius:var(--r-md);border:1px solid var(--border)}
.sb-scope h4{display:flex;align-items:center;gap:7px;font-size:14px;font-weight:700;margin-bottom:10px}
.sb-scope h4 svg{width:16px;height:16px}
.sb-scope .now h4 svg{color:var(--success)}
.sb-scope .rv h4 svg{color:var(--info)}
.sb-scope ul{display:flex;flex-direction:column;gap:6px;font-size:13.5px;color:var(--text-2)}
.sb-scope li{padding-left:12px;position:relative;line-height:1.5}
.sb-scope li::before{content:"";position:absolute;left:0;top:9px;width:4px;height:4px;border-radius:50%;background:var(--ink-400)}
.sb-sum-kv{display:grid;grid-template-columns:auto 1fr;gap:8px 16px;font-size:14px}
.sb-sum-kv dt{color:var(--text-3)}
.sb-sum-kv dd{font-weight:600;min-width:0}
.sb-req-foot{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-top:16px}
@media (max-width:640px){
  .sb-hero{flex-direction:column;gap:12px;padding:18px 16px}
  .sb-scope{grid-template-columns:minmax(0,1fr)}
  .sb-req-foot .btn{width:100%}
}
@media (max-width:640px){.sb-eh-top .meta{gap:2px 10px}.sb-eh-top .meta>*+*::before{display:none}}

/* ── S04 레슨 편집 ─────────────────────── */
.sb-ty{width:30px;height:30px;border-radius:7px;display:grid;place-items:center;flex:none;background:var(--ink-100);color:var(--text-2)}
.sb-ty svg{width:15px;height:15px}
.sb-ty.quiz{background:var(--info-bg);color:var(--info)}
.sb-ty.assignment{background:var(--warn-bg);color:var(--warn)}
.sb-ty.is-err{background:var(--danger-bg);color:var(--danger)}
.sb-ty.is-lg{width:46px;height:46px;border-radius:11px}
.sb-ty.is-lg svg{width:21px;height:21px}
.sb-warn-text{color:var(--warn);font-weight:700}
.sb-num{width:64px !important;text-align:center}
.sb-fi{width:40px;height:40px;border-radius:var(--r-md);background:var(--ink-100);display:grid;place-items:center;color:var(--text-2);flex:none}
.sb-fi svg{width:18px;height:18px}
.sb-acts{display:flex;gap:6px;flex-wrap:wrap;margin-top:12px}
.sb-note{display:flex;gap:8px;align-items:flex-start;margin-top:12px;font-size:13px;color:var(--text-3);line-height:1.55}
.sb-note svg{width:15px;height:15px;flex:none;margin-top:2px}
.sb-h-badge{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.sb-h-badge .badge svg{width:12px;height:12px}
.sb-ai-badge{background:var(--ink-900);color:var(--lime)}
.sb-empty-box{display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center;padding:24px 16px;border-radius:var(--r-md);background:var(--bg-subtle);font-size:13.5px;color:var(--text-3);line-height:1.6}
.sb-empty-box > svg{width:24px;height:24px;color:var(--ink-400)}

/* 헤드 */
.sb-lh{overflow:visible}
.sb-lh-bar{display:flex;align-items:center;gap:8px;padding:11px 20px;border-bottom:1px solid var(--border);font-size:13px;color:var(--text-3);min-width:0}
.sb-lh-bar .back{display:inline-flex;align-items:center;gap:4px;font-weight:700;color:var(--text-2);flex:none;margin-right:6px}
.sb-lh-bar .back:hover{color:var(--text)}
.sb-lh-bar .back svg{width:16px;height:16px}
.sb-lh-bar .badge{flex:none}
.sb-lh-bar .crs{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:500}
.sb-lh-bar .grow{flex:1}
.sb-lh-main{display:flex;align-items:center;gap:14px;padding:16px 20px 18px}
.sb-lh-main .info{flex:1;min-width:0}
.sb-lh-main .st-line{display:flex;align-items:center;gap:4px 10px;flex-wrap:wrap;font-size:13px;color:var(--text-3);font-weight:500;margin-bottom:2px}
.sb-lh-main .st-line .no{font-size:13.5px;font-weight:800;color:var(--text)}
.sb-lh-main .st-line .badge svg{width:12px;height:12px}
.sb-lh-title{display:block;width:100%;height:auto;padding:2px 0;border:0;border-bottom:1.5px dashed transparent;border-radius:0;background:none;font:inherit;font-size:21px;font-weight:800;letter-spacing:-.03em;color:var(--text)}
.sb-lh-title:hover{border-bottom-color:var(--border-strong)}
.sb-lh-title:focus{outline:none;border-bottom-color:var(--ink-900)}
.sb-lh-title::placeholder{color:var(--ink-400)}
.sb-lh-nav{display:flex;gap:6px;flex:none}

/* 영상 */
.sb-drop{display:flex;flex-direction:column;align-items:center;gap:8px;padding:36px 20px;cursor:pointer}
.sb-drop:hover{border-color:var(--ink-900)}
.sb-drop .ic{width:54px;height:54px;border-radius:50%;background:var(--bg);display:grid;place-items:center;box-shadow:var(--sh-1);color:var(--text-2);margin-bottom:4px}
.sb-drop .ic svg{width:24px;height:24px}
.sb-drop b{font-size:15.5px;font-weight:700;color:var(--text)}
.sb-drop small{max-width:460px;font-size:13px;color:var(--text-3);line-height:1.55}
.sb-drop .acts{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-top:8px}
.sb-up-file{display:flex;align-items:center;gap:12px;margin-bottom:12px}
.sb-up-file .grow{flex:1;min-width:0}
.sb-up-file b{display:block;font-size:14.5px;font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sb-up-file small{display:block;font-size:12.5px;color:var(--text-3);margin-top:1px}
.sb-up-file .pct{font-size:16px;font-weight:800;font-variant-numeric:tabular-nums}
.sb-vflow{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin-top:16px}
.sb-vflow li{display:flex;align-items:center;gap:6px;font-size:13px;font-weight:600;color:var(--text-3)}
.sb-vflow li + li::before{content:"";width:18px;height:1px;background:var(--border-strong);margin-right:2px}
.sb-vflow .n{width:22px;height:22px;border-radius:50%;display:grid;place-items:center;font-size:11.5px;font-weight:700;background:var(--ink-100);color:var(--text-3)}
.sb-vflow .n svg{width:13px;height:13px}
.sb-vflow .is-done{color:var(--text-2)}
.sb-vflow .is-done .n{background:var(--lime);color:var(--ink-900)}
.sb-vflow .is-doing{color:var(--text)}
.sb-vflow .is-doing .n{background:var(--ink-900);color:#fff}
.sb-vp{position:relative;display:block;aspect-ratio:16/9;border-radius:var(--r-md);overflow:hidden}
.sb-vp .play{position:absolute;left:50%;top:50%;transform:translate(-50%,-50%);z-index:2;width:60px;height:60px;border-radius:50%;background:rgba(14,16,15,.6);color:#fff;display:grid;place-items:center;backdrop-filter:blur(4px)}
.sb-vp .play:hover{background:rgba(14,16,15,.8)}
.sb-vp .play svg{width:24px;height:24px;margin-left:3px}
.sb-vp .dur,.sb-vp .at,.sb-vp .src{position:absolute;z-index:2;display:inline-flex;align-items:center;gap:5px;padding:2px 7px;border-radius:5px;background:rgba(14,16,15,.75);color:#fff;font-size:12px;font-weight:600;font-variant-numeric:tabular-nums}
.sb-vp .dur{right:10px;bottom:14px}
.sb-vp .at{left:10px;bottom:14px;color:var(--lime)}
.sb-vp .src{left:10px;top:10px}
.sb-vp .src svg{width:14px;height:14px}
.sb-vp .bar{position:absolute;left:0;right:0;bottom:0;z-index:2;height:4px;background:rgba(255,255,255,.3)}
.sb-vp .bar > i{display:block;height:100%;width:var(--v,0%);background:var(--lime);transition:width .2s}
.sb-vp .ticks{position:absolute;left:0;right:0;bottom:0;z-index:3;height:4px;pointer-events:none}
.sb-vp .ticks i{position:absolute;top:0;width:2px;height:4px;background:rgba(14,16,15,.85)}
.sb-vp.is-busy::after{content:"";position:absolute;inset:0;z-index:1;background:rgba(14,16,15,.64)}
.sb-vp .busy{position:absolute;inset:0;z-index:2;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;padding:16px;text-align:center;color:#fff}
.sb-vp .busy > svg{width:28px;height:28px}
.sb-vp .busy b{font-size:18px;font-weight:800;font-variant-numeric:tabular-nums}
.sb-vp .busy small{font-size:13px;color:rgba(255,255,255,.78);line-height:1.5}
.sb-vp .busy .progress{width:min(300px,72%);background:rgba(255,255,255,.22)}
.sb-vmeta{display:flex;align-items:flex-start;justify-content:space-between;gap:12px 20px;flex-wrap:wrap;margin-top:14px}
.sb-vmeta dl{display:grid;grid-template-columns:auto minmax(0,1fr);gap:4px 14px;font-size:13.5px;min-width:0}
.sb-vmeta dt{color:var(--text-3)}
.sb-vmeta dd{font-weight:600;overflow-wrap:anywhere}
.sb-vmeta .acts{display:flex;gap:6px;flex-wrap:wrap}
.sb-verr{display:flex;gap:14px;padding:18px;border-radius:var(--r-md);background:var(--danger-bg);border:1px solid rgba(220,38,38,.22)}
.sb-verr .ic{width:40px;height:40px;border-radius:50%;background:var(--bg);color:var(--danger);display:grid;place-items:center;flex:none}
.sb-verr .ic svg{width:20px;height:20px}
.sb-verr .grow{flex:1;min-width:0}
.sb-verr b{font-size:15.5px;font-weight:800;color:#7F1D1D}
.sb-verr p{margin-top:4px;font-size:14px;line-height:1.55;color:#7F1D1D}
.sb-verr small{display:block;margin-top:6px;font-size:12.5px;color:#991B1B;overflow-wrap:anywhere}
.sb-verr .btn-ghost{color:#7F1D1D}
.sb-url-row{display:flex;gap:8px;margin-top:6px}
.sb-url-row .input-icon{flex:1;min-width:0}
.sb-url-prev{display:grid;grid-template-columns:220px minmax(0,1fr);gap:16px;align-items:center;margin-top:14px}
.sb-url-t{display:block;font-size:15px;font-weight:700;margin-bottom:2px}
.sb-url-prev .sb-acts{margin-top:8px}

/* 자막 */
.sb-cap-tools{display:flex;align-items:center;gap:8px;flex-wrap:wrap;margin-bottom:12px}
.sb-cap-tools .input-icon{flex:1;min-width:180px}
.sb-cues{max-height:540px;overflow:auto;border:1px solid var(--border);border-radius:var(--r-md)}
.sb-cue{display:grid;grid-template-columns:62px minmax(0,1fr) 32px;gap:8px;align-items:start;padding:8px 10px;border-bottom:1px solid var(--border)}
.sb-cue:last-child{border-bottom:0}
.sb-cue.is-flag{background:var(--warn-bg)}
.sb-cue.is-on{box-shadow:inset 3px 0 0 var(--ink-900)}
.sb-cue .tc{height:30px;border-radius:6px;background:var(--ink-100);font-size:12.5px;font-weight:700;font-variant-numeric:tabular-nums;color:var(--text-2)}
.sb-cue.is-flag .tc{background:var(--bg)}
.sb-cue .tc:hover,.sb-cue.is-on .tc{background:var(--ink-900);color:#fff}
.sb-cue textarea{display:block;width:100%;min-height:30px;padding:4px 8px;border:1px solid transparent;border-radius:6px;background:transparent;font:inherit;font-size:14px;line-height:1.55;color:var(--text);resize:none;field-sizing:content}
.sb-cue textarea:hover{border-color:var(--border-strong)}
.sb-cue textarea:focus{outline:none;border-color:var(--ink-900);background:var(--bg)}
.sb-cue .tag{display:inline-flex;align-items:center;gap:4px;margin:2px 0 2px 8px;font-size:12px;font-weight:700;color:#92400E}
.sb-cue .tag.is-ok{color:var(--text-3);font-weight:600}
.sb-cue .tag svg{width:13px;height:13px}
.sb-cue-empty{padding:22px;text-align:center;font-size:13.5px;color:var(--text-3)}

/* AI 요약·챕터 */
.sb-ai-empty{display:flex;flex-direction:column;align-items:center;gap:8px;text-align:center;padding:28px 18px;border:1.5px dashed var(--border-strong);border-radius:var(--r-md);background:var(--bg-subtle)}
.sb-ai-empty .ic{width:46px;height:46px;border-radius:50%;background:var(--ink-900);color:var(--lime);display:grid;place-items:center;margin-bottom:4px}
.sb-ai-empty .ic svg{width:22px;height:22px}
.sb-ai-empty b{font-size:15px;font-weight:700}
.sb-ai-empty p{max-width:420px;font-size:13.5px;color:var(--text-3);line-height:1.55}
.sb-ai-empty .btn{margin-top:6px}
.sb-lab .label{margin:0}
.sb-lab{margin-bottom:8px}
.sb-chaps{display:flex;flex-direction:column;gap:8px}
.sb-chaps li{display:grid;grid-template-columns:16px 78px minmax(0,1fr) 32px;gap:6px;align-items:center}
.sb-chaps li > svg.grip{width:16px;height:16px;color:var(--ink-400);cursor:grab}
.sb-chaps .tc{text-align:center;font-variant-numeric:tabular-nums;padding:0 6px}
.sb-ai-review{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-top:20px;padding:14px 16px;border-radius:var(--r-md);background:var(--bg-subtle)}
.sb-ai-review b{display:block;font-size:14.5px;font-weight:700}
.sb-ai-review small{display:block;font-size:13px;color:var(--text-3);margin-top:2px}

/* 본문 에디터 (코드 블록) */
.sb-editor.is-sm .textarea,.sb-editor.is-sm .sb-ed-view{min-height:220px}
.sb-ed-view pre{margin:10px 0;padding:12px 14px;border-radius:var(--r-md);background:var(--ink-900);color:#E4E4E7;font-size:13px;line-height:1.6;overflow-x:auto}
.sb-ed-view code{font-family:ui-monospace,SFMono-Regular,Menlo,Consolas,monospace;font-size:.9em}
.sb-ed-view p code,.sb-ed-view li code{padding:1px 5px;border-radius:4px;background:var(--ink-100);color:var(--text)}
.sb-ed-view ul + p,.sb-ed-view p + ul,.sb-ed-view pre + p{margin-top:8px}

/* 첨부 */
.sb-files{border:1px solid var(--border);border-radius:var(--r-md)}
.sb-files li{display:flex;align-items:center;gap:10px;padding:10px 10px 10px 12px;border-bottom:1px solid var(--border)}
.sb-files li:last-child{border-bottom:0}
.sb-files .grow{flex:1;min-width:0}
.sb-files b{display:block;font-size:14px;font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sb-files small{display:block;font-size:12.5px;color:var(--text-3)}
.sb-files .sb-fi{width:36px;height:36px}
.sb-files .sb-fi svg{width:17px;height:17px}
.sb-files li.empty{justify-content:center;gap:6px;padding:20px;font-size:13.5px;color:var(--text-3)}
.sb-files li.empty svg{width:16px;height:16px}
.sb-linkf{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1.3fr) auto auto;gap:8px;margin-top:10px}

/* 설정 · 같은 섹션 */
.sb-set.is-col{flex-direction:column;align-items:stretch;gap:10px}
.sb-set.is-col .select{width:100%}
.sb-set.is-col .sb-inline .select{flex:1;width:auto}
.sb-set .sb-set-ex{display:block;margin-top:2px;font-size:12.5px;color:var(--text-2);background:var(--bg-subtle);padding:7px 10px;border-radius:var(--r-sm,6px)}
.sb-set > .select{width:auto;flex:none}
.sb-sib{padding:6px}
.sb-sib a{display:flex;align-items:center;gap:10px;padding:7px 8px;border-radius:var(--r-md);min-width:0}
.sb-sib a:hover{background:var(--ink-50)}
.sb-sib a.is-current{background:var(--ink-100)}
.sb-sib a.is-current .sb-ty{background:var(--ink-900);color:var(--lime)}
.sb-sib .sb-ty{width:26px;height:26px;border-radius:6px}
.sb-sib .sb-ty svg{width:13px;height:13px}
.sb-sib .tx{flex:1;min-width:0;display:flex;align-items:baseline;gap:6px;font-size:13.5px}
.sb-sib .tx small{flex:none;font-size:11.5px;font-weight:700;color:var(--text-3);font-variant-numeric:tabular-nums}
.sb-sib .tx b{font-weight:600;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sb-sib a.is-current .tx b{font-weight:800}
.sb-sib .s{flex:none;font-size:12px;color:var(--text-3)}
.sb-sib .s svg{width:15px;height:15px;display:block}
.sb-sib .s.ok{color:var(--success)} .sb-sib .s.proc{color:var(--info)} .sb-sib .s.err{color:var(--danger)} .sb-sib .s.warn{color:var(--warn)}
.sb-sib-nav{display:flex;gap:8px;padding:10px 12px 14px;border-top:1px solid var(--border)}
.sb-sib-nav .btn{flex:1}
.sb-grade{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.sb-grade .grow{flex:1;min-width:150px}
.sb-grade b{display:block;font-size:14.5px;font-weight:700}
.sb-grade small{display:block;font-size:12.5px;color:var(--text-3);margin-top:2px;line-height:1.5}
.sb-grade .btn{width:100%}

/* 과제 */
.sb-subm .sb-set{padding:10px 0}
.sb-subm .sb-set:first-child{padding-top:0}
.sb-req{display:flex;flex-direction:column;gap:10px}
.sb-req li{display:grid;grid-template-columns:16px minmax(0,1fr) 84px 32px;gap:6px;align-items:start}
.sb-req li > svg.grip,.sb-rub li > svg.grip{width:16px;height:16px;color:var(--ink-400);cursor:grab;margin-top:10px}
.sb-req .two{display:flex;flex-direction:column;gap:4px;min-width:0}
.sb-req .two .sub{height:32px;font-size:13px;color:var(--text-2);background:var(--bg-subtle)}
.sb-req .select{height:36px;padding-right:30px;background-position:right 8px center}
.sb-rub-h,.sb-rub li{display:grid;grid-template-columns:16px minmax(0,.8fr) minmax(0,1.4fr) 82px 32px;gap:6px;align-items:center}
.sb-rub-h{font-size:12px;font-weight:700;color:var(--text-3);margin-bottom:6px}
.sb-rub{display:flex;flex-direction:column;gap:8px}
.sb-rub li > svg.grip{margin-top:0}
.sb-pts{position:relative}
.sb-pts .input{padding-right:26px;text-align:right}
.sb-pts span{position:absolute;right:9px;top:50%;transform:translateY(-50%);font-size:12.5px;color:var(--text-3);pointer-events:none}
.sb-rub-total{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-top:14px;padding:10px 14px;border-radius:var(--r-md);background:var(--bg-subtle);font-size:13.5px;color:var(--text-2)}
.sb-rub-total span{display:inline-flex;align-items:center;gap:6px}
.sb-rub-total svg{width:16px;height:16px;color:var(--success)}
.sb-rub-total b{font-variant-numeric:tabular-nums}
.sb-rub-total.is-bad{background:var(--danger-bg);color:#7F1D1D}
.sb-rub-total.is-bad svg{color:var(--danger)}

/* 포스터 고르기 */
.sb-frames{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:10px}
.sb-frames label{position:relative;display:block;border-radius:var(--r-md);overflow:hidden;cursor:pointer;box-shadow:0 0 0 1px var(--border)}
.sb-frames label:has(input:checked){box-shadow:0 0 0 2px var(--ink-900)}
.sb-frames input{position:absolute;opacity:0;pointer-events:none}
.sb-frames .ph{display:block;aspect-ratio:16/9}
.sb-frames small{position:absolute;left:6px;bottom:6px;z-index:2;padding:1px 6px;border-radius:4px;background:rgba(14,16,15,.75);color:#fff;font-size:11.5px;font-weight:600}
.sb-frames .ok{position:absolute;right:6px;top:6px;z-index:2;width:22px;height:22px;border-radius:50%;background:var(--ink-900);color:var(--lime);display:none;place-items:center}
.sb-frames .ok svg{width:13px;height:13px}
.sb-frames label:has(input:checked) .ok{display:grid}

@media (max-width:900px){
  .sb-url-prev{grid-template-columns:minmax(0,1fr)}
  .sb-rub-h{display:none}
  .sb-rub li{grid-template-columns:16px minmax(0,1fr) 82px 32px;grid-template-areas:"g n p d" ". l l .";row-gap:4px}
  .sb-rub li > svg.grip{grid-area:g}
  .sb-rub li > .input:not(.look){grid-area:n}
  .sb-rub li > .look{grid-area:l;height:32px;font-size:13px;background:var(--bg-subtle)}
  .sb-rub li > .sb-pts{grid-area:p}
  .sb-rub li > .sb-icon-btn{grid-area:d}
}
@media (max-width:640px){
  .sb-lh-bar{padding:10px 16px}
  .sb-lh-bar .badge{display:none}
  .sb-lh-main{flex-wrap:wrap;gap:10px 12px;padding:14px 16px 16px}
  .sb-ty.is-lg{width:38px;height:38px;border-radius:9px;align-self:flex-start}
  .sb-ty.is-lg svg{width:18px;height:18px}
  .sb-lh-title{font-size:18px}
  .sb-lh-nav{width:100%}
  .sb-lh-nav .btn{flex:1}
  .sb-drop{padding:26px 14px}
  .sb-vflow li + li::before{width:8px}
  .sb-vflow li{font-size:12.5px}
  .sb-cue{grid-template-columns:54px minmax(0,1fr) 28px;padding:8px}
  .sb-cue .tag{margin-left:4px}
  .sb-chaps li{grid-template-columns:70px minmax(0,1fr) 32px}
  .sb-chaps li > svg.grip{display:none}
  .sb-linkf{grid-template-columns:minmax(0,1fr) minmax(0,1fr)}
  .sb-linkf .input{grid-column:1 / -1}
  .sb-req li{grid-template-columns:minmax(0,1fr) 76px 32px}
  .sb-req li > svg.grip,.sb-rub li > svg.grip{display:none}
  .sb-rub li{grid-template-columns:minmax(0,1fr) 76px 32px;grid-template-areas:"n p d" "l l ."}
  .sb-subm .sb-set{flex-wrap:wrap}
  .sb-ai-review{align-items:flex-start}
}
/* 영상 패널 헤드 — 소스 seg는 줄바꿈 없이, 좁으면 아래 줄로 */
.sb-vhead{flex-wrap:wrap;row-gap:10px}
.sb-vhead .seg button{white-space:nowrap}
@media (max-width:640px){.sb-vhead>div:first-child{flex:1 1 100%}.sb-vhead .seg{flex:1 1 100%}.sb-vhead .seg button{flex:1;justify-content:center}}

/* ══ S05 퀴즈 편집 ══ */
.sb-qhead{flex-wrap:wrap;row-gap:10px}
.sb-qtools{display:flex;align-items:center;gap:8px;flex-wrap:wrap}
.sb-qtools .seg button{white-space:nowrap}
.sb-qlist{display:flex;flex-direction:column;gap:10px}
.sb-qc{border:1px solid var(--border);border-radius:var(--r-lg);background:var(--bg);scroll-margin-top:96px;transition:box-shadow .3s}
.sb-qc.is-err{border-color:var(--danger)}
.sb-qc.is-flash{box-shadow:0 0 0 3px var(--ink-900)}
.sb-qc-h{display:flex;align-items:center;gap:6px 8px;padding:9px 8px 9px 12px;flex-wrap:wrap;border-radius:var(--r-lg)}
.sb-qc:not(.is-closed) .sb-qc-h{background:var(--bg-subtle);border-bottom:1px solid var(--border);border-radius:var(--r-lg) var(--r-lg) 0 0}
.sb-qc-h .no{width:26px;height:26px;border-radius:7px;background:var(--ink-900);color:#fff;font-size:12.5px;font-weight:800;display:grid;place-items:center;flex:none;font-variant-numeric:tabular-nums}
.sb-qc.is-err .sb-qc-h .no{background:var(--danger)}
.sb-qc-h .select{width:auto;height:34px;font-size:13.5px;padding-left:10px;padding-right:30px;background-position:right 8px center}
.sb-qc-h .grow{flex:1}
.sb-qc-h .sb-pts{width:74px;flex:none}
.sb-qc-h .sb-pts .input{height:34px;font-size:14px}
.sb-qc-h .acts{display:flex;align-items:center;gap:0;flex:none}
.sb-qc-h .badge svg{width:12px;height:12px}
.sb-rate{font-size:12.5px;font-weight:600;color:var(--text-3);white-space:nowrap;font-variant-numeric:tabular-nums}
.sb-rate.is-low{color:var(--danger)}
.sb-qc-fold svg{transition:transform .2s}
.sb-qc.is-closed .sb-qc-fold svg{transform:rotate(-90deg)}
.sb-qc-sum{display:flex;align-items:center;gap:10px;padding:0 14px 12px 46px;margin-top:-2px;font-size:14px;color:var(--text-2);min-width:0;cursor:pointer}
.sb-qc-sum .tx{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.sb-qc-sum .tx.is-empty{color:var(--ink-400)}
.sb-qc-sum .ans{flex:none;max-width:42%;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;padding:2px 8px;border-radius:6px;background:var(--ink-100);font-size:12.5px;font-weight:700;color:var(--text)}
.sb-qc-sum .ans.is-bad{background:var(--danger-bg);color:var(--danger)}
.sb-qc-b{display:flex;flex-direction:column;gap:18px;padding:16px}
.sb-qc-b .field + .field{margin-top:0}
.sb-qc-b .label{display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:13.5px}
.sb-qc-b .label .help{font-weight:500}
.sb-qc-b .textarea{min-height:0}
.sb-qc-code .textarea{font-family:var(--font-mono);font-size:13px;line-height:1.7;background:var(--ink-900);border-color:var(--ink-900);color:#E4E4E7;min-height:120px;letter-spacing:0}
.sb-qc-code .textarea:focus{box-shadow:0 0 0 2px var(--ink-400)}
.sb-linkbtn{display:inline-flex;align-items:center;gap:5px;font-size:13px;font-weight:600;color:var(--text-2)}
.sb-linkbtn:hover{color:var(--text)}
.sb-linkbtn svg{width:15px;height:15px}
.sb-opts{display:flex;flex-direction:column;gap:8px}
.sb-opts li{display:grid;grid-template-columns:22px 26px minmax(0,1fr) 32px;gap:8px;align-items:center}
.sb-opts .radio input,.sb-opts .check input{width:20px;height:20px}
.sb-opts .key{width:26px;height:26px;border-radius:50%;background:var(--ink-100);display:grid;place-items:center;font-size:12.5px;font-weight:800;color:var(--text-2)}
.sb-opts.is-multi .key{border-radius:7px}
.sb-opts li.is-ans .key{background:var(--ink-900);color:var(--lime)}
.sb-opts li.is-ans .input{border-color:var(--ink-900)}
.sb-opts .input{font-size:14px}
.sb-opts-foot{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-top:2px}
.sb-oxpick{display:grid;grid-template-columns:1fr 1fr;gap:10px}
.sb-oxpick button{position:relative;display:flex;align-items:center;justify-content:center;gap:10px;height:58px;border:1px solid var(--border-strong);border-radius:var(--r-md);background:var(--bg);font-size:14px;font-weight:600;color:var(--text-2)}
.sb-oxpick button:hover{border-color:var(--ink-900)}
.sb-oxpick b{font-size:24px;font-weight:800;line-height:1;color:var(--ink-400)}
.sb-oxpick .is-on{border-color:var(--ink-900);box-shadow:0 0 0 1px var(--ink-900);color:var(--text)}
.sb-oxpick .is-on b{color:var(--text)}
.sb-oxpick .ok{position:absolute;right:8px;top:8px;width:20px;height:20px;border-radius:50%;background:var(--ink-900);color:var(--lime);display:none;place-items:center}
.sb-oxpick .ok svg{width:12px;height:12px}
.sb-oxpick .is-on .ok{display:grid}
.sb-qc-b .sb-tags{min-height:42px}
.sb-tags .sb-tag code,.sb-qc-sum code{font-family:var(--font-mono)}
.sb-ref{display:grid;grid-template-columns:minmax(0,1fr) 96px;gap:8px}
.sb-ref .input{text-align:center;font-variant-numeric:tabular-nums}
.sb-qc-err{display:flex;flex-direction:column;gap:4px;padding:10px 12px;border-radius:var(--r-md);background:var(--danger-bg);font-size:13px;font-weight:600;color:#7F1D1D}
.sb-qc-err span{display:flex;align-items:center;gap:6px}
.sb-qc-err svg{width:14px;height:14px;color:var(--danger);flex:none}
.sb-q-add{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin-top:12px;padding:10px 12px;border:1px dashed var(--border-strong);border-radius:var(--r-lg)}
.sb-q-add > span{font-size:13px;font-weight:700;color:var(--text-3);margin-right:4px}
.sb-q-total-acts{display:flex;align-items:center;gap:10px}
.sb-q-total-acts .btn{height:30px;font-size:13px}
.sb-q-empty{display:flex;flex-direction:column;align-items:center;gap:10px;text-align:center;padding:36px 16px;border:1px dashed var(--border-strong);border-radius:var(--r-lg);font-size:13.5px;color:var(--text-3);line-height:1.6}
.sb-q-empty .ic{width:48px;height:48px;border-radius:50%;background:var(--ink-900);color:var(--lime);display:grid;place-items:center}
.sb-q-empty .ic svg{width:22px;height:22px}
.sb-q-empty b{font-size:15.5px;color:var(--text)}
.sb-q-empty .acts{display:flex;gap:8px;flex-wrap:wrap;justify-content:center;margin-top:4px}

/* 수강생 화면 미리보기 — 플레이어 퀴즈(front/player-quiz.html)와 같은 다크 톤 */
.sb-qp{padding:16px;border-radius:var(--r-lg);background:var(--dark-900);color:var(--dark-text)}
.sb-qp-bar{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:12px;padding:0 4px;font-size:13px;color:var(--dark-text-3)}
.sb-qp-bar > span{display:inline-flex;align-items:center;gap:6px}
.sb-qp-bar svg{width:14px;height:14px}
.sb-qp-bar .switch{font-size:13px;font-weight:600;color:var(--dark-text-2)}
.sb-qp-bar .switch input{background:var(--dark-600)}
.sb-qp-bar .switch input:checked{background:var(--lime)}
.sb-qp-bar .switch input:checked::after{background:var(--ink-900)}
.sb-qp-q{padding:20px;border-radius:var(--r-lg);background:var(--dark-800);border:1px solid var(--dark-700)}
.sb-qp-q + .sb-qp-q{margin-top:10px}
.sb-qp-h{display:flex;align-items:center;gap:8px;flex-wrap:wrap;font-size:12.5px}
.sb-qp-h .n{font-weight:700;color:var(--lime)}
.sb-qp-h .ty{display:inline-flex;align-items:center;gap:5px;height:22px;padding:0 8px;border-radius:var(--r-sm);background:var(--dark-700);color:var(--dark-text);font-weight:700}
.sb-qp-h .ty svg{width:12px;height:12px}
.sb-qp-h .p{margin-left:auto;color:var(--dark-text-3);font-weight:600;font-variant-numeric:tabular-nums}
.sb-qp-t{margin-top:10px;font-size:16.5px;font-weight:700;line-height:1.55;letter-spacing:-.02em;color:#fff}
.sb-qp-sub{margin-top:4px;font-size:12.5px;color:var(--dark-text-3)}
.sb-qp code{font-family:var(--font-mono);font-size:.88em;padding:1px 6px;border-radius:4px;background:var(--dark-700);color:#fff;letter-spacing:0}
.sb-qp pre{margin:12px 0 0;padding:14px 16px;border-radius:var(--r-md);background:#0A0B0A;border:1px solid var(--dark-700);overflow-x:auto;font-family:var(--font-mono);font-size:13px;line-height:1.7;color:#E4E4E7}
.sb-qp pre code{padding:0;background:none;font-size:inherit}
.sb-qp-opts{display:grid;gap:8px;margin-top:14px}
.sb-qp-opt{display:flex;align-items:center;gap:12px;padding:11px 14px;border-radius:var(--r-md);border:1px solid var(--dark-600);background:var(--dark-900);font-size:14.5px;line-height:1.5}
.sb-qp-opt .k{width:26px;height:26px;border-radius:50%;flex:none;display:grid;place-items:center;font-size:12.5px;font-weight:800;background:var(--dark-700);color:var(--dark-text-2)}
.sb-qp-opts.is-multi .k{border-radius:7px}
.sb-qp.show-ans .sb-qp-opt.is-ans{border-color:var(--lime);background:rgba(197,245,48,.07)}
.sb-qp.show-ans .sb-qp-opt.is-ans .k{background:var(--lime);color:var(--ink-900)}
.sb-qp-ox{display:grid;grid-template-columns:1fr 1fr;gap:10px;margin-top:14px}
.sb-qp-ox div{display:flex;flex-direction:column;align-items:center;gap:4px;padding:16px 10px;border-radius:var(--r-lg);border:1px solid var(--dark-600);background:var(--dark-900);font-size:13px;font-weight:600;color:var(--dark-text-2)}
.sb-qp-ox b{font-size:30px;line-height:1;font-weight:800;color:#fff}
.sb-qp.show-ans .sb-qp-ox .is-ans{border-color:var(--lime);background:rgba(197,245,48,.07)}
.sb-qp.show-ans .sb-qp-ox .is-ans b{color:var(--lime)}
.sb-qp-short{display:flex;align-items:center;margin-top:14px;height:46px;padding:0 14px;border-radius:var(--r-md);border:1px solid var(--dark-600);background:var(--dark-900);font-family:var(--font-mono);font-size:14.5px;color:var(--dark-text-3);letter-spacing:0}
.sb-qp-why{display:none;margin-top:14px;padding:12px 14px;border-radius:var(--r-md);background:var(--dark-700);font-size:13.5px;line-height:1.65;color:var(--dark-text)}
.sb-qp-why b{display:block;margin-bottom:2px;color:var(--lime)}
.sb-qp-why small{display:flex;align-items:center;gap:5px;margin-top:6px;font-size:12.5px;color:var(--dark-text-2)}
.sb-qp-why small svg{width:13px;height:13px}
.sb-qp.show-ans .sb-qp-why{display:block}

/* 응시 현황 */
.sb-qstat{display:grid;grid-template-columns:1fr 1fr;gap:8px}
.sb-qstat div{padding:10px 12px;border-radius:var(--r-md);background:var(--bg-subtle)}
.sb-qstat span{display:block;font-size:12px;font-weight:600;color:var(--text-3)}
.sb-qstat b{display:block;margin-top:2px;font-size:17px;font-weight:800;letter-spacing:-.02em;font-variant-numeric:tabular-nums}
.sb-qbars{display:flex;flex-direction:column;gap:2px;margin-top:14px}
.sb-qbars-h{display:flex;justify-content:space-between;font-size:12px;font-weight:700;color:var(--text-3);margin-bottom:4px}
.sb-qbars button{display:grid;grid-template-columns:22px minmax(0,1fr) 38px;gap:8px;align-items:center;width:100%;padding:4px 4px;border-radius:6px;font-size:12.5px;font-weight:600;color:var(--text-2);text-align:left;font-variant-numeric:tabular-nums}
.sb-qbars button:hover{background:var(--ink-50)}
.sb-qbars .bar{display:block;position:relative;height:8px;border-radius:99px;background:var(--ink-100);overflow:hidden}
.sb-qbars .bar::after{content:"";position:absolute;left:0;top:0;bottom:0;width:var(--w);border-radius:inherit;background:var(--ink-700)}
.sb-qbars .is-low{color:var(--danger)}
.sb-qbars .is-low .bar::after{background:var(--danger)}
.sb-qbars em{font-style:normal;text-align:right}
.sb-qworst{display:flex;gap:8px;align-items:flex-start;margin-top:12px;padding:10px 12px;border-radius:var(--r-md);background:var(--warn-bg);font-size:12.5px;line-height:1.55;color:#78350F}
.sb-qworst svg{width:15px;height:15px;flex:none;margin-top:1px;color:var(--warn)}
.sb-qstat-foot{margin-top:12px}
.sb-qstat-foot .btn{width:100%}

/* AI 초안 불러오기 모달 */
.sb-aiq-l{display:flex;flex-direction:column;gap:2px;max-height:236px;overflow:auto;padding:4px;border:1px solid var(--border);border-radius:var(--r-md)}
.sb-aiq-l label{display:flex;align-items:center;gap:10px;padding:8px;border-radius:var(--r-sm);font-size:14px;cursor:pointer}
.sb-aiq-l label:hover{background:var(--ink-50)}
.sb-aiq-l .tx{flex:1;min-width:0;display:flex;align-items:baseline;gap:6px}
.sb-aiq-l .tx small{flex:none;font-size:11.5px;font-weight:700;color:var(--text-3)}
.sb-aiq-l .tx span{overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:600}
.sb-aiq-l .meta{flex:none;font-size:12px;color:var(--text-3)}
.sb-aiq-l label.is-off{cursor:not-allowed}
.sb-aiq-l label.is-off .tx span{color:var(--text-3);font-weight:500}
.sb-aiq-l label.is-off .meta{color:var(--warn);font-weight:600}
.sb-aiq-row{display:grid;grid-template-columns:repeat(3,auto);justify-content:start;gap:16px 22px;margin-top:16px}
.sb-aiq-row .field{gap:8px}
.sb-aiq-row .field + .field{margin-top:0}
.sb-aiq-row .checks{display:flex;gap:12px;flex-wrap:wrap;min-height:38px;align-items:center}
.sb-aiq-row .check{font-size:14px}
.sb-aiq-busy{display:flex;flex-direction:column;align-items:center;gap:10px;padding:36px 10px 30px;text-align:center}
.sb-aiq-busy .ic{width:52px;height:52px;border-radius:50%;background:var(--ink-900);color:var(--lime);display:grid;place-items:center}
.sb-aiq-busy .ic svg{width:24px;height:24px}
.sb-aiq-busy b{font-size:16px}
.sb-aiq-busy small{font-size:13px;color:var(--text-3)}
@media (max-width:560px){#aiqFoot{flex-wrap:wrap}#aiqFoot .help{flex-basis:100%;margin-bottom:2px}}   /* 좁은 화면: 남은 횟수 안내를 버튼 위 한 줄로 */
.sb-aiq-busy .progress{width:min(320px,100%);margin-top:6px}
.sb-aiq-busy .progress > i{background:var(--ink-900);transition:width .3s}
.sb-aiq-d{display:flex;flex-direction:column;gap:8px}
.sb-aiq-d label{display:flex;gap:12px;align-items:flex-start;padding:12px 14px;border:1px solid var(--border);border-radius:var(--r-md);cursor:pointer}
.sb-aiq-d label:has(input:checked){border-color:var(--ink-900);box-shadow:0 0 0 1px var(--ink-900)}
.sb-aiq-d .check{margin-top:2px}
.sb-aiq-d .grow{flex:1;min-width:0}
.sb-aiq-d .meta{display:flex;gap:4px 10px;flex-wrap:wrap;font-size:12px;font-weight:600;color:var(--text-3)}
.sb-aiq-d b{display:block;margin-top:3px;font-size:14px;font-weight:600;line-height:1.5}
.sb-aiq-d b code,.sb-aiq-d .ans code{font-family:var(--font-mono);font-size:.9em;padding:0 4px;border-radius:4px;background:var(--ink-100)}
.sb-aiq-d .ans{margin-top:4px;font-size:12.5px;color:var(--text-2)}
.sb-aiq-head{display:flex;align-items:center;justify-content:space-between;gap:10px;flex-wrap:wrap;margin-bottom:10px;font-size:13px;color:var(--text-3)}
.sb-aiq-head .sb-linkbtn{font-size:13px}

@media (max-width:640px){
  .sb-qtools{flex:1 1 100%}
  .sb-qtools .seg{flex:1}
  .sb-qtools .seg button{flex:1;justify-content:center}
  .sb-qtools > .btn{flex:1 1 100%}
  .sb-qc-h{padding:8px 6px 8px 10px}
  .sb-qc-h .select{max-width:calc(100% - 110px)}
  .sb-qc-h .grow{flex-basis:100%;order:5;height:0}
  .sb-qc-h .sb-pts,.sb-qc-h .sb-rate,.sb-qc-h .acts{order:6}
  .sb-qc-h .acts{margin-left:auto}
  .sb-qc-h .sb-qc-fold{order:2;margin-left:auto}
  .sb-qc-sum{padding-left:14px}
  .sb-qc-b{padding:14px 12px}
  .sb-opts li{grid-template-columns:22px 24px minmax(0,1fr) 30px;gap:6px}
  .sb-ref{grid-template-columns:minmax(0,1fr) 84px}
  .sb-qp{padding:10px}
  .sb-qp-q{padding:16px}
  .sb-aiq-row{grid-template-columns:1fr}
}
.sb-qtools .seg button:disabled{opacity:.45;cursor:not-allowed}