/* 演课场：与研课场共用红金 + 象牙白视觉；学生群体、课堂状态、实时数据用科技蓝/青蓝。
   状态色：发言=红、举手=橙、小组讨论=蓝、思考=金、质疑=紫、未发言=灰。动效克制，尊重 prefers-reduced-motion。 */
:root { --cl-blue: #6aa6ff; --cl-cyan: #49A5FF; --cl-green: #58b889; --cl-orange: #f0a64a; --cl-violet: #a58bff; --cl-grey: #6f6670; }
:root[data-theme="light"] { --cl-blue: #4285D4; --cl-cyan: #49A5FF; --cl-green: #39A96B; --cl-orange: #E89B35; --cl-violet: #7a5ce0; --cl-grey: #c9c1bb; }

body.is-cl main#app { max-width: 1720px; padding: 10px 16px 12px; }
.cl { display: grid; grid-template-rows: auto minmax(0, .92fr) minmax(0, 1.08fr); gap: 10px; color: var(--sw-ink); }
@media (min-width: 1100px) and (min-height: 700px) { .cl { height: calc(100vh - 88px); } }
.cl-top.stage-top { gap: 8px 10px; flex-wrap: nowrap; }
.cl-title { white-space: nowrap; flex: none; font-size: calc(20px * var(--fs)) !important; letter-spacing: .2em !important; }
.cl-top #st-badges { flex: 1 1 auto; min-width: 0; flex-wrap: nowrap; overflow: hidden; mask-image: linear-gradient(90deg, #000 88%, transparent); }
.cl-top #st-badges .badge { flex: none; white-space: nowrap; }
.cl-top > button, .cl-top > label, .cl-top > .mode-switch { flex: none; }
.cl-top .mode-switch .ms-lbl { display: none; }
.cl-top .mode-switch .mode-card { padding: 6px 12px; }
.cl-top .ghost-2 { padding: 7px 12px; font-size: calc(13.5px * var(--fs)); }
.cl-top .ghost { padding: 7px 10px; font-size: calc(13px * var(--fs)); }
.cl-top .autoplay { padding: 9px 20px; min-width: 128px; font-size: calc(15px * var(--fs)); color: #fff; border: 1px solid #D8A14A; background: linear-gradient(120deg, #C62A3D, #8E1426); box-shadow: 0 8px 20px #A6192E40; }
.cl-top .autoplay:hover:not(:disabled) { background: linear-gradient(120deg, #D73A49, #A6192E); }
.cl-gsel { display: inline-flex; align-items: center; gap: 6px; padding: 3px 4px 3px 10px; border-radius: 10px; border: 1px solid var(--sw-line); background: var(--sw-panel); font-size: calc(13px * var(--fs)); color: var(--sw-ink-2); white-space: nowrap; }
.cl-gsel b { color: var(--sw-ink); }
.cl-gsel select { width: auto; padding: 4px 6px; font-size: calc(13px * var(--fs)); border: 0; background: var(--sw-panel-2); }
@media (max-width: 1360px) { .cl-top { flex-wrap: wrap; } .cl-top #st-badges { order: 2; flex-basis: 100%; } }

/* ---------- 上部 ---------- */
.cl-upper { display: grid; grid-template-columns: minmax(0, 1.6fr) minmax(330px, 1fr); gap: 12px; min-height: 0; }
.cl-live-panel, .cl-data, .cl-stage { min-height: 0; background: var(--sw-panel); border: 1px solid var(--sw-line); border-radius: 16px; box-shadow: 0 6px 24px #6b3a2a12; overflow: hidden; }
.cl-live-panel, .cl-data { display: flex; flex-direction: column; animation: sw-in .5s ease both; }
.cl-ph { display: flex; justify-content: space-between; align-items: center; gap: 10px; padding: 10px 14px 6px; }
.cl-ph h2 { margin: 0; font-size: calc(16px * var(--fs)); color: var(--sw-red); letter-spacing: .06em; }
.cl-ph small { color: var(--sw-ink-2); font-size: calc(12px * var(--fs)); }
.cl-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--cl-grey); flex: none; }
.cl-dot.on { background: var(--sw-red); animation: sw-pulse 1.8s ease-out infinite; }
.cl-live-panel .clockbar { margin: 0 14px; padding: 4px 0 8px; border-bottom: 1px solid var(--sw-line); gap: 10px; }
.cl-live-panel .clockbar .time { font-size: calc(18px * var(--fs)); }
.cl-live-panel .clockbar .speed button { padding: 1px 6px; font-size: max(11.5px, calc(11px * var(--fs))); }
.cl-live { flex: 1; min-height: 0; overflow-y: auto; padding: 8px 14px; display: flex; flex-direction: column; gap: 8px; }
.cl-ava { display: grid; place-items: center; flex: none; width: 40px; height: 40px; border-radius: 50%; overflow: hidden; background: #f3ece6; border: 1.5px solid #e6d6cb; font-size: 12px; color: var(--sw-ink-2); }
.cl-ava img, .cl-ava svg { width: 100%; height: 100%; object-fit: cover; display: block; }
.cl-ava.s { background: var(--sw-line); }
.cl-now, .cl-guide { display: grid; grid-template-columns: 48px minmax(0, 1fr); gap: 10px; align-items: start; padding: 10px 12px; border-radius: 12px; border: 1px solid var(--sw-line); background: var(--sw-panel-2); }
.cl-now .cl-ava, .cl-guide .cl-ava { width: 48px; height: 48px; }
.cl-now { border-color: #D73A4944; background: linear-gradient(90deg, var(--sw-red-soft), var(--sw-panel-2) 55%); }
.cl-now .cl-ava { border-color: #D73A49; }
.cl-now .cl-ava.pulse { animation: sw-pulse 1.8s ease-out infinite; }
.cl-guide { background: linear-gradient(90deg, #4285D410, var(--sw-panel-2) 55%); }
.cl-nh { display: flex; flex-wrap: wrap; align-items: center; gap: 4px 8px; }
.cl-nh b { font-size: calc(14px * var(--fs)); }
.cl-now p, .cl-guide p { margin: 3px 0 0; font-size: calc(14.5px * var(--fs)); line-height: 1.65; }
.cl-guide p { font-size: calc(13.5px * var(--fs)); }
.ct { font-size: max(11.5px, calc(11px * var(--fs))); padding: 1px 7px; border-radius: 999px; border: 1px solid var(--sw-line); color: var(--sw-ink-2); white-space: nowrap; }
.ct-t { color: #fff; background: linear-gradient(120deg, #C62A3D, #A6192E); border-color: transparent; }
.ct-q { color: var(--cl-violet); border-color: color-mix(in srgb, var(--cl-violet) 45%, transparent); }
.ct-g { color: var(--cl-blue); border-color: color-mix(in srgb, var(--cl-blue) 45%, transparent); }
.ct-i { color: var(--sw-red); border-color: #D8A14A88; background: var(--sw-gold-soft); }
.ct-e { color: var(--sw-gold); border-color: #D8A14A88; }
.ct-h { color: var(--cl-blue); background: color-mix(in srgb, var(--cl-blue) 12%, transparent); border-color: transparent; }
.ct-live { color: #fff; background: #A6192E; border-color: transparent; }
.cl-evs { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 4px; }
.cl-evs.all { max-height: none; }
.cl-ev { display: flex; flex-wrap: wrap; align-items: baseline; gap: 4px 8px; padding: 6px 10px; border-radius: 10px; font-size: calc(13px * var(--fs)); border-left: 3px solid var(--sw-line); background: var(--sw-panel-2); }
.cl-ev.fresh { animation: sw-msg .35s ease both; }
.cl-evw { font-weight: 700; }
.cl-evt { flex-basis: 100%; color: var(--sw-ink-2); line-height: 1.55; }
.cl-live-foot { display: flex; align-items: flex-start; gap: 8px; padding: 6px 14px 10px; border-top: 1px solid var(--sw-line); }
.cl-prompt { flex: 1; min-width: 0; }
.cl-prompt summary { cursor: pointer; font-size: calc(13px * var(--fs)); color: var(--sw-gold); padding: 3px 0; }
.cl-prompt .prompter { max-height: 150px; overflow: auto; margin-top: 4px; }
.cl-empty { padding: 14px 10px; color: var(--sw-ink-2); font-size: calc(13px * var(--fs)); line-height: 1.7; text-align: center; }
.cl-empty b { color: var(--sw-ink); display: block; margin-bottom: 4px; }
.cl-note { margin: 6px 0 0; font-size: max(12px, calc(11.5px * var(--fs))); color: var(--sw-ink-2); }

/* 课堂实时数据 */
.cl-data-body { flex: 1; min-height: 0; overflow-y: auto; padding: 4px 14px 12px; }
.cl-metrics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 8px; }
.cl-m { padding: 8px 10px; border-radius: 12px; border: 1px solid var(--sw-line); background: var(--sw-panel-2); display: flex; flex-direction: column; gap: 1px; }
.cl-m b { font-size: calc(20px * var(--fs)); line-height: 1.2; color: var(--sw-ink); font-variant-numeric: tabular-nums; }
.cl-m span { font-size: calc(12.5px * var(--fs)); color: var(--sw-ink); }
.cl-m small { font-size: max(11.5px, calc(11px * var(--fs))); color: var(--sw-ink-2); }
.cl-m:nth-child(1) b { color: var(--cl-blue); } .cl-m:nth-child(4) b { color: var(--cl-orange); } .cl-m:nth-child(5) b { color: var(--cl-violet); }
.cl-act { margin-top: 10px; }
.cl-act-h { display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 4px; }
.cl-act-h b { font-size: calc(13.5px * var(--fs)); } .cl-act-h span { font-size: max(11.5px, calc(11px * var(--fs))); color: var(--sw-ink-2); }
.cl-bar { display: grid; grid-template-columns: 52px minmax(0, 1fr) 48px; gap: 8px; align-items: center; width: 100%; padding: 2px 0; border: 0; background: none; font-size: calc(12.5px * var(--fs)); color: var(--sw-ink-2); text-align: left; }
.cl-bar:hover:not(:disabled) { background: none; color: var(--sw-ink); transform: none; }
.cl-bar i { height: 7px; border-radius: 7px; background: var(--sw-line); overflow: hidden; }
.cl-bar em { display: block; height: 100%; border-radius: 7px; background: linear-gradient(90deg, #4285D4, #49A5FF); transition: width .8s cubic-bezier(.2, .7, .2, 1); }
.cl-bar span:last-child { text-align: right; font-variant-numeric: tabular-nums; }

/* ---------- 下部：教师 + 小组 ---------- */
.cl-stage { display: grid; grid-template-columns: 150px minmax(0, 1fr); background: var(--sw-table); position: relative; isolation: isolate; }
.cl-stage::before { content: ""; position: absolute; inset: 0; z-index: -1; opacity: .45; background-image: linear-gradient(var(--sw-line) 1px, transparent 1px), linear-gradient(90deg, var(--sw-line) 1px, transparent 1px); background-size: 40px 40px; mask-image: radial-gradient(ellipse at 55% 30%, #000, transparent 70%); }
.cl-rail { display: flex; flex-direction: column; gap: 4px; padding: 10px 8px; border-right: 1px solid var(--sw-line); background: color-mix(in srgb, var(--sw-panel) 70%, transparent); }
.cl-rail button { text-align: left; border: 0; background: none; padding: 7px 10px; border-radius: 10px; font-size: calc(13.5px * var(--fs)); color: var(--sw-ink-2); }
.cl-rail button:hover:not(:disabled) { background: var(--sw-red-soft); color: var(--sw-red); transform: none; }
.cl-rail button.on { color: #fff; background: linear-gradient(120deg, #C62A3D, #A6192E); font-weight: 700; }
.cl-legend { margin-top: auto; display: flex; flex-direction: column; gap: 3px; padding: 8px 6px 2px; border-top: 1px solid var(--sw-line); font-size: max(11.5px, calc(11.5px * var(--fs))); color: var(--sw-ink-2); }
.cl-legend span { display: flex; align-items: center; gap: 6px; } .cl-legend b { margin-left: auto; color: var(--sw-ink); font-variant-numeric: tabular-nums; }
.sd { display: inline-block; flex: none; width: 9px; height: 9px; border-radius: 50%; background: var(--cl-grey); border: 1.5px solid var(--sw-panel); box-shadow: 0 0 0 1px var(--sw-line); }
.sd-speaking { background: #D73A49; } .sd-hand { background: var(--cl-orange); } .sd-discussing { background: var(--cl-blue); } .sd-thinking { background: #D8A14A; }
.sd-questioning { background: var(--cl-cyan); } .sd-challenging { background: var(--cl-violet); } .sd-reflecting { background: var(--cl-green); } .sd-silent { background: transparent; box-shadow: 0 0 0 1px var(--cl-grey); } .sd-listening { background: color-mix(in srgb, var(--cl-green) 55%, var(--cl-grey)); }
.cl-main { display: grid; grid-template-rows: auto minmax(0, 1fr); min-width: 0; min-height: 0; }
.cl-head { display: grid; grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr); align-items: center; gap: 10px; padding: 8px 12px 4px; }
.cl-head > #cl-teacher { grid-column: 2; grid-row: 1; }
.cl-focus-row { grid-column: 1; grid-row: 1; display: flex; gap: 6px; overflow-x: auto; scrollbar-width: none; min-width: 0; }
.cl-tools { grid-column: 3; grid-row: 1; display: flex; gap: 6px; justify-content: flex-end; flex-wrap: wrap; align-items: center; }
.cl-tools > button, .cl-tsel select { padding: 5px 10px; font-size: calc(12.5px * var(--fs)); border-radius: 8px; }
.cl-tsel select { width: auto; }
.cl-tools .participate { position: static; right: auto; bottom: auto; z-index: auto; padding: 6px 14px; border-radius: 8px; font-size: calc(13px * var(--fs)); box-shadow: 0 6px 16px #A6192E33; background: linear-gradient(120deg, #C62A3D, #8E1426); border: 1px solid #D8A14A; color: #fff; }
.cl-teacher { display: flex; align-items: center; gap: 10px; padding: 6px 16px 6px 6px; border-radius: 40px; background: var(--sw-panel); border: 1px solid #D8A14A77; box-shadow: 0 8px 22px #6b3a2a1c; }
.cl-teacher .cl-ava { width: 48px; height: 48px; border-color: #D8A14A; }
.cl-teacher.speaking .cl-ava { border-color: #D73A49; animation: sw-pulse 1.8s ease-out infinite; }
.cl-teacher b { display: block; font-size: calc(14px * var(--fs)); white-space: nowrap; }
.cl-teacher small { color: var(--sw-red); font-size: calc(12px * var(--fs)); }
.cl-focus { display: inline-flex; align-items: center; gap: 6px; flex: none; padding: 3px 10px 3px 3px; border-radius: 999px; border: 1px solid var(--sw-line); background: var(--sw-panel); text-align: left; }
.cl-focus:hover:not(:disabled) { transform: translateY(-1px); background: var(--sw-panel); border-color: #D8A14A88; }
.cl-focus .cl-ava { width: 28px; height: 28px; }
.cl-focus b { display: block; font-size: calc(12.5px * var(--fs)); line-height: 1.2; } .cl-focus small { display: block; font-size: max(11px, calc(10.5px * var(--fs))); color: var(--sw-ink-2); white-space: nowrap; }
.f-speaking { border-color: #D73A4988; } .f-hand { border-color: color-mix(in srgb, var(--cl-orange) 60%, transparent); } .f-challenging { border-color: color-mix(in srgb, var(--cl-violet) 55%, transparent); } .f-good { border-color: color-mix(in srgb, var(--cl-green) 55%, transparent); } .f-silent { border-style: dashed; }
.cl-focus-grid { display: flex; flex-wrap: wrap; gap: 8px; }
.cl-focus-grid .cl-focus { padding: 6px 14px 6px 6px; } .cl-focus-grid .cl-ava { width: 40px; height: 40px; }
.cl-body { min-height: 0; overflow: auto; padding: 6px 12px 12px; }
.cl-groups { display: grid; grid-template-columns: repeat(var(--n, 4), minmax(0, 1fr)); gap: 10px; }
.cl-group { position: relative; display: flex; flex-direction: column; gap: 6px; padding: 8px 10px; border-radius: 14px; text-align: left; background: var(--sw-panel); border: 1px solid var(--sw-line); color: var(--sw-ink); box-shadow: 0 4px 14px #6b3a2a10; transition: border-color .3s, box-shadow .3s, transform .25s; }
.cl-group:hover:not(:disabled) { background: var(--sw-panel); transform: translateY(-2px); border-color: #D8A14A88; }
.cl-gh { display: flex; align-items: center; gap: 6px; }
.cl-gh b { font-size: calc(14px * var(--fs)); } .cl-gh small { color: var(--sw-ink-2); font-size: calc(12px * var(--fs)); }
.cl-gst { margin-left: auto; font-size: max(11.5px, calc(11px * var(--fs))); padding: 1px 8px; border-radius: 999px; background: var(--sw-line); color: var(--sw-ink-2); white-space: nowrap; }
.gs-speaking, .gs-report { border-color: #D73A49; box-shadow: 0 0 0 3px #D73A4918, 0 8px 20px #A6192E22; }
.gs-speaking .cl-gst, .gs-report .cl-gst { background: #A6192E; color: #fff; }
.gs-discussing { border-color: color-mix(in srgb, var(--cl-blue) 60%, transparent); box-shadow: 0 0 0 3px color-mix(in srgb, var(--cl-blue) 12%, transparent); }
.gs-discussing .cl-gst { background: color-mix(in srgb, var(--cl-blue) 14%, transparent); color: var(--cl-blue); }
.gs-hand .cl-gst { background: color-mix(in srgb, var(--cl-orange) 16%, transparent); color: var(--cl-orange); }
.gs-silent { border-style: dashed; } .gs-silent .cl-gst { color: var(--sw-ink-2); }
.gs-done .cl-gst { color: var(--cl-green); background: color-mix(in srgb, var(--cl-green) 12%, transparent); }
.cl-grep { position: relative; display: flex; align-items: center; gap: 8px; }
.cl-grep > .cl-ava { width: 44px; height: 44px; }
.cl-grep > .cl-ava.st-speaking { border-color: #D73A49; animation: sw-pulse 1.8s ease-out infinite; }
.cl-grep > .cl-ava.st-hand { border-color: var(--cl-orange); } .cl-grep > .cl-ava.st-discussing { border-color: var(--cl-blue); }
.cl-hand { position: absolute; left: 30px; top: -8px; font-size: 15px; animation: cl-bounce .6s ease 1; }
@keyframes cl-bounce { 0% { transform: translateY(6px) scale(.6); opacity: 0; } 60% { transform: translateY(-3px) scale(1.1); opacity: 1; } 100% { transform: none; } }
.cl-grn { min-width: 0; display: flex; flex-direction: column; }
.cl-grn b { font-size: calc(13px * var(--fs)); white-space: nowrap; } .cl-grn small { font-size: max(11.5px, calc(11px * var(--fs))); color: var(--sw-ink-2); }
.cl-dots { margin-left: auto; display: flex; gap: 4px; }
.cl-dots .sd { width: 12px; height: 12px; }
.cl-gf { font-size: max(11.5px, calc(11px * var(--fs))); color: var(--sw-ink-2); }
.cl-gm { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 4px; }
.cl-mem { display: flex; flex-direction: column; align-items: center; gap: 1px; font-size: max(11px, calc(10.5px * var(--fs))); color: var(--sw-ink-2); }
.cl-mem .cl-ava { width: 32px; height: 32px; } .cl-mem small { color: var(--sw-ink); } .cl-mem em { font-style: normal; }
.cl-mem.st-speaking .cl-ava { border-color: #D73A49; } .cl-mem.st-hand .cl-ava { border-color: var(--cl-orange); } .cl-mem.st-discussing .cl-ava { border-color: var(--cl-blue); } .cl-mem.st-silent { opacity: .7; }
/* 发言队列 · 思政要点 · 小组详情 */
.cl-queue { display: grid; grid-template-columns: 1fr 1.4fr; gap: 16px; }
.cl-queue h4 { margin: 0 0 6px; font-size: calc(13.5px * var(--fs)); color: var(--sw-red); }
.cl-queue ul, .cl-queue ol { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 6px; }
.cl-queue li { display: flex; align-items: center; gap: 8px; padding: 6px 8px; border-radius: 10px; background: var(--sw-panel); border: 1px solid var(--sw-line); transition: transform .3s; }
.cl-queue li > span { flex: 1; } .cl-queue li b { display: block; font-size: calc(13px * var(--fs)); } .cl-queue li small { font-size: max(11.5px, calc(11px * var(--fs))); color: var(--sw-ink-2); }
.cl-ideo { padding: 8px 10px; margin-bottom: 8px; border-radius: 12px; border: 1px solid #D73A4933; background: linear-gradient(135deg, #fff5f3, #fff9f0); }
:root:not([data-theme="light"]) .cl-ideo { background: linear-gradient(135deg, #2a1418, #241b12); }
.cl-ideo > b { color: var(--sw-red); margin-right: 6px; }
.cl-ideo blockquote { margin: 6px 0 0; padding: 4px 10px; border-left: 3px solid #D8A14A; font-size: calc(13px * var(--fs)); line-height: 1.6; }
.cl-ideo cite { display: block; font-style: normal; font-size: max(11.5px, calc(11px * var(--fs))); color: var(--sw-ink-2); }
.cl-gd td { vertical-align: middle; } .cl-gd .cl-ava { width: 32px; height: 32px; }
.cl-st { font-size: calc(12px * var(--fs)); padding: 1px 8px; border-radius: 999px; background: var(--sw-line); }
.cl-st.st-speaking { background: #A6192E; color: #fff; } .cl-st.st-hand { color: var(--cl-orange); } .cl-st.st-discussing { color: var(--cl-blue); } .cl-st.st-challenging { color: var(--cl-violet); } .cl-st.st-silent { color: var(--sw-ink-2); }
.cl-silent { display: flex; flex-wrap: wrap; gap: 8px; }

/* ---------- 响应式 ---------- */
@media (min-width: 1100px) and (max-height: 820px) { .cl { height: auto; } .cl-upper { height: 360px; } .cl-stage { min-height: 380px; } }
@media (max-width: 1100px) {
  .cl { height: auto; grid-template-rows: auto; }
  .cl-upper { grid-template-columns: 1fr; } .cl-live-panel { height: 60vh; } .cl-data { max-height: 60vh; }
  .cl-stage { grid-template-columns: 1fr; } .cl-rail { flex-direction: row; overflow-x: auto; border-right: 0; border-bottom: 1px solid var(--sw-line); } .cl-legend { display: none; }
  .cl-head { grid-template-columns: 1fr; } .cl-head > * { grid-column: 1 !important; grid-row: auto !important; justify-content: flex-start; }
  .cl-groups { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 560px) { .cl-groups { grid-template-columns: 1fr; } .cl-metrics { grid-template-columns: repeat(2, minmax(0, 1fr)); } .cl-queue { grid-template-columns: 1fr; } }
@media (prefers-reduced-motion: reduce) { .cl-live-panel, .cl-data, .cl-ev.fresh, .cl-dot.on, .cl-now .cl-ava.pulse, .cl-teacher.speaking .cl-ava, .cl-grep > .cl-ava.st-speaking, .cl-hand { animation: none !important; } }
/* 控制栏：窄于 1600px 时状态徽标单独成行，按钮一行；网格列不被内容撑宽 */
.cl > * { min-width: 0; }
@media (max-width: 1600px) { .cl-top.stage-top { flex-wrap: wrap; row-gap: 6px; } .cl-top #st-badges { order: 2; flex-basis: 100%; } .cl-top .cl-title { margin-right: auto; } }
.cl-act { display: grid; grid-template-columns: 1fr 1fr; column-gap: 14px; }
.cl-act-h { grid-column: 1 / -1; }
.cl-m { padding: 6px 10px; } .cl-m b { font-size: calc(18px * var(--fs)); }
/* 播放器条一行 */
.cl { grid-template-rows: auto auto minmax(0, .9fr) minmax(0, 1.1fr); }
.cl-rail { gap: 2px; padding: 8px 8px 6px; overflow: hidden; }
.cl-rail button { padding: 6px 10px; }
.cl-legend { gap: 1px; padding-top: 6px; }