/* Mobile lesson: video first, readable bilingual transcript below. */
:root{--orange:#ed7c32;--ink:#262b29}
@media(max-width:800px){
body{background:#f4f4f4}header{height:52px;padding:0 16px;gap:14px}.brand{font-size:18px}.brand span{font-size:12px}.help-button{display:none}nav{margin-left:auto}.nav{font-size:12px}
main{padding:0;max-width:none}.intro{display:flex;margin:0;padding:8px 12px;background:white;justify-content:flex-end}.intro>div:first-child{display:none}.intro-actions{flex-direction:row;gap:8px}.intro-actions button{padding:7px 12px;font-size:11px}
.workspace{display:flex;flex-direction:column;gap:0;height:calc(100dvh - 98px);min-height:590px}.video-panel{position:static;flex:none;width:100%;padding:0;background:white}.screen{width:100%;border-radius:0;aspect-ratio:16/9;max-height:36dvh}.video-info{padding:8px 16px 4px}.lesson-labels,.video-info p,.progress-line,progress,.tip,.now-playing,.bottom-settings{display:none}.video-info h2{font-size:13px;margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.controls{border:0;border-radius:0;padding:6px 12px;gap:8px}.controls button{font-size:12px;padding:8px 0}.controls #play{background:var(--orange)}.controls select{font-size:12px;max-width:90px;padding:7px}.options{margin:0;padding:3px 12px 8px;gap:6px;justify-content:space-between;flex-wrap:nowrap}.options button{font-size:11px;padding:7px 8px;white-space:nowrap}.options button[aria-pressed=true]{background:#fff0df;color:#b45b21;border-color:#ed7c32}#status{padding:0 16px;font-size:10px;min-height:0;line-height:1.6}
.transcript{display:flex;flex-direction:column;flex:1;min-height:0;width:100%;border:0;border-radius:20px 20px 0 0;background:#f5f5f5;box-shadow:0 -3px 14px #00000009}.transcript-top{padding:8px 16px 4px}.transcript-top h2{font-size:12px;margin:0}.transcript-top>div{display:flex;gap:8px;align-items:center}.transcript-top span{font-size:9px}.tabs{background:#f5f5f5;border:0}.tabs button{font-size:17px;padding:12px 0;color:#969696;border-bottom-width:3px}.tabs .selected{color:#252525;border-color:var(--orange)}.search-bar{padding:3px 16px;background:#fafafa}.search-bar input{font-size:12px;padding:5px 0}
#sentences{position:relative;flex:1;min-height:0;height:auto;max-height:none;overscroll-behavior:contain}.sentence,.sentence.current{padding:18px 20px;border-left:0;border-bottom:1px solid #e5e5e5;background:#f5f5f5}.sentence.current{background:#fff0be}.meta{font-size:12px;margin-bottom:9px;color:#999}.sentence.current .meta{color:#b57b47}.english{font-size:22px;line-height:1.7;color:#222}.chinese{font-size:16px;line-height:1.7;color:#707070;margin-top:10px}.word.phrase{color:#008547;background:#e1f1d9;border-bottom:3px solid #9bd992;border-radius:4px}.word.saved-word{background:#ffe3c9;color:#d76b25;border-bottom:3px solid #eda66f}.star{font-size:22px}.blank{font-size:20px}.transcript-footer{padding:7px;font-size:9px;background:#fafafa}footer{display:none}
}
@media(max-width:360px){.options button{font-size:10px;padding:6px}.english{font-size:20px}.chinese{font-size:15px}}
@media(max-width:800px) and (orientation:landscape){.workspace{height:auto;min-height:0}.screen{max-height:none;width:70%;margin:auto}#sentences{height:350px;flex:none}.transcript{flex:none}}
.learning-dock{margin-top:20px;position:relative;background:white;border:1px solid #e7ebe7;border-radius:16px;padding:10px}.learning-dock .options{margin:8px 0 0}.more-tools summary{cursor:pointer;font-size:12px;list-style:none;padding:8px}.tool-menu{position:absolute;right:10px;bottom:100%;display:grid;gap:4px;background:white;border:1px solid #e4e9e4;border-radius:14px;box-shadow:0 8px 32px #0002;padding:12px;z-index:10;min-width:160px}.tool-menu button{padding:10px;text-align:left;font-size:13px}
@media(max-width:800px){
body{background:#fafbfa;color:#202923}header{height:48px}.intro{display:none}main{padding:0}.workspace{height:calc(100dvh - 158px - env(safe-area-inset-bottom));min-height:380px;gap:0}.video-panel{padding:0}.screen{max-height:32dvh;border-radius:0}.video-info,.now-playing,.bottom-settings,#status,.tip,.progress-line,progress{display:none}.transcript{border-radius:0;background:#fafbfa;box-shadow:none}.transcript-top,.search-bar,.transcript-footer{display:none}.tabs{background:white}.tabs button{padding:9px 0;font-size:14px}.tabs .selected{color:#246849;border-color:#246849}#sentences{padding:10px;scrollbar-width:thin}.sentence,.sentence.current{border:1px solid #e6eae6;border-radius:13px;background:white;margin-bottom:10px;padding:14px 16px}.sentence.current{background:#edf5f0;border-left:4px solid #2b7254;padding-left:13px}.meta{font-size:11px;color:#a1aca5;margin-bottom:8px}.sentence.current .meta{color:#8ca497}.meta .number{display:none}.english{font-size:20px;line-height:1.65;font-weight:500;color:#202823}.chinese{font-size:15px;color:#818b84;margin-top:10px;line-height:1.6}.word.phrase{background:none;border-bottom:0;color:inherit}.word.saved-word{background:#f4e6d9;border-bottom:0}.star{font-size:18px}.sentence.current .star{color:#2b7254}
.learning-dock{position:fixed;bottom:0;left:0;right:0;z-index:5;border:0;border-top:1px solid #e8ece8;border-radius:0;margin:0;padding:8px 10px calc(8px + env(safe-area-inset-bottom));height:calc(110px + env(safe-area-inset-bottom));display:grid;grid-template-columns:1fr 60px;gap:2px 4px;background:#fffffff5;backdrop-filter:blur(10px)}.learning-dock .controls{grid-column:1/-1;padding:0;border:0;gap:10px}.learning-dock .controls button{padding:10px 0;font-size:12px}.learning-dock .controls #play{border-radius:24px;background:#376d56;max-width:100px}.learning-dock .controls select{background:transparent;color:#4b6053}.learning-dock .options{margin:0;padding:0;gap:3px;justify-content:space-around}.learning-dock .options button{border:0;border-radius:6px;font-size:10px;padding:8px 4px}.learning-dock .options button[aria-pressed=true]{background:#eaf4ed;color:#246849}.more-tools{align-self:center}.more-tools summary{padding:8px 0;text-align:center;font-size:11px}.tool-menu{bottom:calc(100% + 8px);right:10px}footer{display:none}
}
@media(max-width:800px) and (orientation:landscape){.workspace{height:auto;min-height:0;padding-bottom:120px}.screen{width:65%;max-height:none}#sentences{height:320px;flex:none}}
@media(max-width:800px){.sentence.current{background:#fff1be;border-left-color:#ed953e}.sentence.current .meta{color:#ad7c45}.sentence.current .star{color:#d18a31}}
.tool-menu .bottom-settings{display:flex;flex-direction:column;align-items:flex-start;gap:8px;border-bottom:1px solid #eee;padding-bottom:10px}.tool-menu .bottom-settings label{font-size:12px;color:#55645b}
.compact-dock{display:grid;grid-template-columns:repeat(4,1fr) 60px repeat(4,1fr);align-items:center;gap:4px;padding:10px 16px;max-width:850px;margin:20px auto 0}.compact-dock .dock-button{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:4px;padding:6px 0;min-width:0;border-radius:8px}.compact-dock .dock-icon{font-size:25px;line-height:28px;display:flex;align-items:center;justify-content:center;height:28px}.compact-dock .dock-label{display:block;font-size:11px;line-height:15px;white-space:nowrap;color:#566057}.compact-dock #play{width:56px;height:56px;border-radius:50%;background:#4747c6;color:white;justify-self:center;gap:0}.compact-dock #play .dock-label{position:absolute;width:1px;height:1px;overflow:hidden;clip-path:inset(50%)}.compact-dock #play .dock-icon{font-size:27px}.compact-dock .dock-button[aria-pressed=true]{color:#4444be;background:#eeeeff}.compact-dock .dock-speed{margin:0;display:flex;flex-direction:column;align-items:center;gap:4px}.compact-dock .dock-speed select{appearance:none;text-align:center;border:0;background:none;font-size:20px;padding:3px 0;color:#303731;width:100%;height:28px;cursor:pointer}.compact-dock .more-tools summary{display:flex;flex-direction:column;align-items:center;gap:4px;padding:6px 0}.compact-dock #prev .dock-label,.compact-dock #next .dock-label{visibility:hidden}.compact-dock .tool-menu button[aria-pressed=true]{background:#eeeeff;color:#4444be;border-radius:6px}
@media(max-width:800px){.workspace{height:calc(100dvh - 128px - env(safe-area-inset-bottom))}.compact-dock{height:calc(80px + env(safe-area-inset-bottom));max-width:none;margin:0;gap:1px;grid-template-columns:repeat(4,minmax(0,1fr)) 52px repeat(4,minmax(0,1fr));padding:8px 8px calc(8px + env(safe-area-inset-bottom));background:#fffffff5}.compact-dock #play{width:50px;height:50px}.compact-dock .dock-icon{font-size:22px}.compact-dock .dock-label{font-size:10px}.compact-dock .dock-speed select{font-size:18px}}