/* Study controls only. Lesson rows retain their existing layout. */
.study-header-card{background:var(--surface);border:1px solid var(--line);border-radius:14px;overflow:hidden}
.study-heading{display:flex;justify-content:space-between;align-items:center;gap:24px;padding:18px 20px}.study-heading-copy{flex:1;min-width:0}.study-heading-copy .eyebrow{margin:0 0 5px;color:var(--muted);font-size:.76rem}.study-heading h1{margin:0;font-size:clamp(1.15rem,1.8vw,1.45rem);font-weight:650;line-height:1.45;overflow-wrap:anywhere}
.study-header-card .study-progress-row{display:grid;gap:6px;flex:0 0 160px;padding:0;margin:0;border:0;font-size:.78rem;color:var(--muted)}.study-header-card .study-progress-row progress{width:100%;height:6px;max-width:none}
.study-listening-bar{display:flex;align-items:end;justify-content:space-between;gap:16px;padding:14px 20px 10px;border-top:1px solid var(--dm-line,#eef0f3)}.study-speed-repeat{display:flex;gap:10px}.study-speed-repeat label,.study-option-fields label{display:grid;gap:5px;color:var(--dm-muted,#475467);font-size:.8rem;font-weight:600;min-width:110px}.study-speed-repeat select,.study-option-fields select{width:100%;min-height:40px;padding:6px 10px;border:1px solid var(--dm-line,#d0d5dd);border-radius:8px;background:var(--dm-surface,white);color:var(--text);font-size:.88rem}.study-speed-repeat label:last-child{min-width:165px}.study-playback-actions{display:flex;gap:8px;flex-wrap:wrap}.study-playback-actions .btn{min-height:40px;font-size:.85rem;padding:7px 12px;white-space:nowrap}
.study-now-playing{display:flex;align-items:baseline;gap:10px;margin:0;padding:0 20px 14px;font-size:.83rem;line-height:1.5;color:var(--muted)}.study-now-playing>span{flex-shrink:0;font-size:.75rem}#view-study #nowPlayingText{display:block;max-width:none;min-width:0;white-space:normal;overflow-wrap:anywhere;font-size:.86rem;font-weight:500;color:var(--dm-muted,#475467)}
.study-options{border-top:1px solid var(--line)}.study-options>summary{padding:11px 20px;cursor:pointer;min-height:42px;font-size:.83rem;font-weight:600;color:var(--dm-muted,#475467)}.study-options>summary span{font-weight:400;font-size:.76rem;color:var(--muted);margin-left:7px}.study-options-body{padding:4px 20px 16px}.study-option-fields{display:grid;grid-template-columns:2fr 1fr 1fr;gap:12px}.study-option-fields label{min-width:0}.study-option-fields #voiceSelect{max-width:none}
.study-appearance{display:flex;align-items:center;gap:10px;flex-wrap:wrap;margin-top:16px}.study-appearance>span{font-size:.8rem;color:var(--dm-muted,#475467)}.study-appearance .toggle-chip{min-height:38px;border-radius:8px;font-size:.82rem;font-weight:500}.study-appearance .btn{min-height:38px;font-size:.82rem}.study-setting-help{font-size:.76rem;color:var(--muted);margin:8px 0 14px;line-height:1.5}
.study-sharing{display:flex;align-items:center;justify-content:space-between;gap:16px;border-top:1px solid var(--dm-line,#eef0f3);padding:12px 0}.study-sharing .publish-wrap{justify-items:start}.study-sharing .switch-row{font-size:.82rem;font-weight:500}.study-sharing .btn{font-size:.82rem}
.study-information{border-top:1px solid var(--dm-line,#eef0f3)}.study-information summary,.study-options .video-details summary{font-size:.82rem;font-weight:500;cursor:pointer;padding:10px 0;color:var(--dm-muted,#475467)}.study-information-body{font-size:.84rem;color:var(--dm-muted,#475467);line-height:1.6;padding-bottom:10px}.study-information-body>div{display:flex;gap:16px;flex-wrap:wrap;color:var(--muted);font-size:.78rem}.study-information-body p{margin:8px 0 0}.study-options .video-details{padding:0;border-top:1px solid var(--dm-line,#eef0f3);border-bottom:0}.study-options .video-frame-wrap{max-width:720px;margin:8px auto 0}
.study-header-notice:empty{display:none}.study-header-notice{margin:8px 0;font-size:.82rem}.study-tabs{margin:12px 0 10px;padding:5px 0;gap:6px}.study-tabs .study-tab{display:flex;justify-content:center;align-items:center;gap:7px;border-radius:8px;font-size:.92rem;min-height:44px;font-weight:600}.study-tab-count{font-size:.76rem;font-weight:500;min-width:20px;line-height:1.5;padding:1px 5px;border-radius:5px;background:var(--dm-soft,#eef1f5);color:var(--dm-muted,#667085)}.study-tab.active .study-tab-count{background:var(--dm-glass,#ffffff35);color:inherit}
.study-toolbar.study-expression-tools{display:grid;gap:10px;padding:12px 14px;background:var(--surface);border:1px solid var(--line);border-radius:10px;align-items:stretch}.study-expression-filters{display:flex;align-items:center;gap:8px;flex-wrap:wrap}.study-expression-filters .toolbar-search{flex:1 1 240px;min-width:160px}.study-expression-filters select{min-width:120px;max-width:200px;min-height:40px;font-size:.83rem;padding:6px 8px}.study-expression-filters input{min-height:40px;font-size:.9rem}.study-expression-filters .text-btn{margin-left:auto;font-size:.82rem}.study-expression-selection{display:flex;align-items:center;gap:8px;flex-wrap:wrap;padding-top:9px;border-top:1px solid var(--dm-line,#eef0f3)}.study-expression-selection .btn{min-height:38px;font-size:.82rem;padding:6px 10px}.study-expression-selection .text-btn{font-size:.82rem}.study-expression-selection #playSelectedBtn{margin-left:auto}
@media(max-width:760px){.study-heading{padding:14px 16px;gap:12px;align-items:flex-start}.study-header-card .study-progress-row{flex-basis:125px}.study-listening-bar{padding:12px 16px 10px;flex-wrap:wrap;gap:12px}.study-speed-repeat{flex:1}.study-speed-repeat label{flex:1;min-width:0}.study-speed-repeat label:last-child{min-width:0;flex:1.5}.study-playback-actions{justify-content:flex-start;flex:1 1 100%}.study-playback-actions .btn{flex:1}.study-now-playing{padding:0 16px 12px}.study-options>summary{padding:10px 16px}.study-options-body{padding:4px 16px 14px}.study-option-fields{grid-template-columns:1fr 1fr}.study-option-fields label:first-child{grid-column:1/-1}.study-expression-filters .toolbar-search{flex-basis:100%}.study-expression-filters select{flex:1;min-width:100px;max-width:none}.study-expression-selection #playSelectedBtn{margin-left:0;flex:1 1 100%}.study-expression-selection .btn{min-height:42px}.study-sharing{flex-wrap:wrap}}
@media(max-width:480px){.study-heading{display:block}.study-header-card .study-progress-row{display:flex;align-items:center;gap:10px;margin-top:10px}.study-header-card .study-progress-row label{white-space:nowrap}.study-header-card .study-progress-row progress{flex:1;min-width:50px}.study-options>summary span{display:block;margin:3px 0 0 18px}.study-expression-filters select{font-size:.78rem}.study-tabs .study-tab{padding:9px 8px;font-size:.86rem}.study-now-playing{gap:8px}.study-expression-selection .text-btn{min-height:40px}}