.topic-row{width:100%;background:transparent;border-right:0;border-bottom:0;border-left:0;text-align:left;color:inherit}.topic-row:hover{background:#f6f8f6}.topic-workspace{min-width:0;background:white;border:1px solid #dde3df;border-radius:7px}.topic-workspace-head{min-height:76px;padding:16px 18px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid #e4e8e5}.topic-workspace-head h2{margin:2px 0;font-size:20px}.tab-body{min-height:360px;padding:20px}.reading-pane pre,.transcription-editor pre,.evaluation-panel pre{white-space:pre-wrap;overflow-wrap:anywhere;background:#f6f8f6;border:1px solid #e3e8e4;border-radius:5px;padding:14px}.topic-summary{color:#5f6e67}.workflow-block{display:flex;flex-direction:column;gap:16px}.workflow-status{display:flex;align-items:center;justify-content:space-between;padding:12px 14px;background:#f3f6f4;border-left:3px solid #23815c}.workflow-actions,.editor-actions,.quiz-actions,.recorder-actions{display:flex;align-items:center;gap:10px;flex-wrap:wrap}.recorder{display:grid;justify-items:center;gap:12px;padding:28px;border:1px dashed #9fb2a8;border-radius:6px;background:#f8faf8}.recorder-elapsed{font-size:28px;font-variant-numeric:tabular-nums;margin:0}.danger{border:0;border-radius:5px;padding:10px 16px;background:#b93632;color:white;font-weight:650}.success-banner{padding:10px 12px;border-left:3px solid #18794e;background:#edf8f1;color:#145c3d}.questions{display:flex;flex-direction:column;gap:18px;padding-left:22px}.questions li{padding:14px;border:1px solid #e0e5e1;border-radius:6px}.questions label{flex-direction:row;align-items:center;font-weight:400;padding:7px 0}.questions input[type=radio]{width:18px}.timeline ul{list-style:none;padding:0}.timeline li{display:grid;grid-template-columns:minmax(180px,1fr) minmax(150px,.8fr) 70px;gap:12px;padding:11px 0;border-bottom:1px solid #e8ece9}.error{color:#a52f2b}.evaluation-panel header{display:flex;align-items:center;justify-content:space-between}.evaluation-panel header .score{font-size:24px;font-weight:700}.transcription-editor{display:grid;grid-template-columns:1fr 1fr;gap:14px;min-width:0}.transcription-editor .editor-actions{grid-column:1/-1}
.file-upload-button{display:inline-flex;align-items:center;justify-content:center;cursor:pointer}.file-upload-button input{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0 0 0 0)}.feynman-explanation-workspace,.explanation-detail,.explanation-files{min-width:0}.explanation-layout{display:grid;grid-template-columns:minmax(220px,280px) minmax(0,1fr);gap:18px;margin-top:18px}.explanation-files{border-right:1px solid #dde3df;padding-right:18px}.explanation-files h3,.explanation-source h3{font-size:16px;margin:0 0 12px}.explanation-file-list{display:flex;flex-direction:column;gap:6px}.explanation-file-row{width:100%;display:grid;grid-template-columns:minmax(0,1fr) auto;gap:4px 8px;text-align:left;padding:10px;border:1px solid transparent;border-radius:5px;background:#f6f8f6;color:#24322b}.explanation-file-row:hover{background:#eef3ef}.explanation-file-row.selected{border-color:#23815c;background:#edf7f1}.file-name{min-width:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;font-weight:650}.file-meta{font-size:12px;color:#65736c}.status-chip{grid-column:2;grid-row:1/3;align-self:center;font-size:12px;color:#315d4b}.explanation-detail audio{display:block;width:100%;max-width:100%}.processing-overlay{position:fixed;inset:0;z-index:1200;display:grid;place-items:center;padding:16px;background:rgba(25,32,29,.45)}.processing-dialog{width:min(420px,100%);padding:24px;background:white;border:1px solid #cfd8d2;border-radius:7px;box-shadow:0 16px 42px rgba(20,31,26,.2);text-align:center}.processing-dialog h3{font-size:18px;margin:10px 0 6px}.processing-dialog p{margin:0 0 8px}.processing-dialog small{color:#65736c}.processing-spinner{width:28px;height:28px;margin:auto;border:3px solid #d7dfda;border-top-color:#23815c;border-radius:50%;animation:processing-spin .8s linear infinite}.warning-banner{padding:10px 12px;border-left:3px solid #b9770e;background:#fff7e8;color:#69430a}@keyframes processing-spin{to{transform:rotate(360deg)}}
@media(max-width:760px){.explanation-layout{grid-template-columns:1fr}.explanation-files{border-right:0;border-bottom:1px solid #dde3df;padding:0 0 14px}.transcription-editor{grid-template-columns:1fr}.transcription-editor .editor-actions{grid-column:1}.recorder{padding:18px}.processing-dialog{padding:20px}.explanation-file-row{grid-template-columns:minmax(0,1fr) auto}}
@media(max-width:820px){.content-grid,.stats-grid,.transcription-editor{grid-template-columns:1fr}.course-summary{flex-wrap:wrap}.topic-workspace .tabs{overflow-x:auto}.topic-workspace .tabs button{flex:1;min-width:72px}.tab-body{padding:14px;min-height:320px}.timeline li{grid-template-columns:1fr 90px}.timeline .score{grid-column:2}.transcription-editor .editor-actions{grid-column:auto}}
.cornell-head{display:flex;align-items:center;justify-content:space-between;gap:16px}.cornell-head h3{margin:2px 0}.cornell-main{display:grid;grid-template-columns:minmax(180px,1fr) minmax(0,2fr);gap:14px}.cornell-workspace label{min-width:0}.cornell-workspace label>span{font-weight:650}.cornell-workspace textarea{width:100%;box-sizing:border-box;resize:vertical}.cornell-submit{justify-content:flex-end}@media(max-width:760px){.cornell-main{grid-template-columns:1fr}.cornell-head{align-items:flex-start;flex-direction:column}.cornell-submit{justify-content:stretch}.cornell-submit button{width:100%}}
.self-test-overview-row{display:flex;gap:12px;flex-wrap:nowrap;overflow-x:auto}.self-test-overview-row>.card{flex:0 0 220px;min-width:220px}
.self-test-feedback-block{margin:0;white-space:pre-wrap;overflow-wrap:anywhere;word-break:break-word;background:#f6f8f6;border:1px solid #e3e8e4;border-radius:8px;padding:14px}
.self-test-question-list{display:flex;flex-direction:column;gap:14px}.self-test-question-card{display:flex;flex-direction:column;gap:12px;padding:16px;border:1px solid #dde3df;border-radius:10px;background:#fbfcfb}.self-test-question-head{display:flex;align-items:center;justify-content:space-between;gap:12px}.self-test-question-score{font-size:13px;font-weight:650;color:#1f6b4b;background:#edf7f1;border-radius:999px;padding:5px 10px}.self-test-question-prompt{margin:0;font-weight:650;color:#24322b}.self-test-question-meta{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:12px}.self-test-question-meta span,.self-test-question-card>div>span{display:block;margin-bottom:6px;font-size:12px;color:#5f6e67}.self-test-question-points{margin:0;color:#1f6b4b}.self-test-question-points.missing{color:#8c5a09}
.self-test-progress-dialog{width:min(560px,100%);padding:28px;border-radius:14px;text-align:left;background:linear-gradient(180deg,#fff 0%,#f8fbf9 100%)}.self-test-progress-spinner-shell{display:grid;place-items:center;width:56px;height:56px;margin:0 auto 8px;border-radius:50%;background:#edf7f1;border:1px solid #d7e8df}.self-test-progress-lead{display:flex;flex-direction:column;gap:8px;margin-bottom:16px;text-align:center}.self-test-progress-lead h3{margin:0;font-size:20px}.self-test-progress-lead p{margin:0;color:#4c5c55}.self-test-progress-list{list-style:none;padding:0;margin:0;display:flex;flex-direction:column;gap:10px}.self-test-progress-item{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:12px 14px;border:1px solid #dfe7e2;border-radius:10px;background:white}.self-test-progress-item .prompt{margin:0;font-weight:650}.self-test-progress-state{display:inline-flex;align-items:center;justify-content:center;min-width:72px;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:650}.self-test-progress-state.done{background:#edf7f1;color:#1f6b4b}.self-test-progress-state.active{background:#eef4ff;color:#2956b2}.self-test-progress-state.pending{background:#f3f5f4;color:#65736c}