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18px;background:var(--tint);border:1px solid var(--border);border-radius:10px;margin-bottom:24px;flex-wrap:wrap}.admin-audio-time{font-family:monospace;font-size:13px;font-weight:650;color:var(--ink)}.admin-audio-scrubber{flex:1;min-width:140px;accent-color:var(--accent);cursor:pointer}.tag-hint{font-size:12px;color:var(--secondary-text)}.admin-tab-content{display:grid;gap:20px}.form-group{display:flex;flex-direction:column;gap:6px}.form-group label{font-size:13.5px;font-weight:600;color:var(--ink)}.form-row{display:flex;gap:16px;flex-wrap:wrap}.flex-1{flex:1;min-width:140px}.flex-2{flex:2;min-width:220px}.form-input,.form-textarea{width:100%;border:1px solid var(--border);background:var(--paper);color:var(--ink);border-radius:8px;padding:10px 14px;font-size:15px;transition:border-color .2s,outline .2s}.form-input:focus,.form-textarea:focus{outline:2px solid var(--accent);border-color:transparent}.help-text{font-size:12px;color:var(--secondary-text)}.section-toolbar{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:12px;margin-top:10px;margin-bottom:8px}.admin-section-block,.admin-quiz-card{border:1px solid var(--border);border-radius:10px;padding:18px;background:var(--tint);display:grid;gap:14px}.admin-section-header,.admin-quiz-header{display:flex;justify-content:space-between;align-items:center}.section-badge,.quiz-badge{font-size:12px;font-weight:700;color:var(--accent);background:var(--paper);padding:4px 10px;border-radius:6px;border:1px solid var(--border)}.admin-section-actions{display:flex;align-items:center;gap:8px}.admin-options-container{display:grid;gap:10px;margin-top:6px}.options-heading{font-size:13.5px;font-weight:600}.admin-option-row{display:flex;align-items:center;gap:12px;padding:12px;background:var(--paper);border:1px solid var(--border);border-radius:8px;transition:border-color .2s}.admin-option-row.correct{border-color:var(--accent);background:var(--highlight)}.radio-label{display:flex;align-items:center;gap:6px;cursor:pointer;font-weight:700;flex-shrink:0;min-width:44px}.opt-letter{font-size:14px}.option-inputs{display:flex;flex-direction:column;gap:6px;flex:1}.option-label-input{font-weight:600}.option-exp-input{font-size:13px;color:var(--secondary-text)}.admin-course-lessons-table{display:grid;gap:10px;margin-top:14px}.admin-course-lesson-row{display:flex;align-items:center;gap:14px;padding:12px 16px;background:var(--tint);border:1px solid var(--border);border-radius:8px}.row-number{font-weight:700;color:var(--secondary-text);font-size:14px}.row-content{flex:1;display:flex;flex-direction:column;gap:2px}.row-actions{display:flex;align-items:center;gap:8px}.admin-placeholder-card{padding:60px 20px;text-align:center;display:flex;flex-direction:column;align-items:center;gap:14px;background:var(--paper);border:1px dashed var(--border);border-radius:12px;color:var(--secondary-text)}.admin-placeholder-card h2{color:var(--ink)}.button-small{min-height:38px;padding:6px 14px;font-size:13px;gap:8px}.button-outline{background:var(--paper);color:var(--ink);border:1px solid var(--border)}.button-danger{background:#d32f2f;color:#fff;border-color:#d32f2f}.button-danger:hover{background:#b71c1c}.button-danger-light{background:var(--paper);color:#d32f2f;border:1px solid #ffcdd2}.button-danger-light:hover{background:#ffebee}.icon-btn{display:grid;place-items:center;width:36px;height:36px;border-radius:6px;border:1px solid var(--border);background:var(--paper);color:var(--ink);cursor:pointer}.icon-btn:hover{background:var(--tint)}.icon-btn-danger{color:#d32f2f;border-color:#ffcdd2}.icon-btn-danger:hover{background:#ffebee}.full-width{width:100%}.admin-tab,.admin-editor-card,.form-group,.admin-quiz-card,.admin-section-block{scroll-margin-top:100px}@media(max-width:900px){.admin-tree.mobile-hidden{display:none!important}.mobile-only{display:inline-flex!important}}@media(min-width:901px){.mobile-only{display:none!important}}