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var(--green-50);text-underline-offset:3px;cursor:help}.glossary-highlight:hover{-webkit-text-decoration-color:var(--accent-green);text-decoration-color:var(--accent-green);color:var(--accent-green)}.glossary-tooltip-popup{background:var(--bg-input);border:1px solid var(--accent-green);color:var(--text-primary);white-space:normal;z-index:9999;pointer-events:none;box-shadow:0 4px 20px var(--shadow-dropdown);border-radius:8px;padding:10px 14px;font-size:12px;font-weight:400;line-height:1.5;animation:.15s glossaryFadeIn}.glossary-tooltip-arrow{border:5px solid #0000;border-top-color:var(--accent-green);width:0;height:0;position:absolute;bottom:-6px;transform:translate(-50%)}@keyframes glossaryFadeIn{0%{opacity:0;transform:translateY(calc(4px - 100%))}to{opacity:1;transform:translateY(-100%)}}.past-papers-filters{flex-wrap:wrap;gap:12px;margin-bottom:24px;display:flex}.past-papers-select{background:var(--bg-input);border:1px solid 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var(--green-light-30)}.stepper-line{background:var(--border-primary);flex:1;width:2px;min-height:20px;margin:4px 0;transition:background .3s}.stepper-line.filled{background:var(--accent-green)}.stepper-content{flex:1;min-width:0;padding-bottom:8px}.stepper-step-header{justify-content:space-between;align-items:center;min-height:36px;padding:6px 0;display:flex}.stepper-step-title{color:var(--text-primary);margin:0;font-size:17px;font-weight:700;transition:color .2s}.stepper-step.completed .stepper-step-header{cursor:pointer}.stepper-step.completed .stepper-step-title{color:var(--text-tertiary)}.stepper-step.completed:hover .stepper-step-title{color:var(--text-secondary)}.stepper-expand-hint{color:var(--text-muted);opacity:0;font-size:11px;font-weight:500;transition:opacity .2s}.stepper-step.completed:hover .stepper-expand-hint{opacity:1}.stepper-step-body{padding:16px 0 24px;animation:.35s stepperFadeIn}@keyframes stepperFadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}.stepper-action{border-top:1px solid var(--border-primary);margin-top:24px;padding-top:20px}.stepper-continue-btn{background:linear-gradient(135deg,var(--accent-green),var(--accent-green-light));color:#fff;cursor:pointer;border:none;border-radius:8px;align-items:center;gap:8px;padding:12px 24px;font-family:inherit;font-size:14px;font-weight:600;transition:all .2s;display:inline-flex}.stepper-continue-btn:hover{box-shadow:0 4px 16px var(--green-30);transform:translateY(-1px)}.stepper-continue-btn.complete{background:linear-gradient(135deg,var(--accent-green),var(--accent-green-dark))}.stepper-complete-message{color:var(--accent-green-light);background:var(--green-light-8);border:1px solid var(--green-light-20);border-radius:8px;align-items:center;gap:10px;padding:12px 16px;font-size:14px;font-weight:600;display:flex}.theme-toggle-btn{border:1px solid var(--border-primary);color:var(--text-muted);cursor:pointer;background:0 0;border-radius:6px;flex-shrink:0;justify-content:center;align-items:center;width:28px;height:28px;font-size:14px;transition:all .15s;display:flex}.theme-toggle-btn:hover{background:var(--green-10);border-color:var(--accent-green);color:var(--accent-green)}.tab-lock-icon{opacity:.6;margin-left:2px;font-size:10px}.tab-item.tab-locked{opacity:.7}.paywall-overlay{justify-content:center;align-items:center;min-height:400px;padding:40px 20px;display:flex}.paywall-card{text-align:center;background:var(--bg-card);border:1px solid var(--border-primary);border-radius:16px;max-width:420px;padding:40px 32px}.paywall-icon{margin-bottom:16px;font-size:48px}.paywall-title{color:var(--text-primary);margin:0 0 12px;font-size:22px;font-weight:800}.paywall-description{color:var(--text-muted-alt);margin:0 0 24px;font-size:14px;line-height:1.6}.paywall-features{text-align:left;margin-bottom:28px}.paywall-feature-item{color:var(--text-secondary);align-items:center;gap:10px;padding:8px 0;font-size:14px;display:flex}.paywall-check{color:var(--accent-green);font-size:16px;font-weight:700}.paywall-btn{background:linear-gradient(135deg,var(--accent-green),var(--accent-green-light));color:#fff;cursor:pointer;border:none;border-radius:10px;padding:12px 32px;font-family:inherit;font-size:15px;font-weight:700;text-decoration:none;transition:transform .15s,box-shadow .15s;display:inline-block}.paywall-btn:hover{transform:translateY(-1px);box-shadow:0 4px 12px #0003}.paywall-btn:disabled{opacity:.6;cursor:not-allowed;transform:none}.paywall-note{color:var(--text-muted);margin:16px 0 0;font-size:12px}[data-theme=light] .concept-box,[data-theme=light] .quiz-question,[data-theme=light] .mistake-card,[data-theme=light] .flashcard-front,[data-theme=light] .past-paper-card,[data-theme=light] .glossary-term,[data-theme=light] .bookmark-item,[data-theme=light] .command-word-card,[data-theme=light] .auth-card,[data-theme=light] .auth-dropdown,[data-theme=light] .modal-box,[data-theme=light] .diagram-container,[data-theme=light] .tutor-quick-btn,[data-theme=light] .flashcard-nav-btn,[data-theme=light] .resource-search{box-shadow:var(--card-shadow)}.practice-tab{padding:24px 0}.practice-header{margin-bottom:24px}.practice-title{color:var(--text-primary);margin-bottom:6px;font-size:22px;font-weight:700}.practice-subtitle{color:var(--text-muted);font-size:14px;line-height:1.5}.practice-filters{flex-wrap:wrap;gap:8px;margin-bottom:20px;display:flex}.practice-filter-btn{border:1px solid var(--border-primary);background:var(--bg-card);color:var(--text-secondary);cursor:pointer;border-radius:20px;align-items:center;gap:6px;padding:7px 14px;font-size:13px;font-weight:500;transition:all .2s;display:flex}.practice-filter-btn:hover{border-color:var(--accent-green);color:var(--accent-green)}.practice-filter-btn.active{background:var(--green-15);border-color:var(--accent-green);color:var(--accent-green)}.practice-filter-count{background:var(--bg-section);border-radius:10px;padding:1px 7px;font-size:11px;font-weight:600}.practice-filter-btn.active .practice-filter-count{background:var(--green-25)}.practice-questions-list{flex-direction:column;gap:16px;display:flex}.practice-question-card{background:var(--card-bg,var(--bg-card));border:1px solid var(--card-border,var(--border-primary));border-left:4px solid var(--card-border,var(--border-primary));border-radius:12px;padding:20px;transition:box-shadow .2s}.practice-question-card:hover{box-shadow:0 2px 8px #0000000f}.practice-question-top{align-items:center;gap:8px;margin-bottom:12px;display:flex}.practice-marks-badge{color:#fff;text-transform:uppercase;letter-spacing:.3px;border-radius:12px;padding:3px 10px;font-size:11px;font-weight:700}.practice-command-badge{color:var(--text-muted);background:var(--bg-section);border-radius:12px;padding:3px 10px;font-size:11px;font-weight:600}.practice-question-text{color:var(--text-primary);margin-bottom:14px;font-size:15px;font-weight:500;line-height:1.6}.practice-guidance-toggle{border:1px solid var(--border-primary);background:var(--bg-input);color:var(--text-tertiary);cursor:pointer;border-radius:8px;align-items:center;gap:6px;padding:6px 14px;font-size:13px;font-weight:500;transition:all .2s;display:flex}.practice-guidance-toggle:hover{color:var(--accent-green);border-color:var(--accent-green)}.practice-guidance-toggle.expanded{color:var(--accent-green);border-color:var(--accent-green);background:var(--green-5)}.practice-guidance-icon{font-size:10px}.practice-guidance{background:var(--practice-guidance-bg);border:1px solid var(--border-primary);border-radius:10px;margin-top:14px;padding:16px}.practice-guidance-label{text-transform:uppercase;letter-spacing:.5px;color:var(--accent-green);margin-bottom:10px;font-size:12px;font-weight:700}.practice-guidance-text{color:var(--text-secondary);font-size:14px;line-height:1.65}.practice-guidance-text p{margin-bottom:8px}.practice-guidance-text p:last-child{margin-bottom:0}@media (max-width:768px){.stepper-rail{width:28px}.stepper-node{width:26px;height:26px;font-size:11px}.stepper-step{gap:10px}.stepper-step-title{font-size:15px}.practice-tab{padding:16px 0}.practice-title{font-size:18px}.practice-question-card{padding:16px}.practice-question-text{font-size:14px}}