*,:before,:after{box-sizing:border-box}:root{--primary:#38bdf8;--primary-2:#a855f7;--primary-dark:#0ea5e9;--success:#34d399;--danger:#f87171;--warning:#fbbf24;--bg:#0a0e1a;--surface:#131a2b;--surface-2:#1a2236;--border:#94a3b829;--text:#e7ebf3;--text-muted:#8b96ab;--radius:12px;--shadow:0 4px 24px #00000073;--gradient-primary:linear-gradient(135deg, var(--primary), var(--primary-2));--tint-primary:#38bdf824;--tint-success:#34d39924;--tint-danger:#f8717124;--tint-warning:#fbbf2424;--border-success:#34d39966;--border-danger:#f8717166;--border-warning:#fbbf2466}body{background:radial-gradient(circle at 15% -10%, #38bdf829, transparent 45%), radial-gradient(circle at 90% 0%, #a855f724, transparent 40%), var(--bg);color:var(--text);background-attachment:fixed;margin:0;font-family:system-ui,Segoe UI,Roboto,sans-serif;font-size:16px;line-height:1.5}html,body{min-height:100%}h1,h2,h3{margin:0 0 8px;font-weight:700}p{margin:0}a{color:inherit;text-decoration:none}.logo{cursor:inherit;align-items:center;gap:8px;display:inline-flex}.logo-mark{filter:drop-shadow(0 0 6px #7c3aed80);flex-shrink:0;width:1.3em;height:1.3em}.logo-text{letter-spacing:-.5px;color:var(--text);font-weight:800}.app{flex-direction:column;min-height:100vh;display:flex}.app-header{background:var(--surface);border-bottom:1px solid var(--border);color:var(--text);z-index:100;justify-content:space-between;align-items:center;gap:16px;padding:12px 24px;display:flex;position:sticky;top:0}.app-title{cursor:pointer;margin:0;font-size:22px}nav{align-items:center;gap:22px;display:flex}.nav-btn{color:var(--text-muted);white-space:nowrap;cursor:pointer;background:0 0;border:none;border-bottom:2px solid #0000;padding:4px 2px;font-size:14px;font-weight:600;transition:color .15s,border-color .15s}.nav-btn:hover{color:var(--text)}.nav-btn-active{color:var(--text);border-image:var(--gradient-primary) 1}.nav-avatar{background:var(--gradient-primary);color:#fff;cursor:pointer;border:none;border-radius:50%;flex-shrink:0;justify-content:center;align-items:center;width:30px;height:30px;padding:0;font-family:inherit;font-size:13px;font-weight:700;transition:filter .15s;display:flex}.nav-avatar:hover{filter:brightness(1.1)}.nav-end{flex-shrink:0;align-items:center;gap:10px;display:flex}.nav-btn-signout{border:1.5px solid var(--border);color:var(--text-muted);background:0 0;border-radius:999px;padding:5px 14px}.nav-btn-signout:hover{color:var(--text);border-color:var(--text-muted)}@media (max-width:768px){.app-header{flex-wrap:wrap;gap:8px;padding:10px 12px}.app-title{font-size:18px}nav{flex-wrap:wrap;order:3;gap:14px;width:100%}.nav-end{margin-left:auto}.nav-btn{font-size:12px}}.app-main{flex:1;width:100%;max-width:800px;margin:0 auto;padding:32px 16px}.card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:28px}.btn-primary{background:var(--gradient-primary);color:#fff;border-radius:var(--radius);cursor:pointer;border:none;padding:12px 28px;font-size:16px;font-weight:600;transition:filter .15s,transform .1s}.btn-primary:hover:not(:disabled){filter:brightness(1.1)}.btn-primary:active:not(:disabled){transform:scale(.98)}.btn-primary:disabled{opacity:.45;cursor:not-allowed}.btn-primary.btn-large{width:100%;margin-top:8px;padding:14px 36px;font-size:18px}.btn-secondary{color:var(--primary);border:2px solid var(--primary);border-radius:var(--radius);cursor:pointer;background:0 0;padding:10px 22px;font-size:15px;font-weight:600;transition:background .15s}.btn-secondary:hover{background:var(--tint-primary)}.btn-danger{color:var(--danger);border:2px solid var(--danger);border-radius:var(--radius);cursor:pointer;background:0 0;padding:10px 22px;font-size:14px;font-weight:600;transition:background .15s}.btn-danger:hover{background:var(--tint-danger)}.btn-danger-confirm{background:var(--danger);color:#fff}.btn-quit{color:#fff;cursor:pointer;background:#ffffff26;border:1px solid #ffffff4d;border-radius:8px;padding:6px 14px;font-size:13px}.btn-quit:hover{background:#ffffff40}.text-input{border:2px solid var(--border);background:var(--surface-2);width:100%;color:var(--text);border-radius:8px;outline:none;padding:10px 14px;font-size:16px;transition:border-color .15s}.text-input::placeholder{color:var(--text-muted)}.text-input:focus{border-color:var(--primary)}.number-input{border:2px solid var(--border);background:var(--surface-2);width:80px;color:var(--text);text-align:center;border-radius:8px;outline:none;padding:8px 10px;font-size:16px}.number-input:focus{border-color:var(--primary)}.number-input:disabled{background:var(--surface);color:var(--text-muted);cursor:not-allowed;opacity:.7}.chip{background:var(--surface-2);color:var(--text-muted);cursor:pointer;border:2px solid #0000;border-radius:999px;padding:4px 14px;font-size:14px;transition:all .15s}.chip:hover{background:var(--tint-primary);color:var(--primary)}.chip-active{background:var(--tint-primary);border-color:var(--primary);color:var(--primary);font-weight:600}.home{animation:.3s fadeIn}.form-group{text-align:left;margin-bottom:20px}.form-group label{color:var(--text);margin-bottom:8px;font-weight:600;display:block}.form-row{gap:24px;display:flex}.form-row .form-group{flex:1}.topic-grid{flex-wrap:wrap;gap:8px;display:flex}.topic-btn{border:2px solid var(--border);background:var(--surface-2);color:var(--text);cursor:pointer;white-space:nowrap;border-radius:999px;padding:7px 14px;font-size:13px;font-weight:600;transition:border-color .15s,background .15s}.topic-btn:hover{border-color:var(--primary);background:var(--tint-primary)}.topic-btn-active{border-color:var(--primary);background:var(--tint-primary);color:var(--primary)}.badge-topic{text-overflow:ellipsis;white-space:nowrap;background:#fff3;max-width:160px;font-size:12px;font-weight:600;overflow:hidden}.mode-toggle{gap:12px;display:flex}.mode-btn{border:2px solid var(--border);border-radius:var(--radius);background:var(--surface-2);cursor:pointer;text-align:left;flex-direction:column;flex:1;align-items:flex-start;gap:3px;padding:12px 16px;transition:border-color .15s,background .15s;display:flex}.mode-btn:hover,.mode-btn-active{border-color:var(--primary);background:var(--tint-primary)}.mode-btn-title{color:var(--text);font-size:14px;font-weight:700}.mode-btn-desc{color:var(--text-muted);font-size:12px}.subject-grid{grid-template-columns:1fr 1fr;gap:12px;display:grid}.subject-card{border:2px solid var(--border);border-radius:var(--radius);background:var(--surface-2);color:var(--text);cursor:pointer;flex-direction:column;align-items:center;gap:8px;padding:18px 12px;font-size:15px;font-weight:600;transition:all .15s;display:flex}.subject-card:hover{border-color:var(--subject-color,var(--primary));box-shadow:0 0 16px color-mix(in srgb, var(--subject-color,var(--primary)) 45%, transparent)}.subject-card-active{border-color:var(--subject-color,var(--primary));background:color-mix(in srgb, var(--subject-color,var(--primary)) 14%, var(--surface));box-shadow:0 0 20px color-mix(in srgb, var(--subject-color,var(--primary)) 55%, transparent);color:var(--subject-color,var(--primary))}.subject-icon{width:32px;height:32px;color:var(--subject-color,var(--primary));filter:drop-shadow(0 0 6px color-mix(in srgb, var(--subject-color,var(--primary)) 70%, transparent))}.subject-icon-inline{vertical-align:-3px;width:16px;height:16px;margin-right:2px}.hint{color:var(--text-muted);margin-top:4px;font-size:12px;display:block}.error-msg{color:var(--danger);margin-bottom:8px;font-size:14px}.board-grid{flex-wrap:wrap;gap:8px;display:flex}.board-btn{border:2px solid var(--border);background:var(--surface-2);cursor:pointer;color:var(--text-muted);border-radius:999px;padding:7px 16px;font-size:14px;font-weight:600;transition:all .15s}.board-btn:hover{border-color:var(--primary);color:var(--primary);background:var(--tint-primary)}.board-btn-active{border-color:var(--board-color,var(--primary));background:color-mix(in srgb, var(--board-color,var(--primary)) 16%, var(--surface));color:var(--board-color,var(--primary))}.board-note{color:var(--text-muted);margin-top:8px;font-size:13px;font-style:italic}.home-extras{grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;margin-top:20px;display:grid}.preview-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);padding:16px}.preview-card-header{justify-content:space-between;align-items:center;margin-bottom:8px;font-size:14px;font-weight:700;display:flex}.challenge-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);align-items:flex-start;gap:12px;padding:16px;display:flex}.challenge-trophy{filter:drop-shadow(0 0 8px #fbbf248c);font-size:28px}.challenge-body{flex:1;min-width:0}.challenge-title{margin-bottom:2px;font-size:14px;font-weight:700}.challenge-desc{color:var(--text-muted);margin-bottom:8px;font-size:12px}.challenge-track{background:var(--surface-2);border-radius:999px;height:8px;margin-bottom:6px;overflow:hidden}.challenge-fill{background:var(--gradient-primary);border-radius:999px;height:100%;transition:width .4s}.challenge-count{color:var(--text-muted);margin:0;font-size:12px;font-weight:700}.quiz{animation:.3s fadeIn}.quiz-header{background:var(--gradient-primary);color:#fff;border-radius:var(--radius);box-shadow:0 4px 20px color-mix(in srgb, var(--primary) 35%, transparent);justify-content:space-between;align-items:center;gap:12px;margin-bottom:8px;padding:12px 20px;display:flex}.quiz-meta{flex-wrap:wrap;flex:1;align-items:center;gap:12px;display:flex}.badge{background:#ffffff40;border-radius:999px;padding:3px 12px;font-size:13px;font-weight:700}.badge-board{opacity:.9;background:#ffffff26;font-size:11px;font-weight:600}.badge-mock{background:#facc1540;border:1px solid #facc1580;font-size:12px;font-weight:700}.quiz-progress{opacity:.9;font-size:14px}.timer-block{flex-shrink:0;width:54px;height:54px;position:relative}.timer-ring{width:54px;height:54px}.timer-text{color:#fff;justify-content:center;align-items:center;font-size:12px;font-weight:700;display:flex;position:absolute;inset:0}.progress-bar-track{background:var(--border);border-radius:999px;height:6px;margin-bottom:20px;overflow:hidden}.progress-bar-fill{background:var(--gradient-primary);border-radius:999px;height:100%;transition:width .4s}.question-card{animation:.25s slideUp}.question-image{text-align:center;margin-bottom:16px}.question-image img{border:1px solid var(--border);background:#fff;border-radius:8px;max-width:100%;height:auto}.question-text{margin-bottom:20px;font-size:18px;font-weight:600;line-height:1.5}.calculator-indicator{border-radius:999px;align-items:center;gap:5px;margin-bottom:14px;padding:3px 10px;font-size:12px;font-weight:600;display:inline-flex}.calc-yes{background:var(--tint-warning);color:var(--warning);border:1px solid var(--border-warning)}.calc-no{background:var(--tint-success);color:var(--success);border:1px solid var(--border-success)}.options-grid{grid-template-columns:1fr 1fr;gap:10px;margin-bottom:20px;display:grid}.option-btn{border:2px solid var(--border);border-radius:var(--radius);background:var(--surface-2);color:var(--text);cursor:pointer;text-align:left;padding:14px 16px;font-size:15px;line-height:1.4;transition:all .15s}.option-btn:hover:not(:disabled),.option-selected{border-color:var(--primary);background:var(--tint-primary)}.option-correct{font-weight:700;border-color:var(--success)!important;background:var(--tint-success)!important}.option-wrong{border-color:var(--danger)!important;background:var(--tint-danger)!important}.option-disabled{opacity:.5;cursor:not-allowed}.typed-answer{margin-bottom:20px}.char-toolbar{flex-wrap:wrap;gap:6px;margin-top:8px;display:flex}.char-btn{background:var(--surface-2);color:var(--text);border:1.5px solid var(--border);cursor:pointer;border-radius:6px;padding:4px 10px;font-size:15px;line-height:1.4;transition:background .12s,border-color .12s}.char-btn:hover{background:var(--tint-primary);border-color:var(--primary)}.typed-feedback{border-radius:8px;margin-top:10px;padding:10px 14px;font-size:15px;font-weight:600}.feedback-correct{background:var(--tint-success);color:var(--success)}.feedback-wrong{background:var(--tint-danger);color:var(--danger)}.quiz-actions{justify-content:flex-end;display:flex}.results{animation:.3s fadeIn}.results-card{text-align:center}.results-child{color:var(--text-muted);margin-bottom:20px;font-size:15px}.score-circle{border:6px solid var(--grade-color,var(--primary));border-radius:50%;flex-direction:column;justify-content:center;align-items:center;gap:2px;width:140px;height:140px;margin:12px auto 20px;display:inline-flex}.score-num{color:var(--text);font-size:26px;font-weight:800}.score-marks{color:var(--text-muted);margin:2px 0;font-size:13px}.score-pct{color:var(--text-muted);font-size:20px;font-weight:700}.score-grade{font-size:13px;font-weight:700}.results-meta{color:var(--text-muted);justify-content:center;gap:24px;margin-bottom:24px;font-size:15px;display:flex}.summary-bar{background:var(--surface-2);border:1.5px solid var(--border);border-radius:var(--radius);justify-content:center;align-items:center;gap:0;margin-bottom:24px;padding:14px 24px;display:flex}.summary-stat{flex-direction:column;flex:1;align-items:center;display:flex}.summary-count{font-size:28px;font-weight:800;line-height:1}.summary-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin-top:2px;font-size:12px;font-weight:600}.summary-stat-correct .summary-count{color:var(--success)}.summary-stat-wrong .summary-count{color:var(--danger)}.summary-divider{background:var(--border);width:1px;height:40px;margin:0 8px}.breakdown{text-align:left;margin-bottom:24px}.breakdown-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:8px;margin-bottom:12px;display:flex}.breakdown-header h3{margin:0;font-size:16px}.breakdown-filters{flex-wrap:wrap;gap:6px;display:flex}.filter-tab{border:1.5px solid var(--border);background:var(--surface-2);cursor:pointer;color:var(--text-muted);border-radius:999px;padding:5px 12px;font-size:13px;font-weight:600;transition:all .15s}.filter-tab:hover{border-color:var(--primary);color:var(--primary)}.filter-tab-active{border-color:var(--primary);background:var(--tint-primary);color:var(--primary)}.filter-tab-active-wrong{border-color:var(--danger);background:var(--tint-danger);color:var(--danger)}.filter-tab-active-correct{border-color:var(--success);background:var(--tint-success);color:var(--success)}.breakdown-item{border:1.5px solid #0000;border-radius:8px;gap:12px;margin-bottom:8px;padding:12px 14px;display:flex}.breakdown-correct{background:var(--tint-success);border-color:var(--border-success)}.breakdown-wrong{background:var(--tint-danger);border-color:var(--border-danger)}.breakdown-icon{flex-shrink:0;margin-top:2px;font-size:16px;font-weight:800}.breakdown-correct .breakdown-icon{color:var(--success)}.breakdown-wrong .breakdown-icon{color:var(--danger)}.breakdown-qnum{color:var(--text-muted);font-weight:700}.breakdown-marks{color:var(--text-muted);margin-left:6px;font-size:11px;font-weight:400}.breakdown-q{margin-bottom:5px;font-size:14px;font-weight:600}.breakdown-your{color:var(--danger);margin-bottom:2px;font-size:13px}.breakdown-ans{color:var(--success);font-size:13px;font-weight:600}.breakdown-ans-correct{color:var(--success);font-size:13px}.breakdown-explanation{color:var(--primary);background:var(--tint-primary);border-left:3px solid var(--primary);border-radius:0 6px 6px 0;margin-top:6px;padding:6px 10px;font-size:13px;line-height:1.5}.focus-panel-list{margin:16px 0}.focus-panel-heading{color:var(--text-muted);margin:0 0 8px;font-size:14px}.focus-panel{background:var(--tint-warning);border-left:3px solid var(--warning);border-radius:0 8px 8px 0;flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin:16px 0;padding:14px 16px;display:flex}.focus-panel-text{margin:0;font-size:14px}.results-actions{flex-wrap:wrap;justify-content:center;gap:10px;display:flex}.report{animation:.3s fadeIn}.report-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:20px;display:flex}.filter-row{flex-wrap:wrap;gap:8px;display:flex}.overall-stats{flex-wrap:wrap;gap:16px;margin-bottom:24px;display:flex}.stat-box{background:var(--surface-2);border-radius:var(--radius);text-align:center;border:1.5px solid var(--border);flex:1;padding:16px}.stat-num{color:var(--primary);font-size:28px;font-weight:800;display:block}.stat-label{color:var(--text-muted);font-size:13px}.subject-reports{flex-direction:column;gap:20px;margin-bottom:24px;display:flex}.subject-report-card{border:1.5px solid var(--border);border-radius:var(--radius);padding:16px}.subject-report-header{justify-content:space-between;align-items:center;margin-bottom:10px;display:flex}.subject-report-header h3{margin:0;font-size:16px}.subject-report-stats{align-items:center;gap:10px;display:flex}.avg-badge{background:var(--tint-primary);color:var(--primary);border-radius:999px;padding:2px 10px;font-size:13px;font-weight:700}.trend-up{color:var(--success);font-size:13px;font-weight:700}.trend-down{color:var(--danger);font-size:13px;font-weight:700}.trend-flat{color:var(--text-muted);font-size:13px}.mini-chart{width:100%;height:60px;margin-bottom:12px;display:block}.no-data{color:var(--text-muted);text-align:center;padding:8px 0;font-size:14px}.history-table{border-collapse:collapse;width:100%;font-size:14px}.history-table th{text-align:left;color:var(--text-muted);border-bottom:1.5px solid var(--border);padding:6px 10px;font-size:12px;font-weight:600}.history-table td{border-bottom:1px solid var(--border);padding:7px 10px}.pct-badge{border-radius:999px;padding:2px 8px;font-size:13px;font-weight:700}.empty-state{color:var(--text-muted);margin:20px 0}.report-footer{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:10px;display:flex}.dash-tabs{border-top:1.5px solid var(--border);flex-wrap:wrap;gap:8px;margin-top:20px;padding-top:16px;display:flex}.dash-tab{border:2px solid var(--border);background:var(--surface-2);cursor:pointer;color:var(--text-muted);border-radius:999px;align-items:center;gap:6px;padding:7px 18px;font-size:14px;font-weight:600;transition:all .15s;display:flex}.dash-tab:hover{border-color:var(--primary);color:var(--primary);background:var(--tint-primary)}.dash-tab-active{border-color:var(--primary);background:var(--tint-primary);color:var(--primary)}.dash-tab-count{background:var(--primary);color:#fff;text-align:center;border-radius:999px;min-width:20px;padding:1px 7px;font-size:11px;font-weight:700}.dash-tab-active .dash-tab-count{background:var(--primary-dark)}.dash-truncate{text-overflow:ellipsis;white-space:nowrap;max-width:160px;font-size:12px;overflow:hidden}.essay-practice{animation:.3s fadeIn}.essay-question-select{flex-direction:column;gap:10px;margin-bottom:20px;display:flex}.essay-q-btn{border:2px solid var(--border);border-radius:var(--radius);background:var(--surface-2);color:var(--text);text-align:left;cursor:pointer;padding:14px 18px;transition:all .15s}.essay-q-btn:hover,.essay-q-btn-active{border-color:var(--primary);background:var(--tint-primary)}.essay-q-title{color:var(--text);margin-bottom:3px;font-size:15px;font-weight:600}.essay-q-meta{color:var(--text-muted);font-size:12px}.essay-extract{background:var(--surface-2);border-left:4px solid var(--primary);color:var(--text);white-space:pre-wrap;border-radius:0 8px 8px 0;margin-bottom:16px;padding:14px 16px;font-size:14px;line-height:1.7}.essay-textarea{border:2px solid var(--border);background:var(--surface-2);width:100%;min-height:200px;color:var(--text);resize:vertical;border-radius:8px;outline:none;padding:12px 14px;font-family:inherit;font-size:15px;line-height:1.6;transition:border-color .15s}.essay-textarea:focus{border-color:var(--primary)}.marking-result{animation:.3s fadeIn}.marking-header{flex-wrap:wrap;justify-content:space-between;align-items:center;gap:12px;margin-bottom:20px;display:flex}.marks-badge{color:var(--primary);font-size:24px;font-weight:800}.grade-badge{background:var(--gradient-primary);color:#fff;border-radius:999px;padding:4px 16px;font-size:16px;font-weight:700}.criteria-list{flex-direction:column;gap:10px;margin-bottom:20px;display:flex}.criterion-item{border:1.5px solid var(--border);border-radius:8px;padding:12px 14px}.criterion-item-full{border-color:var(--border-success);background:var(--tint-success)}.criterion-item-partial{border-color:var(--border-warning);background:var(--tint-warning)}.criterion-item-none{border-color:var(--border-danger);background:var(--tint-danger)}.criterion-header{justify-content:space-between;align-items:flex-start;gap:8px;margin-bottom:4px;display:flex}.criterion-text{flex:1;font-size:14px;font-weight:600}.criterion-marks{white-space:nowrap;font-size:13px;font-weight:700}.criterion-marks-full{color:var(--success)}.criterion-marks-partial{color:var(--warning)}.criterion-marks-none{color:var(--danger)}.criterion-comment{color:var(--text-muted);font-size:13px}.overall-feedback{background:var(--tint-primary);border-left:4px solid var(--primary);color:var(--text);border-radius:0 8px 8px 0;padding:14px 16px;font-size:14px;line-height:1.7}.mock-paper,.mock-papers-list{animation:.3s fadeIn}.mock-intro h2{margin-bottom:4px;font-size:22px}.mock-subtitle{color:var(--text-muted);font-size:13px;font-weight:500}.mock-paper-header{margin-bottom:16px}.mock-meta-row{color:var(--text-muted);gap:20px;margin-bottom:20px;font-size:14px;display:flex}.mock-instructions{background:var(--tint-success);border:1px solid var(--border-success);border-radius:10px;margin-bottom:16px;padding:14px 18px}.mock-instructions h3{margin-bottom:8px;font-size:14px;font-weight:700}.mock-instructions ul{margin:0;padding-left:18px}.mock-instructions li{color:var(--text);margin-bottom:4px;font-size:13px;line-height:1.5}.mock-q-label{color:var(--text-muted);align-items:center;gap:8px;margin-bottom:12px;font-size:13px;font-weight:700;display:flex}.mock-q-marks{background:var(--gradient-primary);color:#fff;border-radius:4px;padding:1px 8px;font-size:11px;font-weight:600}.mock-hint{color:var(--warning);background:var(--tint-warning);border-radius:6px;margin-top:8px;padding:8px 12px;font-size:13px}.mock-nav-pills{flex-wrap:wrap;gap:6px;margin-top:16px;padding:0 4px;display:flex}.mock-nav-pill{border:1.5px solid var(--border);background:var(--surface-2);cursor:pointer;width:40px;height:32px;color:var(--text-muted);border-radius:6px;font-size:11px;font-weight:600}.mock-nav-pill:hover{border-color:var(--primary);color:var(--primary)}.mock-nav-pill-active{border-color:var(--primary);background:var(--gradient-primary);color:#fff!important}.mock-nav-pill-done{border-color:var(--border-success);color:var(--success);background:var(--tint-success)}.mock-nav-pill-done.mock-nav-pill-active{background:var(--gradient-primary);color:#fff!important}.mock-review-q{margin-bottom:16px}.mock-q-number{border-bottom:1.5px solid var(--border);margin-bottom:12px;padding-bottom:10px;font-size:15px;font-weight:700}.mock-review-part{border-bottom:1px solid var(--border);margin-bottom:20px;padding-bottom:20px}.mock-review-part:last-child{border-bottom:none;margin-bottom:0;padding-bottom:0}.mock-part-label{color:var(--text-muted);text-transform:uppercase;letter-spacing:.05em;margin-bottom:6px;font-size:12px;font-weight:700}.mock-review-question{color:var(--text);margin-bottom:12px;font-size:14px;font-weight:600}.mock-review-cols{grid-template-columns:1fr 1fr;gap:12px;margin-bottom:12px;display:grid}@media (max-width:600px){.mock-review-cols{grid-template-columns:1fr}}.mock-review-col-label{text-transform:uppercase;letter-spacing:.06em;color:var(--text-muted);margin-bottom:6px;font-size:11px;font-weight:700}.mock-user-answer{background:var(--surface-2);border:1.5px solid var(--border);white-space:pre-wrap;border-radius:8px;min-height:48px;padding:10px 14px;font-size:13px}.mock-model-answer{background:var(--tint-success);border:1.5px solid var(--border-success);min-height:48px;color:var(--success);white-space:pre-wrap;border-radius:8px;padding:10px 14px;font-size:13px;font-weight:600}.mock-selfmark{flex-wrap:wrap;align-items:center;gap:10px;display:flex}.mock-selfmark-label{color:var(--text-muted);font-size:13px;font-weight:600}.mock-selfmark-btn{border:1.5px solid var(--border);background:var(--surface-2);color:var(--text);cursor:pointer;border-radius:6px;padding:6px 14px;font-size:13px;font-weight:600}.mock-selfmark-yes{color:var(--success);border-color:var(--border-success)}.mock-selfmark-yes:hover{background:var(--tint-success)}.mock-selfmark-yes-active{background:var(--success);color:#fff;border-color:var(--success)}.mock-selfmark-no{color:var(--danger);border-color:var(--border-danger)}.mock-selfmark-no:hover{background:var(--tint-danger)}.mock-selfmark-no-active{background:var(--danger);color:#fff;border-color:var(--danger)}.mock-table-wrapper{margin:8px 0;overflow-x:auto}.mock-table{border-collapse:collapse;white-space:nowrap;width:100%;font-size:.88rem}.mock-table th,.mock-table td{border:1px solid var(--border);text-align:center;padding:7px 12px}.mock-table th{background:var(--surface-2);font-size:.82rem;font-weight:700}.mock-table td:first-child{text-align:left;background:var(--surface-2);font-weight:600}.mock-context{background:var(--surface-2);border-left:3px solid var(--primary);color:var(--text-muted);border-radius:6px;margin-bottom:14px;padding:10px 14px;font-size:.95rem}.auth-page{justify-content:center;align-items:center;min-height:100vh;padding:24px 16px;display:flex}.auth-card{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);box-shadow:var(--shadow);width:100%;max-width:420px;padding:36px 32px}.auth-title{justify-content:center;margin-bottom:6px;font-size:26px;display:flex}.auth-subtitle{color:var(--text-muted);text-align:center;margin-bottom:28px;font-size:14px}.auth-footer{text-align:center;color:var(--text-muted);margin-top:20px;font-size:14px}.auth-footer a{color:var(--primary);cursor:pointer;font-weight:600}.auth-footer a:hover{text-decoration:underline}.legal-footer{text-align:center;color:var(--text-muted);opacity:.8;margin-top:16px;font-size:12px}.legal-footer a{color:var(--text-muted);text-underline-offset:2px;text-decoration:underline}.legal-footer a:hover{color:var(--text)}.legal-page{max-width:760px;margin:0 auto;padding:48px 24px 64px}.legal-back{color:var(--text-muted);align-items:center;gap:6px;margin-bottom:24px;font-size:14px;display:inline-flex}.legal-back:hover{color:var(--text)}.legal-badge{letter-spacing:.1em;text-transform:uppercase;color:var(--primary);margin-bottom:8px;font-size:12px;font-weight:700;display:inline-block}.legal-page h1{margin-bottom:4px;font-size:32px}.legal-meta{color:var(--text-muted);border-bottom:1px solid var(--border);margin-bottom:32px;padding-bottom:24px;font-size:13px}.legal-intro{color:var(--text-muted);margin-bottom:36px;line-height:1.7}.legal-section{margin-bottom:28px}.legal-section h2{margin-bottom:10px;font-size:17px}.legal-section p,.legal-section li{color:var(--text-muted);white-space:pre-line;font-size:14px;line-height:1.75}.legal-section ul{margin-top:4px;padding-left:22px}.legal-section li{margin-bottom:4px}.legal-section strong{color:var(--text)}.legal-section a{color:var(--primary)}.legal-divider{border:none;border-top:1px solid var(--border);margin:32px 0 20px}.legal-copyright{color:var(--text-muted);opacity:.8;font-size:12px}.loading-spinner{color:var(--text-muted);justify-content:center;align-items:center;gap:10px;padding:60px;font-size:15px;display:flex}@keyframes fadeIn{0%{opacity:0;transform:translateY(8px)}to{opacity:1;transform:translateY(0)}}@keyframes slideUp{0%{opacity:0;transform:translateY(16px)}to{opacity:1;transform:translateY(0)}}.fc-scene{perspective:1000px;cursor:pointer;-webkit-user-select:none;user-select:none;margin-bottom:24px}.fc-inner{width:100%;min-height:200px;transform-style:preserve-3d;transition:transform .45s;position:relative}.fc-inner.fc-flipped{transform:rotateY(180deg)}.fc-face{border-radius:var(--radius);border:2px solid var(--border);background:var(--surface);box-shadow:var(--shadow);backface-visibility:hidden;flex-direction:column;justify-content:center;align-items:center;min-height:200px;padding:28px 24px;display:flex;position:absolute;inset:0}.fc-face-back{background:var(--tint-primary);border-color:var(--primary);transform:rotateY(180deg)}.fc-label{text-transform:uppercase;letter-spacing:.08em;color:var(--text-muted);font-size:11px;font-weight:700;position:absolute;top:14px;left:18px}.fc-label-back{color:var(--primary)}.fc-text{text-align:center;white-space:pre-wrap;margin:0;font-size:18px;font-weight:600;line-height:1.5}.fc-tap-hint{color:var(--text-muted);font-size:12px;position:absolute;bottom:14px}.fc-study{animation:.3s fadeIn}.fc-study-header{justify-content:space-between;align-items:flex-start;margin-bottom:16px;display:flex}.fc-deck-label{color:var(--text-muted);margin:0 0 2px;font-size:13px;font-weight:600}.fc-study-count{margin:0;font-size:22px;font-weight:800}.fc-confidence-row{text-align:center;animation:.2s fadeIn}.fc-confidence-label{color:var(--text-muted);margin-bottom:12px;font-size:14px}.fc-confidence-btns{justify-content:center;gap:12px;display:flex}.fc-btn-learning{border-radius:var(--radius);border:2px solid var(--danger);background:var(--surface-2);max-width:180px;color:var(--danger);cursor:pointer;flex:1;padding:12px 20px;font-size:15px;font-weight:700;transition:background .15s}.fc-btn-learning:hover{background:var(--tint-danger)}.fc-btn-got-it{border-radius:var(--radius);border:2px solid var(--success);background:var(--success);color:#fff;cursor:pointer;flex:1;max-width:180px;padding:12px 20px;font-size:15px;font-weight:700;transition:background .15s}.fc-btn-got-it:hover{filter:brightness(1.1)}.fc-session-done{text-align:center}.fc-done-stats{justify-content:center;gap:16px;margin:24px 0;display:flex}.fc-done-stat{background:var(--surface-2);border:1.5px solid var(--border);border-radius:var(--radius);flex:1;max-width:110px;padding:16px 8px}.fc-done-got{border-color:var(--border-success);background:var(--tint-success)}.fc-done-learning{border-color:var(--border-danger);background:var(--tint-danger)}.fc-done-num{font-size:32px;font-weight:800;display:block}.fc-done-got .fc-done-num{color:var(--success)}.fc-done-learning .fc-done-num{color:var(--danger)}.fc-done-lbl{color:var(--text-muted);font-size:12px;font-weight:600}.fc-done-actions{justify-content:center;gap:10px;margin-top:8px;display:flex}.fc-selector{animation:.3s fadeIn}.fc-subject-list{flex-direction:column;gap:10px;display:flex}.fc-subject-row{border:1.5px solid var(--border);border-radius:var(--radius);overflow:hidden}.fc-subject-header{background:var(--surface-2);cursor:pointer;-webkit-user-select:none;user-select:none;align-items:center;gap:10px;padding:12px 16px;transition:background .15s;display:flex}.fc-subject-header:hover{background:var(--tint-primary)}.fc-subject-icon{flex-shrink:0;width:22px;height:22px;font-size:20px}.fc-subject-name{font-size:15px;font-weight:700}.fc-subject-count{color:var(--text-muted);font-size:12px}.fc-subject-chevron{color:var(--text-muted);margin-left:4px;font-size:11px}.fc-topic-list{border-top:1.5px solid var(--border)}.fc-topic-row{border-bottom:1px solid var(--border);align-items:center;gap:10px;padding:10px 20px;display:flex}.fc-topic-row:last-child{border-bottom:none}.fc-topic-name{flex:1;font-size:14px;font-weight:600}.fc-topic-count{color:var(--text-muted);font-size:12px}.fc-user-card-list{border-top:1.5px solid var(--border)}.fc-user-card-item{border-bottom:1px solid var(--border);align-items:flex-start;gap:10px;padding:12px 16px;display:flex}.fc-user-card-item:last-child{border-bottom:none}.fc-user-card-body{flex:1}.fc-user-card-topic{color:var(--primary);background:var(--tint-primary);border-radius:999px;margin-bottom:4px;padding:1px 8px;font-size:11px;font-weight:700;display:inline-block}.fc-user-card-front{margin:0 0 2px;font-size:13px;font-weight:600}.fc-user-card-back{color:var(--text-muted);margin:0;font-size:12px}.fc-delete-btn{cursor:pointer;opacity:.5;background:0 0;border:none;flex-shrink:0;padding:2px 4px;font-size:16px;transition:opacity .15s}.fc-delete-btn:hover{opacity:1}.fc-scan-upload-area{border:2px dashed var(--border);border-radius:var(--radius);cursor:pointer;justify-content:center;align-items:center;min-height:160px;transition:border-color .15s;display:flex;overflow:hidden}.fc-scan-upload-area:hover{border-color:var(--primary)}.fc-scan-placeholder{text-align:center;color:var(--text-muted);padding:24px}.fc-scan-placeholder p{margin:6px 0 0;font-size:14px}.fc-scan-preview{object-fit:contain;width:100%;max-height:300px;display:block}.fc-review-list{flex-direction:column;gap:16px;margin-bottom:8px;display:flex}.fc-review-card{border:1.5px solid var(--border);border-radius:var(--radius);background:var(--surface-2);padding:14px 16px}.fc-review-card-header{justify-content:space-between;align-items:center;margin-bottom:10px;display:flex}.fc-review-num{color:var(--text-muted);text-transform:uppercase;font-size:12px;font-weight:700}.fc-review-delete{cursor:pointer;color:var(--text-muted);background:0 0;border:none;border-radius:4px;padding:2px 6px;font-size:14px;transition:background .15s,color .15s}.fc-review-delete:hover{background:var(--tint-danger);color:var(--danger)}@media (max-width:520px){.app-main{padding:16px 12px}.card{padding:18px}.options-grid{grid-template-columns:1fr}.subject-grid{grid-template-columns:1fr 1fr}.form-row{flex-direction:column;gap:0}.results-actions,.overall-stats,.mode-toggle{flex-direction:column}.auth-card{padding:24px 20px}}