/* SITE 1.80 Maxwell–Boltzmann exam practice */
.boltz-hero-actions{margin-top:20px}.boltz-practice-shell{max-width:1120px}.boltz-practice-app{padding:0;overflow:hidden}.boltz-practice-header{display:flex;justify-content:space-between;gap:24px;align-items:end;padding:26px 30px 20px;border-bottom:1px solid var(--line);background:#fbfcfa}.boltz-practice-header h2{margin:.1em 0 0;color:var(--navy);font-family:Georgia,"Times New Roman",serif}.boltz-session-summary{display:flex;gap:9px}.boltz-session-summary span{min-width:104px;display:grid;text-align:center;border:1px solid #d2dfdc;background:#fff;border-radius:12px;padding:8px 10px}.boltz-session-summary strong{font-size:1.3rem;color:var(--navy)}.boltz-session-summary small{font-size:.68rem;color:var(--muted)}
.boltz-practice-toolbar{display:grid;grid-template-columns:minmax(230px,1fr) minmax(160px,.55fr) auto;gap:16px;align-items:end;padding:18px 30px;background:#f3f7f5;border-bottom:1px solid var(--line)}.boltz-practice-toolbar label{display:grid;gap:5px;font-size:.82rem;font-weight:800;color:var(--navy)}.boltz-practice-toolbar label small{max-width:28rem;color:var(--muted);font-weight:500;line-height:1.35}.boltz-practice-toolbar select{min-height:44px;background:#fff;border:1px solid #a9b8b5;border-radius:9px;padding:8px 10px}.boltz-practice-toolbar .button{min-height:44px}
.boltz-mode-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;padding:18px 30px;border-bottom:1px solid var(--line);background:#fff}.boltz-mode-button{text-align:left;border:1px solid #cad8d4;border-radius:12px;background:#fff;padding:13px 14px;cursor:pointer}.boltz-mode-button strong,.boltz-mode-button small{display:block}.boltz-mode-button strong{color:var(--navy);margin-bottom:3px}.boltz-mode-button small{color:var(--muted);line-height:1.35}.boltz-mode-button.active{border-color:var(--teal2);box-shadow:inset 0 0 0 1px var(--teal2);background:#eef7f5}.boltz-mode-button.aqa-extra:not(.active){background:#fffaf2}.boltz-mode-button.aqa-extra small::after{content:" · AQA focus";font-weight:700;color:#966746}
.boltz-question-stage{padding:28px 30px 32px}.boltz-question-meta{display:flex;gap:7px;flex-wrap:wrap;margin-bottom:15px}.boltz-question-meta span{background:#edf3f1;border:1px solid #d2ddda;border-radius:999px;padding:4px 9px;font-size:.74rem;font-weight:750;color:#415862}.boltz-question{background:#f7f8f5;border:1px solid #e0e4df;border-radius:15px;padding:22px 24px;line-height:1.55}.boltz-question p:first-child{margin-top:0}.boltz-question p:last-child{margin-bottom:0}.boltz-answer{display:flex;gap:15px;align-items:end;flex-wrap:wrap;margin:22px 0 8px}.boltz-answer>#boltz-answer-control{flex:1;min-width:260px}.boltz-options{border:0;padding:0;display:grid;gap:9px}.boltz-options label{display:grid;grid-template-columns:auto 1fr;gap:10px;padding:11px 13px;border:1px solid #c8d3d0;border-radius:10px;background:#fff}.boltz-options input{margin-top:3px;accent-color:var(--teal)}.boltz-options.multi label{align-items:start}.boltz-answer .button{min-width:138px}.boltz-help-row{display:flex;gap:18px;margin-top:8px}.boltz-solution h3{font-family:Georgia,"Times New Roman",serif;color:var(--navy)}.boltz-solution .mark-route{padding:10px 12px;border-left:3px solid var(--teal);background:#f6faf8;margin:.6rem 0}.boltz-solution ul{margin-bottom:0}
.boltz-diagram-options{display:grid;grid-template-columns:repeat(2,minmax(0,1fr));gap:12px}.boltz-diagram-options label{display:block;padding:10px}.boltz-diagram-options input{position:absolute;opacity:0;pointer-events:none}.boltz-diagram-card{display:grid;gap:7px;border:2px solid transparent;border-radius:10px;padding:7px;background:#fbfcfa}.boltz-diagram-options input:checked+.boltz-diagram-card{border-color:var(--teal2);background:#eef7f5}.boltz-diagram-card svg{display:block;width:100%;height:auto;background:#fff;border:1px solid #d7dfdc;border-radius:8px}.boltz-diagram-card small{color:var(--muted);font-weight:650}.boltz-practice-app .feedback-panel{margin-top:16px}.boltz-practice-app .solution-panel{margin-top:16px}.boltz-next-step,.boltz-progress-nudge{display:flex;justify-content:space-between;gap:22px;align-items:center;margin-top:20px;padding:18px 20px;border:1px solid #bed4ce;border-radius:14px;background:#f2f8f5}.boltz-next-step[hidden],.boltz-progress-nudge[hidden]{display:none}.boltz-next-step h3{margin:0 0 .3rem;color:var(--navy);font-family:Georgia,"Times New Roman",serif}.boltz-next-step p,.boltz-progress-nudge p{margin:.2rem 0 0;color:var(--muted)}.boltz-practice-footer{display:flex;justify-content:space-between;gap:18px;border-top:1px solid var(--line);padding:17px 30px;background:#fbfcfa;font-size:.88rem}.boltz-practice-footer>span{color:var(--muted);text-align:right}
.boltz-exam-checklist{display:grid;grid-template-columns:repeat(2,1fr);gap:18px}.boltz-exam-checklist article{border:1px solid #cad8d4;border-radius:14px;background:#fff;padding:18px 20px}.boltz-exam-checklist h3{margin-top:0;color:var(--navy)}.boltz-exam-checklist ul{margin-bottom:0}.boltz-board-note{border-left:3px solid var(--copper);padding:10px 14px;background:#fff8ef;margin:18px 0}
@media(max-width:820px){.boltz-mode-grid{grid-template-columns:repeat(2,1fr)}.boltz-practice-toolbar{grid-template-columns:1fr 1fr}.boltz-practice-toolbar .button{grid-column:1/-1}.boltz-exam-checklist{grid-template-columns:1fr}}
@media(max-width:620px){.boltz-practice-header{align-items:start;flex-direction:column}.boltz-session-summary{width:100%}.boltz-session-summary span{flex:1}.boltz-practice-toolbar{grid-template-columns:1fr}.boltz-practice-toolbar .button{grid-column:auto;width:100%}.boltz-mode-grid{grid-template-columns:1fr}.boltz-question-stage,.boltz-practice-header,.boltz-practice-toolbar,.boltz-mode-grid,.boltz-practice-footer{padding-left:20px;padding-right:20px}.boltz-answer{flex-direction:column;align-items:stretch}.boltz-answer .button{width:100%}.boltz-diagram-options{grid-template-columns:1fr}.boltz-next-step,.boltz-progress-nudge{align-items:flex-start;flex-direction:column}.boltz-practice-footer{flex-direction:column}.boltz-practice-footer>span{text-align:left}}