/* NumberLogic only. Shared references and global navigation remain read-only. */
.oa-numberlogic { overflow-x: clip; overflow-anchor: none; }
.oa-numberlogic [hidden] { display: none !important; }
.oa-numberlogic .oa-lobby h1 span { white-space: normal; }
.oa-numberlogic .oa-lobby-content { width: min(100%, 900px); }
.oa-numberlogic .nl-instruction { margin: 0 0 18px; font-size: 14px; color: var(--oa-muted); }
.oa-numberlogic .oa-exam-form { width: min(100%, 1060px); transform: none; }
.oa-numberlogic .oa-exam-centre { padding: 12px 0 40px; }
.oa-numberlogic .nl-sequence { display: flex; flex-wrap: wrap; justify-content: center; align-items: center; gap: 8px 14px; margin: 0 auto 34px; max-width: 100%; font-size: clamp(25px, 3.4vw, 44px); line-height: 1.4; }
.oa-numberlogic .nl-term { display: inline-flex; align-items: center; gap: 12px; white-space: nowrap; }
.oa-numberlogic .nl-term:not(:last-child)::after { content: ','; color: inherit; }
.oa-numberlogic .nl-fraction { display: inline-flex; flex-direction: column; align-items: center; vertical-align: middle; font-size: .83em; line-height: 1.16; }
.oa-numberlogic .nl-fraction > span:first-child { border-bottom: 1.5px solid currentColor; min-width: 1.2em; padding: 0 4px 3px; }
.oa-numberlogic .nl-fraction > span:last-child { padding: 3px 4px 0; }
.oa-numberlogic .oa-exam-answers { grid-template-columns: repeat(5, minmax(0, 1fr)); width: min(100%, 900px); }
.oa-numberlogic .oa-exam-answer { display: flex; align-items: center; justify-content: center; min-height: 66px; }
.oa-numberlogic .oa-exam-answer:disabled { opacity: .8; }
.oa-numberlogic .oa-exam-answer[data-selected] { opacity: 1; background: #e9eeff; border-color: var(--oa-accent); }
.oa-numberlogic .nl-starting { display: grid; justify-items: center; gap: 20px; text-align: center; color: var(--oa-muted); }
.oa-numberlogic .nl-starting p { margin: 0; }
.oa-numberlogic .nl-starting .oa-results-preparation-indicator { width: 160px; }
.oa-numberlogic[data-phase="loading"] [data-nl-leave] { visibility: hidden; }
.oa-numberlogic.oa-exam-active [data-nl-below] { display: none; }
.oa-numberlogic .nl-result-mode { margin: 0 0 18px; font-size: 13px; color: var(--oa-muted); }
.oa-numberlogic .oa-result-score small { font-size: .33em; letter-spacing: -.025em; color: #65718a; }
.oa-numberlogic .oa-result-score { color: #263654; }
.oa-numberlogic [data-nl-band="competitive"] .oa-result-score { color: #00a563; }
.oa-numberlogic [data-nl-band="developing"] .oa-result-score { color: #b05b00; }
.oa-numberlogic .oa-score-value { margin-right: 14px; }
.oa-numberlogic .oa-score-help { text-align: left; }
.oa-numberlogic .oa-score-info { min-height: 32px; min-width: 32px; }
.oa-numberlogic .oa-result-link[data-nl-again] { color: #53627c; font-weight: 500; }
.oa-numberlogic .oa-result-feedback { max-width: 480px; }
.oa-numberlogic .nl-chart { margin: 16px 0; min-width: 0; }
.oa-numberlogic .nl-chart figcaption { font-size: 14px; font-weight: 600; }
.oa-numberlogic .nl-chart svg { display: block; width: 100%; height: auto; }
.oa-numberlogic .nl-chart text { fill: #606c82; font: 12px sans-serif; }
.oa-numberlogic .nl-chart p { font-size: 12px; margin: 0; color: var(--oa-muted); }
.oa-numberlogic .nl-chart-axis { stroke: #cbd7ed; fill: none; }
.oa-numberlogic .nl-chart-line { stroke: #4263ff; stroke-width: 2.5; fill: none; stroke-linejoin: round; stroke-linecap: round; }
.oa-numberlogic .nl-chart-target { stroke: #20805c; stroke-width: 1.5; stroke-dasharray: 5 5; }
.oa-numberlogic .nl-history h2 span { color: var(--oa-accent); }
.oa-numberlogic .nl-history-mode { border-top: 1px solid var(--oa-line); padding: 8px 0 20px; }
.oa-numberlogic .nl-history-mode > summary { display: flex; flex-wrap: wrap; gap: 8px 20px; justify-content: space-between; padding: 12px 0; font-weight: 500; }
.oa-numberlogic .nl-history-mode > summary::before { content: '+'; color: var(--oa-accent); }
.oa-numberlogic .nl-history-mode[open] > summary::before { content: '−'; }
.oa-numberlogic .nl-history-mode > summary span { margin-left: auto; font-size: 13px; color: var(--oa-muted); }
.oa-numberlogic .nl-history-mode .oa-table-scroll { max-height: 360px; box-shadow: none; }
.oa-numberlogic .oa-results-table th, .oa-numberlogic .oa-results-table td { font-size: 13px; padding: 12px; font-weight: 500; }
.oa-numberlogic .oa-solution summary { min-height: 36px; padding-block: 8px; }
.oa-numberlogic .oa-solution-steps p { font-size: 14px; }
.oa-numberlogic .nl-bottom-link { margin: 28px 0 0; }
.oa-numberlogic :is(#numberlogic-information, #numberlogic-history, #numberlogic-breakdown) { scroll-margin-top: calc(var(--oa-header-height, 78px) + 20px); }
.oa-numberlogic :is([data-nl-question], #numberlogic-history, #numberlogic-breakdown, #numberlogic-information):focus { outline: none; }
.oa-numberlogic .nl-noscript { padding: 24px; color: #86442f; text-align: center; }
@media (max-width: 620px) {
    .oa-numberlogic .oa-exam { padding: 20px 16px; gap: 16px; }
    .oa-numberlogic .oa-exam-centre { padding: 10px 0 16px; }
    .oa-numberlogic .nl-sequence { margin-bottom: 26px; gap: 8px 10px; }
    .oa-numberlogic .nl-term { gap: 8px; }
    .oa-numberlogic .oa-exam-answers { grid-template-columns: repeat(6, minmax(0, 1fr)); max-width: 440px; gap: 10px; }
    .oa-numberlogic .oa-exam-answer { min-height: 54px; grid-column: span 2; padding-inline: 8px; }
    .oa-numberlogic .oa-exam-answer:nth-child(4):nth-last-child(2) { grid-column: 2 / span 2; }
    .oa-numberlogic .oa-exam-answer:last-child:nth-child(5) { grid-column: 4 / span 2; }
    .oa-numberlogic .oa-lobby-links { gap: 12px 18px; }
    .oa-numberlogic .nl-instruction { font-size: 12px; margin-bottom: 14px; }
}
@media (max-height: 720px) {
    .oa-numberlogic .oa-exam { padding-block: 14px; gap: 12px; }
    .oa-numberlogic .oa-exam-centre { padding-block: 8px; }
    .oa-numberlogic .nl-sequence { margin-bottom: 22px; }
    .oa-numberlogic .oa-exam-keyboard { margin-top: 12px; }
}
@media (prefers-reduced-motion: reduce) {
    .oa-numberlogic *, .oa-numberlogic *::before, .oa-numberlogic *::after { animation: none !important; transition: none !important; scroll-behavior: auto !important; }
}
/* Compact phones retain comfortable controls; short landscape pages can scroll. */
@media (max-width: 620px) and (max-height: 740px) {
    .oa-numberlogic .oa-exam { padding: 12px 16px; gap: 8px; }
    .oa-numberlogic .oa-exam-centre { padding: 4px 0; }
    .oa-numberlogic .nl-instruction { font-size: 11px; margin-bottom: 10px; }
    .oa-numberlogic .nl-sequence { font-size: 23px; margin-bottom: 20px; gap: 6px 9px; }
    .oa-numberlogic .oa-exam-answer { min-height: 48px; padding-block: 9px; font-size: 18px !important; }
    .oa-numberlogic .oa-exam-keyboard { margin-top: 8px; font-size: 11px; }
    .oa-numberlogic .oa-exam-finish { min-height: 44px; }
    .oa-numberlogic .oa-exam-count { margin-bottom: 8px; }
    .oa-numberlogic .oa-exam-timer { margin-top: 8px; }
}

.oa-numberlogic [data-nl-band="improving"] .oa-result-score { color: #ff3347; }
.oa-numberlogic [data-nl-band="strong"] .oa-result-score { color: #a88400; }
.oa-numberlogic .nl-patterns { overflow-x: auto; }
.oa-numberlogic .nl-patterns td:nth-child(2) { min-width: 190px; font-variant-numeric: tabular-nums; }
.oa-numberlogic .nl-history-header { padding-top: 36px; }
.oa-numberlogic .nl-history-header h1 { font-size: clamp(28px, 4vw, 44px); }
.oa-numberlogic .nl-history-header h1 span { color: var(--oa-accent); }
.oa-numberlogic.nl-history-page .nl-history { border-top: 0; padding-top: 20px; }

/* Akuna Math numeric control, inside the unchanged NumberLogic workspace. */
.oa-app[data-oa-assessment="akuna_sequences"] .oa-numeric-input:focus-visible { outline: 2px solid var(--oa-blue, #4263ff); outline-offset: 3px; }
.oa-app[data-oa-assessment="akuna_sequences"] .oa-exam-numeric { margin-inline: auto; }