/* Revision Forge. Approved AI Labs style (see CLAUDE.md): Lessonsmith greens
   and gold, roomy white cards, numbered sections, one step at a time, shapes
   with every colour, a gold marker for the current step. Calm: soft
   backgrounds, gentle shadows, and no movement when calm mode or reduced
   motion is on. */
.rv-page { background: radial-gradient(900px 500px at 100% 0%, rgb(45 190 143 / .10), transparent 70%), radial-gradient(700px 500px at 0% 100%, rgb(244 200 66 / .08), transparent 70%), var(--bg); }
.skip { position: absolute; left: -9999px; top: 8px; z-index: 60; background: var(--chalk); color: var(--chalk-ink); padding: 10px 16px; border-radius: 12px; font-weight: 700; }
.skip:focus { left: 16px; }
.rv-main { padding-block: 26px 40px; max-width: 1440px; font-size: 1.08rem; }
.rv-main:focus { outline: none; }
.rv-brand { color: #FFFFFF; text-decoration: none; }
.rv-logo { width: 36px; height: 36px; border-radius: 10px; display: inline-grid; place-items: center; background: rgb(255 255 255 / .14); font-size: 1.3rem; }
.rv-board-chip { background: rgb(255 255 255 / .14); color: #FFFFFF; border: 1px solid rgb(255 255 255 / .35); border-radius: 999px; }
.rv-board-chip:hover:not(:disabled) { background: rgb(255 255 255 / .24); }
.rv-spec { font-family: var(--font-mono); font-size: .8rem; opacity: .85; }
.rv-page button:focus-visible, .rv-page a:focus-visible, .rv-page input:focus-visible, .rv-page select:focus-visible, .rv-page textarea:focus-visible, .rv-page summary:focus-visible { outline: 4px solid var(--chalk); outline-offset: 2px; }
.rv-page button, .rv-page select { min-height: 44px; }

/* Hero */
.rv-hero { grid-template-columns: auto minmax(0, 1fr); }
.rv-hero-icon { width: 120px; height: 120px; border-radius: 28px; display: grid; place-items: center; font-size: 4rem; background: rgb(255 255 255 / .14); border: 2px solid rgb(255 255 255 / .3); }
.rv-join-icon { margin: 0 auto 6px; background: var(--deep); width: 100px; height: 100px; font-size: 3.2rem; }
.rv-lead { margin: -6px 0 18px; }

/* Exam boards: shapes as well as colours */
.rv-boards { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 16px; }
.rv-board { display: grid; justify-items: center; gap: 6px; text-align: center; padding: 26px 18px; border-radius: 22px; border: 0; color: #FFFFFF; font-size: 1.05rem; box-shadow: 0 6px 0 rgb(0 0 0 / .16); min-height: 170px; }
.rv-board i { font-style: normal; font-size: 2rem; }
.rv-board b { font-family: var(--font-display); font-size: 1.6rem; }
.rv-b0 { background: #0E4D3E; } .rv-b1 { background: #137A5E; } .rv-b2 { background: #F4C842; color: #1B1A12; } .rv-b3 { background: #FFFFFF; color: #0E4D3E; box-shadow: inset 0 0 0 3px #137A5E, 0 6px 0 rgb(0 0 0 / .1); }
.rv-board[aria-pressed="true"] { outline: 5px solid var(--chalk); outline-offset: 3px; }
.rv-board:hover { filter: brightness(1.06); }

/* Today's 5 */
.rv-today-row { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 18px; align-items: center; background: var(--soft); border-radius: 20px; padding: 20px 24px; }
.rv-today-row p { margin: 0; font-size: 1.12rem; }
.rv-join-line { margin: 14px 0 0; }

/* Activity cards */
.rv-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
.rv-card { display: grid; grid-template-columns: auto minmax(0, 1fr); grid-template-rows: auto auto; gap: 6px 14px; align-items: center; text-align: left; padding: 18px; border-radius: 20px; border: 2px solid var(--line); background: var(--surface); color: var(--ink); box-shadow: 0 6px 18px rgb(14 77 62 / .06); font-weight: 400; }
.rv-card:hover:not(:disabled) { border-color: var(--accent); background: var(--soft); }
.rv-card-icon { grid-row: span 2; width: 58px; height: 58px; border-radius: 16px; display: grid; place-items: center; font-size: 1.9rem; background: var(--soft); }
.rv-card-text { display: grid; gap: 2px; }
.rv-card-text b { font-family: var(--font-display); font-size: 1.2rem; color: var(--deep); }
.rv-card-text small { color: var(--muted); font-size: .92rem; }
.rv-level { grid-column: 2; justify-self: start; font-size: .85rem; font-weight: 700; border-radius: 999px; padding: 2px 10px; background: var(--bg); color: var(--muted); border: 1px solid var(--line); }
.rv-l1 { background: #FFF6D6; color: #6B4E00; border-color: #E8C95A; }
.rv-l2 { background: var(--soft); color: var(--deep); border-color: var(--mint); }
.rv-l3 { background: var(--deep); color: #FFFFFF; border-color: var(--deep); }
.rv-coin .sc-card { margin-bottom: 8px; }

/* One step at a time */
.rv-run { display: grid; gap: 16px; }
.rv-run > *, .rv-coder > *, .rv-outs > * { min-width: 0; }
.rv-run-head { display: grid; gap: 12px; justify-items: start; }
.rv-run-title { display: flex; gap: 14px; align-items: center; }
.rv-run-title .rv-card-icon { grid-row: auto; width: 64px; height: 64px; background: var(--surface); box-shadow: 0 4px 12px rgb(14 77 62 / .12); }
.rv-run-title h1 { font-family: var(--font-display); font-size: clamp(1.7rem, 4vw, 2.5rem); margin: 0; line-height: 1.1; }
.rv-class-pill { background: var(--deep); color: #FFFFFF; border-radius: 999px; padding: 6px 14px; font-weight: 700; }
.rv-steps { list-style: none; margin: 0; padding: 0; display: grid; grid-auto-flow: column; grid-auto-columns: minmax(0, 1fr); gap: 8px; }
.rv-steps li { display: flex; align-items: center; gap: 8px; padding: 10px 12px; border-radius: 14px; background: var(--surface); border: 2px solid var(--line); font-weight: 600; font-size: .98rem; min-width: 0; }
.rv-steps li span { flex: none; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; background: var(--soft); color: var(--deep); font-weight: 700; }
.rv-steps li.done span { background: var(--accent); color: #FFFFFF; }
.rv-steps li.now { border-color: var(--chalk); background: #FFF9E6; box-shadow: 0 0 0 3px rgb(244 200 66 / .35); }
.rv-steps li.now span { background: var(--chalk); color: var(--chalk-ink); }
.rv-step { margin: 0; min-height: 280px; }
.rv-q { font-family: var(--font-display); font-size: clamp(1.4rem, 3vw, 1.9rem); margin: 0 0 10px; line-height: 1.2; }
.rv-instruct { font-size: 1.15rem; margin: 0 0 16px; }
.rv-task { font-size: 1.2rem; font-weight: 600; background: #FFF9E6; border-left: 6px solid var(--chalk); border-radius: 0 14px 14px 0; padding: 12px 16px; margin: 0 0 16px; }
.rv-count { font-family: var(--font-mono); color: var(--accent); margin: 0 0 6px; font-size: .9rem; }
.rv-why { font-size: 1.1rem; min-height: 1.5em; }
.rv-qnext { margin: 10px 0 0; }
.rv-nav { display: flex; justify-content: space-between; gap: 12px; }
.rv-nav [hidden] + .cta, .rv-nav #nextBtn { margin-left: auto; }
.rv-nav button:disabled { opacity: .45; }
.rv-stuck { margin-top: 18px; background: var(--soft); border-radius: 16px; padding: 4px 16px; }
.rv-stuck summary { cursor: pointer; font-weight: 700; padding: 10px 0; min-height: 44px; display: flex; align-items: center; }
.rv-safe { background: #FFF9E6; border-radius: 16px; padding: 14px 18px; border-left: 6px solid var(--chalk); }
.lab-options button.picked { outline: 4px solid var(--chalk); outline-offset: 2px; opacity: 1; }

/* Brain dump and points */
.rv-dump { width: 100%; font-size: 1.1rem; line-height: 1.6; border-radius: 16px; border: 2px solid var(--line); padding: 14px; background: var(--surface); color: var(--ink); font-family: var(--font-body); }
.rv-points { list-style: none; padding: 0; margin: 8px 0; display: grid; gap: 8px; }
.rv-points label { display: flex; gap: 12px; align-items: center; padding: 10px 14px; border-radius: 14px; background: var(--bg); border: 1px solid var(--line); min-height: 48px; cursor: pointer; }
.rv-points input { width: 24px; height: 24px; accent-color: var(--accent); flex: none; }

/* Flip cards */
.rv-flips { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.rv-flip { display: grid; gap: 8px; text-align: left; align-content: start; padding: 18px; border-radius: 20px; border: 2px dashed var(--accent); background: var(--surface); color: var(--ink); font-weight: 400; min-height: 120px; }
.rv-flip-q { font-weight: 700; font-size: 1.12rem; color: var(--deep); }
.rv-flip-a { font-size: 1.05rem; line-height: 1.5; }
.rv-flip-hint { justify-self: end; font-size: .85rem; color: var(--accent); font-weight: 700; }
.rv-flip.open { border-style: solid; background: var(--soft); }

/* How sure? Shapes as well as colours */
.rv-sure { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.rv-sure button { display: grid; justify-items: center; gap: 4px; padding: 18px 12px; border-radius: 18px; border: 0; font-size: 1rem; box-shadow: 0 4px 0 rgb(0 0 0 / .14); }
.rv-sure i { font-style: normal; font-size: 1.6rem; }
.rv-sure b { font-family: var(--font-display); font-size: 1.25rem; }
.rv-sure-green { background: #137A5E; color: #FFFFFF; } .rv-sure-gold { background: #F4C842; color: #1B1A12; } .rv-sure-white { background: #FFFFFF; color: #0E4D3E; box-shadow: inset 0 0 0 3px #137A5E, 0 4px 0 rgb(0 0 0 / .1); }
.rv-sure button[aria-pressed="true"] { outline: 5px solid var(--deep); outline-offset: 3px; }

/* Skills */
.rv-ideas { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 14px; margin-bottom: 8px; }
.rv-idea { background: var(--soft); border-radius: 20px; padding: 18px; }
.rv-idea > span { font-size: 2rem; }
.rv-idea h3 { font-family: var(--font-display); font-size: 1.25rem; margin: 6px 0 4px; color: var(--deep); }
.rv-idea p { margin: 0; line-height: 1.5; }
.rv-seg { display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 12px; }
.rv-seg button { border: 2px solid var(--line); background: var(--surface); border-radius: 14px; }
.rv-seg button[aria-pressed="true"] { background: var(--accent); color: #FFFFFF; border-color: var(--accent); }
.rv-made { background: #FFF9E6; border-radius: 16px; padding: 4px 18px; border-left: 6px solid var(--chalk); }
.rv-made:empty { display: none; }
.rv-sentence { font-family: var(--font-display); font-size: 1.3rem; padding: 14px 18px; }
.rv-words { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 8px; }
.rv-words span { background: var(--deep); color: #FFFFFF; border-radius: 12px; padding: 10px 16px; font-family: var(--font-display); font-size: 1.2rem; }
.rv-words.hidden-words span { color: transparent; background: var(--line); }
.rv-tries { display: flex; flex-wrap: wrap; gap: 8px; list-style: none; padding: 0; }
.rv-tries li { background: var(--soft); border-radius: 999px; padding: 6px 14px; font-weight: 700; }
.rv-when { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin-bottom: 12px; }
.rv-when label { display: grid; gap: 6px; font-weight: 700; }
.rv-when select { font-size: 1.05rem; padding: 10px; border-radius: 12px; border: 2px solid var(--line); background: var(--surface); color: var(--ink); }
.rv-ground { margin-top: 14px; background: var(--bg); border-radius: 16px; padding: 4px 16px; border: 1px solid var(--line); }
.rv-ground summary { cursor: pointer; font-weight: 700; min-height: 44px; display: flex; align-items: center; }

/* Box breathing: a dot travels round the square. Still in calm mode. */
.rv-box { position: relative; width: 180px; height: 180px; margin: 6px auto 12px; border: 6px solid var(--mint); border-radius: 22px; background: var(--soft); }
.rv-dot { position: absolute; width: 26px; height: 26px; border-radius: 50%; background: var(--chalk); border: 3px solid var(--deep); left: -16px; bottom: -16px; }
.rv-box.on .rv-dot { animation: rv-box 16s linear infinite; }
.rv-box.still .rv-dot, .a11y-calm .rv-dot { display: none; }
.rv-box.still[data-phase="0"], .rv-box.still[data-phase="2"] { border-color: var(--chalk); }
@keyframes rv-box { 0% { left: -16px; bottom: -16px; } 25% { left: -16px; bottom: calc(100% - 10px); } 50% { left: calc(100% - 10px); bottom: calc(100% - 10px); } 75% { left: calc(100% - 10px); bottom: -16px; } 100% { left: -16px; bottom: -16px; } }
.rv-breath { text-align: center; font-family: var(--font-display); font-size: 1.5rem; margin: 0 0 10px; }

/* Code */
.rv-code { background: #0B2A22; color: #E7F6EF; border-radius: 18px; padding: 14px 0; font-family: var(--font-mono); font-size: 15px; line-height: 1.8; overflow: auto; margin: 0 0 14px; }
.rv-ln { display: block; padding-right: 16px; white-space: pre; }
.rv-ln i { display: inline-block; width: 3em; padding-right: 1em; text-align: right; color: #7FA89A; font-style: normal; user-select: none; }
.rv-coder { display: grid; gap: 12px; }
.rv-coder .cd-editor { max-height: 60vh; }
.rv-outs { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 14px; }
.rv-outs h3 { margin: 0 0 6px; }
.rv-tests { list-style: none; padding: 0; display: grid; gap: 8px; }
.rv-tests li { padding: 10px 14px; border-radius: 14px; background: var(--bg); border: 1px solid var(--line); }
.rv-tests li.ok { background: var(--soft); border-color: var(--mint); }
.rv-tests li.no { background: #FFF4F2; border-color: #F2B8B5; }

/* Done */
.rv-done { text-align: center; display: grid; justify-items: center; gap: 6px; }
.rv-done h1 { font-family: var(--font-display); font-size: clamp(2rem, 5vw, 3rem); margin: 0; }
.rv-done-icon { font-size: 3.4rem; }
.rv-done-lead { font-size: 1.25rem; }
.rv-done .sc-card { text-align: left; max-width: 620px; }
.rv-wait { display: block; font-weight: 600; margin-bottom: 8px; }
.rv-end { max-width: min(620px, calc(100vw - 32px)); max-height: calc(100dvh - 32px); overflow: auto; }

.rv-foot { padding-block: 10px 40px; color: var(--muted); }
.rv-foot p { margin: 0 0 8px; }

@media (prefers-reduced-motion: reduce) { .rv-box.on .rv-dot { animation: none; display: none; } }
@media (max-width: 960px) {
  .rv-boards { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rv-outs { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 700px) {
  .rv-hero { grid-template-columns: minmax(0, 1fr); }
  .rv-hero-icon { width: 84px; height: 84px; font-size: 2.8rem; }
  .rv-today-row { grid-template-columns: minmax(0, 1fr); }
  .rv-flips, .rv-when { grid-template-columns: minmax(0, 1fr); }
  .rv-steps { grid-auto-flow: row; grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
  .rv-sure { grid-template-columns: minmax(0, 1fr); }
  .rv-board { min-height: 130px; padding: 18px 12px; }
  .rv-board b { font-size: 1.3rem; }
}
@media (max-width: 420px) { .rv-boards { grid-template-columns: minmax(0, 1fr); } }

/* Teacher console */
.rv-start { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)) auto; gap: 14px; align-items: end; }
.rv-start label, .rv-move label { display: grid; gap: 6px; font-weight: 700; }
.rv-start select, .rv-start input, .rv-move select { font-size: 1.02rem; padding: 10px; border-radius: 12px; border: 2px solid var(--line); background: var(--surface); color: var(--ink); min-height: 48px; width: 100%; }
.rv-how { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 14px; margin-bottom: 12px; }
.rv-how > div { background: var(--soft); border-radius: 20px; padding: 18px; }
.rv-how span { font-size: 2rem; }
.rv-how h3 { font-family: var(--font-display); font-size: 1.25rem; margin: 6px 0 4px; }
.rv-how p { margin: 0; }
.rv-session { border: 2px solid var(--line); border-radius: 22px; padding: 20px; margin-bottom: 16px; background: var(--surface); }
.rv-session.ended { background: var(--bg); }
.rv-session-head { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 20px; align-items: center; margin-bottom: 14px; }
.rv-code-box { display: grid; justify-items: center; background: var(--deep); color: #FFFFFF; border-radius: 20px; padding: 14px 22px; border-bottom: 6px solid var(--chalk); }
.rv-code-box .fine { color: #DDF3EA; }
.rv-code-box b { font-family: var(--font-mono); font-size: clamp(2rem, 5vw, 3rem); letter-spacing: .12em; }
.rv-session-act { font-size: 1.2rem; margin: 0 0 4px; }
.rv-session-info p { margin: 0 0 6px; }
.rv-link { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.rv-link code { background: var(--soft); border-radius: 8px; padding: 4px 8px; overflow-wrap: anywhere; }
.rv-join-short { background: #F3FAF6; border: 2px solid #2DBE8F; border-radius: 16px; padding: 10px 14px; font-size: 1.1rem; }
.rv-join-addr { font-family: var(--font-mono); font-size: 1.4rem; color: #0E4D3E; background: #F4C842; border-radius: 10px; padding: 2px 10px; overflow-wrap: anywhere; }
.rv-move { display: flex; flex-wrap: wrap; gap: 12px; align-items: end; margin-bottom: 14px; }
.rv-move label { flex: 1 1 320px; }
.rv-table-wrap { overflow-x: auto; }
.rv-table { width: 100%; border-collapse: collapse; }
.rv-table th, .rv-table td { text-align: left; padding: 10px 12px; border-bottom: 1px solid var(--line); vertical-align: middle; }
.rv-table thead th { font-size: .9rem; color: var(--muted); }
.rv-bar { display: inline-block; width: min(220px, 40vw); height: 14px; border-radius: 999px; background: var(--soft); overflow: hidden; vertical-align: middle; }
.rv-bar span { display: block; height: 100%; background: var(--accent); border-radius: 999px; }
.rv-bar-n { margin-left: 8px; font-family: var(--font-mono); font-size: .9rem; }
.rv-token { font-family: var(--font-mono); font-size: .92rem; background: #FFF9E6; border-radius: 8px; padding: 3px 8px; white-space: nowrap; }
@media (max-width: 1100px) { .rv-start { grid-template-columns: repeat(2, minmax(0, 1fr)); } .rv-how { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 700px) {
  .rv-start, .rv-how { grid-template-columns: minmax(0, 1fr); }
  .rv-session-head { grid-template-columns: minmax(0, 1fr); }
  .rv-table thead { display: none; }
  .rv-table tr { display: grid; gap: 4px; padding: 10px 0; border-bottom: 1px solid var(--line); }
  .rv-table th, .rv-table td { border: 0; padding: 2px 4px; }
}

/* ---------- Coins first: the glowing "Have a coin?" card and save buttons ---------- */
.rv-entry { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 22px; align-items: center; margin-bottom: 22px; padding: clamp(20px, 3vw, 30px); border-radius: 26px; background: linear-gradient(135deg, #FFF9E6, #FFFFFF 60%); border: 3px solid var(--chalk); box-shadow: 0 0 0 6px rgb(244 200 66 / .18), 0 14px 34px rgb(184 135 15 / .18); }
.rv-entry h2 { font-family: var(--font-display); font-size: clamp(1.5rem, 3.4vw, 2.1rem); margin: 0 0 6px; color: var(--deep); }
.rv-entry p { margin: 0 0 12px; font-size: 1.1rem; }
.rv-entry-coin { filter: drop-shadow(0 0 18px rgb(244 200 66 / .75)); }
.rv-entry-form { display: flex; flex-wrap: wrap; gap: 10px; }
.rv-entry-form input { flex: 1 1 260px; font-family: var(--font-mono); font-size: 1.1rem; padding: 12px 14px; border-radius: 14px; border: 2px solid var(--line); min-height: 52px; background: var(--surface); color: var(--ink); }
.rv-entry-or { margin: 10px 0 0 !important; }
.rv-upload { cursor: pointer; }
.rv-glow { background: var(--chalk); color: var(--chalk-ink); border: 0; border-radius: 16px; font-weight: 800; padding: 12px 20px; box-shadow: 0 0 0 4px rgb(244 200 66 / .35), 0 0 22px rgb(244 200 66 / .8); animation: rv-glow 2.4s ease-in-out infinite; }
.rv-glow.small { padding: 8px 14px; }
.rv-glow:hover:not(:disabled) { filter: brightness(1.05); }
@keyframes rv-glow { 50% { box-shadow: 0 0 0 7px rgb(244 200 66 / .22), 0 0 34px rgb(244 200 66 / 1); } }
.a11y-calm .rv-glow { animation: none; }
@media (prefers-reduced-motion: reduce) { .rv-glow { animation: none; } }

/* ---------- Topic cards with Learn / Quick / Exam ---------- */
.rv-topics { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 14px; }
.rv-topic { display: grid; gap: 10px; padding: 18px; border-radius: 20px; border: 2px solid var(--line); background: var(--surface); box-shadow: 0 6px 18px rgb(14 77 62 / .06); }
.rv-topic-head { display: flex; gap: 12px; align-items: center; }
.rv-topic-head .rv-card-icon { grid-row: auto; flex: none; }
.rv-topic h3 { font-family: var(--font-display); font-size: 1.2rem; margin: 0; color: var(--deep); }
.rv-topic small { color: var(--muted); font-size: .9rem; }
.rv-topic-go { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 6px; }
.rv-topic-go button { padding: 8px 6px; font-size: .92rem; font-weight: 700; border-radius: 12px; border: 2px solid var(--line); background: var(--bg); }
.rv-topic-go button:nth-child(1) { border-color: var(--mint); }
.rv-topic-go button:nth-child(2) { background: var(--soft); }
.rv-topic-go button:nth-child(3) { background: #FFF9E6; border-color: var(--chalk); }
.rv-topic-go button:nth-child(4) { background: #0E4D3E; color: #FFFFFF; border-color: #0E4D3E; }
.rv-card-foot { grid-column: 2; display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin: 0; }
.rv-topic .rv-card-foot { grid-column: auto; }
.rv-pbar { display: inline-block; width: 110px; height: 12px; border-radius: 999px; background: var(--soft); overflow: hidden; vertical-align: middle; border: 1px solid var(--line); }
.rv-pbar span { display: block; height: 100%; background: linear-gradient(90deg, var(--accent), var(--mint)); }
.rv-pnum { font-family: var(--font-mono); font-size: .85rem; font-weight: 600; }
.rv-learnt { font-size: .85rem; font-weight: 700; color: var(--deep); background: var(--soft); border-radius: 999px; padding: 2px 10px; }
.rv-two { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 28px; }
.rv-two .labs-section-title { font-size: clamp(1.3rem, 2.6vw, 1.6rem); }

/* ---------- Saving and summaries ---------- */
.rv-run-bar { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: space-between; width: 100%; }
.rv-save-pick { display: grid; gap: 10px; }
.rv-save-pick button { width: 100%; justify-content: center; }
.rv-summary-view { display: grid; gap: 18px; }
.rv-sum-title { font-family: var(--font-display); font-size: clamp(1.8rem, 4.5vw, 2.8rem); margin: 0; }
.rv-sum-grid { display: grid; grid-template-columns: minmax(280px, 380px) minmax(0, 1fr); gap: 20px; align-items: start; }
.rv-big-coin-card { position: sticky; top: 76px; display: grid; justify-items: center; text-align: center; gap: 6px; padding: 26px 20px; border-radius: 26px; color: #FFFFFF;
  background: radial-gradient(260px 200px at 50% 30%, rgb(244 200 66 / .45), transparent 70%), linear-gradient(160deg, var(--deep), var(--accent)); box-shadow: 0 16px 40px rgb(14 77 62 / .25); }
.rv-big-coin-card .fine { color: #DDF3EA; }
.rv-big-coin-card .sc-name { color: #FFFFFF; font-family: var(--font-display); font-size: 1.5rem; margin: 6px 0 0; }
.rv-big-coin { filter: drop-shadow(0 0 26px rgb(244 200 66 / .9)); animation: rv-coin-glow 3s ease-in-out infinite; }
@keyframes rv-coin-glow { 50% { filter: drop-shadow(0 0 40px rgb(244 200 66 / 1)); } }
.a11y-calm .rv-big-coin { animation: none; }
@media (prefers-reduced-motion: reduce) { .rv-big-coin { animation: none; } }
.rv-big-code { font-size: 1.15rem; letter-spacing: .04em; overflow-wrap: anywhere; }
.rv-sum-actions { justify-content: center; }
.rv-sum-actions button:not(.rv-glow) { background: rgb(255 255 255 / .14); color: #FFFFFF; border: 1px solid rgb(255 255 255 / .4); }
.rv-sum-detail { background: var(--surface); border: 1px solid var(--line); border-radius: 24px; padding: clamp(18px, 3vw, 28px); min-width: 0; box-shadow: 0 8px 26px rgb(14 77 62 / .06); }
.rv-sum-detail h2 { font-family: var(--font-display); margin: 0 0 8px; }
.rv-sum-table small { display: block; margin-top: 4px; }
.rv-prog { list-style: none; padding: 0; margin: 0 0 18px; display: grid; gap: 8px; }
.rv-prog li { display: grid; grid-template-columns: auto minmax(0, 1fr) auto auto auto; gap: 10px; align-items: center; padding: 8px 12px; border-radius: 14px; background: var(--bg); border: 1px solid var(--line); }
.rv-prog .rv-card-icon { grid-row: auto; width: 40px; height: 40px; font-size: 1.3rem; }
.rv-prog-name { font-weight: 700; }
.rv-answers { margin: 14px 0; background: var(--bg); border: 1px solid var(--line); border-radius: 16px; padding: 4px 16px; }
.rv-answers summary { cursor: pointer; font-weight: 700; min-height: 44px; display: flex; align-items: center; }
.rv-answer { border-top: 1px solid var(--line); padding: 10px 0; }
.rv-answer p { margin: 2px 0; }
.rv-a { white-space: pre-wrap; background: var(--surface); border-radius: 10px; padding: 8px 12px; }
.rv-mk { font-family: var(--font-mono); font-weight: 700; color: var(--accent); }

/* ---------- Exam practice ---------- */
.rv-noselect { -webkit-user-select: none; user-select: none; }
.rv-exam-meta { display: flex; gap: 10px; align-items: center; margin: 0 0 6px; }
.rv-cmd { display: inline-block; background: var(--deep); color: #FFFFFF; border-radius: 8px; padding: 2px 10px; font-weight: 700; font-size: .9rem; }
.rv-marks { font-family: var(--font-mono); font-weight: 700; }
.rv-cmd-tip { background: var(--soft); border-radius: 12px; padding: 10px 14px; }
.rv-ans-label { display: block; font-weight: 700; margin: 10px 0 6px; }
.rv-exam-ans { background: repeating-linear-gradient(transparent, transparent 31px, var(--line) 32px); line-height: 32px; padding-top: 4px; }
.rv-improve { background: #FFF9E6; border-left: 6px solid var(--chalk); border-radius: 0 16px 16px 0; padding: 6px 16px; margin-bottom: 10px; }
.rv-your { background: var(--bg); border-radius: 14px; padding: 6px 16px; border: 1px solid var(--line); }
.rv-your p { white-space: pre-wrap; }
.rv-score { font-size: 1.3rem; }
.rv-exam-list { padding-left: 20px; display: grid; gap: 6px; }

/* ---------- Learn ---------- */
.rv-why-hero { display: flex; gap: 18px; align-items: center; }
.rv-big-icon { font-size: 3.4rem; width: 96px; height: 96px; flex: none; border-radius: 26px; display: grid; place-items: center; background: var(--soft); }
.rv-plan-list { display: grid; gap: 6px; font-size: 1.1rem; }
.rv-learn-text { font-size: 1.2rem; line-height: 1.6; max-width: 70ch; }
.rv-ltable { width: 100%; border-collapse: separate; border-spacing: 0; margin: 10px 0; border-radius: 16px; overflow: hidden; border: 1px solid var(--line); }
.rv-ltable th, .rv-ltable td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--line); vertical-align: top; }
.rv-ltable thead th { background: var(--deep); color: #FFFFFF; }
.rv-ltable tbody th { background: var(--soft); }
.rv-flow { list-style: none; counter-reset: fl; padding: 0; display: grid; gap: 8px; margin: 10px 0; }
.rv-flow li { counter-increment: fl; position: relative; padding: 10px 14px 10px 52px; background: var(--soft); border-radius: 14px; }
.rv-flow li::before { content: counter(fl); position: absolute; left: 12px; top: 8px; width: 28px; height: 28px; border-radius: 50%; display: grid; place-items: center; background: var(--chalk); color: var(--chalk-ink); font-weight: 700; }
.rv-icons { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 10px; margin: 10px 0; }
.rv-icons > div { display: grid; gap: 2px; padding: 14px; border-radius: 16px; background: var(--soft); }
.rv-icons span { font-size: 1.8rem; }
.rv-icons small { color: var(--muted); }
.rv-check { margin-top: 16px; padding: 14px 16px; border-radius: 18px; border: 2px dashed var(--mint); }
.rv-check h3 { margin: 0 0 4px; }
.rv-check-q { font-weight: 700; font-size: 1.12rem; }
.rv-words-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 10px; margin: 0 0 14px; }
.rv-words-list div { background: var(--soft); border-radius: 14px; padding: 10px 14px; }
.rv-words-list dt { font-weight: 800; color: var(--deep); }
.rv-words-list dd { margin: 2px 0 0; }
.rv-summary { font-size: 1.2rem; display: grid; gap: 8px; }

/* ---------- Learn widgets ---------- */
.rv-widget { margin: 12px 0; padding: 16px; border-radius: 20px; background: var(--bg); border: 1px solid var(--line); }
.rv-bits { display: grid; grid-template-columns: repeat(8, minmax(0, 1fr)); gap: 6px; }
.rv-bits button { display: grid; justify-items: center; gap: 2px; padding: 8px 2px; border-radius: 12px; border: 2px solid var(--line); background: var(--surface); }
.rv-bits button small { font-family: var(--font-mono); color: var(--muted); font-size: .8rem; }
.rv-bits button b { font-size: 1.6rem; font-family: var(--font-mono); }
.rv-bits button[aria-pressed="true"] { background: var(--deep); color: #FFFFFF; border-color: var(--deep); }
.rv-bits button[aria-pressed="true"] small { color: #DDF3EA; }
.rv-bits-out { font-size: 1.15rem; margin: 10px 0 0; }
.rv-gate { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin: 10px 0; }
.rv-gate [data-in] { border: 2px solid var(--line); background: var(--surface); font-family: var(--font-mono); font-weight: 700; }
.rv-gate [data-in][aria-pressed="true"] { background: var(--chalk); color: var(--chalk-ink); border-color: var(--chalk); }
.rv-gate-name { font-family: var(--font-display); font-size: 1.3rem; padding: 6px 14px; border-radius: 12px; background: var(--deep); color: #FFFFFF; }
.rv-lamp { font-weight: 800; padding: 8px 14px; border-radius: 999px; background: var(--surface); border: 2px solid var(--line); }
.rv-lamp.on { background: #FFF2B8; border-color: var(--chalk); box-shadow: 0 0 18px rgb(244 200 66 / .8); }
.rv-tt { border-collapse: collapse; font-family: var(--font-mono); }
.rv-tt th, .rv-tt td { border: 1px solid var(--line); padding: 6px 14px; text-align: center; }
.rv-tt tr.now td { background: var(--chalk); font-weight: 700; }
.rv-search-pick { display: inline-flex; gap: 8px; align-items: center; font-weight: 700; }
.rv-search-pick select { font-size: 1rem; padding: 6px; border-radius: 10px; }
.rv-search-label { margin: 12px 0 4px; }
.rv-search { display: grid; grid-template-columns: repeat(15, minmax(0, 1fr)); gap: 4px; }
.rv-search span { text-align: center; font-family: var(--font-mono); font-size: .85rem; padding: 6px 0; border-radius: 8px; background: var(--surface); border: 1px solid var(--line); }
.rv-search span.seen { background: var(--chalk); border-color: var(--chalk); }
.rv-search span.hit { background: var(--accent); color: #FFFFFF; border-color: var(--accent); }
.rv-fde-stage b { padding: 4px 10px; border-radius: 10px; background: var(--surface); border: 1px solid var(--line); }
.rv-fde-stage b.now { background: var(--chalk); border-color: var(--chalk); }
.rv-regs { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; }
.rv-regs div { display: grid; justify-items: center; padding: 10px 4px; border-radius: 14px; background: var(--deep); color: #FFFFFF; }
.rv-regs small { color: #DDF3EA; font-family: var(--font-mono); }
.rv-regs b { font-family: var(--font-mono); font-size: 1.2rem; }

/* ---------- Practice papers ---------- */
.rv-pb fieldset { border: 0; padding: 0; margin: 0 0 14px; }
.rv-pb legend { font-weight: 800; margin-bottom: 8px; font-size: 1.1rem; }
.rv-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.rv-chip { display: inline-flex; gap: 8px; align-items: center; padding: 8px 14px; border-radius: 999px; border: 2px solid var(--line); background: var(--surface); min-height: 44px; cursor: pointer; }
.rv-chip:has(input:checked) { background: var(--soft); border-color: var(--accent); font-weight: 700; }
.rv-chip input { width: 20px; height: 20px; accent-color: var(--accent); }
.rv-paper { display: grid; gap: 10px; padding-left: 26px; font-size: 1.08rem; }

/* ---------- The code editor on phones ---------- */
.rv-scroll { display: inline-flex; gap: 4px; }
.rv-scroll button { min-width: 48px; }
.rv-rotate { display: none; margin: -4px 0 6px; }
@media (max-width: 700px) and (orientation: portrait) { .rv-rotate { display: block; } }
.rv-coder.full { position: fixed; inset: 0; z-index: 80; background: var(--surface); padding: 12px; overflow: auto; }
.rv-coder.full .cd-editor { max-height: none; }
body.rv-noscroll { overflow: hidden; }

@media (max-width: 860px) {
  .rv-sum-grid, .rv-two { grid-template-columns: minmax(0, 1fr); }
  .rv-big-coin-card { position: static; }
}
@media (max-width: 700px) {
  .rv-entry { grid-template-columns: minmax(0, 1fr); justify-items: center; text-align: center; }
  .rv-entry-form { justify-content: center; }
  .rv-prog li { grid-template-columns: auto minmax(0, 1fr) auto; }
  .rv-prog li .rv-level { display: none; }
  .rv-search { grid-template-columns: repeat(8, minmax(0, 1fr)); }
  .rv-regs { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rv-why-hero { flex-direction: column; align-items: flex-start; }
  .rv-pbar { width: 80px; }
}

/* ---------- Printing a paper or mark scheme ---------- */
#rvPrint { display: none; }
@media print {
  body.rv-printing > *:not(#rvPrint) { display: none !important; }
  body.rv-printing { background: #FFFFFF !important; }
  body.rv-printing #rvPrint { display: block; color: #000000; font-family: var(--font-body); font-size: 12pt; }
  #rvPrint h1 { font-family: var(--font-display); font-size: 20pt; margin: 4pt 0; }
  #rvPrint .pp-brand { font-size: 10pt; color: #0E4D3E; margin: 0; }
  #rvPrint .pp-head { border-bottom: 2pt solid #0E4D3E; padding-bottom: 8pt; margin-bottom: 12pt; }
  #rvPrint .pp-instr { font-size: 10pt; }
  #rvPrint .pp-q { break-inside: avoid; margin-bottom: 14pt; }
  #rvPrint .pp-qhead { margin: 0; }
  #rvPrint .pp-cmd { font-weight: 700; }
  #rvPrint .pp-marks { float: right; font-weight: 700; }
  #rvPrint .pp-lines span { display: block; height: 24pt; border-bottom: 1pt solid #999999; }
  #rvPrint .pp-ms { border-left: 3pt solid #137A5E; padding-left: 8pt; }
  #rvPrint .pp-foot { margin-top: 18pt; font-size: 9pt; color: #444444; border-top: 1pt solid #999999; padding-top: 6pt; }
}
.rv-pwrap { display: inline-flex; align-items: center; gap: 6px; white-space: nowrap; }

/* ---------- Teacher: checking coins and the exam builder ---------- */
.rv-check-in { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: 16px; align-items: start; }
.rv-check-in label { display: grid; gap: 6px; font-weight: 700; }
.rv-check-in textarea, .rv-built textarea, .rv-built input, .rv-built select { width: 100%; font: inherit; padding: 10px; border-radius: 12px; border: 2px solid var(--line); background: var(--surface); color: var(--ink); }
.rv-check-in textarea { font-family: var(--font-mono); }
.rv-pupil { border: 2px solid var(--line); border-radius: 20px; padding: 16px; margin-bottom: 12px; background: var(--surface); }
.rv-pupil.bad { border-color: #F2B8B5; background: #FFF4F2; }
.rv-pupil h3 { margin: 0; font-family: var(--font-display); }
.rv-code-note { margin: 10px 0 0; padding: 10px 14px; border-radius: 14px; background: #FFF8E1; border-left: 5px solid var(--chalk); color: var(--ink); }
.rv-pupil-head { display: flex; gap: 14px; align-items: flex-start; }
.rv-pupil-head p { margin: 2px 0; }
.rv-pupil details { margin-top: 10px; background: var(--bg); border-radius: 14px; padding: 4px 14px; border: 1px solid var(--line); }
.rv-pupil summary { cursor: pointer; font-weight: 700; min-height: 44px; display: flex; align-items: center; }
.rv-flag { display: inline-block; margin-top: 6px; border-radius: 999px; padding: 4px 12px; font-weight: 700; font-size: .92rem; }
.rv-flag.pair { background: var(--soft); color: var(--deep); }
.rv-flag.dupe { background: #FFE4E1; color: #8A1C14; }
.rv-pupil-papers { margin-top: 10px; display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.rv-paper-chip { display: inline-flex; gap: 6px; align-items: center; background: #FFF9E6; border-radius: 999px; padding: 4px 6px 4px 12px; font-family: var(--font-mono); }
.rv-build { grid-template-columns: repeat(4, minmax(0, 1fr)) auto; }
.rv-build-topics { grid-column: 1 / -1; border: 0; padding: 0; margin: 0; }
.rv-build-topics legend { font-weight: 700; margin-bottom: 6px; }
.rv-built { margin-top: 18px; border-top: 2px solid var(--line); padding-top: 16px; }
.rv-built-title { display: grid; gap: 6px; font-weight: 700; margin-bottom: 8px; }
.rv-built-meta { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: 12px; }
@media (max-width: 700px) { .rv-built-meta { grid-template-columns: minmax(0, 1fr); } }
.rv-built-list { display: grid; gap: 12px; padding-left: 24px; }
.rv-built-list li { background: var(--bg); border: 1px solid var(--line); border-radius: 16px; padding: 12px; }
.rv-built-row { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; margin-bottom: 8px; }
.rv-built-row select { width: auto; }
.rv-built-marks { display: inline-flex; gap: 6px; align-items: center; font-weight: 700; }
.rv-built-marks input { width: 72px; }
.rv-built-act { margin-left: auto; display: inline-flex; gap: 6px; }
.rv-built textarea + textarea { margin-top: 6px; background: #FFF9E6; }
@media (max-width: 860px) { .rv-check-in, .rv-build { grid-template-columns: minmax(0, 1fr); } .rv-built-act { margin-left: 0; } }
.rv-build .rv-chip { display: inline-flex; font-weight: 600; }

/* ---------- Subjects, Plus and class tokens ---------- */
.rv-subjects { display: grid; gap: 10px; }
.rv-subject { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 2px 14px; align-items: center; padding: 14px 16px; border-radius: 18px; border: 2px solid var(--line); background: var(--surface); color: var(--ink); text-decoration: none; }
.rv-subject > span { grid-row: span 3; font-size: 2rem; }
.rv-subject b { font-family: var(--font-display); font-size: 1.15rem; color: var(--deep); }
.rv-subject small { color: var(--muted); }
.rv-subject.now { border-color: var(--chalk); background: #FFF9E6; }
.rv-subject:hover, .rv-subject:focus-visible { border-color: var(--accent); }
.rv-subject-prog { font-weight: 700; color: var(--accent) !important; }
.rv-pass-chip { background: var(--chalk); color: var(--chalk-ink); }
.rv-plus-note { background: #FFF9E6; border: 2px solid var(--chalk); border-radius: 18px; padding: 12px 16px; margin: -6px 0 16px; display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.rv-topic { position: relative; }
.rv-free-tag { justify-self: start; background: var(--chalk); color: var(--chalk-ink); border-radius: 999px; padding: 2px 10px; font-size: .8rem; font-weight: 800; }
.rv-locked { background: var(--bg); border-style: dashed; }
.rv-locked h3 { color: var(--muted); }
.rv-topic-go.rv-one { grid-template-columns: minmax(0, 1fr); }
.rv-extract { margin: 6px 0 12px; padding: 14px 18px; border-left: 6px solid var(--mint); background: var(--bg); border-radius: 0 16px 16px 0; font-size: 1.08rem; line-height: 1.6; white-space: pre-line; }

/* ---------- Teacher: Plus and class tokens ---------- */
.rv-plus { border: 3px solid var(--chalk); background: linear-gradient(135deg, #FFF9E6, var(--surface) 55%); }
.rv-plus-grid { display: grid; grid-template-columns: auto minmax(0, 1fr); gap: 28px; align-items: center; }
.rv-plus-on { font-size: 1.15rem; }
.rv-price-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; margin: 12px 0; }
.rv-price { display: grid; gap: 6px; justify-items: start; padding: 16px; border-radius: 18px; background: var(--surface); border: 2px solid var(--line); }
.rv-price b { font-family: var(--font-display); font-size: 1.8rem; color: var(--deep); }
.rv-tok-how { background: var(--soft); border-radius: 16px; padding: 4px 16px; margin-bottom: 14px; }
.rv-tok-form { grid-template-columns: repeat(3, minmax(0, 1fr)) auto; }
.rv-tok-form input[type="file"] { padding: 8px; }
.rv-class { border: 2px solid var(--line); border-radius: 18px; padding: 14px 16px; margin-top: 12px; background: var(--surface); }
.rv-class h3 { margin: 0; font-family: var(--font-display); }
.rv-class-view:empty { display: none; }
.rv-class-view { margin-top: 10px; }
@media (max-width: 860px) { .rv-plus-grid, .rv-price-row, .rv-tok-form { grid-template-columns: minmax(0, 1fr); } .rv-plus-grid .rv-token-art { justify-self: center; } }

/* Subjects, always in view on the pupil page. */
.rv-subject-strip { display: grid; gap: 10px; margin: 0 0 22px; padding: 16px 18px; border-radius: 24px; background: var(--surface); border: 1px solid var(--line); box-shadow: 0 8px 26px rgb(14 77 62 / .06); }
.rv-strip-label { font-family: var(--font-display); font-weight: 700; font-size: 1.2rem; color: var(--deep); }
.rv-strip { display: flex; flex-wrap: wrap; gap: 8px; }
.rv-strip-pill { display: inline-flex; align-items: center; gap: 6px; min-height: 44px; padding: 6px 14px; border-radius: 999px; border: 2px solid var(--line); background: var(--surface); color: var(--ink); font-weight: 700; text-decoration: none; }
.rv-strip-pill small { font-weight: 600; color: var(--muted); }
.rv-strip-pill:hover { border-color: var(--accent); background: var(--soft); }
.rv-strip-pill.now { background: var(--deep); color: #FFFFFF; border-color: var(--chalk); }
.rv-strip-pill.now small { color: #DDF3EA; }
.rv-strip-pill:focus-visible { outline: 4px solid var(--chalk); outline-offset: 3px; }

/* Revise with friends: a small, simple group page. */
.rv-friends h1 { font-family: var(--font-display); margin: 0 0 14px; }
.rv-f-code { display: grid; gap: 4px; justify-items: start; padding: 16px 20px; border-radius: 20px; background: var(--deep); color: #FFFFFF; margin-bottom: 14px; }
.rv-f-code span { font-family: var(--font-mono); font-size: .8rem; letter-spacing: .12em; text-transform: uppercase; color: #DDF3EA; }
.rv-f-code b { font-family: var(--font-mono); font-size: clamp(2rem, 7vw, 2.8rem); letter-spacing: .18em; color: var(--chalk); }
.rv-f-code small { color: #DDF3EA; font-size: .95rem; }
.rv-f-topic { font-size: 1.1rem; }
.rv-f-list { list-style: none; padding: 0; margin: 0 0 16px; display: grid; gap: 8px; }
.rv-f-list li { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; justify-content: space-between; padding: 10px 14px; border-radius: 14px; background: var(--soft); }
.rv-f-name { font-weight: 700; }
.rv-f-name small { font-weight: 600; color: var(--muted); }
.rv-f-steps { display: inline-flex; gap: 5px; }
.rv-f-steps i { width: 16px; height: 16px; border-radius: 50%; border: 2px solid var(--accent); background: var(--surface); }
.rv-f-steps i.on { background: var(--accent); }
.rv-f-space { color: var(--muted); font-style: italic; background: transparent !important; border: 2px dashed var(--line); }
.rv-friends select { min-height: 44px; border-radius: 12px; padding: 6px 10px; max-width: 100%; }
.rv-friends-pill { background: var(--soft); border-color: var(--accent); font-weight: 700; }

/* ---------- Teacher: exam paper export, branding and tasks for pupils ---------- */
.rv-export { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; margin: 18px 0 8px; }
.rv-export > div { background: var(--bg); border: 1px solid var(--line); border-radius: 20px; padding: 16px; }
.rv-export h3 { margin: 0 0 8px; font-family: var(--font-display); color: var(--deep); }
.rv-export .fine { margin: 6px 0 0; }
.rv-pbrand { margin: 0 0 16px; }
.rv-brand-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; background: var(--soft); border: 1px solid var(--line); border-radius: 20px; padding: 12px 16px; }
.rv-brand-row.locked { background: var(--bg); border-style: dashed; }
.rv-brand-row > div { flex: 1 1 260px; min-width: 0; }
.rv-brand-row p { margin: 2px 0 0; }
details.rv-brand-row { display: block; }
details.rv-brand-row summary { display: flex; gap: 14px; align-items: center; cursor: pointer; min-height: 44px; list-style: none; }
details.rv-brand-row summary::-webkit-details-marker { display: none; }
.rv-brand-icon, .rv-brand-prev { flex: none; display: grid; place-items: center; width: 56px; height: 56px; border-radius: 14px; background: var(--surface); border: 1px solid var(--line); font-size: 1.6rem; overflow: hidden; }
.rv-brand-prev img { max-width: 52px; max-height: 52px; object-fit: contain; }
.rv-brand-form { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; margin-top: 12px; }
.rv-brand-form label:first-child { display: grid; gap: 4px; font-weight: 700; flex: 1 1 260px; }
.rv-brand-form input[type=text], .rv-brand-form input:not([type]) { font: inherit; padding: 10px; border-radius: 12px; border: 2px solid var(--line); background: var(--surface); color: var(--ink); }
.rv-brand-toggle { display: inline-flex; gap: 8px; align-items: center; font-weight: 700; min-height: 44px; }
.rv-task { border: 2px solid var(--line); border-radius: 20px; padding: 16px; margin-bottom: 12px; background: var(--surface); }
.rv-task.ended { opacity: .8; background: var(--bg); }
.rv-task-head { display: flex; flex-wrap: wrap; gap: 12px; justify-content: space-between; align-items: flex-start; }
.rv-task-head h3 { margin: 0; font-family: var(--font-display); }
.rv-task-head p { margin: 4px 0 0; }
.rv-task-stats { display: flex; flex-wrap: wrap; gap: 8px; }
.rv-task-stats span { background: var(--soft); border-radius: 999px; padding: 6px 12px; }
.rv-task-note { background: #FFF6D6; border: 2px solid var(--chalk); border-radius: 14px; padding: 10px 14px; font-weight: 600; }
.rv-assign { max-width: 620px; width: calc(100% - 32px); border: 0; border-radius: 24px; padding: 24px; }
.rv-assign::backdrop { background: rgb(14 77 62 / .45); }
.rv-assign h2 { margin: 0; font-family: var(--font-display); }
.rv-assign-to { border: 0; padding: 0; margin: 0; display: grid; gap: 8px; }
.rv-assign-to legend { font-weight: 700; margin-bottom: 6px; }
.rv-assign-to .rv-chip { display: flex; gap: 10px; align-items: center; min-height: 44px; }
.rv-assign-days { display: inline-flex; gap: 8px; align-items: center; font-weight: 700; }
@media (max-width: 860px) { .rv-export { grid-template-columns: minmax(0, 1fr); } }

/* ---------- Pupil: tasks from the teacher ---------- */
.rv-tasks-banner { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; background: #FFF9E6; border: 3px solid var(--chalk); border-radius: 22px; padding: 14px 18px; margin: 0 0 18px; }
.rv-tasks-banner b { font-family: var(--font-display); font-size: 1.15rem; color: var(--deep); }
.rv-tasks-banner .grow { flex: 1 1 200px; }
.rv-task-pick { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; background: var(--surface); border: 1px solid var(--line); border-radius: 16px; padding: 8px 8px 8px 14px; flex: 1 1 280px; }
.rv-task-pick > span { flex: 1 1 160px; font-weight: 700; color: var(--deep); }
.rv-task-pick small { font-weight: 400; color: var(--muted); }
.rv-tq { background: var(--surface); border: 1px solid var(--line); border-radius: 24px; padding: clamp(18px, 3vw, 30px); box-shadow: 0 8px 26px rgb(14 77 62 / .06); }
.rv-tq-head { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; align-items: baseline; }
.rv-tq-num { font-family: var(--font-mono); color: var(--accent); font-weight: 700; }
.rv-tq-text { font-size: 1.2rem; line-height: 1.55; white-space: pre-line; margin: 10px 0 14px; }
.rv-tq-marks { background: var(--soft); border-radius: 999px; padding: 4px 12px; font-weight: 700; }
.rv-tq textarea { width: 100%; min-height: 160px; font: inherit; font-size: 1.08rem; padding: 12px; border-radius: 14px; border: 2px solid var(--line); background: var(--surface); color: var(--ink); }
.rv-tq textarea:focus-visible { outline: 3px solid var(--chalk); outline-offset: 2px; }
.rv-tq-dots { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 14px; padding: 0; list-style: none; }
.rv-tq-dots li { width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; background: var(--bg); border: 2px solid var(--line); font-weight: 700; font-size: .9rem; }
.rv-tq-dots li.done { background: var(--soft); border-color: var(--accent); color: var(--deep); }
.rv-tq-dots li.now { background: var(--chalk); border-color: var(--chalk); color: var(--chalk-ink); }
.rv-tq-mark { border-top: 1px solid var(--line); padding: 14px 0; }
.rv-tq-mark .rv-a { background: var(--bg); border-radius: 12px; padding: 10px 12px; white-space: pre-line; }
.rv-tq-mark ul { margin: 6px 0; }
.rv-tq-pick { display: flex; flex-wrap: wrap; gap: 6px; }
.rv-tq-pick button { min-width: 44px; min-height: 44px; }
.rv-tq-pick button[aria-pressed="true"] { background: var(--deep); color: #FFFFFF; border-color: var(--deep); }

/* A level: grouped subject strip, hint ladder, model answers and reels. */
.rv-strip-group { flex-basis: 100%; font-family: var(--font-mono); font-size: .8rem; letter-spacing: .1em; text-transform: uppercase; color: var(--accent); font-weight: 700; margin-top: 4px; }
.rv-subjects-head { font-family: var(--font-display); color: var(--deep); margin: 16px 0 8px; }
.rv-hint-list { display: grid; gap: 8px; padding-left: 1.4em; margin: 8px 0; }
.rv-hint-list li { padding: 8px 12px; border-radius: 12px; background: var(--surface); border-left: 4px solid var(--chalk); }
.rv-hint-list li:focus { outline: 4px solid var(--chalk); outline-offset: 2px; }
.rv-model { margin: 16px 0; padding: 16px 18px; border-radius: 20px; background: var(--soft); border: 2px solid var(--line); }
.rv-model h3, .rv-model h4 { font-family: var(--font-display); color: var(--deep); margin: 0 0 8px; }
.rv-model h4 { margin-top: 12px; }
.rv-model-text { line-height: 1.7; background: var(--surface); padding: 14px 16px; border-radius: 14px; margin: 0; }
.rv-model-notes { list-style: none; padding: 0; display: grid; gap: 6px; grid-template-columns: repeat(auto-fill, minmax(220px, 1fr)); }
.rv-model-notes li { padding: 8px 12px; border-radius: 12px; background: var(--surface); font-weight: 600; color: var(--deep); }
.rv-reel { margin: 14px 0; padding: 16px; border-radius: 24px; background: linear-gradient(135deg, #0E4D3E, #137A5E); color: #FFFFFF; box-shadow: 0 10px 30px rgb(14 77 62 / .18); }
.rv-reel figcaption { font-family: var(--font-display); font-weight: 700; font-size: 1.15rem; margin-bottom: 10px; }
.rv-reel-frames { list-style: none; padding: 0; margin: 0; min-height: 150px; display: grid; }
.rv-reel-frames li { grid-area: 1 / 1; display: none; align-items: center; gap: 16px; padding: 16px 18px; border-radius: 18px; background: rgb(255 255 255 / .1); border: 2px solid rgb(244 200 66 / .5); }
.rv-reel-frames li.on { display: flex; animation: rv-reel-in .45s ease-out; }
.rv-reel-frames li span { font-size: 3rem; flex: none; }
.rv-reel-frames li p { margin: 0; font-size: 1.2rem; line-height: 1.5; }
.rv-reel.all .rv-reel-frames { gap: 8px; }
.rv-reel.all .rv-reel-frames li { grid-area: auto; display: flex; }
.rv-reel-bar { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; margin-top: 12px; }
.rv-reel-bar button { min-height: 44px; min-width: 44px; background: #FFFFFF; color: var(--deep); border: 2px solid var(--chalk); }
.rv-reel-bar button:focus-visible { outline: 4px solid var(--chalk); outline-offset: 3px; }
.rv-reel-count { font-family: var(--font-mono); color: #DDF3EA; margin-left: auto; }
@keyframes rv-reel-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
.a11y-calm .rv-reel-frames li.on { animation: none; }
@media (prefers-reduced-motion: reduce) { .rv-reel-frames li.on { animation: none; } }
@media (max-width: 560px) { .rv-reel-frames li span { font-size: 2.2rem; } .rv-reel-frames li p { font-size: 1.05rem; } }

/* Drawing and handwriting pad (practice tests and marking). */
.ink { display: grid; gap: 8px; }
.ink-bar { display: flex; flex-wrap: wrap; gap: 8px; padding: 8px; border-radius: 16px; background: var(--soft); border: 1px solid var(--line); }
.ink-group { display: inline-flex; flex-wrap: wrap; gap: 4px; padding-right: 8px; border-right: 1px solid var(--line); }
.ink-group:last-child { border-right: 0; }
.ink-bar button, .ink-stamps button { min-height: 44px; min-width: 44px; display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 4px 10px; border-radius: 12px; border: 2px solid transparent; background: var(--surface); color: var(--ink); font-weight: 700; cursor: pointer; }
.ink-bar button[aria-pressed="true"], .ink-stamps button[aria-pressed="true"] { border-color: var(--chalk); background: #FFF8E1; }
.ink-bar button:focus-visible, .ink-stamps button:focus-visible { outline: 4px solid var(--chalk); outline-offset: 2px; }
.ink-bar button i { width: 14px; height: 14px; border-radius: 50%; display: inline-block; border: 1px solid rgb(0 0 0 / .2); }
.ink-lbl { font-size: .85rem; }
.ink-dot { display: inline-block; border-radius: 50%; background: var(--ink); }
.ink-dot.s1 { width: 6px; height: 6px; }
.ink-dot.s2 { width: 12px; height: 12px; }
.ink-stamps { display: flex; flex-wrap: wrap; gap: 6px; }
.ink-stamps button { font-size: 1rem; color: #B42318; }
.ink-area { border: 2px solid var(--line); border-radius: 16px; overflow: hidden; background: #fff; }
.ink-canvas { display: block; width: 100%; touch-action: none; cursor: crosshair; }
@media (max-width: 700px) { .ink-lbl { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); } .ink-group { border-right: 0; } }

/* Practice tests: one question at a time, like a real paper. */
.pt-top { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 10px; }
.pt-clock { font: 700 1.1rem var(--font-mono); background: var(--deep); color: var(--chalk); padding: 8px 14px; border-radius: 999px; }
.pt-dot { min-width: 44px; min-height: 44px; border-radius: 50%; border: 2px solid var(--line); background: var(--surface); font-weight: 700; cursor: pointer; }
.pt-dot.done { background: var(--soft); border-color: var(--accent); }
.pt-dot.now { background: var(--chalk); border-color: var(--chalk); color: var(--chalk-ink); }
.pt-dot:focus-visible { outline: 4px solid var(--chalk); outline-offset: 2px; }
.pt-q { background: var(--surface); border: 1px solid var(--line); border-radius: 24px; padding: clamp(14px, 3vw, 26px); box-shadow: 0 8px 26px rgb(14 77 62 / .06); }
.pt-modes { display: flex; flex-wrap: wrap; gap: 8px; margin: 14px 0 10px; }
.pt-modes button { min-height: 48px; padding: 8px 16px; border-radius: 999px; border: 2px solid var(--line); background: var(--surface); font-weight: 700; cursor: pointer; }
.pt-modes button[aria-selected="true"] { background: var(--deep); color: #fff; border-color: var(--chalk); }
.pt-modes button:focus-visible { outline: 4px solid var(--chalk); outline-offset: 2px; }
.pt-text { width: 100%; font: inherit; font-size: 1.1rem; line-height: 1.7; padding: 14px; border-radius: 16px; border: 2px solid var(--line); background-image: repeating-linear-gradient(transparent, transparent calc(1.7em - 1px), #DCE7E2 calc(1.7em - 1px), #DCE7E2 1.7em); background-attachment: local; }
.pt-text:focus { outline: 4px solid var(--chalk); outline-offset: 2px; }
.pt-bg { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; margin: 6px 0 0; }
.pt-bg button[aria-pressed="true"] { border-color: var(--chalk); background: #FFF8E1; }
.pt-table-wrap { overflow-x: auto; }
.pt-table { border-collapse: collapse; min-width: 100%; }
.pt-table td { border: 2px solid var(--deep); padding: 0; }
.pt-table input { width: 100%; min-width: 90px; min-height: 44px; border: 0; padding: 6px 8px; font: inherit; background: #fff; }
.pt-table input:focus { outline: 3px solid var(--chalk); outline-offset: -3px; }
.pt-table-act { display: flex; flex-wrap: wrap; gap: 6px; margin: 8px 0 0; }
.pt-rev { list-style: none; padding: 0; display: grid; gap: 8px; }
.pt-rev-go { width: 100%; display: flex; gap: 12px; align-items: center; text-align: left; min-height: 52px; padding: 10px 14px; border-radius: 16px; border: 2px solid var(--line); background: var(--surface); cursor: pointer; font: inherit; }
.pt-rev-go:focus-visible { outline: 4px solid var(--chalk); outline-offset: 2px; }
.pt-rev-n { width: 34px; height: 34px; border-radius: 50%; display: grid; place-items: center; background: var(--accent); color: #fff; font-weight: 700; flex: none; }
.pt-rev-s { font-weight: 700; color: var(--accent); white-space: nowrap; }
.pt-own { display: flex; gap: 10px; align-items: center; font-weight: 700; margin: 14px 0; min-height: 44px; }
.pt-own input { width: 24px; height: 24px; }
.pt-marked-score { display: flex; justify-content: space-between; align-items: center; background: var(--deep); color: #fff; border-radius: 18px; padding: 14px 20px; font-size: 1.2rem; }
.pt-marked-score b { color: var(--chalk); font-size: 1.8rem; }
.pt-marked-note { background: var(--soft); border-radius: 14px; padding: 10px 14px; }
.pt-mq { background: var(--surface); border: 1px solid var(--line); border-radius: 18px; padding: 14px; margin: 12px 0; }
.pt-mq h3 { display: flex; justify-content: space-between; margin: 0 0 6px; font-family: var(--font-display); }
.pt-mq-mark { color: var(--accent); }
.pt-mq-img { max-width: 100%; height: auto; border: 1px solid var(--line); border-radius: 12px; }
.pt-mq-c { background: var(--soft); border-radius: 12px; padding: 8px 12px; }
.pt-mq-i { background: #FFF6D8; border-radius: 12px; padding: 8px 12px; }

/* Marking practice tests (teachers). */
.rv-mk-tests { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 14px; }
.rv-mk-test { background: var(--surface); border: 1px solid var(--line); border-radius: 24px; padding: 18px; box-shadow: 0 8px 26px rgb(14 77 62 / .06); }
.rv-mk-test h3 { margin: 0 0 4px; font-family: var(--font-display); }
.rv-mk-top { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 12px; align-items: flex-start; }
.rv-mk-tools { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.rv-mk-nav { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; margin: 12px 0; }
.rv-mk-nav label { display: inline-flex; gap: 8px; align-items: center; font-weight: 700; }
.rv-mk-nav select { min-height: 44px; border-radius: 12px; }
.rv-mk-grid { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(0, 1fr); gap: 18px; align-items: start; }
.rv-mk-script { background: var(--surface); border: 1px solid var(--line); border-radius: 24px; padding: 16px; }
.rv-mk-q { background: var(--soft); border-radius: 16px; padding: 10px 14px; margin-bottom: 10px; }
.rv-mk-side { background: var(--surface); border: 1px solid var(--line); border-radius: 24px; padding: 16px; position: sticky; top: 12px; max-height: calc(100vh - 24px); overflow: auto; }
.rv-mk-side h3 { font-family: var(--font-display); color: var(--deep); margin: 10px 0 6px; }
.rv-mk-scheme { font-size: .95rem; background: var(--soft); border-radius: 14px; padding: 8px 12px; }
.rv-mk-scheme ol, .rv-mk-scheme ul { margin: 4px 0; padding-left: 1.3em; }
.rv-mk-lv { border-collapse: collapse; width: 100%; font-size: .9rem; }
.rv-mk-lv th, .rv-mk-lv td { border: 1px solid var(--line); padding: 4px 6px; vertical-align: top; }
.rv-mk-marks { display: flex; flex-wrap: wrap; gap: 6px; }
.rv-mk-marks button { min-width: 48px; min-height: 48px; border-radius: 50%; border: 2px solid var(--line); background: var(--surface); font: 700 1.1rem var(--font-display); cursor: pointer; }
.rv-mk-marks button[aria-pressed="true"] { background: #C62828; color: #fff; border-color: var(--chalk); }
.rv-mk-marks button:focus-visible { outline: 4px solid var(--chalk); outline-offset: 2px; }
.rv-mk-label { display: grid; gap: 4px; font-weight: 700; margin-top: 10px; }
.rv-mk-label textarea { font: inherit; border-radius: 12px; border: 2px solid var(--line); padding: 8px; }
#mkWell, #mkImprove { color: #C62828; font-family: "Caveat", cursive; font-size: 1.4rem; line-height: 1.25; }
.rv-mk-quick { display: flex; flex-wrap: wrap; gap: 4px; margin: 4px 0 0; }
.rv-mk-quick button { font-size: .8rem; }
.rv-mk-ai { border-top: 1px solid var(--line); margin-top: 12px; padding-top: 4px; }
.rv-mk-ai textarea { width: 100%; font: inherit; border-radius: 12px; border: 2px solid var(--line); padding: 8px; }
.rv-mk-move { border-top: 1px solid var(--line); padding: 10px 0 0; margin-top: 12px; }
.rv-mk-sym { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 8px; }
.rv-mk-sym div { background: var(--soft); border-radius: 12px; padding: 8px 12px; }
.rv-mk-sym dt { font: 700 1.3rem "Caveat", cursive; color: #C62828; }
.rv-mk-sym dd { margin: 0; font-size: .92rem; }
.pt-correct { margin-top: 8px; }
.pt-green-box { color: #1B7F3B; font: inherit; width: 100%; border-radius: 12px; border: 2px solid #9ED4B0; padding: 8px; }
.rv-pt-collect { background: #FFF8E1; border: 2px solid var(--chalk); border-radius: 16px; padding: 10px 14px; margin-top: 10px; }
.rv-assign-kind .rv-chip { align-items: flex-start; }
.rv-toast { position: fixed; bottom: 18px; left: 50%; transform: translateX(-50%); background: var(--deep); color: #fff; padding: 12px 18px; border-radius: 14px; z-index: 80; }
@media (max-width: 900px) { .rv-mk-grid { grid-template-columns: minmax(0, 1fr); } .rv-mk-side { position: static; max-height: none; } }
.rv-wide-dlg { width: min(900px, 96vw); max-width: 96vw; }
.pt-mq-better { border: 2px solid var(--soft); border-radius: 14px; padding: 8px 12px; margin: 8px 0; }
.pt-mq-better summary { font-weight: 700; cursor: pointer; min-height: 44px; display: flex; align-items: center; flex-wrap: wrap; gap: 6px; }
.pt-ai { font-size: .8rem; background: var(--soft); color: var(--deep); border-radius: 999px; padding: 2px 10px; font-weight: 700; }
.pt-mq-model { white-space: pre-wrap; background: #F3FAF6; border-radius: 12px; padding: 10px 12px; }
.pt-mq-g { border-left: 5px solid #1B7F3B; padding: 4px 12px; margin: 8px 0; }
.pt-green { color: #1B7F3B; white-space: pre-wrap; font-weight: 600; }
.rv-plan-strip { background: var(--soft); border-radius: 18px; padding: 10px 16px; margin: 12px 0; text-align: left; }
.rv-plan-strip ol { margin: 4px 0 0; padding-left: 1.4em; display: grid; gap: 4px; }
.rv-plan-strip li.done { color: var(--accent); font-weight: 700; }
.rv-plan-strip li.next { font-weight: 700; background: #FFF8E1; border-radius: 8px; padding: 2px 6px; }
/* Starting a session: what, level, subject, then topics. */
.rv-start-plan { grid-template-columns: repeat(3, minmax(0, 1fr)); align-items: end; }
.rv-start-plan > button[type=submit] { grid-column: 1 / -1; }
.rv-start .rv-opt, .rv-opt { display: flex; flex-direction: row; gap: 10px; align-items: center; min-height: 48px; padding: 8px 14px; border-radius: 14px; border: 2px solid var(--line); background: var(--surface); cursor: pointer; font-weight: 600; line-height: 1.3; }
.rv-opt:has(input:checked) { border-color: var(--accent); background: var(--soft); }
.rv-opt:has(input:focus-visible) { outline: 4px solid var(--chalk); outline-offset: 2px; }
.rv-start .rv-opt input, .rv-opt input { width: 22px; height: 22px; flex: none; accent-color: var(--accent); margin: 0; }
.rv-opt small { margin-left: auto; color: var(--muted); }
.rv-opt.locked { opacity: .6; cursor: not-allowed; }
.rv-pick { display: grid; gap: 12px; grid-column: 1 / -1; }
.rv-pick-row { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.rv-pick-box { position: relative; }
.rv-pick-btn { width: 100%; min-height: 64px; display: grid; gap: 2px; text-align: left; padding: 10px 16px; border-radius: 18px; border: 2px solid var(--line); background: var(--surface); cursor: pointer; font: inherit; }
.rv-pick-btn::after { content: "▾"; position: absolute; right: 16px; top: 20px; color: var(--accent); }
.rv-pick-btn[aria-expanded="true"] { border-color: var(--chalk); box-shadow: 0 0 0 3px #FFF1C2; }
.rv-pick-btn:focus-visible { outline: 4px solid var(--chalk); outline-offset: 2px; }
.rv-pick-lbl { font-size: .85rem; color: var(--muted); font-weight: 700; }
.rv-pick-btn b { font-family: var(--font-display); font-size: 1.15rem; color: var(--deep); }
.rv-pick-panel { position: absolute; z-index: 20; left: 0; right: 0; top: calc(100% + 6px); background: var(--surface); border: 2px solid var(--line); border-radius: 18px; padding: 12px; box-shadow: 0 16px 40px rgb(14 77 62 / .18); display: grid; gap: 6px; max-height: 60vh; overflow: auto; }
.rv-pick-panel[hidden] { display: none; }
.rv-pick-panel fieldset { border: 0; margin: 0; padding: 0; display: grid; gap: 6px; }

.rv-pick-test { border-top: 1px dashed var(--line); padding-top: 8px; }
.rv-start .rv-pick-exam { display: flex; flex-direction: row; gap: 8px; align-items: center; font-weight: 700; min-height: 44px; }
.rv-pick-topics { border: 2px solid var(--line); border-radius: 20px; padding: 10px 14px 14px; margin: 0; }
.rv-pick-topics legend { font-family: var(--font-display); font-weight: 700; color: var(--deep); padding: 0 6px; }
.rv-pick-all { display: flex; gap: 6px; margin: 0 0 8px; }
.rv-pick-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 8px; }

.rv-pick-more { margin-top: 10px; }
.rv-pick-more summary { cursor: pointer; font-weight: 700; min-height: 44px; display: flex; align-items: center; }
.rv-pick-testopts { display: flex; flex-wrap: wrap; gap: 12px; align-items: end; background: #FFF8E1; border-radius: 16px; padding: 10px 14px; }
.rv-session-plan { margin: 4px 0; padding-left: 1.4em; font-size: .95rem; }
@media (max-width: 860px) { .rv-start-plan { grid-template-columns: minmax(0, 1fr); } .rv-pick-row { grid-template-columns: minmax(0, 1fr); } .rv-pick-panel { position: static; box-shadow: none; margin-top: 6px; } }
.rv-start .rv-pick-exam input { width: 22px; height: 22px; min-height: 0; flex: none; margin: 0; accent-color: var(--accent); }

/* Safeguarding: a pupil can report a task they're doing. */
.rv-report-line { display: flex; justify-content: flex-end; margin: 8px 0 0; }
.rv-report-line button { min-height: 44px; }
.rv-report-why { border: 0; padding: 0; margin: 12px 0; display: grid; gap: 8px; }
.rv-report-why legend { font-weight: 700; margin-bottom: 6px; }
.rv-report .rv-opt { display: flex; gap: 10px; align-items: center; min-height: 44px; padding: 8px 12px; border: 2px solid var(--line); border-radius: 14px; }
.rv-report .rv-opt:has(input:checked) { border-color: #137A5E; background: #E1F4EB; }

/* ---------- saved papers (the library) ---------- */
.rv-save-row { align-items: center; }
.rv-demand { margin: 12px 0; }
.rv-demand-bar { display: flex; height: 28px; border-radius: 999px; overflow: hidden; border: 1px solid var(--line); background: #F3FAF6; }
.rv-demand-bar span { display: grid; place-items: center; font-size: .8rem; min-width: 22px; }
.rv-d-recall { background: #E1F4EB; color: #0E4D3E; }
.rv-d-apply { background: #2DBE8F; color: #0E4D3E; }
.rv-d-deep { background: #0E4D3E; color: #F4C842; }
.rv-demand-key { list-style: none; padding: 0; margin: 8px 0 0; display: flex; flex-wrap: wrap; gap: 6px 16px; font-size: .95rem; }
.rv-d-dot { display: inline-grid; place-items: center; width: 24px; height: 24px; border-radius: 50%; font-size: .75rem; border: 1px solid var(--line); }
.rv-library { margin-top: 28px; border-top: 2px solid var(--line); padding-top: 18px; }
.rv-lib-title { font-family: var(--font-display); font-size: 1.5rem; margin: 0 0 6px; }
.rv-lib-tools { display: flex; flex-wrap: wrap; gap: 12px; margin: 12px 0; }
.rv-lib-tools label { display: grid; gap: 4px; font-weight: 600; flex: 1 1 220px; }
.rv-lib-tools input, .rv-lib-tools select { min-height: 44px; }
.rv-lib-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 16px; }
.rv-lib-card { background: var(--surface, #fff); border: 1px solid var(--line); border-radius: 24px; padding: 18px 20px; box-shadow: 0 10px 30px rgb(14 77 62 / .08); min-width: 0; }
.rv-lib-card.open { border: 2px solid #F4C842; }
.rv-lib-card h4 { font-family: var(--font-display); font-size: 1.25rem; margin: 4px 0; overflow-wrap: anywhere; }
.rv-lib-course { margin: 0; font-weight: 700; color: #137A5E; font-size: .9rem; }
.rv-lib-nums { margin: 6px 0; }
.rv-lib-topics { display: flex; flex-wrap: wrap; gap: 6px; margin: 6px 0; }
.rv-lib-card .lab-actions button { min-height: 44px; }
@media (max-width: 600px) { .rv-lib-grid { grid-template-columns: 1fr; } }
.rv-remove { margin-left: 6px; min-height: 36px; font-weight: 600; }

/* ---------- how to answer (exam technique) ---------- */
.xt-guide { display: grid; gap: 16px; }
.xt-sec { background: #F3FAF6; border: 1px solid var(--line); border-radius: 20px; padding: 16px 18px; min-width: 0; }
.xt-sec h3 { font-family: var(--font-display); margin: 0 0 8px; font-size: 1.2rem; color: #0E4D3E; }
.xt-aos { padding-left: 18px; margin: 6px 0; } .xt-aos li { margin: 4px 0; }
.xt-tips { list-style: none; padding: 0; margin: 8px 0 0; display: grid; gap: 4px; }
.xt-board { background: #fff; border-left: 4px solid #F4C842; padding: 8px 12px; border-radius: 8px; }
.xt-ladder { list-style: none; padding: 0; margin: 0; display: grid; gap: 10px; }
.xt-step { background: #fff; border: 1px solid var(--line); border-radius: 14px; padding: 10px 14px; }
.xt-step.xt-deep { border-left: 6px solid #0E4D3E; } .xt-step.xt-apply { border-left: 6px solid #2DBE8F; } .xt-step.xt-recall { border-left: 6px solid #E1F4EB; }
.xt-q { margin: 0; overflow-wrap: anywhere; } .xt-how { margin: 6px 0 0; color: var(--muted); }
.xt-badge { display: inline-block; font-weight: 700; font-size: .85rem; padding: 2px 10px; border-radius: 999px; background: #E1F4EB; color: #0E4D3E; }
.xt-deep .xt-badge { background: #0E4D3E; color: #F4C842; } .xt-apply .xt-badge { background: #2DBE8F; color: #0E4D3E; }
.xt-cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 12px; }
.xt-card { background: #fff; border: 1px solid var(--line); border-radius: 16px; padding: 12px 14px; min-width: 0; }
.xt-cmd { margin: 0 0 6px; } .xt-plan { margin: 6px 0; padding-left: 20px; } .xt-frame { margin: 6px 0; } .xt-avoid { margin: 6px 0 0; color: #7a4a00; }
.xt-kw .pill { margin: 2px; }
.rv-ladder { display: inline-block; font-weight: 700; font-size: .85rem; padding: 2px 10px; border-radius: 999px; background: #F4C842; color: #0E4D3E; margin-right: 8px; }
.rv-howto .xt-card { margin-top: 8px; }
@media (max-width: 600px) { .xt-cards { grid-template-columns: 1fr; } }
.rv-pupil-chip { display: inline-flex; gap: 6px; align-items: center; background: #F4C842; color: #0E4D3E; font-weight: 700; border-radius: 999px; padding: 4px 6px 4px 12px; }

/* Class rewards: the same for the whole group, in gold. */
.rv-rewards { background: #FFFBEA; border-bottom: 3px solid #F4C842; padding: 8px 0; }
.rv-rewards .wrap { display: flex; flex-wrap: wrap; gap: 6px 12px; align-items: center; }
.rv-reward { background: #F4C842; color: #0E4D3E; font-weight: 700; border-radius: 999px; padding: 3px 12px; }
.rv-reward-note { font-weight: 600; color: #0E4D3E; }
.rv-rewards small { color: var(--muted); }
.rv-reached { font-size: .85rem; font-weight: 600; color: #0E4D3E; }
.rv-rw-row { display: grid; grid-template-columns: 110px 1fr; gap: 10px; align-items: center; margin: 8px 0; font-weight: 700; }
.rv-rw-row input { min-height: 44px; }
@media (max-width: 600px) { .rv-rw-row { grid-template-columns: 1fr; } }

/* Session names, the "ended" note and Past sessions (teacher page). */
.rv-session-title { font-family: var(--font-display); font-size: 1.35rem; margin: 0 0 6px; display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.rv-title-field { display: grid; gap: 4px; grid-column: 1 / -1; }
.rv-title-field input { min-height: 44px; }
.rv-ended-note { background: #FFFBEA; border: 2px solid var(--chalk); border-radius: 14px; padding: 10px 14px; display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; }
.rv-past { margin-top: 20px; border: 1px solid var(--line); border-radius: 18px; background: var(--bg); padding: 0 16px; }
.rv-past summary { cursor: pointer; padding: 14px 0; font-weight: 700; font-size: 1.1rem; min-height: 44px; }
.rv-past[open] { padding-bottom: 16px; }
.rv-past-search { display: grid; gap: 4px; max-width: 420px; margin: 8px 0 14px; }

/* "Explain how to answer this question (exam style)": the plan, the technique and a running checklist. */
.xt-howto summary { font-weight: 700; }
.xt-howto .xt-how { margin: 8px 0; }
.xt-run-title { margin: 12px 0 4px; }
.xt-run { list-style: none; padding: 0; margin: 0; display: grid; gap: 6px; }
.xt-run li { display: flex; gap: 8px; align-items: flex-start; background: var(--surface); border: 1px solid var(--line); border-radius: 10px; padding: 8px 10px; }
.xt-run li.ok { background: var(--soft); border-color: var(--accent); font-weight: 600; }

/* Pictures from the approved picture library (AI-generated, checked by Lessonsmith) */
.rv-pics { display: grid; gap: 16px; margin: 18px 0; }
.rv-pic { margin: 0; padding: 14px; border-radius: 24px; background: #fff; border: 2px solid var(--soft); box-shadow: 0 6px 24px rgb(14 77 62 / .1); }
.rv-pic img { display: block; width: 100%; height: auto; border-radius: 16px; }
.rv-pic figcaption { display: flex; flex-wrap: wrap; align-items: center; gap: 8px 12px; margin-top: 10px; font-size: 1.05rem; }
.rv-pic figcaption > span:first-child:not(.ai-pic-tag) { flex-basis: 100%; font-weight: 600; color: var(--deep); }
.rv-pic-flag { min-height: 44px; font-size: .95rem; }
.rv-pic-thanks { margin: 0; font-weight: 600; color: var(--deep); }
@media (min-width: 900px) { .rv-pics:has(.rv-pic + .rv-pic) { grid-template-columns: 1fr 1fr; } }
.rv-pics.one { grid-template-columns: minmax(0, 640px); justify-content: center; }
.rv-pic img { max-height: 420px; object-fit: contain; background: #fff; }
/* Exam builder: three settings a row so their words fit, the topics in an even grid,
   then the Build button after the topics. */
.rv-build { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.rv-build .rv-chips { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 8px; }
.rv-build .rv-chip { width: 100%; border-radius: 14px; }
.rv-build-go { grid-column: 1 / -1; margin: 4px 0 0; }
@media (max-width: 860px) { .rv-build { grid-template-columns: minmax(0, 1fr); } }
/* Teacher page on phones: Start a session comes first; the Plus card moves to the end. */
@media (max-width: 760px) {
  #ready:not([hidden]) { display: flex; flex-direction: column; }
  #ready > .rv-plus { order: 99; }
  .rv-plus .rv-token-art { display: none; }
}
/* Phones: subjects two to a row, so the exam board choice isn't far below. */
@media (max-width: 640px) {
  .rv-strip { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .rv-strip-group { grid-column: 1 / -1; }
  .rv-strip-pill { padding: 6px 10px; font-size: .92rem; min-width: 0; }
  .rv-strip-pill small { font-size: .78rem; }
}
.rv-build .rv-chip input { width: 20px; height: 20px; flex: none; }

/* Challenge: "Go further" extension tasks, each with a shape so colour is never the only cue. */
.rv-gf { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 12px; margin: 14px 0; }
.rv-gf-opt { display: grid; gap: 6px; text-align: left; align-content: start; padding: 16px; border-radius: 18px; min-height: 44px; border: 2px solid transparent; }
.rv-gf-opt i { font-style: normal; font-size: 1.4rem; }
.rv-gf-opt b { font-family: var(--font-display); font-size: 1.2rem; }
.rv-gf-opt:nth-child(1) { background: #0E4D3E; color: #FFFFFF; }
.rv-gf-opt:nth-child(2) { background: #137A5E; color: #FFFFFF; }
.rv-gf-opt:nth-child(3) { background: #F4C842; color: #1B1A12; }
.rv-gf-opt:nth-child(4) { background: #FFFFFF; color: #0E4D3E; border-color: #137A5E; }
.rv-gf-opt[aria-checked="true"] { outline: 4px solid #F4C842; outline-offset: 3px; }
.rv-gf-opt:nth-child(3)[aria-checked="true"] { outline-color: #0E4D3E; }
.rv-gf-opt[aria-checked="true"] b::after { content: " ✓"; }
.rv-gf-paper { display: inline-flex; gap: 10px; align-items: center; min-height: 44px; font-weight: 600; }
.rv-gf-paper input { width: 22px; height: 22px; accent-color: var(--accent); }
@media (max-width: 600px) { .rv-hero-icon { width: 56px; height: 56px; border-radius: 16px; font-size: 1.9rem; } }

/* After the first screen the coin box folds into one small button at the top. */
.rv-entry-mini { margin: 0 0 14px; border-radius: 999px; background: #FFFBEA; border: 2px solid var(--chalk, #F4C842); }
.rv-entry-mini[open] { border-radius: 22px; padding-bottom: 14px; }
.rv-entry-mini > summary { cursor: pointer; list-style: none; display: flex; align-items: center; gap: 8px; min-height: 48px; padding: 8px 18px; font-weight: 700; color: var(--deep, #0E4D3E); }
.rv-entry-mini > summary::-webkit-details-marker { display: none; }
.rv-entry-mini > summary::after { content: "▾"; margin-left: auto; }
.rv-entry-mini[open] > summary::after { content: "▴"; }
.rv-entry-mini > summary:focus-visible { outline: 3px solid var(--chalk, #F4C842); outline-offset: 3px; }
.rv-entry-mini .rv-entry-text { padding: 0 16px; }