/* BioglowRX Sciences Learning — component styles.
   Lifted from Element Rush (element-rush.html); every value reads a token from tokens.css.
   Class prefix: br-  (BioglowRx). */

:where(.br-root, body) { font-family: var(--font-display); color: var(--ink); background: var(--bg); -webkit-tap-highlight-color: transparent; }
:where(.br-root) :where(button), .br-btn { font: inherit; color: inherit; cursor: pointer; border: 0; background: none; }
.br-root :focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }

/* ---------- brand ---------- */
.br-brand { display: flex; align-items: center; gap: var(--space-2-5); }
.br-logo { width: 46px; height: 50px; flex: none; display: block; filter: drop-shadow(var(--shadow-logo)); }
.br-word h1, .br-word .br-word-name { margin: 0; font-weight: 900; font-size: 22px; letter-spacing: -.02em; line-height: 1; }
.br-word span { color: var(--accent); }
.br-word p { margin: 4px 0 0; font: 600 11px var(--font-mono); color: var(--muted); letter-spacing: .14em; text-transform: uppercase; }

/* ---------- card + labels ---------- */
.br-card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius-card); padding: var(--space-5); }
.br-label { font: 600 11px var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); margin: 0 0 var(--space-2-5); }
.br-hero { display: flex; align-items: baseline; flex-wrap: wrap; gap: 4px 12px; padding-bottom: var(--space-4); border-bottom: 1px solid var(--line); }
.br-hero h2 { margin: 0; font-size: clamp(28px, 6vw, 40px); font-weight: 900; letter-spacing: -.03em; line-height: 1; }
.br-hero p { margin: 0; font: 400 13px var(--font-mono); color: var(--muted); }

/* ---------- tile (element-style) ---------- */
.br-tile { width: 96px; height: 108px; border-radius: var(--radius-tile-lg); display: grid; place-items: center; position: relative; color: var(--tile-ink); background: var(--cat-sky); }
.br-tile b { font-size: 44px; font-weight: 900; line-height: 1; }
.br-tile small { position: absolute; top: 6px; left: 8px; font: 600 12px var(--font-mono); }
.br-tile em { position: absolute; bottom: 7px; left: 0; right: 0; text-align: center; font: 600 11px var(--font-display); font-style: normal; }
.br-tile.is-md { width: 84px; height: 94px; } .br-tile.is-md b { font-size: 36px; }
.br-tile.is-sm { width: 62px; height: 70px; } .br-tile.is-sm b { font-size: 24px; } .br-tile.is-sm small { font-size: 9px; top: 4px; left: 5px; } .br-tile.is-sm em { font: 400 8px var(--font-mono); bottom: 4px; }
.br-tile.is-blank { background: var(--blank); color: var(--muted); }

/* ---------- game mode card ---------- */
.br-modes { display: grid; grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); gap: var(--space-3); }
.br-mode { display: flex; gap: var(--space-3-5); align-items: center; text-align: left; padding: var(--space-3-5); border-radius: var(--radius-inner); border: 1px solid var(--line); background: var(--bg); transition: transform .12s ease, border-color .12s; }
.br-mode:hover { border-color: var(--accent); transform: translateY(-1px); }
.br-mode:active { transform: scale(.96); }
.br-mode .ic { flex: none; width: 52px; height: 56px; border-radius: var(--radius-tile); display: grid; place-items: center; font-weight: 900; font-size: 20px; color: var(--tile-ink); }
.br-mode h3 { margin: 0 0 3px; font-size: 16px; font-weight: 800; }
.br-mode p { margin: 0; font-size: 13px; color: var(--muted); line-height: 1.35; }
.br-mode .best { display: block; margin-top: 5px; font: 600 11px var(--font-mono); color: var(--accent); }
.br-mode.is-soon { opacity: .62; cursor: default; }
.br-mode.is-soon:hover { border-color: var(--line); transform: none; }

/* ---------- chips / status ---------- */
.br-chip { display: inline-flex; align-items: center; gap: 5px; padding: 3px 9px; border-radius: var(--radius-pill); font: 600 11px var(--font-mono); letter-spacing: .06em; text-transform: uppercase; border: 1px solid var(--line); color: var(--muted); }
.br-chip.is-live { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.br-chip.is-live::before { content: ""; width: 6px; height: 6px; border-radius: 50%; background: currentColor; }

/* ---------- answer button ---------- */
.br-answers { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-2-5); }
.br-ans { min-height: 64px; padding: var(--space-3); border-radius: var(--radius-inner); border: 2px solid var(--line); background: var(--bg); font-size: 20px; font-weight: 800; transition: transform .12s ease, border-color .12s, background .12s; }
.br-ans:hover:not(:disabled) { border-color: var(--accent); }
.br-ans:active:not(:disabled) { transform: scale(.96); }
.br-ans.is-correct { border-color: var(--good); background: var(--good-tint); animation: br-okpop .45s cubic-bezier(.3,1.6,.5,1); }
.br-ans.is-wrong { border-color: var(--bad); background: var(--bad-tint); animation: br-shake .3s; }
.br-ans:disabled { cursor: default; }
.br-ans .k { display: block; font: 400 11px var(--font-mono); color: var(--muted); margin-bottom: 2px; }

/* ---------- buttons ---------- */
.br-next { display: inline-block; padding: 12px 28px; border-radius: var(--radius-pill); background: var(--accent); color: var(--accent-ink); font-weight: 800; font-size: 16px; transition: transform .12s ease; }
.br-ghost { display: inline-block; padding: 12px 22px; border-radius: var(--radius-pill); border: 1px solid var(--line); font-weight: 700; transition: transform .12s ease; }
.br-next:active, .br-ghost:active { transform: scale(.96); }

/* ---------- streak counter ---------- */

/* ---------- progress bar ---------- */
.br-top { display: flex; align-items: center; gap: var(--space-3); }
.br-bar { flex: 1; height: 8px; border-radius: var(--radius-pill); background: var(--bg); border: 1px solid var(--line); overflow: hidden; }
.br-bar i { display: block; height: 100%; background: var(--accent); width: 0; transition: width .3s; }
.br-quit { font: 600 13px var(--font-mono); color: var(--muted); padding: 6px 4px; }
.br-count { font: 600 13px var(--font-mono); color: var(--muted); font-variant-numeric: tabular-nums; }

/* ---------- explore detail card ---------- */
.br-detail { display: flex; gap: var(--space-4); align-items: center; padding: var(--space-3-5); border-radius: var(--radius-inner); background: var(--bg); border: 1px solid var(--line); }
.br-detail h3 { margin: 0; font-size: 22px; font-weight: 900; }
.br-detail dl { display: grid; grid-template-columns: auto 1fr; gap: 3px 12px; margin: 8px 0 0; font-size: 13px; }
.br-detail dt { color: var(--muted); font: 400 12px var(--font-mono); }
.br-detail dd { margin: 0; font-weight: 600; }
.br-about { display: grid; grid-template-columns: 1fr 1fr; gap: 12px 18px; margin-top: var(--space-3); padding: var(--space-4); border-radius: var(--radius-inner); border: 1px solid var(--line); }
.br-about p { margin: 0; font-size: 15px; line-height: 1.5; max-width: 60ch; }
.br-about .br-label { margin-bottom: 6px; }
.br-about .life { border-left: 3px solid var(--accent); padding-left: var(--space-3); }
.br-pics { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: var(--space-3); margin-top: var(--space-3); }
.br-pics figure { margin: 0; padding: 10px 10px 12px; border-radius: var(--radius-inner); border: 1px solid var(--line); background: linear-gradient(180deg, var(--surface), var(--bg)); display: flex; flex-direction: column; align-items: center; gap: 6px; min-width: 0; }
.br-pics svg { width: 100%; max-width: 200px; height: auto; display: block; border-radius: var(--radius-tile-lg); }
.br-pics figcaption { font: 400 12px var(--font-mono); color: var(--muted); text-align: center; }
@media (max-width: 620px) { .br-about { grid-template-columns: 1fr; } }
@media (max-width: 560px) { .br-pics { grid-template-columns: 1fr 1fr; } .br-pics figure:last-child { grid-column: 1 / -1; } }

/* ---------- end-of-round score ---------- */
.br-end { text-align: center; }
.br-end .br-logo { width: 56px; height: 60px; margin: 0 auto 8px; }
.br-score { font-size: 64px; font-weight: 900; letter-spacing: -.03em; margin: 4px 0; font-variant-numeric: tabular-nums; line-height: 1; }
.br-score span { color: var(--muted); font-size: 32px; }
.br-review { display: flex; flex-wrap: wrap; gap: var(--space-2); justify-content: center; margin-top: var(--space-3); }
.br-btns { display: flex; gap: var(--space-2-5); justify-content: center; flex-wrap: wrap; margin-top: var(--space-4-5); }

/* ---------- milestone ---------- */
.br-milestone { position: fixed; inset: 0; z-index: 60; display: grid; place-items: center; padding: var(--space-6); background: color-mix(in srgb, var(--bg) 70%, transparent); backdrop-filter: blur(6px); -webkit-backdrop-filter: blur(6px); animation: br-fadein .25s; }
.br-milestone.is-inline { position: relative; inset: auto; min-height: 100%; }
.br-milestone .box { text-align: center; display: flex; flex-direction: column; align-items: center; gap: 10px; animation: br-zoomin .55s cubic-bezier(.2,1.6,.4,1); }
.br-milestone .mtile { width: 132px; height: 148px; border-radius: var(--radius-tile-xl); display: grid; place-items: center; position: relative; color: var(--tile-ink); box-shadow: var(--shadow-milestone); animation: br-spinin .8s cubic-bezier(.2,1.4,.4,1); }
.br-milestone .mtile b { font-size: 60px; font-weight: 900; }
.br-milestone .mtile small { position: absolute; top: 8px; left: 11px; font: 600 15px var(--font-mono); }
.br-milestone .mtile em { position: absolute; bottom: 9px; left: 0; right: 0; font: 600 12px var(--font-display); font-style: normal; }
.br-milestone h2 { margin: 6px 0 0; font-size: clamp(34px, 9vw, 52px); font-weight: 900; letter-spacing: -.03em; line-height: 1; }
.br-milestone p { margin: 0; font-size: 16px; color: var(--muted); max-width: 32ch; text-wrap: balance; }

/* ---------- subject tile (hub) ---------- */
.br-subj { position: relative; display: flex; flex-direction: column; justify-content: space-between; height: 248px; padding: 14px 16px 16px; box-sizing: border-box; border-radius: var(--radius-card); color: var(--tile-ink); text-decoration: none; transition: transform .12s ease; }
.br-subj:hover { transform: translateY(-3px); }
.br-subj:active { transform: scale(.96); }
.br-subj .no { font: 600 14px var(--font-mono); }
.br-subj .code { font-size: 92px; font-weight: 900; letter-spacing: -.04em; line-height: 1; text-align: center; }
.br-subj .nm { display: block; font-size: 17px; font-weight: 800; line-height: 1.15; }
.br-subj .ct { display: block; font: 400 12px var(--font-mono); opacity: .85; margin-top: 3px; }
.br-subj .br-chip { position: absolute; top: 12px; right: 12px; }
.br-subj .br-chip:not(.is-live) { background: rgba(255,255,255,.55); border-color: transparent; color: var(--tile-ink); }
.br-subj.is-compact { height: 184px; padding: 12px 12px 14px; }
.br-subj.is-compact .code { font-size: 64px; }
.br-subj.is-compact .nm { font-size: 15px; }

/* ---------- featured slab ---------- */
.br-featured { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 32px; align-items: center; padding: 32px 36px; border-radius: var(--radius-card); background: var(--accent); color: var(--accent-ink); }
.br-featured .eyebrow { margin: 0; font: 600 11px var(--font-mono); letter-spacing: .1em; text-transform: uppercase; opacity: .85; }
.br-featured h2 { margin: 6px 0 0; font-size: 52px; font-weight: 900; letter-spacing: -.035em; line-height: 1; }
.br-featured p { margin: 10px 0 0; font-size: 16px; line-height: 1.5; max-width: 46ch; }
.br-featured .go { display: inline-block; padding: 12px 28px; border-radius: var(--radius-pill); background: var(--accent-ink); color: var(--accent); font-weight: 800; font-size: 16px; text-decoration: none; white-space: nowrap; }
.br-featured .alt { display: inline-block; padding: 12px 22px; border-radius: var(--radius-pill); border: 1px solid currentColor; color: var(--accent-ink); font-weight: 700; text-decoration: none; white-space: nowrap; }
.br-featured .ghost-tile { background: rgba(255,255,255,.18); color: var(--accent-ink); }
@media (max-width: 620px) { .br-featured { grid-template-columns: 1fr; padding: 22px 18px; } .br-featured h2 { font-size: 38px; } }

/* ---------- chapter card ---------- */
.br-chap { display: flex; flex-direction: column; gap: 12px; padding: 14px; border-radius: var(--radius-inner); border: 1px solid var(--line); background: var(--surface); color: var(--ink); text-decoration: none; transition: transform .12s ease, border-color .12s; }
.br-chap:hover { border-color: var(--accent); transform: translateY(-1px); }
.br-chap:active { transform: scale(.96); }
.br-chap.is-live { border: 2px solid var(--accent); padding: 13px; }
.br-chap .top { display: flex; gap: 12px; align-items: flex-start; }
.br-chap .ic { flex: none; width: 52px; height: 56px; border-radius: var(--radius-tile); display: grid; place-items: center; position: relative; font-weight: 900; font-size: 20px; color: var(--tile-ink); }
.br-chap .ic small { position: absolute; top: 3px; left: 5px; font: 600 9px var(--font-mono); }
.br-chap .ch { display: block; font: 600 11px var(--font-mono); letter-spacing: .1em; text-transform: uppercase; color: var(--muted); }
.br-chap h3 { margin: 3px 0 0; font-size: 16px; font-weight: 800; line-height: 1.2; }
.br-chap .game { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; padding-top: 10px; border-top: 1px solid var(--line); }
.br-chap .game b { font-size: 14px; font-weight: 800; margin-right: 2px; }
.br-chap .game .br-chip { margin-left: auto; }
.br-fmt { font: 400 11px var(--font-mono); color: var(--muted); padding: 2px 7px; border-radius: var(--radius-pill); background: var(--bg); }
.br-star { color: var(--accent); font: 600 11px var(--font-mono); }

/* ---------- match card (Match Pairs) ---------- */
.br-mgrid { display: grid; grid-template-columns: repeat(4, 148px); gap: 12px; justify-content: center; }
.br-mc { position: relative; width: 148px; height: 160px; border-radius: var(--radius-inner); display: grid; place-items: center; padding: 6px; box-sizing: border-box; color: var(--tile-ink); transition: transform .12s ease; }
.br-mc:active { transform: scale(.96); }
.br-mc.is-down { background: var(--accent); color: var(--accent-ink); background-image: radial-gradient(circle at 78% 22%, rgba(255,255,255,.35) 0 3px, transparent 4px); }
.br-mc.is-down .q { font-size: 44px; font-weight: 900; }
.br-mc.item b { font-size: 46px; font-weight: 900; line-height: 1; }
.br-mc small { position: absolute; top: 7px; left: 9px; font: 600 12px var(--font-mono); }
.br-mc.item em { position: absolute; bottom: 9px; left: 0; right: 0; text-align: center; font: 600 12px var(--font-display); font-style: normal; }
.br-mc.clue { background: var(--surface); color: var(--ink); border: 1px solid var(--line); }
.br-mc.clue small { color: var(--muted); text-transform: uppercase; letter-spacing: .08em; }
.br-mc.clue .t { font-size: 17px; font-weight: 800; line-height: 1.15; text-align: center; text-wrap: balance; }
.br-mc.is-done { background: var(--blank); color: var(--muted); border-color: transparent; }
.br-mc.is-done small, .br-mc.is-done em { color: var(--muted); }
.br-mc.is-ok { outline: 3px solid var(--good); outline-offset: -1px; animation: br-okpop .45s cubic-bezier(.3,1.6,.5,1); }
.br-mc.is-no { outline: 3px solid var(--bad); outline-offset: -1px; animation: br-shake .3s; }
.br-mc .bd { position: absolute; top: -8px; right: -8px; width: 24px; height: 24px; border-radius: 50%; display: grid; place-items: center; font: 900 13px var(--font-display); font-style: normal; background: var(--good); color: var(--surface); }
.br-mc .bd.no { background: var(--bad); }
@media (max-width: 520px) { .br-mgrid { grid-template-columns: repeat(4, 76px); gap: 8px; } .br-mc { width: 76px; height: 92px; border-radius: var(--radius-tile-lg); } .br-mc.item b, .br-mc.is-down .q { font-size: 28px; } .br-mc small, .br-mc.item em { font-size: 9px; } .br-mc.clue .t { font-size: 12px; } .br-mc .bd { width: 18px; height: 18px; top: -6px; right: -6px; font-size: 11px; } }

/* ---------- reward motion ---------- */
.br-plus { position: fixed; z-index: 51; pointer-events: none; font: 900 22px var(--font-display); color: var(--good); animation: br-rise .9s ease-out forwards; }
.br-flash { animation: br-flash .45s; }
.br-pop { animation: br-pop .35s ease; }
@keyframes br-okpop { 0% { transform: scale(1) } 40% { transform: scale(1.07) } 100% { transform: scale(1) } }
@keyframes br-shake { 25% { transform: translateX(-5px) } 75% { transform: translateX(5px) } }
@keyframes br-bump { 0% { transform: scale(1) } 50% { transform: scale(1.6) } 100% { transform: scale(1) } }
@keyframes br-pulse { 0% { box-shadow: 0 0 0 0 var(--streak-glow) } 100% { box-shadow: 0 0 0 10px transparent } }
@keyframes br-rise { 0% { opacity: 0; transform: translate(-50%, 0) scale(.6) } 20% { opacity: 1; transform: translate(-50%, -8px) scale(1.15) } 100% { opacity: 0; transform: translate(-50%, -56px) scale(1) } }
@keyframes br-flash { 0% { box-shadow: inset 0 0 0 0 transparent } 30% { box-shadow: inset 0 0 0 3px var(--bad) } 100% { box-shadow: inset 0 0 0 0 transparent } }
@keyframes br-pop { 0% { transform: scale(.96) } 60% { transform: scale(1.03) } 100% { transform: scale(1) } }
@keyframes br-fadein { from { opacity: 0 } }
@keyframes br-zoomin { from { transform: scale(.5); opacity: 0 } }
@keyframes br-spinin { from { transform: rotate(-200deg) scale(.2) } }
@keyframes br-slidein { from { transform: translateY(10px); opacity: .3 } }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }