/* Quiz Challenge (/quizpractice/) — solo quiz games. Uses the site colours from style.css. */
#qc { outline: none; min-height: 60vh; }
.qc-in { animation: qcIn .35s ease both; }
@keyframes qcIn { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }
@media (prefers-reduced-motion: reduce) { .qc-in, .qc-card.shake { animation: none !important; } }

/* lobby */
.qc-hero { text-align: center; padding: 14px 0 4px; }
.qc-hero h1 { font-size: clamp(2.3rem, 8vw, 3.6rem); margin: .1em 0; color: var(--brass2); letter-spacing: -.01em;
  background: linear-gradient(100deg, var(--brass2), #fff2c9 45%, var(--brass)); -webkit-background-clip: text; background-clip: text; color: transparent; }
.qc-hero p { color: var(--muted); max-width: 52ch; margin: 0 auto; font-size: 1.05rem; }
.qc-stats { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 8px; margin: 18px 0 6px; }
@media (max-width: 620px) { .qc-stats { grid-template-columns: repeat(3, minmax(0, 1fr)); } .qc-stats .qc-stat:nth-child(n+4) { display: none; } }
.qc-stat { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 8px 10px; text-align: center; min-width: 0; }
.qc-stat small { display: block; color: var(--muted); font-size: .72rem; text-transform: uppercase; letter-spacing: .06em; line-height: 1.2; }
@media (max-width: 420px) { .qc-stats .qc-stat small { font-size: .62rem; letter-spacing: .03em; } }
.qc-stat b { font: 800 1.25rem var(--serif); color: var(--text); }
.qc-modes { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; margin: 16px 0; }
@media (max-width: 640px) { .qc-modes { grid-template-columns: 1fr; gap: 10px; } }
.qc-mode {
  --c: var(--brass); position: relative; overflow: hidden; display: grid; grid-template-columns: 56px 1fr auto; gap: 12px; align-items: center;
  text-align: left; padding: 14px 14px; border-radius: 18px; border: 1px solid color-mix(in srgb, var(--c) 45%, var(--line));
  background: linear-gradient(135deg, color-mix(in srgb, var(--c) 22%, var(--card)) 0%, var(--card) 70%);
  color: var(--text); font: inherit; cursor: pointer; transition: transform .12s, box-shadow .2s, border-color .2s;
}
.qc-mode:hover { transform: translateY(-2px); box-shadow: 0 10px 24px rgba(0,0,0,.35); border-color: var(--c); }
.qc-mode:active { transform: scale(.98); }
.qc-mode:focus-visible { outline: 3px solid var(--c); outline-offset: 2px; }
.qc-mode-ic { width: 56px; height: 56px; border-radius: 16px; display: grid; place-items: center; background: var(--c); color: #16130a; box-shadow: 0 6px 14px color-mix(in srgb, var(--c) 35%, transparent); }
.qc-mode-ic .ic { width: 30px; height: 30px; } .qc-mode-ic svg { stroke-width: 2; }
.qc-mode-text { min-width: 0; }
.qc-mode-text b { display: block; font: 800 1.15rem var(--serif); }
.qc-mode-text span { display: block; color: var(--muted); font-size: .9rem; }
.qc-mode-best { font-size: .82rem; color: var(--muted); text-align: right; white-space: nowrap; }
.qc-mode-best b { color: var(--text); }
.qc-mode-best .new { color: #16130a; background: var(--c); padding: 3px 9px; border-radius: 99px; font-weight: 700; }
.qc-mode-best .done { color: var(--ok); font-weight: 700; display: inline-flex; align-items: center; gap: 2px; }
.m-daily { --c: #f4c76b; grid-column: 1 / -1; padding: 18px; }
.m-master { grid-column: 1 / -1; }
.m-daily .qc-mode-text b { font-size: 1.35rem; }
.m-wheel { --c: #e8a24a; } .m-ladder { --c: #6cc08f; } .m-clock { --c: #63a7e8; } .m-sudden { --c: #ef6f5e; }
.m-pics { --c: #b48be0; } .m-hilo { --c: #4cc3bd; } .m-master { --c: #e6c35c; }

.qc-badges { margin-top: 22px; }
.qc-badges h2 { margin: 0; }
.qc-badge-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(190px, 1fr)); gap: 8px; margin-top: 10px; }
.qc-badge { display: flex; gap: 10px; align-items: center; padding: 8px 10px; border-radius: 12px; border: 1px dashed var(--line); color: var(--muted); opacity: .6; }
.qc-badge > .ic { width: 36px; height: 36px; flex: none; display: grid; place-items: center; border-radius: 50%; background: var(--card); }
.qc-badge > .ic svg { width: 20px; height: 20px; }
.qc-badge b { display: block; font-size: .9rem; color: var(--text); }
.qc-badge small { display: block; font-size: .75rem; line-height: 1.25; }
.qc-badge.on { opacity: 1; border-style: solid; border-color: var(--brass); background: var(--accent-soft); }
.qc-badge.on .ic { background: var(--brass); color: var(--ink); }
.qc-small { font-size: .82rem; text-align: center; margin-top: 14px; }
.qc-host-cta { display: flex; gap: 12px; align-items: center; flex-wrap: wrap; margin: 26px 0 8px; padding: 14px 16px; border-radius: 16px; border: 1px solid var(--line); background: var(--card); }
.qc-host-cta > .ic { width: 30px; height: 30px; color: var(--brass2); }
.qc-host-cta > div { flex: 1 1 220px; color: var(--muted); }
.qc-host-cta b { color: var(--text); }

/* in-game header */
.qc-hud { display: flex; align-items: center; gap: 10px; margin: 6px 0 12px; padding: 8px 10px; border-radius: 14px; background: var(--card); border: 1px solid var(--line); position: sticky; top: 6px; z-index: 5; }
.qc-hud-title { display: flex; align-items: center; gap: 6px; font: 800 1.05rem var(--serif); min-width: 0; flex: 1; }
.qc-hud-title span:last-child { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.qc-hud-title .ic { color: var(--brass2); }
.qc-hud-items { display: flex; gap: 6px; }
.qc-hud .qc-stat { padding: 3px 10px; background: var(--bg2); }
.qc-hud .qc-stat b { font-size: 1.05rem; }
.qc-hearts { display: inline-flex; gap: 1px; }
.qc-hearts .ic { width: 18px; height: 18px; }
.qc-hearts .full { color: var(--bad); } .qc-hearts .full svg { fill: currentColor; }
.qc-hearts .lost { color: var(--line); }
@media (max-width: 420px) { .qc-hud-title span:last-child { display: none; } }

/* question card */
.qc-card { background: linear-gradient(180deg, var(--card) 0%, var(--bg2) 100%); border: 1px solid var(--line); border-radius: 20px; padding: 16px; box-shadow: 0 12px 30px rgba(0,0,0,.25); }
.qc-card.shake { animation: qcShake .4s; }
@keyframes qcShake { 20%, 60% { transform: translateX(-6px); } 40%, 80% { transform: translateX(6px); } }
.qc-qhead { display: flex; justify-content: space-between; align-items: center; gap: 10px; }
.qc-cat { font-size: .78rem; font-weight: 700; text-transform: uppercase; letter-spacing: .07em; color: var(--brass2); background: var(--accent-soft); padding: 4px 10px; border-radius: 99px; }
.qc-diff { display: inline-flex; gap: 3px; }
.qc-diff i { width: 8px; height: 8px; border-radius: 50%; background: var(--line); }
.qc-diff i.on { background: var(--brass); }
.qc-q { font-size: clamp(1.25rem, 4.6vw, 1.7rem); margin: .55em 0 .5em; line-height: 1.25; }
.qc-emoji { font-size: clamp(2.6rem, 12vw, 4rem); text-align: center; margin: 4px 0 10px; letter-spacing: .08em; }
.qc-flag { display: block; width: min(280px, 70%); margin: 4px auto 12px; border-radius: 8px; box-shadow: 0 6px 18px rgba(0,0,0,.4); }
.qc-fig { margin: 4px 0 12px; text-align: center; }
.qc-pic { display: block; max-width: 100%; max-height: min(46vh, 380px); margin: 0 auto; border-radius: 12px; background: #f8f5ec; }
.qc-fig figcaption { font-size: .68rem; color: var(--muted); margin-top: 4px; overflow-wrap: anywhere; }
.qc-opts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
@media (max-width: 560px) { .qc-opts { grid-template-columns: 1fr; gap: 8px; } .qc-pic { max-height: 30vh; } .qc-opt { min-height: 50px; } .qc-card { padding: 14px 12px; } }
.qc-opt {
  display: flex; align-items: center; gap: 12px; min-height: 58px; padding: 10px 14px; text-align: left;
  border-radius: 14px; border: 2px solid var(--line); background: var(--card2); color: var(--text); font: 600 1.02rem var(--sans); cursor: pointer;
  transition: transform .08s, border-color .15s, background .15s, opacity .2s;
}
.qc-opt b { flex: none; width: 32px; height: 32px; border-radius: 50%; display: grid; place-items: center; background: var(--bg2); color: var(--brass2); font-size: .9rem; }
.qc-opt:hover:not(:disabled) { border-color: var(--brass); }
.qc-opt:active:not(:disabled) { transform: scale(.98); }
.qc-opt:disabled { cursor: default; }
.qc-opt.right { border-color: var(--ok); background: var(--ok-soft); animation: qcPulse .5s; }
.qc-opt.right b { background: var(--ok); color: #0c2416; }
.qc-opt.wrong { border-color: var(--bad); background: var(--bad-soft); }
.qc-opt.wrong b { background: var(--bad); color: #2a0a05; }
.qc-opt.dim { opacity: .45; }
.qc-opt.gone { opacity: .15; text-decoration: line-through; }
@keyframes qcPulse { 50% { transform: scale(1.03); } }
.qc-feedback:empty { display: none; }
.qc-feedback { margin-top: 12px; }
.qc-verdict { display: flex; flex-wrap: wrap; align-items: center; gap: 6px; font: 800 1.15rem var(--serif); }
.qc-verdict.ok { color: var(--ok); } .qc-verdict.no { color: var(--bad); }
.qc-verdict .qc-ans { font: 500 1rem var(--sans); color: var(--text); }
.qc-note { color: var(--muted); font-size: .95rem; margin: 6px 0 0; }
.qc-next { margin-top: 12px; width: 100%; }

/* timer */
.qc-timer { display: flex; align-items: center; gap: 8px; margin-top: 10px; }
.qc-timer-track { flex: 1; height: 10px; border-radius: 99px; background: var(--bg2); overflow: hidden; border: 1px solid var(--line); }
.qc-timer-fill { height: 100%; width: 100%; border-radius: 99px; background: linear-gradient(90deg, var(--ok), var(--brass2)); }
.qc-timer-fill.low { background: var(--bad); }
.qc-timer-num { font: 800 .95rem var(--serif); min-width: 34px; text-align: right; font-variant-numeric: tabular-nums; }
.qc-timer.big { margin: 0 0 12px; }
.qc-timer.big .qc-timer-track { height: 16px; }
.qc-timer.big .qc-timer-num { font-size: 1.3rem; min-width: 44px; }

/* points pop-up */
.qc-pop { position: fixed; left: 50%; top: 38%; transform: translate(-50%, 0); z-index: 50; pointer-events: none;
  font: 800 2.2rem var(--serif); color: var(--ok); text-shadow: 0 4px 14px rgba(0,0,0,.6); animation: qcPop 1.2s ease-out forwards; }
.qc-pop.gold { color: var(--brass2); } .qc-pop.bad { color: var(--bad); }
@keyframes qcPop { 0% { opacity: 0; transform: translate(-50%, 10px) scale(.7); } 20% { opacity: 1; transform: translate(-50%, 0) scale(1.1); } 100% { opacity: 0; transform: translate(-50%, -50px) scale(1); } }

/* wheel */
.qc-wheelbox { text-align: center; }
.qc-wheel { position: relative; width: min(360px, 88vw); margin: 4px auto 10px; }
.qc-wheel-svg { display: block; width: 100%; height: auto; filter: drop-shadow(0 14px 26px rgba(0,0,0,.45)); }
.qc-wheel-g { transform-origin: 160px 160px; transform-box: view-box; }
.qc-pointer { position: absolute; left: 50%; top: -6px; transform: translateX(-50%); width: 0; height: 0; z-index: 2;
  border-left: 16px solid transparent; border-right: 16px solid transparent; border-top: 30px solid var(--text); filter: drop-shadow(0 3px 4px rgba(0,0,0,.5)); }
.qc-landed { min-height: 2.6em; font-size: 1.1rem; margin: 6px 0 10px; }
.qc-landed b { color: var(--brass2); }
.qc-spin { min-width: 200px; }
.qc-picks { display: flex; flex-wrap: wrap; justify-content: center; gap: 8px; margin-top: 10px; }
.qc-flag-double { margin-top: 8px; display: inline-block; font-weight: 800; color: var(--ink); background: var(--brass2); padding: 3px 10px; border-radius: 99px; }

/* ladder */
.qc-ladder-wrap { display: grid; grid-template-columns: minmax(0, 1fr) 190px; gap: 14px; align-items: start; }
@media (max-width: 720px) { .qc-ladder-wrap { grid-template-columns: 1fr; } .qc-ladder-side { display: none; } }
.qc-ladder-sum { display: flex; justify-content: space-between; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; padding: 8px 12px; border-radius: 12px; background: var(--accent-soft); border: 1px solid var(--brass); font-size: .92rem; }
.qc-ladder-sum b { color: var(--brass2); }
.qc-ladder { list-style: none; margin: 0; padding: 8px; border-radius: 16px; background: var(--card); border: 1px solid var(--line); }
.qc-ladder li { display: flex; align-items: center; gap: 8px; padding: 3px 8px; border-radius: 8px; font-size: .88rem; color: var(--muted); font-variant-numeric: tabular-nums; }
.qc-ladder .n { width: 20px; text-align: right; opacity: .7; }
.qc-ladder .v { flex: 1; text-align: right; font-weight: 700; }
.qc-ladder li.safe { color: var(--text); }
.qc-ladder li.safe .ic { color: var(--brass2); }
.qc-ladder li.done { color: var(--ok); }
.qc-ladder li.cur { background: var(--brass); color: var(--ink); }
.qc-ladder li.cur .ic { color: var(--ink); }
.qc-ladder-tools { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 8px; margin-top: 12px; }
.qc-lifelines { display: flex; gap: 6px; flex-wrap: wrap; }
.qc-poll { margin-top: 12px; padding: 10px 12px; border-radius: 12px; background: var(--bg2); border: 1px solid var(--line); }
.qc-poll small { color: var(--muted); }
.qc-poll-row { display: grid; grid-template-columns: minmax(0, 1fr) 40% 42px; gap: 8px; align-items: center; font-size: .9rem; margin-top: 4px; }
.qc-poll-row > span:first-child { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.qc-poll-bar { height: 10px; background: var(--card); border-radius: 99px; overflow: hidden; }
.qc-poll-bar i { display: block; height: 100%; width: 0; background: var(--brass); transition: width .9s ease; }
.qc-poll-row b { text-align: right; }

/* higher or lower */
.qc-hl-prompt { color: var(--muted); text-align: center; margin: 4px 0 0; }
.qc-bignum { font: 800 clamp(2rem, 9vw, 3rem) var(--serif); color: var(--brass2); text-align: center; font-variant-numeric: tabular-nums; }
.qc-bignum.shown { margin: 2px 0 12px; }
.qc-hl-btns { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; }
.qc-hl { min-height: 64px; border-radius: 16px; border: 2px solid var(--line); font: 800 1.2rem var(--serif); cursor: pointer; color: var(--text); }
.qc-hl.up { background: color-mix(in srgb, var(--ok) 20%, var(--card2)); }
.qc-hl.down { background: color-mix(in srgb, #63a7e8 22%, var(--card2)); }
.qc-hl:disabled { opacity: .5; cursor: default; }
.qc-hl.right { opacity: 1; border-color: var(--ok); box-shadow: 0 0 0 3px var(--ok-soft); }
.qc-hl.wrong { opacity: 1; border-color: var(--bad); box-shadow: 0 0 0 3px var(--bad-soft); }
.qc-reveal { text-align: center; margin-top: 12px; display: none; }
.qc-reveal.on { display: block; animation: qcIn .4s both; }
.qc-reveal .qc-bignum { display: block; font-size: 2.2rem; color: var(--text); }

/* category picker */
.qc-segs { display: inline-flex; border: 1px solid var(--line); border-radius: 12px; overflow: hidden; margin: 6px 0 10px; }
.qc-seg { border: 0; background: var(--card); color: var(--text); padding: 9px 16px; font: 600 .95rem var(--sans); cursor: pointer; }
.qc-seg + .qc-seg { border-left: 1px solid var(--line); }
.qc-seg.on { background: var(--brass); color: var(--ink); }
.qc-search { width: 100%; min-height: 46px; padding: 0 14px; border-radius: 12px; border: 1px solid var(--line); background: var(--card); color: var(--text); font: 16px var(--sans); }
.qc-catlist h3 { margin: 18px 0 8px; color: var(--muted); font-size: .85rem; text-transform: uppercase; letter-spacing: .08em; font-family: var(--sans); }
.qc-cats { display: grid; grid-template-columns: repeat(auto-fill, minmax(170px, 1fr)); gap: 8px; }
.qc-catbtn { display: flex; justify-content: space-between; align-items: center; gap: 6px; min-height: 48px; padding: 8px 12px; text-align: left; border-radius: 12px; border: 1px solid var(--line); background: var(--card2); color: var(--text); font: 600 .92rem var(--sans); cursor: pointer; }
.qc-catbtn:hover { border-color: var(--brass); }
.qc-medal.gold { color: #f4c76b; } .qc-medal.silver { color: #d7dde2; } .qc-medal.bronze { color: #d08a52; }

/* results */
.qc-results { text-align: center; padding: 22px 16px; background: var(--card); border: 1px solid var(--line); border-radius: 22px; margin-top: 8px; }
.qc-res-ic { width: 72px; height: 72px; margin: 0 auto; border-radius: 22px; display: grid; place-items: center; background: var(--brass); color: var(--ink); }
.qc-res-ic .ic { width: 40px; height: 40px; } .qc-res-ic svg { stroke-width: 2; }
.qc-results h2 { margin: .5em 0 .1em; }
.qc-score { font: 800 clamp(2.8rem, 13vw, 4.4rem) var(--serif); color: var(--brass2); line-height: 1.05; }
.qc-best { color: var(--muted); margin: 4px 0; }
.qc-best.new { color: var(--brass2); font-weight: 800; display: inline-flex; gap: 4px; align-items: center; animation: qcPulse 1s 2; }
.qc-lines { list-style: none; padding: 0; margin: 10px 0; color: var(--muted); }
.qc-lines li { margin: 3px 0; }
.qc-marks { font-size: 1.4rem; letter-spacing: .1em; }
.qc-newbadges { margin: 12px auto; max-width: 420px; }
.qc-newbadges h3 { color: var(--brass2); }
.qc-newbadges .qc-badge { margin: 6px 0; text-align: left; }
.qc-res-btns { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; margin-top: 16px; }
.qc-loading { text-align: center; padding: 22vh 0; color: var(--muted); display: flex; flex-direction: column; align-items: center; gap: 14px; }
.qc-spinner { width: 42px; height: 42px; border-radius: 50%; border: 4px solid var(--line); border-top-color: var(--brass); animation: qcSpin .8s linear infinite; }
@keyframes qcSpin { to { transform: rotate(360deg); } }

/* reading section under the game (for search engines and curious players) */
.qc-about { margin-top: 40px; border-top: 1px solid var(--line); padding-top: 10px; color: var(--muted); }
.qc-about h2, .qc-about h3 { color: var(--text); }
.qc-about dl { margin: 0; }
.qc-about dt { font-weight: 700; color: var(--text); margin-top: 10px; }
.qc-about dd { margin: 2px 0 0; }
.qc-about details { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 10px 14px; margin: 8px 0; }
.qc-about summary { cursor: pointer; font-weight: 700; color: var(--text); }
.qc-sample { list-style: none; padding: 0; }
.qc-sample li { background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 10px 14px; margin: 8px 0; }
.qc-sample li span { display: block; color: var(--text); font-weight: 600; }

/* report link, leaderboard, challenge a friend */
.qc-report { display: inline-block; margin-top: 8px; font-size: .8rem; color: var(--muted); text-decoration: underline; }
.qc-lb, .qc-vs-send { margin: 22px auto 0; max-width: 460px; text-align: left; background: var(--card); border: 1px solid var(--line); border-radius: 16px; padding: 16px 18px; }
.qc-lb h3 { margin: 0 0 6px; display: flex; align-items: center; gap: 6px; }
.qc-lb-list { list-style: none; margin: 0 0 8px; padding: 0; }
.qc-lb-list li { display: flex; align-items: center; gap: 10px; padding: 7px 4px; border-bottom: 1px solid var(--line); }
.qc-lb-list li.me { background: color-mix(in srgb, var(--brass, #c9a227) 18%, transparent); border-radius: 8px; }
.qc-lb-pos { width: 1.6em; text-align: right; color: var(--muted); font-weight: 700; }
.qc-lb-name { flex: 1; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.qc-lb-list small { color: var(--muted); }
.qc-lb-form { margin-top: 10px; }
.qc-lb-form label { display: block; font-weight: 600; margin-bottom: 6px; }
.qc-lb-form .row, .qc-vs-send .row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 8px; }
.qc-name { flex: 1; min-width: 150px; padding: 10px 12px; border-radius: 10px; border: 1px solid var(--line); background: var(--bg); color: var(--text); font: inherit; }
.qc-vs-send p { margin: 0 0 10px; }