/* 英語ゲーム — bright, playful, legible Japanese. */
:root {
  --bg: #fff7ee; --card: #ffffff; --ink: #24202a; --muted: #6f6a78; --line: #f0e4d8;
  --pink: #ff5c8a; --pink-deep: #e6386b; --sun: #ffb703; --sky: #2ec4e6; --leaf: #3ccf7a; --grape: #8a5cf6; --fire: #ff7a3d;
  --ok: #1f9d55; --ok-soft: #e4f8ec; --bad: #d63a3a; --bad-soft: #fde6e6; --warn: #b8730a; --warn-soft: #fff3d6;
  --shadow: 0 6px 20px rgba(80, 40, 20, .10);
  --l5: var(--leaf); --l4: var(--sky); --l3: var(--sun); --l2: var(--fire); --l1: var(--grape);
  --jp: "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Noto Sans JP", "Yu Gothic", "Meiryo", sans-serif;
}
@media (prefers-color-scheme: dark) {
  :root { --bg: #1b1720; --card: #26212d; --ink: #f6f1ea; --muted: #a79fb0; --line: #37303f;
          --ok-soft: #173d29; --bad-soft: #43201f; --warn-soft: #3d3016; --shadow: 0 6px 20px rgba(0,0,0,.35); }
}
* { box-sizing: border-box; -webkit-tap-highlight-color: transparent; }
html { font-size: 16px; }
body { margin: 0; background: var(--bg); color: var(--ink);
  font: 16px/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, var(--jp);
  background-image: radial-gradient(900px 400px at 110% -10%, rgba(255,92,138,.16), transparent 60%),
                    radial-gradient(700px 400px at -10% 110%, rgba(46,196,230,.16), transparent 60%); }
a { color: var(--pink-deep); text-decoration: none; }
a:hover { text-decoration: underline; }
main { max-width: 900px; margin: 0 auto; padding: 1rem 1rem 3rem; }
.top { display: flex; align-items: center; justify-content: space-between; gap: 1rem; padding: .8rem 1rem; max-width: 900px; margin: 0 auto; flex-wrap: wrap; }
.brand { font-weight: 800; font-size: 1.15rem; color: var(--ink); display: flex; align-items: center; gap: .5rem; }
.brand .mark { display: inline-grid; place-items: center; width: 2rem; height: 2rem; border-radius: 50%; background: var(--pink); color: #fff; font-family: var(--jp); font-weight: 700; }
.top nav { display: flex; align-items: center; gap: .9rem; flex-wrap: wrap; }
.top nav a { color: var(--ink); font-weight: 600; }
.level-chip, .lv { display: inline-block; padding: .1rem .55rem; border-radius: 999px; font-weight: 800; color: #fff; background: var(--grape); font-size: .85rem; }
.l5 { background: var(--l5); } .l4 { background: var(--l4); } .l3 { background: var(--l3); color: #3a2a00 !important; } .l2 { background: var(--l2); } .l1 { background: var(--l1); }
.linklike { background: none; border: none; color: var(--muted); cursor: pointer; font: inherit; padding: 0; }
.inline { display: inline; }
.foot { text-align: center; color: var(--muted); font-size: .8rem; padding: 1rem; }
[hidden] { display: none !important; }
.muted { color: var(--muted); } .small { font-size: .82rem; } .sub { font-weight: 500; color: var(--muted); font-size: .8em; }
.card { background: var(--card); border-radius: 18px; box-shadow: var(--shadow); padding: 1.2rem 1.4rem; margin-bottom: 1rem; }
.flash { background: var(--ok-soft); border-radius: 12px; padding: .6rem 1rem; margin-bottom: 1rem; }
.flash p { margin: .2rem 0; }
.banner { background: var(--warn-soft); border-radius: 12px; padding: .6rem 1rem; color: var(--warn); }
.err { background: var(--bad-soft); color: var(--bad); border-radius: 10px; padding: .5rem .8rem; }
h1 { font-size: 1.7rem; margin: .4rem 0 .6rem; letter-spacing: -.01em; }
h3 { margin: 0 0 .5rem; }
button { font: inherit; cursor: pointer; }
.primary { background: var(--pink); color: #fff; border: none; border-radius: 999px; padding: .6rem 1.3rem; font-weight: 800; box-shadow: 0 4px 0 var(--pink-deep); }
.primary:active { transform: translateY(2px); box-shadow: 0 2px 0 var(--pink-deep); }
.primary.big { font-size: 1.1rem; padding: .8rem 1.6rem; width: 100%; }
.secondary { background: var(--card); color: var(--ink); border: 2px solid var(--line); border-radius: 999px; padding: .55rem 1.2rem; font-weight: 700; }

/* auth */
.auth { max-width: 420px; margin: 2rem auto; }
.auth label { display: block; font-weight: 600; margin: .8rem 0 .3rem; }
.auth input { width: 100%; padding: .7rem .9rem; border: 2px solid var(--line); border-radius: 12px; font: inherit; background: var(--bg); color: var(--ink); }
.auth input:focus { outline: none; border-color: var(--sky); }
.auth .primary { margin-top: 1.2rem; }

/* level select */
.center { text-align: center; }
.levels { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: .8rem; margin-top: 1.2rem; }
.level-card { border: none; border-radius: 18px; padding: 1.1rem .8rem; color: #fff; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: .3rem; text-align: center; transition: transform .1s; }
.level-card:hover { transform: translateY(-3px) scale(1.02); }
.level-card.current { outline: 4px solid var(--ink); }
.level-card .big { font-size: 2.2rem; font-weight: 900; }
.level-card .blurb { font-size: .85rem; opacity: .95; }
.level-card .small { color: rgba(255,255,255,.85); }

/* hub */
.hero h1 .lv { font-size: .9rem; vertical-align: middle; }
.games { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 1rem; margin: 1rem 0 1.2rem; }
.game-card { background: var(--card); border-radius: 20px; box-shadow: var(--shadow); padding: 1.2rem; color: var(--ink); display: flex; flex-direction: column; gap: .35rem; position: relative; overflow: hidden; transition: transform .12s; }
.game-card:hover { transform: translateY(-3px); text-decoration: none; }
.game-card::before { content: ""; position: absolute; inset: 0 auto auto 0; height: 6px; width: 100%; background: linear-gradient(90deg, var(--pink), var(--sun), var(--sky)); }
.game-card .icon { font-size: 2.2rem; }
.game-card .name { font-weight: 800; font-size: 1.15rem; }
.game-card .desc { color: var(--muted); font-size: .92rem; min-height: 2.8em; }
.game-card .best { font-size: .85rem; }
.game-card .cta { align-self: flex-start; margin-top: .3rem; background: var(--pink); color: #fff; border-radius: 999px; padding: .35rem .9rem; font-weight: 800; }
.daily { margin: 1rem 0 0; }
.daily-head { display: flex; align-items: center; justify-content: space-between; gap: .6rem; flex-wrap: wrap; }
.daily-head h3 { margin: 0; }
.streak { font-weight: 800; padding: .25rem .7rem; border-radius: 999px; background: var(--line); color: var(--muted); font-size: .9rem; white-space: nowrap; }
.streak.hot { background: var(--warn-soft); color: var(--warn); }
.daily-games { display: flex; flex-wrap: wrap; gap: .5rem; margin: .4rem 0; }
.daily-chip { display: inline-flex; align-items: center; gap: .45rem; padding: .45rem .9rem .45rem .5rem; border-radius: 999px; border: 2px solid var(--line); background: var(--card); color: var(--ink); font-weight: 700; }
.daily-chip:hover { text-decoration: none; border-color: var(--pink); }
.daily-chip .tick { display: inline-grid; place-items: center; width: 1.5rem; height: 1.5rem; border-radius: 50%; background: var(--line); color: var(--muted); font-size: .8rem; font-weight: 800; }
.daily-chip.done { border-color: var(--ok); background: var(--ok-soft); }
.daily-chip.done .tick { background: var(--ok); color: #fff; }
.daily-status { margin: .3rem 0 0; font-weight: 700; color: var(--muted); }
.daily-status.ok { color: var(--ok); }
.daily-line { margin: .5rem auto; padding: .5rem .9rem; border-radius: 12px; background: var(--warn-soft); color: var(--ink); max-width: 36rem; font-weight: 700; }
.daily-line.ok { background: var(--ok-soft); }
.daily-stats { display: flex; gap: 1.6rem; margin: .4rem 0; }
.daily-stats div { display: flex; flex-direction: column; align-items: center; }
.daily-stats b { font-size: 1.6rem; line-height: 1.1; }
.daily-strip { display: flex; flex-wrap: wrap; gap: 5px; margin: .5rem 0 .2rem; }
.daily-strip .dot { width: 16px; height: 16px; border-radius: 4px; background: var(--line); }
.daily-strip .dot.done { background: var(--leaf); }
.daily-strip .dot.today { outline: 2px solid var(--ink); outline-offset: 1px; }
.streaks-head { margin-top: 1.2rem; }
.privacy-form { align-items: flex-start; }
.privacy-form .check { display: flex; gap: .5rem; align-items: flex-start; max-width: 40rem; }
.privacy-form .check input { margin-top: .2rem; }
.two-col { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1rem; }
.rank { padding-left: 1.4rem; margin: .3rem 0; }
.rank li { display: flex; gap: .6rem; align-items: baseline; padding: .15rem 0; }
.rank li span:first-child { flex: 1; }

/* round */
.round-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; flex-wrap: wrap; }
.round-head h1 { margin: 0; }
.progress { display: flex; align-items: center; gap: .6rem; font-weight: 700; }
.progress .bar { width: 160px; height: 10px; background: var(--line); border-radius: 999px; overflow: hidden; }
.progress .bar i { display: block; height: 100%; background: linear-gradient(90deg, var(--leaf), var(--sky)); transition: width .3s; }
.stage { background: var(--card); border-radius: 20px; box-shadow: var(--shadow); padding: 1.4rem; margin-top: 1rem; }
.q-level { float: right; }
.q-sentence { font-family: var(--jp); font-size: 1.65rem; line-height: 1.9; margin: .4rem 0 .8rem; word-break: keep-all; }
.q-sentence .blank { display: inline-block; min-width: 2.2em; border-bottom: 3px solid var(--pink); text-align: center; color: var(--pink); }
.q-sentence .blank.filled { color: var(--ink); }
.q-word { font-family: var(--jp); font-size: 2.6rem; font-weight: 700; margin: .3rem 0 0; }
.q-reading { font-family: var(--jp); color: var(--muted); font-size: 1.05rem; }
.choices { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: .6rem; margin-top: .8rem; }
.choice { background: var(--bg); color: var(--ink); border: 2px solid var(--line); border-radius: 14px; padding: .8rem .9rem; font-size: 1.05rem; font-family: var(--jp); text-align: left; transition: transform .08s; }
.choice.particle { font-size: 1.6rem; text-align: center; }
.choice:hover:not(:disabled) { transform: translateY(-2px); border-color: var(--sky); }
.choice:disabled { cursor: default; opacity: .7; }
.choice.right { background: var(--ok-soft); border-color: var(--ok); opacity: 1; }
.choice.wrong { background: var(--bad-soft); border-color: var(--bad); opacity: 1; animation: shake .35s; }
.progress .bar.lives i { background: linear-gradient(90deg, var(--fire), var(--bad)); }
.clock { clear: both; height: 8px; background: var(--line); border-radius: 999px; overflow: hidden; margin: .5rem 0 1rem; }
.clock i { display: block; height: 100%; width: 100%; background: linear-gradient(90deg, var(--sky), var(--leaf)); transition-property: width; transition-timing-function: linear; }
.clock.fast i { background: linear-gradient(90deg, var(--fire), var(--pink)); }
.fast-badge { float: right; margin-right: .5rem; background: var(--fire); color: #fff; border-radius: 999px; padding: .1rem .6rem; font-weight: 800; font-size: .85rem; animation: pulse .45s infinite alternate; }
.snap { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; align-items: center; min-height: 8rem; }
.snap-kanji { font-family: var(--jp); font-size: 3.4rem; font-weight: 700; text-align: center; line-height: 1.2; word-break: keep-all; }
.snap-def { font-size: 1.35rem; font-weight: 600; text-align: center; border-left: 3px solid var(--line); padding: .6rem 1rem; }
.snap-buttons { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; margin-top: 1rem; }
.snap-btn { border: none; border-radius: 16px; padding: 1rem; font-size: 1.3rem; font-weight: 900; color: #fff; transition: transform .06s; }
.snap-btn.no { background: var(--bad); box-shadow: 0 5px 0 #9d2626; }
.snap-btn.yes { background: var(--ok); box-shadow: 0 5px 0 #14613a; }
.snap-btn:active:not(:disabled) { transform: translateY(3px); box-shadow: none; }
.snap-btn:disabled { opacity: .55; cursor: default; }
.snap-btn.right { outline: 4px solid var(--sun); opacity: 1; }
.snap-btn.wrong { animation: shake .35s; opacity: 1; }
.snap-keys { text-align: center; margin: .6rem 0 0; }
@media (max-width: 420px) { .snap-kanji { font-size: 2.4rem; } .snap-def { font-size: 1.1rem; } }
.trail { display: flex; flex-wrap: wrap; align-items: center; gap: .3rem; font-family: var(--jp); margin: .2rem 0 .4rem; }
.trail span { background: var(--bg); border: 2px solid var(--line); border-radius: 999px; padding: .1rem .6rem; font-size: 1rem; }
.trail i { color: var(--muted); font-style: normal; }
.q-chain { font-family: var(--jp); font-size: 3rem; font-weight: 700; margin: .3rem 0 .6rem; display: flex; align-items: center; gap: .3rem; line-height: 1.2; }
.q-chain .anchor { padding: .1rem .35rem; }
.q-chain .slot { display: inline-grid; place-items: center; min-width: 1.35em; height: 1.35em; border: 3px dashed var(--pink); border-radius: 14px; color: var(--pink); font-size: .9em; }
.q-chain .slot.filled { border-style: solid; border-color: var(--ok); color: var(--ink); background: var(--ok-soft); }
.q-chain .slot.missed { border-color: var(--bad); background: var(--bad-soft); }
.choices.kanji { grid-template-columns: repeat(4, 1fr); }
.q-ladder { font-family: var(--jp); font-size: 2.6rem; font-weight: 700; margin: .3rem 0 .6rem; display: flex; align-items: center; gap: .7rem; flex-wrap: wrap; line-height: 1.15; }
.q-ladder .from { display: inline-flex; flex-direction: column; align-items: center; color: var(--muted); }
.q-ladder .from .en { font-size: .85rem; font-weight: 600; letter-spacing: 0; }
.q-ladder .arrow { color: var(--pink); }
.q-ladder .to { color: var(--ink); }
.q-ladder .changed { color: var(--pink); border-bottom: 5px solid var(--pink); padding-bottom: .05em; }
.chain-list { list-style: none; padding: 0; margin: 1rem 0 0; border-top: 2px dashed var(--line); }
.chain-list li { display: flex; align-items: baseline; gap: .6rem; padding: .45rem 0; border-bottom: 1px solid var(--line); animation: pop .3s ease-out; }
.chain-list li b { font-family: var(--jp); font-size: 1.35rem; }
.chain-list .mark { font-weight: 900; }
.chain-list li.ok .mark { color: var(--ok); } .chain-list li.bad .mark { color: var(--bad); }
.chain-list .reading { font-family: var(--jp); color: var(--muted); }
.chain-list .en { color: var(--muted); font-size: .9rem; }
.choices.kanji .choice { font-size: 1.9rem; padding: .6rem .3rem; }
.pairs { display: grid; grid-template-columns: repeat(5, 1fr); gap: .45rem; margin-top: .8rem; }
.ptile { position: relative; aspect-ratio: 1 / 1.15; border: none; background: transparent; padding: 0; perspective: 600px; cursor: pointer; }
.ptile .face { position: absolute; inset: 0; display: grid; place-items: center; border-radius: 12px; backface-visibility: hidden; transition: transform .5s, box-shadow .15s, border-color .15s; font-family: var(--jp); padding: .15rem; line-height: 1.15; word-break: break-all; }
.ptile .front { background: var(--card); border: 2px solid var(--line); box-shadow: 0 3px 0 var(--line); color: var(--ink); }
.ptile.k .front { font-size: 2rem; font-weight: 700; }
.ptile.r .front { font-size: 1.2rem; background: var(--bg); }
.ptile.r.long .front { font-size: 1rem; letter-spacing: -.03em; }
.ptile .back { background: linear-gradient(135deg, var(--leaf), var(--sky)); color: #fff; transform: rotateY(180deg); font-size: 1.5rem; }
.ptile.sel .front { border-color: var(--sun); box-shadow: 0 0 0 3px var(--sun); }
.ptile.done { pointer-events: none; }
.ptile.done .front { transform: rotateY(180deg); }
.ptile.done .back { transform: rotateY(0); }
.ptile.miss .front { border-color: var(--bad); background: var(--bad-soft); animation: shake .35s; }
.ptile:disabled { cursor: default; }
@media (max-width: 420px) { .pairs { gap: .3rem; } .ptile.k .front { font-size: 1.5rem; } .ptile.r .front { font-size: .95rem; } .ptile.r.long .front { font-size: .8rem; } }
.tiles { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .6rem; min-height: 3rem; }
.tile { background: var(--bg); color: var(--ink); border: 2px solid var(--line); border-radius: 12px; padding: .5rem .8rem; font-family: var(--jp); font-size: 1.3rem; }
.tile:hover:not(:disabled) { border-color: var(--sky); }
.tile.used { visibility: hidden; }
.answer-line { min-height: 3.4rem; border: 2px dashed var(--line); border-radius: 14px; padding: .5rem .8rem; display: flex; flex-wrap: wrap; gap: .4rem; align-items: center; font-family: var(--jp); font-size: 1.35rem; }
.answer-line .placed { background: var(--card); border: 2px solid var(--sky); border-radius: 10px; padding: .25rem .6rem; font: inherit; color: inherit; }
.answer-line .placed:hover:not(:disabled) { border-color: var(--pink); }
.answer-line .placed:disabled { cursor: default; }
.answer-line .gap { width: 14px; min-height: 2.4rem; align-self: stretch; margin: 0 -.2rem; padding: 0; border: 0; background: transparent; position: relative; }
.answer-line .gap::before { content: ""; position: absolute; left: 5px; top: 18%; bottom: 18%; width: 3px; border-radius: 2px; background: var(--line); }
.answer-line .gap:hover::before { background: var(--sky); }
.answer-line .gap.here::before { left: 4px; width: 5px; background: var(--pink); animation: caret 1s step-end infinite; }
@keyframes caret { 50% { opacity: .25; } }
.answer-line .placed.ok, .correct-line .placed.ok { border-color: var(--ok); background: var(--ok-soft); }
.answer-line .placed.bad { border-color: var(--bad); background: var(--bad-soft); }
.correct-line { margin-top: .5rem; display: flex; flex-wrap: wrap; gap: .4rem; align-items: center; font-family: var(--jp); font-size: 1.35rem; }
.correct-line .placed { background: var(--card); border: 2px solid var(--ok); border-radius: 10px; padding: .25rem .6rem; }
.correct-line .tail { color: var(--muted); }
.answer-line .tail { color: var(--muted); }
.row { display: flex; gap: .6rem; margin-top: .8rem; flex-wrap: wrap; align-items: center; }
.feedback { margin-top: .8rem; border-radius: 16px; padding: .9rem 1.1rem; font-weight: 600; }
.feedback.ok { background: var(--ok-soft); color: var(--ok); }
.feedback.bad { background: var(--bad-soft); color: var(--bad); }
.feedback .detail { display: block; font-weight: 400; color: var(--ink); margin-top: .35rem; font-family: var(--jp); }
.feedback .detail .en { color: var(--muted); font-family: inherit; }
.feedback .next { margin-top: .6rem; display: flex; align-items: center; gap: .8rem; flex-wrap: wrap; }
.feedback.bad { cursor: pointer; }
.feedback .detail .jp { font-family: var(--jp); font-size: 1.15rem; color: var(--ink); }
.feedback .detail .reading { color: var(--muted); font-family: var(--jp); }
.feedback .rule { margin-top: .5rem; font-weight: 400; color: var(--ink); background: var(--card); border-radius: 10px; padding: .5rem .7rem; }
.feedback .rule a { margin-left: .3rem; }
.last { margin-top: .6rem; border-radius: 12px; padding: .5rem .9rem; background: var(--ok-soft); color: var(--ink); font-size: .95rem; display: flex; gap: .5rem; align-items: baseline; flex-wrap: wrap; animation: pop .25s ease-out; }
.last .mark { color: var(--ok); font-weight: 900; }
.last .jp { font-family: var(--jp); font-size: 1.05rem; }
.last .reading, .last .en { color: var(--muted); }
.last .reading { font-family: var(--jp); }
.flash-mark { position: fixed; inset: 0; display: grid; place-items: center; pointer-events: none; z-index: 50; font-size: 11rem; font-weight: 900; line-height: 1; animation: flashmark .45s ease-out forwards; }
.flash-mark.ok { color: var(--ok); } .flash-mark.bad { color: var(--bad); }
@keyframes flashmark { 0% { opacity: 0; transform: scale(.5); } 15% { opacity: .9; transform: scale(1.05); } 65% { opacity: .9; transform: scale(1); } 100% { opacity: 0; transform: scale(1.1); } }
.hint-line { font-family: var(--jp); color: var(--muted); font-size: 1.15rem; margin: -.4rem 0 .4rem; }
.hint-line .blank.small { min-width: 1.6em; border-bottom: 2px solid var(--pink); display: inline-block; text-align: center; color: var(--pink); }
.hint-row { margin: 0 0 .4rem; }
.hint { color: var(--pink-deep); font-weight: 600; }
.hearts { color: var(--pink); letter-spacing: .05em; font-size: 1.1rem; }
@keyframes shake { 0%,100% { transform: translateX(0) } 25% { transform: translateX(-6px) } 75% { transform: translateX(6px) } }
@keyframes pop { 0% { transform: scale(.6); opacity: 0 } 100% { transform: scale(1); opacity: 1 } }

/* result */
.result { text-align: center; animation: pop .3s ease-out; }
.result .score { font-size: 3.2rem; font-weight: 900; margin: .2rem 0; }
.result .change { display: inline-block; padding: .5rem 1.1rem; border-radius: 999px; font-weight: 800; font-size: 1.1rem; margin: .4rem 0 .8rem; }
.result .change.up { background: var(--ok-soft); color: var(--ok); }
.result .change.down { background: var(--warn-soft); color: var(--warn); }
.result .change.repeat { background: var(--line); color: var(--ink); }
.result .review { text-align: left; margin-top: 1rem; }
.result .review li { padding: .35rem 0; border-bottom: 1px solid var(--line); font-family: var(--jp); }
.result .review .en { color: var(--muted); font-family: inherit; font-size: .85rem; }
@keyframes pulse { from { transform: scale(1); } to { transform: scale(1.08); } }
.confetti { position: fixed; inset: 0; pointer-events: none; overflow: hidden; }
.confetti i { position: absolute; top: -10px; width: 10px; height: 14px; border-radius: 2px; animation: fall 1.6s linear forwards; }
@keyframes fall { to { transform: translateY(110vh) rotate(720deg); opacity: .9 } }

/* leaderboard */
.period-row { display: flex; align-items: center; gap: .7rem; flex-wrap: wrap; margin: .2rem 0 .8rem; }
.period-row select { font: inherit; font-weight: 700; padding: .35rem .6rem; border-radius: 10px; border: 2px solid var(--line); background: var(--card); color: var(--ink); }
.small-btn { padding: .3rem .8rem; font-size: .9rem; }
details.danger { margin-top: 1rem; }
details.danger summary { cursor: pointer; }
details.danger input { font: inherit; padding: .35rem .5rem; border: 2px solid var(--line); border-radius: 8px; background: var(--bg); color: var(--ink); margin-left: .3rem; width: 9rem; }
.danger-btn { border-color: var(--bad); color: var(--bad); }
.sound { font-size: 1.1rem; vertical-align: middle; margin-left: .3rem; opacity: .8; }
.sound.off { opacity: .35; }
/* tales */
.vol-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 1rem; }
.vol { display: flex; gap: 1rem; align-items: flex-start; }
.vol .cover { width: 96px; border-radius: 10px; flex: none; box-shadow: var(--shadow); }
.vol h3 { margin: 0 0 .4rem; }
.story-list { list-style: none; padding: 0; margin: 0; }
.story-list li { padding: .3rem 0; }
.story-list b { font-family: var(--jp); font-size: 1.1rem; }
.tale-head h1 { margin: .2rem 0 .6rem; font-family: var(--jp); }
.tale-head .sub { display: block; font-family: inherit; }
.player audio { width: 100%; margin: .6rem 0 .3rem; }
.player .speeds { display: flex; gap: .4rem; }
.sync { background: var(--warn-soft); border-radius: 12px; padding: .7rem 1rem; margin-top: .6rem; }
.text { font-family: var(--jp); }
.sent { margin: 0; padding: .45rem .6rem; border-radius: 12px; font-size: 1.35rem; line-height: 2; cursor: pointer; transition: background .15s; }
.sent .en { display: none; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif; font-size: .95rem; line-height: 1.4; color: var(--muted); margin-top: .1rem; }
.sent.hover, .sent:focus { background: var(--bg); outline: none; }
.sent.hover .en, .sent.open .en, .text.all-en .sent .en { display: block; }
.sent.now { background: var(--warn-soft); box-shadow: inset 4px 0 0 var(--sun); }
.sent.next { outline: 3px dashed var(--pink); }
.sent.marked { background: var(--ok-soft); }
.w { border-bottom: 2px dotted var(--sky); cursor: help; }
.w:hover { background: var(--ok-soft); }
.tip { position: absolute; z-index: 60; max-width: 320px; background: var(--ink); color: var(--bg); border-radius: 10px; padding: .5rem .7rem; font-size: .9rem; line-height: 1.35; box-shadow: var(--shadow); pointer-events: none; }
.tip b { font-family: var(--jp); font-size: 1.05rem; } .tip i { opacity: .8; margin-left: .3rem; }
.notes .gp summary { cursor: pointer; font-size: 1rem; padding: .3rem 0; }
.notes .gp summary span[lang=ja] { font-family: var(--jp); font-size: 1.1rem; }
.notes .gp p { margin: .2rem 0 .8rem 1rem; color: var(--ink); }
@media (max-width: 480px) { .sent { font-size: 1.2rem; } .vol { flex-direction: column; } }
/* practice */
.practice-form .opt-row { display: flex; align-items: center; gap: .5rem; flex-wrap: wrap; margin: .6rem 0; }
.practice-form .lv.dim { opacity: .45; } .practice-form .lv.chosen { outline: 3px solid var(--ink); }
.pill { border: 2px solid var(--line); border-radius: 999px; padding: .25rem .7rem; background: var(--card); cursor: pointer; font-weight: 600; }
.pill input { accent-color: var(--pink); }
.pill:has(input:checked) { border-color: var(--pink); background: var(--bad-soft); }
.deck-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: .8rem; margin: 1rem 0; }
.deck-card { text-align: left; background: var(--card); border: none; border-radius: 18px; box-shadow: var(--shadow); padding: 1rem 1.1rem; color: var(--ink); display: flex; flex-direction: column; gap: .3rem; transition: transform .12s; font: inherit; }
.deck-card:hover:not(:disabled) { transform: translateY(-3px); }
.deck-card:disabled { opacity: .5; cursor: default; }
.deck-card .icon { font-size: 1.9rem; }
.deck-card .name { font-weight: 800; font-size: 1.05rem; }
.deck-card .desc { color: var(--muted); font-size: .9rem; }
.deck-card .stat { font-size: .85rem; } .deck-card .stat .due { color: var(--pink-deep); }
.deck-card .cta { align-self: flex-start; margin-top: .3rem; background: var(--pink); color: #fff; border-radius: 999px; padding: .3rem .8rem; font-weight: 800; }
.fstage { min-height: 16rem; display: grid; place-items: center; }
.fcard { position: relative; width: 100%; max-width: 520px; min-height: 15rem; perspective: 1000px; cursor: pointer; }
.fcard .side { position: absolute; inset: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .4rem; padding: 1.2rem; border-radius: 20px; backface-visibility: hidden; transition: transform .45s; text-align: center; }
.fcard .front { background: var(--bg); border: 2px solid var(--line); }
.fcard .back { background: var(--ok-soft); border: 2px solid var(--ok); transform: rotateY(180deg); }
.fcard.flipped .front { transform: rotateY(180deg); } .fcard.flipped .back { transform: rotateY(0); }
.f-main.jp { font-family: var(--jp); font-size: 3rem; font-weight: 700; line-height: 1.2; word-break: keep-all; }
.f-main.en { font-size: 1.5rem; font-weight: 700; }
.f-reading { font-family: var(--jp); color: var(--muted); font-size: 1.3rem; }
.f-note { font-family: var(--jp); color: var(--muted); font-size: 1rem; margin-top: .3rem; }
.f-hint, .f-box { position: absolute; bottom: .6rem; right: .9rem; }
.fbuttons { display: grid; grid-template-columns: 1fr 1fr; gap: .8rem; margin-top: 1rem; }
@media (max-width: 420px) { .f-main.jp { font-size: 2.2rem; } }
.tabs { display: flex; gap: .5rem; flex-wrap: wrap; margin: .5rem 0 1rem; }
.tab { border: 2px solid var(--line); background: var(--card); border-radius: 999px; padding: .35rem .9rem; font-weight: 700; color: var(--ink); }
.tab.active { background: var(--ink); color: var(--bg); border-color: var(--ink); }
.table { width: 100%; border-collapse: collapse; }
.table th { text-align: left; font-size: .8rem; color: var(--muted); padding: .3rem .5rem; }
.table td { padding: .45rem .5rem; border-top: 1px solid var(--line); }
.table tr.me td { background: var(--warn-soft); }
.history { list-style: none; padding: 0; margin: 0; }
.history li { padding: .35rem 0; border-bottom: 1px solid var(--line); }
.chg.up { color: var(--ok); font-weight: 700; } .chg.down { color: var(--warn); font-weight: 700; } .chg.repeat { color: var(--muted); }

/* grammar */
.grammar .gp summary { cursor: pointer; font-size: 1.05rem; }
.grammar .gp code { background: var(--bg); padding: .1rem .4rem; border-radius: 6px; font-family: var(--jp); margin-left: .4rem; }
.jp { font-family: var(--jp); }
.ex { font-size: 1.15rem; }
.reading { color: var(--muted); font-size: .9rem; }
.prose ul { padding-left: 1.2rem; }
@media (max-width: 600px) { .q-sentence { font-size: 1.4rem; } .progress .bar { width: 110px; } .stage { padding: 1rem; } }
#sync-start { color: var(--pink-deep); }
.help h2 { margin-top: 1.6rem; }
.help .toc { font-size: .95rem; line-height: 1.8; }
.help dl dt { font-weight: 800; margin-top: .8rem; }
.help dl dd { margin: .2rem 0 0; }
.help ol, .help ul { padding-left: 1.2rem; }
.help li { margin: .3rem 0; }

/* Guess the Onomatopoeia */
.choices.ono .choice { font-size: 1.35rem; text-align: center; }
.q-en { margin: .2rem 0 0; }
.kind-hint { color: var(--muted); }
#last .small, .feedback .small { font-size: .95rem; }
/* Admin: the player table and the password forms */
.admin-table { width: 100%; border-collapse: collapse; margin-top: .6rem; }
.admin-table th { text-align: left; font-size: .8rem; text-transform: uppercase; letter-spacing: .04em; color: var(--muted); border-bottom: 2px solid var(--line); padding: .3rem .6rem .3rem 0; }
.admin-table td { padding: .45rem .6rem .45rem 0; border-bottom: 1px solid var(--line); vertical-align: middle; }
.admin-table .num { text-align: right; font-variant-numeric: tabular-nums; }
.pw-form { display: flex; flex-wrap: wrap; gap: .8rem; align-items: flex-end; margin-top: .6rem; }
.pw-form label { display: flex; flex-direction: column; gap: .2rem; font-size: .9rem; }
.pw-form input, .pw-form select { font: inherit; padding: .45rem .6rem; border: 2px solid var(--line); border-radius: 10px; background: var(--bg); color: var(--ink); min-width: 11rem; }
.pw-issued { border: 2px solid var(--pink); }
.pw-value code { font-size: 1.8rem; font-weight: 700; letter-spacing: .06em; user-select: all; }
details#password { margin-top: 1rem; }
details#password summary { cursor: pointer; }
.table-scroll { overflow-x: auto; }
/* Mastery: progress page, hub chips, review and mastered badges */
.review-chip { display: inline-block; margin-left: .4rem; padding: .1rem .5rem; border-radius: 999px; background: var(--sun); color: #3b2a00; font-size: .75rem; font-weight: 800; vertical-align: middle; }
.mastered-badge { display: inline-block; margin-left: .4rem; padding: .05rem .5rem; border-radius: 999px; background: var(--ok-soft); color: var(--ok); font-size: .8rem; font-weight: 800; }
.mastered-now { margin: .6rem auto; padding: .6rem .9rem; border-radius: 12px; background: var(--ok-soft); color: var(--ink); max-width: 36rem; font-family: var(--jp); }
.mastered-chip { display: block; font-size: .8rem; color: var(--ok); font-weight: 700; margin-top: .2rem; }
.progress-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1rem; margin: 1rem 0; }
.game-progress h3 { margin: 0 0 .2rem; }
.levels-table { width: 100%; border-collapse: collapse; margin-top: .4rem; }
.levels-table td { padding: .2rem .3rem; vertical-align: middle; }
.levels-table .bar-cell { width: 100%; }
.levels-table .num { text-align: right; white-space: nowrap; font-variant-numeric: tabular-nums; }
.bar-track { height: 12px; border-radius: 999px; background: var(--line); overflow: hidden; }
.bar-track.small { height: 8px; }
.bar-fill { height: 100%; background: linear-gradient(90deg, var(--leaf), var(--sky)); border-radius: 999px; transition: width .3s; }
.due { color: var(--warn); font-weight: 700; }
.mastered-list { list-style: none; padding: 0; margin: .4rem 0 0; display: flex; flex-wrap: wrap; gap: .4rem .9rem; }
.mastered-list li { font-family: var(--jp); }

.feedback.retry { background: var(--warn-soft); color: var(--warn); }

/* 英語ゲーム: English text gets a clean Latin face; the mark is sky blue */
:root { --en: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif; }
.brand .mark.eigo { background: var(--sky); }
.en, [lang="en"] { font-family: var(--en); }
.q-sentence.en { font-size: 1.5rem; line-height: 1.7; word-break: normal; }
.q-sentence.en .tok { margin-right: .32em; }
.q-sentence.en .punct { margin-left: -.32em; }
.q-sentence.en .blank { letter-spacing: .05em; margin-right: .32em; }
.q-word.en { font-size: 2.6rem; letter-spacing: .01em; }
.q-en { font-size: 1rem; margin: 0 0 .6rem; }
.snap-kanji.en { font-size: 2.6rem; word-break: normal; overflow-wrap: anywhere; }
.tile.en { font-size: 1.15rem; padding: .5rem .75rem; }
.answer-line.en { font-size: 1.15rem; }
.answer-line.en .placed, .correct-line .placed { font-family: var(--en); }
.q-ladder.en { font-size: 2.4rem; letter-spacing: .02em; }
.q-ladder.en .from .en { font-family: var(--jp); }
.ptile.k .face { font-family: var(--en); font-size: 1.05rem; }
.ptile.k.long .face { font-size: .85rem; }
.ptile.r .face { font-family: var(--jp); }
.chain-list li b[lang="en"] { font-family: var(--en); }
.choice[lang="en"] { font-family: var(--en); }
.f-main.en { font-family: var(--en); }
.f-reading { color: var(--muted); font-size: 1rem; }
.f-note { color: var(--muted); font-size: .95rem; margin-top: .4rem; }