/* Toitoki: 藍色とミントと星の黄色。文字は大きく、押せる所は48px以上 */
:root {
  --bg: #f4f3ff; --bg2: #eceaff; --card: #ffffff; --ink: #1d1b3a; --sub: #4c4a6b; --line: #dcd9f5;
  --brand: #4b47d6; --brand2: #2f2aa8; --mint: #17a67a; --mintbg: #e3f7ef; --star: #f2b705;
  --ng: #c23a4b; --ngbg: #fdebee; --shadow: 0 6px 24px rgba(47, 42, 168, .10);
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #12122a; --bg2: #1a1a3a; --card: #1f1f44; --ink: #f1f0ff; --sub: #c9c7ea; --line: #34346a;
    --brand: #8d8aff; --brand2: #b3b1ff; --mint: #5ee6b8; --mintbg: #143a33; --star: #ffd34d;
    --ng: #ff8a98; --ngbg: #3d1f2a; --shadow: 0 6px 24px rgba(0, 0, 0, .35);
    color-scheme: dark;
  }
}
* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0; background: radial-gradient(1200px 500px at 80% -10%, var(--bg2), transparent), var(--bg); color: var(--ink);
  font-family: "Hiragino Maru Gothic ProN", "Hiragino Sans", "BIZ UDPGothic", "Yu Gothic UI", "Meiryo", system-ui, sans-serif;
  font-size: 17px; line-height: 1.8; min-height: 100vh; display: flex; flex-direction: column;
}
a { color: var(--brand); }
.wrap { width: 100%; max-width: 880px; margin: 0 auto; padding: 0 16px; }
header.site { padding: 14px 0; }
header.site .wrap { display: flex; align-items: center; justify-content: space-between; gap: 4px 12px; flex-wrap: wrap; }
.logo { display: inline-flex; align-items: center; gap: 10px; text-decoration: none; color: var(--ink); min-height: 48px; }
.logo img { width: 40px; height: 40px; border-radius: 11px; }
.logo b { font-size: 24px; letter-spacing: .02em; font-weight: 800; }
.logo small { font-size: 14px; color: var(--sub); }
nav.top { display: flex; gap: 4px; }
@media (max-width: 600px) { nav.top { width: 100%; justify-content: space-between; background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 2px; } nav.top a { flex: 1; justify-content: center; padding: 8px 2px; white-space: nowrap; } nav.top a[aria-current] { background: var(--bg2); } }
nav.top a { text-decoration: none; color: var(--ink); font-weight: 700; font-size: 16px; padding: 10px 12px; border-radius: 12px; min-height: 48px; display: inline-flex; align-items: center; }
nav.top a:hover, nav.top a[aria-current] { background: var(--card); color: var(--brand); }
main { flex: 1; padding: 8px 0 40px; }

h1 { font-size: clamp(26px, 5vw, 40px); line-height: 1.35; margin: .2em 0 .5em; letter-spacing: .01em; }
h2 { font-size: clamp(21px, 3.4vw, 27px); line-height: 1.4; margin: 1.4em 0 .6em; }
.kicker { font-size: 15px; font-weight: 800; color: var(--brand); letter-spacing: .06em; margin: 0; }
.lead { font-size: 18px; color: var(--sub); margin: .2em 0 1em; }
.note { font-size: 14px; color: var(--sub); background: var(--bg2); border-radius: 12px; padding: 10px 14px; line-height: 1.7; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: 22px; padding: 24px 20px; box-shadow: var(--shadow); margin: 14px 0; }
@media (min-width: 720px) { .card { padding: 32px 36px; } }

/* ボタン */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 8px; min-height: 48px; padding: 10px 20px; border-radius: 14px; border: 2px solid var(--line);
  background: var(--card); color: var(--ink); font: inherit; font-size: 16px; font-weight: 800; text-decoration: none; cursor: pointer; }
.btn:hover { border-color: var(--brand); }
.btn:disabled { opacity: .45; cursor: default; }
.btn.primary { background: var(--brand); border-color: var(--brand); color: #fff; }
@media (prefers-color-scheme: dark) { .btn.primary { color: #12122a; } }
.btn.primary:hover { filter: brightness(1.08); }
.btn.big { min-height: 56px; font-size: 18px; padding: 12px 28px; }
.btn.ghost { border-color: transparent; background: transparent; color: var(--sub); }
:focus-visible { outline: 3px solid var(--star); outline-offset: 2px; }

/* トップ */
.hero { display: grid; gap: 20px; align-items: center; padding: 18px 0 6px; }
@media (min-width: 760px) { .hero { grid-template-columns: 1.3fr 1fr; } }
.hero h1 { font-size: clamp(30px, 6vw, 46px); }
.hero h1 em { font-style: normal; color: var(--brand); white-space: nowrap; }
.hero .art { justify-self: center; width: min(300px, 70vw); }
.modes { display: grid; gap: 14px; margin: 10px 0 18px; }
@media (min-width: 720px) { .modes { grid-template-columns: repeat(3, 1fr); } }
.mode { display: flex; flex-direction: column; gap: 6px; text-decoration: none; color: var(--ink); background: var(--card); border: 1px solid var(--line); border-radius: 22px; padding: 22px 20px; box-shadow: var(--shadow); transition: transform .15s; }
.mode:hover { transform: translateY(-2px); border-color: var(--brand); }
.mode .mi { font-size: 34px; line-height: 1; }
.mode b { font-size: 22px; }
.mode span { color: var(--sub); font-size: 16px; }
.mode .go { margin-top: auto; padding-top: 8px; color: var(--brand); font-weight: 800; font-size: 16px; }
.mode.main { background: linear-gradient(150deg, var(--brand), var(--brand2)); color: #fff; border: 0; }
.mode.main span, .mode.main .go { color: #ecebff; }
@media (prefers-color-scheme: dark) { .mode.main { background: linear-gradient(150deg, #4b47d6, #2f2aa8); } }
.stats { display: flex; gap: 12px; flex-wrap: wrap; }
.stats div, .cats div { background: var(--bg2); border-radius: 14px; padding: 10px 16px; display: flex; flex-direction: column; }
.stats span, .cats span { font-size: 14px; color: var(--sub); }
.stats b, .cats b { font-size: 24px; }
.points { display: grid; gap: 12px; padding: 0; list-style: none; }
@media (min-width: 720px) { .points { grid-template-columns: repeat(3, 1fr); } }
.points li { background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 16px 18px; }
.points b { display: block; font-size: 18px; }

/* 問題 */
.intro h1 { margin-top: .3em; }
.intro.plain { padding: 10px 0; }
.facts { padding-left: 1.2em; font-size: 18px; }
.best { font-size: 17px; background: var(--mintbg); border-radius: 12px; padding: 10px 14px; }
.qhead { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 15px; color: var(--sub); }
.qno { font-weight: 800; color: var(--ink); font-size: 17px; }
.tag { background: var(--bg2); color: var(--brand); font-weight: 800; border-radius: 999px; padding: 2px 12px; }
.timer { margin-left: auto; font-weight: 800; font-variant-numeric: tabular-nums; }
.bar { height: 8px; background: var(--bg2); border-radius: 99px; overflow: hidden; margin: 10px 0 6px; }
.bar span { display: block; height: 100%; width: 0; background: linear-gradient(90deg, var(--brand), var(--mint)); transition: width .2s; }
.qtext { font-size: clamp(22px, 4.4vw, 30px); margin: .6em 0 .7em; }
.matrix { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; max-width: 360px; margin: 0 auto 18px; background: var(--bg2); padding: 8px; border-radius: 18px; }
.mcell { background: var(--card); border-radius: 12px; aspect-ratio: 1; display: grid; place-items: center; color: var(--ink); }
.mcell.missing { color: var(--brand); border: 3px dashed var(--brand); }
.cell { width: 82%; height: 82%; }
.choices { display: grid; gap: 12px; grid-template-columns: 1fr; }
@media (min-width: 560px) { .choices { grid-template-columns: 1fr 1fr; } }
.choices.fig { grid-template-columns: repeat(2, 1fr); }
@media (min-width: 560px) { .choices.fig { grid-template-columns: repeat(4, 1fr); } }
.choice { display: flex; align-items: center; gap: 14px; min-height: 60px; padding: 12px 16px; border-radius: 16px; border: 2px solid var(--line); background: var(--card); color: var(--ink); font: inherit; font-size: 19px; font-weight: 700; text-align: left; cursor: pointer; }
.choices.fig .choice { flex-direction: column; gap: 4px; padding: 10px; }
.choices.fig .choice .cell { width: 78%; height: auto; aspect-ratio: 1; }
.choice:hover:not(:disabled) { border-color: var(--brand); background: var(--bg2); }
.choice .key { flex: none; width: 32px; height: 32px; border-radius: 10px; display: grid; place-items: center; background: var(--bg2); color: var(--brand); font-size: 16px; font-weight: 800; }
.choice.picked { border-color: var(--brand); box-shadow: inset 0 0 0 2px var(--brand); }
.choice.right { border-color: var(--mint); background: var(--mintbg); }
.choice.wrong { border-color: var(--ng); background: var(--ngbg); }
.choice:disabled { cursor: default; }
.nav { display: flex; justify-content: space-between; margin-top: 16px; gap: 8px; }
.feedback { margin: 18px 0 14px; padding: 14px 18px; border-radius: 16px; }
.feedback b { font-size: 22px; }
.feedback p { margin: .3em 0 0; }
.feedback.ok { background: var(--mintbg); } .feedback.ok b { color: var(--mint); }
.feedback.ng { background: var(--ngbg); } .feedback.ng b { color: var(--ng); }
#fb .btn { width: 100%; }

/* 結果 */
.result { text-align: center; }
.iq { margin: .2em 0; display: flex; flex-direction: column; align-items: center; }
.iq span { font-size: 18px; font-weight: 800; color: var(--sub); }
.iq b { font-size: clamp(64px, 16vw, 104px); line-height: 1.05; color: var(--brand); font-variant-numeric: tabular-nums; }
.iq small { font-size: .4em; color: var(--sub); }
.result .sub { color: var(--sub); }
.cats { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 10px; margin: 14px 0; }
.actions { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; margin-top: 14px; }
.review details { border-top: 1px solid var(--line); padding: 10px 0; }
.review summary { cursor: pointer; font-weight: 700; min-height: 44px; display: flex; gap: 8px; align-items: center; }
.review .ok { color: var(--mint); font-weight: 800; } .review .ng { color: var(--ng); font-weight: 800; }
.genres { display: grid; gap: 12px; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); }
.genre { display: flex; flex-direction: column; gap: 4px; padding: 20px; border-radius: 20px; background: var(--card); border: 1px solid var(--line); text-decoration: none; color: var(--ink); box-shadow: var(--shadow); min-height: 120px; }
.genre:hover { border-color: var(--brand); }
.genre .gi { font-size: 32px; line-height: 1; }
.genre b { font-size: 20px; }
.genre .gs { font-size: 14px; color: var(--sub); }

/* 文章ページ */
.prose { max-width: 720px; }
.prose p, .prose li { font-size: 17px; }

footer.site { border-top: 1px solid var(--line); padding: 22px 0 32px; font-size: 14px; color: var(--sub); }
footer.site nav { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-bottom: 8px; }
footer.site a { color: var(--sub); min-height: 44px; display: inline-flex; align-items: center; }

.spark { position: fixed; top: -30px; z-index: 9; color: var(--star); font-size: 28px; pointer-events: none; animation: fall 1.4s ease-in forwards; }
@keyframes fall { to { transform: translateY(110vh) rotate(200deg); opacity: .2; } }
@media (prefers-reduced-motion: reduce) { * { transition: none !important; animation: none !important; } }

/* 早押し対決 */
button.mode { font: inherit; text-align: left; cursor: pointer; }
.joinform { display: flex; gap: 8px; margin-top: 8px; }
.joinform input { flex: 1; min-width: 0; min-height: 48px; font-size: 22px; font-weight: 800; letter-spacing: .2em; padding: 6px 12px; border-radius: 12px; border: 2px solid var(--line); background: var(--bg); color: var(--ink); font-variant-numeric: tabular-nums; }
.center { text-align: center; }
.spinner { width: 54px; height: 54px; margin: 10px auto; border-radius: 50%; border: 6px solid var(--bg2); border-top-color: var(--brand); animation: spin 1s linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.roomcode { font-size: clamp(48px, 13vw, 72px); font-weight: 800; letter-spacing: .18em; color: var(--brand); margin: 0 0 6px; font-variant-numeric: tabular-nums; }
.actions.left { justify-content: flex-start; }
.players, .rank { list-style: none; padding: 0; margin: 12px 0; display: grid; gap: 8px; }
.players li, .rank li { display: flex; justify-content: space-between; align-items: center; background: var(--bg2); border-radius: 12px; padding: 10px 16px; font-size: 17px; }
.players li.me, .rank li.me { box-shadow: inset 0 0 0 2px var(--brand); }
.players b, .rank b { font-size: 22px; font-variant-numeric: tabular-nums; }
.rank { counter-reset: r; text-align: left; }
.rank li::before { counter-increment: r; content: counter(r) "位"; font-weight: 800; color: var(--brand); margin-right: 10px; }
.rank li span { flex: 1; }
.stamps { display: flex; gap: 8px; justify-content: center; flex-wrap: wrap; margin-top: 14px; }
.stamp { width: 52px; height: 52px; font-size: 26px; border-radius: 14px; border: 2px solid var(--line); background: var(--card); cursor: pointer; }
.stamp:hover { border-color: var(--brand); }
.big3 { font-size: 110px; font-weight: 800; color: var(--brand); margin: 0; line-height: 1.1; }
.toast { position: fixed; left: 50%; bottom: 24px; transform: translateX(-50%); background: var(--ink); color: var(--bg); padding: 12px 20px; border-radius: 14px; font-weight: 800; font-size: 16px; z-index: 20; max-width: calc(100vw - 32px); }
.stampfx { position: fixed; right: 16px; top: 90px; z-index: 20; display: flex; flex-direction: column; align-items: center; background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 8px 14px; box-shadow: var(--shadow); animation: pop .25s ease-out; }
.stampfx .s { font-size: 40px; line-height: 1.2; } .stampfx .n { font-size: 14px; color: var(--sub); }
@keyframes pop { from { transform: scale(.6); opacity: 0; } }
@media (min-width: 720px) { .modes.four { grid-template-columns: repeat(2, 1fr); } }
.modes > * { min-width: 0; width: 100%; }
.stamps { gap: 6px; }
.stamp { width: 46px; height: 46px; font-size: 24px; }

/* みんなのクイズ */
nav.top a { padding-left: 10px; padding-right: 10px; }
@media (max-width: 600px) { nav.top a { font-size: 15px; padding: 8px 1px; } }
.tabs, .seg { display: flex; gap: 6px; flex-wrap: wrap; margin: 4px 0 14px; }
.tabs a, .seg a { min-height: 48px; display: inline-flex; align-items: center; padding: 8px 16px; border-radius: 999px; background: var(--card); border: 1px solid var(--line); color: var(--ink); font-weight: 800; font-size: 16px; text-decoration: none; }
.tabs a[aria-current], .seg a[aria-current] { background: var(--brand); border-color: var(--brand); color: #fff; }
@media (prefers-color-scheme: dark) { .tabs a[aria-current], .seg a[aria-current] { color: #12122a; } }
.qlist { display: grid; gap: 10px; }
.qitem { display: flex; flex-direction: column; gap: 4px; background: var(--card); border: 1px solid var(--line); border-radius: 18px; padding: 16px 18px; color: var(--ink); text-decoration: none; }
a.qitem:hover { border-color: var(--brand); }
.qitem b { font-size: 19px; } .qitem span { font-size: 15px; color: var(--sub); }
.st.public { color: var(--mint); font-weight: 800; } .st.rejected, .st.hidden { color: var(--ng); font-weight: 800; }
.skel { height: 78px; border-radius: 18px; background: linear-gradient(90deg, var(--bg2), var(--card), var(--bg2)); background-size: 200% 100%; animation: sk 1.2s linear infinite; }
@keyframes sk { to { background-position: -200% 0; } }
.empty .mi { font-size: 44px; margin: 0; }
form label { display: block; font-weight: 800; font-size: 16px; margin: 10px 0; }
form label.big { font-size: 18px; }
form input:not([type=radio]), form textarea { display: block; width: 100%; margin-top: 6px; min-height: 48px; font: inherit; font-size: 17px; font-weight: 400; padding: 10px 12px; border-radius: 12px; border: 2px solid var(--line); background: var(--bg); color: var(--ink); }
form input:focus, form textarea:focus { border-color: var(--brand); outline: none; }
.qedit { border: 1px solid var(--line); border-radius: 18px; padding: 8px 16px 14px; margin: 14px 0; }
.qedit legend { font-weight: 800; font-size: 18px; padding: 0 6px; color: var(--brand); }
.opts { display: grid; gap: 8px; }
@media (min-width: 640px) { .opts { grid-template-columns: 1fr 1fr; } }
label.opt { display: flex; align-items: center; gap: 8px; margin: 0; }
label.opt input[type=radio] { width: 24px; height: 24px; flex: none; accent-color: var(--mint); }
label.opt input[name=c] { margin-top: 0; }
label.opt .key { flex: none; width: 30px; height: 30px; border-radius: 9px; display: grid; place-items: center; background: var(--bg2); color: var(--brand); }
.err { color: var(--ng); font-weight: 800; min-height: 1em; }
.note ul { margin: 6px 0 0; padding-left: 1.2em; }
.report { margin-top: 22px; text-align: left; border-top: 1px solid var(--line); padding-top: 10px; }
.report summary { cursor: pointer; color: var(--sub); min-height: 44px; display: flex; align-items: center; justify-content: center; font-size: 15px; }
.reasons { display: grid; gap: 8px; }
.qtitle { margin: 6px 0 0; }