:root {
  color-scheme: dark;
  --bg: #060a1c;
  --panel: rgba(20, 30, 60, 0.55);
  --line: rgba(160, 185, 230, 0.22);
  --btn-line: rgba(170, 195, 240, 0.5);
  --text: #ecebe4;
  --muted: #a9b1c7;
  --accent: #f3d58a;
  --accent-text: #1a1608;
  --danger: #f0a090;
}

* { box-sizing: border-box; }
html, body { margin: 0; }
body {
  min-height: 100vh;
  background: radial-gradient(ellipse at top, #0f1d40 0%, var(--bg) 60%) fixed, var(--bg);
  color: var(--text);
  font-family: "Hiragino Sans", "Yu Gothic UI", "Meiryo", system-ui, sans-serif;
  line-height: 1.6;
  -webkit-tap-highlight-color: transparent;
}

.app { max-width: 520px; margin: 0 auto; padding: 12px 16px 32px; }

.top { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.title-btn {
  border: 0; background: none; padding: 4px 0; min-height: 44px;
  font-size: 1.3rem; font-weight: 600; letter-spacing: .18em; color: var(--text);
}
.title-btn:hover:not(:disabled) { background: none; color: var(--accent); }
.back-btn { flex: 0 0 auto; padding: 6px 14px; font-size: .9rem; }
.top .title-btn { flex: 1 1 auto; text-align: left; overflow: hidden; white-space: nowrap; text-overflow: ellipsis; }
.back-btn:not([hidden]) + .title-btn { font-size: 1.05rem; letter-spacing: .12em; }
.icon-btn { width: 44px; padding: 0; display: inline-grid; place-items: center; color: var(--muted); }
.icon-btn svg { fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.icon-btn .speaker { fill: currentColor; }
#soundBtn[aria-pressed="true"] { border-color: var(--accent); color: var(--accent); }
#soundBtn[aria-pressed="true"] .icon-off, #soundBtn[aria-pressed="false"] .icon-on { display: none; }

.notice, .toast { margin: 0 0 10px; padding: 8px 12px; border-radius: 10px; font-size: .88rem; }
.notice { background: rgba(240, 160, 144, 0.12); color: var(--danger); }
.toast { background: rgba(243, 213, 138, 0.12); color: var(--accent); }

.lead { margin: 4px 0 14px; }
.screen-title { font-size: 1.15rem; margin: 8px 0; }

.menu { display: grid; gap: 10px; }
.menu-item {
  display: grid; gap: 2px; text-align: left; padding: 14px 16px; border-radius: 16px;
  background: var(--panel); min-height: 64px;
}
.menu-item b { font-size: 1.05rem; }
.menu-item span { color: var(--muted); font-size: .86rem; }
.menu-item.sub { border-style: dashed; }
.foot-link { text-align: center; margin-top: 18px; }

.sky-wrap { display: flex; justify-content: center; }
canvas {
  display: block;
  border-radius: 18px;
  box-shadow: 0 0 0 1px var(--line), 0 18px 50px rgba(0, 0, 0, 0.45);
  user-select: none;
  -webkit-user-select: none;
}
/* 星をつなぐ夜空だけ、指でなぞっても画面が動かないようにする（ほかの夜空の上では画面を上下に動かせる） */
canvas.interactive { touch-action: none; cursor: pointer; }

.hint { min-height: 1.6em; margin: 10px 0 6px; text-align: center; color: var(--muted); font-size: .9rem; }

.panel { padding: 14px; border: 1px solid var(--line); border-radius: 16px; background: var(--panel); }
.row { display: flex; flex-wrap: wrap; gap: 8px; }
.meta { margin: 8px 0 0; color: var(--muted); font-size: .85rem; }
.meta:empty { display: none; }
.label { display: flex; justify-content: space-between; margin: 14px 0 6px; font-size: .88rem; color: var(--muted); }
.count { font-variant-numeric: tabular-nums; }
.count.over { color: var(--danger); }

button {
  font: inherit;
  font-size: .9rem;
  min-height: 44px;
  padding: 8px 14px;
  border: 1px solid var(--btn-line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.04);
  color: var(--text);
  cursor: pointer;
}
button:hover:not(:disabled) { background: rgba(255, 255, 255, 0.09); }
button:disabled { opacity: .4; cursor: default; }
button.primary { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 600; }
button.primary:hover:not(:disabled) { background: #f8e2a8; }
button.chip { padding: 5px 16px; font-size: .85rem; }
button.text-btn { margin-top: 6px; padding: 4px 12px; border: 0; background: none; color: var(--muted); text-decoration: underline; }
button:focus-visible, input:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; }

.name-row input {
  flex: 1 1 160px;
  min-width: 0;
  font: inherit;
  padding: 8px 12px;
  border: 1px solid var(--line);
  border-radius: 10px;
  background: rgba(0, 0, 0, 0.25);
  color: var(--text);
}
.linkbox {
  width: 100%; margin-top: 10px; padding: 8px; font: inherit; font-size: .82rem;
  border: 1px solid var(--line); border-radius: 8px; background: rgba(0, 0, 0, 0.3); color: var(--text);
}

.foot { margin-top: 22px; color: var(--muted); font-size: .82rem; text-align: center; }

/* 音楽の確認 */
.ask { margin: 0 0 12px; padding: 14px; border: 1px solid var(--accent); border-radius: 14px; background: rgba(20, 30, 60, 0.85); }
.ask p { margin: 0 0 10px; }
.ask p span { display: block; color: var(--muted); font-size: .85rem; }

/* 星座ものがたり */
.tabs { display: flex; flex-wrap: wrap; gap: 6px; margin: 4px 0 12px; }
.tab[aria-pressed="true"] { background: var(--accent); border-color: var(--accent); color: var(--accent-text); font-weight: 600; }
.intro h3, .story h3 { margin: 4px 0 8px; font-size: 1rem; color: var(--accent); }
.intro .sky-wrap { margin: 4px 0 10px; }
.intro p, .story p { margin: 0 0 10px; }
.list-title { margin: 18px 0 8px; font-size: 1rem; }
.cons-list { list-style: none; margin: 0; padding: 0; display: grid; gap: 8px; }
.cons-item { width: 100%; display: flex; justify-content: space-between; align-items: baseline; gap: 10px; text-align: left; border-radius: 12px; }
.cons-item span { color: var(--muted); font-size: .85rem; }
.story { margin-top: 12px; }
.story h3 { margin-top: 18px; }
.cons-name { margin: 0; font-size: 1.4rem; letter-spacing: .06em; }
.latin { margin: 0 0 6px !important; color: var(--muted); font-size: .88rem; }
.viewing { padding: 8px 12px; border-radius: 10px; background: rgba(243, 213, 138, 0.1); color: var(--accent); font-size: .9rem; }
.star-list { list-style: none; margin: 0 0 6px; padding: 0; display: grid; gap: 6px; }
.star-list li { display: grid; gap: 1px; }
.star-list span { color: var(--muted); font-size: .88rem; }
.sources { margin-top: 16px !important; color: var(--muted); font-size: .82rem; }
.sources a { color: var(--muted); }
.share-row { margin-top: 16px; }
.pager { justify-content: space-between; margin-top: 12px; }

/* このゲームについて */
.about { margin-bottom: 12px; }
.about h3 { margin: 0 0 8px; font-size: 1rem; color: var(--accent); }
.about ul { margin: 0 0 8px; padding-left: 1.2em; display: grid; gap: 6px; }
.about p { margin: 0 0 8px; }
.about a { color: var(--text); }

/* 星座クイズ */
.setup { display: grid; gap: 4px; margin-bottom: 12px; }
.choice-group { margin-top: 8px; }
.choice-label { margin: 0 0 6px; color: var(--muted); font-size: .88rem; }
.choice-group .tabs { margin: 0; }
button.big { min-height: 52px; padding: 10px 28px; font-size: 1rem; }
.friendly { margin: 0 0 12px; padding: 8px 12px; border-radius: 10px; background: rgba(243, 213, 138, 0.1); color: var(--accent); font-size: .9rem; }
.quiz-top { display: grid; gap: 6px; margin-bottom: 8px; }
.quiz-counter { margin: 0; color: var(--muted); font-size: .9rem; font-variant-numeric: tabular-nums; }
.timebar { height: 4px; border-radius: 4px; background: rgba(255, 255, 255, 0.08); overflow: hidden; }
.timebar span { display: block; height: 100%; width: 100%; background: rgba(175, 205, 255, 0.6); transition: width .2s linear; }
.quiz-prompt { margin: 12px 0 10px; font-size: 1.1rem; text-align: center; }
.quiz-feedback { min-height: 1.6em; margin: 10px 0 0; text-align: center; font-weight: 600; color: var(--accent); }
.choices { display: grid; grid-template-columns: 1fr 1fr; gap: 8px; }
.choice { border-radius: 12px; min-height: 52px; }
.choice.right { border-color: #9fd8b0; background: rgba(159, 216, 176, 0.16); }
.choice.right::before { content: '○ '; }
.choice.miss { border-color: var(--danger); background: rgba(240, 160, 144, 0.12); }
.choice.miss::before { content: '× '; }
.quiz-area .text-btn { display: block; margin: 10px auto 0; }
.score { margin: 0; font-size: 1.8rem; font-weight: 600; text-align: center; }
.marks { margin: 4px 0 12px; text-align: center; letter-spacing: .15em; word-break: break-all; color: var(--muted); }
.center { text-align: center; }
.review { list-style: none; margin: 0; padding: 0; display: grid; gap: 10px; }
.review-item { display: grid; grid-template-columns: 2em 1fr; gap: 8px; padding: 12px; border: 1px solid var(--line); border-radius: 12px; background: var(--panel); }
.review-item .mark { font-size: 1.2rem; text-align: center; }
.review-item.correct .mark { color: #9fd8b0; }
.review-item.wrong .mark { color: var(--danger); }
.review-item p { margin: 4px 0 0; }
.review-item .answer { color: var(--accent); font-size: .9rem; }
.meta-inline { color: var(--muted); font-size: .85rem; }
.pager button { flex: 1 1 0; min-width: 0; padding: 8px 10px; font-size: .85rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

[hidden] { display: none !important; }

/* 画面には出さず、読み上げだけに伝える文字 */
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; }
.next-btn { display: block; margin: 14px auto 0; min-width: 160px; }
.quiz-prompt:focus { outline: none; }
.screen-title:focus { outline: none; }

/* はじめの画面の小さな夜空 */
.home-sky { margin: 4px 0 4px; }
.home-caption { margin: 4px 0 14px !important; }
.draft-list { margin-top: 2px; }