/* 見た目は mock/zukan.html を引き継ぐ。エラー表示に赤は使わない（仕様書 6-2） */
:root {
  --bg: #fdfaf5;
  --surface: #ffffff;
  --surface-2: #f6f1e9;
  --ink: #3f3a35;
  --ink-soft: #6f665f;
  --line: #e6ded2;
  --accent: #2f9e8f;
  --accent-strong: #1f7a6e; /* 白文字を載せる背景。コントラスト比 4.5:1 以上 */
  --accent-ink: #ffffff;
  --rare: #d9a021;
  --secret: #7c5cc4;
  --note-bg: #f8efe2;
  --shadow: 0 2px 10px rgba(93, 78, 55, .09);
  --radius: 18px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --bg: #1e1c1a;
    --surface: #2a2724;
    --surface-2: #322e2a;
    --ink: #f0eae2;
    --ink-soft: #b3aaa2;
    --line: #3f3a35;
    --accent-strong: #237a6f;
    --note-bg: #3a332b;
    --shadow: 0 2px 12px rgba(0, 0, 0, .35);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --bg: #1e1c1a;
  --surface: #2a2724;
  --surface-2: #322e2a;
  --ink: #f0eae2;
  --ink-soft: #b3aaa2;
  --line: #3f3a35;
  --accent-strong: #237a6f;
  --note-bg: #3a332b;
  --shadow: 0 2px 12px rgba(0, 0, 0, .35);
  color-scheme: dark;
}

* { box-sizing: border-box; }
html { font-size: 16px; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Hiragino Maru Gothic ProN", "Yu Gothic UI", "Meiryo", system-ui, sans-serif;
  line-height: 1.7;
  -webkit-text-size-adjust: 100%;
}
.wrap { max-width: 880px; margin: 0 auto; padding: 24px 16px 48px; }
a { color: inherit; }
:focus-visible { outline: 3px solid var(--accent-strong); outline-offset: 2px; }

.loading { text-align: center; color: var(--ink-soft); padding: 48px 0; }

/* カード・ボタン */
.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 24px 20px;
}
.narrow { max-width: 440px; margin: 0 auto; }
.center { text-align: center; }
h1 { font-size: 1.45rem; margin: 0 0 12px; letter-spacing: .02em; }
.btn {
  display: block; width: 100%;
  font: inherit; font-weight: 700; font-size: 1.05rem; text-align: center; text-decoration: none;
  padding: 12px 20px; border: 1px solid var(--line); border-radius: 12px;
  background: var(--surface-2); color: var(--ink); cursor: pointer;
}
.btn.primary { background: var(--accent-strong); border-color: var(--accent-strong); color: var(--accent-ink); }
.btn:hover { filter: brightness(1.05); }
.btn:disabled { opacity: .6; cursor: default; }
.text-btn {
  font: inherit; font-size: .95rem; background: none; border: none; padding: 8px;
  color: var(--ink-soft); text-decoration: underline; cursor: pointer;
}
.back {
  display: inline-block; margin: 0 0 12px; padding: 4px 0;
  font: inherit; font-size: .95rem; color: var(--ink-soft); text-decoration: none;
  background: none; border: none; cursor: pointer;
}
.stack { display: grid; gap: 12px; margin-top: 20px; }
.soft { color: var(--ink-soft); font-size: .95rem; }
.note {
  background: var(--note-bg); border-radius: 12px; padding: 12px 14px; margin: 16px 0 0;
  font-size: .95rem;
}
.note:empty { display: none; }

/* S-01 スタート */
.hero { text-align: center; padding: 40px 20px 32px; }
.hero h1 { font-size: 1.7rem; margin-bottom: 16px; }
.hero p { margin: 0 0 28px; font-size: 1.05rem; }
.hero .stack { max-width: 320px; margin: 0 auto; }
.hero-stamps { display: flex; justify-content: center; gap: 10px; margin-bottom: 20px; }
.hero-stamps img { width: 56px; height: 56px; }

/* S-02 ニックネームえらび */
.names { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin: 16px 0 8px; }
.name-btn {
  font: inherit; font-size: 1.05rem; line-height: 1.5; font-weight: 700;
  padding: 14px 8px; border: 1px solid var(--line); border-radius: 14px;
  background: var(--surface-2); color: var(--ink); cursor: pointer;
}
.name-btn:hover { border-color: var(--accent); }

/* S-03 / S-08 */
.chosen { font-size: 1.2rem; font-weight: 700; margin: 4px 0 12px; }
.pin {
  display: block; width: 11.5ch; margin: 20px auto 0;
  font: inherit; font-size: 2rem; font-weight: 700; letter-spacing: .5em; text-align: center;
  padding: 8px 0 8px .5em;
  border: 2px solid var(--line); border-radius: 14px; background: var(--bg); color: var(--ink);
}
.pin:focus { border-color: var(--accent); outline: none; }
.selects { display: grid; grid-template-columns: 1fr 1fr; gap: 10px; margin-top: 16px; }
select {
  font: inherit; font-size: 1.05rem; padding: 10px; border: 1px solid var(--line); border-radius: 12px;
  background: var(--bg); color: var(--ink); width: 100%;
}
label.sr { position: absolute; width: 1px; height: 1px; overflow: hidden; clip: rect(0 0 0 0); }

/* S-04 ずかん（mock/zukan.html と同じ） */
header.top {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 20px 20px 18px;
  margin-bottom: 20px;
}
.top-row { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; }
.settings-link { font-size: .9rem; color: var(--ink-soft); }
.who { display: flex; flex-wrap: wrap; gap: 8px 14px; align-items: center; font-size: .95rem; }
.chip {
  background: var(--surface-2);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 5px 14px;
}
.visits { color: var(--ink-soft); }
.visits strong { color: var(--ink); }

.getbox {
  margin-top: 16px; padding-top: 16px; border-top: 1px dashed var(--line);
  display: flex; flex-wrap: wrap; gap: 10px; align-items: center;
}
.getbox label { font-size: .9rem; color: var(--ink-soft); flex-basis: 100%; }
.getbox input {
  flex: 1 1 200px; min-width: 0;
  font: inherit; font-size: 1rem;
  padding: 10px 14px;
  border: 1px solid var(--line); border-radius: 12px;
  background: var(--bg); color: var(--ink);
}
.getbox button {
  font: inherit; font-weight: 700; font-size: 1rem;
  padding: 10px 22px; border: none; border-radius: 12px;
  background: var(--accent-strong); color: var(--accent-ink); cursor: pointer;
}

h2 {
  font-size: 1.08rem; margin: 30px 0 4px;
  display: flex; align-items: center; gap: 10px;
}
h2 .bar { width: 6px; height: 20px; border-radius: 3px; background: var(--accent); flex: none; }
h2.rare .bar { background: var(--rare); }
h2.secret .bar { background: var(--secret); }
h2 .count { margin-left: auto; font-size: .9rem; font-weight: 400; color: var(--ink-soft); }
.lead { margin: 0 0 14px; font-size: .9rem; color: var(--ink-soft); }

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(98px, 1fr));
  gap: 14px;
}
.cell {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 10px 6px 8px;
  text-align: center;
  box-shadow: var(--shadow);
  cursor: pointer;
  font: inherit; color: inherit;
  display: flex; flex-direction: column; align-items: center; gap: 6px;
}
.cell:hover { transform: translateY(-2px); transition: transform .12s; }
.cell img { width: 100%; max-width: 76px; height: auto; display: block; }
.cell .nm { font-size: .8rem; line-height: 1.4; color: var(--ink-soft); }
.cell.got .nm { color: var(--ink); font-weight: 700; }
.cell.yet img { filter: grayscale(1) contrast(.28) opacity(.55); }
.cell.coming { border-style: dashed; }

/* ダイアログ（S-07 スタンプ詳細・確認） */
dialog {
  border: 1px solid var(--line); border-radius: var(--radius);
  background: var(--surface); color: var(--ink);
  padding: 24px; max-width: 340px; width: calc(100% - 32px);
  box-shadow: 0 8px 40px rgba(0, 0, 0, .25);
}
dialog::backdrop { background: rgba(40, 34, 28, .45); }
dialog img { width: 132px; display: block; margin: 0 auto 12px; }
dialog img.yet { filter: grayscale(1) contrast(.28) opacity(.55); }
dialog h3 { margin: 0 0 6px; text-align: center; font-size: 1.15rem; }
dialog .meta { text-align: center; font-size: .9rem; color: var(--ink-soft); margin: 0 0 12px; }
dialog p.flavor { margin: 0 0 18px; text-align: center; }
dialog .stack { margin-top: 8px; }

/* S-06 開封演出 → 結果 */
.opening { min-height: 70vh; display: grid; place-items: center; cursor: pointer; }
.stage {
  --glow: var(--accent);
  --t-shake: .6s; --t-open: .8s; --t-appear: .6s;
  position: relative; width: min(280px, 78vw); aspect-ratio: 1;
}
.stage.rare { --t-open: 1.2s; } /* レア・シークレットは光を枠色にして +0.4 秒 */
.stage .chest { position: absolute; inset: 0; width: 100%; height: 100%; overflow: visible; }
.stage .chest { animation: shake var(--t-shake) ease-in-out both, chest-fade var(--t-appear) ease-out calc(var(--t-shake) + var(--t-open)) both; }
.stage .lid {
  transform-box: fill-box; transform-origin: 0% 100%;
  animation: lid-open var(--t-open) ease-out var(--t-shake) both;
}
.stage .glow {
  position: absolute; inset: 10%; border-radius: 50%;
  background: radial-gradient(circle, var(--glow) 0%, transparent 68%);
  animation: glow var(--t-open) ease-out var(--t-shake) both;
}
.stage .appear {
  position: absolute; left: 20%; top: 12%; width: 60%;
  animation: appear var(--t-appear) ease-out calc(var(--t-shake) + var(--t-open)) both;
}
@keyframes shake {
  0%, 100% { transform: rotate(0); }
  20% { transform: rotate(-4deg); }
  40% { transform: rotate(4deg); }
  60% { transform: rotate(-3deg); }
  80% { transform: rotate(2deg); }
}
@keyframes lid-open { from { transform: none; } to { transform: translateY(-14%) rotate(-24deg); } }
@keyframes glow {
  from { opacity: 0; transform: scale(.2); }
  60% { opacity: .95; }
  to { opacity: .7; transform: scale(1.35); }
}
@keyframes chest-fade { to { opacity: .25; } }
@keyframes appear {
  from { opacity: 0; transform: scale(.3) translateY(30%); }
  to { opacity: 1; transform: none; }
}

.result { text-align: center; }
.result-img { width: min(200px, 60vw); display: block; margin: 8px auto 12px; animation: settle .3s ease-out both; }
.result h1 { margin-bottom: 8px; }
.result .flavor { margin: 0 0 8px; }
.message { font-size: 1.1rem; margin: 12px 0 4px; }
.result .stack { max-width: 320px; margin-left: auto; margin-right: auto; }
@keyframes settle { from { transform: scale(.94); } to { transform: none; } }

/* pool_complete の軽い祝福 */
.confetti { position: relative; height: 64px; margin-bottom: 8px; }
.confetti span {
  position: absolute; top: 40px; width: 10px; height: 10px; border-radius: 3px;
  animation: pop 1.1s ease-out both;
}
.confetti span:nth-child(1) { left: 30%; background: var(--accent); --x: -40px; }
.confetti span:nth-child(2) { left: 42%; background: var(--rare); --x: -12px; animation-delay: .08s; }
.confetti span:nth-child(3) { left: 50%; background: var(--secret); --x: 6px; animation-delay: .04s; }
.confetti span:nth-child(4) { left: 58%; background: var(--rare); --x: 18px; animation-delay: .12s; }
.confetti span:nth-child(5) { left: 68%; background: var(--accent); --x: 42px; animation-delay: .06s; }
@keyframes pop {
  from { opacity: 0; transform: translate(0, 0) rotate(0); }
  30% { opacity: 1; }
  to { opacity: 0; transform: translate(var(--x), -40px) rotate(160deg); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}

footer {
  margin-top: 40px; padding-top: 16px; border-top: 1px solid var(--line);
  font-size: .85rem; color: var(--ink-soft); text-align: center;
}