/* ことばで.ai */
:root {
  --bg: #faf7f2;
  --card: #ffffff;
  --ink: #2b2a33;
  --sub: #8a8794;
  --line: #e8e2d8;
  --accent: #e86a33;
  --accent-ink: #fff;
  --indigo: #3a3e8c;
  --ok: #34a06b;
  --ng: #d64545;
  --shadow: 0 2px 12px rgba(43, 42, 51, .07);
}
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #17171f;
    --card: #22222d;
    --ink: #f0eee9;
    --sub: #9b98a8;
    --line: #34323f;
    --accent: #ff8a52;
    --indigo: #8b90e8;
    --shadow: 0 2px 12px rgba(0, 0, 0, .35);
  }
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: "Hiragino Kaku Gothic ProN", "Hiragino Sans", "Noto Sans JP", "Yu Gothic", "Meiryo", sans-serif;
  line-height: 1.6;
}

/* ---------- header ---------- */
.site-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 560px;
  margin: 0 auto;
  padding: 14px 16px 8px;
}
.brand { font-size: 1.45rem; margin: 0; letter-spacing: .04em; font-weight: 800; }
.brand-ai { color: var(--accent); font-weight: 800; }
.icon-btn {
  width: 38px; height: 38px;
  border-radius: 50%;
  border: 1.5px solid var(--line);
  background: var(--card);
  color: var(--ink);
  font-size: 1rem;
  cursor: pointer;
}
.icon-btn:hover { border-color: var(--accent); }

/* ---------- main ---------- */
main { max-width: 560px; margin: 0 auto; padding: 4px 16px 32px; }
.day-line { text-align: center; color: var(--sub); font-size: .9rem; }
.day-line #dayNo { font-weight: 700; color: var(--ink); }
.streak-badge { margin-left: .5em; font-weight: 700; color: var(--accent); }
.lead { text-align: center; font-size: .9rem; color: var(--sub); margin: .4em 0 1em; }

/* progress dots */
.dots { display: flex; justify-content: center; gap: 10px; margin-bottom: 14px; }
.dot {
  width: 14px; height: 14px;
  border-radius: 4px;
  background: var(--line);
  transition: background .25s, transform .25s;
}
.dot.now { outline: 2px solid var(--accent); outline-offset: 2px; }
.dot.wrong { background: var(--ng); }
.dot.pass { background: #555; }
.dot.win { background: var(--ok); transform: scale(1.15); }

/* hints */
.hints { list-style: none; margin: 0 0 14px; padding: 0; display: grid; gap: 10px; }
.hint-card {
  background: var(--card);
  border: 1.5px solid var(--line);
  border-radius: 14px;
  padding: 12px 14px;
  box-shadow: var(--shadow);
  animation: slideIn .35s ease;
}
.hint-card .hint-label {
  font-size: .72rem;
  font-weight: 700;
  color: var(--accent);
  letter-spacing: .08em;
  display: block;
}
.hint-card.latest { border-color: var(--accent); }
@keyframes slideIn { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; } }

/* guessed chips */
.guessed { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 10px; min-height: 0; }
.chip {
  background: var(--card);
  border: 1.5px solid var(--ng);
  color: var(--ng);
  border-radius: 999px;
  font-size: .85rem;
  padding: 2px 12px;
}
.chip.pass { border-color: var(--sub); color: var(--sub); }

/* input */
#guessForm { display: flex; gap: 8px; }
#guessInput {
  flex: 1;
  font-size: 1.05rem;
  padding: 12px 14px;
  border-radius: 12px;
  border: 1.5px solid var(--line);
  background: var(--card);
  color: var(--ink);
  min-width: 0;
}
#guessInput:focus { outline: 2px solid var(--accent); border-color: transparent; }
#guessInput.shake { animation: shake .4s; }
@keyframes shake {
  0%,100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}
#guessBtn {
  font-size: 1rem;
  font-weight: 700;
  padding: 0 20px;
  border-radius: 12px;
  border: none;
  background: var(--accent);
  color: var(--accent-ink);
  cursor: pointer;
}
#guessBtn:disabled { opacity: .4; cursor: default; }
.pass-btn {
  display: block;
  margin: 12px auto 0;
  background: none;
  border: none;
  color: var(--sub);
  font-size: .88rem;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 3px;
}
.pass-btn:hover { color: var(--accent); }

.notice {
  text-align: center;
  background: var(--card);
  border: 1.5px solid var(--line);
  border-radius: 14px;
  padding: 20px;
  margin-top: 16px;
}

/* ---------- modals ---------- */
.modal {
  border: none;
  border-radius: 18px;
  padding: 24px 22px;
  max-width: 420px;
  width: calc(100vw - 40px);
  background: var(--card);
  color: var(--ink);
  box-shadow: 0 10px 40px rgba(0,0,0,.25);
}
.modal::backdrop { background: rgba(20, 18, 28, .55); }
.modal h2 { margin: 0 0 12px; text-align: center; }
.help-list { padding-left: 1.3em; margin: 0 0 12px; }
.help-list li { margin-bottom: .4em; }
.share-sample {
  background: var(--bg);
  border-radius: 10px;
  padding: 10px 14px;
  font-size: .9rem;
  margin-bottom: 16px;
}
.close-btn { display: block; margin: 0 auto; }
.primary {
  background: var(--accent);
  border: none;
  color: var(--accent-ink);
  font-size: 1rem;
  font-weight: 700;
  border-radius: 12px;
  padding: 10px 28px;
  cursor: pointer;
}
.subtle { background: none; border: none; color: var(--sub); cursor: pointer; margin-top: 10px; text-decoration: underline; }

/* stats */
.stats-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 6px; text-align: center; margin-bottom: 14px; }
.stats-grid b { display: block; font-size: 1.5rem; }
.stats-grid span { font-size: .72rem; color: var(--sub); }
.modal h3 { font-size: .85rem; margin: 0 0 8px; color: var(--sub); }
.dist { display: grid; gap: 5px; margin-bottom: 16px; }
.dist-row { display: flex; align-items: center; gap: 8px; font-size: .85rem; }
.dist-bar {
  background: var(--accent);
  color: var(--accent-ink);
  border-radius: 6px;
  padding: 1px 8px;
  min-width: 1.4em;
  text-align: right;
  font-weight: 700;
}

/* result */
.result-emoji { text-align: center; font-size: 2.6rem; line-height: 1; }
.answer-reveal { text-align: center; font-size: 1.05rem; margin: .3em 0; }
.answer-reveal b { font-size: 1.5rem; color: var(--indigo); }
.result-sub { text-align: center; color: var(--sub); font-size: .9rem; margin-top: 0; }
.share-grid {
  text-align: center;
  font-size: 1.5rem;
  letter-spacing: 2px;
  background: var(--bg);
  border-radius: 12px;
  padding: 8px;
  margin: 10px 0 14px;
}
.share-btns { display: grid; gap: 8px; }
.share-btns button {
  font-size: 1rem;
  font-weight: 700;
  border: none;
  border-radius: 12px;
  padding: 12px;
  cursor: pointer;
  color: #fff;
}
.share-x { background: #000; }
.share-line { background: #06c755; }
.share-copy { background: var(--indigo); }
.countdown { text-align: center; color: var(--sub); font-size: .9rem; margin: 14px 0 0; }
.countdown b { color: var(--ink); font-variant-numeric: tabular-nums; }

/* ads */
.ad-slot { margin: 22px auto 0; min-height: 50px; max-width: 560px; text-align: center; }

/* ---------- footer ---------- */
.site-foot { text-align: center; padding: 18px 16px 34px; color: var(--sub); font-size: .8rem; }
.site-foot nav { display: flex; justify-content: center; gap: 18px; margin-bottom: 6px; }
.site-foot a { color: var(--sub); }
.copy { margin: 0; }

/* static pages */
.page { max-width: 620px; margin: 0 auto; padding: 8px 18px 40px; }
.page h2 { margin-top: 1.6em; font-size: 1.15rem; }
.page a { color: var(--accent); }
.back-link { display: inline-block; margin-top: 24px; }