:root {
  --mist:   #E3EBE7;  /* 背景：海霧 */
  --sheet:  #F8FAF7;  /* 紙面 */
  --ink:    #15302E;  /* 墨：深い海の緑 */
  --muted:  #1e312d;
  --line:   #a9bdb6;
  --shell:  #9A7A2C;  /* 甲羅の琥珀 */
  --stamp:  #C42B2B;  /* 朱肉 */

  --mincho: "Klee One", "Yu Mincho", serif;
  --gothic: "BIZ UDGothic", system-ui, sans-serif;

  --measure: 40rem;
  --radius-sheet: 3px;
  --radius-ctl: 999px;
}

* { box-sizing: border-box; }

html { -webkit-text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--mist);
  color: var(--ink);
  font-family: var(--gothic);
  font-size: 1rem;
  line-height: 1.65;
  /* 波紋のような細い横縞 */
  background-image: repeating-linear-gradient(0deg, transparent 0 23px, rgba(21, 48, 46, .035) 23px 24px);
  overflow-x: hidden;
}

button, input, textarea { font: inherit; color: inherit; }

:focus-visible { outline: 2px solid var(--shell); outline-offset: 3px; }

/* ---------------------------------------------------- ヘッダー */
.masthead {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 2.5rem 1rem 1.25rem;
}
.logo {
  margin: 0;
  font-family: var(--mincho);
  font-weight: 900;
  font-size: clamp(2.4rem, 9vw, 3.6rem);
  line-height: 1.1;
  letter-spacing: .02em;
}
.logo-num {
  font-feature-settings: "palt";
  letter-spacing: -.02em;
}
.tagline {
  margin: .4rem .65em 0;
  font-family: var(--mincho);
  font-weight: 500;
  font-size: 1.05rem;
  color: var(--muted);
}
.rules { margin-top: 1rem; font-size: .9rem; }
.rules summary {
  cursor: pointer;
  color: var(--muted);
  width: fit-content;
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: var(--line);
}
.rules ol { margin: .6rem 0 0; padding-left: 1.6rem; }
.rules li { margin: .2rem 0; }

main {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 0 1rem 3rem;
}

/* ---------------------------------------------------- 問題 */
.case {
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: var(--radius-sheet);
  padding: 1rem 1.5rem 1.5rem;
  position: relative;
}
.case-head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
}
.case-no { margin: 0 .25em; font-size: .85rem; color: var(--muted); }
.case-title {
  margin: -.25em 0 .75rem;
  font-family: var(--mincho);
  font-weight: 700;
  font-size: 1.6rem;
  line-height: 1.35;
}
.case-text {
  margin: 0;
  font-family: var(--mincho);
  font-size: 1.1rem;
  line-height: 2;
}

.link-btn {
  background: none;
  border: 0;
  padding: .25rem 0;
  color: var(--muted);
  font-size: .85rem;
  cursor: pointer;
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: var(--line);
  white-space: nowrap;
}
.link-btn:hover { color: var(--ink); }
.link-btn[disabled] { visibility: hidden; }

/* ---------------------------------------------------- 質問ログ（5枠） */
.log { margin: 1.5rem 0 1rem; }
.qa-list { list-style: none; margin: 0; padding: 0; }
.qa {
  display: grid;
  grid-template-columns: 2.25rem 1fr auto;
  align-items: start;
  gap: .25rem .75rem;
  padding: .7rem 0;
  border-bottom: 1px solid var(--line);
}
.qa:first-child { border-top: 1px solid var(--line); }
.qa-n {
  font-family: var(--mincho);
  font-weight: 700;
  color: var(--muted);
  padding-top: .1rem;
}
.qa-q { margin: 0; overflow-wrap: anywhere; }
.qa-c { grid-column: 2 / 3; margin: 0; font-size: .85rem; color: var(--muted); }
.qa-a {
  grid-row: 1 / span 2;
  grid-column: 3;
  min-width: 4.2rem;
  text-align: center;
  font-weight: 700;
  font-size: .95rem;
  padding: .2rem .7rem;
  border-radius: var(--radius-ctl);
  border: 1.5px solid var(--ink);
}
.qa-a.yes { background: var(--ink); color: var(--sheet); }
.qa-a.no  { background: transparent; color: var(--ink); }
.qa.empty .qa-q { color: #9AAEA9; }
.qa.empty .qa-n { color: #9AAEA9; }
.qa.pending .qa-q { color: var(--ink); }
.qa.pending .qa-a { border-style: dashed; border-color: var(--muted); color: var(--muted); font-weight: 500; }
.qa.fresh .qa-a { animation: pop .35s ease-out; }
@keyframes pop { from { transform: scale(1.35); } to { transform: scale(1); } }

/* ---------------------------------------------------- 入力 */
.console { margin-top: 1.5rem; }
.phase[hidden] { display: none; }
.field-label { display: block; font-weight: 700; margin-bottom: .4rem; }
.field-label span { font-weight: 400; color: var(--muted); margin-left: .5rem; font-size: .9rem; }
.hint { margin: -.2rem 0 .6rem; font-size: .88rem; color: var(--muted); }
.field-row { display: flex; gap: .5rem; }
input[type="text"], textarea {
  width: 100%;
  background: var(--sheet);
  border: 3px solid var(--line);
  border-radius: var(--radius-sheet);
  padding: .7rem .85rem;
  line-height: 1.6;
}
input[type="text"]:focus, textarea:focus { border-color: var(--ink); outline: none; }
textarea { resize: vertical; font-size: 1.05rem; }

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .4rem;
  border-radius: var(--radius-ctl);
  padding: .65rem 1.3rem;
  font-weight: 700;
  font-size: .95rem;
  cursor: pointer;
  white-space: nowrap;
  text-decoration: none;
  border: 1.5px solid var(--ink);
}
.btn-ink { background: var(--ink); color: var(--sheet); }
.btn-ink:hover { background: #0E2422; }
.btn-ghost { background: transparent; color: var(--ink); }
.btn-ghost:hover { background: rgba(21, 48, 46, .06); }
.btn[disabled] { opacity: .45; cursor: not-allowed; }

#to-answer { margin-top: .9rem; }
.note { min-height: 1.4em; margin: .5rem 0 0; font-size: .88rem; color: var(--stamp); }
.note.calm { color: var(--muted); }

.answer-foot {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: .75rem;
  margin-top: .6rem;
  flex-wrap: wrap;
}
.answer-actions { display: flex; gap: .5rem; flex-wrap: wrap; }
.counter { font-size: .85rem; color: var(--muted); }

.working {
  display: flex;
  align-items: center;
  gap: .8rem;
  padding: 1.25rem 0;
  font-family: var(--mincho);
  font-size: 1.1rem;
}
.spinner {
  width: 1.4rem; height: 1.4rem;
  border: 2px solid var(--line);
  border-top-color: var(--ink);
  border-radius: 50%;
  animation: spin .9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ---------------------------------------------------- 結果 */
.result { margin-top: 2.5rem; }
.verdict {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
  position: relative;
}
.verdict-text {
  margin: .5em 0 0;
  font-family: var(--mincho);
  font-weight: 700;
  font-size: 1.4rem;
  text-shadow: 0 0 2px #fff, 0 0 2px #fff, 0 0 2px #fff, 0 0 2px #fff, 0 0 2px #fff, 0 0 2px #fff, 0 0 2px #fff, 0 0 2px #fff, 0 0 2px #fff;
}

.verdict-answer-heading {
  margin: 0;
  color: var(--muted);
  font-size: .85rem;
  font-weight: normal;
}

.verdict-answer {
  margin: 1rem 0 2.5rem;
  color: var(--muted);
  overflow-wrap: anywhere;
  padding: 0 1rem;
  text-shadow: 0 0 2px #fff, 0 0 2px #fff, 0 0 2px #fff, 0 0 2px #fff, 0 0 2px #fff, 0 0 2px #fff, 0 0 2px #fff, 0 0 2px #fff, 0 0 2px #fff;
}

/* 一番の見せ場：朱の「正解」印 */
.stamp {
  flex: none;
  width: 16rem;
  height: 16rem;
  border: 5px solid var(--stamp);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--stamp);
  transform: rotate(-12deg) translateY(-50%);
  box-shadow: inset 0 0 0 3px var(--sheet), inset 0 0 0 5px var(--stamp);
  background: radial-gradient(circle at 40% 35%, rgba(196, 43, 43, .05), transparent 70%);
  mix-blend-mode: multiply;
  position: absolute;
  right: -5rem;
  top: 50%;
  opacity: .75;
  z-index: -1;
}
.stamp span {
  font-family: var(--mincho);
  font-weight: 900;
  font-size: 6rem;
  letter-spacing: .05em;
  writing-mode: vertical-rl;
  line-height: 1;
}
.stamp.slam { animation: slam .55s cubic-bezier(.2, .9, .3, 1.2) both; }
@keyframes slam {
  0%   { transform: scale(2.6) rotate(-30deg); opacity: 0; translate: 0 -50%; }
  55%  { transform: scale(.92) rotate(-10deg); opacity: 1; }
  75%  { transform: scale(1.04) rotate(-13deg); }
  100% { transform: scale(1) rotate(-12deg); translate: 0 -50%; }
}
.result.shake .story { animation: thud .3s .3s ease-out; }
@keyframes thud {
  0%, 100% { transform: translateY(0); }
  40% { transform: translateY(3px); }
}

.story {
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: var(--radius-sheet);
  padding: 1.75rem 1.5rem 2rem;
}
.story-kicker { margin: 0; color: var(--muted); font-size: .85rem; }
.story-title {
  margin: .3rem 0 1.25rem;
  font-family: var(--mincho);
  font-weight: 900;
  font-size: clamp(1.6rem, 6vw, 2.2rem);
  line-height: 1.3;
}
.story-title::before { content: "『"; margin-left: -.5em; }
.story-title::after { content: "』"; }
.story-body p {
  margin: 0 0 1.1em;
  font-family: var(--mincho);
  font-size: 1.08rem;
  line-height: 2.05;
  text-align: justify;
}
.story-body p:last-child { margin-bottom: 0; }
.story-body mark {
  background: none;
  color: var(--shell);
  font-family: var(--gothic);
  font-size: .78em;
  font-weight: 700;
  white-space: nowrap;
}

.scores {
  display: grid;
  grid-template-columns: 1fr 1fr 2fr;
  margin: 1.5rem 0 0;
  border-top: 1.5px solid var(--ink);
  border-bottom: 1px solid var(--line);
}
.scores div { padding: .9rem .75rem .9rem 0; }
.scores div + div { padding-left: .75rem; border-left: 1px solid var(--line); }
.scores dt { font-size: .8rem; color: var(--muted); }
.scores dd {
  margin: .15rem 0 0;
  font-family: var(--mincho);
  font-weight: 700;
  font-size: 1.25rem;
  line-height: 1.4;
}
.stars { color: var(--shell); letter-spacing: .08em; }
.stars .off { color: var(--line); }

.recoveries, .critique { margin-top: 1.75rem; }
.recoveries h3, .critique h3 {
  margin: 0 0 .5rem;
  font-size: 1rem;
  font-weight: 700;
}
.recoveries-list { list-style: none; padding: 0; margin: 0; }
.recoveries-list li {
  display: grid;
  grid-template-columns: 2.25rem 1fr;
  gap: .75rem;
  padding: .55rem 0;
  border-bottom: 1px dotted var(--line);
  font-size: .95rem;
}
.recoveries-list .rq { font-family: var(--mincho); font-weight: 700; color: var(--shell); }
.recoveries-list .rsrc { display: block; color: var(--muted); font-size: .82rem; }
.critique p {
  margin: 0;
  padding-left: 1rem;
  border-left: 3px solid var(--shell);
  line-height: 1.95;
}

.save { margin-top: 2rem; }
.save h3 { margin: 0 0 .6rem; font-size: 1rem; font-weight: 700; }
.save-options {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: .6rem;
}
.save-opt {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: .2rem;
  text-align: left;
  padding: .85rem .9rem;
  background: var(--sheet);
  border: 1.5px solid var(--ink);
  border-radius: var(--radius-sheet);
  cursor: pointer;
}
.save-opt:hover { background: #fff; }
.save-opt[disabled] { opacity: .5; cursor: not-allowed; }
.save-opt-name { font-weight: 700; font-size: 1rem; }
.save-opt-desc { font-size: .8rem; color: var(--muted); line-height: 1.5; }

.result-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem;
  margin-top: 1.25rem;
}

/* ---------------------------------------------------- 画像プレビュー */
.preview {
  width: min(32rem, calc(100vw - 2rem));
  max-height: calc(100dvh - 2rem);
  padding: 1rem 1rem 1.25rem;
  border: 1px solid var(--line);
  border-radius: var(--radius-sheet);
  background: var(--sheet);
  color: var(--ink);
  overflow: auto;
}
.preview::backdrop { background: rgba(21, 48, 46, .55); }
.preview-head { display: flex; justify-content: space-between; align-items: baseline; }
.preview-head h2 { margin: 0 0 .75rem; font-size: 1rem; }
.preview-frame {
  display: flex;
  gap: .5rem;
  justify-content: center;
  background: var(--mist);
  border: 1px solid var(--line);
  padding: .5rem;
  overflow-x: auto;
  scroll-snap-type: x mandatory;
}
.preview-frame img,
.preview-frame video {
  display: block;
  flex: none;
  max-width: 100%;
  max-height: 62dvh;
  height: auto;
  scroll-snap-align: center;
  background: var(--mist);
}
.preview-frame.multi { justify-content: flex-start; }
.preview-frame.multi img { max-width: 78%; }
.preview-progress {
  width: 100%;
  padding: 3rem 1rem;
  text-align: center;
  font-family: var(--mincho);
}
.preview-progress progress { width: 70%; margin-top: .75rem; accent-color: var(--ink); }
.preview .hint { margin: .6rem 0 0; }
.preview-actions { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .9rem; }

.footer {
  max-width: var(--measure);
  margin: 0 auto;
  padding: 1.5rem 1rem 2.5rem;
  font-size: .8rem;
  color: var(--muted);
}
.footer a { color: inherit; text-underline-offset: 3px; text-decoration-color: var(--line); }
.footer-links { margin-top: .5rem; }
/* コピーライト：フッターの右下に、薄く小さく */
.copyright {
  margin: .75rem 0 0;
  text-align: right;
  font-size: .7rem;
  opacity: .55;
}

/* ---------------------------------------------------- 広告枠（ゲームの操作から離して置く） */
.ad-slot {
  max-width: var(--measure);
  margin: 2rem auto 0;
  padding: 1rem 1rem 0;
  border-top: 1px solid var(--line);
}
.ad-label { margin: 0 0 .4rem; font-size: .75rem; color: var(--muted); }

/* ---------------------------------------------------- アプリ内ブラウザの案内 */
.inapp-guide {
  position: fixed;
  inset: 0;
  z-index: 100;
  display: grid;
  place-items: center;
  padding: 1rem;
  background: rgba(21, 48, 46, .6);
}
.inapp-guide-card {
  width: min(26rem, 100%);
  background: var(--sheet);
  border: 1px solid var(--line);
  border-radius: var(--radius-sheet);
  padding: 1.25rem 1.25rem 1rem;
}
.inapp-guide-card h2 { margin: 0 0 .6rem; font-family: var(--mincho); font-size: 1.2rem; }
.inapp-guide-card p { margin: .4rem 0; font-size: .92rem; }
.inapp-guide-actions { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: 1rem; }
.inapp-guide-actions .btn { flex: 1; }
.inapp-guide-note { min-height: 1.2em; color: var(--muted); font-size: .85rem; }
.inapp-guide-url { width: 100%; margin-top: .4rem; font-size: .85rem; }

/* ---------------------------------------------------- プライバシーポリシー */
.logo-link { color: inherit; text-decoration: none; }
.policy h1 { font-family: var(--mincho); font-size: 1.6rem; margin: 0 0 1rem; }
.policy h2 { font-size: 1.05rem; margin: 2rem 0 .5rem; padding-bottom: .3rem; border-bottom: 1px solid var(--line); }
.policy p { margin: .5rem 0; }
.policy a { color: var(--ink); text-underline-offset: 3px; }
.policy table { width: 100%; border-collapse: collapse; font-size: .88rem; margin: .5rem 0; background: var(--sheet); }
.policy th, .policy td { border: 1px solid var(--line); padding: .5rem .6rem; text-align: left; vertical-align: top; }
.policy th { font-weight: 700; background: var(--mist); }
.policy-date { margin-top: 2rem; color: var(--muted); font-size: .88rem; }
@media (max-width: 560px) {
  .policy table { display: block; overflow-x: auto; }
}

/* ---------------------------------------------------- モバイル */
@media (max-width: 560px) {
  main { overflow-x: hidden; }
  .case, .story { padding-left: 1.1rem; padding-right: 1.1rem; }
  .field-row { flex-direction: column; }
  .field-row .btn { width: 100%; }
  #to-answer { width: 100%; }
  .scores { grid-template-columns: 1fr; }
  .scores div + div { padding-left: 0; border-left: 0; border-top: 1px solid var(--line); }
  .stamp { border-width: 4px; }
  .verdict-text { font-size: 1.25rem; }
  .answer-actions, .answer-actions .btn { width: 100%; }
  .save-options { grid-template-columns: 1fr; }
  .answer-actions .btn { flex: 1; }
}

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