:root {
  --color-bg: #14121a;
  --color-panel: #1f1c28;
  --color-text: #f5f3fa;
  --color-accent: #a68cf0;
  --color-accent-soft: #4a3f66;
  --color-marico: #f08cc0;
  --color-niko: #8cbdf0;
  --color-nina: #8cf0c0;
  --color-narration: #d4cfe0;
  font-family: "Hiragino Mincho ProN", "Yu Mincho", serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  width: 100%;
  height: 100%;
  background: var(--color-bg);
  color: var(--color-text);
  overflow: hidden;
}

.screen {
  display: none;
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
}
.screen.active {
  display: flex;
}

/* ---------- タイトル画面 ---------- */
#screen-title {
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at center, #241f30 0%, #0e0c13 100%);
}
.title-wrap {
  text-align: center;
}

/* タイトルロゴ（B案：色ずれ二重化＋規則的グリッチ） */
.game-logo {
  position: relative;
  display: inline-block;
  margin: 0;
  font-family: 'Noto Serif JP', serif;
  font-size: clamp(2.6rem, 8vw, 4.6rem);
  font-weight: 700;
  letter-spacing: 0.18em;
  line-height: 1;
}
.game-logo-ghost {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  color: transparent;
  -webkit-text-stroke: 0;
}
.game-logo-ghost.cyan {
  color: #6fa8d8;
  opacity: 0.5;
  transform: translate(-2px, -2px);
}
.game-logo-ghost.magenta {
  color: #d86fa0;
  opacity: 0.45;
  transform: translate(2px, 2px);
}
.game-logo-main {
  position: relative;
  display: inline-block;
  color: var(--color-text);
  text-shadow: 0 0 24px rgba(138, 111, 216, 0.5);
  clip-path: polygon(
    0 0, 100% 0, 100% 22%, 0 22%,
    0 22%, 3px 22%, 3px 30%, 0 30%,
    0 100%, 100% 100%, 100% 30%, 3px 30%
  );
}
.game-logo-divider {
  width: min(60%, 260px);
  height: 1px;
  background: var(--color-accent);
  opacity: 0.5;
  margin: 1rem auto 0.8rem auto;
}
.game-subtitle {
  color: var(--color-narration);
  letter-spacing: 0.35em;
  margin-bottom: 3rem;
  font-family: 'Cormorant Garamond', serif;
  font-size: 0.9rem;
}

/* ---------- 名前入力画面 ---------- */
#screen-name-input {
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at center, #241f30 0%, #0e0c13 100%);
}
.name-input-wrap {
  text-align: center;
  width: min(88%, 420px);
}
.name-input-label {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.2rem;
  letter-spacing: 0.1em;
  color: var(--color-text);
  margin-bottom: 1.6rem;
}
.name-input-field {
  width: 100%;
  box-sizing: border-box;
  background: var(--color-panel);
  border: 1.5px solid var(--color-accent-soft);
  border-radius: 8px;
  color: var(--color-text);
  font-family: 'Noto Serif JP', serif;
  font-size: 1.05rem;
  padding: 0.8em 1em;
  text-align: center;
  outline: none;
  transition: border-color 0.15s ease;
}
.name-input-field:focus {
  border-color: var(--color-accent);
}
.name-input-hint {
  font-size: 0.78rem;
  color: var(--color-narration);
  opacity: 0.75;
  margin: 0.9rem 0 2rem 0;
}

.gender-select-label {
  font-family: 'Noto Serif JP', serif;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  color: var(--color-narration);
  margin: 0 0 0.8rem 0;
}
.gender-select {
  display: flex;
  gap: 0.8rem;
  margin-bottom: 2rem;
}
.gender-option {
  flex: 1;
  padding: 0.7em 0.5em;
  background: var(--color-panel);
  border: 1.5px solid var(--color-accent-soft);
  border-radius: 8px;
  color: var(--color-narration);
  font-family: 'Noto Serif JP', serif;
  font-size: 0.92rem;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: border-color 0.15s ease, color 0.15s ease, background 0.15s ease;
}
.gender-option:hover {
  border-color: var(--color-accent);
}
.gender-option.active {
  background: var(--color-accent-soft);
  border-color: var(--color-accent);
  color: var(--color-text);
}

/* ---------- 素材ロード中の待機画面 ---------- */
#screen-loading {
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse at center, #241f30 0%, #0e0c13 100%);
}
.loading-wrap {
  text-align: center;
}
.loading-spinner {
  width: 52px;
  height: 52px;
  margin: 0 auto 1.6rem auto;
  border: 3px solid var(--color-accent-soft);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: loading-spin 0.9s linear infinite;
}
@keyframes loading-spin {
  to { transform: rotate(360deg); }
}
.loading-text {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.1rem;
  letter-spacing: 0.15em;
  color: var(--color-text);
  margin-bottom: 0.8rem;
}
.loading-hint {
  font-size: 0.78rem;
  color: var(--color-narration);
  opacity: 0.7;
}

.btn-primary {
  background: var(--color-accent);
  color: #fff;
  border: none;
  padding: 0.9em 2.4em;
  font-size: 1rem;
  letter-spacing: 0.2em;
  border-radius: 999px;
  cursor: pointer;
  font-family: sans-serif;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(138, 111, 216, 0.4);
}
.btn-primary:active {
  transform: translateY(0);
}

/* ---------- ノベル画面 ---------- */
#screen-novel {
  flex-direction: column;
  justify-content: flex-end;
  cursor: pointer;
  user-select: none;
}

.bg-layer {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, #201c2b 0%, #12101a 100%);
  transition: background 0.4s ease;
  z-index: 0;
}
.bg-layer[data-bg="clubroom"] { background: linear-gradient(180deg, #2c2438 0%, #171320 100%); }
.bg-layer[data-bg="corridor"] { background: linear-gradient(180deg, #232030 0%, #0e0d15 100%); }
.bg-layer[data-bg="broadcast"] { background: linear-gradient(180deg, #1c2233 0%, #0a0c14 100%); }
.bg-layer[data-bg="library"] { background: linear-gradient(180deg, #1f2436 0%, #0c0e16 100%); }
.bg-layer[data-bg="mirror"] { background: linear-gradient(180deg, #182437 0%, #060a12 100%); }

.char-layer {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  z-index: 1;
  pointer-events: none;
}

/* 立ち絵を映す「窓」。中身（img）をscaleで拡大し、はみ出た分をここで
   クロップすることで、頭〜胸あたりだけを画面いっぱいに映すバストアップ構図にする。
   下端はフェードさせず、テキストボックスの裏にそのまま沈める。 */
.char-frame {
  width: min(42vw, 400px);
  height: 82vh;
  max-height: 760px;
  overflow: hidden;
  position: relative;
  z-index: 1;
  /* 全身画像の胸〜腰あたりが窓の下端に来るよう、窓自体を少し沈める */
  margin-bottom: -6vh;
}
.char-frame[data-shot="close"] {
  width: min(48vw, 460px);
  height: 90vh;
  max-height: 840px;
  margin-bottom: -4vh;
}

.char-sprite {
  /* 素材は元解像度が低い（実測 目安124x341px程度）ため、幅全体を
     大きく引き伸ばすとぼやけが目立つ。控えめな拡大率で頭部を
     基準に配置し、親の.char-frameでクロップしてバストアップに見せる。 */
  position: absolute;
  top: 0;
  left: 50%;
  width: 190px;
  height: auto;
  transform: translateX(-50%) scale(1.35);
  transform-origin: top center;
  filter: drop-shadow(0 10px 24px rgba(0,0,0,0.5));
  transition: transform 0.3s ease;
}
.char-frame[data-shot="close"] .char-sprite {
  transform: translateX(-50%) scale(1.7);
}

/* キャラ不在時のダミー表示（色付きシルエット） */
.char-placeholder {
  width: 100%;
  height: 140%;
  border-radius: 40px 40px 0 0;
  opacity: 0.85;
  position: absolute;
  top: 0;
  left: 0;
}
.char-placeholder.marico { background: linear-gradient(180deg, var(--color-marico), transparent 120%); }
.char-placeholder.niko { background: linear-gradient(180deg, var(--color-niko), transparent 120%); }
.char-placeholder.nina { background: linear-gradient(180deg, var(--color-nina), transparent 120%); }
.char-placeholder.mc { background: linear-gradient(180deg, #cfa96e, transparent 120%); }

.textbox {
  position: relative;
  z-index: 2;
  margin: 0 auto 4vh auto;
  width: min(90%, 860px);
  min-height: 160px;
  background: rgba(20, 18, 26, 0.92);
  border: 1px solid var(--color-accent-soft);
  border-radius: 16px;
  padding: 1.6rem 2rem 1.4rem 2rem;
  backdrop-filter: blur(6px);
}

.speaker-name {
  font-size: 1.05rem;
  color: var(--color-accent);
  letter-spacing: 0.15em;
  margin-bottom: 0.6rem;
  min-height: 1.4em;
  font-weight: bold;
}
.speaker-name[data-speaker="マリコ"] { color: var(--color-marico); }
.speaker-name[data-speaker="ニコ"] { color: var(--color-niko); }
.speaker-name[data-speaker="ニナ"] { color: var(--color-nina); }
.speaker-name[data-speaker="放送"] { color: #ff6b6b; }

.line-text {
  font-size: 1.15rem;
  line-height: 1.9;
  min-height: 3.8em;
  white-space: pre-wrap;
}

.narration .line-text {
  color: var(--color-narration);
  font-size: 1.05rem;
}

.next-indicator {
  position: absolute;
  right: 1.6rem;
  bottom: 1.2rem;
  color: var(--color-accent);
  animation: bounce 1.4s infinite;
}
@keyframes bounce {
  0%, 100% { transform: translateY(0); opacity: 0.5; }
  50% { transform: translateY(6px); opacity: 1; }
}

/* ---------- 選択肢 ---------- */
.choice-layer[hidden] {
  display: none;
}
.choice-layer {
  position: absolute;
  inset: 0;
  z-index: 3;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 1.2rem;
  background: rgba(10, 9, 14, 0.75);
}
.choice-prompt {
  font-size: 1.2rem;
  letter-spacing: 0.15em;
  margin-bottom: 1rem;
  color: var(--color-text);
}
.choice-list {
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  width: min(90%, 460px);
}
.choice-btn {
  background: var(--color-panel);
  border: 1px solid var(--color-accent-soft);
  color: var(--color-text);
  padding: 0.9em 1.4em;
  font-size: 1rem;
  border-radius: 10px;
  cursor: pointer;
  font-family: inherit;
  letter-spacing: 0.05em;
  transition: background 0.15s ease, border-color 0.15s ease;
}

/* ---------- アイテムビューア ---------- */
.item-viewer[hidden] {
  display: none;
}
.item-viewer {
  position: absolute;
  inset: 0;
  z-index: 4;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(6, 5, 9, 0.88);
}
.item-viewer-frame {
  width: min(90%, 420px);
  text-align: center;
}
.item-viewer-caption {
  font-family: 'Noto Serif JP', serif;
  font-size: 1.1rem;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin-bottom: 1rem;
}
.item-viewer-image {
  width: 100%;
  aspect-ratio: 1 / 1;
  background: #0e0c13;
  border: 1px solid var(--color-accent-soft);
  border-radius: 12px;
  overflow: hidden;
  margin-bottom: 1.2rem;
}
.item-viewer-image svg,
.item-viewer-image img {
  width: 100%;
  height: 100%;
  display: block;
}
.choice-btn:hover {
  background: var(--color-accent-soft);
  border-color: var(--color-accent);
}

/* ---------- 未実装 / エンド画面 ---------- */
#screen-notyet, #screen-end {
  align-items: center;
  justify-content: center;
  background: #0e0c13;
  text-align: center;
}
.notyet-wrap p, .end-wrap p {
  font-size: 1.2rem;
  margin-bottom: 2rem;
  line-height: 1.8;
  padding: 0 1.5rem;
  white-space: pre-wrap;
}

/* ---------- 推理クイズ画面 ---------- */
#screen-quiz {
  align-items: flex-start;
  justify-content: center;
  background: radial-gradient(ellipse at top, #201c2b 0%, #0a0912 70%);
  overflow-y: auto;
  padding: 3vh 1.5rem;
}
.quiz-wrap {
  width: min(92%, 760px);
  margin: 0 auto;
}
.quiz-header {
  text-align: center;
  margin-bottom: 1.6rem;
}
.quiz-title {
  font-size: 1.5rem;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin: 0 0 0.8rem 0;
}
.quiz-prompt {
  font-size: 1rem;
  line-height: 1.9;
  color: var(--color-narration);
  white-space: pre-wrap;
}

.quiz-cards[hidden] {
  display: none;
}
.quiz-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 0.9rem;
  margin-bottom: 1.6rem;
}
.quiz-card {
  background: var(--color-panel);
  border: 1.5px solid var(--color-accent-soft);
  border-radius: 10px;
  padding: 1rem 1.1rem;
  font-size: 0.92rem;
  line-height: 1.6;
  cursor: pointer;
  transition: border-color 0.15s ease, background 0.15s ease, transform 0.1s ease;
  user-select: none;
}
.quiz-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}
.quiz-card.selected {
  border-color: var(--color-marico);
  background: #2a1f2e;
  box-shadow: 0 0 14px rgba(240, 140, 192, 0.3);
}
.quiz-card.used {
  opacity: 0.35;
  cursor: default;
  pointer-events: none;
}

.quiz-timeline-slots {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  min-height: 3.2rem;
  margin-bottom: 1.2rem;
  padding: 0.8rem;
  background: rgba(0,0,0,0.25);
  border: 1px dashed var(--color-accent-soft);
  border-radius: 10px;
}
.quiz-slot {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--color-accent-soft);
  border-radius: 6px;
  padding: 0.4rem 0.7rem;
  font-size: 0.85rem;
  color: var(--color-text);
}
.quiz-slot .slot-num {
  font-weight: bold;
  color: var(--color-accent);
}

.btn-secondary {
  display: block;
  margin: 0 auto 1.4rem auto;
  background: transparent;
  border: 1px solid var(--color-accent-soft);
  color: var(--color-narration);
  padding: 0.5em 1.4em;
  font-size: 0.85rem;
  border-radius: 999px;
  cursor: pointer;
  font-family: sans-serif;
}
.btn-secondary:hover {
  border-color: var(--color-accent);
  color: var(--color-text);
}

#btn-quiz-submit[hidden] {
  display: none;
}
#btn-quiz-submit {
  display: block;
  margin: 0 auto;
}

.quiz-result {
  margin-top: 1.6rem;
  text-align: center;
  background: var(--color-panel);
  border: 1px solid var(--color-accent-soft);
  border-radius: 12px;
  padding: 1.6rem 1.4rem;
}
.quiz-result-verdict {
  font-size: 1.2rem;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  margin: 0 0 1rem 0;
}
.quiz-result-explain {
  font-size: 0.95rem;
  line-height: 1.9;
  color: var(--color-narration);
  white-space: pre-wrap;
  margin-bottom: 1.4rem;
}

@media (max-width: 600px) {
  .textbox { padding: 1.2rem 1.3rem; min-height: 140px; }
  .line-text { font-size: 1rem; }
  /* 縦長画面では横幅の余裕がないため、窓の幅を画面幅基準に広げる */
  .char-frame { width: min(74vw, 420px); height: 58vh; max-height: 520px; }
  .char-frame[data-shot="close"] { width: min(84vw, 460px); height: 64vh; max-height: 560px; }
  .quiz-cards { grid-template-columns: 1fr; }
}

/* ---------- 音声ミュートボタン（全画面共通） ---------- */
.mute-toggle {
  position: fixed;
  top: 0.9rem;
  right: 0.9rem;
  z-index: 100;
  width: 2.6rem;
  height: 2.6rem;
  border-radius: 50%;
  border: 1px solid var(--color-accent-soft);
  background: rgba(20, 18, 26, 0.75);
  color: var(--color-text);
  font-size: 1.1rem;
  line-height: 1;
  cursor: pointer;
  backdrop-filter: blur(4px);
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.mute-toggle:hover {
  border-color: var(--color-accent);
  transform: scale(1.05);
}
.mute-toggle[aria-pressed="true"] {
  color: var(--color-narration);
  opacity: 0.6;
}