:root {
  /* 深い黄昏のプラム×ネイビー。理性は保ちつつ、女性的な柔らかさを帯びた背景色 */
  --navy: #170f28;
  --navy-2: #201735;
  --navy-3: #2c2148;
  /* はっきりとした朱赤（ヴァーミリオン）を差し色に。情熱と決断力を明確に示す */
  --crimson: #9c2c17;
  --crimson-bright: #e8462a;
  --black: #0d0716;
  /* シルバーをシャンパンゴールドへ、シルバーディムをラベンダーグレーへ */
  --silver: #d9b98d;
  --silver-dim: #a99bc0;
  --white: #f5eef8;
  --font-serif: "Yu Mincho", "Hiragino Mincho ProN", "Noto Serif JP", serif;
  --font-sans: "Yu Gothic", "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
}

* { box-sizing: border-box; }

html, body {
  margin: 0;
  padding: 0;
  min-height: 100%;
  background: radial-gradient(ellipse at 50% -10%, var(--navy-3) 0%, var(--navy) 55%, var(--black) 100%);
  color: var(--white);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

.app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 32px 20px 48px;
  position: relative;
  overflow-x: hidden;
}

/* 垂直な軸 -- ぶれない意志の象徴 */
.pillar-line {
  position: absolute;
  top: 0;
  left: 50%;
  width: 1px;
  height: 100%;
  background: linear-gradient(to bottom,
    transparent 0%,
    rgba(169, 155, 192, 0.2) 12%,
    rgba(169, 155, 192, 0.2) 88%,
    transparent 100%);
  pointer-events: none;
}

.app-header {
  text-align: center;
  margin-bottom: 40px;
  color: var(--silver);
}

.mark-pendulum {
  width: 74px;
  height: auto;
  color: var(--white);
  margin-bottom: 14px;
  filter: drop-shadow(0 0 14px rgba(245, 238, 248, 0.4));
  animation: mark-breathe 6s ease-in-out infinite;
  opacity: 1;
  visibility: visible;
  transition: opacity 0.25s ease;
}

/* 決断中は上部のシンボルを隠し、中央のペンデュラムだけを見せる */
.mark-pendulum.is-hidden {
  opacity: 0;
  visibility: hidden;
}

@keyframes mark-breathe {
  0%, 100% { opacity: 0.75; transform: rotate(0deg); }
  50% { opacity: 1; transform: rotate(4deg); }
}

.app-header h1 {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  letter-spacing: 0.28em;
  margin: 0 0 6px;
  font-weight: 600;
  color: var(--white);
}

.accent-o {
  color: var(--crimson-bright);
}

/* ペンデュラムのわっかを、ZEROのOと同じ書体・字形で描く */
.pendulum-o {
  font-family: var(--font-serif);
  font-size: 30px;
  font-weight: 600;
  fill: var(--crimson-bright);
}

.pendulum-o--center {
  font-size: 64px;
}

.subtitle {
  font-size: 0.8rem;
  letter-spacing: 0.12em;
  color: var(--silver-dim);
  margin: 0;
}

#stage {
  width: 100%;
  max-width: 480px;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.screen {
  display: none;
  width: 100%;
  flex-direction: column;
  align-items: center;
  animation: fade-in 0.6s ease;
}

.screen.is-active {
  display: flex;
}

@keyframes fade-in {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== 八角形フレーム（あらゆる角度を検討し尽くした安定の器） ===== */
.octagon-frame {
  --cut: 22px;
  width: 100%;
  padding: 2px;
  background: linear-gradient(135deg, var(--silver-dim), var(--crimson-bright) 45%, var(--silver-dim));
  clip-path: polygon(
    var(--cut) 0, calc(100% - var(--cut)) 0,
    100% var(--cut), 100% calc(100% - var(--cut)),
    calc(100% - var(--cut)) 100%, var(--cut) 100%,
    0 calc(100% - var(--cut)), 0 var(--cut)
  );
}

.octagon-inner {
  background: var(--navy-2);
  clip-path: polygon(
    var(--cut) 0, calc(100% - var(--cut)) 0,
    100% var(--cut), 100% calc(100% - var(--cut)),
    calc(100% - var(--cut)) 100%, var(--cut) 100%,
    0 calc(100% - var(--cut)), 0 var(--cut)
  );
  padding: 34px 30px 24px;
}

.input-row {
  position: relative;
}

#question-input {
  width: 100%;
  resize: none;
  background: transparent;
  border: none;
  border-bottom: 1px solid rgba(169, 155, 192, 0.25);
  color: var(--white);
  font-family: var(--font-sans);
  font-size: 0.98rem;
  line-height: 1.7;
  padding: 4px 44px 12px 2px;
  outline: none;
  transition: border-color 0.3s ease;
}

#question-input::placeholder {
  color: var(--silver-dim);
}

#question-input:focus {
  border-bottom-color: var(--crimson-bright);
}

.mic-btn {
  position: absolute;
  right: 0;
  bottom: 6px;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid rgba(169, 155, 192, 0.4);
  background: transparent;
  color: var(--silver);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.25s ease;
  flex-shrink: 0;
}

.mic-btn svg { width: 17px; height: 17px; }

.mic-btn:hover {
  border-color: var(--crimson-bright);
  color: var(--crimson-bright);
}

.mic-btn.is-listening {
  background: var(--crimson-bright);
  border-color: var(--crimson-bright);
  color: var(--white);
  animation: mic-pulse 1.4s ease-in-out infinite;
}

.mic-btn:disabled {
  opacity: 0.3;
  cursor: not-allowed;
}

@keyframes mic-pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(232, 70, 42, 0.5); }
  50% { box-shadow: 0 0 0 9px rgba(232, 70, 42, 0); }
}

.mic-status {
  min-height: 16px;
  font-size: 0.72rem;
  color: var(--silver-dim);
  margin: 10px 0 0;
  letter-spacing: 0.04em;
}

/* ===== 三角形ボタン（一点に向けたベクトル） ===== */
.triangle-btn {
  margin-top: 34px;
  display: inline-flex;
  align-items: center;
  gap: 12px;
  padding: 15px 34px;
  background: linear-gradient(135deg, var(--crimson-bright), var(--crimson));
  border: none;
  border-radius: 2px;
  color: var(--white);
  font-family: var(--font-sans);
  font-size: 0.92rem;
  letter-spacing: 0.14em;
  cursor: pointer;
  box-shadow: 0 8px 24px rgba(232, 70, 42, 0.28);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.triangle-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 28px rgba(232, 70, 42, 0.4);
}

.triangle-btn:active {
  transform: translateY(0);
}

.triangle-btn.is-shake {
  animation: shake 0.4s ease;
}

@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}

.triangle-shape {
  width: 0;
  height: 0;
  border-top: 6px solid transparent;
  border-bottom: 6px solid transparent;
  border-left: 9px solid var(--white);
  flex-shrink: 0;
}

/* ===== 上部のペンデュラム（常にまっすぐ。決断中のみ非表示） ===== */
#mark-pendulum-arm {
  transform-origin: 30px 26px;
  transform: rotate(0deg);
}

/* ===== 決断中：中央でひとつだけ、ゆっくり幻想的に揺れるペンデュラム ===== */
.pendulum-center-wrap {
  width: 300px;
  max-width: 82vw;
  margin: 26px auto 20px;
}

#center-pendulum-svg { width: 100%; height: auto; overflow: visible; }

#center-pendulum-arm {
  transform-origin: 100px 35px;
  transform: rotate(0deg);
}

#center-pendulum-arm.is-swinging {
  animation: pendulum-swing 5.2s cubic-bezier(0.45, 0.05, 0.15, 0.95) forwards;
}

/* 大きく揺れながら、最後は必ず中央（0度）で静止する */
@keyframes pendulum-swing {
  0%   { transform: rotate(0deg); }
  12%  { transform: rotate(-46deg); }
  26%  { transform: rotate(36deg); }
  42%  { transform: rotate(-25deg); }
  58%  { transform: rotate(15deg); }
  74%  { transform: rotate(-8deg); }
  88%  { transform: rotate(3deg); }
  100% { transform: rotate(0deg); }
}

.thinking-text {
  text-align: center;
  color: var(--silver-dim);
  font-family: var(--font-serif);
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  margin: 8px 0 0;
  animation: thinking-flicker 2s ease-in-out infinite;
}

@keyframes thinking-flicker {
  0%, 100% { opacity: 0.55; }
  50% { opacity: 1; }
}

/* ===== 回答画面：円（マンダラ = 統合と完結） ===== */
.mandala {
  position: relative;
  width: 280px;
  height: 280px;
  max-width: 78vw;
  max-height: 78vw;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 12px auto 8px;
}

.ring {
  position: absolute;
  border-radius: 50%;
  border: 1px solid var(--silver-dim);
  opacity: 0;
  transform: scale(0.6);
}

.ring-1 { inset: 34px; animation: ring-in 0.7s 0.05s ease forwards; }
.ring-2 { inset: 16px; opacity: 0.6; animation: ring-in 0.7s 0.2s ease forwards; }
.ring-3 { inset: 0; opacity: 0.35; animation: ring-in 0.7s 0.35s ease forwards; }

@keyframes ring-in {
  to { opacity: 1; transform: scale(1); }
}

.ring-2 { animation-name: ring-in-2; }
@keyframes ring-in-2 { to { opacity: 0.6; transform: scale(1); } }
.ring-3 { animation-name: ring-in-3; }
@keyframes ring-in-3 { to { opacity: 0.35; transform: scale(1); } }

.answer-circle {
  position: relative;
  width: 208px;
  height: 208px;
  border-radius: 50%;
  background: radial-gradient(circle at 50% 35%, var(--navy-3), var(--navy-2) 70%);
  border: 1.5px solid var(--silver);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 18px;
  opacity: 0;
  transform: scale(0.7);
  animation: circle-pop 0.6s 0.45s cubic-bezier(0.2, 0.9, 0.3, 1.3) forwards;
}

@keyframes circle-pop {
  to { opacity: 1; transform: scale(1); }
}

.answer-circle.tier-yes {
  border-color: var(--crimson-bright);
  box-shadow: 0 0 40px rgba(232, 70, 42, 0.35), inset 0 0 30px rgba(232, 70, 42, 0.12);
}

.answer-circle.tier-hold {
  border-color: var(--silver-dim);
  box-shadow: 0 0 30px rgba(169, 155, 192, 0.15);
}

.answer-circle.tier-no {
  border-color: var(--silver);
  background: radial-gradient(circle at 50% 35%, #101010, var(--black) 75%);
  box-shadow: 0 0 30px rgba(0, 0, 0, 0.6), inset 0 0 24px rgba(0, 0, 0, 0.5);
}

.answer-ja {
  font-family: var(--font-serif);
  font-size: 1.18rem;
  line-height: 1.55;
  color: var(--white);
  margin: 0 0 8px;
  letter-spacing: 0.02em;
}

.answer-en {
  font-size: 0.68rem;
  color: var(--silver-dim);
  letter-spacing: 0.06em;
  margin: 0;
}

.answer-actions {
  margin-top: 34px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
}

.icon-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  border: 1px solid rgba(169, 155, 192, 0.3);
  background: transparent;
  font-size: 1.1rem;
  cursor: pointer;
  color: var(--silver);
  transition: border-color 0.25s ease, transform 0.2s ease;
}

.icon-btn:hover { border-color: var(--crimson-bright); transform: translateY(-1px); }

.key-btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 13px 26px;
  background: transparent;
  border: 1px solid var(--silver-dim);
  border-radius: 2px;
  color: var(--silver);
  font-family: var(--font-sans);
  font-size: 0.82rem;
  letter-spacing: 0.08em;
  cursor: pointer;
  transition: all 0.25s ease;
}

.key-btn:hover {
  border-color: var(--white);
  color: var(--white);
  background: rgba(169, 155, 192, 0.06);
}

.key-icon { width: 18px; height: 18px; }

.app-footer {
  margin-top: auto;
  padding-top: 40px;
}

.pillar-dot {
  display: block;
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--crimson-bright);
}

@media (max-width: 420px) {
  .app-header h1 { font-size: 1.25rem; letter-spacing: 0.2em; }
  .mark-pendulum { width: 60px; }
  .octagon-inner { padding: 28px 20px 20px; }
}