:root {
  --bg-primary: #0a0c10;
  --bg-secondary: #121721;
  --bg-card: rgba(22, 28, 41, 0.85);
  --bg-card-hover: rgba(30, 39, 58, 0.95);
  --border-color: rgba(255, 255, 255, 0.1);
  --border-gold: rgba(212, 175, 55, 0.5);

  --text-main: #f1f2f6;
  --text-sub: #a4b0be;
  --gold-accent: #f1c40f;
  --gold-glow: rgba(241, 196, 15, 0.4);
  --danger-color: #ff4757;
  
  --font-family: 'Hiragino Kaku Gothic ProN', 'Yu Gothic', 'Segoe UI', Roboto, sans-serif;
  --transition-fast: 0.2s ease;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  background-color: var(--bg-primary);
  color: var(--text-main);
  min-height: 100vh;
  overflow-x: hidden;
}

/* Background Aura */
.bg-ambient-aura {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}
.aura-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.4;
  animation: float 10s infinite alternate ease-in-out;
}
.orb-1 { width: 400px; height: 400px; background: rgba(16, 172, 132, 0.2); top: -100px; left: -100px; }
.orb-2 { width: 300px; height: 300px; background: rgba(9, 132, 227, 0.2); bottom: 100px; right: -50px; animation-delay: -3s; }
.orb-3 { width: 250px; height: 250px; background: rgba(241, 196, 15, 0.1); bottom: -50px; left: 30%; animation-delay: -5s; }

@keyframes float {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(30px, 40px) scale(1.1); }
}

.app-container {
  width: 100%;
  max-width: 800px;
  min-height: 80vh;
  margin: 30px auto 20px auto;
  padding: 15px 20px;
  display: flex;
  flex-direction: column;
}

.app-header {
  text-align: center;
  margin-bottom: 5px;
}
.brand-badge {
  display: inline-block;
  font-size: 0.8rem;
  letter-spacing: 2px;
  color: var(--gold-accent);
  border: 1px solid var(--border-gold);
  padding: 4px 12px;
  border-radius: 20px;
  text-transform: uppercase;
}

/* Screens */
.screen {
  display: none;
  flex-direction: column;
  flex: 1;
  animation: fadeIn 0.4s ease forwards;
}
.screen.active {
  display: flex;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

/* Typography */
h1 { font-size: 2rem; margin-bottom: 5px; text-shadow: 0 0 10px var(--gold-glow); }
.subtitle { color: var(--gold-accent); font-size: 1rem; margin-bottom: 30px; }

.description-box {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  padding: 20px;
  border-radius: 12px;
  margin-bottom: 40px;
  line-height: 1.6;
}
.description-box p { margin-bottom: 10px; }
.description-box p:last-child { margin-bottom: 0; }

/* Buttons */
.btn-primary, .btn-secondary, .choice-btn {
  font-family: inherit;
  cursor: pointer;
  border-radius: 8px;
  transition: var(--transition-fast);
  outline: none;
}

.btn-primary {
  background: linear-gradient(135deg, #f39c12, #d35400);
  color: #fff;
  font-size: 1.2rem;
  font-weight: bold;
  padding: 16px 24px;
  border: none;
  box-shadow: 0 4px 15px rgba(243, 156, 18, 0.4);
  width: 100%;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(243, 156, 18, 0.6);
}

.btn-secondary {
  background: transparent;
  color: var(--text-main);
  border: 1px solid var(--border-color);
  padding: 12px 20px;
  font-size: 1rem;
  width: 100%;
  margin-bottom: 10px;
}
.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--text-main);
}

/* Quiz Screen */
.quiz-header {
  margin-bottom: 20px;
}
.quiz-progress-bar {
  width: 100%;
  height: 6px;
  background: var(--bg-card);
  border-radius: 3px;
  overflow: hidden;
  margin-bottom: 10px;
}
.progress-fill {
  height: 100%;
  background: var(--gold-accent);
  width: 0%;
  transition: width 0.3s ease;
  box-shadow: 0 0 10px var(--gold-glow);
}
.quiz-status {
  display: flex;
  justify-content: space-between;
  font-size: 0.9rem;
  color: var(--text-sub);
}

.question-container {
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  padding: 20px 15px;
  border-radius: 12px;
  margin-bottom: 20px;
  box-shadow: 0 5px 20px rgba(0,0,0,0.5);
  min-height: 100px;
  display: flex;
  align-items: center;
}
#question-text {
  font-size: 1.15rem;
  line-height: 1.5;
  width: 100%;
}

.choices-container {
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.choice-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-main);
  padding: 12px 16px;
  font-size: 1.05rem;
  text-align: left;
}
.choice-btn:hover {
  background: var(--bg-card-hover);
  border-color: var(--gold-accent);
}
.choice-btn.clicked {
  background: var(--gold-accent);
  color: #000;
  border-color: var(--gold-accent);
}

/* Result Screen */
.result-header { text-align: center; margin-bottom: 30px; }
.result-header h2 { color: var(--gold-accent); margin-bottom: 10px; font-size: 2rem; }

.result-card {
  background: var(--bg-card);
  border: 1px solid var(--border-gold);
  border-radius: 12px;
  padding: 30px 20px;
  text-align: center;
  margin-bottom: 30px;
  box-shadow: 0 10px 30px rgba(241, 196, 15, 0.15);
}
.result-stats {
  display: flex;
  justify-content: space-around;
  margin-bottom: 30px;
}
.stat-item { display: flex; flex-direction: column; }
.stat-label { font-size: 0.9rem; color: var(--text-sub); margin-bottom: 5px; }
.stat-value { font-size: 1.5rem; font-weight: bold; color: var(--text-main); }
#result-score { color: var(--gold-accent); }

.rank-container {
  border-top: 1px solid var(--border-color);
  padding-top: 20px;
}
.rank-label { color: var(--text-sub); font-size: 0.9rem; margin-bottom: 10px; }
.rank-title {
  font-size: 1.8rem;
  color: #fff;
  text-shadow: 0 0 15px rgba(255,255,255,0.5);
}

/* Rank specific classes for luxury */
.rank-triple { color: #f1c40f; text-shadow: 0 0 20px #f1c40f, 0 0 40px #f1c40f; font-size: 2.2rem; }
.rank-double { color: #e0e0e0; text-shadow: 0 0 15px #e0e0e0; }
.rank-single { color: #cd7f32; }

.share-container { margin-bottom: 40px; }
.share-x { background: #000; border-color: #333; }
.share-x:hover { background: #111; }

.retry-container { text-align: center; }
.retry-text { margin-bottom: 15px; color: var(--text-sub); font-size: 0.95rem; line-height: 1.5; }

/* 6択分の枠を確保 */
.choices-container {
  /* 5択でも6択でも高さが変わらないようにmin-heightを設定。ボタンの高さ + gap 6つ分程度 */
  min-height: 360px; 
}

/* ランク説明文 */
.rank-desc {
  margin-top: 15px;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-sub);
  padding: 0 10px;
}