/* ========== Reset / Base ========== */
:root {
  --color-orange: #F97316;
  --color-orange-light: #FB923C;
  --color-bg: #0F172A;
  --color-bg-card: #1E293B;
  --color-text: #F1F5F9;
  --color-text-dim: #94A3B8;
  --color-correct: #10B981;
  --color-wrong: #EF4444;
  --color-border: #334155;
  --radius: 12px;
  --shadow: 0 8px 24px rgba(0,0,0,0.3);
}

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

html, body {
  font-family: -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Noto Sans JP", sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  font-feature-settings: "palt";
}

a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

/* ========== Top Page ========== */
.page-top { display: flex; flex-direction: column; min-height: 100vh; }
.site-header { padding: 64px 24px 32px; text-align: center; }
.logo { font-size: 32px; color: var(--color-orange); }
.subtitle { font-size: 14px; color: var(--color-text-dim); margin-top: 8px; }

.app-select { flex: 1; padding: 32px 24px; max-width: 960px; margin: 0 auto; width: 100%; }
.select-wrap { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 24px; }

.app-card {
  display: block;
  background: var(--color-bg-card);
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: 40px 32px;
  text-align: center;
  transition: transform 0.2s, border-color 0.2s;
  position: relative;
}
.app-card:hover { transform: translateY(-4px); border-color: var(--color-orange); }
.app-card--coming { opacity: 0.5; pointer-events: none; }
.app-card--coming::after {
  content: "近日公開";
  position: absolute; top: 12px; right: 12px;
  font-size: 10px; padding: 4px 8px;
  background: var(--color-text-dim); color: var(--color-bg);
  border-radius: 4px;
}
.app-card__badge {
  display: inline-block;
  width: 60px; height: 60px;
  background: var(--color-orange);
  color: var(--color-bg);
  font-size: 28px; font-weight: bold;
  line-height: 60px; border-radius: 12px;
  margin-bottom: 16px;
}
.app-card__title { display: block; font-size: 20px; margin-bottom: 8px; }
.app-card__desc { display: block; font-size: 14px; color: var(--color-text-dim); }
.device-notice { text-align: center; margin-top: 32px; color: var(--color-text-dim); font-size: 13px; }

.site-footer { padding: 32px 24px; text-align: center; border-top: 1px solid var(--color-border); }
.legal { font-size: 12px; color: var(--color-text-dim); margin-bottom: 8px; }
.footer-nav { margin-top: 16px; display: flex; gap: 16px; justify-content: center; }
.footer-nav a { font-size: 12px; color: var(--color-text-dim); }

/* ========== Quiz Page ========== */
.page-quiz { display: flex; flex-direction: column; min-height: 100vh; }

.quiz-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 24px; border-bottom: 1px solid var(--color-border);
}
.back-link { font-size: 14px; color: var(--color-text-dim); }
.quiz-title { font-size: 18px; color: var(--color-orange); }
.mute-btn { background: none; border: none; color: var(--color-text); font-size: 20px; }

.view { padding: 32px 24px; max-width: 720px; margin: 0 auto; width: 100%; }
[hidden] { display: none !important; }

/* Home */
.home-card { background: var(--color-bg-card); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow); }
.home-card h2 { color: var(--color-orange); margin-bottom: 16px; }
.rules { list-style: disc; padding-left: 24px; margin-bottom: 24px; line-height: 1.8; }
.settings { margin-bottom: 24px; }
.settings fieldset { border: 1px solid var(--color-border); border-radius: 8px; padding: 12px 16px; }
.settings legend { padding: 0 8px; font-size: 13px; color: var(--color-text-dim); }
.settings label { margin-right: 16px; cursor: pointer; }
.turnstile-wrap { margin: 16px 0; }

.btn {
  display: inline-block; padding: 14px 32px;
  border: none; border-radius: 999px;
  font-size: 16px; font-weight: bold;
  text-align: center; transition: opacity 0.2s, transform 0.1s;
}
.btn:hover { opacity: 0.9; }
.btn:active { transform: scale(0.97); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn--primary { background: var(--color-orange); color: #fff; }
.btn--ghost { background: transparent; border: 1px solid var(--color-border); color: var(--color-text); }
.btn--share { background: #000; color: #fff; }
.btn--start { width: 100%; padding: 18px; font-size: 18px; }

.ranking-preview { margin-top: 32px; }
.ranking-preview h3 { font-size: 14px; color: var(--color-text-dim); margin-bottom: 12px; }
.ranking-list { list-style: none; padding: 0; }
.ranking-list li {
  display: flex; justify-content: space-between;
  padding: 8px 0; border-bottom: 1px solid var(--color-border);
  font-size: 14px;
}

/* Countdown */
.view--countdown { display: flex; align-items: center; justify-content: center; min-height: 60vh; }
.countdown-num {
  font-size: 200px; font-weight: bold; color: var(--color-orange);
  animation: pulse 1s ease-out;
}
@keyframes pulse {
  0% { transform: scale(1.5); opacity: 0; }
  50% { transform: scale(1.1); opacity: 1; }
  100% { transform: scale(1); opacity: 1; }
}

/* Play */
.hud { display: flex; justify-content: space-around; margin-bottom: 32px; padding: 16px; background: var(--color-bg-card); border-radius: var(--radius); }
.hud-item { font-size: 14px; color: var(--color-text-dim); }
.hud-item span { color: var(--color-orange); font-size: 20px; font-weight: bold; margin-left: 8px; }

.question-card { background: var(--color-bg-card); border-radius: var(--radius); padding: 48px 32px; text-align: center; box-shadow: var(--shadow); }
.question-category { font-size: 13px; color: var(--color-text-dim); margin-bottom: 16px; }
.question-label { font-size: 36px; font-weight: bold; margin-bottom: 32px; }
.question-keys { font-size: 18px; color: var(--color-orange); min-height: 32px; font-family: ui-monospace, "SF Mono", monospace; }

.result-flash { text-align: center; margin-top: 24px; font-size: 24px; height: 32px; transition: color 0.2s; }
.result-flash.is-correct { color: var(--color-correct); }
.result-flash.is-wrong { color: var(--color-wrong); }

/* Result */
.result-card { background: var(--color-bg-card); border-radius: var(--radius); padding: 32px; box-shadow: var(--shadow); text-align: center; }
.result-card h2 { color: var(--color-orange); margin-bottom: 24px; }
.score-display { padding: 32px 0; }
.score-value { font-size: 80px; font-weight: bold; color: var(--color-orange); line-height: 1; }
.score-label { font-size: 14px; color: var(--color-text-dim); letter-spacing: 4px; margin-top: 8px; }
.score-detail { display: flex; justify-content: space-around; padding: 16px 0; border-top: 1px solid var(--color-border); border-bottom: 1px solid var(--color-border); margin-bottom: 24px; }
.rank-form { margin-bottom: 24px; }
.rank-form label { display: block; margin-bottom: 12px; font-size: 14px; color: var(--color-text-dim); }
.rank-form input {
  display: block; width: 100%;
  padding: 12px; margin-top: 8px;
  background: var(--color-bg); color: var(--color-text);
  border: 1px solid var(--color-border); border-radius: 8px;
  font-size: 16px;
}
.result-actions { display: flex; gap: 12px; justify-content: center; margin-bottom: 16px; }
.share-wrap { margin-top: 16px; }

/* Coming soon */
.page-coming { display: flex; align-items: center; justify-content: center; min-height: 100vh; padding: 24px; }
.coming-soon { text-align: center; max-width: 480px; }
.coming-soon h1 { font-size: 28px; color: var(--color-orange); margin-bottom: 16px; }
.coming-soon p { margin-bottom: 12px; color: var(--color-text-dim); }
.coming-soon a { color: var(--color-orange); }