/* ============================================================
   lp.css - まよている ONLINE ランディングページ
   ファンタジーカードゲーム風テーマ（ダーク + ゴールドアクセント）
   ============================================================ */

:root {
  --bg: #0a0a14;
  --bg-section: #0e0e1c;
  --bg-card: #12122a;
  --bg-card-hover: #181840;
  --gold: #c8a24e;
  --gold-dim: rgba(200, 162, 78, 0.12);
  --gold-glow: rgba(200, 162, 78, 0.5);
  --gold-bright: #e0bc68;
  --refess: #ffd700;
  --refess-dim: rgba(255, 215, 0, 0.15);
  --lawtia: #9b59b6;
  --lawtia-dim: rgba(155, 89, 182, 0.15);
  --gowen: #e74c3c;
  --gowen-dim: rgba(231, 76, 60, 0.15);
  --falkow: #3498db;
  --falkow-dim: rgba(52, 152, 219, 0.15);
  --text: #eef2f7;
  --text-secondary: #c0cad8;
  --text-muted: #7a8a9e;
  --border: #1a1a30;
  --border-glow: rgba(200, 162, 78, 0.25);
}

/* === リセット・ベース === */

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

html { scroll-behavior: smooth; }

body {
  font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  overflow-x: hidden;
}

a { color: var(--gold); text-decoration: none; transition: all 0.25s; }
a:hover { color: var(--gold-bright); }

img { max-width: 100%; height: auto; display: block; }

/* === ナビゲーション === */

.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 52px;
  padding: 0 24px;
  background: rgba(10, 10, 20, 0.88);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-glow);
  transition: background 0.3s;
}

.site-nav.scrolled {
  background: rgba(10, 10, 20, 0.95);
  border-bottom-color: rgba(200, 162, 78, 0.35);
}

.nav-home {
  font-family: 'Cinzel', serif;
  font-size: 12px;
  letter-spacing: 1px;
  color: var(--text-muted);
  padding: 6px 12px;
  border: 1px solid transparent;
  border-radius: 4px;
  transition: all 0.25s;
}
.nav-home:hover {
  color: var(--gold);
  border-color: var(--border-glow);
  background: var(--gold-dim);
}

.nav-logo {
  font-family: 'Cinzel', serif;
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 3px;
  color: var(--gold);
  text-shadow: 0 0 20px rgba(200, 162, 78, 0.3);
}

.nav-links {
  list-style: none;
  display: flex;
  gap: 4px;
}
.nav-links a {
  font-family: 'Cinzel', serif;
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--text-muted);
  padding: 6px 10px;
  border-radius: 3px;
  transition: all 0.25s;
}
.nav-links a:hover { color: var(--gold); background: var(--gold-dim); }
.nav-links a.active { color: var(--gold-bright); background: var(--gold-dim); }

/* === ヒーローセクション === */

.hero {
  position: relative;
  min-height: 100vh;
  padding-top: 52px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-video {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  z-index: 0;
}

.hero-overlay {
  position: absolute;
  top: 0; left: 0;
  width: 100%; height: 100%;
  background: linear-gradient(
    180deg,
    rgba(10, 10, 20, 0.7) 0%,
    rgba(10, 10, 20, 0.5) 40%,
    rgba(10, 10, 20, 0.5) 60%,
    rgba(10, 10, 20, 0.85) 100%
  );
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: 0 20px;
}

.hero-title {
  font-family: 'Cinzel', serif;
  font-size: 3.2rem;
  font-weight: 700;
  letter-spacing: 6px;
  color: var(--gold);
  text-shadow:
    0 0 40px rgba(200, 162, 78, 0.4),
    0 0 80px rgba(200, 162, 78, 0.2);
  margin-bottom: 4px;
}
.hero-title span {
  display: block;
  font-size: 1.1rem;
  letter-spacing: 10px;
  color: var(--text-secondary);
  text-shadow: none;
  margin-top: 4px;
}

.hero-subtitle {
  font-size: 1rem;
  color: var(--text-secondary);
  letter-spacing: 2px;
  margin-bottom: 36px;
}

.hero-btn {
  display: inline-block;
  font-family: 'Cinzel', serif;
  font-size: 16px;
  font-weight: 700;
  letter-spacing: 4px;
  color: var(--gold);
  padding: 14px 48px;
  border: 2px solid var(--gold);
  border-radius: 4px;
  background: rgba(200, 162, 78, 0.08);
  transition: all 0.3s;
}
.hero-btn:hover {
  background: var(--gold);
  color: var(--bg);
  box-shadow: 0 0 30px rgba(200, 162, 78, 0.5), 0 0 60px rgba(200, 162, 78, 0.2);
}

.hero-fullscreen {
  display: block;
  margin-top: 16px;
  font-size: 12px;
  color: var(--text-muted);
  letter-spacing: 1px;
}
.hero-fullscreen:hover { color: var(--gold); }

.scroll-hint {
  position: absolute;
  bottom: 28px;
  z-index: 2;
  text-align: center;
  animation: float 2.5s ease-in-out infinite;
}
.scroll-hint-text {
  display: block;
  font-family: 'Cinzel', serif;
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 2px;
  margin-bottom: 6px;
}
.scroll-hint-arrow {
  width: 12px; height: 12px;
  margin: 0 auto;
  border-right: 2px solid var(--gold);
  border-bottom: 2px solid var(--gold);
  transform: rotate(45deg);
  opacity: 0.6;
}

@keyframes float {
  0%, 100% { transform: translateY(0); opacity: 0.8; }
  50% { transform: translateY(10px); opacity: 1; }
}

/* === セクション共通 === */

.lp-section {
  max-width: 1040px;
  margin: 0 auto;
  padding: 90px 28px;
}

.section-alt { background: var(--bg-section); }

.section-divider {
  display: flex;
  align-items: center;
  gap: 20px;
  margin-bottom: 48px;
}
.section-divider::before,
.section-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border-glow), transparent);
}
.section-label {
  font-family: 'Cinzel', serif;
  font-size: 11px;
  letter-spacing: 4px;
  color: var(--gold);
  white-space: nowrap;
}

.section-title {
  font-family: 'Cinzel', serif;
  font-size: 1.6rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text);
  text-align: center;
  margin-bottom: 12px;
}

.section-desc {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 40px;
  line-height: 1.8;
}

/* === About（3カードグリッド） === */

.about-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.about-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 32px 24px;
  text-align: center;
  transition: all 0.3s;
}
.about-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 3px;
  background: linear-gradient(90deg, transparent, var(--gold), transparent);
  border-radius: 6px 6px 0 0;
  opacity: 0;
  transition: opacity 0.3s;
}
.about-card:hover {
  border-color: var(--border-glow);
  background: var(--bg-card-hover);
  box-shadow: 0 4px 20px rgba(200, 162, 78, 0.08);
}
.about-card:hover::before { opacity: 1; }

.about-card-icon {
  font-size: 2rem;
  margin-bottom: 16px;
}

.about-card h3 {
  font-family: 'Cinzel', serif;
  font-size: 1rem;
  letter-spacing: 1px;
  color: var(--gold);
  margin-bottom: 10px;
}

.about-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* === How to Play（3ステップ） === */

.step-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.step-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 28px 24px;
  transition: all 0.3s;
}
.step-card:hover {
  border-color: var(--border-glow);
  box-shadow: 0 4px 20px rgba(200, 162, 78, 0.08);
}

.step-number {
  font-family: 'Cinzel', serif;
  font-size: 2rem;
  font-weight: 700;
  color: var(--gold);
  opacity: 0.5;
  margin-bottom: 12px;
}

.step-card h3 {
  font-size: 1rem;
  color: var(--text);
  margin-bottom: 10px;
}

.step-card p {
  font-size: 0.85rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* === Elements（4列属性カード） === */

.element-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.element-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 24px 16px;
  text-align: center;
  transition: all 0.3s;
}
.element-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

/* 属性ごとのアクセントカラー */
.element-card[data-element="refess"] { border-color: rgba(255, 215, 0, 0.3); }
.element-card[data-element="refess"]:hover {
  border-color: var(--refess);
  box-shadow: 0 0 20px var(--refess-dim), 0 8px 24px rgba(0, 0, 0, 0.3);
}
.element-card[data-element="lawtia"] { border-color: rgba(155, 89, 182, 0.3); }
.element-card[data-element="lawtia"]:hover {
  border-color: var(--lawtia);
  box-shadow: 0 0 20px var(--lawtia-dim), 0 8px 24px rgba(0, 0, 0, 0.3);
}
.element-card[data-element="gowen"] { border-color: rgba(231, 76, 60, 0.3); }
.element-card[data-element="gowen"]:hover {
  border-color: var(--gowen);
  box-shadow: 0 0 20px var(--gowen-dim), 0 8px 24px rgba(0, 0, 0, 0.3);
}
.element-card[data-element="falkow"] { border-color: rgba(52, 152, 219, 0.3); }
.element-card[data-element="falkow"]:hover {
  border-color: var(--falkow);
  box-shadow: 0 0 20px var(--falkow-dim), 0 8px 24px rgba(0, 0, 0, 0.3);
}

.element-frame {
  width: 120px;
  height: auto;
  margin: 0 auto 16px;
  filter: drop-shadow(0 0 8px rgba(200, 162, 78, 0.3));
}

.element-card h3 {
  font-family: 'Cinzel', serif;
  font-size: 1rem;
  letter-spacing: 2px;
  margin-bottom: 8px;
}
.element-card[data-element="refess"] h3 { color: var(--refess); }
.element-card[data-element="lawtia"] h3 { color: var(--lawtia); }
.element-card[data-element="gowen"] h3 { color: var(--gowen); }
.element-card[data-element="falkow"] h3 { color: var(--falkow); }

.element-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

/* === Cards セクション === */

.card-types {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}

.card-type {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 20px;
  text-align: center;
}
.card-type h4 {
  font-family: 'Cinzel', serif;
  font-size: 0.9rem;
  color: var(--gold);
  margin-bottom: 8px;
}
.card-type p {
  font-size: 0.8rem;
  color: var(--text-secondary);
}

.stats-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  margin-bottom: 40px;
}
.stat-badge {
  font-family: 'Cinzel', serif;
  font-size: 0.75rem;
  letter-spacing: 1px;
  color: var(--gold);
  padding: 6px 14px;
  border: 1px solid var(--border-glow);
  border-radius: 20px;
  background: var(--gold-dim);
}

.featured-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}

.featured-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  transition: all 0.3s;
  cursor: default;
}
.featured-card:hover {
  transform: translateY(-4px);
  border-color: var(--border-glow);
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
}

.featured-card img {
  width: 100%;
  aspect-ratio: 3 / 4;
  object-fit: cover;
  border-bottom: 1px solid var(--border);
}

.featured-card-info {
  padding: 10px 12px;
}
.featured-card-name {
  display: block;
  font-size: 0.82rem;
  color: var(--text);
  margin-bottom: 4px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.featured-card-stats {
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 0.5px;
}

/* 属性別カードボーダー */
.featured-card[data-element="refess"] { border-color: rgba(255, 215, 0, 0.25); }
.featured-card[data-element="lawtia"] { border-color: rgba(155, 89, 182, 0.25); }
.featured-card[data-element="gowen"] { border-color: rgba(231, 76, 60, 0.25); }
.featured-card[data-element="falkow"] { border-color: rgba(52, 152, 219, 0.25); }

.cards-cta {
  text-align: center;
  margin-top: 32px;
}
.cards-cta a {
  font-size: 0.85rem;
  color: var(--gold);
  letter-spacing: 1px;
}
.cards-cta a:hover { text-decoration: underline; }

/* === Battle System セクション === */

.battle-phases {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
  margin-bottom: 40px;
}

.phase-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 24px 20px;
  text-align: center;
  transition: all 0.3s;
}
.phase-card:hover {
  border-color: var(--border-glow);
  box-shadow: 0 4px 16px rgba(200, 162, 78, 0.08);
}

.phase-label {
  font-family: 'Cinzel', serif;
  font-size: 0.7rem;
  letter-spacing: 3px;
  color: var(--gold);
  opacity: 0.6;
  margin-bottom: 8px;
}

.phase-card h4 {
  font-size: 1rem;
  color: var(--text);
  margin-bottom: 8px;
}

.phase-card p {
  font-size: 0.8rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.battle-info {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.battle-info-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 24px;
}

.battle-info-card h4 {
  font-family: 'Cinzel', serif;
  font-size: 0.9rem;
  color: var(--gold);
  margin-bottom: 10px;
  letter-spacing: 1px;
}

.battle-info-card p {
  font-size: 0.82rem;
  color: var(--text-secondary);
  line-height: 1.8;
}

/* フィールド図（3x3グリッド） */
.field-diagram {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 4px;
  max-width: 180px;
  margin: 12px auto 0;
}
.field-cell {
  aspect-ratio: 1;
  background: rgba(200, 162, 78, 0.08);
  border: 1px solid var(--border-glow);
  border-radius: 3px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.6rem;
  color: var(--text-muted);
}

/* 時間帯サイクル */
.time-cycle {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 12px;
}
.time-badge {
  font-size: 0.72rem;
  padding: 4px 12px;
  border-radius: 12px;
  border: 1px solid var(--border);
}
.time-badge.noon { color: #ffd700; border-color: rgba(255, 215, 0, 0.3); background: rgba(255, 215, 0, 0.08); }
.time-badge.evening { color: #ff8c42; border-color: rgba(255, 140, 66, 0.3); background: rgba(255, 140, 66, 0.08); }
.time-badge.night { color: #7a8aff; border-color: rgba(122, 138, 255, 0.3); background: rgba(122, 138, 255, 0.08); }

.battle-cta {
  text-align: center;
  margin-top: 32px;
}
.battle-cta a {
  font-size: 0.85rem;
  color: var(--gold);
  letter-spacing: 1px;
}
.battle-cta a:hover { text-decoration: underline; }

/* === フッター === */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 52px 28px;
  text-align: center;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 32px;
  margin-bottom: 20px;
}
.footer-links a {
  font-family: 'Cinzel', serif;
  font-size: 0.8rem;
  letter-spacing: 2px;
  color: var(--text-muted);
  padding: 6px 12px;
  border: 1px solid transparent;
  border-radius: 4px;
  transition: all 0.25s;
}
.footer-links a:hover {
  color: var(--gold);
  border-color: var(--border-glow);
  background: var(--gold-dim);
}

.footer-copy {
  font-family: 'Cinzel', serif;
  font-size: 0.72rem;
  color: var(--text-muted);
  letter-spacing: 1px;
}

/* === スクロールトップボタン === */

.scroll-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 999;
  width: 40px;
  height: 40px;
  background: rgba(10, 10, 20, 0.9);
  border: 1px solid var(--border-glow);
  border-radius: 50%;
  color: var(--gold);
  font-size: 18px;
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s;
  display: flex;
  align-items: center;
  justify-content: center;
}
.scroll-top.visible {
  opacity: 1;
  pointer-events: auto;
}
.scroll-top:hover {
  background: var(--gold);
  color: var(--bg);
  box-shadow: 0 0 16px rgba(200, 162, 78, 0.4);
}

/* === レスポンシブ === */

@media (max-width: 900px) {
  .element-grid { grid-template-columns: repeat(2, 1fr); }
  .featured-cards { grid-template-columns: repeat(2, 1fr); }
  .battle-info { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .site-nav { padding: 0 14px; height: 48px; }
  .nav-logo { font-size: 12px; letter-spacing: 1.5px; }
  .nav-links { display: none; }
  .hero { padding-top: 48px; }
  .hero-title { font-size: 2rem; letter-spacing: 3px; }
  .hero-title span { font-size: 0.9rem; letter-spacing: 6px; }
  .hero-subtitle { font-size: 0.85rem; }
  .hero-btn { font-size: 14px; padding: 12px 36px; }

  .lp-section { padding: 56px 16px; }
  .section-title { font-size: 1.25rem; }

  .about-grid { grid-template-columns: 1fr; }
  .step-grid { grid-template-columns: 1fr; }
  .element-grid { grid-template-columns: repeat(2, 1fr); }
  .card-types { grid-template-columns: 1fr; }
  .featured-cards { grid-template-columns: repeat(2, 1fr); }
  .battle-phases { grid-template-columns: 1fr; }

  .footer-links { flex-direction: column; gap: 12px; }
}