/* ===========================
   リセット & ベース
=========================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --color-primary: #b8a9d9;
  --color-primary-dark: #7c6aaa;
  --color-primary-light: #e8e0f5;
  --color-accent: #f0a0b8;
  --color-accent-dark: #d4607a;
  --color-gold: #c9a84c;
  --color-bg: #faf8fd;
  --color-bg-alt: #f0edf8;
  --color-text: #2c2440;
  --color-text-light: #6b5f8a;
  --color-border: #d8d0ec;
  --color-white: #ffffff;
  --font-sans: 'Noto Sans JP', sans-serif;
  --font-serif: 'Noto Serif JP', serif;
  --shadow-sm: 0 2px 8px rgba(100, 80, 160, 0.10);
  --shadow-md: 0 4px 20px rgba(100, 80, 160, 0.15);
  --shadow-lg: 0 8px 40px rgba(100, 80, 160, 0.20);
  --radius: 12px;
  --radius-sm: 6px;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.8;
}

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

a {
  color: var(--color-primary-dark);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

/* ===========================
   ヘッダー
=========================== */
.site-header {
  background: linear-gradient(135deg, #2c2440 0%, #4a3870 50%, #6b4e9e 100%);
  color: var(--color-white);
  padding: 0;
  position: relative;
  overflow: hidden;
}

.site-header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.03'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
  pointer-events: none;
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 16px 24px 32px;
  position: relative;
  z-index: 1;
}

.back-link-wrap {
  margin-bottom: 16px;
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  color: rgba(255,255,255,0.75);
  font-size: 0.85rem;
  padding: 6px 14px;
  border: 1px solid rgba(255,255,255,0.25);
  border-radius: 20px;
  transition: all 0.2s;
}

.back-link:hover {
  color: #fff;
  background: rgba(255,255,255,0.12);
  text-decoration: none;
  border-color: rgba(255,255,255,0.5);
}

.header-title-wrap {
  text-align: center;
}

.header-subtitle {
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  color: var(--color-primary);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.header-title {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 4vw, 2.4rem);
  font-weight: 700;
  line-height: 1.4;
  color: #fff;
  text-shadow: 0 2px 12px rgba(0,0,0,0.4);
  margin-bottom: 8px;
}

.header-en {
  font-size: 0.85rem;
  color: rgba(255,255,255,0.6);
  letter-spacing: 0.05em;
  font-style: italic;
}

/* ===========================
   ナビゲーション
=========================== */
.main-nav {
  background: var(--color-primary-dark);
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-md);
}

.main-nav ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 16px;
}

.main-nav li a {
  display: block;
  padding: 12px 14px;
  color: rgba(255,255,255,0.85);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  transition: color 0.2s, background 0.2s;
}

.main-nav li a:hover {
  color: #fff;
  background: rgba(255,255,255,0.1);
  text-decoration: none;
}

/* ===========================
   ヒーローセクション
=========================== */
.hero {
  background: linear-gradient(160deg, #1e1830 0%, #3a2860 60%, #5a3d8a 100%);
  padding: 48px 24px;
  position: relative;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 70% 50%, rgba(184,169,217,0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero-content {
  max-width: 1100px;
  margin: 0 auto;
  display: flex;
  gap: 40px;
  align-items: center;
  position: relative;
  z-index: 1;
}

.hero-images {
  flex: 0 0 auto;
  display: flex;
  gap: 12px;
  align-items: flex-end;
}

.hero-img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-lg);
}

.hero-img--main {
  width: 180px;
  border: 2px solid rgba(255,255,255,0.2);
}

.hero-img--sub {
  width: 130px;
  opacity: 0.85;
  border: 2px solid rgba(255,255,255,0.15);
}

.hero-info {
  flex: 1;
  color: #fff;
}

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 20px;
}

.badge {
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.78rem;
  font-weight: 500;
  letter-spacing: 0.05em;
}

.badge--genre {
  background: rgba(184,169,217,0.3);
  border: 1px solid rgba(184,169,217,0.5);
  color: #e8e0f5;
}

.badge--season {
  background: rgba(201,168,76,0.25);
  border: 1px solid rgba(201,168,76,0.5);
  color: #f0d080;
}

.hero-meta {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.hero-meta-item {
  display: flex;
  gap: 12px;
  align-items: baseline;
}

.meta-label {
  font-size: 0.75rem;
  color: var(--color-primary);
  min-width: 80px;
  font-weight: 500;
  letter-spacing: 0.05em;
}

.meta-value {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.9);
}

/* ===========================
   セクション共通
=========================== */
.section {
  padding: 72px 24px;
}

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

.section-inner {
  max-width: 1100px;
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.4rem, 3vw, 2rem);
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 40px;
  padding-bottom: 12px;
  border-bottom: 3px solid var(--color-primary);
  position: relative;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -3px;
  left: 0;
  width: 60px;
  height: 3px;
  background: var(--color-accent-dark);
}

.subsection-title {
  font-family: var(--font-serif);
  font-size: 1.2rem;
  color: var(--color-primary-dark);
  margin: 40px 0 20px;
  padding-left: 12px;
  border-left: 4px solid var(--color-primary);
}

/* ===========================
   作品概要
=========================== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin-bottom: 40px;
}

.about-text p {
  margin-bottom: 16px;
  color: var(--color-text);
  font-size: 0.95rem;
}

.about-text em {
  color: var(--color-primary-dark);
  font-style: normal;
  font-weight: 500;
}

.info-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
}

.info-table th,
.info-table td {
  padding: 10px 14px;
  border-bottom: 1px solid var(--color-border);
  text-align: left;
  vertical-align: top;
}

.info-table th {
  color: var(--color-text-light);
  font-weight: 500;
  white-space: nowrap;
  width: 40%;
  background: var(--color-primary-light);
}

.info-table tr:last-child th,
.info-table tr:last-child td {
  border-bottom: none;
}

/* テーマカード */
.theme-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}

.theme-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
}

.theme-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.theme-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.theme-card h4 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

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

/* ===========================
   あらすじ
=========================== */
.story-wrap {
  display: grid;
  grid-template-columns: 280px 1fr;
  gap: 40px;
  align-items: start;
}

.story-img {
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  width: 100%;
}

.story-text p {
  margin-bottom: 16px;
  font-size: 0.95rem;
  line-height: 1.9;
}

.story-text em {
  color: var(--color-accent-dark);
  font-style: normal;
  font-weight: 500;
}

/* ===========================
   登場人物
=========================== */
.characters-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: 24px;
}

.character-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
}

.character-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.character-card--main {
  border-top: 3px solid var(--color-primary-dark);
}

.character-header {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 20px 20px 0;
}

.character-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-serif);
  font-size: 1.1rem;
  font-weight: 700;
  color: #fff;
  flex-shrink: 0;
}

.character-avatar--amane  { background: linear-gradient(135deg, #4a3870, #7c6aaa); }
.character-avatar--mahiru { background: linear-gradient(135deg, #c06090, #e8a0c0); }
.character-avatar--itsuki { background: linear-gradient(135deg, #3a6090, #6090c0); }
.character-avatar--chitose{ background: linear-gradient(135deg, #c07840, #e0a060); }
.character-avatar--yuta   { background: linear-gradient(135deg, #408060, #60a880); }

.character-name {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--color-text);
}

.character-name-ruby {
  font-size: 0.75rem;
  color: var(--color-text-light);
  margin-top: 2px;
}

.character-cv {
  font-size: 0.78rem;
  color: var(--color-primary-dark);
  font-weight: 500;
  margin-top: 4px;
}

.character-body {
  padding: 16px 20px 20px;
}

.character-body p {
  font-size: 0.85rem;
  color: var(--color-text-light);
  line-height: 1.75;
  margin-bottom: 12px;
}

.character-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.char-tag {
  padding: 3px 10px;
  background: var(--color-primary-light);
  color: var(--color-primary-dark);
  border-radius: 20px;
  font-size: 0.72rem;
  font-weight: 500;
}

/* ===========================
   スタッフ
=========================== */
.staff-tables {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.staff-season-title {
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 16px;
  padding: 8px 16px;
  background: var(--color-primary-light);
  border-radius: var(--radius-sm);
  border-left: 4px solid var(--color-primary-dark);
}

/* ===========================
   主題歌
=========================== */
.music-cards {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}

.music-card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  border: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
  transition: transform 0.2s, box-shadow 0.2s;
}

.music-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.music-card--op {
  border-top: 4px solid var(--color-primary-dark);
}

.music-card--ed {
  border-top: 4px solid var(--color-accent-dark);
}

.music-type {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-text-light);
  margin-bottom: 8px;
}

.music-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 6px;
}

.music-artist {
  font-size: 0.85rem;
  color: var(--color-primary-dark);
  font-weight: 500;
  margin-bottom: 12px;
}

.music-desc {
  font-size: 0.82rem;
  color: var(--color-text-light);
  line-height: 1.7;
}

/* ===========================
   各話リスト
=========================== */
.episodes-table-wrap {
  overflow-x: auto;
  margin-bottom: 28px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-sm);
}

.episodes-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.88rem;
  background: var(--color-white);
}

.episodes-table thead th {
  background: var(--color-primary-dark);
  color: #fff;
  padding: 12px 16px;
  text-align: left;
  font-weight: 500;
  letter-spacing: 0.05em;
}

.episodes-table tbody tr {
  border-bottom: 1px solid var(--color-border);
  transition: background 0.15s;
}

.episodes-table tbody tr:hover {
  background: var(--color-primary-light);
}

.episodes-table tbody td {
  padding: 11px 16px;
  vertical-align: middle;
}

.episodes-table tbody td:first-child {
  font-weight: 700;
  color: var(--color-primary-dark);
  text-align: center;
  width: 40px;
}

.season2-notice {
  display: flex;
  align-items: center;
  gap: 16px;
  background: linear-gradient(135deg, #2c2440, #4a3870);
  color: #fff;
  padding: 20px 24px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
}

.notice-icon {
  font-size: 2rem;
  flex-shrink: 0;
}

.season2-notice strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 4px;
  color: var(--color-primary);
}

.season2-notice p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.85);
}

/* ===========================
   メディア展開
=========================== */
.media-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 20px;
}

.media-card {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
}

.media-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

.media-icon {
  font-size: 2rem;
  margin-bottom: 12px;
}

.media-card h3 {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--color-primary-dark);
  margin-bottom: 8px;
}

.media-card p {
  font-size: 0.83rem;
  color: var(--color-text-light);
  line-height: 1.7;
  margin-bottom: 8px;
}

.media-list {
  list-style: none;
  padding: 0;
}

.media-list li {
  font-size: 0.82rem;
  color: var(--color-text-light);
  padding: 3px 0 3px 14px;
  position: relative;
}

.media-list li::before {
  content: '•';
  position: absolute;
  left: 0;
  color: var(--color-primary);
}

/* ===========================
   ギャラリー
=========================== */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 20px;
}

.gallery-item {
  background: var(--color-white);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: transform 0.2s, box-shadow 0.2s;
}

.gallery-item:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.gallery-item img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  object-position: top;
  transition: transform 0.3s;
}

.gallery-item:hover img {
  transform: scale(1.03);
}

.gallery-caption {
  padding: 10px 14px;
  font-size: 0.8rem;
  color: var(--color-text-light);
  text-align: center;
}

/* ===========================
   フッター
=========================== */
.site-footer {
  background: linear-gradient(135deg, #1e1830, #2c2440);
  color: rgba(255,255,255,0.7);
  padding: 48px 24px 32px;
  text-align: center;
}

.footer-inner {
  max-width: 800px;
  margin: 0 auto;
}

.footer-back {
  margin-bottom: 24px;
}

.btn-back {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 28px;
  background: var(--color-primary-dark);
  color: #fff;
  border-radius: 30px;
  font-size: 0.9rem;
  font-weight: 500;
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 16px rgba(124,106,170,0.4);
}

.btn-back:hover {
  background: #9a80cc;
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(124,106,170,0.5);
  text-decoration: none;
}

.footer-title {
  font-family: var(--font-serif);
  font-size: 1rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: 8px;
}

.footer-copy {
  font-size: 0.78rem;
  margin-bottom: 6px;
}

.footer-note {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.4);
}

/* ===========================
   フローティングボタン
=========================== */
.floating-back {
  position: fixed;
  bottom: 28px;
  right: 28px;
  background: var(--color-primary-dark);
  color: #fff;
  padding: 12px 18px;
  border-radius: 30px;
  font-size: 0.82rem;
  font-weight: 700;
  box-shadow: 0 4px 20px rgba(100,80,160,0.4);
  transition: background 0.2s, transform 0.2s, box-shadow 0.2s;
  z-index: 200;
  letter-spacing: 0.05em;
}

.floating-back:hover {
  background: #9a80cc;
  transform: translateY(-3px);
  box-shadow: 0 6px 28px rgba(100,80,160,0.5);
  text-decoration: none;
}

/* ===========================
   レスポンシブ
=========================== */
@media (max-width: 900px) {
  .about-grid {
    grid-template-columns: 1fr;
  }

  .story-wrap {
    grid-template-columns: 1fr;
  }

  .story-img-wrap {
    max-width: 300px;
    margin: 0 auto;
  }

  .staff-tables {
    grid-template-columns: 1fr;
  }

  .hero-content {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .hero-meta-item {
    justify-content: center;
  }

  .meta-label {
    min-width: auto;
  }
}

@media (max-width: 600px) {
  .main-nav li a {
    padding: 10px 10px;
    font-size: 0.75rem;
  }

  .section {
    padding: 48px 16px;
  }

  .hero {
    padding: 32px 16px;
  }

  .hero-images {
    flex-direction: column;
    align-items: center;
  }

  .hero-img--sub {
    display: none;
  }

  .hero-img--main {
    width: 160px;
  }

  .gallery-item img {
    height: 220px;
  }

  .floating-back {
    bottom: 16px;
    right: 16px;
    padding: 10px 14px;
    font-size: 0.78rem;
  }
}