/* ダークテーマのベーススタイル */
.dark-theme {
    background-color: var(--dark-bg-primary);
    color: var(--dark-text-primary);
    min-height: 100vh;
}

/* ダークヘッダー */
.dark-header {
    background: linear-gradient(135deg, var(--dark-bg-secondary), var(--dark-accent-purple));
    box-shadow: 0 2px 10px rgb(65, 39, 35);
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
}

.header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.1rem 2rem; /* パディングをさらに小さくして高さを減らす */
    max-width: 1200px;
    margin: 0 auto;
}

.site-title {
    display: flex;
    align-items: center;
}

.dark-header-title {
    color: var(--dark-accent-red);
    font-size: 1.5rem; /* フォントサイズを少し小さく */
    font-weight: 500;
    margin: 0;
    background: linear-gradient(45deg, var(--dark-accent-red), #bd1cdd);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    font-family: 'Shippori Mincho', serif;
}

.dark-nav-link {
    color: var(--dark-text-primary) !important;
    font-weight: 500;
    font-size: 0.95rem; /* フォントサイズを小さく */
    transition: color 0.3s;
}

.dark-nav-link:hover {
    color: var(--dark-accent-gold) !important;
}

/* ダークメインコンテンツ */
.dark-main {
    background-color: var(--dark-bg-primary);
}

.dark-section {
    padding: 5rem 0;
}

/* ダークタイトル */
.dark-title {
                font-family: 'Shippori Mincho', serif;
    color: var(--dark-accent-gold);
    text-align: center;
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 2rem;
    background: linear-gradient(45deg, var(--dark-accent-gold), #941d8e);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.dark-section-title {
    color: var(--dark-accent-red);
    font-size: 2.2rem;
    margin-bottom: 1.5rem;
    text-align: center;
    position: relative;
}

.dark-section-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 3px;
    background: linear-gradient(90deg, var(--dark-accent-red), var(--dark-accent-purple));
}

.dark-subtitle {
    color: var(--dark-accent-gold);
    font-size: 1.4rem;
    margin-bottom: 0.8rem;
}

/* ダークテキスト */
.dark-text {
    color: var(--dark-text-secondary);
    line-height: 1.7;
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

/* ダークゲームタグ */
.dark-game-tag {
    display: inline-block;
    padding: 0.4rem 1rem;
    background: linear-gradient(135deg, var(--dark-accent-red), var(--dark-accent-purple));
    color: white;
    font-size: 0.9rem;
    border-radius: 25px;
    font-weight: 600;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    box-shadow: 1px 1px 2px rgba(90, 88, 226, 0.904);
    margin-right: 0.8rem;
    margin-bottom: 0.5rem;
}

/* メインビジュアル */
.dark-main-visual {
    text-align: center;
    margin: 3rem auto;
    position: relative;
}

.dark-main-image {
    width: 80%;
    height: auto;
    max-height: 576px;
    object-fit: contain;
    border-radius: 15px;
    box-shadow: 0 8px 32px rgba(0,0,0,0.6);
    filter: contrast(1.1) brightness(0.95);
}

/* ダークテキストブロック */
.dark-text-block {
    background: linear-gradient(135deg, var(--dark-bg-secondary), var(--dark-bg-card));
    padding: 2.5rem;
    border-radius: 15px;
    margin: 2rem auto;
    max-width: 800px;
    border: 1px solid var(--dark-border);
    box-shadow: 0 4px 20px rgba(0,0,0,0.4);
}

.dark-game-block {
    background: linear-gradient(135deg, var(--dark-bg-secondary), var(--dark-bg-card2)s);
    padding: 2.5rem;
    border-radius: 15px;
    margin: 2rem auto;
    max-width: 800px;
    border: 1px solid var(--dark-border);
    box-shadow: 0 4px 20px rgba(187, 25, 100, 0.795);
}


/* ストーリーセクション */
.dark-story-section {
    margin: 4rem 0;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.dark-story-content {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    margin-top: 2rem;
}

.dark-story-block {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
    background: var(--dark-bg-card);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid var(--dark-border);
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.dark-story-block.reverse {
    direction: rtl;
}

.dark-story-block.reverse > * {
    direction: ltr;
}

.dark-story-image {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
    filter: contrast(1.1) brightness(0.9);
}

.dark-story-text {
    padding: 1rem;
}

/* キャラクター紹介 */
.dark-character-section {
    margin: 4rem 0;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.dark-character-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-top: 2rem;
}

.dark-character-card {
    background: linear-gradient(135deg, var(--dark-bg-card), var(--dark-bg-secondary));
    border-radius: 15px;
    overflow: hidden;
    border: 1px solid var(--dark-border);
    box-shadow: 0 6px 25px rgba(0,0,0,0.4);
    transition: transform 0.3s, box-shadow 0.3s;
}

.dark-character-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 12px 35px rgba(139,0,0,0.3);
}

.dark-character-image {
    height: 250px;
    overflow: hidden;
    position: relative;
}

.dark-character-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: contrast(1.1) brightness(0.85) saturate(1.2);
}

.dark-character-image::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(180deg, transparent 0%, rgba(0,0,0,0.3) 100%);
}

.dark-character-info {
    padding: 1.5rem;
}

.dark-character-name {
    color: var(--dark-accent-gold);
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    font-weight: 600;
}

.dark-character-role {
    color: var(--dark-accent-red);
    font-size: 1rem;
    font-weight: 500;
    margin-bottom: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.dark-character-desc {
    color: var(--dark-text-secondary);
    line-height: 1.6;
    font-size: 0.95rem;
}

/* サンプルCG・テキストセクション */
.dark-sample-section {
    margin: 4rem 0;
    max-width: 1000px;
    margin-left: auto;
    margin-right: auto;
}

.dark-sample-content {
    display: flex;
    flex-direction: column;
    gap: 3rem;
    margin-top: 2rem;
}

.dark-sample-item {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
    background: var(--dark-bg-card);
    padding: 2rem;
    border-radius: 15px;
    border: 1px solid var(--dark-border);
    box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.dark-sample-item.reverse {
    direction: rtl;
}

.dark-sample-item.reverse > * {
    direction: ltr;
}

.dark-sample-image {
    position: relative;
}

.dark-sample-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.5);
    filter: contrast(1.1) brightness(0.9);
}

/* ダイアログボックス */
.dark-dialogue-box {
    background: linear-gradient(135deg, #1f1f1f, #2a2a2a);
    border: 2px solid var(--dark-accent-purple);
    border-radius: 15px;
    padding: 1.5rem;
    position: relative;
    box-shadow: 0 4px 20px rgba(74,14,78,0.3);
}

.dark-dialogue-box::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--dark-accent-red), var(--dark-accent-purple), var(--dark-accent-gold));
    border-radius: 15px;
    z-index: -1;
    opacity: 0.7;
}

.dark-speaker {
    color: var(--dark-accent-gold);
    font-weight: 600;
    font-size: 1.1rem;
    margin-bottom: 0.8rem;
    text-shadow: 1px 1px 2px rgba(0,0,0,0.8);
}

.dark-dialogue {
    color: var(--dark-text-primary);
    line-height: 1.6;
    font-size: 1rem;
    font-style: italic;
    margin: 0;
}

/* ダークフッター */
.dark-footer {
    background: linear-gradient(135deg, var(--dark-bg-secondary), var(--dark-accent-purple));
    color: var(--dark-text-secondary);
    text-align: center;
    padding: 2rem 0;
    border-top: 1px solid var(--dark-border);
    box-shadow: 0 -2px 10px rgba(0,0,0,0.3);
}

/* サポートリンクボタン */
.dark-links {
    display: flex;
    justify-content: center;
    gap: 1.0rem;
}

.dark-link {
    display: inline-flex;
    align-items: center;
    padding: 0.5rem 5.0rem;
    background-color: rgba(42, 21, 80, 0.445);
    border: 2px solid rgba(231, 24, 121, 0.655);
    border-radius: 10px;
    color: var(--accent-color);
    text-decoration: none;
    font-size: 1.2rem;
    font-weight: 800;
    min-width: 180px;
    justify-content: center;
    transition: all 0.3s ease;
    box-shadow: 0 2px 5px rgba(165, 35, 89, 0.685);
}

.dark-link:hover {
    background-color: rgba(231, 24, 121, 0.655);
    color: rgb(173, 169, 171);
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(204, 200, 200, 0.705);
}