/* 基本設定 */
:root {
    --color-dark: #1a1a1a;
    --color-dark-gray: #2d2d2d;
    --color-blue: #1e3a8a;
    --color-purple: #4c1d95;
    --color-gold: #b8860b;
    --color-silver: #c0c0c0;
    --color-text: #ffffff;
    --color-text-secondary: #cccccc;
}

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

body {
    font-family: 'Noto Sans JP', sans-serif;
    background-color: var(--color-dark);
    color: var(--color-text);
    line-height: 1.6;
}

/* ヒーローヘッダー */
.hero {
    height: 100vh;
    background-image: url('img/end01.jpg');
    background-size: cover;
    background-position: center;
    background-attachment: fixed;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.5);
}

.hero-content {
    position: relative;
    z-index: 1;
    padding: 2rem;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.5);
    animation: fadeInUp 1s ease-out;
}

.hero .subtitle {
    font-size: 2rem;
    color: var(--color-gold);
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease-out 0.3s backwards;
}

.hero .catchphrase {
    font-size: 1.5rem;
    color: var(--color-silver);
    animation: fadeInUp 1s ease-out 0.6s backwards;
}

/* セクション共通 */
section {
    padding: 5rem 2rem;
}

h2 {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--color-gold);
}

/* 世界観セクション */
.world-view {
    background-color: var(--color-dark-gray);
}

.world-content {
    max-width: 1200px;
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    align-items: center;
}

.world-image img {
    width: 100%;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(0, 0, 0, 0.3);
}

.world-text p {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

/* キーワードセクション */
.keyword-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.keyword-item {
    background-color: var(--color-dark-gray);
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s ease;
}

.keyword-item:hover {
    transform: translateY(-10px);
}

.keyword-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 5px;
    margin-bottom: 1rem;
}

.keyword-item h3 {
    color: var(--color-gold);
    margin-bottom: 0.5rem;
}

/* キャラクター紹介 */
.character-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1200px;
    margin: 0 auto;
}

.character-item {
    background-color: var(--color-dark-gray);
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
    transition: transform 0.3s ease;
}

.character-item:hover {
    transform: translateY(-10px);
}

.character-item img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    border-radius: 5px;
    margin-bottom: 1rem;
}

.character-item h3 {
    color: var(--color-gold);
    margin-bottom: 0.5rem;
}

/* プロローグ */
.prologue {
    background-color: var(--color-dark-gray);
    text-align: center;
}

.prologue-content {
    max-width: 800px;
    margin: 0 auto;
}

.prologue-content p {
    font-size: 1.2rem;
    margin-bottom: 1rem;
}

/* ギャラリー */
.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    max-width: 1200px;
    margin: 0 auto;
}

.gallery-grid img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 5px;
    transition: transform 0.3s ease;
    cursor: pointer;
}

.gallery-grid img:hover {
    transform: scale(1.05);
}

/* AIギャラリー */
.ai-gallery {
    background-color: rgba(30, 30, 50, 0.8);
    padding-top: 4rem;
    padding-bottom: 4rem;
    position: relative;
    overflow: hidden;
}

.ai-gallery::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(76, 29, 149, 0.2) 0%, rgba(30, 58, 138, 0.2) 100%);
    z-index: 0;
}

.ai-gallery h2 {
    position: relative;
    z-index: 1;
    color: #a78bfa;
    text-shadow: 0 0 15px rgba(167, 139, 250, 0.5);
}

.ai-gallery .gallery-description {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto 2rem;
    color: #d8b4fe;
    font-size: 1.1rem;
}

.ai-gallery .gallery-grid {
    position: relative;
    z-index: 1;
}

.ai-gallery .gallery-grid img {
    height: 300px;
    border-radius: 10px;
    box-shadow: 0 0 20px rgba(167, 139, 250, 0.3);
    border: 2px solid transparent;
    transition: all 0.4s ease;
}

.ai-gallery .gallery-grid img:hover {
    transform: scale(1.03) translateY(-5px);
    border-color: #a78bfa;
    box-shadow: 0 10px 25px rgba(167, 139, 250, 0.5);
}

/* ゲーム */
.games {
    background-color: var(--color-dark-gray);
}

.games-content {
    max-width: 800px;
    margin: 0 auto;
}

.game-item {
    background-color: var(--color-dark);
    padding: 2rem;
    border-radius: 10px;
    text-align: center;
    margin-bottom: 2rem;
}

.game-item h3 {
    color: var(--color-gold);
    font-size: 1.5rem;
    margin-bottom: 1rem;
}

.game-item p {
    margin-bottom: 1.5rem;
    color: var(--color-text-secondary);
}

.game-screenshots {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.game-screenshots img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 10px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    transition: transform 0.3s ease;
}

.game-screenshots img:hover {
    transform: scale(1.05);
}

.game-link {
    display: inline-block;
    padding: 1rem 2rem;
    background-color: var(--color-gold);
    color: var(--color-dark);
    text-decoration: none;
    border-radius: 5px;
    font-weight: bold;
    transition: transform 0.3s ease;
}

.game-link:hover {
    transform: translateY(-3px);
    background-color: var(--color-silver);
}

/* 発売情報 */
.release-info {
    background-color: var(--color-dark-gray);
    text-align: center;
}

.release-content {
    max-width: 800px;
    margin: 0 auto;
}

.release-content p {
    font-size: 1.5rem;
    margin-bottom: 2rem;
}

.sns-links {
    display: flex;
    justify-content: center;
    gap: 2rem;
}

.sns-link {
    color: var(--color-text);
    text-decoration: none;
    padding: 0.5rem 1rem;
    border: 1px solid var(--color-gold);
    border-radius: 5px;
    transition: all 0.3s ease;
}

.sns-link:hover {
    background-color: var(--color-gold);
    color: var(--color-dark);
}

/* フッター */
footer {
    background-color: var(--color-dark-gray);
    text-align: center;
    padding: 2rem;
}

/* アニメーション */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* レスポンシブ対応 */
@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }
    
    .hero .subtitle {
        font-size: 1.5rem;
    }
    
    .hero .catchphrase {
        font-size: 1.2rem;
    }
    
    .world-content {
        grid-template-columns: 1fr;
    }
    
    .game-screenshots {
        grid-template-columns: 1fr;
    }
    
    section {
        padding: 3rem 1rem;
    }
    
    h2 {
        font-size: 2rem;
        margin-bottom: 2rem;
    }
    
    .ai-gallery .gallery-grid img {
        height: 220px;
    }
    
    .ai-gallery .gallery-description {
        font-size: 1rem;
        margin-bottom: 1.5rem;
    }
}

/* モバイル小型画面対応 */
@media (max-width: 480px) {
    .gallery-grid {
        grid-template-columns: 1fr;
    }
    
    .ai-gallery .gallery-grid img {
        height: 250px;
    }
}

.kindle-link-container {
    margin: 2rem 0;
    text-align: center;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 2rem;
}

.kindle-link {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    padding: 1.5rem 2.5rem;
    background: linear-gradient(135deg, #1e3a8a 0%, #4c1d95 100%);
    color: var(--color-text);
    text-decoration: none;
    border-radius: 15px;
    transition: all 0.3s ease;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
    flex: 0 1 300px;
    max-width: 300px;
}

.kindle-link:hover {
    transform: translateY(-5px);
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
    background: linear-gradient(135deg, #2447a0 0%, #5a24b0 100%);
}

.kindle-link i {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--color-gold);
}

.kindle-title {
    font-size: 1.3rem;
    font-weight: bold;
    margin-bottom: 0.3rem;
}

.kindle-subtitle {
    font-size: 0.9rem;
    color: var(--color-silver);
}