/* リセット・基本設定 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    /* カラーパレット - オレンジと緑の明るい色調 */
    --primary-color: #FF8C42;
    --secondary-color: #4CAF50;
    --accent-color: #FFC107;
    --purple-accent: #A5D6A7;
    --text-dark: #2C3E50;
    --text-light: #7F8C8D;
    --white: #FFFFFF;
    --light-bg: #F8F9FA;
    --gradient-1: linear-gradient(135deg, #FF8C42, #4CAF50);
    --gradient-2: linear-gradient(135deg, #FFC107, #FF8C42);
    --gradient-3: linear-gradient(135deg, #4CAF50, #A5D6A7);
    --shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 15px 40px rgba(0, 0, 0, 0.15);
    --border-radius: 20px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Nunito', sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* ヘッダー・ナビゲーション */
.header {
    position: fixed;
    top: 0;
    width: 100%;
    z-index: 1000;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.2);
    transition: var(--transition);
}

.navbar {
    padding: 1rem 0;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.logo-img {
    height: 40px;
    width: auto;
    border-radius: 8px;
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 600;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    transition: var(--transition);
    position: relative;
}

.nav-link:hover {
    color: var(--primary-color);
    background-color: rgba(255, 140, 66, 0.1);
    transform: translateY(-1px);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--text-dark);
    border-radius: 2px;
    transition: var(--transition);
}

/* ヒーローセクション */
.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(135deg, #FFC107, #FF8C42, #4CAF50);
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="20" cy="20" r="1" fill="white" opacity="0.1"/><circle cx="80" cy="40" r="1" fill="white" opacity="0.1"/><circle cx="40" cy="80" r="1" fill="white" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
    z-index: 1;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.hero-text {
    color: var(--white);
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 800;
    line-height: 1.2;
    margin-bottom: 1.5rem;
}

.gradient-text {
    color: var(--white);
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.25rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    font-weight: 400;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    text-decoration: none;
    font-weight: 700;
    border-radius: var(--border-radius);
    transition: var(--transition);
    font-size: 1.1rem;
    border: none;
    cursor: pointer;
    position: relative;
    overflow: hidden;
}

.btn-primary {
    background: var(--white);
    color: var(--text-dark);
    box-shadow: var(--shadow);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
}

.btn-outline {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

.btn-outline:hover {
    background: var(--white);
    color: var(--text-dark);
    transform: translateY(-3px);
}

/* コンパクトなヒーローセクション */
.hero-compact {
    min-height: 60vh;
    padding: 4rem 0;
}

.hero-compact .hero-content {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2rem;
}

.hero-compact .hero-title {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.hero-compact .hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
}

.hero-compact .hero-buttons {
    justify-content: center;
}

/* フローティングシェイプ */
.hero-visual {
    position: relative;
    height: 500px;
}

.floating-shapes {
    position: absolute;
    width: 100%;
    height: 100%;
}

.shape {
    position: absolute;
    border-radius: 50%;
    animation: float 6s ease-in-out infinite;
    opacity: 0.8;
}

.shape-1 {
    width: 80px;
    height: 80px;
    background: var(--white);
    top: 20%;
    left: 20%;
    animation-delay: 0s;
}

.shape-2 {
    width: 60px;
    height: 60px;
    background: var(--accent-color);
    top: 60%;
    right: 30%;
    animation-delay: 2s;
}

.shape-3 {
    width: 100px;
    height: 100px;
    background: var(--secondary-color);
    bottom: 30%;
    left: 40%;
    animation-delay: 4s;
}

.shape-4 {
    width: 40px;
    height: 40px;
    background: var(--white);
    top: 10%;
    right: 20%;
    animation-delay: 1s;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

/* セクション共通スタイル */
.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--text-dark);
    margin-bottom: 1rem;
}

.section-title-compact {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-dark);
    margin-bottom: 1.5rem;
}

.section-divider {
    width: 60px;
    height: 4px;
    background: var(--gradient-1);
    margin: 0 auto;
    border-radius: 2px;
}

/* Aboutセクション */
.about {
    padding: 6rem 0;
    background: var(--light-bg);
}

.about-compact {
    padding: 3rem 0;
    background: transparent;
}

.about-description {
    font-size: 1.2rem;
    line-height: 1.8;
    margin-bottom: 3rem;
    text-align: center;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
    color: var(--text-light);
}

.about-description-compact {
    font-size: 1.1rem;
    line-height: 1.7;
    color: var(--text-light);
    margin: 0;
}

.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    text-align: center;
    transition: var(--transition);
}

.feature:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.feature-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto 1.5rem;
    background: var(--gradient-1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
    color: var(--white);
}

.feature h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.feature p {
    color: var(--text-light);
    line-height: 1.6;
}

/* Gamesセクション */
.games {
    padding: 6rem 0;
}

.games-compact {
    padding: 3rem 0;
    background: transparent;
}

.games-grid {
    display: grid;
    gap: 3rem;
}

.game-card {
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
}

.game-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
}

.game-card.featured {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 0;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.15);
}

.game-image {
    position: relative;
    overflow: hidden;
}

.game-img {
    width: 100%;
    height: 300px;
    object-fit: cover;
    transition: var(--transition);
}

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

.game-overlay {
    position: absolute;
    top: 1rem;
    right: 1rem;
}

.game-tag {
    background: var(--gradient-2);
    color: var(--white);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 700;
}

.game-content {
    padding: 2.5rem;
    display: flex;
    flex-direction: column;
    justify-content: center;
}

.game-title {
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    background: var(--gradient-1);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.game-description {
    color: var(--text-light);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.game-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 2rem;
}

.tag {
    background: var(--purple-accent);
    color: var(--text-dark);
    padding: 0.4rem 1rem;
    border-radius: 15px;
    font-size: 0.9rem;
    font-weight: 600;
}

.game-links {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.game-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.8rem 1.5rem;
    text-decoration: none;
    font-weight: 600;
    border-radius: 25px;
    transition: var(--transition);
    color: var(--white);
    background: var(--gradient-1);
}

.game-link:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow);
}

/* Contactセクション */
.contact {
    padding: 6rem 0;
    background: var(--light-bg);
}

.contact-content {
    max-width: 600px;
    margin: 0 auto;
    text-align: center;
}

.contact-info h3 {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.contact-info p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
    line-height: 1.6;
}

.social-links {
    display: flex;
    justify-content: center;
    gap: 1rem;
}

.social-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    background: var(--white);
    color: var(--text-dark);
    text-decoration: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    transition: var(--transition);
    font-weight: 600;
}

.social-link:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-hover);
    background: var(--gradient-1);
    color: var(--white);
}

.social-icon {
    width: 40px;
    height: 40px;
    background: var(--gradient-1);
    color: var(--white);
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    text-decoration: none;
    transition: var(--transition);
}

.social-icon.x-icon {
    background: #000000;
    padding: 8px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.x-logo {
    width: 20px;
    height: 20px;
    object-fit: contain;
    filter: brightness(1);
}

.social-icon:hover {
    transform: translateY(-3px) scale(1.1);
}

.social-icon.x-icon:hover {
    background: #1a1a1a;
    box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
    transform: translateY(-4px) scale(1.15);
}

/* Footer */
.footer {
    background: var(--text-dark);
    color: var(--white);
    padding: 3rem 0;
}

.footer-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 2rem;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 12px;
}

.footer-text p {
    margin: 0;
    opacity: 0.8;
}

.footer-social {
    display: flex;
    gap: 1rem;
}

/* レスポンシブデザイン */
@media (max-width: 768px) {
    .hamburger {
        display: none;
    }

    .nav-menu {
        display: flex;
        flex-direction: row;
        gap: 1rem;
        flex-wrap: wrap;
    }

    .nav-link {
        font-size: 0.9rem;
        padding: 0.4rem 0.8rem;
    }

    .hero-content {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-title {
        font-size: 2.5rem;
    }

    .hero-visual {
        height: 300px;
    }

    .game-card.featured {
        grid-template-columns: 1fr;
    }

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

    .section-title {
        font-size: 2rem;
    }

    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 1rem;
    }

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

    .features {
        grid-template-columns: 1fr;
    }

    .social-links {
        flex-direction: column;
        align-items: center;
    }

    .game-links {
        flex-direction: column;
    }

    .hero-compact {
        min-height: 50vh;
        padding: 3rem 0;
    }

    .hero-compact .hero-title {
        font-size: 2.5rem;
    }

    .about-compact {
        padding: 2rem 0;
    }

    .section-title-compact {
        font-size: 1.8rem;
    }

    .about-description-compact {
        font-size: 1rem;
        padding: 0 1rem;
    }

    .games .section-title {
        font-size: 2.5rem;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 15px;
    }

    .hero-title {
        font-size: 2rem;
    }

    .section-title {
        font-size: 1.8rem;
    }

    .feature {
        padding: 2rem;
    }

    .game-content {
        padding: 2rem;
    }
}