/* リセットとベーススタイル */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

:root {
    --primary-color: #1a1a1a;
    --secondary-color: #2d2d2d;
    --accent-color: #d4af37;
    --text-primary: #ffffff;
    --text-secondary: #e0e0e0;
    --text-muted: #b0b0b0;
    --bg-dark: #0a0a0a;
    --bg-card: #1a1a1a;
    --border-color: #333333;
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.5);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Hiragino Kaku Gothic ProN', 'Hiragino Sans', 'Yu Gothic', 'Meiryo', sans-serif;
    line-height: 1.8;
    color: var(--text-primary);
    background-color: var(--bg-dark);
    overflow-x: hidden;
}

.site-wrapper {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* ヘッダー */
.site-header {
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: var(--transition);
}

.header-container {
    max-width: 1600px;
    margin: 0 auto;
    padding: 1.5rem 3rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 3rem;
}

.brand-section {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-shrink: 0;
}

.brand-icon {
    font-size: 3rem;
    line-height: 1;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.brand-info {
    display: flex;
    flex-direction: column;
}

.brand-title {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-primary);
    letter-spacing: 2px;
    margin-bottom: 0.25rem;
}

.brand-subtitle {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 300;
    letter-spacing: 1px;
}

.main-navigation {
    flex: 1;
    display: flex;
    justify-content: flex-end;
    align-items: center;
}

.nav-list {
    display: flex;
    list-style: none;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.nav-item {
    display: block;
    padding: 0.75rem 1.25rem;
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    font-weight: 400;
    border-radius: 6px;
    transition: var(--transition);
    position: relative;
}

.nav-item:hover {
    color: var(--accent-color);
    background: rgba(212, 175, 55, 0.1);
}

.nav-item.active {
    color: var(--accent-color);
    background: rgba(212, 175, 55, 0.15);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 0.5rem;
}

.menu-line {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* メインコンテンツ */
.main-content {
    flex: 1;
}

/* ヒーローバナー */
.hero-banner {
    position: relative;
    height: 90vh;
    min-height: 600px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.banner-image-container {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

.banner-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    filter: brightness(0.4);
}

.banner-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(10, 10, 10, 0.8) 0%, rgba(26, 26, 26, 0.6) 100%);
    z-index: 2;
}

.banner-content {
    position: relative;
    z-index: 3;
    text-align: center;
    max-width: 800px;
    padding: 0 2rem;
}

.banner-title {
    font-size: 4rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    letter-spacing: 4px;
    text-shadow: 0 4px 20px rgba(0, 0, 0, 0.8);
    animation: fadeInUp 1s ease-out;
}

.banner-description {
    font-size: 1.3rem;
    color: var(--text-secondary);
    margin-bottom: 2.5rem;
    line-height: 1.8;
    text-shadow: 0 2px 10px rgba(0, 0, 0, 0.8);
    animation: fadeInUp 1s ease-out 0.2s both;
}

.banner-actions {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.action-button {
    display: inline-block;
    padding: 1rem 2.5rem;
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border-radius: 8px;
    transition: var(--transition);
    letter-spacing: 1px;
}

.action-button.primary {
    background: var(--accent-color);
    color: var(--primary-color);
    box-shadow: var(--shadow-md);
}

.action-button.primary:hover {
    background: #e5c547;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.action-button.secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--accent-color);
}

.action-button.secondary:hover {
    background: rgba(212, 175, 55, 0.1);
    transform: translateY(-2px);
}

.action-button.outline {
    background: transparent;
    color: var(--accent-color);
    border: 2px solid var(--accent-color);
}

.action-button.outline:hover {
    background: rgba(212, 175, 55, 0.1);
    transform: translateY(-2px);
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* セクション共通スタイル */
.content-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 5rem 3rem;
}

.section-intro {
    text-align: center;
    max-width: 800px;
    margin: 0 auto 4rem;
}

.section-badge {
    display: inline-block;
    padding: 0.5rem 1.5rem;
    background: rgba(212, 175, 55, 0.15);
    color: var(--accent-color);
    font-size: 0.85rem;
    font-weight: 600;
    letter-spacing: 2px;
    border-radius: 20px;
    margin-bottom: 1.5rem;
}

.section-heading {
    font-size: 2.8rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1.5rem;
    letter-spacing: 2px;
}

.section-text {
    font-size: 1.1rem;
    color: var(--text-secondary);
    line-height: 1.9;
}

.section-footer {
    text-align: center;
    margin-top: 3rem;
}

/* イントロエリア */
.intro-area {
    background: var(--bg-dark);
}

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

.feature-box {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    padding: 2rem;
    background: var(--bg-card);
    border-radius: 16px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.feature-box:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.feature-box.reverse {
    direction: rtl;
}

.feature-box.reverse > * {
    direction: ltr;
}

.feature-image-box {
    overflow: hidden;
    border-radius: 12px;
}

.feature-image {
    width: 100%;
    height: 400px;
    object-fit: cover;
    transition: var(--transition);
}

.feature-box:hover .feature-image {
    transform: scale(1.05);
}

.feature-content-box {
    padding: 1rem;
}

.feature-title {
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.feature-description {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 1.5rem;
}

.feature-link {
    color: var(--accent-color);
    text-decoration: none;
    font-weight: 600;
    transition: var(--transition);
}

.feature-link:hover {
    color: #e5c547;
    padding-left: 0.5rem;
}

/* 歴史プレビュー */
.history-preview {
    background: var(--secondary-color);
}

.timeline-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.timeline-item {
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.timeline-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-color);
}

.timeline-image-wrapper {
    overflow: hidden;
    height: 250px;
}

.timeline-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.timeline-item:hover .timeline-image {
    transform: scale(1.1);
}

.timeline-content {
    padding: 1.5rem;
}

.timeline-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 0.75rem;
}

.timeline-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 書体ショーケース */
.styles-showcase {
    background: var(--bg-dark);
}

.styles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.style-card {
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.style-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.style-image-container {
    overflow: hidden;
    height: 350px;
}

.style-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.style-card:hover .style-image {
    transform: scale(1.1);
}

.style-info {
    padding: 1.5rem;
}

.style-name {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 0.75rem;
}

.style-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

/* 書家プレビュー */
.masters-preview {
    background: var(--secondary-color);
}

.masters-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
}

.masters-text-section {
    padding: 2rem;
}

.masters-image-section {
    overflow: hidden;
    border-radius: 16px;
    border: 1px solid var(--border-color);
}

.masters-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.masters-image-section:hover .masters-image {
    transform: scale(1.05);
}

/* フッター */
.site-footer {
    background: var(--primary-color);
    border-top: 1px solid var(--border-color);
    padding: 4rem 0 2rem;
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 3rem;
    margin-bottom: 3rem;
}

.footer-column {
    display: flex;
    flex-direction: column;
}

.footer-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.footer-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.8;
}

.footer-heading {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: 0.75rem;
}

.footer-links a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.95rem;
    transition: var(--transition);
}

.footer-links a:hover {
    color: var(--accent-color);
    padding-left: 0.5rem;
}

.footer-contact {
    font-size: 0.95rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.footer-contact span {
    color: var(--accent-color);
    font-weight: 600;
}

.footer-note {
    font-size: 0.85rem;
    color: var(--text-muted);
}

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

.copyright {
    font-size: 0.9rem;
    color: var(--text-muted);
}

/* レスポンシブデザイン */
@media (max-width: 1200px) {
    .header-container {
        padding: 1.5rem 2rem;
    }
    
    .content-container {
        padding: 4rem 2rem;
    }
    
    .banner-title {
        font-size: 3rem;
    }
    
    .section-heading {
        font-size: 2.4rem;
    }
}

@media (max-width: 968px) {
    .nav-list {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-dark);
        flex-direction: column;
        padding: 1rem;
        border-top: 1px solid var(--border-color);
    }
    
    .nav-list.active {
        display: flex;
    }
    
    .menu-toggle {
        display: flex;
    }
    
    .feature-box {
        grid-template-columns: 1fr;
    }
    
    .masters-layout {
        grid-template-columns: 1fr;
    }
    
    .banner-title {
        font-size: 2.5rem;
    }
    
    .section-heading {
        font-size: 2rem;
    }
}

@media (max-width: 640px) {
    .header-container {
        padding: 1rem 1.5rem;
    }
    
    .brand-title {
        font-size: 1.4rem;
    }
    
    .content-container {
        padding: 3rem 1.5rem;
    }
    
    .banner-title {
        font-size: 2rem;
    }
    
    .banner-description {
        font-size: 1rem;
    }
    
    .section-heading {
        font-size: 1.8rem;
    }
    
    .banner-actions {
        flex-direction: column;
    }
    
    .action-button {
        width: 100%;
    }
}

/* ページ固有スタイル */
.page-hero {
    position: relative;
    height: 50vh;
    min-height: 400px;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
}

.content-section {
    background: var(--bg-dark);
    padding: 4rem 0;
}

.page-content {
    max-width: 900px;
    margin: 0 auto;
}

.page-content h2 {
    font-size: 2.2rem;
    font-weight: 700;
    color: var(--text-primary);
    margin: 3rem 0 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid var(--accent-color);
}

.page-content h2:first-child {
    margin-top: 0;
}

.page-content p {
    font-size: 1.05rem;
    color: var(--text-secondary);
    line-height: 1.9;
    margin-bottom: 1.5rem;
}

.content-image {
    margin: 2.5rem 0;
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
}

.content-image img {
    width: 100%;
    height: auto;
    display: block;
}

.concept-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin: 2.5rem 0;
}

.concept-item {
    background: var(--bg-card);
    padding: 2rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.concept-item:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
    border-color: var(--accent-color);
}

.concept-item h3 {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 1rem;
}

.concept-item p {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.8;
    margin-bottom: 0;
}

.benefits-list {
    list-style: none;
    margin: 2rem 0;
    padding: 0;
}

.benefits-list li {
    background: var(--bg-card);
    padding: 1.5rem;
    margin-bottom: 1rem;
    border-radius: 8px;
    border-left: 4px solid var(--accent-color);
    border: 1px solid var(--border-color);
    border-left: 4px solid var(--accent-color);
    transition: var(--transition);
}

.benefits-list li:hover {
    transform: translateX(5px);
    box-shadow: var(--shadow-sm);
}

.benefits-list li strong {
    color: var(--accent-color);
    font-weight: 600;
}

.contact-form {
    background: var(--bg-card);
    padding: 2.5rem;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    margin: 2.5rem 0;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 1rem;
    background: var(--bg-dark);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    font-family: inherit;
    transition: var(--transition);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent-color);
    box-shadow: 0 0 0 3px rgba(212, 175, 55, 0.1);
}

.form-group textarea {
    min-height: 150px;
    resize: vertical;
}

.gallery-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
    margin: 2rem 0;
}

.gallery-item {
    background: var(--bg-card);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border-color);
    transition: var(--transition);
}

.gallery-item:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-color);
}

.gallery-image-wrapper {
    overflow: hidden;
    height: 400px;
}

.gallery-image {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition);
}

.gallery-item:hover .gallery-image {
    transform: scale(1.1);
}

.gallery-info {
    padding: 1.5rem;
}

.gallery-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 0.75rem;
}

.gallery-description {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.8;
}