/* ========== CSS Variable & Reset ========== */
:root {
    --primary: #8B4513;
    --primary-light: #C4956A;
    --primary-dark: #5C2D0E;
    --accent: #B8860B;
    --accent-light: #DAA520;
    --warm-white: #FAF7F2;
    --cream: #F5F0E8;
    --charcoal: #1A1A1A;
    --text: #333;
    --text-light: #777;
    --border: #E8E2D8;
    --bg-white: #FFFFFF;

    --font-body: 'Noto Sans JP', sans-serif;
    --font-heading: 'Noto Serif JP', serif;

    --ease: cubic-bezier(0.25, 0.46, 0.45, 0.94);
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.06), 0 1px 2px rgba(0,0,0,0.04);
    --shadow-md: 0 4px 20px rgba(0,0,0,0.08);
    --shadow-lg: 0 12px 40px rgba(0,0,0,0.12);
    --radius: 12px;
    --radius-sm: 8px;
}

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

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

body {
    font-family: var(--font-body);
    line-height: 1.8;
    color: var(--text);
    background-color: var(--bg-white);
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

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

/* ========== セクション共通 ========== */
.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-label {
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 3px;
    text-transform: uppercase;
    color: var(--primary-light);
    margin-bottom: 8px;
}

.section-title {
    font-family: var(--font-heading);
    font-size: 36px;
    font-weight: 700;
    color: var(--charcoal);
    letter-spacing: 1px;
    position: relative;
    display: inline-block;
}

.section-title::after {
    content: '';
    display: block;
    width: 40px;
    height: 3px;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    margin: 16px auto 0;
    border-radius: 2px;
}

/* ========== ヘッダー ========== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: rgba(255,255,255,0.95);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid rgba(0,0,0,0.06);
    transition: all 0.3s var(--ease);
}

.header-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 72px;
}

.logo {
    display: flex;
    align-items: center;
    text-decoration: none;
    gap: 10px;
    color: var(--charcoal);
    transition: opacity 0.3s var(--ease);
}

.logo:hover { opacity: 0.7; }

.logo-icon {
    font-size: 28px;
    color: var(--primary);
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    letter-spacing: 1px;
}

.logo-sub {
    font-weight: 400;
    color: var(--text-light);
}

.nav-list {
    list-style: none;
    display: flex;
    gap: 32px;
    align-items: center;
}

.nav-list a {
    text-decoration: none;
    color: var(--text);
    font-size: 14px;
    font-weight: 500;
    letter-spacing: 0.3px;
    transition: color 0.3s var(--ease);
    position: relative;
}

.nav-list a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--primary);
    transition: width 0.3s var(--ease);
    border-radius: 1px;
}

.nav-list a:hover { color: var(--primary); }
.nav-list a:hover::after { width: 100%; }

.lang-toggle {
    padding: 6px 16px;
    border: 1.5px solid var(--border);
    background: transparent;
    color: var(--text-light);
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 12px;
    letter-spacing: 1px;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s var(--ease);
}

.lang-active { color: var(--primary); font-weight: 700; }
.lang-toggle:hover { border-color: var(--primary); color: var(--primary); }

/* ========== メインビジュアル ========== */
.hero {
    position: relative;
    height: 100vh;
    min-height: 600px;
    max-height: 900px;
    overflow: hidden;
    display: flex;
    align-items: center;
    justify-content: center;
}

.hero-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    z-index: 1;
}

.hero-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        180deg,
        rgba(0,0,0,0.2) 0%,
        rgba(0,0,0,0.4) 50%,
        rgba(0,0,0,0.6) 100%
    );
    z-index: 2;
}

.hero-content {
    position: relative;
    z-index: 3;
    text-align: center;
    color: #FFF;
    padding: 0 24px;
}

.hero-label {
    font-size: 13px;
    font-weight: 500;
    letter-spacing: 4px;
    text-transform: uppercase;
    opacity: 0.8;
    margin-bottom: 20px;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: 52px;
    font-weight: 700;
    letter-spacing: 4px;
    line-height: 1.2;
    margin-bottom: 20px;
    white-space: nowrap;
}

.hero-subtitle {
    font-size: 18px;
    font-weight: 300;
    letter-spacing: 2px;
    opacity: 0.9;
    margin-bottom: 48px;
}

.hero-actions {
    display: flex;
    gap: 16px;
    justify-content: center;
}

.cta-button {
    display: inline-block;
    padding: 14px 36px;
    background: var(--primary);
    color: #FFF;
    border: none;
    border-radius: 4px;
    font-family: var(--font-body);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s var(--ease);
    text-decoration: none;
}

.cta-button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(139,69,19,0.3);
}

.cta-outline {
    background: transparent;
    border: 1.5px solid rgba(255,255,255,0.6);
}

.cta-outline:hover {
    background: rgba(255,255,255,0.15);
    border-color: #FFF;
    box-shadow: none;
}

.hero-scroll {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    color: rgba(255,255,255,0.6);
    font-size: 11px;
    letter-spacing: 2px;
}

.portfolio-notice {
    position: absolute;
    bottom: 100px;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3;
    font-size: 10px;
    color: #FFF;
    letter-spacing: 0.5px;
    white-space: nowrap;
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: rgba(255,255,255,0.4);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: scaleY(0.6); }
    50% { opacity: 1; transform: scaleY(1); }
}

/* ========== 最新記事セクション ========== */
.featured-articles {
    padding: 100px 0;
    background-color: var(--warm-white);
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 28px;
}

.article-card {
    background: var(--bg-white);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s var(--ease);
    display: flex;
    flex-direction: column;
    cursor: pointer;
}

.article-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-6px);
}

.article-image {
    position: relative;
    width: 100%;
    padding-bottom: 60%;
    overflow: hidden;
    background-color: var(--cream);
}

.article-image img {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s var(--ease);
}

.article-card:hover .article-image img {
    transform: scale(1.08);
}

.category-tag {
    position: absolute;
    top: 14px;
    left: 14px;
    background: var(--primary);
    color: #FFF;
    padding: 4px 14px;
    border-radius: 20px;
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.5px;
    z-index: 2;
}

.article-content {
    padding: 24px;
    flex: 1;
    display: flex;
    flex-direction: column;
}

.article-title {
    font-family: var(--font-heading);
    font-size: 17px;
    font-weight: 700;
    margin-bottom: 10px;
    line-height: 1.5;
    color: var(--charcoal);
}

.article-excerpt {
    font-size: 13px;
    color: var(--text-light);
    margin-bottom: 16px;
    line-height: 1.7;
    flex: 1;
}

.article-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 12px;
    color: var(--text-light);
    padding-top: 14px;
    border-top: 1px solid var(--border);
}

.read-more {
    color: var(--primary);
    font-size: 16px;
    font-weight: 700;
    transition: transform 0.3s var(--ease);
}

.article-card:hover .read-more {
    transform: translateX(4px);
}

/* ========== カテゴリーセクション ========== */
.categories-section {
    padding: 100px 0;
    background: var(--bg-white);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
}

.category-card {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: flex-end;
    text-decoration: none;
    color: #FFF;
    border-radius: var(--radius);
    overflow: hidden;
    aspect-ratio: 3 / 4;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: all 0.4s var(--ease);
}

.category-card:hover {
    box-shadow: var(--shadow-lg);
    transform: translateY(-6px);
}

.category-image {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.6s var(--ease);
}

.category-card:hover .category-image {
    transform: scale(1.08);
}

.category-overlay {
    position: absolute;
    inset: 0;
    background: linear-gradient(
        0deg,
        rgba(0,0,0,0.75) 0%,
        rgba(0,0,0,0.25) 50%,
        rgba(0,0,0,0.05) 100%
    );
    transition: background 0.4s var(--ease);
}

.category-card:hover .category-overlay {
    background: linear-gradient(
        0deg,
        rgba(0,0,0,0.8) 0%,
        rgba(0,0,0,0.35) 50%,
        rgba(0,0,0,0.1) 100%
    );
}

.category-content {
    position: relative;
    z-index: 2;
    padding: 28px;
}

.category-name {
    font-family: var(--font-heading);
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 8px;
    color: #FFF;
    letter-spacing: 1px;
}

.category-description {
    font-size: 13px;
    color: rgba(255,255,255,0.8);
    margin-bottom: 16px;
    line-height: 1.7;
    opacity: 0;
    max-height: 0;
    overflow: hidden;
    transition: all 0.4s var(--ease);
}

.category-card:hover .category-description {
    opacity: 1;
    max-height: 80px;
}

.category-link {
    display: inline-block;
    color: #FFF;
    font-weight: 600;
    font-size: 13px;
    letter-spacing: 0.5px;
    padding-bottom: 2px;
    border-bottom: 1.5px solid rgba(255,255,255,0.5);
    transition: all 0.3s var(--ease);
}

.category-card:hover .category-link {
    border-bottom-color: #FFF;
    letter-spacing: 1px;
}

/* ========== VRセクション ========== */
.vr-section {
    padding: 100px 0;
    background: linear-gradient(135deg, var(--cream) 0%, var(--warm-white) 100%);
}

.vr-content {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 48px;
    align-items: center;
}

.vr-viewer {
    width: 100%;
    aspect-ratio: 16 / 9;
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-lg);
}

.vr-description h3 {
    font-family: var(--font-heading);
    font-size: 26px;
    margin-bottom: 16px;
    color: var(--charcoal);
}

.vr-description p {
    font-size: 15px;
    color: var(--text-light);
    line-height: 1.8;
}

.vr-features {
    list-style: none;
    margin: 20px 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.vr-features li {
    font-size: 14px;
    color: var(--text);
    padding-left: 24px;
    position: relative;
}

.vr-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: 700;
}

.vr-note {
    margin-top: 16px;
    font-size: 12px !important;
    color: var(--text-light) !important;
    font-style: italic;
}

/* ========== アクセスセクション ========== */
.access-section {
    padding: 100px 0;
    background: var(--bg-white);
}

.access-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 48px;
    align-items: stretch;
}

.map-container {
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    min-height: 400px;
}

.map-container iframe {
    display: block;
}

.access-info h3 {
    font-family: var(--font-heading);
    font-size: 26px;
    margin-bottom: 32px;
    color: var(--charcoal);
}

.access-methods {
    display: flex;
    flex-direction: column;
    gap: 28px;
}

.access-method {
    display: flex;
    gap: 16px;
    align-items: flex-start;
    padding: 20px;
    background: var(--warm-white);
    border-radius: var(--radius-sm);
    transition: all 0.3s var(--ease);
}

.access-method:hover {
    box-shadow: var(--shadow-sm);
    transform: translateX(4px);
}

.access-icon {
    font-size: 28px;
    flex-shrink: 0;
    width: 48px;
    height: 48px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-white);
    border-radius: 50%;
    box-shadow: var(--shadow-sm);
}

.access-method h4 {
    font-family: var(--font-heading);
    font-size: 15px;
    font-weight: 700;
    margin-bottom: 6px;
    color: var(--charcoal);
}

.access-method p {
    font-size: 13px;
    color: var(--text-light);
    line-height: 1.7;
}

/* ========== お問い合わせセクション ========== */
.contact-section {
    padding: 100px 0;
    background: var(--cream);
}

.contact-subtitle {
    text-align: center;
    font-size: 15px;
    color: var(--text-light);
    margin-top: -40px;
    margin-bottom: 48px;
}

.contact-form {
    max-width: 640px;
    margin: 0 auto;
    background: var(--bg-white);
    padding: 48px;
    border-radius: var(--radius);
    box-shadow: var(--shadow-md);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.form-group {
    margin-bottom: 24px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    font-size: 13px;
    color: var(--charcoal);
    letter-spacing: 0.3px;
}

.required { color: var(--primary); }

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 1.5px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 14px;
    color: var(--text);
    background: var(--warm-white);
    transition: all 0.3s var(--ease);
}

.form-group input::placeholder,
.form-group textarea::placeholder {
    color: #BBB;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary);
    background: var(--bg-white);
    box-shadow: 0 0 0 4px rgba(139,69,19,0.08);
}

.form-group textarea {
    resize: vertical;
    min-height: 140px;
}

.submit-button {
    width: 100%;
    padding: 16px;
    background: var(--primary);
    color: #FFF;
    border: none;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 15px;
    font-weight: 600;
    letter-spacing: 1px;
    cursor: pointer;
    transition: all 0.3s var(--ease);
}

.submit-button:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 4px 16px rgba(139,69,19,0.25);
}

/* ========== フッター ========== */
.footer {
    background: var(--charcoal);
    color: #FFF;
    padding-top: 64px;
}

.footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

.footer-top {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 60px;
    padding-bottom: 48px;
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: #FFF;
    font-family: var(--font-heading);
    font-size: 20px;
    font-weight: 700;
    margin-bottom: 16px;
}

.footer-logo .logo-icon {
    color: var(--primary-light);
}

.footer-text {
    font-size: 13px;
    line-height: 1.8;
    color: #999;
    margin-bottom: 24px;
}

.social-icons {
    display: flex;
    gap: 12px;
}

.social-icon {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: rgba(255,255,255,0.08);
    border: 1px solid rgba(255,255,255,0.12);
    border-radius: 50%;
    color: #CCC;
    text-decoration: none;
    font-size: 12px;
    font-weight: 700;
    transition: all 0.3s var(--ease);
}

.social-icon:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: #FFF;
    transform: translateY(-2px);
}

.footer-nav {
    display: flex;
    gap: 60px;
    justify-content: flex-end;
}

.footer-title {
    font-family: var(--font-heading);
    font-size: 14px;
    font-weight: 700;
    margin-bottom: 20px;
    color: var(--primary-light);
    letter-spacing: 1px;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-links a {
    font-size: 13px;
    color: #999;
    text-decoration: none;
    transition: all 0.3s var(--ease);
}

.footer-links a:hover {
    color: #FFF;
    padding-left: 4px;
}

.footer-bottom {
    border-top: 1px solid rgba(255,255,255,0.08);
    padding: 20px 0;
    text-align: center;
}

.copyright {
    font-size: 12px;
    color: #666;
    letter-spacing: 0.5px;
}

.portfolio-notice-footer {
    font-size: 10px;
    color: #555;
    margin-top: 8px;
    letter-spacing: 0.3px;
}

/* ========== レスポンシブ ========== */
@media (max-width: 1024px) {
    .articles-grid {
        grid-template-columns: repeat(2, 1fr);
    }

    .categories-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .header-container {
        flex-wrap: wrap;
        height: auto;
        padding: 12px 20px;
        gap: 8px;
    }

    .nav-menu { order: 3; width: 100%; }

    .nav-list {
        gap: 16px;
        font-size: 13px;
        flex-wrap: wrap;
        justify-content: center;
        padding: 10px 0;
        border-top: 1px solid var(--border);
    }

    .lang-toggle { order: 2; }

    .hero {
        height: 80vh;
        min-height: 500px;
    }

    .hero-title {
        font-size: 32px;
        white-space: normal;
        letter-spacing: 2px;
    }

    .hero-subtitle { font-size: 15px; }

    .hero-actions {
        flex-direction: column;
        align-items: center;
        gap: 12px;
    }

    .section-header { margin-bottom: 40px; }

    .section-title {
        font-size: 28px;
    }

    .articles-grid {
        grid-template-columns: 1fr;
        gap: 20px;
    }

    .categories-grid {
        grid-template-columns: 1fr 1fr;
        gap: 16px;
    }

    .vr-content,
    .access-content {
        grid-template-columns: 1fr;
        gap: 32px;
    }

    .map-container { min-height: 300px; }

    .footer-top {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-nav { justify-content: flex-start; }

    .form-row { grid-template-columns: 1fr; }

    .contact-form { padding: 28px; }

    .featured-articles,
    .categories-section,
    .vr-section,
    .access-section,
    .contact-section {
        padding: 64px 0;
    }
}

@media (max-width: 480px) {
    .hero { height: 70vh; min-height: 420px; }
    .hero-title { font-size: 26px; }
    .hero-subtitle { font-size: 13px; }
    .hero-label { font-size: 11px; }
    .hero-scroll { display: none; }

    .section-title { font-size: 24px; }

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

    .category-card { padding: 28px 20px; }

    .footer-nav { flex-direction: column; gap: 32px; }
}