/* ========================================
   CSS Reset & Base Styles
   ======================================== */

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

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Noto Sans JP', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    line-height: 1.7;
    color: #333;
    background-color: #fafafa;
}

/* ========================================
   Typography
   ======================================== */

h1, h2, h3, h4, h5, h6 {
    font-weight: 500;
    line-height: 1.3;
    margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }

p {
    margin-bottom: 1rem;
    color: #666;
}

a {
    color: #2563eb;
    text-decoration: none;
    transition: color 0.3s ease;
}

a:hover {
    color: #1d4ed8;
}

/* ========================================
   Layout Components
   ======================================== */

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-title {
    text-align: center;
    margin-bottom: 3rem;
    color: #1f2937;
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 3px;
    background: linear-gradient(90deg, #3b82f6, #8b5cf6);
    margin: 1rem auto;
    border-radius: 2px;
}

/* ========================================
   Header
   ======================================== */

.header {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    transition: all 0.3s ease;
}

.header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 2rem;
}

.logo {
    font-size: 1.8rem;
    font-weight: 700;
    margin-bottom: 0;
}

.logo a {
    background: linear-gradient(135deg, #3b82f6, #8b5cf6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

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

.nav-list a {
    font-weight: 500;
    color: #374151;
    padding: 0.5rem 1rem;
    border-radius: 25px;
    transition: all 0.3s ease;
}

.nav-list a:hover,
.nav-list a.current {
    background: #f3f4f6;
    color: #3b82f6;
}

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

.mobile-menu-toggle span {
    width: 25px;
    height: 3px;
    background: #374151;
    transition: all 0.3s ease;
    border-radius: 2px;
}

/* ========================================
   Hero Section
   ======================================== */

.hero {
    background: linear-gradient(135deg, #4338ca 0%, #6366f1 50%, #8b5cf6 100%);
    color: #ffffff;
    padding: 8rem 2rem 6rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    z-index: 0;
}

.hero-content {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

.hero-title {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.5), 0 4px 8px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.3rem;
    margin-bottom: 2rem;
    opacity: 1.0;
    color: #ffffff;
    text-shadow: 0 2px 6px rgba(0, 0, 0, 0.8), 0 4px 12px rgba(0, 0, 0, 0.4);
}

.hero-description {
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: 3rem;
    opacity: 1.0;
    color: #ffffff;
    text-shadow: 0 2px 6px rgba(0, 0, 0, 0.8), 0 4px 12px rgba(0, 0, 0, 0.4);
}

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

/* ========================================
   Page Hero
   ======================================== */

.page-hero {
    background: linear-gradient(135deg, #f1f5f9 0%, #e2e8f0 100%);
    padding: 4rem 2rem 3rem;
    text-align: center;
    border-bottom: 1px solid #e2e8f0;
}

.page-hero h1 {
    color: #1f2937;
    margin-bottom: 0.5rem;
}

.page-hero p {
    color: #6b7280;
    font-size: 1.1rem;
    margin-bottom: 1rem;
}

.breadcrumb {
    color: #9ca3af;
    font-size: 0.9rem;
}

.breadcrumb a {
    color: #3b82f6;
}

/* ========================================
   Content Section
   ======================================== */

.content-section {
    padding: 4rem 0;
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-block;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 500;
    text-decoration: none;
    transition: all 0.3s ease;
    border: 2px solid transparent;
    cursor: pointer;
    font-size: 1rem;
}

.btn-primary {
    background: white;
    color: #3b82f6;
}

.btn-primary:hover {
    background: #f8fafc;
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.2);
}

.btn-secondary {
    background: transparent;
    color: white;
    border-color: white;
}

.btn-secondary:hover {
    background: white;
    color: #3b82f6;
    transform: translateY(-2px);
}

.btn-outline {
    background: transparent;
    color: #3b82f6;
    border-color: #3b82f6;
}

.btn-outline:hover {
    background: #3b82f6;
    color: white;
}

/* ========================================
   Features Section
   ======================================== */

.features {
    padding: 6rem 0;
    background: white;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 3rem;
}

.feature-card {
    text-align: center;
    padding: 3rem 2rem;
    border-radius: 20px;
    background: #f8fafc;
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
    position: relative;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    border-color: #3b82f6;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1.5rem;
    display: block;
}

.feature-card h3 {
    color: #1f2937;
    margin-bottom: 1rem;
}

.feature-card p {
    margin-bottom: 2rem;
    line-height: 1.6;
}

.feature-link {
    color: #3b82f6;
    font-weight: 500;
    text-decoration: none;
    position: relative;
}

.feature-link::after {
    content: '→';
    margin-left: 0.5rem;
    transition: margin-left 0.3s ease;
}

.feature-link:hover::after {
    margin-left: 1rem;
}

/* ========================================
   Articles Section
   ======================================== */

.latest-articles {
    padding: 6rem 0;
    background: #f8fafc;
}

.articles-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.article-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    transition: all 0.3s ease;
    border: 1px solid #e2e8f0;
}

.article-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.article-image {
    height: 200px;
    background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.placeholder-image {
    font-size: 3rem;
    opacity: 0.5;
}

.article-content {
    padding: 2rem;
}

.article-category {
    background: #3b82f6;
    color: white;
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

.article-content h3 {
    margin: 1rem 0;
    color: #1f2937;
}

.article-content p {
    color: #6b7280;
    margin-bottom: 1.5rem;
}

.article-date {
    color: #9ca3af;
    font-size: 0.9rem;
}

.section-more {
    text-align: center;
}

/* ========================================
   Guide Page Styles
   ======================================== */

.guide-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 3rem;
    margin-bottom: 4rem;
}

.guide-section {
    background: white;
    padding: 2.5rem;
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
}

.guide-section h2 {
    color: #1f2937;
    border-bottom: 2px solid #e2e8f0;
    padding-bottom: 1rem;
    margin-bottom: 2rem;
}

.guide-content ul {
    list-style: none;
    padding: 0;
}

.guide-content li {
    margin-bottom: 1rem;
    padding-left: 1rem;
    position: relative;
}

.guide-content li::before {
    content: '•';
    color: #3b82f6;
    font-weight: bold;
    position: absolute;
    left: 0;
}

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

.info-card {
    background: #3b82f6;
    color: white;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
}

.info-card h3 {
    margin-bottom: 1.5rem;
    color: white;
}

.info-card p,
.info-card ul li {
    color: rgba(255, 255, 255, 0.9);
}

/* ========================================
   History Page Styles
   ======================================== */

.history-section {
    background: white;
    padding: 2.5rem;
    margin-bottom: 2rem;
    border-radius: 15px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border-left: 4px solid #3b82f6;
}

.history-section h2 {
    color: #1f2937;
    margin-bottom: 1rem;
}

/* ========================================
   Tourism Page Styles
   ======================================== */

.tourism-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.tourism-card {
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.tourism-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
}

.tourism-image {
    height: 200px;
    background: linear-gradient(135deg, #e2e8f0, #cbd5e1);
    display: flex;
    align-items: center;
    justify-content: center;
}

.tourism-content {
    padding: 2rem;
}

.tourism-category {
    background: #10b981;
    color: white;
    padding: 0.3rem 1rem;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
    display: inline-block;
    margin-bottom: 1rem;
}

.tourism-info {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    margin-top: 1rem;
    font-size: 0.9rem;
    color: #6b7280;
}

.seasonal-info {
    background: white;
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
}

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

.season-card {
    background: #f8fafc;
    padding: 2rem;
    border-radius: 15px;
    text-align: center;
    border: 1px solid #e2e8f0;
}

/* ========================================
   Articles Page Styles
   ======================================== */

.article-filters {
    margin-bottom: 3rem;
}

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

.filter-btn {
    padding: 0.8rem 1.5rem;
    border: 2px solid #e2e8f0;
    background: white;
    border-radius: 25px;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.filter-btn:hover,
.filter-btn.active {
    background: #3b82f6;
    color: white;
    border-color: #3b82f6;
}

.articles-list {
    display: grid;
    gap: 2rem;
    margin-bottom: 3rem;
}

.article-item {
    display: flex;
    background: white;
    border-radius: 15px;
    overflow: hidden;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    border: 1px solid #e2e8f0;
    transition: all 0.3s ease;
}

.article-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
}

.article-item .article-image {
    width: 200px;
    flex-shrink: 0;
}

.article-item .article-content {
    flex: 1;
}

.article-meta {
    display: flex;
    gap: 1rem;
    align-items: center;
    margin-top: 1rem;
}

.read-time {
    background: #f3f4f6;
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    color: #6b7280;
}

.pagination {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
}

.pagination-btn {
    padding: 0.8rem 1.5rem;
    border: 1px solid #e2e8f0;
    background: white;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.pagination-btn:hover:not(:disabled) {
    background: #3b82f6;
    color: white;
}

.pagination-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ========================================
   Back to Top Button
   ======================================== */

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: #3b82f6;
    color: white;
    border: none;
    border-radius: 50%;
    font-size: 1.2rem;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
    z-index: 1000;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: #2563eb;
    transform: translateY(-2px);
}

/* ========================================
   Footer
   ======================================== */

.footer {
    background: #1f2937;
    color: white;
    padding: 4rem 0 2rem;
}

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

.footer-section h4 {
    margin-bottom: 1rem;
    color: #f9fafb;
}

.footer-section p {
    color: #d1d5db;
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
}

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #d1d5db;
    transition: color 0.3s ease;
}

.footer-section ul li a:hover {
    color: #3b82f6;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 2rem;
    text-align: center;
}

.footer-bottom p {
    color: #9ca3af;
    margin: 0;
}

/* ========================================
   Responsive Design
   ======================================== */

@media (max-width: 768px) {
    .container {
        padding: 0 1rem;
    }

    .nav {
        display: none;
    }

    .mobile-menu-toggle {
        display: flex;
    }

    .hero {
        padding: 5rem 1rem 4rem;
    }

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

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

    .features-grid,
    .articles-grid,
    .guide-grid,
    .tourism-grid {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .feature-card {
        padding: 2rem 1.5rem;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .article-item {
        flex-direction: column;
    }

    .article-item .article-image {
        width: 100%;
        height: 200px;
    }

    .filter-buttons {
        justify-content: center;
    }

    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }

    .btn {
        padding: 0.8rem 1.5rem;
        font-size: 0.9rem;
    }

    .features,
    .latest-articles,
    .content-section {
        padding: 4rem 0;
    }

    .back-to-top {
        bottom: 1rem;
        right: 1rem;
        width: 45px;
        height: 45px;
    }
}