/* Reset & Base */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Hiragino Kaku Gothic ProN", "Noto Sans JP", Roboto, sans-serif;
    line-height: 1.8;
    color: #333;
    background: #fafafa;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 1rem;
}

a { color: #2c7be5; text-decoration: none; }
a:hover { text-decoration: underline; }

/* Header */
.site-header {
    background: #fff;
    border-bottom: 1px solid #e0e0e0;
    padding: 1rem 0;
}

.site-header .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.site-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: #333;
}
.site-title:hover { text-decoration: none; }

.site-nav a {
    margin-left: 1.5rem;
    color: #555;
    font-size: 0.95rem;
}

/* Blog List */
.blog-list { padding: 2rem 0; }
.blog-list h1 { font-size: 1.5rem; margin-bottom: 1.5rem; }

.post-card {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    padding: 1.25rem;
    margin-bottom: 1.25rem;
}

.post-card h2 { font-size: 1.2rem; margin-bottom: 0.5rem; }
.post-card h2 a { color: #333; }
.post-card h2 a:hover { color: #2c7be5; }

.post-meta {
    font-size: 0.85rem;
    color: #888;
    margin-bottom: 0.5rem;
}

.post-meta time { margin-right: 0.75rem; }

.post-category a {
    color: #666;
    border: 1px solid #ddd;
    padding: 0.1rem 0.4rem;
    border-radius: 3px;
    font-size: 0.8rem;
}

.post-tags { margin: 0.5rem 0; }

.tag {
    display: inline-block;
    background: #e8f4fd;
    color: #2c7be5;
    padding: 0.1rem 0.5rem;
    border-radius: 3px;
    font-size: 0.8rem;
    margin-right: 0.3rem;
    margin-bottom: 0.3rem;
}
.tag:hover { background: #d0eafb; text-decoration: none; }

.post-excerpt {
    font-size: 0.95rem;
    color: #555;
    margin: 0.5rem 0;
}

.read-more {
    font-size: 0.9rem;
    font-weight: 600;
}

/* Pagination */
.pagination {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    align-items: center;
    margin-top: 2rem;
    flex-wrap: wrap;
}

.pagination a, .pagination span {
    display: inline-block;
    padding: 0.4rem 0.75rem;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 0.9rem;
}

.pagination a:hover { background: #f0f0f0; text-decoration: none; }
.pagination-current { background: #2c7be5; color: #fff; border-color: #2c7be5; }

/* Post Detail */
.post-detail { padding: 2rem 0; }
.post-header { margin-bottom: 2rem; }
.post-header h1 { font-size: 1.8rem; line-height: 1.4; margin-bottom: 0.5rem; }

.post-body {
    font-size: 1rem;
    line-height: 1.9;
}

.post-body h2 { font-size: 1.4rem; margin: 2rem 0 0.75rem; padding-bottom: 0.25rem; border-bottom: 1px solid #eee; }
.post-body h3 { font-size: 1.2rem; margin: 1.5rem 0 0.5rem; }
.post-body p { margin-bottom: 1rem; }
.post-body ul, .post-body ol { margin: 0.5rem 0 1rem 1.5rem; }
.post-body li { margin-bottom: 0.3rem; }
.post-body img { max-width: 100%; height: auto; border-radius: 4px; margin: 1rem 0; }
.post-body blockquote {
    border-left: 4px solid #ddd;
    padding: 0.5rem 1rem;
    margin: 1rem 0;
    background: #f9f9f9;
    color: #555;
}
.post-body code {
    background: #f4f4f4;
    padding: 0.15rem 0.35rem;
    border-radius: 3px;
    font-size: 0.9em;
}
.post-body pre {
    background: #1e1e1e;
    color: #d4d4d4;
    padding: 1rem;
    border-radius: 6px;
    overflow-x: auto;
    margin: 1rem 0;
}
.post-body pre code {
    background: none;
    padding: 0;
    color: inherit;
}
.post-body table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    font-size: 0.95rem;
}
.post-body th, .post-body td {
    border: 1px solid #ddd;
    padding: 0.5rem 0.75rem;
    text-align: left;
}
.post-body th {
    background: #f8f9fa;
    font-weight: 600;
}
.post-body tr:nth-child(even) {
    background: #fafafa;
}

/* Back link */
.back-link {
    margin: 2rem 0;
    font-size: 0.95rem;
}

/* Search */
.search-page { padding: 2rem 0; }
.search-page h1 { font-size: 1.5rem; margin-bottom: 1rem; }

#search-input {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 2px solid #ddd;
    border-radius: 6px;
    outline: none;
    font-family: inherit;
}
#search-input:focus { border-color: #2c7be5; }

#search-results { margin-top: 1.5rem; }

.search-result-item {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 6px;
    padding: 1rem;
    margin-bottom: 0.75rem;
}
.search-result-item h3 { font-size: 1.1rem; margin-bottom: 0.25rem; }
.search-result-item h3 a { color: #333; }
.search-result-item .meta { font-size: 0.8rem; color: #888; margin-bottom: 0.25rem; }
.search-result-item .excerpt { font-size: 0.9rem; color: #555; }

.search-count { font-size: 0.9rem; color: #666; margin-bottom: 1rem; }

/* 404 */
.error-page { padding: 4rem 0; text-align: center; }
.error-page h1 { font-size: 2rem; margin-bottom: 1rem; color: #999; }
.error-page p { margin-bottom: 1.5rem; color: #666; }

/* Footer */
.site-footer {
    border-top: 1px solid #e0e0e0;
    padding: 1.5rem 0;
    margin-top: 3rem;
    font-size: 0.85rem;
    color: #999;
    text-align: center;
}