/*
Theme Name: さしみのブログ
Theme URI: https://www.naknaknak.com
Author: さしみ
Description: さしみのブログ オリジナルテーマ
Version: 1.0.0
*/

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@400;500&family=Inter:wght@400;500&display=swap');

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

:root {
  --color-bg:        #F8F6F2;
  --color-text:      #2C2C2A;
  --color-accent:    #0F6E56;
  --color-sub:       #888780;
  --color-border:    #D3D1C7;
  --color-card:      #FFFFFF;
  --color-accent-bg: #EAF3F0;
  --font-body: 'Inter', 'Noto Sans JP', sans-serif;
  --content-width: 680px;
  --radius: 6px;
}

html { font-size: 16px; scroll-behavior: smooth; }
body { font-family: var(--font-body); background-color: var(--color-bg); color: var(--color-text); line-height: 1.8; min-height: 100vh; }
a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; }

.l-inner { max-width: var(--content-width); margin-inline: auto; padding-inline: 16px; }

/* =============================================
   Header
   ============================================= */
.site-header { background-color: var(--color-bg); border-bottom: 1px solid var(--color-border); }
.site-header__top { max-width: var(--content-width); margin-inline: auto; padding: 20px 16px 0; }
.site-header__title { font-size: 18px; font-weight: 500; color: var(--color-text); letter-spacing: -0.01em; display: block; margin-bottom: 4px; }
.site-header__title:hover { opacity: 0.75; }
.site-header__tagline { font-size: 13px; color: var(--color-sub); display: block; margin-bottom: 16px; }
.site-nav { display: flex; flex-wrap: wrap; }
.site-nav__item { font-size: 14px; color: var(--color-text); padding: 8px 14px 10px; border-bottom: 2px solid transparent; margin-bottom: -1px; transition: color 0.15s, border-color 0.15s; font-weight: 400; line-height: 1; }
.site-nav__item:hover,
.site-nav__item.is-active { color: var(--color-accent); border-bottom-color: var(--color-accent); font-weight: 500; }

/* =============================================
   Badge
   ============================================= */
.badge { display: inline-block; font-size: 12px; font-weight: 500; padding: 2px 8px; border-radius: 3px; background-color: var(--color-accent-bg); color: var(--color-accent); line-height: 1.6; }

/* =============================================
   Home / Archive
   ============================================= */
.page-home { padding-top: 36px; padding-bottom: 60px; }
.filter-label { font-size: 13px; color: var(--color-sub); margin-bottom: 24px; }
.filter-label span { color: var(--color-accent); font-weight: 500; }
.article-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 24px; }

/* =============================================
   Card
   ============================================= */
.card { background-color: var(--color-card); border-radius: var(--radius); overflow: hidden; transition: opacity 0.15s; display: block; }
.card:hover { opacity: 0.85; }
.card__thumb { aspect-ratio: 16/9; overflow: hidden; background-color: var(--color-accent-bg); }
.card__thumb img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.3s ease; }
.card:hover .card__thumb img { transform: scale(1.03); }
.card__body { padding: 14px 16px 18px; }
.card__title { font-size: 15px; font-weight: 500; color: var(--color-text); margin: 8px 0 6px; line-height: 1.6; }
.card__date { font-size: 13px; color: var(--color-sub); display: block; }

/* =============================================
   Article page
   ============================================= */
.page-article { padding-top: 40px; padding-bottom: 80px; }
.back-link { font-size: 13px; color: var(--color-sub); display: inline-flex; align-items: center; gap: 4px; margin-bottom: 28px; transition: color 0.15s; }
.back-link:hover { color: var(--color-accent); }
.article-category { margin-bottom: 12px; }
.article-title { font-size: 24px; font-weight: 500; color: var(--color-text); line-height: 1.5; margin-bottom: 10px; }
.article-date { font-size: 13px; color: var(--color-sub); display: block; margin-bottom: 24px; }
.article-eyecatch { border-radius: var(--radius); overflow: hidden; background-color: var(--color-accent-bg); aspect-ratio: 16/9; margin-bottom: 36px; }
.article-eyecatch img { width: 100%; height: 100%; object-fit: cover; }

/* TOC */
.toc { border: 1px solid var(--color-border); border-radius: var(--radius); padding: 18px 20px; margin-bottom: 36px; background-color: var(--color-card); }
.toc__label { font-size: 13px; font-weight: 500; color: var(--color-sub); letter-spacing: 0.04em; margin-bottom: 10px; }
.toc__list { list-style: decimal; padding-left: 18px; }
.toc__list li { font-size: 14px; color: var(--color-accent); margin-bottom: 6px; line-height: 1.6; }
.toc__list a { color: var(--color-accent); }
.toc__list a:hover { text-decoration: underline; }

/* Body */
.article-body { color: var(--color-text); line-height: 1.8; }
.article-body h2 { font-size: 20px; font-weight: 500; border-left: 3px solid var(--color-accent); padding-left: 14px; margin: 44px 0 18px; line-height: 1.5; }
.article-body h3 { font-size: 17px; font-weight: 500; margin: 32px 0 12px; line-height: 1.5; }
.article-body p { font-size: 16px; margin-bottom: 20px; line-height: 1.8; }
.article-body img { border-radius: var(--radius); margin: 28px 0; width: 100%; object-fit: cover; }
.article-body ul,
.article-body ol { padding-left: 1.5em; margin-bottom: 20px; }
.article-body li { font-size: 16px; line-height: 1.8; margin-bottom: 4px; }
.article-body a { color: var(--color-accent); text-decoration: underline; }
.article-body blockquote { border-left: 3px solid var(--color-border); padding-left: 16px; color: var(--color-sub); margin: 24px 0; font-style: normal; }

/* Related */
.related { margin-top: 60px; }
.related__heading { font-size: 15px; font-weight: 500; color: var(--color-sub); border-bottom: 1px solid var(--color-border); padding-bottom: 12px; margin-bottom: 20px; letter-spacing: 0.04em; }
.related__grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px, 1fr)); gap: 16px; }
.related__item { display: block; }
.related__item:hover .related__thumb { opacity: 0.8; }
.related__thumb { aspect-ratio: 16/9; border-radius: 4px; overflow: hidden; background-color: var(--color-accent-bg); margin-bottom: 8px; transition: opacity 0.15s; }
.related__thumb img { width: 100%; height: 100%; object-fit: cover; }
.related__title { font-size: 13px; font-weight: 500; color: var(--color-text); margin: 6px 0 4px; line-height: 1.5; }
.related__date { font-size: 12px; color: var(--color-sub); display: block; }

/* =============================================
   固定ページ
   ============================================= */
.page-content { padding-top: 40px; padding-bottom: 80px; }
.page-content h1 { font-size: 24px; font-weight: 500; margin-bottom: 24px; line-height: 1.5; }
.page-content .entry-content h2 { font-size: 20px; font-weight: 500; border-left: 3px solid var(--color-accent); padding-left: 14px; margin: 40px 0 16px; }
.page-content .entry-content h3 { font-size: 17px; font-weight: 500; margin: 28px 0 10px; }
.page-content .entry-content p { font-size: 16px; margin-bottom: 20px; line-height: 1.8; }
.page-content .entry-content a { color: var(--color-accent); text-decoration: underline; }

/* =============================================
   Footer
   ============================================= */
.site-footer { border-top: 1px solid var(--color-border); margin-top: 80px; padding: 40px 16px; }
.site-footer__inner { max-width: var(--content-width); margin-inline: auto; }
.site-footer__name { font-size: 16px; font-weight: 500; color: var(--color-text); display: block; margin-bottom: 16px; }
.site-footer__name:hover { opacity: 0.75; }
.site-footer__links { display: flex; flex-wrap: wrap; gap: 8px 20px; list-style: none; margin-bottom: 16px; }
.site-footer__links a { font-size: 13px; color: var(--color-sub); transition: color 0.15s; }
.site-footer__links a:hover { color: var(--color-accent); }
.site-footer__copy { font-size: 12px; color: var(--color-sub); }

/* =============================================
   Responsive
   ============================================= */
@media (min-width: 640px) {
  .l-inner,
  .site-header__top,
  .site-footer__inner { padding-inline: 32px; }
}

@media (max-width: 480px) {
  .article-title { font-size: 20px; }
  .article-body h2 { font-size: 18px; }
  .related__grid { grid-template-columns: 1fr 1fr; }
}