/*
Theme Name: YS Office
Theme URI: https://ysoffice.blog/
Author: YS Office / 島田大和
Description: 白基調のミニマルな個人ブログテーマ。ガジェット、暮らし、旅、AI自動化向け。
Version: 1.0.0
Requires at least: 6.0
Tested up to: 6.5
Requires PHP: 7.4
Text Domain: ysoffice
*/

:root {
  --bg: #ffffff;
  --ink: #111827;
  --muted: #6b7280;
  --line: #e5e7eb;
  --soft: #f7faf9;
  --accent: #16b8a6;
  --accent-dark: #0f8f82;
  --max: 1120px;
}
* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background: var(--bg);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", "Noto Sans JP", "Hiragino Kaku Gothic ProN", Meiryo, sans-serif;
  line-height: 1.75;
}
img { max-width: 100%; height: auto; display: block; }
a { color: inherit; text-decoration: none; }
.site-header { position: sticky; top: 0; z-index: 10; background: rgba(255,255,255,.92); border-bottom: 1px solid var(--line); backdrop-filter: blur(14px); }
.header-inner { max-width: var(--max); margin: 0 auto; padding: 18px 20px; display: flex; align-items: center; gap: 26px; }
.brand { display: flex; align-items: center; gap: 10px; font-weight: 800; letter-spacing: .01em; white-space: nowrap; }
.brand img { width: 38px; height: 38px; }
.nav { display: flex; gap: 18px; margin-left: auto; font-size: 14px; color: #374151; }
.nav li, .footer-links li { list-style: none; }
.nav a:hover, .footer-links a:hover { color: var(--accent-dark); }
.search { width: 190px; border: 1px solid var(--line); border-radius: 999px; padding: 9px 14px; color: var(--muted); font-size: 13px; background: var(--soft); }
.container { max-width: var(--max); margin: 0 auto; padding: 0 20px; }
.hero { padding: 52px 20px 34px; }
.hero-grid { max-width: var(--max); margin: 0 auto; display: grid; grid-template-columns: 1.05fr .95fr; gap: 42px; align-items: center; }
.eyebrow { color: var(--accent-dark); font-size: 13px; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
h1, h2, h3 { line-height: 1.35; letter-spacing: 0; }
.hero h1 { margin: 12px 0 16px; font-size: clamp(34px, 5vw, 58px); }
.lead { color: #4b5563; font-size: 17px; margin: 0; }
.hero-card img { border-radius: 8px; border: 1px solid var(--line); box-shadow: 0 18px 42px rgba(17, 24, 39, .08); }
.section { padding: 34px 0; }
.section-head { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 18px; }
.section h2 { margin: 0; font-size: 26px; }
.section-note { margin: 4px 0 0; color: var(--muted); font-size: 14px; }
.grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 22px; }
.grid.two { grid-template-columns: repeat(2, 1fr); }
.post-card { display: block; }
.post-card img { aspect-ratio: 16/9; object-fit: cover; border-radius: 8px; border: 1px solid var(--line); background: var(--soft); transition: transform .2s ease, box-shadow .2s ease; }
.post-card:hover img { transform: translateY(-2px); box-shadow: 0 14px 30px rgba(17,24,39,.08); }
.meta { display: flex; gap: 10px; align-items: center; color: var(--muted); font-size: 12px; margin: 12px 0 6px; }
.cat { color: var(--accent-dark); font-weight: 800; }
.post-card h3 { margin: 0; font-size: 18px; }
.post-card p { margin: 8px 0 0; color: var(--muted); font-size: 14px; }
.popular { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px 28px; counter-reset: rank; border-top: 1px solid var(--line); }
.popular a { counter-increment: rank; display: grid; grid-template-columns: 42px 1fr; gap: 12px; padding: 18px 0; border-bottom: 1px solid var(--line); }
.popular a:before { content: counter(rank, decimal-leading-zero); color: var(--accent); font-weight: 800; font-size: 20px; }
.series { margin: 36px 0 8px; padding: 28px; border: 1px solid var(--line); border-radius: 8px; background: var(--soft); display: grid; grid-template-columns: 1fr 260px; gap: 24px; align-items: center; }
.button { display: inline-block; margin-top: 16px; padding: 10px 16px; border-radius: 999px; background: var(--ink); color: #fff; font-weight: 700; font-size: 14px; }
.site-footer { margin-top: 44px; border-top: 1px solid var(--line); background: #fafafa; }
.footer-inner { max-width: var(--max); margin: 0 auto; padding: 34px 20px; display: flex; justify-content: space-between; gap: 20px; color: var(--muted); font-size: 14px; }
.footer-links { display: flex; gap: 16px; }
.screen-reader-text { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
.nav .current-menu-item a, .nav .current-cat a { color: var(--accent-dark); font-weight: 700; }
.nav ul, .footer-links ul { display: flex; gap: inherit; margin: 0; padding: 0; }
.page-numbers { display: inline-block; margin: 28px 4px 0 0; padding: 6px 10px; border: 1px solid var(--line); border-radius: 8px; color: #374151; }
.page-numbers.current { background: var(--ink); color: #fff; border-color: var(--ink); }
.article { max-width: 820px; margin: 0 auto; padding: 42px 20px 0; }
.article-header h1 { margin: 12px 0 14px; font-size: clamp(30px, 5vw, 48px); }
.article-eyecatch { margin: 28px 0; border-radius: 8px; border: 1px solid var(--line); }
.toc { border: 1px solid var(--line); border-radius: 8px; padding: 18px 22px; background: var(--soft); margin: 26px 0 34px; }
.toc strong { display: block; margin-bottom: 8px; }
.toc a { display: block; color: #374151; padding: 3px 0; }
.article-body h2 { margin-top: 38px; font-size: 25px; }
.article-body p { margin: 18px 0; }
.related { max-width: var(--max); margin: 42px auto 0; padding: 0 20px; }
@media (max-width: 860px) {
  .header-inner { flex-wrap: wrap; gap: 12px; }
  .nav { order: 3; width: 100%; overflow-x: auto; margin-left: 0; padding-bottom: 2px; }
  .search { margin-left: auto; width: 150px; }
  .hero-grid, .series { grid-template-columns: 1fr; }
  .grid, .grid.two, .popular { grid-template-columns: 1fr; }
  .hero { padding-top: 36px; }
  .footer-inner { display: block; }
  .footer-links { margin-top: 12px; flex-wrap: wrap; }
}
@media (max-width: 520px) {
  .header-inner, .container, .hero, .article, .related { padding-left: 16px; padding-right: 16px; }
  .brand span { font-size: 15px; }
  .search { width: 128px; }
  .hero h1 { font-size: 34px; }
  .section h2 { font-size: 23px; }
  .series { padding: 20px; }
}