/*
Theme Name: Shizuku Blog
Theme URI: https://example.com/shizuku-blog
Author: OpenAI
Description: A quiet, single-column blog theme with adjustable accent color and logo.
Version: 1.0.0
Requires at least: 6.0
Requires PHP: 7.4
Text Domain: shizuku-blog
*/

:root {
  --sb-bg: #f4f5f8;
  --sb-paper: #fff;
  --sb-ink: #252733;
  --sb-muted: #777c8b;
  --sb-line: #e7e9ef;
  --sb-accent: #6658e8;
  --sb-accent-soft: #f0efff;
  --sb-width: 760px;
  --sb-radius: 20px;
  --sb-shadow: 0 14px 44px rgba(43, 50, 80, .045);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--sb-bg);
  color: var(--sb-ink);
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Hiragino Kaku Gothic ProN", "Yu Gothic", Meiryo, sans-serif;
  font-size: 17px;
  line-height: 1.85;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
a { color: inherit; text-decoration-color: var(--sb-accent); text-underline-offset: .2em; }
a:hover { color: var(--sb-accent); }
button, input { font: inherit; }

.sb-shell { width: min(100% - 40px, var(--sb-width)); margin-inline: auto; }
.site-header { padding: 28px 0 18px; }
.header-inner { display: flex; align-items: center; justify-content: space-between; gap: 28px; }
.site-branding { min-width: 0; display: flex; align-items: center; gap: 13px; }
.custom-logo-link { display: inline-flex; flex: 0 0 auto; }
.custom-logo { display: block; width: auto; max-width: 180px; max-height: 56px; object-fit: contain; }
.site-title { margin: 0; font-size: 1.35rem; line-height: 1.35; font-weight: 700; letter-spacing: -.035em; }
.site-title a { text-decoration: none; }
.site-description { margin: 3px 0 0; color: var(--sb-muted); font-size: .85rem; line-height: 1.5; }
.header-tools { display: flex; align-items: center; justify-content: flex-end; gap: 20px; }
.main-navigation ul, .footer-navigation ul { display: flex; align-items: center; gap: 20px; margin: 0; padding: 0; list-style: none; }
.main-navigation a, .footer-navigation a { color: var(--sb-muted); font-size: .88rem; text-decoration: none; }
.main-navigation a:hover, .footer-navigation a:hover { color: var(--sb-accent); }
.search-toggle { border: 0; padding: 5px 0; color: var(--sb-muted); background: transparent; font-size: .88rem; cursor: pointer; }
.search-toggle:hover { color: var(--sb-accent); }
.header-search { padding: 0 0 18px; }
.header-search[hidden] { display: none; }
.search-form { display: flex; gap: 8px; }
.search-field { min-width: 0; flex: 1; border: 1px solid var(--sb-line); border-radius: 12px; padding: 10px 14px; background: var(--sb-paper); color: var(--sb-ink); }
.search-submit { border: 0; border-radius: 12px; padding: 9px 17px; background: var(--sb-accent); color: #fff; cursor: pointer; }
.search-submit:hover { filter: brightness(.94); }

.site-main { min-height: 50vh; padding: 20px 0 70px; }
.post-list, .single-card, .page-card, .archive-card { overflow: hidden; border: 1px solid var(--sb-line); border-radius: var(--sb-radius); background: var(--sb-paper); box-shadow: var(--sb-shadow); }
.post-list { list-style: none; margin: 0; padding: 0; }
.post-list-item + .post-list-item { border-top: 1px solid var(--sb-line); }
.post-list-link { display: flex; align-items: baseline; justify-content: space-between; gap: 24px; min-height: 78px; padding: 20px 26px; text-decoration: none; }
.post-list-title { font-size: 1.05rem; font-weight: 550; line-height: 1.6; }
.post-list-date, .entry-date { flex: 0 0 auto; color: var(--sb-muted); font-size: .83rem; font-variant-numeric: tabular-nums; }
.post-list-link:hover { background: #fbfaff; }

.single-card, .page-card, .archive-card { padding: clamp(26px, 6vw, 56px); }
.entry-header { margin-bottom: 34px; }
.entry-title { margin: 0; font-size: clamp(1.75rem, 4vw, 2.35rem); line-height: 1.45; letter-spacing: -.035em; font-weight: 700; }
.entry-date { display: block; margin-top: 10px; }
.entry-content { overflow-wrap: break-word; }
.entry-content > :first-child { margin-top: 0; }
.entry-content > :last-child { margin-bottom: 0; }
.entry-content p { margin: 0 0 1.45em; }
.entry-content h2 { margin: 2.2em 0 .75em; font-size: 1.55rem; line-height: 1.5; }
.entry-content h3 { margin: 2em 0 .7em; font-size: 1.25rem; line-height: 1.55; }
.entry-content h4 { margin: 1.8em 0 .6em; font-size: 1.08rem; }
.entry-content ul, .entry-content ol { padding-left: 1.5em; margin: 0 0 1.5em; }
.entry-content blockquote { margin: 1.8em 0; border-left: 3px solid var(--sb-accent); padding: .1em 0 .1em 1.2em; color: var(--sb-muted); }
.entry-content img, .entry-content video { height: auto; max-width: 100%; border-radius: 10px; }
.entry-content figure { margin: 1.8em 0; }
.entry-content figcaption { color: var(--sb-muted); font-size: .85rem; text-align: center; }
.entry-content pre { overflow-x: auto; border-radius: 12px; padding: 18px; background: #f4f5f8; font-size: .88rem; line-height: 1.65; }
.entry-content code { border-radius: 4px; padding: .1em .3em; background: #f2f2f7; font-size: .9em; }
.entry-content pre code { padding: 0; background: transparent; }
.entry-content table { width: 100%; border-collapse: collapse; margin: 1.5em 0; font-size: .92rem; }
.entry-content th, .entry-content td { border: 1px solid var(--sb-line); padding: 9px 12px; text-align: left; }
.entry-content th { background: #f8f8fb; }
.entry-content hr { border: 0; border-top: 1px solid var(--sb-line); margin: 2.5em 0; }
.post-navigation { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-top: 26px; }
.post-navigation a { min-height: 66px; display: flex; flex-direction: column; justify-content: center; padding: 13px 18px; border: 1px solid var(--sb-line); border-radius: 14px; background: var(--sb-paper); text-decoration: none; }
.post-navigation .nav-next { text-align: right; }
.nav-label { color: var(--sb-muted); font-size: .75rem; }
.nav-title { overflow: hidden; color: var(--sb-ink); font-size: .9rem; text-overflow: ellipsis; white-space: nowrap; }
.post-navigation a:hover .nav-title { color: var(--sb-accent); }

.archive-heading { margin: 0 0 22px; font-size: 1.4rem; line-height: 1.5; }
.archive-heading small { display: block; color: var(--sb-muted); font-size: .8rem; font-weight: 400; }
.pagination { display: flex; justify-content: center; gap: 8px; margin-top: 26px; }
.pagination .page-numbers { min-width: 42px; padding: 7px 12px; border: 1px solid var(--sb-line); border-radius: 10px; background: var(--sb-paper); text-align: center; text-decoration: none; font-size: .9rem; }
.pagination .current { background: var(--sb-accent); border-color: var(--sb-accent); color: #fff; }
.no-results { padding: 35px; color: var(--sb-muted); text-align: center; }

.site-footer { padding: 0 0 38px; color: var(--sb-muted); font-size: .84rem; }
.footer-inner { border-top: 1px solid #dfe1e8; padding-top: 22px; }
.footer-top { display: flex; flex-wrap: wrap; justify-content: space-between; align-items: flex-start; gap: 20px; }
.footer-navigation ul { gap: 18px; }
.monthly-archives { margin-top: 15px; }
.monthly-archives summary { width: fit-content; color: var(--sb-muted); font-size: .82rem; cursor: pointer; }
.monthly-archives summary:hover { color: var(--sb-accent); }
.monthly-archives ul { display: flex; flex-wrap: wrap; gap: 8px 16px; list-style: none; margin: 10px 0 0; padding: 0; }
.monthly-archives a { font-size: .82rem; text-decoration: none; }
.site-credit { margin: 20px 0 0; font-size: .78rem; }

@media (max-width: 640px) {
  body { font-size: 16px; }
  .sb-shell { width: min(100% - 28px, var(--sb-width)); }
  .site-header { padding-top: 20px; }
  .header-inner { align-items: flex-start; flex-direction: column; gap: 13px; }
  .header-tools { width: 100%; justify-content: space-between; gap: 12px; }
  .main-navigation ul { gap: 15px; }
  .post-list-link { min-height: 70px; padding: 16px 18px; gap: 12px; }
  .post-list-title { font-size: .98rem; }
  .post-list-date { font-size: .75rem; }
  .site-main { padding-top: 12px; }
  .post-navigation { gap: 8px; }
  .post-navigation a { padding: 10px 12px; }
  .footer-top { flex-direction: column; gap: 12px; }
}
@media (max-width: 390px) {
  .post-list-link { align-items: flex-start; flex-direction: column; gap: 3px; }
  .post-navigation { grid-template-columns: 1fr; }
}