/*
Theme Name: Zuola Weblog
Theme URI: https://www.zuola.com/weblog/
Author: Zola
Description: 佐拉網絡日誌的獨立自訂主題。與 WordPress 官方主題分離，避免更新時被覆蓋。
Version: 1.0.0
Requires at least: 6.5
Requires PHP: 8.1
Text Domain: zuola-weblog
Update URI: false
*/

:root {
  --zuola-navy-950: #071b2b;
  --zuola-navy-900: #0b2942;
  --zuola-navy-800: #153f63;
  --zuola-blue-700: #1d4f7a;
  --zuola-orange-700: #c2410c;
  --zuola-orange-500: #f97316;
  --zuola-slate-950: #0f172a;
  --zuola-slate-700: #334155;
  --zuola-slate-600: #475569;
  --zuola-slate-500: #64748b;
  --zuola-slate-300: #cbd5e1;
  --zuola-slate-200: #e2e8f0;
  --zuola-slate-100: #f1f5f9;
  --zuola-slate-50: #f8fafc;
  --zuola-shadow: 0 18px 45px rgba(15, 23, 42, 0.09);
}

html { scroll-behavior: smooth; }
*, *::before, *::after { box-sizing: border-box; }
body {
  background: #fff;
  color: var(--zuola-slate-700);
  font-family: Inter, "Noto Sans TC", "PingFang TC", "Segoe UI", "Helvetica Neue", Arial, sans-serif;
  font-size: 16.5px;
  line-height: 1.8;
  margin: 0;
  min-width: 0;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}
body.nav-open { overflow: hidden; }
a { color: var(--zuola-blue-700); text-decoration-color: rgba(29, 79, 122, .28); text-underline-offset: 4px; transition: color 200ms ease, border-color 200ms ease, background 200ms ease, transform 200ms ease; }
a:hover { color: var(--zuola-orange-700); }
a:focus-visible, button:focus-visible, input:focus-visible, textarea:focus-visible { outline: 2px solid var(--zuola-blue-700); outline-offset: 3px; }
button, input, textarea { font: inherit; }
img, iframe, video { height: auto; max-width: 100%; }
h1, h2, h3, h4, h5, h6 { color: var(--zuola-slate-950); font-weight: 700; letter-spacing: -.025em; line-height: 1.22; }
p { margin: 1.15em 0; }
.site-shell { margin: 0 auto; max-width: 1200px; padding-left: 40px; padding-right: 40px; width: 100%; }
.screen-reader-text { clip: rect(1px, 1px, 1px, 1px); clip-path: inset(50%); height: 1px; overflow: hidden; position: absolute !important; width: 1px; word-wrap: normal !important; }
.skip-link { background: var(--zuola-slate-950); border-radius: 8px; color: #fff; left: 16px; padding: 8px 16px; position: fixed; text-decoration: none; top: 12px; transform: translateY(-100px); transition: transform 200ms ease; z-index: 10000; }
.skip-link:focus { color: #fff; transform: translateY(0); }

.site-header { background: rgba(255, 255, 255, .95); border-bottom: 1px solid var(--zuola-slate-200); box-shadow: 0 1px 2px rgba(15, 23, 42, .05); position: sticky; top: 0; z-index: 999; -webkit-backdrop-filter: blur(14px); backdrop-filter: blur(14px); }
.admin-bar .site-header { top: 32px; }
.site-nav { align-items: center; display: flex; gap: 20px; justify-content: space-between; min-height: 74px; }
.brand-link { align-items: center; color: var(--zuola-slate-950); display: flex; flex-shrink: 0; gap: 12px; text-decoration: none; }
.brand-link:hover { color: var(--zuola-slate-950); }
.brand-logo { display: block; height: 48px; object-fit: contain; width: 48px; }
.brand-title { color: var(--zuola-slate-950); font-size: clamp(18px, 5.75vw, 22.4px); font-weight: 700; line-height: 1.25; white-space: nowrap; }
.nav-toggle { align-items: center; background: transparent; border: 1px solid var(--zuola-slate-300); border-radius: 8px; color: var(--zuola-slate-700); display: none; height: 44px; justify-content: center; padding: 0; width: 44px; }
.nav-toggle-lines { background: currentColor; display: block; height: 2px; position: relative; width: 20px; }
.nav-toggle-lines::before, .nav-toggle-lines::after { background: currentColor; content: ""; height: 2px; left: 0; position: absolute; width: 20px; }
.nav-toggle-lines::before { top: -6px; }
.nav-toggle-lines::after { top: 6px; }
.nav-menu { display: flex; }
.nav-list { align-items: center; display: flex; gap: 4px; list-style: none; margin: 0; padding: 0; }
.nav-list li { margin: 0; padding: 0; }
.nav-link { align-items: center; border-bottom: 2px solid transparent; border-radius: 8px; color: var(--zuola-slate-700); display: flex; font-size: 14.5px; font-weight: 600; line-height: 1; min-height: 44px; padding: 8px 10px; text-decoration: none; }
.nav-link:hover { background: var(--zuola-slate-50); border-color: var(--zuola-orange-500); color: var(--zuola-navy-900); }
.nav-link[aria-current="page"] { background: #dbeafe; border-color: var(--zuola-navy-800); box-shadow: 0 1px 2px rgba(15, 23, 42, .08); color: var(--zuola-navy-950); }

.blog-main { min-height: 55vh; }
.blog-section { background: var(--zuola-slate-50); border-bottom: 1px solid var(--zuola-slate-200); padding: 76px 0 96px; }
.blog-heading { align-items: end; display: flex; gap: 24px; justify-content: space-between; margin-bottom: 34px; }
.blog-heading-copy { max-width: 760px; }
.section-label { color: var(--zuola-orange-700); font-size: 13px; font-weight: 800; letter-spacing: .15em; margin: 0 0 10px; text-transform: uppercase; }
.page-title { font-size: clamp(2.35rem, 6vw, 4.25rem); margin: 0; }
.page-intro { color: var(--zuola-slate-600); font-size: clamp(1.05rem, 2vw, 1.2rem); line-height: 1.75; margin: 16px 0 0; max-width: 68ch; }
.blog-total-views { align-items: baseline; color: var(--zuola-slate-600); display: flex; flex-wrap: wrap; font-size: 14px; gap: 5px; margin: 18px 0 0; }
.blog-total-views strong { color: var(--zuola-navy-800); font-size: 1.35rem; font-variant-numeric: tabular-nums; letter-spacing: -.02em; }
.archive-title { font-size: clamp(2rem, 5vw, 3.2rem); margin: 0; }
.post-grid { display: grid; gap: 28px; grid-template-columns: repeat(2, minmax(0, 1fr)); }
.post-card { background: #fff; border: 1px solid var(--zuola-slate-200); border-radius: 16px; box-shadow: 0 8px 30px rgba(15, 23, 42, .055); display: flex; flex-direction: column; min-width: 0; overflow: hidden; position: relative; transition: border-color 200ms ease, box-shadow 200ms ease, transform 200ms ease; }
.post-card:hover, .post-card:focus-within { border-color: #93c5fd; box-shadow: var(--zuola-shadow); transform: translateY(-2px); }
.post-card-media { aspect-ratio: 16 / 9; background: var(--zuola-navy-900); overflow: hidden; }
.post-card-media img { height: 100%; object-fit: cover; transition: transform 300ms ease; width: 100%; }
.post-card:hover .post-card-media img { transform: scale(1.025); }
.post-card-body { display: flex; flex: 1; flex-direction: column; padding: 26px; }
.post-card-meta, .entry-meta { align-items: center; color: var(--zuola-slate-500); display: flex; flex-wrap: wrap; font-size: 14px; gap: 6px 14px; line-height: 1.55; margin: 0 0 12px; }
.post-heat { align-items: center; color: var(--zuola-orange-700); display: inline-flex; font-weight: 700; gap: 5px; }
.post-heat::before { content: "●"; font-size: 9px; }
.post-card-title { font-size: clamp(1.2rem, 2vw, 1.5rem); line-height: 1.4; margin: 0; }
.post-card-title a { color: var(--zuola-slate-950); text-decoration: none; }
.post-card-title a::after { content: ""; inset: 0; position: absolute; z-index: 1; }
.post-card-excerpt { color: var(--zuola-slate-600); line-height: 1.75; margin: 14px 0 0; }
.post-card-excerpt p { margin: 0; }
.post-card-more { color: var(--zuola-blue-700); font-size: 14px; font-weight: 700; margin-top: auto; padding-top: 20px; }
.post-card-meta a, .post-card-more { position: relative; z-index: 2; }
.pagination { display: flex; justify-content: center; margin-top: 44px; }
.nav-links { display: flex; flex-wrap: wrap; gap: 8px; justify-content: center; }
.page-numbers { align-items: center; background: #fff; border: 1px solid var(--zuola-slate-300); border-radius: 8px; color: var(--zuola-slate-700); display: inline-flex; justify-content: center; min-height: 44px; min-width: 44px; padding: 8px 14px; text-decoration: none; }
.page-numbers.current { background: var(--zuola-navy-800); border-color: var(--zuola-navy-800); color: #fff; }
.pagination-mobile { display: none; }

.single-section { padding: 72px 0 96px; }
.single-article { margin: 0 auto; max-width: 820px; }
.single-header { border-bottom: 1px solid var(--zuola-slate-200); margin-bottom: 34px; padding-bottom: 28px; }
.single-title { font-size: clamp(2.25rem, 6vw, 4rem); margin: 0; overflow-wrap: anywhere; }
.single-header .entry-meta { margin: 18px 0 0; }
.single-featured { border-radius: 16px; margin: 0 0 38px; overflow: hidden; }
.single-featured img { display: block; width: 100%; }
.entry-content { color: var(--zuola-slate-700); font-size: 17px; line-height: 1.85; overflow-wrap: anywhere; }
.entry-content > :first-child { margin-top: 0; }
.entry-content h2 { font-size: 2rem; margin-top: 2em; }
.entry-content h3 { font-size: 1.5rem; margin-top: 1.8em; }
.entry-content img { border-radius: 12px; }
.entry-content iframe, .entry-content table, .entry-content pre { max-width: 100%; }
.entry-content pre { overflow-x: auto; }
.entry-content blockquote { background: var(--zuola-slate-50); border-left: 4px solid var(--zuola-navy-800); border-radius: 0 12px 12px 0; margin: 28px 0; padding: 18px 24px; }
.entry-content a { overflow-wrap: anywhere; }
.post-navigation { border-top: 1px solid var(--zuola-slate-200); margin-top: 52px; padding-top: 28px; }
.post-navigation .nav-links { display: grid; gap: 32px; grid-template-columns: repeat(2, minmax(0, 1fr)); justify-content: stretch; }
.post-navigation a { color: var(--zuola-slate-950); display: block; font-weight: 700; line-height: 1.55; text-decoration: none; }
.post-navigation a span { color: var(--zuola-slate-500); display: block; font-size: 13px; font-weight: 700; letter-spacing: .08em; margin-bottom: 8px; }
.post-navigation .nav-prev { grid-column: 1; text-align: left; }
.post-navigation .nav-next { grid-column: 2; text-align: right; }
.comments-area { border-top: 1px solid var(--zuola-slate-200); margin-top: 48px; padding-top: 32px; }
.comment-list { list-style: none; padding: 0; }
.comment-body { background: var(--zuola-slate-50); border: 1px solid var(--zuola-slate-200); border-radius: 12px; margin: 18px 0; padding: 20px; }
input[type="search"], input[type="text"], input[type="email"], input[type="url"], textarea { background: #fff; border: 1px solid var(--zuola-slate-300); border-radius: 8px; color: var(--zuola-slate-950); font-size: 16px; min-height: 44px; padding: 10px 12px; width: 100%; }
.button-primary, input[type="submit"] { align-items: center; background: #c2410c; border: 1px solid #c2410c; border-radius: 8px; color: #fff; display: inline-flex; font-size: 15px; font-weight: 700; justify-content: center; min-height: 48px; padding: 10px 24px; text-decoration: none; }
.button-primary:hover, input[type="submit"]:hover { background: #9a3412; border-color: #9a3412; color: #fff; }
.empty-state { background: #fff; border: 1px dashed var(--zuola-slate-300); border-radius: 16px; padding: 48px 28px; text-align: center; }
.related-posts { border-top: 1px solid var(--zuola-slate-200); margin-top: 56px; padding-top: 40px; }
.related-posts-heading { margin-bottom: 24px; }
.related-posts-heading h2 { font-size: clamp(1.75rem, 3vw, 2.25rem); margin: 0; }
.related-posts-grid { display: grid; gap: 20px; grid-template-columns: repeat(4, minmax(0, 1fr)); }
.related-post-card { background: #fff; border: 1px solid var(--zuola-slate-200); border-radius: 14px; box-shadow: 0 6px 22px rgba(15, 23, 42, .05); color: var(--zuola-slate-950); display: block; overflow: hidden; text-decoration: none; transition: border-color 200ms ease, box-shadow 200ms ease, transform 200ms ease; }
.related-post-card:hover, .related-post-card:focus-visible { border-color: #93c5fd; box-shadow: var(--zuola-shadow); color: var(--zuola-navy-900); transform: translateY(-2px); }
.related-post-image { aspect-ratio: 16 / 10; background: var(--zuola-slate-100); margin: 0; overflow: hidden; }
.related-post-image img { height: 100%; object-fit: cover; transition: transform 300ms ease; width: 100%; }
.related-post-card:hover .related-post-image img { transform: scale(1.035); }
.related-post-card h3 { font-size: 1rem; line-height: 1.5; margin: 0; padding: 18px; }

.final-cta { background: var(--zuola-navy-900); color: #fff; padding: 72px 0; }
.final-cta-inner { align-items: center; display: flex; gap: 40px; justify-content: space-between; margin: 0 auto; max-width: 1200px; padding: 0 40px; }
.final-cta-copy { max-width: 570px; }
.final-cta h2 { color: #fff; font-size: clamp(2rem, 4vw, 2.6rem); margin: 0; }
.final-cta p { color: var(--zuola-slate-300); margin: 12px 0 0; }
.newsletter-form { max-width: 520px; width: 100%; }
.newsletter-label { color: #fff; display: block; font-size: 14px; font-weight: 700; margin-bottom: 8px; }
.newsletter-fields { align-items: stretch; display: flex; gap: 12px; }
.newsletter-fields input[type="email"] { flex: 1 1 auto; height: 56px; margin: 0; min-width: 0; }
.newsletter-fields .button-primary { flex: 0 0 auto; height: 56px; white-space: nowrap; }
.newsletter-note { color: var(--zuola-slate-300); font-size: 14px; line-height: 1.6; margin: 10px 0 0; }
.newsletter-note a { color: #fff; }
.site-footer { background: var(--zuola-navy-950); color: var(--zuola-slate-300); padding: 48px 0; }
.footer-nav { align-items: center; display: flex; flex-wrap: wrap; gap: 12px 24px; list-style: none; margin: 0; padding: 0; }
.footer-nav li { margin: 0; padding: 0; }
.footer-nav a { color: var(--zuola-slate-200); font-size: 14px; font-weight: 600; text-decoration: none; }
.footer-nav a:hover { color: #fdba74; }
.footer-meta { border-top: 1px solid rgba(255, 255, 255, .1); color: #94a3b8; font-size: 14px; line-height: 1.75; margin-top: 28px; padding-top: 24px; }
.footer-meta a { color: var(--zuola-slate-300); }

@media (max-width: 1023px) {
  .site-shell { padding-left: 28px; padding-right: 28px; }
  .nav-toggle { display: inline-flex; }
  .nav-menu { background: #fff; border-bottom: 1px solid var(--zuola-slate-200); box-shadow: var(--zuola-shadow); display: none; left: 0; max-height: calc(100vh - 74px); overflow-y: auto; padding: 16px 28px; position: absolute; right: 0; top: 74px; }
  .nav-menu.is-open { display: block; }
  .nav-list { align-items: stretch; flex-direction: column; }
  .final-cta-inner { align-items: flex-start; flex-direction: column; padding-left: 28px; padding-right: 28px; }
  .related-posts-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}
@media (max-width: 782px) { .admin-bar .site-header { top: 46px; } }
@media (max-width: 720px) {
  .blog-section, .single-section { padding: 56px 0 68px; }
  .post-grid { grid-template-columns: 1fr; }
  .post-card-body { padding: 22px; }
  .blog-heading { align-items: flex-start; flex-direction: column; }
  .entry-content { font-size: 16px; line-height: 1.78; }
  .pagination-desktop { display: none; }
  .pagination-mobile { display: block; }
  .post-navigation .nav-links { grid-template-columns: 1fr; }
  .post-navigation .nav-prev, .post-navigation .nav-next { grid-column: 1; text-align: left; }
  .newsletter-fields { flex-direction: column; }
  .newsletter-fields .button-primary { width: 100%; }
}
@media (max-width: 640px) {
  .site-shell { padding-left: 20px; padding-right: 20px; }
  .brand-logo { height: 44px; width: 44px; }
  .nav-menu { padding-left: 20px; padding-right: 20px; }
  .final-cta { padding: 56px 0; }
  .final-cta-inner { padding-left: 20px; padding-right: 20px; }
}
@media (max-width: 420px) {
  .site-shell { padding-left: 16px; padding-right: 16px; }
  .nav-menu { padding-left: 16px; padding-right: 16px; }
  .post-card, .single-featured { border-radius: 12px; }
  .final-cta-inner { padding-left: 16px; padding-right: 16px; }
  .related-posts-grid { grid-template-columns: 1fr; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}