/*
Theme Name: LOM Blog
Theme URI: https://lomdesign.jp
Description: LOMプロダクトスタジオの公式ブログテーマ。シンプルでクリーンなデザイン。
Author: LOM
Author URI: https://lomdesign.jp
Version: 1.4.0
Text Domain: lom-blog
*/

/* ============================================================
   Variables & Reset
   ============================================================ */
:root {
  --bg: #fafafa;
  --bg-white: #ffffff;
  --bg-warm: #f5f3f0;
  --bg-dark: #141418;
  --border: #e5e2dd;
  --border-light: #eceae6;
  --text: #1a1a1f;
  --text-sub: #555560;
  --text-muted: #8e8e99;
  --accent: #3553f0;
  --accent-hover: #2a42c8;
  --accent-soft: #eef0ff;
  --warm: #e8735a;
  --warm-soft: #fef0ed;
  --teal: #1a9a8a;
  --teal-soft: #edf8f6;
  --font: 'Inter', 'Noto Sans JP', -apple-system, BlinkMacSystemFont, sans-serif;
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 1px 3px rgba(0,0,0,0.04), 0 4px 12px rgba(0,0,0,0.03);
  --shadow-hover: 0 4px 16px rgba(0,0,0,0.08), 0 12px 32px rgba(0,0,0,0.04);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-font-smoothing: antialiased; }
body {
  font-family: var(--font); background: var(--bg); color: var(--text);
  line-height: 1.8; font-weight: 400; font-size: 15px; overflow-x: hidden;
}
::selection { background: var(--accent-soft); color: var(--accent); }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
img { max-width: 100%; height: auto; display: block; }

/* ============================================================
   Navigation
   ============================================================ */
.nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 1000;
  background: rgba(250,250,250,0.88); backdrop-filter: blur(24px);
  -webkit-backdrop-filter: blur(24px);
  border-bottom: 1px solid transparent;
  transition: border-color 0.3s, box-shadow 0.3s;
}
.nav.scrolled { border-bottom-color: var(--border-light); }
.nav-inner {
  max-width: 1120px; margin: 0 auto; padding: 0 2rem;
  height: 60px; display: flex; align-items: center; justify-content: space-between;
}
.nav-logo {
  font-size: 1.2rem; font-weight: 800; letter-spacing: 0.06em; color: var(--text);
}
.nav-links { display: flex; align-items: center; gap: 0.5rem; }
.nav-links a {
  font-size: 0.85rem; font-weight: 500; color: var(--text-sub);
  padding: 6px 14px; border-radius: 8px; transition: all 0.2s;
}
.nav-links a:hover { background: rgba(0,0,0,0.04); color: var(--text); }
.nav-cta {
  background: var(--text) !important; color: var(--bg) !important;
  padding: 7px 18px !important; border-radius: 8px !important; font-weight: 500 !important;
  transition: opacity 0.2s !important;
}
.nav-cta:hover { opacity: 0.85 !important; }

.nav-menu-btn {
  display: none; width: 36px; height: 36px; background: none; border: none;
  cursor: pointer; border-radius: 8px; flex-direction: column;
  align-items: center; justify-content: center; gap: 5px; transition: background 0.2s;
}
.nav-menu-btn:hover { background: rgba(0,0,0,0.04); }
.nav-menu-btn span {
  display: block; width: 20px; height: 1.5px; background: var(--text);
  transition: all 0.3s var(--ease);
}
.nav-menu-btn.active span:nth-child(1) { transform: rotate(45deg) translate(4.5px, 4.5px); }
.nav-menu-btn.active span:nth-child(2) { opacity: 0; }
.nav-menu-btn.active span:nth-child(3) { transform: rotate(-45deg) translate(4.5px, -4.5px); }

@media (max-width: 768px) {
  .nav-inner { padding: 0 1.25rem; }
  .nav-menu-btn { display: flex; }
  .nav-links {
    position: fixed; top: 60px; left: 0; right: 0;
    background: var(--bg); border-bottom: 1px solid var(--border-light);
    flex-direction: column; padding: 1rem 1.25rem;
    opacity: 0; visibility: hidden; pointer-events: none;
    transform: translateY(-20px);
    transition: opacity 0.3s var(--ease), transform 0.3s var(--ease), visibility 0.3s;
    box-shadow: 0 8px 24px rgba(0,0,0,0.06); z-index: 999;
  }
  .nav-links.open {
    opacity: 1; visibility: visible; pointer-events: auto;
    transform: translateY(0);
  }
  .nav-links a { width: 100%; padding: 10px 14px; }
}

/* ============================================================
   Footer
   ============================================================ */
.footer {
  background: var(--bg); border-top: 1px solid var(--border-light); padding: 2.5rem 2rem;
}
.footer-inner {
  max-width: 1120px; margin: 0 auto;
  display: flex; justify-content: space-between; align-items: center;
}
.footer-logo { font-size: 1rem; font-weight: 800; letter-spacing: 0.06em; }
.footer-links { display: flex; gap: 1.5rem; }
.footer-links a { font-size: 0.78rem; color: var(--text-muted); transition: color 0.2s; }
.footer-links a:hover { color: var(--text); }
.footer-copy { font-size: 0.72rem; color: var(--text-muted); }

@media (max-width: 768px) {
  .footer-inner { flex-direction: column; gap: 1.25rem; text-align: center; }
}

/* ============================================================
   Reveal Animation
   ============================================================ */
.rv {
  opacity: 0; transform: translateY(28px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
}
.rv.vis { opacity: 1; transform: translateY(0); }
.rv-d1 { transition-delay: 0.06s; }
.rv-d2 { transition-delay: 0.12s; }
.rv-d3 { transition-delay: 0.18s; }

/* Fallback: if JS doesn't fire, show content after 2s */
@keyframes rvFallback {
  to { opacity: 1; transform: translateY(0); }
}
.rv { animation: rvFallback 0.8s var(--ease) 2s forwards; }
.rv.vis { animation: none; }

/* ============================================================
   Blog Hero
   ============================================================ */
.blog-hero {
  padding: 8rem 2rem 3rem; background: var(--bg);
}
.blog-hero-inner {
  max-width: 1120px; margin: 0 auto;
}
.blog-hero h1 {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  font-weight: 800; letter-spacing: -0.02em; line-height: 1.3;
}
.blog-hero p {
  font-size: 0.92rem; color: var(--text-sub); margin-top: 0.5rem;
}

/* ============================================================
   Post Cards (Blog Listing)
   ============================================================ */
.blog-content {
  max-width: 1120px; margin: 0 auto;
  padding: 2rem 2rem 6rem;
}

.posts-grid {
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 1.5rem;
}

.post-card {
  background: var(--bg-white); border: 1px solid var(--border-light);
  border-radius: var(--radius-lg); overflow: hidden;
  transition: all 0.35s var(--ease);
}
.post-card:hover {
  box-shadow: var(--shadow-hover); transform: translateY(-4px); border-color: transparent;
}
.post-card a { display: block; color: inherit; }

.post-card-thumb {
  aspect-ratio: 16 / 9; overflow: hidden; background: var(--bg-warm);
}
.post-card-thumb img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform 0.5s var(--ease);
}
.post-card:hover .post-card-thumb img { transform: scale(1.04); }

.post-card-body { padding: 1.25rem 1.5rem 1.5rem; }

.post-card-meta {
  display: flex; align-items: center; gap: 0.75rem;
  margin-bottom: 0.6rem;
}
.post-card-date {
  font-size: 0.72rem; font-weight: 500; color: var(--text-muted);
}
.post-card-cat {
  font-size: 0.65rem; font-weight: 600; letter-spacing: 0.03em;
  padding: 2px 8px; border-radius: 5px;
  background: var(--accent-soft); color: var(--accent);
}

.post-card-title {
  font-size: 1.05rem; font-weight: 600; line-height: 1.5;
  margin-bottom: 0.4rem;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}

.post-card-excerpt {
  font-size: 0.82rem; color: var(--text-sub); line-height: 1.7;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}

/* No thumbnail fallback */
.post-card-thumb-empty {
  aspect-ratio: 16 / 9; background: var(--bg-warm);
  display: flex; align-items: center; justify-content: center;
}
.post-card-thumb-empty span {
  font-size: 2rem; opacity: 0.3;
}

@media (max-width: 640px) {
  .posts-grid { grid-template-columns: 1fr; }
}

/* ============================================================
   Single Post
   ============================================================ */
.single-header {
  padding: 8rem 2rem 2rem; background: var(--bg);
}
.single-header-inner {
  max-width: 760px; margin: 0 auto;
}
.single-meta {
  display: flex; align-items: center; gap: 0.75rem; margin-bottom: 1rem;
}
.single-date {
  font-size: 0.78rem; font-weight: 500; color: var(--text-muted);
}
.single-cat {
  font-size: 0.68rem; font-weight: 600; padding: 3px 10px; border-radius: 5px;
  background: var(--accent-soft); color: var(--accent);
}
.single-title {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 800; line-height: 1.4; letter-spacing: -0.02em;
}

.single-thumbnail {
  max-width: 960px; margin: 2rem auto 0; padding: 0 2rem;
}
.single-thumbnail img {
  width: 100%; border-radius: var(--radius-lg);
  aspect-ratio: 16 / 9; object-fit: cover;
}

.single-content {
  max-width: 760px; margin: 0 auto;
  padding: 3rem 2rem 6rem;
}

/* Article Typography */
.single-content h2 {
  font-size: 1.6rem; font-weight: 700; margin-top: 3rem; margin-bottom: 1rem;
  padding-bottom: 0.6rem; border-bottom: 2px solid var(--border-light);
  letter-spacing: -0.01em;
}
.single-content h3 {
  font-size: 1.3rem; font-weight: 700; margin-top: 2.5rem; margin-bottom: 0.75rem;
}
.single-content h4 {
  font-size: 1.15rem; font-weight: 600; margin-top: 2rem; margin-bottom: 0.5rem;
}
.single-content p {
  font-size: 1.05rem; color: var(--text-sub); line-height: 2.1; margin-bottom: 1.5rem;
}
.single-content a {
  color: var(--accent); font-weight: 500;
  text-decoration: underline; text-underline-offset: 3px;
  transition: color 0.2s;
}
.single-content a:hover { color: var(--accent-hover); }
.single-content ul,
.single-content ol {
  padding-left: 1.5rem; margin-bottom: 1.5rem; list-style: revert;
}
.single-content li {
  font-size: 1.05rem; color: var(--text-sub); line-height: 2.1;
  margin-bottom: 0.3rem;
}
.single-content blockquote {
  border-left: 3px solid var(--accent); margin: 2rem 0;
  padding: 1rem 1.5rem; background: var(--bg-warm); border-radius: 0 var(--radius) var(--radius) 0;
}
.single-content blockquote p {
  margin-bottom: 0; color: var(--text-sub); font-size: 1.05rem;
}
.single-content pre {
  background: var(--bg-dark); color: #e0e0e0;
  padding: 1.5rem; border-radius: var(--radius);
  overflow-x: auto; margin-bottom: 1.5rem;
  font-size: 0.85rem; line-height: 1.7;
}
.single-content code {
  font-family: 'SF Mono', 'Fira Code', monospace;
  font-size: 0.85em;
}
.single-content p code {
  background: var(--bg-warm); padding: 2px 6px; border-radius: 4px;
  color: var(--warm);
}
.single-content img {
  border-radius: var(--radius); margin: 2rem 0;
}
.single-content .related-posts img,
.single-content .related-card img {
  border-radius: 0; margin: 0;
  width: 100%; height: 100%; object-fit: cover;
}
.single-content hr {
  border: none; border-top: 1px solid var(--border-light);
  margin: 3rem 0;
}
.single-content table,
.single-content .wp-block-table table,
.wp-block-table table {
  width: 100% !important; border-collapse: collapse !important;
  margin: 2rem 0 2.5rem !important;
  border: none !important; background: transparent !important;
  border-radius: 0 !important; box-shadow: none !important;
}
.single-content .wp-block-table,
.wp-block-table {
  margin: 2rem 0 2.5rem; overflow-x: auto;
  border: none !important;
}
.single-content .wp-block-table table { margin: 0 !important; }
.single-content th,
.single-content td,
.single-content .wp-block-table th,
.single-content .wp-block-table td,
.wp-block-table th,
.wp-block-table td {
  font-size: 0.95rem !important; padding: 0.9rem 1rem !important;
  border: none !important; border-bottom: 1px solid #c5c0ba !important;
  text-align: left; color: var(--text-sub) !important;
  background: transparent !important;
}
.single-content tr:last-child td,
.wp-block-table tr:last-child td {
  border-bottom: 1px solid #c5c0ba !important;
}
.single-content th,
.single-content .wp-block-table th,
.wp-block-table th {
  font-weight: 700 !important; color: var(--text) !important;
  background: transparent !important;
  font-size: 0.95rem !important;
  border-bottom: 2.5px solid var(--text) !important;
}
@media (max-width: 640px) {
  .single-content table,
  .single-content .wp-block-table table,
  .wp-block-table table { font-size: 0.85rem !important; }
  .single-content th,
  .single-content td,
  .wp-block-table th,
  .wp-block-table td { padding: 0.7rem 0.75rem !important; }
}

/* ============================================================
   Post Navigation
   ============================================================ */
.post-nav {
  max-width: 760px; margin: 0 auto; padding: 0 2rem 4rem;
  display: flex; justify-content: space-between; gap: 1rem;
}
.post-nav a {
  display: flex; flex-direction: column; gap: 4px;
  padding: 1rem 1.25rem; border: 1px solid var(--border-light);
  border-radius: var(--radius); flex: 1;
  transition: all 0.3s var(--ease);
}
.post-nav a:hover {
  border-color: var(--accent); box-shadow: var(--shadow);
}
.post-nav-label {
  font-size: 0.7rem; font-weight: 600; color: var(--text-muted);
  text-transform: uppercase; letter-spacing: 0.05em;
}
.post-nav-title {
  font-size: 0.88rem; font-weight: 600; color: var(--text);
  display: -webkit-box; -webkit-line-clamp: 1; -webkit-box-orient: vertical;
  overflow: hidden;
}
.post-nav-next { text-align: right; }

@media (max-width: 640px) {
  .post-nav { flex-direction: column; }
}

/* ============================================================
   Pagination
   ============================================================ */
.pagination {
  display: flex; justify-content: center; align-items: center; gap: 6px;
  padding: 3rem 0;
}
.pagination a,
.pagination span {
  display: flex; align-items: center; justify-content: center;
  width: 40px; height: 40px; border-radius: 10px;
  font-size: 0.85rem; font-weight: 600;
  transition: all 0.2s var(--ease);
}
.pagination a {
  color: var(--text-sub); border: 1px solid var(--border-light);
}
.pagination a:hover {
  border-color: var(--accent); color: var(--accent); background: var(--accent-soft);
}
.pagination .current {
  background: var(--accent); color: #fff; border: 1px solid var(--accent);
}

/* ============================================================
   Category / Archive Header
   ============================================================ */
.archive-label {
  font-size: 0.75rem; font-weight: 600; color: var(--accent);
  letter-spacing: 0.04em; margin-bottom: 0.4rem;
}

/* ============================================================
   404 Page
   ============================================================ */
.page-404 {
  text-align: center; padding: 10rem 2rem 6rem;
}
.page-404-num {
  font-size: 6rem; font-weight: 800; color: var(--border-light); line-height: 1;
  margin-bottom: 1rem;
}
.page-404 h1 {
  font-size: 1.5rem; font-weight: 700; margin-bottom: 0.75rem;
}
.page-404 p {
  font-size: 0.92rem; color: var(--text-sub); margin-bottom: 2rem;
}
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font-family: var(--font); font-size: 0.88rem; font-weight: 600;
  padding: 10px 22px; border-radius: 10px; border: none; cursor: pointer;
  transition: all 0.25s var(--ease);
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: var(--accent-hover); }

/* ============================================================
   Sidebar / Widgets (optional)
   ============================================================ */
.widget {
  margin-bottom: 2rem;
}
.widget-title {
  font-size: 0.82rem; font-weight: 700; text-transform: uppercase;
  letter-spacing: 0.04em; color: var(--text);
  margin-bottom: 0.75rem; padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--border-light);
}
.widget ul { list-style: none; }
.widget li { padding: 0.4rem 0; }
.widget li a {
  font-size: 0.85rem; color: var(--text-sub); transition: color 0.2s;
}
.widget li a:hover { color: var(--accent); }

/* ============================================================
   Page Template (for static pages like About)
   ============================================================ */
.page-content {
  max-width: 760px; margin: 0 auto;
  padding: 3rem 2rem 6rem;
}
.page-content h2 {
  font-size: 1.3rem; font-weight: 700; margin-top: 2.5rem; margin-bottom: 0.75rem;
  padding-bottom: 0.5rem; border-bottom: 1px solid var(--border-light);
}
.page-content p {
  font-size: 0.92rem; color: var(--text-sub); line-height: 2; margin-bottom: 1rem;
}

/* ============================================================
   Related Posts
   ============================================================ */
.related-posts {
  max-width: 760px; margin: 0 auto;
  padding: 0 2rem 4rem;
  position: relative; padding-top: 16px;
}
.single-content .related-posts {
  padding: 0; padding-top: 16px; margin: 2.5rem 0;
}
.related-posts-label {
  display: inline-block;
  font-size: 0.7rem; font-weight: 700; color: #ffffff;
  letter-spacing: 0.05em;
  background: var(--accent); padding: 5px 14px;
  border-radius: 6px;
  position: absolute; top: -10px; left: calc(2rem + 12px); z-index: 2;
  line-height: 1.4;
}
.single-content .related-posts .related-posts-label {
  left: 12px;
}
.related-posts-list {
  display: flex; flex-direction: column; gap: 12px;
}
.related-card {
  display: flex !important; align-items: stretch;
  background: var(--bg-white); border: 1px solid var(--border-light);
  border-radius: var(--radius); overflow: hidden;
  transition: all 0.3s var(--ease);
  margin: 0 !important;
  position: relative; z-index: 1;
}
.related-card:hover {
  box-shadow: var(--shadow-hover); transform: translateY(-2px); border-color: transparent;
}
.related-card a {
  display: flex !important; align-items: stretch; width: 100%;
  color: inherit !important; text-decoration: none !important;
}
.related-card-thumb {
  width: 160px; min-height: 90px; flex-shrink: 0;
  overflow: hidden; background: var(--bg-warm);
}
.related-card-thumb img {
  width: 100% !important; height: 100% !important; object-fit: cover !important;
  border-radius: 0 !important; margin: 0 !important;
  transition: transform 0.5s var(--ease);
}
.related-card:hover .related-card-thumb img { transform: scale(1.06); }
.related-card-thumb-empty {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.3rem; opacity: 0.3;
}
.related-card-body {
  flex: 1; padding: 0.9rem 1.2rem;
  display: flex; align-items: center;
}
.related-card-title {
  font-size: 0.92rem; font-weight: 600; line-height: 1.5;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.related-card-external {
  font-size: 0.65rem; font-weight: 500; color: var(--text-muted);
  margin-top: 4px;
}

@media (max-width: 768px) {
  .related-card { display: flex !important; }
  .related-card a { display: flex !important; }
  .related-card-thumb { width: 120px; min-height: 80px; }
  .related-card-thumb img {
    width: 100% !important; height: 100% !important;
    object-fit: cover !important; border-radius: 0 !important; margin: 0 !important;
  }
  .related-card-body { padding: 0.7rem 1rem; }
  .related-card-title { font-size: 0.85rem; }
  .single-content .related-card { display: flex !important; }
  .single-content .related-card a { display: flex !important; }
  .single-content .related-card-thumb { width: 120px; }
  .single-content .related-card-thumb img {
    width: 100% !important; height: 100% !important;
    object-fit: cover !important; border-radius: 0 !important; margin: 0 !important;
  }
}

/* Related cards inside article content (shortcode) */
.single-content .related-card {
  display: flex !important; align-items: stretch !important;
  background: var(--bg-white) !important; border: 1px solid var(--border-light) !important;
  border-radius: var(--radius) !important; overflow: hidden !important;
  margin: 1.5rem 0 !important; padding: 0 !important;
  transition: all 0.3s var(--ease);
}
.single-content .related-card:hover {
  box-shadow: var(--shadow-hover); transform: translateY(-2px); border-color: transparent !important;
}
.single-content .related-card a {
  display: flex !important; align-items: stretch !important; width: 100% !important;
  color: inherit !important; text-decoration: none !important;
}
.single-content .related-card a:hover { color: inherit !important; }
.single-content .related-card-thumb {
  width: 160px !important; min-height: 90px !important; flex-shrink: 0 !important;
  overflow: hidden !important; background: var(--bg-warm) !important;
}
.single-content .related-card-thumb img {
  width: 100% !important; height: 100% !important; object-fit: cover !important;
  border-radius: 0 !important; margin: 0 !important;
  transition: transform 0.5s var(--ease);
}
.single-content .related-card:hover .related-card-thumb img { transform: scale(1.06); }
.single-content .related-card-body {
  flex: 1 !important; padding: 0.9rem 1.2rem !important;
  display: flex !important; align-items: center !important;
}
.single-content .related-card-title {
  font-size: 0.92rem !important; font-weight: 600 !important; line-height: 1.5 !important;
  color: var(--text) !important;
  display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical;
  overflow: hidden;
}
.single-content .related-card-external {
  font-size: 0.65rem; font-weight: 500; color: var(--text-muted);
  margin-top: 4px;
}
@media (max-width: 480px) {
  .single-content .related-card-thumb { width: 110px; min-height: 75px; }
  .single-content .related-card-body { padding: 0.7rem 1rem; }
  .single-content .related-card-title { font-size: 0.85rem; }
}