/*
Theme Name: WEB FLEEK Blog
Theme URI: https://webfleek.jp
Author: WEB FLEEK Inc.
Author URI: https://webfleek.jp
Description: WEB FLEEK 公式ブログテーマ
Version: 1.0
*/

/* ========================================
   RESET & BASE
   ======================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

:root {
  --black: #0A0A0A;
  --white: #FFFFFF;
  --gray-50: #F9F9F9;
  --gray-100: #F0F0F0;
  --gray-200: #E0E0E0;
  --gray-400: #9E9E9E;
  --gray-600: #5A5A5A;
  --font-en: 'Playfair Display', serif;
  --font-ja: 'Noto Sans JP', sans-serif;
  --font-ui: 'Inter', 'Noto Sans JP', sans-serif;
  --container: 1120px;
  --transition: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  overflow-x: hidden;
}

body {
  font-family: var(--font-ja);
  background: var(--white);
  color: var(--black);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }
button { cursor: pointer; border: none; background: none; font-family: inherit; }

/* ========================================
   CONTAINER
   ======================================== */
.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 60px);
}

/* ========================================
   HEADER
   ======================================== */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 1000;
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--gray-200);
  transition: box-shadow var(--transition);
}
.header.scrolled {
  box-shadow: 0 1px 20px rgba(0,0,0,0.06);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 clamp(20px, 5vw, 60px);
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-ui);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--black);
  text-decoration: none;
}

.nav {
  display: flex;
  align-items: center;
  gap: 36px;
}
.nav a {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--gray-600);
  transition: color var(--transition);
}
.nav a:hover { color: var(--black); }
.nav a.current { color: var(--black); }

.nav-cta {
  background: var(--black) !important;
  color: var(--white) !important;
  padding: 10px 22px;
  font-size: 12px !important;
  letter-spacing: 0.05em !important;
  transition: opacity var(--transition) !important;
}
.nav-cta:hover { opacity: 0.75; }

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 4px;
  cursor: pointer;
  background: none;
  border: none;
}
.hamburger span {
  display: block;
  width: 22px;
  height: 1px;
  background: var(--black);
  transition: all var(--transition);
}
.hamburger.is-open span:nth-child(1) { transform: rotate(45deg) translate(4px, 4px); }
.hamburger.is-open span:nth-child(2) { opacity: 0; }
.hamburger.is-open span:nth-child(3) { transform: rotate(-45deg) translate(4px, -4px); }

/* Mobile Nav */
.mobile-nav {
  position: fixed;
  top: 64px; left: 0; right: 0;
  background: var(--white);
  border-bottom: 1px solid var(--gray-200);
  padding: 24px 0;
  z-index: 999;
  display: flex;
  flex-direction: column;
  align-items: center;
  transform: translateY(-110%);
  transition: transform var(--transition);
}
.mobile-nav.is-open { transform: translateY(0); }

.mobile-nav-link {
  display: block;
  width: 100%;
  padding: 16px 40px;
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: var(--gray-600);
  text-align: center;
  border-bottom: 1px solid var(--gray-100);
  transition: color var(--transition);
}
.mobile-nav-link:last-child { border-bottom: none; }
.mobile-nav-link:hover { color: var(--black); }

/* ========================================
   ANIMATIONS
   ======================================== */
.fade-up {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}
.fade-up.is-visible {
  opacity: 1;
  transform: translateY(0);
}
.delay-1 { transition-delay: 0.1s; }
.delay-2 { transition-delay: 0.2s; }
.delay-3 { transition-delay: 0.3s; }

/* ========================================
   BLOG HERO（記事一覧上部）
   ======================================== */
.blog-hero {
  padding: 140px clamp(20px, 5vw, 60px) 80px;
  background: var(--gray-50);
  border-bottom: 1px solid var(--gray-200);
}

.blog-hero-inner {
  max-width: var(--container);
  margin: 0 auto;
}

.blog-hero-label {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.25em;
  color: var(--gray-400);
  text-transform: uppercase;
  margin-bottom: 16px;
}

.blog-hero-title {
  font-family: var(--font-en);
  font-size: clamp(36px, 5vw, 64px);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.1;
}

.blog-hero-desc {
  margin-top: 20px;
  color: var(--gray-600);
  font-size: 15px;
  max-width: 480px;
}

/* ========================================
   BLOG LIST
   ======================================== */
.blog-list-section {
  padding: clamp(60px, 8vw, 120px) 0;
}

.blog-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 40px 32px;
}

.blog-card {
  display: flex;
  flex-direction: column;
  border: 1px solid var(--gray-200);
  transition: border-color var(--transition), transform var(--transition);
}
.blog-card:hover {
  border-color: var(--black);
  transform: translateY(-4px);
}

.blog-card-thumb {
  aspect-ratio: 16/9;
  overflow: hidden;
  background: var(--gray-100);
}
.blog-card-thumb img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}
.blog-card:hover .blog-card-thumb img {
  transform: scale(1.04);
}
.blog-card-thumb-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gray-100);
  color: var(--gray-400);
  font-family: var(--font-ui);
  font-size: 11px;
  letter-spacing: 0.1em;
}

.blog-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 12px;
}

.blog-card-cat {
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-400);
  border: 1px solid var(--gray-200);
  padding: 3px 10px;
}

.blog-card-date {
  font-family: var(--font-ui);
  font-size: 11px;
  color: var(--gray-400);
  letter-spacing: 0.05em;
}

.blog-card-title {
  font-size: 16px;
  font-weight: 700;
  line-height: 1.6;
  margin-bottom: 12px;
  letter-spacing: -0.01em;
  flex: 1;
}

.blog-card-excerpt {
  font-size: 13px;
  color: var(--gray-600);
  line-height: 1.7;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.blog-card-link-text {
  margin-top: 20px;
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--black);
  display: flex;
  align-items: center;
  gap: 8px;
}
.blog-card-link-text::after {
  content: '→';
  transition: transform var(--transition);
}
.blog-card:hover .blog-card-link-text::after {
  transform: translateX(4px);
}

/* No posts */
.blog-no-posts {
  text-align: center;
  padding: 80px 0;
  color: var(--gray-400);
  font-size: 15px;
}

/* Pagination */
.blog-pagination {
  margin-top: 80px;
  display: flex;
  justify-content: center;
  align-items: center;
}

/* Reset the <ul> wrapper */
.blog-pagination ul.page-numbers {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 8px;
  list-style: none;
  margin: 0;
  padding: 0;
  width: auto;
  height: auto;
  border: none;
  background: none;
}

.blog-pagination ul.page-numbers li {
  margin: 0;
  padding: 0;
}

/* Style individual page number links and spans */
.blog-pagination ul.page-numbers li a,
.blog-pagination ul.page-numbers li span {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border: 1px solid var(--gray-200);
  font-family: var(--font-ui);
  font-size: 13px;
  color: var(--gray-600);
  transition: all var(--transition);
  text-decoration: none;
  background: var(--white);
}

.blog-pagination ul.page-numbers li a:hover,
.blog-pagination ul.page-numbers li span.current {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}

.blog-pagination ul.page-numbers li span.dots {
  border: none;
  background: none;
  color: var(--gray-400);
}

/* Category Filter */
.blog-categories {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 48px;
}
.blog-cat-btn {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  padding: 8px 18px;
  border: 1px solid var(--gray-200);
  color: var(--gray-600);
  background: var(--white);
  transition: all var(--transition);
  cursor: pointer;
  text-decoration: none;
  display: inline-block;
}
.blog-cat-btn:hover,
.blog-cat-btn.active {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}

/* ========================================
   SINGLE POST
   ======================================== */
.single-hero {
  padding: 140px clamp(20px, 5vw, 60px) 64px;
  border-bottom: 1px solid var(--gray-200);
}

.single-hero-inner {
  max-width: 800px;
  margin: 0 auto;
}

.single-meta {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 24px;
}

.single-cat {
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-400);
  border: 1px solid var(--gray-200);
  padding: 4px 12px;
}

.single-date {
  font-family: var(--font-ui);
  font-size: 12px;
  color: var(--gray-400);
  letter-spacing: 0.05em;
}

.single-title {
  font-size: clamp(24px, 3.5vw, 40px);
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.02em;
  margin-bottom: 32px;
}

.single-eyecatch {
  margin-top: 40px;
  border: 1px solid var(--gray-100);
  overflow: hidden;
}
.single-eyecatch img {
  width: 100%;
  height: auto;
}

/* Article Content */
.single-content-wrap {
  display: flex;
  gap: 32px;
  max-width: 1200px;
  margin: 0 auto;
  padding: clamp(60px, 8vw, 100px) 20px;
}

.single-content {
  flex: 1 1 0%;
  min-width: 0;
  max-width: none;
  margin: 0;
  padding: 0;
  overflow-wrap: break-word;
  word-break: break-word;
}

@media (max-width: 1024px) {
  .single-content-wrap {
    display: block;
    padding: clamp(60px, 8vw, 100px) 0;
  }
  .single-content {
    max-width: 800px;
    margin: 0 auto;
    padding: 0 clamp(20px, 5vw, 60px);
  }
}

.entry-content h2 {
  font-size: clamp(20px, 2.5vw, 28px);
  font-weight: 700;
  margin: 56px 0 20px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--black);
  line-height: 1.4;
  letter-spacing: -0.01em;
}
.entry-content h3 {
  font-size: clamp(17px, 2vw, 22px);
  font-weight: 700;
  margin: 40px 0 16px;
  line-height: 1.4;
}
.entry-content h4 {
  font-size: 17px;
  font-weight: 700;
  margin: 32px 0 12px;
}
.entry-content p {
  margin-bottom: 24px;
  font-size: 16px;
  line-height: 1.9;
  color: #1a1a1a;
}
.entry-content ul,
.entry-content ol {
  margin: 20px 0 28px 1.5em;
  font-size: 15px;
  line-height: 1.8;
}
.entry-content ul { list-style: disc; }
.entry-content ol { list-style: decimal; }
.entry-content li { margin-bottom: 8px; }

.entry-content a {
  color: var(--black);
  text-decoration: underline;
  text-underline-offset: 3px;
}
.entry-content a:hover { opacity: 0.6; }

.entry-content strong { font-weight: 700; }
.entry-content em { font-style: italic; }

.entry-content blockquote {
  margin: 32px 0;
  padding: 24px 32px;
  border-left: 3px solid var(--black);
  background: var(--gray-50);
  font-size: 15px;
  color: var(--gray-600);
  line-height: 1.8;
}

.entry-content img {
  margin: 32px auto;
  border: 1px solid var(--gray-100);
}

.entry-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 32px 0;
  font-size: 14px;
}
.entry-content th,
.entry-content td {
  padding: 12px 16px;
  border: 1px solid var(--gray-200);
  text-align: left;
}
.entry-content th {
  background: var(--gray-50);
  font-weight: 700;
}
.entry-content code {
  font-family: monospace;
  background: var(--gray-100);
  padding: 2px 6px;
  font-size: 14px;
}
.entry-content pre {
  background: var(--black);
  color: var(--white);
  padding: 24px;
  overflow-x: auto;
  margin: 32px 0;
}
.entry-content pre code {
  background: none;
  color: inherit;
  padding: 0;
}

/* Post Footer */
.post-footer {
  max-width: 800px;
  margin: 0 auto;
  padding: 40px clamp(20px, 5vw, 60px) 0;
  border-top: 1px solid var(--gray-200);
}

.post-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 40px;
}
.post-tag {
  font-family: var(--font-ui);
  font-size: 11px;
  padding: 5px 14px;
  border: 1px solid var(--gray-200);
  color: var(--gray-600);
  transition: all var(--transition);
}
.post-tag:hover {
  background: var(--black);
  color: var(--white);
  border-color: var(--black);
}

/* Post Navigation */
.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--gray-200);
  margin: 0 auto;
  max-width: 800px;
  margin-bottom: 80px;
}
.post-nav-item {
  background: var(--white);
  padding: 24px clamp(20px, 5vw, 60px);
  transition: background var(--transition);
}
.post-nav-item:hover { background: var(--gray-50); }
.post-nav-item.prev { text-align: left; }
.post-nav-item.next { text-align: right; }
.post-nav-label {
  font-family: var(--font-ui);
  font-size: 10px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-400);
  display: block;
  margin-bottom: 8px;
}
.post-nav-title {
  font-size: 13px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--black);
}

/* ========================================
   BACK TO LIST
   ======================================== */
.back-to-list {
  text-align: center;
  padding: 40px 0 80px;
}
.back-to-list a {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--gray-600);
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: color var(--transition);
}
.back-to-list a::before { content: '←'; }
.back-to-list a:hover { color: var(--black); }

/* ========================================
   CTA BANNER
   ======================================== */
.blog-cta {
  background: var(--black);
  color: var(--white);
  padding: clamp(60px, 8vw, 100px) 0;
  text-align: center;
}

.blog-cta-label {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.25em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-bottom: 16px;
}

.blog-cta-title {
  font-size: clamp(22px, 3vw, 36px);
  font-weight: 700;
  line-height: 1.4;
  margin-bottom: 12px;
}

.blog-cta-sub {
  font-size: 14px;
  color: rgba(255,255,255,0.6);
  margin-bottom: 36px;
}

.blog-cta-actions {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
}

.btn-cta-white {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 36px;
  font-family: var(--font-ja);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.05em;
  background: var(--white);
  color: var(--black);
  border: 1px solid var(--white);
  transition: all var(--transition);
}
.btn-cta-white:hover {
  background: transparent;
  color: var(--white);
}

.btn-cta-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 16px 36px;
  font-family: var(--font-ja);
  font-size: 14px;
  font-weight: 500;
  letter-spacing: 0.05em;
  background: transparent;
  color: var(--white);
  border: 1px solid rgba(255,255,255,0.4);
  transition: all var(--transition);
}
.btn-cta-ghost:hover {
  border-color: var(--white);
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
  background: var(--black);
  color: var(--white);
  padding: clamp(48px, 6vw, 80px) 0 32px;
}

.footer-inner {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 40px;
  margin-bottom: 48px;
}

.footer-logo {
  font-family: var(--font-ui);
  font-size: 17px;
  font-weight: 600;
  letter-spacing: 0.12em;
  margin-bottom: 16px;
}

.footer-address {
  font-size: 12px;
  color: rgba(255,255,255,0.45);
  line-height: 1.8;
}

.footer-nav {
  display: flex;
  gap: 28px;
  flex-wrap: wrap;
  align-items: center;
}
.footer-nav a {
  font-family: var(--font-ui);
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.15em;
  color: rgba(255,255,255,0.5);
  transition: color var(--transition);
}
.footer-nav a:hover { color: var(--white); }

.footer-legal {
  display: flex;
  align-items: center;
  gap: 16px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.1);
  margin-bottom: 16px;
}
.footer-legal-link {
  font-size: 11px;
  color: rgba(255,255,255,0.35);
  transition: color var(--transition);
}
.footer-legal-link:hover { color: rgba(255,255,255,0.7); }
.footer-legal-sep {
  color: rgba(255,255,255,0.2);
  font-size: 11px;
}

.footer-copy {
  font-size: 11px;
  color: rgba(255,255,255,0.25);
  letter-spacing: 0.05em;
}

/* ========================================
   404
   ======================================== */
.not-found {
  min-height: 60vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  padding: 140px clamp(20px, 5vw, 60px) 80px;
}
.not-found-num {
  font-family: var(--font-en);
  font-size: clamp(80px, 15vw, 180px);
  font-weight: 700;
  color: var(--gray-100);
  line-height: 1;
  margin-bottom: 24px;
}
.not-found-title {
  font-size: 20px;
  font-weight: 700;
  margin-bottom: 12px;
}
.not-found-text {
  color: var(--gray-600);
  font-size: 14px;
  margin-bottom: 40px;
}
.not-found-btn {
  display: inline-flex;
  align-items: center;
  padding: 14px 32px;
  background: var(--black);
  color: var(--white);
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.1em;
  transition: opacity var(--transition);
}
.not-found-btn:hover { opacity: 0.7; }

/* ========================================
   RESPONSIVE
   ======================================== */
@media (max-width: 1024px) {
  .blog-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav { display: none; }
  .hamburger { display: flex; }

  .blog-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .single-title {
    font-size: 22px;
  }

  .single-hero {
    padding: 100px 16px 40px;
  }

  .single-content-wrap {
    padding: 40px 0;
  }

  .single-content {
    padding: 0 16px !important;
  }

  .entry-content img {
    margin: 20px -16px;
    width: calc(100% + 32px);
    max-width: calc(100% + 32px);
  }

  .entry-content h2 {
    font-size: 20px;
    margin: 40px 0 16px;
  }

  .entry-content h3 {
    font-size: 17px;
    margin: 32px 0 12px;
  }

  .entry-content p {
    font-size: 15px;
  }

  .entry-content table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    font-size: 13px;
  }

  .post-footer {
    padding: 30px 16px 0;
  }

  .post-tags {
    gap: 6px;
  }

  .post-tag {
    font-size: 10px;
    padding: 4px 10px;
  }

  .post-nav {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    flex-direction: column;
    gap: 32px;
  }

  .footer-nav {
    gap: 20px;
  }

  .blog-cta-actions {
    flex-direction: column;
    align-items: center;
  }

  /* Pagination responsive */
  .blog-pagination {
    margin-top: 48px;
  }

  .blog-pagination ul.page-numbers {
    gap: 6px;
    flex-wrap: wrap;
  }

  .blog-pagination ul.page-numbers li a,
  .blog-pagination ul.page-numbers li span {
    width: 36px;
    height: 36px;
    font-size: 12px;
  }

  /* Blog hero responsive */
  .blog-hero {
    padding: 100px 16px 48px;
  }

  .blog-list-section {
    padding: 40px 0 60px;
  }

  /* Category filter responsive */
  .blog-categories {
    gap: 6px;
    margin-bottom: 32px;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    flex-wrap: nowrap;
    padding-bottom: 8px;
  }

  .blog-cat-btn {
    font-size: 10px;
    padding: 6px 12px;
    white-space: nowrap;
    flex-shrink: 0;
  }

  /* TOC box responsive */
  .toc-box {
    padding: 16px !important;
  }

  /* Related articles responsive */
  .entry-content div[style*="display:flex"][style*="flex-wrap:wrap"] {
    flex-direction: column !important;
  }

  .entry-content div[style*="max-width:340px"] {
    max-width: 100% !important;
  }
}