/* ===================================================================
   ZEN GADGET — Ghost Theme
   Design: Grayscale only. No photos. Whitespace is the design.
   Fonts: Albert Sans (EN) + Zen Kaku Gothic Antique (JA)
   Mobile-first.
   =================================================================== */

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

/* ===== VARIABLES ===== */
:root {
  --font: 'Albert Sans', 'Zen Kaku Gothic Antique', -apple-system, BlinkMacSystemFont, sans-serif;
  --bg: #F5F5F5;
  --surface: #FFFFFF;
  --text: #3A3A3A;
  --text-2: #7A7A7A;
  --text-3: #ACACAC;
  --border: rgba(0, 0, 0, 0.06);
  --max-w: 640px;
  --space-xs: 8px;
  --space-sm: 16px;
  --space-md: 32px;
  --space-lg: 64px;
  --space-xl: 96px;
  --space-2xl: 128px;
}

/* ===== DARK MODE ===== */
@media (prefers-color-scheme: dark) {
  :root {
    --bg: #1A1A1C;
    --surface: #222224;
    --text: #E2E2E2;
    --text-2: #8C8C8C;
    --text-3: #5C5C5C;
    --border: rgba(255, 255, 255, 0.07);
  }

  body {
    -webkit-font-smoothing: antialiased;
  }

  /* Darken font weight for dark mode readability */
  .post-card-title,
  .post-title,
  .home-title,
  .tag-title,
  .site-logo {
    font-weight: 400;
  }

  .post-content h2,
  .post-content h3 {
    font-weight: 400;
  }

  .post-content {
    line-height: 2.1;
    letter-spacing: 0.01em;
  }
}

/* ===== BASE ===== */
html {
  font-size: 16px;
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  display: none !important;
}

figure {
  display: none !important;
}

.kg-image-card,
.kg-gallery-card,
.kg-bookmark-card {
  display: none !important;
}

/* ===== SITE HEADER ===== */
.site-header {
  padding: var(--space-lg) var(--space-md) var(--space-md);
  max-width: var(--max-w);
  margin: 0 auto;
}

.header-inner {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.site-logo {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text);
}

.site-logo span {
  font-weight: 200;
}

.site-nav ul {
  list-style: none;
  display: flex;
  gap: var(--space-sm);
}

.site-nav a {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-2);
  letter-spacing: 0.04em;
  transition: color 0.2s;
}

.site-nav a:hover {
  color: var(--text);
}

/* ===== HOME HERO ===== */
.home-hero {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md) var(--space-lg);
}

.home-title {
  font-size: 36px;
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.03em;
  color: var(--text);
}

.home-sub {
  margin-top: var(--space-sm);
  font-size: 15px;
  font-weight: 300;
  color: var(--text-2);
  letter-spacing: 0.02em;
}

/* ===== POST FEED (Home / Tag) ===== */
.post-feed {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-md) var(--space-xl);
}

.post-card {
  border-top: 1px solid var(--border);
}

.post-card:last-child {
  border-bottom: 1px solid var(--border);
}

.post-card-link {
  display: block;
  padding: var(--space-lg) 0;
  transition: opacity 0.2s;
}

.post-card-link:hover {
  opacity: 0.7;
}

.post-card-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: var(--space-xs);
}

.post-card-date {
  display: block;
  font-size: 12px;
  font-weight: 300;
  color: var(--text-3);
  margin-bottom: var(--space-sm);
}

.post-card-title {
  font-size: 22px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: -0.02em;
  margin-bottom: var(--space-sm);
}

.post-card-excerpt {
  font-size: 14px;
  font-weight: 300;
  color: var(--text-2);
  line-height: 1.8;
}

.post-card-read {
  display: inline-block;
  margin-top: var(--space-md);
  font-size: 13px;
  font-weight: 400;
  color: var(--text-3);
  letter-spacing: 0.04em;
}

/* ===== TAG HEADER ===== */
.tag-header {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md) var(--space-lg);
}

.tag-title {
  font-size: 28px;
  font-weight: 500;
  letter-spacing: -0.02em;
}

.tag-description {
  margin-top: var(--space-sm);
  font-size: 14px;
  font-weight: 300;
  color: var(--text-2);
  line-height: 1.8;
}

/* ===== ARTICLE ===== */
.post {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* Post Header */
.post-header {
  padding: var(--space-xl) 0 var(--space-lg);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--space-lg);
}

.post-tag {
  display: inline-block;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: var(--space-sm);
}

.post-title {
  font-size: 32px;
  font-weight: 500;
  line-height: 1.35;
  letter-spacing: -0.03em;
}

.post-meta {
  margin-top: var(--space-md);
  font-size: 13px;
  font-weight: 300;
  color: var(--text-3);
  letter-spacing: 0.02em;
}

.post-meta-sep {
  margin: 0 8px;
}

/* Post Content — the core reading experience */
.post-content {
  font-size: 16px;
  font-weight: 300;
  line-height: 2;
  color: var(--text);
  letter-spacing: 0.01em;
}

/* Paragraphs: generous vertical rhythm */
.post-content p {
  margin-bottom: 2em;
}

/* Headings: lots of breathing room */
.post-content h2 {
  font-size: 22px;
  font-weight: 500;
  letter-spacing: -0.02em;
  margin-top: 4em;
  margin-bottom: 1.5em;
  padding-top: 2em;
  border-top: 1px solid var(--border);
}

.post-content h3 {
  font-size: 18px;
  font-weight: 500;
  letter-spacing: -0.01em;
  margin-top: 3em;
  margin-bottom: 1em;
}

/* Strong: slightly heavier but not bold */
.post-content strong {
  font-weight: 500;
  color: var(--text);
}

/* Lists */
.post-content ul,
.post-content ol {
  margin-bottom: 2em;
  padding-left: 1.2em;
}

.post-content li {
  margin-bottom: 0.8em;
  line-height: 1.9;
}

/* Blockquotes */
.post-content blockquote {
  margin: 3em 0;
  padding: 0 0 0 var(--space-md);
  border-left: 2px solid var(--border);
  color: var(--text-2);
  font-style: normal;
}

.post-content blockquote p {
  margin-bottom: 1em;
}

/* Tables */
.post-content table {
  width: 100%;
  margin: 2em 0;
  border-collapse: collapse;
  font-size: 14px;
}

.post-content th,
.post-content td {
  padding: 12px 16px;
  text-align: left;
  border-bottom: 1px solid var(--border);
}

.post-content th {
  font-weight: 500;
  font-size: 12px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text-3);
}

/* Code */
.post-content code {
  font-size: 14px;
  background: var(--border);
  padding: 2px 6px;
  border-radius: 4px;
}

.post-content pre {
  margin: 2em 0;
  padding: var(--space-md);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow-x: auto;
  font-size: 14px;
  line-height: 1.6;
}

/* Horizontal rule: extra breathing room */
.post-content hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 4em 0;
}

/* Links in content */
.post-content a {
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--text-3);
  transition: text-decoration-color 0.2s;
}

.post-content a:hover {
  text-decoration-color: var(--text);
}

/* ===== POST FOOTER ===== */
.post-footer {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--border);
  margin-bottom: var(--space-xl);
}

.post-footer-tag {
  font-size: 14px;
  font-weight: 400;
  color: var(--text-2);
  letter-spacing: 0.02em;
  transition: color 0.2s;
}

.post-footer-tag:hover {
  color: var(--text);
}

/* ===== NEXT POST ===== */
.post-next {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md) var(--space-xl);
  border-top: 1px solid var(--border);
}

.post-next-label {
  display: block;
  font-size: 11px;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-3);
  margin-bottom: var(--space-xs);
}

.post-next-link {
  font-size: 20px;
  font-weight: 500;
  line-height: 1.4;
  letter-spacing: -0.02em;
  transition: opacity 0.2s;
}

.post-next-link:hover {
  opacity: 0.7;
}

/* ===== PAGINATION ===== */
.pagination {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--space-lg) var(--space-md) var(--space-xl);
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-md);
  font-size: 13px;
  color: var(--text-3);
}

.pagination-link {
  font-weight: 400;
  letter-spacing: 0.04em;
  color: var(--text-2);
  transition: color 0.2s;
}

.pagination-link:hover {
  color: var(--text);
}

.pagination-current {
  font-weight: 300;
}

/* ===== SITE FOOTER ===== */
.site-footer {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: var(--space-xl) var(--space-md) var(--space-lg);
  border-top: 1px solid var(--border);
  text-align: center;
}

.footer-nav {
  display: flex;
  justify-content: center;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.footer-nav a {
  font-size: 13px;
  font-weight: 400;
  color: var(--text-3);
  letter-spacing: 0.04em;
  transition: color 0.2s;
}

.footer-nav a:hover {
  color: var(--text);
}

.footer-copy {
  font-size: 12px;
  font-weight: 300;
  color: var(--text-3);
  letter-spacing: 0.04em;
}

.footer-tagline {
  margin-top: var(--space-xs);
  font-size: 12px;
  font-weight: 300;
  color: var(--text-3);
  letter-spacing: 0.04em;
  font-style: italic;
}

/* ===== RESPONSIVE ===== */

/* Mobile: tighter padding but keep whitespace rhythm */
@media (max-width: 640px) {
  :root {
    --space-lg: 48px;
    --space-xl: 72px;
    --space-2xl: 96px;
  }

  .site-header {
    padding: var(--space-md) var(--space-sm) var(--space-sm);
  }

  .home-hero {
    padding: var(--space-lg) var(--space-sm) var(--space-md);
  }

  .home-title {
    font-size: 28px;
  }

  .post-feed {
    padding: 0 var(--space-sm) var(--space-lg);
  }

  .post-card-link {
    padding: var(--space-md) 0;
  }

  .post-card-title {
    font-size: 19px;
  }

  .post {
    padding: 0 var(--space-sm);
  }

  .post-header {
    padding: var(--space-lg) 0 var(--space-md);
  }

  .post-title {
    font-size: 26px;
  }

  .post-content {
    font-size: 15px;
    line-height: 2.1;
  }

  .post-content h2 {
    font-size: 19px;
    margin-top: 3em;
    padding-top: 1.5em;
  }

  .post-content h3 {
    font-size: 17px;
    margin-top: 2.5em;
  }

  .post-content table {
    font-size: 13px;
  }

  .post-content th,
  .post-content td {
    padding: 10px 12px;
  }

  .post-next {
    padding: var(--space-md) var(--space-sm) var(--space-lg);
  }

  .post-next-link {
    font-size: 18px;
  }

  .tag-header {
    padding: var(--space-lg) var(--space-sm) var(--space-md);
  }

  .tag-title {
    font-size: 24px;
  }

  .site-footer {
    padding: var(--space-lg) var(--space-sm) var(--space-md);
  }
}

/* ===== GHOST: hide author byline ===== */
.post-meta .author,
.post-card .author,
.author-card,
.post-full-byline {
  display: none !important;
}

/* ===== GHOST KOENIG EDITOR WIDTH CLASSES ===== */
.kg-width-wide {
  max-width: var(--max-w);
  margin-left: auto;
  margin-right: auto;
}

.kg-width-full {
  max-width: 100%;
  margin-left: auto;
  margin-right: auto;
}

/* ===== GHOST SPECIFIC: hide feature images ===== */
.post-feature-image,
.kg-image,
.kg-gallery-image {
  display: none !important;
}

/* ===== GHOST SPECIFIC: newsletter/subscription forms ===== */
.gh-subscribe-form {
  max-width: var(--max-w);
  margin: var(--space-lg) auto;
}

/* ===== LEAD CTA（DEC-010 / AIO-05・Ghost Memberships連携） ===== */
.lead-cta {
  margin: var(--space-md) auto;
  max-width: var(--max-w);
  padding: 0 var(--space-sm);
}

.lead-cta-inner {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: var(--space-md) var(--space-md);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-md);
}

.lead-cta-text { flex: 1; min-width: 0; }

.lead-cta-headline {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: 0.01em;
  margin-bottom: 4px;
  line-height: 1.5;
}

.lead-cta-sub {
  font-size: 13px;
  color: var(--text-2);
  line-height: 1.6;
}

.lead-cta-button {
  display: inline-flex;
  align-items: center;
  background: var(--text);
  color: var(--surface) !important;
  font-weight: 600;
  font-size: 14px;
  padding: 12px 22px;
  border-radius: 999px;
  white-space: nowrap;
  flex-shrink: 0;
  transition: opacity 0.15s, transform 0.15s;
  letter-spacing: 0.02em;
}

.lead-cta-button:hover {
  opacity: 0.85;
  transform: translateY(-1px);
}

@media (max-width: 640px) {
  .lead-cta-inner {
    flex-direction: column;
    align-items: flex-start;
    padding: var(--space-sm) var(--space-md);
    gap: var(--space-sm);
  }
  .lead-cta-button { width: 100%; justify-content: center; padding: 14px 22px; }
}

/* ===== LEAD CTA mini（フッター固定版） ===== */
.lead-cta-mini {
  display: inline-block;
  font-size: 13px;
  color: var(--text-2);
  border-bottom: 1px dotted var(--text-3);
  padding-bottom: 2px;
  margin-bottom: 16px;
  transition: color 0.15s, border-color 0.15s;
}

.lead-cta-mini:hover {
  color: var(--text);
  border-bottom-color: var(--text);
}

.lead-cta-arrow {
  display: inline-block;
  margin-left: 4px;
  transition: transform 0.15s;
}

.lead-cta-mini:hover .lead-cta-arrow {
  transform: translateX(2px);
}

/* ===== AFFILIATE BUTTONS（DEC-010 / AIO-05・記事内アフィ導線） ===== */
.aff-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 28px 0;
  padding: 0;
  list-style: none;
}

.aff-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 22px;
  min-height: 56px;
  background: var(--surface);
  color: var(--text) !important;
  border: 1px solid var(--border);
  border-left: 3px solid var(--text);
  border-radius: 10px;
  font-weight: 600;
  font-size: 14px;
  letter-spacing: 0.02em;
  text-decoration: none !important;
  text-align: center;
  flex: 1 1 200px;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  white-space: nowrap;
}

.aff-btn::after {
  content: "→";
  margin-left: 4px;
  opacity: 0.45;
  transition: transform 0.15s ease, opacity 0.15s ease;
}

.aff-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.08);
}

.aff-btn:hover::after {
  transform: translateX(3px);
  opacity: 1;
}

/* 店舗カラー（左ボーダー） */
.aff-btn.amazon    { border-left-color: #FF9900; }
.aff-btn.rakuten   { border-left-color: #BF0000; }
.aff-btn.yahoo     { border-left-color: #FF0033; }
.aff-btn.kitamura  { border-left-color: #C8102E; }
.aff-btn.maprental { border-left-color: #00A87A; }
.aff-btn.goopass   { border-left-color: #1E3A8A; }
.aff-btn.keepa     { border-left-color: #FF6B35; }

/* レンタル系のラベル（任意・「買わない選択肢」を強調する場合） */
.aff-buttons-label {
  font-size: 13px;
  color: var(--text-2);
  font-weight: 500;
  margin-bottom: 8px;
  padding: 0 4px;
}

@media (max-width: 640px) {
  .aff-buttons { flex-direction: column; gap: 10px; }
  .aff-btn { width: 100%; flex: 1 1 auto; }
}

/* ===== VERDICT BOX（買う/待つ/買うな の判定強調） ===== */
.verdict {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  padding: 18px 22px;
  margin: 24px 0;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--surface);
}

.verdict-label {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  min-width: 64px;
  padding: 6px 12px;
  font-weight: 700;
  font-size: 13px;
  border-radius: 999px;
  letter-spacing: 0.05em;
}

.verdict-buy   .verdict-label { background: #2D6A4F; color: #fff; }
.verdict-wait  .verdict-label { background: #6B6B6B; color: #fff; }
.verdict-skip  .verdict-label { background: #9D2235; color: #fff; }

.verdict-body {
  flex: 1;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text);
}

.verdict-body p { margin: 0; }
.verdict-body p + p { margin-top: 8px; }

@media (max-width: 640px) {
  .verdict { flex-direction: column; gap: 10px; padding: 16px 18px; }
}