@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@300;400&display=swap');

/* ryupro ブログ 共通スタイル
 *
 * blog/index.html（一覧）と blog/posts/*.html（記事）が読み込む。
 * 以前は同じCSSが全ページにインラインで重複していて、
 * デザインを変えるたびに全記事の再生成が必要だった。
 *
 * 記事側から参照するパスは ../blog.css、一覧側は blog.css。
 * 相対パスにしてあるのは、ローカル（/）でも GitHub Pages（/）でも
 * 同じように解決させるため。
 */

/* ---------- 共通: リセット・トークン・ナビ・フッター ---------- */

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

:root {
  --color-bg: #f6f5ef;
  --color-bg-soft: #e9ece3;
  --color-bg-card: #e9ece3;
  --color-text: #526056;
  --color-text-strong: #293e34;
  --color-text-dim: #657066;
  --color-gold: #53613d;
  --color-gold-dim: rgba(83,97,61,0.4);
  --color-border: rgba(41,62,52,0.2);
  --font-ja: 'Noto Sans JP', sans-serif;
  --font-serif: 'Shippori Mincho', serif;
  --font-en: 'Outfit', sans-serif;
  --max-width: 1240px;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-ja);
  font-weight: 400;
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 2;
  letter-spacing: 0.04em;
  -webkit-font-smoothing: antialiased;
}

::selection { background: var(--color-gold); color: #fff; }

nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: rgba(246,245,239,0.97);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--color-border);
}

.nav-inner {
  max-width: 1360px;
  margin: 0 auto;
  padding: 0 2rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 88px;
}

.nav-logo {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-weight: 400;
  font-size: 2.5rem;
  line-height: .9;
  letter-spacing: -0.04em;
  color: var(--color-text-strong);
  text-decoration: none;
}

.nav-back {
  display: inline-flex;
  align-items: center;
  min-height: 44px;
  font-size: 0.8rem;
  font-weight: 400;
  letter-spacing: 0.12em;
  color: var(--color-text);
  text-decoration: none;
  transition: color 0.4s;
}

.nav-back:hover { color: var(--color-gold); }

footer {
  padding: 4rem 2rem 3.5rem;
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.footer-logo {
  font-family: 'Cormorant Garamond', Georgia, serif;
  font-weight: 400;
  font-size: 4.5rem;
  line-height: 1;
  letter-spacing: -0.04em;
  margin-bottom: 1rem;
  color: var(--color-gold);
}

.footer-copy {
  font-family: var(--font-en);
  font-weight: 300;
  font-size: 0.62rem;
  letter-spacing: 0.28em;
  text-transform: uppercase;
  color: var(--color-text-dim);
}

/* ---------- 一覧ページ ---------- */

.page-header {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 10rem 2rem 4.5rem;
}

.page-header::before {
  content: 'Journal';
  display: block;
  margin-bottom: 2rem;
  color: #d9dfd2;
  font: 300 clamp(76px, 10vw, 132px)/1.05 'Cormorant Garamond', Georgia, serif;
  letter-spacing: -.045em;
}

.section-label {
  display: flex;
  align-items: center;
  gap: 1.1rem;
  font-size: 0.78rem;
  font-weight: 400;
  letter-spacing: 0.3em;
  color: var(--color-text-dim);
  margin-bottom: 1.75rem;
}

.section-label::before {
  content: '';
  width: 40px;
  height: 1px;
  background: var(--color-gold-dim);
}

.section-label .en {
  font-family: var(--font-en);
  font-size: 0.62rem;
  letter-spacing: 0.35em;
  text-transform: uppercase;
  color: var(--color-text-dim);
}

.section-title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.8rem, 3.4vw, 2.8rem);
  letter-spacing: 0.12em;
  color: var(--color-gold);
}
.section-title span { display: inline-block; }

.blog-list {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 2rem 6rem;
}

.blog-card {
  display: grid;
  grid-template-columns: minmax(0, .8fr) minmax(0, 1fr);
  align-items: center;
  gap: clamp(32px, 6vw, 80px);
  padding: 3.5rem 0;
  border-bottom: 1px solid var(--color-border);
  text-decoration: none;
  color: inherit;
}

.blog-card:first-child { border-top: 1px solid var(--color-border); }

.blog-card-img {
  width: 100%;
  aspect-ratio: 16/10;
  background: var(--color-bg-card);
  overflow: hidden;
  border: 0;
}

.blog-card-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: saturate(0.85);
  transition: transform 1.2s var(--ease), filter 1.2s var(--ease);
}

.blog-card:hover .blog-card-img img { transform: scale(1.05); filter: saturate(1); }

.blog-card-date {
  font-family: var(--font-en);
  font-weight: 300;
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  color: var(--color-gold);
  margin-bottom: 0.75rem;
}

.blog-card-title {
  font-family: var(--font-serif);
  font-size: 1.15rem;
  font-weight: 500;
  letter-spacing: 0.08em;
  color: var(--color-text-strong);
  margin-bottom: 0.75rem;
  line-height: 1.9;
  transition: color 0.5s;
}

.blog-card:hover .blog-card-title { color: var(--color-gold); }

.blog-card-excerpt {
  font-size: 0.85rem;
  color: var(--color-text);
  line-height: 2.1;
}

@media (max-width: 768px) {
  .blog-card {
    grid-template-columns: 1fr;
    gap: 1.25rem;
    padding: 2rem 0;
  }
  .blog-card-img { max-width: 100%; }
  .page-header { padding: 8rem 1.5rem 2.5rem; }
  .blog-list { padding: 0 1.5rem 4.5rem; }
}

/* ---------- 記事ページ ---------- */

.article-wrapper {
  max-width: 840px;
  margin: 0 auto;
  padding: 10rem 2rem 6rem;
}

.article-date {
  font-family: var(--font-en);
  font-weight: 300;
  font-size: 0.72rem;
  letter-spacing: 0.3em;
  color: var(--color-gold);
  margin-bottom: 1.25rem;
}

.article-title {
  font-family: var(--font-serif);
  font-weight: 400;
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  line-height: 2;
  letter-spacing: 0.08em;
  color: var(--color-gold);
  margin-bottom: 3rem;
}

.article-hero-img {
  width: 100%;
  overflow: hidden;
  margin-bottom: 3rem;
  border: 1px solid var(--color-border);
}

.article-hero-img img {
  width: 100%;
  height: auto;
  display: block;
  view-transition-name: post-hero;
}

/* 一覧で押したサムネイルが、記事上部の画像へつながって切り替わる */
@view-transition {
  navigation: auto;
}

::view-transition-group(post-hero) {
  animation-duration: 520ms;
  animation-timing-function: cubic-bezier(.22, .61, .36, 1);
}

::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: 280ms;
}

@media (prefers-reduced-motion: reduce) {
  @view-transition {
    navigation: none;
  }
}

.article-body {
  font-size: 1.0625rem;
  font-weight: 400;
  line-height: 2;
  letter-spacing: 0.025em;
  color: var(--color-text);
  overflow-wrap: anywhere;
}

.article-body p { margin-bottom: 1.75rem; }

.article-body strong { color: var(--color-gold); font-weight: 500; }

.article-body h2 {
  font-family: var(--font-serif);
  color: var(--color-text-strong);
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  margin: 3.5rem 0 1.5rem;
  padding-left: 1.1rem;
  border-left: 1px solid var(--color-gold);
  line-height: 1.9;
}

.article-body blockquote {
  border-left: 1px solid var(--color-gold-dim);
  padding: 0.75rem 1.5rem;
  margin: 1.25rem 0;
  background: var(--color-bg-soft);
  color: var(--color-text-strong);
  font-style: normal;
  font-size: inherit;
}

.article-body a {
  color: var(--color-gold);
  text-decoration: none;
  border-bottom: 1px solid var(--color-gold-dim);
  transition: border-color 0.4s;
}

.article-body a:hover { border-color: var(--color-gold); }

.article-back {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  margin-top: 3.5rem;
  padding: 1rem 2.75rem;
  font-size: 0.82rem;
  font-weight: 400;
  letter-spacing: 0.22em;
  color: var(--color-gold);
  text-decoration: none;
  border: 1px solid var(--color-gold-dim);
  transition: background 0.5s var(--ease), color 0.5s var(--ease), border-color 0.5s var(--ease);
}

.article-back:hover {
  background: var(--color-gold);
  border-color: var(--color-gold);
  color: #fff;
}

a:focus-visible { outline: 3px solid var(--color-gold); outline-offset: 5px; }
.nav-logo::after, .footer-logo::after { content: '.'; color: #859365; }
.article-body img { max-width: 100%; height: auto; }
@media (max-width: 768px) {
  .nav-inner { height: 72px; padding-inline: 22px; }
  .blog-card-excerpt { font-size: 1rem; line-height: 2; }
  .page-header { padding-top: 8rem; }
  .article-wrapper { padding: 8rem 22px 4rem; }
  .article-title { line-height: 1.8; letter-spacing: .06em; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { transition-duration: .01ms !important; }
}

@media (max-width: 640px) {
  .page-header { padding: 104px 24px 28px; }
  .page-header::before { font-size: 64px; margin-bottom: 20px; }
  .section-label { margin-bottom: 20px; }
  .blog-list { padding-bottom: 48px; }
  .blog-card { gap: 16px; padding-block: 24px; }
  .article-wrapper { padding-block: 104px 48px; }
  .article-date { margin-bottom: 14px; }
  .article-title, .article-hero-img { margin-bottom: 28px; }
  .article-body p { margin-bottom: 22px; }
  .article-body h2 { margin-block: 36px 18px; }
  .article-back { margin-top: 32px; }
  footer { padding-block: 40px 28px; }
}